Wireless communication base station and wireless communication method

Abstract

To provide a wireless communication base station in which transmission content can be transmitted quickly as much as possible, even when a favorable communication environment cannot be obtained.SOLUTION: In a wireless communication system, a control unit of a wireless communication base station 2 performs control, in a case in which voice data that is transmitted from one wireless communication device to another wireless communication device is relayed and the voice data transmitted from the one communication device is divided into multiple pieces of divided data, to successively combine the multiple pieces of divided data on a time-series basis, and to restore the voice data transmitted from the one wireless communication device to be stored in a storage, and control a communication unit, in a case in which the another wireless communication device is present within a transmission enabled range, to transmit the voice data stored in the storage to the another wireless communication device.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a wireless communication base station and a wireless communication method. [Background technology]

[0002] In a wireless communication system, when a wireless communication terminal is unable to transmit, normal transmission is stopped. The contents of the message are recorded in the memory, and then when the message can be transmitted, the contents of the message recorded in the memory are By playing the current transmission content at high speed until it catches up with the current transmission content, There is known a technique that enables smooth telephone conversation (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 3066311 Summary of the Invention [Problem to be solved by the invention]

[0004] In Patent Document 1, a wireless communication base station monitors the strength of a signal transmitted from a wireless communication terminal, A wireless communication terminal determines whether it is within its own service area, and When the user is outside the service area of ​​a communication base station, the radio circuit control station notifies the user via the wireless communication base station. In other words, the technology disclosed in Patent Document 1 is as follows: This is based on duplex communication (two-way communication) that allows you to monitor the radio wave conditions even while you are transmitting. In the technology disclosed in Patent Document 1, the time from when voice transmission becomes impossible to when voice transmission becomes possible is When the period during which speech cannot be transmitted becomes longer and the time delay that occurs during the period cannot be eliminated, clears the recorded speech in the memory, i.e., clears the speech during the period when speech transmission is disabled. It needs to be discarded.

[0005] On the other hand, for example, a call channel can be shared with other groups, and so-called PTT (Push to Tag) In simplex communication, which uses one-way communication in the lk method, for example, If the communication channel that can be used is being used for communication with another group, Even if a user starts transmitting on a wireless terminal, the transmission will not be continued until the communication of the other group is completed. In addition, for example, when the group is outside the range of a wireless communication base station, When a user starts transmitting on a wireless terminal belonging to There is a possibility that the signal strength may not be sufficient and the message you wish to send may not be transmitted promptly.

[0006] The present disclosure relates to wireless communication that relays transmitted speech even when a good communication environment is not available. To provide a base station and a wireless communication method capable of transmitting transmitted contents as quickly as possible. The purpose is to [Means for solving the problem]

[0007] A wireless communication base station according to an embodiment of the present disclosure relays communications between a plurality of wireless communication devices. a communication unit for transmitting and receiving signals to and from the wireless communication device; a storage unit in which at least the transmission range of the wireless communication base station is stored; Based on the received position information for each of the wireless communication devices, the wireless communication devices a determination unit that determines whether the device is within a speaking range; and and a control unit for controlling at least the communication unit and the storage unit, the wireless communication base station transmits the wireless communication signal from one of the plurality of wireless communication devices to another wireless communication device When relaying voice data transmitted from one wireless communication device to another, When the data is divided into a plurality of divided data in a time series, the plurality of divided data are sequentially divided into a plurality of divided data in a time series. and recovering the voice data transmitted from the one wireless communication device, and storing the recovered voice data in the storage unit. and controlling the other wireless communication device to be within the transmission range. When the voice data stored in the storage unit is transmitted to the other wireless communication device, the communication unit is controlled. The received signal is transmitted to the receiving device.

[0008] A wireless communication method according to an aspect of the present disclosure includes a wireless relay device that relays communication between a plurality of wireless communication devices. a wireless communication base station, the wireless communication base station including a communication unit for transmitting and receiving signals to and from the wireless communication device; A storage unit stores the transmission range of the wireless communication base station, and a receiving unit receives the transmission range of the wireless communication base station. Based on the position information of each of the wireless communication devices, the wireless communication devices a determination unit that determines whether the object is within a range of a possible range, and and a control unit that controls the communication unit and the storage unit. A wireless communication base station transmits a signal from one of the plurality of wireless communication devices to another wireless communication device. When relaying the voice data to be transmitted, the voice data transmitted from the first wireless communication device is divided into a plurality of divided data, the plurality of divided data are sequentially combined in a time series. The voice data transmitted from the one wireless communication device is restored and stored in the storage unit. When the other wireless communication device is present within the transmission range, In this case, the communication unit is controlled to transmit the voice data stored in the storage unit to the other wireless communication device. Send to. Effect of the Invention

[0009] According to the present disclosure, even if a good communication environment is not available, the contents of the transmitted voice are preserved as much as possible. It can be sent quickly. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a conceptual diagram for explaining a wireless communication system according to the first embodiment of the present disclosure. [Diagram 2] FIG. 2 is a block diagram showing an example of the configuration of the wireless communication device according to the first embodiment of the present disclosure. [Diagram 3] FIG. 3 is a block diagram showing an example of the configuration of a wireless communication base station according to the first embodiment of the present disclosure. [Figure 4] FIG. 4 is a conceptual diagram for explaining a specific example of the wireless communication system according to the first embodiment of the present disclosure. [Diagram 5] FIG. 5 is a conceptual diagram for explaining a specific example of the wireless communication system according to the first embodiment of the present disclosure. [Figure 6] FIG. 6 is a flowchart showing an example of a schematic process flow of the wireless communication system according to the first embodiment of the present disclosure. [Figure 7] FIG. 7 is a flowchart showing an example of the flow of a process for determining whether or not real-time data can be transmitted in the transmitting device. [Figure 8] FIG. 8 is a flowchart showing an example of the flow of a real-time data transmission availability determination process in a wireless communication base station. [Figure 9] FIG. 9 is a flowchart showing an example of the flow of a process for determining whether or not real-time data can be transmitted in the receiving side device. [Figure 10] FIG. 10 is a flowchart showing an example of the flow of a process for determining whether or not sound recording data can be transmitted in the transmitting device. [Figure 11]FIG. 11 is a flowchart showing an example of the flow of a process for determining whether or not sound recording data can be transmitted in a wireless communication base station. [Figure 12] FIG. 12 is a sequence diagram showing a specific example of processing in the wireless communication system according to the first embodiment of the present disclosure. [Figure 13] FIG. 13 is a sequence diagram showing a specific example of processing in the wireless communication system according to the first embodiment of the present disclosure. [Figure 14] FIG. 14 is a flowchart showing an example of the flow of the sound recording data transmission process in the transmitting device. [Figure 15A] FIG. 15A is a schematic diagram of recorded data stored in a storage unit of a wireless communication device. [Figure 15B] FIG. 15B is a schematic diagram of divided data showing an example of division of recorded data transmitted from a communication unit of a wireless communication device. [Figure 16] FIG. 16 is a flowchart showing an example of the flow of the recording data storage process in the wireless communication base station. [Figure 17] FIG. 17 is a flowchart showing an example of the flow of a recording data relay process in a wireless communication base station. [Figure 18] FIG. 18 is a flowchart showing an example of the flow of a process for determining whether or not sound recording data can be transmitted in the receiving device. [Figure 19] FIG. 19 is a sequence diagram showing a specific example of processing in the wireless communication system according to the first embodiment of the present disclosure. [Figure 20] FIG. 20 is a conceptual diagram for explaining the configuration of a wireless communication system according to the second embodiment of the present disclosure. [Figure 21] FIG. 21 is a block diagram showing an example of the configuration of a wireless communication device according to the second embodiment of the present disclosure. [Figure 22] FIG. 22 is a conceptual diagram for explaining a specific example of a wireless communication system according to the second embodiment of the present disclosure. [Diagram 23] FIG. 23 is a conceptual diagram for explaining a specific example of a wireless communication system according to the second embodiment of the present disclosure. [Figure 24]FIG. 24 is a flowchart showing an example of the flow of a real-time data transmission availability determination process in the transmitting side device. [Diagram 25] FIG. 25 is a flowchart showing an example of the flow of a real-time data transmission availability determination process in the receiving-side device. [Figure 26] FIG. 26 is a flowchart showing an example of the flow of a process for determining whether or not sound recording data can be transmitted in the transmitting device. [Figure 27] FIG. 27 is a flowchart showing an example of the flow of a process for determining whether or not sound recording data can be transmitted in the receiving device. [Figure 28] FIG. 28 is a sequence diagram showing a specific example of processing in the wireless communication system according to the second embodiment of the present disclosure. [Figure 29] FIG. 29 is a sequence diagram showing a specific example of processing in the wireless communication system according to the second embodiment of the present disclosure. [Diagram 30] FIG. 30 is a flow chart showing an example of the flow of the recording data storage and playback process in the receiving device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, an embodiment according to the present disclosure will be described in detail with reference to the accompanying drawings. The present disclosure is not limited to the embodiment, and when there are multiple embodiments, each embodiment The embodiments may be combined. The same reference numerals are used to denote the same components, and duplicated explanations will be omitted.

[0012] [First embodiment] <Wireless communication system> A configuration of a wireless communication system according to a first embodiment of the present disclosure will be described with reference to FIG. FIG. 1 is a conceptual diagram for explaining the configuration of a wireless communication system according to a first embodiment of the present disclosure. It is.

[0013] As shown in FIG. 1, a wireless communication system 1 according to a first embodiment of the present disclosure includes, for example, A communication device 10a, a wireless communication device 10b, a wireless communication device 10c, and a wireless communication device 10d. The wireless communication devices 10a to 10e include They all belong to the same group.

[0014] The wireless communication devices 10a to 10e communicate with each other using a PTT (Push to Talk) method. Group communication is performed by one-way communication. The wireless communication device 10a to the wireless communication device 10e are present within the communication range R of the wireless communication base station 2. In the first embodiment of the present disclosure, the transmittable range of the wireless communication base station 2 is Range R is the required radio wave strength for stable transmission and reception between wireless communication devices. This shows the range in which

[0015] The wireless communication devices 10a to 10e communicate with each other through a plurality of communication channels (channel frequencies The number of groups is appropriately switched between the wireless communication device 10a and the wireless communication device 1 The call channel (channel frequency) used by 0e for group communication is wireless communication The wireless communication device 10a is shared with a group different from the group to which the wireless communication device 10e belongs. Hereinafter, the wireless communication devices 10a to 10e will be collectively referred to as wireless communication devices 1 0. The number of wireless communication devices 10 that belong to the same group is not limited.

