WO2018129641A1 - 一种集群系统的通信方法、装置及基站 - Google Patents

一种集群系统的通信方法、装置及基站 Download PDF

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Publication number
WO2018129641A1
WO2018129641A1 PCT/CN2017/070691 CN2017070691W WO2018129641A1 WO 2018129641 A1 WO2018129641 A1 WO 2018129641A1 CN 2017070691 W CN2017070691 W CN 2017070691W WO 2018129641 A1 WO2018129641 A1 WO 2018129641A1
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Prior art keywords
group
user terminal
base station
correspondence
multicast data
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PCT/CN2017/070691
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English (en)
French (fr)
Inventor
赵金奎
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海能达通信股份有限公司
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Application filed by 海能达通信股份有限公司 filed Critical 海能达通信股份有限公司
Priority to PCT/CN2017/070691 priority Critical patent/WO2018129641A1/zh
Publication of WO2018129641A1 publication Critical patent/WO2018129641A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/08—User group management

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a communication method, apparatus, and base station for a cluster system.
  • the LTE network coverage is divided into many TAs (Tracking). Area, tracking area), a TA can contain one or more cells, multiple TAs form a TA list (TA List), and are assigned to one UE (User Equipment, user terminal). The UE does not need to perform TA update when moving within the TA List (TAU, Tracking Area) Update) to reduce frequent interaction with the network.
  • TAs Tracking Area
  • TAU Tracking Area
  • the core network When the UE needs to be paged, the core network will be in the TA. A paging message is sent to the UE in the cell included in the List.
  • the cluster paging is initiated, and then the group call data of the group is delivered.
  • the relevant base station broadcasts the group call data of the group in the local cell. If the user terminal of the group exists in the cell, the air interface at this time Resources are effectively occupied.
  • the object of the present invention is to provide a communication method, device and base station for a cluster system, which effectively improve the spectrum utilization, in response to the problem of waste of air interface resources caused by initiating a cluster group call in the prior art, thereby reducing the spectrum utilization rate of the system. rate.
  • the technical solution adopted by the present invention to solve the above technical problem is to provide a communication method of a cluster system, including: when a base station identifies a user terminal related to a group in a cell that identifies the base station, the base station establishes the group and Corresponding relationship between the related user terminals; when receiving group call/multicast data of a group sent by the core network, scheduling the group call/multicast data to the group according to the correspondence relationship The corresponding user terminal of the group.
  • the base station After the establishing the correspondence between the group and the related user terminal, the base station includes: maintaining, by the base station, a user terminal that establishes a corresponding relationship in a connected state;
  • the scheduling, by the base station, the group call/multicast data includes: acquiring, by the base station, a channel condition of a user terminal that is maintained in a connected state; and determining, according to the channel condition, a modulation and coding manner used for scheduling the group call/multicast data. And scheduling the group call/multicast data according to the determined modulation and coding manner; wherein the channel condition includes a reference signal received power included in a channel quality condition/measurement report reported by the user terminal.
  • the scheduling, by the base station, the group call/multicast data further includes: acquiring, by the base station, a user location of a user terminal that is maintained in a connected state; and determining, by using the user location, a resource block used for scheduling the group call/multicast data.
  • the group call/multicast data is scheduled to be scheduled; wherein the user location is a location of the user terminal determined by the base station according to the measurement report reported by the user terminal in the cell.
  • the establishing a correspondence between the group and the related user terminal includes: receiving group information reported by the user terminal; establishing between the group corresponding to the group information of the user terminal Correspondence relationship.
  • the receiving the group information reported by the user terminal includes: the base station broadcasting a cluster paging message including the group information on the cluster paging channel; and the receiving user terminal determining the self and the cluster paging message The group information carried in the cluster paging message reported when the group information is related.
  • the receiving the group information reported by the user terminal includes: receiving, by the base station, a measurement report message reported by the user terminal, and acquiring group information carried in the measurement report message.
  • the method further includes: when detecting that the user terminal that has established the corresponding relationship is in a disconnected state, the base station will release the Correspondence between the user terminal in the off-network state and the group.
  • the method further includes: when identifying that the user terminal that has established the corresponding relationship with the group is related to another group, Dissolving the correspondence between the identified user terminal and the group, and establishing a correspondence between the identified user terminal and the another group, where the another group The priority is higher than or equal to the priority of the group.
  • a communication device of a cluster system comprising: an establishing module, when a user terminal related to a group exists in a cell that identifies the base station, Establishing a correspondence between the group and the related user terminal; and a scheduling module, configured to: according to the corresponding relationship scheduling, when receiving group call/multicast data of a group sent by the core network The group call/multicast data is described to the user terminal corresponding to the group.
  • a base station including a processor, a receiver, a transmitter and a memory; the memory is configured to store computer instructions configured to be executed by the processor
  • the processor executes the computer instruction to: establish a correspondence between the group and the related user terminal when a user terminal related to a group exists in a cell that identifies the base station And when the receiver receives the group call/multicast data of a group sent by the core network, scheduling the group call/multicast data according to the correspondence, and sending the group call/multicast data to the User terminal corresponding to the group.
  • the processor After the processor performs the establishing the correspondence between the group and the related user terminal, the processor includes: the processor keeps the user terminal that establishes the corresponding relationship in a connected state;
  • the performing, by the processor, the scheduling of the group call/multicast data specifically: acquiring a channel condition of the user terminal that is maintained in a connected state; determining, according to the channel condition, scheduling the group call/multicast data The modulation and coding mode is adopted; the group call/multicast data is scheduled according to the determined modulation and coding mode; wherein the channel condition includes a reference signal received power included in a channel quality condition/measurement report reported by the user terminal.
  • the performing, by the processor, the establishing the correspondence between the group and the related user terminal specifically: receiving, by the receiver, group information reported by the user terminal; establishing the user terminal and Correspondence between groups corresponding to the group information.
  • the performing, by the processor, the receiving, by the receiver, the group information reported by the user terminal comprising: broadcasting a cluster paging message including group information on a cluster paging channel; receiving the user terminal by using the receiver The group information carried in the cluster paging message reported when it is determined to be related to the group information in the cluster paging message.
