JP4459034B2 - COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION FRAME GENERATION METHOD - Google Patents

Description

  The present invention relates to a communication device, a communication system, and a communication frame generation method.

  Some wireless communication systems perform communication between communication devices via a plurality of relay stations. For example, there is a system described in Japanese Patent Application No. 2004-289413, which is an unpublished prior application of the present applicant. In this wireless communication system, communication is performed via a relay station for each of a transmission-side communication device and a reception-side communication device.

  In the wireless communication system, a user using a communication device inputs identification information for identifying a relay station in addition to identification information for identifying the own device (own station) and identification information for identifying the other device (counter station). There must be.

  That is, when establishing communication with the partner device, the communication device must transmit a communication frame in which identification information for identifying the own device and the relay station through which the partner device passes is inserted. Must be set on the communicator.

  Therefore, the user who uses the communication device has to perform input including a large number of items including the identification information and perform complicated operations when starting communication with the partner device.

  If there is an error in the input of the identification information, communication with the other party cannot be performed. For example, if communication is to be started in a state where there is an error in the input of identification information for specifying the relay station to which the own station belongs, a signal indicating that relay is not possible is transmitted from the local station side relay station. As a result, the user can know that the relay station cannot perform the relay and the establishment of communication with the partner apparatus has failed, and that the previous identification information has been input incorrectly.

  In order to establish communication with the counterpart device, the user must input the identification information again in order to input accurate identification information. Re-inputting the identification information is a troublesome work and a complicated work.

  Therefore, the present invention provides a communication device capable of setting identification information without complicated operations when an input of identification information to be input when communication is started is incorrect, and a communication system including the communication device. And a method of generating a communication frame generated in the communication device.

In order to solve the above problem, a communication device according to a first aspect of the present invention is a communication device that performs communication via a relay station,
Identification for inputting identification information including local station identification information for identifying the communication device that is the local station and first relay station identification information for identifying the local relay station to which the communication device belongs Information input means;
Identification information storage means for storing identification information including the first relay station identification information;
Communication frame generation processing means for generating a communication frame by inserting a signal including identification information stored in the identification information storage means;
A signal including second relay station identification information for identifying the local station relay station and relay status information indicating whether or not the signal transmitted from the communication device is relayable from the local station relay station. Is transmitted, the received signal is received and processed, and the second relay station identification information is set in the identification information storage means instead of the first relay station identification information. Setting means,
After transmitting a communication frame in which the first relay station identification information is inserted to the local station relay station, a signal including second relay station identification information is transmitted from the local station relay station, A transmitted signal is received and processed, and a communication frame in which the second relay station identification information is inserted is generated and transmitted.

  According to the communication device of the present invention, when the identification information is input by the identification information input means, the local station side relay station identification information such that the local station side relay station identification information is erroneously input or not input. Even if the proper input is not performed, the correct identification information is automatically set as follows, and a communication frame is generated.

  For example, when there is an error in the first relay station identification information input by the identification information input means, a communication frame including erroneous identification information is generated, and the communication frame including the erroneous information is transmitted to the communication device. Transmits to the local relay station. The local relay station that has received the communication frame including the erroneous information transmits a signal including the second relay station identification information, which is accurate identification information held by itself, to the communication device.

  When a signal including the second relay station identification information is transmitted from the local station repeater to the communication device, the identification information resetting means receives and processes the transmitted signal, and transmits The second relay station identification information that is more accurate identification information is obtained from the received signal. Then, the identification information resetting means sets the second relay station identification information in the identification information storage means. As a result, accurate identification information of the local relay station is automatically set.

  As a result, a communication frame including accurate identification information can be generated without re-inputting the identification information of the local station side relay station properly. Thereby, the input item number of the identification information which should be input when starting communication by the said communication apparatus can be reduced, and the input of identification information can be simplified.

  Further, the identification information resetting means may not relay as the relay status information transmitted from the local relay station when the first relay station identification information does not match the second relay station identification information. The second relay station identification information can be set in the identification information storage means by receiving and processing the information and detecting the relay impossible information.

  According to the communication device of the present invention, the first relay station identification information transmitted based on the storage of the identification information storage means is not appropriate by detecting the relay impossible information transmitted from the local relay station. Detect that.

  When it is detected from the relay impossible information that the first relay station identification information is not appropriate, the second relay station identification information is stored in the identification information storage means instead of the first relay station identification information. Set.

  Accordingly, a communication frame in which the second relay station identification information that is accurate identification information is set is generated. According to the communication device of the present invention, when it is detected that the first relay station identification information is not appropriate due to detection of relay impossible information, a communication frame including the second relay station identification information is generated.

