WO2020210930A1 - 基于集群通信的组播业务实现方法及相关设备 - Google Patents

基于集群通信的组播业务实现方法及相关设备 Download PDF

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Publication number
WO2020210930A1
WO2020210930A1 PCT/CN2019/082614 CN2019082614W WO2020210930A1 WO 2020210930 A1 WO2020210930 A1 WO 2020210930A1 CN 2019082614 W CN2019082614 W CN 2019082614W WO 2020210930 A1 WO2020210930 A1 WO 2020210930A1
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multicast
group
channel
ues
dedicated
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PCT/CN2019/082614
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English (en)
French (fr)
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郑泽榕
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海能达通信股份有限公司
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Priority to PCT/CN2019/082614 priority Critical patent/WO2020210930A1/zh
Publication of WO2020210930A1 publication Critical patent/WO2020210930A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel

Definitions

  • the present invention relates to the field of communication technology, and more specifically, to a method and related equipment for implementing a multicast service based on cluster communication.
  • LTE Long Term Evolution
  • UMTS Universal Mobile Telecommunications System
  • 3GPP The 3rd Generation Partnership Project
  • B-TrunC broadband trunking communication
  • MCPTT Mobility Critical Push to Talk, Push to Talk
  • broadband trunking communications mostly adopt the following methods:
  • the multicast channel corresponding to the multicast service is established in real time through the eMBMS technology.
  • the UE involved in the multicast service is connected to the group call through unicast.
  • the UEs involved in the multicast service are notified by unicast to transfer to the established multicast channel.
  • unicast will be used for a period of time before the successful establishment of the multicast channel.
  • the use of unicast to implement the multicast service requires a establishment related to the multicast service. Multiple unicast channels with the same number of UEs will occupy a large amount of air interface resources and cause a waste of air interface resources.
  • the present invention is proposed in order to provide a method and related equipment for realizing a multicast service based on trunking communication that overcomes or at least partially solves the above problems.
  • the specific plan is as follows:
  • a method for implementing multicast services based on trunking communication comprising:
  • the activation information of the dedicated multicast channel is notified to the UEs in the current multicast group, and multicast data is delivered to all the UEs through the dedicated multicast channel. Describe the UEs in the current multicast group.
  • the method before the sending the group call data to the UEs in the current multicast group through an empty common multicast channel, the method further includes:
  • the air interface of the base station broadcasts the information of the public multicast channel, so that the UE camping on the base station can obtain the information of the public multicast channel.
  • the method further includes:
  • the group call initiator UE is any one of the UEs camping on the base station, and the group call request includes the group call The multicast group ID to which the initiator UE belongs, and the multicast group corresponding to the multicast group ID is the current multicast group;
  • the notifying UEs in the current multicast group to receive multicast data includes:
  • the notifying UEs in the multicast group ID to receive multicast data includes:
  • the notifying UEs in the current multicast group of the information that the dedicated multicast channel is enabled includes:
  • the information about the activation of the dedicated multicast channel is notified to the UEs in the current multicast group by means of unicast signaling.
  • the notifying UEs in the current multicast group of the information that the dedicated multicast channel is enabled includes:
  • a method for implementing multicast services based on trunking communication comprising:
  • a device for realizing multicast services based on cluster communication including:
  • the first sending unit is configured to deliver multicast data to UEs in the current multicast group through a pre-established public multicast channel;
  • a dedicated multicast channel establishment unit configured to start to establish a dedicated multicast channel when the first sending unit delivers multicast data to UEs in the current multicast group through a pre-established public multicast channel;
  • the first notification unit is configured to notify UEs in the current multicast group of the activation information of the dedicated multicast channel after the establishment of the dedicated multicast channel is completed;
  • the second sending unit is configured to deliver multicast data to UEs in the current multicast group through the dedicated multicast channel.
  • the device further includes a public multicast channel establishment unit, and the public multicast channel establishment unit is specifically configured to deliver the multicast data to the current multicast group through a pre-established public multicast channel.
  • the base station air interface broadcasts the information of the public multicast channel so that the UE camping on the base station can obtain the information of the public multicast channel.
  • the device further includes:
  • the cluster group call request receiving unit is configured to receive a cluster group call request sent by the group call initiator UE; the group call initiator UE is any one of the UEs camping on the base station, and the set The group call request includes the multicast group ID to which the group call initiator UE belongs, and the multicast group corresponding to the multicast group ID is the current multicast group;
  • the second notification unit is used to notify UEs in the current multicast group to receive multicast data.
  • the second notification unit is specifically configured to:
  • the second notification unit is specifically configured to:
  • the first notification unit is specifically configured to:
  • the information about the activation of the dedicated multicast channel is notified to the UEs in the current multicast group by means of unicast signaling.
  • the first notification unit is specifically configured to:
  • a device for realizing multicast services based on cluster communication including:
  • the receiving unit is configured to receive multicast data delivered by the network side through the pre-established public multicast channel; receive the activation information of the dedicated multicast channel sent by the network side; receive the group delivered by the network side through the dedicated multicast channel Broadcast data.
  • a network-side device includes a processor, a memory, and a program stored in the memory and capable of running on the processor, and the processor implements the cluster communication-based multicast service as described above when the program is executed Implementation.
  • a terminal the terminal includes a receiver, the receiver is configured to receive multicast data delivered by the network side through a pre-established public multicast channel; receive the activation information of the dedicated multicast channel sent by the network side; receive the network side Multicast data delivered through the dedicated multicast channel.
  • the network side establishes a public multicast channel in advance, and when the multicast service is implemented, the multicast data is first passed through the public multicast channel. Send to the UEs in the current multicast group and establish a dedicated multicast channel. After the establishment of the dedicated multicast channel is completed, the activation information of the dedicated multicast channel is notified to the UEs in the current multicast group, and The multicast data is delivered to UEs in the current multicast group through the dedicated multicast channel. Based on the above method, a public multicast channel that can be used by various multicast services is established in advance.
