WO2011160373A1 - 一种实现故障弱化的方法和系统 - Google Patents

一种实现故障弱化的方法和系统 Download PDF

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Publication number
WO2011160373A1
WO2011160373A1 PCT/CN2010/078065 CN2010078065W WO2011160373A1 WO 2011160373 A1 WO2011160373 A1 WO 2011160373A1 CN 2010078065 W CN2010078065 W CN 2010078065W WO 2011160373 A1 WO2011160373 A1 WO 2011160373A1
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cluster
rnti
group
terminal
base station
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PCT/CN2010/078065
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English (en)
French (fr)
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张现周
叶少强
张文英
李建辉
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中兴通讯股份有限公司
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Publication of WO2011160373A1 publication Critical patent/WO2011160373A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Definitions

  • the present invention relates to a Long Term Evolution (LTE) cluster system, and more particularly to a method and system for implementing fault weakening. Background technique
  • LTE cluster refers to the LTE-related technology to complete the cluster function.
  • the trunking communication system is a dedicated wireless communication system developed for industrial users' command and dispatching needs for specific industry applications. A large number of wireless users share a small number of wireless channels in the system, and the command and dispatch is the main application. It is a multi-purpose and high-efficiency system. Wireless communication system.
  • the trunking communication system has a wide range of applications in the government sector, public safety, emergency telecommunications, power, civil aviation, petrochemical and military sectors.
  • the trunked communication system has undergone a similar development process as cellular mobile communication systems.
  • the first generation cluster system is an analog trunking communication system that mainly supports voice communication.
  • the first analog cluster communication system that entered China was Nokia's Actionet system, which used MPT-1327 signaling and was applied in the 450MHz band. Since then, Japan's F.A.S.T and Motorola's Smartnet have entered China.
  • the second-generation cluster system is a narrow-band digital trunking communication system. It started in the 1990s and began to be deployed in China around 2004. It is the most widely used cluster communication system in China.
  • the digital trunking communication system supports voice and low-speed data (up to 28.8 kbps) communication.
  • the representative system is the Terrestrial Trunked Radio (TETRA) system defined by the European Telecommunications Standards Institute (ETSI), and the integration of Motorola in the United States.
  • Digital Enhanced Network (IED) system ZTE Corporation's open cluster based on CDMAIX Structure (GoTa, Global Open Trunking Architecture) system, Huawei Technologies Co., Ltd. based on GSM developed GT800 system.
  • the TETRA network has experienced the fastest growth in the last two or three years.
  • the number of terrestrial trunked radio (TETRA) networks accounts for about two-thirds.
  • the iDEN system has improved the time slot and modulation method to introduce a wideband integrated digital enhanced network (WiDEN, Wide-iDEN), which increases the peak transmission rate to 384 kbps; TETRA Enhanced Data Service (TEDS, TETRA Release 2 Enhanced) Data Service), ideally supports peak transmission rates up to 700kbps; none of them reach the order of Mbps.
  • WiDEN wideband integrated digital enhanced network
  • TMS TETRA Enhanced Data Service
  • TETRA Release 2 Enhanced Data Service ideally supports peak transmission rates up to 700kbps; none of them reach the order of Mbps.
  • existing digital trunking systems are not well suited to demand in terms of spectrum utilization and coverage.
  • the system bandwidth downlink exceeds 100Mbps
  • the uplink bandwidth exceeds 50Mbps
  • the call setup time is short, less than 100ms.
  • the trunking communication system communicates in a half-duplex mode, and the push-and-talk is performed during work ( PTT, Push To Talk) key control channel acquisition and release, high channel utilization, fast call connection; users in the group share the downlink channel, high resource utilization.
  • PTT Push To Talk
  • the trunking communication system can guarantee the privacy and security of the call through voice encryption; preferentially allocate channels for high-priority users or services; ensure communication under emergency conditions through fault weakening function; realize flexible multi-level packet scheduling through dynamic reorganization Command function; Broadband trunking communication system expands broadband service types around three basic services: "voice”, "data” and "video”, including: group call/visual group call, single call/visible single call, emergency call, etc.
  • Voice services mobile information services, high-speed data query, web browsing, mobile office, location services and other data services; video conferencing, mobile video surveillance and other video services; with group call, direct call and other fast command and dispatch capabilities; Multi-service transmission capabilities of data, images and video; It has network interconnection and off-network communication capabilities to support direct or terminal construction of Mesh networks, etc.; high network reliability, strong fault weakening and anti-destructive capabilities; support for large traffic areas in hotspots and hotspots; short call setup The single system call setup time is less than 300ms.
  • the LTE cluster will inherit the advanced nature of LTE technology and adopt a flat network architecture to reduce service access delay.
  • the LTE cluster network includes an MME, an SGW, an eNB (evolved base station), a cluster scheduling part, and a cluster terminal.
