JP2011035497A - Radio communication apparatus, and radio communication system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To excellently identify an apparatus to perform communication with. <P>SOLUTION: FACCH (Fast Associated Control Channel) included in a communication frame of the radio communication apparatus inserts an ESN (Electric Serial Number) code and an ESN consisting of a model number, a version number and a serial number. When the ESN code is 0x01, it is indicated that the ESN is inserted in a fourth octet and beyond and, as the ESN, the model number, the version number and the serial number are included. The ESN is extracted from a communication frame, so that radio communication apparatuses that are communicating are uniquely identified. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a wireless communication apparatus and a wireless communication system.

  Wireless communication includes a method in which wireless devices communicate with each other via a so-called repeater. Furthermore, it is possible to configure a communication area of a wireless communication system that includes a plurality of repeater cover areas by connecting a plurality of repeaters via a network.

  In such a wireless communication system, in order to identify which wireless device is performing communication, a technique for transmitting identification information of the wireless device together with message information transmitted from the wireless device has been proposed (for example, a patent). Reference 1).

JP 2009-10631 A

  However, in the technique described in Patent Document 1, it is necessary for a user to set identification information for specifying a wireless device in advance. Further, in such identification information, the same identification information may be usable if the group is different or the area to be used is different, and the radio device cannot always be uniquely identified.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a wireless communication apparatus and a wireless communication system that can appropriately identify a device that performs communication.

In order to achieve the above object, a wireless communication apparatus according to the first aspect of the present invention provides:
A wireless communication device that communicates with other devices by wireless communication,
Identification information storage means for storing ESN (Electric Serial Number) which is identification information unique to the wireless communication device;
Transmitting means for transmitting communication data to the other device;
Identification information addition means for adding the ESN stored in the identification information storage means to the communication data transmitted by the transmission means;
It is characterized by providing.

  The identification information adding unit may be configured to further add information indicating that the ESN is added when the ESN is added to the communication data.

  An extraction unit that extracts the ESN from the communication data when the communication data is received may be further provided.

A wireless communication system according to a second aspect of the present invention is:
The wireless communication device;
A relay device that relays communication by the wireless communication device;
A plurality of relay devices connected via a network, and a server for controlling communication in the wireless communication device and the relay device;
A wireless communication system comprising:
The wireless communication device includes means for transmitting the ESN extracted by the extraction means to the outside.

  ADVANTAGE OF THE INVENTION According to this invention, the apparatus which communicates can be identified suitably.

It is a block diagram which shows an example of the radio | wireless communications system which is one embodiment of this invention. It is a block diagram which shows the structural example of the server in one embodiment of this invention. It is a block diagram which shows the structural example of the radio | wireless communication apparatus in one embodiment of this invention. It is a figure which shows the structural example of a communication frame.

  An embodiment of a wireless communication apparatus and a wireless communication system according to the present invention will be described with reference to the drawings. FIG. 1 shows a configuration example of a wireless communication system according to an embodiment of the present invention.

  The wireless communication system 5 includes a plurality of repeaters 2 (2A, 2B, 2C, 2D) connected to a network 4, for example, as shown in FIG. The wireless communication system 5 includes a plurality of wireless communication devices 3 (3A, 3B, 3C, 3D, 3E, and 3F). A server 1 is connected to the network 4. Also, a management PC (personal computer) 6 (6A, 6B) for managing communication information of the wireless communication device 3 is provided.

  The network 4 is, for example, a LAN (Local Area Network). The network 4 may be a circuit switching network, a packet switching network, the Internet, or a dedicated line network. Further, the network 4 is not limited to a wired line, and may be a wireless communication network such as a wireless LAN.

  In the wireless communication system 5, communication between the wireless communication devices 3 is performed via the repeater 2. For example, the wireless communication devices 3A and 3C in FIG. 1 perform communication via the repeater 2A. In the wireless communication system 5, communication between the wireless communication devices 3 belonging to different communication ranges (repeater areas) of the repeater 2 is performed via the network 4. For example, the wireless communication devices 3A and 3D communicate via the repeater 2A, the network 4, and the repeater 2C. The communication here includes voice communication and data communication.

