JP5600093B2 - Wireless gateway system - Google Patents

Description

  The present invention relates to a technique for performing wireless communication using a plurality of wireless systems.

  In recent years, wireless communication from terminals such as public homes, offices, train stations, and public hotspot services at airports can be used as access, and the Internet can be used in close proximity via broadband connections typified by optical lines. The environment is spreading. In particular, many recent broadband routers have a built-in wireless LAN communication function, and a LAN can be easily constructed at home or in an office.

  On the other hand, in addition to high-speed access represented by wireless LAN, security management using fire detection sensors, human sensors, etc., such as radio tags and other items using radio frequency identification (RF-ID), personnel management, etc. In addition, a large number of small wireless devices have come to be used, and in the future, it is easily assumed that various wireless communication methods will be used in homes and offices.

  Under such circumstances, in wireless communication that is difficult when signal processing delay is large, such as wireless LAN or high-speed wireless communication represented by WiMAX (Worldwide Interoperability for Microwave Access), A device that performs signal processing according to the wireless communication method to be used, such as signal processing by a signal processing server in wireless communication that is tolerant of processing delay, such as wireless tags and sensors. A technique for adaptively switching has been proposed (for example, Patent Document 1).

  FIG. 10 is a block diagram showing an outline of the overall configuration of a wireless gateway system according to the prior art (Patent Document 1). The wireless gateway system includes a wireless gateway device 60, a program server 300, and a signal processing server 70 connected via a network 200. The wireless gateway device 60 includes a wireless communication terminal 50 (hereinafter referred to as a wireless tag 10, a sensor 20, a wireless LAN terminal 30, and other wireless terminals 40) including the wireless tag 10, the sensor 20, the wireless LAN terminal 30, and other wireless terminals 40. Wireless signals are transmitted to and received from the wireless communication terminal 50.

  The signal processing server 70 performs signal processing necessary for transmission / reception of a radio signal based on a radio communication scheme of communication performed between the radio gateway device 60 and the radio communication terminal 50. The program server 300 transmits necessary signals to the wireless gateway device 60 and the signal processing server 70 via the network 200 based on the wireless communication method of communication performed between the wireless gateway device 60 and the wireless communication terminal 50. A processing program is provided.

  In the technique disclosed in Patent Document 1, the wireless gateway device 60 itself determines whether to perform signal processing by the own device or the signal processing server 70 based on the detected wireless communication method, and switches between them. . At this time, software for performing signal processing used in the wireless gateway device 60 is downloaded from the program server 300 on the network 200 as appropriate, and the digital signal processing unit 61 of the wireless gateway device 60 and the digital signal processing of the signal processing server 70 are performed. The software of the unit 71 is rewritten.

  The system configuration using such a wireless gateway device 60 can be assumed as a network that mediates a wide area network such as the Internet or a WAN (Wide Area Network), but is not limited to this. In a LAN environment represented by a home network or the like, a configuration in which a personal computer (PC) is used as a signal processing server, or a device such as a home gateway (HGW) or a service gateway (SGW) is also possible.

  Currently, wireless gateway devices represented by broadband routers for network connection and base stations and wireless gateway devices for various wireless communication terminal devices used in homes and offices are developed and developed as different devices. I have done it.

  Therefore, in order to receive services of a plurality of wireless communication systems at the same time, it is necessary to install a plurality of different wireless gateway devices 60, and the installation cost is a problem. Further, in order to receive a new wireless communication system service, it is necessary to install and update new wireless gateway devices 60 one after another.

  Here, according to the configuration using the technique of Patent Document 1, the wireless gateway device 60 is switched by switching a device that performs signal processing according to a wireless communication method to be used, or by downloading and rewriting software that performs signal processing. Can be expected to further reduce costs associated with the installation and renewal of

JP 2009-231903 A

  However, since the transmission band of the signal output from the wireless gateway device 60 differs depending on the wireless communication method, the function switching as described above is not necessarily performed depending on the communication capacity between the wireless gateway device 60 and the signal processing server 70. There is a problem.

For example, in order to support a plurality of wireless communication systems over a wide frequency band such as the 2.4 GHz ISM (Industry-Science-Medical) band, the signal before demodulation is transmitted to the signal processing server 70. A network transmission band proportional to the corresponding frequency bandwidth is required. This poses a problem of squeezing the home access network bandwidth and increasing the cost.
In particular, intermittent packet communication and only a part of the frequency are generally used in a radio wave environment such as home, and this is necessary for a method that occupies a fixed network transmission band in terms of time and frequency. Since information in a section where no information exists is also transmitted, there is a lot of waste.

  Furthermore, the required characteristics required for wireless communication, such as the dynamic range of the A / D conversion portion, the required number of bits, and the sampling frequency, differ depending on the type of wireless communication system. In order to simply cope with any wireless communication system, there is a problem that a high-performance apparatus performance is required and the network transmission band is further pressed.

  In view of the above circumstances, an object of the present invention is to provide a technique that enables a required bandwidth of a network transmission path to be controlled while ensuring required transmission characteristics in accordance with a wireless communication method to be used.

  One aspect of the present invention provides a wireless terminal device including a first communication unit that performs wireless signal communication, a wireless gateway device that performs wireless signal communication with the wireless terminal device, and the wireless gateway device. In a wireless gateway system comprising a signal processing server connected via a network and performing wireless signal processing, the wireless gateway device includes a first variable signal processing unit capable of rewriting a signal processing program, A first control unit that controls a transmission band between the signal processing server, the signal processing server, a second variable signal processing unit capable of rewriting the signal processing program, and the wireless gateway A second control unit for controlling a transmission band between the device and the device, wherein the first control unit and the second control unit are the wireless gates. A resource size that can be implemented in the first variable signal processing unit and the second variable signal processing unit based on a wireless communication method detected by the gateway device or the signal processing server; and the wireless gateway device; A wireless communication function block for the first variable signal processing unit and the second variable signal processing unit using a network transmission band that can be used with the signal processing server and actual network transmission delay information Wireless gateway system characterized by sorting

  One aspect of the present invention is the above-described wireless gateway system, further comprising a wireless signal recording server connected to the wireless gateway device via a network, wherein the wireless signal recording server transmits or A radio signal recording unit that records radio signal information that is information of a received radio signal and radio communication history information that represents a history of radio communication by the radio gateway device, the first control unit or the second control The unit further controls the network transmission band by further using the radio signal information or the radio communication history information recorded in the radio signal recording server.

  One aspect of the present invention is the above wireless gateway system, wherein the first control unit acquires a resource that can be implemented in the first variable signal processing unit, and the second control unit By acquiring resources that can be implemented in the second variable signal processing unit, the first control unit and the second control unit communicate with each other between the wireless gateway device and the signal processing server. Obtaining a usable transmission band and a transmission delay time, performing a function division arrangement of the wireless communication function based on the resource information, and calculating a required network transmission band and an allowable network delay time calculated as a result of the function division arrangement By comparing and evaluating the available network transmission band and the actual network transmission delay time, it is possible to establish a functionally divided arrangement of wireless communication functions. Characterized by disconnection.

