JP2010114643A - Software wireless device, software wireless device management system, and method and program for diagnosing software wireless device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a software wireless device which solves the problem that software for the software wireless device is changed only at specific places. <P>SOLUTION: A transmitting and receiving part 12 includes functions for transmitting and receiving data, and achieves at least a portion of functions among the functions by using software recorded in a recording part 11. A transmission and reception port 13 receives software for changing the software recorded in the recording part 11 from a management server. A changing part 14 changes the software recorded in the recording part 11 to the software for change received by the transmission and reception port 13. When the changing part 14 changes the software, a self-diagnosis part 15 measures transmitting and receiving characteristics of the transmitting and receiving part 12, and diagnoses whether the measured transmitting and receiving characteristics satisfy predetermined constraints. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a software defined radio, a software defined radio management system, a software defined radio diagnostic method, and a program whose transmission / reception characteristics are changed by changing software.

  2. Description of the Related Art In recent years, software radios that realize at least a part of radio functions for transmitting and receiving data wirelessly have been proposed or put into practical use. In such a software defined radio, the transmission / reception characteristics can be changed by replacing software that realizes the wireless function, so that the transmission / reception characteristics can be easily changed.

  However, the transmission / reception characteristics after the software is replaced do not always satisfy a predetermined constraint such as a design standard. For this reason, when the software is replaced, it is necessary to confirm whether the transmission / reception characteristics after the software is replaced satisfy a predetermined constraint.

  In order to confirm the transmission / reception characteristics after the software is replaced, first, the software recorded on the recording medium is installed in the software defined radio. An external measuring device for confirming the transmission / reception characteristics needs to measure the transmission / reception characteristics of the software defined radio.

  For this reason, the transmission / reception characteristics after software replacement are limited to a specific location such as a manufacturing factory having a software defined radio, a recording medium recording software installed in the software defined radio, and an external measuring instrument. It could not be measured.

  Moreover, since it is necessary to confirm the transmission / reception characteristics after replacing the software for each software defined radio, it is very time-consuming.

  Patent Document 1 describes a certification test system that can reduce this effort.

  In this certification test system, a test software radio representing a plurality of software radios is prepared. In addition, the software under test is installed in the software radio for testing. Then, the test bench corresponding to the external measurement device performs a qualification test to check whether the specifications of the software defined radio are within the regulations stipulated by laws and regulations, and determines whether or not the qualification test is acceptable.

  In addition, if the test software radio passes the certification test, the test radio radio is guaranteed to pass each certification test of multiple software radios represented by the test software radio. Software radios are designed.

For this reason, if the certification test is performed only on the test software radio, it is not necessary to perform the certification test on the software radio. Therefore, in the system described in Patent Document 1, if the software radio qualification test is changed to check whether the transmission / reception characteristics satisfy the constraints, the effort to check the transmission / reception characteristics for each software radio is reduced. It becomes possible to do.
JP 2001-189700 A

  There is no guarantee that software for software radios will be replaced correctly. If the replacement of software is not performed normally, the transmission / reception characteristics of the software defined radio will not satisfy a predetermined constraint.

  In the system described in Patent Document 1, when the software radio qualification test is changed to check whether the transmission / reception characteristics satisfy the constraints, the software radio It is only guaranteed that the transmission / reception characteristics of

  For this reason, in order to confirm whether or not the software replacement has been normally performed, it is necessary to confirm whether or not the transmission / reception characteristics satisfy the constraints for all software defined radios.

  However, in order to confirm the transmission / reception characteristics, as described above, it can be measured only at a specific place such as a manufacturing factory having a recording medium and an external measuring instrument. Therefore, there is a problem that the software can be replaced only at a specific place.

  An object of the present invention is a software radio, a software radio management system, and software that solve the above-mentioned problem that the software of the software radio can be replaced only at a specific location. A diagnostic method and a program for a radio are provided.

