JP5628780B2 - Radio system management apparatus and radio system management method - Google Patents

Description

  The present invention relates to a radio system management apparatus and a radio system management method for distributing software while ensuring that radio signal processing software operates reliably in software radio technology that performs digital radio signal processing by software.

  Currently, an increasing number of users are using the Internet via broadband lines using optical fibers, and such users often use a wireless LAN as a home network. In M2M (Machine-to-Machine) communication, which is communication with ubiquitous devices such as sensors and medical devices typified by smart grids, Bluetooth (registered trademark), Zigbee (registered trademark), and specific low power The use of wireless systems other than wireless LAN, such as wireless, is also being studied, and the diversity of wireless systems is progressing. Therefore, a technique for accommodating a plurality of wireless systems in a single base station in the future has been proposed (for example, see Patent Document 1).

  In Patent Document 1, the base station apparatus performs only transmission / reception of RF (Radio Frequency) signals, analog-digital conversion, and transmission of digital signals, and digital signal processing such as modulation / demodulation processing is placed on the center side, and high-speed processing is performed. By implementing the wireless signal processing apparatus having the capability, it is possible to realize a small size, low cost, and long life due to the single function of the base station apparatus.

  Also, digital radio signal processing such as modulation / demodulation processing is not performed in hardware such as conventional LSI (Large Scale Integration) and FPGA (Field-Programmable Gate Array), but in the base station apparatus or via a network. It has been proposed to implement processing by software radio technology on a general-purpose radio signal processing apparatus connected in this manner (see, for example, Patent Document 2). A wireless signal that cannot be processed in the base station apparatus is subjected to signal processing by a wireless signal processing apparatus on the network side, thereby reducing the load on the base station apparatus.

  Furthermore, when a wireless signal that has not been downloaded into the base station apparatus is received, it corresponds from a server that stores software for performing digital wireless signal processing (hereinafter referred to as wireless signal processing software) via the network. Downloading software makes it possible to support unsupported wireless systems. Thus, by realizing the wireless signal processing by software, there is an advantage that it is possible to easily cope with a plurality of wireless systems with one base station apparatus or to support unsupported wireless systems.

JP 2007-166278 A JP 2009-231903 A

  Currently, diversification of wireless systems is advancing, and it is expected to diversify further as the field of M2M communication expands in the future. Therefore, new wireless systems will be standardized or new in a form specialized for services. It is also assumed that a simple wireless system is adopted. However, since the wireless LAN base station apparatus constructed by LSI, FPGA, etc. is currently used, the base station apparatus is replaced or the base station apparatus is used in order to support the newly standardized wireless system. A new station device needs to be added.

  On the other hand, since the technique of Patent Document 2 implements digital radio signal processing using software radio technology, it corresponds to a newly standardized radio scheme by replacing the software in the base station apparatus. It is possible. However, the radio signal processing software developed for the newly standardized radio system satisfies the required specifications such as the response time of the radio system in the already installed base station equipment and network radio signal processing equipment. It is difficult to recognize in advance whether this is possible. Further, it is difficult to recognize in advance whether the wireless signal processing software is operating simultaneously with other wireless radio signal processing software and whether it is not illegally operating.

  Usually, the hardware specifications of the base station device and the wireless signal processing device on the network side are designed on the condition that the existing wireless signal processing software operates, so when downloading the wireless signal processing software whose required performance is unknown, Considering the influence on other software, there is a problem that it is not possible to effectively use the radio signal processing device, such as the need to install another base station device or radio signal processing.

  The present invention has been made in view of such circumstances, and a wireless system management apparatus and a wireless system management method capable of estimating processing performance for new wireless signal processing software and ensuring required performance and safety The purpose is to provide.

  The present invention is a wireless system management device that distributes software for performing wireless communication processing to a wireless signal processing device, and is provided in the wireless communication processing device that receives new software from outside and executes the software. A performance estimation unit for estimating the processing performance to be processed, and a certification unit for determining whether the received software is software to be registered based on whether the processing performance estimated by the performance estimation unit satisfies a predetermined condition. And storage means for storing the software authorized by the authorization means; and when receiving a software distribution request from the wireless signal processing device, the software stored in the storage means is read out, and the software distribution request Distribution means for transmitting to the wireless signal processing apparatus that has transmitted The features.

  In the present invention, the certifying means includes the software and the processing performance that the wireless signal processing device that executes the software should have, the current CPU allocation information of the wireless signal processing device that has transmitted the software distribution request, and The CPU assignment on the wireless signal processing device is determined based on the downloaded software information, and the software and the CPU assignment are transmitted to the wireless signal processing device.