  • the LTE cluster introduces two transport channels: a trunk control channel (TCCH) and a trunked traffic channel (TCCH), which implement group call establishment and release, and voice rights on the TCCH. It is noted that this method has a great risk in transmitting signaling on the unidirectional channel. For example, if the message is lost, the state machine may be in trouble, and the status of multiple terminals may be inconsistent.
  • TCCH trunk control channel
  • TCCH trunked traffic channel
  • the configuration of transmitting TTCH in the TCCH is generally performed in the LTE system. Not so implemented, LTE is implemented by blind detection, which simplifies configuration. At present, such an implementation does not fully utilize the characteristics of LTE. How to fully integrate cluster and LTE to take advantage of LTE in clusters is a matter of discussion. Summary of the invention
  • the present invention provides a method and system for implementing fault weakening, which enables the cluster to work normally and improve the robustness and destructive capability of the system if there is a problem in the core network or if the core network is not connected.
  • the present invention provides a method for implementing fault weakening, including: separating a plurality of radio network temporary identifiers (RNTIs) resources for cluster services; associating RNTIs with cluster groups; When the core network is connected, the terminal initiates the cluster call, and sends the cluster number and the RNTI to the base station.
  • the base station creates a cluster instance and triggers periodic cluster paging.
  • the network side receives the cluster call of the terminal, the cluster service belongs to the group.
  • the associated RNTI processes the media data of the cluster service and sends it to the terminal.
  • the method further includes: when the terminal receives the cluster paging, using the same The RNTI associated with the group to which the cluster service belongs is processed by the downlink data to obtain the media data of the cluster service.
  • the associating the RNTI with the group of the cluster includes: after the network side establishes the group, acquiring an RNTI from the separated RNTI resources, and associating the RNTI with the cluster number of the group And storing the association relationship between the cluster number and the RNTI in the terminal of the group.
  • the network side processes the media data of the cluster service by using the RNTI associated with the group to which the cluster service belongs, and sends the data to the terminal, including: when the core network receives the cluster call, establishes a cluster call.
  • the entity, triggering the cluster paging sends a cluster bearer setup request message to each base station in the cluster area, where the cluster bearer setup request message includes a cluster number and an associated RNTI, where each base station establishes a cluster bearer; and the core network sends the cluster media data. Go to each of the base stations; the base stations process the cluster media data using the RNTI associated with the cluster number, and send the cluster media data to the terminal.
  • the method further includes: the network side modifying an association relationship between the group and the RNTI, and transmitting an association relationship between the updated group and the RNTI to the terminal.
  • the invention also provides a system for implementing fault weakening, comprising: a network side, wherein the network side is configured to: separate a plurality of radio network temporary identifiers (RNTI) resources for cluster services; and associate the RNTIs with cluster groups
  • RNTI radio network temporary identifiers
  • the terminal initiates a cluster call and sends the cluster number and RNTI to the base station.
  • the base station creates a cluster instance and triggers periodic cluster paging.
  • the cluster is used.
  • the RNTI associated with the group to which the service belongs processes the media data of the cluster service and sends it to the terminal.
  • system further includes a terminal, where the terminal is configured to: when receiving the paging of the cluster, process the downlink data by using the RNTI associated with the group to which the cluster service belongs, and obtain the media data of the cluster service.
  • the network side is configured to: separate several RNTI resources for the cluster service; And after the group is established, acquiring an RNTI from the separated RNTI resources, associating the RNTI with the cluster number of the group, and storing the association relationship between the cluster number and the RNTI Said terminal.
  • the network side includes a core network and a base station, where: the core network is configured to: when a cluster call is received, establish a cluster call entity, trigger cluster paging, trigger each base station in the cluster area to establish a cluster bearer, and The cluster number and the associated RNTI are sent to the base stations; and after the base stations establish a cluster bearer, the cluster media data is sent to the base stations; the base stations are used to: establish a cluster bearer; and, receive the core network After transmitting the cluster media data, the cluster media data is processed and transmitted to the terminal using the RNTI associated with the cluster number.
  • the core network is configured to: when a cluster call is received, establish a cluster call entity, trigger cluster paging, trigger each base station in the cluster area to establish a cluster bearer, and The cluster number and the associated RNTI are sent to the base stations; and after the base stations establish a cluster bearer, the cluster media data is sent to the base stations; the base stations are used to: establish a cluster bearer; and, receive the
  • the network side is further configured to: modify an association relationship between the group and the RNTI, and send an association relationship between the updated group and the RNTI to the terminal.
  • the RNTI is combined with the cluster ID, which reduces the implementation difficulty, reduces the cost and makes it easier to use.
  • FIG. 1 is a block diagram of a LTE cluster network structure in the prior art
  • FIG. 2 is a diagram showing a process of establishing a fault weakened cluster call according to the present invention. detailed description
  • LTE introduces a Radio Network Temporary Identify (RNTI), and uses RNTI to distinguish between a paging channel, a broadcast channel, a multicast channel, and a common channel.
