WO2007098711A1

WO2007098711A1 - Method, device and system for selecting core network

Info

Publication number: WO2007098711A1
Application number: PCT/CN2007/000679
Authority: WO
Inventors: Chuanhui Tao
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2006-03-03
Filing date: 2007-03-02
Publication date: 2007-09-07

Abstract

A method, device and system for selecting core network. When network sharing non-supporting UE carries out network attach or update location on the shared network, the Radio Network Controller (RNC) obtains the Intra Domain NAS Node Selector (IDNNS) of the user. If said IDNNS is lead out from Temporary Mobile Subscriber Identity (TMSI) or Packet-Temporary Mobile Subscriber Identity (P-TMSI), then calculating the Network Access Server (NRI) corresponding to said TMSI or P-TMSI, and selecting the core network according to the NRI. If said IDNNS is not lead out from TMSI or P-TMSI, the RNC obtains the IMSI of the user (1), then the RNC matches the obtained IMSI with that number segment in the RNC (2), when the IMSI of the user can be matched to the IMSI segment, priority of selecting core network from said matched IMSI number segment corresponding to core network operators which relates to the core network (5). The present invention can improve the probability of selection of the core network operators more accurately, and avoid the defect of failure of user attach or update location by the method of selecting the core network randomly.

Description

选择核心网的方法、设备及*** Method, device and system for selecting core network

技术领域 Technical field

本发明实施例涉及通信领域，尤其涉及网络共享中核心网的选择方法、设备及***。发明背景目前在 3GPP中引入了 MOCN (Multi-Operator Core Network, 多运营商）组网，如图 1所示，为典型的 MOCN与 IU FLEX网的组网结构。其中， Operation CN-A1、 Operation CN-A2、 Operation CN-A3与 RAN-1、 RNC-2组成 IU FLEX组网； Operation CN-B Operation CN- B2与 RAN-1、 RNC-2组成 IU FLEX组网； Operation- A的 CN、 Operation-B 的 CN、 Operation-C的 CN与 RAN-1、 RNC-2组成 MOCN组网。 The embodiments of the present invention relate to the field of communications, and in particular, to a method, device, and system for selecting a core network in network sharing. Background of the Invention A MOCN (Multi-Operator Core Network) network is currently introduced in 3GPP, as shown in Figure 1, which is a typical MOCN and IU FLEX network networking structure. Among them, Operation CN-A1, Operation CN-A2, Operation CN-A3 and RAN-1, RNC-2 form the IU FLEX network; Operation CN-B Operation CN-B2 and RAN-1, RNC-2 constitute the IU FLEX group Network; Operation-A CN, Operation-B CN, Operation-C CN and RAN-1, RNC-2 form the MOCN network.

现有的 MOCN组网情况下，提出了支持网络共享的 UE和不支持网络共享的 UE在位置登记请求或者附着请求时， RNC进行核心网运营商及和核心网的选择方案。 In the case of the existing MOCN networking, the RNC performs the selection scheme of the core network operator and the core network when the UE supporting the network sharing and the UE not supporting the network sharing request for location registration or attaching.

MOCN组网中对于不支持网络共享的 UE的位置登记或者网络附着的流程，其如图 2 所示，如下： The process of location registration or network attachment of a UE that does not support network sharing in the MOCN networking is as shown in FIG. 2, as follows:

步骤 1， UE与 RNC进行 RRC (Radio Resource Control, 无线资源控制）连接建立。步骤 2， UE发送的 Initial Direct Transfer (初始直传）消息给 RNC Step 1. The UE performs an RRC (Radio Resource Control) connection establishment with the RNC. Step 2: The Initial Direct Transfer message sent by the UE to the RNC

( Radio Network Controller, 无线网络控制器）。 (Radio Network Controller, Wireless Network Controller).

步骤 3， RNC收到 UE发送的 Initial Direct Transfer消息； RNC在该消息的 NAS(Network Access Server,网络接入服务器）部分附加 redirect attempt flag set (核心网路由重选标识），然后根据 Initial Direct Transfer中的 IDNNS (Intra Domain NAS Node Selector, 域内非接入层节点选择参数）选择一个核心网，并将带有 redirect attempt flag set标记的 Initial UE 消息发送给所选择的核心网。 Step 3: The RNC receives the Initial Direct Transfer message sent by the UE; the RNC attaches a redirect attempt flag set to the NAS (Network Access Server) part of the message, and then according to the Initial Direct Transfer The IDNNS (Intra Domain NAS Node Selector) selects a core network and sends an Initial UE message with a redirect attempt flag set flag to the selected core network.

RNC选择核心网的依据是：根据 IDNNS中的 NRI (Network Resource Identifier, 网络资源识别码）或者随机选取，具体方法包括： The RNC selects the core network based on: NRI (Network Resource Identifier) in IDNNS or randomly selected. The specific methods include:

如果 RNC能够根据所述 NRI选择到核心网，则 R C直接选择所述核心网，并将带有 redirect attempt flag set标记的消息发送给所选择的核心网。 If the RNC is able to select a core network based on the NRI, R C directly selects the core network and sends a message with a redirect attempt flag set flag to the selected core network.

如果 RNC不能够根据该 NRI选择到核心网，则随机选取一个核心网运营商，然后选择该核心网运营商的核心网，并将带有 redirect attempt flag set标记的消息发送给所选择的核心网。 If the RNC is unable to select the core network according to the NRI, randomly select a core network operator, then select the core network operator's core network, and send a message with the redirect attempt flag set flag to the selected core network. .

步骤 4，核心网收到 Initial UE消息后，将回应 Reroute Command (路由重选）或者 Reroute Complete (路由完成）消息。核心网从 Initial UE消息中、或者从 UE附着成功的前核心网或者直接从 UE那里得到用户的 IMSI (International Mobile Subscriber Identity, 国际移动用户识别码）后，核心网根据 IMSI确定用户的在本运营商中是否允许漫游，如果该核心网运营商不允许该用户漫游，则用户网络附着会失败。 Step 4: After receiving the Initial UE message, the core network will respond to the Reroute Command or Reroute Complete message. After the core network obtains the IMSI (International Mobile Subscriber Identity) of the user from the Initial UE message or from the former core network to which the UE is successfully attached or directly from the UE, the core network determines the user's operation according to the IMSI. Whether roaming is allowed in the quotient, if the core network operator does not allow the user to roam, the user network attachment will fail.

步骤 5，核心网发送 Reroute Command消息给 RNC,其中携带着获取到的 UE的 IMSI。歩骤 6， RNC收到 Reroute Command消息时，选择下一个核心网运营商，然后 RNC 发送一个新的消息给另外选择的核心网 B，并且附加上用户的 IMSI。 Step 5: The core network sends a Reroute Command message to the RNC, where the acquired IMSI of the UE is carried. Step 6. When the RNC receives the Reroute Command message, it selects the next core network operator, and then the RNC sends a new message to the other selected core network B, and attaches the user's IMSI.

KNC收到 Reroute Command消息时，选择下一个核心网运营商的算法是：在还没有选择过的核心网运营商中随机选择。 When KNC receives the Reroute Command message, the algorithm for selecting the next core network operator is: Randomly selected among the core network operators that have not been selected.

如果核心网 B允许用户 IMSI对应的 PLMN漫游，则执行步骤 7，核心网 B按照附着流程与 UE之间进行鉴权、加密等流程。 If the core network B allows the PLMN corresponding to the IMSI to roam, the core network B performs authentication, encryption, and the like according to the attaching process and the UE.

当鉴权通过后，执行步骤 8，核心网与 HLR (Home Location Register, 归属位置寄存器）进行消息交互，获得用户数据。 After the authentication is passed, go to step 8. The core network interacts with the HLR (Home Location Register) to obtain user data.

如果用户数据漫游禁止，则执行步骤 9，核心网 B发送 Reroute Command (路由重选）消息给 RNC，其中包括拒绝原因值和 IMSI。 . If user data roaming is disabled, go to step 9. Core network B sends a Reroute Command message to the RNC, including the reject reason value and IMSI. .

步骤 10， RNC重新选择一个核心网 C，按照第 6步处理。 Step 10. The RNC reselects a core network C and processes it according to step 6.

步骤 11，如果核心网 C允许用户 IMSI对应的 PLMN (Public Land Mobile Network, 公用陆地移动通信网）漫游，核心网 C按照附着流程进行鉴权、加密等流程。 Step 11: If the core network C allows the PLMN (Public Land Mobile Network) to roam the user, the core network C performs authentication, encryption, and the like according to the attaching process.

步骤 12，如果用户在核心网 C附着成功，则核心网 C为用户分配一个 TMSKTempomry Mobile Subscriber Identity，临时移动用户标识）或者 P-TMSI，其中包含核心网 C的 NRJ。 HLR向核心网 B发送 Cancel Location消息。 Step 12: If the user attaches successfully to the core network C, the core network C allocates a TMSKTempomry Mobile Subscriber Identity, a temporary mobile subscriber identity, or a P-TMSI, which includes the NRJ of the core network C. The HLR sends a Cancel Location message to the core network B.

之后执行步骤 13，核心网 C发送 Reroute Complete (路由完成）消息其中包含 Attach accept给 RNC。 RNC给用户发送附着成功消息给 UE。 After step 13, core network C sends a Reroute Complete message containing Attach accept to the RNC. The RNC sends an attach success message to the UE to the UE.

