JP3376186B2 - Wireless communication system, wireless base station, and control method thereof - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication device system.
Temu, related to the communication control apparatus and a control method thereof.

[0002]

2. Description of the Related Art Conventionally, in a wireless telephone system of a multi-channel access system having two or more control channels such as a low power cordless telephone, one control channel is fixedly used or communication is performed. In order to cope with the above traffic, the control channel used is switched by setting operation for both the wireless terminal and the wireless base station.

[0003]

However, in the above-mentioned conventional example, when one control channel is fixedly used when the radio service zones formed by a plurality of radio base stations overlap each other, the control channel is There is a problem that the possibility of collision of the control signals of 1 is increased. Further, when the method of setting and switching the use control channel for both the wireless terminal and the wireless base station is adopted, it is effective in reducing the collision of control signals, but there is a problem that complicated setting operation is required. there were.

Then, as a method for solving this problem,
The applicant of the present application has applied for a wireless telephone system in which the control channel to be used is automatically switched at the time of initialization in accordance with the physical information of the communication control device to which the wireless base station is connected (Japanese Patent Application No. No. 312735).

However, in the above-mentioned application, since the control channel to be automatically used is determined in correspondence with the physical information, the complexity is eliminated, but on the other hand, an electronic device or the like which radiates radio waves in the same frequency band is nearby. When there is a control channel that cannot be used for some reason, such as the case, there is a problem that the wireless terminal that uses that channel becomes unavailable.

Further, when the communication control device transmits physical information to the radio base station to determine the control channel to be used in the radio base station, but it is desired to change the control channel during operation for some reason. Need to transmit information different from the physical information at the time of initialization, and it is necessary to prepare two pieces of information in advance.

[0007]

SUMMARY OF THE INVENTION The present invention manages a control channel used for connecting a radio base station and a radio communication terminal.
And changes can be easily implemented without any special steps.
The purpose is to reveal.

[0008]

SUMMARY OF THE INVENTION The present invention provides a plurality of control chips.
Connected to a wireless communication terminal by a wireless line with a channel
Multiple wireless base stations, and the above wireless base stations via a wired communication path.
Wireless communication system having communication control device for connecting ground stations
In the above system, the wireless base station is connected to the wireless communication terminal.
Storage means for storing in advance the control channel used for connection
And connection from the communication control device to the wireless communication terminal
Receivers to receive notifications of new control channels used for
, When sending an incoming call notification signal to the wireless communication terminal,
When the call notification signal is received from the wireless communication terminal,
The radio frequency is controlled by the control channel stored in the storage means.
Once the line is established, the control stored in the storage means
The channel is set to the new control received by the receiving means.
Radio having channel changing means for changing to control channel
It is a communication system.

Further, the present invention provides communication via a wired communication path.
A radio circuit that is connected to a control device and has multiple control channels.
In the wireless base station connected to the wireless communication terminal by the line
The control channel used to connect to the wireless communication terminal
Is stored in advance from the storage means and the communication control device.
New control channel used to connect to wireless communication terminals
Of the notification to the wireless communication terminal.
Message notification signal transmission, or transmission from the above wireless communication terminal
The control stored in the storage means when the notification signal is received
If a wireless line can be established by the channel,
The control channel stored in the stage by the receiving means.
Channel to change to a new control channel received by
And a wireless base station having a changing unit.

Furthermore, the present invention provides a wired communication path,
Connected to the communication control unit and having multiple control channels
Of the wireless base station connected to the wireless communication terminal by the line circuit
In the control method, it is used to connect to the above wireless communication terminal.
Storing the control channel in advance, and the communication control device
The new control system used to connect to the above wireless communication terminals.
Receiving the notification of the control channel, and the wireless communication terminal
When sending an incoming call notification signal to or from the above wireless communication terminal
When the outgoing notification signal of
If the wireless channel can be established by the control channel
The control channel stored in the storage means is received by the above.
And a step of changing to a new control channel
It is a control method of a base station.

[0011]

[0012]

[0013]

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing the system configuration of a wireless telephone system using a low power cordless telephone according to an embodiment of the present invention.

In FIG. 1, the system of the present embodiment comprises a communication control device 100 and radio base stations (BS) 110 to 11.
5 and wireless telephone terminals (PKT) 120 to 125. The radio base station 110 and the radio telephone terminal 120, the radio base station 111 and the radio telephone terminal 12, respectively.
The combination is 1, ...
Reference numeral 130 denotes Pch (first control channel), and 131
Represents Cch (second control channel).

