WO2015109475A1 - Procédé de communication de jonction, station de base, équipement d'utilisateur et système - Google Patents

Procédé de communication de jonction, station de base, équipement d'utilisateur et système Download PDF

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Publication number
WO2015109475A1
WO2015109475A1 PCT/CN2014/071213 CN2014071213W WO2015109475A1 WO 2015109475 A1 WO2015109475 A1 WO 2015109475A1 CN 2014071213 W CN2014071213 W CN 2014071213W WO 2015109475 A1 WO2015109475 A1 WO 2015109475A1
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WIPO (PCT)
Prior art keywords
mbms
base station
user equipment
target
information
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/CN2014/071213
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English (en)
Chinese (zh)
Inventor
曾清海
黄曲芳
刘文济
孙启
钱晨光
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2014/071213 priority Critical patent/WO2015109475A1/fr
Priority to CN201480002671.XA priority patent/CN104956698A/zh
Publication of WO2015109475A1 publication Critical patent/WO2015109475A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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

Definitions

  • the present invention relates to the field of communications, and in particular, to a trunking communication method, a base station, a user equipment, and a system. Background technique
  • the cluster communication service refers to a cluster communication common network composed of a trunking communication system having technical characteristics such as channel sharing and dynamic allocation, and provides dedicated command and dispatch communication services for group users such as multiple departments and units.
  • trunking communication has a wide range of uses.
  • Multimedia Broadcast Multicast Service is a technology that simultaneously provides the same service content to multiple users at the same time.
  • MBMS uses broadcast or multicast to transmit resources, so as to realize resource sharing between the network (including the core network and the access network), and realize as many multimedia users as possible with the same requirements with as few resources as possible.
  • the MBMS Single Frequency Network (MBSFN) transmission mode requires all cells in a certain area to transmit the same data packet using the same modulation and coding mode at the same time and frequency.
  • the technical problem to be solved by the embodiments of the present invention is to provide a cluster communication method, a base station, a user equipment, and a system, which can solve the problem that the prior art cannot guarantee the trunking communication service in the area switching process. Renewal technical issues.
  • a base station including:
  • a receiving unit configured to receive the temporary mobile group identity TMGI information corresponding to the current multimedia broadcast multicast service MBMS of the target base station, and the MBMS interest indication sent by the user equipment, where the target base station is located in the target MBMS list a frequency network area, the MBMS interest indication includes TMGI information corresponding to an MBMS that is interested in the user equipment, and a processing unit, configured to: when the user equipment cannot receive the current MBMS of the base station, according to the MBMS The interest indication and the TMGI information corresponding to the current MBMS of the target base station are selected to be switched by the target base station capable of providing the MBMS of interest to the user equipment.
  • the receiving unit is further configured to receive a measurement report sent by the user equipment
  • the processing unit is specifically configured to, when determining, according to the measurement, that the user equipment cannot receive the current MBMS of the base station, according to the MBMS interest indication, and the TMGI corresponding to the current MBMS of the target base station. Information, selecting a target base station capable of providing an MBMS of interest to the user equipment for handover.
  • the measurement report includes the MBMS interest indication
  • the processing unit is configured to select, according to the measurement report, that the user equipment cannot receive the current MBMS of the base station, according to the MBMS interest indication and the TMGI information corresponding to the current MBMS of the target base station,
  • the target base station capable of providing the MBMS of interest to the user equipment performs handover.
  • the measurement includes:
  • the user equipment receives the measurement information of whether the MBMS quality of the base station is lower than a configuration threshold; when the user equipment receives the MBMS quality of the base station is lower than a configuration threshold, it may be determined that the user equipment cannot receive the The current MBMS of the base station.
  • the processing unit is specifically configured to: according to the MBMS interest indication of the user equipment received by the receiving unit, determine, by using a handover decision, that the user equipment cannot receive When the current MBMS of the base station is based on the MBMS
  • the interest indication and the TMGI information corresponding to the current MBMS of the target base station are selected to be switched by the target base station capable of providing the MBMS of interest to the user equipment.
  • the processing unit is specifically configured to: send a handover request to the selected target base station; the handover request carries a requirement indicating the target base station
  • the MCH information corresponding to the MBMS that is of interest to the user equipment is fed back; the handover command is sent to the user equipment; and the handover command carries the MCCH information corresponding to the MBMS that is interested in the user equipment.
  • the receiving unit is further configured to: receive an MBMS session request sent by an upper layer and a header compression protocol ROHC, in a sixth possible implementation manner.
  • the base station further includes:
  • a compression unit configured to perform a header compression protocol ROHC algorithm compression on the MBMS data header according to the ROHC algorithm parameter
  • the sending unit is further configured to send MBMS session information carrying the ROHC algorithm compression information to the user equipment by using the multicast control channel, so that the user equipment decompresses the MBMS data.
  • the MBMS is a cluster service.
  • a user equipment including:
  • a sending unit configured to send a multimedia broadcast multicast service MBMS interest indication to the source base station, where the MBMS interest indication includes temporary mobile group identifier TMGI information corresponding to the MBMS that is interested in the user equipment;
  • a receiving unit configured to receive a handover command sent by the source base station, where the handover command is that the source base station selects, according to the MBMS interest indication and the acquired TMGI information of the target base station, an MBMS that can provide the user equipment to be interested.
  • a handover command sent by the target base station where the handover command is generated by the target base station, and the user equipment provides the MBMS-related multicast control channel MCCH information of interest in the target MBMS single frequency network area;
  • a processing unit configured to receive, by the receiving unit, the cluster service in the target MBMS single frequency network area according to the MCCH information.
  • the processing unit is further configured to: when the user equipment cannot receive the current MBMS of the source base station, generate a measurement report; and send the report to the sending unit The source base station; or
  • the user equipment When the user equipment is unable to receive the current MBMS of the source base station, generate a measurement report and send the measurement report to the source base station by using the sending unit, where the measurement report includes an MBMS interest indication reported to the source base station;
  • the indication includes TMGI information corresponding to the MBMS used to identify the user equipment.