  Wireless communication devices (hereinafter abbreviated as slave units) 3A to 3F communicate wirelessly with repeaters 2A to 2D. Communication from slave units 3A to 3F to repeaters 2A to 2D is referred to as uplink, and transmission from repeater 2 to slave unit 3 is referred to as downlink. The uplink and downlink are transmitted simultaneously on different frequencies, for example. The uplink and downlink may be transmitted twice in a time division manner.

  In one repeater 2, the number of channels that can be simultaneously communicated with the uplink and the downlink as one set is 1 or 2 or more. The number of simultaneous communication channels depends on the configuration of the repeater 2. In addition, although the subunit | mobile_unit 3A-3F is described like the mobile station in FIG. 1, the case of a fixed station is included.

  In the wireless communication system 5 of this embodiment, a predetermined one of the wireless communication devices 3 is used as a management wireless communication device 3. For example, the wireless communication devices 3 constituting the wireless communication system 5 are grouped, and the wireless communication device 3 owned by the manager of the group is used as the management wireless communication device 3. When receiving the communication frame, the management wireless communication device 3 extracts information for identifying the wireless communication device 3 that has transmitted the communication frame, and outputs the information to the management PC 6.

  The storage unit of the management PC 6 stores each wireless communication device 3 and information (ESN to be described later) for identifying the wireless communication device 3 in association with each other. The management PC 6 monitors whether the wireless communication device 3 is illegally used based on the identification information transmitted from the wireless communication device 3. For example, it is monitored whether or not communication is performed by the wireless communication device 3 whose identification information is not registered.

  FIG. 2 is a block diagram showing a configuration example of the server 1 in the wireless communication system 5 according to the embodiment of the present invention. The server 1 controls the entire communication in the wireless communication system 5. For example, when the user operates the server 1, the repeater 2 can be remotely operated to change the settings of the repeater 2. As shown in FIG. 2, the server 1 includes a control unit 11, a main storage unit 12, an external storage unit 13, an operation unit 15, a display unit 16, and a network interface (hereinafter, network I / F) unit 17. The main storage unit 12, the external storage unit 13, the operation unit 15, the display unit 16, and the network I / F unit 17 are all connected to the control unit 11 via the internal bus 10.

  The control unit 11 includes a CPU (Central Processing Unit) and the like, and controls the operation of the server 1 according to a program stored in the external storage unit 13.

  The main storage unit 12 includes a RAM (Random-Access Memory) or the like, loads a program stored in the external storage unit 13, and is used as a work area of the control unit 11.

  The external storage unit 13 includes a non-volatile memory such as a flash memory, a hard disk, a DVD-RAM (Digital Versatile Disc Random-Access Memory), a DVD-RW (Digital Versatile Disc ReWritable), and the above processing is performed by the control unit 11. A program to be executed is stored in advance, and data stored in the program is supplied to the control unit 11 in accordance with an instruction from the control unit 11, and the data supplied from the control unit 11 is stored.

  The operation unit 15 includes a pointing device such as a keyboard and a mouse, and an interface device that connects the keyboard and the pointing device to an internal bus. Operation information for the operation unit 15 is supplied to the control unit 11.

  The display unit 16 includes a CRT (Cathode Ray Tube) or an LCD (Liquid Crystal Display), and displays communication information on the network 4.

  The network I / F unit 17 includes a wireless transceiver, a wireless modem or a network termination device, and a serial interface or a LAN interface connected to them. The server 1 is connected to the network 4 via the network I / F unit 17. Further, a control signal for controlling the slave unit 3 and the repeater 2 is transmitted via the network I / F unit 17.

  FIG. 3 is a block diagram showing a configuration of radio communication apparatus 3 according to the embodiment of the present invention. The wireless communication device 3 has a transmission function and a reception function. The reception function receives a signal transmitted by the repeater 2 on the downlink. The transmission function transmits a signal to the repeater 2 through the uplink. As shown in FIG. 3, the wireless communication device 3 includes an antenna 31, a transmission / reception switching unit 32, a transmission unit 33, a reception unit 34, and audio A / D / D / A (analog / digital / digital / analog). A conversion unit 35, a controller 36, an amplifier 37, a microphone 38, a speaker 39, a display unit 41, and an operation unit 42 are provided.