Further, a communication system according to a second aspect of the present invention is configured to include the communication device and the local relay station,
The local relay station has the second relay station identification information for identifying itself, and the first relay station identification information transmitted from the communication device is the second relay station identification information. When the first relay station identification information does not match the second relay station identification information, a signal including relay impossible information is transmitted together with the second relay station identification information when the first relay station identification information does not match the second relay station identification information. It is characterized by transmitting to.

  According to the communication system of the present invention, even if the communication device transmits a communication frame including erroneous identification information of the local station relay station to the local station relay station, the local station relay station identifies itself. A signal including accurate identification information is transmitted to the communication device. Further, the local station repeater transmits the relay impossible information to the communication device when the communication device transmits erroneous identification information of the local station relay station.

  Then, the communication device detects that the transmitted identification information of the relay station on the local station side is incorrect based on the relay disabling information, and uses the signal transmitted from the local station relay station to detect the local station side. Obtain accurate identification information of the relay station. As a result, the communication device automatically sets the accurate identification information of the local relay station, and generates a communication frame including the accurate identification information. Then, the generated communication frame is transmitted from the communication device to the local relay station.

A communication frame generation method according to a third aspect of the present invention is a communication frame generation method in a communication device that performs communication via a relay station,
An identification information input receiving step for receiving input to the communication device of first relay station identification information for identifying the local station side relay station to which the communication device that is the local station belongs;
A first communication frame generating step of generating a communication frame by inserting the first relay station identification information;
A communication frame transmission step of transmitting the communication frame in which the first relay station identification information generated in the communication frame generation step is inserted to the local station side relay station;
The second relay station identification information held by the own-station-side relay station for identifying itself, transmitted by the own-station-side relay station that has received and processed the communication frame transmitted in the communication-frame transmission step. A receiving step for receiving a signal including:
A second communication frame generation step of processing the signal received in the reception step and generating a communication frame by inserting the second relay station identification information included in the received signal. .

  According to the present invention, the first relay station identification information received by the communication device is not appropriate, and after generating and transmitting a communication frame including the inappropriate identification information, the communication frame including the accurate identification information is transmitted. Can be generated.

  That is, when a communication frame including the first relay station identification information, which is identification information that has not been properly input in the communication device, is generated and transmitted, the local relay station that has received the communication frame has accurate identification information. A signal including certain second relay station identification information is transmitted to the communication device. By processing the signal transmitted from the local station relay station in the communication device, second relay station identification information that is accurate identification information is obtained.

  Then, a communication frame including the obtained second relay station identification information is generated in the communication device. Thereby, it is possible to generate a communication frame in which the correct identification information is inserted without accepting re-input of the identification information of the local relay station.

In the reception step, when the first relay station identification information does not match the second relay station identification information, the second relay station identification information is transmitted from the local relay station. Receive a signal containing information that cannot be relayed,
In the second communication frame generation step, when the relay disabling information is detected, the second relay station identification information can be inserted to generate a communication frame.

  According to this invention, when the relay impossible information transmitted from the local relay station is detected, the second relay station identification information received together with the relay impossible information is inserted to generate a communication frame. Thereby, when the first relay station identification information is not appropriate, a communication frame in which the second relay station identification information is inserted is generated.

  According to the present invention, when the identification information for identifying the relay station to which the communication device belongs is not properly input among the identification information to be input to the communication device when communication is started, Accurate identification information can be automatically set in the communication device. Then, a communication frame in which accurate identification information of the relay station is inserted can be generated and transmitted from the communication device.

  Thereby, when the identification information of the relay station to which the communication device belongs is not properly input, it is not necessary to input the identification information again. Thereby, the number of input items of identification information to be input when communication is started can be reduced, and this input work can be simplified.

  An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram of a communication device 30 according to an embodiment of the present invention. The communication device 30 includes a signal transmission function and a reception function.

  When the communicator 30 functions as a transmitter, the communicator 30 transmits an audio signal based on a call sound of a user who uses the communicator 30 and a data signal for data communication toward the receiver of the other party. On the other hand, when the communication device 30 functions as a receiver, the communication device 30 receives an audio signal based on the call sound transmitted to the communication device 30 and also transmits a data signal for data communication transmitted from another communication device that is a counterpart device. Receive.

  As shown in FIG. 1, the communication device 30 includes an antenna 1, a transmission / reception switching unit 2, a transmission unit 3, a reception unit 4, a voice A / D / D / A conversion unit 5, an interface unit 6, a controller 7, and an operation unit 17. A monitor 18, an amplifier 8, a microphone 9, and a speaker 10.

  The operation unit 17 corresponds to input means for inputting condition information regarding the operation of the communication device 30. The operation unit 17 is provided with various operation keys. That is, when the user operates the operation key of the operation unit 17 of the communication device 30 and inputs an operation condition, the communication device 30 can perform an operation based on the input.

