WO2021083033A1

WO2021083033A1 - Method and device for determining intermediate session management function i-smf

Info

Publication number: WO2021083033A1
Application number: PCT/CN2020/122958
Authority: WO
Inventors: 陶源; 侯云静; 王胡成
Original assignee: 大唐移动通信设备有限公司
Priority date: 2019-10-30
Filing date: 2020-10-22
Publication date: 2021-05-06
Also published as: CN112752352B; CN112752352A

Abstract

Disclosed in the present application are a method and a device for determining an intermediate session management function I-SMF, used for solving the problem of a session between a UE and MEC being affected due to a session management function being unable to control user plane function modules. The method of the present application is used on the application function AF side, and comprises: creating request information, the request information comprising mobile edge computing MEC application information, and the request information being used for instructing an access and mobility management function AMF or a session management function SMF when selecting I-SMF to select the I-SMF on the basis of the MEC application information; and sending the request information to a network exposure function NEF or a policy control function PCF. As the method for determining an intermediate session management function I-SMF of the present application creates request information instructing the AMF or SMF to select the I-SMF on the basis of MEC application information, a suitable I-SMF is selected for the MEC, ensuring the continuity of the session between the UE and the MEC.

Description

一种中间会话管理功能I-SMF确定方法和设备Method and equipment for determining I-SMF of intermediate session management function

相关申请的交叉引用Cross-references to related applications

本申请要求在2019年10月30日提交中国专利局、申请号为201911044845.X、申请名称为“一种中间会话管理功能I-SMF确定方法和设备”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。This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on October 30, 2019, the application number is 201911044845.X, and the application name is "a method and device for determining an intermediate session management function I-SMF", all of which The content is incorporated in this application by reference.

技术领域Technical field

本申请涉及通信技术领域，特别涉及一种中间会话管理功能I-SMF确定方法和设备。This application relates to the field of communication technology, and in particular to a method and device for determining an intermediate session management function I-SMF.

背景技术Background technique

移动边缘计算(Mobile Edge Computing，MEC)技术，通过将计算存储能力与业务服务能力向网络边缘迁移，尽可能实现不用将数据回传到云端，减少数据往返云端的等待时间和网络成本。基于5G的分布式云基础设施，在边缘云化构建5G用户面和5G MEC节点，5G MEC节点提供MEC应用平台实现对第三方应用的部署和管理能力。用户可通过MEC应用获得服务。Mobile Edge Computing (MEC) technology, by migrating computing storage capabilities and business service capabilities to the edge of the network, avoids sending data back to the cloud as much as possible, reducing the waiting time for data to and from the cloud and network costs. Based on the 5G distributed cloud infrastructure, 5G user planes and 5G MEC nodes are built at the edge of cloudification. 5G MEC nodes provide MEC application platforms to realize the deployment and management capabilities of third-party applications. Users can get services through the MEC application.

用户终端(User Equipment，UE)使用MEC服务时，若会话管理功能(Session Management Function，SMF)无法满足传输需求，需要选择一个合适的中间会话管理(Intermediate SMF，I-SMF)，支持MEC与UE之间的传输数据。When the user terminal (User Equipment, UE) uses the MEC service, if the Session Management Function (SMF) cannot meet the transmission requirements, a suitable intermediate session management (Intermediate SMF, I-SMF) needs to be selected to support MEC and UE Transfer data between.

在5G定义的I-SMF选择机制，现有技术的解决方案由接入与移动性管理功能(Access and Mobility Management Function，AMF)基于UE位置、SMF与I-SMF的服务区域信息为依据，决定是否***、更改或删除I-SMF，但现有解决方案因UE移动的因素，SMF无法控制用户面功能模块(User Plan Function，UPF)，导致UE与MEC之间会话受到影响，不能实现为MEC选择合适的I-SMF。In the I-SMF selection mechanism defined in 5G, the existing technical solution is determined by the Access and Mobility Management Function (AMF) based on the UE location, SMF and I-SMF service area information Whether to insert, change or delete the I-SMF, but the existing solution due to the UE movement, SMF cannot control the User Plan Function (UPF), which affects the session between UE and MEC and cannot be implemented as MEC Choose the appropriate I-SMF.

发明内容Summary of the invention

本申请提供一种中间会话管理功能I-SMF确定方法和设备，用以解决因会话管理功能SMF不能控制用户面功能模块UPF，导致的用户设备UE与MEC之间会话受到影响的问题，实现为MEC选择合适的I-SMF。This application provides a method and device for determining an intermediate session management function I-SMF to solve the problem that the session between the user equipment UE and the MEC is affected due to the session management function SMF being unable to control the user plane function module UPF, which is implemented as MEC selects the appropriate I-SMF.

