WO2018161803A1

WO2018161803A1 - Method and device for selecting network slices

Info

Publication number: WO2018161803A1
Application number: PCT/CN2018/077010
Authority: WO
Inventors: 武绍芸
Original assignee: 华为技术有限公司
Priority date: 2017-03-09
Filing date: 2018-02-23
Publication date: 2018-09-13
Also published as: CN106982458B; CN106982458A

Abstract

Disclosed are a method and device for selecting network slices for solving the problem in the prior art of not being able to guarantee a user the same experience in a visit network as in the home network. The method comprises: a first SSF of a VPLMN receives a slice selection request, the slice selection request being used for requesting the first SSF to select a network slice for a roaming terminal device, and the slice selection request comprising information of conditions which the requested network slice is required to satisfy; the first SSF sends the information of conditions to a second SSF of a HPLMN; the first SSF receives the slice information, sent by the second SSF, of the first network slice satisfying the information of the conditions; the first SSF selects a second network slice for the terminal device on the basis of the slice information of the first network slice.

Description

一种网络切片的选择方法及装置本申请要求于 2017年 3月 9 日提交中国专利局、申请号为 201710137404. 9、发明名称为 "一种网络切片的选择方法及装置" 的中国专利申请的优先权，其全部内容通过引用结合在本申请中。技术领域 The invention relates to a method and a device for selecting a network slice. The application is filed on March 9, 2017, the Chinese Patent Office, the application number is 201710137404. 9. The invention is entitled "A Method and Apparatus for Selecting a Network Slice" Priority is hereby incorporated by reference in its entirety. Technical field

本申请涉及通信技术领域，尤其涉及一种网络切片的选择方法及装置。背景技术 The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for selecting a network slice. Background technique

第五代移动通信技术（5G ) ***提出网络切片概念，一个网络切片满足某一类或一个用例的连接通信服务需求，整个 5G***由满足不同连接能力的大量网络切片组成。网络切片是端对端的，包括无线接入网、核心网以及传输网等，另外，无线接入网、核心网以及传输网等均进行切片化处理，因此多个部分的网络切片连接到一起成为一个能为用户提供一项完整服务的整体的网络切片。不同部分的网络切片之间是逻辑隔离的。 The fifth generation mobile communication technology (5G) system proposes a network slicing concept. A network slice satisfies the connection communication service requirements of a certain class or a use case. The entire 5G system is composed of a large number of network slices satisfying different connection capabilities. The network slice is end-to-end, including the radio access network, the core network, and the transmission network. In addition, the radio access network, the core network, and the transmission network are all sliced, so that the network slices of multiple parts are connected together. An overall network slice that provides users with a complete service. Different parts of the network slices are logically isolated.

针对 5G 网络切片化处理后，用户设备在附着或者业务请求时，面临的网络切片的选择。目前在进行网络切片选择时，一般在网络侧增加独立的逻辑网元切片选择功能实体（英文： Slice Selection Function, 筒称： SSF ), 其负责为 UE选择 UE可接入的网络切片。无线接入网节点（ RAN Node )基于 UE的请求，向 SSF请求为 UE分配网络切片，从而 SSF 在接收到 UE的请求后，为 UE选择网络切片。 The selection of the network slice that the user equipment faces when attaching or requesting a service after the 5G network is sliced. Currently, when performing network slice selection, an independent logical network element slice selection function entity (English: Slice Selection Function, SSF) is generally added on the network side, which is responsible for selecting a network slice accessible by the UE for the UE. The RAN Node requests the SSF to allocate a network slice to the UE based on the request of the UE, so that the SSF selects a network slice for the UE after receiving the request of the UE.

在同一公共陆地移动网络（英文： Public Land Mobile Network, 筒称： PLMN ) 下，用户设备（英文： User Equipment, 筒称： UE )可以只接入一个网络切片，也可以接入多个网络切片，同时使用多个网络切片提供的不同服务。 Under the same public land mobile network (English: Public Land Mobile Network, PLMN), the user equipment (English: User Equipment, UE: UE) can access only one network slice or multiple network slices. , using multiple services provided by multiple network slices at the same time.

针对 UE漫游接入网络包括两种场景：归属地路由（home routed ) 漫游以及本地疏导 ( Local breakout ) 漫游。在归属地路由漫游场景下，当 UE漫游到拜访公共陆地移动网络 (英文： Visit Public Land Mobile Network , 筒称： VPLMN ) 时，拜访地的 SSF以及归属地的 SSF分别基于各自获取的用户的签约信息和策略信息等给该用户选择一个网络切片，并在两个网络切片之间建立一个用户面隧道，用户后续的业务均转发到归属地网络切片处理。而在本地疏导漫游场景下，当 UE漫游到拜访公共陆地移动网络（英文： Visit Public Land Mobile Network, 筒称： VPLMN )时，拜访地的 SSF为用户选择网络切片，因而拜访地的网络切片为用户提供服务，不再需要将业务转发到归属地网络处理。但是由于拜访地和归属地对用户的签约信息和策略信息等的规划可能不一致，导致拜访地的 SSF以及归属地的 SSF为用户选择的网络切片的服务质量等不一致，从而无法确保用户在拜访地得到与在归属地同样的用户体验。发明内容本申请提供一种网络切片的选择方法及装置，用以解决现有技术存在的无法确保用户在拜访地得到与归属地同样的体验的问题。 There are two scenarios for the UE roaming access network: home routed roaming and local breakout roaming. In the home route roaming scenario, when the UE roams to visit the public land mobile network (English: Visit Public Land Mobile Network, VDLMN), the SSF of the visited place and the SSF of the home place are respectively based on the subscriptions of the respective acquired users. Information and policy information, etc., select a network slice for the user, and establish a user plane tunnel between the two network slices, and the subsequent services of the user are forwarded to the home network slice processing. In the local grooming roaming scenario, when the UE roams to visit the public land mobile network (English: Visit Public Land Mobile Network, called: VPLMN), the SSF of the visited place selects the network slice for the user, so the network slice of the visited place is The user provides the service and no longer needs to forward the service to the home network for processing. However, the planning of the subscription information and the policy information of the user may be inconsistent, and the SSF of the visited place and the SSF of the home location may not be consistent with the service quality of the network slice selected by the user, thereby failing to ensure that the user is visiting the place. Get the same user experience as at the home. Summary of the invention The present application provides a method and an apparatus for selecting a network slice to solve the problem that the prior art cannot ensure that the user obtains the same experience as the home location at the visited place.

第一方面，本申请实施例提供了一种网络切片的选择方法，包括： In a first aspect, an embodiment of the present application provides a method for selecting a network slice, including:

拜访公共陆地移动网络 VPLMN的第一切片选择功能 SSF设备接收切片选择请求，所述切片选择请求用于请求所述第一 SSF为漫游的终端设备选择网络切片，所述切片选择请求中包括所请求的网络切片应满足的条件信息；所述第一 SSF将所述条件信息发送给所述终端设备的归属公共陆地移动网络 HPLMN的第二 SSF; 所述第一 SSF接收所述第二 SSF 发送的在所述 HPLMN中满足所述条件信息的第一网络切片的切片信息；所述第一 SSF基于所述第一网络切片的切片信息为所述终端设备选择第二网络切片。 The first slice selection function SSF device accessing the public land mobile network VPLMN receives a slice selection request, and the slice selection request is used to request the first SSF to select a network slice for the roaming terminal device, where the slice selection request includes Condition information that the requested network slice should satisfy; the first SSF sends the condition information to a second SSF of the home public land mobile network HPLMN of the terminal device; the first SSF receives the second SSF transmission The slice information of the first network slice that satisfies the condition information in the HPLMN; the first SSF selects a second network slice for the terminal device based on the slice information of the first network slice.

通过上述方案，在拜访地的 SSF针对终端设备进行切片选择时，优先让归属地的 SSF 为该终端设备选择网络切片，然后拜访地的 SSF根据归属地的选择结果为终端设备选择合适的网络切片，确保了漫游用户在拜访地能够得到合理的切片选择的体验，从而使得漫游用户在拜访地得到与在归属地同样的用户体验的问题。 In the above solution, when the SSF of the visited location performs the slice selection for the terminal device, the SSF of the home location is preferentially selected to select the network slice for the terminal device, and then the visited SSF selects a suitable network slice for the terminal device according to the selection result of the home location. It ensures that the roaming user can get a reasonable slice selection experience at the visited place, so that the roaming user gets the same user experience at the place of the visit.

在一种可能的设计中，所述条件信息中包括以下信息中的至少一种： In one possible design, the condition information includes at least one of the following information:

所述终端设备的标识信息，终端设备的用户信息，业务类型，用户签约服务质量 QoS 信息。 The identification information of the terminal device, the user information of the terminal device, the service type, and the user-signed service quality QoS information.

通过上述设计，在条件信息中包括上述信息，发送给归属地的 SSF, 从而给归属地的 SSF选择网络切片提供很好的依据。 Through the above design, the foregoing information is included in the condition information and sent to the SSF of the home location, thereby providing a good basis for the home SSF to select the network slice.

在一种可能的设计中，所述切片信息包括第一网络切片对应的第一会话管理网络切片选择辅助信息 SM-NSSAI和 /或第一网络切片所满足的 QoS信息。 In a possible design, the slice information includes first session management network slice selection auxiliary information SM-NSSAI corresponding to the first network slice and/or QoS information satisfied by the first network slice.

通过上述设计，通过归属地的 SSF通过将选择的第一网络切片对应的第一会话管理切片选择辅助信息 SM-NSSAI和 /或第一网络切片所满足的 QoS信息发送给拜访地的 SSF, 从而拜访地的 SSF为归属地的 SSF选择网络切片提供了依据，确保漫游用户在拜访地能够进行合理的切片选择，进而得到与在归属地一致的业务体验。 Through the above design, the SF information that is satisfied by the first session management slice selection assistance information SM-NSSAI and/or the first network slice corresponding to the selected first network slice is transmitted to the SSF of the visited place by the SSF of the home network, thereby The SSF of the visited place provides a basis for the SSF to select the network slice at the home location, and ensures that the roaming user can perform reasonable slice selection at the visited place, thereby obtaining a service experience consistent with the attribution.