  A software defined radio according to the present invention is a software defined radio that can be connected to a management server, and has a recording means for recording software for transmitting and receiving data and a function for transmitting and receiving data. Transmitting / receiving means for realizing at least a part of the functions using software recorded in the recording means; and software for replacing software recorded in the recording means from the management server. Receiving communication means; replacement means for replacing software recorded in the recording means with replacement software received by the communication means; and when the replacement means replaces the software, the transmission / reception means Diagnostic means for measuring transmission / reception characteristics and diagnosing whether or not the measured transmission / reception characteristics satisfy a predetermined constraint.

  A software defined radio management system according to the present invention is a software defined radio management system including a software defined radio and a management server connectable to the software defined radio, wherein the management server includes the software radio. Storage means for storing an address of the radio and software for replacing transmission / reception software for the software radio to transmit and receive data; and replacement software in the storage means for storing the storage means Transmission means for transmitting to the software radio at the address of the software radio, the software radio has a recording means for recording the software and a function of transmitting / receiving data, and at least of the functions The transmission / reception means for realizing some functions using software recorded in the recording means, and the management server Communication means for receiving replacement software, replacement means for replacing the software recorded in the recording means with the replacement software received by the communication means, and the replacement means for replacing the software And diagnostic means for measuring transmission / reception characteristics of the transmission / reception means and diagnosing whether or not the measured transmission / reception characteristics satisfy a predetermined constraint.

  A first software radio diagnosis method according to the present invention has a recording means for recording software for transmitting and receiving data, and a function for transmitting and receiving data, and at least a part of the functions is included. A software radio diagnostic method comprising: transmission / reception means implemented using software recorded in the recording means, for replacing software recorded in the recording means from a management server The software recorded in the recording means is replaced with the received replacement software, the transmission / reception characteristics of the transmission / reception means are measured, and the measured transmission / reception characteristics are determined in advance. Diagnose whether the specified constraints are satisfied.

  The second software radio diagnostic method according to the present invention comprises a recording means for recording software for transmitting and receiving data, and a function for transmitting and receiving data, and at least a part of the functions is the function described above. A software radio including a transmission / reception means realized using software recorded in the recording means, software for replacing the software radio address and software recorded in the recording means And a management server including a storage unit that stores the information in association with each other, and a software radio diagnosis method using a software radio management system including the storage server, wherein the management server replaces software in the storage unit To the software defined radio at the address in the storage means, and the software defined radio transmits the replacement software from the management server. The software radio replaces the software recorded in the recording means with the received replacement software, and the software radio sets the transmission / reception characteristics of the transmission / reception means. Measure and diagnose whether or not the measured transmission / reception characteristics satisfy a predetermined constraint.

  The program according to the present invention is a software program that records at least a part of functions for transmitting / receiving data to / from a computer connected to recording means for recording software for transmitting / receiving data. A procedure realized by using software, a procedure for receiving software replacement software recorded in the recording means from the management server, and the received replacement software in the recording means. A procedure for replacing recorded software and a procedure for measuring transmission / reception characteristics of the transmission / reception means and diagnosing whether or not the measured transmission / reception characteristics satisfy a predetermined constraint are executed.

  According to the present invention, it is possible to replace software of a software defined radio even at a specific location.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a schematic diagram showing the configuration of the software defined radio according to the first embodiment of the present invention.

  In FIG. 1, the software defined radio 1 includes a recording unit 11, a transmission / reception unit 12, a transmission / reception port 13, a replacement unit 14, and a self-diagnosis unit 15. Further, the software defined radio 1 can be connected to a management server 2 that manages the software defined radio 1.

  The recording unit 11 records software for transmitting and receiving data.

  The transmission / reception unit 12 has a transmission / reception function for wirelessly transmitting / receiving data to / from a wireless access point (not shown) such as a wireless base station. Further, the transmission / reception unit 12 realizes at least a part of the transmission / reception functions using software recorded in the recording unit 11. The transmission / reception functions implemented using software include, for example, demodulation of received signals, modulation of transmission signals, and error correction of data. Note that the functions realized using software are not limited to these examples, and can be changed as appropriate.