  • the public multicast channel is used to transmit multicast data, and a dedicated multicast channel for multicast services is established in real time. After the establishment, the multicast data will be migrated to the dedicated multicast channel for transmission. This method will not occupy too much air interface resources and can ensure the timeliness of the multicast service.
  • FIG. 1 is a schematic flowchart of a method for implementing a multicast service based on trunking communication disclosed in an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of yet another method for implementing a multicast service based on trunking communication disclosed in an embodiment of the present invention
  • FIG. 3 is a schematic diagram of signaling interaction for notifying UEs in the current multicast group to receive multicast data according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of signaling interaction for notifying UEs in the current multicast group of the enabling information of a dedicated multicast channel according to an embodiment of the present invention
  • Figure 5 is a schematic diagram of signaling interaction for notifying UEs in the current multicast group of the enabling information of a dedicated multicast channel according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of signaling interaction of an example of a method for implementing a multicast service based on trunking communication disclosed in an embodiment of the present invention
  • FIG. 7 is a schematic diagram of signaling interaction of an example of a method for implementing a multicast service based on trunking communication disclosed in an embodiment of the present invention
  • FIG. 8 is a schematic flowchart of a method for implementing a multicast service based on trunking communication according to an embodiment of the present invention
  • FIG. 9 is a schematic structural diagram of a device for implementing a multicast service based on trunking communication disclosed in an embodiment of the present invention.
  • Figure 1 is a schematic flow chart of a method for implementing a multicast service based on trunking communication disclosed in an embodiment of the present invention.
  • Step S100 Deliver multicast data to UEs in the current multicast group through a pre-established public multicast channel, and establish a dedicated multicast channel;
  • the network side sends multicast data through the public multicast channel. All UEs in the cluster network will listen to the multicast data in the public multicast channel, but only the UEs in the current multicast group will detect the multicast data in the public multicast channel. It will receive the multicast data after hearing the public multicast channel, and other UEs will not receive it.
  • the network side When the network side delivers multicast data through the public multicast channel, it will also establish a dedicated multicast channel for realizing current multicast services.
  • Step S110 After the establishment of the dedicated multicast channel is completed, the activation information of the dedicated multicast channel is notified to the UE in the current multicast group, and the multicast data is delivered to the current group through the dedicated multicast channel Broadcast the UE in the group.
  • the dedicated multicast channel After the dedicated multicast channel is established on the network side, it will send a dedicated multicast channel activation message to UEs in the current multicast group, and deliver multicast data through the dedicated multicast channel. After the UE receives the activation message of the dedicated multicast channel, it switches from receiving group call data from the public multicast channel to receiving multicast data from the dedicated multicast channel.
  • the network side establishes a public multicast channel in advance, and when the multicast service is implemented, the multicast data is first delivered to the current multicast group through the public multicast channel
  • the UE in the current multicast group is notified of the enabling information of the dedicated multicast channel after the establishment of the dedicated multicast channel is completed, and the multicast data is passed through the dedicated group
  • the broadcast channel is delivered to the UEs in the current multicast group.
  • a public multicast channel that can be used by various multicast services is established in advance.
  • the public multicast channel is used to transmit multicast data, and a dedicated multicast channel for multicast services is established in real time. After the establishment, the multicast data will be migrated to the dedicated multicast channel for transmission. This method will not occupy too much air interface resources and can ensure the timeliness of the multicast service.
  • FIG. 2 is a schematic flowchart of another method for implementing a multicast service based on trunking communication disclosed in an embodiment of the present invention. The method is applied to the network side of a trunking communication system, and the method includes:
  • Step S200 Use the evolved multimedia multicast service eMBMS technology to establish a public multicast channel.
  • Step S210 The base station air interface broadcasts the information of the public multicast channel, so that the UE camping on the base station can obtain the information of the public multicast channel.
  • the information of the public multicast channel includes information such as TMGI (Temporary Mobile Group Identity, Temporary Mobile Group Identity).
  • TMGI Temporary Mobile Group Identity, Temporary Mobile Group Identity
  • Step S220 Receive a group call request sent by the group call initiator UE; the group call initiator UE is any one of the UEs camping on the base station, and the group call request includes all The multicast group ID to which the group call initiator UE belongs, and the multicast group corresponding to the multicast group ID is the current multicast group.
  • the group call request sent by the group call initiator UE includes information such as the multicast group ID to which the group call initiator UE belongs and the group call type, and the group call type includes voice type and video type.
  • Step S230 Notify UEs in the current multicast group to receive multicast data.
  • the network side may notify UEs in the current multicast group to receive multicast data by means of paging. Specifically, the network side directly issues a UE paging message, and carries a multicast flag in the UE paging message, and the IDLE state UE directly starts to receive multicast data after receiving the UE paging message.
  • the network side may notify UEs in the current multicast group to receive multicast data through unicast signaling. Specifically, the network side unicast paging to the UE in the IDLE state in the current multicast group. After receiving the unicast paging message, the UE in the IDLE state in the current multicast group enters the connected state, and the network side passes the single Broadcast NAS signaling to notify UEs in the connected state in the current multicast group to receive multicast data.
  • the network side may notify UEs in the current multicast group to receive multicast data through unicast signaling. Specifically, the network side unicast paging to the UE in the IDLE state in the current multicast group. After receiving the unicast paging message, the UE in the IDLE state in the current multicast group enters the connected state, and the network side passes the single Broadcast NAS signaling to notify UEs in the connected state in the current multicast group to receive multicast data.
  • Figure 3 for specific signaling interaction.
  • Step S240 The multicast data is delivered to the UEs in the current multicast group through the pre-established public multicast channel, and a dedicated multicast channel is established at the same time.
  • Step S250 After the establishment of the dedicated multicast channel is completed, the activation information of the dedicated multicast channel is notified to the UEs in the current multicast group, and the multicast data is downloaded through the dedicated multicast channel. To the UEs in the current multicast group.
