WO2014187305A1 - Procédé de communication de groupes d'adjacence et terminal - Google Patents

Procédé de communication de groupes d'adjacence et terminal Download PDF

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Publication number
WO2014187305A1
WO2014187305A1 PCT/CN2014/077875 CN2014077875W WO2014187305A1 WO 2014187305 A1 WO2014187305 A1 WO 2014187305A1 CN 2014077875 W CN2014077875 W CN 2014077875W WO 2014187305 A1 WO2014187305 A1 WO 2014187305A1
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WIPO (PCT)
Prior art keywords
group call
call session
group
priority
terminal
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PCT/CN2014/077875
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English (en)
Chinese (zh)
Inventor
王胡成
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电信科学技术研究院
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Publication of WO2014187305A1 publication Critical patent/WO2014187305A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast
    • 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
    • H04W4/08—User group management

Definitions

  • the present invention relates to the field of proximity communication technologies, and in particular, to a proximity group communication method and a terminal.
  • Proximity-based Services working item (ProSe) group communication (called proximity group communication) is a communication mode proposed to meet public security requirements.
  • ProSe group communication can support multicast mode and broadcast. Point-to-multipoint communication of the pattern.
  • the 3rd Generation Partnership Project (3GPP) proposes two implementation methods for ProSe group communication: Group Owner (GO) mode ProSe group communication and mobile self-organizing (Ad Hoc) mode ProSe group communication, the following is a description of the two modes of ProSe group communication.
  • This mode is applicable to a stable group ownership scenario.
  • a neighboring communication group there is a User Equipment (UE) as a GO, which is the central coordination node of the group.
  • the GO authenticates each other with each UE as a member of the group, so that the group members join the neighboring communication group, and the GO assigns an Internet Protocol (IP) address to each group member.
  • IP Internet Protocol
  • the group call data is sent to the GO in a unicast mode, and the GO distributes the group call data to all members in the group through multicast, broadcast, or unicast mode.
  • This mode can be used as the default ProSe group communication mode, which is used when GO is not found.
  • the Ad Hoc mode group uses a distributed architecture. Because there is no centralized IP address allocation mechanism, Ad Hoc mode group communication is implemented based on layer 2.
  • the UE When the UE needs to initiate a group call to other UEs, first perform "carrier sensing", that is, check whether the medium is busy; if the medium is idle, the UE sends a setup (SETUP, su) frame to preempt the medium; after transmitting the last su frame, Start to transmit a talk burst (tb) frame; when the tb frame transmission ends, the UE sends a transmission stop (txc) frame to indicate to other UEs in the group that the preemption medium can be started, that is, the medium is indicated to be idle.
  • the so-called medium is the channel resource used by the data transmission at the physical layer.
  • the su frame, the tb frame, and the txc frame sent by the UE use the multicast address in the layer-2 Destination Address field of the data frame.
  • the object of the present invention is to provide a proximity group communication method and a terminal to solve the problem of how the terminal preempts the voice right to establish a new group call session during the current group call session.
  • a neighboring group communication method when performing a first group call session of a neighbor group communication, if a second group call session of the neighbor group communication needs to be established, the method includes:
  • the second group call session is established.
  • a priority comparison module configured to compare a priority of the first group of call sessions with a priority of the second group of call sessions to be established
  • a group call session establishing module configured to establish the second group call when the comparison result of the priority comparison module is that the priority of the second group call session is higher than the priority of the first group call session Conversation.
  • the two can be compared.
  • the group calls the priority of the session to determine whether to establish a new group call session. Specifically, if the priority of the new group call session is higher than the priority of the current group call session, a new group call session is established, so that the terminal that needs to initiate a new group call session preempts the voice.
  • FIG. 1 is a flowchart of a method according to an embodiment of the present invention
  • FIG. 2 is a signaling diagram of a first method according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a second method according to an embodiment of the present disclosure.
  • FIG. 4 is a signaling diagram of a third method according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of media preemption according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a first terminal according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a second terminal according to an embodiment of the present invention. detailed description
  • the priority of the two group call sessions can be compared to determine whether to establish a new group call session. Specifically, if the priority of the new group call session is higher than the priority of the current group call session, a new group call session is established, so that the terminal that needs to initiate a new group call session preempts the voice.
  • the embodiment of the present invention provides a neighbor group communication method, and the implementation manner thereof is as shown in FIG. Operation:
  • Step 100 Compare the priority of the first group of call sessions with the priority of the second group of call sessions to be established.