  • RNTI Radio Network Temporary Identify
  • the present invention fully combines RNTI with a cluster, and performs RNTI with services and packets. Combine and take full advantage of the features of LTE.
  • Association between the group of the cluster and the RNTI for example, one group uses one RNTI; in the case of a failure of the core network or no core network connection, the association between the group of the cluster and the RNTI is still stored in the UE.
  • the cluster number and the RNTI are sent to the base station, and the base station creates a cluster instance, which triggers periodic cluster paging;
  • the network side When receiving the cluster call of the terminal, the network side processes the media data of the cluster service by using the RNTI associated with the group to which the cluster service belongs, and sends the data to the terminal:
  • the RNTI pair data associated with the group to which the cluster service belongs is used.
  • the terminal receives the cluster paging, the downlink data is processed by using the corresponding RNTI (that is, the RNTI associated with the group to which the cluster service belongs), and the media data of the cluster service is obtained.
  • Pre-conditions Separate a number of RNTI resources for cluster services: Group RNTIs (Radio Network Temporary Identifiers), part of which is used for cluster services, and put them on the cluster control entity (TCE, Trunk Control Entity) as resources. Pool unified management.
  • Group RNTIs Radio Network Temporary Identifiers
  • TCE Trunk Control Entity
  • the core network establishes a group of the cluster, requests the RNTI resource from the TCE, associates the RNTI resource with the group, and specifically, associates with the cluster number of the group. .
  • the cluster terminal When the cluster terminal subscribes to the data, it writes the cluster number of the group to which the terminal belongs and the associated RNTI to the terminal.
  • the terminal number and the association relationship between the RNTI and the RNTI can be notified to the terminal in other ways, which is not limited by the present invention.
  • the association between the RNTI and the group of the cluster includes: after the network side establishes the group, acquiring an RNTI from the separated RNTI resources, associating the RNTI with the cluster number of the group, and associating the cluster
  • the association between the number and the RNTI is stored in the terminal of the group.
  • the group and the RNTI association relationship may be updated, including: the core network modifies the association between the group and the RNTI by using the non-access stratum message, and implements dynamic change of the association relationship between the group to which the UE belongs and the RNTI.
  • the network side After the network side receives the cluster call of the terminal, the network side processes the media data of the cluster service by using the RNTI associated with the group to which the cluster service belongs, including:
  • step S1 the UE initiates a cluster call by using unicast.
  • the core network receives the cluster call, the cluster call entity is established, triggering the cluster paging, and triggering the process of establishing the cluster bearer to all the base stations in the cluster area, and the cluster number and associated
  • the RNTI is sent to each base station, and specifically includes: the core network sends a cluster bearer setup request message to each base station in the cluster area, where the cluster bearer setup request message includes a cluster number and an associated RNTI; each base station establishes a cluster bearer;
  • Step S2 After the base station successfully establishes the cluster bearer, the core network sends the cluster media data to each base station;
  • Step S3 Each base station processes the cluster media data by using the RNTI associated with the cluster number, and sends the data to the UE.
  • the specific processing method is: generating a scrambling code by using the RNTI, the physical message ID, and the subframe number to perform scrambling on the CCE;
  • Step S4 After receiving the cluster paging, the UE processes the downlink data by using the RNTI associated with the cluster number of the group to which the cluster paging belongs, and reads the corresponding cluster media data.
  • the specific processing method is: generating a scrambling code by using the RNTI, the physical cell ID, and the subframe number to descramble the CCE. If the CRC is correct, the DCI is parsed, and the data is decoded according to the DCI.
  • the process diagram of the fault weakening cluster call setup process of the present invention includes: Step 201: The UE application triggers a trunk call, and the UE sends a random access request message to the base station;
  • Step 202 The base station receives the random access request message, allocates an uplink resource, and sends the uplink resource to the UE by using a random access response message.
  • Step 203 The UE receives a random access response message, and sends an RRC (Radio Resource Control) setup request message to the base station on the allocated uplink resource.
  • RRC Radio Resource Control
  • Step 204 The base station receives the RRC setup request message, and allocates related physical resources, including a SRS (Sounding Reference Signal) and a Physical Uplink Control Channel (PUCCH), establishes a UE instance, and sends an RRC establishment. Message to the UE;
  • SRS Sounding Reference Signal
  • PUCCH Physical Uplink Control Channel
  • Step 205 The UE receives the RRC setup message, and sends an RRC setup complete message to the base station, where the RRC setup complete message includes the cluster number and the RNTI information.
  • Step 207 The simulated core network receives the initial UE context message, constructs an internal initial UE context request message, sends the message to the protocol processing module, triggers the cluster paging, and sends a cluster bearer setup request message to the protocol processing module.
  • Step 208 The protocol processing module receives the paging, triggers the paging, receives the initial UE context request message, establishes an association relationship between the UE and the cluster instance, and sends an internal cluster bearer setup request message to the analog core network.
