JP6514062B2 - Wireless communication system, wireless device, wireless communication method and wireless communication program - Google Patents

Description

  The present invention relates to a wireless communication system, a wireless communication method, and a wireless communication program, and in particular, comprises a (1 + 1) redundant configuration including first and second wireless transmission systems and first and second wireless reception systems. The present invention relates to a wireless communication system, a wireless communication method, and a wireless communication program for performing wireless communication by fixed point-to-point in which wireless devices face each other in a wireless space.

  At present, in the field of wireless communication systems, various wireless communication systems are actively studied, and various wireless communication systems are put to practical use one after another within a limited wireless frequency band. As a result, there is a possibility that the wireless transmission quality of the wireless communication system may be deteriorated due to the influence of interference waves from other wireless communication systems using adjacent channels, in any of the wireless communication systems. It has become to.

  In order to avoid the deterioration of the radio transmission quality due to the influence of the interference wave of the adjacent channel like this, for example, as described in Patent Document 1, it is equipped with a plurality of directional antennas and from the adjacent channel Techniques have been disclosed to control the directivity of the receive antenna so as to minimize the impact.

JP, 2010-263472, A (page 4-6)

  However, in the conventional wireless communication system as described in Patent Document 1, as long as the operation of the adjacent channel continues, there may be a case where the degradation state of the wireless transmission quality due to the interference of the adjacent channel is fixed as it is. The operation of the adjacent channel is stopped, and the transmission quality of the radio signal of the own radio channel may not be improved until the interference wave of the adjacent channel disappears. As a result, due to interference waves of adjacent channels generated after installation, the wireless transmission quality is constantly degraded, and a new radio frequency application or replacement with a new radio communication system may be required. .

  A point-to-point wireless communication system is known as an example of a conventional wireless communication system different from the technology of Patent Document 1. In this point-to-point wireless communication system, for example, a wireless transmission system is configured by a first wireless transmission system and a second wireless transmission system. In this way, by making the wireless transmission system redundantly provided with the first and the second (1 + 1) redundant configuration, one of the wireless transmission systems, for example, the first wireless transmission system is being used in operation (wireless transmission Medium) using the radio frequency band of a specific radio frequency, and when the other radio transmission system, for example, the second radio transmission system, fails in one radio transmission system (first radio transmission system) in operation. This is a hot standby configuration that allows the second wireless transmission system to be on standby as a spare system for ensuring the continuation of the wireless transmission quality, in preparation for switching the transmission system by stopping the operation due to maintenance or maintenance. On the other hand, it is a (1 + 1) redundant configuration in which the wireless transmission system is provided in duplicate with the first and second, and the same data is transmitted by the first wireless transmission system and the second wireless using two radio frequencies (radio channels) It is common to use an FDD (Frequency Division Duplex) twin-path configuration, which is a wireless frequency redundant configuration that simultaneously transmits wirelessly with the system, and makes the wireless transmission path between wireless transmission and reception redundant by the redundant configuration of the wireless frequency and wireless transmission system. This suppresses the influence of interference from adjacent channels.

(Object of the present invention)
The present invention is the FDD point-to-point 1 + 1 radio system, which is capable of reconfiguring the line of the hot standby configuration and the FDD twin path configuration radio transmission independently in uplink and downlink, thereby deteriorating the radio transmission quality due to adjacent channel interference It is an object of the present invention to provide a wireless communication system, a wireless device, and a wireless communication method capable of preventing the uplink and downlink independently.

  In order to solve the above-described problems, the wireless communication system, the wireless communication method, and the wireless communication program according to the present invention employ the following characteristic configurations.

A wireless communication system according to the present invention is a wireless communication system that performs point-to-point wireless communication between opposing first and second wireless devices,
Each of the first wireless device and the second wireless device is
A first wireless transmission system including a first transmitter capable of individually setting an operating frequency which is a center frequency of a wireless frequency band, and a first modulator capable of individually setting a modulation scheme and a wireless occupation band.
A second radio transmission system including a second transmitter capable of individually setting an operating frequency which is a center frequency of the radio frequency band, and a second modulator capable of individually setting a modulation scheme and a radio occupied band;
A first radio receiving system including a first receiver capable of individually setting an operating frequency which is a center frequency of a radio frequency band, and a first demodulator capable of individually setting a modulation scheme and a radio occupied band;
A second radio reception system including: a second receiver capable of individually setting an operating frequency which is a center frequency of a radio frequency band; and a second demodulator capable of individually setting a modulation scheme and a radio occupied band (1 + 1) redundant configuration,
Each of the first radio apparatus and the second radio apparatus uses a radio transmission system of one of the first and second radio transmission systems as a working radio frequency, and uses a predetermined radio frequency assigned in advance as an operating frequency. In a wireless communication system capable of a hot standby configuration in which a transmission operation to a wireless device on the other party side is performed, and the other wireless transmission system is used as a standby system to stop the wireless output and stand by,
Each of the first wireless device and the second wireless device is
Channel quality monitoring means for detecting whether the wireless transmission quality of the received signal of the own wireless channel has deteriorated;
Adjacent interference wave detection means for detecting whether the cause of the deterioration of the transmission quality of the received signal is due to an adjacent channel interference wave to a radio frequency band occupied as the radio frequency used by the own radio device;
The operating frequency of the first transmitter is divided into upper and lower radio frequency bands in the hot standby configuration, and the operating frequency of the second transmitter is in the hot standby configuration. The upper radio frequency when dividing the radio frequency band up and down, or the lower radio frequency when dividing the radio frequency band in the hot standby configuration up and down, into the upper radio frequency when dividing the radio frequency band up and down, And frequency control means for changing the frequency from the radio frequency in the hot standby configuration to an upper radio frequency when the operating frequency of the second receiver is divided into upper and lower bands of the radio frequency in the hot standby configuration;
The N (N: natural number) of the modulation scheme 2 ^N of each of the first modulator and the second modulator, or the first demodulator and the second demodulator, is at least doubled in the hot standby configuration Modulation scheme control means to be changed;
Occupied band control means for changing the occupied band of each of the first modulator and the second modulator or the first demodulator and the second demodulator to a half occupied band in the hot standby configuration;
Transmission data combining means for selecting a received signal with better quality from the received signals received by each of the first receiver and the second receiver and combining them as received data;
When it is determined that the wireless transmission quality of the received signal is degraded due to the adjacent channel interference wave, the frequency control unit, the modulation scheme control unit, and the occupation for the first and second wireless reception systems in which the degradation is detected The band control means is controlled to change the configuration from the hot standby configuration to an FDD twin path configuration in which the same data is received using two radio frequencies, the lower radio frequency and the upper radio frequency. The frequency control means, the modulation method control means, and the modulation method control means for the first and second radio transmission systems when receiving a deterioration notification of the radio transmission quality of the received signal due to the adjacent channel interference wave from the radio apparatus on the opposite side. Controlling the occupied band control means to control the lower radio frequency and the upper radio frequency from the hot standby configuration; The configuration changing means for equipment configuration changes to FDD Tsuinpasu configured for transmitting the same data using One radio frequency,
A wireless communication system characterized by:

A wireless communication method according to the present invention is a wireless communication method by a wireless communication system that performs point-to-point wireless communication between opposing first and second wireless devices,
Each of the first wireless device and the second wireless device includes a first wireless transmission system including a first transmitter and a first modulator, and a first wireless reception including a first receiver and a first demodulator. A (1 + 1) redundancy configuration comprising a system, a second radio transmission system comprising a second transmitter and a second modulator, and a second radio reception system comprising a second receiver and a second demodulator Applied to a wireless communication system, using any one of the first and second wireless transmission systems as a working radio frequency and using a specific radio frequency assigned in advance as an operating frequency In the wireless communication method capable of the hot standby configuration, the wireless transmission operation of the second embodiment is performed and the other wireless transmission system is used as a backup system to stop the wireless transmission operation and to stand by
The first wireless device is
A line quality monitoring step of detecting whether the radio transmission quality of the received signal of the own radio line has deteriorated;
An adjacent interference wave detection step of detecting whether the cause of the deterioration of the radio transmission quality of the received signal is due to an adjacent channel interference wave to a radio reception frequency band occupied as the radio frequency used by the own radio device;
In the lower standby frequency when the operating frequency of the first receiver is divided into upper and lower bands of the wireless frequency in the hot standby configuration, the operating frequency of the second receiver is in the hot standby configuration. A reception frequency control step of changing the frequency from the radio frequency in the hot standby configuration to the upper radio frequency when the frequency band is divided into upper and lower parts;
A receiving modulation scheme control step of changing N (N: natural number) of the modulation scheme 2 ^N of each of the first demodulator and the second demodulator to at least double in the hot standby configuration;
A reception occupied band control step of changing an occupied band of each of the first demodulator and the second demodulator to a half occupied band in the hot standby configuration;
A transmission data combining step of selecting a reception signal with better radio transmission quality from the reception signals received by the first receiver and the second receiver and combining them as reception data;
When it is determined that the wireless transmission quality of the received signal is deteriorated due to the adjacent channel interference wave, the first and second reception frequency control steps, the reception modulation scheme control step, and the reception exclusive band control step are used to determine There is a receiving configuration changing step of changing the configuration of the second receiving system from the hot standby configuration to an FDD twin-path configuration in which the same data is received using the two lower radio frequencies and the lower radio frequency. And
The second wireless device is
The operating frequency of the second transmitter is divided into upper and lower radio frequencies when the operating frequency of the first transmitter is divided into upper and lower bands of the radio frequency in the hot standby configuration. A transmission frequency control step of changing the frequency from the radio frequency in the hot standby configuration to an upper radio frequency when the frequency band is divided into upper and lower parts;
A transmission modulation scheme control step of changing N (N: natural number) of the modulation scheme 2 ^N of each of the first modulator and the second modulator by at least twice in the hot standby configuration;
A transmission occupied band control step of changing an occupied band of each of the first modulator and the second modulator to a half occupied band in the hot standby configuration;
The transmission frequency control step, the transmission modulation scheme control step, and the transmission occupancy band control step are used when the radio transmission quality deterioration notification of the reception signal is received from the first radio apparatus by the adjacent channel interference wave. Transmission configuration for changing the configuration of the first and second transmission systems from the hot standby configuration to an FDD twin-path configuration in which the same data is transmitted using the two lower radio frequencies and the lower radio frequency and the upper radio frequency Change step,
The wireless communication method according to the present invention is characterized in that

The wireless device of the present invention is a wireless device of a wireless communication system that performs point-to-point wireless communication between two opposing wireless devices,
A first wireless transmission system including a first transmitter capable of individually setting an operating frequency which is a center frequency of a wireless frequency band, and a first modulator capable of individually setting a modulation scheme and a wireless occupation band.
A second radio transmission system including a second transmitter capable of individually setting an operating frequency which is a center frequency of the radio frequency band, and a second modulator capable of individually setting a modulation scheme and a radio occupied band;
A first radio receiving system including a first receiver capable of individually setting an operating frequency which is a center frequency of a radio frequency band, and a first demodulator capable of individually setting a modulation scheme and a radio occupied band;
A second radio reception system including: a second receiver capable of individually setting an operating frequency which is a center frequency of a radio frequency band; and a second demodulator capable of individually setting a modulation scheme and a radio occupied band (1 + 1) redundant configuration,
Using one of the first and second wireless transmission systems as a working wireless transmission system and using a specific wireless frequency assigned in advance as an operating frequency In the wireless apparatus capable of the hot standby configuration, the standby mode is performed by setting the other wireless transmission system as a standby system and stopping the wireless output.
Channel quality monitoring means for detecting whether the wireless transmission quality of the received signal of the own wireless channel has deteriorated;
Adjacent interference wave detection means for detecting whether the cause of the deterioration of the transmission quality of the received signal is due to an adjacent channel interference wave to a radio frequency band occupied as the radio frequency used by the own radio device;
The operating frequency of the first transmitter is divided into upper and lower radio frequency bands in the hot standby configuration, and the operating frequency of the second transmitter is in the hot standby configuration. The upper radio frequency when dividing the radio frequency band up and down, or the lower radio frequency when dividing the radio frequency band in the hot standby configuration up and down, into the upper radio frequency when dividing the radio frequency band up and down, And frequency control means for changing the frequency from the radio frequency in the hot standby configuration to an upper radio frequency when the operating frequency of the second receiver is divided into upper and lower bands of the radio frequency in the hot standby configuration;
The N (N: natural number) of the modulation scheme 2 ^N of each of the first modulator and the second modulator, or the first demodulator and the second demodulator, is at least doubled in the hot standby configuration Modulation scheme control means to be changed;
Occupied band control means for changing the occupied band of each of the first modulator and the second modulator or the first demodulator and the second demodulator to a half occupied band in the hot standby configuration;
Transmission data combining means for selecting a received signal with better quality from the received signals received by each of the first receiver and the second receiver and combining them as received data;
When it is determined that the wireless transmission quality of the received signal is degraded due to the adjacent channel interference wave, the frequency control unit, the modulation scheme control unit, and the occupation for the first and second wireless reception systems in which the degradation is detected The band control means is controlled to change the configuration from the hot standby configuration to an FDD twin path configuration in which the same data is received using two radio frequencies, the lower radio frequency and the upper radio frequency. The frequency control means, the modulation method control means, and the modulation method control means for the first and second radio transmission systems when receiving a deterioration notification of the radio transmission quality of the received signal due to the adjacent channel interference wave from the radio apparatus on the opposite side. Controlling the occupied band control means to control the lower radio frequency and the upper radio frequency from the hot standby configuration; The configuration changing means for configuration changes to the FDD Tsuinpasu configured for transmitting the same data using One radio frequency,
A wireless device characterized by:

A wireless communication method according to the present invention is a wireless communication method by a wireless device of a wireless communication system that performs point-to-point wireless communication between two opposing wireless devices.
The wireless device includes a first wireless transmission system including a first transmitter and a first modulator, a first wireless reception system including a first receiver and a first demodulator, a second transmitter and a second A first radio transmission system including a second radio transmission system including a modulator, and a second radio reception system including a second receiver and a second demodulator; Performs a wireless transmission operation to a wireless device on the other party side using a specific wireless frequency assigned in advance as an operating frequency with any one of the wireless transmission systems in the transmission system being active, and the other wireless transmission system as a backup system In the wireless communication method of the wireless device capable of the hot standby configuration for stopping and waiting for the wireless transmission operation as
The operating frequency of the first transmitter is divided into upper and lower radio frequency bands in the hot standby configuration, and the operating frequency of the second transmitter is in the hot standby configuration. The upper radio frequency when dividing the radio frequency band up and down, or the lower radio frequency when dividing the radio frequency band in the hot standby configuration up and down, into the upper radio frequency when dividing the radio frequency band up and down, And a frequency control step of changing the frequency from the radio frequency in the hot standby configuration to the upper radio frequency when the operating frequency of the second receiver is divided into upper and lower bands of the radio frequency in the hot standby configuration.
The N (N: natural number) of the modulation scheme 2 ^N of each of the first modulator and the second modulator, or the first demodulator and the second demodulator, is at least doubled in the hot standby configuration Modulation scheme control step to be changed;
An occupied band control step of changing an occupied band of each of the first modulator and the second modulator or the first demodulator and the second demodulator to a half occupied band in the hot standby configuration;
It is detected whether or not the wireless transmission quality of the received signal of the own wireless channel is degraded, and the cause of the degraded transmission quality is due to the adjacent channel interference wave to the radio frequency band occupied as the radio frequency used by the own radio device. When it is determined that the first and second radio receiving systems detect the deterioration, the frequency control step, the modulation method control step, and the occupied band control step are used to determine the first and second radio receiving systems from the hot standby configuration. The configuration is changed to an FDD twin path configuration that receives the same data using two radio frequencies of the side radio frequency and the upper side radio frequency, or the reception signal by the adjacent channel interference wave from the opposite side radio apparatus facing the radio When the radio transmission quality deterioration notification is received, the frequency control step for the first and second radio transmission systems is performed. In the FDD twin-path configuration in which the same data is transmitted from the hot standby configuration using the two lower radio frequencies and the upper one from the hot standby configuration using the modulation scheme control step and the occupied band control step Configuration change step for changing configuration;
A wireless communication method comprising:

  According to the present invention, it is not necessary to perform new frequency application or replacement to a new wireless communication system even in a situation where the transmission quality is degraded due to the interference wave of the adjacent channel, The effect of being able to restore the radio transmission quality to a good state by eliminating the deterioration state of the transmission quality due to the interference wave of the adjacent channel while maintaining the original transmission capacity by only changing the setting of it can. Also, since the above operation is performed separately for uplink and downlink radio channels, when performing system change of a channel whose transmission quality is degraded due to interference waves of one adjacent channel, the other channel whose transmission quality is not degraded is disconnected. There is nothing to do.

It is an apparatus block diagram which shows an example of an apparatus configuration of the radio | wireless communications system by this invention. It is a block block diagram which shows an example of an internal structure of the adjacent interference wave detection part in the radio | wireless apparatus which comprises the radio | wireless communications system shown in FIG. It is a block block diagram which shows an example of an internal structure of the radio signal control part in the radio | wireless apparatus which comprises the radio | wireless communications system shown in FIG. It is a flowchart for demonstrating an example of operation | movement which judges that the interference from the adjacent channel has generate | occur | produced in the radio signal control part in the radio | wireless apparatus which comprises the radio | wireless communications system shown in FIG. 7 is a flowchart for illustrating an example of operation of changing the configuration of a line whose radio transmission quality has deteriorated from a hot standby configuration to an FDD twin path configuration in a wireless signal control unit in a wireless device configuring the wireless communication system shown in FIG. is there. An example of an operation at the time of judging that the interference of the adjacent channel in the FDD twin path configuration is lower than a predetermined interference threshold in the wireless signal control unit in the wireless device configuring the wireless communication system shown in FIG. Is a flow chart for this. FIG. 16 is a first half of a flowchart for describing an example of an operation of performing a configuration change for returning from the FDD twin path configuration to the hot standby configuration in the wireless signal control unit in the wireless device configuring the wireless communication system shown in FIG. FIG. 16 is a second half of the flowchart for describing an example of the operation of performing the configuration change for returning from the FDD twin path configuration to the hot standby configuration in the wireless signal control unit in the wireless device configuring the wireless communication system illustrated in FIG. It is explanatory drawing for demonstrating an example of operation | movement of the radio | wireless communications system shown to FIGS. 1-3.

  Hereinafter, preferred embodiments of a wireless communication system, a wireless device, a wireless communication method, and a wireless communication program according to the present invention will be described with reference to the attached drawings. In the following description, although the wireless communication system and the wireless communication method according to the present invention will be described, such a wireless communication method may be implemented as a wireless communication program that can be executed by a computer, or wireless communication It goes without saying that the program may be recorded on a computer readable recording medium. Further, reference numerals in the drawings attached to the following drawings are for convenience added to the respective elements as an example for aiding understanding, and it is needless to say that the present invention is not intended to be limited to the illustrated embodiment. Yes.

