JP5299148B2 - COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND PROGRAM - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To excellently perform communication in a communication system of a conventional system. <P>SOLUTION: A PC radio communication apparatus discriminates whether a destination ID is registered to a call information table which is stored to a storage part (step S103). When the destination ID is registered to the call information table (Yes: step S103), a reception rejection flag is turned ON and the destination ID is registered (step S104). When the destination ID is not registered to the call information table (No: step S103), the reception rejection flag is turned OFF and the destination ID is registered (step S105). The PC radio communication apparatus calls the destination where the reception rejection flag is turned OFF. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a communication device, a communication system, and a program.

  Wireless communication includes a method of performing communication between wireless communication devices 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, there may be a plurality of repeaters in a range where radio waves of one wireless communication device can reach, and there is a possibility that a communication packet may be duplicated due to competition between the plurality of repeaters. .

  In order to solve such a problem, when a plurality of repeaters receive radio waves from a wireless communication device at the same time, a wireless communication system that automatically selects a repeater to communicate and performs normal communication has been proposed (for example, Patent Document 1).

JP 2008-182547 A

  In the wireless communication system described in Patent Literature 1, a server is provided on a network, and communication between wireless communication devices is managed by the server. Therefore, the technique described in Patent Document 1 cannot be applied to a conventional communication system in which a server for managing communication between wireless communication devices is not provided on a network.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a communication apparatus, a communication system, and a program for performing suitable communication in a conventional communication system.

In order to solve the above problems, a communication device according to the first aspect of the present invention provides:
A communication device that can communicate with the communication device via a relay device that relays a signal from the communication device and a network to which the relay device is connected,
Receiving means for receiving a connection request from the communication device via said network and the relay device,
When the receiving unit receives the connection request of the same communication device from a plurality of the relay devices, the communication with the communication device is performed via the relay device that has transmitted the connection request received first by the receiving unit. Communication means for starting
When the communication device that relays communication by one relay device among the relay devices is switched from one communication device to another communication device that is different from the one communication device, the other relay device is different from the one relay device. If the relay device is relaying communication of the one communication device, means for continuing communication with the one communication device via the other relay device;
It is characterized by providing.

  In addition, when communication with the communication device that has been performed through one of the relay devices is disconnected, another relay device different from the one relay device relays communication of the communication device. In this case, it may be configured to further include means for continuing communication with the communication device via the other relay device.

A communication system according to a second aspect of the present invention is:
A communication device;
With multiple communicators,
A plurality of relay devices connected to the communication device via a network and communicating with the communication device by wireless communication to relay communication between the communication device and the communication device;
A communication system comprising:
The communication device is
A connection request transmitting means for transmitting a connection request for the communication device to any of the plurality of relay devices;
The communication device
Receiving means for receiving the connection request from the communication device via the relay device and the network;
When the receiving unit receives the connection request of the same communication device from a plurality of the relay devices, the communication with the communication device is performed via the relay device that has transmitted the connection request received first by the receiving unit. Communication means for starting
When the communication device that relays communication by one relay device among the relay devices is switched from one communication device to another communication device that is different from the one communication device, the other relay device is different from the one relay device. Means for continuing communication with the one communication device via the other relay device when the relay device relays the communication of the one communication device .

The program according to the third aspect of the present invention is:
A computer,
With multiple communicators,
A plurality of relay devices that are connected to the computer via a network, communicate with the communication device by wireless communication, and relay communication between the computer and the communication device;
In a communication system composed of:
The computer,
Receiving means for receiving a connection request from the communication device via the relay device and the network;
When the receiving unit receives the connection request of the same communication device from a plurality of the relay devices, the communication with the communication device is performed via the relay device that has transmitted the connection request received first by the receiving unit. Communication means to start,
When the communication device that relays communication by one relay device among the relay devices is switched from one communication device to another communication device that is different from the one communication device, the other relay device is different from the one relay device. If the relay device relays communication of the one communication device, means for continuing communication with the one communication device via the other relay device;
It is made to function as.

  According to the present invention, communication can be suitably performed in a conventional communication system.