[0016] <Wireless communication device> Next, the configuration of the wireless communication device according to the first embodiment of the present disclosure will be described with reference to FIG. FIG. 2 is a block diagram showing an example of the configuration of a wireless communication device according to the first embodiment of the present disclosure. be.

[0017] As shown in FIG. 2, the wireless communication device 10 includes a GPS receiver 11, a communication unit 12, and a storage unit. The device includes a keyboard 13, an operation unit 14, a display unit 15, a control unit 16, and a microphone 17. The wireless communication device 10 is a wireless communication device having a group communication function using one-way communication in a PTT system. It is a communication device.

[0018] The GPS receiving unit 11 is composed of a GPS receiving circuit, a GPS receiving antenna, etc. The GPS receiver 11 receives a GPS signal. The GPS receiver 11 transmits the received GPS signal to the location information acquisition unit 16. Output to 2.

[0019] The communication unit 12 communicates with other wireless communication devices via the wireless communication base station 2 in a single PTT system. Specifically, the communication unit 12 performs wireless communication by two-way communication with other wireless communication devices. The wireless communication device transmits various types of information and receives various types of information from other wireless communication devices. Specifically, various data including audio data, still image data, video data, and text data In the present disclosure, the voice data is divided into a plurality of pieces of divided data in a time series. In addition, depending on the type of data that the communication unit 12 transmits and receives between other wireless communication devices, There is no limitation to the above. The communication unit 12 may have a function of performing short-distance wireless communication, for example. The communication unit 12 may have a function of performing long-distance wireless communication. The wireless communication unit 2 may be configured to perform wireless communication with another wireless communication device without going through the wireless communication unit 2. 12 is composed of communication circuits, etc.

[0020] The storage unit 13 stores various information. For example, the storage unit 13 stores The group information includes information about the group to which the user belongs. Identification information such as the ID of other wireless communication devices, location information, and group communication The communication channel (channel frequency) to be used may be included.

[0021] In the present disclosure, the storage unit 13 stores voice data collected by the microphone 17. In the present disclosure, the storage unit 13 stores a bit error indicating a communication quality index in the communication unit 12. The thresholds (first threshold and second threshold) for the bit error rate (hereinafter referred to as "BER") are stored. The storage unit 13 is, for example, a RAM (Random Access Memory), a flash memory, Semiconductor memory devices such as flash memory, hard disks, solid state drives, etc. This can be realized by a storage device such as a hard drive.

[0022] The operation unit 14 accepts various operations for the control unit 16. Examples of the various operations include For example, the operation of switching the talk function on and off (the talk start operation and the talk stop operation in the present disclosure) The operation unit 14 includes an operation to switch between a data transmission state and a data reception state. The operation unit 14 outputs an operation signal corresponding to the received operation to the operation control unit 165. For example, a physical switch or a touch panel on the display unit 15 may be used to accept user operations. This can be achieved.

[0023] The display unit 15 displays various images constituting the user interface. In the display, the display unit 15 displays information such as the start and end of a voice transmission. 5 is, for example, a liquid crystal display (LCD) or an organic electroluminescence (EL) display. The display unit 15 is a display including an electroluminescence (EL) display. For example, it may include a light emitting unit such as an LED (Light Emitting Diode).

[0024] The control unit 16 is, for example, a CPU (Central Processing Unit) or an MPU (Micro Processor). A program (for example, the program of the present disclosure) stored in a storage unit (not shown) is The program is executed using RAM or the like as a work area. The control unit 16 is a controller, for example, an application specific integrated circuit (ASIC). Specific Integrated Circuit) and FPGA (Field Programmable Gate Array) It may be realized by an integrated circuit such as the above.

[0025] The microphone 17 converts input sound, for example, speech, into an audio signal.

[0026] The control unit 16 includes a device information acquisition unit 161, a location information acquisition unit 162, and a communication control unit 163. a memory control unit 164, an operation control unit 165, a display control unit 166, and a sound processing unit 167. The communication quality control unit 160 further comprises an audio data switching unit 168, a communication quality measurement unit 169, and a determination unit 170.

[0027] The device information acquisition unit 161 acquires various information related to other wireless communication devices. The acquisition unit 161 acquires, for example, an identification ID of another wireless communication device received by the communication unit 12. The information acquired by the device information acquisition unit 161 includes the following: Not limited.

[0028] The location information acquisition unit 162 acquires the current location information of the wireless communication device 10. The acquisition unit 162 acquires the wireless communication device based on the GPS signal received by the GPS receiving unit 11, for example. Obtain the current location information of station 10.

[0029] The communication control unit 163 controls the communication unit 12 to communicate with the wireless communication device 10. The communication control unit 10 controls communication between the wireless communication device 10 and other wireless communication devices 10 that belong to the same group. The control unit 163 controls the communication unit 12 to, for example, transmit various data to other wireless communication devices 10. In the present disclosure, the communication control unit 163 controls the communication unit 12 to, for example, For example, the voice data collected by the microphone 17 and the voice data stored in the memory unit 13 may be used for other purposes. The signal is transmitted and received between the wireless communication device 10.

[0030] The memory control unit 164 stores various information in the memory unit 13. For example, For example, identification information such as the ID of another wireless communication device acquired by the device information acquisition unit 161, or the location The information, the channel frequency currently used by the group, etc. are stored in the storage unit 13. In the disclosure, the storage control unit 164 stores, for example, voice data collected by the microphone 17. The storage control unit 164 stores, for example, the location information of the wireless communication device 10 in the storage unit 13. Store it in 13.

[0031] The memory control unit 164 reads out various information from the memory unit 13. For example, the memory control unit 164 For example, identification information such as the identification ID of another wireless communication device stored in the storage unit 13 and location information In the present disclosure, the memory control unit 164 reads out, for example, information stored in the memory unit 13. The storage control unit 164 reads out the voice data stored in the storage unit 13, for example. The position information of the wired communication device 10 is read out.

[0032] The display control unit 166 causes various images to be displayed on the display unit 15. For example, the display control unit 166 For example, various images constituting a user interface are displayed on the display unit 15. In the above, the display control unit 166 displays information such as the start and end of speech transmission on the display unit 15. Show.

[0033] The audio processing unit 167 processes the audio signal collected by the microphone 17 (for example, converts it into a digital signal). The audio data is then converted, encrypted, etc. and output to the audio data switching unit 168 as audio data for transmission.

[0034] The audio data switching unit 168 performs a process of switching audio data. The section 168 is a voice data that is collected by the microphone 17 and processed by the voice processing section 167. The output destination of the voice data is switched between the communication unit 12 and the storage unit 13. 8 switches the source of the voice data output to the communication unit 12 between the voice processing unit 167 and the storage unit 13. Change it.

[0035] The communication quality measurement unit 169 measures the communication quality in the communication unit 12. The quality measurement unit 169 measures, for example, the BER, which is a communication quality index in the communication unit 12 . There is no particular restriction on the method for measuring the BER in the communication quality measurement unit 169 .

[0036] The determination unit 170 performs various determination processes in the wireless communication device 10. For specific examples of the determination process, see the process for determining whether real-time data transmission is possible and the process for determining whether recording data is possible. The process will be described in detail in the process of determining whether or not to transmit the recorded data, the process of transmitting the recorded data, and the process of relaying the recorded data. do.

[0037] <Wireless communication base station> Next, the configuration of the wireless communication base station 2 according to the first embodiment of the present disclosure will be described with reference to FIG. FIG. 3 is a block diagram showing an example of the configuration of a wireless communication base station according to the first embodiment of the present disclosure. This is a diagram.

[0038] As shown in FIG. 3, the wireless communication base station 2 includes a communication unit 22, a storage unit 23, and a control unit 26. The wireless communication base station 2 shown in FIG. A wireless communication base station having a function of relaying one-way communication between multiple wireless communication devices. Hereinafter, multiple wireless communication devices that perform group communication using one-way PTT communication will be referred to as a "group." Each wireless communication device in the loop is also referred to as "each wireless communication device in the loop."

[0039] The wireless communication base station 2 shares a call channel (channel frequency) among multiple groups, By switching between multiple communication channels (channel frequencies) as needed, each wireless communication relays group communications between receiving devices.

[0040] The communication unit 22 executes wireless communication with each wireless communication device in the group. The communication unit 22 relays various types of information transmitted and received between the wireless communication devices in the group. The various types of information include audio data, still image data, video data, and text data. The types of data that the communication unit 22 relays between wireless communication devices include There is no particular limitation. In the present disclosure, the communication unit 22 receives audio from each wireless communication device in the group. The communication unit 22 receives the position information of each wireless communication device together with the voice data. It is composed.

[0041] The storage unit 23 stores various information. For example, the storage unit 23 stores information on a group communication. The group information includes the group name, Identification information such as the ID of each wireless communication device, location information, and call information used for group communication In the present disclosure, the storage unit 23 may include a group. The voice data transmitted and received between each wireless communication device in the loop is stored. The voice data transmitted and received between the wired communication devices is transmitted to each wireless communication device in the group by the communication unit 22. In the present disclosure, the storage unit 23 stores the location information together with the location information received from the device. In the example shown in FIG. 1, the transmittable range of the wireless communication base station 2 is stored. The storage unit 23 is, for example, a RAM (Random Access Memory), a flash memory, (Flash Memory), or hard disks, solid-state This can be achieved by a storage device such as a drive.

[0042] The control unit 26 is, for example, a CPU (Central Processing Unit) or an MPU (Micro Processor). A program (for example, the program of the present disclosure) stored in a storage unit (not shown) is The program is executed using RAM or the like as a work area. The control unit 26 is a controller, for example, an application specific integrated circuit (ASIC). Specific Integrated Circuit) and FPGA (Field Programmable Gate Array) It may be realized by an integrated circuit such as the above.

[0043] The control unit 26 includes a device information acquisition unit 261, a location information acquisition unit 262, and a communication control unit 263. The storage device 260 includes a storage control unit 264, a determination unit 267, and a data restoration unit 268.