在一种可能的设计中，在所述切片信息包括所述第一 SM-NSSAI时，所述第一 SSF基于所述第一网络切片的切片信息为所述终端设备选择第二网络切片，包括： In a possible design, when the slice information includes the first SM-NSSAI, the first SSF selects a second network slice for the terminal device based on the slice information of the first network slice, including :

所述第一 SSF基于预配置的 SM-NSSAI映射关系，确定所述第一 SM-NSSAI对应的第二 SM-NSSAI, 所述第二 SM-NSSAI归属于所述第二网络切片。 The first SSF determines, according to the pre-configured SM-NSSAI mapping relationship, a second SM-NSSAI corresponding to the first SM-NSSAI, and the second SM-NSSAI belongs to the second network slice.

通过上述设计，在归属地的第一 SSF上配置 SM-NSSAI映射关系，从而拜访地的 SSF 基于 SM-NSSAI映射关系为漫游用户选择网络切片，由于满足映射关系的 SM-NSSAI对应两个网络切片使得用户得到的业务体验一致，从而确保了漫游用户在拜访地能够进行合理的切片选择，进而得到与在归属地一致的业务体验。 With the above design, the SM-NSSAI mapping relationship is configured on the first SSF of the home location, so that the visited SSF selects the network slice for the roaming user based on the SM-NSSAI mapping relationship, and the SM-NSSAI corresponding to the mapping relationship corresponds to the two network slices. The service experience obtained by the user is consistent, thereby ensuring that the roaming user can perform reasonable slice selection at the visited place, thereby obtaining a service experience consistent with the attribution.

在一种可能的设计中，所述方法还包括： In a possible design, the method further includes:

所述第一 SSF确定所述 SM-NSSAI 映射关系中不存在所述第一 SM-NSSAI对应的 SM-NSSAI时，为所述终端设备选择第三网络切片。 When the first SSF determines that the SM-NSSAI corresponding to the first SM-NSSAI does not exist in the SM-NSSAI mapping relationship, the third network slice is selected for the terminal device.

通过上述设计，为基于 SM-NSSAI映射关系无法选择网络切片的情况，提供了一种可能的实现方式。 Through the above design, a possible implementation manner is provided for the case where the network slice cannot be selected based on the SM-NSSAI mapping relationship.

在一种可能的设计中，在所述切片信息还包括第一网络切片所满足的 QoS信息时，所述方法还包括： In a possible design, when the slice information further includes QoS information that is satisfied by the first network slice, The method also includes:

所述第一 SSF确定所述 SM-NSSAI 映射关系中不存在所述第一 SM-NSSAI对应的 SM-NSSAI时，所述第一 SSF在所述 VPLMN中选择满足所述第一网络切片所满足的 QoS 信息的第二网络切片。 When the first SSF determines that the SM-NSSAI corresponding to the first SM-NSSAI does not exist in the SM-NSSAI mapping relationship, the first SSF selects in the VPLMN to satisfy that the first network slice satisfies The second network slice of QoS information.

通过上述设计，在基于 SM-NSSAI映射关系无法选择网络切片的情况，从而根据 QoS 信息选择网络切片，使得在拜访地选择的网络切片与在归属地选择的网络切片能满足用户同样的 Q0S要求，从而确保了漫游用户在拜访地能够进行合理的切片选择，进而得到与在归属地一致的业务体验。 Through the above design, in the case that the network slice cannot be selected based on the SM-NSSAI mapping relationship, the network slice is selected according to the QoS information, so that the network slice selected at the visited location and the network slice selected at the home location can satisfy the same QOS requirement of the user, Therefore, it is ensured that the roaming user can make a reasonable slice selection at the visited place, thereby obtaining a service experience consistent with the attribution.

在一种可能的设计中，在所述切片信息包括所述第一网络切片所满足的 QoS信息时，所述第一 SSF基于所述第一网络切片的切片信息为所述终端设备选择第二网络切片，包括：所述第一 SSF选择满足所述第一网络切片所满足的 QoS信息的第二网络切片。 In a possible design, when the slice information includes the QoS information that is satisfied by the first network slice, the first SSF selects the second device for the terminal device based on the slice information of the first network slice. The network slice includes: the first SSF selecting a second network slice that satisfies QoS information that is satisfied by the first network slice.

通过上述设计，根据在归属地选择的网络切片的 QoS信息在拜访地选择网络切片，使得在拜访地选择的网络切片与在归属地选择的网络切片能满足用户同样的 QoS要求，从而确保了漫游用户在拜访地能够进行合理的切片选择 , 进而得到与在归属地一致的业务体验。 Through the above design, the network slice is selected in a visited manner according to the QoS information of the network slice selected at the home, so that the network slice selected at the visited and the network slice selected at the home can satisfy the same QoS requirement of the user, thereby ensuring roaming. The user can make a reasonable slice selection at the visited place, thereby obtaining a business experience consistent with the attribution.

所述第一 SSF在确定没有满足所述第一网络切片所满足的 QoS信息时，向切片管理系统发送反馈信息，所述反馈信息用于通知管理员没有满足所述终端设备的业务需求的网络切片。 When the first SSF determines that the QoS information that is satisfied by the first network slice is not met, the first SSF sends feedback information to the slice management system, where the feedback information is used to notify the administrator that the network does not meet the service requirements of the terminal device. slice.

通过上述设计，管理员在收到上述反馈信息后，可以规划一个网络切片，或者切片管理***根据预配置的策略自动生成一个网络切片。其中，反馈信息中可以包括所述终端设备的标识信息、 VPLMN的标识信息、 HPLMN的标识、归属地的 SM-NSSAI以及 QoS信息等等。 With the above design, after receiving the above feedback information, the administrator can plan a network slice, or the slice management system automatically generates a network slice according to the pre-configured policy. The feedback information may include identification information of the terminal device, identifier information of the VPLMN, identifier of the HPLMN, SM-NSSAI of the home location, and QoS information.

第二方面，本申请实施例提供了一种网络切片的选择方法，包括： In a second aspect, the embodiment of the present application provides a method for selecting a network slice, including:

归属公共陆地移动网络 HPLMN的第二切片选择功能实体 SSF接收拜访公共陆地移动网络的 VPLMN的第一 SSF发送的、且用于为漫游的终端设备选择网络切片的条件信息；所述第二 SSF选择满足所述条件信息的第一网络切片，并将所述第一网络切片的切片信息发送给所述第一 SSF, 以使得所述第一 SSF基于所述第一网络切片的切片信息为所述终端设备选择第二网络切片。 The second slice selection function entity SSF of the home public land mobile network HPLMN receives condition information transmitted by the first SSF of the VPLMN that visited the public land mobile network and used to select a network slice for the roaming terminal device; the second SSF selection a first network slice that satisfies the condition information, and sends the slice information of the first network slice to the first SSF, so that the first SSF is based on the slice information of the first network slice. The terminal device selects the second network slice.

基于与方法实施例同样的发明构思，第三方面，本申请实施例提供了一种网络切片的选择装置，包括： Based on the same inventive concept as the method embodiment, the third aspect of the present disclosure provides a device for selecting a network slice, including:

接收单元，用于接收切片选择请求，所述切片选择请求用于请求为漫游的终端设备选择网络切片，所述切片选择请求中包括所请求的网络切片应满足的条件信息；发送单元，用于将所述条件信息发送给所述终端设备的归属公共陆地移动网络 HPLMN的第二 SSF; a receiving unit, configured to receive a slice selection request, where the slice selection request is used to request a terminal device for roaming Selecting a network slice, the slice selection request includes condition information that the requested network slice should satisfy; a sending unit, configured to send the condition information to a second SSF of the home public land mobile network HPLMN of the terminal device;

所述接收单元，还用于接收所述 HPLMN发送的在所述 HPLMN中满足所述条件信息的第一网络切片的切片信息； The receiving unit is further configured to receive, by the HPLMN, slice information of a first network slice that satisfies the condition information in the HPLMN;

选择单元，用于基于所述第一网络切片的切片信息为所述终端设备选择第二网络切片。在一种可能的设计中，所述条件信息中包括以下信息中的至少一种： And a selecting unit, configured to select, according to the slice information of the first network slice, a second network slice for the terminal device. In one possible design, the condition information includes at least one of the following information:

在一种可能的设计中，所述切片信息包括第一网络切片对应的第一会话管理切片选择辅助信息 SM-NSSAI和 /或第一网络切片所满足的 QoS信息。 In a possible design, the slice information includes first session management slice selection assistance information SM-NSSAI corresponding to the first network slice and/or QoS information satisfied by the first network slice.

在一种可能的设计中，在所述切片信息包括所述第一 SM-NSSAI时，所述选择单元，具体用于基于预配置的 SM-NSSAI 映射关系，确定所述第一 SM-NSSAI 对应的第二 SM-NSSAI, 所述第二 SM-NSSAI归属于所述第二网络切片。 In a possible design, when the slice information includes the first SM-NSSAI, the selecting unit is specifically configured to determine, according to the pre-configured SM-NSSAI mapping relationship, the first SM-NSSAI corresponding The second SM-NSSAI, the second SM-NSSAI belongs to the second network slice.

在一种可能的设计中，所述选择单元，还用于确定所述 SM-NSSAI映射关系中不存在所述第一 SM-NSSAI对应的 SM-NSSAI时，为所述终端设备选择第三网络切片。 In a possible design, the selecting unit is further configured to: when the SM-NSSAI corresponding to the first SM-NSSAI does not exist in the SM-NSSAI mapping relationship, select a third network for the terminal device. slice.

在一种可能的设计中，在所述切片信息还包括第一网络切片所满足的 QoS信息时，所述选择单元，还用于确定所述 SM-NSSAI映射关系中不存在所述第一 SM-NSSAI对应的 SM-NSSAI时，选择满足所述第一网络切片所满足的 QoS信息的第二网络切片。 In a possible design, when the slice information further includes QoS information that is satisfied by the first network slice, the selecting unit is further configured to determine that the first SM does not exist in the SM-NSSAI mapping relationship. - When the SM-NSSAI corresponding to the NSSAI, the second network slice that satisfies the QoS information satisfied by the first network slice is selected.

在一种可能的设计中，在所述切片信息包括所述第一网络切片所满足的 QoS信息时，所述选择单元，还用于选择满足所述第一网络切片所满足的 QoS信息的第二网络切片。 In a possible design, when the slice information includes the QoS information that is satisfied by the first network slice, the selecting unit is further configured to select, to meet the QoS information that is satisfied by the first network slice. Two network slices.

在一种可能的设计中，所述发送单元，还用于在确定没有满足所述第一网络切片所满足的 QoS信息时，向切片管理***发送反馈信息，所述反馈信息用于通知管理员没有满足所述终端设备的业务需求的网络切片。 In a possible design, the sending unit is further configured to: when determining that the QoS information that is satisfied by the first network slice is not met, send feedback information to the slice management system, where the feedback information is used to notify the administrator There is no network slice that satisfies the service requirements of the terminal device.