步骤 14, UE收到附着成功消息后，保存 TMSI/P-TMSI。 Step 14. After receiving the attach success message, the UE saves the TMSI/P-TMSI.

之后执行步骤 15， UE做出响应，发送 Attach Complete消息给核心网 C。 Then, in step 15, the UE responds and sends an Attach Complete message to the core network C.

由现有技术的技术方案可以看出，对于不支持网络共享的 UE， RNC收到该 UE发送的 Initial Direct Transfer消息，选择核心网的算法是：根据 IDNNS中的 NRI或者随机选取；此选择方法存在如下缺陷： It can be seen from the prior art that, for a UE that does not support network sharing, the RNC receives the Initial Direct Transfer message sent by the UE, and the algorithm for selecting the core network is: according to the NRI in the IDNNS or randomly selected; There are the following defects:

1、不能够解决当 R C根据 NRI匹配到的核心网发生故障时，不支持网络共享特性的 UE如何选择核心网运营商及对应的核心网。 1. It cannot solve how the UE that does not support the network sharing feature selects the core network operator and the corresponding core network when the R C fails according to the NRI matching core network.

2、当 R C不能够根据该 NRI选择到核心网时，其通过随机选择的方法，容易导致用户附着或者位置登记失败。而且，随机选择核心网运营商的这种处理方式会导致 RNC 的负荷升高，对 RNC的性能影响很大。 2. When the RC cannot select the core network according to the NRI, it is easy to cause by randomly selecting the method. User attachment or location registration failed. Moreover, the random selection of the core network operator's processing method will lead to an increase in the RNC's load, which has a great impact on the performance of the RNC.

另外，在 RNC收到 Reroute Command消息时，选择下一个核心网运营商的算法是：在还没有选择过的核心网运营商中随机选择。现有技术基于这种盲目的选择方法，会导致如下缺陷出现： In addition, when the RNC receives the Reroute Command message, the algorithm for selecting the next core network operator is: Randomly selected among the core network operators that have not been selected. The prior art is based on this blind selection method, which leads to the following defects:

1、如果核心网的运营商有多个，一次用户附着或者位置登记，可能造成 RNC多次重新选择核心网，耗时太长，可能导致用户附着或者位置登记失败。而且， 1. If there are multiple operators of the core network, one user attachment or location registration may cause the RNC to reselect the core network multiple times, which takes too long, which may result in user attachment or location registration failure. And,

2、随机选择核心网运营商的这种处理方式可能导致 RNC的负荷升高，对 RNC的性能影响很大。 2. Random selection of this type of processing by the core network operator may result in an increase in the load on the RNC and a significant impact on the performance of the RNC.

发明内容 Summary of the invention

本发明实施例提供一种选择核心网的方法、设备及***。 Embodiments of the present invention provide a method, device, and system for selecting a core network.

本发明实施例是通过以下技术方案实现的： The embodiments of the present invention are implemented by the following technical solutions:

本发明实施例提供一种选择核心网的方法，包括： An embodiment of the present invention provides a method for selecting a core network, including:

当不支持网络共享的用户设备 UE在本共享的网络进行网络附着或者位置登记时，无线网络控制器 RNC获取用户的域内非接入层节点选择参数 IDNNS； When the user equipment UE that does not support network sharing performs network attachment or location registration on the shared network, the radio network controller RNC acquires the in-domain non-access stratum node selection parameter IDNNS of the user;

若所述 IDNNS是从临时移动用户标识 TMSI或分组域临时移动用户标识 P- TMSI导出，则计算出所述 TMSI或 P-TMSI对应的网络资源识别码 NRI, 并根据所述 NRI选择核心网； If the IDNNS is derived from the temporary mobile subscriber identity TMSI or the packet domain temporary mobile subscriber identity P-TMSI, calculate a network resource identifier NRI corresponding to the TMSI or P-TMSI, and select a core network according to the NRI;

若所述 IDNNS不是从临时移动用户标识 TMSI或分组域临时移动用户标识 P-TMSI 导出，则 RNC获取用户的国际移动用户识别码 IMSI, RNC把所述获得的用户的 IMSI与 RNC中的 IMSI号段进行匹配，当所述用户的 IMSI能够匹配到 IMSI号段时，则优先在所述匹配到的 IMSI号段对应的核心网运营商所对应的核心网中选择核心网。本发明实施例提供一种无线网络控制器，包括： If the IDNNS is not derived from the Temporary Mobile Subscriber Identity TMSI or the Packet Domain Temporary Mobile Subscriber Identity P-TMSI, the RNC obtains the user's International Mobile Subscriber Identity (IMSI), and the RNC compares the obtained IMSI of the user with the IMSI number of the RNC. The segment is matched. When the IMSI of the user can be matched to the IMSI number segment, the core network is selected in the core network corresponding to the core network operator corresponding to the matched IMSI number segment. An embodiment of the present invention provides a radio network controller, including:

存储模块一，用于存储 NRI与核心网运营商的 PLMN ID的对应关系； a storage module one, configured to store a correspondence between the NRI and a PLMN ID of the core network operator;

存储模块二，用于存储 IMSI号段与核心网运营商 PLMN ID对应关系； a storage module 2, configured to store a correspondence between an IMSI number segment and a core network operator PLMN ID;

IDNNS获取解析模块，用于在接收到初始直传消息后获取 IDNNS,并解析确定所述 IDNNS的获取方式； The IDNNS acquisition parsing module is configured to obtain an IDNNS after receiving the initial direct transmission message, and parse and determine the acquisition manner of the IDNNS;

NRI获取模块，用于在所述 IDNNS获取解析模块确定所述 IDNNS从 TMSI或 P-TMSI 中导出时，获取所述 TMSI或 P-TMSI对应的 NRI; An NRI obtaining module, configured to acquire an NRI corresponding to the TMSI or P-TMSI when the IDNNS acquisition parsing module determines that the IDNNS is derived from the TMSI or the P-TMSI;

NRI匹配模块，用于把所述 NRI获取模块获取的 NRL 和存储模块一中存储的 NRI 与核心网运营商 PLMN ID对应关系进行匹配，并根据匹配结果选择核心网； An NRI matching module, configured to acquire the NRL acquired by the NRI acquiring module and the NRI stored in the storage module one Matching with the core network operator PLMN ID correspondence, and selecting the core network according to the matching result;

IMSI获取模块，用于在所述 IDN S获取解析模块确定所述 IDNNS从 IMSI中导出时，获取所述 IMSI; An IMSI obtaining module, configured to acquire the IMSI when the IDN S acquisition parsing module determines that the IDNNS is derived from the IMSI;

IMSI匹配模块，用于把所述 IMSI获取模块获取的 IMSI，和存储模块二中存储的 IMSI 号段与核心网运营商 PLMN ID对应关系进行匹配，并根据匹配结果选择核心网。本发明实施例提供一种选择核心网的***，包括：无线网络控制器、多个核心网运营商及对应的多个核心网； The IMSI matching module is configured to match the IMSI acquired by the IMSI obtaining module and the IMSI number segment stored in the storage module 2 with the core network operator PLMN ID, and select the core network according to the matching result. An embodiment of the present invention provides a system for selecting a core network, including: a radio network controller, a plurality of core network operators, and a corresponding plurality of core networks;

所述无线网络控制器设置有： The wireless network controller is configured with:

NRI获取模块，用于在所述 IDNNS获取解析模块确定所述 IDNNS从 TMSI或 P-TMSI 中导出时，获取所述 TMSI或 P- TMSI对应的 NRI; An NRI obtaining module, configured to acquire an NRI corresponding to the TMSI or P-TMSI when the IDNNS acquisition parsing module determines that the IDNNS is derived from the TMSI or the P-TMSI;

NRI匹配模块，用于把所述 NRI获取模块获取的 NRL 和存储模块一中存储的 NRI 与核心网运营商 PLMN ID对应关系进行匹配，并根据匹配结果选择核心网； The NRI matching module is configured to match the NRL obtained by the NRI acquiring module and the NRI stored in the storage module 1 with the PLMN ID of the core network operator, and select the core network according to the matching result;

IMSI获取模块，用于在所述 IDNNS获取解析模块确定所述 IDNNS从 IMSI中导出时，获取所述 IMSI; An IMSI obtaining module, configured to acquire the IMSI when the IDNNS acquisition parsing module determines that the IDNNS is derived from the IMSI;

IMSI匹配模块，用于把所述 IMSI获取模块获取的 IMSI,和存储模块二中存储的 IMSI 号段与核心网运营商 PLMN ID对应关系进行匹配，并根据匹配结果选择核心网。由上述本发明实施例提供的技术方案可以看出，本发明实施例对 RNC的核心网运营商选择功能进行了优化，当不支持网络共享特性的 UE进行附着请求或者位置登记请求时，使 RNC选择的核心网运营商更加准确，能够减少一次位置登记或者网络附着流程中 R C进行核心网运营商重新选择的次数，从而提高了位置登记或者附着的成功率。 The IMSI matching module is configured to match the IMSI acquired by the IMSI obtaining module and the IMSI number segment stored in the storage module 2 with the core network operator PLMN ID, and select the core network according to the matching result. It can be seen that the core network operator selection function of the RNC is optimized according to the technical solution provided by the foregoing embodiment of the present invention. When the UE that does not support the network sharing feature performs an attach request or a location registration request, the RNC is enabled. The selected core network operator is more accurate, and can reduce the number of times the RC performs core network operator reselection in a location registration or network attachment process, thereby improving the success rate of location registration or attachment.