[0044] The device information acquisition unit 261 acquires various information related to each wireless communication device in the group. The device information acquisition unit 261 receives, for example, information on each wireless communication device in the group received by the communication unit 22. Identification information such as the ID of the group, location information, and the channel frequency currently used by the group The information acquired by the device information acquisition unit 261 is not limited to the above. .

[0045] The location information acquisition unit 262 acquires the current location information of each wireless communication device in the group. For example, the location information acquisition unit 262 acquires the location of the wireless communication device based on the information transmitted from each wireless communication device. The current location information of the communication device 10 is obtained.

[0046] The communication control unit 263 controls the communication unit 22 to perform communication between the wireless communication devices in the group. The communication control unit 263 controls the communication unit 22 to transmit various types of data, for example. In the present disclosure, the communication control unit 263 relays the signal between each wireless communication device in the group. For example, the receiving unit 22 receives voice data transmitted from each wireless communication device in the group. , and relays between each wireless communication device in the group.

[0047] The memory control unit 264 stores various information in the memory unit 23. For example, the identification information such as the identification ID of each wireless communication device in the group acquired by the device information acquisition unit 261 The information, the location information, and the channel frequency currently used by the group are stored in the memory unit 23. In the present disclosure, the storage control unit 264 stores, for example, The voice data transmitted from each wireless communication device is stored in the storage unit 23 together with the position information of each wireless communication device. In the present disclosure, the memory control unit 264 may store, for example, the position of each wireless communication device in the group. The location information is stored in the storage unit 23.

[0048] The memory control unit 264 reads out various information from the memory unit 23. For example, the memory control unit 264 For example, identification information such as the identification ID of another wireless communication device stored in the storage unit 23 and location information In this disclosure, the following is provided: The storage control unit 264 reads out, for example, the voice data stored in the storage unit 23. In the disclosure, the memory control unit 264, for example, The transmittable range of station 2 and the position information of each wireless communication device in the group are read out.

[0049] The determination unit 267 performs various determination processes in the wireless communication base station 2. 67 is, for example, a wireless communication device in the group that can transmit within the wireless communication base station 2 (for example, For example, it is determined whether the mobile station is within the transmission range R shown in FIG. The determination unit 267 determines, for example, the transmittable range of the wireless communication base station 2 read from the storage unit 23. , and each wireless communication device in the group based on the position information of each wireless communication device in the group. The determining unit 267 determines whether the wireless communication base station 2 is within the communication range of the wireless communication base station 2. For specific examples of the determination process, see the process of determining whether real-time data can be transmitted and the process of recording. The process of determining whether or not to transmit audio data, the process of storing audio data, and the process of relaying audio data are explained in detail. Reveal.

[0050] The data recovery unit 268 recovers the audio data received by the communication unit 22 from a plurality of divided data When the audio data is divided into multiple pieces, the multiple pieces of data are joined together to restore the original audio data. A specific example of the audio data restoration process in the data restoration unit 268 will be described later in the section on recording data storage. This will be explained in detail in the memory processing section.

[0051] Next, a specific example of the wireless communication system 1 according to the first embodiment of the present disclosure will be described with reference to FIG. 4 and FIG. 5. 4 and 5 are diagrams illustrating an example of a wireless communication system according to a first embodiment of the present disclosure. FIG. 13 is a conceptual diagram for explaining a specific example.

[0052] In FIG. 4, within the communication range R of the wireless communication base station 2, there is a wireless communication device different from the wireless communication device 10. In this example, there is a wireless communication device 20 that belongs to a different group. The number of wireless communication devices 20 that can be used is not limited.

[0053] In FIG. 5, among the wireless communication devices 10 that belong to the same group performing group communication, An example is shown in which the communication device 10a is outside the communication range R of the wireless communication base station 2.

[0054] In the example shown in FIG. 4, for example, when a user performs an operation to start transmission on the wireless communication device 10a, However, the communication channel used for group communication of the group to which the wireless communication device 10a belongs is If there is no vacancy in the channel frequency, that is, if the group to which the wireless communication device 10a belongs A group including a wireless communication device 20 that shares a call channel (channel frequency) with Other groups, including the above, are using all of the call channels (channel frequencies) for group communication. If the group communication is completed, the call channel (channel frequency) is changed to The wireless communication device 10a for which the user has performed a transmission start operation continues to transmit until an available number of channels (number of channels) is available. Unable to start.

[0055] In the example shown in FIG. 5, for example, a mobile station that is outside the communication range R of the wireless communication base station 2 When a user starts a call on the wireless communication device 10a, stable transmission and reception can be performed. There is a possibility that the required radio wave strength will not be obtained and the transmitted content will be lost.

[0056] In this way, radio communication can be carried out by sharing a call channel (channel frequency) with other groups. A wireless communication device 10 that performs group communication by one-way communication of the PTT method via a base station 2. For example, after the user starts talking, the call channel (channel frequency) For example, the time lag between when a vacancy occurs in the wireless communication base station 2 and when a call actually starts to be transmitted. Due to the decrease in radio wave strength caused by being outside the transmission range of the It is possible that the message may not be sent properly.

[0057] An outline of the process of the wireless communication system 1 according to the first embodiment of the present disclosure will be described with reference to FIG. FIG. 6 is an example of a schematic process flow of the wireless communication system according to the first embodiment of the present disclosure. Hereinafter, the wireless communication device 10a will be referred to as a transmitting device (one wireless communication device ), and the wireless communication device 10b is the receiving device (another wireless communication device). In the outline of the process shown, the wireless communication device 10a, which is the transmitting device, will be mainly described.

[0058] When a call transmission start operation is performed on the wireless communication device 10a (step S1), The device 10a receives voice data (hereinafter, also referred to as real-time data) collected by a microphone 17. (Step S 2).

[0059] When real-time data transmission is possible, the wireless communication device 10a transmits the real-time data by using the microphone 17. Then, the real-time transmission of the collected voice data is started (step S3). When a talk stop operation is performed on the device 10a (step S4), the wireless communication device 10a Then, the real-time transmission of the voice data collected by the microphone 17 is stopped (step S5).

[0060] When real-time data cannot be transmitted, the wireless communication device 10a uses the microphone 17 Recording of the collected voice data is started (step S6). When the user performs a talk stop operation (step S7), the wireless communication device 10a The recording of the voice data collected by the is stopped (step S8), and then the recording data is After the transmission permission determination process (the process of determining whether or not the recorded data can be transmitted) (step S9), A transmission process (sound recording data transmission process) is carried out (step S10).

[0061] <Real-time data transmission availability determination process> 7, 8, and 9, the wireless communication device 10a, which is a transmitting device, and the receiving device A wireless communication device 10b and a communication between the wireless communication device 10a and the wireless communication device 10b The process of determining whether or not real-time data transmission is possible in the relay wireless communication base station 2 (step shown in FIG. 6) A specific example of step S2) will be described. FIG. 7 shows the real-time data in the transmitting device. 8 is a flowchart showing an example of the flow of a data transmission permission determination process of a wireless communication base station. 1 is a flowchart showing an example of a flow of a process for determining whether or not real-time data can be transmitted in the FIG. 9 shows an example of the flow of a process for determining whether real-time data can be transmitted in a receiving device. 1 is a flowchart.

[0062] In each process shown in FIG. 7, FIG. 8, and FIG. 9, the wireless communication device 10a detects a transmission start operation. In the standby state, the wireless communication base station 2 receives a real-time data transmission request from the wireless communication device 10a. In the reception standby state, the wireless communication device 10b receives real-time data from the wireless communication base station 2. It is assumed that the device is in a state of waiting to receive a request.

[0063] A user operates the operation unit 14 of the wireless communication device 10a to start transmission. When the determination unit 170 of the wireless communication device 10a receives the signal (step S1 in FIG. 6), the determination unit 170 of the wireless communication device 10a first performs the process shown in FIG. As shown in FIG. 2, it is determined whether or not speech transmission by the communication unit 12 is possible (step S201). Specifically, the determination unit 170 of the wireless communication device 10a acquires the reception state of the communication unit 12. In the case of an arbitrary communication channel (channel frequency) stored in the memory unit 13, If there are no waves, it is determined that the communication channel (channel frequency) can be used for transmission. (Step S201; Yes). The determination unit 170 of the wireless communication device 10a stores the If there is a signal received on all the channels (channel frequencies) stored in It is determined that voice transmission is not possible (step S201; No).

[0064] If voice transmission is not possible (step S201; No), the determination unit 170 of the wireless communication device 10a determines that real-time data transmission is not possible (step S202).

[0065] If speech transmission is possible (step S201; Yes), the communication control unit of the wireless communication device 10a 163 is a communication unit 1 that transmits a real-time data transmission request to the wireless communication base station 2 2 (step S203). The wireless communication device 10a controls the wireless communication base station 2. When making a real-time data transmission request, identification information such as the device's ID and location information, etc. Identification information such as the device's own ID and location information may be periodically transmitted. In addition, the wireless communication device 10a may transmit the real-time signal to the wireless communication base station 2. When making a system data transmission request, the determination unit 170 of the wireless communication device 10a determines whether the communication unit 12 is Whether to make a real-time data transmission request is determined based on the signal strength received from the base station 2. Alternatively, the determination unit 170 of the wireless communication device 10a may determine whether the wireless communication device 1 Real-time data transmission based on 0a location information, battery level, average transmission range, etc. It may be determined whether or not to make a request.

[0066] As shown in FIG. 8, the determination unit 267 of the wireless communication base station 2 receives the request from the wireless communication device 10a. It is determined whether a real-time data transmission request has been received (step S211). If the real-time data transmission request from the device 10a is not received (step S211 ; No), the determination unit 267 of the wireless communication base station 2 receives the real-time The process of step S211 is repeated until a data transmission request is received.

[0067] When a real-time data transmission request is received from the wireless communication device 10a (step S21 1; Yes), and then the determination unit 267 of the wireless communication base station 2 determines whether the wireless communication device 10a has stored The mobile station 2 determines whether the mobile station 2 is within the communication range of the wireless communication base station 2 stored in the mobile station 23. The wireless communication device 10a determines whether or not the wireless communication device 10a is within the transmission range of the wireless communication base station 2 (step S212). If the mobile station does not exist within the range of the mobile station (step S212; No), the process returns to step S211. Then, the wireless communication device 10a returns to a standby state for receiving a real-time data transmission request from the wireless communication device 10a.