  • Step 110 Establish a second group call session when the priority of the second group call session is higher than the priority of the first group call session.
  • the priority of the first group of call sessions may be the priority of the terminal that initiates the first group of call sessions, or the priority of the user who initiates the call of the first group of call sessions, or may be the first
  • the priority of the neighboring communication group in which the terminal of the call group is located may also be the priority of the terminal that initiates the first group call session, the priority of the user who initiates the terminal of the first group call session, and/or initiate the first The priority determined by the priority of the neighboring communication group where the terminal of the group call session is located.
  • the priority of the second group of call sessions may be the priority of the terminal that initiates the second group of call sessions, or the priority of the user of the terminal that initiates the second group of call sessions, or the second group call may be initiated.
  • the priority of the neighboring communication group where the terminal of the session is located may also be the priority of the terminal that initiates the second group of call sessions, the priority of the user of the terminal that initiates the second group of call sessions, and/or the second group call session. The priority of the terminal that is located adjacent to the priority of the communication group.
  • the process shown in Figure 1 may be the process of the initiator of the second group of call sessions in the Ad Hoc mode or the Group Owner mode, or the second group of call sessions in the Ad Hoc mode or the Group Owner mode.
  • the processing flow of the receiver can also be the processing flow of the GO in the Group Owner mode.
  • the processing flow of the receiver and initiator of the second group of call sessions is further described below.
  • the second group call receives, by the receiver of the second group of call sessions, a request for establishing a second group call session, comparing the priority of the first group of call sessions with the priority of the second group of call sessions to be established, the second group call
  • the session establishment request carries the priority of the second group of call sessions.
  • the receiver receives a second group call setup request from the GO.
  • the receiver receives a second group call setup request from the initiator of the second group call session.
  • the priority of the second group of call sessions carried in the setup request of the second group of call sessions is also saved.
  • the priority of the second group of call sessions may be saved before the priority is compared, or the priority of the second group of call sessions may be saved after the priority is compared.
  • the priority of the second group call session carried in the second group call session establishment request may be saved when the priority of the second group call session is higher than the priority of the first group call session. If the priority of the second group call session is lower than the priority of the first group call session, the second group call carried in the setup request of the second group call session is not saved. The priority of the session.
  • the data plane and the control plane of the adjacent group call communication are not separated.
  • the technical solution proposed by the embodiment of the present invention can be applied to a scenario where the data plane and the control plane are separated, and can also be applied to a scenario where the data plane and the control plane are not separated.
  • the so-called separation of the data plane and the control plane refers to the transmission of group call data through the data channel, and the control signaling such as group call session establishment/demolition of the neighbor group communication is transmitted through the control channel.
  • the so-called data plane and control plane are not separated, which means that the control signaling and group call data of the group call session are transmitted through one channel.
  • the establishment request of the second group call session is received through the intercept control channel.
  • establishing the second group call session specifically refers to receiving the group call data sent by the establishment request sending end of the second group call session on the data channel.
  • the method embodiment based on the receiver of the group call session preferably receives the channel reception other than the channel occupied by the first group call session.
  • the establishment request of the second group of call sessions specifically refers to receiving the group call data sent by the establishment request sending end of the second group call session on the channel that receives the establishment request of the second group call session.
  • establishing the second group of call sessions specifically refers to: performing media preemption on the control channel; after the media preemption succeeds, Sending a setup request of the second group of call sessions on the control channel, and sending the group call data on the data channel, where the second group call session setup request carries the priority of the second group call session; After the establishment request of the second group of call sessions, a control channel release notification is sent on the control channel.
  • the present invention exemplifies one of the preferred implementation manners: sending a media preemption request on the control channel; sending the last media preemption request to start, at a predetermined time The internal control channel is intercepted; if the media preemption request sent by another terminal is not monitored on the control channel within the predetermined time, the media preemption is determined to be successful.
  • the number of media preemption requests sent does not exceed the value range of the media preemption request corresponding to the second group of call sessions.
  • the lower limit value of the media preemption request quantity range corresponding to the second group call session is greater than the upper limit value of the media preemption request quantity range corresponding to the group call session whose priority is lower, and the second group call session corresponds to the upper limit value.
