WO2011063667A1 - 一种家庭基站系统中无线网络临时标识的分配方法及系统 - Google Patents

一种家庭基站系统中无线网络临时标识的分配方法及系统 Download PDF

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Publication number
WO2011063667A1
WO2011063667A1 PCT/CN2010/076316 CN2010076316W WO2011063667A1 WO 2011063667 A1 WO2011063667 A1 WO 2011063667A1 CN 2010076316 W CN2010076316 W CN 2010076316W WO 2011063667 A1 WO2011063667 A1 WO 2011063667A1
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Prior art keywords
base station
home base
rnti
station gateway
gateway
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PCT/CN2010/076316
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English (en)
French (fr)
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奚进
李兰兰
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中兴通讯股份有限公司
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Publication of WO2011063667A1 publication Critical patent/WO2011063667A1/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

Definitions

  • the present invention relates to the field of communications, and in particular, to a temporary identifier of a home base station wireless network.
  • the home base station is a small, low-power cellular base station that is named for use in indoor rooms such as homes and offices.
  • One of its functions is to complement the indoor coverage of the cellular network, providing users with voice and data services.
  • the home base station features low cost, support for plug and play, broadband access, and low power.
  • the home base station can be connected to the 3G network architecture.
  • the 3G network architecture is shown in Figure 1.
  • Figure 1 For the Chinese in English in Figure 1, please see the unified explanation at the end of this article.
  • the home base station system radio access network introduces a home base station gateway.
  • 2 is a network architecture diagram of a 3G home base station. As shown in FIG.
  • the home base station is connected to the core network through a home base station gateway, and the interface between the home base station and the home base station gateway is an Iuh interface, a home base station gateway, and a core network circuit domain (
  • the interface of CS) is the Iu-CS interface
  • the home base station gateway and the core network packet domain (PS) interface are Iu-PS interfaces.
  • the physical connection of the Iu interface exists in the home base station gateway and the core network element (SGSN).
  • the Iu interface uses the Radio Access Network Application Part (RANAP) of the application layer protocol.
  • the SGSN is a serving general packet radio service support node, represented by a Serving GPRS Suport Node.
  • the home base station and the home base station gateway are standardized interfaces.
  • the 3G home base station network architecture is defined as an Iuh interface, and an application layer protocol is added corresponding to the interface, namely: a HNBAP (HNB Application Protocol) protocol, and an adaptation.
  • Layer protocol ie: RANAP User Adaptation Layer Protocol (RUA, RANAP User Adaption) protocol, which have their respective functions. It mainly defines some functions of the application layer.
  • HNBAP HNB Application Protocol
  • some application layer flows between the home base station and the home base station gateway are mainly standardized, mainly including the home base station registering with the home base station gateway, and the user equipment (UE, User Equipment) to the home.
  • the base station gateway registers and the process of the UE deregistering from the home base station gateway.
  • the RANAP user adaptation protocol mainly stipulates the function of carrying the RANAP (RAN Application Protocol) message, including the use of the connect message to carry the RANAP initial UE connection, and the direct transmission message to carry other uplink RANAPs. Messages, etc.
  • the U-RNTI is a UE radio network temporary identifier in a Universal Terrestrial Radio Access Network (UTRAN) network architecture, and the identifier is used as a UE in the signaling between the UTRAN network element and the UE and the UTRAN network element.
  • the logo is carried.
  • the U-RNTI consists of two parts, namely: SRNC ID+S-RNTI, where the SRNC ID is the Radio Network Controller (RNC) identifier, and the S-RNTI is assigned to all the owned Radio Resource Control Protocols (RRC, Radio). Resource Control)
  • RRC Radio Network Controller
  • the U-RNTI of the UE is allocated and managed by the RNC.
  • the UE's U-RNTI can be allocated and managed by the home base station. Since the home base stations connected to the same home base station gateway may have the same SRNC ID, different home base stations may allocate the same S-RNTI to different UEs according to the composition of the U-RNTI.
  • the manner in which the U-RNTI is currently allocated by the home base station can only ensure that each home base station assigns a unique identifier to each of the multiple UEs belonging to the home base station, but for multiple home base stations,
  • the U-RNTI allocated by other home base stations is not known, so that different home base stations may allocate the same S-RNTI to different UEs.
  • the UE accesses through the home base station connected to the same home base station gateway there may be a collision of the U-RNTI.
  • U-RNTI conflicting solution is an urgent need for a way to avoid distribution.
  • the main object of the present invention is to provide a U-RNTI allocation method and system in a home base station system, which can avoid the conflict of allocated U-RNTIs.
  • a method for allocating a temporary identifier of a wireless network in a home base station system includes: in a process of registering a user equipment (UE) with a home base station gateway, the home base station gateway allocates a temporary wireless network temporary identifier in the entire network to the UE ( U-RNTI).
