JP3748413B2 - Wireless communication method and wireless communication device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wireless communication apparatus used for a portable terminal or the like in a wireless communication system.
[0002]
[Prior art]
Currently, with the explosive spread of wireless communication systems, a plurality of wireless communication systems with different standards are mixed. In general, a wireless communication device is prepared for each wireless communication system. Recent mobile radio communication devices are required to be compatible with various application services such as e-mail, data communication, and Web (world wide web) browsing as well as conventional voice calls. Therefore, there is an increasing demand for a so-called multimode terminal apparatus that can handle a plurality of wireless communication systems and various application services.
[0003]
As a technique for realizing a multi-mode terminal device, a software defined radio has been proposed. In a software defined radio, a programmable device such as a DSP (digital signal processor) is used to realize at least a part of signal processing necessary for transmission / reception by software processing. In other words, in the software defined radio, a desired function is realized by defining a signal processing function in a resource constituting the signal processing device by a program. Resource management is performed by a resource controller.
[0004]
Therefore, the software defined radio can support various wireless communication systems and various application services by replacing software. For example, it is easy to change the wireless communication system between PDC (mobile phone) and PHS, hand off the wireless communication system from W-CDMA system to cdma2000 system, or switch between voice call and data communication. Therefore, the convenience as a portable terminal is remarkably improved.
[0005]
In such a software defined radio, several forms of obtaining new replacement software are conceivable. One of them is a method of downloading a necessary program via a wireless line. For example, Japanese Patent Laid-Open No. 9-331579 has already proposed a wireless device capable of downloading a program via a wireless line. A wireless communication device having a wireless download function is more than a method of downloading a program by connecting the wireless communication device to a PC or the like by a wired cable or a method of downloading a program by inserting a memory card into the wireless communication device. Since it is not necessary to provide a simple interface, it is possible to reduce the size and cost of the wireless communication device. In addition, it is very flexible because it can be downloaded regardless of time or place.
[0006]
[Problems to be solved by the invention]
In order to provide a multi-function mobile terminal based on software defined radio technology, that is, to accommodate many functions and services, the mobile terminal requires a large amount of resources. The functions that should be possessed by software defined radios tend to swell with the diversification of services, and this requirement becomes even more prominent. Further, as the resource amount increases, the load required for resource management increases. In order to efficiently change or add a part of functions of a terminal, it is desirable that resource management be performed accurately and uniformly.
[0007]
Data including resource definition information (program) for defining a signal processing function in a resource of a signal processing device in a portable terminal based on software defined radio technology is stored in a memory or a storage device mounted as a resource of the portable terminal . Data including resource definition information is an asset purchased by a user of a mobile terminal in most cases. These data are stored in a memory or a storage device mounted on the portable terminal.
[0008]
When a user has a lot of functions implemented on a mobile device, the resource is considered to be constantly tight, and the resources can be efficiently used while repeatedly changing the functions of the mobile device. It may fall into an unusable situation. This is a phenomenon similar to or similar to the phenomenon that occurs in a hard disk in a personal computer, and is caused by inappropriate allocation of resource definitions (resource allocation) to resources, or a data arrangement in resources deviating from an optimal state. Further, in order to efficiently use the resources of the mobile terminal, it is necessary to optimize resource allocation.
[0009]
In order to perform optimization for efficient use of resources, it is desirable to clear the definition of resources and data loaded in the resources. However, as described above, the data including the resource definition information is often an asset purchased by the user of the mobile terminal, and even if the resource shortage occurs, it is useless to discard the existing asset. , Will force the user an extra economic loss. If the user can use a storage device such as a hard disk or memory card, the data can be saved there, but the user of the mobile terminal is outdoors and cannot use the storage device. In some cases, such data saving is difficult.
[0010]
The present invention has been made in view of the above circumstances, and an object of the present invention is to enable data including resource definition information of a signal processing device to be saved without using a storage device in a wireless communication apparatus.
[0011]
Another object of the present invention is to enable accurate and unified resource management in order to reduce the load required for resource management of a wireless communication apparatus.
[0012]
[Means for Solving the Problems]
In order to solve the above problems, according to one aspect of the present invention, a wireless transmission / reception device that transmits / receives a wireless signal and a resource that can redefine a signal processing function are included. In a wireless communication method for performing communication between a wireless communication apparatus having a signal processing device that performs signal processing of a signal processing function and a base station, data including definition information of the signal processing function for the resource is transmitted to the base station The wireless communication apparatus performs a predetermined work including redefinition of the signal processing function for the resource in the retracted state, and after performing the predetermined work, the wireless communication apparatus is evacuated to the base station. Basically, the definition information is transferred to the wireless communication device and restored.
[0013]
More specifically, the wireless communication method acquires from the base station a communication module for a second line via a first line that can be used for communication between the wireless communication device and the base station; Transferring the data including definition information of the signal processing function for the resource to the base station via the second line formed by the wireless transmission / reception device and the acquired communication module, and evacuating the definition The definition information transferred and saved to the base station after a predetermined operation including redefinition of the signal processing function for the resource is performed in the wireless communication apparatus in a state where the information is transferred and saved to the base station Transferring the second line to the wireless communication device for restoration.
[0014]
A wireless communication apparatus according to the present invention includes a wireless transmission / reception device that transmits / receives a wireless signal, and a resource that can redefine a signal processing function, and the signal processing of a predetermined signal processing function required for the transmission / reception by the resource And a controller for controlling the wireless transmission / reception device and the signal processing device, wherein the controller (a) transmits data including definition information of the signal processing function for the resource via the wireless transmission / reception device. (B) after performing the predetermined work including redefinition of the signal processing function for the resource in the state where the data is saved, and (c) The definition information saved in the base station is taken in via the wireless transmission / reception device and restored on the signal processing device.