[0068] When the wireless communication device 10a is within the transmission range of the wireless communication base station 2 ( Step S212 (Yes), the communication control unit 263 of the wireless communication base station 2 controls the wireless communication device 10 b to transmit real-time data (step S 213). The wireless communication base station 2 sends a real-time data transmission request to the wireless communication device 10b. When making the request, a transmission request for identification information such as the identification ID of the wireless communication device 10b and location information, etc. In addition, the wireless communication base station 2 may transmit real-time data to the wireless communication device 10b. When making a data transmission request, the determination unit 267 of the wireless communication base station 2 determines whether the wireless communication The radio wave intensity may be used as an index to determine whether or not to make a real-time data transmission request. Alternatively, the determination unit 267 of the wireless communication base station 2 may determine whether the wireless communication Based on the location information of the device 10b, the remaining battery level, the average transmission range, etc., real-time data is It may also be determined whether or not to make a data transmission request.

[0069] As shown in FIG. 9, the determination unit 170 of the wireless communication device 10b receives a link from the wireless communication base station 2. It is determined whether a real-time data transmission request has been received (step S221). If a real-time data transmission request is not received from the base station 2 (step S221; No.), the determination unit 170 of the wireless communication device 10b receives the real-time data from the wireless communication base station 2. The process of step S221 is repeated until a data transmission request is received.

[0070] When a real-time data transmission request is received from the wireless communication base station 2 (step S221 ; Yes), the communication control unit 163 of the wireless communication device 10b performs a rear-end communication with the wireless communication base station 2. The communication unit 12 is controlled so as to issue a real-time data transmission permission notice (step S222). The wireless communication device 10b issues a real-time data transmission permission notice to the wireless communication base station 2. When transmitting the information, the device may transmit its own identification information such as its own device ID and its location information. Identification information such as an ID, location information, and the like may be transmitted periodically.

[0071] Returning to FIG. 8, the determination unit 267 of the wireless communication base station 2 receives the real-time It is determined whether a real-time data transmission permission notification has been received (step S214).

[0072] If the real-time data transmission permission notice is not received from the wireless communication device 10b (step Step S214 (No), the determination unit 267 of the wireless communication base station 2 adds 1 to the counter value C2. (step S217), and it is determined whether the counter value C2 has reached the counter threshold value C2th. If the counter value C2 is not the counter threshold value C2th (step S218), If the counter value C2 is equal to or smaller than the counter threshold value, the process returns to step S213. When it becomes C2th (step S218; Yes), the counter value C2 is reset (C2=0 ) (step S219), the process returns to step S211, and the wireless communication device 10a The process returns to a standby state for receiving a real-time data transmission request. Instead of the process of 9, the real-time data is not transmitted even if a predetermined time has elapsed since the real-time data transmission request. If the data transmission permission notification is not received, the process returns to step S211. Alternatively, the state may return to a standby state for receiving a real-time data transmission request from the device 10a.

[0073] When the real-time data transmission permission notification is received from the wireless communication device 10b (step S 214; Yes), and then the determination unit 267 of the wireless communication base station 2 determines whether the wireless communication device 10b Whether the wireless communication base station 2 stored in the storage unit 23 is within the communication range of the wireless communication base station 2 It is determined whether the wireless communication device 10b is capable of transmitting from the wireless communication base station 2 (step S215). If it is not within the range (step S215; No), the process of step S211 Then, the processing returns to a standby state for receiving a real-time data transmission request from the wireless communication device 10a.

[0074] When the wireless communication device 10b is within the transmission range of the wireless communication base station 2 ( Step S215: Yes), the communication control unit 263 of the wireless communication base station 2 controls the wireless communication device 10 The communication unit 22 is controlled so as to send a real-time data transmission permission notice to a (step (P S216).

[0075] Returning to FIG. 7, the determination unit 170 of the wireless communication device 10a receives the real-time It is determined whether a real-time data transmission permission notification has been received (step S204). If the real-time data transmission permission notice is not received from the base station 2 (step S204 (No), and the determination unit 170 of the wireless communication device 10a adds 1 to the counter value C1 (step It is determined whether the counter value C1 has reached the counter threshold value C1th (step S206). If the counter value C1 is not the counter threshold value C1th (step S207), If the counter value C1 becomes equal to the counter threshold value C1th, the process returns to step S203. When the determination result is "Yes" (step S207), the determination unit 170 of the wireless communication device 10a checks the counter value C1 is reset (C1=0) (step S208), and it is determined that real-time data transmission is not possible. Instead of the processes from step S206 to step S208, If a certain amount of time has elapsed since the real-time data transmission request, the real-time data transmission permission notification is not received. If the received signal is not received, it may be determined that real-time data transmission is not possible.

[0076] When a real-time data transmission permission notice is received from the wireless communication base station 2 (step S2 04; Yes), the determination unit 170 of the wireless communication device 10a determines that real-time data transmission is possible. Determine (step S205).

[0077] Returning to FIG. 6, if it is determined in step S2 that real-time data transmission is possible (FIG. 7), In step S205, the communication control unit 163 of the wireless communication device 10a receives the link from the communication unit 12. The transmission of real-time data is started (step S3). At this time, the microphone 17 collects sound. The output destination of the stored voice data (real-time data) is the voice data of the wireless communication device 10a. The data switch 168 switches to the communication unit 12. When the operation to stop transmission is performed by operating the operation unit 14 of the device 10a (step 6 of FIG. 6), Step S4), the communication control unit 163 of the wireless communication device 10a receives the real-time data from the communication unit 12. Then, the transmission of the data is stopped (step S5).

[0078] On the other hand, if it is determined in step S2 that real-time data transmission is not possible (step S3 in FIG. 7), In step S202, the storage control unit 164 of the wireless communication device 10a stores the voice data in the storage unit 13. At this time, the audio data collected by the microphone 17 is recorded (step S6). The output destination of the data (real-time data) is the audio data switching unit 168 of the wireless communication device 10a. After that, the storage unit 13 is switched to the storage unit 13 by the user's operation of the wireless communication device 10a. When the user operates the unit 14 to stop the transmission (step S7), The storage control unit 164 of the voice recorder 10a stops recording the voice data in the storage unit 13 (step S 8).

[0079] <Processing to determine whether or not audio recording data can be sent> 10 and 11, a wireless communication device 10a, which is a transmitting device, and a wireless communication base station A specific example of the process of determining whether or not the recorded data can be transmitted (step S9 in FIG. 6) at the base station 2 will be described. FIG. 10 shows an example of the flow of the process of determining whether or not the recording data can be transmitted in the transmitting device. FIG. 11 is a flowchart showing a process for determining whether or not to transmit recorded data in a wireless communication base station. 11 is a flowchart showing an example of a process flow.

[0080] In each process shown in FIG. 10 and FIG. 11, the wireless communication device 10a waits for transmission of recorded data. In the standby state, the wireless communication base station 2 is in a standby state for receiving a request to transmit recorded data from the wireless communication device 10a. It is assumed that the above is the case.

[0081] After the recording of the voice data in the memory unit 13 of the wireless communication device 10a, which is the transmitting device, is stopped, The communication control unit 163 of the communication device 10a sends a request to the wireless communication base station 2 to transmit the recorded data. The wireless communication device 10a controls the communication unit 12 to perform the wireless communication (step S901). When making a request to transmit recorded data to the base station 2, the identification information such as the identification ID of the own device, The identification information such as the identification ID of the own device and the location information may be transmitted periodically. In addition, the wireless communication device 10a may transmit the When making a request to transmit recorded data, the determination unit 170 of the wireless communication device 10a determines whether the wireless communication base station 2 The signal strength between the terminal and the mobile station may be used as an indicator to determine whether or not to request transmission of recorded data. Alternatively, the determination unit 170 of the wireless communication device 10a may determine the location information of the wireless communication device 10a, the remaining battery Whether or not to request transmission of recorded data may be determined based on the amount of data, the average transmission distance, etc. stomach.

[0082] As shown in FIG. 11, the determination unit 267 of the wireless communication base station 2 receives the signal from the wireless communication device 10a. It is determined whether or not a request to transmit recorded data has been received (step S911). If the request for transmitting recorded data from the wireless The determination unit 267 of the communication base station 2 receives the recording data transmission request from the wireless communication device 10a. The process of step S911 is repeated until the above is reached.

[0083] When a request to transmit recorded data is received from the wireless communication device 10a (step S911; s), the communication control unit 263 of the wireless communication base station 2 transmits the recording data to the wireless communication device 10a. The communication unit 22 is controlled to issue a transmission permission notice (step S912).

[0084] Returning to FIG. 10, the decision unit 170 of the wireless communication device 10a receives the recording data from the wireless communication base station 2. The wireless communication base station 2 determines whether or not a data transmission permission notification has been received (step S902). If the notification of permission to transmit recorded data has not been received from the Then, the process returns to step S901 and the recording data transmission standby state is resumed.

[0085] When the notification of permission to transmit recorded data is received from the wireless communication base station 2 (step S902; es), the determination unit 170 of the wireless communication device 10a determines that the recorded data can be transmitted (step (P S903).

[0086] Returning to FIG. 6, if it is determined in step S9 that the recorded data can be transmitted (step S10 in FIG. 10), Step S903), and a transmission process of the voice data (recorded data) stored in the storage unit 13 (step Then proceed to step S10).

[0087] 12 and 13, the processing of the wireless communication system 1 according to the first embodiment of the present disclosure will be described. 12 and 13 are diagrams illustrating a wireless communication system according to the first embodiment of the present disclosure. FIG. 11 is a sequence diagram showing a specific example of processing of the communication system.

[0088] As shown in FIG. 12, when a call transmission start operation is performed on the wireless communication device 10a (see FIG. 6), Step S1 of FIG. 7), the wireless communication device 10a, which is the transmitting device, is capable of transmitting (step S2 of FIG. 7). Step S201: Yes) and the mobile station is within the communication range of the wireless communication base station 2 (see FIG. 8). Step S212: Yes), and the wireless communication device 10b, which is the receiving device, is a wireless communication base station If the mobile station is within the transmission range of station 2 (step S215 in FIG. 8; Yes), When it is determined that the voice data (real-time data) collected by the microphone 17 can be transmitted, (step S205 in FIG. 7), and transmits real-time data (step S 3, S4, S5).