  • UE user equipment
  • the method further includes: feeding back the U-RNTI to the home base station.
  • the method further includes: the home base station allocates a temporary U-RNTI to the UE, before the home base station gateway allocates the U-RNTI to the UE, when the registration process is the registration process of the initial access of the UE.
  • the feeding back the U-RNTI to the home base station includes: the home base station gateway feeding back the U-RNTI to the home base station by using a UE registration request response message;
  • the feedback process further includes the U-RNTI update process: the home base station receives the UE registration request response message, and after parsing the U-RNTI, updates the U-RNTL of the UE by using radio resource control (RRC) signaling.
  • RRC radio resource control
  • the home base station gateway allocates the U-RNTI to the UE, including:
  • the target home base station gateway After receiving the relocation/handover request message from the source base station, the target home base station gateway allocates the U-RNTL to the UE if there is no U-RNTI of the UE locally.
  • the feeding back the U-RNTI to the home base station includes:
  • the target home base station gateway feeds back the U-RNTI to the target home base station through a relocation request message.
  • a system for allocating a temporary identifier of a wireless network in a home base station system comprising: an allocating unit, configured to allocate a unique U-RNTL in the entire network to the UE by the home base station gateway in the process of registering the UE with the home base station gateway
  • the system further includes: a feedback unit, configured to: the home base station gateway feeds back the U-RNTI to the home base station.
  • the feedback unit is further configured to: the home base station gateway feeds back the U-RNTI to the home base station by using a UE registration request response message.
  • the system further includes: an updating unit, configured to receive, by the home base station, the UE registration request response message, and after parsing the U-RNTI, update the U-RNTI of the UE by using RRC signaling.
  • an updating unit configured to receive, by the home base station, the UE registration request response message, and after parsing the U-RNTI, update the U-RNTI of the UE by using RRC signaling.
  • the allocation unit is further configured to: when the registration process is a registration process accompanied by a UE handover, after the target home base station gateway receives the relocation/handover request message from the source base station, if there is no local UE U-RNTI, then assigning the U-RNTL to the UE
  • the feedback unit is further configured to: the target home base station gateway feeds back the U-RNTI to the target home base station by using a relocation request message.
  • the home base station gateway allocates a unique U-RNTI in the entire network to the UE.
  • the U-RNTI is allocated by the home base station, and the home base station gateway uniformly allocates the unique U-RNTI of the entire network, so that different home base stations belonging to the home base station gateway can be avoided.
  • the case where different UEs are assigned the same identity occurs, thereby avoiding the conflict of the allocated U-RNTIs.
  • Figure 1 is a 3G network architecture diagram
  • Figure 2 is a network architecture diagram of a 3G home base station
  • 3 is a flowchart of U-RNTI allocation and transmission in a registration process of initial access of a UE according to the present invention
  • 4 is a flow chart of U-RNTI allocation and transmission in a registration process accompanying UE handover according to the present invention.
  • the basic idea of the present invention is: In the process of the UE registering with the home base station gateway, the home base station gateway allocates a unique U-RNTI in the entire network to the UE.
  • a method for allocating a U-RNTI in a home base station system includes: in a process of registering a UE with a home base station gateway, the home base station gateway allocates a unique U-RNTL in the entire network to the UE, where the home base station gateway is a UE After the U-RNTI is allocated, the method further includes: feeding back, by the home base station gateway, the U-RNTI allocated by the UE to the home base station.
  • the registration process is the case of the registration process when the UE initially accesses.
  • the method further includes:
  • the UE allocates a temporary U-RNTI.
  • the temporary U-RNTI must be allocated by the home base station first, otherwise the whole process cannot be continued.
  • the temporary base station is not required to allocate the temporary U-RNTL.
  • the home base station gateway feeds back the U-RNTI allocated by the UE to the home base station, and specifically includes: the home base station gateway feeds back the U-RNTI allocated by the home base station gateway to the UE to the home base station by using the UE registration request response message.
  • the feedback process further includes a process of updating the U-RNTI, specifically: the home base station receives the UE registration request response message, parses the U-RNTI allocated by the home base station gateway for the UE, and updates the UE by using radio resource control (RRC) signaling.
  • RRC radio resource control
  • the second case The registration process is the case of the registration process accompanying the UE handover.
  • the home base station gateway allocates the U-RNTI to the UE, specifically: the target home base station gateway After receiving the relocation/handover request message from the source base station, if there is no U-RNTI of the UE locally, the U-RNTI is allocated to the UE.
  • the target home base station gateway feeds back the U-RNTI allocated by the UE to the home base station, and the target home base station gateway feeds back the U-RNTI allocated by the target home base station gateway to the UE to the target home base station through the relocation request message.