  • the processor performs the receiving, by the receiver, the group information reported by the user terminal, where the processor receives the measurement report message reported by the user terminal by using the receiver, and acquires the measurement report message. Group information carried in.
  • the processor further includes: when detecting that the user terminal that has established the corresponding relationship is in a disconnected state, the processor The correspondence between the user terminal in the off-network state and the group is released.
  • the processor further includes: identifying the user terminal and another group that have established a correspondence with the group Correlatively, the correspondence between the identified user terminal and the group is released, and a correspondence between the identified user terminal and the another group is established, wherein the another The priority of the group is higher than or equal to the priority of the group.
  • the beneficial effects of the present invention are: when the base station identifies the user terminal related to the group, the base station establishes a correspondence between the user terminal and the group, and when the group call/multicast data is delivered, the group call is scheduled according to the corresponding relationship.
  • /Multicast data solves the problem of waste of spectrum resources caused by the inability to determine the location of the user terminal included in the group corresponding to the group call/multicast data, and improves spectrum utilization.
  • FIG. 1 is a schematic structural diagram of an embodiment of a communication system used in the present invention.
  • FIG. 2 is a flow chart showing an embodiment of a communication method of a cluster system according to the present invention
  • FIG. 3 is a schematic structural diagram of an embodiment of a communication device of a cluster system according to the present invention.
  • FIG. 4 is a schematic structural diagram of an embodiment of a base station according to the present invention.
  • FIG. 1 it is a schematic structural diagram of an embodiment of a communication system used in the present invention.
  • the LTE cluster private network is taken as an example, and the communication system 10 is an LTE broadband trunking communication system, including multiple user terminals 11-15 and multiple.
  • Base stations 16-18 and core network 19 The user terminal 11-15 is connected to the core network 19 via the IP transmission network 20 through the base station 16-18.
  • the core network 19 is used for mobility management and call management, for example, issuing group call/multicast data.
  • a plurality of user terminals 12-14 belong to a cluster group A, and a plurality of user terminals 12-14 perform cluster communication through the base stations 16, 17 and the core network 19, for example, group call service, multicast service, and the like.
  • the user terminal 12 initiates the cluster group call of the cluster group A
  • the user terminal 12 sends the group call data to the core network 19 through the base station 16.
  • the base station 17 has the cluster group A and the user terminal 13,
  • the correspondence between the 14 is the user terminal list of the cluster group A in the base station 17, and the user terminal list is not empty at this time.
  • the core network 19 delivers the group call data to the base station 17, the base station 17
  • the group call data is scheduled to the user terminals 13, 14.
  • the base station 18 has the user terminal 15, and the user terminal 15 does not belong to the cluster group A. Further, the base station 18 does not have the user terminal in the cluster group A, that is, the user terminal list of the cluster group A set in the base station 18 is Empty, at this time, the base station 18 does not schedule group call data. In this way, the waste of system air interface resources is reduced, and spectrum utilization is improved.
  • the base stations 16 and 17 include not only the cluster group A but also other cluster groups, that is, the base stations 16 and 17 may have multiple cluster groups, that is, the base stations 16 and 17. There are other user terminals under the cell.
  • the base station 16 further includes the cluster group B and the like. If the user terminal 11 belongs to the cluster group B, the base station 16 has a correspondence between the user terminal 11 and the cluster group B, and the cluster group B is delivered in the core network 19. When the group calls or multicasts data, the base station 16 schedules the group call or multicast data to the user terminal 11 according to the correspondence.
  • the communication network where the user terminal of the present invention is located is not limited to an LTE cluster private network, and in other embodiments, may be any wireless communication network.
  • the base station 16 in this embodiment has a correspondence relationship between the user terminal 11 and the cluster group B
  • the base station 17 has a correspondence relationship between the cluster group A and the user terminals 13 and 14. example.
  • FIG. 2 it is a flowchart of an embodiment of a communication method of a cluster system according to the present invention.
  • the communication method is performed by the base station in FIG. 1 above, and includes the following steps:
  • Step S202 When the base station identifies a user terminal related to the group in the cell that identifies the base station, the base station establishes a correspondence between the group and the related user terminal.
  • step S202 when there is a user terminal related to a certain group in the cell of the base station, the correspondence between the group and the related user terminal is established, and the base station can identify itself according to the manner reported by the user terminal. If the cell has a user terminal associated with the group, the step S202 includes: first, the base station receives the group information reported by the user terminal, and then establishes a correspondence between the user terminal and the group corresponding to the group information. relationship.
  • the group information includes but is not limited to a TGID (Trunking Group ID).
  • the base station receives the group information reported by the user terminal, and can identify the group-related user terminal corresponding to the group information. Specifically, in one embodiment, the base station receives the group information reported by the user terminal, including First, the base station broadcasts a cluster paging message including group information on the cluster paging channel; then, the base station receives the cluster paging message reported by the user terminal when determining that it is related to the group information in the cluster paging message. Group information to carry. After the base station broadcasts the cluster paging message, the user terminal receives the cluster paging message, and if the cluster paging message is interested in itself, it determines that it is related to the group information in the cluster paging message.
  • the user terminal reports the group information to the base station, wherein if the user terminal is in the connected state (RRC_CONNECTED state), the user terminal reports the group information to the base station through the allocated channel, and if the user terminal is idle The state (RRC_IDLE state), the user terminal reports the group information to the base station by means of initiating random access.
  • RRC_CONNECTED state if the user terminal is in the connected state
  • RRC_IDLE state the user terminal reports the group information to the base station by means of initiating random access.
  • the base station broadcasts the cluster paging message because one user terminal belonging to one cluster group initiates a cluster group call, and further, the cluster paging message includes group information corresponding to the cluster group call.
  • the receiving, by the base station, the group information reported by the user terminal includes: receiving, by the base station, the measurement report message reported by the user terminal, and acquiring the group information carried in the measurement report message.
  • the base station receives the group information reported by the user terminal, and further identifies the group related user terminal corresponding to the group information.
  • the base station may also identify a group related to the user terminal through a private interface between itself and the core network, which is not described herein within the scope of those skilled in the art.