It is a figure which shows the structural example of the communication system which concerns on embodiment of this invention. It is a block diagram which shows the structure of a radio | wireless communication apparatus. It is a block diagram which shows the structure of PC radio | wireless communication apparatus. It is a flowchart which shows the operation | movement of the reception process which a PC radio | wireless communication apparatus performs. It is a flowchart which shows the operation | movement of a connection request | requirement table update process. It is a figure which shows the specific example of a call information table. It is a flowchart which shows the operation | movement of a table update process at the time of a cutting request. It is a figure which shows the specific example of a call information table.

  An embodiment of a communication system 100 according to the present invention will be described with reference to the drawings. FIG. 1 shows a configuration example of a communication system 100 according to an embodiment of the present invention.

  As shown in FIG. 1, the communication system 100 includes a plurality of wireless communication devices 10 (10A, 10B, and 10C in the drawing), a plurality of repeaters 20 (20A and 20B in the drawing), and a PC wireless communication device 30. Is composed of. The plurality of repeaters 20 </ b> A and 20 </ b> B and the PC wireless communication device 30 are connected via the network 40.

  The wireless communication device 10 can perform a voice call by directly communicating with another wireless communication device 10 by wireless communication. Further, the wireless communication device 10 can communicate with other wireless communication devices 10 via the repeater 20 to perform a voice call. In this embodiment, the wireless communication device 10 can be connected to the network 40 via the repeater 20 and communicate with other wireless communication devices 10 and the PC wireless communication device 30 via the network 40. In FIG. 1, three wireless communication apparatuses 10A, 10B, and 10C are shown, but this number is arbitrary as long as at least two wireless communication apparatuses are used. The wireless communication device 10 can also perform data communication with the PC wireless communication device 30 via the network 40.

  The repeater 20 receives a communication frame from the wireless communication device 10 in the cover area to the other wireless communication device 10 or the PC wireless communication device 30, and relays communication to the other wireless communication device 10 or the PC wireless communication device 30. To do. Further, the communication frame for the wireless communication device 10 in the cover area is received from the network 40, and the communication for the wireless communication device 10 is relayed. The repeater 20 adds its own identification information when relaying a communication frame. In FIG. 1, two repeaters 10A and 10B are shown, but this number is arbitrary as long as at least two repeaters are used.

  The PC wireless communication device 30 realizes the same function as the wireless communication device 10 by causing a computer such as a personal computer to read the program. The PC wireless communication device 30 communicates with the wireless communication device 10 via the network 40 and the repeater 20. Further, another PC wireless communication device may be provided on the network 40 so as to be able to communicate with another PC wireless communication device.

  The network 40 is, for example, the Internet. In addition, the network 40 may be a local area network (LAN), a circuit switching network, a packet switching network, or a dedicated network. Further, the network 40 is not limited to a wired line, and may be a wireless communication network such as a wireless LAN.

  FIG. 2 is a block diagram illustrating a configuration of the wireless communication device 10. As shown in FIG. 2, the wireless communication device 10 includes an antenna 1, a transmission / reception switching unit 2, a transmission unit 3, a reception unit 4, and audio A / D / D / A (analog / digital / digital / analog). A conversion unit 5, a controller 6, an amplifier 7, a microphone 8, a speaker 9, a display unit 11, and an operation unit 12 are provided.

  The antenna 1 receives a signal wave transmitted from another wireless communication device 10 or PC wireless communication device 30 as a communication partner and relayed by the repeater 20. The antenna 1 receives a signal wave directly transmitted from another wireless communication device 10. The antenna 1 transmits a signal wave toward a repeater 20 that relays the signal wave to another wireless communication device 10 or a PC wireless communication device 30 that is a communication partner. The antenna 1 directly transmits a signal wave toward another wireless communication device 10.

  The transmission / reception switching unit 2 outputs the signal wave for transmission input from the transmission unit 3 to the antenna 1. In addition, the transmission / reception switching unit 2 inputs a signal wave received by the antenna 1 and outputs the signal wave to the reception unit 4.

  The transmission unit 3 modulates the input audio signal and data signal based on a four-value FSK (Frequency Shift Keying) modulation method, and outputs the modulated audio signal and data signal to the transmission / reception switching unit 2. The audio signal is supplied from the audio A / D / D / A converter 5, and the data signal is supplied from the controller 6.

