WO2010075652A1

WO2010075652A1 - Redirection method and system

Info

Publication number: WO2010075652A1
Application number: PCT/CN2008/073911
Authority: WO
Inventors: 王笛; 刘霖; 王静; 黄春
Original assignee: 中兴通讯股份有限公司
Priority date: 2008-12-31
Filing date: 2008-12-31
Publication date: 2010-07-08

Abstract

The present invention discloses a redirection method and system, wherein said method includes: a gateway receives the first redirection request from source Home NodeB (HNB), wherein the ID of source HNB, the ID of terminal and the ID of target HNB are carried in the first redirection request; according to the parameter in the redirection request, the gateway judges whether the terminal is allowed to access the target HNB; if the judgment result is yes, the gateway sends the second redirection request to the target HNB in order to make the target HNB perform handoff. By employing the technical scheme of the present invention, the redirection processing procedure can be simplified and the load of core network can be reduced.

Description

重定向方法和*** Redirection method and system

技术领域本发明涉及通信领域，尤其涉及一种重定向方法和***。背景技术家用基站是一种小型、低功率的基站，可以部署在家庭及办公室等室内场所，其主要作用是给用户提供更高的业务速率，并降低使用高速率服务所需要的费用，弥补现有的分布式蜂窝无线通信***覆盖不足的问题。可以看出，家用基站具有价格便宜、使用便捷、低功率输出、即插即用等优点。在具体操作过程中，家用基站用户是通过家用基站接入网（ Home NodeB Access Network, 简称为 HNB AN ) 连接到核心网（ Core Network, 简称为 CN ) 网络的。图 1描述了家用基站的网络连接关系，如图 1所示， HNB AN 包括家用基站（ Home NodeB , 简称为 HNB )和家用基站网关（ Home NodeB Gateway , 简称为 HNB GW ), 其中， HNB GW用于-睑证家用基站的安全性，处理家用基站的注册和接入控制，对家用基站进行运行维护管理，根据运营商要求配置和控制家用基站，负责交换 CN和家用基站的数据，核心网通过 HNB GW与 HNB进行通信。网络侧对家用基站的用户设备（User Equipment, 简称为 UE )使用 HNB 之前，需要对 UE进行接入控制，接入控制可以分为两种机制：一种是基于家用基站可接入用户来进行接入控制，这种机制可在 HNB GW或 HNB进行实施，其中，该机制用于 pre-rel8版本的接入，即不支持闭合用户组（ Closed Subscriber Group, 简称为 CSG )的 UE; —种是基于 CSG的可接入用户来进行接入控制，这种机制可在 CN中进行实施，其中，该机制用于 rel8或后续的版本接入，即支持 CSG的 UE。目前，在 3G UTRAN 的标准中，无线接入网络应用部分协议 ( Radio Access Network Application Part, 简称为 RANAP ) 支持跨 RNC切换 ¾ϊ程，图 2描述了相关技术中宏蜂窝***的跨 RNC切换过程，如图 2所示，主要包括以下处理 (步骤 201至步骤 215 )。步骤 201 , 源无线网络控制器（ Radio Network Control , 简称为 RNC ) 要求 UE进行切换测量， UE向源 RNC上 4艮测量结果后，源 RNC对测量结果进行判决，决定发起切换流程。步骤 202 , 源 RNC向 CN发送 RANAP的重定向需求消息。步骤 203 , CN向目标 RNC转发上述 RANAP的重定向请求消息，进行跨 RNC的切换流程。步骤 204 , 目标 RNC和 CN之间建立 RAB 载。步骤 205 , 目标 RNC向 CN发送 RANAP的重定向请求确认消息。步骤 206, CN向源 RNC转发上述 RANAP的重定向命令消息，继续切换流程。步骤 207,源 RNC向 UE发送 RRC消息（例如物理信道重配置消息等），进行无线侧的切换流程。步骤 208至步骤 209,源 RNC通过 CN向目标 RNC发送 SRNC上下文。步骤 210 , 目标 RNC检测到 UE。步骤 211 , 目标 RNC向 CN发送 RANAP的重定向检测消息。步骤 212, 目标 RNC接收到 UE发送的 RRC消息（例如物理信道重配置消息等）。步骤 213 , 目标 RNC向 CN发送 RANAP的重定向完成消息。步骤 214, CN更新 PDP上下文。步骤 215 , 源 RNC与 CN之间完成资源释放和信息更新流程，具体包括：释放 Iu连接等。由于家用基站主要应用于大中型企业和商场中，如果覆盖空间较大，则需要连续布置多个家用基站，为了证通话质量， UE 经常需要进行家用基站之间的切换。这样，基于图 2所描述的接入控制机制，每次切换都需要与 CN 进行信息交互，而且， UE在不同 HNB之间进行切换时，需要在新的 HNB 上进行接入控制才能完成切换流程，由于 HNB数量众多，通过上述方法进行切换，会导致切换处理流程复杂，并对 CN产生较大的负荷。发明内容考虑到相关技术中存在的终端在家用基站间进行切换时，导致切换处理流程复杂，且对 CN产生较大的负荷的问题而提出本发明，为此，本发明的主要目的在于提供一种重定向方法及***，以解决上述问题。才艮据本发明的一个方面，提供一种重定向方法，该方法用于终端从源家用基站切换到目标家用基站，其中，源家用基站与目标家用基站归属于相同的网关。根据本发明的重定向方法包括：网关接收来自源家用基站的第一重定向请求，其中，第一重定向请求中携带有源家用基站的标识、终端的标识、目标家用基站的标识；网关根据重定向请求中的参数，判断是否允许终端接入目标家用基站；如果判断结果为是，网关向目标家用基站发送第二重定向请求，以使目标家用基站进行切换。其中，网关根据第一重定向请求判断是否允许终端接入目标家用基站的处理包括：网关根据终端的标识判断终端是否支持闭合用户组接入；在判断终端支持闭合用户组接入的情况下，网关根据源家用基站的标识和目标家用基站的标识，判断源家用基站与目标家用基站是否归属于相同的闭合用户组，如果判断结果为是，则允许终端接入目标家用基站；否则，网关向核心网发送接入控制请求消息，其中，接入控制请求消息中携带有终端的标识和目标家用基站归属的闭合用户组标识，核心网根据保存的终端允许接入的闭合用户组的列表，判断目标家用基站归属的闭合用户组是否允许终端接入，并将判断结果返回给网关。其中，在判断终端不支持闭合用户组接入的情况下，网关根据保存的目标家用基站允许接入的终端列表，判断目标家用基站是否允许终端接入目标家用基站。优选地，确定目标家用基站归属的闭合用户组标识的处理包括：在目标家用基站向网关的注册过程中，将其所归属的闭合用户组的标识发送给网关，网关保存目标家用基站的标识与闭合用户组的标识的对应关系。其中，第二重定向请求包括：源家用基站的标识、终端的标识、目标家用基站的标识。优选地，第一重定向请求包括以下之一：无线接入网络应用部分协议的重定向请求，无线网络子***应用部分协议的增强重定向请求、家用基站应用部分协议的重定向请求、无线接入网络应用部分的用户适配协议的重定向请求。并且，如果第一重定向请求为无线接入网络应用部分协议的重定向请求，则第一重定向请求的结构与第二重定向请求的结构不同；如果第一重定向请求为无线网络子***应用部分协议的增强重定向请求，则第一重定向请求的结构与第二重定向请求的结构相同；如果第一重定向请求为家用基站应用部分协议的重定向请求或无线接入网络应用部分的用户适配协议的重定向请求，则第一重定向请求的结构与第二重定向请求的结构相同或不同。才艮据本发明的另一个方面，提供一种重定向***。根据本发明的重定向***包括：收发模块，用于接收来自源家用基站的第一重定向请求，其中，第一重定向请求中携带有源家用基站的标识、终端的标识、目标家用基站的标识；判断模块，用于根据重定向请求中的参数，判断是否允许终端接入目标家用基站；发送模块，用于向目标家用基站发送第二重定向请求，以使目标家用基站进行切换。其中，上述判断模块包括：第一判断子模块，用于才艮据终端的标识判断终端是否支持闭合用户组接入；第二判断子模块，用于根据源家用基站的标识和目标家用基站的标识，判断源家用基站与目标家用基站是否归属于相同的闭合用户组；第三子判断模块，用于判断闭合用户组是否允许终端接入闭合用户组；第四判断子模块，用于判断目标家用基站是否允许终端接入目标家用基站；调用子模块，如果第二判断子模块或第三子判断模块或第四子模块的判断结果为是，则调用发送模块。其中，第二重定向请求包括：源家用基站的标识、终端的标识、目标家用基站的标识。其中，如果第一重定向请求为无线接入网络应用部分协议的重定向请求，则第一重定向请求的结构与第二重定向请求的结构不同；如果第一重定向请求为无线网络子***应用部分协议的增强重定向请求，则第一重定向请求的结构与第二重定向请求的结构相同；如果第一重定向请求为家用基站应用部分协议的重定向请求或无线接入网络应用部分的用户适配协议的重定向请求，则第一重定向请求的结构与第二重定向请求的结构相同或不同。通过本发明的上述至少一个技术方案，在网关内部对归属于该网关的多个家用基站进行重定向处理，不需要通过核心网进行消息的交互，相比于现有技术，本发明可以简化重定向处理流程，并减小核心网的负荷。附图说明附图用来提供对本发明的进一步理解，并且构成说明书的一部分，与本发明的实施例一起用于解释本发明，并不构成对本发明的限制。在附图中：图 1是根据相关技术的家用基站的网络连接结构图；图 2是根据相关技术的宏蜂窝***中跨 RNC的切换流程图；图 3是根据相关技术的 HNB间切换示意图；图 4是才艮据本发明方法实施例的重定向方法的流程图；图 5是才艮据本发明方法实施例的重定向方法的详细处理流程图；图 6是才艮据本发明实施例的 HNB GW采用 RANAP消息对 pre-rel8版本接入的 UE进行重定向处理的流程图；图 7是才艮据本发明实施例的 HNB GW采用 RANAP消息对 rel8或后续版本接入的 UE进行重定向处理的流程图；图 8是才艮据本发明实施例的 HNB GW采用 HNBAP (或 RUA ) 消息对 pre-rel8版本接入的 UE进行重定向处理的流程图；图 9是才艮据本发明实施例的 HNB GW采用 HNBAP (或 RUA ) 消息对 rel8或后续版本接入的 UE进行重定向处理的流程图；图 10是才艮据本发明实施例的 HNB GW采用新增 HNBAP消息对 pre-rel8 版本接入的 UE进行重定向处理的流程图；图 11是才艮据本发明实施例的 HNB GW采用新增 HNBAP消息对 rel8 或后续版本接入的 UE进行重定向处理的流程图；图 12是才艮据本发明***实施例的重定向***的结构才匡图；图 13是才艮据本发明***实施例的重定向***的优选结构框图。具体实施方式功能相克述由于家用基站（HNB ) 主要的应用场景为大中型企业和商场，为了保证用户通话质量，支持 HNB之间的重定向（切换）处理是非常必要的。而且，在网络规划中，为了配置优化和统一管理，属于同一企业或商场的 HNB 会尽量分配到相同的 CSG群组。由于在 HNB在切换过程中加入接入控制会造成切换流程较复杂，导致切换时机的延误，且图 2所示的切换流程都需要与 CN进行信息交互，增加了 CN的负荷。基于此，本发明提供了一种改进的重定向处理方法，对图 2所示的重定向处理流程进行优化，主要思路是：在网关内部对归属于该网关的多个家用基站进行重定向处理，不需要通过核心网进行消息的交互，可以简化重定向处理流程，并减小核心网的负荷。为了便于理解本发明实施例，在说明本发明实施例之前，首先结合附图 3对现有技术中 HNB的结构框架图进行描述，如图 3所示， HNB之间的切换可以分为两类，其中， typel 是 HNB GW 内部切换，即进行切换的两个 HNB归属于相同的 HNB GW; type2是 HNB GW之间的切换，即进行切换的两个 HNB归属于不同的 HNB GW。以下结合附图对本发明的优选实施例进行说明，应当理解，此处所描述的优选实施例仅用于说明和解释本发明，并不用于限定本发明。而且，在不沖突的情况下，本申请中的实施例及实施例中的特征可以相互组合。需要说明的是，如果没有特殊说明，下文中所述的第一重定向请求中携带的参数包括：源家用基站的标识、终端的标识、目标家用基站的标识，所述的第二重定向请求中携带的参数也包括：源家用基站的标识、终端的标识、目标家用基站的标识，虽然第一重定向请求和第二重定向请求中携带的参数可能相同，但根据重定向处理所使用的协议，第一重定向请求和第二重定向请求的结构可能相同，也可能不同，下文会对此进行说明。方法实施例才艮据本发明实施例，提供了一种重定向（切换）方法。图 4是根据本发明实施例的重定向方法的流程图，该方法用于终端从源家用基站切换到目标家用基站，其中，源家用基站与目标家用基站归属于相同的网关，需要说明的是，为了便于描述，在图 4中以步骤的形式示出并描述了本发明的方法实施例的技术方案，在图 4中所示出的步骤可以在诸如一组计算机可执行指令的计算机***中执行。虽然在图 4中示出了逻辑顺序，但是在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤。如图 4所示，该方法包括以下步骤 (步骤 S402至步骤 S406 )。步骤 S402, 网关接收来自源家用基站的第一重定向请求，其中，第一重定向请求中携带有源家用基站的标识、终端的标识、目标家用基站的标识，并且，该网关可以为上文所述的家用基站网关；步骤 S404, 网关根据重定向请求中的参数，确定是否允许终端接入目标家用基站；步骤 S406, 在确定为是的情况下，网关向目标家用基站发送第二重定向请求，以使目标家用基站进行切换。在实施本发明实施例之前，各家用基站会向网关进行注册，在注册过程中，家用基站会向其归属的闭合用户组的标识发送给网关，网关会保存家用基站的标识与其归属的闭合用户组的标识之间的对应关系。并且，网关会保存各家用基站允许接入的终端列表。在具体实施过程中，网关接收来自源家用基站的第一重定向请求，其中，第一重定向请求中携带有源家用基站的标识、终端的标识、目标家用基站的标识，首先，网关才艮据终端的标识判断终端是否支持闭合用户组接入，如果判断结果为否，即，网关才艮据终端的标识判断出终端不支持闭合用户组接入，网关会根据保存的目标家用基站允许接入的终端列表，判断目标家用基站是否允许终端接入目标家用基站，如果目标家用基站允许该终端接入，即该终端存在于目标家用基站允许接入的终端列表上，则向目标家用基站发送第二重定向请求，以使所述目标家用基站进行切换，如果目标家用基站不允许该终端接入，即该终端不存在于目标家用基站允许接入的终端列表上，网关会终止重定向流程。如果判断结果为是，即，网关才艮据终端的标识判断出终端支持闭合用户组接入，网关会居源家用基站的标识和目标家用基站的标识，判断源家用基站与目标家用基站是否归属于相同的闭合用户组，如果源家用基站与目标家用基站归属于相同的闭合用户组，则允许终端接入目标家用基站，并向目标家用基站发送第二重定向请求，以使所述目标家用基站进行切换。如果源家用基站与目标家用基站归属于不同的闭合用户组，网关会向核心网发送接入控制请求消息，其中，接入控制请求消息中携带有终端的标识和目标家用基站归属的闭合用户组标识，核心网根据保存的终端允许接入的闭合用户组的列表，判断目标家用基站归属的闭合用户组（为了描述清楚，将该闭合用户组称为闭合用户组 1 ) 是否允许该终端接入，并将判断结果返回给网关；如果闭合用户组 1允许该终端接入，即该终端存在于闭合用户组 1 允许接入的终端列表上，网关会向目标家用基站发送第二重定向请求，以使目标家用基站进行切换，如果闭合用户组 1不允许该终端接入，即该终端不存在于闭合用户组 1允许接入的终端列表上，网关会终止重定向流程。通过本发明实施例提供的技术方案，在网关内部对归属于该网关的多个家用基站进行重定向处理，不需要通过核心网进行消息的交互，相比于现有技术，本发明简化了重定向处理流程，减小了核心网的负荷。下面结合附图 5对 HNB之间的重定向方法进行详细说明，如图 5所示，具体包括以下处理：步骤 501 , 源 HNB通过测量判决发起切换，向 HNB GW发送重定向请求。步骤 502, HNB GW上对 UE的切换类型进行判断，如果是 HNB GW 的内部切换，则 CN不需要参与切换流程控制，此时，进入到步骤 504; 如果是 HNB GW的内部切换，则 CN需要参与切换流程控制，此时，进入到步骤 503。步骤 503 , HNB GW将重定向请求转发给 CN消息，执行图 2所示的流程。步骤 504, HNB GW判断 UE接入类型，判断 UE支持 CSG接入，如果判断结果为是，进入到步骤 505; 否则，进入到步骤 508。步骤 505 , UE是基于 rel8或后续的版本接入（即 UE支持 CSG接入）， HNB GW判断该重定向处理是否需要与 CN进行交互（例如接入控制，更新位置区信息等），如果判断结果为是，进入到步骤 506; 否则，进入到步骤 507。步骤 506, 需要则与 CN完成交互，完成与 CN的交互后，进入到步骤The present invention relates to the field of communications, and in particular, to a redirection method and system. BACKGROUND OF THE INVENTION A home base station is a small, low-power base station that can be deployed in indoor places such as homes and offices. Its main function is to provide users with higher service rates and reduce the cost of using high-rate services. Some distributed cellular wireless communication systems have insufficient coverage. It can be seen that the home base station has the advantages of low price, convenient use, low power output, and plug and play. In the specific operation, the home base station user is connected to the core network (CN network) through a Home NodeB Access Network (HNB AN). FIG. 1 illustrates a network connection relationship of a home base station. As shown in FIG. 1, the HNB AN includes a Home NodeB (HNB for short) and a Home NodeB Gateway (HNB GW for short), where the HNB GW is used. The security of the home base station is handled, the registration and access control of the home base station are handled, the operation and maintenance management of the home base station is performed, the home base station is configured and controlled according to the operator's requirements, and the data of the CN and the home base station is exchanged, and the core network passes The HNB GW communicates with the HNB. Before the user equipment (User Equipment, UE for short) of the home base station uses the HNB, the access control needs to be performed on the UE. The access control can be divided into two mechanisms: Access control, this mechanism can be implemented in the HNB GW or HNB, where the mechanism is used for the pre-rel8 version of the access, that is, the UE that does not support the Closed Subscriber Group (CSG); The CSG-based access user is used for access control. This mechanism can be implemented in the CN. The mechanism is used for rel8 or subsequent version access, that is, UE supporting CSG. Currently, in the standard of 3G UTRAN, the Radio Access Network Application Part (RANAP) supports cross-RNC handover, and FIG. 2 depicts the cross-RNC handover process of the macrocellular system in the related art. As shown in FIG. 2, the following processing is mainly included (step 201 to step 215). Step 201: The source radio network controller (RNC) requests the UE to perform handover measurement. After the UE sends the measurement result to the source RNC, the source RNC decides the measurement result, and determines to initiate the handover process. Step 202: The source RNC sends a RANAP redirection requirement message to the CN. Step 203: The CN forwards the redirection request message of the RANAP to the target RNC, and performs a handover process across the RNC. Step 204: Establish an RAB