  • the present invention relates to a home base station network architecture, an interface between a home base station gateway and a home base station, and signaling messages on the interface.
  • a solution is proposed for the temporary identification of the wireless network in which the UE is allocated in the home base station network architecture.
  • the solution of the present invention is that in the home base station network architecture, in the process of the UE's attention to the home base station network, the home base station gateway allocates a unique U-RNTI for the UE to the UE, including the following contents:
  • the home base station After the UE establishes an RRC connection with the home base station, the home base station allocates a temporary temporary U-RNTI in the home base station to the UE, and initiates a UE registration request message for the UE to the home base station gateway.
  • the home base station gateway After the home base station gateway receives the UE registration request message sent by the home base station, the home base station gateway allocates a unique U-RNTI under the home base station gateway, and returns a UE registration request response message to the home base station, in the message. Carry the newly assigned U-RNTI.
  • the home base station After receiving the U-RNTI in the registration request response, the home base station updates the U-RNTI to the UE, and the new U-RNTI is the newly allocated U-RNTL of the home base station gateway.
  • the invention is illustrated by way of example below.
  • Embodiment 1 is a scenario of a registration process when the UE initially accesses.
  • This embodiment is a home base station network architecture applicable to a 3G home base station.
  • the home base station in this embodiment is an HNB, which is different from an evolved home base station (HeNB, Home eNodeB).
  • HeNB evolved home base station
  • the process of allocating a U-RNTI when the UE initially accesses the network includes the following steps:
  • Step 301 Establish an RRC connection between the UE and the home base station.
  • Step 302 The home base station allocates a temporary U-RNTI to the UE, that is, T-URNTI. After the establishment of the RRC connection between the UE and the home base station, the home base station checks whether there is a U-RNTI of the UE locally. If not, the home base station The UE is allocated a temporary U-RNTI; the UE sends a direct transmission message to the home base station, where the message carries the UE identifier, that is, the IMSI or the TMSI, and carries the NAS signaling.
  • the temporary U-RNTI refers to the temporary identifier of the UTRAN radio network; the T-URNTI refers to the temporary UTRAN radio network temporary identifier; the IMSI refers to the international mobile subscriber identity code; the TMSI refers to the customer temporary identification code; and the NAS refers to the non-access stratum signaling.
  • Step 303 The home base station checks the version of the UE and the UE capability, according to the version information of the UE, and whether the UE supports the closed subscriber group (CSG, Closed Subscriber Group) capability, and checks whether the context identifier of the UE is local, if there is no context identifier of the UE. Then, step 304 is performed.
  • CSG Closed Subscriber Group
  • Step 304 The home base station sends a UE registration request message to the home base station gateway, where the message carries the UE capability information and the UE version number.
  • Step 305 The home base station gateway performs access control on the UE.
  • the home base station gateway When the home base station is a CSG cell, the home base station gateway always allows the UE to access, and performs access control on the core network.
  • Step 306 If the home base station gateway allows the UE to access the network, the home base station gateway allocates a U-RNTI to the UE, and sends a UE registration request response message to the home base station, where the message carries the U-RNTI information.
  • Step 307 After receiving the UE registration request response, the home base station updates the U-RNTI of the UE by using RRC signaling.
  • the second embodiment is a scenario of a registration process accompanying UE handover.
  • the present embodiment is a home base station network architecture applicable to a 3G home base station.
  • the source base station may be a general macro base station (NodeB) or a home base station.
  • the home base station in this embodiment is an HNB, which is different from the HeNB.
  • the process of allocating a U-RNTI when the UE switches to the network includes the following steps: Step 401: The UE sends a measurement report to the source base station.
  • Step 402 The source base station sends a relocation request message to the SGSN, where the relocation request message carries the target home base station gateway identifier.
  • Step 403 Perform access control on the SGSN of the core network. If the SGSN allows the UE to cut in, perform S404, otherwise send a relocation request rejection message to the source base station.
  • Step 404 The SGSN sends a relocation request message to the home base station gateway, where the message carries the UE identifier, the bearer identifier that needs to be established on the target side, and the like.
  • Step 405 After receiving the relocation/handover request message, the target home base station gateway allocates a unique U-RNTI in the entire network to the UE if there is no U-RNTI of the UE locally.
  • Step 406 The target home base station gateway sends a relocation request message to the target home base station, where the message carries the U-RNTL allocated by the UE to the UE.
  • Step 407 The target home base station sends a relocation request response message to the home base station gateway, where the message carries the bearer information established by the target side for the UE.
  • Step 408 The home base station gateway sends a relocation request response message to the SGSN.
  • Step 409 After receiving the relocation request response message sent by the home base station gateway, the SGSN sends a relocation command to the source base station.