  The receiving unit 4 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 6. The receiving unit 4 also has a demodulation function that demodulates the input received signal. Here, the receiving unit 4 performs demodulation based on the quaternary FSK modulation method.

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

  The controller 6 controls the operation of the wireless communication device 10. The controller 6 includes a CPU (Central Processing Unit) 6a, a ROM (Read Only Memory) 6b, and a RAM (Read / Write Memory) 6c.

  The ROM 6 b stores a control program for the controller 6 to control the operation of the wireless communication device 10. Based on this control program, the CPU 6a controls the wireless communication device 10 to function as a transmitter and a receiver. The RAM 6c functions as a work area for the CPU 6a.

  When the transmission unit 3 transmits a communication frame including an audio signal to a communication partner, the controller 6 adds an ID for identifying its own wireless communication device 10 and information on a transmission destination. This communication frame includes a connection request to the communication partner.

  The amplifier 7 amplifies the audio signal supplied from the microphone 8 and supplies the amplified audio signal to the audio A / D / D / A converter 5. The amplifier 7 amplifies the audio signal supplied from the audio A / D / D / A converter 5 and supplies the amplified audio signal to the speaker 9.

  The microphone 8 obtains the user's call sound and supplies it to the amplifier 7 as an audio signal.

  The speaker 9 outputs the communication sound of the communication partner based on the audio signal supplied from the amplifier 7.

  The display unit 11 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 10 to the user, a message for prompting the user to input by the operation unit 12, and the like are displayed.

  The operation unit 12 is a device for inputting condition information regarding the operation of the wireless communication device 10. The operation unit 12 is provided with various operation keys. When the user operates the operation keys to perform various inputs, the wireless communication apparatus 10 can perform operations based on the inputs. The content of the operation on the operation unit 12 is detected by the controller 6. That is, the controller 6 detects the type of the operated operation key and the content of the operation on the operation key. And the controller 6 discriminate | determines the content input with the operation key, and controls the radio | wireless communication apparatus 10 so that operation according to the input content may be performed.

  FIG. 3 is a block diagram illustrating a configuration of the PC wireless communication device 30. As shown in FIG. 3, the PC wireless communication device 30 includes a control unit 31, a display unit 32, an operation unit 33, a communication unit 34, a storage unit 35, a voice processing unit 36, a microphone 37, and a speaker. 38. Each unit of the PC wireless communication device 30 is connected via a bus. The PC wireless communication apparatus 30 according to this embodiment is a general-purpose computer that stores a program that causes a computer to function as the PC wireless communication apparatus 30 that can communicate with the wireless communication apparatus 10 via a network. The PC wireless communication device 30 may be a dedicated device.

  The control unit 31 includes a CPU (Central Processing Unit) and the like, and controls the operation of the entire PC wireless communication device 30 according to a program stored in the storage unit 35. For example, in response to a connection request from the wireless communication device 10 received via the repeater 20 and the network 40, processing for performing a voice call with the wireless communication device 10 is executed.

  The display unit 32 includes an LCD (Liquid Crystal Display) or the like, and displays various screens under the control of the control unit 31. For example, an application GUI (Graphical User Interface) for communicating with the wireless communication apparatus 10 is displayed.

  The operation unit 33 includes a keyboard, a mouse, and the like, and accepts user operations. The operation unit 33 inputs a signal corresponding to the operation to the control unit 31 when the operation of the keyboard and the mouse is detected.

  The communication unit 34 is an interface for connecting the PC wireless communication device 30 to the network 40. The PC wireless communication device 30 communicates with the wireless communication device 10 via the communication unit 34.

  The storage unit 35 includes a RAM (Random Access Memory), a ROM (Read Only Memory), a flash memory, a hard disk, and other storage media. The RAM functions as a work area for the control unit 31. The storage unit 35 stores a program for causing a computer to function as the PC wireless communication device 30. The control part 31 implement | achieves a function required for this invention by reading this program. The storage unit 35 stores a call information table for managing communication with the wireless communication device 10.