  • the network side may notify the UEs in the current multicast group of the information that the dedicated multicast channel is enabled through unicast signaling. Specifically, the information about the activation of the dedicated multicast channel is notified to UEs in the connected state in the current multicast group through unicast signaling. Refer to Figure 4 for specific signaling interaction.
  • the network side may send the information that the dedicated multicast channel is enabled to the UE in the current multicast group through the common multicast channel. Refer to Figure 5 for specific signaling interaction.
  • the embodiment of the present invention discloses an example of a method for implementing a multicast service based on trunking communication.
  • FIG. 6, is a group communication based on trunking communication disclosed in an embodiment of the present invention.
  • the LTE network side uses eMBMS technology to pre-establish a multicast channel on the air interface as the air interface public multicast channel, and all UEs that reside on the eNB can obtain public multicast Channel information.
  • UE2 initiates a cluster group call, and the network side informs the UE as the called party in the group call through paging or unicast signaling.
  • the network side has established the transmission bearer of the trunking call from the EPC to the base station.
  • the air interface of the base station side has not yet established the corresponding trunking group call dedicated carrier channel.
  • the group call data on the network side is delivered to the air interface through the public multicast channel.
  • UEs in the group While transmitting the group call data, the network side completes the dedicated eMBMS air interface multicast channel for this group call, informs the UE, and transfers the network side multicast data stream to the dedicated air interface multicast channel for transmission. Stop sending group call data on the public multicast channel.
  • the embodiment of the present invention discloses an example of a method for implementing a multicast service based on cluster communication.
  • FIG. 7 is a group communication based on cluster communication disclosed in an embodiment of the present invention.
  • the BM-SC when the group call uses the pre-established eMBMS to carry group data, the BM-SC is again requested to establish a dedicated eMBMS bearer, and the access network side establishes the eMBMS After the bearer is carried and the air interface information update is completed, the BM-SC informs the GCS AS through the eMBMS bearer status notification message, and the GCS AS informs the UE to update the multicast channel through the announcement process (24379MBMS bearer announcement procedures or MAP message). Disable the pre-established eMBMS bearer and enable a new eMBMS bearer.
  • the eMBMS bearer information is updated on the air interface, which takes 12 to 22 seconds (mainly the MCCH update cycle protocol sets two enumerated values 5 seconds and 10 seconds, and the air interface needs to notify the UE at least one cycle in advance, resulting in a long update time).
  • Various abnormalities may occur during this period, such as the end of the call, etc. Only the normal process is given here, and the abnormal process is not explained here.
  • FIG. 8 is a schematic flowchart of a method for implementing a multicast service based on trunking communication disclosed in an embodiment of the present invention. The method is applied to the UE side of a trunking communication system. The method includes the following steps:
  • Step S800 receiving the multicast data delivered by the network side through the pre-established public multicast channel
  • Step S810 receiving the activation information of the dedicated multicast channel sent by the network side;
  • Step S820 Receive the multicast data delivered by the network side through the dedicated multicast channel.
  • Figure 9 is a schematic structural diagram of a multicast service implementation device based on trunking communication disclosed in an embodiment of the present invention.
  • the device is applied to the network side of a trunking communication system, and the network side is a trunking communication system except UE A general term for devices other than those that have at least one public multicast channel established in advance on the network side.
  • the device includes the following units:
  • the first sending unit 10 is configured to deliver multicast data to UEs in the current multicast group through a pre-established public multicast channel;
  • the dedicated multicast channel establishing unit 11 is configured to establish a dedicated multicast channel when the first sending unit delivers multicast data to UEs in the current multicast group through a pre-established public multicast channel;
  • the first notification unit 12 is configured to notify UEs in the current multicast group of the activation information of the dedicated multicast channel after the establishment of the dedicated multicast channel is completed;
  • the second sending unit 13 is configured to deliver multicast data to UEs in the current multicast group through the dedicated multicast channel.
  • the device further includes a public multicast channel establishment unit, and the public multicast channel establishment unit is specifically configured to deliver the multicast data to the current multicast group through a pre-established public multicast channel.
  • the base station air interface broadcasts the information of the public multicast channel so that the UE camping on the base station can obtain the information of the public multicast channel.
  • the device further includes:
  • the cluster group call request receiving unit is configured to receive a cluster group call request sent by the group call initiator UE; the group call initiator UE is any one of the UEs camping on the base station, and the set The group call request includes the multicast group ID to which the group call initiator UE belongs, and the multicast group corresponding to the multicast group ID is the current multicast group;
  • the second notification unit is used to notify UEs in the current multicast group to receive multicast data.
  • the second notification unit is specifically configured to:
  • the second notification unit is specifically configured to:
  • the first notification unit is specifically configured to:
  • the information about the activation of the dedicated multicast channel is notified to the UEs in the current multicast group by means of unicast signaling.
  • the first notification unit is specifically configured to:
  • the embodiment of the present invention also discloses a cluster communication-based multicast service implementation device applied to the UE side of the cluster communication system.
  • the device includes a receiving unit, and the receiving unit is specifically configured to receive a public Multicast data delivered by the multicast channel; receiving activation information of the dedicated multicast channel sent by the network side; and multicast data delivered by the network side through the dedicated multicast channel.
  • the embodiment of the present invention also provides a network-side device.
  • the network-side device includes a processor, a memory, and a program stored on the memory and running on the processor, and the processor implements the following steps when the program is executed:
  • the activation information of the dedicated multicast channel is notified to the UEs in the current multicast group, and multicast data is delivered to all the UEs through the dedicated multicast channel. Describe the UEs in the current multicast group.
  • the method before the delivering the multicast data to the UEs in the current multicast group through a pre-established public multicast channel, the method further includes:
  • the air interface of the base station broadcasts the information of the public multicast channel, so that the UE camping on the base station can obtain the information of the public multicast channel.