(Features of the present invention)
Before describing the embodiments of the present invention, the features of the present invention will first be outlined.
The present invention is a wireless communication system that performs point-to-point communication between two wireless devices facing in space, and the transmission system and the reception system of each of the two wireless devices can perform hot standby operation (1 + 1). In a wireless communication system having a redundant configuration,
In the hot standby configuration, a lower radio frequency band having a center frequency of f0 'is a lower radio frequency band (a radio frequency band A having a center frequency of f1') and an upper radio frequency band having a center frequency of f2 ' B) frequency control function for wireless transmission in two
Occupied band control function that sets the radio occupied band to half of the hot standby configuration,
By providing at least a function capable of individually controlling the transmission capacity and the modulation system 2 ^N , where N (N is a natural number) of the modulation system 2 ^N (N: natural number) at least in the hot standby configuration, in the transmission system and the reception system.
Even if radio transmission quality is degraded due to interference waves on adjacent channels, there is no need to change to a new radio frequency channel or replace with a new radio communication system, and transmission quality is degraded. Wireless transmission only by changing the setting in the wireless device, eliminating the influence of interference from the adjacent channel with the original transmission capacity as it is, without disconnecting the wireless channel whose transmission quality has not deteriorated It is possible to restore the quality to a good state.

More specifically, the wireless communication system according to the present invention has the following configuration. That is, the wireless communication system according to the present invention is
The wireless device comprises two wireless devices facing each other in point-to-point communication, and each wireless device comprises a first and a second wireless transmission system and a first and a second wireless reception system. (1 + 1) A redundant configuration, in which one of the first and second radio transmission systems is used as a working radio signal to the other party's radio apparatus using a specific radio frequency assigned in advance. A hot standby configuration is possible in which the wireless transmission operation is performed and the other wireless transmission system is on standby as a redundant system of device redundancy, and line quality monitoring means, adjacent interference wave detection means, frequency control means, occupied band control means And at least a modulation scheme control unit, a transmission data combining unit, and a configuration changing unit. The configuration recovery means may further be provided. The first wireless transmission system includes a first transmitter, a second transmitter, a first modulator, and a second modulator, and the first wireless reception system includes a first demodulator and a second modulator. A demodulator, a first receiver, and a second receiver are provided. The second wireless transmission system and the second wireless reception system are characterized in that they can operate according to frequency control, occupied band control, modulation scheme control independent of transmission and reception, respectively. .

  (1) The channel quality monitoring means is means for detecting whether the wireless transmission quality of the received signal of the own wireless channel has deteriorated. Whether or not the wireless transmission quality has deteriorated can be determined by the bit error rate, the CN ratio, or the like.

  (2) The adjacent interference wave detection means determines whether the cause of deterioration in transmission quality of the received signal is due to the adjacent channel interference wave to a radio frequency band occupied as a radio frequency used by the own radio apparatus It is a means to detect.

  (3) When the frequency control means determines that the transmission quality of the received signal of the first wireless device has deteriorated due to the adjacent channel interference wave in the hot standby configuration, the frequency control means may receive the signal from the first receiver of the own wireless device. Reception operation of the second receiver of the own radio apparatus at the lower radio frequency f1 '(or upper radio frequency f2') when the operating frequency is divided into upper and lower bands of the radio frequency f0 'in the hot standby configuration It is a means for changing the frequency from the radio frequency f0 'to the upper radio frequency f2' (or lower radio frequency f1 ') of the band of the radio frequency f0'. When the frequency control means determines that the transmission quality deterioration of the received signal a due to the adjacent channel interference wave can be eliminated, the reception of the first receiver and the second receiver of the own radio apparatus is performed. It is preferable to return the operating frequency for the radio to the radio frequency f0 'in the hot standby configuration.

  The frequency control means, in the second radio apparatus on the opposite side of the radio, receives the transmission quality deterioration notification of the reception signal a by the adjacent channel interference wave from the first radio apparatus on the opposite side, The lower frequency f1 '(or the upper frequency f2') of the first radio of the first radio is divided into upper and lower radio frequencies f0 'of the radio frequency f0 of the first radio. It is a means for changing the frequency from the radio frequency f0 ′ to the upper radio frequency f2 ′ (or lower radio frequency f1 ′) of the radio frequency f0 ′. When the frequency control means receives the notification of the quality deterioration cancellation of the received signal a, the transmission operating frequency of each of the first transmitter and the second transmitter of the own radio apparatus is set to the radio frequency in the hot standby configuration. It is preferable to return to f0 '. The same applies to replacing the first wireless device with the second wireless device and replacing the second wireless device with the first wireless device.

(4) The first demodulator of the own wireless device, when the modulation scheme control means determines that the transmission quality of the received signal a of the first wireless device has deteriorated due to the adjacent channel interference wave in the hot standby configuration. And N (N: natural number) of the modulation scheme 2 ^N of each of the second demodulator is a means for changing at least twice in the hot standby configuration. When the modulation scheme control means determines that the transmission quality deterioration of the received signal a due to the adjacent channel interference wave can be eliminated, each of the first demodulator and the second demodulator of the own radio apparatus Preferably, ^N of the modulation scheme 2 ^N is halved to return to the original modulation scheme in the hot standby configuration.

When the modulation scheme control means receives, from the opposing first wireless device, the notification of transmission quality deterioration of the received signal a due to the adjacent channel interference wave from the opposing first wireless device, the modulation scheme control means It is a means to change ^N of the modulation scheme 2 ^N of each of one modulator and the second modulator at least twice in the hot standby configuration. When the modulation scheme control means receives notification of transmission quality deterioration cancellation of the received signal a, ^N of the modulation schemes 2 ^N of the first modulator and the second modulator of the second radio apparatus is received. It is preferable to restore the original modulation scheme in the hot standby configuration by halving it. The same applies to replacing the first wireless device with the second wireless device and replacing the second wireless device with the first wireless device. ^N of the modulation scheme 2 ^N may be 2 times or more, and may be 3 times, 4 times, 5 times, etc.

(5) In the hot standby configuration, when the first wireless apparatus determines that the transmission quality of the received signal a is degraded due to the adjacent channel interference wave, the occupied band control means performs the first demodulation of the own wireless apparatus. And means for changing the occupied band of each of the second demodulator and the second demodulator to a half occupied band in the hot standby configuration. When the occupied band control means determines that the transmission quality deterioration of the reception signal a due to the adjacent channel interference wave can be eliminated, each of the first demodulator and the second demodulator of the own radio apparatus It is preferable to double the occupied bandwidth of to restore the original occupied bandwidth in the hot standby configuration.
Note that, in the second radio apparatus on the opposite side of the radio opposite side, the occupied band control means receives the transmission quality deterioration notification of the received signal a by the adjacent channel interference wave from the first radio apparatus opposite to the own radio apparatus. Means for changing the occupied bandwidth of each of the first modulator and the second modulator to a half occupied bandwidth in the hot standby configuration. When the occupied band control means receives the notification of the quality deterioration cancellation of the received signal a, the occupied band of the first modulator of the own radio apparatus and the second modulator is doubled to obtain a hot standby. It is preferable to return to the original occupied band at the time of configuration. The same applies to replacing the first wireless device with the second wireless device and replacing the second wireless device with the first wireless device.

  (6) Transmission quality deterioration due to adjacent channel interference waves occurs only in either the lower radio frequency f1 'or the upper radio frequency f2' divided, and does not affect the other transmission quality, so at least one of the transmission quality Since the transmission data combining means has received the received signal a received by each of the first receiver and the second receiver of the first wireless device (or the second wireless device), Means for selecting the better received signal a and combining it as transmission data j.

  (7) The configuration changing means determines that the frequency changing means, the modulation method control means, and the occupied band, when the first wireless device determines that the transmission quality of the received signal a is deteriorated due to the adjacent channel interference wave. The control means is controlled to reconfigure the receiving side from a hot standby configuration to an FDD twin path configuration in which the same data is received using the two lower radio frequencies f1 'and f2'. Means, or the frequency changing means, the modulation scheme control means, when the second wireless device receives a notification of deterioration of the transmission quality of the received signal a by the adjacent channel interference wave from the opposing first wireless device. The control unit controls the occupied band control unit to transmit two radio frequencies of the lower side radio frequency f1 'and the upper side radio frequency f2' from the hot standby configuration on the transmission side. This is a means for changing the configuration to an FDD twin-pass configuration that uses and transmits the same data. That is, the configuration changing means transmits from the first current transmitter for use using the radio frequency f0 (f0 ') allocated in advance in the own radio channel of the first radio apparatus (or second radio apparatus) in the normal operation state. The radio frequency f0 (f0 ') is received from the hot standby configuration in the normal operation state in which the first receiver receives and the standby second transmitter and the standby second receiver wait. The transmission system and the reception system are individually divided into a lower radio frequency f1 (f1 ') and an upper radio frequency f2 (f2'), and the first transmitter transmits the lower radio frequency f1 transmitting at f1 '), the second transmitter transmitting at the upper radio frequency f2 (f2') and the receiving system receiving at the first receiver the lower radio frequency f1 '(f1) Change to the FDD twin path configuration in which the second receiver receives at the upper radio frequency f2 '(f2) It is a means to

  (8) Although the configuration that is the feature of the present invention has been described above, a configuration recovery means may be further provided. The configuration restoration means determines that transmission quality deterioration of the reception signal a due to the adjacent channel interference wave can be eliminated, or transmission quality of the reception signal from the opposing wireless device by the adjacent channel interference wave It is means for controlling the frequency changing means, the modulation method control means, and the occupied band control means to return from the FDD twin path configuration to the original hot standby configuration when receiving the notification of degradation cancellation. That is, the configuration recovery means performs the reverse operation of the configuration change means, and the first wireless device receives the first radio device in the lower radio frequency band f1 ′ and the second reception Receives in the upper radio frequency band f2 ', and the first transmitter of the second radio apparatus facing the radio transmits in the lower radio frequency band f1', and the second transmitter transmits the upper radio frequency band From the FDD twin-path configuration transmitting in the radio frequency band f2 'to the hot standby configuration in which the first radio apparatus receives from the current first receiver (or the second receiver) using the radio frequency f0', The second radio device facing the radio is means for restoring the configuration to the hot standby configuration which transmits from the first transmitter (or the second transmitter) currently in use using the radio frequency f0 ′.

  Even if degradation of wireless transmission quality occurs under the influence of interference waves of adjacent channels, FDD twin-path configuration can be set in two wireless devices using a wireless channel in which the interference waves are generated. By changing the setting, it is possible to restore the wireless data communication in a state not affected by the adjacent interference wave with the original transmission capacity, and to return the wireless transmission quality to a good state. In addition, since the transmission system and the reception system can be individually set and changed, even if only one of the uplink and the downlink of the radio communication channel is deteriorated due to the influence of the interference wave of the adjacent channel, It is possible to return the wireless transmission quality to a good state by changing the setting of only the line whose wireless transmission quality has deteriorated without disconnecting the other line where the wireless transmission quality has not deteriorated and keeping the current state. .

(Example of Configuration of Embodiment)
Next, a configuration example of an embodiment of a wireless communication system according to the present invention will be described in detail with reference to FIG. FIG. 1 is an apparatus configuration diagram showing an example of an apparatus configuration of an embodiment of a wireless communication system according to the present invention.

The wireless communication system shown in FIG. 1 is configured to include the first wireless device 101 and the second wireless device 201 facing each other in space as the first wireless device 101 and the second wireless device 201 performing point-to-point wireless communication. There is. Here, the first wireless device 101 and the second wireless device 201 have the same device configuration, and individually include two wireless transmission systems and two wireless reception systems. Then, in the wireless communication system having these two first wireless devices 101 and second wireless device 201, in the normal operation state, a specific wireless frequency f0 (the second wireless device) assigned beforehand with one of the wireless transmission systems being active. Perform transmission operation to the other party's radio apparatus using one radio apparatus 101) or radio frequency f0 '(for the second radio apparatus 201), and wait the other radio transmission system as a spare system of device redundancy The hot standby configuration is adopted.
In FIG. 1, in the wireless devices 101 and 201 having the same configuration, the same functional blocks are assigned the same reference numerals. Also, since each of the first wireless device 101 and the second wireless device 201 has two transmitters, receivers, modulators, and demodulators of the same function, it is necessary to identify two devices of the same function. In addition, “−1” or “−2” is added to the end of the code of each functional block. By attaching “−1” or “−2” to the end of the reference code of each device having the same function, the “first functional block” and the “second function” have both the wireless devices 101 and 201 having the same function. It shows that it is a (1 + 1) redundant configuration which is duplexed with "block". For example, reference numerals 102-1 and 202-1 mean the first transmitter 102-1 in the first wireless device 101 and the first transmitter 202-1 in the second wireless device 201, respectively. The reference numeral 102-2 and the reference numeral 202-2 respectively mean the second transmitter 102-2 in the first wireless device 101 and the second transmitter 202-2 in the second wireless device 201.

  In FIG. 1, the first wireless device 101 includes a first transmitter 102-1, a second transmitter 102-2, a first receiver 103-1, a second receiver 103-2, and a first modulator 104-1. , Second modulator 104-2, first demodulator 105-1, second demodulator 105-2, adjacent interference wave detection unit 106, radio signal control unit 107, interface unit 108, antenna unit 109, radio signal synthesizer 110 and a transmission data synthesizer 111 are configured. Then, one transmission system (corresponding to the first radio transmission system) in the first radio apparatus 101 of the redundant configuration, in which the first transmitter 102-1 and the first modulator 104-1 are two systems, One receiver 103-1 and the first demodulator 105-1 constitute one receiving system (corresponding to the first wireless receiving system) in the first wireless apparatus 101 having a redundant configuration of two systems. In addition, the second transmitter 102-2 and the second modulator 104-2 constitute the other transmission system (corresponding to the second radio transmission system) in the first wireless device 101, and the second receiver 103-2 The second demodulator 105-2 constitutes the other reception system (corresponding to the second radio reception system) of the first radio apparatus 101. As described above, the first wireless device 101 divides the equipment to individually set the uplink and downlink operation configurations, and includes the wireless transmission system divided into two and the wireless reception system divided into two (1 + 1 ) Configure a redundant configuration.

  On the other hand, the second wireless device 201 also has a configuration similar to that of the first wireless device 101. That is, the second wireless device 201 includes a first transmitter 202-1, a second transmitter 202-2, a first receiver 203-1, a second receiver 203-2, a first modulator 204-1, and Dual modulator 204-2, first demodulator 205-1, second demodulator 205-2, adjacent interference wave detection unit 206, radio signal control unit 207, interface unit 208, antenna unit 209, radio signal synthesizer 210, and A transmission data synthesizer 211 is provided. Then, the first transmitter 202-1 and the first modulator 204-1 constitute one transmission system (corresponding to the first radio transmission system) in the second wireless apparatus 201 having a redundant configuration of two systems, The first receiver 203-1 and the first demodulator 205-1 constitute one reception system (corresponding to the first radio reception system) in the second radio apparatus 201 having a redundant configuration of two systems. Further, the second transmitter 202-2 and the second modulator 204-2 constitute the other transmission system (corresponding to the second radio transmission system) in the second wireless device 201, and the second receiver 203- The second and second demodulators 205-2 constitute the other reception system (corresponding to the second radio reception system) in the second radio apparatus 201. As described above, the second wireless device 201 is also provided with the wireless transmission system divided into two and the wireless reception system divided into two by dividing the equipment to individually set the uplink and downlink operation configuration (1 + 1 ) Configure a redundant configuration.

  In the first wireless device 101 and the second wireless device 201, the antenna unit 109 and the antenna unit 209 are disposed to face each other in the wireless space. Such a wireless space opposing arrangement of the antenna unit 109 and the antenna unit 209 enables point-to-point mutual wireless transmission between the first wireless device 101 and the second wireless device 201. Also, the wireless signal combiner 110 in the first wireless device 101 combines wireless signals from each of the first transmitter 102-1 and the second transmitter 102-2 and outputs the combined wireless signal to the antenna unit 109. Similarly, the wireless signal combiner 210 in the second wireless device 201 combines the wireless signals from the first transmitter 202-1 and the second transmitter 202-2 and outputs the combined wireless signal to the antenna unit 209. Then, in the hot standby configuration in the normal operation state, one of the transmitters (for example, the first transmitter 102-1 and the first transmitter 202-1) serves as a working transmission signal to the antenna unit 109 and the antenna unit 209. The other transmitter (for example, the second transmitter 102-2 and the second transmitter 202-2) stands by as a standby system for device redundancy, and does not output a transmission signal to the antenna unit 109 and the antenna unit 209. . In addition, the wireless reception signal wirelessly received by the antenna unit 109 in the first wireless device 101 and the antenna unit 209 in the second wireless device 201 is the wireless signal combiner 110 in the first wireless device 101, the second wireless, respectively. Both the first receiver 103-1 and the second receiver 103-2 through the wireless signal combiner 210 in the device 201, the first receiver 203-1 and the second receiver in the second wireless device 201 It is branched and output to both of 203-2. Then, in the hot standby configuration in the normal operation state, one of the receivers (for example, the first receiver 103-1 and the first receiver 203-1) serves as a working signal and the demodulator 105-1 receives the received signal as a radio signal. The control unit 107 outputs to the demodulator 205-1 and the radio signal control unit 207, and the other receiver (for example, the second receiver 103-2 and the second receiver 203-2) stands by as a spare system of device redundancy. Therefore, the received signal is not output to the demodulator 105-2 and the wireless signal control unit 107, and to the demodulator 205-2 and the wireless signal control unit 207.

  Furthermore, the wireless reception signal wirelessly received by the antenna unit 109 in the first wireless device 101 and the antenna unit 209 in the second wireless device 201 is the wireless signal combiner 110 in the first wireless device 101, the second wireless, respectively. The adjacent interference wave detection unit 106 in the first wireless device 101 and the adjacent interference wave detection unit 206 in the second wireless device 201 are also output via the wireless signal combiner 210 in the device 201. The adjacent interference wave detection unit 106 in the first wireless device 101 and the adjacent interference wave detection unit 206 in the second wireless device 201 respectively receive the adjacent channel wireless communication signal g included in the received wireless reception signal. The reception level r of the interference wave of both the lower adjacent interference wave and the upper adjacent interference wave is compared with a preset threshold value and detected as an interference wave reception level p generated by the determination of whether it is above the threshold or below The interference wave reception level of the lower adjacent channel and the interference wave reception level p of the upper adjacent channel are output to the wireless signal control unit 107 in the first wireless device 101 and the wireless signal control unit 207 in the second wireless device 201, respectively. Do. The adjacent interference wave detection unit 106 in the first wireless device 101 and the adjacent interference wave detection unit 206 in the second wireless device 201 respectively include the wireless signal control unit 107 in the first wireless device 101 and the second wireless device. The radio signal control unit 207 in the device 201 transmits the radio frequency information to be detected, the occupied band information, and the modulation scheme information as the adjacent channel information s, and indicates the adjacent channel band of the adjacent channel radio communication signal g. The radio signal control unit 107 in the first radio apparatus 101 and the radio signal control unit 207 in the second radio apparatus 201 that have received the interference wave reception level p set in advance the interference wave reception level p for interference detection of the adjacent channel. If the occupied band determined in section 307 exceeds the interference threshold determined by the modulation method, it is determined that there is an adjacent channel interference wave, and the transmission quality is degraded due to the adjacent channel interference wave, as described in detail later. judge.