  The audio processing unit 36 is a D / A converter that converts a digital audio signal received from the wireless communication apparatus 10 into an analog audio signal, or an A / D conversion that converts an analog audio signal input from the microphone 37 into a digital audio signal. It consists of a container. The sound processing unit 36 outputs the analog-converted sound from the speaker 38. The audio processing unit 36 inputs the digitally converted audio signal to the control unit 31.

  Next, an operation when the wireless communication device 10 and the PC wireless communication device 30 communicate to perform a voice call in the communication system 100 will be described. For example, in FIG. 1, a case where the user of the wireless communication device 10 </ b> A transmits a communication frame including a connection request to the PC wireless communication device 30 by operating the operation unit 12 will be described. In this case, if the location of the wireless communication device 10A is in the cover area of the repeater 20A, the repeater 20A receives the communication frame from the wireless communication device 10A and transmits the communication frame to the PC wireless communication device 30 via the network 40. .

  When receiving the communication frame from the wireless communication device 10A, the PC wireless communication device 30 registers the information of the wireless communication device 10A in the call information table of the storage unit 35 and starts a call with the wireless communication device 10A. During this call, when the PTT (Push To Talk) switch of the operation unit 12 of the wireless communication device 10A is pressed, the voice input from the microphone 8 of the wireless communication device 10A is the speaker of the PC wireless communication device 30. 38. Further, when the PTT switch of the operation unit 12 of the wireless communication device 10A is not pressed, the sound input from the microphone 37 of the PC wireless communication device 30 is output from the speaker 9 of the wireless communication device 10A. During this call, when a predetermined disconnection operation is performed at the operation unit 12 of the wireless communication device 10A or the operation unit 33 of the PC wireless communication device 30, the call is ended.

  For example, in FIG. 1, a case where the user of the wireless communication device 10B operates the operation unit 12 to transmit a communication frame including a connection request to the PC wireless communication device 30 will be described. If the location of the wireless communication device 10B is within the cover area of the repeater 20A, the repeater 20A receives the communication frame from the wireless communication device 10B and transmits the communication frame to the PC wireless communication device 30 via the network 40. At this time, if the location of the wireless communication device 10B is also within the cover area of the repeater 20B, the repeater 20B also receives a communication frame from the wireless communication device 10B and sends the communication frame to the PC wireless communication device 30 via the network 40. Send.

  In this case, the PC wireless communication device 30 receives the communication frame of the wireless communication device 10B from the repeater 20A and the repeater 20B. When the PC wireless communication device 30 according to this embodiment receives the communication frame in duplicate, the process for performing a call only on the communication frame received first (decoding of audio data or Output).

  Hereinafter, a detailed operation of the PC wireless communication device 30 will be described. FIG. 4 is a flowchart showing the operation of the reception process executed by the PC wireless communication device 30. When the PC wireless communication device 30 is started, such as when an application for communicating with the wireless communication device 10 is started in the computer constituting the PC wireless communication device 30, the control unit 31 stores a program stored in the storage unit 35. By reading, the reception process shown in FIG. 4 is executed. In the reception procedure, the control unit 31 sequentially executes a connection request time table update process (step S10), a disconnection request time table update process (step S20), and a call process (step S30).

  The connection request table update process in step S10 is a process for updating the call information table stored in the storage unit 35 when a connection request included in the communication frame from the wireless communication device 10 is received.

  The disconnection request time table update process in step S20 is a process for updating the call information table stored in the storage unit 35 when a disconnection request is received from the wireless communication device 10 or the like.

  The call process in step S30 is for performing a call with the partner wireless communication apparatus 10 indicated by the updated call information table by the connection request table update process in step S10 or the disconnect request table update process in step S20. It is processing of. Specifically, a call is made with the counterpart wireless communication apparatus 10 whose reception rejection flag in the call information table is OFF. Here, audio data received from the counterpart wireless communication device 10 is output from the speaker 38, audio data input from the microphone 37 is transmitted to the counterpart wireless communication device 10, or detected by the operation unit 33. A general wireless communication call process such as a call operation corresponding to the operation is executed. Even if the partner wireless communication device 10 is registered in the call information table, if the reception rejection flag is ON, the call processing with the wireless communication device 10 is not executed.