  • Step 410 The target home base station sends a relocation check message to the home base station gateway.
  • Step 411 The target home base station gateway sends a relocation check message to the SGSN, and after receiving the relocation check message, the core network element SGSN changes the control plane transmission direction change from the source base station to the target home base station.
  • Step 412 The target home base station sends an RRC message to the UE, where the message name is RAN mobile information, and carries the U-RNTI allocated by the target home base station in step 406 for the UE.
  • Step 413 The UE sends a RAN mobile information acknowledgement message to the target home base station.
  • Step 414 The target home base station sends a relocation complete message to the home base station gateway, to notify the core network that the handover process is completed.
  • Step 415 The target home base station gateway sends a relocation complete message to the SGSN.
  • the target home base station is an HNB.
  • some of the processes are different, but the processes closely related to the present invention are unchanged.
  • a U-RNTI allocation system in a home base station system comprising: an allocating unit, configured to allocate a unique U-RNTI in the entire network to the UE by the home base station gateway in the process of registering the UE with the home base station gateway.
  • the system further includes: a feedback unit, configured to: the home base station gateway feeds back the U-RNTI allocated by the home base station gateway to the UE to the home base station.
  • the registration process is the case of the registration process when the UE initially accesses.
  • the feedback unit is further configured to: the home base station gateway feeds back, by using the UE registration request response message, the U-RNTI allocated by the home base station gateway to the UE to the home base station.
  • the system further includes: an updating unit, configured to receive, by the home base station, a UE registration request response message, and after parsing the U-RNTI allocated by the home base station gateway for the UE, updating the U-RNTL of the UE by using RRC signaling
  • the second case The registration process is the case of the registration process accompanying the UE handover.