[0015]
More specifically, the controller includes: (a) a first line that can be used for communication between the wireless communication apparatus and a base station; and a communication module for a second line via the wireless transmission / reception device. (B) transferring the definition information to the base station via the second line formed by the wireless transmission / reception device and the acquired communication module, and evacuating (c) ) Obtain and restore the definition information transferred and saved to the base station via the second line and the wireless transmission / reception device.
[0016]
The controller, when acquiring a communication module for the second line from the base station, if the resource does not have enough space to accommodate the communication module, A part of the definition information may be transferred to the base station and saved via the line. The controller may transfer only data that does not exist in the base station from the definition information to the base station and save it. Further, the controller may perform the processes (a), (b), and (c) in response to a request from the base station.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Referring to FIG. 1, a mobile radio communication apparatus (hereinafter referred to as a portable terminal) 30 according to the present embodiment receives an RF (high frequency) signal from a base station (not shown) via an antenna 1 and transmits the signal to the base station. An RF signal is transmitted. A reception signal from the antenna 1 is converted into a digital reception IF (intermediate frequency) signal by the wireless transmission / reception device 2 and supplied to the signal processing device 3. The digital transmission IF signal generated by the signal processing device 3 is converted into a transmission RF signal by the wireless transmission / reception device 2 and supplied to the antenna 1.
[0018]
The signal processing device 3 includes hardware resources such as an LSI processor, a memory, and a logic circuit, and mainly processes modem units and protocols necessary for transmission and reception. The specifications of the modem unit and protocol are 3 for W-CDMA (Wide band code-division multiple access) system, for example. ^rd Generation Partnership Project (3GGP ^TM 3GGP for GSM (Global system for mobile communications) ^TM Defined in TS 05 series.
[0019]
The processing of the modem unit (also referred to as a baseband unit) is signal processing in an area (baseband area) close to the wireless transmission / reception device 2. More specifically, the processing of the modem unit is performed by demodulating a sampled digitized IF (intermediate frequency) signal output from the wireless transmission / reception device 2 to generate a reception baseband signal and transmission data. This is a process of modulating and generating a transmission burst band signal. The processing of the protocol unit (also referred to as L2 / L3 protocol unit) is protocol processing determined according to the wireless communication system in which the mobile terminal is used.
[0020]
The resources of the signal processing device 3 are controlled by the resource controller 4. With this control, it is possible to immediately respond to changes in the functions and specifications of the mobile terminal accompanying changes in usage conditions, thereby making it possible to easily implement handover control accompanying movement between different wireless communication systems. Specifically, the function of the portable terminal can be changed as desired by the resource controller 4 performing software change control, logic circuit configuration method change control, or both controls on the signal processing device 3 resources. Is done. In this way, the resources of the signal processing device 3 are adaptively controlled by the resource controller 4 so that the limited amount of resources can be used effectively.
[0021]
As will be described later, the resource controller 4 includes (a) a communication module for the second line via the first line and the wireless transmission / reception device 2 that can be used for communication between the mobile terminal 30 and the base station. Control for acquiring from the base station, (b) data including definition information of the signal processing function for the resource of the signal processing device 3 via the second line formed by the wireless transmission / reception device 2 and the acquired communication module Processing for transferring and saving data to the base station, and (c) processing for acquiring and restoring the data transferred to the base station and saved via the second line and the wireless transmission / reception device 2 I do.
[0022]
Of the resources of the signal processing device 3, an area for performing processing sufficient for software processing is realized by a general-purpose processor and a memory, and an area for which processing speed is required is a DSP (digital signal processor) or PLD (programmable). A logic circuit) or a hardware circuit (programmable hardware device) such as an FPGA (field programmable gate array). The DSP performs desired signal processing according to the program read from the storage device 5 under the control of the resource controller 4. The PLD performs a desired process by describing a circuit configuration according to a program read from the storage device 5 under the control of the resource controller 4. General-purpose processor, DSP, and programmable resources for signal processing device 3 Hardware It is also possible to configure with only one of the devices.
[0023]
The storage device 5 holds software (a program and a module that is a component of the program) used in the signal processing device 3, processing data such as reception data and transmission data, and a database such as a telephone book and an address book. ing. The storage device 5 reads / writes necessary programs and data under the control of the resource controller 4 or the system controller 6 that controls the entire interior of the mobile terminal. A program read from the storage device 5 is described in the signal processing device 3. As the storage device 5, a small hard disk drive device or a semiconductor memory such as FRAM is used. The storage device 5 can be attached to and detached from the portable terminal. For example, when the user goes out, the storage device 5 can be detached as necessary to carry the portable terminal 30.
[0024]
The input / output device unit 7 connected to the system controller 6 includes various input / output devices that serve as an interface with the user of the mobile terminal, such as a microphone for voice input, a speaker for voice output, a keyboard, and a display. It is out. The keyboard is used for dial keys, function key operations, text input, editing operations, and the like. On the display, incoming call information, contents, menus, and the like are displayed. The input / output device unit 7 further has an MPEG interface for performing moving image compression / decompression processing and a USB interface for performing serial input / output with an external device. These components of the input / output device unit 7 are connected by an internal bus, and the internal bus is connected to the system controller 6.
[0025]
FIG. 2 shows an example of a specific configuration of the wireless transmission / reception device 2 in FIG. The reception system will be described. An RF reception signal from the antenna 1 is guided to a low noise amplifier 11 by a transmission / reception changeover switch (or duplexer) 10. An RF signal amplified to a required level by the LNA 11 is input to a mixer 13 via a BPF (band pass filter) 12, where it is mixed with the first local signal LO 11 for reception from the frequency synthesizer 20, thereby down-converting. Is done. The output signal from the mixer 13 is input to the mixer 16 via the IF amplifier 14 and the band-pass filter 15, where it is mixed with the second local signal LO12 for reception from the synthesizer 20, thereby down to the required intermediate frequency. Converted. An output signal from the mixer 16 is input to the A / D converter 18 through the low-pass filter 17 and converted into a digital IF signal 19. The IF signal 19 is input to the signal processing device 3.