  The content of the operation on the operation unit 17 is detected by the controller 7. That is, the controller 7 detects the type of the operated operation key and the content of the operation on the operation key. Then, the contents input by the operation key are determined. Then, the controller 7 controls the communication device 30 so as to perform an operation according to the content input by the operation unit 17.

  Depending on the content of the operation of the operation key, the content input by the operation is displayed on the monitor screen 18 a of the monitor 18. For example, when inputting the local station side identification information for identifying the communication device 30 that is the local station or the counterpart station side identification information for identifying the counterpart station by the operation unit 17, The identification information is displayed on the monitor screen 18a.

  In addition, the monitor screen 18a displays a notification of the operating state of the communication device 30 to the user, a message that prompts the user to input by the operation unit 17, and the like.

  First, a block when the communication device 30 functions as a transmitter will be described. The communication sound by the user of the communication device 30 is converted into an audio signal by the microphone 9, and this audio signal is input to the amplifier 8. The audio signal input to the amplifier 8 is amplified by the amplifier 8 and then output to the audio A / D / D / A converter 5.

  The voice A / D / D / A converter (voice analog / digital / digital / analog converter) 5 has an analog-digital conversion function for converting a voice signal between an analog signal and a digital signal.

  When the communication device 30 functions as a transmitter, the voice A / D / D / A converter 5 has a digital conversion function for converting an analog voice signal into a digital voice signal.

  The audio A / D / D / A converter 5 converts the analog audio signal input from the amplifier 8 into a digital audio signal and outputs the digitally converted audio signal to the transmitter 3.

  A personal computer (hereinafter referred to as “PC”) 15 for data communication is connected to the external input / output terminal 12 connected to the interface unit 6, and a personal computer is connected to the interface unit 6 via the external input / output terminal 12. 15, a data signal for data communication is input. The interface unit 6 outputs the input data signal to the transmission unit 3.

  The transmitter 3 has a modulation function for modulating the input signal. In the example of the communication device 30, a GMSK (Gaussian filtered Minimum Shift Keying) modulation method is adopted as a method by which the transmission unit 3 modulates a signal. The GMSK modulation method is one of digital modulation methods, and is a modulation method that narrows the band by passing a binary input signal once through a filter called a Gaussian filter and then performing frequency modulation. The transmission unit 3 performs a process of modulating the input audio signal and data signal by the GMSK modulation method.

  The transmission unit 3 outputs the signal subjected to the modulation process to the transmission / reception switching unit 2. When the communication device 30 functions as a transmitter, the transmission / reception switching unit 2 is formed with a circuit that guides the signal input from the transmission unit 3 to the antenna 1. Then, the signal input to the transmission / reception switching unit 2 is output to the antenna 1 and transmitted from the antenna 1 to the receiver that is the counterpart of the communication device 30.

  The controller 7 controls the operation of the communication device 30. The controller 7 includes a CPU (Central Processing Unit) 7a, a ROM (Read Only Memory) 7b, and a RAM (Read / Write Memory) 7c.

  A control program for the controller 7 to control the operation of the communication device 30 is stored in the ROM 7b. When the communication device 30 is used as a transmitter, the controller 7 controls the communication device 30 to function as a transmitter. The operation in which the interface unit 6 outputs data for data communication to the transmission unit 3 is performed under the control of the controller 7.

  The RAM 7 c of the controller 7 stores data for generating the communication frame F transmitted by the communication device 30. For example, the RAM 7c stores the local station side identification information and the counterpart station side identification information, which are data for configuring the header portion H of the communication frame F.

  The local station identification information includes local station identification information for identifying the communication device 30 as the local station and local station side relay station identification information for identifying the relay station to which the communication device 30 belongs. The partner station side identification information includes partner station identification information for identifying another communication device that is a counterpart of the communication device 30, and partner station relay station identification information for identifying the relay station to which the partner station belongs. It is out.

  When the user operates the operation unit 17 to input the local station side identification information and the counterpart station side identification information, the input local station side identification information and the counterpart station side identification information are input to the controller 17 and stored in the RAM 7c. .

  These pieces of identification information are stored in an identification information storage table developed in the RAM 7c. The local station side identification information and the counterpart station side identification information stored in the identification information storage table are inserted into a communication frame transmitted by the communication device 30, as will be described later. Of the identification information stored in the identification information storage table, the local station relay station identification information is correctly input as described later if an appropriate input such as an incorrect input is not performed. Correct identification information is reset.

  Further, for example, a USB (Universal Serial Bus) interface is connected to the controller 7, and data of an external device connected to the USB interface is input to the controller 7. A personal computer can be connected to the USB interface as an external device, and the communication device 30 can be controlled by the personal computer.