  In the present invention, the distribution means includes processing performance that the software and the wireless signal processing device that executes the software should have, current CPU allocation information of the wireless signal processing device that has transmitted the software distribution request, and The CPU assignment on the wireless signal processing device is determined based on the downloaded software information, and the software and the CPU assignment are transmitted to the wireless signal processing device.

  The present invention provides a second performance estimating means for estimating a second processing performance when the wireless communication processing by the software and a processing of a higher-order protocol are combined, and a second processing estimated by the second performance estimating means. The system further comprises an authorization unit for authorizing whether the received software is software to be registered based on whether the performance satisfies a predetermined condition.

  The present invention further includes means for generating and outputting a spectrum of a signal generated by the software and information necessary for technical conformity certification in a frequency band in which a radio system corresponding to the software operates. To do.

  The present invention is a wireless system management method in a wireless system management apparatus that distributes software for performing wireless communication processing to a wireless signal processing apparatus, wherein the wireless communication process receives new software from outside and executes the software Whether the received software is to be registered based on a performance estimation step for estimating the processing performance that the apparatus should have, and whether or not the processing performance estimated by the performance estimation step satisfies a predetermined condition An authorization step for authorizing, a storage step for storing the software authorized in the authorization step in a storage means, and when receiving a software distribution request from the wireless signal processing device, the software is read from the storage means, The wireless signal processing that transmitted the software distribution request And having a distribution step of transmitting to the device.

  According to the present invention, it is ensured that the wireless signal processing software operates normally by estimating the processing performance such as CPU performance and memory usage necessary for processing of the wireless signal processing software corresponding to the new wireless system. By guaranteeing the operation when downloaded to the wireless signal processing device, it is possible to easily add a new wireless system.

It is a block diagram which shows the structure of one Embodiment of this invention. It is a sequence diagram which shows operation | movement of the apparatus shown in FIG. It is a flowchart which shows the detailed operation | movement of the radio | wireless signal processing software authorization process shown in FIG. It is a block diagram which shows the structure of the modification of embodiment shown in FIG. It is a block diagram which shows the structure of the modification of embodiment shown in FIG.

  Hereinafter, a radio management apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the embodiment. In this figure, reference numeral 1 denotes a radio signal processing apparatus on which radio signal processing software operates. Reference numeral 2 denotes a radio system management apparatus that manages radio signal processing software. Reference numerals 41 and 42 are software servers that provide wireless signal processing software. Note that the wireless signal processing device 1 may be connected via a base station device or a network placed in the house.

  The radio signal processing device 1 includes a software request unit 11, a software load unit 12, and a software acquisition unit 13. The wireless system management device 2 includes a software DL request accepting unit 21, a software searching unit 22, a software allocation evaluating unit 23, a software transmitting unit 24, a software DL completed information managing unit 25, an external information providing unit 26, The software reception unit 27, the software processing performance estimation unit 28, the software authorization unit 29, and the software management unit 30 are included.

  Next, operations of the wireless signal processing device 1, the wireless method management device 2, and the software servers 41 and 42 shown in FIG. 1 will be described with reference to FIG. FIG. 2 is a sequence diagram showing operations of the wireless signal processing device 1, the wireless method management device 2, and the software servers 41 and 42 shown in FIG. As a precondition, the wireless signal processing software corresponding to one wireless method is created by a third party. The wireless signal processing software can be created by providing hardware specifications of the wireless signal processing device 1, information on basic software such as an OS, and information on software development environments such as tools and libraries for software development. . Radio signal processing software created by a third party is transmitted from the software servers 41 and 42.

  First, the external information providing unit 26 presents the software development environment information to the software servers 41 and 42 (step S1). The third party that has received this creates radio signal processing software (step S2), and transmits (registers) the created radio signal processing software from the software server 41 to the radio system management device 2 (step S3). . The software reception unit 27 receives the wireless signal processing software transmitted from the software server 41 (step S4). At this time, a wireless system corresponding to the wireless signal processing software is specified, and information necessary for performing software authorization is acquired. Note that the information transmitted from the software server 41 may be a wireless system specification document, service request conditions, etc. in addition to the wireless signal processing software. The software reception unit 27 transfers the received radio signal processing software to the software processing performance estimation unit 28.

  Next, the software processing performance estimation unit 28 includes the performance of the received wireless signal processing software, for example, the CPU performance necessary to satisfy the required value of the processing delay time of the corresponding wireless system (including whether or not the required value is satisfied). ) Estimate the memory amount and output the result information to the software authorization unit 29 (step S5). Then, the software authorization unit 29 performs authorization processing of the radio signal processing software using the estimation result information from the software processing performance estimation unit 28 (step S6). The certified radio signal processing software is stored and managed in the software management unit 30 (step S7).