另外，不支持网络共享的用户设备 UE进行网络附着或者位置登记时，所述无线网络控制器 RNC为所述 UE选择对应的核心网；并当所选择的核心网发生故障时，则所述 R C优先选择所述核心网对应的核心网运营商中的其它核心网。因此本发明给出了当 RNC中 NRI对应的核心网故障时，不支持网络共享特性的 UE选择对应的核心网的具体实施方案。且当 RNC不能够根据该 NRI选择到核心网时，本发明优先选择所述 NRI能够匹配到核心网运营商的核心网，从而避免了现有技术中通过随机选择的方法，容易导致的用户附着或者位置登记失败的弊端，并且避免了现有技术中由于随机选择核心网运营商导致； NC的负荷升高，影响 RNC的性能的缺陷。 In addition, when the user equipment UE that does not support network sharing performs network attachment or location registration, the radio network controller RNC selects a corresponding core network for the UE; and when the selected core network fails, the RC takes precedence. Select other core networks among the core network operators corresponding to the core network. Therefore, the present invention provides a specific implementation scheme for a UE that does not support the network sharing feature to select a corresponding core network when the core network corresponding to the NRI in the RNC is faulty. When the RNC is not able to select the core network according to the NRI, the present invention preferentially selects that the NRI can be matched to the core network operator's core network, thereby avoiding the user's attachment caused by the random selection method in the prior art. Or the disadvantage of location registration failure, and avoiding the defect in the prior art due to random selection of the core network operator; the load of the NC is increased, which affects the performance of the RNC.

附图简要说明 BRIEF DESCRIPTION OF THE DRAWINGS

图 1为背景技术中 MOCN与 IU FLEX的组网示意图； 1 is a schematic diagram of networking of MOCN and IU FLEX in the background art;

图 2为背景技术中不支持网络共享特性的 UE进行网络附着时的流程图； 2 is a flow chart of a UE that does not support a network sharing feature in the background network when the network is attached;

图 3为本发明所述方法实施例流程图； 3 is a flow chart of an embodiment of the method of the present invention;

图 4为本发明提供的第一实施例的流程图； Figure 4 is a flow chart of a first embodiment provided by the present invention;

图 5为本发明提供的第二实施例的流程图； Figure 5 is a flow chart of a second embodiment of the present invention;

图 6为本发明提供的第三实施例的流程图； Figure 6 is a flow chart of a third embodiment provided by the present invention;

图 7为本发明提供的第四实施例的流程图； Figure 7 is a flow chart of a fourth embodiment provided by the present invention;

图 8为本发明提供的第五实施例的流程图； Figure 8 is a flow chart of a fifth embodiment provided by the present invention;

图 9为本发明提供的第六实施例的流程图。 Figure 9 is a flow chart of a sixth embodiment of the present invention.

实施本发明的方式， Mode for carrying out the invention,

在完成本发明实施例之前，需要在 RNC中建立 NRI与核心网运营商 PLMN ID (共用陆地移动网标识）的对应关系，包括： Before the implementation of the embodiment of the present invention, the mapping between the NRI and the core network operator PLMN ID (shared land mobile network identifier) needs to be established in the RNC, including:

建立 NRI与一个核心网运营商的 PLMN ID的对应关系，以及所述核心网运营商与 MOCN组网中的其它核心网运营商的共享关系。 Establish a correspondence between the NRI and a PLMN ID of a core network operator, and a sharing relationship between the core network operator and other core network operators in the MOCN network.

其中，建立 NRI对应的核心网运营商与 MOCN组网中的其它核心网运营商的共享关系包括- The shared relationship between the core network operator that establishes the NRI and other core network operators in the MOCN network includes -

1、建立所述核心网运营商的 PLMN ID与 MOCN组网中的其他核心网运营商的 PLMN ID的对应关系。 1. Establish a correspondence between the PLMN ID of the core network operator and the PLMN ID of other core network operators in the MOCN networking.

2、为存在共享关系的所有核心网运营商分配优先级。如果不分配明确的优先级别，则表明优先级别相同。 2. Assign priorities to all core network operators that have a shared relationship. If you do not assign an explicit priority level, the priority level is the same.

通过上述设置，本核心网运营商的核心网中的用户，在本核心网运营商的核心网全部故障或者全部拥塞时，可以使用与本核心网运营商存在共享关系的其他核心网运营商的核心网。 With the above configuration, users in the core network of the core network operator can use other core network operators that share the relationship with the core network operator when all the core network operators of the core network are faulty or all are congested. Core Network.

还需要在 RNC中建立用户的 IMSI号段与核心网运营商 PLMN ID间的对应关系，具体描述如下： It is also necessary to establish a correspondence between the user's IMSI number segment and the core network operator PLMN ID in the RNC, which is described as follows:

a、相同的 IMSI号段可以对应多个 PLMN ID。如果某些运营商与共享网络中的多个核心网运营商签约漫游许可，则该 IMSI号段对应多个核心网运营商的 PLMN ID。 a. The same IMSI number segment can correspond to multiple PLMN IDs. If some operators subscribe to roaming licenses with multiple core network operators in the shared network, the IMSI number segment corresponds to the PLMN IDs of multiple core network operators.

当相同的 IMSI号段对应多个核心网运营商的标识时，遵循下述原则确定各个核心网运营商的标识的优先级，并且该优先级应该在共享网络的核心网运营商签署的共享协议中体现： When the same IMSI number segment corresponds to the identifiers of multiple core network operators, the priority of each core network operator's identity is determined according to the following principles, and the priority should be a shared protocol signed by the core network operator of the shared network. Reflected in:

相同的 IMSI号段对应的每个核心网运营商的 PLMN ID对应一个优先级；如果没有明确的优先级，则优先级相同。不同的 IMSI号段中对应的相同核心网运营商的 PLMN ID 的优先级可以不同。 The PLMN ID of each core network operator corresponding to the same IMSI number segment corresponds to a priority; if there is no clear priority, the priority is the same. The priority of the corresponding PLMN ID of the same core network operator in different IMSI number segments may be different.

b、相同的 IMSI号段可以对应唯一的核心网运营商的 PLMN ID。 b. The same IMSI number segment can correspond to the PLMN ID of the unique core network operator.

如果某些运营商与其它核心网运营商不共享，则该 IMSI号段对应唯一的一个运营商。 If some operators do not share with other core network operators, the IMSI number segment corresponds to the only one carrier.

通过上述设置，当不支持网络共享的 UE进行网络附着或者位置登记时，如果能够从 RRC连接请求（RRC CONNECTION REQUEST) 消息中获得用户的身份标识 IMSI, 则将所述 IMSI与 RNC中的 IMSI号段进行匹配，如果能够匹配到，则根据匹配到的 IMSI 号段选择核心网运营商，如果不能够匹配到，则从未匹配到的 IMSI号段对应的核心网运营商中进行选择。本发明提供一种选择核心网运营商及核心网实施例，提如图 3所示，具体包括如下步骤： With the above setting, when the UE that does not support network sharing performs network attachment or location registration, if the identity identifier IMSI of the user can be obtained from the RRC CONNECTION REQUEST message, the IMSI number in the IMSI and the RNC is obtained. The segments are matched. If they can be matched, the core network operators are selected according to the matched IMSI number segments. If they are not matched, the core network operators corresponding to the unmatched IMSI segments are selected. The present invention provides an embodiment for selecting a core network operator and a core network, as shown in FIG. 3, which specifically includes the following steps:

步骤 1， RNC接收初始直传（Initial Direct Transfer) 消息，并根据所述接收到的初始直传消息获取 IDNNS。 Step 1. The RNC receives an Initial Direct Transfer message and obtains an IDNNS according to the received initial direct transfer message.

步骤 2，判断所述 IDNNS是否从 TMSI或者 P-TMSI中导出。 Step 2: Determine whether the IDNNS is derived from the TMSI or the P-TMSI.

若所述 IDNNS不是从 TMSI或者 P-TMSI中导出而是从 IMSI中导出，则执行流程①；若所述 IDNNS是从 TMSI或者 P-TMSI中导出，则执行流程②。 Flow 1 is performed if the IDNNS is not derived from the TMSI or P-TMSI but is derived from the IMSI; if the IDNNS is derived from the TMSI or P-TMSI, then Flow 2 is performed.

下面分别对流程①和流程②进行详细说明。 The flow 1 and the flow 2 are described in detail below.

如图 4所示，为流程①所述 IDNNS是从 IMSI中导出时，选择核心网运营商及核心网第一实施例操作流程，具体包括如下步骤： As shown in FIG. 4, when the IDNNS is derived from the IMSI, the operation flow of the first embodiment of the core network operator and the core network is selected, which specifically includes the following steps:

步骤 1， RNC获取用户的 IMSI。 Step 1. The RNC obtains the user's IMSI.