[0026]
In the transmission system, the digital IF signal output from the signal processing device 3 is converted into an analog signal by the D / A converter 22 and then input to the mixer 24 through the low-pass filter 23, where it is transmitted from the synthesizer 20. Up-converted by being mixed with the trusted first local signal LO21.
[0027]
The output signal from the mixer 24 is input to the mixer 27 via the band-pass filter 25 and the IF amplifier 26, where it is mixed with the second local signal LO22 for transmission from the synthesizer 20 to increase the required RF frequency. Converted. An RF output signal from the mixer 27 is amplified by a power amplifier 29 through a bandpass filter 28, guided to the antenna 1 by the switch 10, and radiated from the antenna 1 as a radio wave.
[0028]
Here, the LNA 11, the IF amplifier 14, the A / D converter 18, the frequency synthesizer 20, the D / A converter 22, the IF amplifier 26, and the power amplifier 29 are supplied from the system controller 6 based on commands from the input / output device unit 7. It is a function variable element controlled by a control parameter according to a given wireless communication system or a control parameter given from the system controller 6 via the resource controller 4 and the signal processing device 3. Specifically, the gains of the LNA 11, the IF amplifier 14, the IF amplifier 26, and the power amplifier 29 are controlled by control parameters, the frequencies of various local signals generated by the frequency synthesizer 20 are controlled, or the A / D converter 18 and The frequency of the clock signal supplied to the D / A converter 22 is controlled.
[0029]
As shown in FIG. 3, the signal processing device 3 according to the present embodiment includes, as hardware resources, an area 3A in which the signal processing function cannot be redefined, an area 3B in which the signal processing function cannot be redefined, and a switch unit (SW) 110. In the non-redefinable region 3A, frequently used logic circuits such as a CRC attach block 101, a CRC check block 102, a Viterbi decoder 103, a turbo decoder 104, a correlator 105, an accumulator 106, a demodulator 107, and a demodulator are provided. An interleaver 108 is implemented. The redefinable area 3B includes a plurality of PLDs 109 that are components of the FPGA. The switch unit 110 switches the connection between the region 3A and the region 3B and the connection of each block in the region 3B by control from the resource controller 4.
[0030]
4 and 5 show a connection state corresponding to a single wireless communication system realized by switching the switch unit 110 of the signal processing device 3 shown in FIG. The received signal input to the signal processing device 3 is input to the correlator 105 and the demodulator 07, and the output signal from the correlator 105 is input to the accumulator 106. An output signal from the accumulator 106 is input to the demodulator 107. An output signal from the demodulator 107 is used as an output signal of the signal processing device 3 via the deinterleaver 108, the Viterbi decoder 103, and the CRC check block 102. In FIG. 5, an equalizer 111 assigned with a function to the PLD 109 is added to FIG. The input signal is input to the demodulator 107 via the equalizer 111.
[0031]
FIG. 6 shows a connection example in which the signal processing device 3 is compatible with the two wireless communication systems A and B. The demodulator 107 is commonly used in both the systems A and B. In both systems A and B, the output signal from demodulator 107 is input to deinterleaver 108, and the output signal from deinterleaver 108 is input to Viterbi decoder 103 in system A and to turbo decoder 104 in system B. The Output signals from the Viterbi decoder 103 and the turbo decoder 104 are output from the signal processing device 3 via the CRC check block 102.
[0032]
The resource size of the signal processing device 3, especially the size of the areas 3A and 3B, differs from terminal to terminal. In a mobile terminal in which several application service functions are installed, many signal processing functions are already defined in the resources of the signal processing device 3. The amount of surplus resources of the signal processing device 3 changes from moment to moment according to the usage status of the mobile terminal 30. The size of the resource of the signal processing device 3 is defined when the mobile terminal 30 is shipped. If the portable terminal 30 is provided with a dedicated interface, it is possible to increase the resource amount of the signal processing device 3 in the form of an additional cartridge.
[0033]
The free space of the signal processing device 3 is different in the amount of resources, that is, the sum of blocks that can be redefined and blocks that cannot be redefined, or the usage status of resources differs for each mobile terminal 30. Every one is different. This is because a number of signal processing functions are already allocated to the resources of the signal processing device 3 in terminals that can change the definition of resources to which new services can be added. That is, the surplus resource amount changes from time to time according to the usage status of the mobile terminal 30.
[0034]
Various data including the resource definition information (program) of the signal processing device 3 are assets purchased by the user of the portable terminal 30 in most cases, and these are stored in the memory or the storage device 5 mounted on the signal processing device 3 or the like. Saved. When the user implements a large number of functions in the portable terminal 30, it can be considered that the resources of the signal processing device 3 are always tight. During repeated function changes, resources may not be used efficiently. This is the same phenomenon as that occurring in a hard disk in a personal computer.
[0035]
In order to efficiently use the resources of the signal processing device 3, it is necessary to optimize resource allocation. For optimization, it is desirable to clear the resource definition once. Here, even if a resource shortage occurs, it is useless to discard data including resource definition information that is an asset purchased by the user of the mobile terminal 30 in many cases, and imposes an extra economic burden on the user. It will be. If the user can use the storage device 5 and the free space of the storage device 5 is sufficient, data can be saved here. However, if the storage device 5 is detachable from the terminal and the user is outdoors or the like and there is no storage device 5, or if there is not enough free space in the storage device 5, it is not possible to avoid data in the storage device 5. difficult. Therefore, in this case, in this embodiment, the data owned by the resource of the mobile terminal 30 is avoided in the base station as follows.
[0036]
FIG. 7 is a diagram schematically illustrating a state in which the base station 40 avoids data owned by the resources of the mobile terminal 30 in this way. The portable terminal 30 is configured with the wireless transmission / reception device 2 and the signal processing device 3 so as to have a function capable of performing communication using one or more wireless lines. In order to save the data owned by the resource to the base station 40, the mobile terminal 30 first uses the first line 31 that can communicate with the base station 40 to use a second line that is a dedicated line for data transfer. 32 is requested to the base station 40. The first line 31 is a line used for normal communication between the mobile terminal 30 and the base station 40, and forms a cell coverage 33. The mobile terminal 30 is located in the cell coverage 33.