  Further, according to FIG. 1, the first transmitter 102-1, the second transmitter 102-2, the first receiver 103-1 and the second receiver 103-2 in the first wireless device 101, and the second wireless device 201. The first transmitter 202-1, the second transmitter 202-2, the first receiver 203-1 and the second receiver 203-2 in the wireless signal control unit 107 in the first wireless device 101, respectively. The frequency setting signal k output from the wireless signal control unit 207 in the second wireless device 201 sets the frequency band to be operated, and the normal operating state is set between the first wireless device 101 and the second wireless device 201. In the above, if transmission / reception operation of a radio signal by the FDD method using a specific radio frequency f0 and radio frequency f0 'allocated in advance, or deterioration of transmission quality due to an adjacent channel interference wave is detected, In order to improve the transmission quality of only a line whose transmission quality has deteriorated, for example, the radio frequency f0 '(or f0), The same data is transmitted and received using two radio frequencies (f1 'and f2') obtained by dividing the band of the radio frequency f0 'of the transmitter of the other radio apparatus and the receiver of the radio apparatus facing the radio apparatus into two bands Transmit and receive radio signals according to the FDD twin-pass method. From the hot standby configuration, the lower radio frequency and the upper radio frequency of only the radio channel facing the radio in the radio transmission system configured by the radio reception system in which the transmission quality of the received signal has deteriorated and the radio reception transmitter Perform radio signal control to be configured to transmit the same data using the two radio frequencies of the above, and the direction in which the radio transmission quality is not deteriorated due to the influence of the adjacent channel interference wave, for example, radio When the adjacent interference wave detection unit 106 of the device 101 detects an adjacent channel interference wave, and the adjacent interference wave detection unit 206 of the wireless facing wireless device 201 can not detect the adjacent channel interference wave, the wireless communication from the wireless device 101 is performed. The wireless link in the direction toward the device 201 does not stop operation due to the reestablishment of the wireless transmission, and does not stop the data in the hot standby configuration as it is. To continue feeding. Moreover, it is the same also in the reverse direction.

  Here, the radio frequency f0 and the radio frequencies (f1 and f2) are the radio frequencies of the radio signal to be transmitted from the first radio apparatus 101 to the second radio apparatus 201, and the radio frequency f0 ′ and the radio frequencies (f1 ′ and f2) ') Is a radio frequency of a radio signal transmitted from the second radio apparatus 201 to the first radio apparatus 101. The radio frequency f1 and the radio frequency f2 are respectively a lower side radio frequency (frequency band A) and an upper side radio frequency (frequency band B) when the band of the radio frequency f0 is divided into upper and lower sides. Further, the radio frequency f1 'and the radio frequency f2' are the lower side radio frequency (frequency band A) and the upper side radio frequency (frequency band B) when the band of the radio frequency f0 'is divided into upper and lower, respectively. .

  In addition, the first receiver 103-1 and the second receiver 103-2 in the first wireless device 101, and the first receiver 203-1 and the second receiver 203-2 in the second wireless device 201 respectively Detecting the reception level within the reception frequency band of the received wireless reception signal via the wireless signal combiner 110 in the first wireless device 101 and the wireless signal combiner 210 in the second wireless device 201, The radio communication signal reception level h is output to the radio signal control unit 107 in the first radio apparatus 101 and the radio signal control unit 207 in the second radio apparatus 201, respectively.

  Also, the first modulator 104-1 and the second modulator 104-2 in the first wireless device 101, and the first modulator 204-1 and the second modulator 204-2 in the second wireless device 201 are respectively Interface signal e input through the transmission data combiner 111 in the first wireless device 101 and the transmission data combiner 211 in the second wireless device 201 to modulation data f, respectively; The first transmitter 102-1 and the second transmitter 102-2 in the first wireless device 101, and the first transmitter 202-1 and the second transmitter 202-2 in the second wireless device 201 are output.

  Also, the first demodulator 105-1 and the second demodulator 105-2 in the first wireless device 101, and the first demodulator 205-1 and the second demodulator 205-2 in the second wireless device 201 are respectively Wireless in each of the first receiver 103-1 and the second receiver 103-2 in the first wireless device 101, and the first receiver 203-1 and the second receiver 203-2 in the second wireless device 201. From the received signal a received, only the wireless channel (that is, the modulation data f of the opposite wireless device 201) transmitted by the opposite wireless device on the opposite side is demodulated to generate a demodulated signal b, and the first wireless signal is generated. The data is output to the transmission data combiner 111 in the device 101 and the transmission data combiner 211 in the second wireless device 201.

  Further, the transmission data combiner 111 in the first wireless device 101 and the transmission data combiner 211 in the second wireless device 201 respectively have a first demodulator 105-1 and a second demodulator in the first wireless device 101. 105-2 (one with lower error rate among the demodulated signals b simultaneously input from each of the first demodulator 205-1 and the second demodulator 205-2 in the second radio apparatus 201) (transmission quality Of the first radio device 101 are combined to solve the error to generate transmission data j, and the interface unit 108 in the first radio apparatus 101 and the interface unit in the second radio apparatus 201. Output to 208. That is, the transmission data combiner 111 in the first wireless device 101 and the transmission data combiner 211 in the second wireless device 201 are the first receiver 103-1 and the second receiver 103-2, the first receiver, respectively. Among received signals received by each of the 203-1 and the second receiver 203-2, select the received signal with the better received signal quality (the better of the transmission quality not affected by the adjacent channel interference wave) And transmission data combining means for combining and outputting the received transmission data j.

  Furthermore, the transmission data combiner 111 in the first wireless device 101 and the transmission data combiner 211 in the wireless device 201 respectively have a first modulator 104-1 and a second modulator 104-2 in the wireless device 101, For each of the first modulator 204-1 and the second modulator 204-2 in the second wireless device 201, the interface unit 108 in the first wireless device 101 and the interface unit 208 in the second wireless device 201 can be used. The interface signal e from each is branched and output.

  Further, the interface unit 108 in the first wireless device 101 and the interface unit 208 in the second wireless device 201 transmit the transmission data combiner 111 in the first wireless device 101, the second wireless device to the opposing wireless devices, respectively. Transmission data d to be transmitted through each of the transmission data synthesizers 211 in 201 is transmitted as the interface signal e, and also transmitted in the transmission data synthesizer 111 in the first wireless device 101 and in the second wireless device 201. Transmission data j wirelessly received from the opposing wireless device via each of the data synthesizers 211 is interfaced to be exchanged with the outside as reception data c.

  Further, the wireless signal control unit 107 in the first wireless device 101 and the wireless signal control unit 207 in the second wireless device 201 respectively perform the first demodulation in the first wireless device 101 in the hot standby configuration in the normal operation state. In any of the demodulator 105-1 and the second demodulator 105-2, and the first demodulator 205-1 and the second demodulator 205-2 in the second radio apparatus 201, a signal including an error as the demodulated signal b is When the demodulation is performed, the determination unit 304 determines whether the cause of the error is caused by the influence of the adjacent interference wave, and the current state when the adjacent channel interference wave is detected by the interference wave reception level p. It decides to change the hot standby configuration to the FDD twin path configuration, and performs each change control of frequency change, occupied band change, and modulation method change. Furthermore, the wireless signal control unit 107 in the first wireless device 101 and the wireless signal control unit 207 in the second wireless device 201 respectively have the first demodulator 105-1 in the first wireless device 101 in the FDD twin path configuration. In any of the first and second demodulators 105-2 and the first demodulator 205-1 and the second demodulator 205-2 in the second radio apparatus 201, continuously for the predetermined recovery monitoring time T1, When a signal with no error is demodulated as the demodulation signal b, it is determined to return the current FDD twin path configuration to the hot standby configuration, and the frequency change for changing the device configuration, the occupancy band change, and the modulation scheme change Perform each change control.

  In addition, since the change control of the device configuration like this is performed in synchronization with the wireless device on the opposite side of the wireless counterpart, the contents related to the frequency change, the occupied band change, and the modulation method change are adjusted beforehand Is configured to synchronize the change step. That is, the coordination with the opposite wireless device is performed by the following mechanism. In one of the wireless devices, for example, the first wireless device 101, the modulation scheme control signal q indicating the contents of the change control is transmitted to the first modulator 104-1 and the second modulator 104-2 in the first wireless device 101. , The radio signal to be transmitted, ie, the interface signal e, is multiplexed and transmitted from the first transmitter 102-1 and the second transmitter 102-2 to the opposite radio apparatus, for example, the second radio apparatus 201 side. On the other hand, in the opposite radio apparatus, for example, the second radio apparatus 201, a modulation scheme control signal q indicating the contents of the change control is selected from among the received signals a transmitted wirelessly from the other radio apparatus The corresponding received signal is separated as reception information m in each of the first demodulator 205-1 and the second demodulator 205-2 in the second wireless device 201, and the wireless signal control in the second wireless device 201 is performed. By outputting to the unit 207, an operation is performed to confirm the content of the change control of the wireless device on the opposite side, for example, the first wireless device 101.

  Next, an example of the internal configuration of the adjacent interference wave detection unit 106 in the first wireless device 101 and the adjacent interference wave detection unit 206 in the second wireless device 201 will be further described with reference to FIG. FIG. 2 is a block diagram showing an example of the internal configuration of the adjacent interference wave detection unit 106 in the first wireless device 101 constituting the wireless communication system shown in FIG. Although FIG. 2 shows the internal configuration of the adjacent interference wave detection unit 106 in the first wireless device 101, the same configuration is also applied to the adjacent interference wave detection unit 206 in the opposing second wireless device 201. It consists of composition.

As shown in FIG. 2, the adjacent interference wave detection unit 106 in the first wireless device 101 includes a lower adjacent channel receiver 401-1 and an upper adjacent channel receiver 401-2, and a lower reception level detector 402-. And at least an upper reception level detector 402-2. Further, the adjacent interference wave detection unit 206 also has the same configuration as the adjacent interference wave detection unit 106.
The adjacent interference wave detection unit 106 determines that the quality of the received signal demodulated by the demodulator is degraded from the adjacent channel radio communication signal g including the received signals in the lower adjacent channel band and the upper adjacent channel band. An adjacent interference wave detection means is provided which detects whether or not the adjacent channel interference wave to the radio frequency band occupied as the reception radio frequency f0 'used by the radio apparatus 101 is used. Here, as described above, the adjacent interference wave detection unit 106 transmits the radio frequency information and the occupied band information from the radio signal control unit 107 according to the adjacent channel information s, and the adjacent channel radio communication signal g to be detected is The lower adjacent channel band and the upper adjacent channel band are indicated.

  The lower adjacent channel receiver 401-1 uses the adjacent channel wireless communication signal g output from the wireless signal combiner 110 to receive the wireless frequency f 0 ′ (or wireless frequency f 0) for reception of the wireless device 101 (or the wireless device 201). Lower adjacent channel reception signal r is extracted. On the other hand, the upper adjacent channel receiver 401-2 receives from the adjacent channel radio communication signal g the adjacent channel received signal r above the radio frequency f 0 ′ (or radio frequency f 0) for reception by the wireless device 101 (or the wireless device 201). Extract In addition, the lower reception level detector 402-1 and the upper reception level detector 402-2 respectively receive the reception level of the lower adjacent channel reception signal r extracted by the lower adjacent channel receiver 401-1, the upper adjacent The reception level of the upper adjacent channel reception signal r extracted by the channel receiver 401-2 is detected. The reception level of the lower adjacent channel reception signal r and the reception level of the upper adjacent channel reception signal r detected are output to the radio signal control unit 107 as an interference wave reception level p, and the quality of the reception signal a is obtained. The presence or absence of the influence of the adjacent interference wave on the signal is determined by comparison with the interference threshold value instructed from the wireless signal control unit 107. The interference threshold has a different value according to the modulation scheme during wireless transmission. This is because the tolerance (degree) to which the reception signal a is affected by the transmission quality deterioration due to the adjacent channel interference wave differs for each modulation scheme.

  Next, an example of the internal configuration of the wireless signal control unit 107 in the first wireless device 101 and the wireless signal control unit 207 in the second wireless device 201 will be further described with reference to FIG. FIG. 3 is a block diagram showing an example of an internal configuration of the radio signal control unit 107 in the first radio apparatus 101 constituting the radio communication system shown in FIG. Although FIG. 3 shows the internal configuration of the wireless signal control unit 107 in the first wireless device 101, the same internal configuration is also true for the wireless signal control unit 207 in the second wireless device 201 facing wirelessly. It consists of

  As indicated by a dashed line frame in FIG. 3, the radio signal control unit 107 in the first radio apparatus 101 includes a channel quality monitoring unit 301, an opposite station synchronization determination unit 303, a determination unit 304, a setting unit 307, and signal control. Unit 308, transmission frequency control unit 309-T, reception frequency control unit 309-R, transmission occupied band control unit 310-T, reception occupied band control unit 310-R, transmission modulation scheme control unit 311-T, and reception modulation scheme control It comprises at least part 311-R. Note that, in FIG. 3, as a peripheral functional block that exchanges information with the wireless signal control unit 107, the first transmitter 102-1, the second transmitter 102-2, the first receiver 103-1, and the like. And second receiver 103-2, first modulator 104-1 and second modulator 104-2, first demodulator 105-1 and second demodulator 105-2, and adjacent interference wave detection unit 106. It is described together.

  The channel quality monitoring unit 301 includes the first demodulator 105-1 and the second demodulator 105 included in the received information m output from each of the first demodulator 105-1 and the second demodulator 105-2. -2 is a part that monitors line quality signal A, which is error rate information indicating the data error rate of the line signal in each of -2, and the line quality (radio transmission quality of received signal) is degraded based on the monitoring result Then, the presence or absence of the deterioration state of the line quality is transmitted to the determination unit 304 as the line deterioration signal B. That is, the line quality monitoring unit 301 is a line quality monitoring unit that detects whether or not the quality of the demodulated signal b demodulated by the first demodulator 105-1 and the second demodulator 105-2 of its own radio line has deteriorated. provide.

  Further, the inter-station synchronization determination unit 303 separates the information of the opposite station change request signal F included in the received information m output from each of the first demodulator 105-1 and the second demodulator 105-2. To check the frequency change, the occupied band change, the request for modulation scheme change information and the response from the opposite wireless device (the second wireless device 201 in the case of FIG. 3) on the opposite side. It is transmitted to the determination unit 304 as a response signal G from the wireless device. That is, when changing the configuration from the hot standby configuration to the FDD twin path configuration, or when returning from the FDD twin path configuration to the original hot standby configuration, the two opposing wireless apparatuses 101 determine the inter-station synchronization determination unit 303. The operation and configuration at the time of the configuration change between the first wireless device 101 and the second wireless device 201 by exchanging the opposite station change request information F between the second wireless device 201 and between the second wireless device 201. There is provided inter-station synchronization determination means for synchronizing the configuration change sequence of the operation upon return.

  In addition, setting section 307 holds interference threshold information for determining presence / absence of adjacent channel interference, frequency channel information for performing change control of radio frequency, adjacent channel information, associated modulation scheme information, and occupied band information. By notifying the determination unit 304 as setting information K, the radio frequency, modulation method, and occupied band at the time of changing the configuration between the hot standby configuration in the normal operation state and the FDD twin path configuration at the time of channel quality deterioration. The settings are implemented, and the implemented settings are backed up by the non-volatile memory.

  Further, the determination unit 304 uses the setting information K from the setting unit 307 to change the frequency at the time of changing the configuration of the hot standby configuration and the FDD twin path configuration set in the setting unit 307, change the occupied bandwidth, and change the modulation scheme change information. Acquire and confirm the device setting state at normal time and the device setting state at line quality deterioration. Then, when it is detected that the error rate has been deteriorated by the line deterioration information B transmitted from the line quality monitoring unit 301, whether or not the quality is due to the adjacent channel interference wave is detected from the adjacent interference wave detection unit 106 It determines based on the state of the interference wave reception level p to be output. That is, as a result of confirmation of the interference wave reception level p output from the adjacent interference wave detection unit 106, the interference wave reception level p of the lower or upper adjacent channel is equal to or higher than the interference threshold predetermined for interference detection, When it exists as an adjacent channel interference wave, it is determined that the deterioration of the channel quality due to the adjacent channel interference wave has occurred.

  When deterioration in channel quality occurs due to an adjacent channel interference wave, modulation scheme control is performed on request information for requesting transmission frequency change, occupied band change, modulation scheme change to the second radio apparatus 201 on the opposite side of the radio The signal q is included and output to the first modulator 104-1 and the second modulator 104-2. As a result, in the first modulator 104-1 and the second modulator 104-2, the modulation scheme control signal q and the interface signal e are multiplexed to obtain the first transmitter 102-1 and the second transmitter 102-2. And transmits to the second radio apparatus 201 on the opposite side of the radio.

  Further, in the second wireless device 201, as a result of receiving the request information for requesting the change of the frequency, the change of the occupied band, and the change of the modulation method transmitted in the modulation method control signal q, An ACK (Acknowledge) signal (in the present embodiment, it is included in the opposite station change request signal F and transmitted from the wireless opposite side as a response to the request to change the setting of the device according to the result of the device 101 receiving the request information. As a confirmation signal), it is included in the modulation scheme control signal q and transmitted to the first wireless device 101. As a result, the first wireless device 101 confirms the return of the ACK signal as the response signal G contained and returned in the received information m. In this manner, the inter-station synchronization determination unit 303 extracts the ACK signal included in the received information m returned from the opposing second wireless device 201 and generates the response signal G as the response signal G. On the basis of the above, when confirmation of the handling status of the second wireless device 201 on the opposite side is obtained, the determination unit 304 performs configuration change from the reception-only hot standby configuration to the FDD twin path configuration. That is, the determination unit 304 generates the wireless control signal M including the frequency signal N, the occupied band signal Q, and the modulation scheme signal R in order to change the configuration in synchronization with the second wireless device 201 on the opposite side. It is transmitted to the signal control unit 308. Furthermore, information on the adjacent wave at the time of configuration change is output as the adjacent channel information s to the adjacent interference wave detection unit 106, and the reception level of the lower adjacent channel band and the upper adjacent channel band in the FDD twin path configuration is detected. Make settings for

  Further, the signal control unit 308 shown in FIG. 3 receives the radio control signal M from the determination unit 304, extracts the frequency signal N, the occupied band signal Q, and the modulation scheme signal R, and transmits each of the transmission frequency control unit 309-. T, to appropriately change the reception frequency control unit 309-R, the transmission exclusive band control unit 310-T, the reception exclusive band control unit 310-R, the transmission modulation scheme control unit 311-T, and the reception modulation scheme control unit 311-R Output information That is, for example, when the signal control unit 308 of the wireless device 101 determines that the transmission quality of the received signal of the first demodulator 105-1 or the second demodulator 105-2 is deteriorated due to the adjacent channel interference wave, In order to confirm the ACK signal from the device 201 and change the calibration of the first and second radio reception systems, a reception frequency control unit 309-R, a reception exclusive bandwidth control unit 310-R, and a reception modulation scheme control unit 311 Change the configuration of -R. Alternatively, it receives a response signal G (that is, the request information related to the device configuration change from the wireless device 201) including a request to change the device configuration due to deterioration of the transmission quality of the received signal due to the adjacent channel interference wave from the opposing wireless device 201. When this occurs, the ACK signal is returned to the wireless device 201, and the first wireless transmission system is f1 under the control of the transmission frequency control unit 309-T, the transmission exclusive band control unit 310-T, and the transmission modulation scheme control unit 311-T. Change control of the second wireless transmission system to a configuration that uses the upper wireless band of f2 'as the' lower wireless band, and start wireless transmission output included in the frequency setting signal T from the hot standby configuration in the operation state A configuration changing means is provided for changing the configuration to an FDD twin path configuration in which both the first transmitter 102-1 and the second transmitter 102-2 perform wireless transmission by a signal (TX ON signal). In addition, when the signal control unit 308 determines that the wireless transmission quality deterioration of the received signal due to the adjacent channel interference wave can be eliminated steadily, or the wireless transmission of the received signal due to the adjacent channel interference wave from the opposing wireless device It also provides configuration recovery means for returning from the FDD twin-path configuration to the original hot standby configuration when receiving a notification of quality degradation elimination (that is, the request information regarding configuration recovery). Also, the operation in the opposite radio link in the opposite direction is the same as above, and the uplink and downlink radio channels operate independently.