  • the method further includes:
  • the group call initiator UE is any one of the UEs camping on the base station, and the group call request includes the group call The multicast group ID to which the initiator UE belongs, and the multicast group corresponding to the multicast group ID is the current multicast group;
  • the notifying UEs in the current multicast group to receive multicast data includes:
  • the notifying UEs in the multicast group ID to receive multicast data includes:
  • the notifying UEs in the current multicast group of the information that the dedicated multicast channel is enabled includes:
  • the information about the activation of the dedicated multicast channel is notified to the UEs in the current multicast group by means of unicast signaling.
  • the notifying UEs in the current multicast group of the information that the dedicated multicast channel is enabled includes:
  • the embodiment of the present invention also provides a terminal, the terminal includes a receiver, and the receiver is configured to receive multicast data delivered by the network side through a pre-established public multicast channel; and receive a dedicated multicast channel sent by the network side The activation information; receiving the multicast data delivered by the network side through the dedicated multicast channel.
  • the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.
  • a computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.
  • the computing device includes one or more processors (CPU), input/output interfaces, network interfaces, and memory.
  • processors CPU
  • input/output interfaces network interfaces
  • memory volatile and non-volatile memory
  • the memory may include non-permanent memory in a computer readable medium, random access memory (RAM) and/or non-volatile memory, such as read-only memory (ROM) or flash memory (flash RAM).
  • RAM random access memory
  • ROM read-only memory
  • flash RAM flash memory
  • Computer-readable media include permanent and non-permanent, removable and non-removable media, and information storage can be realized by any method or technology.
  • the information can be computer-readable instructions, data structures, program modules, or other data.
  • Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical storage, Magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media can be used to store information that can be accessed by computing devices. According to the definition in this article, computer-readable media does not include transitory media, such as modulated data signals and carrier waves.
  • this application can be provided as methods, systems, or computer program products. Therefore, this application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.

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Abstract

