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WO2017068980A1 - Dispositif de communication, procédé de commande de communication, et programme - Google Patents

Dispositif de communication, procédé de commande de communication, et programme Download PDF

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Publication number
WO2017068980A1
WO2017068980A1 PCT/JP2016/079650 JP2016079650W WO2017068980A1 WO 2017068980 A1 WO2017068980 A1 WO 2017068980A1 JP 2016079650 W JP2016079650 W JP 2016079650W WO 2017068980 A1 WO2017068980 A1 WO 2017068980A1
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WO
WIPO (PCT)
Prior art keywords
communication
group call
information
communication device
group
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2016/079650
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English (en)
Japanese (ja)
Inventor
佑介 高木
秀一 竹花
俊明 亀野
俊平 布施
英之 中西
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Sharp Corp
Original Assignee
Sharp Corp
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Filing date
Publication date
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Publication of WO2017068980A1 publication Critical patent/WO2017068980A1/fr
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Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/10—Push-to-Talk [PTT] or Push-On-Call services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the present invention relates to a communication device capable of communication between terminals without using a base station, a communication control method in the communication device, and a program for controlling the communication device.
  • D2D device to device
  • UE User Equipment
  • eNB evolved NodeB
  • Inter-terminal communication is also called D2D Proximity Services (ProSe). Proximity Services is standardized in Release 12 of 3GPP (3rd Generation Partnership Project).
  • MCPTT Mobility Critical Push-To-Talk
  • off-network communication and group call communication.
  • Patent Document 1 discloses “a mobile terminal capable of avoiding interference even if frequency allocation is determined between wireless terminals without going through a base station”. Specifically, the wireless terminal disclosed in Patent Literature 1 can communicate with other wireless terminals via a base station, and can directly communicate with each other without going through the base station. And a storage unit that stores the frequency notified from the use frequency notification unit of another wireless terminal, and stores when the own device starts direct communication. The frequency used by the own device is assigned avoiding the frequency broadcast from other wireless terminals (see [Summary]).
  • the wireless terminal of Patent Document 1 relates to a group call broadcast from another wireless terminal. Information must be constantly monitored.
  • the present invention has been made in view of the above problems, and its purpose is a communication device that does not need to constantly monitor information related to communication, a communication control method in the communication device, and a program for controlling the communication device Is to provide.
  • the communication device controls communication with a communication unit that performs communication with another communication device in the same group as the communication device, a determination unit that determines an information exchange period for exchanging information related to communication, and the communication And a processing unit.
  • the processing unit communicates, during the information exchange period, first information related to communication with another communication device, or second information related to communication performed by another communication device in a group different from the communication device and the other communication device. Receive via the part.
  • a mobile terminal (hereinafter referred to as “UE”) that constitutes a communication system will be described below.
  • UE mobile terminal
  • the same reference numerals are assigned to the same members. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.
  • examples of the UE include various mobile terminals such as a smartphone, a tablet terminal, and a fablet terminal.
  • the UE is not limited to these devices, and may be any communication device that can perform a group call by inter-terminal communication (D2D communication) without using a base station.
  • D2D communication inter-terminal communication
  • a configuration for determining a frequency band (configuration of “Embodiment 1”) and a configuration for determining a time slot (“Embodiment 2”).
  • a configuration (specifically, a configuration of“ Embodiment 3 ”) for determining a frequency band and a time slot (specifically, determining a resource block).
  • FIG. 1 is a diagram for explaining a schematic configuration of a communication system 1 according to the present embodiment.
  • the communication system 1 includes a plurality of UEs 111, 112, 113, 121, 122, 131, 132.
  • Each UE supports MCPTT (Mission Critical Push-To-Talk) including inter-terminal communication, off-network communication, and group call communication.
  • MCPTT Mobility Critical Push-To-Talk
  • UE 111, UE 112, and UE 113 form a first group.
  • Each of the UEs 111, 112, and 113 can perform group communication with a counterpart UE in the first group without going through a base station (not shown).
  • UE121 and UE122 form the 2nd group.
  • Each of the UEs 121 and 122 can perform group communication with a counterpart UE in the second group without using a base station.
  • the UE 131 and the UE 132 form a third group.
  • Each of the UEs 131 and 132 can perform group communication with a counterpart UE in the third group without using a base station.
  • communication is performed between UE 111, UE 121, and UE 131 in different groups. Details of the communication will be described later.
  • a group call is performed by terminal-to-terminal communication (specifically, direct communication in an off-network) without using a base station. Further, it is assumed that the group call is performed selectively using at least one of a plurality of frequency bands (specifically, band classes).
  • a plurality of frequency bands specifically, band classes.