  • the measurement report includes at least one of the following information:
  • Target cell identifier of the MBMS single frequency network area
  • Target channel quality information of the MBMS single frequency network area
  • Target MBMS reception quality information of the MBMS single frequency network area
  • the MBMS is a cluster service.
  • a base station including:
  • a receiving unit configured to receive temporary mobile group identity TMGI information corresponding to a current multimedia broadcast multicast service MBMS of the target base station, where the target base station is located in a target MBMS single frequency network area;
  • the sending unit is further configured to notify the user equipment located in the source MBMS single frequency network area by broadcasting the received TMGI information corresponding to the current MBMS of the target base station.
  • the sending unit is further configured to When the MBMS information of the base station itself changes, the MCCH change indication information is notified to the target base station;
  • the receiving unit is further configured to: receive MCCH change indication information notified when the MBMS information of the target base station changes;
  • the sending unit is further configured to: broadcast the received MCCH change indication information of the target base station to the user equipment in the MBMS single frequency network area.
  • the receiving unit is further configured to: receive an MBMS session request sent by an upper layer and a header compression protocol ROHC algorithm parameter ;
  • the base station further includes:
  • a compression unit configured to perform a header compression protocol ROHC algorithm compression on the MBMS data header according to the ROHC algorithm parameter
  • the sending unit is further configured to send MBMS session information carrying the ROHC algorithm compression information to the user equipment by using the multicast control channel, so that the user equipment decompresses the MBMS data.
  • the MBMS is a cluster service.
  • a user equipment including:
  • a receiving unit configured to receive a broadcast notification of the source base station, where the broadcast notification includes the temporary mobile group identifier TMGI information corresponding to the current multimedia broadcast multicast service MBMS of the target base station acquired by the source base station, where the target base station is located in the target MBMS list Frequency network area;
  • the receiving unit is further configured to: when the user equipment is unable to receive the current MBMS of the source base station, obtain, according to the TMGI information corresponding to the current MBMS of the target base station, the user equipment that is interested in the target MBMS single frequency network area.
  • MBMS related multicast control channel MCCH information MBMS related multicast control channel MCCH information
  • a processing unit configured to select a target cell in the target MBMS single frequency network area to perform cell reselection
  • the receiving unit is further configured to: after the cell is reselected to the target MBMS single frequency network area, receive the cluster service according to the MCCH information.
  • the receiving unit is further configured to: receive, by the source base station, the MCCH change indication information that is notified by the source base station; the MCCH change indication information is used to indicate that the MBMS information of the target base station is changed. .
  • the receiving unit is specifically configured to:
  • the processing unit is specifically configured to:
  • the user equipment When the user equipment is unable to receive the current MBMS of the source base station, determine, according to the mapping relationship, whether the TMGI corresponding to the current MBMS of the target base station corresponds to the TMGI in the cluster group that is interested in the user equipment; And determining, by the receiving unit, the MBMS-related multicast control channel MCCH information that is interested in the user equipment in the target MBMS single-frequency network area, when the TMGI in the cluster group that is interested in the user equipment is determined;
  • the target cell in the target MBMS single frequency network area is selected for cell reselection.
  • the MBMS is a cluster service.
  • a cluster communication method including:
  • the source base station receives the temporary mobile group identifier TMGI information corresponding to the current multimedia broadcast multicast service MBMS of the target base station, and the target base station is located in the target MBMS single frequency network area i or
  • the source base station receives an MBMS interest indication sent by the user equipment, where the MBMS interest indication includes TMGI information corresponding to the MBMS that is interested in the user equipment;
  • the source base station selects an MBMS that can provide the user equipment to be interested according to the MBMS interest indication and the TMGI information corresponding to the current MBMS of the target base station.
  • the target base station performs handover.
  • the method further includes: Receiving a measurement report sent by the user equipment;
  • the selecting step specifically includes:
  • the selection can provide a sense of the user equipment.
  • the target base station of the MBMS of interest is switched.
  • the step that the source base station receives the MBMS interest indication sent by the user equipment includes:
  • the source base station receives the measurement report sent by the user equipment, where the measurement report includes an MBMS interest indication;
  • the selecting step specifically includes:
  • the selection can provide a sense of the user equipment.
  • the target base station of the MBMS of interest is switched.
  • the measurement includes:
  • the user equipment receives the measurement information of whether the MBMS quality of the source base station is lower than the configuration threshold; when the user equipment receives the MBMS quality of the source base station lower than the configuration threshold, it may be determined that the user equipment cannot receive the MBMS of the source base station. .
  • the selecting step specifically: the source base station determining, according to the handover decision, that the user equipment cannot receive the current MBMS of the source base station, according to the MBMS interest And indicating the TMGI information corresponding to the current MBMS of the target base station, and selecting a target base station that can provide the MBMS that is interested in the user equipment to perform handover.
  • the selecting according to the MBMS interest indication and the TMGI information corresponding to the current MBMS of the target base station, selecting a target base station that can provide an MBMS that is interested in the user equipment
  • the steps of performing the handover include:
  • the handover request carrying an MBMS-related multicast control channel that is interested in the user equipment indicating that the target base station needs feedback MCCH information;
  • the handover command carries MBMS information related to the MBMS that the user equipment is interested in.
  • the method further includes:
  • the MBMS session information carrying the ROHC algorithm compression information is sent to the user equipment through the multicast control channel, so that the user equipment decompresses the MBMS data.
  • the MBMS is a cluster service.
  • a cluster communication method including:
  • the user equipment sends a multimedia broadcast multicast service MBMS interest indication to the source base station, where the MBMS interest indication includes the temporary mobile group identifier TMGI information corresponding to the MBMS that is interested in the user equipment;
  • a handover command sent by the source base station where the handover command is that the source base station selects a target that can provide an MBMS that is interested in the user equipment according to the MBMS interest indication and the acquired TMGI information of the target base station.
  • a handover command sent by the base station where the handover command is generated by the target base station, and the user equipment provides the MBMS-related multicast control channel MCCH information of interest in the target MBMS single frequency network area;
  • the user equipment receives the cluster service in the target MBMS single frequency network area according to the MCCH information.