第四方面，本申请实施例提供了一种网络切片的选择装置，包括： In a fourth aspect, the embodiment of the present application provides a device for selecting a network slice, including:

接收单元，用于接收拜访公共陆地移动网络的 VPLMN发送的、且用于为漫游的终端设备选择网络切片的条件信息； a receiving unit, configured to receive condition information that is sent by a VPLMN that visits the public land mobile network and is used to select a network slice for the roaming terminal device;

选择单元，用于选择满足所述条件信息的第一网络切片； a selecting unit, configured to select a first network slice that satisfies the condition information;

发送单元，用于将所述选择单元选择的所述第一网络切片的切片信息发送给所述第一 SSF, 以使得所述 VPLMN基于所述第一网络切片的切片信息为所述终端设备选择第二网络切片。 a sending unit, configured to send, to the first SSF, slice information of the first network slice selected by the selecting unit, so that the VPLMN selects the terminal device based on slice information of the first network slice The second network slice.

基于与方法实施例同样的发明构思，第五方面，本申请实施例还提供了一种网络切片的选择装置，该装置包括： Based on the same inventive concept as the method embodiment, the fifth aspect of the present application further provides a network slice selection device, where the device includes:

通信接口，处理器以及存储器。 Communication interface, processor and memory.

存储器用于存储处理器所执行的程序代码。所述处理器通过通信接口收发数据 , 具体用于执行存储器存储的程序代码 , 实现第一方面或第一方面的任一种设计所述的方法。 The memory is used to store program code executed by the processor. The processor transmits and receives data through a communication interface, specifically for executing program code stored in the memory, and implements the method described in any one of the first aspect or the first aspect.

基于与方法实施例同样的发明构思，第六方面，本申请实施例还提供了一种网络切片的选择装置，该装置包括：，该装置包括： Based on the same inventive concept as the method embodiment, in a sixth aspect, the embodiment of the present application further provides a network slice selection device, where the device includes:

存储器用于存储处理器所执行的程序代码。 The memory is used to store program code executed by the processor.

所述处理器通过通信接口收发数据 , 具体用于执行存储器存储的程序代码 , 实现第二方面或第二方面的任一种设计所述的方法。 The processor transmits and receives data through a communication interface, specifically for executing program code stored in the memory, and implements the method described in any one of the second aspect or the second aspect.

第七方面，本申请实施例中还提供一种计算机存储介质，该存储介质中存储软件程序，该软件程序在被一个或多个处理器读取并执行时可实现第一方面或上述第一方面的任意一种设计提供的方法，或者实现第二方面或者第二方面的任一种设计所提供的方法。附图说明 In a seventh aspect, the embodiment of the present application further provides a computer storage medium, where the software program stores a software program, where the software program can implement the first aspect or the first one when being read and executed by one or more processors. A method provided by any one of the aspects, or a method provided by any one of the second aspect or the second aspect. DRAWINGS

图 1为本申请实施例提供的切片管理***进行切片管理的示意图； 1 is a schematic diagram of slice management performed by a slice management system according to an embodiment of the present application;

图 2为本申请实施例提供的一种 5G网络架构示意图； 2 is a schematic diagram of a 5G network architecture provided by an embodiment of the present application;

图 3为本申请实施例提供的网络切片的选择方法流程图； FIG. 3 is a flowchart of a method for selecting a network slice according to an embodiment of the present application;

图 4为本申请实施例提供的 SM-NSSAI映射关系示意图； 4 is a schematic diagram of a SM-NSSAI mapping relationship provided by an embodiment of the present application;

图 5为本申请实施例提供的网络切片的选择方法示意图； FIG. 5 is a schematic diagram of a method for selecting a network slice according to an embodiment of the present application;

图 6为本申请实施例提供的一种应用于 VPLMN的第一 SSF的网络切片的选择装置示意图； FIG. 6 is a schematic diagram of a device for selecting a network slice of a first SSF applied to a VPLMN according to an embodiment of the present application;

图 7为本申请实施例提供的另一种应用于 VPLMN的第一 SSF的网络切片的选择装置示意图； FIG. 7 is a schematic diagram of another apparatus for selecting a network slice of a first SSF applied to a VPLMN according to an embodiment of the present disclosure;

图 8为本申请实施例提供的一种应用于 HPLMN的第二 SSF的网络切片的选择装置示意图； FIG. 8 is a schematic diagram of a device for selecting a network slice of a second SSF applied to an HPLMN according to an embodiment of the present application;

图 9为本申请实施例提供的另一种应用于 HPLMN的第二 SSF的网络切片的选择装置示意图。具体实施方式 FIG. 9 is a schematic diagram of another apparatus for selecting a network slice of a second SSF applied to an HPLMN according to an embodiment of the present application. detailed description

网络切片，即 "5G切片"，支持一个特定的连接类型的通信服务，并为这个服务提供控制面（英文： Control Plane, 筒称： CP )和用户面（英文： User Plane, 筒称： UP )特定的处理方法。为了达到这个目的，移动运营商在核心网（英文： core network, 筒称： CN ) 的控制平台上通过一系列网络功能的配置与编排实现成百上千的网络切片的配置与管理，以便支持特定的用例或商业模式。网络切片可以涉及端到端之间的网元的一系列配置与支持，包含用户设备（英文： user equipment,筒称： UE )端、接入网（英文： radio access network, 筒称： RAN )等设备。网络切片可以用于支持特定应用和商业模式，仅仅提供必要的业务处理，并避免其它所有不必要的功能，筒化复杂度，缩短业务上市时间；网络切片允许第三方对网络切片做一定程度的控制，提升灵活性，减少运营商的工作量；网络切片除了包括资源上网络切片，还提供基于切片资源的网络及网元的通用的管理方法，如部署、扩缩容、软件升级等。切片数量比较大时，将会增加运营商的维护成本。为了降低维护成本，可以提升网络部署、扩缩容、升级等生命周期管理过程的自动化程度；另外，网络切片与传统的移动虚拟网络运营（英文： mobile virtual network operator, 筒称： MVNO )共享同一张网络的方式不同，网络切片釆用虚拟化技术，从资源上实现了不同切片之间的隔离，才艮据多样化需求虚拟出不同的多张网络。 Network slicing, ie "5G slicing", supports a specific connection type of communication service, and provides a control plane for this service (English: Control Plane, cartridge: CP) and user plane (English: User Plane, cartridge: UP ) specific processing methods. In order to achieve this goal, the mobile operator implements the configuration and management of hundreds of network slices through a series of network function configuration and scheduling on the control platform of the core network (English: core network, cartridge: CN), in order to support Specific use cases or business models. Network slicing can involve a series of configuration and support of network elements between end-to-end, including user equipment (English: user equipment, UE: UE), access network (English: radio access network, cartridge: RAN) And other equipment. Network slicing can be used to support specific applications and business models, providing only the necessary business processing, avoiding all other unnecessary functions, reducing the complexity and shortening the time to market; network slicing allows third parties to do a certain degree of network slicing. Control, increase flexibility, reduce operator workload; network slice in addition to package Including network slicing on resources, it also provides general management methods for network and network elements based on slicing resources, such as deployment, expansion, and software upgrade. When the number of slices is large, the maintenance cost of the operator will increase. In order to reduce maintenance costs, the lifecycle management process such as network deployment, expansion, and upgrade can be improved. In addition, network slicing shares the same with traditional mobile virtual network operators (English: mobile virtual network operator, MVNO) The way of the network is different. The network slice uses the virtualization technology to realize the isolation between different slices from the resources, and then virtualizes different networks according to the diversified requirements.

网络切片将可以实现网络服务质量（英文： Quality of Service, 筒称： QoS ) 的隔离，灵活的网络管控与网络效率的提升，网络管理者将可以根据端到端的 QoS需求进行分解，映射到不同的子网络***与转发设备，同时以低成本，高速率的方式为建立网络切片，并不影响现有的业务。网络切片可以提供部分灵活的可编程接口开放给第三方用户，从而使得第三方用户可以基于开放接口设计并开发信的网络业务并实现快速部署，为运营商带来可观的经济效益，同时提高了现有网络的使用效率。 Network slicing will enable the isolation of network quality of service (English: Quality of Service, QoS), flexible network management and network efficiency, network managers will be able to decompose according to end-to-end QoS requirements, mapping to different The sub-network system and the forwarding device simultaneously establish a network slice in a low-cost, high-rate manner, and do not affect existing services. Network slicing can provide a partially flexible and programmable interface to third-party users, enabling third-party users to design and develop trusted network services based on open interfaces and achieve rapid deployment, bringing considerable economic benefits to operators while improving The efficiency of the use of existing networks.

参见图 1所示，网络管理者可以通过切片管理***对网络的网络切片进行管理，包括创建和撤销等等操作。一个网络切片根据功能被划分后，可以包括 RAN切片、核心网切片以及传输切片。与当前 4G网络类比， RAN切片的能力相当于 1个或多个接入网节点（英文： eNode, 筒称： eNB ), 核心网切片的能力相当于（英文： Mobility Management Entity, 筒称： MME )、服务网关（英文： Serving Gate Way, 筒称： SGW )的控制面、分组数据网网关（英文： Packet Data Network Gateway, 筒称： PGW ) 的控制面，策略与计费规则功能单元（英文： Policy and Charging Rules Function, 筒称： PCRF ), 归属签约用户服务器 (英文： Home Subscriber Server, 筒称： HSS )等等。传输切片相当于连接其他设备的路由器等路由转发设备。本申请实施例提供的方案主要是针对核心网上的网络切片的选择。 As shown in Figure 1, the network administrator can manage the network slice of the network through the slice management system, including creating and revoking operations. After a network slice is divided according to functions, it can include RAN slices, core mesh slices, and transport slices. Compared with the current 4G network, the capability of the RAN slice is equivalent to one or more access network nodes (English: eNode, nickname: eNB), and the core network slice capability is equivalent (English: Mobility Management Entity, cartridge: MME Control plane of service gateway (English: Serving Gate Way, cylinder: SGW), control plane of packet data network gateway (English: Packet Data Network Gateway, cylinder: PGW), policy and charging rules function unit : Policy and Charging Rules Function, cartridge: PCRF), Home Subscriber Server (English: Home Subscriber Server, HSS). A transport slice is equivalent to a route-forwarding device such as a router that connects other devices. The solution provided by the embodiment of the present application is mainly for selecting a network slice on the core network.