  One aspect of the present invention is the above wireless gateway system, in which the wireless gateway device performs communication of the wireless signal with the wireless terminal device, and signal characteristics of the wireless signal. When the radio signal is a received signal when the radio signal is a received signal, a digitization processing unit that converts an analog radio signal into a digital signal sequence, and when the radio signal is a transmission signal, An analogization processing unit that converts a digital signal sequence into an analog wireless signal; and a third communication unit that communicates with the signal processing server or the wireless signal recording server via the network. One variable signal processing unit performs digital signal processing accompanying communication of the radio signal and performs reception signal processing of the reception signal, and transmission of the transmission signal. Characterized in that it comprises a first transmission signal processing unit that performs signal processing, the.

  One aspect of the present invention is the above wireless gateway system, wherein the signal processing server communicates with the wireless gateway device or the wireless signal recording server via the network, An upper communication control unit for inputting / outputting transmission / reception data based on a processing result of the second variable signal processing unit, wherein the second variable signal processing unit is a digital signal associated with communication of the radio signal. And a second reception signal processing unit that performs reception signal processing of the reception signal and a second transmission signal processing unit that performs transmission signal processing of the transmission signal.

  One aspect of the present invention is the above wireless gateway system, wherein the wireless signal recording server communicates with the wireless gateway device or the signal processing server via the network, A radio that records a radio signal in the vicinity of the radio gateway device acquired by the second communication unit of the radio gateway device and radio communication information exchanged between the radio terminal device and the radio gateway device And a signal recording unit.

  One aspect of the present invention is the above-described wireless gateway system, wherein the first reception signal processing unit extracts a signal of a reception signal time interval from the wireless signal, and the reception signal time. A time-frequency converter that performs time-frequency conversion of a signal in a section, a signal frequency section extractor that extracts a signal in a received signal frequency section from the signal after time-frequency conversion, and a received signal from which the time section and the frequency section are extracted And a data compression unit that performs data compression.

  One aspect of the present invention is the above wireless gateway system, in which the second reception signal processing unit decompresses the data output from the first reception signal processing unit, and a decompression signal A signal frequency interval complementing unit that complements a signal waveform other than the received signal frequency interval, a frequency time converting unit that performs frequency time conversion of the signal supplemented by the signal frequency interval interpolation unit, A signal time interval complementing unit that complements a signal waveform other than the reception signal time interval with respect to the signal, and a synchronization / demodulation unit that synchronizes and demodulates the received signal with the time interval and the frequency interval complemented It is characterized by that.

  According to the present invention, it is possible to control the required bandwidth of the network transmission line while ensuring the required transmission characteristics according to the wireless communication method to be used.

1 is a block diagram showing an outline of the overall configuration of a wireless gateway system according to a first embodiment of the present invention. It is a block diagram which shows the structural example of the wireless gateway apparatus 100 of the wireless gateway system by 1st Embodiment. It is a block diagram which shows the structural example of the signal processing server 400 of the radio | wireless gateway system by 1st Embodiment. It is a block diagram which shows the structural example of the wireless signal recording server 500 of the wireless gateway system by 1st Embodiment. 5 is a flowchart for explaining an operation between a control unit 113 of the wireless gateway device 100 and a control unit 413 of the signal processing server 400 according to the first embodiment. It is a block diagram which shows the structure of each part of the radio | wireless gateway system by 2nd Embodiment. It is a block diagram which shows the structure of each part of the radio | wireless gateway system by 2nd Embodiment. It is a block diagram which shows the structure of each part of the radio | wireless gateway system by 2nd Embodiment. It is a block diagram which shows the structure by 3rd Embodiment. It is a block diagram which shows the outline of the whole structure of the wireless gateway system by a prior art (patent document 1).

Hereinafter, an embodiment of the present invention will be described.
[First Embodiment]
First, a first embodiment of the present invention will be described. FIG. 1 is a block diagram showing an outline of the overall configuration of the wireless gateway system according to the first embodiment of the present invention. The wireless gateway system includes a wireless gateway device 100, a program server 300, a signal processing server 400, and a wireless signal recording server 500 connected via a network 200.

  The network 200 is configured by using the Internet or a WAN (Wide Area Network), a LAN (Local Area Network), a dedicated line network, a telephone network, or the like constituting the Internet. The wireless gateway device 100 is installed as a wireless base station including a radio frequency circuit. For example, the wireless gateway device 100 transmits and receives wireless signals to and from the wireless tag 10, the sensor 20, the wireless LAN terminal 30, and other wireless terminals 40. In the following description, the term “wireless communication terminal 50” is used as a general term for the wireless tag 10, the sensor 20, the wireless LAN terminal 30, and other wireless terminals 40.

  Signal processing necessary for transmission / reception of wireless signals is performed using the wireless gateway device 100, the previous signal processing server 400 via the network 200, or both. Radio signal information transmitted and received or collected via the radio gateway device 100 and its history are recorded in the radio signal recording server 500 via the network 200.

  The program server 300 performs necessary signal processing on the wireless gateway device 100 and the signal processing server 400 via the network 200 based on a wireless communication scheme of communication performed between the wireless gateway device 100 and the wireless communication terminal 50. Provide a program. The signal processing server 400 performs signal processing necessary for transmission / reception of a wireless signal based on a wireless communication method performed between the wireless gateway device 100 and the wireless communication terminal 50.

  Specifically, reception data obtained by demodulating a wireless signal transmitted from the wireless communication terminal 50 via the wireless gateway device 100 and the network 200 is output, and conversely, wirelessly via the network 200 and the wireless gateway device 100. Transmission data for modulating a radio signal to be transmitted to the communication terminal 50 is input.

  The wireless signal recording server 500 records the wireless signal information transmitted / received or collected via the wireless gateway device 100 via the network 200, and their past history. The recorded radio signal information includes the following information. A wireless communication method exchanged between the wireless gateway device 100 and the wireless communication terminal 50 in the past. History information such as communication time. Information collected via the wireless gateway device 100 (frequency signal waveform such as frequency spectrum signal waveform, wireless signal waveform, frequency band, occupied frequency bandwidth, wireless interference signal different from a desired wireless communication signal, noise signal, etc.).

According to the overall configuration of the first embodiment described above, the wireless gateway system has the following effects.
In 1st Embodiment, compared with the structure of the prior art shown in FIG. 10, the point provided with the radio | wireless gateway apparatus 100 and the signal processing server 400 as a component is the same. However, the function sharing of signal processing among them is different. The configuration of the prior art shown in FIG. 10 is a configuration in which a device that performs digital signal processing is switched according to a communication method. On the other hand, in the first embodiment shown in FIG. 1, in the sharing of the wireless gateway device 100 and the signal processing server 400, the functions are distributed and coordinated between the devices based on the communication capacity between them. Thus, the first embodiment aims to reduce the network transmission band.