  • the analog core network sends an initial UE context response message, triggering an RRC reconfiguration procedure.
  • the loopback of the UE uplink unicast data to the cluster instance is completed.
  • the downlink uses the cluster-related RNTI for data processing, and the terminal that receives the data uses the cluster-related RNTI for data processing, thereby completing the fault weakening function in the case of the core network fault.
  • the same group is allowed to establish only one instance of the UE with the right to speak, using a first-come, first-served mechanism.
  • the present invention provides a cluster service processing system, including:
  • the network side is used to: Separate several Radio Network Temporary Identity (RNTI) resources for the cluster industry.
  • RNTI Radio Network Temporary Identity
  • the terminal When the core network fails or there is no core network connection, the terminal initiates a cluster call, and sends the cluster number and RNTI to the base station.
  • the base station creates a cluster instance and triggers periodic cluster paging.
  • the cluster service When receiving the cluster call of the terminal, the cluster service is used.
  • the RNTI associated with the group processes the media data of the cluster service and sends the data to the terminal.
  • the system further includes a terminal, where the terminal is configured to: when receiving the paging of the cluster, process the downlink data by using the RNTI associated with the group to which the cluster service belongs, and obtain the media data of the cluster service.
  • the network side is configured to: separate a plurality of RNTI resources for the cluster service; and, after establishing the group, obtain an RNTI from the separated RNTI resources, associate the RNTI with the cluster number of the group, and set the cluster number and the The association relationship of the RNTI is stored in the terminal.
  • the network side includes a core network and a base station, where:
  • the core network is configured to: when a cluster call is received, establish a trunking call entity, trigger a cluster paging, trigger each base station in the cluster area to establish a cluster bearer, and send the cluster number and the associated RNTI to each base station; and, establish, at each base station After the cluster is carried, the cluster media data is sent to each base station; each base station is configured to: establish a cluster bearer; and, after receiving the cluster media data sent by the core network, perform the cluster media data by using the RNTI associated with the cluster number. Processed and sent to the terminal.