  • the method further includes: When the user equipment cannot receive the current MBMS of the source base station, generate a measurement report and send the measurement report to the source base station; or
  • the user equipment When the user equipment is unable to receive the current MBMS of the source base station, generate a measurement report and send the measurement report to the source base station, where the measurement report includes an MBMS interest indication reported to the source base station; the MBMS interest indication includes the user TMGI information corresponding to the MBMS that the device is interested in.
  • the measurement advertisement includes at least one of the following information:
  • Target cell identifier of the MBMS single frequency network area
  • Target channel quality information of the MBMS single frequency network area
  • Target MBMS reception quality information of the MBMS single frequency network area
  • the MBMS is a cluster service.
  • a cluster communication method including:
  • the source base station receives the temporary mobile group identifier TMGI information corresponding to the current multimedia broadcast multicast service MBMS of the target base station, and the target base station is located in the target MBMS single frequency network area i or
  • the source base station broadcasts the received TMGI information corresponding to the current MBMS of the target base station to the user equipment located in the source MBMS single frequency network area.
  • the method further includes: when the MBMS information of the source base station changes, notifying the target base station of MCCH change indication information; and receiving the target MCCH change indication information notified when the MBMS information of the base station changes;
  • the received MCCH change indication information of the target base station is broadcasted to the user equipment in the source MBMS single frequency network area.
  • the method further includes:
  • the MBMS session information carrying the ROHC algorithm compression information is sent to the user equipment through the multicast control channel, so that the user equipment decompresses the MBMS data.
  • the MBMS is a cluster service.
  • a cluster communication method including:
  • the user equipment receives the broadcast notification of the source base station, where the broadcast notification includes the temporary mobile group identifier TMGI information corresponding to the current multimedia broadcast multicast service MBMS of the target base station acquired by the source base station, where the target base station is located in the target MBMS single frequency network area. ;
  • the MBMS-related multicast control channel MCCH that is interested in the user equipment in the target MBMS single-frequency network area, when the user equipment is unable to receive the current MBMS of the source base station.
  • Information selecting a target cell in the target MBMS single frequency network area for cell reselection;
  • the user equipment After the cell is reselected to the target MBMS single frequency network area, the user equipment receives the cluster service according to the MCCH information.
  • the method further includes:
  • the user equipment receives the MCCH change indication information of the source base station broadcast notification; the MCCH change indication information is used to indicate that the MBMS information of the target base station is changed.
  • the method further includes:
  • the step of the channel MCCH information includes: when the user equipment cannot receive the current MBMS of the source base station, according to the mapping relationship, determining that the TMGI corresponding to the current MBMS of the target base station corresponds to the set of interest of the user equipment When the TMGI in the group is obtained, the user equipment of the target MBMS single frequency network area is interested.
  • MBMS related MCCH information includes: when the user equipment cannot receive the current MBMS of the source base station, according to the mapping relationship, determining that the TMGI corresponding to the current MBMS of the target base station corresponds to the set of interest of the user equipment When the TMGI in the group is obtained, the user equipment of the target MBMS single frequency network area is interested.
  • the MBMS is a cluster service.
  • the UE sends an MBMS interest indication to the network side, and the network side selects a target cell that can provide the MBMS that is interested in the user equipment to perform handover according to the MBMS interest indication, thereby greatly reducing handover between the UEs.
  • the delay solves the technical problem that the prior art cannot guarantee the continuity of the trunking communication service during the area handover, and the target obtained by the base station of the source MBSFN area and the base station of the target MBSFN area and the base station of the target MBSFN area are mutually transmitted.
  • the temporary mobility group of the MBSFN area identifies the TMGI information, and the UE obtains the MCCH content of the target neighboring area in advance to ensure the continuity of the MBMS when the service scene changes dynamically, and satisfies the requirement of the continuity of the monthly service; the invention also realizes the good cluster communication. Scalability, and greatly improve the efficiency of wireless resource use; and reduce the delay when user equipment accesses the cluster communication group.
  • FIG. 1 is a schematic structural diagram of a cluster communication method according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of another embodiment of a cluster communication method provided by the present invention.
  • FIG. 3 is a schematic structural diagram of another embodiment of a cluster communication method provided by the present invention.
  • FIG. 4 is a schematic structural diagram of another embodiment of a cluster communication method provided by the present invention.
  • FIG. 5 is a schematic structural diagram of another embodiment of a cluster communication method provided by the present invention.
  • FIG. 6 is a schematic structural diagram of another embodiment of a cluster communication method provided by the present invention.
  • FIG. 7 is a schematic structural diagram of another embodiment of a cluster communication method provided by the present invention.
  • FIG. 8 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure.
  • 10 is a schematic structural diagram of another embodiment of a base station provided by the present invention
  • 11 is a schematic structural diagram of another embodiment of a user equipment provided by the present invention
  • FIG. 12 is a schematic structural diagram of a trunking communication system according to an embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of another embodiment of a trunking communication system provided by the present invention. detailed description
  • a cluster communication method according to an embodiment of the present invention is described, which is described from a base station side of a source MBMS single frequency network area on a network side, and the method includes:
  • the source base station receives the temporary mobile group identity TMGI information corresponding to the current multimedia broadcast multicast service MBMS of the target base station that is sent by the target base station, where the target base station is located in the target MBMS single frequency network area.
  • the target base station is a base station in an MBMS single frequency network area adjacent to a base station (ie, a source base station) of a source MBMS single frequency network area; the source base station and the target base station mutually transmit (ie, exchange each other) corresponding to each current MBMS.
  • the temporary mobile group identifies the TMGI information, and specifically exchanges the TMGI list information of the MBMS, that is, the source base station sends the TMGI corresponding to the current MBMS to the target base station, and the source base station receives the TMGI corresponding to the current MBMS of the target base station sent by the target base station.
  • Step S102 The source base station receives an MBMS interest indication sent by the user equipment, where the MBMS interest indication includes TMGI information corresponding to the MBMS that is interested in the user equipment.