  FIG. 5 is a flowchart showing the operation of the connection request table update process. In the connection request table update process, the control unit 31 first determines whether or not a connection request included in the communication frame from the wireless communication device 10 has been received (step S101). Here, if the connection request from the wireless communication device 10 has not been received (step S101; No), the connection request table update process is terminated.

  If the connection request from the wireless communication device 10 has been received (step S101; Yes), the control unit 31 relays the communication partner ID that is the identification information of the wireless communication device 10 included in the communication frame and the communication frame. The repeater ID that is the identification information of the repeater 20 is acquired (step S102). And the control part 31 discriminate | determines whether the other party ID has been registered into the telephone call information table memorize | stored in the memory | storage part 35 (step S103).

  If the partner ID has already been registered in the call information table (step S103; Yes), the control unit 31 registers the partner ID identified in step S102 as the partner ID corresponding to the repeater ID identified in step S102. (Step S104). At this time, registration is performed with the reception rejection flag turned ON.

  If the partner ID is not already registered in the call information table (step S103; No), the control unit 31 registers the partner ID identified in step S102 as the partner ID corresponding to the repeater ID identified in step S102. (Step S105). At this time, the reception rejection flag is turned OFF and registration is performed.

  As shown in FIG. 6A, the call information table is a table in which a repeater ID, a partner ID, and a reception rejection flag are associated with each other. FIG. 6A shows a state in which no partner ID is registered. Note that the reception refusal flag is OFF in the initial stage.

  For example, as shown in FIG. 6A, when a communication frame whose partner ID is the wireless communication device 10B is received from the repeater 20A in a state where the partner ID is not registered in the call information table (step S103; No), as shown in FIG. 6B, the reception refusal flag is OFF and registered in the call information table.

  Further, as shown in FIG. 6B, when the communication frame having the partner ID of the wireless communication device 10B is received from the repeater 20B in a state where the wireless communication device 10B is registered (step S103; Yes), As shown in FIG. 6C, the reception rejection flag is turned ON and registered in the call information table.

  If the call information table is in the state shown in FIG. 6B, a voice call is made between the PC wireless communication device 30 and the wireless communication device 10B based on the voice data relayed by the repeater 20A by the call processing in step S30. Executed. On the other hand, if the call information table is in the state shown in FIG. 6C, a voice call is executed between the PC wireless communication device 30 and the wireless communication device 10B based on the voice data relayed by the repeater 20A. The voice call based on the voice data relayed by the repeater 20B is not executed (reception is rejected).

  After the process of step S104 or S105, the control unit 31 determines that the other party ID registered until now in the repeater ID in the call information table is different from the other party ID registered this time, and the reception rejection flag so far is OFF. It is determined whether or not (step S106). If no such partner ID has been registered so far (step S106; No), the connection request table update process is terminated.

  If such a partner ID is registered (step S106; Yes), the control unit 31 determines whether or not the partner ID that has been registered so far is registered in the partner ID of another repeater. (Step S107). If it is not registered in the partner ID of another repeater (step S107; No), the connection request table update process is terminated.

  If it is registered in the partner ID of another repeater (step S107; Yes), the control unit 31 turns off the reception refusal flag of the other repeater (step S108), and ends the connection request table update process. .

  The processing of steps S106 to S108 is processing when the partner wireless communication device 10 to which the repeater 20 relays a signal is switched. Specifically, when the call information table is in the state shown in FIG. 6C, when a communication frame whose counterpart ID is the wireless communication device 10A is received from the repeater 20A, the call information table is displayed in step S105. It is updated by the process as shown in FIG.

  In such a case, since the signal from the wireless communication device 10B is relayed from the repeater 20B (step S106 and step S107; Yes), in order to receive this signal, as shown in FIG. The 20B reception refusal flag is updated to OFF (step S108). As a result, communication (call) with the wireless communication device 10B can be continued. In FIG. 6D, the number of repeaters 20 whose repeater ID is the wireless communication device 10B and whose reception rejection flag is ON is one (repeater 20B). However, when there are a plurality of repeaters 20 (for example, repeater 20B and 20C) is assumed. In this case, the reception rejection flag of any one of the repeaters 20 (for example, one selected in descending order in the call information table) may be set to OFF.