  Next, the software request unit 11 determines the wireless method from the received signal or the like, and if the wireless signal processing software corresponding to the wireless method has not been downloaded to the wireless signal processing device 1, the software request unit 11 downloads the wireless signal processing software ( DL) is transmitted to the radio system management apparatus (step S8). The software DL request reception unit 21 receives a software DL request signal transmitted from the wireless signal processing device 1 (step S9). The information transmitted here is the wireless system identification information for identifying the ID information of the wireless signal processing device 1 and the detected wireless system. As other software download triggers, a request received from an external terminal such as the software server 41 or 42 or an unknown received signal is transmitted from the wireless signal processing 1, and the wireless method is managed in the wireless method management apparatus 2. May be determined.

  Next, the software search unit 22 searches the software management unit 30 for the corresponding radio signal processing software from the requested radio system identification information, and the corresponding radio signal processing software, the necessary CPU performance, and the memory usage. Get information such as. Information about the acquired wireless signal processing software and necessary CPU performance, memory usage, etc. is sent to the software allocation evaluation unit 23, and further, current CPU allocation information of the wireless signal processing device 1 that performs the download, and information about the downloaded software Is acquired from the software DL-completed information management unit 25. Then, the software allocation evaluation unit 23 operates safely on the radio signal processing device 1 from the necessary CPU performance of the acquired radio signal processing software, the current CPU allocation information of the radio signal processing device 1, and the downloaded software information. CPU allocation is determined (step S10).

  Next, the software transmission unit 24 reads the target wireless signal processing software from the software management unit 30 and transmits the read wireless signal processing software and CPU allocation information to the wireless signal processing device 1. In response to this, the software acquisition unit 13 receives (downloads) the radio signal processing software and CPU allocation information transmitted from the radio system management device 2 (step S11). The software loading unit 12 loads the wireless signal processing software onto the CPU of the wireless communication processing device 1 in accordance with the received CPU assignment information of the wireless signal processing software (step S12). On the other hand, the software DL completed information management unit 25 updates the software downloaded information using the result of the transmission operation by the software transmission unit 24 (step S13).

  Next, the details of the operation of the software authorization process (step S6 shown in FIG. 2) in the software authorization unit 29 shown in FIG. 1 will be described with reference to FIG. FIG. 3 is a flowchart showing the software authorization processing operation of the software authorization unit 29 shown in FIG. The software authorization unit 29 determines whether the response time estimated by the software processing performance estimation unit 28 satisfies the requirements of the wireless system (step S21), or the CPU usage rate (load) is the specified value (average) of the wireless signal processing device CPU resources that can be used in a typical radio signal processing device) (step S22), whether the memory usage satisfies the specified value of the radio signal processing device to be operated (step S23), radio wave law It is determined whether unnecessary radio waves that violate the above are transmitted (step S24), whether information is leaked to the outside through an incorrect route (step S25), and if these conditions are satisfied, the target radio signal processing If the software is certified (step S26) and one condition is not satisfied, the radio signal processing software cannot be certified (step S26). As-flops S27), and notifies the software server 41 and 42. The certified radio signal processing software is managed by the software management unit 30 together with information such as necessary CPU performance and memory usage. As a result, it is possible to ensure that the newly registered radio signal processing software operates normally.

  In addition, instead of estimating the processing performance in the software processing estimation unit 28, when the wireless signal processing software is transmitted from the software servers 41 and 42, the CPU performance and the memory usage amount are reported together, and the information is used for authorization. May be performed. Further, an emulator for estimating the processing performance may be provided in the external information providing unit 26, and the processing performance may be estimated in the software servers 41 and 42, and the result may be reported together with the wireless signal processing software.

  Next, with reference to FIG. 4, the modification of the radio | wireless system management apparatus 2 shown in FIG. 1 is demonstrated. FIG. 4 is a block diagram showing a configuration of a modified example of the radio system management apparatus 2 shown in FIG. In this figure, the same parts as those in the apparatus shown in FIG. The wireless system management device 2 shown in FIG. 4 is different from the device shown in FIG. 1 in that a second software processing performance estimation unit 31 is provided.