  • the allocation unit is further configured to: when the registration process is a registration process accompanied by the UE handover, after the target home base station gateway receives the relocation/handover request message from the source base station, if there is no U-RNTI of the UE locally, The UE allocates a U-RNTI.
  • the feedback unit is further configured to: the target home base station gateway feeds back, by using the relocation request message, the U-RNTI allocated by the target home base station gateway to the UE to the target home base station.
  • the UTRAN is a universal terrestrial radio access network, represented by the Universal Terrestrial Radio Access Network
  • the RNS is a wireless network subsystem, which is represented by a Radio Network Subsystem
  • the RNC is a radio network controller, represented by a Radio Network Controller
  • the NodeB is a Node B, which may also be referred to as a base station
  • the core network involved is represented by a Core Network, abbreviated as CN.

Description

一种家庭基站系统中无线网络临时标识的分配方法及系统 技术领域
本发明涉及通信领域， 尤其涉及一种家庭基站无线网络临时标识
背景技术
家庭基站是一种小型、 低功率蜂窝基站， 主要用于家庭及办公室等室 内场所而得名。 它的作用之一是作为蜂窝网在室内覆盖的补充， 为用户提 供话音及数据服务。 家庭基站具有低成本、 支持即插即用、 通过宽带接入、 低功率等特点。
家庭基站可以接入在 3G网络架构中， 3G网络架构如图 1所示， 图 1 中涉及英文的中文请见本文最后的统一解释。 为了便于对家庭基站进行管 理， 减少对核心网的影响， 家庭基站系统无线接入网引入了家庭基站网关。 图 2是 3G家庭基站网络架构图， 如图 2所示， 家庭基站通过家庭基站网关 与核心网相连， 家庭基站和家庭基站网关之间的接口是 Iuh接口， 家庭基站 网关和核心网电路域（ CS ) 的接口是 Iu-CS接口， 家庭基站网关和核心网 分组域（ PS )接口是 Iu-PS接口。 Iu接口的物理连接存在于家庭基站网关 和核心网网元（SGSN ), 从逻辑上来讲， Iu接口釆用应用层协议的无线接 入网络应用部分 ( RANAP, Radio Access Network Application Part )„ 其中， SGSN为服务通用分组无线业务支持节点， 以 Serving GPRS Suport Node表 示。
家庭基站和家庭基站网关是标准化的接口，对 3G家庭基站网络架构定 义为 Iuh接口， 对应此接口新增了应用层协议， 即： 家庭基站应用协议 ( HNBAP , HNB Application Protocol )协议、 和适配层协议， 即： RANAP 用户适配层协议（RUA, RANAP User Adaption )协议， 这两个协议具有它 们各自的功能。主要定义了应用层的一些功能，在 HNBAP协议中主要规范 了家庭基站和家庭基站网关之间的一些应用层流程， 主要包括家庭基站向 家庭基站网关注册， 用户设备（UE, User Equipment )向家庭基站网关注册 和 UE从家庭基站网关去注册等流程。 RANAP用户适配协议主要规范了承 载无线接入网应用协议（ RANAP , RAN Application Protocol )消息的功能， 包括釆用连接 ( connect )消息承载 RANAP初始 UE连接， 釆用直传消息承 载其他的上行 RANAP消息等。