bearer between the target RNC and the CN. Step 205: The target RNC sends a RANAP redirection request acknowledgement message to the CN. Step 206: The CN forwards the redirection command message of the RANAP to the source RNC, and continues the handover process. Step 207: The source RNC sends an RRC message (for example, a physical channel reconfiguration message, etc.) to the UE, and performs a handover procedure on the radio side. Step 208 to step 209, the source RNC sends the SRNC context to the target RNC through the CN. Step 210: The target RNC detects the UE. Step 211: The target RNC sends a redirection detection message of the RANAP to the CN. Step 212: The target RNC receives an RRC message (for example, a physical channel reconfiguration message, etc.) sent by the UE. Step 213: The target RNC sends a RANAP redirection complete message to the CN. In step 214, the CN updates the PDP context. Step 215: The resource release and information update process is completed between the source RNC and the CN, and specifically includes: releasing an Iu connection. Since the home base station is mainly used in large and medium-sized enterprises and shopping malls, if the coverage space is large, multiple home base stations need to be arranged consecutively. In order to prove the call quality, the UE often needs to perform handover between the home base stations. In this way, based on the access control mechanism described in FIG. 2, information exchange with the CN is required for each handover, and when the UE switches between different HNBs, access control needs to be performed on the new HNB to complete the handover process. Due to the large number of HNBs, Line switching will result in a complicated switching process and a large load on the CN. SUMMARY OF THE INVENTION The present invention has been made in view of the problem that the terminal existing in the related art switches between home base stations, resulting in a complicated handover process and a large load on the CN. Therefore, the main object of the present invention is to provide a A redirection method and system to solve the above problem. According to an aspect of the present invention, a redirection method is provided for a terminal to handover from a source home base station to a target home base station, wherein the source home base station and the target home base station belong to the same gateway. The redirection method according to the present invention includes: the gateway receiving the first redirection request from the source home base station, where the first redirection request carries the identifier of the active home base station, the identifier of the terminal, and the identifier of the target home base station; The parameter in the redirection request determines whether the terminal is allowed to access the target home base station; if the determination result is yes, the gateway sends a second redirection request to the target home base station to enable the target home base station to perform handover. The process of determining, by the gateway, whether the terminal is allowed to access the target home base station according to the first redirection request includes: determining, by the gateway, whether the terminal supports the closed user group access according to the identifier of the terminal; The gateway determines, according to the identifier of the source home base station and the identifier of the target home base station, whether the source home base station and the target home base station belong to the same closed subscriber group. If the determination result is yes, the terminal is allowed to access the target home base station; otherwise, the gateway The core network sends an access control request message, where the access control request message carries the identifier of the terminal and the closed user group identifier of the target home base station, and the core network determines according to the list of closed user groups that the terminal is allowed to access. Whether the closed subscriber group to which the target home base station belongs allows the terminal to access, and returns the judgment result to the gateway. In the case that the terminal does not support the closed user group access, the gateway determines, according to the saved terminal list that the target home base station allows access, whether the target home base station allows the terminal to access the target home base station. Preferably, the process of determining the closed subscriber group identity of the target home base station includes: sending, in the registration process of the target home base station to the gateway, the identifier of the closed subscriber group to which the target home base station belongs, the gateway saves the identifier of the target home base station and Close the correspondence of the user group's identity. The second redirection request includes: an identifier of the source home base station, an identifier of the terminal, and an identifier of the target home base station. Preferably, the first redirection request includes one of the following: a redirection request of the radio access network application part protocol, an enhanced redirection request of the radio network subsystem application part protocol, a redirection request of the home base station application part protocol, and a wireless connection A redirection request for the user adaptation protocol into the network application part. And, if the first redirection request is a redirection request of the radio access network application part protocol, the structure of the first redirection request is different from the structure of the second redirection request; if the first redirection request is a radio network subsystem Applying the enhanced redirect request of the partial protocol, the structure of the first redirect request is the same as the structure of the second redirect request; if the first redirect request is a redirect request of the partial base station application part of the home base station or a wireless access network application part The user adapts the redirection request of the protocol, and the structure of the first redirection request is the same as or different from the structure of the second redirection request. According to another aspect of the present invention, a redirection system is provided. The redirection system according to the present invention includes: a transceiver module, configured to receive a first redirection request from a source home base station, where the first redirection request carries an identifier of the active home base station, an identifier of the terminal, and a target home base station The determining module is configured to determine, according to the parameter in the redirect request, whether the terminal is allowed to access the target home base station, and the sending module, configured to send the second redirect request to the target home base station, so that the target home base station performs the handover. The determining module includes: a first determining submodule, configured to determine whether the terminal supports closed user group access according to the identifier of the terminal; and a second determining submodule, configured to use, according to the identifier of the source home base station and the target home base station Identifying, determining whether the source home base station and the target home base station belong to the same closed user group; the third sub-determination module is configured to determine whether the closed user group allows the terminal to access the closed user group; and the fourth determining sub-module is configured to determine the target Whether the home base station allows the terminal to access the target home base station; the sub-module is called, and if the judgment result of the second judgment sub-module or the third sub-determination module or the fourth sub-module is YES, the sending module is called. The second redirection request includes: an identifier of the source home base station, an identifier of the terminal, and an identifier of the target home base station. If the first redirection request is a redirection request of the radio access network application part protocol, the structure of the first redirection request is different from the structure of the second redirection request; if the first redirection request is a radio network subsystem Applying the enhanced redirect request of the partial protocol, the structure of the first redirect request is the same as the structure of the second redirect request; if the first redirect request is a home base station With the redirection request of the partial protocol or the redirection request of the user adaptation protocol of the radio access network application part, the structure of the first redirection request is the same as or different from the structure of the second redirection request. Through the foregoing at least one technical solution of the present invention, the redirection process is performed on multiple home base stations belonging to the gateway in the gateway, and the message interaction is not required through the core network, and the present invention can be simplified compared with the prior art. Orient the processing flow and reduce the load on the core network. The drawings are intended to provide a further understanding of the invention, and are intended to be a part of the description of the invention. 