  • the MBMS interest indication may be used to notify a base station of a source MBMS single frequency network area, an MBMS that the current UE is receiving or wanting to receive, or an MBMS that is no longer received or no longer wants to receive; understandably, some The UE has the ability to receive MBMS, and some UEs do not.
  • the TMGI can be used to identify the ID of the MBMS, that is, the identifier used in the MBMS to uniquely identify the multicast and broadcast bearer services;
  • step S102 and step S100 can be performed simultaneously, or step S100 is performed first, or step S102 is performed first.
  • Step S104 When the user equipment cannot receive the current MBMS of the source base station, the The source base station selects a target base station that can provide the MBMS that is interested in the user equipment to perform handover according to the MBMS interest indication and the TMGI information corresponding to the current MBMS of the target base station.
  • the user equipment in the embodiment of the present invention cannot receive the current MBMS of the source base station.
  • the user equipment has difficulty in receiving the current MBMS of the source base station, that is, the user equipment may be interfered with, or move to the source MBMS single frequency network.
  • the edge of the area, etc. makes it difficult to receive MBMS.
  • the source base station may select the target base station corresponding to the MBMS that is of interest to the UE to perform handover according to the temporary mobility group identifier TMGI information of the target MBMS single frequency network area stored by itself.
  • the source base station may determine that the user equipment cannot receive the MBMS by using the handover decision HO Command, and then perform step S104.
  • the MBMS interest indication reported by the user equipment received by the source base station may imply the user.
  • the device receives the current MBMS of the source base station, and needs to perform the handover.
  • the source base station can determine, by using the HO command, that the user equipment cannot receive the current MBMS of the source base station, and step S104 is performed.
  • the base station of the source MBMS single-frequency network area may determine, according to the measurement report uploaded by the user equipment, whether the user equipment cannot receive the current MBMS of the source base station, and specifically, another embodiment of the cluster communication method provided by the present invention as shown in FIG. , including:
  • Step S200 The source base station receives information corresponding to the current MBMS of the target base station that is sent by the target base station.
  • Step S202 The source base station receives an MBMS interest indication sent by the user equipment, where the MBMS interest indication includes TMGI information corresponding to the MBMS that is interested in the user equipment.
  • step S200 and step S202 may refer to step S100 and step S102 in the embodiment of FIG. 1, and details are not described herein again.
  • Step S204 The source base station receives the measurement report sent by the user equipment.
  • the measurement report includes: the user equipment receives the measurement information of whether the MBMS quality of the source base station is lower than a configuration threshold; when the user equipment receives the MBMS quality of the source base station is lower than a configuration threshold, the user may be determined.
  • the device cannot receive the MBMS of the source base station.
  • Step S206 When it is determined that the user equipment cannot receive the MBMS of the source base station according to the measurement report, select, according to the MBMS interest indication and the TMGI information corresponding to the current MBMS of the target base station, that the user equipment is interested.
  • the target base station of the MBMS performs handover. Specifically, reference may be made to step S104, and details are not described herein again.
  • the step S202 is not performed, and the step S204 is directly performed.
  • the received measurement report carries the MBMS interest indication of the multimedia broadcast multicast service reported by the user equipment, where the MBMS interest indication includes Temporary Mobile Group Identity TMGI for identifying MBMS.
  • step S104 in the embodiment of FIG. 1 and step S206 in the embodiment of FIG. 2 may be specifically: when it is determined that the user equipment cannot receive the MBMS of the source base station, the transmission to the selected target base station is switched.
  • the handover request carries an MBMS-related Multicast Control Channel (MCCH) information indicating that the user equipment is in need of feedback, and sends a handover command to the user equipment;
  • the handover command carries MBMS related MCCH information that is of interest to the user equipment.
  • MCCH Multicast Control Channel
  • the MCCH information in the various embodiments of the present invention may be all information or partial information of the MCCH information.
  • the embodiment in FIG. 1 to FIG. 2 is correspondingly described from the UE side, and specifically includes:
  • Step S300 The user equipment sends a multimedia broadcast multicast service MBMS interest indication to the source base station, where the MBMS interest indication includes the temporary mobile group identifier TMGI information corresponding to the MBMS that is interested in the user equipment.
  • Step S302 The user equipment receives a handover command sent by the source base station, where the handover command is that the source base station selects, according to the MBMS interest indication and the acquired TMGI information of the target base station, that the user equipment is interested.
  • Step S304 The user equipment receives the cluster service in the target MBMS single frequency network area according to the MCCH information.
  • the measurement report when the user equipment cannot receive the MBMS of the source base station, the measurement report may be generated and sent to the source base station; or when the user equipment cannot receive the MBMS of the source base station, And generating a measurement report and transmitting the same to the source base station,
  • the measurement report carries the MBMS interest indication of the multimedia broadcast multicast service reported to the source base station;
  • the MBMS interest indication includes a temporary mobile group identifier TMGI corresponding to the MBMS that is interested in the user equipment.
  • the measurement report in the embodiment of the present invention includes at least one of the following information: a cell identifier of a target MBMS single frequency network area, channel quality information of a target MBMS single frequency network area, or an MBMS reception quality of a target MBMS single frequency network area.
  • the cell identifier of the target MBMS single frequency network region ie, the neighboring cell
  • the channel quality of the neighboring cell may be the reference signal receiving power (RSRP) and/or the reference signal receiving quality. (ReferenceSignalReceivingQuality, RSRQ) and so on.
  • FIG. 4 Another embodiment of the cluster communication method provided by the present invention as shown in FIG. 4 further describes an embodiment of the present invention from a base station and a UE side of a source MBMS single frequency network area on the network side, the method including :
  • Step S400 The source base station and the target base station mutually send temporary mobile group identity TMGI information corresponding to each current MBMS.
  • Step S402 The UE reports the MBMS interest indication of the multimedia broadcast multicast service to the source base station; the MBMS interest indication includes a temporary mobile group identifier TMGI for identifying the MBMS that the UE is interested in;
  • TMGI temporary mobile group identifier
  • Step S404 The source base station receives the MBMS interest indication of the multimedia broadcast multicast service reported by the user equipment.