  • Step S204 When receiving group call/multicast data of a group delivered by the core network, scheduling group call/multicast data to the user terminal corresponding to the group according to the corresponding relationship.
  • step S204 after the correspondence between the user terminal and the group is established in the foregoing step S202, the core network sends the group call/multicast data of the group, and the base station receives the group call/group.
  • Broadcast data the group call/multicast data is scheduled according to the established correspondence to the user terminal corresponding to the group.
  • the scheduling, by the base station, the group call/multicast data to the user terminal corresponding to the group according to the corresponding relationship includes: determining whether there is a correspondence between groups of group call/multicast data; if yes, the base station The group call/multicast data is scheduled to the user terminal corresponding to the group; if not, the base station does not schedule the group call/multicast data.
  • the base station when the base station identifies the user terminal related to the group, the base station establishes a correspondence between the user terminal and the group, and when the group call/multicast data is delivered, the group call is scheduled according to the corresponding relationship.
  • /Multicast data solves the problem of waste of spectrum resources caused by the inability to determine the location of the user terminal included in the group corresponding to the group call/multicast data, and improves spectrum utilization.
  • the base station keeps the user terminal that establishes the corresponding relationship in the RRC_CONNECTED state. At this time, the base station can obtain the channel condition of the user terminal.
  • the scheduling group calls/multicasts data to the user terminal corresponding to the group, so that the base station can adaptively adopt an appropriate modulation and coding mode based on comprehensive consideration of the channel conditions of the user terminal, thereby further improving the spectrum utilization rate of the system.
  • the base station scheduling the group call/multicast data includes: first, acquiring a channel condition of the user terminal maintained in the connected state, and then determining the scheduling group call/multicast data according to the channel condition.
  • the modulation coding method used, and then the group call/multicast data is scheduled according to the determined modulation and coding mode.
  • the channel condition includes the reference signal received power included in the channel quality status/measurement report reported by the user terminal.
  • the base station selects a relatively low modulation and coding mode in the channel state of the user terminal that is not participating in the group call in the cell, and the base station determines the modulation code used to schedule the group call data according to the channel condition of the user terminal. In this way, the adaptive adjustment coding mode can be implemented.
  • the modulation and coding mode is determined according to the channel condition of the user terminal, which greatly improves the system spectrum utilization.
  • the base station may also first acquire the user location of the user terminal that remains in the connected state, and then determine the resource block (RB, Resource) for scheduling the group call/multicast data according to the user location. Block) to schedule group call/multicast data. For example, the base station acquires the user location of the multiple user terminals that remain in the connected state. If the user location of the multiple user terminals meets a certain policy, the base resource is selected to perform scheduling group call/multicast data, and if the other meets the other In the case of the policy, the scheduling group call/multicast data is selected at the edge resource.
  • the user location is a location of the user terminal determined by the base station in the cell according to the measurement report reported by the user terminal.
  • the step S202 further includes: when detecting that the user terminal that has established the corresponding relationship is in the off-network state, the base station will cancel the off-network state.
  • the correspondence between the user terminal and the group In this way, the base station updates the correspondence between the user terminal and the group in real time, and when the group call/multicast data is delivered, it is convenient to schedule the group call/multicast data according to the corresponding relationship, thereby improving spectrum utilization.
  • the method further includes: disabling the identification when the user terminal that has established the corresponding relationship with the group is associated with another group Corresponding relationship between the user terminal and the group, and establishing a correspondence between the identified user terminal and another group, wherein the priority of the other group is higher than or equal to the priority of the group.
  • Establishing the corresponding relationship between the identified user terminal and another group is the same as the correspondence between the group and the related user terminal in step S202, and is not described in the scope of understanding by those skilled in the art. .
  • FIG. 3 it is a schematic structural diagram of an embodiment of a communication device of a cluster system of the present invention.
  • the communication device 300 of the cluster system is used for a base station, and includes a setup module 310 and a scheduling module 320.
  • the establishing module 310 is configured to establish a correspondence between the group and the related user terminal when the user terminal related to the group exists in the cell that identifies the base station;
  • the scheduling module 320 is configured to, when receiving the group call/multicast data of a group sent by the core network, schedule the group call/multicast data to the user terminal corresponding to the group according to the corresponding relationship.
  • the establishing module 310 is specifically configured to receive the group information reported by the user terminal, and establish a correspondence between the user terminal and the group corresponding to the group information.
  • the establishing module 310 is further configured to: when detecting that the user terminal that has established the corresponding relationship is in the off-network state, The correspondence between the user terminal and the group in the off-network state is released.
  • the establishing module 310 is further configured to identify the user terminal that has established the corresponding relationship with the group and another When a group is related, the corresponding relationship between the identified user terminal and the group is released, and the corresponding relationship between the identified user terminal and another group is established, wherein the priority of the other group is higher than Or equal to the priority of the group.
  • the scheduling module 320 is specifically configured to determine whether there is a correspondence between groups of group call/multicast data; if yes, the scheduling module 320 schedules group call/multicast data to the user terminal corresponding to the group; The scheduling module 320 does not schedule group call/multicast data.
  • the scheduling module 320 schedules the group call/
  • the multicast data specifically includes: firstly, acquiring a channel condition of the user terminal maintained in the connected state, and then determining, according to the channel condition, a modulation and coding mode used for scheduling the group call/multicast data, and then scheduling the group according to the determined modulation and coding mode.
  • the channel condition includes the reference signal received power included in the channel quality status/measurement report reported by the user terminal.
  • the modules of the foregoing apparatus may be correspondingly used to perform the steps in the foregoing method embodiments.
  • FIG. 4 it is a schematic structural diagram of an embodiment of a base station according to the present invention.
  • the base station in this embodiment is a base station in FIG. 1, for example, a base station 16, or a base station 17, or a base station 18, and the base station includes a receiver 410.
  • the receiver 410 is configured to receive a message sent by an external device, for example, a group message reported by the user terminal, a group call/multicast data sent by a core network, and the like.
  • the transmitter 420 is configured to send a message to an external device, for example, scheduled group call/multicast data, and the like.