  • the upper limit value of the media preemption request quantity range is less than the lower limit value of the media preemption request quantity range corresponding to the group call session whose priority is lower;
  • the predetermined time is an integer multiple of the delay required to transmit a media preemption request.
  • the initiator of the second group call session may also send a media preemption request on the control channel; after the last media preemption request is sent, the interception control is performed within a predetermined time. Channel; if the media preemption request sent by another terminal is not monitored on the control channel within the predetermined time, the second group call session stop notification is sent on the control channel.
  • establishing the second group of call sessions specifically refers to: Selecting one channel for each medium to perform media preemption; after the media preemption succeeds, the second group call session establishment request is sent on the selected channel, and the second group call session establishment request carries the second group call session Priority; after the setup request of the second group call session is sent, the group call data is sent on the selected channel.
  • the following is one of the following: sending media preemption request; after sending the last media preemption request, listening to the channel occupied by the first group of call sessions within a predetermined backoff time
  • the media preemption is determined to be successful if the media preemption request sent by the terminal in any of the neighboring communication groups is not received on each channel except the channel occupied by the first group of call sessions in the backoff time.
  • the initiator of the second group call session may also perform media preemption by referring to the media preemption mode when the data plane and the control plane are separated.
  • the second group of call session initiators are also received from the second group of call session initiators.
  • a request is established, and the second group call session establishment request carries the priority of the second group call session.
  • the priority of the second group of call sessions carried in the setup request of the second group of call sessions is also saved.
  • the priority of the second group of call sessions may be saved before the priority is compared, or the priority of the second group of call sessions may be saved after the priority is compared.
  • the priority of the second group call session carried in the second group call establishment request may be saved when the priority of the second group call session is higher than the priority of the first group call session. If the priority of the second group of call sessions is lower than the priority of the first group of call sessions, the priority of the second group of call sessions carried in the setup request of the second group of call sessions is not saved.
  • establishing the second group call session specifically refers to: forwarding the establishment request of the second group call session to the terminal in the neighboring communication group; and receiving the establishment request of the second group call session
  • the group call data sent by the sender ie, the initiator of the second group call session
  • FIG. 2 is a schematic diagram of a neighboring group communication method in a neighboring group communication scenario in which the data plane and the control plane are separated in the Ad Hoc mode.
  • the dotted line with an arrow indicates that the information is transmitted by broadcast or multicast.
  • the group call data of the currently ongoing group call session ie, the first group of call sessions
  • Step 200 After determining that the control channel is idle, terminal A (ie, the initiator of the second group of call sessions) preempts the control channel through the medium preemption mechanism of layer 3.
  • the medium preemption mechanism of layer 3 can be used to solve this problem.
  • a terminal that needs to send a group call session establishment request on the control plane specifically:
  • the terminal sends a thousand media preemption requests on the control channel, and the media preemption request may be, but is not limited to, a su frame;
  • the terminal listens to the control channel within a predetermined time, which is an integer multiple of the delay required for the terminal to transmit a media preemption request;
  • the preemption control channel is successful.
  • the group call session establishment request is not initiated on the control channel.
  • the number of media preemption requests sent by the terminal does not exceed the value range of the media preemption request corresponding to the group call session that needs to be initiated.
  • the lower limit value of the media preemption request corresponding to the group call session is greater than the media preemption request corresponding to the group call session whose priority is lower.
  • the upper limit of the range of the value of the media preemption request corresponding to the group call session is less than the lower limit of the value range of the media preemption request corresponding to the group call session whose priority is lower.
  • the above predetermined time can be determined by the following formula: ( mcw - f ) * 7>.
  • the mcw in the formula is the maximum number of media preemption requests that the terminal is allowed to send, that is, the upper limit of the value range of the media preemption request corresponding to the group call session initiated by the terminal; Rx in the formula is the medium actually sent by the terminal. Preempt the number of requests; 7 in the formula is the delay required to transmit a media preemption request.
  • the predetermined time may also be configured as a fixed integer multiple of Tx.
  • FIG. 5 A rectangular block in Figure 5 represents a data frame in a proximity group communication.
  • Terminal A sends three media preemption requests on the control channel
  • terminal C sends two media preemption requests on the control channel.
  • Terminal A and terminal C simultaneously start transmitting media preemption requests on the control channel, and each media preemption request is sent through a data frame in a neighboring group communication.
  • the terminal C After the terminal C sends the two media preemption requests, it starts to listen to the control channel, and after listening to the media preemption request sent by the terminal A, the terminal C discards the media preemption.