  • Step S406 When the user equipment cannot receive the MBMS of the source base station, the user equipment generates a measurement report and sends the measurement report to the source base station.
  • the embodiment of the present invention may not perform step S402, and in step S406, when the UE cannot receive the MBMS of the source base station, generate a measurement report and send the measurement report to the source base station, and report the multimedia broadcast group to the source base station. Broadcast service MBMS interest indication.
  • Step S408 The source base station receives the measurement report sent by the user equipment, and when determining, according to the measurement report, that the user equipment cannot receive the MBMS of the source base station, according to the MBMS interest indication and the obtained target MBMS single frequency network area.
  • the temporary mobile group identifies TMGI information, and selects a target MBMS single frequency network area that can provide MBMS of interest to the user equipment;
  • Step S410 The source base station sends the selected target base station in the target MBMS single frequency network area. Switching request;
  • the handover request carries an MBMS-related multicast control channel MCCH information that is interested in the user equipment that needs to be fed back by the target base station in the target MBMS single-frequency network area;
  • Step S412 The target base station sends a handover command to the source base station.
  • the handover command carries MBMS information related to MBMS of interest to the user equipment.
  • Step S414 The source base station sends the handover command to the UE.
  • Step S416 The UE receives the cluster service sent by the trunking communication application server in the target MBMS single frequency network area according to the multicast control channel MCCH information.
  • the MBMS in the embodiments of the present invention may be a cluster service.
  • the foregoing embodiment of the present invention greatly reduces the handover delay of the UE from the source MBMS single frequency network area to the target MBMS single frequency network area, and ensures The continuity of the trunking communication service.
  • FIG. 5 another embodiment of the cluster communication method provided by the present invention is described from the side of a base station (ie, a source base station) of a source MBMS single frequency network area on the network side, and the method includes:
  • Step S500 The source base station receives the temporary mobile group identifier TMGI information corresponding to the current multimedia broadcast multicast service MBMS of the target base station, and the target base station is located in the target MBMS single frequency network area.
  • Step S502 The source base station broadcasts the received TMGI information corresponding to the current MBMS of the target base station to the user equipment located in the source MBMS single frequency network area.
  • the broadcast notification may include a service area identifier (SIB15) of the cluster service, a TMGI list information, and a notification of the MCCH change.
  • SIB15 service area identifier
  • TMGI list information a notification of the MCCH change.
  • the embodiment of the present invention may further include: when the MBMS information of the source base station changes, notifying the MCCH change indication information of the local end of the target MBMS single-frequency network area (ie, the target base station); and receiving the MBMS information of the target base station.
  • the change of the MCCH service information may be caused by the change of the MBMS. It is also possible that although the MBMS has not changed, the base station decides to change the transmission position or modulation and coding mode of the MBMS data.
  • the embodiment in FIG. 5 of the present invention is correspondingly described from the UE side, and specifically includes:
  • Step S500 The user equipment receives the broadcast notification of the source base station, where the broadcast notification includes the temporary mobile group identifier TMGI information corresponding to the current multimedia broadcast multicast service MBMS of the target base station acquired by the source base station, where the target base station is located in the target MBMS list. Frequency network area.
  • the source base station may broadcast the TMGI of the target MBMS single-frequency network area that is obtained by being transmitted between the target base station and the TMGI of the target MBMS single-frequency network area that is obtained by other means.
  • the method includes: receiving, by the user equipment, MCCH change indication information of a broadcast notification of the source base station; the MCCH change indication information is used to indicate that the MBMS information of the target MBMS single frequency network area is changed.
  • Step S502 When the user equipment cannot receive the current MBMS of the source base station, obtain MBMS-related multicast that is interested in the user equipment in the target MBMS single-frequency network area according to the TMGI information corresponding to the current MBMS of the target base station. Control channel MCCH information, select a target cell in the target MBMS single frequency network area for cell reselection.
  • the target base station is located in the target cell; if the target base station can provide the MBMS that the user equipment is interested in, the user equipment selects the target cell where the target base station is located to perform cell reselection.
  • Step S504 After the cell is reselected to the target MBMS single frequency network area, the user equipment receives the cluster service according to the MCCH information.
  • FIG. 6 Another embodiment of the trunking communication method provided by the present invention, as shown in FIG. 6, further describes an embodiment of the present invention from a source base station and a UE side of the network side, and the method includes:
  • Step S600 The source base station and the target base station mutually send temporary mobile group identity TMGI information corresponding to each current MBMS.
  • the source base station may notify the neighboring cell by using the MCCH notification, that is, the mutually transmitted message includes but is not limited to the TMGI list information and/or the MCCH change indication information;
  • Step S602 The source base station broadcasts the temporary mobile group identifier TMGI information corresponding to the current MBMS in the target MBMS single frequency network area to the user equipment in the source MBMS single frequency network area.
  • Step S604 When the user equipment is in an idle state Receiving, by the source base station, a broadcast notification of the received TMGI information corresponding to the current MBMS of the target MBMS single frequency network area;
  • Step S606 When the user equipment in the idle state cannot receive the MBMS of the source base station, the user equipment acquires the target cell that can provide the MBMS that is interested in the user equipment according to the TMGI information corresponding to the current MBMS in the target MBMS single frequency network area. Multicast control channel content, selecting the target cell for reselection;
  • the IDLE state UE that is interested in the MBMS cluster service will read the MCCH to the neighboring cell to determine whether the service of interest is already started, and/or obtain the service of interest to itself.
  • MCCH related information For example, the UE in the IDLE state is interested in the service 1, the target cell (ie, the neighboring cell) A provides the service 1 , 2, the neighbor cell B provides the service 1 , 3 , and the neighbor cell C provides the service 2 , 4 .