  • Memory 440 is used to store computer instructions that are configured to be executed by processor 430, as well as data that needs to be saved or cached during operation of processor 430.
  • the processor 430 is configured to execute by calling a computer instruction stored in the memory 440:
  • the receiver 410 When the receiver 410 receives the group call/multicast data of a group delivered by the core network, the group call/multicast data is scheduled according to the corresponding relationship, and then sent to the user terminal corresponding to the group by the transmitter 420.
  • the processor 430 performs the correspondence between the group and the related user terminal, including: receiving, by the receiver 410, group information reported by the user terminal; and establishing a group corresponding to the group information of the user terminal. Correspondence between the two.
  • the processor 430 after the processor 430 performs the correspondence between the group and the related user terminal, the processor 430 further performs the off-network state when detecting that the user terminal that has established the corresponding relationship is in the off-network state. The correspondence between the user terminal and the group.
  • the processor 430 after performing the correspondence between the establishing group and the related user terminal, the processor 430 further performs the identifying the user terminal and the other group that have established the corresponding relationship with the group. Correlation, the corresponding relationship between the identified user terminal and the group is released, and the correspondence between the identified user terminal and another group is established, wherein the priority of the other group is higher than or equal to the group The priority of the group.
  • the processor 430 performs scheduling of the group call/multicast data according to the corresponding relationship, and then sends the message to the user terminal corresponding to the group by using the transmitter 420, including: determining whether there is a corresponding relationship of the group of the group call/multicast data; If yes, the group call/multicast data is scheduled, and then sent to the user terminal corresponding to the group by the transmitter 420; if not, the group call/multicast data is not scheduled.
  • the processor 430 further performs the RRC_CONNECTED state of the user terminal that establishes the corresponding relationship, and at this time, the processor 430 performs scheduling group call/multicast.
  • the data includes: first acquiring a channel condition of the user terminal maintained in the connected state, and then determining, according to the channel condition, a modulation and coding mode used for scheduling the group call/multicast data, and then scheduling the group call/multicast according to the determined modulation and coding mode. data.