  For the radio signal processing software certified by the software certification unit 29, the second software processing performance estimation unit 31 evaluates the processing performance when the radio signal processing software and the upper protocol are combined. Whether the processing time of the radio signal processing software satisfies the required conditions when it is combined with the upper protocol, or the required conditions such as the delay time on the upper protocol side can be satisfied, and the CPU performance and memory usage satisfy the specified values To evaluate. Based on the evaluation result, it is determined whether or not the target radio signal processing software is stored in the software management unit 30. As the upper level protocol, a video transmission system that is assumed to require a lot of arithmetic processing, an IP phone that is expected to have severe processing time requirements, and the like are used. Further, the processing performance may be estimated by combining a plurality of radio signal processing software.

  Next, with reference to FIG. 5, the modification of the radio | wireless system management apparatus 2 shown in FIG. 4 is demonstrated. FIG. 5 is a block diagram showing a configuration of a modified example of the radio system management apparatus 2 shown in FIG. In this figure, the same parts as those in the apparatus shown in FIG. The wireless system management device 2 shown in FIG. 5 is different from the device shown in FIG. 4 in that a technical conformity certification agency 32 is provided.

  For the radio signal processing software of the radio system that needs to be newly certified as the technical conformity certification among the radio signal processing software certified by the software certification unit 29, the technical conformity certification agency 32 obtains the technical conformity certification. Information is acquired and output to the outside. The technology conformity certification agency 32 holds transmission output information in each frequency band of the base station apparatus serving as a reference and transmission circuit information such as a filter as information for obtaining technology conformity certification. Information on the frequency band in which the radio system that needs to be certified for technology conformity is obtained from the radio system specifications and the like, and the transmission output information and transmission circuit information of the frequency band that is held are acquired. A desired spectrum is calculated from the radio signal processing software, and spectrum information is created by combining the acquired transmission circuit information. The created spectrum information and the acquired transmission output information are output as technical conformity certification information.

  In this way, in the wireless method management device that distributes one wireless signal processing software corresponding to one wireless method to each wireless signal processing device 1, new wireless signal processing software is registered in the wireless method management device 2. When determining the validity of the registration. Specifically, the processing delay time when the corresponding wireless signal is processed by the target wireless signal processing software can satisfy the processing delay time defined in the target wireless method, or an unnecessary out-of-band signal It is determined whether the radio signal processing software is not appropriate, and if it is determined that the radio signal processing software is not appropriate, registration of the radio signal processing software is rejected. As described above, when the software is registered, by checking the security of the software, it is possible to avoid the unstable operation of the radio signal processing device 1 caused by the distribution of the software with poor quality.

  In addition, in the suitability determination, information such as CPU resources and memory required when the wireless signal processing software is loaded into the wireless signal processing device 1 is managed as additional information. On the other hand, when receiving a request for loading software from the wireless signal processing device 1, the wireless management device 2 adds additional information such as CPU resources and memory consumed when the target wireless signal processing software is loaded. To determine whether to load to the wireless signal processing device 1 as compared with the CPU resource or memory of the wireless system management device 2. Thus, before loading the wireless signal processing software into the wireless signal processing device 1, by checking whether or not it can operate stably, the wireless system management device 2 that does not satisfy the required specifications of the wireless signal processing software can be obtained. Unstable operation of the wireless signal processing device 1 caused by loading can be avoided.

  With such a configuration, not only the radio signal processing software that you already own, but also the radio signal processing software that corresponds to the newly developed radio system, you can verify the processing performance, verify the operation, It can be confirmed that the wireless signal processing software operates normally satisfying the required performance and safety. For this reason, it is possible to download new radio signal processing software to the operating base station apparatus or the radio signal processing apparatus on the network side so that it can operate normally. A new radio system can be added while using it.

  Furthermore, since it is software processing, it is conceivable that the radio signal processing software and the higher level protocol coexist in the same radio signal processing device, but coexist by evaluating the processing performance by combining the radio signal processing software and the higher level protocol. Even in this case, it can be confirmed that it operates normally on the existing radio signal processing apparatus. In addition, newly developed wireless systems require new technical conformity certification, but it is possible to easily obtain technical conformity certification by performing the acquisition of necessary data. It becomes.

  As described above, in the flexible wireless system, the wireless system used by the wireless terminal is detected, and the wireless system management apparatus loads the software corresponding to the wireless system onto the wireless signal processing apparatus to perform signal processing. Here, when the software is created by a third party, there is a problem in that it is not known whether or not the corresponding wireless signal can be properly processed by the software. In addition, when distributing the software, there is also a problem that it is not known whether or not the wireless signal processing device that requests the software can load the software.