第一方面，本申请实施例提供的一种中间会话管理功能I-SMF确定方法，应用于应用功能(Application Function，AF)侧，该方法包括：In the first aspect, an intermediate session management function I-SMF determination method provided by an embodiment of the present application is applied to the application function (Application Function, AF) side, and the method includes:

创建请求信息，请求信息中包含移动边缘计算MEC应用信息，请求信息用于指示接入与移动性管理AMF或者会话管理功能SMF在选择I-SMF时，基于MEC应用信息选择I-SMF；Create request information. The request information contains mobile edge computing MEC application information. The request information is used to instruct access and mobility management AMF or session management function SMF to select I-SMF based on MEC application information when selecting I-SMF;

向网络开放功能(Network Exposure Function，NEF)或者策略控制功能(Policy Control Function，PCF)发送请求信息。Send request information to the Network Exposure Function (NEF) or the Policy Control Function (PCF).

上述方法，由AF创建的包含移动边缘计算MEC应用信息，指示AMF或SMF基于MEC应用信息选择I-SMF，使AMF或SMF在选择合适的I-SMF时，依据MEC应用信息进行选择，保证UE与MEC之间的会话和服务的连续性。In the above method, the mobile edge computing MEC application information created by the AF instructs the AMF or SMF to select the I-SMF based on the MEC application information, so that the AMF or SMF selects the appropriate I-SMF based on the MEC application information to ensure that the UE Continuity of sessions and services with MEC.

在一种可能的实现方式中，MEC应用信息包括以下一种或多种：MEC对应的数据网接入标识符(Data Network Access Identifier，DNAI)、MEC服务器地址、MEC应用服务器地址、MEC应用属性信息；In a possible implementation, the MEC application information includes one or more of the following: Data Network Access Identifier (DNAI) corresponding to MEC, MEC server address, MEC application server address, MEC application attributes information;

其中，MEC应用属性信息包括MEC应用、MEC应用实例的分布、服务能力、服务类型、负载、生命周期。Among them, the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.

第二方面，本申请实施例提供的一种中间会话管理功能I-SMF确定方法，应用于策略控制功能PCF侧，该方法包括：In the second aspect, an intermediate session management function I-SMF determination method provided by an embodiment of the present application is applied to the PCF side of the policy control function, and the method includes:

获取应用功能AF发送的请求信息，请求信息中包含移动边缘计算MEC应用信息，请求信息用于指示接入与移动性管理AMF或者会话管理功能SMF在选择I-SMF时，基于MEC应用信息选择I-SMF；Obtain the request information sent by the application function AF. The request information contains the mobile edge computing MEC application information. The request information is used to indicate the access and mobility management AMF or the session management function SMF. When selecting I-SMF, select I based on the MEC application information -SMF;

根据请求信息，生成包含MEC应用信息的策略控制和计费(Policy Control Charging，PCC)规则；According to the request information, generate Policy Control Charging (PCC) rules containing MEC application information;

将PCC规则发送至会话管理功能SMF。Send the PCC rules to the session management function SMF.

上述方法，PCF根据获取的AF发送的请求信息，生成包含MEC应用信息的PCC规则，使SMF能够从PCC规则中获取MEC应用信息，在AMF或SMF在选择合适的I-SMF时，能够依据MEC应用信息进行选择，保证UE与MEC之间的会话和服务的连续性。In the above method, the PCF generates PCC rules containing MEC application information according to the request information sent by the acquired AF, so that SMF can obtain MEC application information from the PCC rules. When the AMF or SMF selects the appropriate I-SMF, it can be based on the MEC. Application information is selected to ensure the continuity of the session and service between the UE and the MEC.

在一种可能的实现方式中，MEC应用信息包括以下一种或多种：MEC对应的数据网接入标识符DNAI、MEC服务器地址、MEC应用服务器地址、MEC应用属性信息；In a possible implementation, the MEC application information includes one or more of the following: data network access identifier DNAI corresponding to the MEC, MEC server address, MEC application server address, and MEC application attribute information;

其中，MEC应用属性信息包括MEC应用、MEC应用实例的分布、服务能力、服务类型、负载、以及生命周期。Among them, the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.

第三方面，本申请实施例提供的一种中间会话管理功能I-SMF确定方法，应用于会话管理功能SMF侧，该方法包括：In the third aspect, an intermediate session management function I-SMF determination method provided by an embodiment of the present application is applied to the session management function SMF side, and the method includes:

接收策略控制功能PCF发送的PCC规则，PCC规则中包含移动边缘计算MEC应用信息；Receive the PCC rules sent by the policy control function PCF. The PCC rules contain mobile edge computing MEC application information;