  • each group it is assumed that one UE (administrator terminal) determined in advance among a plurality of UEs broadcasts information related to the group call including the group call ID.
  • All UE100 in each group may alert
  • FIG. 2 is a block diagram for explaining a functional configuration of the UE 100.
  • UE 100 receives control unit 10, storage unit 20, communication unit 30, display unit 40, transmission antenna 51, reception antenna 52, and GPS (Global Positioning System) signal reception.
  • Unit 60 broadcast wave receiver 70, hourly radio wave receiver 80, GPS signal antenna 53, broadcast wave antenna 54, and hourly radio wave antenna 55.
  • the control unit 10 includes a determination unit 11 and a processing unit 12.
  • the storage unit 20 includes a group call ID storage unit 21, a priority storage unit 22, and a frequency band storage unit 23.
  • the communication unit 30 includes a transmission unit 31 and a reception unit 32.
  • the control unit 10 corresponds to the processor of the UE. Specifically, the control unit 10 is realized by the processor executing various programs stored in the storage unit 20.
  • the storage unit 20 corresponds to a memory.
  • the communication unit 30 corresponds to a communication IF (Interface).
  • the storage unit 20 stores an operating system, various application programs, and various data.
  • the group call ID storage unit 21 stores the group call ID of the group to which the terminal belongs.
  • the group call ID storage unit 21 stores the group call ID received from the UE 100 of another group. Note that group call IDs of other groups are sequentially updated according to the implementation status of the group call.
  • the priority storage unit 22 stores a priority for a group call ID of a group to which the own terminal belongs (hereinafter also referred to as “group call ID of the own terminal”). Moreover, the priority received from the UE 100 of another group is stored in the priority storage unit 22.
  • the frequency band storage unit 23 stores information representing frequency bands that can be used for group calls of the group to which the terminal belongs. Further, the frequency band storage unit 23 stores information specifying the frequency band used in another group call received from the UE 100 of another group.
  • the display unit 40 displays various information based on instructions from the control unit 10. Details of the display on the display unit 40 will be described in a later-described modification.
  • the GPS signal receiving unit 60 receives the GPS signal via the GPS signal antenna 53.
  • the received GPS signal is sent to the control unit 10.
  • the broadcast wave receiving unit 70 receives television and radio broadcast waves via the broadcast wave antenna 54.
  • the received broadcast wave is sent to the control unit 10.
  • the hourly signal receiver 80 receives the standard time via the hourly signal antenna 55.
  • the received standard time information is sent to the control unit 10. How to use GPS signals, broadcast waves, and standard time information will be described later.
  • the control unit 10 controls the overall operation of the UE 100. Hereinafter, processing of the control unit 10 will be described.
  • the control part 10 monitors (monitors) the information regarding a group call at a predetermined timing as a common specification under the environment at the time of an off-network without using a base station. That is, the control unit 10 monitors information related to the group call (information exchange period for exchanging information related to communication) at a known timing in the other UE 100. Specifically, the control unit 10 monitors a section defined in advance in the communication system 1. Typically, the control unit 10 monitors a discovery period that periodically arrives.
  • the determination unit 11 of the control unit 10 determines an information exchange period (discovery section) in which information related to communication is exchanged.
  • the processing unit 12 controls the communication. Specifically, the processing unit 12 includes information (first information) related to communication with another UE 100 belonging to the same group, or information related to communication performed by another UE 100 in a group different from the own UE 100 and the other UE 100 (first information). 2 information) is received via the communication unit 30 during the determined information exchange period.
  • the UE 100 needs to synchronize with each UE 100 in order to monitor the section.
  • a specific example of the synchronization method will be described with reference to FIGS.
  • FIG. 10 is a diagram for explaining an example of a synchronization method.
  • FIG. 11 is a diagram for explaining another example of the synchronization method.
  • FIG. 12 is a diagram for explaining still another example of the synchronization method.
  • FIG. 13 is a diagram for explaining the synchronization correction.
  • FIG. 14 is a diagram for explaining a processing method when the synchronization signal cannot be acquired.
  • each UE 100 may synchronize using the GPS signal from the GPS satellite 910 received using the GPS signal antenna 53 and the GPS receiving unit 60.
  • the determination unit 11 determines an information exchange period (discovery section) based on the GPS signal received by the GPS signal reception unit 60.
  • UE100 may use another reference
  • each UE 100 may use a standard frequency time signal for notifying the standard time, which is received using the time signal radio antenna 55 and the time signal receiver 80, instead of the GPS signal from the GPS satellite 910. .
  • the determination unit 11 determines an information exchange period (discovery section) based on a signal (standard time information) received by the hourly radio wave reception unit 80.