  The antenna 31 receives a signal wave transmitted from another wireless communication device 3 as a communication partner and relayed by the repeater 2. The antenna 31 receives a signal wave directly transmitted from another wireless communication device 3. The antenna 31 transmits a signal wave toward the repeater 2 that relays the signal wave to another wireless communication device 3 that is a communication partner. The antenna 31 directly transmits a signal wave toward the other wireless communication device 3.

  The transmission / reception switching unit 32 outputs the signal wave for transmission input from the transmission unit 33 to the antenna 31. In addition, the transmission / reception switching unit 32 inputs a signal wave received by the antenna 31 and outputs this signal wave to the reception unit 34.

  The transmission unit 33 modulates the input audio signal and data signal based on, for example, a four-value FSK (Frequency Shift Keying) modulation method, and outputs the modulated audio signal and data signal to the transmission / reception switching unit 32. The audio signal is supplied from the audio A / D / D / A conversion unit 35 and the data signal is supplied from the controller 36.

  The receiving unit 34 has a tuning function for selecting and receiving a signal of a specific frequency (communication channel), and the frequency of the radio signal to be received is set based on the control of the controller 36. The receiving unit 34 has a demodulation function for demodulating the input received signal. Here, the reception unit 34 performs demodulation based on the same modulation scheme as that of the transmission unit 33.

  The audio A / D / D / A converter 35 has an analog-digital conversion function for converting an audio signal between an analog signal and a digital signal.

  The controller 36 controls the operation of the wireless communication device 3. The controller 36 includes a CPU (Central Processing Unit) 36a, a ROM (Read Only Memory) 36b, and a RAM (Read / Write Memory) 36c.

  The ROM 36 b stores a control program for the controller 36 to control the operation of the wireless communication device 3. Based on this control program, the CPU 36a controls the wireless communication device 3 to function as a transmitter and a receiver. The RAM 36c functions as a work area for the CPU 6a.

  The ROM 36b stores an ESN (Electronic Serial Number). The ESN is identification information unique to the wireless communication device 3 set by the manufacturer of the wireless communication device 3 or the like. The wireless communication device 3 can be specified by the ESN. This ESN is identification information that the wireless communication apparatus 3 has without being set by the user of the wireless communication apparatus 3. The controller 36 automatically adds this ESN to the voice data when making a call and transmits the voice data.

  When the transmission unit 33 outputs an audio signal (when transmitting a connection request to a communication partner), the controller 36 adds information regarding the transmission destination and its own ESN to the audio signal. Further, the controller 36 extracts the ESN from the received communication frame.

  The amplifier 37 amplifies the audio signal supplied from the microphone 38 and supplies the amplified audio signal to the audio A / D / D / A converter 35. The amplifier 37 amplifies the audio signal supplied from the audio A / D / D / A converter 35 and supplies the amplified audio signal to the speaker 39.

  The microphone 38 acquires the user's call sound and supplies it to the amplifier 37 as an audio signal.

  The speaker 39 outputs the communication sound of the communication partner based on the audio signal supplied from the amplifier 37.

  The display unit 41 includes a monitor screen made up of a liquid crystal display or the like. On the monitor screen, a notification of the operation state of the wireless communication device 3 to the user, a message prompting the user to input by the operation unit 42, and the like are displayed.

  The operation unit 42 is a device for inputting condition information regarding the operation of the wireless communication device 3. The operation unit 42 is provided with various operation keys. When the user performs various inputs by operating the operation keys, the wireless communication device 3 can perform operations based on the inputs. The content of the operation on the operation unit 42 is detected by the controller 36. That is, the controller 36 detects the type of the operated operation key and the content of the operation on the operation key. And the controller 36 discriminate | determines the content input with the operation key, and controls the radio | wireless communication apparatus 3 so that the operation | movement according to the input content may be performed.