  • the terminal A After receiving the three media preemption requests, the terminal A starts to listen to the control channel, and does not monitor the media preemption request in the agreed five data frames, and the media preemption is considered successful.
  • the terminal A compares the priority of the first group call session with the priority of the second group call session, only when the priority of the second group call session is higher than the priority of the first group call session. Step 200 is performed.
  • Step 210 After the preemption succeeds, the terminal A sends a setup request of the second group call session on the control channel, and sends the group call data on the data channel.
  • the request for establishing the second group of call sessions carries the priority of the second group of call sessions.
  • the group call data may be sent on the data channel after receiving the setup request response returned by the at least one terminal.
  • terminal A can send a request for establishing a second group of call sessions through one data frame.
  • Step 220 After sending the setup request of the second group call session, the terminal A sends a thousand control channel release notifications on the control channel.
  • terminal A sends two control channel release notifications through two data frames.
  • the terminal with the highest priority among each adjacent communication group may send a media preemption request after receiving the control channel release notification.
  • Step 230 The terminal B (the terminal that receives the request for establishing the second group call session, may be the initiator of the first group call session, or the receiver of the first group call session) receives the second on the control channel. After the establishment of the group call session, the priority of the first group of call sessions and the priority of the second group of call sessions are compared. If the priority of the second group of call sessions is greater than the priority of the first group of call sessions, step 240 is performed. Otherwise, the establishment request of the second group of call sessions is ignored.
  • the terminal B also monitors the control channel while transmitting the group call data of the first group of call sessions on the data channel.
  • step 230 may be omitted.
  • Step 240 The terminal B receives the group call data of the second group of call sessions on the data channel.
  • the terminal B also reserves the priority of the second group of call sessions.
  • terminal B may send a setup request response to terminal A after the preemption control channel succeeds.
  • Step 250 After the group call data of the second group of call sessions is sent, the terminal A preempts the control channel by using the media preemption mechanism of the layer 3, and after the preemption succeeds, sends a second group call session stop notification on the control channel.
  • FIG. 3 is a schematic diagram of a neighboring group communication method in a neighboring group communication scenario in which the data plane and the control plane are not separated in the Ad Hoc mode. Among them, the dotted line with an arrow indicates that the information is transmitted by broadcast or multicast.
  • Step 300 Terminal A (ie, the initiator of the second group of call sessions) preempts the idle channel by using a medium preemption mechanism based on layer 3 of the random backoff.
  • the terminal selects one channel to send a media preemption request from each of the idle channels except the channel occupied by the first group of call sessions; after transmitting the last media preemption request, monitors the channel occupied by the first group of call sessions within a predetermined backoff time If the channel does not receive the media preemption request sent by the terminal in any of the neighboring communication groups on the channels other than the channel occupied by the first group of call sessions, the channel preemption is considered successful; If the media preemption request sent by the other terminals in any of the neighboring communication groups is received on at least one channel other than the channel occupied by the first group of call sessions in the backoff time, the channel preemption failure is considered, and the channel preemption is discarded.
  • the terminal A compares the priority of the first group call session with the priority of the second group call session, only when the priority of the second group call session is higher than the priority of the first group call session. Step 300 is performed.
  • Step 310 After the preemption succeeds, the terminal A sends a request for establishing the second group call session on the selected channel.
  • the request for establishing the second group of call sessions carries the priority of the second group of call sessions.
  • Step 320 After sending the setup request of the second group call session, the terminal A sends the group call data of the second group call session on the selected channel.
  • the group call data is sent on the selected channel after receiving the setup request response returned by the at least one terminal.
  • Step 330 The terminal B (the terminal that receives the request for establishing the second group call session may be the initiator of the first group call session or the receiver of the first group call session) receives on the channel selected by the terminal group A. After the request for establishing the second group of call sessions, comparing the priority of the first group of call sessions with the priority of the second group of call sessions, if the priority of the second group of call sessions is greater than the priority of the first group of call sessions, Step 340 is performed, otherwise, the establishment request of the second group call session is ignored.
  • the terminal B listens to other channels while transmitting the group call data of the first group of call sessions on the channel occupied by the first group of call sessions.
  • step 330 may be omitted.
  • Step 340 The terminal B receives the group call data of the second group call session on the channel that receives the establishment request of the second group call session.
  • the terminal B also reserves the priority of the second group of call sessions.