[0037]
In FIG. 7, an example in which a wireless line using a spot beam is used as the second line 32 is shown. Since the second line 32 is a line used for saving data, its signal transmission rate is as high as possible compared to the signal transmission rate of the first line 31 in order to realize efficient data transfer. It is desirable to be. However, the second line 32 does not need to be continuously available, and it is not necessary to be able to communicate over a wide area like the first line 31. Considering the frequency utilization efficiency and the like, a dedicated line using a spot beam is very efficient.
[0038]
Hereinafter, with reference to the flowchart shown in FIG. 8 and FIG. 9 showing the communication state between the mobile terminal 30 and the base station 40 at each of the main stages, the data owned by the resource of the mobile terminal 30 is stored in the base station 40. A specific processing procedure for evacuation will be described. Of the processes shown in FIG. 8, the process on the mobile terminal 30 side is basically performed by the cooperation of the resource controller 4, the system controller 6, or both controllers 4 and 6.
[0039]
The mobile terminal 30 using the software defined radio technology according to the present embodiment has a function capable of communicating with one or more base stations. First, in order to save the data owned by the resource to the base station 40, the mobile terminal 30 uses the first line 31 that can be used for communication with the current base station 40 as shown in FIG. A request is made to set the second line 32, which is a dedicated line for data transfer (step S101). Receiving this request, the base station 40 requests the portable terminal 30 to transfer peripheral information necessary for setting the second line 32 (step S102).
[0040]
The type of peripheral information requested from the mobile terminal 30 differs depending on the base station 40. For example, when the base station 40 is equipped with a device for providing a spot beam, it is possible to set the beam direction based on the information (location information) regarding the location of the mobile terminal 30, and spatially It is possible to realize excellent frequency utilization efficiency by reuse. If the base station 40 is provided with a beam width variable function, it is possible to assign a higher-level beam, and it is possible to realize excellent frequency utilization efficiency by spatial reuse. Similarly, if there is information on the moving speed and moving direction of the mobile terminal 30, more advanced beam assignment is possible. The position of the portable terminal 30 can be grasped by using means such as GPS. Further, the position of the mobile terminal 30 can be grasped by arranging a plurality of antennas in the base station 40 and estimating the arrival direction of radio waves.
[0041]
The mobile terminal 30 that has received a transfer request for peripheral information necessary for setting the second line 32 from the base station 40 in step S102 transfers the peripheral information to the base station 40 for notification (step S103). At this time, it is desirable that the mobile terminal 30 also notifies the terminal model information. In order to prepare a communication module for the second line 32 in the base station 40, it is necessary to prepare a module suitable for the model of the mobile terminal 30, and for that purpose information on the model information of the mobile terminal 30 is required. Because there is.
[0042]
Next, the base station 40 performs the process of step S104. In step S104, the base station 40 first determines the second line 32 to be actually allocated to the mobile terminal 30 while referring to the list indicating the type of the second line 32 that it holds. The list includes a center frequency, a bandwidth, an access method, an identifier indicating the usage status, information indicating resource definition information for providing the line, and the like. After determining the second line 32 to be used in this way, the base station 40 prepares a communication module (hereinafter referred to as a second line module) for the second line that is compatible with the model of the mobile terminal 30. If the second line module does not exist in the base station 40, the server is accessed via a network (not shown) to obtain a desired module. If the desired line module cannot be obtained, the second line 32 actually used is determined again referring to the type of the second line that the base station 40 has or referring to the strike, A second line module suitable for the model of the mobile terminal 30 is prepared.
[0043]
When the second line module is ready in this way, the base station 40 notifies the mobile terminal 30 of acceptance of the setting request for the second line 32 (step S105). In this notification, the resource amount (required squirrel source) of the mobile terminal 30 necessary for loading the second line module is described. Receiving this notification, the mobile terminal 30 calculates the amount of free resources of the signal processing device 3 (step S106). If the result of this calculation is that the mobile terminal 30 has enough resources to load the second line module, the mobile terminal 30 notifies the base station 40 that it is ready to receive the second line module (step S40). S107). An example of a procedure when there is no space will be described in an embodiment described later.
[0044]
The base station 40 that has received the notification in step S <b> 107 transfers the second line module to the portable terminal 30 using the first line 31. That is, as shown in FIG. 9B, the portable terminal 30 downloads the second line module using the first line 31 (step S108), and then transfers the second line module (download completion) to the base. The station 40 is notified (step S109).
[0045]
When the loading of the second line module is completed and the initial setting of the second line 32 is completed (step S110), the portable terminal 30 is stored in the resources of the portable terminal 30 using the second line 32. Data is transferred to the base station 40 as saved data (step S111). As a result, it is possible to make room for the resources of the mobile terminal 30. When the transfer of the save data is completed, the base station 40 notifies the mobile terminal 30 of the transfer completion (step S112). FIG. 9C shows a state in which peripheral information is transferred from the mobile terminal 30 to the base station 40 using the second line 32 and saved data such as resource definition information is transferred in step S111. Show.
[0046]
When the portable terminal 30 transfers the saved data to the base station 40 in this way, a part of the resources of the signal processing device 3 of the portable terminal 30 is released as shown in FIG. As a result, the mobile terminal 30 can perform processing when saving resources, such as processing that cannot be performed when there are few resources, for example, processing that efficiently reassigns functions assigned to the resources of the mobile terminal 30 (signal processing function for resources). It is possible to perform a so-called optimization operation such as (redefinition of) (step S113).