FIG. 2 is a block diagram showing the configuration of a radio base station and a radio telephone terminal which constitute the system of this embodiment.

In FIG. 2, 201 to 204 are constituent elements of the radio base station, and 205 to 208 are constituent elements of the radio telephone terminal.

The wireless base station includes a wired line communication interface unit 201 for performing wired communication with the communication control device 100, a control unit 202 for overall control of the wireless base station, wireless identification information and An EEPROM 203 for storing non-volatile data such as use control channel information,
A wireless unit 204 for performing wireless communication with a wireless telephone terminal.

Further, the radiotelephone terminal includes a radio unit 205 for performing radio communication with a radio base station, an audio unit 206 for processing a voice signal for a call,
A control unit 207 that performs overall control of the wireless telephone terminal
And an EEPROM 208 for storing non-volatile data such as wireless identification information and use control channel information.

Next, the operation of the system having the above configuration will be described.

FIG. 3 is an explanatory view showing an initialization sequence in which the use control channel needs to be changed, and FIG. 4 is an explanatory view showing an initialization sequence in which the use control channel does not need to be changed in this embodiment. is there.

FIG. 5 is a flow chart showing the operation at the time of initialization of the communication control device, FIG. 6 is a flow chart showing the control channel setting operation at the time of initialization of the radio base station, and FIG. 7 is a flowchart showing a control channel setting operation at the time of initialization of the wireless telephone terminal.

First, switching of the use control channel will be described based on the sequence chart at the time of initialization of the radio base station requiring the change of the use control channel in FIG.

(1) The communication control device 100 initializes internal storage devices and internal circuits after initial startup (power-on, etc.) (S501) and waits for a reset request message from the terminal ( S502).

(2) The radio base station 11x (x indicates any one of 0 to 5) is initialized (power supply is started) and then reset request message 30 is sent to the communication control unit 100.
0 is sent to notify the connection of the terminal.

(3) Wireless telephone terminal 12x (x is 0 to 5)
After initialization (power-on, etc.), the setting control channel information previously written in the EEPROM 208 is read by a known means, and the control channel is monitored by the setting channel (S701). Wait for reception of the data notification signal (S702).

(4) When the communication control device 100 receives the reset request message 300, the reset message 3 is sent to the transmission source radio base station 11x of the reset request message.
01 is transmitted to request terminal initialization (S503), and the terminal class notification is waited for (S504).

(5) Upon receiving the reset message 301, the radio base station 11x performs internal initialization and transmits a terminal class notification message 302 to notify the communication control device 100 that it is a radio base station. To do.

(6) When the communication control device 100 receives the terminal class notification message 302 (S504), it confirms that the type of the connected terminal is the wireless base station, and the physical information of the source wireless base station is transmitted. According to (the terminal number of the communication control device 100 in this embodiment), the control channel to be used is determined to be Pch 130 if the terminal number is odd, and to Cch 131 if it is even (S505), and the terminal class notification message 302 The control channel notification message 303 is transmitted to the transmission source wireless base station 11x of (S50
6) The control channel used between the radio base station 11x and the radio telephone terminal 12x is notified.

(7) Upon receipt of the control ch notification message 303, the radio base station 11x uses known means to
The control channel information previously written in the EEPROM is read (S601) and compared with the control channel specified by the control channel notification message 303 received earlier (S601).
602), if the use control channel needs to be changed, E
Control using the control channel read from EPROM c
The h change notification signal 304 is transmitted to the wireless telephone terminal 12x (S603), and the control channel change response signal 305 is waited for from the wireless telephone terminal 12x (S604).

(8) In the radio telephone terminal 12x, the EEPR
The control channel read from the OM is monitored, and the initial data notification signal 310 is waited for (S702). When not received, the control channel change notification signal 304 is waited for (S703), and the control channel change notification signal 304 is received. Then, the necessity of changing the control channel and the channel to switch to are recognized (S704), and the control channel change response signal 305
Is transmitted to the wireless base station 11x (S705), the control channel is switched to the notified channel (S706), and the control channel change confirmation notification signal 306 is received from the wireless base station 11x (S707).

(9) The radio base station 11x receives the control channel change response signal 305 (S604), the radio telephone terminal 12x recognizes that the control channel switching is completed, and switches to the notified control channel ( S605),
The control channel change confirmation notification signal 306 is transmitted (S30
6), wait for reception of the control channel change confirmation response signal 307 from the wireless telephone terminal 12x (S607).