[0089] Also, for example, as shown in FIG. 13, when a talk start operation is performed on the wireless communication device 10a, When the signal is received (step S1 in FIG. 6), the wireless communication device 10a, which is the transmitting device, is not able to transmit. If so (step S201 in FIG. 7; No), the voice data collected by the microphone 17 (Real-time data) is judged to be unsendable (step S202 in FIG. 7), After recording real-time data (S6, S7, S8 in Fig. 6), the recording data is sent. 6), the recording data is transmitted to the wireless communication base station 2 (step S9 in FIG. 6). Top S10).

[0090] Similarly, when the wireless communication device 10a is not within the communication range of the wireless communication base station 2, If the wireless communication device 10b is not connected to the wireless communication base station 2 (step S212 in FIG. 8; No), or if the wireless communication device 10b is not connected to the wireless communication base station 2 If the microphone is not within the transmission range (step S215 in FIG. 8; No), 17 determines that the voice data (real-time data) collected cannot be sent ( Step S202 in FIG. 7), record real-time data (S6, S7, S8 in FIG. 6), After determining whether the recorded data can be transmitted (step S9 in FIG. 6), the recording The data is transmitted (step S10 in FIG. 6).

[0091] For this reason, for example, the group to which the wireless communication device 10 belongs and the communication channel (channel circumference) If the call channel is being used by another group that shares the same frequency band, or if the When the wireless communication device 10a is out of the communication range of the wireless communication base station 2, Or, the wireless communication device 10b, which is the receiving device, is outside the communication range of the wireless communication base station 2. Even if the user performs the operation to start transmission, transmission is not actually started. In situations where the signal strength is low and the transmitted content is lost, use microphone 1. The audio data (real-time data) collected in 7 is recorded. The obtained voice data (recorded data) is transmitted after it is determined whether the recorded data can be transmitted.

[0092] <Recording data transmission process> 14, the recording data transmission process ( A specific example of step S10) shown in FIG. 6 will be described. FIG. 14 shows the transmission side device. 13 is a flowchart showing an example of the flow of a recording data transmission process.

[0093] In the recording data transmission process shown in FIG. 14, the voice data ( The output destination of the recorded data is determined by the voice data switching unit 168 of the wireless communication device 10a. It is assumed that the setting has been switched to 2.

[0094] After it is determined in step S9 in FIG. 6 that the recorded data can be transmitted (step S10 in FIG. 10), In step S903, the communication quality measurement unit 169 of the wireless communication device 10a measures the BE R is measured (step S1001).

[0095] The determination unit 170 of the wireless communication device 10a determines the BER measured by the communication quality measurement unit 169. The wireless communication device 10a compares the first threshold value stored in the storage unit 13. The determination unit 170 determines whether the BER measured by the communication quality measurement unit 169 is smaller than the first threshold value. It is determined whether (BER<first threshold) (step S1002).

[0096] If the BER measured by the communication quality measurement unit 169 is equal to or greater than the first threshold (BER≧first threshold), If there is (step S1002; No), the determination unit 170 of the wireless communication device 10a The BER measured by the quality measurement unit 169 is smaller than a second threshold value that is larger than the first threshold value (B It is determined whether ER<second threshold value (step S1004).

[0097] If the BER measured by the communication quality measurement unit 169 is equal to or higher than the second threshold (BER≧second threshold), If there is (step S1004; No), the process returns to step S1001.

[0098] The BER measured by the communication quality measurement unit 169 is smaller than the second threshold (BER<second threshold). If the value is 0 (step S1004; Yes), the communication control unit 163 of the wireless communication device 10a A predetermined length of divided data from the beginning of the voice data (recorded data) stored in the storage unit 13 is The communication unit 12 is controlled to transmit the signal (step S1005).

[0099] FIG. 15A is a schematic diagram of recorded data stored in a storage unit of a wireless communication device. FIG. 1 is a schematic diagram of divided data showing an example of division of recorded data transmitted from a communication unit of a wireless communication device; As shown in FIG. 15A, the voice data stored in the storage unit 13 of the wireless communication device 10 is The start code ST is added by the speech start operation, and the end code ST is added by the speech stop operation. Includes completion code ED.

[0100] As shown in FIG. 15B, the divided data transmitted in step S1005 may include, for example, For example, identification information such as an identification ID of a wireless communication device and an identifier such as location information are added.

[0101] Returning to FIG. 14, the determination unit 170 of the wireless communication device 10a performs the determination in step S1005. It is determined whether there is any remaining recording data after the divided data is transmitted (step S1 In step S1005, the remaining recording data after the divided data is transmitted is If it exists in the storage unit 13 (step S1006; Yes), the process returns to step S1001 .

[0102] The BER measured by the communication quality measurement unit 169 is smaller than the first threshold (BER<first threshold). If the value is 0 (step S1002; Yes), the communication control unit 163 of the wireless communication device 10a In step S1005, the remaining recorded data after the divided data is transmitted is transmitted. In addition, the communication unit 12 is controlled so that the voice data is recorded in the storage unit 13 (step S1003). If the first measured BER after the recording is smaller than the first threshold, the recording data is not divided. Alternatively, all the information may be transmitted without any processing.

[0103] In step S1004 of the recording data transmission process shown in FIG. If the BER measured by the step S9 is equal to or greater than the second threshold (BER≧second threshold) (step S 1004; No), the transmission process of the recorded data remaining in the memory unit 13 is temporarily stopped. In step S1004 of the recording data transmission process shown in FIG. When the BER measured by step 9 becomes smaller than the second threshold (BER<second threshold) (step S1004: Yes), the transmission process of the recorded data remaining in the storage unit 13 is restarted.

[0104] <Recording data storage processing> A specific example of the recording data storage process in the wireless communication base station 2 will be described with reference to FIG. FIG. 16 is a flow chart showing an example of the flow of the recording data storage process in the wireless communication base station. This is a chart.

[0105] The determination unit 267 of the wireless communication base station 2 determines whether the wireless communication Recorded data transmitted from the receiving device 10a and received by the communication unit 22 of the wireless communication base station 2 It is determined whether the data is divided (step S1011). The determination unit 267 of the second station determines, for example, whether an identifier is added to the data, and If an identifier is added to the data, it is determined to be divided data.

[0106] If the recording data received by the communication unit 22 of the wireless communication base station 2 is not divided data ( In step S1011 (No), the memory control unit 264 of the wireless communication base station 2 The received recording data is stored in the storage unit 23 (step S1013). .

[0107] If the recording data received by the communication unit 22 is divided data (step S1011; (Yes), the data recovery unit 268 of the wireless communication base station 2 recovers the divided data received by the communication unit 22. The data is sequentially combined in chronological order and is then processed before being split in the audio recording data transmission process shown in Figure 14. The original recording data is restored (step S1012). The data restoration unit 268 restores a series of divided data based on, for example, an identifier added to the divided data. The data is then combined in chronological order and the original recording data before it is split is sent in the recording data transmission process shown in Figure 14. The storage control unit 264 of the wireless communication base station 2 restores the sound data by the data restoration unit 268. The audio data restored by the above is stored in the storage unit 23 (step S1013). .

[0108] <Recording data relay processing> 17 and 18, the recording data relay process in the wireless communication base station 2 and the receiving A specific example of a process for determining whether or not to transmit recorded data in the wireless communication device 10b, which is a receiving device, will be described. FIG. 17 shows an example of the flow of the recording data relay process in a wireless communication base station. FIG. 18 is a flow chart showing a process of determining whether or not the recording data can be transmitted in the receiving device. 1 is a flowchart showing an example of this.

[0109] The communication control unit 263 of the wireless communication base station 2 performs the following with respect to the wireless communication device 10b, which is a receiving device: The communication unit 22 is controlled so as to request transmission of the recorded data by the wireless communication unit 22 (step S1014). When making a request for transmitting recorded data to the wireless communication device 10b, the communication base station 2 A request to transmit identification information such as the ID of the device 10b, location information, etc. may be made. When the wireless communication base station 2 issues a request for transmitting recorded data to the wireless communication device 10b, The determination unit 267 of the base station 2 determines the recording data based on the signal strength between the base station 2 and the wireless communication device 10b. Alternatively, the determination unit 267 of the wireless communication base station 2 may determine whether or not to make a data transmission request. However, the location information of the wireless communication device 10b, the remaining battery level, and the transmission destination are received from the wireless communication device 10b. It may be possible to determine whether or not to make a request to transmit recorded data based on an average value of the reachable distance or the like.

[0110] As shown in FIG. 18, the determination unit 170 of the wireless communication device 10b receives a signal from the wireless communication base station 2. It is determined whether or not a request to transmit recorded data has been received (step S1021). If the request to transmit the recorded data from station 2 has not been received (step S1021; No), The determination unit 170 of the wired communication device 10b receives a request to transmit recorded data from the wireless communication base station 2. The process of step S1021 is repeated until the above is reached.

[0111] When a request to transmit recorded data is received from the wireless communication base station 2 (step S1021; s), the communication control unit 163 of the wireless communication device 10b transmits the recording data to the wireless communication base station 2. The communication unit 12 is controlled to issue a transmission permission notice (step S1022). 10b is a device identification when sending a recording data transmission permission notice to the wireless communication base station 2. Identification information such as an ID and location information may be transmitted. The location information and the like may be transmitted periodically.

[0112] Returning to FIG. 17, the determination unit 267 of the wireless communication base station 2 receives the recorded data from the wireless communication device 10b. The wireless communication device 1 determines whether or not a data transmission permission notification has been received (step S1015). If the notification of permission to transmit recorded data from 0b has not been received (step S1015; No), Then, return to the processing of step S1014.

[0113] When the notification of permission to transmit recorded data is received from the wireless communication device 10b (step S1015 ; Yes), and then the determination unit 267 of the wireless communication base station 2 determines whether the wireless communication device 10b has 23, it is determined whether the mobile station is within the communication range of the wireless communication base station 2 stored in the The wireless communication device 10b determines whether the wireless communication device 10b is within the transmission range of the wireless communication base station 2 (step S1016). If the device does not exist within the range of the 1016 (step S1016; No), the process of step S1014 is performed. Return to.

[0114] When the wireless communication device 10b is within the transmission range of the wireless communication base station 2 ( Step S1016: Yes), the communication control unit 263 of the wireless communication base station 2 The communication unit 22 is controlled to transmit the recording data to the 0b (step S1017). .

[0115] A specific example of the process of the wireless communication system 1 according to the first embodiment of the present disclosure will be described with reference to FIG. FIG. 19 is a specific example of the process of the wireless communication system according to the first embodiment of the present disclosure. FIG.