所述 RNC获取用户的 IMSI的方法包括： The method for the RNC to acquire the IMSI of the user includes:

当不支持网络共享的 UE在本共享的网络进行网络附着或者位置登记时， RNC根据无线资源控制 R C消息获取用户的 IMSI; 或，当该用户已经有 RRC连接的情况下， RNC已经获取了该用户的 IMSI; 或，当不支持网络共享的 UE在本共享的网络进行网络附着或者位置登记时，如果 RNC 确认 RRC消息中的用户标识不是用户的 IMSI,则根据相关协议随机选择一个核心网运营商，并根据相关协议选择所述核心网运营商对应的核心网，当选择的核心网在附着和位置登记流程中发送 comm id id消息或者路由重选消息给 RNC，则 RNC根据所述消息中获取到用户的 IMSI。 When the UE that does not support network sharing performs network attachment or location registration on the shared network, the RNC acquires the IMSI of the user according to the radio resource control RC message; or When the user already has an RRC connection, the RNC has acquired the IMSI of the user; or, when the UE that does not support the network sharing performs network attachment or location registration on the shared network, if the RNC confirms the user in the RRC message If the identifier is not the IMSI of the user, a core network operator is randomly selected according to the relevant protocol, and the core network corresponding to the core network operator is selected according to the relevant protocol, and the selected core network sends the comm id id in the attaching and location registration process. The message or the route reselection message is sent to the RNC, and the RNC obtains the IMSI of the user according to the message.

步骤 2，当 RNC获取到用户的 IMSI后，则根据所述用户的 IMSI与 RNC中的 IMSI号段进行匹配； Step 2: After the RNC obtains the IMSI of the user, the RSI matches the IMSI number segment in the RNC according to the IMSI of the user;

步骤 3，判断所述用户的 IMSI是否能够匹配到 IMSI号段； Step 3: Determine whether the IMSI of the user can match the IMSI number segment.

当确认所述用户的 IMSI能够匹配到 IMSI号段时，则执行步骤 4; When it is confirmed that the IMSI of the user can be matched to the IMSI number segment, step 4 is performed;

如果没有匹配到，则执行步骤 9，根据相关协议随机选择一个核心网运营商，并根据相关协议选择所述核心网运营商对应的核心网，接着执行步骤 10。 If there is no match, step 9 is performed: a core network operator is randomly selected according to the relevant protocol, and the core network corresponding to the core network operator is selected according to the relevant protocol, and then step 10 is performed.

步骤 4，判断用户的 IMSI匹配到的 IMSI号段对应的核心网运营商是否全部选择完毕，若没有，则执行步骤 5，即在所述用户的 IMSI匹配到的 IMSI号段对应的核心网运营商中选择没有被选择过的核心网运营商，并根据相关协议选择所述核心网运营商所对应的核心网；若已经选择完毕，则执行步骤 6。 Step 4: Determine whether the core network operators corresponding to the IMSI number segment matched by the IMSI of the user are all selected. If not, perform step 5, that is, the core network operation corresponding to the IMSI number segment matched by the IMSI of the user. The core network operator that has not been selected is selected by the quotient, and the core network corresponding to the core network operator is selected according to the relevant protocol; if the selection has been completed, step 6 is performed.

步骤 6，判断除用户的 IMSI匹配到的 IMSI号段对应核心网运营商外，其他所有核心网运营商是否全部被选择过，若全部被选择过，则执行步骤 7，即结束核心网运营商的选择流程，并根据相关协议处理后续流程；否则，执行步骤 8，即在所述未被选择过的核心网运营商中进行选择，并根据相关协议选择所述核心网运营商所对应的核心网。 Step 6: It is determined whether all other core network operators are selected except for the IMSI number segment to which the user's IMSI matches, and if all are selected, step 7 is executed, that is, the core network operator is terminated. The selection process, and the subsequent process is processed according to the relevant protocol; otherwise, step 8 is performed, that is, the core network operator that has not been selected is selected, and the core corresponding to the core network operator is selected according to the relevant protocol. network.

步骤 10, 判断选择所述核心网运营商对应的核心网过程中是否接收到路 ώ重选消息，若收到时，则继续执行步骤 4; 否则执行步骤 7，即结束核心网运营商的选择流程，并根据相关协议处理后续流程。本发明提供的第二实施例，是 R C根据无线资源控制 RRC消息获取用户的 IMSI后选择核心网运营商和核心网的流程，如图 5所示，具体包括如下步骤： Step 10: Determine whether a route reselection message is received in the process of selecting the core network corresponding to the core network operator, and if yes, proceed to step 4; otherwise, execute step 7 to end the selection of the core network operator. Process, and process the follow-up process according to the relevant agreement. The second embodiment of the present invention provides a process for the R C to select the core network operator and the core network after the user obtains the IMSI of the user according to the radio resource control RRC message. As shown in FIG. 5, the method includes the following steps:

步骤 101，当 RNC从 RRC连接请求（RRC CONNECTION REQUEST)消息中能够获得用户的 IMSI时，则 RNC记录该 IMSI。 Step 101: When the RNC can obtain the IMSI of the user from the RRC CONNECTION REQUEST message, the RNC records the IMSI.

步骤 102，使用用户的 IMSI与 RNC中的 IMSI号段进行匹配。 Step 102: Match the IMSI number segment in the RNC with the user.

如果能够匹配到 IMSI号段，则按照第 103步进行处理； If it can match the IMSI number segment, proceed according to step 103;

如果不能匹配到，则按照第 115步进行处理，即随机选择一个核心网运营商，并根据相关协议选择所述核心网运营商对应的核心网。 If it cannot be matched, proceed according to step 115, that is, randomly select a core network operator, and root The core network corresponding to the core network operator is selected according to the relevant protocol.

步骤 103，根据 IMSI号段与核心网运营商标识的对应关系，在匹配到的 IMSI号段对应的各个核心网运营商中，按照各核心网运营商的优先级从高到低的先后顺序，选择核心网运营商，并按照相关协议处理后续流程。 Step 103: According to the correspondence between the IMSI number segment and the core network operator identifier, in the core network operators corresponding to the matched IMSI number segments, according to the priorities of the core network operators from high to low, Select the core network operator and follow the relevant procedures to handle the follow-up process.

在按照相关协议处理后续流程的过程具体包括：根据 IDNNS选择所述核心网运营商的核心网；如果该核心网运营商对应的核心网全部故障或者拥塞，则在没有被选择过的核心网运营商中，按照其对应的优先级从高到低的先后顺序重新选择核心网运营商，并根据 IDNNS选择所述核心网运营商的核心网，然后根据相关协议处理后续的流程。 The process of processing the subsequent process according to the relevant protocol specifically includes: selecting the core network of the core network operator according to the IDNNS; if the core network corresponding to the core network operator is all faulty or congested, operating in the core network that has not been selected In the quotient, the core network operators are reselected according to their corresponding priorities from high to low, and the core network operator's core network is selected according to IDNNS, and then the subsequent processes are processed according to relevant protocols.

步骤 104，判断在后续的流程中是否收到路由重选消息。 Step 104: Determine whether a route reselection message is received in a subsequent process.

若收到，则执行步骤 105; 否则执行步骤 114，即结束核心网运营商的选择流程，根据相关协议处理相关流程。 If yes, go to step 105; otherwise, go to step 114 to end the selection process of the core network operator and process the related process according to the relevant protocol.

步骤 105，判断匹配到的 IMSI号段对应的运营商是否全部被选择过，若全部被选择过，则执行步骤 109至步骤 114的处理过程；否则，执行步骤 106; Step 105, it is determined whether the operators corresponding to the matched IMSI number segments are all selected, if all are selected, the processing of steps 109 to 114 is performed; otherwise, step 106 is performed;

步骤 106，按照优先级从高到低的先后顺序选择没有被选择过的匹配到的 IMSI号段对应的核心网运营商，并根据相关协议选择核心网，然后执行步骤 107。 Step 106: Select a core network operator corresponding to the matched IMSI segment that has not been selected according to the priority sequence from the highest priority, and select the core network according to the relevant protocol, and then perform step 107.

步骤 107，判断所述核心网是否选择成功，若选择成功，则执行歩骤 108，选择该核心网，并根据相关协议处理相关流程，然后执行步骤 104，继续判断在后续的流程中是否收到路由重选消息的过程； Step 107: Determine whether the core network is successfully selected. If the selection is successful, perform step 108, select the core network, and process the related process according to the relevant protocol, and then perform step 104 to continue to determine whether the subsequent process is received. The process of routing reselection messages;

如果所述核心网未选择成功，则转入步骤 105。 If the core network is not selected successfully, then go to step 105.

步骤 109至步骤 114的操作过程为： The operation steps from step 109 to step 114 are:

步骤 109，判断除用户的 IMSI匹配到的 IMSI号段对应核心网运营商外，其他所有的核心网运营商是否被全部选择过。 Step 109: Determine whether all other core network operators are selected except for the core network operator corresponding to the IMSI number segment matched by the user.