(10) In the radio telephone terminal 12x, the control channel change confirmation notification signal 30 is sent on the control channel after switching.
6 is received (S707), the control channel change in the wireless base station 11x is confirmed, and the changed control channel information is E
The data is written in the EPROM 208 (S708), and the control channel change confirmation response signal 307 is transmitted to the radio base station 11x (S).
709) and the process returns to S702.

(11) The radio base station 11x receives the control channel change confirmation response signal 307 on the changed control channel (S607), and recognizes that the control channel switching at the radio telephone terminal 12x is completed. , Write the changed control channel information to the EEPROM 203 (S60
8) The control channel setting completion notification message 308 is transmitted to the communication control device 100 (S609), and the reception of the initial data notification message 309 from the communication control device 100 is waited for (S610).

(12) The communication control device 100 controls the control ch
When the setting completion notification message 308 is received (S50
7) Recognizing that the initial startup of the wireless telephone terminal 12x has been completed, the wireless base station 11x transmits an initial data notification message 309 for notifying data required when the terminal is activated (S508), and initialization is performed. finish.

(13) Upon receiving the initial data notification message 309 (S610), the radio base station 11x initializes the data inside the radio base station 11x and sends the initial data notification signal 310 to the radio telephone terminal 12x. The data is transmitted (S611), and the initialization is completed.

(14) When the radio telephone terminal 12x receives the initial data notification signal 310 (S702), the data inside the radio telephone terminal 12x is initialized, and the initialization with the communication control device 100 is normally performed. Recognize that it is finished and finish the initialization.

Next, a radio base station initialization sequence which does not require a change of the use control channel will be described with reference to FIG.

Descriptions of (1) to (6) are omitted because they are common to the sequence requiring the change of the use control channel.

(7) Upon receipt of the control ch notification message 303, the radio base station 11x uses known means to
The control channel information previously written in the EEPROM is read (S601) and compared with the control channel specified by the control channel notification message 303 received earlier (S601).
602), if there is no need to change the use control channel, S
609, and control channel to the communication control device 100
The setting completion notification message 308 is transmitted (S609),
It waits for the reception of the initial data notification message from the communication control device 100 (S610).

(8) The communication control device 100 receives the control channel setting completion notification message 308 (S50).
7) Recognizing that the initial startup of the wireless telephone terminal 12x has been completed, the wireless base station 11x transmits an initial data notification message 309 for notifying data required when the terminal is activated (S508), and initialization is performed. finish.

(9) Upon receiving the initial data notification message 309 (S610), the radio base station 11x initializes the data inside the radio base station 11x and sends the initial data notification signal 310 to the radio telephone terminal 12x. The data is transmitted (S611), and the initialization is completed.

(10) When the radiotelephone terminal 12x receives the initial data notification signal 310 (S702), it initializes the data inside the radiotelephone terminal 12x and normally initializes it with the communication control device 100. Recognize that it has finished and complete the initialization.

In this way, at the time of initialization processing of the radio base station, the control channel to be used can be automatically switched in correspondence with the physical information (terminal number in this embodiment) of the connected communication control device. It will be possible.

The above embodiment describes the configuration corresponding to claim 2. As an embodiment of claim 1, a flow chart showing a control channel setting operation at the time of initialization of the radio base station of FIG. In the above, when the control channel notification message 303 is received from the communication control device 100, the process does not transit to S601 but transits to S605, further skips S606 and S607, and transits to S608.

This is because when the control channel to be used is set in advance in the radio telephone terminal 12x by a known means, or when the radio telephone terminal 12x is powered on after the initialization of the radio base station 11x is completed. Wireless base station 1
This is an embodiment in the case where it is not necessary to transmit the control channel change notification signal 304 from 1x to the wireless telephone terminal 12x.

Further, in the flowchart showing the control channel setting operation at the time of initialization of the radio base station in FIG. 6, it is assumed that the control channel change response signal 305 from the radio telephone terminal 12x is waited for in a predetermined time in S604. When the control channel change response signal 305 is not received, the use control channel received from the communication control device 100 is written in the temporary storage area, and the process proceeds to S609, after which the same steps as those in the above-described embodiment are executed and initialization is performed. After the processing is completed, when the incoming notification signal is transmitted from the wireless base station 11x to the wireless telephone terminal 12x when the incoming call is received by the wireless telephone terminal 12x, or when the outgoing call is made from the wireless telephone terminal 12x, the wireless telephone terminal 12x is transferred to the wireless base station 11x. When the call notification signal is transmitted, when the wireless line can be established, the wireless base station 11x and Made to the embodiments corresponding to claim 3 by a switch the control channel to use telephone terminals 12x together.