[0047]
When the work at the time of resource saving is completed, the portable terminal 30 requests the base station 40 to restore the saved data (step S114), and the data saved in the base station 40 using the second line 32 again is stored in the portable terminal 30. To be restored (step S115). Thereafter, the mobile terminal 30 notifies the base station 40 of the completion of the transfer of the saved data and the discard of the second line 32 (step S116), and the mobile terminal 30 discards the second line module (step S117). The base station 40 discards the second line 32 (step S118). Thereafter, the portable terminal 30 loads the first line module into the resource-released area of the signal processing device 3 as shown in FIG. 9 (e), and communicates with the base station 40 via the first line 31. Normal communication between them.
[0048]
The flowchart of FIG. 8 shows an example in which the second line module is held even when the work for saving resources of the mobile terminal 30 is performed (step S113). If is valid, the second line module may be discarded before the resource saving operation is performed. FIGS. 10 and 11 are flowcharts showing the flow of processing in this case, and the portable terminal 30 notifies the base station 40 that the second line 32 is discarded before performing the resource saving operation (step S123). The mobile terminal 30 discards the second line module (step S121), and the base station 40 discards the second line 32 (step S122). When the work for saving resources (step S123) is completed, the same processing so far is repeated as necessary (steps S124 to S138). 10 to 11 is basically performed by the resource controller 4 or the system controller 6 or the cooperation of the controllers 4 and 6.
[0049]
In this case, when data is restored from the base station 40 to the mobile terminal 30, the second line module is loaded in the same procedure as that for saving data from the mobile terminal 30 to the base station 40. Good. 10 and 11, the second line 32 used before and after the resource saving operation (step S123) of the mobile terminal 30 may not be the same.
[0050]
As described above, in this embodiment, even when the mobile terminal 30 is located outdoors where the storage device 5 or the like cannot be used, the resource definition information of the signal processing device 3 that the mobile terminal 30 has, etc. Can be saved in the base station 40. This makes it possible to easily perform processing that cannot be performed when there are few resources, such as processing that efficiently reassigns functions assigned to resources.
[0051]
The second line 32 is faster than the signal transmission speed of the first line 31, but the area where communication is possible may be narrow, and it is not necessary to secure the line over a long period of time. Providing a new dedicated line for data transfer as the second line 32 has the advantage that the data transfer to the base station 40 is completed in a short time and is also advantageous in terms of frequency utilization efficiency. The second line 32 is a temporary line and cannot be used for a long time.
[0052]
If the mobile terminal 30 transfers data such as resource definition information to the base station 40 and restores it to the terminal 30 again, it is safer to leave the first line module in the resource. It is. When communication between the base station 40 and the portable terminal 30 is ensured only by the second line 32 which is a temporary line, the portable terminal 30 and the base station are used when the second line 32 becomes unavailable. This is because communication with 40 is cut off. In order to get rid of this, when only the second line 32, which is a temporary line, can be used, a message is displayed on the display unit provided in the input / output device unit 7 of the portable terminal 30 according to the elapsed time, and the terminal It is desirable to encourage 30 users to try to maintain a wireless link. It is also useful to prompt the user with a warning along with the message display.
[0053]
Next, another embodiment of the present invention will be described with reference to FIGS. FIG. 12 schematically shows the usage amount of the resource (terminal resource) of the signal processing device 3 in the mobile terminal 30. In order to download the communication module (second line module) of the second line, which is a dedicated line for transferring the data owned by the resource in the terminal resource vacancy (the remainder of the terminal resource) to the base station 40 When the required space is not reached, it is necessary to create a space corresponding to “amount of resources used by the second line module” shown in FIG. That is, when there are few unused resources, the second line module cannot be downloaded. For this reason, the first line already owned is used to create a vacant space for loading the second line module to the terminal resource, and then the same procedure as described in FIG. 8 or FIG. 10 to FIG. Execute.
[0054]
Hereinafter, a procedure for saving data held by the mobile terminal 30 in the present embodiment to the base station 40 will be described with reference to a flowchart shown in FIG. The processes in steps S201 to S206 in FIG. 13 are the same as the processes in steps S101 to S106 described above with reference to FIG.
[0055]
Necessary for loading the second line module at the same time that the base station 40 ready for the second line module in step S205 notifies the portable terminal 30 of acceptance of the setting request for the second line 32. When the mobile terminal 30 is notified of the amount of resources (required squirrel source), the mobile terminal 30 that has received this notification, based on the required resources, the resource amount of the signal processing device 3 required for loading the second line module ( “Amount of resources used by the second line module” in FIG. 12 is calculated, and the amount of free resources of the signal processing device 3 (“residue of terminal resources” in FIG. 12) is calculated (step S206). ).
[0056]
Here, when the amount of free resources calculated in step S206 is less than the amount of resources used by the second line module as shown in FIGS. 12 and 16A, in other words, the signal processing device 3 If the resource does not have enough space to load the second line module, the portable terminal 30 is connected to the terminal 30 to save the data owned by the resource of the signal processing device 3 to the base station 40. The base station 40 that can communicate is requested to save the first data, which is a part of the data, through the first line 31 through which the terminal can communicate (step S207). In this request, information indicating the data amount of the first data to be saved is described.
[0057]
The base station 40 has a line different from the first line 31 that is currently communicating with the mobile terminal 30, and is for saving data based on the position of the mobile terminal 30, the reception environment, the surplus frequency resource, and the like. Determine the second line to be used for. The base station 40 then prepares a second line module to be used for data evacuation, and has received a request for data evacuation from the portable terminal 30, that is, preparations for receiving the first evacuation data are now possible. Notification to that effect is made (step S208).
[0058]
Next, in order to make a space necessary for loading the second line module in the resource of the signal processing device 3, the portable terminal 30 transmits the data via the first line 31 as shown in FIG. A part is transferred to the base station 40 as first save data (step S209), and the base station 40 that has received this notifies the portable terminal 30 of the completion of transfer of the first save data (step S210). As a result, as shown in FIG. 16B, a resource for loading the second line module is secured.