如图 2所示，为一种可能的 5G网络架构示意图。图 2中，核心网中可以划分为多个网络切片，每个网络切片包含一组特定功能的网络功能（英文： network function, 筒称： NF )。另夕卜，核心网的功能主要包括 CP以及 UP。 CP的功能可以分为公共 CP功能（ Common CP NFs , 筒称： CCNF )以及特定 CP功能（ CP NFs )„公共 CP功能包括移动管理（英文： Mobile Management,筒称： MM )、鉴权（ authentication )等，通过接入管理和移动管理（ Access and mobility management, 筒称： AMF )以及 SSF来实现。特定 CP功能包括会话管理（英文： Session Management, 筒称： SM )等。公共 CP NFs可以被一个或者多个网络切片共同使用，比如图 2中，网络切片 A和网络切片 B共同使用一个公共 CP NFs。 RAN与 SSF 以及各个网络切片连通。终端设备接入 RAN后，通过 SSF选择到合适的网络切片，从而接入数据网络（ data network ) ,通过 CP NFs以及 UP NFs以及参数配置提供定制化的服务，从而形成 5G中端到端的网络切片架构。 SSF在为终端设备选择网络切片时，可以基于用户库（ Subscriber Repository )存储的所述终端设备的用户信息为所述终端设备选择网络切片。 As shown in Figure 2, it is a schematic diagram of a possible 5G network architecture. In Figure 2, the core network can be divided into multiple network slices, and each network slice contains a set of network functions with specific functions (English: network function, nickname: NF). In addition, the functions of the core network mainly include CP and UP. The functions of the CP can be divided into common CP functions (Common CP NFs, cylinder: CCNF) and specific CP functions (CP NFs). „Common CP functions include mobile management (English: Mobile Management, MM), authentication (authentication) ), etc., through access management and mobility management (Access and mobility management, AMF) and SSF. Specific CP functions include session management (English: Session Management, cartridge: SM), etc. Public CP NFs can be One or more network slices are used together, for example, in Figure 2, network slice A and network slice B use a common CP NFs in common. The RAN is connected to the SSF and each network slice. After the terminal device accesses the RAN, it selects the appropriate one through the SSF. Network slicing, thus accessing the data network, providing customized services through CP NFs and UP NFs and parameter configuration, thereby forming an end-to-end network slicing architecture in 5G. When SSF selects network slicing for the terminal device, The user information of the terminal device stored based on the Subscriber Repository is Said network terminal device selected slice.

在 5G 的网络环境下，用户的终端设备从归属地网络 HPLMN 漫游到拜访地网络 VPLMN时，需要由 VPLMN的 SSF为终端设备选择网络切片。目前 5G的业务越来越丰富, 并存在大量高带宽、低时延的极致体验诉求，另外， 5G网络架构下，为了达到用户在拜访地与在归属地得到同样的用户体验，除了分配合理的 QoS参数外，还需要针对切片进行合理的选择，传统的网络的漫游是从一张网漫游到另一张网，并没有其他网络的选择，而现在 5G的网络环境下，是 1个网络切片到多个网络切片的漫游，有个更多的选择。 In the 5G network environment, when the user's terminal equipment roams from the home network HPLMN to the visited network VPLMN, the SSF of the VPLMN needs to select the network slice for the terminal device. At present, 5G services are becoming more and more abundant, and there are a lot of high-bandwidth, low-latency extreme experience appeals. In addition, under the 5G network architecture, in order to achieve the same user experience at the visited place and at the place of attribution, in addition to a reasonable allocation In addition to the QoS parameters, you also need to A reasonable choice, the traditional network roaming is roaming from one network to another, and there is no other network choice, but now in the 5G network environment, it is a network slicing to multiple network slices roaming, There is a more choice.

因此，为了达到达到用户在拜访地与在归属地得到同样的用户体验，本申请实施例提供一种网络切片的选择方法及装置，在拜访地的 SSF针对终端设备进行切片选择时，优先让归属地的 SSF为该终端设备选择网络切片，然后拜访地的 SSF根据归属地的选择结果为终端设备选择合适的网络切片，确保了漫游用户在拜访地能够得到合理的切片选择的体验, 从而使得漫游用户在拜访地得到与在归属地同样的用户体验的问题。其中，方法和装置是基于同一发明构思的，由于方法及装置解决问题的原理相似，因此装置与方法的实施可以相互参见，重复之处不再赘述。 Therefore, in order to achieve the same user experience that the user obtains the same user experience at the visited place, the embodiment of the present application provides a method and a device for selecting a network slice. When the SSF of the visited place selects a slice for the terminal device, priority is given to the attribution. The SSF of the ground selects a network slice for the terminal device, and then the SSF of the visited place selects a suitable network slice for the terminal device according to the selection result of the attribution place, thereby ensuring that the roaming user can obtain a reasonable slice selection experience at the visited place, thereby enabling roaming The user gets the same user experience at the place of attribution as the home location. The method and the device are based on the same inventive concept. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and the repeated description is not repeated.

另夕卜，本申请实施例进行网络切片选择时，可以适用于不同网络切片中的公共 CP NFs 部分的选择，还可以适用于针对不同网络切片中特定 CP NFs部分的选择，或者还可以适用于针对公共 CP NFs部分的选择和特定 CP NFs部分的选择，对此本申请实施例中不作具体限定。 In addition, when performing network slice selection, the embodiment of the present application may be applicable to selection of a common CP NFs part in different network slices, and may also be applicable to selection of specific CP NFs parts in different network slices, or may also be applicable to The selection of the common CP NFs portion and the selection of the specific CP NFs portion are not specifically limited in this embodiment of the present application.

本申请实施例中，终端设备可以是可以为无线终端，例如可以为移动电话、计算机、平板电脑、个人数码助理（英文： personal digital assistant, 缩写： PDA )、移动互联网设备 (英文： mobile Internet device, 缩写： MID )、互联网协议（英文： Internet Protocol, 缩写： IP ) 电话、网络打印机和电子书阅读器（英文： e-book reader )、车载设备、可穿戴设备、物联网终端设备，比如火灾检测传感器、智能水表 /电表、智能单车、无人机、工厂监控设备等等。 In this embodiment, the terminal device may be a wireless terminal, for example, a mobile phone, a computer, a tablet, a personal digital assistant (English: personal digital assistant, PDA), and a mobile Internet device (English: mobile Internet device) , Abbreviation: MID), Internet Protocol (English: Internet Protocol, abbreviation: IP) Telephone, network printer and e-book reader (English: e-book reader), car device, wearable device, IoT terminal device, such as fire Detection sensors, smart water meters/meters, smart bicycles, drones, factory monitoring equipment, and more.

本申请实施例可以应用于 5G通信***或者长期演进（英文： long term evolution, 筒称： LTE ) ***等移动通信***。 The embodiments of the present application can be applied to a mobile communication system such as a 5G communication system or a long term evolution (English: long term evolution, LTE) system.

本申请实施例中涉及的会话管理网络切片选择辅助信息（英文： Session Management -Network Slice Selection Assistance Information, 筒称： SM-NSSAI ), 顾名思义是用于网络切片选择的信息。网络切片选择辅助信息包括网络切片信息 /服务类型（英文： Slice/Service type, 筒称： SST )和 /或切片分离器（英文： Slice Differentiator, 筒称： SD )。 SST是指在性能和服务方面的预期网络行为。 SD信息用来补充 SST信息的，允许进一步分化从多个网络切片实例中选择的网络切片实例，这些网络切片实例都满足所指示的切片 /服务类型这些信息。 The session management network slice selection assistance information (English: Session Management - Network Slice Selection Assistance Information, SM-NSSAI), which is referred to in the embodiment of the present application, is information for network slice selection. The network slice selection auxiliary information includes network slice information/service type (English: Slice/Service type, cartridge: SST) and/or slice separator (English: Slice Differentiator, cartridge: SD). SST refers to the expected network behavior in terms of performance and service. The SD information is used to supplement the SST information, allowing further differentiation of network slice instances selected from multiple network slice instances, all of which satisfy the indicated slice/service type information.

在本申请实施例的描述中，多个，是指两个或两个以上。和 /或"，描述关联对象的关联关系，表示可以存在三种关系，例如， A和 /或 B , 可以表示：单独存在 A, 同时存在 A 和 B , 单独存在 B这三种情况。字符 "/"一般表示前后关联对象是一种 "或" 的关系。 In the description of the embodiments of the present application, plural means two or more. And / or ", describe the association relationship of the associated object, indicating that there can be three kinds of relationships, for example, A and / or B, can represent: There are three cases of A, B and A and B, respectively. / "Generally indicates that the contextual object is an "or" relationship.

另外，需要理解的是，在本申请实施例的描述中， "第一"、 "第二 "等词汇，仅用于区分描述的目的，而不能理解为指示或暗示相对重要性，也不能理解为指示或暗示顺序。 In addition, it should be understood that in the description of the embodiments of the present application, the terms "first", "second" and the like are used only to distinguish the purpose of description, and are not to be understood as indicating or implying relative importance, nor understanding. Indicated or implied order.

基于上述描述，如图 3所示，为本申请实施例提供的一种网络切片的选择方法流程示意图。 Based on the foregoing description, as shown in FIG. 3, a flow chart of a method for selecting a network slice according to an embodiment of the present application is shown.

参见图 3 , 该方法包括： Referring to Figure 3, the method includes:

S301 ,拜访公共陆地移动网络 VPLMN的第一切片选择功能 SSF设备接收切片选择请求，所述切片选择请求用于请求所述第一 SSF为漫游的终端设备选择网络切片，所述切片选择请求中包括所请求的网络切片应满足的条件信息。 S301. The first slice selection function SSF device that accesses the public land mobile network VPLMN receives a slice selection request, where the slice selection request is used to request the first SSF to select a network slice for the roaming terminal device, where the slice The selection request includes condition information that the requested network slice should satisfy.

本申请实施例中，第一 SSF设备接收到切片选择请求，可以是在终端设备接入 VPLMN , 发起附着（Attach ) 时触发的，还可以是触发跟踪区域更新 ( TAU )等流程时触发的。 In the embodiment of the present application, the first SSF device receives the slice selection request, which may be triggered when the terminal device accesses the VPLMN, initiates an attach, or may trigger when a tracking area update (TAU) is triggered.

其中，所述条件信息中包括以下信息中的至少一种： The condition information includes at least one of the following information:

所述终端设备的标识信息，终端设备的用户信息，业务类型，用户签约服务质量（英文： quality of Service , 筒称： QoS )信息。 The identification information of the terminal device, the user information of the terminal device, the service type, and the quality of service (English: quality of service, QoS) information.