  A frame configuration of a communication frame transmitted when voice communication is performed by the wireless communication apparatus 3 according to this embodiment will be described. When the user of the wireless communication apparatus 3 performs a call, the operation unit 42 is operated to specify a destination, and when voice is input from the microphone 38, a communication frame as shown in FIG. 4A is transmitted to the repeater 2. The

  As shown in FIG. 4A, the communication frame transmitted from the wireless communication device 3 includes a preamble, a header, a FACCH (high-speed associated control channel), and audio data.

  The preamble is a bit string for synchronization and is a control signal indicating the start of a frame. The header includes identification information of a call partner. The sound data is sound data corresponding to the sound input from the microphone 38.

  The FACCH is a channel used for transmitting control information accompanying voice data. In this embodiment, ESN is inserted into this FACCH.

  As shown in FIG. 4B, the FACCH is data of 10 octets and includes a message type, a manufacturing number, an ESN code, a model number, a version number, and a serial number.

  The message type and serial number are identification information defined by CAI (Common Air Interface).

  The third and subsequent octets are areas that can be freely set by the manufacturer. In this embodiment, an ESN including a model number, a version number, and a serial number, and an ESN code are inserted.

  The ESN code is a code indicating whether an ESN is inserted after the fourth octet. A value of 0x01 or 0x02 is set in the ESN code. In this embodiment, if the ESN code is 0x01, it indicates that the ESN is inserted after the fourth octet, and if the ESN code is 0x02, it indicates that another data is inserted.

  In this embodiment, the ESN includes a model number, a version number, and a serial number. The model number is a number for identifying the model of the wireless communication device 3. The version number is information for identifying the model version of the wireless communication device 3. The serial number is information for identifying the wireless communication device 3 itself, and is unique data.

  The communication frame configured as described above is relayed to the repeater 2 and transmitted to the other wireless communication device 3 via the network 4 so that a call with the other wireless communication device 3 becomes possible.

  The controller 36 of the wireless communication device 3 that has received the communication frame (for example, a predetermined management wireless communication device 3 of the wireless communication devices 3) extracts the ESN from the received communication frame. When extracting the ESN from the communication frame, first, the ESN code in the FACCH is extracted. If the ESN code is 0x01, it is determined that the ESN is inserted after the fourth octet, and the fourth and subsequent octets (FIG. 4). In the example of (B), ESN data of 4th to 9th octets) is extracted.

  When the controller 36 of the management wireless communication device 3 extracts the ESN, it sends the ESN to the management PC 6 installed within the communicable range of the management wireless communication device 3. For example, the ESN extracted by the controller 36 of the management wireless communication device 3 is clone-output to the management PC 6. The management wireless communication apparatus 3 may be directly connected to the PC 6 with a communication cable, and may be transmitted via the communication cable. Note that ESN transmission from the management wireless communication apparatus 3 to the PC 6 may be performed every time the management wireless communication apparatus 3 receives a communication frame, or may be performed at predetermined intervals. It may be. In addition, the management wireless communication device 3 may transmit the information when a predetermined operation is performed.

  PC6 which received ESN displays the content of the radio | wireless communication apparatus 3 specified from ESN on a display part, for example. The administrator of the PC 6 can monitor the information of the wireless communication device 3 specified from the ESN. Here, when unauthorized use is found in a specific wireless communication device 3, a warning or caution can be transmitted to the wireless communication device 3 (or to the user). In addition, a signal for controlling the management wireless communication device 3 can be transmitted to disable the use of the wireless communication device 3.

  For example, a tone used by a specific group (for example, Company A) among a plurality of types is determined in advance. For example, a communication frame transmitted by the wireless communication device 3 of Company A is received only by the wireless communication device 3 of Company A. If the wireless communication apparatus 3 for management of company A receives the communication frame, the ESN is extracted. Then, the extracted ESN is sent to the PC 6. In the management PC 6, the ESN of the wireless communication device 3 used by the company A is registered in advance. When an ESN that is not registered in the management PC 6 is received, it can be determined that the wireless communication device 3 corresponding to the ESN has been illegally used (spoofed as an employee of company A).