  Specifically, when software corresponding to a new wireless method is loaded into the wireless gateway device 100, the wireless gateway device 100 has resources necessary for processing the rest of its own signal processing resources and the wireless method. And compare. When the former is large, the wireless gateway device 100 loads all functions. On the other hand, when the latter is large, the wireless gateway device 100 performs function distribution based on the communication capacity with the signal processing server 400 and the allowable delay.

  That is, the functional blocks are reduced in descending order of processing, and the required transmission band and required delay when the output signal when the processing is performed are calculated. Then, the calculated value is compared with the communication capacity and allowable delay acquired in advance. A combination satisfying that the required resource is smaller than the remaining signal processing resources, the required transmission band is equal to or less than the communication capacity, and the required delay is smaller than the allowable delay is loaded as a function of the wireless gateway device 100, and the remaining Is loaded by the signal processing server 400.

  With such a configuration, it is possible to assign functions between the wireless gateway device 100 and the signal processing server 400 so as to avoid traffic exceeding the communication capacity between the wireless gateway device 100 and the signal processing server 400.

  Furthermore, in the first embodiment, in order to determine the wireless communication method, not only real-time processing in the wireless gateway device 100 but also past wireless signal history and communication history recorded in the wireless signal recording server 500 are stored. Can be used. Thereby, for example, a radio signal arriving at the radio gateway apparatus 100 or a radio communication method to be used can be estimated in advance with high accuracy. Further, the network occupied bandwidth can be adaptively controlled based on the past transmission quality history in the wireless section and the network section.

Next, configuration examples of the wireless gateway system in the first embodiment will be sequentially described.
FIG. 2 is a block diagram illustrating a configuration example of the wireless gateway device 100 of the wireless gateway system according to the first embodiment. The wireless gateway device 100 includes a CPU (Central Processing Unit), a memory, an auxiliary storage device, and the like connected by a bus, and executes a program. By executing the program, the wireless gateway device 100 includes a wireless unit / analog unit 101, a wireless signal characteristic acquisition unit 102, an A / D (Analog to Digital) conversion unit 103, a D / A (Digital to Analog) conversion unit 104, a digital It functions as an apparatus including the signal processing unit 110 and the communication processing unit 121. Further, the digital signal processing unit 110 includes a reception signal processing (first processing) unit 111, a transmission signal processing (second processing) unit 112, a control unit 113, and a method determination unit 114. Note that all or part of the functions of the wireless gateway device 100 may be realized using hardware such as an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA). . The program may be recorded on a computer-readable recording medium. The computer-readable recording medium is, for example, a portable medium such as a flexible disk, a magneto-optical disk, a ROM, a CD-ROM, or a storage device such as a hard disk built in the computer system. The program may be transmitted / received via a telecommunication line.

  The radio unit / analog unit 101 receives an analog radio frequency signal transmitted from the radio communication terminal 50 and outputs the received radio main signal to the A / D conversion unit 103. Further, a signal necessary for acquiring analog wireless signal characteristics such as a used frequency band, a frequency bandwidth, and a wireless signal amplitude is output from the received signal to the wireless signal characteristic acquiring unit 102 and acquired by the wireless signal characteristic acquiring unit 102 Based on the radio signal characteristics, AGC (Auto-Gain-Control) and filter processing of the used frequency band are performed and output to the A / D converter 103. Conversely, the radio unit / analog unit 101 receives the transmission radio main signal output from the D / A conversion unit 104, converts it to a radio frequency signal, and transmits the radio frequency signal to the radio communication terminal 50.

The radio signal characteristic acquisition unit 102 is based on a signal necessary for radio signal characteristic acquisition input from the radio unit / analog unit 101, a frequency band processed by the radio unit / analog unit 101, a frequency width, a radio signal amplitude, etc. And the information is output to the control unit 113.
The A / D conversion unit 103 receives the analog received radio main signal input from the radio unit / analog unit 101 in accordance with instruction information such as the number of A / D conversion bits, dynamic range, and sampling frequency input from the control unit 113. The digital signal is converted into a digital received radio main signal and output to the received signal processing (first processing) unit 111 and the method determining unit 114.

  The D / A conversion unit 104 uses the digital transmission radio main signal input from the transmission signal processing (second processing) unit 112 as instruction information such as the number of D / A conversion bits input from the control unit 113 and a dynamic range. Accordingly, it is converted into an analog transmission radio main signal and output to the radio unit / analog unit 101.

  The reception signal processing (first processing) unit 111 performs radio until the received data is demodulated based on the input control signal from the control unit 113 with respect to the digital radio reception main signal input from the A / D conversion unit 103. Of the synchronous demodulation processing, all or part of the data and the data compression processing are performed as the first processing of the received signal processing, and output to the communication processing unit 121. Furthermore, an output control signal is output to the A / D conversion unit 103 via the control unit 113 and to the reception signal processing (second processing) unit 411 via the control unit 413 described later.

  The transmission signal processing (second processing) unit 112 performs radio modulation processing until the radio transmission main signal input from the communication processing unit 121 is modulated based on the input control signal from the control unit 113. Of these, the remaining signal processing performed subsequent to the signal processing performed by the transmission signal processing (first processing) unit 412 of the signal processing server 400 described later is performed by the transmission signal processing (first processing) unit 412 as well. The data compression / decompression processing is performed and output to the D / A converter 104 as a digital radio transmission main signal.

  The method determination unit 114 determines the wireless communication method in which communication is performed at that time for the digital received wireless main signal input from the A / D conversion unit 103, and outputs the wireless communication method to the control unit 113. Regarding the received radio main signal processing, the control unit 113 receives the radio signal characteristics input from the radio signal characteristic acquisition unit 102, the received signal processing (first processing) unit 111, and a later-described received signal processing (second processing) unit. Based on the control signal input from the control unit 413, which will be described later from 411, the network 200, and the like, the A / D conversion unit 103, the reception signal processing (first processing) unit 111, and the reception signal processing (first processing) which will be described later. 2 processing) A control signal is output to the part 411.

  The control unit 113 also includes a transmission signal processing (second processing) unit 112, a transmission signal processing (first processing) unit 412 (to be described later), a control unit 413 (to be described later), the network 200, and the like regarding transmission radio main signal processing. Control signals to the D / A converter 104, the transmission signal processing (second processing) unit 112, and a transmission signal processing (first processing) unit 412 described later are output.