  Here, the communication frame F of the signal transmitted by the communication device 30 will be described with reference to FIG. FIG. 2 shows an outline of the configuration of the communication frame F of the signal transmitted by the communication device 30.

  As shown in FIG. 2, the communication frame F is composed of a header part H at the head and a data part D following the header part. The header part H is a part used to connect to another communication device that is a communication partner, and includes an information signal for establishing communication with the other communication device.

  The bit synchronization included in the header portion H is a bit synchronization signal for synchronizing the input signal. The frame synchronization included in the header portion H is a frame synchronization signal indicating that it is a signal.

  The identification information (ID) part included in the header part H is data for identifying the local station side identification information for identifying the communication station 30 side that is the local station side, and for identifying the other communication apparatus side that is the counterpart station side. The data of the other station side identification information is inserted.

  The destination relay station ID shown in FIG. 2 is partner station-side relay station identification information for identifying the partner station-side relay station. The source relay station ID shown in FIG. 2 is local station relay station identification information for specifying the local relay station.

  Further, the partner station ID is identification information for specifying another communication device as a partner, and the host station ID is identification information for specifying the host station (communication device 30). P_FCS represents a frame check sequence as to whether the header part H is valid.

  The data part D is configured by alternately repeating audio frames and data frames. The voice frame is a frame into which a voice signal for voice communication is inserted, and voice data input from the voice A / D / D / A converter 5 is inserted. The data frame is a frame in which a data signal for data communication is inserted, and data input from the interface unit 6 is inserted.

  Of the communication frame F described above, data or a signal constituting the header part H is output from the controller 7 to the transmission part 3. Data or signals constituting the data part D are output from the audio A / D / D / A conversion part 5 or the interface part 6 to the transmission part 3 under the control of the controller 7.

  Next, a block when the communication device 30 functions as a receiver will be described. To the communication device 30 as a receiver, a voice signal of a call sound and a data signal for data communication are transmitted from the transmitter of the other party. The signal transmitted to the communication device 30 constitutes the communication frame F described with reference to FIG.

  The antenna 1 receives a radio signal transmitted to the communication device 30. A radio signal received by the antenna 1 is input to the transmission / reception switching unit 2. When the communication device 30 functions as a receiver, the transmission / reception switching unit 2 is formed with a circuit that guides a signal received by the antenna 1 to the reception unit 4.

  The receiving unit 4 has a tuning function for selecting and receiving a signal of a specific communication channel. In the receiving unit 4, a frequency band of a radio signal to be received is set. Then, the reception signal of the channel having the frequency set in the receiving unit 4 is input from the antenna 1 to the receiving unit 4 through the transmission / reception switching unit 2.

  The receiving unit 4 has a demodulation function for demodulating the input received signal. In the example of the communication device 30, the receiving unit 4 performs GMSK demodulation. Data of the header part H included in the communication frame F of the received signal demodulated by the receiving unit 4 is input to the controller 7.

  The controller 7 determines whether or not the received signal has been transmitted to the communication device 30 based on the information of the header part H. If the controller 7 does not determine that the received signal has been transmitted to the communication device 30, the controller 7 discards the data in the header portion H. On the other hand, when the controller 7 determines that the received signal has been transmitted to the communication device 30, the controller 7 performs control to sequentially process the received communication frames F.

  Of the data included in the data portion D of the received signal, the audio data included in the audio frame is input to the audio A / D / D / A converter 5, and the data communication data included in the data frame is Input to the interface unit 6.

  Data for data communication input to the interface unit 6 is processed by the interface unit 6 under the control of the controller 7 and output to the external input / output terminal 12. Data for data communication input to the external input / output terminal 12 is output from the external input / output terminal 12 to the personal computer 15.

  The voice A / D / D / A converter (voice analog / digital / digital / analog converter) 5 has an analog-digital conversion function for converting a voice signal between an analog signal and a digital signal. When the communication device 30 functions as a receiver, the audio A / D / D / A converter 5 has an analog conversion function for converting a digital audio signal into an analog audio signal.

  Then, when a digital audio signal is input from the receiving unit 4, the audio A / D / D / A conversion unit 5 converts the input digital audio signal into an analog audio signal under the control of the controller 7. To do.

  The audio signal converted into an analog signal by the audio A / D / D / A converter 5 is input to the amplifier 8. The amplifier 8 amplifies the input audio signal and outputs it to the speaker 10. The speaker 10 outputs the call sound of the user of the other transmitter based on the input audio signal.

  As described above, the controller 7 includes the CPU 7a, the ROM 7b, and the RAM 7c. A control program for the controller 7 to control the communication device 30 to function as a receiver is stored in the ROM 7b.

  When the communication device 30 functions as a transmitter, it is necessary to process a signal transmitted from the relay station in the initial operation for establishing communication with the other receiver, or communication with the receiver. When it is necessary to process the signal transmitted from the relay station in the process of performing the above, the function of the communication device 30 as a receiver is used.