  • the terminal B may send a setup request response to the terminal A on the channel that receives the establishment request of the second group call session.
  • Figure 4 shows a schematic diagram of a neighboring group communication method in a neighboring group communication scenario in the Group Owner mode.
  • the dotted line with an arrow indicates that the information is transmitted by broadcast or multicast.
  • Step 400 Terminal A (ie, the initiator of the second group of call sessions) sends a request for establishing a second group call session to the GO of the neighboring communication group to which it belongs.
  • the request for establishing the second group of call sessions carries the priority of the second group of call sessions.
  • the terminal A compares the priority of the first group call session with the priority of the second group call session, only when the priority of the second group call session is higher than the priority of the first group call session. Step 400 is performed.
  • Step 410 After sending the setup request of the second group call session, the terminal A sends the group call data of the second group call session to the GO.
  • the group call data can be sent to the GO after receiving the setup request response returned by the GO.
  • Step 420 After receiving the setup request of the second group call session, the GO compares the priority of the first group call session with the priority of the second group call session, if the priority of the second group call session is greater than the first group call session. If the priority is reached, step 430 is performed, otherwise, the establishment request of the second group of call sessions is ignored.
  • Step 430 The GO receives the group call data of the second group call session sent by the terminal A, and broadcasts the group call data of the second group call session in the neighboring communication group.
  • the GO can also forward the group call data of the second group of call sessions to the terminals in the neighboring communication group through the unicast mode.
  • the GO may further indicate that the sender of the first group call session ends the first group of call sessions.
  • the GO may also return a setup request response to the terminal A.
  • the GO forwards the setup request of the second group call session of the terminal A in the neighboring communication group, and then broadcasts the group call data of the second group call session in the neighboring communication group. If the GO receives the setup request of the group call session sent by multiple terminals during the process of the first group call session, the GO performs the priority of the group call session received and the priority of the first group call session respectively. At the same time of comparison, the priority of each group call session received is compared, so that the group call session with the highest priority is selected for establishment. In this case, the GO needs to send a setup request response to the initiator of the selected group call session, and the terminal A needs to send the group call data of the second group call session after receiving the setup request response.
  • the terminal B (the terminal receiving the setup request of the second group call session may be the initiator of the first group call session, or may be After receiving the setup request of the second group call session, the receiver of the first group of call sessions compares the priority of the first group call session with the priority of the second group call session, if the priority of the second group call session If the priority of the first group of call sessions is greater than the group call data of the second group call session, the group call data of the second group call session is received. Otherwise, the establishment request of the second group call session is ignored.
  • the terminal B also reserves the priority of the second group of call sessions.
  • the terminal B receives the establishment request of the second group call session, or determines that the priority of the second group call session is greater than the priority of the first group call session.
  • the terminal B After receiving the first group call session interruption indication, the group call data of the first group call session is stopped, and the first group call session interruption response may also be returned.
  • the terminal B receives the group call data of the second group call session.
  • the terminal B is the initiator of the first group call session, optionally, the terminal B stops sending the group after receiving the group call data of the second group call session or receiving the first group call session interruption instruction.
  • a group calls the group call data, and can also return the first group call session interrupt response.
  • the initiator of the first group of call sessions does not send the first group call session through the data channel after comparing that the priority of the second group call session is higher than the priority of the first group call session.
  • Group call data Since the current neighbor group call communication supports only one group call session, multiple group call sessions are not supported in parallel. Therefore, in the embodiment of the present invention, the initiator of the first group of call sessions does not send the first group call session through the data channel after comparing that the priority of the second group call session is higher than the priority of the first group call session. Group call data.
  • the embodiment of the present invention does not exclude an implementation scenario that supports coexistence of multiple group call sessions.
  • the implementation manner provided by the embodiment of the present invention can also be used.
  • the embodiment of the present invention further provides a terminal for performing proximity group communication, and the structure thereof is as shown in FIG.
  • the application scenario of the terminal is: when the terminal performs the first group call session of the neighbor group communication, if the second group call session of the neighbor group communication needs to be established.
  • a priority comparison module 601 configured to compare a priority of the first group of call sessions with a priority of the second group of call sessions to be established;
  • the group call session establishing module 602 is configured to: when the comparison result of the priority comparison module is the priority of the second group call session When the priority of the first group of call sessions is higher, a second group of call sessions is established.