1 is a network connection structure diagram of a home base station according to the related art; FIG. 2 is a flow chart of handover across an RNC in a macrocellular system according to the related art; FIG. 3 is a schematic diagram of handover between HNBs according to the related art; 4 is a flow chart of a redirection method according to an embodiment of the method of the present invention; FIG. 5 is a detailed process flow diagram of a redirection method according to an embodiment of the method of the present invention; FIG. 6 is an embodiment of the present invention. The HNB GW uses the RANAP message to perform redirection processing on the UE accessed by the pre-rel8 version. FIG. 7 is a diagram of the HNB GW according to the embodiment of the present invention using the RANAP message to re-enter the UE accessed by the rel8 or subsequent versions. Flowchart of the directional processing; FIG. 8 is a flowchart of the redirection process performed by the HNB GW (or RUA) message to the UE accessed by the pre-rel8 version according to the embodiment of the present invention; The HNB GW of the embodiment of the present invention uses a HNBAP (or RUA) message to perform redirection processing on a UE accessed by rel8 or a subsequent version. FIG. 10 is a diagram of a HNB GW using a new HNBAP message pair according to an embodiment of the present invention. UE with -rel8 version access Line redirection process flowchart; FIG. 11 is only HNB GW according Gen embodiment of the present invention employs a new message rel8 HNBAP or later access a UE redirection processing flowchart; Figure 12 is a block diagram showing the structure of a redirection system according to an embodiment of the system of the present invention; Figure 13 is a block diagram showing a preferred configuration of a redirection system according to an embodiment of the system of the present invention. The main application scenarios of the home base station (HNB) are large and medium-sized enterprises and shopping malls. In order to ensure the quality of user calls, it is necessary to support redirection (handover) processing between HNBs. Moreover, in network planning, for configuration optimization and unified management, HNBs belonging to the same enterprise or shopping mall will try to be assigned to the same CSG group. The addition of the access control during the handover process of the HNB causes the handover process to be complicated, resulting in delays in the handover timing, and the handover procedure shown in Figure 2 requires information exchange with the CN, increasing the load on the CN. Based on this, the present invention provides an improved redirection processing method, which optimizes the redirection processing flow shown in FIG. 2, and the main idea is: performing redirection processing on multiple home base stations belonging to the gateway within the gateway. The interaction of messages through the core network is not required, which can simplify the redirection process and reduce the load on the core network. In order to facilitate the understanding of the embodiments of the present invention, prior to the description of the embodiments of the present invention, the structural frame diagram of the HNB in the prior art is first described with reference to FIG. 3. As shown in FIG. 3, the switching between HNBs can be divided into two categories. The type 1 is the HNB GW internal handover, that is, the two HNBs that perform the handover belong to the same HNB GW; the type 2 is the handover between the HNB GWs, that is, the two HNBs that perform the handover belong to different HNB GWs. The preferred embodiments of the present invention are described in the following with reference to the accompanying drawings, which are intended to illustrate and illustrate the invention. Moreover, the features of the embodiments and the embodiments in the present application may be combined with each other without conflict. It should be noted that, if not specified, the parameters carried in the first redirection request described in the following include: an identifier of the source home base station, an identifier of the terminal, an identifier of the target home base station, and the second redirect request. The parameters carried in the method include: the identifier of the source home base station, the identifier of the terminal, and the identifier of the target home base station. Although the parameters carried in the first redirect request and the second redirect request may be the same, the The protocol, the structure of the first redirect request and the second redirect request may be the same or different, as will be explained below. Method Embodiments According to an embodiment of the present invention, a redirection (switching) method is provided. 4 is a flowchart of a redirection method for a terminal to switch from a source home base station to a target home base station, where the source home base station and the target home base station belong to the same gateway, and the description is For ease of description, the technical solution of the method embodiment of the present invention is shown and described in the form of steps in FIG. 4, and the steps shown in FIG. 4 may be in a computer system such as a set of computer executable instructions. carried out. Although the logical order is illustrated in FIG. 4, in some cases, the steps shown or described may be performed in an order different than that herein. As shown in FIG. 4, the method includes the following steps (step S402 to step S406). Step S402, the gateway receives the first redirection request from the source home base station, where the first redirection request carries the identifier of the active home base station, the identifier of the terminal, and the identifier of the target home base station, and the gateway may be the above The home base station gateway; Step S404, the gateway determines, according to parameters in the redirect request, whether the terminal is allowed to access the target home base station; Step S406, if the determination is yes, the gateway sends the second redirect to the target home base station. Request to make the target home base station switch. Before implementing the embodiment of the present invention, each home base station registers with the gateway. During the registration process, the home base station sends the identifier of the closed subscriber group to the gateway, and the gateway saves the identity of the home base station and the closed user to which the home station belongs. The correspondence between the identifiers of the groups. Moreover, the gateway saves a list of terminals that each home base station is allowed to access. In a specific implementation process, the gateway receives the first redirection request from the source home base station, where the first redirection request carries the identifier of the active home base station, the identifier of the terminal, and the identifier of the target home base station. First, the gateway is configured. According to the identifier of the terminal, it is determined whether the terminal supports the closed user group access. If the judgment result is no, that is, the gateway determines that the terminal does not support the closed user group access according to the identifier of the terminal, and the gateway allows the connection according to the saved target home base station. Entering the terminal list, determining whether the target home base station allows the terminal to access the target home base station, and if the target home base station allows the terminal to access, that is, the terminal exists on the terminal list allowed by the target home base station, sending to the target home base station a second redirection request, so that the target home base station performs handover. If the target home base station does not allow the terminal to access, that is, the terminal does not exist on the terminal list that the target home base station allows access, the gateway terminates the redirection process. . If the judgment result is yes, that is, the gateway determines that the terminal supports the closed user group access according to the identifier of the terminal, and the gateway identifies the identity of the home base station and the identity of the target home base station, and determines whether the source home base station and the target home base station belong to In the same closed subscriber group, if the source home base station and the target home base station belong to the same closed subscriber group, the terminal is allowed to access the target home base station, and a second redirect request is sent to the target home base station to enable the target home base The base station performs handover. If the source home base station and the target home base station belong to different closed subscriber groups, the gateway sends an access control request message to the core network, where the access control request message carries the identifier of the terminal and the closed subscriber group to which the target home base station belongs. Identifying, the core network determines, according to the list of closed user groups that the terminal is allowed to access, the closed user group to which the target home base station belongs (for the sake of clarity, the closed user group is referred to as closed user group 1), whether the terminal is allowed to access And returning the judgment result to the gateway; if the closed user group 1 allows the terminal to access, that is, the terminal exists on the list of terminals allowed to be accessed by the closed user group 1, the gateway sends a second redirect request to the target home base station, In order to make the target home base station perform handover, if the closed user group 1 does not allow the terminal to access, that is, the terminal does not exist on the list of terminals allowed to be accessed by the closed user group 1, the gateway terminates the redirection process. The technical solution provided by the embodiment of the present invention performs redirection processing on multiple home base stations belonging to the gateway in the gateway, and does not need to perform message interaction through the core network. Compared with the prior art, the present invention simplifies The directed processing process reduces the load on the core network. The redirection method between the HNBs is described in detail below with reference to FIG. 5, as shown in FIG. 5, which specifically includes the following processing: Step 501: The source HNB initiates handover by using a measurement decision, and sends a redirection request to the HNB GW. Step 502: The HNB GW determines the handover type of the UE. If the HNB GW performs internal handover, the CN does not need to participate in the handover process control. At this time, the process proceeds to step 504. If the HNB GW performs internal handover, the CN needs to be performed. Participate in the switching process control, and at this time, it proceeds to step 503. Step 503: The HNB GW forwards the redirect request to the CN message, and performs the process shown in FIG. 2. Step 504: The HNB GW determines the UE access type, determines that the UE supports CSG access, and if the determination result is yes, proceeds to step 505; otherwise, proceeds to step 508. Step 505: The UE is based on rel8 or subsequent version access (that is, the UE supports CSG access), and the HNB GW determines whether the redirection process needs to interact with the CN (eg, access control, update location area information, etc.), if The result is yes, proceeding to step 506; otherwise, proceeding to step 507. Step 506, the interaction with the CN is completed, and after the interaction with the CN is completed, the process proceeds to the step.