  • a television broadcast signal transmitted from the television broadcast antenna 920 is received by the broadcast wave antenna 54 and the broadcast wave receiving unit 70, and a TOT (Time Offset) included in the received broadcast signal is received.
  • Time information called (Table) may be used.
  • each UE 100 may use time information included in an FM multiplexed signal of radio broadcasting.
  • the determination unit 11 determines the information exchange period (discovery section) based on the broadcast wave received by the broadcast wave reception unit 70.
  • RSU Raad Side Unit
  • V2X Vehicle-to-X
  • buildings for example, traffic lights 931 and 932, telephone poles 941
  • FIG. , 942, 943, 944 buildings
  • the RSU communicating with the network in normal times.
  • the UE 100 when there is no building or the like nearby and a synchronization signal cannot be acquired, the UE 100 having a group call ID having a high priority as shown in FIG. 14 and operating as an administrator (in FIG. 14, the ID is “001”).
  • the UE 100 may transmit a synchronization signal.
  • the other UEs 100 can operate in synchronization with each other by receiving this synchronization signal.
  • the control unit 10 receives the group call ID of the other group call and the group call ID of the group call ID from the other UE 100 performing another group call via the reception unit 32 and the reception antenna 52 by the monitor. Information on priority and information for specifying a frequency band used in the other group call are received. In this case, the receiving unit 32 sends the received group call ID, priority information, and information for specifying the frequency band to the control unit 10.
  • the control unit 10 includes a group call ID storage unit 21, a priority storage unit 22, a frequency band storage unit 23, a group call ID, priority information, and information for specifying a frequency band, respectively. Write to.
  • control unit 10 includes the group call ID of the own terminal, the priority of the group call ID, and information for specifying the frequency band used in the group call of the group to which the control unit 10 belongs.
  • a “discovery section” is an assigned radio resource for transmitting a discovery signal. The allocation may be performed in advance by the base station, or may be performed by the UE 100.
  • the control unit 10 of the UE 100 operating as an administrator uses the radio resource of the discovery signal to determine the group call ID of the own terminal, the priority of the group call ID, and the group call of the group to which the user belongs. Information for specifying a used frequency band is broadcast. More specifically, every time a discovery section arrives, the control unit 10 of the UE 100 determines the group call ID of the terminal itself, the priority of the group call ID, and the frequency band used in the group call of the group to which the user belongs. And information for identifying the.
  • the UE 100 of the admistor may set a section other than the discovery section and make an announcement in the set section.
  • the processing unit 12 of the control unit 10 communicates information (first information) related to communication with other UEs 100 belonging to the same group during the information exchange period (discovery section) determined by the determination unit 11. It transmits via the part 30.
  • the processing unit 12 is based on information (second information) related to communication performed by another UE 100 in a group different from that of the own UE 100 and the other UE 100, which is received during the information exchange period. To decide.
  • the processing unit 12 transmits the resource information via the communication unit 30 during an information exchange period (discovery period) or during an information exchange period (discovery period) different from the information exchange period (discovery period).
  • the control unit 10 can use a frequency that can be used for the group call of the group to which the terminal belongs.
  • a frequency band to be used for the group call is determined from the bands.
  • control unit 10 sets a frequency band other than the frequency band used by another group for the group call (a vacant frequency band) as a frequency band used for the group call of the own group. Specifically, the control unit 10 sets a frequency band based on the priority of the group call ID of the own group among the available frequency bands as a frequency band used for the group call of the own group.
  • FIG. 3 is a flowchart for explaining an example of a processing flow in the UE 100 functioning as an administrator.
  • UE100 monitors the group call of another group in step S2. Specifically, the group call ID of another group, the priority of the other group call ID, and the frequency band used in the other group call transmitted in the periodic discovery section are specified. And information to do.
  • step S4 the UE 100 determines whether or not a user operation for starting a group call of the own group has been accepted. If it is determined that the UE 100 has not accepted (NO in step S4), the process returns to step S2. If it is determined that the UE 100 has accepted (YES in step S4), the frequency band that can be used for the group call of the group to which the terminal belongs, stored in the frequency band storage unit 23 in step S6, and the received other The frequency band that can be used for the group call of the own group is determined based on the information for specifying the frequency band used in the group call. That is, the UE 100 determines a frequency band that is not used for the group call.
  • step S8 the UE 100 determines a frequency band to be used for the own group call based on the priority of the group call ID of the own group from the usable frequency band.
  • step S10 the UE 100 starts a group call of the own group in the determined frequency band.
  • step S12 the UE 100 determines whether or not a user operation for stopping (canceling) the group call of the own group has been accepted. When it is determined that the UE 100 has accepted (YES in step S12), the process returns to step S2. If it is determined that the UE 100 has not accepted (NO in step S12), the group call ID of the own group, the priority of the group call ID, and the frequency band used for the group call are determined in step S14. Information for specifying is notified to UEs 100 of other groups in a discovery section that periodically arrives. Specifically, the UE 100 performs the notification every time a discovery section arrives.