  • the network side is further configured to: modify an association between the group and the RNTI, and send the updated relationship between the updated group and the RNTI to the terminal.

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Abstract

本发明提供了一种实现故障弱化的方法，该方法包括：将若干无线网络临时标识（RNTI）资源分离用于集群业务；将RNTI和集群的群组进行关联；核心网发生故障或无核心网连接时，终端发起集群呼叫同时，将集群编号和RNTI发送给基站，基站创建集群实例，触发周期性的集群寻呼；网络侧收到终端的集群呼叫时，将使用集群业务所属群组关联的RNTI对集群业务的媒体数据进行处理，发送给终端。本发明还提供了一种实现故障弱化的系统，采用本发明所述方法和系统，与现有技术相比，由于采用了RNTI与集群ID绑定，降低了实现难度，间接地降低了成本，且更加容易使用。

Description

一种实现故障弱化的方法和系统 技术领域
本发明涉及长期演进（LTE, Long Term Evolution ) 集群系统， 尤其涉 及一种实现故障弱化的方法和系统。 背景技术
LTE集群是指使用 LTE相关的技术， 完成集群功能。 集群通信系统是 为了满足行业用户指挥调度需求而开发的、 面向特定行业应用的专用无线 通信系统， 系统中大量无线用户共享少量无线信道， 以指挥调度为主体应 用， 是一种多用途、 高效能的无线通信系统。 集群通信系统在政府部门、 公共安全、 应急通信、 电力、 民航、 石油化工和军队等领域有着广泛的应 用市场。
集群通信系统经历了与蜂窝移动通信系统类似的发展历程。 第一代集 群系统是模拟集群通信系统， 主要支持语音通信。 最早进入我国的模拟集 群通信系统是 Nokia公司的 Actionet系统， 它釆用 MPT-1327信令， 应用在 450MHz频段上。 此后， 日本的 F.A.S.T和美国 Motorola公司的 Smartnet 进入我国。
第二代集群系统是窄带数字集群通信系统， 兴起于 20世纪 90年代， 2004年左右开始在我国部署， 是当前国内应用最广泛的集群通信系统。 数 字集群通信系统支持语音和低速数据 (最高 28.8kbps )通信， 代表系统是欧 洲电信标准组织 ( ETSI, European Telecommunications Standards Institute ) 定义的陆上集群无线电 （TETRA, Terrestrial Trunked Radio ) 系统、 美国 Motorola 的综合数字增强型网络 （ iDEN , integrated Digital Enhanced Networks )系统， 中兴通讯股份有限公司基于 CDMAIX开发的开放式集群 结构 （GoTa, Global Open Trunking Architecture ) 系统、 华为技术有限公司 基于 GSM开发的 GT800系统。 从国内来看， 最近两三年， TETRA网络的 增长最快， 在全国已建的数字集群通信网中， 陆上集群无线电 （TETRA, Terrestrial Trunked Radio ) 网的数量约占 2/3强。
从目前我国集群通信系统的发展来看， 集群通信系统的发展远远落后 于公众蜂窝系统的发展， 其技术创新和产业链等方面都还不尽完备。 在数 据传输能力和多媒体业务的支持能力方面， 目前的数字窄带集群通信系统 仍然比较落后。 例如， iDEN系统对时隙和调制方法进行改进后而推出的宽 带综合数字增强型网络 （ WiDEN, Wide-iDEN ), 将峰值传输速率提高至 384kbps; TETRA增强型数据业务 ( TEDS, TETRA Release 2 Enhanced Data Service ), 理想情况下可支持不超过 700kbps 的峰值传输速率； 均未达到 Mbps的数量级。 此外， 在频谱利用率和覆盖方面， 现有的数字集群系统也 不能很好的满足需求。