若全部被选择过，则执行步骤 114，即结束核心网运营商的选择流程，并根据相关协议处理相关流程； If all are selected, step 114 is executed to end the selection process of the core network operator, and the related process is processed according to the relevant protocol;

若还没有被全部选择过，则执行步骤 110，即在所述没有被选择过的核心网运营商中，按照其优先级从高到低的先后顺序选择核心网运营商，并根据相关协议选择所述核心网运营商对应的核心网。 If all of the core network operators that have not been selected are selected, the core network operators are selected according to their priorities from high to low, and are selected according to relevant protocols. The core network corresponding to the core network operator.

步骤 111，判断该核心网运营商的核心网是否选择成功，若成功，则执行步骤 112，即选择该核心网，并根据相关协议处理相关流程，然后执行步骤 113 ; 如果未选择成功，则转入执行步骤 109。 Step 111: Determine whether the core network operator's core network is successfully selected. If successful, perform step 112, select the core network, and process the related process according to the relevant protocol, and then perform step 113; if not selected, then turn Go to step 109.

步骤 113，判断在后续的流程中是否收到路由重选消息，若收到，则执行步骤 109; 否则执行歩骤 114，即结束核心网运营商的选择流程，根据相关协议处理相关流程。本发明提供的第三实施例，是 RNC根据无线资源控制 RRC消息获取用户的 IMSI后选择核心网运营商和核心网的流程，如图 6所示，其与第二实施例的区别之处在于步骤 111，在此实施例的步骤 111中，首先对该核心网运营商的核心网是否选择成功进行判断，若成功选择，则转入步骤 108; 若未成功选择，则转入步骤 109的处理的流程。 Step 113, it is determined whether a route reselection message is received in the subsequent process, if yes, step 109 is performed; Otherwise, step 114 is executed, that is, the selection process of the core network operator is ended, and the related process is processed according to the relevant protocol. The third embodiment provided by the present invention is a process for the RNC to select the core network operator and the core network after acquiring the IMSI of the user according to the radio resource control RRC message, as shown in FIG. 6, which is different from the second embodiment in that Step 111: In step 111 of this embodiment, first, whether the core network operator's core network is successfully selected is determined. If the selection is successful, the process proceeds to step 108; if the selection is not successful, the process proceeds to step 109. Process.

第三实施例比第二实施例运行的速度慢，这是因为其每次均要多运行歩骤 105的处理过程。本发明提供的第四实施例，是当不支持网络共享的 UE在本共享的网络进行网络附着或者位置登记时，如果 RNC确认 RRC消息中的用户标识不是用户的 IMSI, 则根据相关协议随机选择一个核心网运营商，并根据相关协议选择所述核心网运营商对应的核心网，当在选择核心网的过程中收到路由重选消息后，则根据所述路由重选消息获取到用户的 IMSI, 从而选择核心网运营商及核心网的流程。其具体实施过程如图 7所示，包括：步骤 201，不支持网络共享的 UE进行网络附着或者位置登记时， R C确认 RRC连接请求（RRC CONNECTION REQUEST) 消息中的用户身份标识不是用户的 IMSI时，则随机选择一个核心网运营商，并根据相关协议选择所述核心网运营商的核心网。 The third embodiment operates at a slower speed than the second embodiment because it has to perform the processing of step 105 more frequently each time. The fourth embodiment of the present invention provides that when the UE that does not support network sharing performs network attachment or location registration on the shared network, if the RNC confirms that the user identifier in the RRC message is not the IMSI of the user, the RNC randomly selects according to the relevant protocol. a core network operator, and selecting a core network corresponding to the core network operator according to the relevant protocol, and after receiving the route reselection message in the process of selecting the core network, acquiring the user according to the route reselection message IMSI, thus selecting the processes of the core network operators and the core network. The specific implementation process is as shown in FIG. 7, and includes: Step 201: When the UE that does not support network sharing performs network attachment or location registration, the RC confirms that the user identity in the RRC CONNECTION REQUEST message is not the IMSI of the user. Then, a core network operator is randomly selected, and the core network of the core network operator is selected according to the relevant protocol.

步骤 202，判断在后续的流程中是否收到路由重选消息，若收到，则执行步骤 203 ; 否则，执行步骤 209，即结束核心网运营商的选择流程，根据相关协议处理相关流程。 Step 202: Determine whether a route reselection message is received in the subsequent process. If yes, go to step 203; otherwise, go to step 209 to end the core network operator's selection process and process the related process according to the relevant protocol.

步骤 203，根据所述路由重选消息获取用户的 IMSI, 并判断所述用户的 IMSI是否能够匹配到对应的 IMSI号段，若能够匹配到，则执行步骤 204; Step 203: Obtain an IMSI of the user according to the route reselection message, and determine whether the IMSI of the user can match the corresponding IMSI number segment. If yes, go to step 204;

若不能够匹配到，则执行步骤 215，即随机选择一个核心网运营商，并根据相关协议选择所述核心网运营商的核心网。 If the matching is not possible, step 215 is performed, that is, a core network operator is randomly selected, and the core network of the core network operator is selected according to the relevant protocol.

步骤 204，判断所匹配到的 IMSI号段对应的核心网运营商是否全部被选择过，若全部未被选择过，则执行步骤 205; 否则，执行步骤 210至步骤 214的处理过程。 Step 204: Determine whether the core network operators corresponding to the matched IMSI number segments are all selected. If all of the core network operators are not selected, go to step 205; otherwise, perform the processing from step 210 to step 214.

步骤 205，根据 IMSI号段与核心网运营商标识的对应关系，在匹配到的 IMSI号段对应的各个核心网运营商中，按照所述核心网运营商的优先级从高到低的先后顺序，选择核心网运营商，并根据相关协议选择所述运营商核心网对应的核心网。然后执行步骤 206。 Step 205: According to the correspondence between the IMSI number segment and the core network operator identifier, in the core network operators corresponding to the matched IMSI number segment, according to the priorities of the core network operators from high to low Select a core network operator and select a core network corresponding to the carrier core network according to the relevant protocol. Then step 206 is performed.

根据相关协议选择所述运营商核心网对应的核心网的具体处理过程为：根据 IDNNS 选择所述核心网运营商的核心网，然后根据相关协议处理后续的流程。步骤 206，判断该核心网是否选择成功，若选择成功，则执行歩骤 207; 若未能选择成功，则转入步骤 204的处理过程。 The specific processing procedure of selecting the core network corresponding to the operator core network according to the relevant protocol is: selecting the core network of the core network operator according to the IDNNS, and then processing the subsequent process according to the relevant protocol. In step 206, it is determined whether the core network is successfully selected. If the selection is successful, step 207 is performed; if the selection is not successful, the process proceeds to step 204.

步骤 207，选择该核心网，并根据相关协议处理相关流程。 Step 207: Select the core network, and process related processes according to relevant protocols.

步骤 208，判断在后续的流程中是否收到路由重选消息，若收到，则执行步骤 204; 否则，执行步骤 209，即结束核心网运营商的选择流程，根据相关协议处理相关流程。 In step 208, it is determined whether the route reselection message is received in the subsequent process. If yes, step 204 is performed; otherwise, step 209 is executed to end the selection process of the core network operator, and the related process is processed according to the relevant protocol.

在步骤 204中，当确认所匹配到的 IMSI号段对应的核心网运营商全部被选择过吋，则在没有被选择过的核心网运营商中进行选择，即执行步骤 210至步骤 214的处理过程，具体处理过程如下： In step 204, when it is confirmed that all the core network operators corresponding to the matched IMSI number segment are selected, the selection is performed among the core network operators that have not been selected, that is, the processing of steps 210 to 214 is performed. The process is as follows:

步骤 210，判断除用户的 IMSI匹配到的 IMSI号段对应核心网运营商外，其他所有的核心网运营商是否被全部选择过，如果全部被选择过，则执行步骤 209，即结束核心网运营商的选择流程，根据相关协议处理相关流程； In step 210, it is determined whether all other core network operators are selected according to the IMSI number segment corresponding to the IMSI of the user, and if all the core network operators are selected, if all are selected, step 209 is executed, that is, the core network operation is terminated. The selection process of the business, processing related processes according to relevant agreements;

如果未全部被选择过，则执行步骤 211。 If not all have been selected, step 211 is performed.

步骤 211，在所有没有被全部选择过的核心网运营商中，按照其优先级从高到低的先后顺序选择核心网运营商，并根据相关协议选择所述核心网运营商对应的核心网。然后执行步骤 212。 Step 211: Select, among all the core network operators that have not been selected, the core network operators according to the order of their priorities from high to low, and select the core network corresponding to the core network operators according to the relevant protocol. Then perform step 212.

步骤 212，判断该核心网是否选择成功，若选择成功，则执行步骤 213，即选择所述核心网，并根据相关协议处理相关流程，然后执行步骤 214; 若没有选择成功，则转入步骤 210。 Step 212: Determine whether the core network is successfully selected. If the selection is successful, perform step 213, that is, select the core network, and process the related process according to the relevant protocol, and then perform step 214; if no selection is successful, proceed to step 210. .