  As described above, the wireless communication apparatus 3 of this embodiment automatically adds ESN, which is identification information that can uniquely identify the wireless communication apparatus 3, to the communication data and transmits it. Thereby, the wireless communication apparatus 3 that is performing communication can be suitably identified. Since ESN is predetermined identification information, the wireless communication device 3 can be identified without the user having to make special settings.

  Note that the hardware configuration, the frame configuration of the communication frame, and the operations described in the above embodiment are examples, and can be arbitrarily modified and modified. For example, the server 1 can be realized using a normal computer without using a dedicated system. For example, a computer program for executing the above operation is stored and distributed in a computer-readable recording medium (flexible disk, CD-ROM, DVD-ROM, etc.), and the computer program is installed in the computer. Thus, the server 1 that executes the above-described processing may be configured. Further, the server 1 may be configured by storing the computer program in a storage device of a server device on a communication network such as the Internet and downloading it by a normal computer system.

  Further, when the functions of the server 1 are realized by sharing of an OS (operating system) and an application program, or by cooperation between the OS and the application program, only the application program portion is stored in a recording medium or a storage device. Also good.

  It is also possible to superimpose a computer program on a carrier wave and distribute it via a communication network. For example, the computer program may be posted on a bulletin board (BBS, Bulletin Board System) on a communication network, and the computer program distributed via the network. The computer program may be started and executed in the same manner as other application programs under the control of the OS, so that the above-described processing may be executed.

  In the above embodiment, the example in which the ESN is inserted into the communication frame when voice communication is performed by the wireless communication device 3 has been described. However, the ESN is automatically inserted into the communication frame and transmitted in the same manner during data communication. can do.

  Moreover, although the example which employ | adopts 4 value FSK modulation system as a signal modulation system for the radio | wireless communication apparatus 3 to transmit / receive a signal was demonstrated, you may employ | adopt another modulation system. For example, as a signal modulation method, a GMSK (Gaussian filtered Minimum Shift Keying) modulation method, a QPSK (Quadrature Phase Shift Keying) modulation method, or another modulation method may be employed.

  In the above-described embodiment, the management wireless communication device 3 extracts the ESN from the communication frame, and the wireless communication devices 3 other than the management wireless communication device 3 insert the ESN into the communication frame. However, the functions of the wireless communication device 3 for management and other wireless communication devices 3 are the same, and the wireless communication device 3 other than for management can output the ESN extracted from the communication frame by connecting a communication cable to the PC. it can. Further, when the management wireless communication apparatus 3 performs a voice call or data communication, an ESN can be automatically inserted into a communication frame to be transmitted.

1 Server 2, 2A, 2B, 2C, 2D Repeater 3, 3A, 3B, 3C, 3D, 3E, 3F Wireless communication device 4 Network 5 Wireless communication system 6 PC
10 internal bus 11 control unit 12 main storage unit 13 external storage unit 15 operation unit 16 display unit 17 network interface unit 31 antenna 32 transmission / reception switching unit 33 transmission unit 34 reception unit 35 voice A / D / D / A conversion unit 36 controller 37 Amplifier 38 Microphone 39 Speaker 41 Display unit 42 Operation unit

Claims (4)

A wireless communication device that communicates with other devices by wireless communication,
Identification information storage means for storing ESN (Electric Serial Number) which is identification information unique to the wireless communication device;
Transmitting means for transmitting communication data to the other device;
Identification information addition means for adding the ESN stored in the identification information storage means to the communication data transmitted by the transmission means;
A wireless communication apparatus comprising:   The wireless communication apparatus according to claim 1, wherein the identification information adding unit further adds information indicating that the ESN is added when the ESN is added to the communication data.   The wireless communication apparatus according to claim 1, further comprising an extraction unit that extracts the ESN from the communication data when the communication data is received. A wireless communication device according to claim 3;
A relay device that relays communication by the wireless communication device;
A plurality of relay devices connected via a network, and a server for controlling communication in the wireless communication device and the relay device;
A wireless communication system comprising:
The wireless communication apparatus includes a means for transmitting the ESN extracted by the extracting means to the outside.

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