U-RNTI是通用陆地无线接入网 （UTRAN, Universal Terrestrial Radio Access Network ) 网络架构中的 UE 无线网络临时标识， 这个标识是在 UTRAN网元和 UE以及 UTRAN网元之间的信令内部作为 UE标识携带的。 U-RNTI由两部分组成， 即： SRNC ID+S-RNTI, 其中 SRNC ID是无线网络 控制器（RNC , Radio Network Controller )标识， S-RNTI分配给所有的拥 有无线资源控制协议（RRC, Radio Resource Control )连接的 UEs, 它是由 服务 RNC分配并且在服务 RNC内是唯一的。在通用移动通信系统（ UMTS , Universal Mobile Telecommunication System ) 网络架构中， UE的 U-RNTI 是由 RNC分配和管理。在 3G家庭基站网络架构中， UE的 U-RNTI可以由 家庭基站进行分配和管理。 由于连接于同一家庭基站网关下的家庭基站可 能具有相同的 SRNC ID, 因此根据 U-RNTI的组成结构， 不同的家庭基站 可能会给不同的 UE分配相同的 S-RNTI。 也就是说， 釆用目前由家庭基站 分配 U-RNTI 的方式， 仅能保证每个家庭基站为下属于该家庭基站的多个 UE分别分配唯一的标识， 但是对于多个家庭基站而言， 并不知晓其他家庭 基站所分配的 U-RNTI, 从而导致不同的家庭基站可能会给不同的 UE分配 相同的 S-RNTI。 这样， 当 UE通过同一个家庭基站网关下相连的家庭基站 接入时， 可能会存在 U-RNTI 的冲突。 目前迫切需要一种能避免分配的 U-RNTI相冲突的解决方案。 发明内容
有鉴于此， 本发明的主要目的在于提供一种家庭基站系统中 U-RNTI 的分配方法及系统， 能避免分配的 U-RNTI相冲突。
为达到上述目的， 本发明的技术方案是这样实现的：
一种家庭基站系统中无线网络临时标识的分配方法， 该方法包括： 在 用户设备 ( UE ) 向家庭基站网关注册的过程中， 由家庭基站网关为 UE分 配全网内唯一的无线网络临时标识（ U-RNTI )。
其中， 家庭基站网关为 UE分配所述 U-RNTI之后， 该方法还包括： 将 所述 U-RNTI反馈给家庭基站。
其中， 当所述注册的过程为 UE初始接入时的注册过程时， 家庭基站网 关为 UE分配所述 U-RNTI之前， 该方法还包括： 家庭基站为 UE分配临时 的 U-RNTI。
其中， 将所述 U-RNTI反馈给家庭基站包括： 家庭基站网关通过 UE注 册请求应答消息将所述 U-RNTI反馈给家庭基站；
反馈之后还包括 U-RNTI的更新过程为：家庭基站接收到所述 UE注册 请求应答消息， 解析出所述 U-RNTI后， 通过无线资源控制（RRC )信令更 新 UE的 U-RNTL
其中， 当所述注册的过程为伴随 UE切换时的注册过程时， 家庭基站网 关为 UE分配所述 U-RNTI包括：
目标家庭基站网关收到来自于源基站的重定位 /切换请求消息后， 如果 本地没有 UE的 U-RNTI, 则为 UE分配所述 U-RNTL
其中， 将所述 U-RNTI反馈给家庭基站包括：
目标家庭基站网关通过重定位请求消息将所述 U-RNTI反馈给目标家 庭基站。 一种家庭基站系统中无线网络临时标识的分配系统， 该系统包括： 分 配单元， 用于在 UE向家庭基站网关注册的过程中， 由家庭基站网关为 UE 分配全网内唯一的 U-RNTL
其中， 该系统还包括： 反馈单元， 用于家庭基站网关将所述 U-RNTI 反馈给家庭基站。
其中， 所述反馈单元，进一步用于家庭基站网关通过 UE注册请求应答 消息将所述 U-RNTI反馈给家庭基站。
其中， 该系统还包括： 更新单元， 用于家庭基站接收到所述 UE注册请 求应答消息， 解析出所述 U-RNTI后， 通过 RRC信令更新 UE的 U-RNTI。
其中， 所述分配单元，进一步用于当所述注册的过程为伴随 UE切换时 的注册过程时， 目标家庭基站网关收到来自于源基站的重定位 /切换请求消 息后， 如果本地没有 UE的 U-RNTI, 则为 UE分配所述 U-RNTL
其中， 所述反馈单元， 进一步用于目标家庭基站网关通过重定位请求 消息将所述 U-RNTI反馈给目标家庭基站。
本发明在 UE向家庭基站网关注册的过程中， 由家庭基站网关为 UE分 配全网内唯一的 U-RNTI。
由于釆用本发明， 区别于现有技术由家庭基站分配 U-RNTI, 而是由家 庭基站网关统一分配全网唯一的 U-RNTI, 能避免下属于该家庭基站网关下 不同的家庭基站不会给不同的 UE分配相同的标识这一情况出现，从而避免 了分配的 U-RNTI相冲突。 附图说明
图 1为 3G网络架构图；
图 2为 3G家庭基站网络架构图；
图 3为本发明在 UE初始接入的注册过程中 U-RNTI分配和传输的流程 图； 图 4为本发明伴随 UE切换的注册过程中 U-RNTI分配和传输的流程 图。 具体实施方式
本发明的基本思想是： 在 UE向家庭基站网关注册的过程中， 由家庭基 站网关为 UE分配全网内唯一的 U-RNTI。
下面结合附图对技术方案的实施作进一步的详细描述。
一种家庭基站系统中 U-RNTI的分配方法， 该方法包括： 在 UE向家庭 基站网关注册的过程中，由家庭基站网关为 UE分配全网内唯一的 U-RNTL 这里， 家庭基站网关为 UE分配 U-RNTI之后还包括： 将家庭基站网关 为 UE分配的 U-RNTI反馈给家庭基站。
由于在不同情况下， 分配及反馈 U-RNTI的不同， 因此， 以下对各种情 况分别阐述。
第一种情况： 注册的过程为 UE初始接入时的注册过程的情况。
此时， 在家庭基站网关为 UE分配 U-RNTI之前还包括： 家庭基站为
UE分配临时的 U-RNTI。 作为上行方向来说， 必须先由家庭基站分配临时 的 U-RNTI, 否则整个流程无法继续， 而对于以下第二种情况涉及的下行方 向而言， 则无需家庭基站分配这个临时的 U-RNTL
这里，家庭基站网关将其为 UE分配的 U-RNTI反馈给家庭基站具体包 括： 家庭基站网关通过 UE注册请求应答消息， 将家庭基站网关为 UE分配 的 U-RNTI反馈给家庭基站。