  The transmission / reception unit 12 includes a transmission unit 12a, a reception unit 12b, and a common unit 12c.

  The transmitting unit 12a has a function for transmitting data to the wireless access point. The receiving unit 12b has a function for receiving data from the wireless access point. The common unit 12c has a function common to data transmission and data reception. The common function is, for example, clock signal generation.

  The transmission / reception port 13 is an example of communication means. The transmission / reception port 13 receives software replacement software recorded in the recording unit 11 from the management server 2.

  The replacement unit 14 replaces the software recorded in the recording unit 11 with the replacement software received by the transmission / reception port 13.

  When the replacement unit 14 replaces software, the self-diagnosis unit 15 measures the transmission / reception characteristics of the transmission / reception unit 12 and diagnoses whether the measured transmission / reception characteristics satisfy a predetermined constraint.

  For example, the self-diagnosis unit 15 checks the error correction code given to the data received by the transmission / reception unit 12, and performs error correction when an error is detected. Further, the self-diagnosis unit 15 counts the number of bits or frames having the error, and measures the error rate (bit error rate or frame error rate) as transmission / reception characteristics. The self-diagnosis unit 15 determines whether or not the error rate, which is a transmission / reception characteristic, is equal to or greater than a predetermined threshold. Then, the self-diagnosis unit 15 determines that the transmission / reception characteristics do not satisfy the constraint if the error rate is equal to or greater than the threshold, and determines that the transmission / reception characteristics satisfy the constraint if the error rate is less than the threshold. In this case, the self-diagnosis unit 15 can check whether the software is correctly installed.

  The self-diagnosis unit 15 configures a route through which data is transmitted from the transmission unit 12a to the reception unit 12b, and transmits pseudo-random data to the route. The self-diagnosis unit 15 counts the number of bits or frames having an error in the pseudo-random data, and measures the error rate as a transmission / reception characteristic. The self-diagnosis unit 15 determines whether or not the error rate, which is a transmission / reception characteristic, is equal to or greater than a predetermined threshold. Then, the self-diagnosis unit 15 determines that the transmission / reception characteristics do not satisfy the constraint if the error rate is equal to or greater than the threshold, and determines that the transmission / reception characteristics satisfy the constraint if the error rate is less than the threshold. In this case, it is possible to check whether the software is correctly installed in the software radio 1 alone.

  In addition, the self-diagnosis unit 15 measures the waveform of data modulated with pseudo-random data transmitted from the transmission unit 12 as transmission / reception characteristics. The self-diagnosis unit 15 compares the waveform, which is the measured transmission / reception characteristic, with the spectrum mask, and determines whether the spectrum of the waveform is included in the allowable range defined by the Radio Law. The self-diagnosis unit 15 determines that the transmission / reception characteristics satisfy the restriction if the waveform is included in the allowable range, and determines that the transmission / reception characteristics do not satisfy the restriction if the waveform is not included in the allowable range. To do.

  The spectrum mask is data indicating an allowable range defined by the Radio Law, transmitted from the management server 2 together with software, and held in the self-diagnosis unit 15.

  Next, the operation will be described.

  FIG. 2 is a flowchart for explaining the operation of the software defined radio 1 of this embodiment.

  In step S <b> 201, when the transmission / reception port 13 receives the replacement software, the transmission / reception port 13 transmits the replacement software to the replacement unit 14. When the replacement unit 14 receives the replacement software, the replacement unit 14 executes Step S202.

  In step S202, the replacement unit 14 replaces the software recorded in the recording unit 11 with the received replacement software. Thereafter, step S203 is executed.

  In step S203, the replacement unit 14 instructs the self-diagnosis unit 15 to start diagnosis. When receiving the instruction, self-diagnosis unit 15 measures the transmission / reception characteristics of transmission / reception unit 12. When the self-diagnosis unit 15 measures the transmission / reception characteristics, it executes step S204.

  In step S204, the self-diagnosis unit 15 diagnoses whether the measured transmission / reception characteristics satisfy a predetermined constraint.