  The reception frequency control unit 309-R receives the frequency signal N from the signal control unit 308 and generates the frequency setting signal T when the first wireless device 101 detects the transmission quality deterioration of the reception signal a due to the adjacent channel interference wave. Then, the signal is output to each of the first receiver 103-1 and the second receiver 103-2. That is, when the reception frequency control unit 309-R determines that the quality of the received signal is deteriorated due to the adjacent channel interference wave, the operating frequency of one first receiver 103-1 is in the hot standby configuration in the normal operation state. The lower radio frequency f1 '(or upper radio frequency f2') when dividing the band of the radio frequency f0 'up and down, the operating frequency of the other second receiver 103-2 to the band of the radio frequency f0' It is judged that the radio frequency f0 'was changed to the upper radio frequency f2' (or lower radio frequency f1 ') when divided into two, and that the transmission quality deterioration of the received signal due to the adjacent channel interference wave could be eliminated. The frequency control means is provided to return the operating frequency of each of the first receiver 103-1 and the second receiver 103-2 to the original radio frequency f0 'in the hot standby configuration.

  When the transmission frequency control unit 309-T receives a notification of deterioration of the transmission quality of the received signal a due to the adjacent channel interference wave from the first wireless device 101, which the second wireless device 201 is opposite to the wireless device, one first transmitter The lower second radio frequency f1 '(or the upper second radio frequency f2') when dividing the band of the radio frequency f0 'at the time of the hot standby configuration in the normal operation state into the upper side radio frequency f2' The operating frequency of the transmitter 202-2 is changed from the radio frequency f0 ′ to the upper radio frequency f2 ′ (or lower radio frequency f1 ′) of the band of the radio frequency f0 ′, and the second radio unit 201 When the notification of transmission quality deterioration cancellation of the received signal a due to the adjacent channel interference wave is received from the first wireless device 101 facing wirelessly, the operating frequency of each of the first transmitter 202-1 and the second transmitter 202-2 The original no at the time of hot standby configuration Providing a frequency control means for returning the frequency f0 '.

  When the first wireless device 101 detects the transmission quality deterioration of the received signal a due to the adjacent channel interference wave, the reception exclusive band control unit 310-R receives the exclusive band signal Q from the signal control unit 308, and generates an exclusive band setting signal. U is generated and output to each of the first demodulator 105-1 and the second demodulator 105-2. That is, when it is determined that the transmission quality of the reception signal a is deteriorated due to the adjacent channel interference wave, the reception exclusive band control unit 310-R occupies each of the first demodulator 105-1 and the second demodulator 105-2 When it is determined that the band is changed to a half occupied band in the hot standby configuration in the normal operation state, and it is determined that the transmission quality deterioration of the received signal a due to the adjacent channel interference wave can be eliminated, the first demodulator 105- The occupied band of each of the first and second demodulators 105-2 is doubled to provide an occupied band control means for returning to the original occupied band in the hot standby configuration.

  When the transmission exclusive band control unit 310 -T receives the transmission quality deterioration notification of the reception signal a due to the adjacent channel interference wave from the first radio apparatus 101 that the second radio apparatus 201 is facing radio, the first modulator 204. Changing the occupied bandwidth of each of the second modulator 204-1 and the second modulator 204-2 to a half occupied bandwidth in the hot standby configuration in the normal operation state, and the first wireless device facing the second wireless device 201 as a wireless counterpart When receiving the notification of transmission quality deterioration cancellation of the reception signal a due to the adjacent channel interference wave from 101, the occupied bandwidth of each of the first modulator 204-1 and the second modulator 204-2 is doubled, Provided is an occupied band control means for returning to the original occupied band in the hot standby configuration.

When the first radio apparatus 101 detects the deterioration of the transmission quality of the received signal a due to the adjacent channel interference wave, the reception modulation scheme control unit 311 -R receives the modulation scheme signal R from the signal control unit 308, and the modulation scheme setting signal W is generated and output to each of the first demodulator 105-1 and the second demodulator 105-2. That is, when it is determined that the transmission quality of the reception signal a is deteriorated due to the adjacent channel interference wave, the reception modulation scheme control unit 311-R modulates each of the first demodulator 105-1 and the second demodulator 105-2 When it is determined that the transmission quality deterioration of the reception signal a due to the adjacent channel interference wave can be eliminated by changing N (N: natural number) of method 2 ^N to twice in the hot standby configuration in the normal operation state. Provided is a modulation scheme control means for setting ^N of the modulation scheme 2 ^N of each of the first demodulator 105-1 and the second demodulator 105-2 to (1/2) to return to the original modulation scheme in the hot standby configuration. Do.

When the transmission modulation scheme control unit 311 -T receives a notification of transmission quality deterioration of the received signal a due to an adjacent channel interference wave from the first wireless device 101 that the second wireless device 201 is facing radio, the first modulator 204. The N (N: natural number) of the modulation scheme 2 ^N of each of the second modulator 204 and the second modulator 204-2 is changed to twice in the hot standby configuration in the normal operation state, and the second wireless device 201 performs wireless communication When receiving notification of transmission quality deterioration cancellation of the received signal a due to the adjacent channel interference wave from the opposing first wireless device 101, the modulation scheme of each of the first modulator 204-1 and the second modulator 204-2 Provided is a modulation scheme control means for setting ^N of 2 ^N to (1/2) to return to the original modulation scheme in the hot standby configuration.

The first receiver 103-1 and the second receiver 103-2 set the radio frequency (radio channel) at the time of radio communication by the frequency setting signal T from the reception frequency control unit 309-R, and at the same time, the reception band The received level is detected and output to the determination unit 304 of the wireless signal control unit 107 as the respective wireless communication signal received level h.
The first modulator 104-1 and the second modulator 104-2 use the transmission frequency control unit 309-T, and the first demodulator 105-1 and the second demodulator 105-2 use the reception frequency control unit 309-R. The band setting signal U and the modulation scheme setting signal W set an occupied bandwidth and a modulation scheme when performing wireless communication.

(Description of the operation example of the embodiment)
Next, an operation example of the wireless communication system shown in FIGS. 1 to 3 will be described in detail as one embodiment of the present invention.

  In the following description, the first transmitter 102-1, the second transmitter 102-2, the first receiver 103-1, the second receiver 103-2, and the second wireless device in the first wireless device 101. The first transmitter 202-1, the second transmitter 202-2, the first receiver 203-1, and the second receiver 203-2 in 201 have the first radio in the normal operation normal hot standby configuration. The wireless communication data transmission operation and the reception operation between the device 101 and the second wireless device 201, respectively, the wireless frequency f0 (first wireless device 101 → second wireless device 201), the wireless frequency f0 '(second wireless device 201) The first wireless device 101) is used.

  On the other hand, in the case of the FDD twin path configuration in the quality degraded state, two radio frequencies f1 and f2 (the first radio apparatus 101 and the second radio apparatus 201) transmit and receive radio communication data, respectively. This is performed using the device 101 → second wireless device 201), two wireless frequencies f1 ′ and f2 ′ (second wireless device 201 → first wireless device 101).

  Here, the radio frequency f0 and the radio frequency f0 ′ correspond to the frequencies of Go (uplink) and Return (downlink) of a general FDD system. Further, the same relationship applies to the radio frequency f1 and the radio frequency f1 ′, and the radio frequency f2 and the radio frequency f2 ′, respectively, and each of Go (uplink) and Return (downlink) of the general FDD system. It corresponds to the frequency.

  Also, the first modulator 104-1 and the second modulator 104-2 in the first wireless device 101, and the first modulator 204-1 and the second modulator 204-2 in the second wireless device 201 are respectively , The interface signal e output via the interface unit 108, the transmission data synthesizer 111, the interface unit 208, and the transmission data synthesizer 211, the modulation scheme setting signal from each of the radio signal control unit 107 and the radio signal control unit 207. Modulate using the modulation scheme set by W to generate modulated data f.

  Also, the first demodulator 105-1 and the second demodulator 105-2 in the first wireless device 101, and the first demodulator 205-1 and the second demodulator 205-2 in the second wireless device 201 are respectively The first transmitter 202-1 in the opposing second wireless device 201 among the received signals a separated from the wireless channel from the opposing second wireless device 201 and the first wireless device 101. A signal corresponding to the modulation data f transmitted by each of the second transmitter 202-2 and the first transmitter 102-1 and the Demodulation is performed using the modulation scheme set by the modulation scheme setting signal W from each of the radio signal control units 207 to generate a demodulated signal b.

  Also, the adjacent interference wave detection unit 106 in the first wireless device 101 and the adjacent interference wave detection unit 206 in the second wireless device 201 are adjacent channel wireless communication signals from the wireless signal combiner 110 and the wireless signal combiner 210, respectively. From g, the reception levels of both the lower channel and the upper channel designated in the adjacent channel information s from the determination unit 304 of each of the wireless signal control unit 107 and the wireless signal control unit 207 are lower adjacent Channel receiver 401-1 and upper adjacent channel receiver 401-2 are detected as interference wave reception level p of the adjacent channel by comparing with the interference threshold value preset based on the occupied band information and the modulation scheme information. The signal is output to the determination unit 304 of each of the wireless signal control unit 107 and the wireless signal control unit 207.

[Operation to determine that adjacent channel interference has occurred]
Next, an example of an operation of determining in the radio signal control unit 107 in the first radio apparatus 101 that interference from an adjacent channel is generated will be described in detail with reference to the flowchart in FIG. FIG. 4 illustrates an example of an operation of determining that interference from an adjacent channel has occurred in the radio signal control unit 107 in the first radio apparatus 101 configuring the radio communication system shown in FIG. It is a flowchart. Although the case of the wireless signal control unit 107 in the first wireless device 101 will be described in the description of the flowchart in FIG. 4, the wireless signal control unit 207 in the second wireless device 201 facing wireless is also It goes without saying that the same operation is performed only by replacing the wireless device 101 and the second wireless device 201.

  As shown in the flowchart of FIG. 4, first, at the time of the hot standby configuration in the normal operation state, the wireless signal control unit 107 in the first wireless device 101 performs the first demodulator 105-1 and the first demodulator 105-1 in the first wireless device 101. A line quality signal which is error rate information of the line signal in each of the first demodulator 105-1 and the second demodulator 105-2 included in the received information m outputted from each of the two demodulators 105-2 A is monitored by the channel quality monitoring unit 301, and when it is recognized that the channel quality is degraded based on the monitoring result of the channel quality signal A, it is transmitted to the determination unit 304 as the channel degradation signal B. (Step S1).

  Next, the determination unit 304 that has received the line degradation signal B from the line quality monitoring unit 301 is output from each of the first receiver 103-1 and the second receiver 103-2 in the first wireless device 101. Whether or not the incoming wireless communication signal reception level h is at a low reception level that causes an error in the received wireless signal is confirmed by comparing it with a predetermined reception threshold determined from the occupied band information and the modulation scheme information ( Step S2). When the wireless communication signal reception level h is lower than the predetermined reception threshold under the influence of rainfall, fading, etc. (No in step S2), the deterioration of the line quality indicated by the line deterioration signal B It is determined that the cause is not deterioration due to adjacent channel interference (step S3). Step S2 corresponds to the line quality monitoring step.

  On the other hand, when the wireless communication signal reception level h has reached the reception threshold or higher and is not a low reception level (Yes in step S2), next, the lower side coming from the adjacent interference wave detection unit 106 It is checked whether the interference wave reception level p of any one of the adjacent channel and the upper adjacent channel is equal to or higher than a predetermined interference threshold (step S4). When the interference wave reception level p of any of the lower adjacent channel and the upper adjacent channel is lower than the interference threshold (No in step S4), the cause of the deterioration of the channel quality indicated by the channel deterioration signal B is the adjacent channel interference. It is determined that the deterioration is not caused by (step S3). On the other hand, if the interference wave reception level p of either the lower adjacent channel or the upper adjacent channel is equal to or higher than the interference threshold (Yes in step S4), quality deterioration due to adjacent channel interference is assumed to occur. It determines (step S5). The determination sequence in the flow of FIG. 4 is continuously determined during operation of the wireless device in the hot standby configuration. Step S4 corresponds to the adjacent interference wave detection step.

  Then, in order to eliminate the influence from the lower adjacent channel or the upper adjacent channel, an operation for changing the configuration from the hot standby configuration to the FDD twin path configuration is activated (step S6).

[Operation for changing configuration from hot standby configuration to FDD twin path configuration]
Next, an example of the operation of changing the configuration from the hot standby configuration to the FDD twin path configuration in the wireless signal control unit 107 in the first wireless device 101 will be described in detail with reference to the flowchart in FIG. FIG. 5 is a flowchart for explaining an example of the operation of changing the configuration from the hot standby configuration to the FDD twin path configuration in the wireless signal control unit 107 in the first wireless apparatus 101 configuring the wireless communication system shown in FIG. . In the description of the flowchart in FIG. 5, the case where the wireless signal control unit 107 in the first wireless device 101 detects deterioration in channel quality will be described. However, wireless signal control in the second wireless device 201 facing wireless is described. It is needless to say that the same operation is performed by replacing the first wireless device 101 and the second wireless device 201 even when the unit 207 detects deterioration in channel quality.

  As shown in the flowchart of FIG. 5, in order to eliminate the influence of the interference wave from the adjacent channel, at first, before the start of the operation for changing the configuration from the hot standby configuration to the FDD twin path configuration, In order to synchronize the configuration change sequence with the second wireless device 201 on the opposite side, the determination unit 304 of the wireless signal control unit 107 in the first wireless device 101 transmits the second wireless device 201 on the opposite side. The opposing station configuration change request signal F requiring a change in configuration is included in the modulation scheme control signal q and multiplexed with the interface signal e in the first modulator 104-1 and the second modulator 104-2 To the second radio apparatus 201 on the other side (step S11). Step S11 is a system in which the first wireless device 101 requests the second wireless device 201 opposite in space to change the system configuration when detecting the transmission quality deterioration of the own wireless channel received signal a due to the adjacent channel interference wave. It becomes a change request step.

  When receiving the opposite station configuration change request signal F included in the modulation scheme control signal q from the first wireless device 101 (step S12), the second demodulator 201 of the opposite wireless party on the other side of the radio receives the first demodulator 205- In the first and second demodulators 205-2, the opposing station configuration change request signal F included in the modulation scheme control signal q is separated, and inter-station synchronization determination by the radio signal control unit 207 in the second wireless device 201 is performed. Output to unit 303. Since the opposing inter-station synchronization determination unit 303 tries to change the configuration from the hot standby configuration to the FDD twin-path configuration in the first wireless device 101 on the opposite side, the second wireless device 201 also synchronizes and performs similar configuration change operation. Recognizes that it is necessary to generate a response signal G for changing the configuration, and outputs the response signal G to the determination unit 304 of the wireless signal control unit 207 and an ACK (Acknowledge) signal indicating that the request has been accepted. Then, the modulation scheme control signal q including the opposite station configuration change request signal F is returned to the first radio apparatus 101 on the opposite side (step S13). Step S12 is a step of receiving a request for changing the configuration of the wireless transmission system in step S11, and step S13 is a step of returning that the system change of the wireless transmission system is started.

  The determination unit 304 of the wireless signal control unit 207 in the second wireless device 201 on the opposite side of the wireless output outputs the wireless control signal M to the signal control unit 308 to configure the transmission side from the hot standby configuration to the FDD twin path configuration It is instructed to change the radio frequency of the transmission, the change of the occupied band, and the change of the modulation method in order to change (step S15). Similarly, the determination section 304 on the first wireless apparatus 101 side, which has transmitted the modulation scheme control signal q including the opposite station configuration change request signal F to the second wireless apparatus 201 on the opposite side of the wireless connection, When the modulation scheme control signal q including the opposite station configuration change request signal F returned as an ACK signal from the second wireless device 201 on the opposite side is detected, the opposite station synchronization determination unit 303 generates a response signal G. And output to the determination unit 304 (step S14). The determination unit 304 that has received the response signal G outputs the wireless control signal M to the signal control unit 308 in the first wireless device 101, and changes the configuration from the hot standby configuration to the FDD twin path configuration on the reception side, It is instructed to change the radio frequency for reception, change the occupied band, and change the modulation method (step S16). Step S16 is a reception configuration change instruction step of changing the wireless reception system from the hot standby configuration to the FDD twin path configuration.

  One of the signals in the second wireless device 201 that has received the frequency setting signal T, which is an instruction to change the wireless frequency, from the wireless signal control unit 207 in the second wireless device 201 via the signal control unit 308 and the frequency control unit 309 In the first transmitter 202-1, the operating frequency is changed from the radio frequency f0 'to the lower side channel obtained by dividing the band of the radio frequency f0' in the hot standby configuration up and down, ie, the lower side radio frequency f1 '. In the other second transmitter 202-2, the operating frequency is set by changing the radio frequency f0 'to the upper channel obtained by dividing the band of the radio frequency f0' up and down, ie, the upper radio frequency f2 '(step S17). Similarly, in the first wireless device 101 that has received a frequency setting signal T that is an instruction to change the wireless frequency from the wireless signal control unit 107 in the first wireless device 101 via the signal control unit 308 and the frequency control unit 309 In one of the first receivers 103-1, the radio frequency f0 'is changed from the radio frequency f0' to the lower side channel obtained by dividing the radio frequency f0 'in the hot standby configuration up and down, ie, the lower radio frequency f1'. The other second receiver 103-2 changes the radio frequency f0 'from the radio frequency f0' to the upper channel obtained by dividing the radio frequency f0 'up and down, ie, the upper radio frequency f2' (step S18). Step S17 corresponds to the transmission frequency control step, and step S18 corresponds to the reception frequency control step.

  In addition, the second wireless device 201 receives an occupied band setting signal U as an instruction to change the occupied band from the wireless signal control unit 207 in the second wireless device 201 via the signal control unit 308 and the occupied band control unit 310. In the first modulator 204-1 and the second modulator 204-2, the occupied frequency band is changed to (1/2) of half of the occupied frequency band in the hot standby configuration (step S19) . Similarly, the first wireless device receives an occupied band setting signal U as an instruction to change the occupied band from the wireless signal control unit 107 in the first wireless device 101 via the signal control unit 308 and the occupied band control unit 310. In the first demodulator 105-1 and the second demodulator 105-2 in 101, each occupied frequency band is changed to (1/2) of half of the occupied frequency band in the hot standby configuration (Step S20). Step S19 corresponds to the transmission occupied band control step, and step S20 corresponds to the reception occupied band control step.