  When receiving the input of new software, the wireless management device described above determines whether or not the corresponding wireless signal can be processed by the software, and registers the software when it is determined that the software can be processed. . Specifically, the processing delay time, out-of-band emission, and the like when a radio signal is processed by the software are calculated, and it is determined whether or not a condition defined in the radio system is satisfied. With this configuration, even software created by a third party can be used after confirming its safety. In addition, when receiving a distribution request for the software, by comparing the calculation resource of the wireless signal processing apparatus that has transmitted the distribution request with the calculation resource occupied by the software, and determining whether or not it can be loaded, It is possible to avoid distributing software that cannot be processed by the wireless signal processing device.

  1 is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into a computer system and executed, thereby executing a wireless management process. May be performed. Here, the “computer system” includes an OS and hardware such as peripheral devices. The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Further, the “computer-readable recording medium” refers to a volatile memory (RAM) in a computer system that becomes a server or a client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. In addition, those holding programs for a certain period of time are also included.

  The program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line. The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, what is called a difference file (difference program) may be sufficient.

  As mentioned above, although embodiment of this invention has been described with reference to drawings, the said embodiment is only the illustration of this invention, and it is clear that this invention is not limited to the said embodiment. is there. Accordingly, additions, omissions, substitutions, and other modifications of components may be made without departing from the spirit and scope of the present invention.

  In software defined radio technology in which digital radio signal processing is implemented by software, it can be applied to applications where it is essential to ensure that radio signal processing software operates reliably.

  DESCRIPTION OF SYMBOLS 1 ... Radio signal processing apparatus, 11 ... Software request part, 12 ... Software load part, 13 ... Software acquisition part, 2 ... Wireless system management apparatus, 21 ... Software DL request part , 22 ... Software search unit, 23 ... Software allocation evaluation unit, 24 ... Software transmission unit, 25 ... Software DL completed information management unit, 26 ... External information provision unit, 27 ... Software accepting unit 28 ... Software processing performance estimating unit 29 ... Software certification unit 30 ... Software management unit 31 ... Second software processing performance estimation unit 32 ... Technical conformity certification agency Part, 41, 42 ... software server

Claims (5)

A wireless management device that distributes software for performing wireless communication processing to a wireless signal processing device,
Performance estimation means for receiving new software from outside and estimating the processing performance of the wireless signal processing apparatus that executes the software;
Certifying means for certifying whether the received software is software to be registered based on whether the processing performance estimated by the performance estimating means satisfies a predetermined condition;
Storage means for storing the software certified by the certification means;
A distribution unit that reads out the software stored in the storage unit when a software distribution request is received from the wireless signal processing device and transmits the software distribution request to the wireless signal processing device that has transmitted the software distribution request; Huh,
The distribution means includes processing performance to be included in the software and the wireless signal processing device that executes the software, current CPU allocation information and downloaded software information of the wireless signal processing device that has transmitted the software distribution request. A wireless system management device that determines a CPU assignment on the wireless signal processing device based on the information and transmits the software and the CPU assignment to the wireless signal processing device.   When the signal processing is performed by the software in the wireless signal processing device, the authorization unit satisfies a required value of a processing delay time required for a wireless method corresponding to the software, or a CPU usage rate is a specified value. If the software does not satisfy any of the following conditions, the memory does not exceed the specified value, the radio wave that violates the Radio Law is not transmitted, or the information is not leaked to the outside through an incorrect route: The wireless system management apparatus according to claim 1, wherein the wireless system management apparatus rejects the authorization of the system. Second performance estimating means for estimating second processing performance when the wireless communication processing by the software and the processing of the upper protocol are combined;
Authorization means for authorizing whether the received software is software to be registered based on whether the second processing performance estimated by the second performance estimation means satisfies a predetermined condition;
The wireless system management device according to claim 1, further comprising:   2. The apparatus according to claim 1, further comprising means for generating and outputting information necessary for technical conformity certification in a frequency band in which a radio spectrum corresponding to the software operates and a spectrum of the signal generated by the software. The radio system management apparatus according to 1. A wireless method management method in a wireless method management device that distributes software for performing wireless communication processing to a wireless signal processing device,
A performance estimation step of receiving new software from outside and estimating the processing performance of the wireless signal processing apparatus that executes the software;
An authorization step for authorizing whether the received software is software to be registered, based on whether the processing performance estimated by the performance estimation step satisfies a predetermined condition;
A storage step of storing in the storage means the software certified by the certification step;
Wherein the radio signal processing unit when receiving a software distribution request, reads the software from the storage means, possess a distribution step of transmitting to the radio signal processing apparatus which has transmitted the software distribution request,
In the distribution step, the software and the processing performance that the wireless signal processing device executing the software should have, the current CPU allocation information and the downloaded software information of the wireless signal processing device that transmitted the software distribution request And determining the CPU allocation on the radio signal processing device and transmitting the software and the CPU allocation to the radio signal processing device .

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