  Next, the disconnection request table update process will be described. FIG. 7 is a flowchart showing the operation of the disconnection request table update process. In the disconnection request table update process, the control unit 31 first determines whether or not a disconnection request for disconnecting a call from the wireless communication device 10 that is in a call has been received (step S201). Here, if the disconnection request from the wireless communication device 10 has not been received (step S201; No), the control unit 31 determines whether or not communication data has been received from the wireless communication device 10 during a predetermined period of time. (Step S202). If the communication data has been received during the predetermined period (step S202; No), the disconnection request table update process is terminated. In step S <b> 202, it is determined whether or not the wireless communication device 10 is in a state where the call cannot be continued due to a radio wave defect, such as moving outside the cover area of the repeater 20.

  Control is performed when a disconnection request is received from the wireless communication device 10 during a call (step S201; Yes), or when it is determined that communication data has not been received from the wireless communication device 10 for a predetermined period (step S202; Yes). The unit 31 specifies a partner ID (step S203).

  And the control part 31 discriminate | determines whether the reception refusal flag of the other party ID specified by step S203 is ON in a telephone call information table (step S204).

  If the reception refusal flag is OFF (step S204; No), the control unit 31 determines whether or not the other repeater has the same partner ID as the partner ID specified in step S203 in the call information table. (Step S205).

  When it is determined in step S204 that the reception refusal flag is ON (step S204; Yes), or when it is determined in step S205 that there is no other party ID identical to the other party ID specified in step S203. (Step S205; No), the control unit 31 turns off the reception refusal flag in the call information table and deletes the partner ID (Step S207). Then, the disconnection request table update process is terminated. As a result, the call with the wireless communication apparatus 10 ends. The destination ID may not be deleted immediately from the call information table but may be deleted after a predetermined waiting time. In this case, the waiting time may be arbitrarily set.

  When it is determined in step S205 that the other repeater 20 has the same partner ID as the partner ID specified in step S203 (step S205; Yes), the control unit 31 repeater 20 having the same partner ID. Is turned OFF (step S206). Thereafter, the control unit 31 turns off the reception refusal flag of the repeater 20 that has requested disconnection in the call information table, and deletes the partner ID (step S207).

  The processing of steps S204 to S206 is processing for switching to relaying by the repeater 20 if the repeater 20 can no longer relay the signal of the wireless communication device 10 during a call if the other repeater 20 can relay the signal. . Specifically, when the call information table is in the state shown in FIG. 8A, that is, when the PC wireless communication device 30 is making a call with the wireless communication device 10B via the repeater 20A, a predetermined period of time. If it is determined that communication data from the wireless communication device 10B has not been received (step S202; Yes), there is a repeater 20B with the same partner ID (step S205; Yes), as shown in FIG. 8B. The reception refusal flag of the repeater 20B is turned off (step S206), and the call is switched to the call via the repeater 20B. As a result, communication (call) with the wireless communication device 10B can be continued. In FIG. 8A, the number of the repeaters 20 whose repeater ID is the wireless communication device 10B and whose reception rejection flag is ON is one (repeater 20B), but there are a plurality of repeaters 20 (for example, the repeater 20B and the repeater 20B). 20C) is assumed. In this case, the reception refusal flag of any one repeater 20 (for example, one selected in descending order in the call information table) may be turned off.

  As described above, according to the communication system 100 of the present invention, even when the communication frame from the wireless communication device 10 is received by the plurality of repeaters 20, the PC wireless communication device 30 restricts the connection request, In addition, since the connection destination is switched according to the situation, it is possible to make a suitable call.

  The present invention is not limited to the above-described embodiments, and modifications and applications are possible without departing from the spirit of the present invention. For example, the example in which the four-value FSK modulation method is adopted as the signal modulation method for the wireless communication device 10 to transmit and receive signals has been described, but other modulation methods may be adopted. 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 embodiment, the voice call between the wireless communication device 10 and the PC wireless communication device 30 has been described. However, the present invention can also be applied to data communication between the wireless communication device 10 and the PC wireless communication device 30. In the case of data communication, the PC wireless communication device 30 displays a screen corresponding to the data received from the wireless communication device 10 on the display unit 32.