In addition, the second wireless device 201 receives the modulation scheme setting signal W serving as a modulation scheme change instruction from the wireless signal control unit 207 in the second wireless device 201 via the signal control unit 308 and the modulation scheme control unit 311. in the first modulator 204-1, and the second modulator 204-2 of the inner, each modulation scheme N modulation schemes 2 ^N during hot standby configuration value or 2 ^2N equivalent values were doubled Change and set (step S21). Similarly, a first wireless device that has received a modulation scheme setting signal W serving as a modulation scheme change instruction from the wireless signal control unit 107 in the first wireless device 101 via the signal control unit 308 and the modulation scheme control unit 311 In first demodulator 105-1 and second demodulator 105-2 in 101, the value obtained by doubling ^N of modulation method 2 ^{N in} the hot standby configuration, that is, the value equivalent to 2 2 ^N And set (step S22). Step S21 corresponds to a transmission modulation method control step, and step S22 corresponds to a reception modulation method control step.

  After that, the determination unit 304 of the wireless signal control unit 207 in the second wireless device 201 changes the radio frequency, the occupied band, and the modulation scheme in both the own second wireless device 201 and the other first wireless device 101. It is confirmed whether the setting is completed (step S23), and when it is recognized that the change setting is completed (Yes in step S23), the lower channel f1 'and the upper channel f2' are used as the wireless transmission system. The change operation to the FDD twin pass configuration is completed (step S25). Similarly, the determination unit 304 of the wireless signal control unit 107 in the first wireless device 101 changes the wireless frequency, the occupied band, and the modulation scheme in both the own first wireless device 101 and the second wireless device 201 on the opposite side. It is confirmed whether or not the setting is completed (step S24). When the change setting is completed (Yes in step S24), the FDD twin path configuration using the lower channel f1 'and the upper channel f2' as a wireless reception system The change operation of is completed (step S26).

  On the other hand, the determination unit 304 of the wireless signal control unit 206 in the second wireless device 201 indicates that the change setting has been completed in both or one of the own second wireless device 201 and the other first wireless device 101. If not recognized (No in step S23), the configuration change operation to the FDD twin path configuration fails, and after temporarily returning to the hot standby configuration that is the configuration before the configuration change (step S27), step S12 , And returns to the state of waiting for another configuration change request from the first wireless apparatus 101 on the opposite side. Similarly, the determination unit 304 of the wireless signal control unit 107 in the first wireless device 101 has completed the change setting in one or both of the own first wireless device 101 and the second wireless device 201 on the opposite side. Is not recognized (No in step S24), the configuration change operation to the FDD twin path configuration fails, and after temporarily returning to the hot standby configuration that is the configuration before the configuration change (step S28), The process returns to step S1 shown in FIG. 4 and starts again from the operation of detecting deterioration in channel quality.

  As shown in the above operation, when deterioration of channel quality occurs due to an interference wave of an adjacent channel, the operating frequency for reception on the side of the first wireless device 101, for transmission on the side of the second wireless device 201 on the opposite side. From the hot standby configuration in the normal operation state using each of the radio frequencies f0 / f0 'as the operation frequency of G, only the Return (downlink) lower channel (hot The lower radio frequency f1 'obtained by dividing the radio frequency f0' band in the standby configuration up and down and the upper channel (the upper radio frequency f2 'obtained by dividing the radio frequency f0' band in the hot standby configuration up and down) The configuration of the first wireless device 101 / second wireless device 201 is changed to the FDD twin path configuration using the two frequencies of (1) and (2), and wireless communication is performed with f0 / f1 '+ f2'.

  Here, a hot standby configuration using a wider occupied band radio frequency (f0 ') than an FDD twin path configuration using two radio frequencies divided into lower radio frequency f1' and upper radio frequency f2 ' However, even if propagation path fluctuations such as rainfall and fading occur, the propagation path fluctuation resistance which does not cause an error of the channel quality signal is high, so the hot standby configuration is suitable for normal operation.

  In the hot standby configuration, in the first wireless device 101, the first transmitter 102-1, the second transmitter 102-2, the first receiver 103-1, the second receiver 103-2, the second wireless In the apparatus 201, one of the first transmitter 202-1, the second transmitter 202-2, the first receiver 203-1 and the second receiver 203-2 and two transmitters / receivers make one working. Since it is possible to construct a working / standby configuration of a transmitter / receiver in which the other is in a standby state, it is also advantageous in terms of equipment failure rate and low power consumption operation.

  Therefore, when it is detected that the adjacent channel interference state is eliminated and the line quality is restored to the normal state, the cancellation of the adjacent channel interference state is detected in order to prevent the repetition of the frequent configuration change / configuration restoration operation. Then, until the predetermined return monitoring time T1 elapses, it is monitored whether or not the state in which the adjacent channel interference state has been canceled continues, and the cancellation state continues until the return monitoring time T1 elapses. If so, it is desirable to determine that the adjacent channel interference state has been eliminated and to perform an operation to return from the FDD twin path configuration to the hot standby configuration.

[Operation to determine that adjacent channel interference has decreased]
Next, the flowchart of FIG. 6 shows an example of the operation when the radio signal control unit 107 in the first radio apparatus 101 determines that the interference of the adjacent channel in the FDD twin path configuration is lower than the predetermined interference threshold. This will be described in detail with reference to. FIG. 6 shows that the radio signal control unit 107 in the first radio apparatus 101 configuring the radio communication system shown in FIG. 1 determines that the interference of the adjacent channel in the FDD twin path configuration is lower than a predetermined interference threshold. It is a flowchart for demonstrating an example of the operation | movement at the time of doing. In the description of the flowchart of FIG. 7, the case where the wireless signal control unit 107 in the first wireless device 101 detects a decrease in interference of the adjacent channel will be described. However, the wireless signal in the opposing second wireless device 201 Needless to say, even in the case where the control unit 207 detects a decrease in the interference of the adjacent channel, the same operation is performed just by replacing the first wireless device 101 and the second wireless device 201.

  As shown in the flowchart of FIG. 6, first, the channel quality monitoring unit 301 of the wireless signal control unit 107 in the first wireless device 101 performs the first demodulator 105-1 and the second demodulator 105 in the FDD twin path configuration. Receiving information m output from each of the second to third, and the error rate information of the line signal in each of the first demodulator 105-1 and the second demodulator 105-2 included in the received information m As a result of monitoring a certain channel quality signal A, both the first demodulator 105-1 and the second demodulator 105-2 detect that the deterioration state of the wireless channel quality has been eliminated and the normal channel quality has been restored. Then, a line deterioration signal B indicating that the deterioration of the line quality has been eliminated is generated and output to the determination unit 304 (step S31).

  Next, the determination unit 304 that has received the channel deterioration signal B indicating that the deterioration of the channel quality has been eliminated is from each of the first receiver 103-1 and the second receiver 103-2 in the first wireless device 101. Whether or not the received radio communication signal reception level h is an abnormal reception level causing an error in the received radio signal is checked by comparison with a predetermined reception threshold (step S32). When the wireless communication signal reception level h is lower than the predetermined reception threshold under the influence of rainfall, fading, etc. (No in step S32), recovery of the channel quality indicated by the channel degradation signal B It is determined that the cause is not the cancellation of adjacent channel interference (step S33).

  On the other hand, if the wireless communication signal reception level h has reached the reception threshold or higher and it is not an abnormal reception level (Yes in step S32), the next interference wave detection unit 107 outputs In both the side adjacent channel and the upper adjacent channel, it is checked whether the interference wave reception level p is lower than a predetermined interference threshold (step S34). If the interference wave reception level p of the lower adjacent channel, the upper adjacent channel, or both is not lower than the interference threshold (No in step S34), the influence of adjacent channel interference may still occur. Is determined, the return operation to the hot standby configuration is stopped, and the FDD twin path configuration is continued (step S37). On the other hand, when the interference wave reception level p of both the lower adjacent channel and the upper adjacent channel is lower than the interference threshold (Yes in step S34), it is determined that the quality deterioration due to adjacent channel interference is eliminated ( Step S35). The adjacent interference wave detection unit 106 continues the operation of detecting interference from the adjacent channel even in the FDD twin path configuration, and the reception levels of the lower adjacent channel and the upper adjacent channel are lower reception levels, respectively. Each of the detector 402-1 and the upper reception level detector 402-2 generates an interference wave reception level p indicating that no interference wave of the adjacent channel is generated when the both are not detected. Perform output operation.

  If it is determined that the quality deterioration due to the adjacent channel interference is eliminated, the determination unit 304 of the wireless signal control unit 107 cancels the quality deterioration due to the adjacent channel interference wave even after a predetermined return monitoring time T1 has passed. Condition is checked to start the change operation for returning the configuration from the FDD twin path configuration to the hot standby configuration (step S36). The determination sequence in the flow of FIG. 6 is continuously determined during the operation of the wireless device in the FDD twin path configuration.

[Operation for returning from FDD twin path configuration to hot standby configuration]
Next, an example of an operation for performing a configuration change for returning from the FDD twin path configuration to the hot standby configuration in the wireless signal control unit 107 in the first wireless device 101 will be described in detail with reference to the flowcharts of FIGS. 7A and 7B. Do. FIG. 7A illustrates an example of an operation for performing a configuration change for returning from the FDD twin path configuration to the hot standby configuration in the wireless signal control unit 107 in the first wireless apparatus 101 configuring the wireless communication system illustrated in FIG. FIG. 7B is the first half of the flowchart, and FIG. 7B is the second half of the flowchart. The points of A, B and C enclosed by ○ at the bottom of FIG. 7A are respectively connected to the points of A, B and C enclosed by ○ at the top of FIG. 7B. That is, the figure which joined FIG. 7A and FIG. 7B by point A, B, and C in both figures represents one flowchart. Thus, since one figure combining FIGS. 7A and 7B at points A, B and C in both figures represents one flowchart, hereinafter, the combined FIGS. 7A and 7B will be described. Let us say collectively as FIG. In the description of the flowchart in FIG. 7, the case where the wireless signal control unit 107 in the first wireless device 101 detects the elimination of deterioration in channel quality will be described. However, the wireless in the second wireless device 201 facing the wireless is described. It is needless to say that even when the signal control unit 207 detects the elimination of the deterioration of the channel quality, the same operation is performed only by replacing the first wireless device 101 and the second wireless device 201.

  As described above, even in the FDD twin-path configuration, the adjacent interference wave detection unit 106 continuously monitors the presence or absence of interference from the adjacent channel, and the reception levels of the lower adjacent channel and the upper adjacent channel are the same. , And the lower reception level detector 402-1 and the upper reception level detector 402-2 when no detection is performed, an interference wave reception level indicating that an interference wave of an adjacent channel is not generated. p is output to the determination unit 304.

  The determination unit 304 of the wireless signal control unit 107 that has received the interference wave reception level p determines that channel quality deterioration due to adjacent channel interference has been eliminated, and after receiving the interference wave reception level p, it determines in advance for each radio channel. It is monitored whether or not the state where the channel quality deterioration due to the adjacent channel interference has been eliminated continues until the defined recovery monitoring time T1 elapses, and the eliminated state continues until the recovery monitoring time T1 elapses. In this case, it is determined that the adjacent channel interference state has definitely been eliminated, and an operation of returning from the FDD twin path configuration to the original hot standby configuration is executed. Here, the return monitoring time T1 is a time set in advance for each wireless channel, and is registered and stored in the setting unit 307 in advance.

  As shown in the flowcharts of FIGS. 7A and 7B, the operation for returning from the FDD twin path configuration to the hot standby configuration is the reverse of the operation for changing the configuration from the hot standby configuration to the FDD twin path configuration shown in FIG. It becomes an operation.

  That is, first, the determination unit 304 of the wireless signal control unit 107 in the first wireless device 101 detects that the interference wave level of the adjacent channel is lowered by the interference wave reception level p output from the adjacent interference wave detection unit 106. When confirmed, counting of a predetermined return monitoring time T1 is started (step S41). When a state in which the interference wave level of the adjacent channel, that is, the interference wave reception level p becomes equal to or more than the predetermined interference threshold occurs while the recovery monitoring time T1 has not elapsed (No in step S42) The FDD twin path configuration is maintained as it is until it is confirmed that the channel quality deterioration state due to the adjacent channel interference has been eliminated again without executing the change operation for restoring the configuration from the FDD twin path configuration to the hot standby configuration.

  On the other hand, if the interference wave level of the adjacent channel, that is, the interference wave reception level p continues to be lower than the interference threshold, until the recovery monitoring time T1 elapses (Yes in step S42) (step S43 Yes), the process proceeds to step S44, and the change operation of restoring the configuration from the FDD twin path configuration to the hot standby configuration is started.

  Prior to starting the return operation to the hot standby configuration, first, to synchronize the configuration change sequence with the second wireless device 201 on the opposite side of the wireless, the wireless signal in the first wireless device 101 In the determination unit 304 of the control unit 107, the opposite station configuration change request signal F for requesting the second wireless device 201 on the opposite side to restore the configuration is included in the modulation scheme control signal q, and the first modulator 104- The first and second modulators 104-2 multiplex with the interface signal e, and transmit the multiplexed signal to the opposing second wireless device 201 (step S44).

  When receiving the opposite station configuration change request signal F included in the modulation scheme control signal q from the first wireless device 101 (step S45), the second demodulator 201 of the opposite wireless party on the other side of the radio receives the first demodulator 205- In the first and second demodulators 205-2, the opposing station configuration change request signal F included in the modulation scheme control signal q is separated, and inter-station synchronization determination by the radio signal control unit 207 in the second wireless device 201 is performed. Output to unit 303. Since the opposing inter-station synchronization determination unit 303 tries to return from the FDD twin-path configuration to the hot standby configuration in the first wireless device 101 on the opposite side, the second wireless device 201 also synchronizes and performs similar configuration recovery operation. Recognizes that it needs to be performed, generates a response signal G for performing configuration recovery, and outputs it to the determination unit 304 of the wireless signal control unit 207, and as an ACK (Acknowledge) signal indicating that a request has been accepted. Then, the modulation scheme control signal q including the opposite station configuration change request signal F is returned to the first radio apparatus 101 on the opposite side (step S46).

  The determination unit 304 of the wireless signal control unit 207 in the second wireless device 201 that has received the response signal G outputs the wireless control signal M to the signal control unit 308, and the transmission side returns from the FDD twin path configuration to the hot standby configuration. In order to perform the configuration change to be performed, it is instructed to perform the change of the radio frequency of the transmission, the change of the occupied band, and the change of the modulation scheme (step S48). Similarly, in the determination section 304 on the side of the first radio apparatus 101 that has transmitted the modulation scheme control signal q including the opposite station configuration change request signal F to the second radio apparatus 201 on the opposite party side, When the modulation scheme control signal q including the opposing station configuration change request signal F returned as an ACK signal from the second wireless device 201 side is detected, the opposing station synchronization determination unit 303 generates a response signal G, It is output to the determination unit 304 (step S47). The determination unit 304 that has received the response signal G outputs the wireless control signal M to the signal control unit 308 in the first wireless device 101 to change the receiving side from the FDD twin path configuration to the hot standby configuration. To change the reception radio frequency, change the occupied band, and change the modulation scheme (step S49).

  In the second wireless device 201 that has received the frequency setting signal T, which is an instruction to change the wireless frequency, from the wireless signal control unit 207 in the second wireless device 201 via the signal control unit 308 and the transmission frequency control unit 309-T. The first transmitter 202-1 changes the operating frequency from the lower channel in the FDD twin path configuration, that is, the lower radio frequency f1 'to the radio frequency f0' in the hot standby configuration, and The second transmitter 202-2 changes the operating frequency from the upper channel in the FDD twin path configuration, that is, the upper radio frequency f2 'to the radio frequency f0' in the hot standby configuration (step S50). Similarly, the first radio receiving the frequency setting signal T as an instruction to change the radio frequency from the radio signal control unit 107 in the first radio apparatus 101 via the signal control unit 308 and the reception frequency control unit 309-R. In one first receiver 103-1 in the device 101, the operating frequency is changed from the lower channel in the FDD twin path configuration, that is, the lower radio frequency f1 'to the radio frequency f0' in the hot standby configuration. In the other second receiver 103-2, the operating frequency is set by changing the upper channel in the FDD twin path configuration, ie, the upper radio frequency f1 ', to the radio frequency f0' in the hot standby configuration (step S51) .

  Also, a second occupied band setting signal U serving as an instruction to change the occupied band is received from the wireless signal control unit 207 in the second wireless device 201 via the signal control unit 308 and the transmission occupied band control unit 310-T. In the first modulator 204-1 and the second modulator 204-2 in the wireless device 201, the respective occupied frequency bands are changed to the occupied frequency bands in the hot standby configuration which is twice the occupied frequency band in the FDD twin path configuration. And set (step S52). Similarly, the radio signal control unit 107 in the first radio apparatus 101 receives, through the signal control unit 308 and the reception exclusive band control unit 310-R, the exclusive band setting signal U serving as an instruction to change the exclusive band. In the first demodulator 105-1 and the second demodulator 105-2 in one radio apparatus 101, each occupied frequency band is set to the occupied frequency band in the hot standby configuration which is twice the occupied frequency band in the FDD twin path configuration. Change and set (step S53).

Also, a second modulation scheme setting signal W serving as a modulation scheme change instruction is received from the wireless signal control unit 207 in the second wireless device 201 via the signal control unit 308 and the transmission modulation scheme control unit 311 -T. In the first modulator 204-1 and the second modulator 204-2 in the wireless device 201, a value obtained by setting ^N of the modulation method 2 N to (1/2) in the FDD twin path configuration, that is, hot standby The value is changed to a value equivalent to ^N of the modulation method 2 ^N at the time of configuration (step S 54). Similarly, a modulation scheme setting signal W serving as a modulation scheme change instruction is received from the wireless signal control unit 107 in the first wireless device 101 via the signal control unit 308 and the reception modulation scheme control unit 311 -R. In the first demodulator 105-1 and the second demodulator 105-2 in one radio apparatus 101, a value obtained by setting ^N of the modulation scheme 2 N to (1/2) in the FDD twin-path configuration in each modulation scheme, ie, The value is changed to a value equivalent to ^N of the modulation method 2 ^{N in} the hot standby configuration and set (step S 55).

  After that, the determination unit 304 of the wireless signal control unit 207 in the second wireless device 201 changes the setting of the radio frequency, the occupied band, and the modulation method for both the second wireless device 201 and the first wireless device 101 on the other side. Is confirmed (step S56), and when it is recognized that the change setting is completed (Yes in step S56), the return operation to the hot standby configuration using the wireless channel f0 'as the wireless transmission system And one of two transmission systems, ie, the first transmitter 202-1 and the first modulator 204-1, or the second transmitter 202-2 and the second modulator 204-2. The wireless transmission operation is started using the transmission system (for example, the transmission system that has been the latest operation system) as the active system (the other transmission system is the standby system in the standby state) (step S58). Similarly, the determination unit 304 of the wireless signal control unit 107 in the first wireless device 101 changes the wireless frequency, the occupied band, and the modulation scheme in both the own first wireless device 101 and the second wireless device 201 on the opposite side. It is confirmed whether the setting is completed (step S57), and when the change setting is completed (Yes in step S57), the return operation to the hot standby configuration using the wireless channel f0 'is completed as the wireless reception system. Of two reception systems, that is, one of the first receiver 103-1 and the first demodulator 105-1, or the second receiver 103-2 and the second demodulator 105-2 (for example, The wireless receiving operation is started using the latest active system as the active system (the other receiving system as the standby system in the standby state) (step S59).