  • the UE moves to the cell boundary, the signals of the neighboring cells A, B, and C are detected, and the UE wants to receive the service 1, and after screening, it is found that the A and B cells provide the service, and then the UE can according to the A, B cell. If the quality or the number of lost packets is determined to be reselected to the better quality A cell, the MCCH content of the A cell is obtained, and the A cell is selected for reselection;
  • Step S608 After reselecting to the target cell, the user equipment receives the cluster service sent by the target cell according to the content of the multicast control channel.
  • the UE may further include: before acquiring the content of the multicast control channel of the target cell of the MBMS that can provide the user equipment:
  • the UE acquires a mapping relationship between the TMGI of the target MBMS single frequency network area and the cluster group to which the user equipment belongs; when the UE cannot receive the MBMS of the source base station, determines the target MBMS single frequency network according to the mapping relationship.
  • the TMGI of the area corresponds to the TMGI in the cluster group in which the user equipment is interested
  • the MBMS information related to the MBMS in the target MBMS single frequency network area is obtained. That is, if the UE determines, according to the mapping relationship, that the TMGI of the target MBMS single frequency network area does not have a corresponding TMGI in the cluster group of interest, the multicast control channel of the target MBMS single frequency network area is not read. content.
  • the base station of the source MBMS single frequency network area broadcasts the cluster MBMSTMGI list and/or MCCH change indication information of the base station of the target MBMS single frequency network area (neighboring cell), and the IDLE state interested in the MBMS cluster service.
  • the UE After receiving the MCCH change indication information of the neighboring cell, the UE will read the MCCH to the neighboring cell to determine whether the service of interest is already started, and/or obtain the MCCH related information of the service of interest; the UE acquires the MBMS of interest in advance.
  • the content of the multicast control channel of the target cell can ensure the continuity of the trunking communication service when the UE switches.
  • Step S700 The Multi-cell/Multicast Coordination Entity (MCE) receives an MBMS session request from the upper layer that includes the cluster communication indication.
  • MCE Multi-cell/Multicast Coordination Entity
  • Step S702 The MCE forwards the MBMS session request to the base station in the MBSFN area, and forwards the header compression protocol ROHC algorithm parameter, and the ROHC algorithm parameter may include related parameters such as ROHC synchronization information, such as a compressed mode, and a packet without header compression. Cycle, the first parameter of the offset of the packet that performs the header compression, and the like;
  • Step S704 After receiving the MBMS session request and the header compression protocol ROHC algorithm parameter sent by the upper layer, the base station performs a header compression protocol ROHC algorithm compression on the MBMS data header according to the ROHC algorithm parameter.
  • the upper layer in the step S704 of the embodiment of the present invention may be an upper layer node or an upper layer network element such as an MCE or a Mobility Management Entity (MME).
  • MCE Mobility Management Entity
  • an MCE is used as an example for description;
  • the clustering service indication of the TMGI of the cluster communication is added for transmitting the information about the ROHC.
  • the data compressed in the embodiment of the present invention is the MBMS data from the MBMS GW, and does not include the control signaling data packet of the synchronization protocol.
  • the ROHC algorithm parameter is applicable to all base stations in the MBSFN area. If the BMSC has compressed the data header, the indication message of "RoHC Compression" should be carried in the MBMS session request, so that the MCE knows that the BMSC has already RoHC compression is performed, and the cluster service data indicating the base station to the MBMS session is prevented from being RoHC compressed. Since the MBMS can only use the Unidirectional mode compression in the unidirectional mode, the MCE needs to carry the five parameters of the profile, MAX_CID, L, TIMER-1 and TIMER-2 in the MBMS session request message sent to the base station, so that the same All base stations in an MBSFN Area use the same RoHC compression parameters to ensure consistent compression results. Of course, the five RoHC compression parameters of profile, MAX-CID, L, TIMER-1 and TIMER-2 can also be sent by the MCE to the base station through other messages.
  • Step S706 The base station sends the MBMS session information carrying the compression information of the ROHC algorithm to the user equipment through the multicast control channel.
  • Step S708 After receiving the MCCH content sent by the base station, the UE analyzes and learns the phase of the ROHC. The content is then decompressed from the clustered packets.
  • the base station uses the ROHC algorithm to compress the data headers for the trunking communication service, which greatly improves the efficiency of using the wireless resources.
  • the MBMS in various embodiments of the present invention may be a cluster service.
  • the UE sends an MBMS interest indication to the network side, and the network side selects a target cell that can provide the MBMS that is interested in the user equipment to perform handover according to the MBMS interest indication, thereby greatly reducing handover between the UEs.
  • the delay solves the technical problem that the prior art cannot guarantee the continuity of the trunking communication service during the area handover, and the target obtained by the base station of the source MBSFN area and the base station of the target MBSFN area and the base station of the target MBSFN area are mutually transmitted.
  • the temporary mobility group of the MBSFN area identifies the TMGI information, and the UE obtains the MCCH content of the target neighboring area in advance to ensure the continuity of the MBMS when the service scene changes dynamically, and satisfies the requirement of the continuity of the monthly service; the invention also realizes the good cluster communication. Scalability, and greatly improve the efficiency of wireless resource use; and reduce the delay when user equipment accesses the cluster communication group.
  • the base station 80 includes: a receiving unit.
  • receiving unit 800, transmitting unit 802, and processing unit 804 may be connected by a bus or other means.
  • the receiving unit 800 is configured to receive the temporary mobile group identity TMGI information corresponding to the current multimedia broadcast multicast service MBMS of the target base station and the MBMS interest indication sent by the user equipment, where the target base station is located in the target MBMS list.
  • the MBMS interest indication includes TMGI information corresponding to the MBMS that is used to identify the user equipment
  • the processing unit 804 is configured to: when the user equipment cannot receive the current MBMS of the base station 80, according to the MBMS interest And indicating the TMGI information corresponding to the current MBMS of the target base station, and selecting a target base station that can provide the MBMS that is interested in the user equipment to perform handover.
  • the receiving unit 800 is further configured to: receive the measurement report sent by the user equipment; the processing unit 804 is specifically configured to: when determining, according to the measurement report, that the user equipment cannot be connected When the current MBMS of the base station 80 is received, the target base station that can provide the MBMS that is interested in the user equipment is selected to perform handover according to the MBMS interest indication and the TMGI information corresponding to the current MBMS of the target base station.