  The communication processing unit 121 converts the received radio main signal input from the received signal processing (first processing) unit 111 into a data packet and outputs the data packet to the signal processing server 400 and the radio signal recording server 500 via the network 200. In addition, the communication processing unit 121 converts the control signal input from the control unit 113 into a data packet, and outputs the data packet to the program server 300, the signal processing server 400, and the wireless signal recording server 500 via the network 200.

  In addition, the communication processing unit 121 depackets the transmission radio main signal input from the signal processing server 400 via the network 200, and outputs it to the transmission signal processing (second processing) unit 112. Further, the communication processing unit 121 depackets control signals input from the program server 300, the signal processing server 400, and the wireless signal recording server 500 via the network 200, and outputs them to the control unit 113.

  FIG. 3 is a block diagram illustrating a configuration example of the signal processing server 400 of the wireless gateway system according to the first embodiment. The signal processing server 400 includes a CPU, a memory, an auxiliary storage device, and the like connected by a bus, and executes a program. By executing the program, the signal processing server 400 functions as an apparatus including the communication processing unit 401, the digital signal processing unit 410, and the upper communication control unit 421. The digital signal processing unit 410 includes a reception signal processing (second processing) unit 411, a transmission signal processing (first processing) unit 412, and a control unit 413. Note that all or part of the functions of the signal processing server 400 may be realized using hardware such as an ASIC, PLD, or FPGA.

  The communication processing unit 401 depackets the received radio main signal input from the wireless gateway device 100 via the network 200, and outputs it to the received signal processing (second processing) unit 411 via the control unit 413. Similarly, the communication processing unit 401 depackets a control signal input from the wireless gateway device 100, the program server 300, and the wireless signal recording server 500 via the network 200, and receives the received signal processing (second processing) via the control unit 413. Processing) unit 411 and transmission signal processing (first processing) unit 412.

  In addition, the communication processing unit 401 converts the wireless transmission main signal input from the transmission signal processing (first processing) unit 412 through the control unit 413 into a data packet, and outputs the data packet to the wireless gateway device 100 through the network 200. Similarly, the communication processing unit 401 converts the control signal input from the reception signal processing (second processing) unit 411 and the transmission signal processing (first processing) unit 412 through the control unit 413 into a data packet, To the wireless gateway device 100, the program server 300, and the wireless signal recording server 500.

  The reception signal processing (second processing) unit 411 performs radio demodulation until the reception signal is demodulated based on a control signal input from the control unit 113 of the wireless gateway device 100 via the network 200 and the control unit 413. In the processing, following the data compression decompression processing performed by the reception signal processing (first processing) unit 111 of the wireless gateway device 100 and the signal processing performed by the reception signal processing (first processing) unit 111 as well. The remaining signal processing to be performed is performed and output to the upper communication control unit 421 as a digital radio reception main signal. Further, the reception signal processing (second processing) unit 411 is connected to the A / D conversion unit 103 of the wireless gateway device 100 and the reception signal processing (first processing) via the control unit 413, the network 200, and the control unit 113. ) The output control signal is output to the unit 111.

  The transmission signal processing (first processing) unit 412 receives the transmission radio main signal input from the higher-level communication control unit 421 from the control unit 113 of the wireless gateway device 100 via the network 200 and the control unit 413. The communication processing of the wireless gateway device 100 is performed by performing all or part of the wireless modulation processing until the transmission data is modulated based on the control signal to be transmitted and the data compression processing as the first processing of the transmission signal processing. Output to the unit 121.

  The control unit 413 sends a control signal to the reception signal processing (second processing) unit 411 based on the control signal input via the control unit 113 of the wireless gateway device 100, the network 200, and the like regarding the reception radio main signal processing. Output. Further, the control unit 413 outputs a control signal to the transmission signal processing (first processing) unit 412 based on the control signal input via the control unit 113, the network 200, and the like regarding the transmission radio main signal processing. .

  The upper communication control unit 421 performs data communication processing higher than the second layer in the OSI reference model for the received radio main signal input from the received signal processing (second processing) unit 411. Thereby, the received data can be taken out and used. On the contrary, the higher-level communication control unit 421 generates a transmission radio main signal by performing higher-level data communication processing on the transmission data, and outputs the transmission radio main signal to the transmission signal processing (first processing) unit 412.

FIG. 4 is a block diagram illustrating a configuration example of the wireless signal recording server 500 of the wireless gateway system according to the first embodiment. The wireless signal recording server includes a CPU, a memory, an auxiliary storage device, and the like connected by a bus and executes a program. By executing the program, the wireless signal recording server 500 functions as an apparatus including the communication processing unit 501 and the wireless signal recording unit 502. Note that all or some of the functions of the wireless signal recording server 500 may be realized using hardware such as an ASIC, PLD, or FPGA.
The communication processing unit 501 depackets the received wireless main signal input from the wireless gateway device 100 via the network 200 and outputs the depacketed signal to the wireless signal recording unit 502. In addition, the communication processing unit 501 depackets the control signal input from the wireless gateway device 100, the program server 300, and the signal processing server 400 via the network 200 and outputs the packet to the wireless signal recording unit 502. Further, the communication processing unit 501 converts the wireless signal recording information input from the wireless signal recording unit 502 into a data packet, and outputs the data packet to the wireless gateway device 100, the program server 300, and the signal processing server 400 via the network 200.

  The radio signal recording unit 502 records radio signal information based on the received radio main signal input from the communication processing unit 501. Here, the radio signal information to be recorded is requested periodically or arbitrarily, including history information such as a radio communication method and communication time exchanged between the radio gateway device 100 and the radio communication terminal 50 in the past. Radio signal information such as frequency interference signal waveform, radio signal waveform, frequency band and occupied frequency bandwidth collected via the wireless gateway device 100 at the timing, and other radio interference signals and noise signals different from the desired radio communication signal Etc. are included.

  In the first embodiment, the digital signal processing unit 110 of the wireless gateway device 100 and the digital signal processing unit 410 of the signal processing server 400 are combined with each other via the network 200 to perform a series of wireless communication. The digital signal processing for synchronization and modulation / demodulation can be performed. In other words, with regard to wireless reception signal processing, the wireless gateway device 100 performs preprocessing and controls the network occupied bandwidth, and then the signal processing server 400 can perform the remaining wireless reception signal processing.

  As described above, each of the digital signal processing unit 110 and the digital signal processing unit 410 is, for example, an element for wired logic that can rewrite the signal processing function later such as FPGA, DSP (Digital Signal Processor) or Similarly, a signal processing function such as an MPU (Micro Processor Unit) can be configured with an element for program logic that can be rewritten later.

  Therefore, by adding necessary signal processing programs from the program server 300 and rewriting them as necessary, the wireless gateway device 100 and the signal processing server 400 can add, assign, and distribute digital signal processing functions. Even after installation of the device, it can be flexibly changed.