本发明公开了一种基于集群通信的组播业务实现方法及相关设备，网络侧预先建立公共组播信道，在组播业务实现时，将组播数据先通过公共组播信道下发至当前组播群组中的UE，并且建立专用组播信道，在建立完成专用组播信道之后，将所述专用组播信道的启用信息通知给当前组播群组中的UE，并将组播数据通过所述专用组播信道下发至当前组播群组中的UE。基于上述方法，预先建立各种组播业务都可以使用的公共组播信道，在组播业务开始阶段，使用该公共组播信道传输组播数据，并实时建立针对组播业务的专用组播信道，建好之后，则将组播数据迁移至专用组播信道传输，这种方式即不会占用过多的空口资源又能保证组播业务的时效性。

Description

基于集群通信的组播业务实现方法及相关设备 技术领域
本发明涉及通信技术领域，更具体的说，是涉及一种基于集群通信的组播业务实现方法及相关设备。
背景技术
LTE(Long Term Evolution，长期演进)是由3GPP(The 3rd Generation Partnership Project，第三代合作伙伴计划)组织制定的UMTS(Universal Mobile Telecommunications System，通用移动通信系统)技术标准的长期演进。当前，LTE技术已在公众移动通信网络大规模应用，这为宽带集群通信发展奠定了坚实的技术和产业基础，因此，基于LTE技术的宽带集群通信(B-TrunC)系统也应运而生。
当前，宽带集群通信的MCPTT(Mission Critical Push to Talk，一键通)的组播业务的实现方式多采用如下方式：
在MCPTT组播业务开始时，实时通过eMBMS技术建立与该组播业务对应的组播信道，在组播信道组建成功之前，先通过单播将该组播业务涉及的UE接入组呼，在组播信道组建成功之后，再通过单播告知该组播业务涉及的UE转到组建好的组播信道中。这种方式，由于通过eMBMS技术建立组播信道的过程漫长，会导致组播信道组建成功之前的一段时间一直采用单播，而采用单播实现该组播业务，需要建立与该组播业务涉及的UE的数量一致的多个单播信道，会占用大量的空口资源，造成了空口资源的浪费。
因此，现有技术中实现宽带集群通信的MCPTT的组播业务的方式均会造成空口资源的浪费。
发明内容
鉴于上述问题，提出了本发明以便提供一种克服上述问题或者至少部分地 解决上述问题的基于集群通信的组播业务实现方法及相关设备。具体方案如下：
一种基于集群通信的组播业务实现方法，所述方法包括：
将组播数据通过预先建立的公共组播信道下发至当前组播群组中的UE，并且建立专用组播信道；
在建立完成所述专用组播信道之后，将所述专用组播信道的启用信息通知给所述当前组播群组中的UE，并将组播数据通过所述专用组播信道下发至所述当前组播群组中的UE。
可选地，在所述将组呼数据通过空公共组播信道下发至当前组播群组中的UE之前，所述方法还包括：
采用演进多媒体多播服务eMBMS技术建立公共组播信道；
基站空口广播所述公共组播信道的信息以使驻留所述基站的UE获取所述公共组播信道的信息。
可选地，所述方法还包括：
接收组呼发起方UE发送的集群组呼请求；所述组呼发起方UE为所述驻留所述基站的UE中的任意一个UE，所述集群组呼请求中包括所述组呼发起方UE所属的组播群组ID，所述组播群组ID对应的组播群组为当前组播群组；
通知所述当前组播群组中的UE接收组播数据。
可选地，所述通知所述当前组播群组中的UE接收组播数据，包括：
通过寻呼的方式通知所述当前组播群组中的UE接收组播数据。
可选地，所述通知所述组播群组ID内的UE接收组播数据，包括：
通过单播信令的方式通知所述当前组播群组中的UE接收组播数据。
可选地，所述将所述专用组播信道启用的信息通知给当前组播群组中的UE，包括：
通过单播信令的方式将所述专用组播信道启用的信息通知给当前组播群组中的UE。
可选地，所述将所述专用组播信道启用的信息通知给当前组播群组中的UE，包括：
将所述专用组播信道启用的信息通过所述公共组播信道发送至所述当前 组播群组中的UE。
一种基于集群通信的组播业务实现方法，所述方法包括：
接收网络侧通过预先建立的公共组播信道下发的组播数据；
接收网络侧发送的专用组播信道的启用信息；
接收网络侧通过所述专用组播信道下发的组播数据。
一种基于集群通信的组播业务实现装置，包括：
第一发送单元，用于将组播数据通过预先建立的公共组播信道下发至当前组播群组中的UE；
专用组播信道建立单元，用于在第一发送单元将组播数据通过预先建立的公共组播信道下发至当前组播群组中的UE时开始建立专用组播信道；
第一通知单元，用于在建立完成所述专用组播信道之后，将所述专用组播信道的启用信息通知给所述当前组播群组中的UE；
第二发送单元，用于将组播数据通过所述专用组播信道下发至所述当前组播群组中的UE。
可选地，所述装置还包括，公共组播信道建立单元，所述公共组播信道建立单元具体用于在所述将组播数据通过预先建立的公共组播信道下发至当前组播群组中的UE之前，采用演进多媒体多播服务eMBMS技术建立公共组播信道；基站空口广播所述公共组播信道的信息以使驻留所述基站的UE获取所述公共组播信道的信息。
可选地，所述装置还包括：
集群组呼请求接收单元，用于接收组呼发起方UE发送的集群组呼请求；所述组呼发起方UE为所述驻留所述基站的UE中的任意一个UE，所述集群组呼请求中包括所述组呼发起方UE所属的组播群组ID，所述组播群组ID对应的组播群组为当前组播群组；
第二通知单元，用于通知所述当前组播群组中的UE接收组播数据。
可选地，所述第二通知单元，具体用于：
通过寻呼的方式通知所述当前组播群组中的UE接收组播数据。
可选地，所述第二通知单元，具体用于：
通过单播信令的方式通知所述当前组播群组中的UE接收组播数据。
可选地，所述第一通知单元，具体用于：
通过单播信令的方式将所述专用组播信道启用的信息通知给当前组播群组中的UE。
可选地，所述第一通知单元，具体用于：
将所述专用组播信道启用的信息通过所述公共组播信道发送至所述当前组播群组中的UE。
一种基于集群通信的组播业务实现装置，包括：
接收单元，用于接收网络侧通过预先建立的公共组播信道下发的组播数据；接收网络侧发送的专用组播信道的启用信息；接收网络侧通过所述专用组播信道下发的组播数据。
一种网络侧设备，所述网络侧设备包括处理器、存储器及存储在存储器上并可在处理器上运行的程序，所述处理器执行程序时实现如上所述的基于集群通信的组播业务实现方法。
一种终端，所述终端包括接收器，所述接收器用于接收网络侧通过预先建立的公共组播信道下发的组播数据；接收网络侧发送的专用组播信道的启用信息；接收网络侧通过所述专用组播信道下发的组播数据。
借由上述技术方案，本发明提供的基于集群通信的组播业务实现方法及相关设备，网络侧预先建立公共组播信道，在组播业务实现时，将组播数据先通过公共组播信道下发至当前组播群组中的UE，并且建立专用组播信道，在建立完成专用组播信道之后，将所述专用组播信道的启用信息通知给当前组播群组中的UE，并将组播数据通过所述专用组播信道下发至当前组播群组中的UE。基于上述方法，预先建立各种组播业务都可以使用的公共组播信道，在组播业务开始阶段，使用该公共组播信道传输组播数据，并实时建立针对组播业务的专用组播信道，建好之后，则将组播数据迁移至专用组播信道传输，这种方式即不会占用过多的空口资源又能保证组播业务的时效性。