  Next, a wireless communication system in which the communication device 30 described above communicates with other communication devices will be described with reference to FIG. FIG. 3 shows a communication system CS including the communication device 30. The communication system CS shown in FIG. 3 includes a plurality of communication devices including the communication device 30 and a plurality of relay stations. The communication device 31 shown in FIG. 3 is configured in the same manner as the communication device 30, has the same function as the communication device 30, and functions as a transmitter and a receiver.

  As shown in FIG. 3, the communication device 30 described above belongs to the first relay station RS1, and communicates with other communication devices 31 via the first relay station RS1. The communication device 31 belongs to the second relay station RS2, and communicates with the communication device 30 via the second relay station RS2. The first relay station RS1 and the second relay station RS2 constitute a relay station network RSN, and signals are transmitted and received between the first relay station RS1 and the second relay station RS2.

  For example, a signal transmitted from the communication device 30 to another communication device 31 is transmitted to the first relay station RS1 as indicated by T1 in FIG. The signal transmitted by the communication device 30 is transmitted from the first relay station RS1 to the second relay station RS2, and transmitted from the second relay station RS2 to the communication device 31.

  The signal transmitted from the other communication device 31 to the communication device 30 is transmitted to the second relay station RS2. And the signal which the other communication apparatus 31 transmitted is transmitted to 1st relay station RS1 from 2nd relay station RS2, and as shown to T2 of FIG. 3, it transmits to the communication apparatus 30 from 1st relay station RS1. .

  As shown in FIG. 3, ABC is assigned to the communication device 30 as an ID (identification information). The communication device 31 is assigned DEF as an ID. Further, XYZ is assigned as the ID to the first relay station RS1. VWX is assigned as the ID to the second relay station RS2.

  The communication device 30 shown in FIG. 3 and the first relay station RS1 to which the communication device 30 belongs constitute a communication system according to an embodiment of the present invention.

  Next, the first relay station RS1 and the second relay station RS2 will be described with reference to FIG. In FIG. 4, the first relay station RS1 and the second relay station RS2 are collectively represented as the relay station RS. FIG. 4 is a block diagram showing an outline of the configuration of the relay station RS.

  The relay station RS includes a transmission antenna 51, a reception antenna 52, a transmission unit 53, a reception unit 54, and a controller 57. The transmission antenna 51 transmits a signal to a communication device belonging to the relay station RS and other relay stations. The transmission antenna 51 transmits the signal input from the transmission unit 53.

  The transmitter 53 performs processing such as modulation to form the signal input from the controller 57 as a signal to be transmitted to a communication device belonging to the relay station RS or as a signal to be transmitted to another relay station. .

  The receiving antenna 52 receives a signal transmitted from a communication device belonging to the relay station RS or another relay station. A signal received by the receiving antenna 52 is input to the receiving unit 54. The receiving unit 54 performs processing such as demodulation to form the input signal into a signal that can be processed by the controller 57.

  The controller 57 controls the operation of the relay station RS. That is, the controller 57 performs control for reception processing of a signal transmitted to the relay station RS and transmission processing for transmitting a signal from the relay station RS. The controller 57 includes a CPU 57a, a ROM 57b, and a RAM 57c, and is configured to be able to control the operation of the relay station RS.

  And the controller 57 has the identification information of the relay station RS for specifying itself. As for the first relay station RS1 shown in FIG. 3, the controller 57 holds “XYZ” as an ID for identifying itself. Further, for the second relay station RS2, the controller 57 has “VWX” as an ID for identifying itself.

  Next, the operation of the relay station RS will be described with reference to FIG. Here, the operation of the relay station will be described using an example of the first relay station RS1 and the communication device 30. For example, when the communication device 30 tries to start communication with another communication device 31, the communication device 30 performs communication in which the local station side identification information and the counterpart station side identification information are inserted into the header portion H in the initial operation. The frame F is transmitted to the first relay station RS1.

  The first relay station RS1 receives the transmitted communication frame F, and the controller 57 processes the data of the identification information included in the header portion H. The controller 57 determines from the data of the header portion H that the partner station of the communication device 30 is the communication device 31, the relay station to which the communication device 31 belongs is the second relay station RS2, and the like.

  When the first relay station RS1 receives and processes the header portion H of the communication frame F transmitted from the communication device 30, the first relay station RS1 transmits a signal including a predetermined communication frame to the communication device 30.

  The signal transmitted from the first relay station RS1 to the communication device 30 includes identification information “XYZ” for identifying itself and relay status information indicating whether or not the signal transmitted from the communication device 30 can be relayed. It is out. The relay status information includes a relay enable flag indicating that relaying by the first relay station RS1 is possible and a relay disable flag indicating that relaying by the first relay station RS1 is impossible.