  • UE100 which is not functioning as an administrator performs processes other than step S14.
  • the UE 100 can make a group call by communication between terminals without using a base station.
  • the group call is performed by selectively using at least one of a plurality of frequency bands.
  • the UE 100 is configured to store a processor (control unit 10), a group call ID (identification information of a group call), and information for specifying a frequency band used for the group call ( A storage unit 20) and a communication interface (communication unit 30).
  • the processor of the UE 100 functioning as the administrator sends the group call ID and the group call of the own group to the other UE 100 that is making another group call.
  • Information for identifying the used frequency band is broadcast at a known timing (typically a discovery section) in another UE 100 via the communication interface (corresponding to step S14 in FIG. 3).
  • the UE 100 of another group may monitor the group call ID and information for specifying the frequency band at the above timing. Therefore, according to UE100, it becomes unnecessary to make UE100 of another group always monitor the alerting
  • the UE 100 can make a group call by inter-terminal communication without using a base station.
  • the group call is performed by selectively using at least one of a plurality of frequency bands.
  • the UE 100 includes a processor (control unit 10), a memory (storage unit 20) configured to store information for specifying a frequency band that can be used for group calls, and a communication interface (communication unit 30). Prepare.
  • the processor specifies the frequency band used in the other group call, which is broadcast at a known timing (typically a discovery section) in the own terminal from another UE 100 performing another group call. Is received via the communication interface. Based on the received information, the processor determines a frequency band to be used for the group call from the frequency bands that can be used for the group call (corresponding to steps S6 and S8 in FIG. 3).
  • the frequency band to be used for the group call of the own group is determined. Interference can be prevented. Furthermore, it is possible to efficiently use radio resources. That is, it is possible to increase the use efficiency of radio waves.
  • FIG. 4 is a flowchart for explaining an example of a processing flow in the UE 100 functioning as an administrator.
  • the flow of a series of processes shown in FIG. 4 includes steps S52, S54, and S56 instead of steps S8 and S10 shown in FIG. This is different from the series of processes shown in FIG.
  • step S52 the UE 100 displays information representing the frequency band that can be used for the group call of the own group on the display unit 40.
  • step S54 the UE 100 receives a user operation for selecting a frequency band to be used for the group call.
  • step S56 the UE 100 starts a group call in the selected frequency band.
  • FIG. 5 is a diagram showing a typical example of a user interface displayed when the user selects a frequency band.
  • UE 100 displays a plurality of band classes determined to be usable on display unit 40.
  • UE100 classify
  • the UE 100 may be configured to display not only the usable frequency band but also the frequency bands already used by other groups.
  • information related to the frequency band is displayed, but the displayed content is not limited to this.
  • information for requesting a group call ID having a low priority (for example, an individual private cell) to end a loop call may be added to the discovery section.
  • the UE 100 may perform a display prompting the display unit 40 to end the group call.
  • the UE 100 may prompt the user to reduce the bandwidth used for the group call.
  • FIG. 6 is a block diagram for explaining a functional configuration of UE 100 according to the present embodiment.
  • UE 100 includes control unit 10A, storage unit 20A, communication unit 30, display unit 40, transmission antenna 51, reception antenna 52, GPS signal reception unit 60, and broadcast.
  • a wave receiving unit 70, a time signal radio wave reception unit 80, a GPS signal antenna 53, a broadcast wave antenna 54, and a time signal radio wave antenna 55 are provided.
  • Control unit 10 ⁇ / b> A includes a determination unit 11 and a processing unit 12.
  • Storage unit 20 ⁇ / b> A includes group call ID storage unit 21, priority storage unit 22, and time slot storage unit 24.
  • the control unit 10A corresponds to a processor.
  • the UE 100 according to the present embodiment is different from the UE 100 (see FIG. 2) of the first embodiment having a configuration including the control unit 10 and the storage unit 20 in that the UE 100 includes the control unit 10A and the storage unit 20A. More specifically, the storage unit 20A of the UE 100 according to the present embodiment is different from the storage unit 20 of the UE 100 according to Embodiment 1 in that a time slot storage unit 24 is provided instead of the frequency band storage unit 23.
  • the time slot storage unit 24 stores information representing time slots that can be used for group calls of the group to which the terminal belongs. In addition, the time slot storage unit 24 stores information specifying a time slot used in another group call received from the UE 100 of another group.
  • the control unit 10A controls the overall operation of the UE 100. Hereinafter, the processing of the control unit 10A will be described.