[0116] As shown in FIG. 19, a wireless communication base station 2 sends a signal to a wireless communication device 10b, which is a receiving device. When a request to transmit recorded data is made (step S1014 in FIG. 17), the wireless communication device When the wireless communication base station 2 is within the transmission range of the wireless communication base station 2 (step S10 in FIG. 17), Step S1016: Yes), it is determined that the recorded data can be transmitted, and the wireless communication base station 2 Then, the recording data is transmitted to the wireless communication device 10b (step S1017 in FIG. 17). ).

[0117] On the other hand, the wireless communication device 10b is not within the communication range of the wireless communication base station 2. If not (step S1016 in FIG. 17; No), it is determined that the recorded data cannot be transmitted. Therefore, the wireless communication base station 2 does not transmit the recorded data to the wireless communication device 10b.

[0118] The real-time data transmission availability determination process described in the first embodiment of the present disclosure above (Fig. 7, Fig. 8, and Fig. 9), Recording data transmission decision process (Fig. 10 and Fig. 11), Recording Data transmission process (Figure 14), recording data storage process (Figure 16), and recording data relay process ( By performing the processes shown in Figs. 17 and 18, the transmission can be performed even if the communication environment is not good. The contents of the conversation can be sent quickly.

[0119] [Modification of the first embodiment] In the first embodiment, when the wireless communication device 10 starts transmitting audio data, In the case of time data transmission, a real-time transmission request is made, and in the case of recording data transmission, a recording In this modified example, a common voice data transmission request is made in either case. Therefore, in the wireless communication base station 2, both real-time data and recorded data are collectively called This is sometimes referred to as voice data.

[0120] In this modification, the group and the call channel to which the wireless communication device 10 belongs in the communication system 1 are This example assumes that there are no other groups sharing the same channel frequency. That is, when the wireless communication device 10a, which is the transmitting device, makes a request to start transmission, When the device 10a is outside the communication range of the wireless communication base station 2, it is determined that communication is not possible. When the communication device 10a is within the communication range of the wireless communication base station 2, it is determined that communication is possible. In addition, in this modification, the wireless communication device 10b, which is the receiving device, is a wireless communication base station 2 capable of transmitting data. Therefore, it is assumed that the wireless communication device 10a is within the range of the wireless communication base station. In the case of 2, if you are within the transmission range, you can transmit, but if you are outside the range, you cannot transmit. be.

[0121] A specific example of the process of the wireless communication system 1 according to this modification will be described. Explanations of parts that overlap with the form may be omitted.

[0122] First, when the wireless communication device 10a is within the communication range of the wireless communication base station 2, When a call transmission start operation is performed on the wireless communication device 10a (step S1), The wireless communication device 10a performs a process of determining whether or not to transmit voice data collected by the microphone 17. Since the terminal is not connected to the base station 2 and is capable of transmitting voice (step S201), The voice data transmission request is sent to the voice communication device (step S203).

[0123] When the wireless communication base station 2 receives the voice data transmission request, the wireless communication The reception device 10a is within the transmission range of the wireless communication base station 2 (step S212; s), and the wireless communication device 10b is located within the communication range of the wireless communication base station 2. Therefore, (step S215; Yes), a voice data transmission permission message is sent to the wireless communication device 10a. The information is then transmitted to the host (step S216).

[0124] When the wireless communication device 10a receives a voice data transmission permission notification from the wireless communication base station 2, Then, real-time transmission of the voice data collected by the microphone 17 is started (step The wireless communication device 10a receives the voice data at the time of starting real-time transmission. The position information of the wireless communication device 10a is also included.

[0125] The wireless communication base station 2 receives the voice data and also stores the location information included in the voice data. The wireless communication base station 2 acquires the location information. It is determined whether the wireless communication device 10b is within the communication range, and since the wireless communication device 10b is within the communication range, the wireless communication device 10b transmits a voice signal to the wireless communication device 10b. Send data.

[0126] Next, when the wireless communication device 10a is outside the communication range of the wireless communication base station 2, The wireless communication device 10a is out of range of the wireless communication base station 2 and cannot transmit a voice. If there is (step S201; No), the voice data collected by the microphone 17 is recorded. The wireless communication device 10a starts recording the voice data into the recording data (step S6). The wireless communication device 10a includes the location information of the wireless communication device 10a at the time of starting the BE. R is measured and divided data is transmitted according to the BER in the same manner as in the first embodiment. When the data is divided and transmitted, identification information and location information are added to each piece of divided data. Thereafter, the wireless communication device 10a transmits the recorded data in the same manner as in the first embodiment.

[0127] The wireless communication base station 2 acquires the location information contained in the received voice data. The base station 2 determines whether the acquired location information is within the communication range of the wireless communication base station 2. The location information added to the voice data is outside the transmission range, so The audio data is determined to be divided data (divided recording data). The base station 2 receives the divided data in sequence in the same manner as in the first embodiment, and stores the original data before it is divided. It restores the sound data and relays the recorded data.

[0128] According to the first embodiment modification, the wireless communication device 10 can transmit both real-time data and recorded data. The wireless communication base station 2 also transmits a common transmission request for voice data for real-time data transmission. Whether it is voice data or recorded voice data, it is received with a common transmission request and the voice data is The location information in the data is used to distinguish between real-time data and recorded data, so the entire communication system The processing can be simplified as:

[0129] [Second embodiment] <Wireless communication system> A configuration of a wireless communication system according to a second embodiment of the present disclosure will be described with reference to FIG. FIG. 20 is a schematic diagram for explaining the configuration of a wireless communication system according to the second embodiment of the present disclosure. It's a mental diagram.

[0130] As shown in FIG. 20, a wireless communication system 1A according to the second embodiment of the present disclosure includes, for example, A wireless communication device 10a, a wireless communication device 10b, a wireless communication device 10c, and a wireless communication device 1 The wireless communication devices 10a to 10e include: They all belong to the same group.

[0131] The wireless communication devices 10a to 10e communicate with each other using a PTT (Push to Talk) method. Group communication is performed by one-way communication. The wireless communication device 10a to the wireless communication device 10e are within the transmission ranges Ra, Rb, Rc, In the second embodiment of the present disclosure, the transmitter is located within the range of Rd and Re. The possible ranges Ra, Rb, Rc, Rd, and Re are the ranges in which stable transmission and reception can be performed between each wireless communication device. This indicates the range in which the required radio wave strength can be obtained.

[0132] The wireless communication devices 10a to 10e communicate with each other through a plurality of communication channels (channel frequencies The number of groups is appropriately switched between the wireless communication device 10a and the wireless communication device 1 The call channel (channel frequency) used by 0e for group communication is wireless communication The wireless communication device 10a is shared with a group different from the group to which the wireless communication device 10e belongs. Hereinafter, the wireless communication devices 10a to 10e will be collectively referred to as wireless communication devices 1 0A. The number of wireless communication devices 10A that belong to the same group is not limited.

[0133] <Wireless communication device> Next, the configuration of a wireless communication device according to a second embodiment of the present disclosure will be described with reference to FIG. FIG. 21 is a block diagram showing an example of the configuration of a wireless communication device according to the second embodiment of the present disclosure. FIG.

[0134] As shown in FIG. 21, the wireless communication device 10A includes a GPS receiving unit 11, a communication unit 12, and a recording device. It includes a memory unit 13A, an operation unit 14, a display unit 15, a control unit 16A, and a microphone 17. The wireless communication device 10A shown in FIG. 21 has a group communication function using one-way communication of the PTT method. The wireless communication device includes a GPS receiver 11, a communication unit 12, an operation unit 14, a display unit 15, As for the microphone 17, since it has the same components as those in the first embodiment, the description thereof will be omitted.

[0135] The storage unit 13A has the functions of the storage unit 13 of the wireless communication device 10 in the first embodiment, and also has the functions of a group The voice data transmitted and received between each wireless communication device in the group is stored. The voice data transmitted and received between the wireless communication devices in the group is transmitted to each of the wireless communication devices in the group by the communication unit 12. In the present disclosure, the storage unit 13A stores the location information together with the location information received from the , the transmittable range of the own device (for example, the transmittable ranges Ra, Rb, Rc, Rd, Re) is stored.

[0136] The control unit 16A includes a device information acquisition unit 161, a location information acquisition unit 162, and a communication control unit 16 3, a memory control unit 164A, an operation control unit 165, a display control unit 166, and a sound processing unit 1 67, a voice data switching unit 168, a communication quality measuring unit 169, a determination unit 170A, and a data The device information acquisition unit 161, the location information acquisition unit 162, and the communication control unit 163, operation control unit 165, display control unit 166, audio processing unit 167, audio data switching unit 1 68 and the communication quality measurement unit 169 are the same as those in the first embodiment, so no explanation will be given here. Omitted.

[0137] The memory control unit 164A has the same functions as the memory control unit 164 of the wireless communication device 10 of the first embodiment. In addition, for example, the voice data transmitted from each wireless communication device in the group is The position information of the target device is stored in the storage unit 23 together with the position information of the target device.

[0138] The memory control unit 164A is the same as the memory control unit 164 of the wireless communication device 10 of the first embodiment. In addition to this function, for example, the transmittable range of the own device stored in the storage unit 13A is read out.

[0139] The determination unit 170A performs various determination processes in the wireless communication device 10A. The unit 170A, for example, determines the transmittable range of each wireless communication device in the group (for example, It is judged whether the device is within the transmission range Ra, Rb, Rc, Rd, Re shown in FIG. In the present disclosure, the determination unit 170A determines, for example, the automatic Based on the communication range of the device and the position information of each wireless communication device in the group, The determination unit determines whether each of the wireless communication devices in the communication area is within a communication range of the own device. A specific example of the determination process in 170A is described later in the real-time data transmission determination process. Processing for determining whether or not to transmit recorded data, processing for transmitting recorded data, and processing for relaying recorded data This will be explained in detail.

[0140] The data restoration unit 171 restores the data in the control unit 26 of the wireless communication base station 2 of the first embodiment. The data restoration unit 171 has the same function as the restoration unit 268. Specifically, the data restoration unit 171 receives the data from the communication unit 12. When the voice data received by the The audio data is restored by combining the audio data. A specific example of this process will be described in detail later in connection with the recording data storage and playback process.