507。步骤 507, 无需与 CN交互（例如：目标 HNB与源 HNB处于相同的位置区无需更新位置区信息，且属于相同的 CSG群组无需进行接入控制等等），则继续完成 HNB GW内部切换流程，执行图 4所示的处理。步骤 S508 , UE是基于 pre-rel8版本（即 UE不支持 CSG接入）进行接入控制，判断是否需要与 CN进行交互（例如，更新位置区信息等等），如果判断结果为是，进入到步骤 509; 否则，进入到步骤 510。步骤 509, 需要则与 CN完成交互，完成与 CN的交互后，进入到步骤507. Step 507: It is not necessary to interact with the CN (for example, the target HNB and the source HNB are in the same location area do not need to update the location area information, and the same CSG group does not need to perform access control, etc.), and then complete the HNB GW internal handover procedure. , the processing shown in FIG. 4 is performed. Step S508: The UE performs access control based on the pre-rel8 version (that is, the UE does not support CSG access), determines whether it is necessary to interact with the CN (for example, updates the location area information, etc.), and if the judgment result is yes, enters Step 509; otherwise, proceed to step 510. Step 509, the interaction with the CN is completed, and after the interaction with the CN is completed, the process proceeds to the step.

510。步骤 510, 不需要与 CN交互，在 HNB GW上对 UE进行接入控制，并继续 HNB GW内部切换流程，执行图 4所示的处理。步骤 511 , 完成 UE在目标 HNB的注册，及 UE在源 HNB的注册，切换完成。依照上述处理过程，可以看出，在 HNB GW内部完成的 HNB间的切换过程中，无需 CN进行切换流程控制，减小了 CN的负荷；对于 pre-rel8 版本的 UE接入，在切换过程中对 UE进行接入控制，在切换完成后进行注册；对于 rel8或后续的版本接入的 UE, 如果 HNB GW判断切换的源 HNB 和目标 HNB属于同一 CSG群组，则可以省略接入控制过程。其中， HNB GW完成重定向 ¾ϊ程可采用以下几种方式：基于现有的无线接入网络应用 4ρ分十办议 ( Radio Access Network Application Part, 简称为 RANAP )的重定向流程进行处理、基于 RANAP协议和无线网络子***应用 4p分十办议 ( Radio Network Subsystem Application Part, 简称为 RNSAP ) 的增强重定向流程进行处理、基于家用基站应用部分协议（ Home NodeB Application Part, HNBAP ) 对新增重定向流程、基于 RANAP用户适配十办议 ( RANAP User Adaptation, RUA ) 对新增重定向流程。其中，如果是基于 RANAP 的重定向处理，则第一重定向请求与第二重定向请求的结构不同， HNB GW需要对第一重定向请求中的参数进行重新构造，生成第二重定向请求；如果是基于 RNSAP的重定向处理，则第一重定向请求与第二重定向请求的结构相同， HNB GW需要将第一重定向请求转发给目标 HNB; 特殊地，对于基于 HNBAP和 RANAP用户适配协议的重定向处理，第一重定向请求与第二重定向请求的结构可以相同，也可以不同。下面针对重定向过程中使用的不同协议，结合附图对本发明实施例进行详细说明。图 6和图 7是基于 HNB GW采用现有 RANAP协议的重定向流程，其中， HNB与 HNB GW之间的 RANAP消息传递由 RUA十办议的消息负责载。图 6描述了 HNB GW对 pre-rel8版本（非 CSG, 即终端不支持 CSG接入入的 UE进行重定向处理的流程，该实例中采用 HNB GW解析 RANAP 消息的方式。步骤 601 , 源 HNB要求 UE进行切换测量， UE上报测量结果后，源510. Step 510: The UE does not need to interact with the CN, performs access control on the UE on the HNB GW, and continues the HNB GW internal handover procedure, and performs the processing shown in FIG. 4 . Step 511: Complete registration of the UE in the target HNB, and registration of the UE in the source HNB, and the handover is completed. According to the above process, it can be seen that during the handover process between the HNBs completed by the HNB GW, the CN does not need to perform the handover process control, and the load of the CN is reduced. For the pre-rel8 version of the UE access, during the handover process. The access control is performed on the UE, and the registration is performed after the handover is completed. If the HNB GW determines that the source HNB and the target HNB of the handover belong to the same CSG group, the access control process may be omitted. The HNB GW can complete the redirection process in the following ways: Based on the existing radio access network application, the radio access network application part (RANAP) redirection process is processed, based on RANAP The protocol and the wireless network subsystem apply the enhanced redirection process of the Radio Network Subsystem Application Part (RNSAP), and the home base station application part (HNBAP) is added to the new redirect. Process, based on RANAP user adaptation ten (RANAP User Adaptation, RUA) For the new redirect process. If the RANAP-based redirection process is performed, the first redirection request is different from the second redirection request, and the HNB GW needs to reconstruct the parameters in the first redirection request to generate a second redirection request. If the RNSAP-based redirection process is performed, the first redirection request is the same as the second redirection request, and the HNB GW needs to forward the first redirection request to the target HNB; in particular, to the HNBAP-based and RANAP-based user adaptation. For the redirection process of the protocol, the structure of the first redirection request and the second redirection request may be the same or different. The embodiments of the present invention are described in detail below with reference to the different protocols used in the redirection process. Figure 6 and Figure 7 are redirection procedures based on the existing RANAP protocol of the HNB GW. The RANAP message transmission between the HNB and the HNB GW is carried by the message negotiated by the RUA. FIG. 6 illustrates a procedure for the HNB GW to perform a redirection process on a pre-rel8 version (non-CSG, that is, a UE that does not support CSG access in the terminal, where the HNB GW parses the RANAP message in the example. Step 601, source HNB requirement The UE performs handover measurement, and after the UE reports the measurement result, the source

HNB对测量结果进行判决，决定发起切换流程。步骤 602 ,源 HNB向其归属 HNB GW发送 RANAP的重定向需求消息， HNB GW 居所辖 HNB信息（ HNB注册时 HNB GW获取并保存）判断源 HNB和目标 HNB是否都归属于该 HNB GW。 ( a ), 如果目标 HNB不归属于该 HNB GW, 即源 HNB与目标 HNB 归属于不同的 HNB GW, 则转入步骤 603a; The HNB decides on the measurement result and decides to initiate the handover process. Step 602: The source HNB sends a RANAP redirection request message to the home HNB GW, and the HNB GW occupies the HNB information (the HNB GW acquires and saves when the HNB is registered) to determine whether the source HNB and the target HNB belong to the HNB GW. (a), if the target HNB is not attributed to the HNB GW, that is, the source HNB and the target HNB belong to different HNB GWs, then proceeds to step 603a;

( b ), 如果目标 HNB归属于该 HNB GW, 即源 HNB与目标 HNB归属于相同的 HNB GW, 但需要与 CN交互（如目标 HNB与源 HNB位置区标识不同，需要更新位置区信息等），则转入步骤 603b; ( c ), 如果目标 HNB归属于该 HNB GW, 即源 HNB与目标 HNB归属于相同的 HNB GW, 且不需要与 CN交互，则转入步骤 603c。步骤 603a, HNB GW向 CN转发上述 RANAP的重定向需求消息，进行跨 HNB GW的切换流程。步骤 603b, HNB GW通过 NAS与 CN进行消息交互，例如，更新位置区信息等，消息交互完成后转入步骤 603c。步骤 603c , HNB GW才艮据目标 HNB对应的允许接入的用户列表，对 UE进行接入控制。如果目标 HNB允许该 UE接入，即该 UE存在于目标 HNB 对应的允许接入的用户列表上，贝l HNB GW向目标 HNB发送 RANAP的重定向请求消息，进行 HNB GW内部的切换流程。步骤 604 , 目标 HNB通过 HNB GW与 CN间建立 RAB 载。步骤 605 , 目标 HNB向 HNB GW发送 RANAP的重定向确认消息。步骤 606 , HNB GW向源 HNB发送 RANAP的重定向命令消息，继续切换流程。步骤 607 , 源 HNB向 UE发送 RRC消息（例如，物理信道重配置消息等），进行无线侧的切换流程。步骤 608至 609, 源 HNB向目标 HNB发送 SRNC上下文。步骤 610, 目标 HNB检测到 UE。步骤 611 , 目标 HNB向 HNB GW发送 RANAP的重定向检测消息。步骤 612, 目标 HNB接收到来自 UE的 RRC消息（例如物理信道重配置消息等）。步骤 613 , 目标 HNB向 HNB GW发送 RANAP重定向完成消息， HNB GW在接收到该消息后保存 UE在目标 HNB上的注册信息。步骤 614, HNB GW向 CN转发 RANAP重定向完成消息。步骤 615 , CN更新 PDP上下文。步骤 616, 源 HNB与 HNB GW之间完成资源释放和信息更新流程，具体包括：释放 Iu连接，以及删除 UE在源 HNB上注册信息等。图 7描述了 HNB GW对 rel8或后续版本 (支持 CSG, 即终端支持 CSG 接入）接入的 UE 进行重定向处理的流程，该实例中采用 HNB GW 解析 RANAP消息的方式。步骤 701 , 源 HNB要求 UE进行切换测量， UE上报测量结果后，源 HNB对测量结果进行判决，决定发起切换流程。步骤 702 ,源 HNB向其归属 HNB GW发送 RANAP的重定向需求消息， HNB GW 居所辖 HNB信息（ HNB注册时 HNB GW获取并保存）判断源 HNB和目标 HNB是否都归属于该 HNB GW。如果目标 HNB不归属于该 HNB GW, 即源 HNB与目标 HNB归属于不同的 HNB GW, 则转入步骤 703a; 如果源 HNB和目标 HNB属于相同的 HNB GW,贝l HNB GW才艮据保存的 HNB信息，判断源 HNB和目标 HNB是否属于相同的 CSG群组和相同的位置区（ HNB在注册时将自身 CSG标识和位置区标识提供给 HNB GW保存），具体地，分为以下两种情况： (b), if the target HNB belongs to the HNB GW, that is, the source HNB and the target HNB belong to the same HNB GW, but need to interact with the CN (if the target HNB is different from the source HNB location area identifier, the location area information needs to be updated, etc.) Then, the process proceeds to step 603b; (c), if the target HNB belongs to the HNB GW, that is, the source HNB and the target HNB belong to the same HNB GW, and does not need to interact with the CN, then the process proceeds to step 603c. Step 603a: The HNB GW forwards the redirection request message of the RANAP to the CN, and performs a handover process across the HNB GW. In step 603b, the HNB GW exchanges messages with the CN through the NAS, for example, updating the location area information, etc., and after the message interaction is completed, the process proceeds to step 603c. Step 603c: The HNB GW performs access control on the UE according to the list of allowed users corresponding to the target HNB. If the target HNB allows the UE to access, that is, the UE exists on the user list of the access allowed by the target HNB, the H1HNB GW sends a RANAP redirection request message to the target HNB, and performs a handover procedure inside the HNB GW. Step 604: The target HNB establishes an RAB bearer between the HNB GW and the CN. Step 605: The target HNB sends a RANAP redirect confirmation message to the HNB GW. Step 606: The HNB GW sends a RANAP redirect command message to the source HNB, and continues the handover process. Step 607: The source HNB sends an RRC message (for example, a physical channel reconfiguration message, etc.) to the UE, and performs a handover procedure on the radio side. In steps 608 to 609, the source HNB sends an SRNC context to the target HNB. In step 610, the target HNB detects the UE. Step 611: The target HNB sends a RANAP redirection detection message to the HNB GW. Step 612, the target HNB receives an RRC message (e.g., a physical channel reconfiguration message, etc.) from the UE. Step 613: The target HNB sends a RANAP redirection complete message to the HNB GW, and the HNB GW saves the registration information of the UE on the target HNB after receiving the message. Step 614: The HNB GW forwards the RANAP redirect complete message to the CN. Step 615, the CN updates the PDP context. Step 616: The resource release and information update process is performed between the source HNB and the HNB GW, and specifically includes: releasing the Iu connection, and deleting the UE registration information on the source HNB. FIG. 7 illustrates a procedure for the HNB GW to perform redirection processing on the UE accessed by the rel8 or the subsequent version (supporting the CSG, that is, the terminal supports the CSG access). In this example, the HNB GW is used to parse the RANAP message. Step 701: The source HNB requests the UE to perform handover measurement. After the UE reports the measurement result, the source HNB determines the measurement result, and determines to initiate the handover process. Step 702: The source HNB sends a RANAP redirection request message to the home HNB GW, and the HNB GW occupies the HNB information (the HNB GW acquires and saves when the HNB is registered) to determine whether the source HNB and the target HNB belong to the HNB GW. If the target HNB does not belong to the HNB GW, that is, the source HNB and the target HNB belong to different HNB GWs, go to step 703a; if the source HNB and the target HNB belong to the same HNB GW, the H HNB GW saves the data. The HNB information is used to determine whether the source HNB and the target HNB belong to the same CSG group and the same location area (the HNB provides the CSG identifier and the location area identifier to the HNB GW for saving when registering), specifically, the following two cases: :