  • the control unit 10A monitors (monitors) information related to a group call at a predetermined timing as a common specification in an off-network environment not via a base station. ) That is, 10 A of control parts monitor the information regarding a group call at a known timing in other UE100. Specifically, the control unit 10 ⁇ / b> A monitors a predetermined section in the communication system 1. Typically, the control unit 10A monitors discovery intervals that arrive periodically.
  • the control unit 10A receives the group call ID of the other group call and the group call ID of the other group call from the other UE 100 that makes another group call via the reception unit 32 and the reception antenna 52 by the monitor. Information on priority and information for specifying a time slot used in the other group call are received. In this case, the receiving unit 32 sends the received group call ID, priority information, and information for specifying a time slot to the control unit 10A.
  • the control unit 10A includes a group call ID storage unit 21, a priority storage unit 22, a time slot storage unit 24, a group call ID, priority information, and information for specifying a time slot, respectively. Write to.
  • the control unit 10A based on the start of the group call of its own group, the group of its own terminal via the transmission unit 31 and the transmission antenna 51
  • the call ID, the priority of the group call ID, and information for specifying the time slot used in the group call of the group to which the user belongs are known to other UEs 100 by other UEs 100. To inform.
  • control unit 10A determines the group call ID of the terminal itself, the priority of the group call ID, and information for specifying the time slot used in the group call of the group to which the control unit 10A belongs. Control to announce in the discovery section.
  • the control unit 10A of the UE 100 operating as an administrator uses the radio resource of the discovery signal to determine the group call ID of the own terminal, the priority of the group call ID, and the group call of the group to which the user belongs. Information for identifying the time slot being used is broadcast. More specifically, every time a discovery section arrives, the control unit 10A of the UE 100 determines the group call ID of the terminal itself, the priority of the group call ID, and the time slot used in the group call of the group to which the UE belongs. And information for identifying the.
  • the UE 100 as an admistor may set a section other than the discovery section and make an announcement in the set section.
  • the control unit 10A can use the time available for the group call of the group to which the terminal belongs. A time slot to be used for the group call is determined from the slots.
  • control unit 10A sets time slots (vacant time slots) other than the time slots used for group calls by other groups as time slots used for the group calls of the own group. Specifically, the control unit 10A sets a time slot based on the priority of the group call ID of the own group among the available time slots as a time slot used for the group call of the own group.
  • FIG. 7 is a flowchart for explaining an example of a process flow in the UE 100 functioning as an administrator.
  • UE100 monitors the group call of another group in step S102. Specifically, the group call ID of another group, the priority of the other group call ID, and the time slot used in the other group call that are transmitted in the periodic discovery period are specified. And information to do.
  • step S104 the UE 100 determines whether or not a user operation for starting a group call of the own group has been accepted. If it is determined that the UE 100 has not accepted (NO in step S104), the process returns to step S102.
  • step S106 the frequency band that can be used for the group call of the group to which the terminal belongs, stored in the time slot storage unit 24, and the other received
  • the time slot that can be used for the group call of the own group is determined based on the information for specifying the time slot used in the group call of the current group. That is, the UE 100 determines a time slot that is not used for the group call.
  • step S108 the UE 100 determines a time slot to be used for the own group call based on the priority of the group call ID of the own group from the available time slots.
  • step S110 the UE 100 starts a group call of the own group in the determined frequency band.
  • step S112 the UE 100 determines whether or not a user operation for stopping (canceling) the group call of the own group has been accepted. If it is determined that the UE 100 has accepted (YES in step S112), the process returns to step S102. If it is determined that the UE 100 has not accepted (NO in step S112), the group call ID of the own group, the priority of the group call ID, and the time slot used for the group call are determined in step S114. Information for specifying is notified to UEs 100 of other groups in a discovery section that periodically arrives. Specifically, the UE 100 performs the notification every time a discovery section arrives.
  • UE100 which is not functioning as an administrator performs processes other than step S114.
  • the UE 100 can make a group call by communication between terminals without using a base station.
  • the group call is performed selectively using at least one of a plurality of time slots.
  • the UE 100 is configured to store a processor (control unit 10A), a group call ID (identification information of a group call), and information for specifying a time slot used for the group call ( 20A) and a communication interface (communication unit 30).
  • the processor of the UE 100 functioning as the administrator sends the group call ID and the group call of the own group to the other UE 100 that is making another group call.
  • Information for identifying the used time slot is broadcast at a known timing (typically a discovery period) in another UE 100 via the communication interface (corresponding to step S114 in FIG. 7).
  • the UE 100 of another group may monitor the group call ID and information for specifying the time slot at the above timing. Therefore, according to UE100, it becomes unnecessary to make UE100 of another group always monitor the alerting
  • the UE 100 can make a group call by inter-terminal communication without using a base station.