  When the controller 57 determines that the signal is correctly inserted into the header portion H transmitted by the communication device 30 and there is no problem in relaying, the first relay station RS1 sends a signal including a relayable flag together with its own identification information “XYZ”. Transmit to the communication device 30.

  On the other hand, if the controller 57 determines that relaying is not possible because the data is not correctly inserted in the header portion H transmitted by the communication device 30, the first relay station RS1 cannot relay together with its own identification information “XYZ”. A signal including a flag is transmitted to the communication device 30.

  For example, if it is determined that the identification information “XYZ” held by the controller 57 does not match the local-station-side relay station identification information of the header portion H transmitted by the communication device 30, the first relay station RS1 cannot relay. The flag is transmitted to the communication device 30.

  Next, an example of the operation of the communication system CS described above will be described with reference to FIGS. 3 and 5 to 8. FIG. 5 is a diagram for explaining the input of identification information to the communication device 30. FIG. 6 shows a communication frame F1 that the communication device 30 transmits to the first relay station RS1 in the initial operation.

  FIG. 7 shows a communication frame FR that the first relay station RS1 transmits to the communication device 30 in the initial operation. FIG. 8 shows a communication frame F2 transmitted by the communication device 30 and into which identification information is correctly inserted. The following description will focus on the initial operation when the communication device 30 is about to start communication with another communication device 31.

  A user of the communication device 30 operates the operation unit 17 to perform an operation for starting communication with the communication device 31. First, the user operates the operation unit 17 to identify the local station side identification information for identifying the communication station 30 side that is the local station side, and the counterpart station side for identifying the communication apparatus 31 side that is the counterpart station side. Input identification information.

  When the user performs a required operation for inputting the identification information using the operation unit 17, a message prompting the user to input the identification information is displayed on the monitor screen 18a.

  As shown in FIG. 5A, the monitor screen 18a displays an inquiry about the local station ID, which is identification information for specifying the communication device 30 (FIG. 5A, “own station ID”). In response to this display, the user inputs “ABC” as the ID of the communication device 30. In response to this input, as shown in FIG. 5A, the input ID is displayed on the monitor screen 18a (FIG. 5A, “ABC”).

  Next, as shown in FIG. 5 (b), an inquiry of the local station side relay station ID for specifying the relay station of the communication device 30 is displayed on the monitor screen 18a (FIG. 5 (b), “own station” Side relay station ID "). In response to this display, the user inputs “XYA” as the ID of the first relay station RS1 that is the relay station of the communication device 30. In response to this input, as shown in FIG. 5B, the input ID is displayed on the monitor screen 18a (FIG. 5B, “XYA”). The ID input to the communication device 30 as the ID of the first relay station RS1 corresponds to the first relay station identification information.

  Next, as shown in FIG. 5C, an inquiry about the partner station ID for specifying the partner station to communicate with is displayed (FIG. 5C, “partner station ID”). In response to this display, the user inputs “DEF” as the ID of the communication device 31 of the other party to communicate. In response to this input, as shown in FIG. 5C, the input ID is displayed on the monitor screen 18a (FIG. 5C, “DEF”).

  Next, as shown in FIG. 5 (d), an inquiry of the partner station side relay station ID for specifying the relay station of the communication device 31 is displayed (FIG. 5 (d), “partner station side relay station ID”). "). In response to this display, the user inputs “VWX” as the ID of the second relay station RS2 that is the relay station of the communication device 31. In response to this input, as shown in FIG. 5D, the input ID is displayed on the monitor screen 18a (FIG. 5D, “VWX”).

  The identification information input as described above is stored in the identification information storage table of the RAM 7c of the controller 7 of the communication device 30. When the input of the identification information is completed, the controller 7 of the communication device 30 performs a process of generating the communication frame F1 transmitted by the communication device 30. As shown in FIG. 6, the communication frame F1 includes a header portion H1. As shown in FIG. 6, identification information for specifying the local station side and the counterpart station side is inserted in the header portion H1.

  In generating the header portion H1, the controller 7 refers to the identification information data stored in the identification information storage table of the RAM 7c, that is, the identification information data input by the procedure described with reference to FIG. In FIG. 6, only the frame in which the identification information is inserted is shown for the header portion H1, and the frame in which another signal is inserted is omitted.

  Among the identification information of the header portion H1 generated by the controller 7, the identification information “XYA” that specifies the first relay station RS1 (source relay station) is the correct identification information “XYZ” due to an input error. It does not match. And the communication apparatus 30 transmits communication frame F1 provided with the header part H1 containing this incorrect identification information to 1st relay station RS1.