5302 , 所述第一 SSF将所述条件信息发送给归属公共陆地移动网络 HPLMN的第二 S302: The first SSF sends the condition information to a second of the home public land mobile network HPLMN.

SSF。 SSF.

5303 , 第二 SSF接收所述条件信息后，所述第二 SSF选择满足所述条件信息的第一网络切片，并将所述第一网络切片的切片信息发送给所述第一 SSF。 After the second SSF receives the condition information, the second SSF selects a first network slice that satisfies the condition information, and sends the slice information of the first network slice to the first SSF.

5304,所述第一 SSF接收所述第二 SSF发送的满足所述条件信息的第一网络切片的切片信息。 S304: The first SSF receives the slice information of the first network slice that is sent by the second SSF that meets the condition information.

5305,所述第一 SSF基于所述第一网络切片的切片信息为所述终端设备选择第二网络切片。 S305. The first SSF selects a second network slice for the terminal device based on the slice information of the first network slice.

具体的，第一 SSF基于所述第一网络切片的切片信息在自身所在的 VPLMN中为漫游的所述终端设备选择第二网络切片。 Specifically, the first SSF selects a second network slice for the roaming terminal device in the VPLMN in which the first network slice is based on the slice information of the first network slice.

在一种可能的实现方式中，拜访地的第一 SSF与归属地的第二 SSF通过 SM-NSSAI 进行网络切片的选择。 In a possible implementation manner, the first SSF of the visited place and the second SSF of the home location perform network slice selection by using the SM-NSSAI.

在每个 PLMN中均有 SM-NSSAI的定义。 There is a definition of SM-NSSAI in each PLMN.

SM-NSSAI中包括多种满足不同业务服务的网络切片。 SM-NSSAI includes a variety of network slices that satisfy different business services.

例如，由运营商在归属地网络规划了两个网络切片，面向两种不同 QoS的业务，使用两个不同的 SM-NSSAI作为标识。如表 1所示，为归属地网络 HPLMN中的 SM-NSSAI定义。

For example, the operator plans two network slices on the home network for two different QoS services, using two different SM-NSSAIs as the identifiers. As shown in Table 1, it is defined as SM-NSSAI in the home network HPLMN.

其中， SM-NSSAI=1对应的网络切片为用于低业务服务的网络切片 HA, 其满足规划的带宽上限为 10Mbps, 规划的时延为 100ms等服务质量。 SM-NSSAI=2对应的网络切片为用于高业务服务的网络切片 HA, 其满足规划的带宽上限为 IGbps, 规划的时延为 10ms 等服务质量。

The network slice corresponding to the SM-NSSAI=1 is a network slice HA for the low service service, and the planned bandwidth limit is 10 Mbps, and the planned delay is 100 ms. The network slice corresponding to SM-NSSAI=2 is the network slice HA for high-service services, which satisfies the planned bandwidth limit of IGbps and the planned delay of 10ms.

例如，运营商在拜访地网络规划了三个网络切片，面向三种不同 QoS的业务，使用三个不同的 SM-NSSAI作为标识，如表 2所示，为拜访地网络 VPLMN的 SM-NSSAI定义。表 2 For example, the operator plans three network slices on the visited network for three different QoS services, using three different SM-NSSAIs as the identifiers, as shown in Table 2, for the SM-NSSAI definition of the visited network VPLMN. . Table 2

其中， SM-NSSAI=100对应的网络切片为用于低业务服务的网络切片 VA, 其满足规划的带宽上限为 15Mbps, 规划的时延为 200ms等服务质量。 SM-NSSAI=200对应的网络切片为用于高业务服务的网络切片 VB , 其满足规划的带宽上限为 900Mbps, 规划的时延为 15ms等服务质量。 SM-NSSAI=300对应的网络切片为用于其它业务服务的网络切片 VC, 其满足规划的带宽上限为 10Mbps, 规划的时延为 500ms等服务质量。

The network slice corresponding to SM-NSSAI=100 is a network slice VA for low service service, which satisfies the planned bandwidth limit of 15 Mbps, and the planned delay is 200 ms. The network slice corresponding to SM-NSSAI=200 is a network slice VB for high-service services, which satisfies the planned bandwidth limit of 900 Mbps and the planned delay of 15 ms. The network slice corresponding to SM-NSSAI=300 is a network slice VC for other service services, which satisfies the planned bandwidth limit of 10 Mbps, and the planned delay is 500 ms.

基于上述配置，第二 SSF接收所述条件信息后，所述第二 SSF选择满足所述条件信息的第一网络切片，并将所述第一网络切片的切片信息发送给所述第一 SSF。其中，所述切片信息可以包括第一网络切片对应的第一切片选择辅助信息 SM-NSSAI和 /或第一网络切片所满足的 QoS信息。 After the second SSF receives the condition information, the second SSF selects a first network slice that satisfies the condition information, and sends the slice information of the first network slice to the first SSF. The slice information may include first slice selection assistance information SM-NSSAI corresponding to the first network slice and/or QoS information that is satisfied by the first network slice.

一种应用场景下，所述切片信息包括所述第一 SM-NSSAI, 即第二 SSF才艮据所述条件信息确定满足第一网络切片后，根据 SM-NSSAI中对于网络切片的定义，确定第一网络切片的 SM-NSSAI, 从而将第一网络切片的 SM-NSSAI发送给第一 SSF。则在步骤 S305, 所述第一 SSF基于所述第一网络切片的切片信息为所述终端设备选择第二网络切片，可以通过如下方式实现： In an application scenario, the slice information includes the first SM-NSSAI, that is, the second SSF determines that the first network slice is satisfied according to the condition information, and determines according to the definition of the network slice in the SM-NSSAI. The SM-NSSAI of the first network slice, thereby transmitting the SM-NSSAI of the first network slice to the first SSF. Then, in step S305, the first SSF selects a second network slice for the terminal device based on the slice information of the first network slice, which can be implemented as follows:

上述 SM-NSSAI映射关系可以预先配置在归属地以及拜访地的 SSF中。以表 1和表 2 为例，则配置的 SM-NSSAI映射关系，参见图 4以及表 3所示，可以为：表 3 The above SM-NSSAI mapping relationship may be pre-configured in the home location and the visited SSF. Take Table 1 and Table 2 as examples. The SM-NSSAI mapping relationship, as shown in Figure 4 and Table 3, can be: Table 3

其中， SM-NSSAI-H表示归属地 HPLMN 的 SM-NSSAI, SM-NSSAI-V表示拜访地 VPLMN的 SM-NSSAL HPLMN 的 SM-NSSAI 和 VPLMN 的 SM-NSSAI 之间的映射关系，用来通过 SM-NSSAI-H选择 SM-NSSAI-V。 SM-NSSAI映射关系可以配置到 VPLMN和 HPLMN的 SSF上。

Where SM-NSSAI-H represents the SM-NSSAI of the home HPLMN, SM-NSSAI-V represents the SM-NSSAL of the visited VPLMN The mapping between the SM-NSSAI of the HPLMN and the SM-NSSAI of the VPLMN is used to select the SM-NSSAI-V through the SM-NSSAI-H. The SM-NSSAI mapping relationship can be configured on the SSF of the VPLMN and HPLMN.

具体的，可以在网络规划时，由 VPLMN和 HPLMN签订漫游协议，并根据各个 PLMN 的 QOS规划，对 VPLMN和 HPLMN的 SM-NSSAI进行映射得到 SM-NSSAI映射关系，然后分别配置在 VPLMN和 HPLMN的 SSF上。 Specifically, during the network planning, the VAMMN and the HPLMN may sign a roaming agreement, and according to the QOS plan of each PLMN, map the SM-NSSAI of the VPLMN and the HPLMN to obtain an SM-NSSAI mapping relationship, and then configure the VPLMN and the HPLMN respectively. On the SSF.

除了精确的映射，还可以配置缺省的 SM-NSSAI-V, 当其他规则无法匹配到的时候可以作为缺省选择。例如 SM-NSSAI-H既不是 1也不是 2时， SM-NSSAI-V使用 300。 In addition to the exact mapping, you can also configure the default SM-NSSAI-V, which can be used as the default when other rules cannot be matched. For example, when SM-NSSAI-H is neither 1 nor 2, SM-NSSAI-V uses 300.

具体的，所述第一 SSF确定所述 SM-NSSAI映射关系中不存在所述第一 SM-NSSAI 对应的 SM-NSSAI时，为所述终端设备选择第三网络切片。 Specifically, when the first SSF determines that the SM-NSSAI corresponding to the first SM-NSSAI does not exist in the SM-NSSAI mapping relationship, the third network slice is selected for the terminal device.

在另一种应用场景中，在所述切片信息包括第一网络切片的第一 SM-NSSAI时，还可以包括第一网络切片所满足的 QoS信息。即第二 SSF根据所述条件信息确定满足第一网络切片后，根据 SM-NSSAI中对于网络切片的定义，确定第一网络切片的 SM-NSSAI, 并确定第一网络切片所满足的 QoS信息。从而将第一网络切片的 SM-NSSAI以及 QoS信息发送给第一 SSF。 In another application scenario, when the slice information includes the first SM-NSSAI of the first network slice, the QoS information that is satisfied by the first network slice may also be included. That is, after the second SSF determines that the first network slice is satisfied according to the condition information, the SM-NSSAI of the first network slice is determined according to the definition of the network slice in the SM-NSSAI, and the QoS information satisfied by the first network slice is determined. Thereby, the SM-NSSAI of the first network slice and the QoS information are sent to the first SSF.

从而，所述第一 SSF确定所述 SM-NSSAI映射关系中不存在所述第一 SM-NSSAI对应的 SM-NSSAI时，所述第一 SSF在所述 VPLMN中选择满足所述第一网络切片所满足的 QoS信息的第二网络切片。 When the first SSF determines that the SM-NSSAI corresponding to the first SM-NSSAI does not exist in the SM-NSSAI mapping relationship, the first SSF selects to satisfy the first network slice in the VPLMN. A second network slice of the QoS information that is satisfied.