  • the group call is performed selectively using at least one of a plurality of time slots.
  • the UE 100 includes a processor (control unit 10A), a memory (storage unit 20A) configured to store information for specifying a time slot that can be used for a group call, and a communication interface (communication unit 30). Prepare.
  • the processor specifies a time slot used in the other group call, which is broadcast at a known timing (typically a discovery period) in the own terminal from another UE 100 performing another group call. Is received via the communication interface. Based on the received information, the processor determines a time slot to be used for the group call from the time slots available for the group call (corresponding to steps S106 and S108 in FIG. 7).
  • the time slot used for the group call of the own group is determined. Interference can be prevented. Furthermore, it is possible to efficiently use radio resources. That is, it is possible to increase the use efficiency of radio waves.
  • FIG. 8 is a block diagram for explaining a functional configuration of UE 100 according to the present embodiment.
  • UE 100 includes control unit 10B, storage unit 20B, communication unit 30, display unit 40, transmission antenna 51, reception antenna 52, GPS signal reception unit 60, and broadcast.
  • a wave receiving unit 70, a time signal radio wave reception unit 80, a GPS signal antenna 53, a broadcast wave antenna 54, and a time signal radio wave antenna 55 are provided.
  • the control unit 10B includes a determination unit 11 and a processing unit 12.
  • the storage unit 20B includes a group call ID storage unit 21, a priority storage unit 22, a frequency band storage unit 23, and a time slot storage unit 24.
  • the control unit 10B corresponds to a processor.
  • the UE 100 according to the present embodiment is different from the UE 100 (see FIG. 2) of the first embodiment having a configuration including the control unit 10 and the storage unit 20 in that the control unit 10B and the storage unit 20B are provided. More specifically, storage unit 20B of UE 100 according to the present embodiment is different from storage unit 20 of UE 100 according to Embodiment 1 in that it further includes time slot storage unit 24.
  • the control unit 10B controls the overall operation of the UE 100. Hereinafter, the process of the control unit 10B will be described.
  • the control unit 10B monitors group call information at a predetermined timing as a common specification in an off-network environment not via a base station. (Monitor. That is, the control unit 10B monitors information related to the group call at a known timing in another UE 100. Specifically, the control unit 10B monitors a section defined in advance in the communication system 1. Typically, the control unit 10B monitors discovery intervals that arrive periodically.
  • the control unit 10B receives the group call ID of the other group call and the group call ID of the other group call from the other UE 100 performing another group call via the reception unit 32 and the reception antenna 52 by the monitor. Information on priority and information for specifying the frequency band and time slot used in the other group call are received. In this case, the receiving unit 32 sends the received group call ID, priority information, and information for specifying the frequency band and time slot to the control unit 10B.
  • the control unit 10B includes a group call ID storage unit 21, a priority storage unit 22, and a time slot storage for group call ID, priority information, and information for specifying a frequency band and a time slot, respectively. Write to part 24.
  • the control unit 10B based on the start of the group call of its own group, the group of its own terminal via the transmission unit 31 and the transmission antenna 51
  • the other UE 100 receives the call ID, the priority of the group call ID, and information for specifying the frequency band and time slot used in the group call of the group to which the user belongs. Notification is made at a known timing.
  • control unit 10B determines the group call ID of the terminal itself, the priority of the group call ID, and the frequency band and time slot used in the group call of the group to which the control unit 10B belongs. Are controlled in the discovery section.
  • the control unit 10B of the UE 100 operating as an administrator uses the radio resource of the discovery signal to determine the group call ID of the own terminal, the priority of the group call ID, and the group call of the group to which the user belongs.
  • Information for specifying a used frequency band and time slot is broadcast. More specifically, every time a discovery section arrives, the control unit 10B of the UE 100 determines the group call ID of the terminal itself, the priority of the group call ID, and the frequency band used in the group call of the group to which the user belongs. And information for specifying the time slot.
  • the UE 100 as an admistor may set a section other than the discovery section and make an announcement in the set section.
  • the control unit 10B belongs to its own terminal based on the received information (group call ID, priority, information for specifying the frequency band, information for specifying the time slot).
  • a resource block to be used for the group call is determined from among the resource blocks available for the group call of the group.
  • control unit 10B uses a frequency band (vacant frequency band) used by another group for the group call and a time slot other than the time slot used by the other group for the group call (
  • the radio resource specified by (vacant time slot) is a frequency band and time slot used in the group call of the own group.
  • FIG. 9 is a flowchart for explaining an example of a process flow in the UE 100 functioning as an administrator.
  • UE100 monitors the group call of another group in step S202. Specifically, the group call ID of another group, the priority of the other group call ID, the frequency band and time used in the other group call, which are transmitted in a periodic discovery section. Information for identifying the slot is monitored.