  The first relay station RS1 receives the communication frame F1 transmitted from the communication device 30, and processes a signal or data included in the header portion H1. The first relay station RS1 determines that the identification information for identifying the first relay station RS1 is “XYA” in the received data of the header part H, and does not match the identification information “XYZ” held by itself. .

  And 1st relay station RS1 transmits the signal which consists of communication frame FR to the communication apparatus 30 as shown to T2 of FIG. As shown in FIG. 7, the communication frame FR includes a header portion HR and a data portion DR. In FIG. 7, only the frame in which the identification information is inserted is shown for the header portion HR, and the frame in which another signal is inserted is omitted.

  As shown in FIG. 7, the header part HR transmitted by the first relay station RS1 includes, as identification information, a destination relay station ID, a source relay station ID, a partner station (communication device 30) ID, and the own station (first Relay station RS1) ID is inserted.

  When the first relay station RS1 transmits a signal to the communication device 30, there is no destination relay station and no source relay station, and an ID for specifying these is not inserted as shown in FIG.

  Then, as shown in FIG. 7, ID “ABC” of the communication device 30 is inserted as the counterpart station ID, and “XYZ” is inserted as the own station ID, in the header portion HR. The identification information “XYZ” identifying itself transmitted from the first relay station RS1 to the communication device 30 corresponds to second relay station identification information.

  Further, the data part DR transmitted from the first relay station RS1 to the communication device 30 includes a relay disable flag as relay status information as shown in FIG. With this relay disable flag, the first relay station RS1 can notify the communication device 30 that it cannot relay.

  The communication device 30 receives and processes the communication frame FR transmitted from the first relay station RS1. Then, the data of the header part HR and the data part DR of the communication frame FR is processed by the controller 7 of the communication device 30.

  The controller 7 detects the identification information “XYZ” transmitted by the first relay station RS1 from the data of the header part HR. Further, the controller 7 detects the relay impossible flag included in the data part DR, and detects that the relay by the first relay station RS1 cannot be performed and that the establishment of communication with the communication device 31 has failed.

  Further, the controller 7 determines that the identification information “XYA” of the first relay station RS1 transmitted earlier is an error due to the identification information “XYZ” transmitted from the first relay station RS1 and the relay impossible flag, and the identification information in the RAM 7c. It is detected that the identification information “XYA” of the first relay station stored in the storage table is incorrect.

  Then, the controller 7 resets the accurate identification information “XYZ” of the first relay station RS1 in the identification information storage table of the RAM 7c instead of the erroneous identification information “XYA” of the first relay station RS1.

  Then, the controller 7 refers to the identification information storage table in which the identification information of the first relay station RS1 is accurately set, and generates the communication frame F2 including the header portion H2 illustrated in FIG. As shown in FIG. 8, accurate identification information “XYZ” of the first relay station RS1 is inserted into the header portion H2 of the communication frame F2. FIG. 8 shows only the frame in which the identification information is inserted in the header portion H2, and does not show the frame in which another signal is inserted.

  The communication device 30 transmits a communication frame F2 including the header portion H2 illustrated in FIG. 8 to the first relay station RS1. The first relay station RS1 receives and processes the signal including the header portion H2 transmitted from the communication device 30, and transmits the signal to the second relay station RS2.

  The second relay station RS2 transmits a signal including the header part H2 transmitted from the first relay station RS1 to the other communication device 31. Then, when the other communication device 31 receives and processes the transmitted header portion H <b> 2, communication is established between the communication device 30 and the other communication device 31. In this state, the user of the communication device 30 can transmit the voice of the call sound input via the microphone 9 and the data output from the personal computer 15 to the other communication device 31.

  According to the communication system CS described above, among the identification information that should be input to the communication device 30 when starting communication with the other communication devices 31, the identification information that identifies the first relay station RS1 to which the communication device 30 belongs. Even when an incorrect input or an appropriate input such as no input is made, accurate identification information for identifying the first relay station RS1 is automatically set in the communication device 30.

  That is, when the communication device 30 transmits the communication frame F1 in which the identification information of the first relay station RS1 is not properly set, the first relay station RS1 receives and processes the communication frame F1, and the first relay station RS1 A communication frame FR including accurate identification information and a relay impossible flag is transmitted to the communication device 30.

  And the communication apparatus 30 received and processed the communication frame FR transmitted from the first relay station RS1, and the identification information of the first relay station RS1 was not properly set in the communication frame F1 transmitted earlier. The correct identification information that identifies the first relay station RS1 is detected. The accurate identification information of the first relay station RS1 is automatically set in the communication device 30, and the communication frame F2 including the accurate identification information is generated by the communication device 30.

  As described above, according to the communication system CS described above, accurate identification information is automatically generated even if the identification information of the first relay station RS1 to which the communication device 30 belongs should be input properly. Will be reset to

  Therefore, it is not necessary for the user to input the identification information of the first relay station RS1 again. Thereby, the number of input items of identification information to be input when starting communication can be reduced, and the input work performed by the user can be simplified.