( a ), 如果源 HNB和目标 HNB归属于相同的 CSG群组和相同的位置区等等，则无需与 CN交互，转入步骤 703c; (a), if the source HNB and the target HNB belong to the same CSG group and the same location area, etc., then there is no need to interact with the CN, and the process proceeds to step 703c;

( b ), HNB GW需要与 CN进行交互，例如，源 HNB和目标 HNB属于不同的 CSG群组需要进行接入控制，或者目标 HNB与源 HNB位置区标识不同，需要更新位置区信息等，则转入步骤 703b; 步骤 703a, HNB GW向 CN转发 RANAP的重定向需求消息，进行跨 HNB GW的切换流程。步骤 703b, HNB GW采用 NAS消息与 CN进行交互，例如，执行 UE 在目标 HNB的 CSG上的接入控制，或者更新位置区信息等等，消息完成交互则转入步骤 703c。步骤 703c, HNB GW向目标 HNB发送 RANAP的重定向请求消息，进行 HNB GW内部的切换流程。步骤 704 , 目标 HNB通过 HNB GW与 CN间建立 RAB 载。步骤 705 , 目标 HNB向 HNB GW发送 RANAP的重定向确认消息。步骤 706 , HNB GW向源 HNB发送 RANAP的重定向命令消息，继续切换流程。步骤 707 , 源 HNB向 UE发送 RRC消息（例如，物理信道重配置消息等），进行无线侧的切换流程。步骤 708至步骤 709, 源 HNB向目标 HNB传递 SRNC上下文。步骤 710 目标 HNB检测到 UE。步骤 711 目标 HNB向 HNB GW发送 RANAP的重定向检测消息。步骤 712, 目标 HNB接收到来自 UE的 RRC消息（例如，物理信道重配置消息等）。步骤 713 ,目标 HNB向 HNB GW发送 RANAP的重定向完成消息， HNB GW在接收到该消息之后，保存 UE在目标 HNB上的注册信息。步骤 714 HNB GW向 CN转发 RANAP的重定向完成消息。步骤 715 , CN更新 PDP上下文。步骤 716, 源 HNB与 HNB GW之间完成资源释放和信息更新流程，具体地，包括：释放 Iu连接，以及删除 UE在源 HNB上注册信息等。图 8和图 9是基于 HNB GW采用现有 RANAP或 RNSAP协议的增强重定向 ¾ϊ程，其中， ΗΝΒ与 HNB GW之间的 RANAP或 RNSAP消息传递由 RUA十办议的消息负责载。图 8描述了 HNB GW对 pre-rel8版本（非 CSG, 即终端不支持 CSG接入）接入的 UE进行重定向处理的流程，该实例中采用 HNB GW解析和发送 RNSAP或 RANAP消息的方式。步骤 801 , 源 HNB要求 UE进行切换测量， UE上报测量结果后，源(b) The HNB GW needs to interact with the CN. For example, the source HNB and the target HNB belong to different CSG groups and need to perform access control, or the target HNB and the source HNB location area identifier are different, and the location area information needs to be updated. Go to step 703b; Step 703a: The HNB GW forwards the RANAP redirection request message to the CN to perform a handover procedure across the HNB GW. In step 703b, the HNB GW interacts with the CN by using the NAS message, for example, performing access control of the UE on the CSG of the target HNB, or updating the location area information, etc., and the message completion interaction proceeds to step 703c. Step 703c: The HNB GW sends a RANAP redirect request message to the target HNB, and performs a handover procedure inside the HNB GW. Step 704: The target HNB establishes an RAB bearer between the HNB GW and the CN. Step 705: The target HNB sends a RANAP redirect confirmation message to the HNB GW. Step 706: The HNB GW sends a RANAP redirect command message to the source HNB, and continues the handover process. Step 707: The source HNB sends an RRC message (for example, a physical channel reconfiguration message, etc.) to the UE, and performs a radio side handover procedure. Step 708 to step 709, the source HNB delivers the SRNC context to the target HNB. Step 710: The target HNB detects the UE. Step 711: The target HNB sends a RANAP redirection detection message to the HNB GW. In step 712, the target HNB receives an RRC message (e.g., a physical channel reconfiguration message, etc.) from the UE. Step 713: The target HNB sends a RANAP redirection complete message to the HNB GW, and after receiving the message, the HNB GW saves the UE registration information on the target HNB. Step 714: The HNB GW forwards the RANAP redirection complete message to the CN. Step 715: The CN updates the PDP context. Step 716: The resource release and the information update process are completed between the source HNB and the HNB GW. Specifically, the method includes: releasing the Iu connection, and deleting the UE registration information on the source HNB. 8 and FIG. 9 are enhanced redirection procedures based on the existing RANAP or RNSAP protocol of the HNB GW, where RANAP or RNSAP messaging between the ΗΝΒ and the HNB GW is carried by the message negotiated by the RUA. FIG. 8 illustrates a procedure for the HNB GW to perform redirection processing on a UE that is accessed by a pre-rel8 version (non-CSG, that is, the terminal does not support CSG access). In this example, the HNB GW is used to parse and send the RNSAP or RANAP message. Step 801: The source HNB requests the UE to perform handover measurement, and after the UE reports the measurement result, the source

HNB对测量结果进行判决，决定发起切换流程。步骤 802,源 HNB根据邻区配置信息或测量信息判断属于 HNB GW内部切换，向所属 HNB GW发送 RNSAP的增强重定向请求消息。步骤 803 , HNB GW确认是 HNB GW内部切换，才艮据目标 HNB对应的允许接入用户列表对接入的 UE进行接入控制，接入控制完成后向所辖目标 HNB转发 RNSAP的增强重定向请求消息。步骤 804,目标 HNB向 HNB GW发送 RNSAP的增强重定向响应消息。步骤 805 , HNB GW向所辖源 HNB转发 RNSAP的增强重定向响应消息。步骤 806 , 源 HNB向 UE发送 RRC的物理信道重配置消息。步骤 807, 在接收到 RLC层的确认消息后，源 HNB向 HNB GW发送The HNB decides on the measurement result and decides to initiate the handover process. Step 802: The source HNB determines that the HNB GW internal handover is performed according to the neighboring area configuration information or the measurement information, and sends an enhanced redirect request message of the RNSAP to the belonging HNB GW. Step 803: The HNB GW confirms that the HNB GW is internally switched, and performs access control on the accessed UE according to the allowed access user list corresponding to the target HNB, and forwards the enhanced redirection of the RNSAP to the target HNB after the access control is completed. Request message. Step 804: The target HNB sends an enhanced redirect response message of the RNSAP to the HNB GW. Step 805: The HNB GW forwards the enhanced redirect response message of the RNSAP to the source HNB under control. Step 806: The source HNB sends an RRC physical channel reconfiguration message to the UE. Step 807, after receiving the acknowledgement message of the RLC layer, the source HNB sends the HNB GW to the HNB GW.

RNSAP的增强重定向确认消息。步骤 808 , NB GW向所辖目标 HNB转发 RNSAP的增强重定向确认消息。步骤 809, 在与目标 HNB完成 L1层同步，并且接收到 NBAP的 RL存储指示消息后， UE向目标 HNB发送 RRC的物理信道重配置消息。步骤 810, 目标 HNB向 HNB GW发送 RANAP的增强重定向完成请求消息， HNB GW在接收到该消息后保存 UE在目标 HNB上的注册信息。步骤 811 , HNB GW向 CN转发 RANAP的增强重定向完成请求消息。步骤 812, CN更新 PDP上下文。步骤 813 , CN向 HNB GW返回 RANAP的增强重定向完成响应消息。步骤 814, 源 HNB与 HNB GW之间完成资源释放和信息更新流程，具体包括：释放 Iu连接，以及删除 UE在源 HNB上注册信息等。图 9描述了 HNB GW对 rel8或后续版本 (支持 CSG, 即终端支持 CSG 接入）接入的 UE进行重定向处理的流程，该实例中采用 HNB GW解析和发送 RNSAP和 RANAP消息的方式。步骤 901 , 源 HNB要求 UE进行切换测量， UE上报测量结果后，源 HNB对测量结果进行判决，决定发起切换流程。步骤 902,源 HNB根据邻区配置信息或测量信息判断属于 HNB GW内部切换，向所属 HNB GW发送 RNSAP的增强重定向请求消息，之后， HNB GW判断是否需要与 CN进行交互：如果需要与 CN交互，则转入步骤 903a, 如果不需要与 CN交互，则转入步骤 903b。步骤 903a, HNB GW判断需要与 CN进行交互，例如，目标 HNB和源 HNB归属于不同迪 CSG群组，则需要在 CN中进行接入控制等等，并在完成与 CN之间交互之后，转入步骤 903b。步骤 903b , HNB GW向目标 HNB转发 RNSAP的增强重定向请求消息。步骤 904,目标 HNB向 HNB GW发送 RNSAP的增强重定向响应消息。步骤 905 , HNB GW向源 HNB转发 RNSAP的增强重定向响应消息。步骤 906 , 源 HNB向 UE发送 RRC的物理信道重配置消息。步骤 907, 在接收到 RLC层的确认消息后，源 HNB向 HNB GW发送 RNSAP的增强重定向确认消息。步骤 908 , NB GW向目标 HNB转发 RNSAP的增强重定向确认消息。步骤 909, 在与目标 HNB完成 L1层同步，并且接收到 NBAP的 RL存储指示消息后， UE向目标 HNB发送 RRC的物理信道重配置消息。步骤 910, 目标 HNB向 HNB GW发送 RANAP的增强重定向完成请求消息， HNB GW在接收到该消息后保存 UE在目标 HNB上的注册信息。步骤 911 , HNB GW向 CN转发 RANAP的增强重定向完成请求消息。步骤 912, CN更新 PDP上下文。步骤 913 , CN向 HNB GW返回 RANAP的增强重定向完成响应消息。步骤 914, 源 HNB与 HNB GW之间完成资源释放和信息更新流程，具体地，包括：释放 Iu连接，以及删除 UE在源 HNB上注册信息等。图 10和图 11是基于 HNB GW采用新增的 HNBAP协议的重定向流程，需要说明的是，该方法也可以采用新增的 RUA协议的重定向流程，具体实现方法与下述图 10和图 11所示的采用新增的 HNBAP协议的重定向流程类似，这里不再赘述。图 10描述了 HNB GW对 pre-rel8版本（非 CSG, 即终端不支持 CSG 接入 )接入的 UE进行切换处理的流程，该实例中采用在 HNB与 HNB GW 之间新增 HNBAP消息的方式。步骤 1001 , 源 HNB要求 UE进行切换测量， UE上报测量结果后，源 HNB对测量结果进行判决，决定发起切换流程。步骤 1002, 源 HNB向所属 HNB GW发送 HNBAP的重定向需求消息， HNB GW 居所辖 HNB信息（ HNB注册时 HNB GW获取并保存）判断切换的源 HNB和目标 HNB是否都属于该 HNB GW所属 HNB: RNSAP's enhanced redirect acknowledgment message. Step 808: The NB GW forwards the enhanced redirect acknowledgement message of the RNSAP to the target HNB. Step 809: After completing the L1 layer synchronization with the target HNB, and receiving the RL storage indication message of the NBAP, the UE sends an RRC physical channel reconfiguration message to the target HNB. Step 810: The target HNB sends an enhanced redirection completion request message of the RANAP to the HNB GW, and the HNB GW saves the registration information of the UE on the target HNB after receiving the message. Step 811: The HNB GW forwards the RANAP enhanced redirection complete request message to the CN. In step 812, the CN updates the PDP context. Step 813: The CN returns an enhanced redirect completion response message of the RANAP to the HNB GW. Step 814: The resource release and information update process is performed between the source HNB and the HNB GW, and specifically includes: releasing the Iu connection, and deleting the UE registration information on the source HNB. FIG. 9 illustrates a procedure for the HNB GW to perform redirection processing on a UE accessed by a rel8 or a subsequent version (supporting CSG, that is, the terminal supports CSG access). In this example, the HNB GW is used to parse and send RNSAP and RANAP messages. Step 901: The source HNB requests the UE to perform handover measurement. After the UE reports the measurement result, the source HNB determines the measurement result, and determines to initiate the handover process. Step 902: The source HNB determines that the HNB GW internal handover is performed according to the neighboring area configuration information or the measurement information, and sends an enhanced redirect request message of the RNSAP to the belonging HNB GW. After that, the HNB GW determines whether it needs to interact with the CN: if it needs to interact with the CN Then, the process proceeds to step 903a. If it is not necessary to interact with the CN, the process proceeds to step 903b. In step 903a, the HNB GW determines that it needs to interact with the CN. For example, if the target HNB and the source HNB belong to different Di CSG groups, the access control needs to be performed in the CN, and after the interaction with the CN is completed, Proceed to step 903b. Step 903b: The HNB GW forwards the enhanced redirect request message of the RNSAP to the target HNB. Step 904: The target HNB sends an enhanced redirect response message of the RNSAP to the HNB GW. Step 905: The HNB GW forwards the enhanced redirect response message of the RNSAP to the source HNB. Step 906: The source HNB sends an RRC physical channel reconfiguration message to the UE. Step 907: After receiving the acknowledgement message of the RLC layer, the source HNB sends an enhanced redirect acknowledgement message of the RNSAP to the HNB GW. Step 908: The NB GW forwards the enhanced redirect acknowledgement message of the RNSAP to the target HNB. Step 909: After completing the L1 layer synchronization with the target HNB, and receiving the RL storage indication message of the NBAP, the UE sends an RRC physical channel reconfiguration message to the target HNB. Step 910: The target HNB sends an enhanced redirection complete request message of the RANAP to the HNB GW, and the HNB GW saves the registration information of the UE on the target HNB after receiving the message. Step 911: The HNB GW forwards the RANAP enhanced redirect complete request message to the CN. In step 912, the CN updates the PDP context. Step 913: The CN returns an enhanced redirect completion response message of the RANAP to the HNB GW. Step 914: The resource release and information update process is completed between the source HNB and the HNB GW. Specifically, the method includes: releasing the Iu connection, and deleting the UE registration information on the source HNB. FIG. 10 and FIG. 11 are redirection processes based on the HNB GW protocol. The redirection process of the new RUA protocol may also be adopted. The specific implementation method and the following FIG. 10 and FIG. The redirection process using the new HNBAP protocol shown in Figure 11 is similar and will not be described here. FIG. 10 illustrates a procedure for the HNB GW to perform handover processing on a UE that is accessed by a pre-rel8 version (non-CSG, that is, the terminal does not support CSG access). In this example, a manner of adding a HNBAP message between the HNB and the HNB GW is adopted. . Step 1001: The source HNB requests the UE to perform handover measurement. After the UE reports the measurement result, the source HNB determines the measurement result, and determines to initiate the handover process. Step 1002: The source HNB sends a HNBAP redirection request message to the HNB GW, and the HNB GW occupies the HNB information (HNB GW acquires and saves when the HNB is registered). It is determined whether the source HNB and the target HNB of the handover belong to the HNB to which the HNB GW belongs. :