  • the channel condition includes the reference signal received power included in the channel quality status/measurement report reported by the user terminal. Further, the processor 430 instructs the transmitter 420 to transmit the scheduled group call/multicast data to the user terminal corresponding to the group.
  • the base station when the base station identifies the user terminal related to the group, the base station establishes a correspondence between the user terminal and the group, and when the group call/multicast data is delivered, the group call/group is scheduled according to the corresponding relationship.
  • the data is broadcasted to solve the problem of waste of spectrum resources caused by the inability to determine the location of the user terminal included in the group corresponding to the group call/multicast data, thereby improving spectrum utilization.

Abstract

本发明公开一种集群系统的通信方法，包括：基站在识别到所述基站的小区中存在与群组相关的用户终端时，建立所述群组与所述相关的用户终端之间的对应关系；在接收到核心网下发的一个群组的组呼/组播数据时，根据所述对应关系调度所述组呼/组播数据至所述群组对应的用户终端。本发明还公开对应的集群系统的通信装置及基站。本发明解决由于无法确定组呼/组播数据对应的群组中包含的用户终端的位置而导致的频谱资源浪费的问题，提高频谱利用率。

Description

一种集群系统的通信方法、装置及基站
【技术领域】
本发明涉及通信技术领域，尤其涉及一种集群系统的通信方法、装置及基站。
【背景技术】
随着无线通信技术的发展，频谱资源变得越来越紧张，例如，在LTE（Long Term Evolution，长期演进）集群专网中，由于集群组呼等集群特性，采用多播广播的方式传输语音、图像、视频等多媒体业务，需要占用更多的系统带宽，使得频谱资源更加紧张，因此，如何最大化利用频谱资源成为一重要问题。
其中，在LTE技术中，LTE网络覆盖区分为许多个TA(Tracking Area，跟踪区)，一个TA可包含一个或多个小区，多个TA组成一个TA列表(TA List)，同时分配给一个UE(User Equipment，用户终端)。该UE在该TA List内移动时不需要执行TA更新(TAU，Tracking Area Update)，以减少与网络的频繁交互。
当需要寻呼该UE时，核心网会在TA List所包含的小区内向该UE发送寻呼消息。但是，当用户发起一个集群组呼时，会在事先配置的一个或多个TA List下的多个小区中发起集群寻呼，然后下发该群组的组呼数据，当接收组呼数据的小区不存在该群组的用户时，导致系统空口资源的浪费，尤其当组呼业务为视频组呼时，系统空口资源的浪费更为明显；同时，相关基站会将该群组的组呼数据在本小区内广播，若本小区内存在该群组的用户终端，此时空口资源才被有效占用。
【发明内容】
本发明的目的在于，针对现有技术中的发起集群组呼而导致的空口资源浪费，进而降低系统频谱利用率的问题，提供一种集群系统的通信方法、装置及基站，有效提高频谱利用率。
本发明解决上述技术问题所采用的技术方案是提供了一种集群系统的通信方法，包括：基站在识别到所述基站的小区中存在与群组相关的用户终端时，建立所述群组与所述相关的用户终端之间的对应关系；在接收到核心网下发的一个群组的组呼/组播数据时，根据所述对应关系调度所述组呼/组播数据至所述群组对应的用户终端。
其中，所述建立所述群组与所述相关的用户终端之间的对应关系之后，包括：所述基站将建立对应关系的用户终端保持在连接状态；
所述基站调度所述组呼/组播数据包括：所述基站获取保持在连接状态的用户终端的信道条件；根据所述信道条件确定调度所述组呼/组播数据所采用的调制编码方式；根据确定的调制编码方式调度所述组呼/组播数据；其中，所述信道条件包括所述用户终端上报的信道质量状况/测量报告中包含的参考信号接收功率。
其中，所述基站调度所述组呼/组播数据还包括：所述基站获取保持在连接状态的用户终端的用户位置；根据用户位置确定调度所述组呼/组播数据所采用的资源块以进行调度所述组呼/组播数据；其中，所述用户位置为所述基站根据用户终端上报的测量报告而确定的用户终端在小区中的位置。
其中，所述建立所述群组与所述相关的用户终端之间的对应关系包括：接收用户终端上报的群组信息；建立所述用户终端与所述群组信息对应的群组之间的对应关系。
其中，所述接收用户终端上报的群组信息，包括：所述基站在集群寻呼信道上广播包含群组信息的集群寻呼消息；接收用户终端在确定自身与所述集群寻呼消息中的群组信息相关时所上报的所述集群寻呼消息中携带的群组信息。
其中，所述接收用户终端上报的群组信息，包括：所述基站接收用户终端上报的测量报告消息，并获取所述测量报告消息中携带的群组信息。
其中，在所述建立所述群组与所述相关的用户终端之间的对应关系之后，还包括：在检测到已建立对应关系的用户终端处于脱网状态时，所述基站将解除所述脱网状态的用户终端与所述群组之间的对应关系。
其中，在所述建立所述群组与所述相关的用户终端之间的对应关系之后，还包括：在识别到已与所述群组建立对应关系的用户终端与另一群组相关时，解除所述识别到的用户终端与所述群组之间的对应关系，并建立所述识别到的用户终端与所述另一群组之间的对应关系，其中，所述另一群组的优先级高于或等于所述群组的优先级。
本发明解决上述技术问题所采用的另一个技术方案是提供了一种集群系统的通信装置，包括：建立模块，用于在识别到所述基站的小区中存在与群组相关的用户终端时，建立所述群组与所述相关的用户终端之间的对应关系；调度模块，用于在接收到核心网下发的一个群组的组呼/组播数据时，根据所述对应关系调度所述组呼/组播数据至所述群组对应的用户终端。
本发明解决上述技术问题所采用的另一技术方案是提供了一种基站，包括处理器、接收器、发送器及存储器；所述存储器用于存储被配置为被所述处理器执行的计算机指令；所述处理器执行所述计算机指令，用于：在识别到所述基站的小区中存在与群组相关的用户终端时，建立所述群组与所述相关的用户终端之间的对应关系；在所述接收器接收到核心网下发的一个群组的组呼/组播数据时，根据所述对应关系调度所述组呼/组播数据，进而通过所述发送器发送至所述群组对应的用户终端。