  • the measurement report may include the MBMS interest indication; the processing unit 804 is specifically configured to: when determining, according to the measurement report, that the user equipment cannot receive the current MBMS of the base station 80, according to the MBMS interest indication And selecting, by the TMGI information corresponding to the current MBMS of the target base station, a target base station that can provide an MBMS that is interested in the user equipment to perform handover.
  • the measurement report may further include: the user equipment receiving the measurement information of whether the MBMS quality of the base station 80 is lower than a configuration threshold; when the user equipment receives the MBMS quality of the base station 80 is lower than a configuration threshold, It is determined that the user equipment cannot receive the current MBMS of the base station 80.
  • the processing unit 804 may be specifically configured to: according to the MBMS interest indication of the user equipment received by the receiving unit 800, determine, by using a handover decision, that the user equipment cannot receive the current MBMS of the base station 80, according to the MBMS interest. And indicating the TMGI information corresponding to the current MBMS of the target base station, and selecting a target base station that can provide the MBMS that is interested in the user equipment to perform handover.
  • the processing unit 804 may be specifically configured to: send a handover request to the selected target base station; the handover request carries a group corresponding to the MBMS that is interested in the user equipment that indicates that the target base station needs feedback
  • the control channel MCCH information is sent; the handover command is sent to the user equipment; and the handover command carries the MCCH information corresponding to the MBMS that is interested in the user equipment.
  • the receiving unit 800 is further configured to: receive an MBMS session request sent by an upper layer and a header compression protocol ROHC algorithm parameter;
  • the base station 80 may further include: a compression unit, configured to perform a header compression protocol ROHC algorithm compression on the MBMS data header according to the ROHC algorithm parameter;
  • the sending unit 802 is configured to send MBMS session information carrying the ROHC algorithm compression information to the user equipment by using the multicast control channel, so that the user equipment decompresses the MBMS data.
  • the receiving unit 800 and the sending unit 802 can be the antenna of the base station 80; the base station 80 can also include a storage unit for storing various data, etc., and the functions of each unit in the base station 80 can be The current mode is not repeated here.
  • the user equipment 90 includes: a receiving unit 900, a sending unit 902, and a processing unit 904. (The number of processing units 904 in the user equipment 90 may be one or more, and one processing unit is exemplified in FIG. 9).
  • the receiving unit 900, the transmitting unit 902, and the processing unit 904 may be connected by a bus or other means.
  • the sending unit 902 is configured to send a multimedia broadcast multicast service MBMS interest indication to the source base station, where the MBMS interest indication includes the temporary mobile group identifier TMGI information corresponding to the MBMS that the user equipment 90 is interested in;
  • the receiving unit 900 is configured to receive a handover command sent by the source base station, where the handover command is used by the source base station to select an MBMS that can provide the user equipment to be interested according to the MBMS interest indication and the acquired TMGI information of the target base station.
  • the processing unit 904 is configured to receive the cluster service in the target MBMS single frequency network area by the receiving unit 900 according to the MCCH information.
  • processing unit 904 is further configured to:
  • a measurement report is generated; and is sent to the source base station by the transmitting unit 902;
  • the measurement report is generated and sent to the source base station by the sending unit 902, where the measurement report includes an MBMS interest indication reported to the source base station; the MBMS interest indication includes It is used to identify the TMGI information corresponding to the MBMS that the user equipment 90 is interested in.
  • the measurement report includes at least one of the following information:
  • Target cell identifier of the MBMS single frequency network area
  • Target channel quality information of the MBMS single frequency network area
  • Target MBMS reception quality information of the MBMS single frequency network area
  • the user equipment 90 includes but is not limited to a mobile terminal, a tablet computer, and a personal digital device.
  • the functions of the units in the user equipment 90 may be referred to the specific implementation manners in the foregoing method embodiments, and details are not described herein again.
  • the following is a schematic structural diagram of another embodiment of the base station provided by the present invention, which is shown in FIG. 10, and an implementation manner of the device item is described corresponding to the foregoing method item, where the base station 100 includes : receiving unit 1000 and transmitting unit 1002. among them
  • the receiving unit 1000 is configured to receive the temporary mobile group identity TMGI information corresponding to the current multimedia broadcast multicast service MBMS of the target base station, where the target base station is located in the target MBMS single frequency network area;
  • the sending unit 1002 is configured to notify the user equipment located in the source MBMS single frequency network area that the received TMGI information corresponding to the current MBMS of the target base station is broadcasted.
  • the sending unit 1002 is further configured to: when the MBMS information of the base station itself changes, notify the target base station of MCCH change indication information;
  • the receiving unit 1000 is further configured to: receive MCCH change indication information notified when the MBMS information of the target base station changes;
  • the sending unit 1002 is further configured to: broadcast the received MCCH change indication information of the target base station to the user equipment in the MBMS single frequency network area.
  • the receiving unit 1000 is further configured to receive an MBMS session request sent by an upper layer and a header compression protocol ROHC algorithm parameter;
  • the base station 100 may further include: a compression unit, configured to perform a header compression protocol ROHC algorithm compression on the MBMS data header according to the ROHC algorithm parameter;
  • the sending unit 1002 is further configured to send the MBMS session information carrying the ROHC algorithm compression information to the user equipment by using the multicast control channel, so that the user equipment decompresses the MBMS data.
  • the receiving unit 1000 and the transmitting unit 1002 can be the antenna of the base station 100; the base station 80 can further include a storage unit for storing various data, and for processing various data, and the receiving unit 1000 is controlled to receive and control.
  • the processing unit of the transmitting unit 1002 and the like, and the functions of the units in the base station 100 may refer to the specific implementation manners in the foregoing method embodiments, and details are not described herein again.
  • the following is a schematic structural diagram of another embodiment of the user equipment provided by the present invention, which is shown in FIG.
  • the user equipment 110 includes: a receiving unit 1100, a sending unit 1102, and The processing unit 1104 (the number of processing units 1104 in the user equipment 110 may be one or more, and one processing unit is taken as an example in FIG. 11).