上述说明仅是本发明技术方案的概述，为了能够更清楚了解本发明的技术手段，而可依照说明书的内容予以实施，并且为了让本发明的上述和其它目的、特征和优点能够更明显易懂，以下特举本发明的具体实施方式。
附图说明
通过阅读下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的，而并不认为是对本发明的限制。而且在整个附图中，用相同的参考符号表示相同的部件。在附图中：
图1为本发明实施例公开的一种基于集群通信的组播业务实现方法的流程示意图；
图2为本发明实施例公开的又一种基于集群通信的组播业务实现方法的流程示意图；
图3为本发明实施例公开的一种通知当前组播群组中的UE接收组播数据的信令交互示意图；
图4为本发明实施例公开的一种将专用组播信道的启用信息通知给当前组播群组中的UE的信令交互示意图；
图5为本发明实施例公开的一种将专用组播信道的启用信息通知给当前组播群组中的UE的信令交互示意图；
图6为本发明实施例公开的一种基于集群通信的组播业务实现方法的示例的信令交互示意图；
图7为本发明实施例公开的一种基于集群通信的组播业务实现方法的示例的信令交互示意图；
图8为本发明实施例公开的一种基于集群通信的组播业务实现方法的流程示意图；
图9为本发明实施例公开的一种基于集群通信的组播业务实现装置的结构示意图。
具体实施方式
下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例，然而应当理解，可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻地理解本 公开，并且能够将本公开的范围完整的传达给本领域的技术人员。
请参阅附图1，图1为本发明实施例公开的一种基于集群通信的组播业务实现方法的流程示意图，该方法应用于集群通信系统的网络侧，网络侧是集群通信系统中除UE之外的设备的总称，网络侧已预先建立至少一个公共组播信道，在组播业务开始后，该方法包括如下步骤：
步骤S100：将组播数据通过预先建立的公共组播信道下发至当前组播群组中的UE，并且建立专用组播信道；
组播业务开始阶段，网络侧通过公共组播信道下发组播数据，集群网络中的所有UE都会侦听到公共组播信道中的组播数据，但是只有当前组播群组中的UE侦听到公共组播信道中的组播数据之后才会接收，其他UE不会接收。
当网络侧在通过公共组播信道下发组播数据时，还会建立用于实现当前组播业务的专用组播信道。
步骤S110：在建立完成专用组播信道之后，将所述专用组播信道的启用信息通知给当前组播群组中的UE，并将组播数据通过所述专用组播信道下发至当前组播群组中的UE。
在网络侧建立完成专用组播信道之后，会向当前组播群组中的UE发送专用组播信道的启用消息，并将组播数据通过专用组播信道下发，当前组播群组中的UE接收到专用组播信道的启用消息之后，则从公共组播信道接收组呼数据转换到从专用组播信道接收组播数据。
本实施例提供的基于集群通信的组播业务实现方法，网络侧预先建立公共组播信道，在组播业务实现时，将组播数据先通过公共组播信道下发至当前组播群组中的UE，并且建立专用组播信道，在建立完成专用组播信道之后，将所述专用组播信道的启用信息通知给当前组播群组中的UE，并将组播数据通过所述专用组播信道下发至当前组播群组中的UE。基于上述方法，预先建立各种组播业务都可以使用的公共组播信道，在组播业务开始阶段，使用该公共组播信道传输组播数据，并实时建立针对组播业务的专用组播信道，建好之后，则将组播数据迁移至专用组播信道传输，这种方式即不会占用过多的空口资源又能保证组播业务的时效性。
请参阅附图2，图2为本发明实施例公开的又一种基于集群通信的组播业 务实现方法的流程示意图，该方法应用于集群通信系统的网络侧，该方法包括：
步骤S200：采用演进多媒体多播服务eMBMS技术建立公共组播信道。
步骤S210：基站空口广播所述公共组播信道的信息以使驻留所述基站的UE获取所述公共组播信道的信息。
在一种可实施方式中，公共组播信道的信息包含TMGI(Temporary Mobile Group Identity，临时移动组标识)等信息。
步骤S220：接收组呼发起方UE发送的集群组呼请求；所述组呼发起方UE为所述驻留所述基站的UE中的任意一个UE，所述集群组呼请求中包括所述组呼发起方UE所属的组播群组ID，所述组播群组ID对应的组播群组为当前组播群组。
在一种可实施方式中，组呼发起方UE发送的集群组呼请求包含组呼发起方UE所属的组播群组ID以及组呼类型等信息，组呼类型包含语音类、视频类。
步骤S230：通知所述当前组播群组中的UE接收组播数据。
在一种可实施方式中，网络侧可以通过寻呼的方式通知当前组播群组中的UE接收组播数据。具体的，网络侧直接下发UE寻呼消息，并在UE寻呼消息中携带组播标志，IDLE态UE在接收到UE寻呼消息之后，直接开始接收组播数据。
在又一种可实施方式中，网络侧可以通过单播信令的方式通知当前组播群组中的UE接收组播数据。具体的，网络侧单播寻呼到当前组播群组中IDLE态的UE，当前组播群组中IDLE态的UE在接收到单播寻呼消息之后，进入connected态，网络侧再通过单播NAS信令通知当前组播群组中connected态的UE接收组播数据。具体的信令交互可参见图3所示。
步骤S240：将组播数据通过预先建立的公共组播信道下发至当前组播群组中的UE，同时建立专用组播信道。
步骤S250：在建立完成所述专用组播信道之后，将所述专用组播信道的启用信息通知给所述当前组播群组中的UE，并将组播数据通过所述专用组播信道下发至所述当前组播群组中的UE。
在一种可实施方式中，网络侧可以通过单播信令的方式将所述专用组播信 道启用的信息通知给当前组播群组中的UE。具体的，将所述专用组播信道启用的信息通过单播信令通知当前组播群组中处于connected态的UE。具体的信令交互可参见图4所示。
在又一种可实施方式中，网络侧可以将所述专用组播信道启用的信息通过所述公共组播信道发送至所述当前组播群组中的UE。具体的信令交互可参见图5所示。
在上述实施例的基础上，本发明实施例公开了一种基于集群通信的组播业务实现方法的示例，请参阅附图6，图6为本发明实施例公开的一种基于集群通信的组播业务实现方法的示例的信令交互示意图，在该示例中，LTE网络侧采用eMBMS技术在空口预建立组播通道作为空口公共组播信道，所有驻留该eNB的UE都可以获取公共组播信道的信息。UE2发起集群组呼，网络侧通过寻呼或在单播信令通知到UE作为组呼被叫。呼叫建立初，网络侧建立了从EPC到基站的集群呼叫的传输承载，基站侧空口尚未建立对应的集群组呼专载信道，网络侧的组呼数据在空口通过公共组播信道下发给群组内的UE。在传输组呼数据同时，网络侧完成了这个组呼专用的eMBMS空口组播信道，通知UE，并将网络侧组播的数据流转到专用的空口组播信道发送。停止在公共组播信道上发送组呼数据。