[0059]
Next, when the free space for loading the second line module is formed, the portable terminal 30 notifies the base station 40 that it is ready to receive the second line module (step S40). S211). Receiving this notification, the base station 40 transfers the second line module to the portable terminal 30 using the first line 31 (step S212), and then the portable terminal 30 transfers the second line module (download complete). ) To the base station 40 (step S213).
[0060]
When the loading of the second line module is completed and the initial setting of the second line 32 is completed (step S214), the portable terminal 30 is stored in the resources of the portable terminal 30 using the second line 32. The remaining data is transferred to the base station 40 as second saved data (step S215). When the transfer of the second save data is completed, the base station 40 notifies the mobile terminal 30 of the transfer completion (step S216).
[0061]
When the portable terminal 30 transfers the saved data to the base station 40 in this way, a part of the resources of the signal processing device 3 of the portable terminal 30 is released and the resources can be afforded, so that the portable terminal 30 can perform the work when saving the resources. As a result, it is possible to perform processing that could not be performed when there are few resources, for example, processing for efficiently reallocating the functions allocated to the resources of the mobile terminal 30 (step S217).
[0062]
When the work at the time of resource saving ends, the portable terminal 30 requests the base station 40 to restore the saved data (step S218), and the data saved in the base station 40 again using the second line 32 is stored in the portable terminal 30. To be restored (step S219). Thereafter, the portable terminal 30 notifies the base station 40 of the completion of the transfer of the saved data and the destruction of the second line 32 (step S220), and the portable terminal 30 discards the second line module (step S221). The base station 40 discards the second line 32 (step S222).
[0063]
Furthermore, the portable terminal 30 requests the base station 40 to restore the saved data using the first line 31 (step S223), and again uses the second line 32 to send the data saved to the base station 40 to the portable terminal. 30 for restoration (step S224). Thereafter, the mobile terminal 30 notifies the base station 40 of the completion of transfer of the saved data (step S225). The processing on the mobile terminal 30 side in the processing of FIG. 13 is basically performed by the cooperation of the resource controller 4 or the system controller 6 or the controllers 4 and 6.
[0064]
The flowchart in FIG. 13 shows an example in which the second line module is held even when the resource saving operation of the mobile terminal 30 is performed (step S217). If is valid, the second line module may be discarded before the resource saving operation is performed.
[0065]
FIG. 14 and FIG. 15 are flowcharts in this case, and the mobile terminal 30 notifies the base station 40 of the discarding of the second line 32 (step S230) before performing the resource saving operation (step S233). The mobile terminal 30 discards the second line module (step S231), and the base station 40 discards the second line 32 (step S232). When the resource saving operation (step S233) is completed, the same processing so far is repeated as necessary (steps S234 to S251). 14 to 15 is basically performed by the cooperation of the resource controller 4, the system controller 6, or both controllers 4 and 6.
[0066]
Next, an example of work at the time of terminal resource saving in step S113 of FIG. 8, step S123 of FIGS. 10 to 11, step S217 of FIG. 13, and step S233 of FIGS. This operation is an operation corresponding to the defragmentation of the hard disk in the resource of the signal processing device 3.
[0067]
As described above, in the portable terminal 30 using the software defined radio technology as in the present embodiment, the signal processing device 3 needs a lot of resources to accommodate many functions. The functions that a software defined radio should have generally tend to swell as services diversify. The function of the portable terminal 30 based on such software defined radio technology is realized by configuring the resource of the signal processing device 3 to realize a desired function based on the resource definition information.
[0068]
That is, in order for the terminal 30 to correspond to a certain wireless communication system (referred to as A system), it is necessary to allocate the resources of the signal processing device 3 for the A system based on the resource definition information for the A system. When the user of the portable terminal 30 wants to implement a desired function in the terminal 30, he purchases resource definition information for realizing the function, loads the resource definition information into the terminal 30 himself, Realize the function.
[0069]
On the other hand, in order to newly implement a function for another wireless communication system (referred to as B system) on the mobile terminal 30 in which the function for the A system is already implemented in the terminal resource, the signal processing of the terminal 30 The resource definition information for realizing the function for the B system is purchased and implemented in the free resource of the device 3. The newly added function is simply assigned to the resource itself. For this reason, it is possible to share the functions already implemented and reduce the amount of resources used. In the mobile terminal 30 in which the user implements a plurality of functions, the resources are always tight. Therefore, if it is possible to share the functions already implemented and improve the efficiency of the resource definition, it is possible to give a margin to the terminal resource usage.
[0070]
Such efficiency of resource definition is difficult to realize unless there is sufficient resource vacancy, but according to the present embodiment, data such as resource definition information already loaded in the mobile terminal 30 is saved in the base station 40. Therefore, these processes can be realized.
[0071]
In each of the above-described embodiments, when the same information as the resource definition information transferred from the mobile terminal 30 to the base station 40 exists in the base station 40, the corresponding data is backed up by the base station 40. It is also possible to record that the saved data is not transferred. In this way, useless data transfer can be omitted.
[0072]
Next, another embodiment of the present invention will be described with reference to FIG. In order to realize collective management of user information, data collection, and provision of advanced customer services, it is desirable that the mobile terminal 30 can be operated remotely. FIG. 17 shows an example in which the remote line 42 connected to the network 41 takes the lead and the second line 32 used for saving data of the portable terminal 30 is set by a spot beam wireless line. A base station 40 that can communicate with the mobile terminal 30 is connected to a network 41. For this reason, the remote user 42 can monitor the portable terminal 30 via the network 41.
[0073]
Hereinafter, a processing procedure in the present embodiment will be described with reference to flowcharts shown in FIGS.
First, the remote user 42 determines the location of the base station 40 to which the target mobile terminal 30 is connected as H.264. L. An inquiry is made to R (home location register) (step S301). H. based on this inquiry. L. Upon obtaining the connection destination information response from R (step S302), the remote user 42 requests the connection destination base station 40 to save data including the resource definition information of the signal processing device 3 in the portable terminal 30. (Step S303).