  • step S204 the UE 100 determines whether or not a user operation for starting a group call of the own group has been accepted. If it is determined that the UE 100 has not accepted (NO in step S204), the process returns to step S202.
  • step S206 the frequency band and time slot that can be used for the group call of the group to which the terminal belongs and the received other group call are used.
  • the resource block that can be used for the group call of the own group is determined based on the information for specifying the existing frequency band and time slot. That is, the UE 100 determines a resource block that is not used for the group call.
  • step S208 the UE 100 determines a resource block to be used for the own group call from the available resource blocks based on the priority of the group call ID of the own group.
  • step S210 UE100 starts the group call of a self group with the determined resource block.
  • step S212 the UE 100 determines whether or not a user operation for stopping (canceling) the group call of the own group has been accepted. If it is determined that the UE 100 has accepted (YES in step S212), the process returns to step S202. If it is determined that the UE 100 has not accepted (NO in step S212), in step S214, the group call ID of the own group, the priority of the group call ID, the frequency band used for the group call, and Information for specifying a time slot (that is, information for specifying a resource block) is broadcast to UEs 100 of other groups in a discovery interval that periodically arrives. Specifically, the UE 100 performs the notification every time a discovery section arrives.
  • UE100 which is not functioning as an administrator performs processes other than step S214.
  • the UE 100 can make a group call by communication between terminals without using a base station.
  • the group call is performed by selectively using at least one of a plurality of resource blocks.
  • the UE 100 specifies a processor (control unit 10B), a group call ID (identification information of a group call), and information for specifying a resource block used for the group call (that is, a frequency band and a time slot)
  • a memory storage unit 20B configured to store the communication interface (communication unit 30).
  • the processor of the UE 100 functioning as the administrator specifies the group call ID and the resource block for the other UE 100 that is making another group call based on the start of the group call of the own group.
  • Information is broadcast at a known timing (typically a discovery section) in another UE 100 via the communication interface (corresponding to step S114 in FIG. 7).
  • the UE 100 of another group may monitor the group call ID and information for specifying the resource block at the above timing. Therefore, according to UE100, it becomes unnecessary to make UE100 of another group always monitor the alerting
  • the UE 100 can make a group call by inter-terminal communication without using a base station.
  • the group call is performed by selectively using at least one of a plurality of resource blocks.
  • the UE 100 includes a processor (control unit 10A), a memory (storage unit 20A) configured to store information for specifying resource blocks that can be used for group calls, and a communication interface (communication unit 30). Prepare.
  • the processor specifies a resource block used in the other group call, which is broadcasted at a known timing (typically a discovery section) from the other UE 100 that is making another group call at the own terminal. Is received via the communication interface. Based on the received information, the processor determines a resource block to be used for the group call from among the resource blocks that can be used for the group call (corresponding to steps S106 and S108 in FIG. 7).
  • the resource block used for the group call of the own group is determined, so that the group calls between the group calls can be determined. Interference can be prevented. Furthermore, it is possible to efficiently use radio resources. That is, it is possible to increase the use efficiency of radio waves.
  • Embodiment 1 focuses on only the frequency band as the radio resource.
  • attention is paid only to time slots as radio resources.
  • attention is paid to resource blocks as radio resources. That is, Embodiment 3 focuses on the frequency band and time slot.
  • the UE 100 has the following configuration.
  • the UE 100 can make a group call by communication between terminals without using a base station.
  • the group call is performed by selectively using at least one of a plurality of radio resources.
  • the UE 100 includes a processor, a group call ID (group call identification information), a memory configured to store information for specifying a radio resource used for the group call, a communication interface (communication) Part 30).
  • the processor of the UE 100 functioning as an administrator is for specifying the group call ID and the radio resource for the other UE 100 performing another group call based on the start of the group call of the own group.
  • Information is broadcast at a known timing (typically a discovery period) in another UE 100 via the communication interface.
  • the UE 100 can make a group call by inter-terminal communication without using a base station.
  • the group call is performed by selectively using at least one of a plurality of radio resources.
  • the UE 100 includes a processor, a memory configured to store information for specifying a frequency band that can be used for a group call, and a communication interface (communication unit 30).
  • the processor specifies a radio resource used in the other group call, which is broadcast at a known timing (typically a discovery period) in the own terminal from another UE 100 performing another group call. Is received via the communication interface. Based on the received information, the processor determines radio resources to be used for the group call from radio resources available for the group call.
  • a known timing typically a discovery period
  • the processing in the UE 100 in each of the above first to third embodiments is realized by software executed by each hardware and processor (corresponding to the control units 10, 10A, and 10B).