在上述实施例的基础上，本发明实施例公开了一种基于集群通信的组播业务实现方法的示例，请参阅附图7，图7为本发明实施例公开的一种基于集群通信的组播业务实现方法的示例的信令交互示意图，在该示例中，在组呼使用预建立的eMBMS承载传输组数据时，再次向BM-SC请求建立专用的eMBMS承载，接入网络侧在建立eMBMS承载并完成空口信息更新后，BM-SC通过eMBMS承载状态通知消息，通知给GCS AS，GCS AS通过通告流程(24379MBMS bearer announcement procedures或者MAP消息)通知UE更新组播信道。停用预建立的eMBMS承载，启用新的eMBMS承载。其中eMBMS承载信息在空口更新，需要12～22秒(主要是MCCH更新周期协议定了两个枚举值5秒和10秒，空口需要至少提前一个周期通知UE，导致更新时间长)。这个期间可能出现各种异常，如通话结束等等，这里只给出了正常流程，异常流程就不在这里说明。
请参阅附图8，图8为本发明实施例公开的一种基于集群通信的组播业务实现方法的流程示意图，该方法应用于集群通信系统的UE侧，该方法包括如下步骤：
步骤S800：接收网络侧通过预先建立的公共组播信道下发的组播数据；
步骤S810：接收网络侧发送的专用组播信道的启用信息；
步骤S820：接收网络侧通过所述专用组播信道下发的组播数据。
请参阅附图9，图9为本发明实施例公开的一种基于集群通信的组播业务实现装置的结构示意图，该装置应用于集群通信系统的网络侧，网络侧是集群通信系统中除UE之外的设备的总称，网络侧已预先建立至少一个公共组播信道，在组播业务开始后，该装置包括如下单元：
第一发送单元10，用于将组播数据通过预先建立的公共组播信道下发至当前组播群组中的UE；
专用组播信道建立单元11，用于在第一发送单元将组播数据通过预先建立的公共组播信道下发至当前组播群组中的UE时建立专用组播信道；
第一通知单元12，用于在建立完成所述专用组播信道之后，将所述专用组播信道的启用信息通知给所述当前组播群组中的UE；
第二发送单元13，用于将组播数据通过所述专用组播信道下发至所述当前组播群组中的UE。
可选地，所述装置还包括，公共组播信道建立单元，所述公共组播信道建立单元具体用于在所述将组播数据通过预先建立的公共组播信道下发至当前组播群组中的UE之前，采用演进多媒体多播服务eMBMS技术建立公共组播信道；基站空口广播所述公共组播信道的信息以使驻留所述基站的UE获取所述公共组播信道的信息。
可选地，所述装置还包括：
集群组呼请求接收单元，用于接收组呼发起方UE发送的集群组呼请求；所述组呼发起方UE为所述驻留所述基站的UE中的任意一个UE，所述集群组呼请求中包括所述组呼发起方UE所属的组播群组ID，所述组播群组ID对应的组播群组为当前组播群组；
第二通知单元，用于通知所述当前组播群组中的UE接收组播数据。
可选地，所述第二通知单元，具体用于：
通过寻呼的方式通知所述当前组播群组中的UE接收组播数据。
可选地，所述第二通知单元，具体用于：
通过单播信令的方式通知所述当前组播群组中的UE接收组播数据。
可选地，所述第一通知单元，具体用于：
通过单播信令的方式将所述专用组播信道启用的信息通知给当前组播群组中的UE。
可选地，所述第一通知单元，具体用于：
将所述专用组播信道启用的信息通过所述公共组播信道发送至所述当前组播群组中的UE。
需要说明的是，上述各个单元的具体功能实现已在方法实施例中详细说明，本实施例不再赘述。
另外，本发明实施例还公开的一种应用于集群通信系统的UE侧的基于集群通信的组播业务实现装置，该装置包括接收单元，该接收单元具体用于接收网络侧通过预先建立的公共组播信道下发的组播数据；接收网络侧发送的专用组播信道的启用信息；接收网络侧通过所述专用组播信道下发的组播数据。
本发明实施例还提供了一种网络侧设备，网络侧设备包括处理器、存储器及存储在存储器上并可在处理器上运行的程序，处理器执行程序时实现以下步骤：
将组播数据通过预先建立的公共组播信道下发至当前组播群组中的UE，并且建立专用组播信道；
在建立完成所述专用组播信道之后，将所述专用组播信道的启用信息通知给所述当前组播群组中的UE，并将组播数据通过所述专用组播信道下发至所述当前组播群组中的UE。
可选地，在所述将组播数据通过预先建立的公共组播信道下发至当前组播群组中的UE之前，所述方法还包括：
采用演进多媒体多播服务eMBMS技术建立公共组播信道；
基站空口广播所述公共组播信道的信息以使驻留所述基站的UE获取所述公共组播信道的信息。
可选地，所述方法还包括：
接收组呼发起方UE发送的集群组呼请求；所述组呼发起方UE为所述驻留所述基站的UE中的任意一个UE，所述集群组呼请求中包括所述组呼发起方UE所属的组播群组ID，所述组播群组ID对应的组播群组为当前组播群组；
通知所述当前组播群组中的UE接收组播数据。
可选地，所述通知所述当前组播群组中的UE接收组播数据，包括：
通过寻呼的方式通知所述当前组播群组中的UE接收组播数据。
可选地，所述通知所述组播群组ID内的UE接收组播数据，包括：
通过单播信令的方式通知所述当前组播群组中的UE接收组播数据。
可选地，所述将所述专用组播信道启用的信息通知给当前组播群组中的UE，包括：
通过单播信令的方式将所述专用组播信道启用的信息通知给当前组播群组中的UE。
可选地，所述将所述专用组播信道启用的信息通知给当前组播群组中的UE，包括：
将所述专用组播信道启用的信息通过所述公共组播信道发送至所述当前组播群组中的UE。
本发明实施例还提供了一种终端，所述终端包括接收器，所述接收器用于接收网络侧通过预先建立的公共组播信道下发的组播数据；接收网络侧发送的专用组播信道的启用信息；接收网络侧通过所述专用组播信道下发的组播数据。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/ 或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
在一个典型的配置中，计算设备包括一个或多个处理器(CPU)、输入/输出接口、网络接口和内存。
存储器可能包括计算机可读介质中的非永久性存储器，随机存取存储器(RAM)和/或非易失性内存等形式，如只读存储器(ROM)或闪存(flash RAM)。存储器是计算机可读介质的示例。