In this way, in the radio telephone system, the control channel to be used is decided from the physical information of the connection position when the radio base station and the radio telephone terminal are newly installed, and the decided control channel is notified to the radio base station. As a result, it is possible to automatically switch the control channel, and it is possible to reduce the collision of control signals on the control channel without complicated settings.

Next, a second embodiment of the present invention will be described. FIG. 8 is an explanatory diagram showing a sequence for changing the use control channel when setting the use control channel in the second embodiment.

The means for setting a control channel that can be used in the communication control device is a private branch exchange (PBX).
It is already known that data setting is performed from a terminal device (for example, a personal computer or the like) for data setting or an extension telephone connected to a main unit of a PBX or a key telephone device in a key telephone device or the like. It is obvious that the present invention can be carried out, and detailed description thereof will be omitted here.

Although not described in the above embodiment,
The communication control device 100 uses the terminal class communication message 30.
When 2 is received and the type of the connected terminal is confirmed,
The type of the terminal received corresponding to the terminal number may be written and stored in the RAM inside the communication control device 100.
Since the PBX and the key telephone device are already known, detailed description thereof will be omitted. The types of terminals stored in the RAM are not limited to wireless base stations, but are types of all terminals such as extension-dedicated telephones connected by wire.

The communication control device 100, the radio base station 11x,
When the initialization process is completed in each of the wireless telephone terminals 12x and a control channel that can be used by the communication control device 100 is set during normal operation, the type of the terminal connected to each terminal is changed from the RAM. If the type of the terminal that is read and connected is a wireless base station, the wireless base station 11
The control channel notification message 303 is transmitted to x to notify the control channel used between the wireless base station 11x and the wireless telephone terminal 12x.

Thereafter, the control channel setting completion notification message 30 is sent from the radio base station 11x to the communication control unit 100.
The sequence until 8 is transmitted is the same as that in FIG. 3, and is as described in the above embodiment.

If this operation is performed for all connection terminals of the communication control device 100, the communication control device 1 can be installed once.
It is possible to switch the use control channels of all the radio base stations 11x and the radio telephone terminals 12x accommodated in 00.

As is clear here, the radio base station 11x
The operation of the wireless telephone terminal 12x can be the same as that at the time of initialization, and it is not necessary to prepare a complicated control procedure.

Although the case where the use control channel needs to be changed has been described above, the case where the use control channel does not need to be changed is obviously the same as that shown in FIG. 4, and a detailed description will be given. Omit it.

In the communication control device 100, when an unusable control channel is set, the wireless base station 11x is notified of an available control channel other than the set control channel. When Pch is set as an unusable control channel, if Cch is notified by the control channel notification message 303, it is obvious that the same operation as in the above embodiment can be performed.

Further, when an unusable control channel is set in the communication control device 100, the set control channel is notified to the radio base station 11x, and the radio base station 1 is notified.
1x is notified to the wireless terminal 12x of available control channels other than the notified control channel, and thereafter the wireless base station 1
It is apparent that communication between the 1x and the wireless terminal 12x on a control channel other than the set control channel can be similarly performed.

In this way, when the control channel that can be used in the communication control device is set, the set control channel is notified to the wireless base station, and the notified control channel is sent to the wireless terminal at the wireless base station. After this notification, by communicating with the wireless base station and the wireless terminal on the newly set control channel after this notification, the control channel is automatically assigned when the available control channels are limited. It is possible to easily change the control channel to be used later.

In the above embodiments, radio waves of the low power system are used as the radio line, but radio communication by the weak radio system, PHS, other radio waves, or radio waves other than radio waves such as infrared rays. It is clear that communication and other methods can be similarly performed in various wireless communication systems using multiple control channels, and there is no limitation on the type of wireless line, the method of dividing the channel, or the method of use. Not something.

Although the terminal number of the communication control device is taken as an example of the physical information of the connection position, it may be the installation location of the wireless base station or the moving range of the wireless telephone terminal.

Furthermore, in the initialization sequence of FIGS. 3 and 4, the communication class control device 110 receives the terminal class notification message 302 from the radio base station 11x and transmits the control ch notification message 303. By transmitting information on a preset control channel to the radio base station 11x as a part of the terminal class notification message 302 or separately from the terminal class message 302, the communication control device 110 needs to change the radio base station. 11
The control ch notification message 303 may be transmitted only to x.