LTE 技术推出之后， 系统带宽下行超过 100Mbps , 上行带宽超过 50Mbps, 呼叫建立时间短， 小于 100ms, 这样满足宽带集群系统的特征： 集群通信系统以半双工方式通信，工作时通过即按即说（ PTT , Push To Talk ) 键控制信道的获取和释放， 信道利用率高， 呼叫接续快； 组内用户共享下 行信道， 资源利用率高。 而且， 集群通信系统可以通过话音加密保证通话 的私密性和安全性； 为高优先级用户或业务优先分配信道； 通过故障弱化 功能保证紧急状态下的通信； 通过动态重组实现灵活的多级别分组调度指 挥功能； 宽带集群通信系统围绕 "语音"、 "数据"、 "视频" 这三个基本服 务拓展宽带业务类型， 包括： 组呼 /可视组呼、 单呼 /可视单呼、 紧急呼叫等 语音类业务； 移动信息服务、 高速数据查询、 网络浏览、 移动办公、 定位 服务等数据类业务； 视频会议、 移动视频监控等视频类业务； 具有群呼、 直呼等快速指挥调度能力； 集语音、 数据、 图像和视频的多业务传输能力； 具有网络互联和脱网通信能力， 以支持直通或终端构建 Mesh网络等； 网络 可靠性高， 具有强故障弱化和抗毁能力； 支持大热点地区、 热点时段的大 话务量能力； 呼叫建立短， 单系统呼叫建立时间小于 300ms。
LTE集群将继承 LTE技术的先进性， 釆用扁平的网络架构， 降低业务 接入延迟。 如图 1所示， LTE集群网络包含 MME、 SGW、 eNB (演进的基 站）和集群调度部分， 以及集群终端。 现有技术中， LTE 集群引入了两个 传输信道： 集群控制信道（TCCH, Trunked Control Channel )和集群业务 信道（ TTCH, Trunked Transaction Channel ), 在 TCCH上实现组呼的建立 和释放、 话语权的通知， 这种方法在单向信道传输信令存在很大风险， 例 如， 如果消息丟失， 会造成状态机出现问题， 多个终端的状态出现不一致； 在 TCCH发送 TTCH的配置， 在 LTE系统中一般不这样实现， LTE釆用盲 检的方法实现， 简化配置， 目前这样的实现方式没有充分利用 LTE的特性。 如何将集群和 LTE充分结合， 发挥 LTE在集群的优势， 这是一个需要商榷 的内容。 发明内容
本发明提供一种实现故障弱化的方法和系统， 使在核心网出现问题， 或没有连接核心网的情况下， 能够使集群正常工作， 提高系统的健壮性和 扛毁能力。
为了解决上述问题， 本发明提供了一种实现故障弱化的方法， 包括： 将若干无线网络临时标识（RNTI ) 资源分离用于集群业务； 将 RNTI和集 群的群组进行关联； 核心网发生故障或无核心网连接时， 终端发起集群呼 叫同时， 将集群编号和 RNTI发送给基站， 基站创建集群实例， 触发周期性 的集群寻呼； 网络侧收到终端的集群呼叫时， 使用集群业务所属群组关联 的 RNTI对集群业务的媒体数据进行处理， 发送给终端。
进一步地， 所述方法还包括： 所述终端接收到集群寻呼时， 使用与所 述集群业务所属群组关联的 RNTI对下行数据进行处理，获取所述集群业务 的媒体数据。
进一步地，所述将 RNTI和集群的群组进行关联包括： 网络侧建立群组 后， 从分离的所述若干 RNTI资源中获取一 RNTI, 将所述 RNTI与所述群 组的集群编号进行关联，将所述集群编号与 RNTI的关联关系存入所述群组 的终端。
进一步地， 所述网络侧收到终端的集群呼叫时， 使用集群业务所属群 组关联的 RNTI对集群业务的媒体数据进行处理， 发送给终端， 包括： 核心 网收到集群呼叫时， 建立集群呼叫实体， 触发集群寻呼， 向集群区域的各 基站发送集群承载建立请求消息， 所述集群承载建立请求消息中包括集群 编号和关联的 RNTI, 所述各基站建立集群承载； 核心网发送集群媒体数据 到所述各基站；所述各基站使用与所述集群编号关联的 RNTI对所述集群媒 体数据进行处理， 发送给终端。
进一步地， 所述方法还包括， 所述网络侧修改所述群组与所述 RNTI 的关联关系， 将更新后的群组与 RNTI的关联关系发送到终端。
本发明还提供了一种实现故障弱化的系统， 包括： 网络侧， 所述网络 侧用于：将若干无线网络临时标识（RNTI )资源分离用于集群业务；将 RNTI 和集群的群组进行关联； 核心网发生故障或无核心网连接时， 终端发起集 群呼叫同时， 将集群编号和 RNTI发送给基站， 基站创建集群实例， 触发周 期性的集群寻呼； 收到终端的集群呼叫时， 使用集群业务所属群组关联的 RNTI对集群业务的媒体数据进行处理， 发送给终端。
进一步地， 所述系统还包括终端， 所述终端用于： 接收到集群寻呼时， 使用与所述集群业务所属群组关联的 RNTI对下行数据进行处理，获取所述 集群业务的媒体数据。
进一步地， 所述网络侧是用于： 将若干 RNTI资源分离用于集群业务； 以及， 建立群组后， 从分离的所述若干 RNTI资源中获取一 RNTI, 将所述 RNTI与所述群组的集群编号进行关联， 将所述集群编号与所述 RNTI的关 联关系存入所述终端。
进一步地， 所述网络侧包括核心网和基站， 其中： 所述核心网用于： 收到集群呼叫时， 建立集群呼叫实体， 触发集群寻呼， 触发集群区域的各 基站建立集群承载，并将集群编号和关联的 RNTI发送给所述各基站；以及， 在各基站建立集群承载后， 发送集群媒体数据到所述各基站； 所述各基站 用于： 建立集群承载； 以及， 收到核心网发送的集群媒体数据后， 使用与 所述集群编号关联的 RNTI对所述集群媒体数据进行处理， 发送给终端。
进一步地，所述网络侧还用于：修改所述群组与所述 RNTI的关联关系 , 将更新后的群组与 RNTI的关联关系发送到终端。
釆用本发明所述方法和系统， 与现有技术相比， 由于釆用了 RNTI与集 群 ID绑定， 降低了实现难度， 间接地降低了成本， 且更加容易使用。 附图说明
图 1是现有技术中 LTE集群网络结构框图；
图 2是本发明故障弱化集群呼叫建立过程图。 具体实施方式
下面结合附图和实施例， 进一步说明本发明。