  Next, the effect will be described.

  In the present embodiment, the transmission / reception unit 12 has a function of transmitting / receiving data, and at least a part of the functions is realized using software recorded in the recording unit 11. The transmission / reception port 13 receives software replacement software recorded in the recording unit 11 from the management server. The replacement unit 14 replaces the software recorded in the recording unit 11 with the replacement software received by the transmission / reception port 13. When the replacement unit 14 replaces software, the self-diagnosis unit 15 measures the transmission / reception characteristics of the transmission / reception unit 12, and diagnoses whether the measured transmission / reception characteristics satisfy a predetermined constraint.

  In this case, software that realizes at least some of the functions for transmitting and receiving data is replaced with replacement software received from the management server. When the software is replaced, it is determined whether the transmission / reception characteristics of the software defined radio satisfy the constraints.

  Accordingly, the software can be replaced without a recording medium or software for recording the replacement software. Therefore, even if it is not a specific place, it becomes possible to replace the software of a software defined radio.

  Next, a second embodiment will be described.

  FIG. 3 is a block diagram showing a software defined radio management system according to the second embodiment of the present invention.

  In FIG. 3, the software defined radio management system includes a software defined radio 1 and a management server 2. The number of software defined radios 1 is only three in FIG. 3, but is not particularly limited as long as it is 1 or more in practice. Each software defined radio 1 and management server 2 can be connected to each other via the Internet 100.

  Each software defined radio 1 has the same configuration as that shown in FIG. In addition, the following functions are added to the recording unit 11 and the self-diagnosis unit 15.

  The recording unit 11 records identification information that identifies the software radio device 1 itself.

  When the self-diagnosis unit 15 diagnoses whether the transmission / reception characteristics satisfy the restriction, the self-diagnosis unit 15 transmits the diagnosis result and the identification information recorded in the recording unit 11 to the management server 2 via the transmission / reception port 13.

  The management server 2 includes a software defined radio (SDR) radio database 21, a transmission / reception port 22, and a control unit 23.

  The SDR radio database 21 is an example of a storage unit. The SDR radio database 21 associates the address of the software radio 1 with the software for replacement transmitted to the software radio 1 at that address for each piece of identification information that identifies the software radio 1. Remember.

  The transmission / reception port 22 is an example of a transmission means. A diagnosis result and identification information are received from each software defined radio 1.

  The control unit 23 transmits the replacement software in the SDR radio database 21 to the software radio 1 having an address associated with the replacement software via the transmission / reception port 22.

  In addition, when the transmission / reception port 22 receives the diagnosis result and the identification information, the control unit 23 confirms the diagnosis result and performs processing according to the diagnosis result. For example, when the diagnosis result indicates that the transmission / reception characteristics do not satisfy the restriction, the control unit 23 notifies the diagnosis result and identification information using e-mail or the like such as an administrator of the software defined radio management system. It is assumed that the e-mail address is stored in advance in the SDR radio database 21.

  Next, the operation will be described.

  FIG. 4 is a flowchart for explaining the operation of the software defined radio management system of this embodiment. For example, when the replacement software in the SDR radio database 21 of the management server 2 is changed, or when the software radio management system administrator gives an instruction to transmit the replacement software, the control unit 23 executes step S401.

  In step S401, the control unit 23 of the management server 2 acquires from the SDR radio database 21 the changed software or software instructed to be transmitted, and an address associated with the software. The control unit 23 transmits the acquired software to the software defined radio 1 at the acquired address. Thereafter, step S402 is executed.

  In step S402, the software defined radio 1 performs software replacement and diagnosis of transmission / reception characteristics. Note that the processing in step S402 is the same as the processing described in FIG. 2, and thus detailed description thereof is omitted.

  When the self-diagnosis unit 15 of the software defined radio 1 diagnoses transmission / reception characteristics in step S402 (step S204), step S403 is executed.