( a ), 如果目标 HNB不归属于该 HNB GW, 即源 HNB与目标 HNB 归属于不同的 HNB GW, 则转入步骤 1003a; (a), if the target HNB is not attributed to the HNB GW, that is, the source HNB and the target HNB belong to different HNB GWs, then proceeds to step 1003a;

( b ), 如果目标 HNB归属于该 HNB GW, 即源 HNB与目标 HNB归属于相同的 HNB GW, 但需要与 CN交互（如目标 HNB与源 HNB位置区标识不同，需要更新位置区信息等），则转入步骤 1003b; (b), if the target HNB belongs to the HNB GW, that is, the source HNB and the target HNB belong to the same HNB GW, but need to interact with the CN (if the target HNB is different from the source HNB location area identifier, the location area information needs to be updated, etc.) , then proceeds to step 1003b;

( c ), 如果目标 HNB归属于该 HNB GW, 即源 HNB与目标 HNB归属于相同的 HNB GW, 且不需要与 CN交互，则转入步骤 1003c。步骤 1003a, HNB GW向 CN转发上述 RANAP的重定向需求消息，进行跨 HNB GW的切换流程。步骤 1003b , HNB GW通过 NAS与 CN消息交互，例如，更新位置区信息等，消息交互完成后转入步骤 1003c。步骤 1003c , HNB GW才艮据目标 HNB对应的允许接入的用户列表，对 UE进行接入控制。如果目标 HNB允许该 UE接入，即该 UE存在于目标 HNB 对应的允许接入的用户列表上，贝l HNB GW向目标 HNB发送 RANAP的重定向请求消息，进行 HNB GW内部的切换流程。步骤 1004, 目标 HNB通过 HNB GW与 CN间建立 RAB 载。步骤 1005 , 目标 HNB向 HNB GW发送 HNBAP的重定向确认消息。步骤 1006, HNB GW向目标 HNB发送 HNBAP的重定向命令消息，继续切换流程。步骤 1007, 源 HNB向 UE发送 RRC消息（例如，物理信道重配置消息等），进行无线侧的切换流程。步骤 1008至步骤 1009为源 HNB向目标 HNB传递 SRNC上下文。步骤 1010, 目标 HNB检测到 UE。步骤 1011 , 目标 HNB向 HNB GW发送 HNBAP的重定向检测消息。步骤 1012, 目标 HNB接收到来自 UE的 RRC消息（例如，物理信道重配置消息等）。步骤 1013 , 目标 HNB向 HNB GW发送 HNBAP的重定向完成消息，(c), if the target HNB belongs to the HNB GW, that is, the source HNB and the target HNB belong to the same HNB GW, and does not need to interact with the CN, then go to step 1003c. In step 1003a, the HNB GW forwards the RANAP redirection request message to the CN, and performs a handover procedure across the HNB GW. In step 1003b, the HNB GW interacts with the CN message through the NAS, for example, updating the location area information, etc., and after the message interaction is completed, the process proceeds to step 1003c. Step 1003c: The HNB GW performs access control on the UE according to the list of allowed users corresponding to the target HNB. If the target HNB allows the UE to access, that is, the UE exists on the user list of the access allowed by the target HNB, the H1HNB GW sends a RANAP redirection request message to the target HNB, and performs a handover procedure inside the HNB GW. In step 1004, the target HNB establishes an RAB bearer between the HNB GW and the CN. Step 1005: The target HNB sends a redirect acknowledgement message of the HNBAP to the HNB GW. Step 1006: The HNB GW sends a redirect command message of the HNBAP to the target HNB, and continues the handover process. Step 1007: The source HNB sends an RRC message (for example, a physical channel reconfiguration message, etc.) to the UE, and performs a radio side handover procedure. Steps 1008 through 1009 pass the SRNC context to the target HNB for the source HNB. In step 1010, the target HNB detects the UE. Step 1011: The target HNB sends a redirection detection message of the HNBAP to the HNB GW. Step 1012: The target HNB receives an RRC message (e.g., a physical channel reconfiguration message, etc.) from the UE. Step 1013: The target HNB sends a HNBAP redirect complete message to the HNB GW.