在又一种应用场景中，在所述切片信息包括所述第一网络切片所满足的 QoS信息。即第二 SSF根据所述条件信息确定满足第一网络切片后，确定第一网络切片所满足的 QoS 信息。从而将第一网络切片的 QoS信息发送给第一 SSF。从而所述第一 SSF基于所述第一网络切片的切片信息在所述 VPLMN中为所述终端设备选择第二网络切片时，可以通过如下方式实现： In still another application scenario, the slice information includes QoS information that is satisfied by the first network slice. That is, after determining that the first network slice is satisfied, the second SSF determines, according to the condition information, the QoS information that is satisfied by the first network slice. Thereby, the QoS information of the first network slice is sent to the first SSF. Therefore, when the first SSF selects the second network slice for the terminal device in the VPLMN based on the slice information of the first network slice, the first SSF may be implemented as follows:

所述第一 SSF在所述 VPLMN中选择满足所述第一网络切片所满足的 QoS信息的第二网络切片。 The first SSF selects, in the VPLMN, a second network slice that satisfies QoS information satisfied by the first network slice.

在一种可能的实现方式中，所述第一 SSF在确定所述 VPLMN中的网络切片均不满足所述第一网络切片所满足的 QoS信息时，即确定没有满足所述第一网络切片所满足的 QoS 信息时，还可以向切片管理***发送反馈信息，所述反馈信息用于通知管理员所述 VPLMN 中的网络切片无法满足所述终端设备的业务需求，即通知管理员没有满足所述终端设备的业务需求的网络切片。从而管理员可以规划一个网络切片，或者切片管理***根据预配置的策略自动生成一个网络切片。其中，反馈信息中可以包括所述终端设备的标识信息、 VPLMN的标识信息、 HPLMN的标识、归属地的 SM-NSSAI以及 QoS信息等等。 In a possible implementation manner, when determining that the network slice in the VPLMN does not satisfy the QoS information that is satisfied by the first network slice, the first SSF determines that the first network slice is not satisfied. When the QoS information is satisfied, the feedback information may be sent to the slice management system, where the feedback information is used to notify the administrator that the network slice in the VPLMN cannot meet the service requirement of the terminal device, that is, the notification administrator does not meet the requirement. A network slice of the business requirements of the terminal device. Thus the administrator can plan a network slice or the slice management system automatically generates a network slice based on the pre-configured policy. The feedback information may include the identifier information of the terminal device, the identifier information of the VPLMN, the identifier of the HPLMN, the SM-NSSAI of the home location, and QoS information.

下面结合具体应用场景对本申请实施例作具体描述。具体的针对在选择网络切片中的公共 CP之后，选择网络切片中特定 CP的过程进行描述。 The embodiments of the present application are specifically described below in conjunction with specific application scenarios. Specifically, the process of selecting a specific CP in the network slice is described after selecting a public CP in the network slice.

下面在描述时，以归属地 SM-NSSAI配置为表 1、拜访地 SM-NSSAI的配置为表 2, 以及 SM-NSSAI映射关系为图 3所示为例说明。为了清楚表述归属地的网元以及拜访地的网络，将前面带 V的表示拜访地的网元，例如 V.SSF表示拜访地的 SSF。将前面带 H的表示归属地的 SSF。参见图 5所示，本申请实施例提供的一种网络切片的选择方法流程示意图，以终端设备附着到 VPLMN为例。 In the following description, the configuration of the home SM-NSSAI is shown in Table 1, the configuration of the visited SM-NSSAI is Table 2, and the SM-NSSAI mapping relationship is shown in FIG. In order to clearly describe the network element of the home location and the network of the visited place, the network element indicating the visited place with V in front, for example, V.SSF indicates the SSF of the visited place. The SSF indicating the home location with H in front. As shown in FIG. 5, a schematic flowchart of a method for selecting a network slice according to an embodiment of the present application is as follows.

5501 , 终端设备接入 VPLMN, 发起附着请求（attach request )到 VPLMN的接入网设备 V.AN„ 5501, the terminal device accesses the VPLMN, and initiates an attach request (attach request) to the access network device of the VPLMN. V.AN„

5502, V.AN在 VPLMN中针对终端设备选择公共 CP功能（ CCNF ), 即选择 V.AMF。 5502, V.AN selects the common CP function (CCNF) for the terminal device in the VPLMN, that is, selects V.AMF.

5503 , V.AN将所述附着请求转发给 V.AMF,从而 V.AMF基于所述附着请求进行移动管理处理。 5503. The V.AN forwards the attach request to the V.AMF, so that the V.AMF performs mobility management processing based on the attach request.

5504, V.AMF向 V.HSS获取签约、鉴权信息。签约、鉴权信息中包括用户签约服务质量（英文： quality of Service, 筒称： QoS )信息等。 5504, V.AMF obtains contract and authentication information from V.HSS. The signing and authentication information includes the quality of the service (English: quality of service, QoS).

5505, V.AMF向 V.SSF发起切片选择请求（ Slice Select Request )。所述切片选择请求中包括所请求的网络切片应满足的条件信息，其中，条件信息中可以包括以下信息中的至少一种：所述终端设备的标识信息，终端设备的用户信息，业务类型，用户签约服务质量 5505, V.AMF initiates a Slice Select Request to the V.SSF. The slice selection request includes the condition information that the requested network slice should satisfy, where the condition information may include at least one of the following information: the identification information of the terminal device, the user information of the terminal device, the service type, User contracted service quality

(英文: quality of Service, 筒称： QoS )信息, 请求的网络切片的 SM-NSSAI。 (English: quality of Service, nickname: QoS) information, SM-NSSAI of the requested network slice.

5506, V.SSF向 H.SSF发送切片选择请求（ Slice Select Request )。 5506. The V.SSF sends a Slice Select Request to the H.SSF.

5507, H.SSF根据切片选择请求中的条件信息进行切片选择（选择归属地的 SM )。比如选择的网络切片为切片 HB , SM-NSSAI-H为 100,切片 HB对应的 QoS 信息为 <lGbps, 10ms, >。 5507. The H.SSF performs slice selection according to the condition information in the slice selection request (selecting the SM of the home location). For example, the selected network slice is slice HB, SM-NSSAI-H is 100, and the QoS information corresponding to slice HB is <lGbps, 10ms, >.

5508, H.SSF向 V.SSF返回选择的网络切片的切片信息。其中，切片信息中可以包括 SM-NSSAI-H为 100, 网络切片对应的 QoS信息为 <lGbps, 10ms, ... ... >等。 5508. The H.SSF returns the slice information of the selected network slice to the V.SSF. The slice information may include SM-NSSAI-H being 100, and the QoS information corresponding to the network slice is <1 Gbps, 10 ms, ..., and the like.

具体的， H.SSF 向 V.SSF发送切片选择响应（Slice Select Response )„ Slice Select Response包括选择的网络切片的切片信息。 Specifically, the H.SSF sends a slice selection response to the V.SSF. Slice Select Response includes slice information of the selected network slice.

5509, V.SSF在接收到 H.SSF返回的网络切片的切片信息后，根据切片信息确定网络切片的 SM-NSSAI-V。 After receiving the slice information of the network slice returned by the H.SSF, the V.SSF determines the SM-NSSAI-V of the network slice according to the slice information.

具体的，可以通过如下方式选择网络切片。 Specifically, the network slice can be selected as follows.

第一种实现方式： The first way to achieve:

在 V.SSF上配置有表 3所示的 SM-NSSAI映射关系时， V.SSF根据所述 SM-NSSAI映射关系确定 SM-NSSAI-H ( 100 )对应的 SM-NSSAI-V为 1。 When the SM-NSSAI mapping relationship shown in Table 3 is configured on the V.SSF, the V.SSF determines that the SM-NSSAI-V corresponding to the SM-NSSAI-H (100) is 1 according to the SM-NSSAI mapping relationship.

第二种实现方式： The second way to achieve:

在 V.SSF上没有配置表 3所示的 SM-NSSAI映射关系时， V.SSF根据 H.SSF返回的 QoS信息 <lGbps, 10ms, ... ... >在本地的网络切片中进行匹配，匹配得到 SM-NSSAI-V为 When the SM-NSSAI mapping relationship shown in Table 3 is not configured on the V.SSF, the V.SSF performs matching in the local network slice according to the QoS information returned by the H.SSF <1 Gbps, 10 ms, ... , match to get SM-NSSAI-V as

1的网络切片。 1 network slice.

第三种实现方式： The third way to achieve:

在 V.SSF上没有配置漫游 SM-NSSAI映射关系，根据 H.SSF返回的 QoS信息 <lGbps, 10ms, ... ... >在本地的网络切片中进行匹配得不到匹配的网络切片，可以通过管理接口发送通知消息到切片管理***，从而通知管理员存在无法满足体验要求的漫入用户。 The roaming SM-NSSAI mapping relationship is not configured on the V.SSF, and the matching network slice is matched in the local network slice according to the QoS information returned by the H.SSF <1 Gbps, 10 ms, ... The notification message can be sent to the slice management system through the management interface, thereby notifying the administrator that there are users who cannot meet the experience requirements.

通知消息中可以携带终端设备的 ID, VPLMN, HPLMN, SM-NSSAI-H, QoS信息等。 The notification message may carry the ID of the terminal device, VPLMN, HPLMN, SM-NSSAI-H, QoS information, and the like.

5510, V.SSF选择 SM-NSSAI-V对应的网络切片中满足要求的 V.SM。具体的，根据终端设备对应的用户签约 QoS , 本地策略，映射或者匹配到的备选 SM-NSSAI等信息，确定选择的网络切片中满足要求的 V.SM, 并将 V.SM的信息返回给 V.AMF。其中， V.SSF可以向 PCRF中获取本地策略。 5510, V.SSF selects the V.SM that satisfies the requirements in the network slice corresponding to SM-NSSAI-V. Specifically, according to the user's subscription QoS, local policy, mapping, or matching candidate SM-NSSAI corresponding to the terminal device, The V.SM that meets the requirements in the selected network slice is returned, and the V.SM information is returned to V.AMF. The V.SSF can obtain a local policy from the PCRF.

S511 , 执行 SM信令的后续过程。 S511. Perform a subsequent process of SM signaling.