反馈之后还包括 U-RNTI的更新过程， 具体为： 家庭基站接收到 UE注 册请求应答消息， 解析出家庭基站网关为 UE分配的 U-RNTI后， 通过无线 资源控制 （ RRC )信令更新 UE的 U-RNTL
第二种情况： 注册的过程为伴随 UE切换时的注册过程的情况。
此时， 家庭基站网关为 UE分配 U-RNTI具体包括： 目标家庭基站网关 收到来自于源基站的重定位 /切换请求消息后，如果本地没有 UE的 U-RNTI, 则为 UE分配 U-RNTI。
这里， 目标家庭基站网关将其为 UE分配的 U-RNTI反馈给家庭基站具 体包括： 目标家庭基站网关通过重定位请求消息， 将目标家庭基站网关为 UE分配的 U-RNTI反馈给目标家庭基站。
综上所述， 本发明涉及家庭基站网络架构、 家庭基站网关和家庭基站 间的接口以及该接口上的信令消息。 主要针对家庭基站网络架构中分配 UE 的无线网络临时标识提出了一种解决方案。
本发明的解决方案是在家庭基站网络架构中，在 UE向家庭基站网关注 册的过程中， 由家庭基站网关为 UE分配全网唯一的 U-RNTI, 包括以下内 容：
当 UE与家庭基站建立 RRC连接后， 家庭基站为 UE分配该家庭基站 内唯一的临时 U-RNTI, 并向家庭基站网关发起针对该 UE的 UE注册请求 消息。
当家庭基站网关收到家庭基站发出的 UE注册请求消息后，家庭基站网 关 就为该 UE分配一个在该家庭基站网关下唯一的 U-RNTI, 并且向家庭 基站返回 UE注册请求应答消息， 消息中携带新分配的 U-RNTI。
家庭基站收到注册请求应答中的 U-RNTI后， 向 UE更新 U-RNTI, 新 的 U-RNTI为家庭基站网关新分配的 U-RNTL
以下对本发明进行举例阐述。
实施例一为 UE初始接入时注册过程的场景。本实施例是适用于 3G 家 庭基站的家庭基站网络架构， 本实施例中的家庭基站是 HNB, 区别于演进 型家庭基站（HeNB, Home eNodeB )。 如图 3所示， 当 UE初始接入到网 络时分配 U-RNTI的流程包括以下步骤：
步骤 301： 建立 UE和家庭基站之间的 RRC连接。 步骤 302: 家庭基站向 UE分配临时 U-RNTI, 即为 T-URNTI; 当 UE 和家庭基站间的 RRC连接建立完成后， 家庭基站检查本地是否有该 UE的 U-RNTI, 如果没有， 家庭基站为该 UE分配一个临时的 U-RNTI; UE向家 庭基站发送直传消息， 消息中携带 UE标识， 即为 IMSI或者 TMSI, 承载 NAS信令。
其中， 临时 U-RNTI指 UTRAN无线网络临时标识； T-URNTI指暂态 UTRAN无线网络临时标识； IMSI指国际移动用户识别码； TMSI指客户临 时识别码； NAS指非接入层信令。
步骤 303: 家庭基站检查 UE的版本和 UE能力， 根据 UE的版本信息 以及 UE是否支持封闭用户组（ CSG , Closed Subscriber Group )能力， 并且 检查本地是否 UE的上下文标识， 如果不存在 UE的上下文标识， 则执行步 骤 304。
步骤 304: 家庭基站向家庭基站网关发送 UE注册请求消息， 消息中携 带 UE能力信息， UE版本号。
步骤 305: 家庭基站网关对 UE做接入控制； 当家庭基站是 CSG小区 时， 家庭基站网关总是允许 UE接入， 在核心网再做接入控制。
步骤 306: 如果家庭基站网关允许 UE接入网络， 那么家庭基站网关为 UE分配 U-RNTI, 并且向家庭基站发送 UE注册请求应答消息， 在消息中 携带 U-RNTI信息。
步骤 307: 家庭基站收到 UE注册请求应答后， 通过 RRC信令更新 UE 的 U-RNTI。
实施例二为伴随 UE切换时注册过程的场景。本实施例是适用于 3G 家 庭基站的家庭基站网络架构， 源基站可以是普通宏基站（NodeB )或者家庭 基站， 本实施例中的家庭基站是 HNB , 区别于 HeNB。 如图 4所示， 当 UE 切换到网络时分配 U-RNTI的流程包括以下步骤： 步骤 401 : UE向源基站发送测量报告。
步骤 402: 源基站向 SGSN发送重定位请求消息， 重定位请求消息中携 带目标家庭基站网关标识。
步骤 403: 在核心网的 SGSN做接入控制， 如果 SGSN允许 UE切入， 执行 S404, 否则向源基站发送重定位请求拒绝消息。
步骤 404: SGSN 向家庭基站网关发送重定位请求消息， 消息中携带 UE标识、 需要在目标侧建立的承载标识等信息。
步骤 405: 目标家庭基站网关收到重定位 /切换请求消息后， 如果本地 没有 UE的 U-RNTI, 为 UE分配全网内唯一的 U-RNTI。
步骤 406: 目标家庭基站网关向目标家庭基站发送重定位请求消息， 消 息中携带 S405为 UE分配的 U-RNTL
步骤 407: 目标家庭基站向家庭基站网关发送重定位请求应答消息， 消 息中携带目标侧为 UE建立的承载信息。
步骤 408: 家庭基站网关向 SGSN发送重定位请求应答消息。
步骤 409: SGSN收到家庭基站网关发送的重定位请求应答消息后， 向 源基站发送重定位命令。
步骤 410: 目标家庭基站向家庭基站网关发送重定位检查消息。
步骤 411 : 目标家庭基站网关向 SGSN发送重定位检查消息，核心网网 元 SGSN收到重定位检查消息后， 将控制面传送方向改变由源基站转向目 标家庭基站。
步骤 412: 目标家庭基站向 UE发送 RRC消息， 消息名称为 RAN移动 信息， 其中携带目标家庭基站在步骤 406获得的为 UE所分配的 U-RNTI。