HNB GW在接收到该消息之后，保存 UE在目标 HNB上的注册信息。步骤 1014, HNB GW向 CN转发 HNBAP的重定向完成消息。步骤 1015 , CN更新 PDP上下文。步骤 1016 , 源 HNB与 HNB GW之间完成资源释放和信息更新流程，具体包括：释放 Iu连接，以及删除 UE在源 HNB上注册信息等。图 11描述了 HNB GW对 rel8或后续版本（支持 CSG,即终端支持 CSG 接入）接入的 UE 进行重定向处理的流程，该实例中采用 HNB GW 解析 HNBAP协议的方式。步骤 1101 , 源 HNB要求 UE进行切换测量， UE上报测量结果后，源 HNB对测量结果进行判决，决定发起切换流程。步骤 1102 , 源 HNB向其归属 HNB GW发送 RANAP的重定向需求消息， HNB GW才艮据所辖 HNB信息（ HNB注册时 HNB GW获取并保存）判断源 HNB和目标 HNB是否都归属于该 HNB GW„ 如果目标 HNB不归属于该 HNB GW, 即源 HNB与目标 HNB归属于不同的 HNB GW, 则转入步骤 1103a; 如果源 HNB和目标 HNB属于相同的 HNB GW,贝l HNB GW才艮据保存的 HNB信息，判断源 HNB和目标 HNB是否属于相同的 CSG群组和相同的位置区（ HNB在注册时将自身 CSG标识和位置区标识提供给 HNB GW保存），具体地，分为以下两种情况： ( a ), ^口果源 HNB和目标 HNB归属于目同的 CSG群组和目同的位置区等等，则无需与 CN交互，转入步骤 1103c; ( b ), HNB GW需要与 CN进行交互，例如，源 HNB和目标 HNB属于不同的 CSG群组需要进行接入控制，或者目标 HNB与源 HNB位置区标识不同，需要更新位置区信息等，则转入步骤 1103b。步骤 1103 a , HNB GW向 CN转发 RANAP的重定向需求消息，进行跨 HNB GW的切换流程。步骤 1103b , HNB GW采用 NAS消息与 CN进行交互，例如，执行 UE 在目标 HNB的 CSG上的接入控制，或者更新位置区信息等等，消息完成交互则转入步骤 1103c。步骤 1103c, HNB GW向目标 HNB发送 HNBAP的重定向请求消息，进行 HNB GW内部的切换流程。步骤 1104, 目标 HNB通过 HNB GW与 CN间建立 RAB 载。步骤 1105 , 目标 HNB向 HNB GW发送 HNBAP的重定向确认消息。步骤 1106, HNB GW向目标 HNB发送 HNBAP的重定向命令消息，继续切换流程。步骤 1107 , 源 HNB向 UE发送 RRC消息（例如物理信道重配置消息等），进行无线侧的切换流程。步骤 1108至步骤 1109, 源 HNB向目标 HNB传递 SRNC上下文。步骤 1110, 目标 HNB检测到 UE。步骤 1111 , 目标 HNB向 HNB GW发送 HNBAP的重定向检测消息。步骤 1112 , 目标 HNB接收到来自 UE的 RRC消息（例如，物理信道重配置消息等）。步骤 1113 , 目标 HNB向 HNB GW发送 HNBAP的重定向完成消息。 HNB GW在接收到该消息之后，保存 UE在目标 HNB上的注册信息。步骤 1114, HNB GW向 CN转发 HNBAP的重定向完成消息。步骤 1115 , CN更新 PDP上下文。步骤 1116, 源 HNB与 HNB GW之间完成资源释放和信息更新流程，具体地，包括：释放 Iu连接，以及删除 UE在源 HNB上注册信息等。通过上述实施例，在家用基站网关上实现家用基站间的重定向处理，通过家用基站网关的判断，同一个家用基站网关下的家用基站间切换可以在家用基站网关内部完成；并且对于 pre-rel8版本的 UE接入，在切换进行的同时完成对 UE的接入控制，在切换完成后进行 UE在目标 HNB的注册；对于 rel8或后续的版本接入的 UE ,如果 HNB GW判断切换的源 HNB和目标 HNB 属于同一 CSG群组，则可以省略接入控制过程，简化了重定向处理流程，减小了核心网的负荷。 ***实施例根据本发明实施例，提供一种重定向***。图 12示出了才艮据本发明实施例的重定向***的结构框图，如图 12所示，该***包括收发模块 10、判断模块 20和发送模块 30 , 其中，收发模块 10、判断模块 20和发送模块 30均可以位于网关侧。收发模块 10, 用于接收来自源家用基站的第一重定向请求，其中，第一重定向请求中携带有源家用基站的标识、终端的标识、目标家用基站的标识；判断模块 20, 连接至收发模块 10, 用于根据重定向请求中的参数，判断是否允许终端接入目标家用基站；发送模块 30, 连接至断模块 20, 用于向目标家用基站发送第二重定向请求，以使目标家用基站进行切换，其中，第二重定向请求包括：源家用基站的标识、终端的标识、目标家用基站的标识。图 13示出了本发明实施例的同步信号序列的发送***的优选结构才匡架图，如图 13所示，在图 12所示***的基上，所述判断模块 20包括第一判断子模块 202、第二判断子模块 204、第三子判断模块 206、第四判断子模块 208和调用子模块 210, 其中，除第三子判断模块 206位于核心网，其他模块均可位于网关中。第一判断子模块 202, 用于才艮据终端的标识判断终端是否支持闭合用户组接入；第二判断子模块 204 , 连接至第一判断子模块 202, 用于才艮据源家用基站的标识和目标家用基站的标识，判断源家用基站与目标家用基站是否归属于相同的闭合用户组；第三子判断模块 206, 连接第一判断子模块 202 和第二判断子模块 204 ,用于判断闭合用户组是否允许终端接入闭合用户组；第四判断子模块 208, 连接至第一判断子模块 202, 用于判断目标家用基站是否允许终端接入目标家用基站；调用子模块 210 , 连接至第一判断子模块 202、第二判断子模块 204和第三子判断模块 206, 如果第三子判断模块或第四子模块的判断结果为是，则调用发送模块 30。通过本发明实施例提供的重定向***，在网关内部对归属于该网关的多个家用基站进行重定向处理，不需要通过核心网进行消息的交互，相比于现有技术，本发明简化了重定向处理流程，减小了核心网的负荷。上述***的具体处理过程为：首先，第一判断子模块 202才艮据终端的标识判断终端是否支持闭合用户组接入，如果第一判断子模块 202的判断结果为否，会根据保存的目标家用基站允许接入的终端列表，第四判断子模块 208 判断目标家用基站是否允许终端接入目标家用基站，如果第四判断子模块 208 的判断结果为是，即目标家用基站允许该终端接入，即该终端存在于目标家用基站允许接入的终端列表上，则调用子模块 210调用发送模块 30向目标家用基站发送第二重定向请求，以使所述目标家用基站进行切换，如果第四判断子模块 208的判断结果为否，即目标家用基站不允许该终端接入，即该终端不存在于目标家用基站允许接入的终端列表上，网关会终止重定向流程。如果第一判断子模块 202的判断结果为是，即判断出终端支持闭合用户组接入，第二判断子模块 204会根据源家用基站的标识和目标家用基站的标识，判断源家用基站与目标家用基站是否归属于相同的闭合用户组，如果第二判断子模块 204的判断结果为是，即源家用基站与目标家用基站归属于相同的闭合用户组，则允许终端接入目标家用基站，调用子模块 210调用发送模块 30 向目标家用基站发送第二重定向请求，以使所述目标家用基站进行切换。如果第二判断子模块 204 判断出源家用基站与目标家用基站不属于相同的闭合用户组，收发模块 10会向位于核心网的第三子判断模块 206发送接入控制请求消息，其中，接入控制请求消息中携带有终端的标识和目标家用基站归属的闭合用户组标识，第三子判断模块 206根据其保存的终端允许接入的闭合用户组的列表，判断目标家用基站归属的闭合用户组（为了描述清楚，将该闭合用户组称为闭合用户组 1 ) 是否允许该终端接入，并将判断结果返回给网关；如果闭合用户组 1允许该终端接入，即该终端存在于闭合用户组 1允许接入的终端列表上，调用子模块 210会调用发送模块 30向目标家用基站发送第二重定向请求，以使目标家用基站进行切换，如果第三子判断模块 206 , 即闭合用户组 1 不允许该终端接入，即该终端不存在于闭合用户组 1允许接入的终端列表上，网关会终止重定向流程。需要说明的是，本发明仅以家用基站为例对本发明实施例的重定向方法进行说明，但并不限于此，其他基站使用该重定向方法仍在本发明的保护范围内，例如，演进的家用基站（ H eNB ) 等其他基站。如上所述，借助于本发明提供的重定向方法和 /或***，在网关内部对归属于该网关的多个家用基站进行重定向处理，不需要通过核心网进行消息的交互，相比于现有技术，本发明简化了重定向处理流程，减小了核心网的负荷。以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。 After receiving the message, the HNB GW saves the registration information of the UE on the target HNB. Step 1014: The HNB GW forwards the HNBAP redirection complete message to the CN. In step 1015, the CN updates the PDP context. Step 1016: The process of releasing the resource and updating the information between the source HNB and the HNB GW, including: releasing the Iu connection, and deleting the registration information of the UE on the source HNB. FIG. 11 is a flowchart of a process in which the HNB GW performs redirection processing on a UE that is accessed by the NB8 or the subsequent version (supporting the CSG, that is, the terminal supports the CSG access). In this example, the HNB GW is used to resolve the HNBAP protocol. Step 1101: The source HNB requests the UE to perform handover measurement. After the UE reports the measurement result, the source HNB determines the measurement result, and determines to initiate the handover process. Step 1102: The source HNB sends a RANAP redirection request message to the home HNB GW, and the HNB GW determines whether the source HNB and the target HNB belong to the HNB GW according to the HNB information (the HNB GW acquires and saves when the HNB is registered). If the target HNB does not belong to the HNB GW, that is, the source HNB and the target HNB belong to different HNB GWs, go to step 1103a; if the source HNB and the target HNB belong to the same HNB GW, the H HNB GW saves the data. The HNB information is used to determine whether the source HNB and the target HNB belong to the same CSG group and the same location area (the HNB provides its own CSG identifier and location area identifier to the HNB GW for saving when registering), specifically, the following two types. Situation: (a), the source of the source HNB and the target HNB belong to the same CSG group and the same location area, etc., then do not need to interact with the CN, go to step 1103c; (b) The HNB GW needs to interact with the CN. For example, the source HNB and the target HNB belong to different CSG groups and need to perform access control, or the target HNB and the source HNB location area identifier are different, and the location area information needs to be updated. Go to step 1103b. Step 1103: The HNB GW forwards the RANAP redirection request message to the CN, and performs a handover process across the HNB GW. In step 1103b, the HNB GW interacts with the CN by using the NAS message, for example, performing the access control of the UE on the CSG of the target HNB, or updating the location area information, etc., and the message completion interaction proceeds to step 1103c. Step 1103c: The HNB GW sends a redirect request message of the HNBAP to the target HNB, and performs a handover process inside the HNB GW. Step 1104: The target HNB establishes an RAB bearer between the HNB GW and the CN. Step 1105: The target HNB sends a redirect acknowledgement message of the HNBAP to the HNB GW. Step 1106: The HNB GW sends a redirect command message of the HNBAP to the target HNB, and continues the handover process. Step 1107: The source HNB sends an RRC message (for example, a physical channel reconfiguration message, etc.) to the UE, and performs a radio side handover procedure. Step 1108 to step 1109, the source HNB delivers the SRNC context to the target HNB. In step 1110, the target HNB detects the UE. Step 1111: The target HNB sends a redirect detection message of the HNBAP to the HNB GW. Step 1112: The target HNB receives an RRC message (eg, a physical channel reconfiguration message, etc.) from the UE. Step 1113: The target HNB sends a HNBAP redirect complete message to the HNB GW. After receiving the message, the HNB GW saves the registration information of the UE on the target HNB. Step 1114: The HNB GW forwards the HNBAP redirection complete message to the CN. In step 1115, the CN updates the PDP context. Step 1116: The resource release and the information update process are completed between the source HNB and the HNB GW. Specifically, the method includes: releasing the Iu connection, and deleting the UE registration information on the source HNB. Through the foregoing embodiment, the redirection process between the home base stations is implemented on the home base station gateway, and the home base station handover under the same home base station gateway can be completed within the home base station gateway by the judgment of the home base station gateway; and for the pre-rel8 The access of the UE is completed, and the access control of the UE is completed while the handover is being performed. After the handover is completed, the registration of the UE in the target HNB is performed. For the UE accessed by the rel8 or subsequent versions, if the HNB GW determines the source HNB of the handover. If the target HNB belongs to the same CSG group, the access control process can be omitted, the redirection process is simplified, and the load of the core network is reduced. System Embodiment According to an embodiment of the present invention, a redirection system is provided. FIG. 12 is a structural block diagram of a redirection system according to an embodiment of the present invention. As shown in FIG. 12, the system includes a transceiver module 10, a judging module 20, and a sending module 30, wherein the transceiver module 10 and the judging module 20 And the sending module 30 can be located on the gateway side. The transceiver module 10 is configured to receive a first redirection request from the source home base station, where the first redirection request carries an identifier of the active home base station, an identifier of the terminal, and an identifier of the target home base station, and the determining module 20 is connected to The transceiver module 10 is configured to determine, according to the parameter in the redirect request, whether the terminal is allowed to access the target home base station, and the sending module 30 is connected to the disconnecting module 20, configured to send a second redirect request to the target home base station to enable the target The home base station performs the handover, where the second redirect request includes: an identifier of the source home base station, an identifier of the terminal, and an identifier of the target home base station. FIG. 13 is a block diagram showing a preferred structure of a transmission system for a synchronization signal sequence according to an embodiment of the present invention. As shown in FIG. 13, on the basis of the system shown in FIG. 12, the determination module 20 includes a first judgment. The module 202, the second determining sub-module 204, the third sub-judgement module 206, the fourth judging sub-module 208, and the calling sub-module 210, wherein the third sub-judging module 206 is located in the core network, and other modules may be located in the gateway. The first determining sub-module 202 is configured to determine whether the terminal supports the closed user group access according to the identifier of the terminal; the second determining sub-module 204 is connected to the first determining sub-module 202, and is configured to use the source home base station And identifying, by the identifier of the target home base station, whether the source home base station and the target home base station belong to the same closed user group; the third sub-determination module 206 is connected to the first determining sub-module 202 And the second determining sub-module 204 is configured to determine whether the closed user group allows the terminal to access the closed user group; the fourth determining sub-module 208 is connected to the first determining sub-module 202, and configured to determine whether the target home base station allows the terminal to access a target home base station; the calling sub-module 210 is connected to the first determining sub-module 202, the second determining sub-module 204, and the third sub-determining module 206, and if the judgment result of the third sub-determining module or the fourth sub-module is yes, The sending module 30 is called. The redirection system provided by the embodiment of the present invention performs redirection processing on multiple home base stations belonging to the gateway in the gateway, and does not need to perform message interaction through the core network. Compared with the prior art, the present invention simplifies. The redirection process reduces the load on the core network. The specific processing procedure of the foregoing system is: First, the first determining sub-module 202 determines whether the terminal supports the closed user group access according to the identifier of the terminal, and if the judgment result of the first determining sub-module 202 is no, the saved target is The fourth basement sub-module 208 determines whether the target home base station allows the terminal to access the target home base station. If the determination result of the fourth judgment sub-module 208 is yes, the target home base station allows the terminal to access the terminal list. That is, the terminal exists on the terminal list that the target home base station allows access, and the calling sub-module 210 calls the sending module 30 to send a second redirection request to the target home base station, so that the target home base station performs handover, if the fourth The judgment result of the determination sub-module 208 is no, that is, the target home base station does not allow the terminal to access, that is, the terminal does not exist on the terminal list that the target home base station allows access, and the gateway terminates the redirection process. If the judgment result of the first judging sub-module 202 is YES, that is, it is determined that the terminal supports the closed user group access, the second judging sub-module 204 determines the source home base station and the target according to the identifier of the source home base station and the identifier of the target home base station. Whether the home base station belongs to the same closed subscriber group, if the judgment result of the second judgment sub-module 204 is yes, that is, the source home base station and the target home base station belong to the same closed subscriber group, the terminal is allowed to access the target home base station, and the call is made. The sub-module 210 invokes the sending module 30 to send a second redirection request to the target home base station to cause the target home base station to perform handover. If the second judging sub-module 204 determines that the source home base station and the target home base station do not belong to the same closed subscriber group, the transceiver module 10 sends an access control request message to the third sub-judging module 206 located in the core network, where The control request message carries the identifier of the terminal and the closed subscriber group identifier of the target home base station, and the third sub-judgment module 206 determines the closed subscriber group to which the target home base station belongs according to the list of closed subscriber groups that the terminal is allowed to access. (For clarity of description, the closed subscriber group is referred to as closed subscriber group 1) Whether the terminal is allowed to access, and the judgment result is returned to the gateway; if the closed subscriber group 1 allows the terminal to access, that is, the terminal exists in the closed On the list of terminals allowed to be accessed by the user group 1, the calling sub-module 210 calls the sending module 30 to send a second redirection request to the target home base station to enable the target home base station to perform handover, if the third sub-judging module 206, that is, the closed user Group 1 does not allow access to the terminal, that is, the terminal does not exist on the list of terminals that the closed user group 1 is allowed to access, and the gateway terminates the redirection process. It should be noted that the present invention only uses the home base station as an example to describe the redirection method in the embodiment of the present invention, but is not limited thereto, and the other base station still uses the redirection method within the protection scope of the present invention, for example, an evolved Other base stations such as home base stations (H eNBs). As described above, by means of the redirection method and/or system provided by the present invention, a plurality of home base stations belonging to the gateway are redirected within the gateway, and the message interaction through the core network is not required. With technology, the present invention simplifies the redirection process and reduces the load on the core network. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