基于与方法实施例同样的发明构思，本申请实施例提供了一种网络切片的选择装置，所述装置可以应用于 VPLMN的第一 SSF,或者应用于在 VPLMN中用于切片选择的设备，参见图 6所示，所述装置包括： Based on the same inventive concept as the method embodiment, the embodiment of the present application provides a network slice selection apparatus, where the apparatus may be applied to a first SSF of a VPLMN or to a device for slice selection in a VPLMN, see As shown in FIG. 6, the device includes:

接收单元 601 , 用于接收切片选择请求，所述切片选择请求用于请求为漫游的终端设备选择网络切片，所述切片选择请求中包括所请求的网络切片应满足的条件信息； The receiving unit 601 is configured to receive a slice selection request, where the slice selection request is used to request to select a network slice for the roaming terminal device, where the slice selection request includes condition information that the requested network slice should satisfy;

发送单元 602, 用于将所述条件信息发送给所述终端设备的归属公共陆地移动网络 HPLMN; The sending unit 602 is configured to send the condition information to the home public land mobile network HPLMN of the terminal device;

具体的，发送单元 602将所述条件信息发送到所述终端设备的归属公共陆地移动网络 HPLMN。所述终端设备的归属公共陆地移动网络 HPLMN 中网络切片的选择装置接收到该条件信息后，确定满足该条件信息的第一网络切片，并通过归属公共陆地移动网络 HPLMN发送 VPLMN的网络切片的选择装置。 Specifically, the sending unit 602 sends the condition information to the home public land mobile network HPLMN of the terminal device. After receiving the condition information, the selecting device of the network slice in the home public mobile mobile network HPLMN of the terminal device determines the first network slice that satisfies the condition information, and sends the network slice selection of the VPLMN through the home public land mobile network HPLMN. Device.

所述接收单元 601 , 还用于接收所述 HPLMN发送的满足所述条件信息的第一网络切片的切片信息。 The receiving unit 601 is further configured to receive slice information of the first network slice that is sent by the HPLMN and that meets the condition information.

具体的，接收单元 601接收从 HPLMN发来的满足所述条件信息的第一网络切片的切片信息。 Specifically, the receiving unit 601 receives the slice information of the first network slice that is sent from the HPLMN and satisfies the condition information.

选择单元 603 , 用于基于所述第一网络切片的切片信息在所述 VPLMN中为所述终端设备选择第二网络切片。 The selecting unit 603 is configured to select, in the VPLMN, a second network slice for the terminal device based on the slice information of the first network slice.

在一种可能的设计中，在所述切片信息包括所述第一 SM-NSSAI时，所述选择单元 603 , 具体用于基于预配置的 SM-NSSAI 映射关系，确定所述第一 SM-NSSAI 对应的第二 SM-NSSAI, 所述第二 SM-NSSAI归属于所述第二网络切片。 In a possible design, when the slice information includes the first SM-NSSAI, the selecting unit 603 is specifically configured to determine the first SM-NSSAI based on a pre-configured SM-NSSAI mapping relationship. Corresponding second SM-NSSAI, the second SM-NSSAI is attributed to the second network slice.

在一种可能的设计中，所述选择单元 603 , 还用于确定所述 SM-NSSAI映射关系中不存在所述第一 SM-NSSAI对应的 SM-NSSAI时，为所述终端设备选择第三网络切片。 In a possible design, the selecting unit 603 is further configured to: when the SM-NSSAI corresponding to the first SM-NSSAI does not exist in the SM-NSSAI mapping relationship, select a third terminal for the terminal device. Network slicing.

在一种可能的设计中，在所述切片信息还包括第一网络切片所满足的 QoS信息时，所述选择单元 603 , 还用于确定所述 SM-NSSAI映射关系中不存在所述第一 SM-NSSAI对应的 SM-NSSAI时，所述第一 SSF选择满足所述第一网络切片所满足的 QoS信息的第二网络切片。 In a possible design, when the slice information further includes QoS information that is satisfied by the first network slice, the selecting unit 603 is further configured to determine that the first part does not exist in the SM-NSSAI mapping relationship. When the SM-NSSAI corresponds to the SM-NSSAI, the first SSF selects a second network slice that satisfies the QoS information that the first network slice satisfies.

在一种可能的设计中，在所述切片信息包括所述第一网络切片所满足的 QoS信息时，所述选择单元 603 ,还用于选择满足所述第一网络切片所满足的 QoS信息的第二网络切片。 In a possible design, when the slice information includes QoS information that is satisfied by the first network slice, the selecting unit 603 is further configured to select that the QoS information that is satisfied by the first network slice is selected. The second network slice.

在一种可能的设计中，所述发送单元 602, 还用于在确定没有满足所述第一网络切片所满足的 QoS信息时，向切片管理***发送反馈信息，所述反馈信息用于通知管理员没有满足所述终端设备的业务需求的网络切片。 In a possible design, the sending unit 602 is further configured to: when determining that the QoS information that is satisfied by the first network slice is not met, send feedback information to the slice management system, where the feedback information is used for notification management. No A network slice that satisfies the service requirements of the terminal device.

本申请实施例中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，另外，在本申请各个实施例中的各功能单元可以集成在一个处理器中，也可以是单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以釆用硬件的形式实现，也可以釆用软件功能单元的形式实现。 The division of the unit in the embodiment of the present application is schematic, and is only a logical function division. In actual implementation, there may be another division manner. In addition, each functional unit in each embodiment of the present application may be integrated into one processing. In the device, it may be physically present alone, or two or more units may be integrated in one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

如图 7所示，应用于 VPLMN中网络切片的选择装置可以包括通信接口 710、处理器 720 以及存储器 730。上述图 6所示的单元对应的实体的硬件可以为处理器 720。处理器 720通过通信接口 710收发数据，并用于实现图 3、图 5中所述的第一 SSF ( V.SSF )所执行的方法。在实现过程中，处理流程的各步骤可以通过处理器 720中的硬件的集成逻辑电路或者软件形式的指令完成。处理器 720可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件单元组合执行完成。处理器 720用于实现上述方法所执行的程序代码可以存储在存储器 730中。存储器 730可以是非易失性存储器，比如硬盘（英文： hard disk drive,缩写： HDD )或固态硬盘（英文： solid-state drive, 缩写： SSD )等，还可以是易失性存储器（英文： volatile memory ), 例如随机存取存储器（英文： random-access memory, 缩写： RAM )。存储器 730是能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。 As shown in FIG. 7, the selection means applied to the network slice in the VPLMN may include a communication interface 710, a processor 720, and a memory 730. The hardware of the entity corresponding to the unit shown in FIG. 6 above may be the processor 720. The processor 720 transmits and receives data through the communication interface 710 and is used to implement the method performed by the first SSF (V.SSF) described in FIG. 3 and FIG. In an implementation process, the various steps of the processing flow may be accomplished by integrated logic circuitry of the hardware in processor 720 or by instructions in software. The processor 720 can be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or a transistor logic device, a discrete hardware component, and can be implemented or executed in the embodiment of the present application. Various methods, steps, and logical block diagrams of the disclosure. The general purpose processor can be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented as hardware processor execution completion, or performed by a combination of hardware and software units in the processor. The program code executed by the processor 720 for implementing the above method may be stored in the memory 730. The memory 730 may be a non-volatile memory, such as a hard disk drive (English: hard disk drive, abbreviated as HDD) or a solid state drive (English: solid-state drive, abbreviation: SSD), or a volatile memory (English: volatile Memory ), such as random access memory (English: random-access memory, abbreviation: RAM). Memory 730 is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.

本申请实施例中不限定上述通信接口 710、处理器 720以及存储器 730之间的具体连接介质。本申请实施例在图 7中以存储器 730、处理器 720以及通信接口 710之间通过总线 740连接，总线在图 7中以粗线表示，其它部件之间的连接方式，仅是进行示意性说明，并不引以为限。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图 7 中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。 The specific connection medium between the communication interface 710, the processor 720, and the memory 730 is not limited in the embodiment of the present application. In the embodiment of the present application, the memory 730, the processor 720, and the communication interface 710 are connected by a bus 740 in FIG. 7. The bus is indicated by a thick line in FIG. 7, and the connection manner between other components is only schematically illustrated. , not limited to. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 7, but it does not mean that there is only one bus or one type of bus.

本申请实施例提供了一种网络切片的选择装置，所述装置应用于 HPLMN的第二 SSF, , 或者应用于在 HPLMN中用于切片选择的设备，参见图 8所示，所述装置包括： The embodiment of the present application provides a device for selecting a network slice, the device is applied to a second SSF of the HPLMN, or applied to a device for slice selection in the HPLMN. Referring to FIG. 8, the device includes:

接收单元 801 , 用于接收拜访公共陆地移动网络的 VPLMN发送的、且用于为漫游的终端设备选择网络切片的条件信息； The receiving unit 801 is configured to receive condition information that is sent by the VPLMN that visits the public land mobile network and is used to select a network slice for the roaming terminal device.

选择单元 802 , 用于选择满足所述条件信息的第一网络切片； a selecting unit 802, configured to select a first network slice that satisfies the condition information;

发送单元 803 , 用于将所述选择单元 802选择的所述第一网络切片的切片信息发送给所述第一 SSF, 以使得所述 VPLMN基于所述第一网络切片的切片信息为所述终端设备选择第二网络切片。 The sending unit 803 is configured to send the slice information of the first network slice selected by the selecting unit 802 to the first SSF, so that the VPLMN is based on the slice information of the first network slice as the terminal The device selects the second network slice.

如图 9所示，应用于 HPLMN中的网络切片的选择装置可以包括通信接口 910、处理器 920以及存储器 930。上述图 8所示的单元对应的实体的硬件可以为处理器 920。处理器 920通过通信接口 910收发数据，并用于实现图 3、图 5中所述的第二 SSF ( H.SSF )所执行的方法。在实现过程中，处理流程的各步骤可以通过处理器 920中的硬件的集成逻辑电路或者软件形式的指令完成。处理器 920可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件单元组合执行完成。处理器 920用于实现上述方法所执行的程序代码可以存储在存储器 930中。存储器 930可以是非易失性存储器，比如 HDD或 SSD等，还可以是易失性存储器，例如 RAM。存储器 930是能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质 , 但不限于此。 As shown in FIG. 9, the selection means applied to the network slice in the HPLMN may include a communication interface 910, a processor 920, and a memory 930. The hardware of the entity corresponding to the unit shown in FIG. 8 above may be the processor 920. deal with The 920 transmits and receives data through the communication interface 910 and is used to implement the method performed by the second SSF (H.SSF) described in FIG. 3 and FIG. 5. In the implementation process, each step of the processing flow may be completed by an integrated logic circuit of hardware in the processor 920 or an instruction in the form of software. The processor 920 can be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or a transistor logic device, a discrete hardware component, and can be implemented or executed in the embodiment of the present application. Various methods, steps, and logical block diagrams of the disclosure. A general purpose processor can be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented as hardware processor execution completion, or performed by a combination of hardware and software units in the processor. The program code executed by the processor 920 for implementing the above method may be stored in the memory 930. The memory 930 may be a non-volatile memory such as an HDD or SSD or the like, or may be a volatile memory such as a RAM. Memory 930 is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.