  In the above embodiment, the call information table is described as being stored in the storage unit 35 of the PC wireless communication device 30. However, the call information table is stored in a location accessible by the PC wireless communication device 30. May be. For example, the call information table may be stored in a storage device connected to the network 40, and the PC wireless communication device 30 may access the call information table via the network 40.

  In the above-described embodiment, the case where the PC wireless communication device 30 receives a connection request or a disconnection request from the wireless communication device 10 has been described. However, a connection request or a disconnection request is sent from the PC wireless communication device 30 to the wireless communication device 10. You can also make a call or disconnect by sending.

  1 shows terminal-type radio communication devices 10A, 10B, and 10C as the radio communication device 10, but a fixed (stationary) type radio communication device 10 may be used.

  Further, although the program that causes the computer to function as the PC wireless communication device 30 has been described as being stored in the storage unit 35, this program may be distributed by being stored in a recording medium or distributed via a network. .

10A, 10B, 10C Wireless communication devices 20A, 20B Repeater 30 PC wireless communication device 40 Network 100 Communication system 1 Antenna 2 Transmission / reception switching unit 3 Transmission unit 4 Reception unit 5 Voice A / D / D / A conversion unit 6 Controller 7 Amplifier 8 Microphone 9 Speaker 11 Display unit 12 Operation unit 31 Control unit 32 Display unit 33 Operation unit 34 Communication unit 35 Storage unit 36 Audio processing unit 37 Microphone 38 Speaker

Claims (4)

A communication device that can communicate with the communication device via a relay device that relays a signal from the communication device and a network to which the relay device is connected,
Receiving means for receiving a connection request from the communication device via said network and the relay device,
When the receiving unit receives the connection request of the same communication device from a plurality of the relay devices, the communication with the communication device is performed via the relay device that has transmitted the connection request received first by the receiving unit. Communication means for starting
When the communication device that relays communication by one relay device among the relay devices is switched from one communication device to another communication device that is different from the one communication device, the other relay device is different from the one relay device. If the relay device is relaying communication of the one communication device, means for continuing communication with the one communication device via the other relay device;
A communication apparatus comprising:   When communication with the communication device that has been performed through one of the relay devices is disconnected, another relay device that is different from the one relay device relays communication of the communication device. 2. The communication apparatus according to claim 1, further comprising means for continuing communication with the communication device via the other relay apparatus. A communication device;
With multiple communicators,
A plurality of relay devices connected to the communication device via a network and communicating with the communication device by wireless communication to relay communication between the communication device and the communication device;
A communication system comprising:
The communication device is
A connection request transmitting means for transmitting a connection request for the communication device to any of the plurality of relay devices;
The communication device
Receiving means for receiving the connection request from the communication device via the relay device and the network;
When the receiving unit receives the connection request of the same communication device from a plurality of the relay devices, the communication with the communication device is performed via the relay device that has transmitted the connection request received first by the receiving unit. Communication means for starting
When the communication device that relays communication by one relay device among the relay devices is switched from one communication device to another communication device that is different from the one communication device, the other relay device is different from the one relay device. And a means for continuing communication with the one communication device via the other relay device when the relay device relays communication of the one communication device . A computer,
With multiple communicators,
A plurality of relay devices that are connected to the computer via a network, communicate with the communication device by wireless communication, and relay communication between the computer and the communication device;
In a communication system composed of:
The computer,
Receiving means for receiving a connection request from the communication device via the relay device and the network;
When the receiving unit receives the connection request of the same communication device from a plurality of the relay devices, the communication with the communication device is performed via the relay device that has transmitted the connection request received first by the receiving unit. Communication means to start,
When the communication device that relays communication by one relay device among the relay devices is switched from one communication device to another communication device that is different from the one communication device, the other relay device is different from the one relay device. If the relay device relays communication of the one communication device, means for continuing communication with the one communication device via the other relay device;
A program characterized by functioning as

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