步骤 413: UE向目标家庭基站发送 RAN移动信息确认消息。
步骤 414: 目标家庭基站向家庭基站网关发送重定位完成消息， 用于通 知核心网切换流程完成。 步骤 415: 目标家庭基站网关向 SGSN发送重定位完成消息。
需要说明的是本实施例适用于切换类型是 INTER-RAT 或者
INTRA-RAT场景， 且目标家庭基站是 HNB。对于不同类型的切换流程， 部 分流程不同， 但是和本发明密切相关的流程不变。
一种家庭基站系统中 U-RNTI的分配系统， 该系统包括： 分配单元， 用 于在 UE向家庭基站网关注册的过程中， 由家庭基站网关为 UE分配全网内 唯一的 U-RNTI。
这里， 该系统还包括： 反馈单元， 用于家庭基站网关将家庭基站网关 为 UE分配的 U-RNTI反馈给家庭基站。
由于在不同情况下， 系统分配及反馈 U-RNTI的不同， 因此， 以下对各 种情况分别阐述。
第一种情况： 注册的过程为 UE初始接入时的注册过程的情况。
反馈单元，进一步用于家庭基站网关通过 UE注册请求应答消息，将家 庭基站网关为 UE分配的 U-RNTI反馈给家庭基站。
该系统还包括：更新单元，用于家庭基站接收到 UE注册请求应答消息， 解析出家庭基站网关为 UE分配的 U-RNTI后， 通过 RRC信令更新 UE的 U-RNTL
第二种情况： 注册的过程为伴随 UE切换时的注册过程的情况。
分配单元， 进一步用于当注册的过程为伴随 UE切换时的注册过程时， 目标家庭基站网关收到来自于源基站的重定位 /切换请求消息后， 如果本地 没有 UE的 U-RNTI, 则为 UE分配 U-RNTI。
反馈单元， 进一步用于目标家庭基站网关通过重定位请求消息， 将目 标家庭基站网关为 UE分配的 U-RNTI反馈给目标家庭基站。
这里， 对以上各图及文字的中英文对照进行阐述。 图 1中， UTRAN为 通用陆地无线接入网， 以 Universal Terrestrial Radio Access Network表示； RNS为无线网络子系统 , 以 Radio Network Subsystem表示； RNC为无线网 络控制器， 以 Radio Network Controller表示； NodeB为节点 B, 也可以称 为基站； 涉及的核心网以 Core Network表示， 缩写为 CN。
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、 一种家庭基站系统中无线网络临时标识的分配方法， 其特征在于， 该方法包括： 在用户设备（UE ) 向家庭基站网关注册的过程中， 由家庭基 站网关为 UE分配全网内唯一的无线网络临时标识（ U-RNTI )。
2、 根据权利要求 1所述的方法， 其特征在于， 家庭基站网关为 UE分 配所述 U-RNTI之后， 该方法还包括： 将所述 U-RNTI反馈给家庭基站。
3、 根据权利要求 2 所述的方法， 其特征在于， 当所述注册的过程为 UE初始接入时的注册过程时，家庭基站网关为 UE分配所述 U-RNTI之前， 该方法还包括： 家庭基站为 UE分配临时的 U-RNTL
4、 根据权利要求 3所述的方法， 其特征在于， 将所述 U-RNTI反馈给 家庭基站包括： 家庭基站网关通过 UE 注册请求应答消息将所述 U-RNTI 反馈给家庭基站；
反馈之后还包括 U-RNTI的更新过程为：家庭基站接收到所述 UE注册 请求应答消息， 解析出所述 U-RNTI后， 通过无线资源控制（RRC )信令更 新 UE的 U-RNTL
5、 根据权利要求 2所述的方法， 其特征在于， 当所述注册的过程为伴 随 UE切换时的注册过程时， 家庭基站网关为 UE分配所述 U-RNTI包括： 目标家庭基站网关收到来自于源基站的重定位 /切换请求消息后， 如果 本地没有 UE的 U-RNTI, 则为 UE分配所述 U-RNTL
6、 根据权利要求 5所述的方法， 其特征在于， 将所述 U-RNTI反馈给 家庭基站包括：
目标家庭基站网关通过重定位请求消息将所述 U-RNTI反馈给目标家 庭基站。
7、 一种家庭基站系统中无线网络临时标识的分配系统， 其特征在于， 该系统包括： 分配单元， 用于在 UE向家庭基站网关注册的过程中， 由家庭 基站网关为 UE分配全网内唯一的 U-RNTL
8、 根据权利要求 7所述的系统， 其特征在于， 该系统还包括： 反馈单 元， 用于家庭基站网关将所述 U-RNTI反馈给家庭基站。
9、 根据权利要求 8所述的系统， 其特征在于， 所述反馈单元， 进一步 用于家庭基站网关通过 UE注册请求应答消息将所述 U-RNTI反馈给家庭基 站。
10、 根据权利要求 9所述的系统， 其特征在于， 该系统还包括： 更新 单元，用于家庭基站接收到所述 UE注册请求应答消息，解析出所述 U-RNTI 后， 通过 RRC信令更新 UE的 U-RNTI。
11、 根据权利要求 8 所述的系统， 其特征在于， 所述分配单元， 进一 步用于当所述注册的过程为伴随 UE切换时的注册过程时，目标家庭基站网 关收到来自于源基站的重定位 /切换请求消息后， 如果本地没有 UE 的 U-RNTI, 则为 UE分配所述 U-RNTI。
12、 根据权利要求 11所述的系统， 其特征在于， 所述反馈单元， 进一 步用于目标家庭基站网关通过重定位请求消息将所述 U-RNTI反馈给目标 家庭基站。
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