According to the first embodiment of the present invention described above, the wireless gateway system has the following effects.
When the signal processing part is arranged on the signal processing server 400 side, in the configuration of the conventional embodiment, a combination of various parameters such as the A / D bit, dynamic range, and sampling frequency of the wireless gateway device 100 with respect to the network transmission band However, each wireless communication method must be uniquely determined in advance.

  On the other hand, in the first embodiment, by providing the control unit 113 and the control unit 413, based on information obtained from the wireless gateway device 100, the signal processing server 400, and the wireless signal recording server 500, A The number of bits and other various parameter controls in the / D conversion unit 103 and the D / A conversion unit 104 can be adaptively performed. Similarly, in the received signal processing (first processing) unit 111, necessary time and frequency are adaptively set based on information obtained from the wireless gateway device 100, the signal processing server 400, the wireless signal recording server 500, and the like. It is possible to control the amount of data sent to the network 200 by cutting out the data or compressing the data.

  Further, since the control unit 113 is in the wireless gateway device 100, for example, a transmission delay necessary for acquiring the wireless signal characteristic information from the wireless signal characteristic acquisition unit 102, the A / D conversion unit 103, and the D / D A transmission delay necessary for transmitting the instruction signal to the A conversion unit 104 can be reduced. Therefore, the reaction time required for control is short, and the present invention can be applied to a high-speed wireless communication system that requires high-speed processing.

  By adopting the configuration according to the first embodiment, it is based on the type of the wireless communication method detected by the wireless gateway device 100 or the signal processing server 40, the wireless transmission quality to be satisfied in the wireless section, and the available network transmission band. Thus, for example, when the transmission quality is not significantly affected by the signal amplitude, it is possible to perform control such as reducing the number of A / D bits or not transmitting information during no signal time. For this reason, it is possible to flexibly implement trade-off control between a required network transmission band and transmission quality without newly installing / renewing the wireless gateway device 100, and as a result, control is performed such as reducing the network transmission band. be able to.

FIG. 5 is a flowchart for explaining the operation between the control unit 113 of the wireless gateway device 100 and the control unit 413 of the signal processing server 400 according to the first embodiment. Hereinafter, network transmission band control according to the first embodiment will be described in detail.
The control unit 113 of the wireless gateway device 100 acquires in advance the size of signal processing resources that can be used as the digital signal processing unit 110 and the signal processing capability of the processor (step S1). Similarly, the control unit 413 of the signal processing server 400 also acquires in advance the size of signal processing resources that can be used as the digital signal processing unit 410 and the signal processing capability of the processor (step S2).

The control unit 113 and the control unit 413 communicate between the wireless gateway device 100 and the signal processing server 400 via the network 200 to measure or acquire an available transmission band and a required delay time. Information such as signal processing resources can be mutually requested and shared between the control unit 113 and the control unit 413 (step S3).
In the wireless gateway device 100, the control unit 113 previously downloads a wireless signal standby program and a wireless system determination program from the program server 300 and stores them in the digital signal processing unit 110 (step S4). In a standby state of wireless signals from the wireless tag 10, the sensor 20, the wireless LAN 30, and other wireless terminals 40, only the method determination unit 114 is an operation target.

At this time, the control unit 113 monitors and detects the received spectrum based on the information from the wireless signal characteristic acquisition unit 102 (step S5). Until the reception spectrum is detected, the A / D converter 103 is instructed to perform a sleep operation or to reduce the sampling frequency of the A / D conversion to control standby power to be reduced. Is also possible.
When the reception spectrum is detected, the control unit 113 immediately increases the sampling frequency to expand the signal acquisition band, expands the dynamic range of the A / D conversion unit, and increases the number of A / D conversion bits. The / D conversion unit 103 is instructed to shift to the method determination mode. In the wireless system determination mode, the wireless system is determined by the system determination unit 114 based on the wireless signal input from the A / D conversion unit 103 and fed back to the control unit 113 (step S6).

Based on the determined wireless method, the control unit 113 downloads a program or function design information necessary for modulation / demodulation of the wireless method from the program server 300 (step S7), and executes functional arrangement estimation calculation (step S8). Here, for example, as a result of estimating the required resource amount, whether the estimated required resource amount is less than the available resource amount as compared with the information such as the signal processing resource acquired in advance can be satisfied. It is determined whether or not (step S9).
If all processing can be performed in the digital signal processing unit 110 (that is, remaining signal processing resources> required resources for processing the wireless system) (YES in step S9), received signal processing (first Processing) Instructing download and storage to unit 111, activates the reception signal processing function, and performs reception signal processing as it is (steps S13 and S14).

  On the other hand, when it is determined that the processing is impossible (NO in step S9), the function shifts to the function division arrangement with the received signal processing (second processing) unit 411 based on information such as the upper symbol processing resource. Here, if the signal processing resource of the signal processing server 400, the available transmission band, and the required delay time are unknown, the controller 413 is inquired as described above to acquire the information. In addition, the control unit 113 inquires the program server 300 or the like about a sampling frequency, a dynamic range, an A / D conversion bit number, and the like appropriate for the detected wireless method, acquires the information, and performs A / D Reset the conversion unit 103.

When shifting to the function division arrangement between the wireless gateway device 100 and the signal processing server 400, the control unit 113 performs only a part of the reception signal processing in the reception signal processing (first processing) unit 111. A required transmission band and an allowable transmission delay when the output intermediate processing result is transmitted to the signal processing server 400 are calculated (step S10).
Next, the estimated required resource amount is less than the available resource amount, and the estimated NW required transmission bandwidth between the devices is less than the available NW transmission bandwidth, and the NW between the devices. It is determined whether or not the condition # 2 that the actual delay time is less than the allowable delay time as the radio system can be satisfied (step S11).

  If the required transmission band is smaller than the previously obtained available transmission band, or if the transmission delay with the previously acquired signal processing server 400 is smaller than the allowable transmission delay (YES in step S11), the function division arrangement is performed. Is determined, the received signal processing (first processing) unit 111 is instructed to place the function, and at the same time, the remaining received signal processing functions are transmitted to the control unit 413 using the received signal processing (first processing). (2 processing) Requests the function 411 to be placed on the part 411 (steps S13 and S14). Based on the request, the control unit 413 downloads a necessary function processing program from the program server 300, stores it in the received signal processing (second processing) unit 411, and transmits a completion response to the control unit 113.

  On the other hand, when the calculated required transmission band and allowable transmission delay cannot satisfy the conditions of the usable transmission band and the actual transmission delay (NO in step S11), the control unit 113 performs the reception processing function. By changing the division location, recalculating the required transmission band and the allowable transmission delay (step S12), and repeating the same procedure as described above, the function rearrangement can be performed. At this time, the function to the wireless gateway device 100 or the signal processing server 400 is not limited to the change of the division part, such as cutting out only a significant signal on the frequency or time axis, or applying a signal compression algorithm. You can rearrange functions after adding blocks.