  • Such software may be stored in advance in a memory (corresponding to the storage units 20, 20A, 20B).
  • the software may be stored in other storage media and distributed as a program product.
  • the software may be provided as a program product that can be downloaded by an information provider connected to the so-called Internet.
  • Such software is read from the storage medium by a reading device (not shown) or downloaded via a communication IF (corresponding to the communication unit 30) or the like and then temporarily stored in the memory.
  • the software is stored in memory in the form of an executable program by the processor.
  • the processor executes the program.
  • Each component which comprises UE100 shown by FIG. 2 etc. is a general thing. Therefore, it can be said that an essential part of the present invention is software stored in a memory or a storage medium, or software downloadable via a network.
  • a communication device capable of a group call by inter-terminal communication not via a base station, The group call is performed selectively using at least one of a plurality of radio resources,
  • the communication device A processor;
  • a memory configured to store identification information of the group call and information for identifying a radio resource used for the group call;
  • a communication interface The processor is configured to identify the identification information and a radio resource used for the group call with respect to another communication device performing another group call based on the start of the group call.
  • a communication device that broadcasts information at a known timing in the other communication device via the communication interface.
  • the group call is performed selectively using at least one of a plurality of frequency bands
  • the memory stores information for specifying a frequency band used for the group call as information for specifying a radio resource used for the group call
  • the processor as information for specifying a radio resource used for the group call, information for specifying a frequency band used for the group call at a known timing in the other communication device.
  • the communication device according to (1) which performs notification.
  • the group call is performed selectively using at least one of a plurality of time slots
  • the memory stores information for specifying a time slot used for the group call as information for specifying a radio resource used for the group call
  • the processor uses information for identifying a time slot used for the group call as information for identifying a radio resource used for the group call at a known timing in the other communication device.
  • the communication device according to (1) which performs notification.
  • the group call is performed selectively using at least one of a plurality of frequency bands
  • the memory stores information for specifying a frequency band that can be used for the group call as information for specifying a radio resource that can be used for the group call.
  • the processor is Receiving information for specifying a frequency band used in the other group call as information for specifying a radio resource used in the other group call;
  • the communication apparatus according to (4), wherein a frequency band used for the group call is determined as a radio resource used for the group call.
  • the group call is performed selectively using at least one of a plurality of frequency bands
  • the memory stores information for identifying a time slot usable for the group call as information for identifying a radio resource usable for the group call
  • the processor is Receiving information for specifying a time slot used in the other group call as information for specifying a radio resource used in the other group call;
  • the communication apparatus according to (4), wherein a time slot used for the group call is determined as a radio resource used for the group call.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un UE (100) qui est un dispositif de communication et qui comprend : une unité de communication (30) qui effectue une communication avec un autre UE dans le même groupe ; une unité de détermination (11) qui détermine une période d'échange d'informations au cours de laquelle des informations se rapportant à la communication sont échangées ; et une unité de traitement (12) qui commande la communication. Pendant la période d'échange d'informations, l'unité de traitement (12) reçoit, par l'intermédiaire de l'unité de communication (30), des premières informations relatives à la communication avec l'autre UE, ou des secondes informations relatives à une communication effectuée par encore un autre UE dans un groupe qui est différent du groupe auquel l'UE (100) et ledit autre UE appartiennent.
PCT/JP2016/079650 2015-10-21 2016-10-05 Dispositif de communication, procédé de commande de communication, et programme Ceased WO2017068980A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000165930A (ja) * 1998-11-30 2000-06-16 Clarion Co Ltd 無線通信ネットワークシステム
JP2004194086A (ja) * 2002-12-12 2004-07-08 Nec Corp 移動通信システムと無線基地局制御システムおよび無線基地局制御方法
JP2006094229A (ja) * 2004-09-24 2006-04-06 Toshiba Corp アドホック無線通信システムにおけるチャネル設定方法
JP2012039451A (ja) * 2010-08-09 2012-02-23 Sumitomo Electric Ind Ltd 基地局装置、基地局間同期方法、同期情報のデータ構造、及び同期要求のデータ構造
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JP2000165930A (ja) * 1998-11-30 2000-06-16 Clarion Co Ltd 無線通信ネットワークシステム
JP2004194086A (ja) * 2002-12-12 2004-07-08 Nec Corp 移動通信システムと無線基地局制御システムおよび無線基地局制御方法
JP2006094229A (ja) * 2004-09-24 2006-04-06 Toshiba Corp アドホック無線通信システムにおけるチャネル設定方法
JP2012039451A (ja) * 2010-08-09 2012-02-23 Sumitomo Electric Ind Ltd 基地局装置、基地局間同期方法、同期情報のデータ構造、及び同期要求のデータ構造
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