  When it is found that a failure has occurred in any one of the two transmission systems / reception systems (for example, the transmission system that has recently been made into the active system). In this case, the wireless transmission / reception operation is started using the other transmission system / reception system (for example, the transmission system that has recently been used as the spare system).

  On the other hand, when the determination unit 304 of the wireless signal control unit 207 in the second wireless device 201 can not recognize that the change setting has been completed (No in step S56), the configuration recovery operation to the hot standby configuration has failed. In this case, after temporarily returning to the FDD standby configuration that is the configuration before the configuration return (step S60), the state returns to step S45 and waits for another configuration return request from the first wireless device 101 on the opposite side. Return to Similarly, when the determination unit 304 of the wireless signal control unit 107 in the first wireless device 101 can not recognize that the change setting is completed (No in step S57), the configuration recovery operation to the hot standby configuration fails In this case, after temporarily returning to the FDD twin path configuration which is the configuration before the configuration return (step S61), the operation returns to step S31 shown in FIG. Start over.

  As shown in the above operation, when it is detected that the channel quality deterioration due to the interference wave of the adjacent channel is eliminated, the lower channel (the lower side of the band of the radio reception frequency f0 'in the hot standby configuration is divided into upper and lower Receive radio signals from the FDD twin-path configuration using two frequencies: the radio frequency f1 'of the upper channel and the upper radio frequency f2' that divides the band of each of the radio reception frequency f0 'in the hot standby configuration up and down The configuration is restored to the hot standby configuration in the normal operation state using the frequency f0 '.

  Next, an operation example of the wireless communication system shown in FIG. 1 to FIG. 3 as an embodiment of the present invention will be described in more detail with reference to the explanatory view of FIG. FIG. 8 is an explanatory diagram for describing an example of the operation of the wireless communication system shown in FIGS. 1 to 3. Return (downlink: wireless reception frequency f 0 ′) of the first wireless device 101 is an adjacent interference wave. The radio frequency change, occupancy band change, modulation scheme change, and receive data c at the time of changing the configuration from the hot standby configuration to the FDD twin path configuration, taking as an example the case where the line transmission quality is degraded due to An example of the operation of the transmission data combiner 111 that outputs the data is described. FIG. 8 explains the outline of the hot standby configuration and the outline of the FDD twin path configuration.

  In FIG. 8, in order to simplify the drawing, the names of the functional blocks are omitted, and only the reference numerals attached to FIG. 1 are displayed in the frame of each functional block. That is, reference numerals 101, 102-1, 102-2, 103-1, 103-2, 104-1, 104-2, 105-1, 105-2, 110, 111, 201 shown in the functional block of FIG. , 202-1, 202-2, 203-1, 203-2, 204-1, 204-2, 205-1, 205-2, 210 and 211 are each selected from the first in the wireless communication system shown in FIG. First transmitter 102-1, second transmitter 102-2, first receiver 103-1, second receiver 103-2, first modulator 104-1, second modulator 104 in the wireless device 101 2, first demodulator 105-1, second demodulator 105-2, radio signal synthesizer 110, transmission data synthesizer 111, first transmitter 202-1 in second radio apparatus 201, second transmitter 202-2, first receiver 203-1, second receiver 203-2, first modulator 204-1, second modulator 204-2, first demodulator 205-1, second demodulator 205- 2 represents the radio signal combiner 210 and the transmission data combiner 211, respectively.

  Further, in the hot standby configuration (1) of FIG. 8, both the first wireless device 101 and the second wireless device 201 operate the modulation scheme by QPSK, and the first transmission system and the second transmission system are used as a working system, and the second transmission system is used. And the case where the second receiving system is reserved. In the hot standby configuration, the transmission data d input to the transmission data combiner 211 of the second wireless device 201 is wirelessly transmitted to the first wireless device 101 of the opposite station using the wireless frequency f0 ′, and the first wireless The apparatus 101 side outputs a radio signal wirelessly transmitted using the radio frequency f 0 ′ from the transmission data combiner 111 of the first radio apparatus 101 to the outside as reception data c. On the other hand, in FIG. 8 FDD twin path configuration (2), the Return (downlink: radio reception frequency f0 ') of the first wireless device 101 is operated in the FDD twin path configuration due to the influence of interference waves from the lower adjacent channel. Lower radio frequency f1 ′, upper radio frequency obtained by dividing the band of the radio frequency f0 ′ in the hot standby configuration into upper and lower parts by the transmission data d input to the transmission data combiner 211 of the second radio apparatus 201. Using two frequencies f2 'and changing to the 16 QAM modulation scheme, radio transmission is performed by two redundancy of the radio frequency band A and the radio frequency band B, and the first radio apparatus 101 side has two lower radio frequencies f1 ', The radio signal wirelessly transmitted by the FDD method using the upper radio frequency f2' is received from the transmission data combiner 111 of the first radio apparatus 101 as received data c (ie, received transmission data 111 (j)) Output to It shows the state. Since there is an interference wave in the lower adjacent channel, it is transmitted and demodulated in the radio frequency band A and an error is mixed in the data as in 105-1 (b), but it is transmitted and demodulated in the radio frequency band B The stored data 105-2 (b) indicates that no error has occurred.

  In the case of the hot standby configuration (1) shown in FIG. 8, the first wireless device 101 side includes the first modulator 104-1 and the first transmitter 102-1, the second modulator 104-2, and the second First and second two wireless transmission systems comprising a transmitter 102-2, a first receiver 103-1 and a first demodulator 105-1, a second receiver 103-2 and a second demodulator A radio signal of radio frequency f0 is transmitted using one of the first and second radio reception systems of 105-2 as the active system, and a radio frequency f0 'is transmitted. Are received and demodulated to generate received data c. On the other hand, the opposing second wireless device 201 side comprises a first modulator 204-1, a first transmitter 202-1, a second modulator 204-2, and a first transmitter 202-2. First and second comprising the second two wireless transmission systems, a first receiver 203-1 and a first demodulator 205-1, a second receiver 203-2 and a second demodulator 205-2 The radio signal of radio frequency f0 'is transmitted using any one radio transmission / reception system among the two radio reception systems of the above, and radio frequency f0 is received and demodulated to generate reception data c. .

  In the hot standby configuration (2) shown in FIG. 8, for example, when the radio frequency f0 'is operated using QPSK (Quadrature Phase Shift Keying) modulation, any one of the upper and lower sides of the own radio channel may be used. When an adjacent interference wave is newly added to any adjacent channel (in the example shown in FIG. 8, the left or lower adjacent channel), interference such as the shaded portion shown in "the adjacent interference occurrence situation" occurs. As a result, an error occurs in the QPSK signal of the own radio channel. When such adjacent channel interference occurs, as long as the adjacent channel interference continues, the state in which the transmission quality of the wireless communication in operation at the wireless frequency of f0 'continues is continued.

  In the conventional wireless communication system, as long as the operation of the adjacent channel is continued, the degradation state of the transmission quality due to the interference of the adjacent channel is fixed as it is, and the operation of the adjacent channel is stopped. The state where the transmission quality of the radio signal of the own radio channel is not improved continues until the wave disappears. In a radio communication system having a configuration as shown in FIGS. 1 to 3 showing an embodiment of the present invention, when a degradation state of transmission quality occurs due to adjacent channel interference, as in the FDD twin path configuration shown in FIG. By changing the device configuration to the FDD twin-path configuration with the hot standby configuration, there is no influence of the interference wave in the radio frequency band B transmitting at the radio frequency of f2 ', so that the transmission quality drops out due to adjacent channel interference. Radio transmission quality can be improved. In addition, by changing the device configuration independently of the wireless transmission system and the wireless reception system, there is no change in the device configuration for the wireless channel transmitting on the wireless frequency of f0, and the adjacent channel interference wave is maintained as it is in the hot standby configuration. Because there is no influence of the radio transmission quality, the operation can be continued without deterioration.

  The FDD twin path configuration (2) shown in FIG. 8 shows an example in which the configuration is changed due to the influence of the adjacent channel interference wave on the downlink (the radio reception frequency f0 '). Therefore, the uplink (wireless reception frequency f0) is an operation configuration in which the operation is continued in the hot standby configuration.

The reception frequency of the first receiver 103-1 of the first radio apparatus 101 and the transmission frequency of the first transmitter 202-1 of the second radio apparatus 201 are set from the radio frequency f0 'in the hot standby configuration to the radio frequency f1' ( The band of the radio frequency f0 'is changed to the lower radio frequency band A) obtained by dividing the band of the radio frequency f0' up and down, the reception frequency of the second receiver 103-2 of the first radio apparatus 101, the second transmitter of the second radio apparatus 201 Two radios by changing the transmission frequency of 202-2 from radio frequency f0 'in the hot standby configuration to radio frequency f2' (upper radio frequency band B obtained by dividing the band of radio frequency f0 'up and down) Change to FDD twin-path configuration using frequency (f1 ', f2'), and wireless communication using two wireless frequencies (f1 ', f2') from radio frequency f0 'in the hot standby configuration change. That is, the apparatus configuration of the uplink of the radio frequency f0 where the transmission quality has not deteriorated does not change.

Further, in the FDD twin path configuration, as shown in FIG. 8, the first demodulator 105-1, the second demodulator 105-2 of the first wireless device 101, and the first modulator 204-1 of the second wireless device 201. , each of the second modulator 204-2, N is twice the 16QAM modulation method of the modulation scheme ^{2 N} modulation scheme from QPSK modulation during hot standby configuration (i.e. modulation method ^{2 N} N = 2 from N = It is changed to 4 (2 × 2) and a modulation scheme of twice N. Furthermore, as shown in "a state where the respective occupied bands of the two radio frequencies (f1 'and f2') are changed to the FDD twin path configuration shown in Fig. 8, the lower radio frequency band in the hot standby configuration is By dividing the frequency band A (the radio frequency f1 ') and the upper radio frequency band B (the radio frequency f2') into two equal parts and changing it to (1/2) each in the hot standby configuration, Construct a mechanism to realize twin-path transmission of two waves within the occupied bandwidth used in hot standby configuration.

  As a result, as shown in “a state changed to the FDD twin path configuration”, when changing to the FDD twin path configuration, in the first wireless device 101 that has received the wireless signal from the second wireless device 201, the lower radio frequency Although there is still an error (error) in the demodulated data in the demodulated data 105-1 (b) of the band A (radio frequency f1 '), the demodulated data of the upper radio frequency band B (radio frequency f2') In 105-2 (b), no error occurs because there is no influence of interference waves, and if the demodulated data 105-2 (b) in the lower radio frequency band B (radio frequency f2 ') is used, It becomes possible to carry out transmission.

  That is, as shown in FIG. 8 “combining of demodulated data”, the transmission data combiner 111 of the first wireless device 101 has the demodulated data 105-2 (b) containing no error and the demodulated data containing an error Although both data of 105-1 (b) are input, the transmission data combiner 111 generates a demodulation error due to the influence of the adjacent interference wave on the demodulated data 105-1 (b) from the error occurrence condition. Of the received data, and select and output the received data as transmission data 111 (j), that is, received data c. Thus, even if an interference wave of an adjacent channel is generated, the reception data c, which is the output of the transmission data synthesizer 111, eliminates an error due to the interference wave and outputs normal transmission data not including an error. be able to.

  Here, as a method of selecting which demodulation data is selected according to the error occurrence situation, for example, an error correction situation by an error correction code of a demodulator, an error detection situation using a parity code, a reception level fluctuation situation, etc. It is obvious from the known art that the method of determining from can be applied.

  As described above in detail, the features of the wireless communication system of the present embodiment are as follows. That is, as shown in FIG. 1 to FIG. 3 and FIG. 8, the wireless communication system of the present embodiment has, for example, the first wireless device 101 and the second wireless device 101 from the viewpoint of effective frequency utilization as a hot standby configuration in the normal operation state. When wireless transmission is performed by the wireless device of the wireless device 201, wireless communication is performed by occupying a specific assigned frequency band using only one wireless frequency f0, f0 ′ assigned in advance, (1 + 1) redundancy It is directed to a wireless communication system of configuration. In the radio communication system having such a configuration, for example, another radio communication system newly starts operation, and the interference wave is generated in the adjacent channel of the radio channel of the radio frequency f0 ', When only the transmission quality of the wireless signal is affected, the reception system of the first wireless device 101 and the transmission system of the second wireless device 201 are changed from the hot standby configuration to the FDD twin path configuration. Then, the frequency band of the radio frequency f0 'is divided into (1/2), and two frequency bands of the lower radio frequency band A (radio frequency f1') and the upper radio frequency band B (radio frequency f2 ') In the first data set of the first wireless device 101 of one system, and the first data set 202-1 of the second wireless device 201, the same data is divided into two frequency bands, The wireless transmission is performed using the lower radio frequency band A (or the upper radio frequency band B), and the second receiver 103-2 of the first wireless device 101 of the other system and the second transmitter 202 of the second wireless device 201 For -2, radio transmission is performed using the upper radio frequency band B (or the lower radio frequency band A).

Furthermore, in order to maintain the transmission capacity of the radio signal as it is, the occupied bands of the lower radio frequency band A and the upper radio frequency band B are changed to (1/2) in the hot standby configuration, and the modulation method the N 2 ^N, the (N = 2) of the QPSK modulation method at the time of hot standby configurations, N is changed to (N = 4) of two times the 16QAM modulation scheme. Then, among the wireless reception signals of the first receiver 103-1 and the second receiver 103-2 of the first wireless device 101, a wireless signal with good reception quality is transmitted data combiner of the first wireless device 101. Combining at 111 makes it possible to improve the degradation of the transmission quality of the wireless signal due to adjacent channel interference.

In the radio communication system shown in FIG. 8, when changing the configuration from the hot standby configuration to the FDD twin path configuration, ^N of modulation scheme 2 N is 2 from (N = 2) of QPSK modulation scheme (2 ² ). Although the example in the case of changing to (N = 4) of the double 16 QAM modulation system (2 ⁴ ) has been shown, the present invention is not limited to such a case. For example, it may be the case that ^N of modulation scheme 2 N is doubled to (N = 8) of 256 QAM modulation scheme (2 ⁸ ) from (N = 4) of 16 QAM modulation scheme (2 ⁴ ) . That is, if ^N of the modulation scheme 2 ^N is controlled to be doubled, the same effect as described above can be obtained regardless of the modulation scheme of any value of N.

  The wireless communication system, the wireless device, and all or part of the wireless communication methods of the embodiments and examples described above can be realized by hardware, software, or a combination thereof. Here, to be realized by software means to be realized by a computer reading and executing a program. In the case of hardware configuration, part or all of the components of the wireless communication system or wireless device illustrated in FIGS. 1 to 3 can be implemented using, for example, an LSI (Large Scale Integrated circuit), an ASIC (Application Specific Integrated Circuit), or a gate. It can be configured by an integrated circuit (IC) such as an array or an FPGA (field programmable gate array).

  When configured by software, components of the wireless communication system and the wireless device (for example, the adjacent interference wave detection units 106 and 206 shown in FIGS. And a storage unit such as a hard disk and a ROM, a display unit such as a liquid crystal display, etc. storing a program describing the function of a part or all of the wireless signal control unit 107, 207) and data necessary for calculation In a computer including a DRAM, a CPU, and a bus connecting the respective components, information necessary for calculation can be stored in the DRAM and realized by causing the CPU to operate the program.

  The programs can be stored and provided to a computer using various types of non-transitory computer readable media. Non-transitory computer readable media include tangible storage media of various types. Examples of non-transitory computer readable media are magnetic recording media (eg flexible disk, magnetic tape, hard disk drive), magneto-optical recording media (eg magneto-optical disk), CD-ROM (Read Only Memory), CD- R, CD-R / W, semiconductor memory (for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM (random access memory)) are included. Also, the programs may be supplied to the computer by various types of transitory computer readable media. Examples of temporary computer readable media include electrical signals, light signals, and electromagnetic waves. The temporary computer readable medium can provide the program to the computer via a wired communication path such as electric wire and optical fiber, or a wireless communication path.

  The configuration of the preferred embodiment of the present invention has been described above. However, it should be noted that such an embodiment is merely an example of the present invention and does not limit the present invention. It will be readily understood by those skilled in the art that various modifications and variations can be made according to a particular application without departing from the scope of the present invention.

  A part or all of the above embodiment may be described as in the following appendices, but is not limited to the following configuration.