  Further, the control unit 113 deliberately reduces the number of A / D conversion bits instructed to the A / D conversion unit 103 in order to satisfy the constraint conditions for the signal processing resource, the required transmission band, or the allowable transmission delay, Control such as reducing the signal processing load in the wireless gateway device 100 or the signal processing server 400 or reducing the required transmission bandwidth by instructing the reduction of the number of significant digits when transmitting the intermediate processing result. Is also possible. Thereby, although the wireless transmission quality is lowered, the wireless reception process itself can be controlled to be established. In particular, there may be a case where transmission quality is not sacrificed even if the signal processing accuracy is degraded, such as when the distance between the wireless communication terminal 50 and the wireless gateway device 100 is short and the signal strength is sufficiently high.

  Further, as described in the background art, the configuration of the first embodiment functions effectively even when a plurality of wireless systems are received and processed by a common device. For example, when processing system detection at the same time while processing received signals of one wireless system, or simultaneously processing signal reception of multiple wireless systems, the resources available for each system are divided and controlled. There is a need to. Since the signal processing resources and transmission bands that can be used as a whole are constant, in that case, the control unit 113 repeats the same procedure as described above while changing the allocation of the signal processing resources and the transmission bands. It is also possible to switch while dynamically reconfiguring.

  As described above, based on signal processing resources and the like that can be used in the wireless gateway device 100 and the signal processing server 400, the control unit 113 and the control unit 413 calculate and evaluate the required transmission bandwidth and the allowable delay amount. The functional configuration can be constructed so that the reception signal processing is established as a whole. If the above-described example is applied, control such as minimizing a required transmission band or restructuring the entire system so as to maximize an allowable delay amount through mutual communication between the control unit 113 and the control unit 413. Is also possible.

  In the above example, the function division arrangement of received signal processing has been described as an example. However, if the method after method detection is followed, the same system construction / reconstruction and optimization control can be performed for transmission signal processing. It becomes.

  Further, the control unit 113 or the control unit 413 periodically or arbitrarily requests the history information such as the wireless communication method and the communication time exchanged between the wireless gateway device 100 and the wireless communication terminal 50. In addition, frequency spectrum signal waveforms collected via the radio signal characteristic acquisition unit 102, radio signal waveforms, frequency bands, occupied frequency bandwidths, and other radio interference signals different from desired radio communication signals, radio signals such as noise signals, etc. Signal information, and further information such as a wireless communication method detected via the method determination unit 114 can be transmitted to the wireless signal recording server 500 and recorded.

  The control unit 113 refers to the recorded information as needed, and changes the signal characteristic acquisition period from the wireless signal characteristic acquisition unit 102, for example, based on the type, communication frequency, communication time zone, and the like of the wireless method performed in the past. Thus, it is possible to control to reduce the power consumption of the apparatus. Alternatively, for example, in the above-described method detection mode, based on information recorded in the wireless signal recording server, a wireless method to be preferentially detected or a wireless method that can be excluded in advance is determined, or the A / D conversion unit 103 is By changing initial values such as the sampling frequency, dynamic range, and A / D conversion bit number that are instructed, the operating speed of the wireless gateway device 100 and received signal processing can be improved, and power consumption can be reduced. Advanced control is also possible.

  The information recorded in the wireless signal recording server 500 is not only past history information collected through the single wireless gateway device 100 but also information collected through many other wireless gateway devices. Then, for example, it is also possible to use it as database information such as what is a radio system often used in a home network in the world and what is a radio system often used in a specific time zone. is there.

  By analyzing and profiling information collected by a large number of wireless gateway devices, it is possible to predict and estimate the assumed radio wave usage environment even when the wireless gateway device is initially installed. It is also possible to apply advanced controls such as improving the operation speed and reducing power consumption ahead of schedule.

[Second Embodiment]
Next, a second embodiment of the present invention will be described.
6 to 8 are block diagrams showing the configuration of each part of the wireless gateway system according to the second embodiment.
FIG. 6 is a block diagram illustrating a configuration example of the wireless gateway device 100 of the wireless gateway system according to the second embodiment. It should be noted that parts corresponding to those in FIG. The method determination unit 114 provided in the digital signal processing unit 110 of the wireless gateway device 100 is omitted.

FIG. 7 is a block diagram illustrating a configuration example of the signal processing server 400 of the wireless gateway system according to the second embodiment. The parts corresponding to those in FIG. In FIG. 7, a method determination unit 414 is provided in the digital signal processing unit 410 of the signal processing server 400.
FIG. 8 is a block diagram illustrating a configuration example of the wireless signal recording server 500 of the wireless gateway system according to the second embodiment. Note that portions corresponding to those in FIG. 4 are denoted by the same reference numerals and description thereof is omitted.

  The difference between the configuration example according to the second embodiment shown in FIGS. 6 to 8 and the configuration example according to the first embodiment shown in FIGS. 2 to 4 is that the digital signal processing unit 110 and the signal processing server 400 of the wireless gateway device 100 are different. Assignment of functions in the digital signal processing unit 410 of FIG. In the second embodiment, the method determination unit 114 provided in the digital signal processing unit 110 of the wireless gateway device 100 in the first embodiment is replaced with the method determination unit 414 in the digital signal processing unit 410 of the signal processing server 400. It is provided as. In the configuration example according to the first embodiment shown in FIG. 2 to FIG. 4 by exchanging the wireless main signal and the control signal with each other via the network 200 between the control unit 113 and the control unit 413. In the configuration example according to the second embodiment shown in FIG. 8, the same transmission / reception processing function can be realized as a whole.

  According to the second embodiment described above, the control unit 113 and the control unit 413 divide the digital signal processing units 110 and 410 into the wireless gateway device 100 and the signal processing server 400 and adaptively arrange the functions. For example, even when it becomes necessary to support a new wireless communication system, the system can be flexibly configured by increasing the burden on the signal processing server 400 without replacing the wireless gateway device 100 that is a wireless base station. It can be operated.

[Third Embodiment]
Next, a third embodiment of the present invention will be described.
FIG. 9A is a block diagram illustrating a configuration of a reception signal processing (first processing) unit 111 in the wireless gateway device 100 according to the third embodiment. FIG. 9B is a block diagram illustrating a configuration of a reception signal processing (second processing) unit 411 of the signal processing server 400 according to the third embodiment. The configuration of the reception signal processing (first processing) unit 111 and the configuration of the reception signal processing (second processing) unit 411 according to the third embodiment are the same as those of the first embodiment shown in FIGS. It can be applied to any of the configurations of the second embodiment shown in FIG.

  9A, a received signal processing (first processing) unit 111 includes a signal time interval extraction unit 111-1, an FFT (Fast Fourier Transform) unit 111-2, a signal frequency interval extraction unit 111-3, and data compression. Part 111-4. The signal time interval extraction unit 111-1 is significant for the received radio main signal input from the A / D conversion unit 103 based on the packet reception signal time interval information instructed by the control unit 113 or the control unit 413. Only the received radio main signal in the received signal time interval is extracted and output to the FFT section 111-2.