Also, all the radio base stations 11x and the radio telephone terminals 1 can be set once for the communication control device 100.
Although it is possible to switch the use control channel of 2x, when the installation location of the wireless base station 11x covers a wide area, the wireless base station 11x and the wireless telephone terminal 12x within a specific area are designated and set, and specified. It is possible to switch the use control channel only within the area of, and further, it is possible to set for each connection position (terminal number in the above example), and the wireless base station 11x and the wireless telephone terminal 12x need to be changed in advance.
The information may be set in the communication control device 100 so that it can be switched only to the set wireless base station 11x and wireless telephone terminal 12x.

The configuration examples of the radio telephone system shown in FIG. 1 and the radio base station and radio telephone terminal shown in FIG. 2 are merely examples, and other configurations may be used.

Further, the sequences shown in FIGS. 3, 4 and 8 are also merely examples.
It goes without saying that a sequence other than this may be performed, and the flowcharts shown in FIGS. 5, 6, and 7 may also perform other operations.

[0066]

According to the present invention, the communication control device can collectively manage the control channel used for connecting the radio base station and the radio communication terminal, and the radio base station can predict the control channel.
To the wireless telephone terminal using the stored control channel
When communication is possible, the wireless base station and wireless
New control of the control channel used for talking terminals
The effect is that the channel can be changed .

[Brief description of drawings]

FIG. 1 is a block diagram showing a wireless telephone system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a radio base station and a radio telephone terminal which constitute the system of the above embodiment.

FIG. 3 is a sequence chart showing a sequence at the time of initialization in which the use control channel needs to be changed in the above embodiment.

FIG. 4 is a sequence chart showing a sequence at the time of initialization in which the use control channel does not need to be changed in the above embodiment.

FIG. 5 is a flowchart showing an operation at the time of initialization of the communication control device in the above embodiment.

FIG. 6 is a flowchart showing an operation at the time of initialization of the wireless base station in the above embodiment.

FIG. 7 is a flowchart showing an operation at the time of initialization of the wireless telephone terminal in the above embodiment.

FIG. 8 is a sequence chart showing a sequence in the case of changing a use control channel based on a setting operation in another embodiment of the present invention.

[Explanation of symbols]

100 ... communication control device, 110-115 ... radio base stations, 120-125 ... Wireless telephone terminal, 201 ... Wired line interface unit, 202, 207 ... Control unit, 203, 208 ... EEPROM, 204, 205 ... wireless unit, 206 ... Audio unit.

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H04B ^7/ 24-7/26 102 H04Q ^7/ 00-7/38

Claims (3)

(57) [Claims] 1. A wireless communication system having a plurality of wireless base stations connected to a wireless communication terminal by a wireless line having a plurality of control channels, and a communication control device connecting the wireless base stations via a wired communication path. In the wireless base station, a storage unit that stores in advance a control channel used to connect to the wireless communication terminal; a notification of a new control channel used to connect to the wireless communication terminal from the communication control device. receiving means for receiving a; when incoming notification signal transmission to the wireless communication terminal, or the
When receiving the outgoing notification signal from the wireless communication terminal,
Channel changing means for changing the control channel stored in the storage means to a new control channel received by the receiving means when a wireless channel can be established by the control channel stored in the storage means. A wireless communication system. 2. A radio base station connected to a communication control device via a wired communication path and connected to a radio communication terminal by a radio line having a plurality of control channels, the control used for connection to the radio communication terminal. storage means and for storing in advance a channel; when incoming notification signal transmission to the wireless communication terminal; from the communication control device, receiving means and for receiving a notification of a new control channel to be used for the connection between the wireless communication terminal , Or above
When receiving the outgoing notification signal from the wireless communication terminal,
Wireless channel is established by the control channel stored in the
And a channel changing unit for changing the control channel stored in the storage unit to the new control channel received by the receiving unit . 3. A method for controlling a wireless base station, which is connected to a communication control device via a wired communication path and is connected to a wireless communication terminal by a wireless line having a plurality of control channels, wherein the connection to the wireless communication terminal is provided. a step of previously storing a control channel used for; from the communication control device, the steps of receiving a notification of a new control channel to be used for the connection between the wireless communication terminal; incoming notification signal to the wireless communication terminal When sending or above
When receiving the outgoing notification signal from the wireless communication terminal,
Wireless channel is established by the control channel stored in the
When it standing, the control channel stored in the storage means, to change to the received new control channel Engineering <br/> more and; control method of a radio base station and having a.