[0074]
Receiving the data avoidance request, the base station 40 notifies the mobile terminal 30 of the setting of the second line 32, which is a dedicated line for data transfer, and the same as described above necessary for setting the second line 32. The portable terminal 30 is requested to transfer the peripheral information of (No. S304).
[0075]
The mobile terminal 30 that has received a transfer request for peripheral information necessary for setting the second line 32 from the base station 40 in step S304 transfers the peripheral information to the base station 40, preferably together with information on the terminal model. Notification is made (step S305).
[0076]
Next, the base station 40 refers to a list similar to the above-described list indicating the type of the second line possessed, determines the second line to be actually allocated to the mobile terminal 30, and further uses the second line. After determining the second line 32, a second line module, which is definition information (module) for the second line 32 that is suitable for the model of the portable terminal 30, is prepared (step S306).
[0077]
Thereafter, the base station 40 notifies the remode user 42 of acceptance of the data saving request of the portable terminal 30 (step S307), and further notifies the setting of the second line 32 (step S308). In this notification, the resource amount (required squirrel source) of the mobile terminal 30 necessary for loading the second line module is described.
[0078]
Receiving this notification, the mobile terminal 30 calculates the amount of free resources of the signal processing device 3 (step S309). As a result of this calculation, the mobile terminal 30 can communicate with the terminal 30 in order to save the data owned by the resource to the base station 40 if there is an available resource for loading the second line module. The station 40 is requested to save the first data through the first line through which the terminal can communicate (step S310).
[0079]
The base station 40 has a line different from the first line that is currently communicating with the mobile terminal 30, and data is saved based on the position of the mobile terminal 30, the reception environment, the surplus frequency resources, etc. The second line 32 used for the purpose is determined. The base station 40 then prepares a second line module to be used for data evacuation, and has received a request for data evacuation from the portable terminal 30, that is, preparations for receiving the first evacuation data are now possible. Notification to that effect is made (step S311).
[0080]
Next, the portable terminal 30 transfers the first evacuation data to the base station 40 via the first line (step S312), and the base station 40 that has received this transfers the completion of the transfer of the first evacuation data to the portable terminal 30. Notification is made (step S313).
[0081]
Next, if there is still a resource available for loading the second line module, the portable terminal 30 notifies the base station 40 that it is ready to receive the second line module (step S314). ). Receiving this notification, the base station 40 transfers the second line module to the mobile terminal 30 using the first line (step S315), and then the mobile terminal 30 transfers the second line module (download completion). To the base station 40 (step S316).
[0082]
When the loading of the second line module is completed and the initial setting of the second line 32 is completed (step S317), the portable terminal 30 is stored in the resources of the portable terminal 30 using the second line 32. The data is transferred to the base station 40 as saved data (step S318). As a result, it is possible to make room for the resources of the mobile terminal 30. When the transfer of the save data is completed, the base station 40 notifies the mobile terminal 30 of the transfer completion (step S319), and further notifies the remote user 42 of the transfer data transfer completion (step S320).
[0083]
When the portable terminal 30 transfers the saved data to the base station 40 in this way, a part of the resources of the signal processing device 3 of the portable terminal 30 is released and the resources can be afforded, so that the portable terminal 30 can perform the work at the time of saving the resources. As described above, it is possible to perform processing that could not be performed when there are few resources, for example, processing for efficiently reallocating the functions allocated to the resources of the mobile terminal 30. Actually, after steps S319 and S320, the portable terminal 30 notifies the base station 40 of discarding the second line 32 (step S321), and the portable terminal 30 discards the second line module (step S322). The base station 40 discards the second line 32 (step S323), and thereafter, the mobile terminal 30 performs the above-described resource saving operation (step S324).
[0084]
The remote user 42 requests the base station 40 to restore the saved data when the work at the time of saving the resource in the mobile terminal 30 is completed (step S325). Thereafter, processing similar to steps S304 to S320 in FIG. 18 is performed (steps S326 to S344). The processing on the mobile terminal 30 side in the processes of FIGS. 18 to 19 is basically performed by the cooperation of the resource controller 4 or the system controller 6 or the controllers 4 and 6.
[0085]
With the above procedure, it is possible to set the second line 32, which is a dedicated line for data transfer, led by the network 41. In the above description, the procedure for setting the second line 32, which is a dedicated line for data transfer, has been described as being performed by the remote user 42. However, the software on the computer to which the remote user 42 is logged in performs the same procedure. It may be executed, or a server that performs these procedures on behalf may be executed.
[0086]
Next, advantages of the present embodiment will be described. The portable terminal 30 using software defined radio technology as the target of this embodiment can be expected to have various applications due to its diversity. For example, a salesperson who handles customers can implement a customer information management function in the portable terminal 30. In such a case, the sales person becomes the remote user 42 in FIG. 17 and shares data by periodically transferring the data held by the sales payer to the sales office by remote operation from the sales office to which the sales staff belongs. It is possible to improve the efficiency of business by making it easier.
[0087]
In this way, the operation of transferring the data held by the salesperson to the sales office by remote operation is performed by loading a data processing function having a GUI, for example, into the data held by the user of the portable terminal 30 according to a certain procedure. This is an operation of adding signal processing and transferring the data after signal processing to a database. In the portable terminal 30 of the present embodiment by software radio technology, since various functions can be implemented, the usage status of terminal resources is different for each user, and it is expected that the resources are always tight. . In other words, it is possible that there is not enough room for loading the data processing function, and there is a shortage of resource surplus due to functions other than the regular work. This is because the data processing function is a function that is not always necessary as a function of the mobile terminal 30.
[0088]
In such a situation, according to the present embodiment, since the data of the mobile terminal 30 can be saved to the base station 40 by remote operation, it is possible to secure a sufficient resource vacancy, thereby performing a desired process. It can be easily realized.