  • the priority of the first group of call sessions is: a priority of the terminal that initiates the first group of call sessions, or a priority of the user of the terminal that initiates the first group of call sessions, or a terminal that initiates the first group of call sessions.
  • the priority of the neighboring communication group, or the priority of the terminal that initiated the first group of call sessions, the priority of the user who initiated the first group of call sessions, and/or the proximity communication of the terminal that initiated the first group of call sessions The priority determined by the priority of the group;
  • the priority of the second group of call sessions is: the priority of the terminal that initiates the second group of call sessions, or the priority of the user who initiates the second group of call sessions, or the neighboring communication group where the terminal that initiates the second group of call sessions is located.
  • Priority of the terminal, or the priority of the terminal that initiated the second group of call sessions, the priority of the user who initiated the second group of call sessions, and/or the priority of the neighboring communication group where the terminal that initiated the second group of call sessions is located And determine the priority.
  • the group call session establishment request receiving module is configured to receive the establishment request of the second group call session, and the second group call session establishment request The priority of the second group of call sessions is carried.
  • the priority storage module is configured to save the priority of the second group of call sessions carried in the setup request of the second group of call sessions.
  • the group call session establishment request receiving module is configured to receive the establishment of the second group call session by monitoring the control channel.
  • the group call session establishing module is configured to receive the group call data sent by the establishment request sending end of the second group call session on the data channel.
  • the group call session establishment request receiving module is configured to listen to the channel occupied by the first group call session.
  • the external channel receives the establishment request of the second group call session;
  • the group call session establishment module is configured to receive the group call sent by the establishment requesting end of the second group call session on the channel that receives the establishment request of the second group call session data.
  • the group call session establishing module is configured to: forward a setup request of the second group call session to the terminal in the neighboring communication group; and send the group call sent by the sending end of the second group call session establishment request Data, and forwarded to terminals in adjacent communication groups.
  • the group call session establishing module is configured to: perform media preemption on the control channel; after the media preemption succeeds, Sending a setup request of the second group call session on the control channel, and sending the group call data on the data channel, the second group call session establishment request carrying the priority of the second group call session; after sending the second group call After the session establishment request, a control channel release notification is sent on the control channel.
  • the group call session establishing module is used to:
  • the medium preemption request is sent on the control channel, and the number of media preemption requests sent does not exceed the value range of the media preemption request corresponding to the second group of call sessions;
  • the lower limit value of the media preemption request quantity range corresponding to the second group call session is greater than the upper limit value of the media preemption request quantity range corresponding to the group call session whose priority is lower, and the second group call session corresponds to the upper limit value.
  • the upper limit value of the media preemption request quantity range is less than the lower limit value of the media preemption request quantity range corresponding to the group call session whose priority is lower;
  • control channel is monitored for a predetermined time, which is an integer multiple of the delay required to transmit a media preemption request;
  • the media preemption request sent by other terminals is not monitored on the control channel within the predetermined time, the media preemption is determined to be successful.
  • group call session establishing module can also be used to:
  • control channel is monitored within a predetermined time
  • the second group call session stop notification is sent on the control channel.
  • the group call session establishing module is used to:
  • the second group call session establishment request is sent on the selected channel, and the second group call session is established.
  • the request carries the priority of the second group of call sessions; after the setup request of the second group of call sessions is sent, the group call data is sent on the selected channel.
  • the group call session establishing module is configured to:
  • the media preemption request of any neighboring communication group is not received on each channel except the channel occupied by the first group of call sessions in the backoff time, the media preemption is determined to be successful.
  • the terminal at least includes: a memory 701, a processor 702, and an antenna 703.
  • the priority of the group call session is stored in the memory 701.
  • the processor 702 When performing the first group call session of the proximity group communication, if the second group call session of the neighbor group communication needs to be established, the processor 702 sets the priority of the first group call session saved in the memory 701 with the second to be established. Group call session priority The level is compared, and when the priority of the second group call session is higher than the priority of the first group call session, the second group call session is established through the antenna 703.
  • the processor 702 also receives the establishment request of the second group call session through the antenna 703, and the second carried in the second group call session establishment request.
  • the priority of the group call session is saved in the memory 701.
  • the processor 702 Based on the receiver embodiment of the second group of call sessions, if the data plane and the control plane of the neighbor group communication are separated, preferably, the processor 702 also listens to the control channel through the antenna 703 to receive the establishment request of the second group call session, and The group call data sent by the establishment request requesting end of the second group call session is received on the data channel by the antenna 703.