步骤 214，判断在后续的流程中是否收到路由重选消息，若收到，则执行步骤 210; 否则，执行步骤 209，即结束核心网运营商的选择流程，根据相关协议处理相关流程。本发明提供的第五实施例，是当不支持网络共享的 UE在本共享的网络进行网络附着或者位置登记时，如果 RNC确认 RRC消息中的用户标识不是用户的 IMSI, 则根据相关协议随机选择一个核心网运营商，并根据相关协议选择所述核心网运营商对应的核心网，当在选择核心网的过程中收到路由重选消息后，则根据所述路由重选消息获取到用户的 IMSI，从而选择核心网运营商及核心网的流程。具体实施过程如图 8所示，其与第四实施例的区别之处在于步骤 212及其之后的处理过程，此实施例中具体描述如下：步骤 212，判断该核心网是否选择成功，若选择成功，则执行步骤 207，即选择所述核心网，并根据相关协议处理相关流程，然后 #行步骤 208; 若没有选择成功，则转入步骤 210。 In step 214, it is determined whether the route reselection message is received in the subsequent process. If yes, step 210 is performed; otherwise, step 209 is executed to end the selection process of the core network operator, and the related process is processed according to the relevant protocol. The fifth embodiment of the present invention provides that when the UE that does not support network sharing performs network attachment or location registration on the shared network, if the RNC confirms that the user identifier in the RRC message is not the IMSI of the user, the RNC randomly selects according to the relevant protocol. a core network operator, and selecting a core network corresponding to the core network operator according to the relevant protocol, and after receiving the route reselection message in the process of selecting the core network, acquiring the user according to the route reselection message IMSI, thus selecting the processes of the core network operators and the core network. The specific implementation process is as shown in FIG. 8 , which is different from the fourth embodiment in the process of step 212 and subsequent steps. The specific description in this embodiment is as follows: Step 212: Determine whether the core network is successfully selected, if selected If yes, step 207 is performed, that is, the core network is selected, and the related process is processed according to the relevant protocol, and then #row step 208; if no selection is successful, then step 210 is performed.

第五实施例比第四实施例运行的速度慢，这是因为其每次均要多运行步骤 204的处理过程。本发明提供的第六实施例，为流程②所述 IDNNS是从 TMSI或者 P-TMSI中导出时，选择核心网运营商及核心网的操作流程，及所选择的核心网发生故障后，根据 NRI选择核心网的方案，如图 9所示，包括如下步骤： The fifth embodiment runs slower than the fourth embodiment because it has to run step 204 more each time. Process. According to the sixth embodiment of the present invention, when the IDNNS is derived from the TMSI or the P-TMSI, the operation flow of the core network operator and the core network is selected, and after the selected core network fails, according to the NRI. The solution for selecting the core network, as shown in Figure 9, includes the following steps:

步骤 1，在确定 IDNNS是从 TMSI或者 P-TMSI中导出情况下，计算出对应的 NRL 步骤 2，所述 RNC判断根据所述 NRI是否能够选择到对应的核心网，若能够，则执行步骤 3; 否则执行步骤 4，判断根据所述 NRI是否能够选择到核心网运营商，若能够选择到核心网运营商，则执行步骤 6，选择所述核心网运营商及核心网，否则执行步骤 5，即根据相关协议处理后续流程。 Step 1: In the case that it is determined that the IDNNS is derived from the TMSI or the P-TMSI, the corresponding NRL is calculated. Step 2, the RNC determines whether the corresponding core network can be selected according to the NRI, and if yes, step 3 is performed. Otherwise, step 4 is performed to determine whether the core network operator can be selected according to whether the NRI can be selected. If the core network operator can be selected, step 6 is performed to select the core network operator and the core network. Otherwise, step 5 is performed. That is, the subsequent process is processed according to the relevant protocol.

步骤 3，判断所选择到的核心网是否故障，若没有故障，则执行步骤 7，即确认所选择的核心网，并按照 3GPP相关协议处理后续流程；否则，转入步骤 8。 Step 3: Determine whether the selected core network is faulty. If there is no fault, perform step 7, confirm the selected core network, and process the subsequent process according to the 3GPP related protocol; otherwise, go to step 8.

步骤 8，判断故障的核心网对应的核心网运营商的所有核心网是否全部故障，若否，则执行步骤 9，即选择所述对应的核心网运营商的运行正常的核心网；在一个位置登记请求、路由区更新请求、附着请求流程中，一个核心网只选择一次。 Step 8: Determine whether all core networks of the core network operators corresponding to the faulty core network are all faulty. If not, perform step 9, that is, select the core network of the corresponding core network operator to operate normally; In the registration request, routing area update request, and attach request process, one core network is selected only once.

若所述核心网运营商的所有核心网全部故障，则按照共享的核心网运营商的优先级级别从高到低的顺序选择没有被选择过的核心网运营商，然后选择所选择的核心网运营商的核心网。具体实施过程如下： If all the core network operators of the core network are all faulty, select the core network operators that have not been selected according to the priority level of the shared core network operators, and then select the selected core network. The core network of the operator. The specific implementation process is as follows:

步骤 10，判断故障的核心网对应的核心网运营商是否与 MOCN组网中的其它核心网运营商存在共享关系，若不存在共享关系，则执行步骤 11，使用原 RNC选择核心网协议，即根据相关协议处理后续的流程；否则，执行步骤 12; Step 10: Determine whether the core network operator corresponding to the faulty core network has a shared relationship with other core network operators in the MOCN network. If there is no sharing relationship, perform step 11 to select the core network protocol by using the original RNC. The subsequent process is processed according to the relevant protocol; otherwise, step 12 is performed;

步骤 12，按照共享的核心网运营商的优先级级别从高到低的顺序选择没有被选择过的核心网运营商，然后选择所选择的核心网运营商的核心网。 Step 12: Select the core network operator that has not been selected according to the priority level of the shared core network operator from high to low, and then select the core network of the selected core network operator.

步骤 12中，如果所有共享的核心网运营商的优先级级别相同，则从共享的核心网运营商随机选择一个，然后选择所选择的核心网运营商的核心网。在一个位置登记请求、路由区更新请求、附着请求流程中，一个共享的核心网运营商只被选择一次。 In step 12, if all the shared core network operators have the same priority level, randomly select one from the shared core network operator, and then select the core network of the selected core network operator. In a location registration request, routing area update request, and attach request procedure, a shared core network operator is selected only once.

步骤 13，判断是否成功选择所选择的核心网运营商的核心网，若成功，则执行步骤 14，即确认所选择的核心网，并按照 3GPP相关协议处理后续流程；否则，执行步骤 15 ; 歩骤 15，判断 MOCN组网中共享的其它核心网运营商是否全部被选择过，若全部被选择过，则执行步骤 16，使用原 RNC选择核心网协议，即根据相关协议处理后续的流程；否则，转入步骤 12。上述描述了 NC根据 NRI选择核心网及核心网运营商的具体实施过程，当 RNC确认选择到对应的核心网后，则根据相关协议把 INITIAL UE MESSAGE (初始 UE消息）消息发送到该核心网。 Step 13: Determine whether the core network of the selected core network operator is successfully selected. If successful, perform step 14 to confirm the selected core network, and process the subsequent process according to the 3GPP related protocol; otherwise, perform step 15; Step 15: Determine whether all other core network operators shared in the MOCN networking are selected. If all are selected, perform step 16 to select the core network protocol by using the original RNC, that is, process the subsequent process according to the relevant protocol; otherwise, , Go to step 12. The foregoing describes the specific implementation process of the NC selecting the core network and the core network operator according to the NRI. After the RNC confirms that the corresponding core network is selected, the INITIAL UE MESSAGE message is sent to the core network according to the relevant protocol.

在实施例六中所述的根据相关协议处理后续流程的操作，即为前面的实施例中根据用户的 IMSI与 RNC中 IMSI号段进行匹配的方法选择核心网运营商及核心网的处理方法，即相应后续的处理过程可以为实施例二或实施例三中的步骤 104及后续的操作，或实施例四或实施例五中步骤 202及后续的操作。且本实施例中核心网故障后的处理方法同样适用于本发明其他各实施例。本发明提供的第七实施例与第六实施例的区别在于，没有步骤 10至步骤 16的过程，以及在 RNC中，不需要设置 NRI对应的一个核心网运营商与 MOCN组网中的其他核心网运营商的共享关系，以及共享的核心网运营商的优先级级别。其余的实施过程如下：首先执行步骤 1至步骤 9的过程，其与第六实施例中的相关描述基本雷同，这里不再详细描述。 The operation of processing the subsequent process according to the relevant protocol in the sixth embodiment, that is, selecting the processing method of the core network operator and the core network according to the method of matching the IMSI of the user with the IMSI number segment in the RNC in the foregoing embodiment, That is, the corresponding subsequent processing may be the step 104 and the subsequent operations in the second embodiment or the third embodiment, or the step 202 and the subsequent operations in the fourth embodiment or the fifth embodiment. Moreover, the processing method after the failure of the core network in this embodiment is also applicable to other embodiments of the present invention. The seventh embodiment of the present invention is different from the sixth embodiment in that there is no process of steps 10 to 16, and in the RNC, it is not necessary to set one core network operator corresponding to the NRI and other cores in the MOCN network. The share relationship of the network operator and the priority level of the shared core network operator. The rest of the implementation process is as follows: First, the processes of steps 1 to 9 are performed, which are basically the same as those in the sixth embodiment, and will not be described in detail here.

然后执行步骤 10，判断故障的核心网对应的核心网运营商的所有核心网是否全部故障，若否，则选择所述对应的核心网运营商的运行正常的核心网；若所述核心网运营商的所有核心网全部故障，则使用原 RNC选择核心网协议。本发明实施例八提供一种选择核心网的***，本实施例所述***包括：无线网络控制器，多个核心网运营商及对应的多个核心网。 Then, step 10 is performed to determine whether all core networks of the core network operator corresponding to the faulty core network are all faulty, and if not, select the core network of the corresponding core network operator to operate normally; if the core network operates If all the core networks of the Provider are faulty, the original RNC is used to select the core network protocol. The eighth embodiment of the present invention provides a system for selecting a core network. The system in this embodiment includes: a wireless network controller, multiple core network operators, and corresponding multiple core networks.

本实施例所述的无线网络控制器 RNC包括： The radio network controller RNC described in this embodiment includes:

存储模块一，用于存储 NRI与核心网运营商的 PLMN ID的对应关系，还用于存储共享的核心网运营商的 PLMN ID间的对应关系； The storage module 1 is configured to store a correspondence between the NRI and the PLMN ID of the core network operator, and is also used to store a correspondence between the PLMN IDs of the shared core network operators.

IDNNS获取解析模块，用于在接收到初始直传消息后获取 IDN S, 并解析确定所述 The IDNNS acquisition parsing module is configured to obtain an IDN S after receiving the initial direct transmission message, and parse and determine the

IDNNS的获取方式； How to get IDNNS;

NRI获取模块，用于在所述 IDN S获取解析模块确定所述 IDNNS从 TMSI或 P-TMSI 中导出时，获取所述 TMSI或 P-TMSI对应的 NRI； An NRI obtaining module, configured to acquire an NRI corresponding to the TMSI or P-TMSI when the IDN S acquisition parsing module determines that the IDNNS is derived from the TMSI or the P-TMSI;

NRI匹配模块，用于把所述 NRI获取模块获取的 NRI，和存储模块一中存储的 NRI 与核心网运营商 PLMN ID对应关系进行匹配，并根据匹配结果选择核心网； The NRI matching module is configured to match the NRI obtained by the NRI acquiring module with the NRI stored in the storage module 1 and the PLMN ID of the core network operator, and select the core network according to the matching result;

IMSI获取模块，用于在所述 IDNNS获取解析模块确定所述 IDNNS从 IMSI中导出时，获取所述 IMSI; An IMSI obtaining module, configured to: when the IDNNS acquisition parsing module determines that the IDNNS is derived from the IMSI, Obtaining the IMSI;

IMSI匹配模块，用于把所述 IMSI获取模块获取的 IMSI，和存储模块二中存储的 IMSI 号段与核心网运营商 PLMN IDX!f应关系进行匹配，并根据匹配结果选择核心网。 The IMSI matching module is configured to match the IMSI acquired by the IMSI obtaining module and the IMSI number segment stored in the storage module 2 with the core network operator PLMN IDX!f, and select the core network according to the matching result.

进一步地，所述无线网络控制器还包括： Further, the radio network controller further includes:

路由重选处理模块，用于在选择核心网过程中接收到路由重选消息时，通知 IMSI 匹配模块根据接收到的路由重选消息选择核心网。 The route reselection processing module is configured to notify the IMSI matching module to select the core network according to the received route reselection message when receiving the route reselection message in the process of selecting the core network.

故障处理模块，用于在当前选择的核心网发生故障后，优先选择与所述故障的核心网对应的核心网运营商中的其它核心网，当所选择的核心网对应的核心网运营商的全部核心网故障时，按照共享的核心网运营商的优先级级别从高到低的顺序选择没有被选择过的核心网运营商，然后选择所选择的核心网运营商的核心网。由本发明的具体实施方案可以看出，本发明对 RNC的核心网运营商选择功能进行了优化，当不支持网络共享特性的 UE进行附着请求或者位置登记请求时，使 RNC选择的核心网运营商更加准确，能够减少一次位置登记或者网络附着流程中 RNC进行核心网运营商重新选择的次数，从而提高了位置登记或者附着的成功率。 The fault processing module is configured to: after the fault of the currently selected core network, preferentially select other core network in the core network operator corresponding to the faulty core network, and select all core network operators corresponding to the core network When the core network is faulty, the core network operators that have not been selected are selected according to the priority level of the shared core network operators from high to low, and then the core network of the selected core network operators is selected. As can be seen from the specific implementation of the present invention, the present invention optimizes the core network operator selection function of the RNC, and enables the core network operator selected by the RNC when the UE that does not support the network sharing feature performs an attach request or a location registration request. More accurate, it can reduce the number of times the RNC performs core network operator reselection in the location registration or network attachment process, thereby improving the success rate of location registration or attachment.

另外，不支持网络共享的用户设备 UE进行网络附着或者位置登记时，所述无线网络控制器 RNC为所述 UE选择对应的核心网；并当所选择的核心网发生故障时，则所述 R C优先选择所述核心网对应的核心网运营商中的其它核心网。因此本发明给出了当 RNC中 NRI对应的核心网故障时，不支持网络共享特性的 UE选择对应的核心网的具体实施方案。 In addition, when the user equipment UE that does not support network sharing performs network attachment or location registration, the radio network controller RNC selects a corresponding core network for the UE; and when the selected core network fails, the RC takes precedence. Select other core networks among the core network operators corresponding to the core network. Therefore, the present invention provides a specific implementation scheme for a UE that does not support the network sharing feature to select a corresponding core network when the core network corresponding to the NRI in the RNC fails.

且当 RNC不能够根据该 NRI选择到核心网时，本发明优先选择所述 NRI能够匹配到核心网运营商的核心网，从而避免了现有技术中通过随机选择的方法，容易导致的用户附着或者位置登记失败的弊端，并且避免了现有技术中由于随机选择核心网运营商导致 RNC的负荷升高，影响 RNC的性能的缺陷。 When the RNC is not able to select the core network according to the NRI, the present invention preferentially selects that the NRI can be matched to the core network operator's core network, thereby avoiding the user's attachment caused by the random selection method in the prior art. Or the disadvantage of location registration failure, and avoiding the defect that the RNC load is increased and the performance of the RNC is affected due to the random selection of the core network operator in the prior art.

以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求的保护范围为准。 The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or within the technical scope disclosed by the present invention. Alternatives are intended to be covered by the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

权利要求 Rights request

1、一种选择核心网的方法，其特征在于，包括： A method for selecting a core network, the method comprising:

当不支持网络共享的用户设备 UE在本共享的网络进行网络附着或者位置登记时，无线网络控制器 RNC获取用户的域内非接入层节点选择参数 IDNNS; When the user equipment UE that does not support network sharing performs network attachment or location registration on the shared network, the radio network controller RNC acquires the in-domain non-access stratum node selection parameter IDNNS of the user;

若所述 IDNNS是从临时移动用户标识 TMSI或分组域临时移动用户标识 P-TMSI导出，则计算出所述 TMSI或 P-TMSI对应的网络资源识别码 NRI, 并根据所述 NRT选择核心网； ' If the IDNNS is derived from the temporary mobile subscriber identity TMSI or the packet domain temporary mobile subscriber identity P-TMSI, the network resource identifier NRI corresponding to the TMSI or the P-TMSI is calculated, and the core network is selected according to the NRT; '

若所述 IDNNS不是从临时移动用户标识 TMSI或分组域临时移动用户标识 P-TMSI 导出，则 RNC获取用户的国际移动用户识别码 IMSI, RNC把所述获得的用户的 IMSI与 RNC中的 IMSI号段进行匹配，当所述用户的 IMSI能够匹配到 IMSI号段时，则优先在所述匹配到的 IMSI号段对应的核心网运营商所对应的核心网中选择核心网。 If the IDNNS is not derived from the Temporary Mobile Subscriber Identity TMSI or the Packet Domain Temporary Mobile Subscriber Identity P-TMSI, the RNC obtains the user's International Mobile Subscriber Identity (IMSI), and the RNC compares the obtained IMSI of the user with the IMSI number of the RNC. The segment is matched. When the IMSI of the user can be matched to the IMSI number segment, the core network is selected in the core network corresponding to the core network operator corresponding to the matched IMSI number segment.

2、根据权利要求 1所述的方法，其特征在于，所述根据 NRI选择核心网的方法具体包括： The method according to claim 1, wherein the method for selecting a core network according to the NRI specifically includes:

根据所述 NRI去匹配对应的核心网，当能够匹配到对应的核心网时，则选择所述核心网； Selecting the core network according to the NRI, and selecting the core network when the corresponding core network can be matched;

当不能够根据所述 NRI匹配到对应的核心网时，则根据所述 NRI去匹配对应的核心网运营商，然后再选择所匹配到的核心网运营商的核心网。 When the NRI is not matched to the corresponding core network, the corresponding core network operator is matched according to the NRI, and then the core network of the matched core network operator is selected.

3、根据权利要求 2所述的方法，其特征在于，进一步包括：预先建立 NRI与核心网运营商的共用陆地移动网标识 PLMN ID的对应关系。 The method according to claim 2, further comprising: pre-establishing a correspondence between the NRI and the shared land mobile network identifier PLMN ID of the core network operator.