  In addition, as the acquisition means of the signal time interval information, a method of acquiring from the radio signal characteristic acquisition unit 102 in real time, a method of detecting from the signal amplitude or the like in real time inside the reception signal processing (first processing) unit 111, A method of calculating and using a signal time interval from a result of demodulating a preceding control packet or the like in the reception signal processing (second processing) unit 411 can be considered.

  Based on the FFT window width and the number of FFT points instructed from the control unit 113 or the control unit 413, the FFT unit 111-2 performs the following operation on the received radio main signal input from the signal time interval extraction unit 111-1. Time-frequency conversion is performed and output to the signal frequency interval extraction unit 111-3. Note that the FFT window width and the FFT point number information acquisition means include wireless communication method information detected in real time using the method determination unit 114 or wireless data recorded as a history in the wireless signal recording unit 502. A method for estimating an appropriate value based on communication method information or the like can be considered.

The signal frequency interval extraction unit 111-3 receives a significant received signal with respect to the received radio main signal input from the FFT unit 111-2 based on the signal frequency interval information instructed by the control unit 113 or the control unit 413. Only the received radio main signal in the frequency section is extracted and output to the data compression unit 111-4. The signal frequency section information acquisition means includes a method of acquiring in real time from the radio signal characteristic acquisition unit 102, a signal amplitude after frequency conversion in real time in the reception signal processing (first processing) unit 111, and the like. A method of detecting, a method of calculating and using a signal frequency interval from the result of demodulating a preceding control packet or the like in the received signal processing (second processing) unit 411, etc. can be considered.
The data compression unit 111-4 applies an arbitrary data compression algorithm to the received radio main signal input from the signal frequency interval extraction unit 111-3, performs data compression, and outputs the data to the communication processing unit 121.

9B, the received signal processing (second processing) unit 411 includes a data decompression unit 411-1, a signal frequency interval complementing unit 411-2, an IFFT (Inverse FFT) unit 411-3, and a signal time interval complementing unit. 411-4, a synchronization / demodulation unit 411-5, and an error correction unit 411-6. The data decompression unit 411-1 applies the decompression algorithm corresponding to the compression algorithm used in the data compression unit 111-4 to the received radio main signal input from the communication processing unit 401, performs data decompression, It outputs to the frequency area complement part 411-2.
The signal frequency interval complementing unit 411-2 performs signal frequency interval on the received radio main signal input from the data decompression unit 411-1 based on the signal frequency interval information instructed by the control unit 113 or the control unit 413. Signal waveforms other than those are complemented and output to the IFFT unit 411-3.

Based on the FFT window width and the number of FFT points instructed from the control unit 113 or the control unit 413, the IFFT unit 411-3 applies the received radio main signal input from the signal frequency interval complementing unit 411-2. Frequency-time inverse transform is performed and the signal time interval complementing unit 411-4 outputs the signal time interval complementing unit 411-4. Based on the packet reception signal time interval information instructed by the control unit 113 or the control unit 413, The received radio main signal input from IFFT section 411-3 is complemented with a signal waveform other than the signal frequency section, and is output to synchronization / demodulation section 411-5.

  The synchronization / demodulation unit 411-5 determines the signal time based on the wireless communication method information detected in real time using the method determination unit 114 or the wireless communication method information recorded as a history in the wireless signal recording unit 502. The received radio main signal input from the interval complementing unit 411-4 is subjected to radio synchronization processing and demodulation processing, and is output to the error correction unit 411-6.

  The error correction unit 411-6 performs synchronization / demodulation based on the wireless communication method information detected in real time using the method determination unit 114 or the wireless communication method information recorded as a history in the wireless signal recording unit 502. Error correction decoding processing is performed on the received radio main signal input from unit 411-5 and output to higher-level communication control unit 421.

According to the third embodiment of the present invention described above, the wireless gateway system has the following effects.
When the wireless gateway system covers a wideband frequency represented by an ISM (Industry-Science-Medical) band of 2.4 GHz, for example, and performs communication using one or a plurality of wireless communication systems Is assumed.
In the case where the wireless communication system is intermittent packet communication using TDMA (Time Division Multiple Access), no significant wireless signal is included outside the packet transmission / reception time interval. Similarly, the radio communication method to be demodulated uses only the information on the frequency channel and does not occupy the target frequency band widely. Wireless signals are not included.
Therefore, according to the third embodiment, it is possible to add a new functional block that extracts and transmits only signals in a significant time interval and frequency interval, and a transmission signal band necessary for network transmission via the network 200 The width can be reduced.

Further, according to the third embodiment, by adding a new functional block that combines a general-purpose data compression algorithm, it is possible to perform control such as further reducing the required transmission signal bandwidth.
According to the present invention, the wireless gateway device 100 and the signal processing server 400 include the digital signal processing units 110 and 410, respectively, and the digital signal processing units 110 and 410 have signal processing function blocks necessary for wireless communication. The wireless communication function can be realized as a whole system while distributing and coordinating wireless signal processing among devices. Furthermore, by providing the wireless gateway device 100 and the signal processing server 400 with the control units 113 and 413, respectively, based on the information obtained from the wireless gateway device 100, the signal processing server 400, and the wireless signal recording server 500, A Various parameter controls such as the conversion bit number, dynamic range, sampling frequency, etc. of the / D conversion unit 103 and D / A conversion unit 104 can be adaptively controlled. Furthermore, it is possible to control the occupied network transmission band by adding new function blocks such as necessary time, frequency adaptive extraction, and data compression.

  Accordingly, it is possible to adopt a configuration in which all radio signal processing is not performed by the signal processing server 400 but is pre-processed by the radio gateway device 100, and the amount of data transmitted to the network 200 can be reduced and controlled. . For example, when the transmission quality is not significantly affected by the signal amplitude, it is possible to perform control such as reducing the number of A / D bits or not transmitting information during no signal time.

  Furthermore, without the new installation / renewal of the wireless gateway device 100, the type of the wireless communication method, the wireless transmission quality to be satisfied in the wireless section, the usable network transmission band, the digital signal processing unit of the wireless gateway device 100 110 and the information such as the size of resources that can be implemented in the digital signal processing unit 410 of the signal processing server 400, there is an effect that a trade-off control between a required network transmission band and transmission quality can be flexibly performed. .

  Further, for example, when it is necessary to support a new wireless communication method and the signal processing amount is expected to increase, the wireless gateway device 100 with a limited hardware scale of the digital signal processing unit 110 is updated. Even if it is not, the occupied bandwidth is within the available network transmission bandwidth by increasing the burden on the signal processing server 400 or by sacrificing the wireless transmission quality by reducing the number of A / D bits. There is an effect that the system can be operated flexibly and economically.