计算机可读介质包括永久性和非永久性、可移动和非可移动媒体可以由任何方法或技术来实现信息存储。信息可以是计算机可读指令、数据结构、程序的模块或其他数据。计算机的存储介质的例子包括，但不限于相变内存(PRAM)、静态随机存取存储器(SRAM)、动态随机存取存储器(DRAM)、其他类型的随机存取存储器(RAM)、只读存储器(ROM)、电可擦除可编程只读存储器(EEPROM)、快闪记忆体或其他内存技术、只读光盘只读存储器(CD-ROM)、数字多功能光盘(DVD)或其他光学存储、磁盒式磁带，磁带磁磁盘存储或其他磁性存储设备或任何其他非传输介质，可用于存储可以被计算设备访问的信息。按照本文中的界定，计算机可读介质不包括暂存电脑可读媒体(transitory media)，如调制的数据信号和载波。
还需要说明的是，术语“包括”、“包含”或者其任何其他变体意在涵盖非 排他性的包含，从而使得包括一系列要素的过程、方法、商品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、商品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括要素的过程、方法、商品或者设备中还存在另外的相同要素。
本领域技术人员应明白，本申请的实施例可提供为方法、系统或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
以上仅为本申请的实施例而已，并不用于限制本申请。对于本领域技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原理之内所作的任何修改、等同替换、改进等，均应包含在本申请的权利要求范围之内。

Claims (18)

  1. 一种基于集群通信的组播业务实现方法，其特征在于，所述方法包括：
    将组播数据通过预先建立的公共组播信道下发至当前组播群组中的UE，并且建立专用组播信道；
    在建立完成所述专用组播信道之后，将所述专用组播信道的启用信息通知给所述当前组播群组中的UE，并将组播数据通过所述专用组播信道下发至所述当前组播群组中的UE。
  2. 根据权利要求1所述的方法，其特征在于，在所述将组播数据通过预先建立的公共组播信道下发至当前组播群组中的UE之前，所述方法还包括：
    采用演进多媒体多播服务eMBMS技术建立公共组播信道；
    基站空口广播所述公共组播信道的信息以使驻留所述基站的UE获取所述公共组播信道的信息。
  3. 根据权利要求2所述的方法，其特征在于，所述方法还包括：
    接收组呼发起方UE发送的集群组呼请求；所述组呼发起方UE为所述驻留所述基站的UE中的任意一个UE，所述集群组呼请求中包括所述组呼发起方UE所属的组播群组ID，所述组播群组ID对应的组播群组为当前组播群组；
    通知所述当前组播群组中的UE接收组播数据。
  4. 根据权利要求3所述的方法，其特征在于，所述通知所述当前组播群组中的UE接收组播数据，包括：
    通过寻呼的方式通知所述当前组播群组中的UE接收组播数据。
  5. 根据权利要求3所述的方法，其特征在于，所述通知所述组播群组ID内的UE接收组播数据，包括：
    通过单播信令的方式通知所述当前组播群组中的UE接收组播数据。
  6. 根据权利要求1所述的方法，其特征在于，所述将所述专用组播信道启用的信息通知给当前组播群组中的UE，包括：
    通过单播信令的方式将所述专用组播信道启用的信息通知给当前组播群组中的UE。
  7. 根据权利要求1所述的方法，其特征在于，所述将所述专用组播信道启用的信息通知给当前组播群组中的UE，包括：
    将所述专用组播信道启用的信息通过所述公共组播信道发送至所述当前组播群组中的UE。
  8. 一种基于集群通信的组播业务实现方法，其特征在于，所述方法包括：
    接收网络侧通过预先建立的公共组播信道下发的组播数据；
    接收网络侧发送的专用组播信道的启用信息；
    接收网络侧通过所述专用组播信道下发的组播数据。
  9. 一种基于集群通信的组播业务实现装置，其特征在于，所述装置包括：
    第一发送单元，用于将组播数据通过预先建立的公共组播信道下发至当前组播群组中的UE；
    专用组播信道建立单元，用于在第一发送单元将组播数据通过预先建立的公共组播信道下发至当前组播群组中的UE时建立专用组播信道；
    第一通知单元，用于在建立完成所述专用组播信道之后，将所述专用组播信道的启用信息通知给所述当前组播群组中的UE；
    第二发送单元，用于将组播数据通过所述专用组播信道下发至所述当前组播群组中的UE。
  10. 根据权利要求9所述的装置，其特征在于，所述装置还包括，公共组播信道建立单元，所述公共组播信道建立单元具体用于在所述将组播数据通过预先建立的公共组播信道下发至当前组播群组中的UE之前，采用演进多媒体多播服务eMBMS技术建立公共组播信道；基站空口广播所述公共组播信道的信息以使驻留所述基站的UE获取所述公共组播信道的信息。
  11. 根据权利要求10所述的装置，其特征在于，所述装置还包括：
    集群组呼请求接收单元，用于接收组呼发起方UE发送的集群组呼请求；所述组呼发起方UE为所述驻留所述基站的UE中的任意一个UE，所述集群组呼请求中包括所述组呼发起方UE所属的组播群组ID，所述组播群组ID对应的组播群组为当前组播群组；
    第二通知单元，用于通知所述当前组播群组中的UE接收组播数据。
  12. 根据权利要求11所述的装置，其特征在于，所述第二通知单元，具体用于：
    通过寻呼的方式通知所述当前组播群组中的UE接收组播数据。
  13. 根据权利要求11所述的装置，其特征在于，所述第二通知单元，具体用于：
    通过单播信令的方式通知所述当前组播群组中的UE接收组播数据。
  14. 根据权利要求9所述的装置，其特征在于，所述第一通知单元，具体用于：
    通过单播信令的方式将所述专用组播信道启用的信息通知给当前组播群组中的UE。
  15. 根据权利要求9所述的装置，其特征在于，所述第一通知单元，具体用于：
    将所述专用组播信道启用的信息通过所述公共组播信道发送至所述当前组播群组中的UE。
  16. 一种基于集群通信的组播业务实现装置，其特征在于，所述装置包括：
    接收单元，用于接收网络侧通过预先建立的公共组播信道下发的组播数据；接收网络侧发送的专用组播信道的启用信息；接收网络侧通过所述专用组播信道下发的组播数据。
  17. 一种网络侧设备，其特征在于，所述网络侧设备包括处理器、存储器及存储在存储器上并可在处理器上运行的程序，所述处理器执行程序时实现权利要求1至7中任意一项所述的基于集群通信的组播业务实现方法。
  18. 一种终端，其特征在于，所述终端包括接收器，所述接收器用于接收网络侧通过预先建立的公共组播信道下发的组播数据；接收网络侧发送的专用组播信道的启用信息；接收网络侧通过所述专用组播信道下发的组播数据。
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