其中，所述处理器执行所述建立所述群组与所述相关的用户终端之间的对应关系之后，包括：所述处理器将建立对应关系的用户终端保持在连接状态；
所述处理器执行所述调度所述组呼/组播数据，具体包括：获取保持在连接状态的所述用户终端的信道条件；根据所述信道条件确定调度所述组呼/组播数据所采用的调制编码方式；根据确定的调制编码方式调度所述组呼/组播数据；其中，所述信道条件包括所述用户终端上报的信道质量状况/测量报告中包含的参考信号接收功率。
其中，所述处理器执行所述建立所述群组与所述相关的用户终端之间的对应关系，具体包括：通过所述接收器接收用户终端上报的群组信息；建立所述用户终端与所述群组信息对应的群组之间的对应关系。
其中，所述处理器执行所述通过所述接收器接收用户终端上报的群组信息，包括：在集群寻呼信道上广播包含群组信息的集群寻呼消息；通过所述接收器接收用户终端在确定自身与所述集群寻呼消息中的群组信息相关时所上报的所述集群寻呼消息中携带的群组信息。
其中，所述处理器执行所述通过所述接收器接收用户终端上报的群组信息，包括：所述处理器通过所述接收器接收用户终端上报的测量报告消息，并获取所述测量报告消息中携带的群组信息。
其中，所述处理器在执行建立所述群组与所述相关的用户终端之间的对应关系之后，还包括：在检测到已建立对应关系的用户终端处于脱网状态时，所述处理器将解除所述脱网状态的用户终端与所述群组之间的对应关系。
其中，所述处理器在执行建立所述群组与所述相关的用户终端之间的对应关系之后，还包括：在识别到已与所述群组建立对应关系的用户终端与另一群组相关时，解除所述识别到的用户终端与所述群组之间的对应关系，并建立所述识别到的用户终端与所述另一群组之间的对应关系，其中，所述另一群组的优先级高于或等于所述群组的优先级。
本发明的有益效果有：基站在识别到与群组相关的用户终端，则建立用户终端与群组之间的对应关系，在组呼/组播数据被下发时，根据对应关系调度组呼/组播数据，解决由于无法确定组呼/组播数据对应的群组中包含的用户终端的位置而导致的频谱资源浪费的问题，提高频谱利用率。
【附图说明】
下面将结合附图及实施方式对本发明作进一步说明，附图中：
图1是本发明所采用的通信系统一实施例的结构示意图；
图2是本发明的集群系统的通信方法一实施例的流程图；
图3是本发明的集群系统的通信装置一实施例的结构示意图；
图4是本发明的基站一实施例的结构示意图。
【具体实施方式】
为使本领域的技术人员更好地理解本发明的技术方案，下面结合附图和具体实施方式对本发明的技术方案做进一步详细描述。
为便于理解本发明，先对本发明所采用的通信系统进行说明。
如图1所示，是本发明所采用的通信系统一实施例的结构示意图，以LTE集群专网为例，通信系统10为LTE宽带集群通信系统，包括多个用户终端11-15、多个基站16-18和核心网19。其中，用户终端11-15通过基站16-18经过IP传输网络20与核心网19连接，核心网19用于移动性管理和呼叫管理，例如，下发组呼/组播数据。
假设，多个用户终端12-14属于一集群组A，则多个用户终端12-14之间通过基站16、17和核心网19进行集群通信，例如，组呼业务、组播业务等。例如，若用户终端12发起该集群组A的集群组呼，用户终端12通过基站16将组呼数据发送至核心网19，此时，基站17存在该集群组A与用户终端13、14之间的对应关系，即基站17内设置有该集群组A的用户终端列表，而该用户终端列表此时不为空，核心网19将组呼数据下发到基站17后，基站17将组呼数据调度到用户终端13、14。基站18存在用户终端15，而用户终端15不属于该集群组A，进而基站18不存在该集群组A内的用户终端，即基站18内设置的该集群组A的用户终端列表为空，此时，基站18不调度组呼数据。这样，降低系统空口资源的浪费，提高频谱利用率。
值得注意的是，本实施例中，基站16、17不仅包括集群组A，也可以包括其他集群组，即，基站16、17可以存在多个集群组，也即基站16、17的小区下存在其他用户终端。例如基站16还包括集群组B等，假如用户终端11属于集群组B，则基站16存在用户终端11与集群组B之间的对应关系，在核心网19下发集群组B的组呼或者组播数据时，基站16根据此对应关系将组呼或者组播数据调度到用户终端11。
另外，本发明的用户终端所在的通信网络不限为LTE集群专网，在其他实施例中，可以为任意无线通信网络。
具体地，本实施例中的基站16存在用户终端11与集群组B之间的对应关系，以及基站17存在该集群组A与用户终端13、14之间的对应关系，可参考如下实施例。
如图2所示，是本发明的集群系统的通信方法一实施例的流程图，该通信方法由上述图1中的基站执行，包括以下步骤：
步骤S202：基站在识别到基站的小区中存在与群组相关的用户终端时，建立群组与相关的用户终端之间的对应关系。
在步骤S202中，在基站的小区中存在与某个群组相关的用户终端时，则建立该群组与该相关的用户终端之间的对应关系，基站可根据用户终端上报的方式来识别自身的小区是否存在与群组相关的用户终端，具体地，步骤S202包括：首先，基站接收用户终端上报的群组信息，随后，建立该用户终端与该群组信息对应的群组之间的对应关系。其中，群组信息包括但不限于TGID（TrunkingGroupID，集群群组ID）。
进一步地，基站接收用户终端上报的群组信息，即可识别出与该群组信息对应的群组相关的用户终端，具体地，在一个实施例中，基站接收用户终端上报的群组信息包括：首先，基站在集群寻呼信道上广播包含群组信息的集群寻呼消息；随后，基站接收用户终端在确定自身与集群寻呼消息中的群组信息相关时所上报的集群寻呼消息中携带的群组信息。基站在广播该集群寻呼消息后，用户终端接收该集群寻呼消息，若该集群寻呼消息为其自身所感兴趣时，则确定自身与该集群寻呼消息中的群组信息相关，此时，用户终端则将该群组信息上报给基站，其中，如果用户终端处于连接状态（RRC_CONNECTED状态）时，该用户终端则通过已分配的信道将群组信息上报给基站，而如果用户终端处于闲置状态（RRC_IDLE状态），该用户终端则通过发起随机接入的方式将群组信息上报给基站。需要说明的是，基站广播集群寻呼消息，是由于属于一个集群群组内的一个用户终端发起集群组呼，进而，集群寻呼消息包含集群组呼所对应的群组信息。
在另一个实施例中，基站接收用户终端上报的群组信息包括：基站接收用户终端上报的测量报告消息，并获取测量报告消息中携带的群组信息。这样，基站接收用户终端上报的群组信息，进而可识别出与该群组信息对应的群组相关的用户终端。当然，在其他实施例中，基站还可以通过自身与核心网之间的私有接口来识别用户终端所相关的群组，在本领域技术人员的理解范围内，在此不再说明。
步骤S204：在接收到核心网下发的一个群组的组呼/组播数据时，根据对应关系调度组呼/组播数据至群组对应的用户终端。
在步骤S204中，在上述步骤S202中用户终端与群组之间的对应关系建立之后，此时，核心网下发该群组的组呼/组播数据，基站在接收到该组呼/组播数据，根据所建立的对应关系来调度该组呼/组播数据到群组对应的用户终端。具体地，在一个实施例中，基站根据对应关系调度组呼/组播数据至群组对应的用户终端包括：判断是否存在组呼/组播数据的群组的对应关系；若存在，则基站调度组呼/组播数据至群组对应的用户终端；若不存在，则基站不调度组呼/组播数据。解决基站无法确认是否其小区内存在组呼/组播数据对应的群组中所包含的用户终端，仍然下发组呼/组播数据而导致系统空口资源浪费的问题，这样可将系统带宽分配给本基站下有需要的用户终端，提高系统的频谱利用率，。