  • the processor 702 receives the channel outside the channel occupied by the first group call session through the antenna 703 to receive A request for establishing a second group of call sessions, and receiving, by the antenna 703, the group call data sent by the establishment request sending end of the second group call session on the channel that receives the establishment request of the second group call session.
  • the processor 702 forwards the establishment request of the second group call session to the terminal in the adjacent communication group through the antenna 703; and sends the message sent by the sender that receives the establishment request of the second group call session through the antenna 703.
  • the group calls data and forwards it to the terminal in the adjacent communication group through the antenna 703.
  • the processor 702 sends a media preemption request on the control channel through the antenna 703, and the sent media preemption request is sent.
  • the number of media preemption requests corresponding to the second group of call sessions is not exceeded;
  • the lower limit value of the media preemption request quantity range corresponding to the second group call session is greater than the upper limit value of the media preemption request quantity range corresponding to the group call session whose priority is lower, and the second group call session corresponds to the upper limit value.
  • the upper limit value of the media preemption request quantity range is less than the lower limit value of the media preemption request quantity range corresponding to the group call session whose priority is lower;
  • the processor 702 listens to the control channel through the antenna 703 for a predetermined time, which is an integer multiple of the delay required to transmit a media preemption request;
  • the processor 702 sends a second group call session establishment request on the control channel through the antenna 703, and sends the group call on the data channel through the antenna 703.
  • the second group call session establishment request carries the priority of the second group call session
  • the processor 702 After transmitting the setup request for the second group of call sessions, the processor 702 transmits a control channel release notification on the control channel via the antenna 703.
  • the processor 702 sends a media preemption request on the control channel through the antenna 703; after the last media preemption request is sent, the control channel is monitored by the antenna 703 within a predetermined time; if the predetermined time is not A media preemption request sent by another terminal is monitored on the control channel, and a second group call session stop notification is sent on the control channel through the antenna 703.
  • the processor 702 idles from the channel occupied by the first group call session through the antenna 703. Selecting a channel to send a media preemption request in the channel; after transmitting the last media preemption request, listening to each channel outside the channel occupied by the first group of call sessions through the antenna 703 within a predetermined backoff time; if the backoff time is in the first group.
  • the media preemption request of any neighboring communication group is not received on each channel except the channel occupied by the session, and the establishment request of the second group call session is sent on the selected channel by the antenna 703, and the establishment of the second group of call sessions is established.
  • the request carries the priority of the second group of call sessions; after the setup request of the second group of call sessions is sent, the group call data is sent by the antenna 703 on the selected channel.
  • the embodiment of the present invention is particularly applicable to the field of public security.
  • the terminal in the embodiment of the present invention is a public security terminal.
  • the technical solution provided by the embodiment of the present invention can also be implemented in the communication in the non-public security field.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware.
  • the present invention is in the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) in which computer usable program code is embodied.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

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

Abstract

L'invention concerne un procédé de communication de groupes d'adjacence et un terminal. Lorsqu'une première session d'appel de groupe d'une communication de groupe de proximité est réalisée, s'il est nécessaire d'établir une deuxième session d'appel de groupe de la communication de groupe de proximité, le procédé comprend les étapes suivantes : comparer la priorité d'une première session d'appel de groupe à celle d'une deuxième session d'appel de groupe devant être établie; et lorsque la priorité de la deuxième session d'appel de groupe est supérieure à celle de la première session d'appel de groupe, établir la deuxième session d'appel de groupe. Dans la solution technique décrite dans les modes de réalisation selon la présente invention, dans le processus d'une session d'appel de groupe courante (à savoir, une première session d'appel de groupe), s'il faut établir une nouvelle session d'appel de groupe (à savoir, une deuxième session d'appel de groupe), il est possible de juger si la nouvelle session d'appel de groupe est établie ou non en comparant les priorités des deux sessions d'appel de groupe. Spécifiquement, si la priorité de la nouvelle session d'appel de groupe est supérieure à celle de la session d'appel de groupe courante, la nouvelle session d'appel de groupe est établie, réalisant ainsi qu'un terminal devant initier la nouvelle session d'appel de groupe préempte le droit à la parole.
PCT/CN2014/077875 2013-05-20 2014-05-20 Procédé de communication de groupes d'adjacence et terminal WO2014187305A1 (fr)

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