  • the receiving unit 1100, the transmitting unit 1102, and the processing unit 1104 may be connected by a bus or other means. among them
  • the receiving unit 1100 is configured to receive a broadcast notification of the source base station, where the broadcast notification includes the temporary mobile group identifier TMGI information corresponding to the current multimedia broadcast multicast service MBMS of the target base station acquired by the source base station, where the target base station is located in the target MBMS list.
  • the broadcast notification includes the temporary mobile group identifier TMGI information corresponding to the current multimedia broadcast multicast service MBMS of the target base station acquired by the source base station, where the target base station is located in the target MBMS list.
  • the receiving unit 1100 is further configured to: when the user equipment cannot receive the current MBMS of the source base station, acquire, according to the TMGI information corresponding to the current MBMS of the target base station, the MBMS related to the user equipment 110 in the target MBMS single frequency network area.
  • Multicast control channel MCCH information
  • the processing unit 1104 is configured to select a target cell in the target MBMS single frequency network area to perform cell reselection;
  • the receiving unit 1100 is further configured to: after the cell reselects to the target MBMS single frequency network area, receive the cluster service according to the MCCH information.
  • the receiving unit 1100 is further configured to: receive MCCH change indication information that is broadcasted by the source base station, where the MCCH change indication information is used to indicate that the MBMS information of the target base station is changed.
  • receiving unit 1100 is specifically configured to:
  • the processing unit 1104 is specifically configured to:
  • the receiving unit 1100 acquires the user equipment 110 in the target MBMS single frequency network area.
  • Interested MBMS related multicast control channel MCCH information When the user equipment 110 is unable to receive the current MBMS of the source base station, determine, according to the mapping relationship, whether the TMGI corresponding to the current MBMS of the target base station corresponds to the TMGI in the cluster group that the user equipment 110 is interested in; and when determining When the TMGI in the cluster group that is of interest to the user equipment 110 is corresponding, the receiving unit 1100 acquires the user equipment 110 in the target MBMS single frequency network area.
  • Interested MBMS related multicast control channel MCCH information When the user equipment 110 is unable to receive the current MBMS of the source base station, determine, according to the mapping relationship, whether the TMGI corresponding to the current MBMS of the target base station corresponds to the TMGI in the cluster group that the user equipment 110 is interested in; and when determining When the TMGI in the cluster group that is of interest to
  • the target cell in the target MBMS single frequency network area is selected for cell reselection.
  • the user equipment 110 includes, but is not limited to, other electronic devices such as a mobile terminal, a tablet computer, and a personal digital assistant.
  • the functions of the units in the user equipment 110 may be corresponding to the specific implementation manners in the foregoing method embodiments. Let me repeat.
  • the present invention also provides related systems for cooperating with the implementation of the above described aspects. The following is a detailed description of the structure of the cluster communication system provided by the embodiment of the present invention shown in FIG. 12:
  • the trunking communication system 120 includes a base station 1200 and a user equipment 1202, wherein
  • the base station 1200 can refer to the base station 80 in the foregoing embodiment of FIG. 8 , and details are not described herein again.
  • the user equipment 1202 can refer to the user equipment 90 in the foregoing embodiment of FIG. 9 , and details are not described herein again.
  • FIG. 13 a schematic structural diagram of another embodiment of a trunking communication system provided by the present invention, the trunking communication system 130 includes a base station 1300 and a user equipment 1302, wherein
  • the base station 1300 can refer to the base station 100 in the foregoing embodiment of FIG. 10, and details are not described herein again.
  • the user equipment 1302 can refer to the user equipment 110 in the foregoing embodiment of FIG. 11, and details are not described herein.
  • the trunking communication system 120 and the trunking communication system 130 may also include devices such as servers, service centers, and the like.
  • the UE indicates an MBMS interest indication to the network side, and the network side selects a target cell that can provide the MBMS that is interested in the user equipment to perform handover according to the MBMS interest indication, thereby greatly reducing the UE in the area.
  • the switching delay between the two technologies solves the technical problem that the prior art cannot guarantee the continuity of the trunking communication service in the area switching process, and sends the base station of the source MBSFN area of the source MBSFN area to the base station of the target MBSFN area.
  • the UE acquires the MCCH content of the target neighboring area in advance, and ensures the continuity of the MBMS when the service scene changes dynamically, and satisfies the requirement of service continuity; the invention also implements the cluster communication. Good scalability, and greatly improve the efficiency of wireless resource use; and reduce the delay when user equipment accesses the cluster communication group.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Abstract

L'invention concerne une station de base. La station de base comporte: une unité de réception, utilisée pour recevoir des informations d'identité temporaire de groupe de mobiles (TMGI) qui sont émises par une station de base cible et qui correspondent à un service courant de diffusion générale/groupée multimédia (MBMS) de la station de base cible, et pour recevoir une indication d'intérêt pour le MBMS émise par un équipement d'utilisateur, la station de base cible étant située dans une région de réseau à fréquence unique cible du MBMS, et l'indication d'intérêt pour le MBMS comportant des informations de TMGI correspondant au MBMS auquel s'intéresse l'équipement d'utilisateur; et une unité de traitement, utilisée pour sélectionner, en fonction de l'indication d'intérêt pour le MBMS et des informations de TMGI correspondant au MBMS courant de la station de base cible, la station de base cible capable d'assurer le MBMS auquel s'intéresse l'équipement d'utilisateur lorsque l'équipement d'utilisateur ne peut pas recevoir le MBMS courant de la station de base, de façon à procéder au changement. L'invention concerne également un procédé de communication de jonction, un équipement d'utilisateur et un système correspondants. En utilisant la présente invention, la continuité du MBMS est assurée lorsqu'un scénario de service est modifié, satisfaisant ainsi des exigences de continuité de service.
PCT/CN2014/071213 2014-01-23 2014-01-23 Procédé de communication de jonction, station de base, équipement d'utilisateur et système Ceased WO2015109475A1 (fr)

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