LTE 引 入 了 无线 网 络临 时标识 （ RNTI , Radio Network Temporary Identify ), 使用 RNTI区分寻呼信道、 广播信道、 多播信道和公 共信道， 本发明将 RNTI与集群充分地结合， 将 RNTI与业务、 分组进行结 合， 充分利用 LTE的特性。
本发明技术方案是：
将若干 RNTI资源分离用于集群业务： 将 RNTI规划出一部分， 用于集 群业务；
将集群的群组与 RNTI建立关联关系， 比如，一个群组使用一个 RNTI; 在核心网发生故障或无核心网连接的情况下，集群的群组与 RNTI的关 联关系仍保存在 UE中， 当 UE发起集群呼叫时， 将集群编号和 RNTI发送 给基站， 基站创建集群实例， 触发周期性的集群寻呼；
网络侧收到终端的集群呼叫时， 使用集群业务所属群组关联的 RNTI 对集群业务的媒体数据进行处理， 发送给终端： 基站发送集群业务时， 使 用该集群业务所属群组关联的 RNTI对数据进行处理； 另外， 当终端收到集 群寻呼时， 使用对应的 RNTI (即上述集群业务所属群组关联的 RNTI )对 下行数据进行处理， 获取集群业务的媒体数据即可。
本发明所述的方法如下：
首先进行初始化， 包括：
0. 前置条件： 将若干 RNTI资源分离用于集群业务： 对 RNTI (无线 网络临时标识）进行分组， 分出一部分用于集群业务， 放到集群控制实体 ( TCE, Trunk Control Entity )上作为资源池统一管理。
1. 将 RNTI和集群的群组进行关联： 核心网建立集群的一个群组， 到 TCE上请求 RNTI资源， 将 RNTI资源与该群组进行关联， 具体地， 与该群 组的集群编号进行关联。
2. 集群终端在签约数据的时候， 将该终端所属的群组的集群编号和关 联的 RNTI—起写入终端。 当然， 也可以通过其他方式将集群编号和 RNTI 的关联关系告知终端， 本发明对此不作限定。
通过上述初始化过程可知，将 RNTI和集群的群组进行关联包括： 网络 侧建立群组后， 从分离的若干 RNTI资源中获取一 RNTI, 将该 RNTI与群 组的集群编号进行关联， 并将集群编号与 RNTI 的关联关系存入群组的终 端。 其中， 在初始化后， 还可进行群组和 RNTI关联关系的更新， 包括： 核 心网通过非接入层消息修改群组与 RNTI的关联关系， 实现 UE所属群组与 RNTI的关联关系的动态更改。
在初始化后， 网络侧收到终端的集群呼叫时， 使用集群业务所属群组 关联的 RNTI对集群业务的媒体数据进行处理， 包括：
步骤 SI , UE通过单播发起集群呼叫， 核心网收到集群呼叫时， 建立集 群呼叫实体， 触发集群寻呼， 同时向集群区域的所有基站触发建立集群承 载的过程， 并将集群编号和关联的 RNTI发送给各基站， 具体地， 包括： 核 心网向集群区域的各基站发送集群承载建立请求消息， 所述集群承载建立 请求消息中包括集群编号和关联的 RNTI; 各基站建立集群承载；
步骤 S2, 核心网在各基站建立集群承载成功后， 发送集群媒体数据到 各个基站；
步骤 S3 , 各个基站使用与集群编号关联的 RNTI对集群媒体数据进行 处理， 发送给 UE;
具体处理方法为： 使用所述 RNTI、 物理消息 ID和子帧号生成扰码， 对 CCE进行加扰；
步骤 S4, UE收到集群寻呼后，使用与所述集群寻呼所属群组的集群编 号关联的 RNTI对下行数据进行处理， 读取对应的集群媒体数据。
具体处理方法为： 使用所述 RNTI、 物理小区 ID和子帧号生成扰码， 对 CCE进行解扰， 如果 CRC正确， 解析 DCI, 根据 DCI对数据进行解码。
如图 2所示， 为本发明故障弱化集群呼叫建立过程图， 包括： 步骤 201 , UE应用程序触发集群呼叫， UE发送随机接入请求消息给 基站；
步骤 202, 基站收到随机接入请求消息， 分配上行资源， 将上行资源通 过随机接入响应消息告知 UE; 步骤 203 , UE收到随机接入响应消息， 在分配的上行资源上发送 RRC (无线资源控制 )建立请求消息给基站；
步骤 204, 基站收到 RRC建立请求消息， 分配相关的物理资源， 包括 解调参考信号 （SRS , Sounding Reference Signal ) 和物理上行控制信道 ( PUCCH, Physics Uplink Control Channel ), 建立 UE实例， 发送 RRC建 立消息给 UE;
步骤 205 , UE接收 RRC建立消息，在基站分配的物理资源上发送 RRC 建立完成消息给基站，该 RRC建立完成消息中包含集群编号和 RNTI信息； 步骤 206, 基站收到 RRC建立完成消息， 若发现与核心网之间的通路 存在故障， 且携带了集群编号和 RNTI, 向基站的模拟核心网发送初始 UE 上下文消息；
步骤 207, 模拟核心网收到初始 UE上下文消息， 构造内部的初始 UE 上下文请求消息， 发送给协议处理模块， 同时触发集群寻呼， 向协议处理 模块发送集群承载建立请求消息；
步骤 208, 协议处理模块收到寻呼， 触发寻呼， 收到初始 UE上下文请 求消息，建立 UE与集群实例之间的关联关系， 向模拟核心网发送内部的集 群承载建立请求消息； 同时， 向模拟核心网发送初始 UE上下文响应消息， 触发 RRC重配流程。
至此完成 UE上行单播数据到集群实例的环回， 下行使用集群相关的 RNTI进行数据处理，接收数据的终端使用集群相关的 RNTI进行数据处理， 从而完成核心网故障情况下的故障弱化功能。 在故障弱化功能中， 同一个 组只允许建立一个具有话语权的 UE实例， 釆用先到先得机制。