  In step S403, the self-diagnosis unit 15 acquires identification information from the recording unit 11, and transmits the identification information and the diagnosis result to the transmission / reception port 22 of the management server 2 via the transmission / reception port 13. When receiving the identification information and the diagnosis result, the transmission / reception port 22 executes step S404.

  In step S <b> 404, the transmission / reception port 22 transmits the identification information and the diagnosis result to the control unit 23. Upon receiving the diagnosis result, the control unit 23 confirms the diagnosis result and performs processing according to the confirmed diagnosis result.

  Next, the effect will be described.

  In the present embodiment, the control unit 23 of the management server 2 transmits replacement software in the SDR radio database 21 to the software radio 1 at the address in the SDR radio database 21. The transmission / reception unit 12 has a function of transmitting / receiving data, and at least a part of the functions is realized using software recorded in the recording unit 11. The transmission / reception port 13 receives software replacement software recorded in the recording unit 11 from the management server. The replacement unit 14 replaces the software recorded in the recording unit 11 with the replacement software received by the transmission / reception port 13. When the replacement unit 14 replaces software, the self-diagnosis unit 15 measures the transmission / reception characteristics of the transmission / reception unit 12, and diagnoses whether the measured transmission / reception characteristics satisfy a predetermined constraint.

  Even in this case, as in the first embodiment, it is possible to replace the software of the software defined radio even at a specific location.

  In this embodiment, the transmission / reception port 13 of the software defined radio 1 transmits the diagnosis result of the self-diagnosis unit 15 to the management server 2. The transmission / reception port 22 of the management server 2 receives the diagnosis result. The control unit 23 confirms the diagnosis result received by the transmission / reception port 22.

  In this case, it is possible to collectively manage confirmation of whether or not software replacement has been performed normally.

  There are a plurality of software defined radios 1. The SDR radio database 21 stores each address of the software radio 1 and the replacement software transmitted to the software radio in association with each other. The transmission / reception port 22 transmits each address in the SDR radio database 21 to replacement software corresponding to the address.

  In this case, different software can be transmitted for each software defined radio 1. Therefore, even if the software for replacement differs for each software defined radio 1, the software can be replaced.

  The function of the software defined radio 1 described above is to record a program for realizing the function on a computer-readable recording medium and cause the computer to read the program recorded on the recording medium. , May be executed.

  In each embodiment described above, the illustrated configuration is merely an example, and the present invention is not limited to the configuration.

  For example, the software defined radio 1 and the management server 2 are connected to each other via the Internet 100. However, in practice, the software wireless device 1 and the management server 2 may be connected to each other via a wired network other than the Internet 100, or a wireless LAN. May be connected to each other via a wireless network.

  Moreover, the transmission / reception part 12 may have a function of a communication means.

It is the block diagram which showed the structure of the software defined radio of 1st embodiment of this invention. It is a flowchart for demonstrating the operation example of a software defined radio. It is the block diagram which showed the software defined radio management system of 2nd embodiment of this invention. It is a flowchart for demonstrating the operation example of a software defined radio management system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Software defined radio 11 Recording part 12 Transmission / reception part 12a Transmission part 12b Reception part 12c Common part 13 Transmission / reception port 14 Replacement part 15 Self-diagnosis part 2 Management server 21 SDR radio | wireless machine database 22 Transmission / reception port 23 Control part

Claims (12)