  In addition, according to the present invention, not only the real-time processing in the wireless gateway device 100 but also the past wireless signal history and communication history recorded in the wireless signal recording server 500 are used to determine the wireless communication method. It was decided that it could be used.

  As a result, for example, a place where a specific wireless communication is performed or a time zone may have periodicity. Therefore, a radio signal arriving at the wireless gateway device 100 or a wireless communication method to be used may be accurately determined in advance. By estimating well or using past transmission quality history in the radio section and network section, the above-mentioned various parameters can be adaptively controlled, a radio frequency band in which a specific radio communication method can be used, By constraining the usage time in the reverse direction, the effect that the network occupied bandwidth can be efficiently controlled can be obtained.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes designs and the like that do not depart from the gist of the present invention.

  DESCRIPTION OF SYMBOLS 10 ... Wireless tag, 20 ... Sensor, 30 ... Wireless LAN, 40 ... Other wireless terminals, 100 ... Wireless gateway apparatus, 101 ... Wireless part / analog part, 102 ... Wireless signal characteristic acquisition part, 103 ... A / D conversion part , 104 ... D / A converter, 110 ... digital signal processor, 111 ... received signal processor (first process), 111-1 ... signal time interval extractor, 111-2 ... FFT part, 111-3 ... signal Frequency section extraction unit, 111-4 ... data compression unit, 112 ... transmission signal processing (second processing) unit, 113, 413 ... control unit, 114, 414 ... method determination unit, 121 ... communication processing unit, 200 ... network, 300 ... Program server, 400 ... Signal processing server, 401 ... Communication processing unit, 410 ... Digital signal processing unit, 411 ... Received signal processing (second) 411-1... Data decompression unit, 411-2... Signal frequency interval complementing unit, 411-3... IFFT unit, 411-4... Signal time interval complementing unit, 411-5. 6 ... error correction unit, 412 ... transmission signal processing (first processing) unit, 421 ... upper communication control unit, 500 ... wireless signal recording server, 501 ... communication processing unit, 502 ... wireless signal recording unit

Claims (8)

A wireless terminal device including a first communication unit that performs wireless signal communication, a wireless gateway device that performs communication of the wireless signal between the wireless terminal device, and the wireless gateway device connected to the wireless gateway device via a network; In a wireless gateway system comprising a signal processing server for performing wireless signal processing,
The wireless gateway device is:
A first variable signal processing unit capable of rewriting a signal processing program;
A first control unit that controls a transmission band between the device itself and the signal processing server,
The signal processing server
A second variable signal processing unit capable of rewriting the signal processing program;
A second control unit that controls a transmission band between the wireless gateway device and the device itself,
The first control unit and the second control unit, based on the wireless communication method detected by the wireless gateway device or the signal processing server, the first variable signal processing unit and the second variable signal The first variable signal using a resource size that can be implemented in a processing unit, a network transmission band that can be used between the wireless gateway device and the signal processing server, and information on an actual network transmission delay A wireless gateway system, wherein a wireless communication functional block is allocated to a processing unit and the second variable signal processing unit. A wireless signal recording server connected to the wireless gateway device via a network;
The wireless signal recording server includes a wireless signal recording unit that records wireless signal information that is information of a wireless signal transmitted or received by the wireless gateway device and wireless communication history information that represents a history of wireless communication performed by the wireless gateway device. Prepared,
The first control unit or the second control unit controls a network transmission band by further using radio signal information or radio communication history information recorded in the radio signal recording server. Item 2. The wireless gateway system according to Item 1. The first control unit obtains a resource that can be implemented in the first variable signal processing unit,
The second control unit obtains a resource that can be implemented in the second variable signal processing unit,
The first controller and the second controller are
By communicating with each other between the wireless gateway device and the signal processing server, obtain available transmission band and transmission delay time,
Based on the resource information, the wireless communication function is divided into functions,
By dividing and evaluating the required network transmission band and allowable network delay time calculated as a result of the function division arrangement, the available network transmission band and the actual network transmission delay time, the function division of the wireless communication function The wireless gateway system according to claim 1, wherein establishment of the arrangement is determined. The wireless gateway device is
A second communication unit that performs communication of the wireless signal with the wireless terminal device;
A radio signal characteristic acquisition unit for acquiring signal characteristics of the radio signal;
When the wireless signal is a received signal, a digitization processing unit that converts an analog wireless signal into a digital signal sequence;
When the wireless signal is a transmission signal, an analog processing unit that converts a digital signal sequence into an analog wireless signal;
A third communication unit that communicates with the signal processing server or the wireless signal recording server via the network; and
The first variable signal processor is
Perform digital signal processing associated with the wireless signal communication,
A first received signal processing unit that performs received signal processing of the received signal;
The wireless gateway system according to claim 1, further comprising: a first transmission signal processing unit that performs transmission signal processing of the transmission signal. The signal processing server is
A fourth communication unit for communicating with the wireless gateway device or the wireless signal recording server via the network;
Based on the processing result of the second variable signal processing unit, further comprising a host communication control unit for inputting and outputting transmission / reception data,
The second variable signal processor is
Perform digital signal processing associated with the wireless signal communication,
A second received signal processing unit for performing received signal processing of the received signal;
The wireless gateway system according to claim 1, further comprising: a second transmission signal processing unit that performs transmission signal processing of the transmission signal. The wireless signal recording server is
A fifth communication unit for communicating with the wireless gateway device or the signal processing server via the network;
Recording a wireless signal in the vicinity of the wireless gateway device acquired by the second communication unit of the wireless gateway device and wireless communication information exchanged between the wireless terminal device and the wireless gateway device A radio signal recording unit;
The wireless gateway system according to claim 2, further comprising: The first received signal processing unit is
A signal time interval extraction unit for extracting a signal of a reception signal time interval from the radio signal;
A time-frequency converter that performs time-frequency conversion of the signal in the received signal time interval;
A signal frequency interval extractor for extracting a signal of the received signal frequency interval from the signal after time frequency conversion;
A data compression unit that performs data compression of the received signal from which the time interval and the frequency interval are extracted;
The wireless gateway system according to claim 4, comprising: The second received signal processing unit is
A data decompression unit for decompressing data output from the first received signal processing unit;
A signal frequency interval complementing unit that complements a signal waveform other than the received signal frequency interval with respect to the expanded signal; and
A frequency time conversion unit that performs frequency time conversion of the signal supplemented by the signal frequency interval interpolation unit;
A signal time interval complementing unit that complements a signal waveform other than the received signal time interval with respect to the signal after frequency time conversion;
A synchronization / demodulation unit that performs synchronization / demodulation on a received signal supplemented with a time interval and a frequency interval;
The wireless gateway system according to claim 5, comprising:

Images