通过上述实施例的实施，基站在识别到与群组相关的用户终端，则建立用户终端与群组之间的对应关系，在组呼/组播数据被下发时，根据对应关系调度组呼/组播数据，解决由于无法确定组呼/组播数据对应的群组中包含的用户终端的位置而导致的频谱资源浪费的问题，提高频谱利用率。
进一步地，在上述步骤S202中基站建立群组与相关的用户终端之间的对应关系之后，基站将建立对应关系的用户终端保持在RRC_CONNECTED状态，此时，基站可通过获取用户终端的信道条件来调度组呼/组播数据至群组对应的用户终端，这样，在综合考虑用户终端的信道条件的基础上，基站可自适应采用合适的调制编码方式，从而进一步提高系统的频谱利用率。
具体地，在一个实施例中，步骤S204中，基站调度组呼/组播数据包括：首先，获取保持在连接状态的用户终端的信道条件，随后，根据信道条件确定调度组呼/组播数据所采用的调制编码方式，进而根据确定的调制编码方式调度组呼/组播数据。其中，信道条件包括用户终端上报的信道质量状况/测量报告中包含的参考信号接收功率。相对于现有技术中基站在无法得到小区内正在参与组呼的用户终端的信道状况而选择相对较低的调制编码方式，基站根据用户终端的信道状况来确定调度组呼数据所采用的调制编码方式，可实现自适应调整编码方式，另外，当参与组呼的用户都在近点时，根据用户终端的信道状况来确定调制编码方式，大大提高了系统频谱利用率。
在其他实施例中，在上实施例的基础上，基站还可以先获取保持在连接状态的用户终端的用户位置，随后，根据用户位置确定调度组呼/组播数据的资源块（RB，Resource Block）以进行调度组呼/组播数据。例如，基站获取到保持在连接状态的多个用户终端的用户位置，若多个用户终端的用户位置满足某个策略时，则选择在中心资源进行调度组呼/组播数据，若满足另一个策略时，则选择在边缘资源进行调度组呼/组播数据，在本领域技术人员的理解范围内，本发明对某个策略和另一个策略不作限定。本实施例中，用户位置为基站根据用户终端上报的测量报告而确定的用户终端在小区中的位置。
进一步地，上述步骤S202中，在建立群组与相关的用户终端之间的对应关系之后，还包括：在检测到已建立对应关系的用户终端处于脱网状态时，基站将解除脱网状态的用户终端与群组之间的对应关系。这样，基站实时更新用户终端与群组之间的对应关系，在组呼/组播数据被下发时，方便根据对应关系来调度组呼/组播数据，提高频谱利用率。
进一步地，上述步骤S202中，在建立群组与相关的用户终端之间的对应关系之后，还包括：在识别到已与群组建立对应关系的用户终端与另一群组相关时，解除识别到的用户终端与群组之间的对应关系，并建立识别到的用户终端与另一群组之间的对应关系，其中，另一群组的优先级高于或等于群组的优先级。建立识别到的用户终端与另一群组之间的对应关系，与步骤S202中建立群组与相关的用户终端之间的对应关系相同，在本领域技术人员的理解范围之内，不再赘述。
如图3所示，是本发明的集群系统的通信装置一实施例的结构示意图，该集群系统的通信装置300用于基站，包括建立模块310和调度模块320。
建立模块310用于在识别到基站的小区中存在与群组相关的用户终端时，建立群组与相关的用户终端之间的对应关系；
调度模块320用于在接收到核心网下发的一个群组的组呼/组播数据时，根据对应关系调度组呼/组播数据至群组对应的用户终端。
进一步地，建立模块310具体用于接收用户终端上报的群组信息；建立该用户终端与该群组信息对应的群组之间的对应关系。
进一步地，在一个实施例中，建立模块310在建立群组与相关的用户终端之间的对应关系之后，建立模块310还用于在检测到已建立对应关系的用户终端处于脱网状态时，解除脱网状态的用户终端与群组之间的对应关系。
进一步地，在另一个实施例中，建立模块310在建立群组与相关的用户终端之间的对应关系之后，建立模块310还用于在识别到已与群组建立对应关系的用户终端与另一群组相关时，解除识别到的用户终端与群组之间的对应关系，并建立识别到的用户终端与另一群组之间的对应关系，其中，另一群组的优先级高于或等于群组的优先级。
进一步地，调度模块320具体用于判断是否存在组呼/组播数据的群组的对应关系；若存在，则调度模块320调度组呼/组播数据至群组对应的用户终端；若不存在，则调度模块320不调度组呼/组播数据。
进一步地，建立模块310在建立群组与相关的用户终端之间的对应关系之后，建立模块310还用于将建立对应关系的用户终端保持在RRC_CONNECTED状态，此时，调度模块320调度组呼/组播数据，具体包括：首先，获取保持在连接状态的用户终端的信道条件，随后，根据信道条件确定调度组呼/组播数据所采用的调制编码方式，进而根据确定的调制编码方式调度组呼/组播数据。其中，信道条件包括用户终端上报的信道质量状况/测量报告中包含的参考信号接收功率。
上述装置的模块可对应用于执行上述方法实施例中的步骤，具体说明请参阅上述方法实施例的描述。
如图4所示，是本发明的基站一实施例的结构示意图，本实施例的基站为图1中的基站，例如，基站16，或者基站17，或者基站18，该基站包括接收器410、发送器420、处理器430、存储器440以及总线450；
接收器410用于接收外部设备发送的消息，例如，用户终端上报的群组消息、核心网下发的一个群组的组呼/组播数据等。
发送器420用于向外部设备发送消息，例如，调度后的组呼/组播数据等。
存储器440用于存储被配置为被处理器430执行的计算机指令，以及在处理器430工作过程中所需保存或缓存的数据。
本实施例中，处理器430通过调用存储器440存储的计算机指令，用于执行：
在识别到基站的小区中存在与群组相关的用户终端时，建立群组与相关的用户终端之间的对应关系；
在接收器410接收到核心网下发的一个群组的组呼/组播数据时，根据对应关系调度组呼/组播数据，进而通过发送器420发送至群组对应的用户终端。
进一步地，处理器430执行建立群组与相关的用户终端之间的对应关系，包括：通过接收器410接收用户终端上报的群组信息；建立该用户终端与该群组信息对应的群组之间的对应关系。
进一步地，在一个实施例中，处理器430执行建立群组与相关的用户终端之间的对应关系之后，还执行在检测到已建立对应关系的用户终端处于脱网状态时，解除脱网状态的用户终端与群组之间的对应关系。
进一步地，在另一个实施例中，处理器430在执行建立群组与相关的用户终端之间的对应关系之后，还执行在识别到已与群组建立对应关系的用户终端与另一群组相关时，解除识别到的用户终端与群组之间的对应关系，并建立识别到的用户终端与另一群组之间的对应关系，其中，另一群组的优先级高于或等于群组的优先级。
进一步地，处理器430执行根据对应关系调度组呼/组播数据，进而通过发送器420发送至群组对应的用户终端，包括：判断是否存在组呼/组播数据的群组的对应关系；若存在，则调度组呼/组播数据，进而通过发送器420发送至群组对应的用户终端；若不存在，则不调度组呼/组播数据。