[0089]
【The invention's effect】
As described above, according to the present invention, efficient resource management according to the current resource usage status of a wireless communication device used as a mobile terminal can be realized. In particular, the wireless communication device exists at an arbitrary point. However, the data including the resource definition information of the terminal can be saved, and an instantaneous shortage of resources can be solved. Furthermore, resource management can be performed remotely by enabling data evacuation not only by the terminal but also by the base station via the network, etc., and centralized management of mobile terminals Is possible.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a wireless communication apparatus according to an embodiment of the present invention.
FIG. 2 is a block diagram showing a configuration example of a wireless transmission / reception device in FIG.
FIG. 3 is a block diagram showing a configuration example of the signal processing device in FIG.
4 is a diagram showing a connection state corresponding to one radio communication system having the signal processing device in FIG. 1;
FIG. 5 is a diagram showing a connection state corresponding to another radio communication system of the signal processing device in FIG. 1;
6 is a diagram showing a connection state of the signal processing device in FIG. 1 corresponding to two wireless communication systems.
FIG. 7 is a diagram schematically showing a state when data owned by a resource of a mobile terminal that is a wireless communication device according to an embodiment of the present invention is saved in a base station;
FIG. 8 is a flowchart showing a first example of a procedure for saving data owned by the resource of the mobile terminal to the base station;
9 schematically shows a communication state and a resource state between the mobile terminal and the base station at each stage when data owned by the resource of the mobile terminal is saved in the base station in the procedure of FIG. Figure
FIG. 10 is a flowchart showing a second example of a procedure for saving data owned by the resource of the mobile terminal to the base station;
FIG. 11 is a flowchart showing a second example of a procedure for saving data owned by the resource of the mobile terminal to the base station;
FIG. 12 is a diagram schematically showing the amount of signal processing device resources (terminal resources) used in the mobile terminal;
FIG. 13 is a flowchart showing a third example of a procedure for saving data owned by the resource of the mobile terminal to the base station;
FIG. 14 is a flowchart illustrating a fourth example of a procedure for saving data owned by the resource of the mobile terminal to the base station;
FIG. 15 is a flowchart showing a fourth example of a procedure for saving data owned by the resource of the mobile terminal to the base station;
FIG. 16 is a schematic diagram illustrating a communication state and a resource state between the mobile terminal and the base station at each stage when data owned by the resource of the mobile terminal is saved in the base station in the procedure of FIGS. 13 to 15; Diagram
FIG. 17 is a diagram schematically illustrating a state when data owned by a resource of a mobile terminal that is a wireless communication device according to another embodiment of the present invention is saved in a base station;
FIG. 18 is a flowchart showing an example of a procedure for saving data owned by the resource of the mobile terminal to the base station;
FIG. 19 is a flowchart showing an example of a procedure for saving data owned by the resource of the mobile terminal to the base station;
[Explanation of symbols]
1 ... Antenna
2 ... Wireless transmission / reception device
3 ... Signal processing device
4 ... Resource controller
6 ... System controller
7 ... I / O device unit
30 ... Mobile terminal
31 ... first line
32 ... Third line
33 ... Cell coverage
40 ... Base station
41 ... Network
42 ... Remote user

Claims (7)

Wireless communication including a wireless transmission / reception device for transmitting / receiving a wireless signal and a signal processing device for performing signal processing of a predetermined signal processing function necessary for the transmission / reception using the resource, including a resource capable of redefining a signal processing function In a wireless communication method for performing communication between a device and a base station,
Saving the signal processing function definition information for the resource by transferring it to the base station,
There rows redefinition of the signal processing functions for the resource from the while the retracted wireless communication apparatus temporarily clears the definition of a signal processing function in the resource,
After that, the radio communication method to be restored by transferring the definition information saved in the base station to the wireless communication device. Wireless communication including a wireless transmission / reception device for transmitting / receiving a wireless signal and a signal processing device for performing signal processing of a predetermined signal processing function necessary for the transmission / reception using the resource, including a resource capable of redefining a signal processing function In a wireless communication method for performing communication between a device and a base station,
Obtaining a communication module for a second line from the base station via a first line usable for communication between the wireless communication device and the base station;
Transferring and saving the definition information of the signal processing function for the resource to the base station via a second line formed by the wireless transmission / reception device and the acquired communication module;
In a state in which the definition information has been evacuated is transferred to the base station, redefinition of the signal processing function is performed on the resource definition signal processing functions from being temporarily cleared in the resources in the wireless communication device A wireless communication method comprising: transferring the second line to the wireless communication device and restoring the definition information transferred and saved to the base station later. A wireless transmitting / receiving device for transmitting and receiving wireless signals;
A signal processing device including a resource capable of redefining a signal processing function, and performing signal processing of a predetermined signal processing function necessary for the transmission and reception by the resource;
A controller for controlling the wireless transmission / reception device and the signal processing device,
The controller transfers (a) definition information of the signal processing function for the resource to the base station via the wireless transmission / reception device, and (b) signals in the resource in a state where the definition information is saved after the definition of the processing function is once cleared lines Tsu redefined signal processing functions to the resource capture via the wireless transceiver device said definition information saved in (c) the base station A wireless communication apparatus for restoring on the signal processing device.   The controller acquires (a) a communication module for the second line via the first line and the wireless transmission / reception device that can be used for communication between the wireless communication device and the base station from the base station. And (b) transferring and saving the definition information to the base station via the second line formed by the wireless transmission / reception device and the acquired communication module, and (c) transferring to the base station The wireless communication apparatus according to claim 3, wherein the definition information saved and saved is acquired and restored via the second line and the wireless transmission / reception device.   When the controller acquires the communication module for the second line from the base station, if there is not enough space to accommodate the communication module in the resource, the controller transmits the wireless transmission / reception device and the first The wireless communication apparatus according to claim 4, wherein a part of the definition information is transferred to the base station and saved via the line.   The wireless communication apparatus according to claim 4, wherein the controller transfers only the definition information that does not exist in the base station from the definition information to the base station and saves the definition information.   The wireless communication device according to claim 3 or 4, wherein the controller performs the processes (a), (b), and (c) in response to a request from the base station.

Images