[0141] Next, the wireless communication system 1 according to the second embodiment of the present disclosure will be described with reference to FIG. 22 and FIG. 23. 22 and 23 are diagrams illustrating a specific example of the wireless communication device according to the second embodiment of the present disclosure. FIG. 1 is a conceptual diagram for explaining a specific example of a communication system.

[0142] In FIG. 22, within the transmission ranges Ra, Rb, Rc, Rd, and Re of each wireless communication device, 1 shows an example in which a wireless communication device 20 that belongs to a different group from the wireless communication device 10A exists. The number of wireless communication devices 20 that belong to the same group is not limited.

[0143] In FIG. 23, among the wireless communication devices 10A that belong to the same group performing group communication, The wireless communication device 10a is within the transmission range Rb of the wireless communication devices 10b, 10c, 10d, and 10e. , Rc, Rd, and Re.

[0144] In the example shown in FIG. 22, for example, when the user performs a talk start operation on the wireless communication device 10a, However, the communication channel used in the group communication of the group to which the wireless communication device 10a belongs is If there is no vacant channel (channel frequency), that is, if the group to which the wireless communication device 10a belongs The communication channel (channel frequency) shared with the group to which the wireless communication device 20 belongs is If all the group communications are in use, including the group, The user must wait until the call is completed and the call channel (channel frequency) becomes available. Therefore, the wireless communication device 10a on which the start operation was performed cannot start transmitting.

[0145] In the example shown in FIG. 23, for example, the wireless communication devices 10b, 10c, 10d, and 10 The user is a wireless communication device 10a that is outside the communication ranges Rb, Rc, Rd, and Re of the wireless communication device 10a. When the user starts transmitting, the radio wave strength required for stable transmission and reception may not be obtained. There is a possibility that the transmitted content may be lost.

[0146] In this way, you can share a call channel (channel frequency) with other groups and In the wireless communication device 10A that performs group communication by one-way communication of the TT method, for example, After the user starts talking, an available channel (channel frequency) becomes available. For example, the time lag until the actual start of transmission, the transmittable range of each wireless communication device, Due to the decrease in radio wave strength caused by being outside the range of the communication area, the contents of the message cannot be transmitted promptly. There is a possibility that it is not.

[0147] The outline of the process of the wireless communication system 1A according to the second embodiment of the present disclosure is shown in FIG. The process is the same as that in the first embodiment, so the description will be omitted. The device 10a is a transmitting device (one wireless communication device), and the wireless communication device 10b is a receiving device (another This will be described as a wireless communication device.

[0148] <Real-time data transmission availability determination process> 24 and 25, the wireless communication device 10a, which is a transmitting device, and the receiving device The wireless communication device 10b performs a process of determining whether or not real-time data transmission is possible (see the flowchart in FIG. 6). A specific example of step S2) will be described. FIG. 24 shows a real-time data transfer in a transmitting device. FIG. 25 is a flowchart showing an example of the flow of a data transmission permission determination process. 1 is a flowchart showing an example of a flow of a process for determining whether or not real-time data can be transmitted in the .

[0149] In the processes shown in FIG. 24 and FIG. 25, the same processes as those in the first embodiment are denoted by the same reference numerals. In each process shown in FIG. 24 and FIG. 25, the wireless communication device 10a In the detection waiting state, the wireless communication device 10b receives real-time data from the wireless communication device 10a. The device is in a standby state to receive a communication request.

[0150] A user operates the operation unit 14 of the wireless communication device 10a to start transmission. When the determination unit 170A of the wireless communication device 10a receives the signal (step S1 in FIG. 6), the determination unit 170A of the wireless communication device 10a first As shown in FIG. 1, it is determined whether or not speech transmission is possible through the communication unit 12 (step S201 Specifically, the determination unit 170A of the wireless communication device 10a determines whether the If there is no signal received on any channel (channel frequency), the It is determined that transmission using the channel frequency is possible (step S201; The determination unit 170A of the wireless communication device 10a checks all the communication If there is a signal being received on the talk channel (channel frequency), it is determined that talk is not possible (status Top S201;No.

[0151] If voice transmission is not possible (step S201; No), the determination unit 170 of the wireless communication device 10a determines that real-time data transmission is not possible (step S202).

[0152] If speech transmission is possible (step S201; Yes), the communication control unit of the wireless communication device 10a The communication unit 163 is configured to transmit a real-time data transmission request to the wireless communication device 10b. The wireless communication device 10a controls the wireless communication device 10b. When making a real-time data transmission request to the Identification information such as the device's own ID and location information may be periodically transmitted. In addition, the wireless communication device 10a may transmit a link to the wireless communication device 10b. When making a real-time data transmission request, the determination unit 170A of the wireless communication device 10a Whether or not to make a real-time data transmission request is determined based on the radio wave strength between the device 10b and the Alternatively, the determination unit 170A of the wireless communication device 10a may determine whether the wireless communication device 10 Based on the location information of a, the battery level, the average transmission range, etc., It may be determined whether to make a request.

[0153] As shown in FIG. 25, the determination unit 170A of the wireless communication device 10b It is determined whether a real-time data transmission request has been received from the remote control (step S221A). If the real-time data transmission request is not received from the wireless communication device 10a (step S221A; No), the determination unit 170A of the wireless communication device 10b receives The process of step S221A is repeated until the real-time data transmission request is received. To carry out.

[0154] When a real-time data transmission request is received from the wireless communication device 10a (step S22 1A; Yes), and then the determination unit 170A of the wireless communication device 10b determines whether the wireless communication device 10a It is determined whether the device is within the transmission range of the device itself stored in the storage unit 13A. If the wireless communication device 10a is within the transmission range of the wireless communication device 10a, the wireless communication device 10a determines whether or not the wireless communication device 10a is within the transmission range of the wireless communication device 10a. If it does not exist (step S212A; No), the process returns to step S221A. The line communication device 10b returns to a standby state for receiving a real-time data transmission request from the line communication device 10a.

[0155] When the wireless communication device 10a is within the transmission range of the device itself (step S2 12A; Yes), the communication control unit 163 of the wireless communication device 10b 4, and controls the communication unit 12 to issue a real-time data transmission permission notice (step S2 22A). The wireless communication device 10b transmits real-time data to the wireless communication device 10a. When issuing the permission notification, identification information such as the identification ID of the own device, location information, and the like may be transmitted. Identification information such as the identification ID of the device itself, location information, etc. may be transmitted periodically. .

[0156] Returning to FIG. 24, the determination unit 170A of the wireless communication device 10a receives the request from the wireless communication device 10b. It is determined whether or not a real-time data transmission permission notification has been received (step S204A). If the real-time data transmission permission notice is not received from the wired communication device 10b (step If S204A; No), the determination unit 170A of the wireless communication device 10a performs The process of step S208 is performed. Instead of the process of steps S206 to S208, If a certain amount of time has elapsed since the real-time data transmission request, the real-time data transmission permission notification is not received. If the received signal is not received, it may be determined that real-time data transmission is not possible.

[0157] When the real-time data transmission permission notification is received from the wireless communication device 10b (step S 204A; Yes), and then the determination unit 170A of the wireless communication device 10a 0b is present within the transmission range of the own device stored in the storage unit 13A. (Step S215A). If it does not exist (step S215; No), the process returns to step S211. The line communication device 10b returns to a standby state for receiving a real-time data transmission request from the line communication device 10a.

[0158] When the wireless communication device 10b is within the transmission range of the device itself (step S2 15A; Yes), the determination unit 170A of the wireless communication device 10a determines whether real-time data transmission is possible. It is determined that the above is possible (step S205).

[0159] Returning to FIG. 6, if it is determined in step S2 that real-time data transmission is possible (FIG. 7), In step S205, the communication control unit 163 of the wireless communication device 10a receives the link from the communication unit 12. The transmission of real-time data is started (step S3). At this time, the microphone 17 collects sound. The output destination of the stored voice data (real-time data) is the voice data of the wireless communication device 10a. The data switch 168 switches to the communication unit 12. When the operation to stop transmission is performed by operating the operation unit 14 of the device 10a (step 6 of FIG. 6), Step S4), the communication control unit 163 of the wireless communication device 10a receives the real-time data from the communication unit 12. Then, the transmission of the data is stopped (step S5).

[0160] On the other hand, if it is determined in step S2 that real-time data transmission is not possible (step S3 in FIG. 24), In step S202, the storage control unit 164A of the wireless communication device 10a stores the voice Recording of data is started (step S6). At this time, the sound collected by the microphone 17 The output destination of the voice data (real-time data) is the voice data switching unit of the wireless communication device 10a. 168, the storage unit 13A is switched to the storage unit 13A. After that, the user When the operation unit 14 of a is operated to stop the transmission (step S7), The storage control unit 164A of the communication device 10a stops recording the voice data in the storage unit 13A. (Step S8).

[0161] <Processing to determine whether or not audio recording data can be sent> 26 and 27, the wireless communication device 10a, which is a transmitting device, and the receiving device The process of determining whether or not to transmit recorded data in the wireless communication device 10b (step S shown in FIG. 6) A specific example of 9) will be described. FIG. 26 shows the process of determining whether or not to transmit recorded data in the transmitting device. FIG. 27 is a flowchart showing an example of a process flow. 13 is a flowchart showing an example of the flow of a data transmission permission determination process.

[0162] In the processes shown in FIG. 26 and FIG. 27, the same processes as those in the first embodiment are denoted by the same reference numerals. In each process shown in FIG. 26 and FIG. 27, the wireless communication device 10a In a transmission standby state, the wireless communication device 10b receives a request to transmit recorded data from the wireless communication device 10a. The device is in a state of waiting for a signal.

[0163] After the recording of the voice data in the memory unit 13A of the wireless communication device 10a, which is the transmitting device, is stopped, The communication control unit 163 of the wired communication device 10a sends a recording data transmission request to the wireless communication device 10b. The wireless communication device 10a controls the communication unit 12 to make a request (step S901A). When making a request to transmit recorded data to the wireless communication device 10b, the wireless communication device 10b is notified of an identification such as an identification ID of the device itself. Other information, location information, etc. may be transmitted. Identification information such as the identification ID of the own device, location information, etc. In addition, the wireless communication device 10a may transmit the information periodically. When making a request to transmit recorded data to b, the determination unit 170A of the wireless communication device 10a Using the radio wave strength between the communication device 10b as an indicator, it is determined whether or not to make a request to transmit recorded data. Alternatively, the determination unit 170A of the wireless communication device 10a may Whether to request transmission of recorded data based on location information, remaining battery level, average transmission range, etc. It may be determined whether

[0164] As shown in FIG. 27, the determination unit 170A of the wireless communication device 10b It is determined whether a request to transmit recorded data has been received from the wireless communication device (step S911A). If the request to transmit the recorded data is not received from the device 10a (step S911A; No ), the determination unit 170A of the wireless communication device 10b determines whether the recorded data is transmitted from the wireless communication device 10a. The process of step S911A is repeated until a request is received.