(Supplementary Note 1)
A wireless communication system for performing point-to-point wireless communication between an opposing first wireless device and a second wireless device, comprising:
Each of the first wireless device and the second wireless device is
A first wireless transmission system including a first transmitter capable of individually setting an operating frequency which is a center frequency of a wireless frequency band, and a first modulator capable of individually setting a modulation scheme and a wireless occupation band.
A second radio transmission system including a second transmitter capable of individually setting an operating frequency which is a center frequency of the radio frequency band, and a second modulator capable of individually setting a modulation scheme and a radio occupied band;
A first radio receiving system including a first receiver capable of individually setting an operating frequency which is a center frequency of a radio frequency band, and a first demodulator capable of individually setting a modulation scheme and a radio occupied band;
A second radio reception system including: a second receiver capable of individually setting an operating frequency which is a center frequency of a radio frequency band; and a second demodulator capable of individually setting a modulation scheme and a radio occupied band (1 + 1) redundant configuration,
Each of the first radio apparatus and the second radio apparatus uses a radio transmission system of one of the first and second radio transmission systems as a working radio frequency, and uses a predetermined radio frequency assigned in advance as an operating frequency. In a wireless communication system capable of a hot standby configuration in which a transmission operation to a wireless device on the other party side is performed, and the other wireless transmission system is used as a standby system to stop the wireless output and stand by,
Each of the first wireless device and the second wireless device is
Channel quality monitoring means for detecting whether the wireless transmission quality of the received signal of the own wireless channel has deteriorated;
Adjacent interference wave detection means for detecting whether the cause of the deterioration of the transmission quality of the received signal is due to an adjacent channel interference wave to a radio frequency band occupied as the radio frequency used by the own radio device;
The operating frequency of the first transmitter is divided into upper and lower radio frequency bands in the hot standby configuration, and the operating frequency of the second transmitter is in the hot standby configuration. The upper radio frequency when dividing the radio frequency band up and down, or the lower radio frequency when dividing the radio frequency band in the hot standby configuration up and down, into the upper radio frequency when dividing the radio frequency band up and down, And frequency control means for changing the frequency from the radio frequency in the hot standby configuration to an upper radio frequency when the operating frequency of the second receiver is divided into upper and lower bands of the radio frequency in the hot standby configuration;
The N (N: natural number) of the modulation scheme 2 ^N of each of the first modulator and the second modulator, or the first demodulator and the second demodulator, is at least doubled in the hot standby configuration Modulation scheme control means to be changed;
Occupied band control means for changing the occupied band of each of the first modulator and the second modulator or the first demodulator and the second demodulator to a half occupied band in the hot standby configuration;
Transmission data combining means for selecting a received signal with better quality from the received signals received by each of the first receiver and the second receiver and combining them as received data;
When it is determined that the wireless transmission quality of the received signal is degraded due to the adjacent channel interference wave, the frequency control unit, the modulation scheme control unit, and the occupation for the first and second wireless reception systems in which the degradation is detected The band control means is controlled to change the configuration from the hot standby configuration to an FDD twin path configuration in which the same data is received using two radio frequencies, the lower radio frequency and the upper radio frequency. The frequency control means, the modulation method control means, and the modulation method control means for the first and second radio transmission systems when receiving a deterioration notification of the radio transmission quality of the received signal due to the adjacent channel interference wave from the radio apparatus on the opposite side. Controlling the occupied band control means to control the lower radio frequency and the upper radio frequency from the hot standby configuration; The configuration changing means for equipment configuration changes to FDD Tsuinpasu configured for transmitting the same data using One radio frequency,
A wireless communication system comprising:

(Supplementary Note 2)
The frequency control means individually sets an operating frequency which is a central frequency of a radio frequency band used by the first transmitter and the second transmitter, or the first receiver and the second receiver. The function of returning each operating frequency from the lower radio frequency and the upper radio frequency to the original radio frequency in the hot standby configuration;
In the hot standby configuration, the modulation scheme control means halves ^N of the modulation scheme 2 ^N of each of the first modulator and the second modulator, or the first demodulator and the second demodulator. With the ability to revert to the original modulation scheme of
The occupied band control means doubles radio occupied bands of the first modulator and the second modulator, or the first demodulator and the second demodulator, respectively, to obtain the original in the hot standby configuration. As well as the function of returning to the occupied bandwidth of
When it is determined that the wireless transmission quality deterioration of the received signal due to the adjacent channel interference wave can be eliminated, the first and second wireless reception systems are the frequency control unit, the modulation scheme control unit, and the occupied band control Control means for returning from the FDD twin path configuration to the original hot standby configuration, or when receiving notification of wireless transmission quality degradation cancellation of the received signal by the adjacent channel interference wave from the opposing wireless device, Configuration return means for controlling the frequency control means, the modulation scheme control means, and the occupied band control means to return the first and second radio transmission systems from the FDD twin path configuration to the original hot standby configuration. The wireless communication system according to claim 1, comprising:

(Supplementary Note 3)
The configuration recovery means is configured to recover the original hot state from the FDD twin path configuration when the wireless transmission quality degradation cancellation state of the received signal due to the adjacent channel interference wave continues for a predetermined time as a recovery monitoring time. The wireless communication system according to appendix 2, wherein an operation of returning to a standby configuration is performed.

(Supplementary Note 4)
When changing the configuration from the hot standby configuration to the FDD twin path configuration by the configuration changing means, or when returning from the FDD twin path configuration to the original hot standby configuration by the configuration restoring means, the first wireless radio The inter-station synchronization determination means is further provided for performing synchronization between operation at the time of configuration change between the device and the second wireless device or at the time of configuration return. The wireless communication system according to any one.

(Supplementary Note 5)
A wireless communication method by a wireless communication system for performing point-to-point wireless communication between a facing first wireless device and a second wireless device,
Each of the first wireless device and the second wireless device includes a first wireless transmission system including a first transmitter and a first modulator, and a first wireless reception including a first receiver and a first demodulator. A (1 + 1) redundancy configuration comprising a system, a second radio transmission system comprising a second transmitter and a second modulator, and a second radio reception system comprising a second receiver and a second demodulator Applied to a wireless communication system, using any one of the first and second wireless transmission systems as a working radio frequency and using a specific radio frequency assigned in advance as an operating frequency In the wireless communication method capable of the hot standby configuration, the wireless transmission operation of the second embodiment is performed and the other wireless transmission system is used as a backup system to stop the wireless transmission operation and to stand by
The first wireless device is
A line quality monitoring step of detecting whether the radio transmission quality of the received signal of the own radio line has deteriorated;
An adjacent interference wave detection step of detecting whether the cause of the deterioration of the radio transmission quality of the received signal is due to an adjacent channel interference wave to a radio reception frequency band occupied as the radio frequency used by the own radio device;
In the lower standby frequency when the operating frequency of the first receiver is divided into upper and lower bands of the wireless frequency in the hot standby configuration, the operating frequency of the second receiver is in the hot standby configuration. A reception frequency control step of changing the frequency from the radio frequency in the hot standby configuration to the upper radio frequency when the frequency band is divided into upper and lower parts;
A receiving modulation scheme control step of changing N (N: natural number) of the modulation scheme 2 ^N of each of the first demodulator and the second demodulator to at least double in the hot standby configuration;
A reception occupied band control step of changing an occupied band of each of the first demodulator and the second demodulator to a half occupied band in the hot standby configuration;
A transmission data combining step of selecting a reception signal with better radio transmission quality from the reception signals received by the first receiver and the second receiver and combining them as reception data;
When it is determined that the wireless transmission quality of the received signal is deteriorated due to the adjacent channel interference wave, the first and second reception frequency control steps, the reception modulation scheme control step, and the reception exclusive band control step are used to determine There is a receiving configuration changing step of changing the configuration of the second receiving system from the hot standby configuration to an FDD twin-path configuration in which the same data is received using the two lower radio frequencies and the lower radio frequency. And
The second wireless device is
The operating frequency of the second transmitter is divided into upper and lower radio frequencies when the operating frequency of the first transmitter is divided into upper and lower bands of the radio frequency in the hot standby configuration. A transmission frequency control step of changing the frequency from the radio frequency in the hot standby configuration to an upper radio frequency when the frequency band is divided into upper and lower parts;
A transmission modulation scheme control step of changing N (N: natural number) of the modulation scheme 2 ^N of each of the first modulator and the second modulator by at least twice in the hot standby configuration;
A transmission occupied band control step of changing an occupied band of each of the first modulator and the second modulator to a half occupied band in the hot standby configuration;
The transmission frequency control step, the transmission modulation scheme control step, and the transmission occupancy band control step are used when the radio transmission quality deterioration notification of the reception signal is received from the first radio apparatus by the adjacent channel interference wave. Transmission configuration for changing the configuration of the first and second transmission systems from the hot standby configuration to an FDD twin-path configuration in which the same data is transmitted using the two lower radio frequencies and the lower radio frequency and the upper radio frequency Change step,
A wireless communication method comprising:

(Supplementary Note 6)
The receiving frequency control step returns the operating frequency of each of the first receiver and the second receiver from the lower radio frequency and the upper radio frequency to the original radio frequency in the hot standby configuration. In addition,
The transmission frequency control step returns the operating frequency of each of the first transmitter and the second transmitter from the lower radio frequency and the upper radio frequency to the original radio frequency in the hot standby configuration. In addition,
The reception modulation scheme control step further includes the step of halving N of the modulation scheme 2N of each of the first demodulator and the second demodulator to return to the original modulation scheme in the hot standby configuration,
The transmission modulation scheme control step further includes the step of halving N of the modulation scheme 2N of each of the first modulator and the second modulator to return to the original modulation scheme in the hot standby configuration,
The reception exclusive band control step further includes the step of doubling the respective exclusive bands of the first demodulator and the second demodulator to restore the original exclusive bands in the hot standby configuration,
The transmission occupied band control step further includes the step of doubling the occupied bands of each of the first modulator and the second modulator and returning them to the original occupied band in the hot standby configuration,
If it is determined that the wireless transmission quality deterioration of the received signal due to the adjacent channel interference wave can be eliminated, the first wireless device performs the reception frequency control step, the reception modulation scheme control step, the reception exclusive band control step Further comprising a receive configuration recovery step for returning from the FDD twin path configuration to the original hot standby configuration using
The transmission frequency control step, the transmission modulation scheme control step, and the transmission occupancy band, when the second wireless device receives a notification of quality degradation cancellation of the received signal by the adjacent channel interference wave from the first wireless device. The wireless communication method according to claim 5, further comprising a transmission configuration restoration step for returning from the FDD twin path configuration to the original hot standby configuration using a control step.

(Appendix 7)
The FDD twin path when the reception configuration recovery step and the transmission configuration recovery step continue the wireless transmission quality degradation cancellation state of the received signal due to the adjacent channel interference wave for a predetermined time as recovery monitoring time The wireless communication method according to claim 6, characterized in that an operation of returning to the original hot standby configuration from the configuration is executed.

(Supplementary Note 8)
When changing the configuration from the hot standby configuration to the FDD twin path configuration in the reception configuration changing step and the transmission configuration changing step, or the original hot standby from the FDD twin path configuration in the reception configuration returning step and the transmission configuration returning step When returning to the configuration, the opposite station for synchronizing the configuration change sequence of the operation at the time of configuration change or the operation at the time of configuration return between the two wireless devices facing each other and the first wireless device facing wirelessly The wireless communication method according to any one of appendices 5 to 7, further comprising an inter-synchronization determination step.

(Appendix 9)
A wireless device of a wireless communication system for performing point-to-point wireless communication between two opposing wireless devices, comprising:
A first wireless transmission system including a first transmitter capable of individually setting an operating frequency which is a center frequency of a wireless frequency band, and a first modulator capable of individually setting a modulation scheme and a wireless occupation band.
A second radio transmission system including a second transmitter capable of individually setting an operating frequency which is a center frequency of the radio frequency band, and a second modulator capable of individually setting a modulation scheme and a radio occupied band;
A first radio receiving system including a first receiver capable of individually setting an operating frequency which is a center frequency of a radio frequency band, and a first demodulator capable of individually setting a modulation scheme and a radio occupied band;
A second radio reception system including: a second receiver capable of individually setting an operating frequency which is a center frequency of a radio frequency band; and a second demodulator capable of individually setting a modulation scheme and a radio occupied band (1 + 1) redundant configuration,
Using one of the first and second wireless transmission systems as a working wireless transmission system and using a specific wireless frequency assigned in advance as an operating frequency In the wireless apparatus capable of the hot standby configuration, the standby mode is performed by setting the other wireless transmission system as a standby system and stopping the wireless output.
Channel quality monitoring means for detecting whether the wireless transmission quality of the received signal of the own wireless channel has deteriorated;
Adjacent interference wave detection means for detecting whether the cause of the deterioration of the transmission quality of the received signal is due to an adjacent channel interference wave to a radio frequency band occupied as the radio frequency used by the own radio device;
The operating frequency of the first transmitter is divided into upper and lower radio frequency bands in the hot standby configuration, and the operating frequency of the second transmitter is in the hot standby configuration. The upper radio frequency when dividing the radio frequency band up and down, or the lower radio frequency when dividing the radio frequency band in the hot standby configuration up and down, into the upper radio frequency when dividing the radio frequency band up and down, And frequency control means for changing the frequency from the radio frequency in the hot standby configuration to an upper radio frequency when the operating frequency of the second receiver is divided into upper and lower bands of the radio frequency in the hot standby configuration;
The N (N: natural number) of the modulation scheme 2 ^N of each of the first modulator and the second modulator or the first demodulator and the second demodulator is at least doubled in the hot standby configuration Modulation scheme control means to be changed;
Occupied band control means for changing the occupied band of each of the first modulator and the second modulator or the first demodulator and the second demodulator to a half occupied band in the hot standby configuration;
Transmission data combining means for selecting a received signal with better quality from the received signals received by each of the first receiver and the second receiver and combining them as received data;
When it is determined that the wireless transmission quality of the received signal is degraded due to the adjacent channel interference wave, the frequency control unit, the modulation scheme control unit, and the occupation for the first and second wireless reception systems in which the degradation is detected The band control means is controlled to change the configuration from the hot standby configuration to an FDD twin path configuration in which the same data is received using two radio frequencies, the lower radio frequency and the upper radio frequency. The frequency control means, the modulation method control means, and the modulation method control means for the first and second radio transmission systems when receiving a deterioration notification of the radio transmission quality of the received signal due to the adjacent channel interference wave from the radio apparatus on the opposite side. Controlling the occupied band control means to control the lower radio frequency and the upper radio frequency from the hot standby configuration; The configuration changing means for configuration changes to the FDD Tsuinpasu configured for transmitting the same data using One radio frequency,
A wireless device comprising:

(Supplementary Note 10)
The frequency control means individually sets an operating frequency which is a central frequency of a radio frequency band used by the first transmitter and the second transmitter, or the first receiver and the second receiver. The function of returning each operating frequency from the lower radio frequency and the upper radio frequency to the original radio frequency in the hot standby configuration;
In the hot standby configuration, the modulation scheme control means halves ^N of the modulation scheme 2 ^N of each of the first modulator and the second modulator, or the first demodulator and the second demodulator. With the ability to revert to the original modulation scheme of
The occupied band control means doubles radio occupied bands of the first modulator and the second modulator, or the first demodulator and the second demodulator, respectively, to obtain the original in the hot standby configuration. As well as the function of returning to the occupied bandwidth of
When it is determined that the wireless transmission quality deterioration of the received signal due to the adjacent channel interference wave can be eliminated, the first and second wireless reception systems are the frequency control unit, the modulation scheme control unit, and the occupied band control Control means for returning from the FDD twin path configuration to the original hot standby configuration, or when receiving notification of wireless transmission quality degradation cancellation of the received signal by the adjacent channel interference wave from the opposing wireless device, Configuration restoration means for controlling the frequency control means, the transmission modulation scheme control means, and the transmission occupancy band control means to return the first and second wireless transmission systems from the FDD twin path configuration to the original hot standby configuration The wireless device according to appendix 9, further comprising:

(Supplementary Note 11)
The configuration recovery means is configured to recover the original hot state from the FDD twin path configuration when the wireless transmission quality degradation cancellation state of the received signal due to the adjacent channel interference wave continues for a predetermined time as a recovery monitoring time. The wireless device according to claim 10, wherein an operation of returning to a standby configuration is performed.

(Supplementary Note 12)
When changing the configuration from the hot standby configuration to the FDD twin path configuration by the configuration changing means, or when returning from the FDD twin path configuration to the original hot standby configuration by the configuration restoring means, the first wireless radio The apparatus according to any one of appendices 9 to 11, further comprising an inter-station synchronization judgment means for synchronizing operation at the time of configuration change between the device and the second wireless device or at the time of configuration return. The wireless device according to any one.

(Supplementary Note 13)
A wireless communication method by a wireless device of a wireless communication system for performing point-to-point wireless communication between two opposing wireless devices, comprising:
The wireless device includes a first wireless transmission system including a first transmitter and a first modulator, a first wireless reception system including a first receiver and a first demodulator, a second transmitter and a second A first radio transmission system including a second radio transmission system including a modulator, and a second radio reception system including a second receiver and a second demodulator; Performs a wireless transmission operation to a wireless device on the other party side using a specific wireless frequency assigned in advance as an operating frequency with any one of the wireless transmission systems in the transmission system being active, and the other wireless transmission system as a backup system In the wireless communication method of the wireless device capable of the hot standby configuration for stopping and waiting for the wireless transmission operation as
The operating frequency of the first transmitter is divided into upper and lower radio frequency bands in the hot standby configuration, and the operating frequency of the second transmitter is in the hot standby configuration. The upper radio frequency when dividing the radio frequency band up and down, or the lower radio frequency when dividing the radio frequency band in the hot standby configuration up and down, into the upper radio frequency when dividing the radio frequency band up and down, And a frequency control step of changing the frequency from the radio frequency in the hot standby configuration to the upper radio frequency when the operating frequency of the second receiver is divided into upper and lower bands of the radio frequency in the hot standby configuration.
The N (N: natural number) of the modulation scheme 2 ^N of each of the first modulator and the second modulator, or the first demodulator and the second demodulator, is at least doubled in the hot standby configuration Modulation scheme control step to be changed;
An occupied band control step of changing an occupied band of each of the first modulator and the second modulator or the first demodulator and the second demodulator to a half occupied band in the hot standby configuration;
It is detected whether or not the wireless transmission quality of the received signal of the own wireless channel is degraded, and the cause of the degraded transmission quality is due to the adjacent channel interference wave to the radio frequency band occupied as the radio frequency used by the own radio device. When it is determined that the first and second radio receiving systems detect the deterioration, the frequency control step, the modulation method control step, and the occupied band control step are used to determine the first and second radio receiving systems from the hot standby configuration. The configuration is changed to an FDD twin path configuration that receives the same data using two radio frequencies of the side radio frequency and the upper side radio frequency, or the reception signal by the adjacent channel interference wave from the opposite side radio apparatus facing the radio When the radio transmission quality deterioration notification is received, the frequency control step for the first and second radio transmission systems is performed. In the FDD twin-path configuration in which the same data is transmitted from the hot standby configuration using the two lower radio frequencies and the upper one from the hot standby configuration using the modulation scheme control step and the occupied band control step Configuration change step for changing configuration;
A wireless communication method comprising:

(Supplementary Note 14)
In the frequency control step, an operating frequency which is a center frequency of a radio frequency band used by the first transmitter and the second transmitter, or the first receiver and the second receiver is separately set. And returning the respective operating frequency from the lower and upper radio frequencies to the original radio frequency in the hot standby configuration, respectively.
At the time of the hot standby configuration, the modulation scheme control step halves ^N of the modulation scheme 2 ^N of each of the first modulator and the second modulator, or the first demodulator and the second demodulator. Further comprising the step of restoring the original modulation scheme of
In the occupied band control step, radio occupied bands of the first modulator and the second modulator, or the first demodulator and the second demodulator are doubled, and the original in the hot standby configuration is generated. Further comprising the step of returning to the occupied bandwidth of
When it is determined that the wireless transmission quality deterioration of the received signal due to the adjacent channel interference wave can be eliminated, the first and second wireless reception systems are controlled in the frequency control step, the modulation scheme control step, the occupied band control Using the step to return from the FDD twin path configuration to the original hot standby configuration, or when a notification of wireless transmission quality degradation cancellation of the received signal due to the adjacent channel interference wave is received from the opposing wireless device; And a configuration recovery step for controlling the second wireless transmission system from the FDD twin path configuration to the original hot standby configuration by controlling the frequency control step, the transmission modulation scheme control step, and the transmission occupancy band control step. The wireless communication method according to appendix 13, further comprising:

(Supplementary Note 15)
In the configuration recovery step, when the wireless transmission quality degradation cancellation state of the received signal due to the adjacent channel interference wave continues for a predetermined time as recovery monitoring time, the original hot from the FDD twin path configuration The wireless communication method according to claim 14, characterized in that an operation of returning to a standby configuration is performed.

(Supplementary Note 16)
When changing the configuration from the hot standby configuration to the FDD twin path configuration according to the configuration change step, or when returning from the FDD twin path configuration to the original hot standby configuration by the configuration recovery means, the first radio facing The inter-station synchronization determination step is further included for performing synchronization between operation at the time of configuration change between the device and the second wireless device or operation at the time of configuration recovery. The wireless communication method according to any one.

(Supplementary Note 17)
A wireless communication program which implements the wireless communication method according to any one of appendices 13 to 16 as a computer-executable program.