A software defined radio that can be connected to the management server.
Recording means for recording software for transmitting and receiving data;
A transmission / reception unit that has a function of transmitting / receiving data, and that implements at least a part of the function using software recorded in the recording unit;
Communication means for receiving software replacement software recorded in the recording means from the management server;
Replacement means for replacing the software recorded in the recording means with the replacement software received by the communication means;
A software radio comprising: diagnostic means for measuring transmission / reception characteristics of the transmission / reception means and diagnosing whether or not the measured transmission / reception characteristics satisfy a predetermined constraint when the replacement means replaces the software; . The software defined radio according to claim 1,
The communication unit is a software defined radio that transmits a diagnosis result of the diagnosis unit to the management server. A software defined radio management system including a software defined radio and a management server connectable to the software defined radio,
The management server
Storage means for storing an address of the software defined radio and software for replacing transmission / reception software for the software defined radio to transmit and receive data;
Transmission means for transmitting replacement software in the storage means to a software defined radio at an address in the storage means,
The software defined radio is
Recording means for recording the software;
A transmission / reception unit that has a function of transmitting / receiving data, and that implements at least a part of the function using software recorded in the recording unit;
Communication means for receiving the replacement software from the management server;
Replacement means for replacing the software recorded in the recording means with the replacement software received by the communication means;
A software radio comprising: a diagnostic unit configured to measure a transmission / reception characteristic of the transmission / reception unit when the replacement unit replaces the software, and diagnose whether the measured transmission / reception characteristic satisfies a predetermined constraint; Machine management system. In the software defined radio management system according to claim 3,
The communication means transmits a diagnosis result of the diagnosis means to the management server;
The transmission means receives the diagnosis result from the software defined radio,
The software radio management system, wherein the management server includes control means for confirming a diagnosis result received by the transmission means. In the software defined radio management system according to claim 3 or 4,
There are a plurality of software defined radios,
The storage means stores each address of the software defined radio in association with replacement software transmitted to the software defined radio,
The software radio management system, wherein the transmission means transmits replacement software corresponding to the address to each software radio at the address in the storage means. A software radio diagnostic method including recording means for recording software for transmitting and receiving data,
Realizing at least a part of the function of transmitting and receiving data using software recorded in the recording means,
From the management server, the software for software replacement recorded in the recording means is received,
Replace the software recorded in the recording means with the received replacement software,
A diagnostic method for a software defined radio that measures transmission / reception characteristics of the transmission / reception means and diagnoses whether the measured transmission / reception characteristics satisfy a predetermined constraint. In the software radio diagnostic method according to claim 6,
A diagnostic method for a software defined radio, wherein a diagnostic result indicating whether the transmission / reception characteristics satisfy the constraint is transmitted to the management server. A software defined radio including recording means for recording software for transmitting and receiving data, an address of the software defined radio and software for replacement of software recorded by the recording means are associated with each other. A management server including a storage means for storing, and a software radio diagnosis method using a software radio management system including
The software defined radio has a function of transmitting and receiving data, and at least a part of the functions is realized by using software recorded in the recording unit,
The management server sends the replacement software in the storage means to the software defined radio at the address in the storage means;
The software defined radio receives the replacement software from the management server;
The software defined radio replaces the software recorded in the recording means with the received replacement software,
A software radio diagnosis method in which the software defined radio measures a transmission / reception characteristic of the transmission / reception means and diagnoses whether the measured transmission / reception characteristic satisfies a predetermined constraint. The diagnostic method for a software defined radio according to claim 8,
The software defined radio transmits a diagnosis result as to whether the transmission / reception characteristics satisfy the constraint to the management server,
The management server receives the diagnosis result from the software defined radio,
A software radio diagnosis method in which the management server confirms the received diagnosis result. The software radio diagnostic method according to claim 8 or 9,
There are a plurality of software defined radios,
The storage means stores each address of the software defined radio in association with replacement software transmitted to the software defined radio,
A software radio diagnosis method in which the management server transmits replacement software corresponding to the address to each software radio at the address in the storage means. To a computer connected to a recording means for recording software for transmitting and receiving data,
A procedure for realizing at least a part of functions for transmitting and receiving data using software recorded in the recording means;
A procedure for receiving software replacement software recorded in the recording means from the management server;
A procedure for replacing the received software for replacement with the software recorded in the recording means;
A program for measuring transmission / reception characteristics of the transmission / reception means and diagnosing whether or not the measured transmission / reception characteristics satisfy a predetermined constraint. The program according to claim 11,
A program that causes the computer to execute a procedure of transmitting a diagnosis result as to whether the transmission / reception characteristics satisfy the constraint to the management server.

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