本申请实施例中不限定上述通信接口 910、处理器 920以及存储器 930之间的具体连接介质。本申请实施例在图 9中以存储器 930、处理器 920以及通信接口 910之间通过总线 940连接，总线在图 9中以粗线表示，其它部件之间的连接方式，仅是进行示意性说明，并不引以为限。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图 9 中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。 The specific connection medium between the communication interface 910, the processor 920, and the memory 930 is not limited in the embodiment of the present application. In the embodiment of the present application, the memory 930, the processor 920, and the communication interface 910 are connected by a bus 940 in FIG. 9. The bus is indicated by a thick line in FIG. 9, and the connection manner between other components is only schematically illustrated. , not limited to. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 9, but it does not mean that there is only one bus or one type of bus.

本领域内的技术人员应明白，本申请的实施例可提供为方法、 ***、或计算机程序产品。因此，本申请可釆用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可釆用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质（包括但不限于磁盘存储器、 CD-ROM、光学存储器等）上实施的计算机程序产品的形式。 Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Thus, the application can be in the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the application can be embodied in the form of a computer program product embodied on one or more computer-usable storage media, including but not limited to disk storage, CD-ROM, optical storage, and the like.

本申请是参照根据本申请的方法、设备（***）、和计算机程序产品的流程图和 /或方框图来描述的。应理解可由计算机程序指令实现流程图和 /或方框图中的每一流程和 / 或方框、以及流程图和 /或方框图中的流程和 /或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的装置。 The present application is described with reference to flowchart illustrations and/or block diagrams of the method, apparatus (system), and computer program product according to the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能。 The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的步骤。 These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。 It will be apparent to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the present invention.

Claims

权利要求 Rights request

1、一种网络切片的选择方法，其特征在于，包括： A method for selecting a network slice, which is characterized by comprising:

拜访公共陆地移动网络 VPLMN的第一切片选择功能 SSF接收切片选择请求，所述切片选择请求用于请求所述第一 SSF为漫游的终端设备选择网络切片，所述切片选择请求中包括所请求的网络切片应满足的条件信息； The first slice selection function SSF of the public land mobile network VPLMN receives a slice selection request, and the slice selection request is used to request the first SSF to select a network slice for the roaming terminal device, where the slice selection request includes the requested Conditional information that the network slice should satisfy;

所述第一 SSF将所述条件信息发送给所述终端设备的归属公共陆地移动网络 HPLMN的第二 SSF; Sending, by the first SSF, the condition information to a second SSF of the home public land mobile network HPLMN of the terminal device;

所述第一 SSF接收所述第二 SSF发送的满足所述条件信息的第一网络切片的切片信息; 所述第一 SSF基于所述第一网络切片的切片信息为所述终端设备选择第二网络切片。 1、如权利要求 1 所述的方法，其特征在于，所述条件信息中包括以下信息中的至少一种： The first SSF receives the slice information of the first network slice that meets the condition information that is sent by the second SSF; the first SSF selects the second device for the terminal device based on the slice information of the first network slice. Network slicing. 1. The method according to claim 1, wherein the condition information includes at least one of the following information:

3、如权利要求 1或 1所述的方法，其特征在于，所述切片信息包括第一网络切片对应的第一会话管理网络切片选择辅助信息 SM-NSSAI和 /或第一网络切片所满足的 QoS信息。 The method according to claim 1 or 1, wherein the slice information includes the first session management network slice selection assistance information SM-NSSAI corresponding to the first network slice and/or the first network slice satisfies QoS information.

4、如权利要求 3所述的方法，其特征在于，在所述切片信息包括所述第一 SM-NSSAI 时，所述第一 SSF基于所述第一网络切片的切片信息为所述终端设备选择第二网络切片，包括： The method according to claim 3, wherein, when the slice information includes the first SM-NSSAI, the first SSF is based on the slice information of the first network slice as the terminal device Select the second network slice, including:

所述第一 SSF基于预配置的 SM-NSSAI映射关系，确定所述第一 SM-NSSAI对应的第二 SM-NSSAI , 所述第二 SM-NSSAI归属于所述第二网络切片。 The first SSF determines, according to the pre-configured SM-NSSAI mapping relationship, a second SM-NSSAI corresponding to the first SM-NSSAI, and the second SM-NSSAI belongs to the second network slice.

5、如权利要求 4所述的方法，其特征在于，所述方法还包括： The method of claim 4, wherein the method further comprises:

所述第一 SSF 确定所述 SM-NSSAI 映射关系中不存在所述第一 SM-NSSAI 对应的 SM-NSSAI时，为所述终端设备选择第三网络切片。 When the first SSF determines that the SM-NSSAI corresponding to the first SM-NSSAI does not exist in the SM-NSSAI mapping relationship, the third network slice is selected for the terminal device.

6、如权利要求 4 所述的方法，其特征在于，在所述切片信息还包括第一网络切片所满足的 QoS信息时，所述方法还包括： The method according to claim 4, wherein, when the slice information further includes QoS information that is satisfied by the first network slice, the method further includes:

所述第一 SSF 确定所述 SM-NSSAI 映射关系中不存在所述第一 SM-NSSAI 对应的 SM-NSSAI时，所述第一 SSF选择满足所述第一网络切片所满足的 QoS信息的第二网络切片。 When the first SSF determines that the SM-NSSAI corresponding to the first SM-NSSAI does not exist in the SM-NSSAI mapping relationship, the first SSF selects the first QoS information that satisfies the first network slice. Two network slices.

7、如权利要求 3 所述的方法，其特征在于，在所述切片信息包括所述第一网络切片所满足的 QoS信息时，所述第一 SSF基于所述第一网络切片的切片信息为所述终端设备选择第二网络切片，包括： The method according to claim 3, wherein, when the slice information includes QoS information that is satisfied by the first network slice, the first SSF is based on slice information of the first network slice. The selecting, by the terminal device, the second network slice includes:

所述第一 SSF选择满足所述第一网络切片所满足的 QoS信息的第二网络切片。 The first SSF selects a second network slice that satisfies the QoS information that the first network slice satisfies.

8、如权利要求 6或 7所述的方法，其特征在于，所述方法还包括： The method according to claim 6 or 7, wherein the method further comprises:

9、一种网络切片的选择装置，其特征在于，包括：接收单元，用于接收切片选择请求，所述切片选择请求用于请求为漫游的终端设备选择网络切片，所述切片选择请求中包括所请求的网络切片应满足的条件信息； 9. A device for selecting a network slice, comprising: a receiving unit, configured to receive a slice selection request, where the slice selection request is used to request to select a network slice for the roaming terminal device, where the slice selection request includes condition information that the requested network slice should satisfy;

发送单元，用于将所述条件信息发送给所述终端设备的归属公共陆地移动网络 HPLMN; 所述接收单元，还用于接收所述 HPLMN发送的在所述 HPLMN中满足所述条件信息的第一网络切片的切片信息； a sending unit, configured to send the condition information to a home public land mobile network HPLMN of the terminal device, where the receiving unit is further configured to receive, by the HPLMN, a condition that satisfies the condition information in the HPLMN Slice information of a network slice;

选择单元，用于基于所述第一网络切片的切片信息为所述终端设备选择第二网络切片。 And a selecting unit, configured to select, according to the slice information of the first network slice, a second network slice for the terminal device.

10、如权利要求 9所述的装置，其特征在于，所述条件信息中包括以下信息中的至少一种： 10. The apparatus according to claim 9, wherein the condition information includes at least one of the following information:

11、如权利要求 9或 10所述的装置，其特征在于，所述切片信息包括第一网络切片对应的第一会话管理切片选择辅助信息 SM-NSSAI和 /或第一网络切片所满足的 QoS信息。 The apparatus according to claim 9 or 10, wherein the slice information comprises first session management slice selection assistance information SM-NSSAI corresponding to the first network slice and/or QoS satisfied by the first network slice information.

12、如权利要求 11所述的装置，其特征在于，在所述切片信息包括所述第一 SM-NSSAI 时，所述选择单元，具体用于基于预配置的 SM-NSSAI映射关系，确定所述第一 SM-NSSAI 对应的第二 SM-NSSAI , 所述第二 SM-NSSAI归属于所述第二网络切片。 The device according to claim 11, wherein, when the slice information includes the first SM-NSSAI, the selecting unit is specifically configured to determine, according to a pre-configured SM-NSSAI mapping relationship, The second SM-NSSAI corresponding to the first SM-NSSAI, the second SM-NSSAI is attributed to the second network slice.

13、如权利要求 12所述的装置，其特征在于，所述选择单元，还用于确定所述 SM-NSSAI 映射关系中不存在所述第一 SM-NSSAI对应的 SM-NSSAI时，为所述终端设备选择第三网络切片。 The apparatus according to claim 12, wherein the selecting unit is further configured to: when it is determined that the SM-NSSAI corresponding to the first SM-NSSAI does not exist in the SM-NSSAI mapping relationship, The terminal device selects a third network slice.

14、如权利要求 12 所述的装置，其特征在于，在所述切片信息还包括第一网络切片所满足的 QoS信息时，所述选择单元，还用于确定所述 SM-NSSAI映射关系中不存在所述第一 SM-NSSAI对应的 SM-NSSAI时，选择满足所述第一网络切片所满足的 QoS信息的第二网络切片。 The apparatus according to claim 12, wherein, when the slice information further includes QoS information that is satisfied by the first network slice, the selecting unit is further configured to determine the SM-NSSAI mapping relationship. When there is no SM-NSSAI corresponding to the first SM-NSSAI, a second network slice that satisfies the QoS information that is satisfied by the first network slice is selected.

15、如权利要求 11 所述的装置，其特征在于，在所述切片信息包括所述第一网络切片所满足的 QoS信息时，所述选择单元，还用于选择满足所述第一网络切片所满足的 QoS 信息的第二网络切片。 The device according to claim 11, wherein the selecting unit is further configured to select that the first network slice is satisfied when the slice information includes QoS information that is satisfied by the first network slice. A second network slice of the QoS information that is satisfied.

16、如权利要求 14或 15所述的装置，其特征在于，所述发送单元，还用于在确定没有满足所述第一网络切片所满足的 QoS信息时，向切片管理***发送反馈信息，所述反馈信息用于通知管理员没有满足所述终端设备的业务需求的网络切片。 The device according to claim 14 or 15, wherein the sending unit is further configured to: when determining that the QoS information that is satisfied by the first network slice is not met, send the feedback information to the slice management system, The feedback information is used to notify the administrator that the network slice does not satisfy the service requirement of the terminal device.