  The present invention is applied to a wireless communication system, a wireless device, a wireless communication method, and a wireless communication program in which deterioration of wireless transmission quality due to the influence of interference waves of adjacent channels is a problem.

101 Wireless Device (First Wireless Device)
102-1 first transmitter 102-2 second transmitter 103-1 first receiver 103-2 second receiver 104-1 first modulator 104-2 second modulator 105-1 first demodulator 105 -1 (b) Demodulated data 105-2 of the radio frequency band A Second demodulator 105-2 (b) Demodulated data 106 of the radio frequency band B Adjacent interference wave detection unit 107 Radio signal control unit 108 Interface unit 109 Antenna unit 110 Radio signal synthesizer 111 Transmission data synthesizer 111 (j) Synthesizer output data of demodulated data of radio frequency bands A and B 201 Radio apparatus (second radio apparatus)
202-1 first transmitter 202-2 second transmitter 203-1 first receiver 203-2 second receiver 204-1 first modulator 204-2 second modulator 205-1 first demodulator 205 -2 Second demodulator 206 Adjacent interference wave detection unit 207 Radio signal control unit 208 Interface unit 209 Antenna unit 210 Radio signal synthesizer 211 Transmission data synthesizer 301 Line quality monitoring unit 303 Inter-station synchronization judgment unit 304 Determination unit 307 Setting Unit 308 Signal control unit 309-T Transmission frequency control unit 309-R Reception frequency conversion unit 310-T Transmission occupancy band control unit 310-R Reception occupancy band control unit 311-T Transmission modulation scheme control unit 311-R Reception modulation scheme control Unit 401-1 Lower Adjacent Channel Receiver 401-2 Upper Adjacent Channel Receiver 402-1 Lower Received Level Detector 402-2 Upper Received Bell detector a Reception signal b Demodulation signal c Reception data d Transmission data e Interface signal f Modulation data g Adjacent channel wireless communication signal h Radio communication signal reception level j Transmission data k Frequency setting signal m Reception information n Demodulation control signal p Adjacent wave Reception level q Modulation control signal r Adjacent channel received signal s Adjacent channel information A Line quality signal B Line deterioration signal F Opposite station change request signal G Response signal K Setting information M Wireless control signal N Frequency signal Q Occupied band signal R Modulation scheme signal T Frequency setting signal U Occupied band setting signal W Modulation method setting signal

Claims (10)

A wireless communication system for performing point-to-point wireless communication between an opposing first wireless device and a second wireless device, comprising:
Each of the first wireless device and the second wireless device is
A first wireless transmission system including a first transmitter capable of individually setting an operating frequency which is a center frequency of a wireless frequency band, and a first modulator capable of individually setting a modulation scheme and a wireless occupation band.
A second radio transmission system including a second transmitter capable of individually setting an operating frequency which is a center frequency of the radio frequency band, and a second modulator capable of individually setting a modulation scheme and a radio occupied band;
A first radio receiving system including a first receiver capable of individually setting an operating frequency which is a center frequency of a radio frequency band, and a first demodulator capable of individually setting a modulation scheme and a radio occupied band;
A second radio reception system including: a second receiver capable of individually setting an operating frequency which is a center frequency of a radio frequency band; and a second demodulator capable of individually setting a modulation scheme and a radio occupied band (1 + 1) redundant configuration,
Each of the first radio apparatus and the second radio apparatus uses a radio transmission system of one of the first and second radio transmission systems as a working radio frequency, and uses a predetermined radio frequency assigned in advance as an operating frequency. In a wireless communication system capable of a hot standby configuration in which a transmission operation to a wireless device on the other party side is performed, and the other wireless transmission system is used as a standby system to stop the wireless output and stand by,
Each of the first wireless device and the second wireless device is
Channel quality monitoring means for detecting whether the wireless transmission quality of the received signal of the own wireless channel has deteriorated;
Adjacent interference wave detection means for detecting whether the cause of the deterioration of the transmission quality of the received signal is due to an adjacent channel interference wave to a radio frequency band occupied as the radio frequency used by the own radio device;
The operating frequency of the first transmitter is divided into upper and lower radio frequency bands in the hot standby configuration, and the operating frequency of the second transmitter is in the hot standby configuration. The upper radio frequency when dividing the radio frequency band up and down, or the lower radio frequency when dividing the radio frequency band in the hot standby configuration up and down, into the upper radio frequency when dividing the radio frequency band up and down, And frequency control means for changing the frequency from the radio frequency in the hot standby configuration to an upper radio frequency when the operating frequency of the second receiver is divided into upper and lower bands of the radio frequency in the hot standby configuration;
The N (N: natural number) of the modulation scheme 2 ^N of each of the first modulator and the second modulator, or the first demodulator and the second demodulator, is at least doubled in the hot standby configuration Modulation scheme control means to be changed;
Occupied band control means for changing the occupied band of each of the first modulator and the second modulator or the first demodulator and the second demodulator to a half occupied band in the hot standby configuration;
Transmission data combining means for selecting a received signal with better quality from the received signals received by each of the first receiver and the second receiver and combining them as received data;
When it is determined that the wireless transmission quality of the received signal is degraded due to the adjacent channel interference wave, the frequency control unit, the modulation scheme control unit, and the occupation for the first and second wireless reception systems in which the degradation is detected The band control means is controlled to change the configuration from the hot standby configuration to an FDD twin path configuration in which the same data is received using two radio frequencies, the lower radio frequency and the upper radio frequency. The frequency control means, the modulation method control means, and the modulation method control means for the first and second radio transmission systems when receiving a deterioration notification of the radio transmission quality of the received signal due to the adjacent channel interference wave from the radio apparatus on the opposite side. Controlling the occupied band control means to control the lower radio frequency and the upper radio frequency from the hot standby configuration; The configuration changing means for equipment configuration changes to FDD Tsuinpasu configured for transmitting the same data using One radio frequency,
A wireless communication system comprising: The frequency control means individually sets an operating frequency which is a central frequency of a radio frequency band used by the first transmitter and the second transmitter, or the first receiver and the second receiver. The function of returning each operating frequency from the lower radio frequency and the upper radio frequency to the original radio frequency in the hot standby configuration;
In the hot standby configuration, the modulation scheme control means halves ^N of the modulation scheme 2 ^N of each of the first modulator and the second modulator, or the first demodulator and the second demodulator. With the ability to revert to the original modulation scheme of
The occupied band control means doubles radio occupied bands of the first modulator and the second modulator, or the first demodulator and the second demodulator, respectively, to obtain the original in the hot standby configuration. As well as the function of returning to the occupied bandwidth of
When it is determined that the wireless transmission quality deterioration of the received signal due to the adjacent channel interference wave can be eliminated, the first and second wireless reception systems are the frequency control unit, the modulation scheme control unit, and the occupied band. When control means is controlled to return from the FDD twin path configuration to the original hot standby configuration or when notification of wireless transmission quality degradation cancellation of the received signal due to the adjacent channel interference wave is received from the opposing wireless device, Configuration return means for controlling the frequency control means, the modulation scheme control means, and the occupied band control means to return the first and second wireless transmission systems from the FDD twin path configuration to the original hot standby configuration; The wireless communication system according to claim 1, further comprising:   The configuration recovery means is configured to recover the original hot state from the FDD twin path configuration when the wireless transmission quality degradation cancellation state of the received signal due to the adjacent channel interference wave continues for a predetermined time as a recovery monitoring time. The wireless communication system according to claim 2, wherein an operation of returning to a standby configuration is performed. When changing the configuration from the hot standby configuration to the FDD twin path configuration by the configuration changing means, or when returning from the FDD twin path configuration to the original hot standby configuration by the configuration restoring means, the first wireless radio 4. The apparatus according to claim 1, further comprising synchronization judging means between the opposite stations for synchronizing operation at the time of configuration change between the device and the second wireless device or at the time of configuration return. The wireless communication system according to any one of the above. A wireless communication method by a wireless communication system for performing point-to-point wireless communication between a facing first wireless device and a second wireless device,
Each of the first wireless device and the second wireless device includes a first wireless transmission system including a first transmitter and a first modulator, and a first wireless reception including a first receiver and a first demodulator. A (1 + 1) redundancy configuration comprising a system, a second radio transmission system comprising a second transmitter and a second modulator, and a second radio reception system comprising a second receiver and a second demodulator Applied to a wireless communication system, using any one of the first and second wireless transmission systems as a working radio frequency and using a specific radio frequency assigned in advance as an operating frequency In the wireless communication method capable of the hot standby configuration, the wireless transmission operation of the second embodiment is performed and the other wireless transmission system is used as a backup system to stop the wireless transmission operation and to stand by
The first wireless device is
A line quality monitoring step of detecting whether the radio transmission quality of the received signal of the own radio line has deteriorated;
An adjacent interference wave detection step of detecting whether the cause of the deterioration of the radio transmission quality of the received signal is due to an adjacent channel interference wave to a radio reception frequency band occupied as the radio frequency used by the own radio device;
In the lower standby frequency when the operating frequency of the first receiver is divided into upper and lower bands of the wireless frequency in the hot standby configuration, the operating frequency of the second receiver is in the hot standby configuration. A reception frequency control step of changing the frequency from the radio frequency in the hot standby configuration to the upper radio frequency when the frequency band is divided into upper and lower parts;
A receiving modulation scheme control step of changing N (N: natural number) of the modulation scheme 2 ^N of each of the first demodulator and the second demodulator to at least double in the hot standby configuration;
A reception occupied band control step of changing an occupied band of each of the first demodulator and the second demodulator to a half occupied band in the hot standby configuration;
A transmission data combining step of selecting a reception signal with better radio transmission quality from the reception signals received by the first receiver and the second receiver and combining them as reception data;
When it is determined that the wireless transmission quality of the received signal is deteriorated due to the adjacent channel interference wave, the first and second reception frequency control steps, the reception modulation scheme control step, and the reception exclusive band control step are used to determine There is a receiving configuration changing step of changing the configuration of the second receiving system from the hot standby configuration to an FDD twin-path configuration in which the same data is received using the two lower radio frequencies and the lower radio frequency. And
The second wireless device is
The operating frequency of the second transmitter is divided into upper and lower radio frequencies when the operating frequency of the first transmitter is divided into upper and lower bands of the radio frequency in the hot standby configuration. A transmission frequency control step of changing the frequency from the radio frequency in the hot standby configuration to an upper radio frequency when the frequency band is divided into upper and lower parts;
A transmission modulation scheme control step of changing N (N: natural number) of the modulation scheme 2 ^N of each of the first modulator and the second modulator by at least twice in the hot standby configuration;
A transmission occupied band control step of changing an occupied band of each of the first modulator and the second modulator to a half occupied band in the hot standby configuration;
The transmission frequency control step, the transmission modulation scheme control step, and the transmission occupancy band control step are used when the radio transmission quality deterioration notification of the reception signal is received from the first radio apparatus by the adjacent channel interference wave. Transmission configuration for changing the configuration of the first and second transmission systems from the hot standby configuration to an FDD twin-path configuration in which the same data is transmitted using the two lower radio frequencies and the lower radio frequency and the upper radio frequency Change step,
A wireless communication method comprising: The receiving frequency control step returns the operating frequency of each of the first receiver and the second receiver from the lower radio frequency and the upper radio frequency to the original radio frequency in the hot standby configuration. In addition,
The transmission frequency control step returns the operating frequency of each of the first transmitter and the second transmitter from the lower radio frequency and the upper radio frequency to the original radio frequency in the hot standby configuration. In addition,
The reception modulation scheme control step further includes the step of halving N of the modulation scheme 2N of each of the first demodulator and the second demodulator to return to the original modulation scheme in the hot standby configuration,
The transmission modulation scheme control step further includes the step of halving N of the modulation scheme 2N of each of the first modulator and the second modulator to return to the original modulation scheme in the hot standby configuration,
The reception exclusive band control step further includes the step of doubling the respective exclusive bands of the first demodulator and the second demodulator to restore the original exclusive bands in the hot standby configuration,
The transmission occupied band control step further includes the step of doubling the occupied bands of each of the first modulator and the second modulator and returning them to the original occupied band in the hot standby configuration,
When it is determined that the wireless transmission quality deterioration of the received signal due to the adjacent channel interference wave can be eliminated, the first wireless device performs the reception frequency control step, the reception modulation scheme control step, the reception exclusive band control Further comprising a receive configuration recovery step for returning from the FDD twin path configuration to the original hot standby configuration using the steps;
The transmission frequency control step, the transmission modulation scheme control step, the transmission exclusive band control step, when the second wireless device receives a notification of quality degradation cancellation of the received signal by the adjacent channel interference wave from the first wireless device. The wireless communication method according to claim 5, further comprising a transmission configuration recovery step for returning from the FDD twin path configuration to the original hot standby configuration using the steps.   The FDD twin path when the reception configuration recovery step and the transmission configuration recovery step continue the wireless transmission quality degradation cancellation state of the received signal due to the adjacent channel interference wave for a predetermined time as recovery monitoring time. 7. The wireless communication method according to claim 6, wherein an operation of returning from the configuration to the original hot standby configuration is performed. When changing the configuration from the hot standby configuration to the FDD twin path configuration in the reception configuration changing step and the transmission configuration changing step, or the original hot standby from the FDD twin path configuration in the reception configuration returning step and the transmission configuration returning step When returning to the configuration, the opposite station for synchronizing the configuration change sequence of the operation at the time of configuration change or the operation at the time of configuration return between the two wireless devices facing each other and the first wireless device facing wirelessly The wireless communication method according to any one of claims 5 to 7, further comprising an inter-synchronization determination step. A wireless device of a wireless communication system for performing point-to-point wireless communication between two opposing wireless devices, comprising:
A first wireless transmission system including a first transmitter capable of individually setting an operating frequency which is a center frequency of a wireless frequency band, and a first modulator capable of individually setting a modulation scheme and a wireless occupation band.
A second radio transmission system including a second transmitter capable of individually setting an operating frequency which is a center frequency of the radio frequency band, and a second modulator capable of individually setting a modulation scheme and a radio occupied band;
A first radio receiving system including a first receiver capable of individually setting an operating frequency which is a center frequency of a radio frequency band, and a first demodulator capable of individually setting a modulation scheme and a radio occupied band;
A second radio reception system including: a second receiver capable of individually setting an operating frequency which is a center frequency of a radio frequency band; and a second demodulator capable of individually setting a modulation scheme and a radio occupied band (1 + 1) redundant configuration,
Using one of the first and second wireless transmission systems as a working wireless transmission system and using a specific wireless frequency assigned in advance as an operating frequency In the wireless apparatus capable of the hot standby configuration, the standby mode is performed by setting the other wireless transmission system as a standby system and stopping the wireless output.
Channel quality monitoring means for detecting whether the wireless transmission quality of the received signal of the own wireless channel has deteriorated;
Adjacent interference wave detection means for detecting whether the cause of the deterioration of the transmission quality of the received signal is due to an adjacent channel interference wave to a radio frequency band occupied as the radio frequency used by the own radio device;
The operating frequency of the first transmitter is divided into upper and lower radio frequency bands in the hot standby configuration, and the operating frequency of the second transmitter is in the hot standby configuration. The upper radio frequency when dividing the radio frequency band up and down, or the lower radio frequency when dividing the radio frequency band in the hot standby configuration up and down, into the upper radio frequency when dividing the radio frequency band up and down, And frequency control means for changing the frequency from the radio frequency in the hot standby configuration to an upper radio frequency when the operating frequency of the second receiver is divided into upper and lower bands of the radio frequency in the hot standby configuration;
The N (N: natural number) of the modulation scheme 2 ^N of each of the first modulator and the second modulator, or the first demodulator and the second demodulator, is at least doubled in the hot standby configuration Modulation scheme control means to be changed;
Occupied band control means for changing the occupied band of each of the first modulator and the second modulator or the first demodulator and the second demodulator to a half occupied band in the hot standby configuration;
Transmission data combining means for selecting a received signal with better quality from the received signals received by each of the first receiver and the second receiver and combining them as received data;
When it is determined that the wireless transmission quality of the received signal is degraded due to the adjacent channel interference wave, the frequency control unit, the modulation scheme control unit, and the occupation for the first and second wireless reception systems in which the degradation is detected The band control means is controlled to change the configuration from the hot standby configuration to an FDD twin path configuration in which the same data is received using two radio frequencies, the lower radio frequency and the upper radio frequency. The frequency control means, the modulation method control means, and the modulation method control means for the first and second radio transmission systems when receiving a deterioration notification of the radio transmission quality of the received signal due to the adjacent channel interference wave from the radio apparatus on the opposite side. Controlling the occupied band control means to control the lower radio frequency and the upper radio frequency from the hot standby configuration; The configuration changing means for configuration changes to the FDD Tsuinpasu configured for transmitting the same data using One radio frequency,
A wireless device comprising: A wireless communication method by a wireless device of a wireless communication system for performing point-to-point wireless communication between two opposing wireless devices, comprising:
The wireless device includes a first wireless transmission system including a first transmitter and a first modulator, a first wireless reception system including a first receiver and a first demodulator, a second transmitter and a second A first radio transmission system including a second radio transmission system including a modulator, and a second radio reception system including a second receiver and a second demodulator; Performs a wireless transmission operation to a wireless device on the other party side using a specific wireless frequency assigned in advance as an operating frequency with any one of the wireless transmission systems in the transmission system being active, and the other wireless transmission system as a backup system In the wireless communication method of the wireless device capable of the hot standby configuration for stopping and waiting for the wireless transmission operation as
The operating frequency of the first transmitter is divided into upper and lower radio frequency bands in the hot standby configuration, and the operating frequency of the second transmitter is in the hot standby configuration. The upper radio frequency when dividing the radio frequency band up and down, or the lower radio frequency when dividing the radio frequency band in the hot standby configuration up and down, into the upper radio frequency when dividing the radio frequency band up and down, And a frequency control step of changing the frequency from the radio frequency in the hot standby configuration to the upper radio frequency when the operating frequency of the second receiver is divided into upper and lower bands of the radio frequency in the hot standby configuration.
The N (N: natural number) of the modulation scheme 2 ^N of each of the first modulator and the second modulator, or the first demodulator and the second demodulator, is at least doubled in the hot standby configuration Modulation scheme control step to be changed;
An occupied band control step of changing an occupied band of each of the first modulator and the second modulator or the first demodulator and the second demodulator to a half occupied band in the hot standby configuration;
It is detected whether or not the wireless transmission quality of the received signal of the own wireless channel is degraded, and the cause of the degraded transmission quality is due to the adjacent channel interference wave to the radio frequency band occupied as the radio frequency used by the own radio device. When it is determined that the first and second radio receiving systems detect the deterioration, the frequency control step, the modulation method control step, and the occupied band control step are used to determine the first and second radio receiving systems from the hot standby configuration. The configuration is changed to an FDD twin path configuration that receives the same data using two radio frequencies of the side radio frequency and the upper side radio frequency, or the reception signal by the adjacent channel interference wave from the opposite side radio apparatus facing the radio When the radio transmission quality deterioration notification is received, the frequency control step for the first and second radio transmission systems is performed. In the FDD twin-path configuration in which the same data is transmitted from the hot standby configuration using the two lower radio frequencies and the upper one from the hot standby configuration using the modulation scheme control step and the occupied band control step Configuration change step for changing configuration;
A wireless communication method comprising: