WO2014019521A1 - Method and device for selecting nas node - Google Patents

Method and device for selecting nas node Download PDF

Info

Publication number
WO2014019521A1
WO2014019521A1 PCT/CN2013/080569 CN2013080569W WO2014019521A1 WO 2014019521 A1 WO2014019521 A1 WO 2014019521A1 CN 2013080569 W CN2013080569 W CN 2013080569W WO 2014019521 A1 WO2014019521 A1 WO 2014019521A1
Authority
WO
WIPO (PCT)
Prior art keywords
enodeb
nas node
mme
rrc connection
access
Prior art date
Application number
PCT/CN2013/080569
Other languages
French (fr)
Chinese (zh)
Inventor
孙伟
张�荣
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2014019521A1 publication Critical patent/WO2014019521A1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Definitions

  • the present invention relates to the field of communications, and in particular to a method and apparatus for selecting an NSA (Non-Access-Stratume) node.
  • an eNodeB In an E-UTRAN (Evolved Universal Terrestrial Radio Access Network), an eNodeB needs to select a NAS node, that is, an access MME (Mobility Management Entity, mobile) for a UE requesting access to the network. Sexual management entity).
  • the eNodeB may support multiple PLMNs (Public Land Mobile Network), and multiple PLMNs may be delivered in the cell system broadcast.
  • PLMNs Public Land Mobile Network
  • the eNodeB may be sent in the cell broadcast.
  • the embodiments of the present invention provide a method and an apparatus for selecting an NSA node, so as to solve at least the problem of how to select a NAS node for a UE when the UE selects eNodeB support, but the PLMN does not support the MME.
  • a method for selecting an NSA node including: the eNodeB selects a NAS node for the UE according to the PLMN selected by the UE access; if the NAS node fails to select, the ij eNodeB is based on the UE in the RRC (Radio Resource Control)
  • the RRC connection request message or the information carried in the RRC connection setup complete message specifies a NAS node for the UE; or the eNodeB specifies a NAS node for the UE according to the local policy.
  • the NAS node is a mobility management entity MME.
  • the method further includes: selecting, by the UE, one PLMN from the plurality of PLMNs sent by the broadcast system information to initiate an access call.
  • the eNodeB specifies a NAS node for the UE according to the information carried in the RRC connection setup request message or the RRC connection setup complete message of the UE; or the eNodeB specifies a NAS node for the UE according to the local policy, including: the eNodeB establishes the UE in the RRC connection.
  • the registration MME carried in the request message or the RRC connection setup complete message is designated as the access MME of the UE; or the eNodeB specifies an access MME for the UE according to the local policy.
  • the type of access call is an emergency call.
  • an apparatus for selecting an NSA node is provided on the eNodeB side, including: a selection module, configured to select a NAS node for the UE according to the PLMN selected by the UE access; and a designated module, configured to be in the NAS node If the selection fails, the UE designates a NAS node according to the information carried in the RRC connection setup request message or the RRC connection setup complete message, or specifies a NAS node for the UE according to the local policy.
  • the NAS node is a mobility management entity MME.
  • the specifying module includes: a first designated sub-module, configured to designate the registration MME carried in the RRC connection setup request message or the RRC connection setup complete message of the UE as the access MME of the UE; the second designated sub-module is set to The UE is assigned an access MME according to the local policy.
  • the apparatus further comprises: a judging module, configured to determine whether the type of the access call is an emergency call if the selection module fails to be selected, and if yes, invoke the designated module.
  • a NAS node is specified for the UE according to the information carried in the RRC connection setup request message or the RRC connection setup complete message, or the eNodeB specifies a NAS node according to the local policy, thereby solving the UE selection.
  • the eNodeB supports, but when the PLMN is not supported by the MME, how to select the NAS node for the UE, thereby achieving the effect of improving the success rate of the UE access.
  • FIG. 1 is a flow chart of an NSA node selection method according to an embodiment of the present invention
  • FIG. 2 is a block diagram of an NSA node selection apparatus according to an embodiment of the present invention
  • FIG. 3 is an NSA node selection according to Embodiment 1 of the present invention
  • FIG. 4 is a flowchart of a method for selecting an NSA node according to Embodiment 2 of the present invention
  • FIG. 1 is a flow chart of an NSA node selection method according to an embodiment of the present invention
  • FIG. 2 is a block diagram of an NSA node selection apparatus according to an embodiment of the present invention
  • FIG. 3 is an NSA node selection according to Embodiment 1 of the present invention
  • FIG. 4 is a flowchart of a method for selecting an NSA node according to Embodiment 2 of the present invention
  • Step S102 The eNodeB selects a NAS node for the UE according to the PLMN selected by the UE access.
  • Step S104 If the NAS node fails to select, the eNodeB specifies a NAS node according to the information carried in the RRC connection setup request message or the RRC connection setup complete message, or the eNodeB specifies a NAS node according to the local policy.
  • the UE is designated by the NAS according to the information carried in the RRC connection setup request message or the RRC connection setup complete message, or the eNodeB specifies a NAS node according to the local policy, thereby solving the UE selection.
  • the eNodeB supports, but when the PLMN is not supported by the MME, how to select the NAS node for the UE, thereby achieving the effect of improving the success rate of the UE access.
  • the eNodeB selects the MME for the UE.
  • the eNodeB determines whether the access type of the UE is an emergency call. If it is an emergency call, the eNodeB determines whether the MME supports the UE selected PLMN or not according to the UE in the RRC connection establishment request (RRC Connection).
  • RRC Connection The registration MME information carried in the RRC Connection Setup Request Complete message or the MME is selected according to the local policy to select an MME for access.
  • FIG. 2 is a block diagram showing the structure of an NSA node selection apparatus according to an embodiment of the present invention.
  • the selection device is located on the eNodeB side, as shown in FIG.
  • a selection module 10 configured to select a NAS node for the UE according to the PLMN selected by the UE access; and a setting module 20, configured to: if the NAS node fails to be selected, according to The information carried by the UE in the RRC Connection Setup Request message or the RRC Connection Setup Complete message specifies a NAS node for the UE; or specifies a NAS node for the UE according to the local policy.
  • the selection module 10 and the specification module 20 are coupled.
  • the UE is designated by the NAS according to the information carried in the RRC connection setup request message or the RRC connection setup complete message, or the eNodeB specifies a NAS node according to the local policy, thereby solving the UE selection.
  • the eNodeB supports, but when the PLMN is not supported by the MME, how to select the NAS node for the UE, thereby achieving the effect of improving the success rate of the UE access.
  • the NAS node is a mobility management entity MME. Wherein, if all MMEs connected to the eNodeB do not support the PLMN, or the MME supporting the PLMN and the eNodeB are in a disconnected state, it is determined that the NAS node selection fails.
  • the specifying module 20 further includes: a first specifying sub-module 22, configured to designate the registration MME carried in the RRC connection setup request message or the RRC connection setup complete message of the UE as the access MME of the UE; the second designated sub-module 24 , set to specify an access MME for the UE according to the local policy.
  • the selection device further includes: a judging module 30, configured to determine whether the type of the access call is an emergency call if the selection module 10 fails to select, and if so, invoke the designation module 20.
  • FIG. 3 is a flowchart of an NSA node selection method according to Embodiment 1 of the present invention. As shown in FIG.
  • Step S302 The UE receives the broadcast system information, and selects the PLMN3 to initiate the emergency call type access from the PLMNs sent by the system information, where the system may send multiple PLMNs. For example, PLMN1, PLMN2, PLMN3.
  • Step S304 the eNodeB selects an MME for the UE according to the PLMN3 selected by the UE. In step S306, since all MMEs connected by the eNodeB do not support the PLMN3, the eNodeB does not select the MME that supports the UE to select the PLMN, and the eNodeB determines whether the UE is an emergency call type access UE.
  • the eNodeB determines whether the RRC connection establishment request message is The S-TMSI (SAE Temporary Mobile Subscriber Identity; SAE: System Architecture Evolution, SAE: System Architecture Evolution) is carried. If carried, the eNodeB selects an MME for the UE according to the information of the S-TMSI. If not carried, the eNodeB determines whether the RRC connection setup complete message carries the Registered MME (registered MME) information. If carried, the eNodeB selects an MME for the UE according to the Registered MME information. If not carried, the eNodeB selects the MME for the UE according to the local policy.
  • S-TMSI SAE Temporary Mobile Subscriber Identity
  • SAE System Architecture Evolution
  • Step S308, the eNodeB and the selected MME continue to perform the access procedure of the UE.
  • 4 is a flowchart of an NSA node selection method according to Embodiment 2 of the present invention. As shown in FIG. 4, the method includes the following steps: Step S402: The UE receives the broadcast system information, and selects the PLMN3 from the PLMN that is sent by the system information to initiate an emergency call type access, where the system may send multiple PLMNs. For example, PLMN1, PLMN2, PLMN3. Step S404, the eNodeB selects an MME for the UE according to the PLMN information selected by the UE.
  • Step S406 the eNodeB cannot select the MME for the UE because the MME supporting the PLMN3 is disconnected from the eNodeB. At this time, the eNodeB does not select the MME that supports the UE to select the PLMN, and the eNodeB determines whether the UE is the UE that the emergency call type accesses. If yes, the eNodeB determines whether the RRC connection setup request message carries the S-TMSI (SAE Temporary Mobile Subscriber Identity, SAE Temporary Mobile Subscriber Identity; SAE: System Architecture Evolution, if carried, the eNodeB selects an MME for the UE based on the S-TMSI information.
  • S-TMSI SAE Temporary Mobile Subscriber Identity, SAE Temporary Mobile Subscriber Identity; SAE: System Architecture Evolution
  • the eNodeB determines whether the RRC connection setup complete message carries the Registered MME (registered MME) information. If carried, the eNodeB selects an MME for the UE according to the Registered MME information. If not carried, the eNodeB selects the MME for the UE according to the local policy. Step S408, the eNodeB and the selected MME continue to perform the access process of the UE.
  • FIG. 5 is a flowchart of an NSA node selection method according to Embodiment 3 of the present invention.
  • Step S502 the Ue receives the broadcast system information, selects a PLMN from the PLMN issued by the system information to initiate an emergency call type access step S504, and the eNodeB selects the MME for the UE according to the PLMN information selected by the UE.
  • Step S506 if the eNodeB does not select support The UE selects the MME of the PLMN, and the eNodeB determines whether the UE is an UE that is accessed by the emergency call type. If yes, the eNodeB selects an MME access for the UE according to the load balancing principle.
  • Step S508 the eNodeB and the selected MME continue to perform the access process of the UE.
  • a software for selecting an NSA node for performing the technical solution described in the above embodiments is also provided.
  • a storage medium is also provided, the software being stored, including but not limited to an optical disk, a floppy disk, a hard disk, a rewritable memory, and the like.
  • the UE is designated with one NAS node according to the information carried in the RRC connection setup request message or the RRC connection setup complete message, or the eNodeB specifies a NAS node according to the local policy, so that the UE is in the UE.
  • the eNodeB can also select the NAS to the emergency call UE, thereby achieving the effect of improving the UE access success rate.
  • the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Provided are a method and device for selecting an NAS node. The method includes: according to a PLMN which a UE selects to access, an eNodeB selecting an NAS node for the UE; if the NAS node selection has failed, the eNodeB designating an NAS node for the UE according to the information carried by the UE in an RRC connection setup request message or RRC connection setup completion message; or the eNodeB designating an NAS node for the UE according to a local policy. In the present invention, by designating an NAS node for a UE according to the information carried by the UE in an RRC connection setup request message or RRC connection setup completion message, or designating an NAS node for the UE by an eNodeB according to a local policy, the success rate of UE access is improved.

Description

NSA节点的选择方法及装置 技术领域 本发明涉及通信领域， 具体而言， 涉及一种 NSA (Non- Access-Stratum, 非接入 层） 节点的选择方法及装置。 背景技术 在 E-UTRAN (Evolved - Universal Terrestrial Radio Access Network, 演进的通用陆 地无线接入网络） 中， eNodeB需要为请求接入网络的 UE选择 NAS节点， 即接入的 MME (Mobility Management Entity, 移动性管理实体）。 网络共享环境下， eNodeB可能支持多个 PLMN (Public Land Mobile Network, 公 共陆地移动网络）， 小区系统广播中也可能下发多个 PLMN。 当 eNodeB下所有小区支 持的 PLMN集合与所有和 eNodeB有连接的 MME所支持的 Served PLMN集合不相同， 或者和 eNodeB连接的部分 MME与 eNodeB连接断开， 则可能会出现 eNodeB在小区 广播中下发 eNodeB支持但是其连接的 MME不支持的 PLMN， 如果 UE选择了这些 PLMN接入， 贝 U eNodeB为 UE选择 NAS节点时将会失败， 找不到能支持该 PLMN的 MME, 接入失败。 针对相关技术中在 UE选择了 eNodeB支持，但是 MME不支持的 PLMN接入时， 如何为 UE选择 NAS节点的问题， 目前尚未提出有效的解决方案。 发明内容 本发明实施例提供了一种 NSA节点的选择方法及装置， 以至少解决上述在 UE选 择了 eNodeB支持， 但是 MME不支持的 PLMN接入时， 如何为 UE选择 NAS节点的 问题。 根据本发明的一个方面， 提供了一种 NSA节点的选择方法， 包括： eNodeB根据 UE接入选择的 PLMN为 UE选择 NAS节点； 如果 NAS节点选择失败， 贝 ij eNodeB根 据 UE在 RRC (Radio Resource Control,无线资源控制协议）连接建立请求消息或 RRC 连接建立完成消息中携带的信息为 UE指定一个 NAS节点； 或者 eNodeB根据本地策 略为 UE指定一个 NAS节点。 优选地， NAS节点为移动性管理实体 MME。 优选地， 如果与 eNodeB连接的所有 MME都不支持 PLMN， 或者支持 PLMN的 MME与 eNodeB处于连接断开状态， 则确定为 NAS节点选择失败。 优选地， eNodeB根据 UE接入选择的 PLMN信息为 UE选择 NAS节点之前， 还 包括： UE从广播系统信息下发的多个 PLMN中选择一个 PLMN发起接入呼叫。 优选地， eNodeB根据 UE在 RRC连接建立请求消息或 RRC连接建立完成消息中 携带的信息为 UE指定一个 NAS节点；或者 eNodeB根据本地策略为 UE指定一个 NAS 节点， 包括： eNodeB将 UE在 RRC连接建立请求消息或 RRC连接建立完成消息中携 带的注册 MME指定为 UE的接入 MME; 或者 eNodeB根据本地策略为 UE指定一个 接入 MME。 优选地， 接入呼叫的类型为紧急呼叫。 根据本发明的另一方面， 提供了一种 NSA节点的选择装置， 位于 eNodeB侧， 包 括： 选择模块， 设置为根据 UE接入选择的 PLMN为 UE选择 NAS节点； 指定模块， 设置为在 NAS节点选择失败的情况下，根据 UE在 RRC连接建立请求消息或 RRC连 接建立完成消息中携带的信息为 UE指定一个 NAS节点； 或者根据本地策略为 UE指 定一个 NAS节点。 优选地， NAS节点为移动性管理实体 MME。 优选地， 如果与 eNodeB连接的所有 MME都不支持 PLMN， 或者支持 PLMN的 MME与 eNodeB处于连接断开状态， 则确定为 NAS节点选择失败。 优选地， 指定模块包括： 第一指定子模块， 设置为将 UE在 RRC连接建立请求消 息或 RRC连接建立完成消息中携带的注册 MME指定为 UE的接入 MME; 第二指定 子模块， 设置为根据本地策略为 UE指定一个接入 MME。 优选地， 该装置还包括： 判断模块， 设置为在选择模块选择失败的情况下， 判断 接入呼叫的类型是否为紧急呼叫， 如果是， 则调用指定模块。 通过本发明实施例， 采用根据 UE在 RRC连接建立请求消息或 RRC连接建立完 成消息中携带的信息为 UE指定一个 NAS节点； 或者 eNodeB根据本地策略为 UE指 定一个 NAS节点，从而解决了在 UE选择了 eNodeB支持，但是 MME不支持的 PLMN 接入时，如何为 UE选择 NAS节点的问题，进而达到了提高 UE接入的成功率的效果。 附图说明 此处所说明的附图用来提供对本发明的进一步理解， 构成本申请的一部分， 本发 明的示意性实施例及其说明用于解释本发明， 并不构成对本发明的不当限定。 在附图 中- 图 1是根据本发明实施例的 NSA节点选择方法流程图； 图 2是根据本发明实施例的 NSA节点选择装置结构框图； 图 3是根据本发明实施例一的 NSA节点选择方法流程图； 图 4是根据本发明实施例二的 NSA节点选择方法流程图； 以及 图 5是根据本发明实施例三的 NSA节点选择方法流程图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是， 在不冲突的 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。 图 1是根据本发明实施例的 NSA节点选择方法流程图。如图 1所示，包括以下步 骤： 步骤 S 102， eNodeB根据 UE接入选择的 PLMN为 UE选择 NAS节点。 步骤 S104， 如果 NAS节点选择失败， 则 eNodeB根据 UE在 RRC连接建立请求 消息或 RRC连接建立完成消息中携带的信息为 UE指定一个 NAS节点；或者 eNodeB 根据本地策略为 UE指定一个 NAS节点。 在本实施例中， 通过根据 UE在 RRC连接建立请求消息或 RRC连接建立完成消 息中携带的信息为 UE指定一个 NAS节点； 或者 eNodeB根据本地策略为 UE指定一 个 NAS节点， 从而解决了在 UE选择了 eNodeB支持， 但是 MME不支持的 PLMN接 入时， 如何为 UE选择 NAS节点的问题， 进而达到了提高 UE接入的成功率的效果。 其中，在上述步骤 S102中， 当紧急呼叫的 UE接入时， eNodeB为 UE选择 MME。 其中， 在上述步骤 S104中， 如果 eNodeB找不到能够支持 UE所选择 PLMN的 MME。则 eNodeB判断 UE的接入类型是否是紧急呼叫。如果是紧急呼叫， 则 eNodeB 不管 MME是否支持 UE选择的 PLMN，根据 UE在 RRC连接建立请求（RRC Connection Setup Request)或 RRC连接建立完成 （RRC Connection Setup Request Complete) 消息 中携带的注册 MME信息或者根据本地策略为 UE选择一个 MME做接入。 这样即使 UE选择的 PLMN在核心网不支持， eNodeB也可以为紧急呼叫的 UE选 择到 NAS节点， 提高 UE接入成功率。 图 2是根据本发明实施例的 NSA节点选择装置结构框图。该选择装置位于 eNodeB 侧， 如图 2所示， 包括： 选择模块 10， 设置为根据 UE接入选择的 PLMN为 UE选择 NAS节点； 指定模块 20， 设置为在 NAS节点选择失败的情况下， 根据 UE在 RRC连 接建立请求消息或 RRC连接建立完成消息中携带的信息为 UE指定一个 NAS节点； 或者根据本地策略为 UE指定一个 NAS节点。其中， 选择模块 10和指定模块 20相耦 合。 在本实施例中， 通过根据 UE在 RRC连接建立请求消息或 RRC连接建立完成消 息中携带的信息为 UE指定一个 NAS节点； 或者 eNodeB根据本地策略为 UE指定一 个 NAS节点， 从而解决了在 UE选择了 eNodeB支持， 但是 MME不支持的 PLMN接 入时， 如何为 UE选择 NAS节点的问题， 进而达到了提高 UE接入的成功率的效果。 其中， NAS节点为移动性管理实体 MME。 其中， 如果与 eNodeB连接的所有 MME都不支持 PLMN， 或者支持 PLMN的 MME与 eNodeB处于连接断开状态， 则确定 NAS节点选择失败。 其中， 指定模块 20还包括： 第一指定子模块 22， 设置为将 UE在 RRC连接建立 请求消息或 RRC连接建立完成消息中携带的注册 MME指定为 UE的接入 MME; 第 二指定子模块 24， 设置为根据本地策略为 UE指定一个接入 MME。 其中， 该选择装置还包括： 判断模块 30， 设置为在选择模块 10选择失败的情况 下， 判断接入呼叫的类型是否为紧急呼叫， 如果是， 则调用指定模块 20。 图 3是根据本发明实施例一的 NSA节点选择方法流程图。如图 3所示，包括以下 步骤： 步骤 S302， UE收到广播系统信息， 从系统信息下发的 PLMN中选择 PLMN3发 起紧急呼叫类型接入，此处系统信息下发的 PLMN可以有多个，例如， PLMN1、PLMN2、 PLMN3。 步骤 S304， eNodeB根据 UE选择的 PLMN3为 UE选择 MME。 步骤 S306， 由于 eNodeB连接的所有 MME都不支持 PLMN3， eNodeB选择不到 支持 UE选择 PLMN的 MME， eNodeB判断 UE是否是紧急呼叫类型接入的 UE， 如 果是， 那么 eNodeB判断 RRC连接建立请求消息是否携带了 S-TMSI ( SAE Temporary Mobile Subscriber Identity, SAE 临时移动签约用户标识； SAE: System Architecture Evolution, 系统构架演技）， 如果携带了， 那么 eNodeB根据 S-TMSI的信息为 UE选 择一个 MME。 如果没有携带， 那么 eNodeB判断 RRC连接建立完成消息中是否携带 了 RegisteredMME (注册 MME)信息，如果携带了，那么 eNodeB根据 RegisteredMME 信息为 UE选择一个 MME。 如果没有携带， 那么 eNodeB根据本地策略为 UE选择 MME。 步骤 S308， eNodeB与选定的 MME继续执行 UE的接入过程。 图 4是根据本发明实施例二的 NSA节点选择方法流程图。如图 4所示，包括以下 步骤： 步骤 S402， UE收到广播系统信息， 从系统信息下发的 PLMN中选择 PLMN3发 起紧急呼叫类型接入，此处系统信息下发的 PLMN可以有多个，例如， PLMN1、PLMN2、 PLMN3。 步骤 S404， eNodeB根据 UE选择的 PLMN信息为 UE选择 MME。 步骤 S406， 由于支持 PLMN3的 MME与 eNodeB连接断开， eNodeB无法为 UE 选择该 MME。 此时 eNodeB选择不到支持 UE选择 PLMN的 MME， eNodeB判断 UE 是否是紧急呼叫类型接入的 UE， 如果是， 那么 eNodeB判断 RRC连接建立请求消息 是否携带了 S-TMSI ( SAE Temporary Mobile Subscriber Identity, SAE临时移动签约用 户标识； SAE: System Architecture Evolution,系统构架演技），如果携带了，那么 eNodeB 根据 S-TMSI的信息为 UE选择一个 MME。如果没有携带，那么 eNodeB判断 RRC连 接建立完成消息中是否携带了 RegisteredMME (注册 MME)信息， 如果携带了， 那么 eNodeB根据 RegisteredMME信息为 UE选择一个 MME。如果没有携带，那么 eNodeB 根据本地策略为 UE选择 MME。 步骤 S408， eNodeB与选定的 MME继续执行 UE的接入过程。 图 5是根据本发明实施例三的 NSA节点选择方法流程图。如图 5所示，包括以下 步骤： 步骤 S502， Ue收到广播系统信息， 从系统信息下发的 PLMN中选择一个 PLMN 发起紧急呼叫类型接入 步骤 S504， eNodeB根据 UE选择的 PLMN信息为 UE选择 MME 步骤 S506， 如果 eNodeB选择不到支持 UE选择 PLMN的 MME， eNodeB判断 UE是否是紧急呼叫类型接入的 UE， 如果是， 那么 eNodeB根据负载均衡原则为 UE 选择一个 MME接入。 步骤 S508， eNodeB与选定的 MME继续执行 UE的接入过程。 在另外一个实施例中，还提供了一种用于选择 NSA节点的软件， 该软件用于执行 上述实施例中描述的技术方案。 在另外一个实施例中， 还提供了一种存储介质， 该存储介质中存储有上述软件， 该存储介质包括但不限于光盘、 软盘、 硬盘、 可擦写存储器等。 在本发明的上述各实施例中， 根据 UE在 RRC连接建立请求消息或 RRC连接建 立完成消息中携带的信息为 UE指定一个 NAS节点；或者 eNodeB根据本地策略为 UE 指定一个 NAS节点， 使得在 UE选择的 PLMN在核心网不支持的情况下， eNodeB也 可以为紧急呼叫的 UE选择到 NAS节点， 从而达到提高 UE接入成功率的效果。 显然， 本领域的技术人员应该明白， 上述的本发明的各模块或各步骤可以用通用 的计算装置来实现， 它们可以集中在单个的计算装置上， 或者分布在多个计算装置所 组成的网络上， 可选地， 它们可以用计算装置可执行的程序代码来实现， 从而， 可以 将它们存储在存储装置中由计算装置来执行， 并且在某些情况下， 可以以不同于此处 的顺序执行所示出或描述的步骤， 或者将它们分别制作成各个集成电路模块， 或者将 它们中的多个模块或步骤制作成单个集成电路模块来实现。 这样， 本发明不限制于任 何特定的硬件和软件结合。 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。 TECHNICAL FIELD The present invention relates to the field of communications, and in particular to a method and apparatus for selecting an NSA (Non-Access-Stratume) node. In an E-UTRAN (Evolved Universal Terrestrial Radio Access Network), an eNodeB needs to select a NAS node, that is, an access MME (Mobility Management Entity, mobile) for a UE requesting access to the network. Sexual management entity). In the network sharing environment, the eNodeB may support multiple PLMNs (Public Land Mobile Network), and multiple PLMNs may be delivered in the cell system broadcast. When the PLMN set supported by all the cells in the eNodeB is different from the Served PLMN set supported by the MMEs connected to the eNodeB, or the eNodeB is disconnected from the eNodeB, the eNodeB may be sent in the cell broadcast. The PLMN that the eNodeB supports but the MME that the connected MME does not support, if the UE selects these PLMN accesses, the Bay U eNodeB will fail to select the NAS node for the UE, and the MME that can support the PLMN cannot be found, and the access fails. For the problem of how to select a NAS node for the UE when the UE selects the eNodeB support but the PLMN does not support the MME, the effective solution has not been proposed yet. SUMMARY OF THE INVENTION The embodiments of the present invention provide a method and an apparatus for selecting an NSA node, so as to solve at least the problem of how to select a NAS node for a UE when the UE selects eNodeB support, but the PLMN does not support the MME. According to an aspect of the present invention, a method for selecting an NSA node is provided, including: the eNodeB selects a NAS node for the UE according to the PLMN selected by the UE access; if the NAS node fails to select, the ij eNodeB is based on the UE in the RRC (Radio Resource Control) The RRC connection request message or the information carried in the RRC connection setup complete message specifies a NAS node for the UE; or the eNodeB specifies a NAS node for the UE according to the local policy. Preferably, the NAS node is a mobility management entity MME. Preferably, if all MMEs connected to the eNodeB do not support the PLMN, or the MME supporting the PLMN and the eNodeB are in a disconnected state, it is determined that the NAS node selection fails. Preferably, before the eNodeB selects the NAS node for the UE according to the PLMN information selected by the UE, the method further includes: selecting, by the UE, one PLMN from the plurality of PLMNs sent by the broadcast system information to initiate an access call. Preferably, the eNodeB specifies a NAS node for the UE according to the information carried in the RRC connection setup request message or the RRC connection setup complete message of the UE; or the eNodeB specifies a NAS node for the UE according to the local policy, including: the eNodeB establishes the UE in the RRC connection. The registration MME carried in the request message or the RRC connection setup complete message is designated as the access MME of the UE; or the eNodeB specifies an access MME for the UE according to the local policy. Preferably, the type of access call is an emergency call. According to another aspect of the present invention, an apparatus for selecting an NSA node is provided on the eNodeB side, including: a selection module, configured to select a NAS node for the UE according to the PLMN selected by the UE access; and a designated module, configured to be in the NAS node If the selection fails, the UE designates a NAS node according to the information carried in the RRC connection setup request message or the RRC connection setup complete message, or specifies a NAS node for the UE according to the local policy. Preferably, the NAS node is a mobility management entity MME. Preferably, if all MMEs connected to the eNodeB do not support the PLMN, or the MME supporting the PLMN and the eNodeB are in a disconnected state, it is determined that the NAS node selection fails. Preferably, the specifying module includes: a first designated sub-module, configured to designate the registration MME carried in the RRC connection setup request message or the RRC connection setup complete message of the UE as the access MME of the UE; the second designated sub-module is set to The UE is assigned an access MME according to the local policy. Preferably, the apparatus further comprises: a judging module, configured to determine whether the type of the access call is an emergency call if the selection module fails to be selected, and if yes, invoke the designated module. According to the embodiment of the present invention, a NAS node is specified for the UE according to the information carried in the RRC connection setup request message or the RRC connection setup complete message, or the eNodeB specifies a NAS node according to the local policy, thereby solving the UE selection. The eNodeB supports, but when the PLMN is not supported by the MME, how to select the NAS node for the UE, thereby achieving the effect of improving the success rate of the UE access. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, 1 is a flow chart of an NSA node selection method according to an embodiment of the present invention; FIG. 2 is a block diagram of an NSA node selection apparatus according to an embodiment of the present invention; FIG. 3 is an NSA node selection according to Embodiment 1 of the present invention; FIG. 4 is a flowchart of a method for selecting an NSA node according to Embodiment 2 of the present invention; and FIG. 5 is a flowchart of a method for selecting an NSA node according to Embodiment 3 of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. 1 is a flow chart of an NSA node selection method according to an embodiment of the present invention. As shown in FIG. 1, the method includes the following steps: Step S102: The eNodeB selects a NAS node for the UE according to the PLMN selected by the UE access. Step S104: If the NAS node fails to select, the eNodeB specifies a NAS node according to the information carried in the RRC connection setup request message or the RRC connection setup complete message, or the eNodeB specifies a NAS node according to the local policy. In this embodiment, the UE is designated by the NAS according to the information carried in the RRC connection setup request message or the RRC connection setup complete message, or the eNodeB specifies a NAS node according to the local policy, thereby solving the UE selection. The eNodeB supports, but when the PLMN is not supported by the MME, how to select the NAS node for the UE, thereby achieving the effect of improving the success rate of the UE access. In the above step S102, when the UE of the emergency call accesses, the eNodeB selects the MME for the UE. Wherein, in the above step S104, if the eNodeB cannot find the MME capable of supporting the PLMN selected by the UE. Then the eNodeB determines whether the access type of the UE is an emergency call. If it is an emergency call, the eNodeB determines whether the MME supports the UE selected PLMN or not according to the UE in the RRC connection establishment request (RRC Connection). The registration MME information carried in the RRC Connection Setup Request Complete message or the MME is selected according to the local policy to select an MME for access. In this way, even if the PLMN selected by the UE is not supported by the core network, the eNodeB can select the UE for the emergency call to the NAS node, and improve the UE access success rate. 2 is a block diagram showing the structure of an NSA node selection apparatus according to an embodiment of the present invention. The selection device is located on the eNodeB side, as shown in FIG. 2, and includes: a selection module 10, configured to select a NAS node for the UE according to the PLMN selected by the UE access; and a setting module 20, configured to: if the NAS node fails to be selected, according to The information carried by the UE in the RRC Connection Setup Request message or the RRC Connection Setup Complete message specifies a NAS node for the UE; or specifies a NAS node for the UE according to the local policy. The selection module 10 and the specification module 20 are coupled. In this embodiment, the UE is designated by the NAS according to the information carried in the RRC connection setup request message or the RRC connection setup complete message, or the eNodeB specifies a NAS node according to the local policy, thereby solving the UE selection. The eNodeB supports, but when the PLMN is not supported by the MME, how to select the NAS node for the UE, thereby achieving the effect of improving the success rate of the UE access. The NAS node is a mobility management entity MME. Wherein, if all MMEs connected to the eNodeB do not support the PLMN, or the MME supporting the PLMN and the eNodeB are in a disconnected state, it is determined that the NAS node selection fails. The specifying module 20 further includes: a first specifying sub-module 22, configured to designate the registration MME carried in the RRC connection setup request message or the RRC connection setup complete message of the UE as the access MME of the UE; the second designated sub-module 24 , set to specify an access MME for the UE according to the local policy. The selection device further includes: a judging module 30, configured to determine whether the type of the access call is an emergency call if the selection module 10 fails to select, and if so, invoke the designation module 20. FIG. 3 is a flowchart of an NSA node selection method according to Embodiment 1 of the present invention. As shown in FIG. 3, the method includes the following steps: Step S302: The UE receives the broadcast system information, and selects the PLMN3 to initiate the emergency call type access from the PLMNs sent by the system information, where the system may send multiple PLMNs. For example, PLMN1, PLMN2, PLMN3. Step S304, the eNodeB selects an MME for the UE according to the PLMN3 selected by the UE. In step S306, since all MMEs connected by the eNodeB do not support the PLMN3, the eNodeB does not select the MME that supports the UE to select the PLMN, and the eNodeB determines whether the UE is an emergency call type access UE. If yes, the eNodeB determines whether the RRC connection establishment request message is The S-TMSI (SAE Temporary Mobile Subscriber Identity; SAE: System Architecture Evolution, SAE: System Architecture Evolution) is carried. If carried, the eNodeB selects an MME for the UE according to the information of the S-TMSI. If not carried, the eNodeB determines whether the RRC connection setup complete message carries the Registered MME (registered MME) information. If carried, the eNodeB selects an MME for the UE according to the Registered MME information. If not carried, the eNodeB selects the MME for the UE according to the local policy. Step S308, the eNodeB and the selected MME continue to perform the access procedure of the UE. 4 is a flowchart of an NSA node selection method according to Embodiment 2 of the present invention. As shown in FIG. 4, the method includes the following steps: Step S402: The UE receives the broadcast system information, and selects the PLMN3 from the PLMN that is sent by the system information to initiate an emergency call type access, where the system may send multiple PLMNs. For example, PLMN1, PLMN2, PLMN3. Step S404, the eNodeB selects an MME for the UE according to the PLMN information selected by the UE. Step S406, the eNodeB cannot select the MME for the UE because the MME supporting the PLMN3 is disconnected from the eNodeB. At this time, the eNodeB does not select the MME that supports the UE to select the PLMN, and the eNodeB determines whether the UE is the UE that the emergency call type accesses. If yes, the eNodeB determines whether the RRC connection setup request message carries the S-TMSI (SAE Temporary Mobile Subscriber Identity, SAE Temporary Mobile Subscriber Identity; SAE: System Architecture Evolution, if carried, the eNodeB selects an MME for the UE based on the S-TMSI information. If not carried, the eNodeB determines whether the RRC connection setup complete message carries the Registered MME (registered MME) information. If carried, the eNodeB selects an MME for the UE according to the Registered MME information. If not carried, the eNodeB selects the MME for the UE according to the local policy. Step S408, the eNodeB and the selected MME continue to perform the access process of the UE. FIG. 5 is a flowchart of an NSA node selection method according to Embodiment 3 of the present invention. As shown in Figure 5, the following steps are included: Step S502, the Ue receives the broadcast system information, selects a PLMN from the PLMN issued by the system information to initiate an emergency call type access step S504, and the eNodeB selects the MME for the UE according to the PLMN information selected by the UE. Step S506, if the eNodeB does not select support The UE selects the MME of the PLMN, and the eNodeB determines whether the UE is an UE that is accessed by the emergency call type. If yes, the eNodeB selects an MME access for the UE according to the load balancing principle. Step S508, the eNodeB and the selected MME continue to perform the access process of the UE. In another embodiment, a software for selecting an NSA node for performing the technical solution described in the above embodiments is also provided. In another embodiment, a storage medium is also provided, the software being stored, including but not limited to an optical disk, a floppy disk, a hard disk, a rewritable memory, and the like. In the above embodiments of the present invention, the UE is designated with one NAS node according to the information carried in the RRC connection setup request message or the RRC connection setup complete message, or the eNodeB specifies a NAS node according to the local policy, so that the UE is in the UE. If the selected PLMN is not supported by the core network, the eNodeB can also select the NAS to the emergency call UE, thereby achieving the effect of improving the UE access success rate. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. 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 NSA节点的选择方法， 包括： 1. A method for selecting an NSA node, including:
eNodeB根据 UE接入选择的 PLMN为所述 UE选择 NAS节点； 如果所述 NAS节点选择失败， 则所述 eNodeB根据所述 UE在 RRC连接 建立请求消息或 RRC连接建立完成消息中携带的信息为所述 UE指定一个 NAS 节点； 或者所述 eNodeB根据本地策略为所述 UE指定一个 NAS节点。  The eNodeB selects a NAS node for the UE according to the PLMN selected by the UE access; if the NAS node fails to select, the eNodeB is configured according to the information carried in the RRC connection setup request message or the RRC connection setup complete message of the UE. The UE specifies a NAS node; or the eNodeB specifies a NAS node for the UE according to a local policy.
2. 根据权利要求 1所述的方法， 其中， 所述 NAS节点为移动性管理实体 MME。 2. The method according to claim 1, wherein the NAS node is a mobility management entity MME.
3. 根据权利要求 2所述的方法， 其中， 如果与所述 eNodeB连接的所有 MME都 不支持所述 PLMN， 或者支持所述 PLMN的 MME与所述 eNodeB处于连接断 开状态， 则确定为所述 NAS节点选择失败。 The method according to claim 2, wherein if all the MMEs connected to the eNodeB do not support the PLMN, or if the MME supporting the PLMN and the eNodeB are in a disconnected state, it is determined to be The NAS node selection failed.
4. 根据权利要求 1所述的方法， 其中， eNodeB根据 UE接入选择的 PLMN信息 为所述 UE选择 NAS节点之前， 还包括： The method according to claim 1, wherein, before the eNodeB selects the NAS node for the UE according to the PLMN information selected by the UE, the eNodeB further includes:
所述 UE从广播系统信息下发的多个 PLMN中选择一个 PLMN发起接入呼 叫„  The UE selects one PLMN from multiple PLMNs sent by the broadcast system information to initiate an access call „
5. 根据权利要求 2所述的方法， 其中， 所述 eNodeB根据所述 UE在 RRC连接建 立请求消息或 RRC连接建立完成消息中携带的信息为所述 UE指定一个 NAS 节点； 或者所述 eNodeB根据本地策略为所述 UE指定一个 NAS节点， 包括： 所述 eNodeB将所述 UE在 RRC连接建立请求消息或 RRC连接建立完成 消息中携带的注册 MME指定为所述 UE的接入 MME; 或者所述 eNodeB根据 本地策略为所述 UE指定一个接入 MME。 The method according to claim 2, wherein the eNodeB specifies a NAS node for the UE according to information carried by the UE in an RRC connection setup request message or an RRC connection setup complete message; or the eNodeB is configured according to Determining, by the local policy, a NAS node for the UE, including: the eNodeB designating, by the eNodeB, the registration MME carried in the RRC connection setup request message or the RRC connection setup complete message as the access MME of the UE; The eNodeB specifies an access MME for the UE according to a local policy.
6. 根据权利要求 1至 5任一项所述的方法， 其中， 所述接入呼叫的类型为紧急呼 叫„ The method according to any one of claims 1 to 5, wherein the type of the access call is an emergency call „
7. 一种 NSA节点的选择装置， 位于 eNodeB侧， 该选择装置包括： 7. An apparatus for selecting an NSA node, located on an eNodeB side, the selection apparatus includes:
选择模块， 设置为根据 UE接入选择的 PLMN为所述 UE选择 NAS节点； 指定模块， 设置为在所述 NAS节点选择失败的情况下， 根据所述 UE在 RRC连接建立请求消息或 RRC连接建立完成消息中携带的信息为所述 UE指 定一个 NAS节点； 或者根据本地策略为所述 UE指定一个 NAS节点。 a selection module, configured to select a NAS node for the UE according to the PLMN selected by the UE access; and a setting module, configured to establish, according to the UE, an RRC connection setup request message or an RRC connection, if the NAS node fails to be selected The information carried in the completion message specifies a NAS node for the UE; or a NAS node is designated for the UE according to a local policy.
8. 根据权利要求 7所述的装置， 其中， 所述 NAS节点为移动性管理实体 MME。 8. The apparatus according to claim 7, wherein the NAS node is a mobility management entity MME.
9. 根据权利要求 8所述的装置， 其中， 如果与所述 eNodeB连接的所有 MME都 不支持所述 PLMN， 或者支持所述 PLMN的 MME与所述 eNodeB处于连接断 开状态， 则确定为所述 NAS节点选择失败。 9. The apparatus according to claim 8, wherein, if all MMEs connected to the eNodeB do not support the PLMN, or if an MME supporting the PLMN is in a disconnected state with the eNodeB, determining The NAS node selection failed.
10. 根据权利要求 8所述的装置， 其中， 所述指定模块包括： 10. The device according to claim 8, wherein the specifying module comprises:
第一指定子模块， 设置为将所述 UE在 RRC连接建立请求消息或 RRC连 接建立完成消息中携带的注册 MME指定为所述 UE的接入 MME;  a first designated sub-module, configured to specify, by the UE, a registration MME carried in an RRC connection setup request message or an RRC connection setup complete message as an access MME of the UE;
第二指定子模块， 设置为根据本地策略为所述 UE指定一个接入 MME。  And a second designated submodule, configured to specify an access MME for the UE according to a local policy.
11. 根据权利要求 7所述的装置， 其中， 所述装置还包括： 判断模块， 设置为在选择模块选择失败的情况下， 判断所述接入呼叫的类 型是否为紧急呼叫， 如果是， 则调用所述指定模块。 The device according to claim 7, wherein the device further comprises: a determining module, configured to determine whether the type of the access call is an emergency call if the selection module fails to be selected, and if yes, Call the specified module.
PCT/CN2013/080569 2012-08-03 2013-07-31 Method and device for selecting nas node WO2014019521A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210275103.X 2012-08-03
CN201210275103.XA CN102833819B (en) 2012-08-03 2012-08-03 The system of selection of NAS nodes and device

Publications (1)

Publication Number Publication Date
WO2014019521A1 true WO2014019521A1 (en) 2014-02-06

Family

ID=47336722

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/080569 WO2014019521A1 (en) 2012-08-03 2013-07-31 Method and device for selecting nas node

Country Status (2)

Country Link
CN (1) CN102833819B (en)
WO (1) WO2014019521A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102833819B (en) * 2012-08-03 2018-03-27 中兴通讯股份有限公司 The system of selection of NAS nodes and device
CN104883704B (en) * 2014-02-27 2018-12-25 宇龙计算机通信科技(深圳)有限公司 A kind of automatic error correction method and device of mobile terminal access point parameters
CN106817684A (en) * 2015-11-27 2017-06-09 宏碁股份有限公司 The control method and user equipment of urgency traffic
CN116321537A (en) * 2018-08-07 2023-06-23 维沃移动通信有限公司 Method and equipment for determining networking type supported by cell
CN113038481B (en) * 2019-12-24 2022-08-23 中国移动通信集团吉林有限公司 Method and device for generating auxiliary carrier adding cell

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101394610A (en) * 2008-11-10 2009-03-25 华为技术有限公司 Method and device for realizing network sharing under network gateway core network configuration
CA2776248A1 (en) * 2009-10-02 2011-04-07 Research In Motion Limited Determining establishment causes for emergency sessions
CN102118721A (en) * 2010-01-04 2011-07-06 中兴通讯股份有限公司 Evolved packet system and attachment processing method of emergency call thereof
CN102469512A (en) * 2010-11-04 2012-05-23 大唐移动通信设备有限公司 Method for processing access process and device for realizing same
CN102833819A (en) * 2012-08-03 2012-12-19 中兴通讯股份有限公司 NAS (Non-Access Stratum) node selecting method and device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100479600C (en) * 2006-07-19 2009-04-15 华为技术有限公司 Method for selecting core network by network resource identification code
CN101754357B (en) * 2008-12-05 2012-05-23 中兴通讯股份有限公司 Method for solving calling failure caused by abnormality of core network
US9497792B2 (en) * 2010-01-08 2016-11-15 Blackberry Limited Routing of messages for mobile communication devices during emergency calls
CN102196531B (en) * 2010-03-04 2013-09-11 上海华为技术有限公司 Method and device for selecting core network to be accessed

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101394610A (en) * 2008-11-10 2009-03-25 华为技术有限公司 Method and device for realizing network sharing under network gateway core network configuration
CA2776248A1 (en) * 2009-10-02 2011-04-07 Research In Motion Limited Determining establishment causes for emergency sessions
CN102118721A (en) * 2010-01-04 2011-07-06 中兴通讯股份有限公司 Evolved packet system and attachment processing method of emergency call thereof
CN102469512A (en) * 2010-11-04 2012-05-23 大唐移动通信设备有限公司 Method for processing access process and device for realizing same
CN102833819A (en) * 2012-08-03 2012-12-19 中兴通讯股份有限公司 NAS (Non-Access Stratum) node selecting method and device

Also Published As

Publication number Publication date
CN102833819A (en) 2012-12-19
CN102833819B (en) 2018-03-27

Similar Documents

Publication Publication Date Title
CN110291837B (en) Network registration and network slice selection system and method
JP6679751B2 (en) Methods for service slice selection and isolation
KR102310821B1 (en) Target cell access method and device
US12010576B2 (en) Communication method, apparatus, and system
JP6129974B2 (en) ANDSF policy for WLAN and PLMN selection
US9723476B2 (en) Location registration for a device-to-device (D2D) user equipment
US11310843B2 (en) PDU session establishment method and apparatus
JP2022062265A (en) Method and apparatus for selecting core network in mobile communication system
JP2021514166A (en) Inducing roaming in wireless communication networks
US11297680B2 (en) Method and apparatus for handling emergency services in a wireless network
WO2014089754A1 (en) Access control method, base station, user equipment and mobile management entity
JP2012514934A (en) Method and apparatus for load balancing in a wireless communication system
WO2013064126A1 (en) Communication matching method, user equipment and base station
WO2014146474A1 (en) Terminal registration method, terminal discovery method, terminal and device
WO2013082984A1 (en) Method for attaching e-utran and mobility management entity
WO2012097731A1 (en) Location management method for group-based machine type communication (mtc) devices and device therefor
WO2014019521A1 (en) Method and device for selecting nas node
WO2021197489A1 (en) Communication system, method and apparatus
CN114079995A (en) Relay management method and communication device
WO2018219253A1 (en) Access control method and apparatus
WO2019218762A1 (en) Policy control method, device and system
KR20180132851A (en) A method, apparatus, and system for handling dedicated core network transitions
WO2019029347A1 (en) Cell reselection method and device, closed subscriber group verification method and device, and storage medium
WO2017129101A1 (en) Routing control method, apparatus and system
Sharmila et al. Proximity services based device-to-device framework design for direct discovery

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13826543

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13826543

Country of ref document: EP

Kind code of ref document: A1