为了实现上述实现故障弱化的方法， 本发明提供了一种集群业务处理 系统， 包括： 网络侧，
网络侧用于： 将若干无线网络临时标识 （RNTI ) 资源分离用于集群业 务；
将 RNTI和集群的群组进行关联；
核心网发生故障或无核心网连接时， 终端发起集群呼叫同时， 将集群 编号和 RNTI发送给基站， 基站创建集群实例， 触发周期性的集群寻呼； 收到终端的集群呼叫时，使用集群业务所属群组关联的 RNTI对集群业 务的媒体数据进行处理， 发送给终端。
该系统还包括终端， 所述终端用于： 接收到集群寻呼时， 使用与集群 业务所属群组关联的 RNTI对下行数据进行处理， 获取集群业务的媒体数 据。
网络侧是用于： 将若干 RNTI资源分离用于集群业务； 以及， 建立群组 后 , 从分离的若干 RNTI资源中获取一 RNTI, 将 RNTI与群组的集群编号 进行关联， 将集群编号与所述 RNTI的关联关系存入终端。
网络侧包括核心网和基站， 其中：
核心网用于： 收到集群呼叫时， 建立集群呼叫实体， 触发集群寻呼， 触发集群区域的各基站建立集群承载，并将集群编号和关联的 RNTI发送给 各基站； 以及， 在各基站建立集群承载后， 发送集群媒体数据到各基站； 各基站用于： 建立集群承载； 以及， 收到核心网发送的集群媒体数据 后，使用与所述集群编号关联的 RNTI对所述集群媒体数据进行处理，发送 给终端。
网络侧还用于：修改群组与 RNTI的关联关系 ,将更新后的群组与 RNTI 的关联关系发送到终端。
以上所述， 仅为本发明的较佳实施例而已， 并非用于限定本发明的保 护范围。

Claims

权利要求书
1、 一种实现故障弱化的方法， 其特征在于， 包括：
将若干无线网络临时标识（RNTI ) 资源分离用于集群业务；
将 RNTI和集群的群组进行关联；
核心网发生故障或无核心网连接时， 终端发起集群呼叫同时， 将集群 编号和 RNTI发送给基站， 基站创建集群实例， 触发周期性的集群寻呼； 网络侧收到终端的集群呼叫时， 使用集群业务所属群组关联的 RNTI 对集群业务的媒体数据进行处理， 发送给终端。
2、 如权利要求 1所述的方法， 其特征在于， 所述方法还包括： 所述终端接收到集群寻呼时， 使用与所述集群业务所属群组关联的 RNTI对下行数据进行处理， 获取所述集群业务的媒体数据。
3、 如权利要求 1或 2所述的方法， 其特征在于， 所述将 RNTI和集群 的群组进行关联包括：
网络侧建立群组后， 从分离的所述若干 RNTI资源中获取一 RNTI, 将 所述 RNTI与所述群组的集群编号进行关联，将所述集群编号与 RNTI的关 联关系存入所述群组的终端。
4、 如权利要求 1所述的方法， 其特征在于， 所述网络侧收到终端的集 群呼叫时，使用集群业务所属群组关联的 RNTI对集群业务的媒体数据进行 处理， 发送给终端， 包括：
核心网收到集群呼叫时， 建立集群呼叫实体， 触发集群寻呼， 向集群 区域的各基站发送集群承载建立请求消息， 所述集群承载建立请求消息中 包括集群编号和关联的 RNTI, 所述各基站建立集群承载；
核心网发送集群媒体数据到所述各基站；
所述各基站使用与所述集群编号关联的 RNTI对所述集群媒体数据进 行处理， 发送给终端。
5、 如权利要求 1、 2或 4所述的方法， 其特征在于， 所述方法还包括， 所述网络侧修改所述群组与所述 RNTI 的关联关系， 将更新后的群组与 RNTI的关联关系发送到终端。
6、 一种集群业务处理系统， 其特征在于， 包括： 网络侧， 所述网络侧 用于： 将若干无线网络临时标识（RNTI ) 资源分离用于集群业务；
将 RNTI和集群的群组进行关联；
核心网发生故障或无核心网连接时， 终端发起集群呼叫同时， 将集群 编号和 RNTI发送给基站， 基站创建集群实例， 触发周期性的集群寻呼； 收到终端的集群呼叫时，使用集群业务所属群组关联的 RNTI对集群业 务的媒体数据进行处理， 发送给终端。
7、 如权利要求 6所述的系统， 其特征在于， 所述系统还包括终端， 所 述终端用于： 接收到集群寻呼时， 使用与所述集群业务所属群组关联的 RNTI对下行数据进行处理， 获取所述集群业务的媒体数据。
8、 如权利要求 6或 7所述的系统， 其特征在于， 所述网络侧是用于： 将若干 RNTI资源分离用于集群业务； 以及， 建立群组后， 从分离的所述若 干 RNTI资源中获取一 RNTI, 将所述 RNTI与所述群组的集群编号进行关 联， 将所述集群编号与所述 RNTI的关联关系存入所述终端。
9、 如权利要求 6所述的系统， 其特征在于， 所述网络侧包括核心网和 基站， 其中：
所述核心网用于： 收到集群呼叫时， 建立集群呼叫实体， 触发集群寻 呼， 触发集群区域的各基站建立集群承载， 并将集群编号和关联的 RNTI 发送给所述各基站； 以及， 在各基站建立集群承载后， 发送集群媒体数据 到所述各基站；
所述各基站用于： 建立集群承载； 以及， 收到核心网发送的集群媒体 数据后， 使用与所述集群编号关联的 RNTI对所述集群媒体数据进行处理， 发送给终端。
10、 如权利要求 6、 7或 9所述的系统， 其特征在于， 所述网络侧还用 于： 修改所述群组与所述 RNTI的关联关系， 将更新后的群组与 RNTI的关 联关系发送到终端。
PCT/CN2010/078065 2010-06-23 2010-10-25 一种实现故障弱化的方法和系统 WO2011160373A1 (zh)

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