  In the above description, the example in which the GMSK modulation method is employed as the signal modulation method for the communication device to transmit and receive signals has been described. In practicing the present invention, other modulation schemes can be employed. In practicing the present invention, a QPSK modulation method and other modulation methods may be employed as a signal modulation method.

  In the above description, an example in which the data fetched from the personal computer 15 to the communication device 30 is transmitted by a data frame has been described. In practicing the present invention, digital data output from a device other than a personal computer can be taken into a communication device, and this data can be inserted into a data frame for transmission. For example, GPS (Global Positioning System) data can be captured by the communication device according to the present invention, and this data can be inserted into a data frame and transmitted.

It is a block diagram of the communication apparatus which functions as a transmitter of one Embodiment of this invention. It is a figure which shows the communication frame of the signal which a communication apparatus transmits. It is a figure which shows schematic structure of the communication system with which a communication apparatus communicates. It is a block diagram of a relay station. It is a figure explaining the input of the identification information for specifying the local station, and the identification information for specifying the other station. It is a figure which shows the communication frame which a communication apparatus transmits to a relay station in initial operation. It is a figure which shows the communication frame which a relay station transmits to a communication apparatus in initial stage operation | movement. It is a figure which shows the communication frame with which the identification information was correctly set transmitted by the communication apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Antenna 2 Transmission / reception switching part 3 Transmission part 4 Reception part 5 Audio | voice A / D * D / A conversion part 6 Interface part 7 Controller 7a CPU
7b ROM
7c RAM
8 Amplifier 9 Microphone 10 Speaker 12 External Input / Output Terminal 15 Data Communication Personal Computer 17 Operation Unit 18 Monitor 18a Monitor Screen 30, 31 Communication Device 51 Transmitting Antenna 52 Receiving Antenna 53 Transmitting Unit 54 Receiving Unit 57 Controller 57a CPU
57b ROM
57c RAM

Claims (5)

A communication device that performs communication via a relay station,
Identification for inputting identification information including local station identification information for identifying the communication device that is the local station and first relay station identification information for identifying the local relay station to which the communication device belongs Information input means;
Identification information storage means for storing identification information including the first relay station identification information;
Communication frame generation processing means for generating a communication frame by inserting a signal including identification information stored in the identification information storage means;
A signal including second relay station identification information for identifying the local station relay station and relay status information indicating whether or not the signal transmitted from the communication device is relayable from the local station relay station. Is transmitted, the received signal is received and processed, and the second relay station identification information is set in the identification information storage means instead of the first relay station identification information. Setting means,
After transmitting a communication frame in which the first relay station identification information is inserted to the local station relay station, a signal including second relay station identification information is transmitted from the local station relay station, A communication apparatus characterized by receiving and processing a transmitted signal, and generating and transmitting a communication frame in which the second relay station identification information is inserted.   The identification information resetting means includes relay disable information as the relay status information transmitted from the local relay station when the first relay station identification information does not match the second relay station identification information. 2. The communication device according to claim 1, wherein the second relay station identification information is set in the identification information storage unit by receiving and processing and detecting the relay impossible information. A communication system comprising the communication device according to claim 1 or 2, and the local relay station,
The local relay station has the second relay station identification information for identifying itself, and the first relay station identification information transmitted from the communication device is the second relay station identification information. When the first relay station identification information does not match the second relay station identification information, a signal including relay impossible information is transmitted together with the second relay station identification information when the first relay station identification information does not match the second relay station identification information. The communication system characterized by transmitting to. A method of generating a communication frame in a communication device that performs communication via a relay station,
An identification information input receiving step for receiving input to the communication device of first relay station identification information for identifying the local station side relay station to which the communication device that is the local station belongs;
A first communication frame generating step of generating a communication frame by inserting the first relay station identification information;
A communication frame transmission step of transmitting the communication frame in which the first relay station identification information generated in the communication frame generation step is inserted to the local station side relay station;
The second relay station identification information held by the own-station-side relay station for identifying itself, transmitted by the own-station-side relay station that has received and processed the communication frame transmitted in the communication-frame transmission step. A receiving step for receiving a signal including:
A second communication frame generation step of processing the signal received in the reception step and generating a communication frame by inserting the second relay station identification information included in the received signal. A method for generating a communication frame. In the receiving step, when the first relay station identification information does not match the second relay station identification information, relaying is not possible together with the second relay station identification information transmitted from the local relay station. Receiving a signal containing information,
5. The communication frame according to claim 4, wherein, in the second communication frame generation step, when the relay disabling information is detected, the communication frame is generated by inserting the second relay station identification information. Generation method.

Images