[0165] When a request to transmit recorded data is received from the wireless communication device 10a (step S911A; es), the communication control unit 163 of the wireless communication device 10b transmits the recording data to the wireless communication device 10a. The communication unit 22 is controlled so as to issue a data transmission permission notice (step S912A).

[0166] Returning to FIG. 26, the determination unit 170A of the wireless communication device 10a receives the recording from the wireless communication device 10b. It is determined whether or not a notification of permission to transmit sound data has been received (step S902A). If the notification of permission to transmit recorded data is not received from the device 10b (step S902A; o), the process returns to step S901A, and the recording data transmission standby state is resumed.

[0167] When the notification of permission to transmit recorded data is received from the wireless communication device 10b (step S902A ; Yes), the determination unit 170A of the wireless communication device 10a determines that the recorded data can be transmitted ( Step S903).

[0168] Returning to FIG. 6, if it is determined in step S9 that the recorded data can be transmitted (step S10 in FIG. 10), Step S903), and a transmission process of the voice data (recorded data) stored in the storage unit 13 (step Then proceed to step S10).

[0169] 28 and 29, the processing of the wireless communication system 1A according to the second embodiment of the present disclosure will be described. 28 and 29 are diagrams showing a wireless communication system according to the second embodiment of the present disclosure. FIG. 11 is a sequence diagram showing a specific example of processing of the communication system.

[0170] As shown in FIG. 28, when a talk start operation is performed on the wireless communication device 10a (see FIG. 6), Step S1), the wireless communication device 10a, which is the transmitting device, is capable of transmitting (step S2 in FIG. 24). Step S201: Yes) and the wireless communication device 10b is within the transmission range (FIG. 25 step S212A; Yes), and the wireless communication device 10b, which is the receiving device, is wireless If the communication device 10a is within the transmission range (step S21 in FIG. 24), 5A; Yes), audio data (real-time data) collected by microphone 17 is transmitted. It is determined that this is possible (step S205 in FIG. 24), and real-time data is transmitted ( Steps S3, S4, and S5 in Figure 6).

[0171] Also, for example, as shown in FIG. 29, when a talk start operation is performed on the wireless communication device 10a, When the signal is received (step S1 in FIG. 6), the wireless communication device 10a, which is the transmitting device, is not able to transmit. If the voice data collected by the microphone 17 is not available (step S201 in FIG. 24; Yes), It is determined that the data (real-time data) cannot be transmitted (step S202 in FIG. 24). Then, real-time data is recorded (S6, S7, S8 in Fig. 6), and a decision is made as to whether or not the recorded data can be sent. After that (step S9 in FIG. 6), the recording data is transmitted to the wireless communication device 10b (FIG. Step S10 of 6).

[0172] Similarly, the wireless communication device 10a is not within the communication range of the wireless communication device 10b. If the wireless communication device 10b is a wireless communication device (step S212A in FIG. 25; No), or If the mobile station 10a is not within the transmission range of the mobile station 10a (step S215A in FIG. 24, o) The voice data (real-time data) collected by the microphone 17 cannot be transmitted. (step S202 in FIG. 24), and record the real-time data (S6 in FIG. 6, After determining whether the recorded data can be transmitted (step S7, S8), the wireless communication device 1 0b (step S10 in FIG. 6).

[0173] For this reason, for example, the group to which the wireless communication device 10 belongs and the communication channel (channel circumference) If the call channel is being used by another group that shares the same frequency band, or if the The wireless communication device 10a, which is a receiving device, is within the transmission range of the wireless communication device 10b, which is a receiving device. When the wireless communication device 10b, which is the receiving device, is outside the wireless communication device 10a, which is the transmitting device, When the user starts a call, the communication device 10a may be in a state where the communication device 10a is out of range. In some cases, transmission may not actually start even though the signal strength is low, or the content of the transmission may be lost due to a drop in signal strength. In the situation where the audio data collected by the microphone 17 (real-time data) is lost, The recorded voice data (recorded data) is then sent to the It is sent after determining whether it is trustworthy.

[0174] <Recording data transmission process> Recorded data transmission processing in the wireless communication device 10a, which is the transmitting device (steps shown in FIG. 6) Since step S10) is the same process as that in the first embodiment shown in FIG. 14, the description thereof will be omitted.

[0175] <Recording data storage and playback processing> 30, the recording data storage and playback process in the wireless communication device 10b, which is the receiving device, will be described. FIG. 30 shows a specific example of the process of storing and reproducing recorded data in the receiving device. 13 is a flowchart showing an example of a flow.

[0176] The determination unit 170A of the wireless communication device 10b determines whether the recorded data transmission process shown in FIG. A recording transmitted from the line communication device 10a and received by the communication unit 12 of the wireless communication device 10b. It is determined whether the data is divided data (step S1011A). The determination unit 170A of the communication device 10b determines, for example, whether an identifier is added to the data. If an identifier is added to the data, it is determined that the data is divided data.

[0177] If the recording data received by the communication unit 12 of the wireless communication device 10b is not divided data, (Step S1011A; No), the determination unit 170A of the wireless communication device 10b The recording data received by the 13A).

[0178] If the recording data received by the communication unit 12 is divided data (step S1011A ; Yes), the data recovery unit 171 of the wireless communication device 10b receives the The divided data is sequentially combined in a chronological order and divided in the recording data transmission process shown in FIG. The previous original recording data is restored (step S1012A). The data restoration unit 171 at b restores a series of data based on the identifier added to the divided data. The divided data is combined in chronological order and is then sent to the recording data transmission process shown in Figure 14. The storage control unit 164A of the wireless communication device 10b restores the original recording data. The sound recording data restored by the unit 171 is stored in the storage unit 13A (step After that, the recorded data stored in the memory unit 13A is played back through a speaker (not shown). The content is played back by the playback device (step S1014).

[0179] The real-time data transmission availability determination process described in the second embodiment of the present disclosure above (Fig. 24 and Fig. 25), the process of determining whether or not to transmit the recorded data (Fig. 26 and Fig. 27), The data transmission process (Fig. 14) and the recording data storage and playback process (Fig. 30) ensure good Even when a suitable communication environment is not available, the contents of the message can be transmitted promptly.

[0180] Although the embodiments of the present disclosure have been described above, the present invention is not limited to the contents of these embodiments. In addition, the above-mentioned components are not those that a person skilled in the art can easily imagine, and are not substantially different from the above-mentioned components. In addition, the above-mentioned components are appropriately Furthermore, the above-described embodiments may be combined without departing from the spirit of the present invention. Various omissions, substitutions or modifications of components may be made. [Explanation of symbols]

[0181] 1,1A Wireless Communication System 2. Wireless communication base station 10,10A Wireless communication device 11 GPS receiver 12 Communications Department 13,13A storage section 14 Control section 15 Display section 16,16A Control section 17. Mike 22 Communications Department 23 Memory section 26 Control Unit 161 Device information acquisition unit 162 Location information acquisition unit 163 Communication Control Unit 164, 164A Memory control unit 165 Operation control section 166 Display control section 167 Audio Processing Unit 168 Audio data switching unit 169 Communication Quality Measurement Unit 170,170A Judgment part 171 Data Recovery Department 261 Device information acquisition unit 262 Location information acquisition unit 263 Communication Control Unit 264 Memory Control Unit 267 Judgment section 268 Data Recovery Department

Claims

1. A wireless communication base station that relays communication between a plurality of wireless communication devices, A communication unit that transmits and receives signals to and from the wireless communication device; a storage unit in which at least a transmission range of the wireless communication base station is stored; Based on the position information of each of the wireless communication devices received by the communication unit, a determination unit that determines whether each of the devices is present within the transmission range; a control unit that controls at least the communication unit and the storage unit in response to a determination result of the determination unit; and, Equipped with The control unit is The wireless communication base station transmits a signal from one of the plurality of wireless communication devices to another wireless communication device. Send to location When relaying the voice data to be transmitted, the voice data transmitted from the first wireless communication device is When the data is divided into divided data, the divided data are sequentially combined in a time series; A control unit controls the restoration of voice data transmitted from a wireless communication device and the restoration of the voice data to be stored in the storage unit. In addition to controlling When the other wireless communication device is within the transmission range, the communication unit is controlled. and transmitting the voice data stored in the storage unit to the other wireless communication device. Wireless communication base station.

2. The control unit is configured to add the first wireless communication If the identifier related to the device is included, the data is determined to be the divided data.

2. The wireless communication base station of claim 1.

3. The determination unit determines whether or not the radio wave intensity of a signal received from another wireless communication device is equal to or greater than a predetermined value. death, When the determination result of the determination unit is equal to or greater than a predetermined value, the control unit transmitting a recording data transmission request signal to the other wireless communication device to request transmission of data; 2. The wireless communication base station of claim 1.

4. The determination unit determines location information, remaining battery power, and transmission determining whether any one of the average transmission distances is equal to or greater than a predetermined value; When the determination result of the determination unit is equal to or greater than a predetermined value, the control unit transmitting a recording data transmission request signal to the other wireless communication device to request transmission of data; 2. The wireless communication base station of claim 1.

5. A wireless communication base station that relays communication between a plurality of wireless communication devices, Sending and receiving signals to and from a wireless communication device; storing at least the transmission range of the wireless communication base station; Based on the received position information for each of the wireless communication devices, the wireless communication devices Determine whether or not the device is within a speaking range; The wireless communication base station transmits a signal from one of the plurality of wireless communication devices to another wireless communication device. When relaying the voice data transmitted from the first wireless communication device to the second wireless communication device, is divided into a plurality of divided data, the plurality of divided data are sequentially combined in a time series. and recovering the voice data transmitted from the one wireless communication device and controlling the data to be stored. At the same time, When the other wireless communication device is within the transmission range, the stored voice data is transmitting the data to the other wireless communication device; A wireless communication method.

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