权利要求书 Claim

1. 一种重定向方法，用于终端从源家用基站切换到目标家用基站，其中，所述源家用基站与所述目标家用基站归属于相同的网关，其特征在于，所述方法包括： A redirection method, configured to: switch from a source home base station to a target home base station, where the source home base station and the target home base station belong to the same gateway, and the method includes:

所述网关接收来自所述源家用基站的第一重定向请求，其中，所述第一重定向请求中携带有所述源家用基站的标识、所述终端的标识、所述目标家用基站的标识；所述网关才艮据所述重定向请求中的参数，判断是否允许所述终端接入所述目标家用基站； The gateway receives a first redirection request from the source home base station, where the first redirection request carries an identifier of the source home base station, an identifier of the terminal, and an identifier of the target home base station. And determining, by the gateway, whether the terminal is allowed to access the target home base station according to the parameter in the redirect request;

如果判断结果为是，所述网关向所述目标家用基站发送第二重定向请求，以使所述目标家用基站进行切换。 If the determination result is yes, the gateway sends a second redirection request to the target home base station to enable the target home base station to perform handover.

2. 根据权利要求 1所述的方法，其特征在于，所述网关根据所述第一重定向请求判断是否允许所述终端接入所述目标家用基站的处理包括：所述网关根据所述终端的标识判断所述终端是否支持闭合用户组接入； The method according to claim 1, wherein the determining, by the gateway, whether the terminal is allowed to access the target home base station according to the first redirection request comprises: the gateway according to the terminal The identifier determines whether the terminal supports closed user group access;

在判断所述终端支持闭合用户组接入的情况下，所述网关根据所述源家用基站的标识和所述目标家用基站的标识，判断所述源家用基站与所述目标家用基站是否归属于相同的闭合用户组，如果判断结果为是，则允许所述终端接入所述目标家用基站；否则，所述网关向核心网发送接入控制请求消息，其中，所述接入控制请求消息中携带有所述终端的标识和所述目标家用基站归属的闭合用户组标识，所述核心网根据保存的所述终端允许接入的闭合用户组的列表，判断所述目标家用基站归属的闭合用户组是否允许所述终端接入，并将判断结果返回给所述网关。 In the case that the terminal supports the closed user group access, the gateway determines, according to the identifier of the source home base station and the identifier of the target home base station, whether the source home base station and the target home base station belong to If the result of the determination is YES, the terminal is allowed to access the target home base station; otherwise, the gateway sends an access control request message to the core network, where the access control request message is Carrying the identifier of the terminal and the closed subscriber group identifier of the target home base station, the core network determining, according to the saved list of closed subscriber groups that the terminal is allowed to access, the closed subscriber to which the target home base station belongs Whether the group allows the terminal to access, and returns a judgment result to the gateway.

3. 根据权利要求 2所述的方法，其特征在于，在判断所述终端不支持闭合用户组接入的情况下，所述网关根据保存的所述目标家用基站允许接入的终端列表，判断所述目标家用基站是否允许所述终端接入所述目标家用基站。 The method according to claim 2, wherein, in the case that it is determined that the terminal does not support closed user group access, the gateway determines, according to the saved terminal list that the target home base station allows access Whether the target home base station allows the terminal to access the target home base station.

4. 根据权利要求 2所述的方法，其特征在于，所述确定所述目标家用基站归属的闭合用户组标识的处理包括： The method according to claim 2, wherein the process of determining the closed subscriber group identifier to which the target home base station belongs includes:

在所述目标家用基站向所述网关的注册过程中，将其所归属的闭合用户组的标识发送给所述网关，所述网关保存所述目标家用基站的标识与所述闭合用户组的标识的对应关系。 And sending, by the target home base station, the identifier of the closed subscriber group to which the target home base station belongs to the gateway, where the gateway saves the identifier of the target home base station and the identifier of the closed subscriber group Correspondence.

5. 才艮据权利要求 1至 4中任一项所述的方法，其特征在于，所述第二重定向请求包括：所述源家用基站的标识、所述终端的标识、所述目标家用基站的标识。 The method according to any one of claims 1 to 4, wherein the second redirection request comprises: an identifier of the source home base station, an identifier of the terminal, the target home The identity of the base station.

6. 才艮据权利要求 1至 4中任一项所述的方法，其特征在于，所述第一重定向请求包括以下之一：无线接入网络应用部分协议的重定向请求，无线网络子***应用部分协议的增强重定向请求、家用基站应用部分协议的重定向请求、无线接入网络应用部分的用户适配协议的重定向请求。 The method according to any one of claims 1 to 4, wherein the first redirection request comprises one of: a redirection request of a radio access network application part protocol, a wireless network sub The system applies part of the protocol's enhanced redirection request, the home base station application part of the protocol redirection request, and the radio access network application part of the user adaptation protocol redirection request.

7. 根据权利要求 6所述的方法，其特征在于， 7. The method of claim 6 wherein:

如果所述第一重定向请求为所述无线接入网络应用部分协议的重定向请求，则所述第一重定向请求的结构与所述第二重定向请求的结构不同； If the first redirection request is a redirection request of the radio access network application part protocol, the structure of the first redirection request is different from the structure of the second redirection request;

如果所述第一重定向请求为所述无线网络子***应用部分协议的增强重定向请求，则所述第一重定向请求的结构与所述第二重定向请求的结构相同； If the first redirect request is an enhanced redirect request of the wireless network subsystem application part protocol, the structure of the first redirect request is the same as the structure of the second redirect request;

如果所述第一重定向请求为所述家用基站应用部分协议的重定向请求或所述无线接入网络应用部分的用户适配协议的重定向请求，则所述第一重定向请求的结构与所述第二重定向请求的结构相同或不同。 If the first redirection request is a redirection request of the home base station application part protocol or a redirection request of a user adaptation protocol of the radio access network application part, the structure of the first redirection request is The structure of the second redirect request is the same or different.

8. 一种重定向***，其特征在于，所述***包括： A redirection system, characterized in that the system comprises:

收发模块，用于接收来自所述源家用基站的第一重定向请求，其中，所述第一重定向请求中携带有源家用基站的标识、终端的标识、目标家用基站的标识； a transceiver module, configured to receive a first redirection request from the source home base station, where the first redirection request carries an identifier of the active home base station, an identifier of the terminal, and an identifier of the target home base station;

判断模块，用于根据所述重定向请求中的参数，判断是否允许所述终端接入所述目标家用基站； a determining module, configured to determine, according to the parameter in the redirect request, whether the terminal is allowed to access the target home base station;

发送模块，用于向所述目标家用基站发送第二重定向请求，以使所述目标家用基站进行切换。 And a sending module, configured to send a second redirect request to the target home base station, to enable the target home base station to perform handover.

9. 根据权利要求 8所述的***，其特征在于，所述判断模块包括：第一判断子模块，用于根据所述终端的标识判断所述终端是否支持闭合用户组接入； The system according to claim 8, wherein the determining module comprises: a first determining sub-module, configured to determine, according to the identifier of the terminal, whether the terminal supports closed user group access;

第二判断子模块，用于根据所述源家用基站的标识和所述目标家用基站的标识，判断所述源家用基站与所述目标家用基站是否归属于相同的闭合用户组； a second determining sub-module, configured to determine, according to the identifier of the source home base station and the identifier of the target home base station, whether the source home base station and the target home base station belong to the same closed user group;

第三子判断模块，用于判断所述闭合用户组是否允许所述终端接入所述闭合用户组； a third sub-determination module, configured to determine whether the closed user group allows the terminal to access the closed user group;

第四判断子模块，用于判断所述目标家用基站是否允许所述终端接入所述目标家用基站； a fourth determining submodule, configured to determine whether the target home base station allows the terminal to access the target home base station;

调用子模块，如果所述第二判断子模块或第三子判断模块或所述第四子模块的判断结果为是，则调用所述发送模块。 The submodule is called, and if the judgment result of the second judging submodule or the third subjudgement module or the fourth submodule is YES, the sending module is called.

10. 根据权利要求 8或 9所述的***，其特征在于，所述第二重定向请求包括：所述源家用基站的标识、所述终端的标识、所述目标家用基站的标识。 The system according to claim 8 or 9, wherein the second redirection request comprises: an identifier of the source home base station, an identifier of the terminal, and an identifier of the target home base station.

11. 根据权利要求 8或 9所述的***，其特征在于， 11. System according to claim 8 or 9, characterized in that