4、根据权利要求 1所述的方法，其特征在于，所述 RNC获取用户 IMSI的方法具体包括： The method according to claim 1, wherein the method for the RNC to acquire the user IMSI specifically includes:

RNC根据无线资源控制 RRC消息获取用户的 IMSI; 或， The RNC acquires the user's IMSI according to the radio resource control RRC message; or,

如果 RNC确认 RRC消息中的用户标识不是用户的 IMSI，则根据相关协议随机选择一个核心网运营商，并根据相关协议选择所述核心网运营商对应的核心网，当选择的核心网在附或位置登记流程中发送 commond id消息或者路由重选消息给 RNC,则 RNC根据所述消息中获取到用户的 IMSI。 If the RNC confirms that the user identifier in the RRC message is not the IMSI of the user, randomly selects a core network operator according to the relevant protocol, and selects a core network corresponding to the core network operator according to the relevant protocol, when the selected core network is attached or In the location registration process, a commond id message or a route reselection message is sent to the RNC, and the RNC obtains the IMSI of the user according to the message.

5、根据权利要求 4所述的方法，其特征在于，所述当所述用户的 IMSI能够匹配到 IMSI号段时，则优先在所述匹配到的 IMSI号段对应的核心网运营商所对应的核心网中核心网方法具体包括： The method according to claim 4, wherein when the IMSI of the user can match the IMSI number segment, the core network operator corresponding to the matched IMSI number segment is preferentially corresponding. The core network method in the core network specifically includes:

当确认所述用户的 IMSI能够匹配到 IMSI号段时，依次在用户的 MSI匹配到的 IMSI 号段对应的核心网运营商中按照优先级从髙到低的先后顺序选择选择一个未被选择过的核心网运营商，并根据相关协议选择所述核心网运营商所对应的核心网。 When it is confirmed that the IMSI of the user can match the IMSI number segment, the IMSI matched to the MSI of the user in turn The core network operators corresponding to the segments select one of the core network operators that have not been selected according to the order of priority from lowest to lowest, and select the core network corresponding to the core network operator according to the relevant protocol.

6、根据权利要求 5所述的方法，其特征在于，所述当所述用户的 MSI能够匹配到 IMSI号段时，则优先在所述匹配到的 IMSI号段对应的核心网运营商所对应的核心网中核心网方法还包括： The method according to claim 5, wherein when the MSI of the user can match the IMSI number segment, the core network operator corresponding to the matched IMSI number segment is preferentially corresponding. The core network method in the core network also includes:

B1、如果在根据相关协议选择所述核心网运营商对应的核心网的流程中是接收到路由重选消息，则判断匹配到的 IMSI号段对应的核心网运营商是否全部选择过，若全部选择过，则在未匹配到的所有没有被选择过的核心网运营商中，按照其优先级从高到低的先后顺序选择核心网运营商，并根据相关协议选择所述核心网运营商对应的核心网；否贝 1J，执行步骤 B2; B1. If the route reselection message is received in the process of selecting the core network corresponding to the core network operator according to the relevant protocol, it is determined whether the core network operators corresponding to the matched IMSI number segment have all selected, if all If the network network operator that has not been selected is selected, the core network operator is selected according to the priority from high to low, and the core network operator is selected according to the relevant protocol. Core network; No Bay 1J, perform step B2;

B2、在没有被选择过的匹配到的 IMSI号段对应的核心网运营商中，按照其优先级从高到低的先后顺序选择核心网运营商，并根据相关协议选择所述核心网运营商对应的核心网。 . B2: The core network operator corresponding to the matched IMSI number segment that has not been selected, selects the core network operator according to the priority from high to low, and selects the core network operator according to the relevant protocol. Corresponding core network. .

7、根据权利要求 1所述的方法，其特征在于，进一步包括，当所选择的核心网发生故障时，所述 R C优先选择与所述故障的核心网对应的核心网运营商中的其它核心网。 The method according to claim 1, further comprising: when the selected core network fails, the RC preferentially selects other core networks of the core network operators corresponding to the faulty core network. .

8、根据权利要求 7所述的方法，其特征在于，进一步包括： 8. The method according to claim 7, further comprising:

当所选择的核心网对应的核心网运营商的全部核心网故障时，按照共享的核心网运营商的优先级级别从高到低的顺序选择没有被选择过的核心网运营商，然后选择所选择的核心网运营商的核心网。 When all the core network operators of the core network operators corresponding to the selected core network are faulty, select the core network operators that have not been selected according to the priority level of the shared core network operators, and then select the selected network operators. The core network of the core network operator.

9、根据权利要求 8所述的方法，其特征在于，进一步包括：预先建立共享的核心网运营商的 PLMN ID间的对应关系。 The method according to claim 8, further comprising: pre-establishing a correspondence between PLMN IDs of the shared core network operators.

10、根据权利要求 1所述的方法，其特征在于，之前进一步包括： 10. The method according to claim 1, wherein the method further comprises:

预先建立用户的 IMSI号段与核心网运营商 PLMN ID的对应关系。 The correspondence between the IMSI number segment of the user and the core network operator PLMN ID is established in advance.

11、一种无线网络控制器，其特征在于，包括： 11. A radio network controller, comprising:

NRI获取模块，用于在所述 IDNNS获取解析模块确定所述 IDNNS从 TMSI或 P-TMSI 中导出时，获取所述 TMSI或 P-TMSI对应的 NRI; NRI匹配模块，用于把所述 NRI获取模块获取的 NRI，和存储模块一中存储的 NRI 与核心网运营商 PLMN ID对应关系进行匹配，并根据匹配结果选择核心网； An NRI obtaining module, configured to acquire an NRI corresponding to the TMSI or P-TMSI when the IDNNS acquisition parsing module determines that the IDNNS is derived from a TMSI or a P-TMSI; An NRI matching module, configured to match an NRI obtained by the NRI acquiring module, and an NRI stored in the storage module 1 and a core network operator PLMN ID, and select a core network according to the matching result;

IMSI获取模块，用于在所述 IDN S获取解析模块确定所述 IDNNS从 IMSI中导出吋，获取所述 IMSI; An IMSI obtaining module, configured to: after the IDN S acquisition parsing module determines that the IDNNS is exported from the IMSI, acquiring the IMSI;

IMSI匹配模块，用于把所述 IMSI获取模块获取的 IMSI，和存储模块二中存储的 IMSI 号段与核心网运营商 PLMN ID对应关系进行匹配，并根据匹配结果选择核心网。 The IMSI matching module is configured to match the IMSI acquired by the IMSI obtaining module and the IMSI number segment stored in the storage module 2 with the core network operator PLMN ID, and select the core network according to the matching result.

12、如权利要求 11所述的无线网络控制器，其特征在于，还包括： The radio network controller according to claim 11, further comprising:

13、如权利要求 12所述的无线网络控制器，其特征在于，进一步包括： The radio network controller according to claim 12, further comprising:

存储模块一，还用于存储共享的核心网运营商的 PLMN ID间的对应关系；故障处理模块，用于在当前选择的核心网发生故障后，优先选择与所述故障的核心网对应的核心网运营商中的其它核心网，当所选择的核心网对应的核心网运营商的全部核心网故障时，按照共享的核心网运营商的优先级级别从高到低的顺序选择没有被选择过的核心网运营商，然后选择所选择的核心网运营商的核心网。 The storage module 1 is further configured to store a correspondence between the PLMN IDs of the shared core network operators. The fault processing module is configured to preferentially select a core corresponding to the faulty core network after the currently selected core network fails. Other core networks in the network operator, when all the core network operators of the core network operators corresponding to the selected core network are faulty, select the unselected ones according to the priority level of the shared core network operators from high to low. The core network operator then selects the core network of the selected core network operator.

14、一种选择核心网的***，其特征在于，包括：无线网络控制器、多个核心网运营商及对应的多个核心网； 14. A system for selecting a core network, the method comprising: a wireless network controller, a plurality of core network operators, and a corresponding plurality of core networks;

IDNNS获取解析模块，用于在接收到初始直传消息后获取 IDNNS, 并解析确定所述 IDNNS的获取方式； The IDNNS acquisition parsing module is configured to obtain an IDNNS after receiving the initial direct transmission message, and parse and determine the acquisition manner of the IDNNS;

NRI获取模块，用于在所述 IDNNS获取解析模块确定所述 ID S从 TMSI或 P-TMSI 中导出时，获取所述 TMSI或 P-TMSI对应的 NRI； An NRI obtaining module, configured to acquire an NRI corresponding to the TMSI or P-TMSI when the IDNNS acquisition parsing module determines that the ID S is derived from the TMSI or the P-TMSI;

NRI匹配模块，用于把所述 NRI获取模块获取的 NRI, 和存储模块一中存储的 NRI 与核心网运营商 PLMN ID对应关系进行匹配，并根据匹配结果选择核心网； The NRI matching module is configured to match the NRI obtained by the NRI acquiring module with the NRI stored in the storage module 1 and the PLMN ID of the core network operator, and select the core network according to the matching result;

IMSI匹配模块，用于把所述 IMSI获取模块获取的 IMSI,和存储模块二中存储的 IMSI 号段与核心网运营商 PLMN ID对应关系进行匹配，并根据匹配结果选择核心网。 The IMSI matching module is configured to match the IMSI acquired by the IMSI obtaining module and the IMSI number segment stored in the storage module 2 with the core network operator PLMN ID, and select the core network according to the matching result.