进一步地，处理器430在执行建立群组与相关的用户终端之间的对应关系之后，还执行将建立对应关系的用户终端保持在RRC_CONNECTED状态，此时，处理器430执行调度组呼/组播数据，包括：首先获取保持在连接状态的用户终端的信道条件，随后，根据信道条件确定调度组呼/组播数据所采用的调制编码方式，进而根据确定的调制编码方式调度组呼/组播数据。其中，信道条件包括用户终端上报的信道质量状况/测量报告中包含的参考信号接收功率。进而，处理器430指示发送器420将调度后的组呼/组播数据发送至群组对应的用户终端。
本实施例中，基站在识别到与群组相关的用户终端，则建立用户终端与群组之间的对应关系，在组呼/组播数据被下发时，根据对应关系调度组呼/组播数据，解决由于无法确定组呼/组播数据对应的群组中包含的用户终端的位置而导致的频谱资源浪费的问题，提高频谱利用率。
以上仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围。

Claims (16)

  1. 一种集群系统的通信方法，其中，包括：
    基站在识别到所述基站的小区中存在与群组相关的用户终端时，建立所述群组与所述相关的用户终端之间的对应关系；
    在接收到核心网下发的一个群组的组呼/组播数据时，根据所述对应关系调度所述组呼/组播数据至所述群组对应的用户终端。
  2. 根据权利要求1中所述的通信方法，其中，
    所述建立所述群组与所述相关的用户终端之间的对应关系之后，还包括：
    所述基站将建立对应关系的用户终端保持在连接状态；
    所述基站调度所述组呼/组播数据包括：
    所述基站获取保持在连接状态的用户终端的信道条件；
    根据所述信道条件确定调度所述组呼/组播数据所采用的调制编码方式；
    根据确定的调制编码方式调度所述组呼/组播数据；
    其中，所述信道条件包括所述用户终端上报的信道质量状况/测量报告中包含的参考信号接收功率。
  3. 根据权利要求2中所述的通信方法，其中，
    所述基站调度所述组呼/组播数据还包括：
    所述基站获取保持在连接状态的用户终端的用户位置；
    根据用户位置确定调度所述组呼/组播数据所采用的资源块以进行调度所述组呼/组播数据；
    其中，所述用户位置为所述基站根据用户终端上报的测量报告而确定的用户终端在小区中的位置。
  4. 根据权利要求1中所述的通信方法，其中，所述建立所述群组与所述相关的用户终端之间的对应关系包括：
    接收用户终端上报的群组信息；
    建立所述用户终端与所述群组信息对应的群组之间的对应关系。
  5. 根据权利要求4中所述的通信方法，其中，所述接收用户终端上报的群组信息，包括：
    所述基站在集群寻呼信道上广播包含群组信息的集群寻呼消息；
    接收用户终端在确定自身与所述集群寻呼消息中的群组信息相关时所上报的所述集群寻呼消息中携带的群组信息。
  6. 根据权利要求4中所述的通信方法，其中，所述接收用户终端上报的群组信息，包括：
    所述基站接收用户终端上报的测量报告消息，并获取所述测量报告消息中携带的群组信息。
  7. 根据权利要求1中所述的通信方法，其中，在所述建立所述群组与所述相关的用户终端之间的对应关系之后，还包括：
    在检测到已建立对应关系的用户终端处于脱网状态时，所述基站将解除所述脱网状态的用户终端与所述群组之间的对应关系。
  8. 根据权利要求1中所述的通信方法，其中，在所述建立所述群组与所述相关的用户终端之间的对应关系之后，还包括：
    在识别到已与所述群组建立对应关系的用户终端与另一群组相关时，解除所述识别到的用户终端与所述群组之间的对应关系，并建立所述识别到的用户终端与所述另一群组之间的对应关系，其中，所述另一群组的优先级高于或等于所述群组的优先级。
  9. 一种集群系统的通信装置，其中，包括：
    建立模块，用于在识别到所述基站的小区中存在与群组相关的用户终端时，建立所述群组与所述相关的用户终端之间的对应关系；
    调度模块，用于在接收到核心网下发的一个群组的组呼/组播数据时，根据所述对应关系调度所述组呼/组播数据至所述群组对应的用户终端。
  10. 一种基站，其中，包括处理器、接收器、发送器及存储器；
    所述存储器用于存储被配置为被所述处理器执行的计算机指令；
    所述处理器执行所述计算机指令，用于：
    在识别到所述基站的小区中存在与群组相关的用户终端时，建立所述群组与所述相关的用户终端之间的对应关系；
    在所述接收器接收到核心网下发的一个群组的组呼/组播数据时，根据所述对应关系调度所述组呼/组播数据，进而通过所述发送器发送至所述群组对应的用户终端。
  11. 根据权利要求10中所述的基站，其中，
    所述处理器执行所述建立所述群组与所述相关的用户终端之间的对应关系之后，包括：
    所述处理器将建立对应关系的用户终端保持在连接状态；
    所述处理器执行所述调度所述组呼/组播数据，具体包括：
    获取保持在连接状态的所述用户终端的信道条件；
    根据所述信道条件确定调度所述组呼/组播数据所采用的调制编码方式；
    根据确定的调制编码方式调度所述组呼/组播数据；
    其中，所述信道条件包括所述用户终端上报的信道质量状况/测量报告中包含的参考信号接收功率。
  12. 根据权利要求10中所述的基站，其中，所述处理器执行所述建立所述群组与所述相关的用户终端之间的对应关系，具体包括：
    通过所述接收器接收用户终端上报的群组信息；
    建立所述用户终端与所述群组信息对应的群组之间的对应关系。
  13. 根据权利要求12中所述的基站，其中，所述处理器执行所述通过所述接收器接收用户终端上报的群组信息，包括：
    在集群寻呼信道上广播包含群组信息的集群寻呼消息；
    通过所述接收器接收用户终端在确定自身与所述集群寻呼消息中的群组信息相关时所上报的所述集群寻呼消息中携带的群组信息。
  14. 根据权利要求12中所述的基站，其中，所述处理器执行所述通过所述接收器接收用户终端上报的群组信息，包括：
    所述处理器通过所述接收器接收用户终端上报的测量报告消息，并获取所述测量报告消息中携带的群组信息。
  15. 根据权利要求10中所述的基站，其中，所述处理器在执行建立所述群组与所述相关的用户终端之间的对应关系之后，还包括：
    在检测到已建立对应关系的用户终端处于脱网状态时，所述处理器将解除所述脱网状态的用户终端与所述群组之间的对应关系。
  16. 根据权利要求10中所述的基站，其中，所述处理器在执行建立所述群组与所述相关的用户终端之间的对应关系之后，还包括：
    在识别到已与所述群组建立对应关系的用户终端与另一群组相关时，解除所述识别到的用户终端与所述群组之间的对应关系，并建立所述识别到的用户终端与所述另一群组之间的对应关系，其中，所述另一群组的优先级高于或等于所述群组的优先级。
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