在确定PCC规则中包含的MEC应用信息为第一类MEC应用信息时，基于第一类MEC应用信息，生成I-SMF选择指示信息，并将I-SMF选择指示信息发送至接入与移动性管理功能AMF，I-SMF选择指示信息用于指示AMF在选择I-SMF时基于第一类MEC应用信息确定I-SMF；When it is determined that the MEC application information contained in the PCC rule is the first type of MEC application information, based on the first type of MEC application information, I-SMF selection indication information is generated, and the I-SMF selection indication information is sent to Access and Mobility Management function AMF, I-SMF selection indication information is used to instruct AMF to determine I-SMF based on the first type of MEC application information when selecting I-SMF;

在确定PCC规则中包含的MEC应用信息为第二类MEC应用信息时，根据PCC规则中包含的第二类MEC应用信息在选择I-SMF时确定I-SMF，或者在包含第二类MEC应用信息的PCC规则中提取第二类MEC应用信息，将第二类MEC应用信息转发至接入与移动性管理功能AMF。When it is determined that the MEC application information contained in the PCC rule is the second type of MEC application information, the I-SMF is determined when the I-SMF is selected according to the second type of MEC application information contained in the PCC rule, or when the second type of MEC application is included The second type of MEC application information is extracted from the PCC rules of the information, and the second type of MEC application information is forwarded to the access and mobility management function AMF.

上述方法，SMF在接收的PCC规则中确定MEC应用信息，MEC应用信息为第一类MEC应用信息时，生成I-SMF选择指示信息，使AMF基于I-SMF选择指示信息，在选择I-SMF时，能够依据第一类MEC应用信息进行选择，保证UE与MEC之间的会话和服务的连续性，MEC应用信息为第二类MEC 应用信息时，SMF在选择I-SMF时能够根据第二类MEC应用信息确定I-SMF，保证UE与MEC之间的会话和服务的连续性。In the above method, the SMF determines the MEC application information in the received PCC rules. When the MEC application information is the first type of MEC application information, the I-SMF selection indication information is generated, so that the AMF selects the I-SMF based on the I-SMF selection indication information. When the MEC application information of the first type can be selected to ensure the continuity of the session and service between the UE and the MEC. When the MEC application information is the second type of MEC application information, the SMF can select the I-SMF based on the second type of MEC application information. The MEC-like application information determines the I-SMF to ensure the continuity of the session and service between the UE and the MEC.

在一种可能的实现方式中，第一类MEC应用信息为MEC对应的数据网接入标识符DNAI。In a possible implementation manner, the first type of MEC application information is the data network access identifier DNAI corresponding to the MEC.

在一种可能的实现方式中，第二类MEC应用信息包括以下一种或多种：MEC服务器地址、MEC应用服务器地址、MEC应用属性信息；In a possible implementation manner, the second type of MEC application information includes one or more of the following: MEC server address, MEC application server address, and MEC application attribute information;

第四方面，本申请实施例提供的一种中间会话管理功能I-SMF确定方法，应用于接入与移动性管理功能AMF侧，该方法包括：In a fourth aspect, an intermediate session management function I-SMF determination method provided by an embodiment of the present application is applied to the access and mobility management function AMF side, and the method includes:

接收会话管理功能SMF发送的I-SMF选择指示信息，I-SMF选择指示信息中包含第一类MEC应用信息；Receive the I-SMF selection indication information sent by the session management function SMF, where the I-SMF selection indication information contains the MEC application information of the first type;

根据第一类MEC应用信息在选择I-SMF时确定I-SMF。The I-SMF is determined when the I-SMF is selected according to the MEC application information of the first type.

上述方法，AMF基于接收的I-SMF选择指示信息中的第一类MEC应用信息，在选择I-SMF时，根据第一类MEC应用信息选择I-SMF，保证UE与MEC之间的会话和服务的连续性。In the above method, the AMF is based on the MEC application information of the first type in the received I-SMF selection indication information. When selecting the I-SMF, it selects the I-SMF according to the MEC application information of the first type to ensure that the session and the MEC between the UE and the MEC are selected. Continuity of service.

在一种可能的实现方式中，方法还包括：In a possible implementation, the method further includes:

接收SMF发送的第二类MEC应用信息；Receive the second type of MEC application information sent by SMF;

根据第二类MEC应用信息在选择I-SMF时确定I-SMF。The I-SMF is determined when the I-SMF is selected according to the second type of MEC application information.

上述方法，AMF基于接收的PCC规则中的第二类MEC应用信息，在选择I-SMF时，根据第二类MEC应用信息选择I-SMF，保证UE与MEC之间的会话和服务的连续性。In the above method, AMF is based on the second type of MEC application information in the received PCC rules, and when selecting I-SMF, it selects I-SMF according to the second type of MEC application information to ensure the continuity of the session and service between the UE and the MEC .

其中，MEC应用属性信息包括MEC应用、MEC应用实例的分布、服务能力、服务类型、负载、以及生命周期。Among them, MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.

第五方面，本申请实施例提供的一种中间会话管理功能I-SMF确定设备，应用于应用功能AF侧，该设备包括：处理器和存储器；In the fifth aspect, an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the application function AF side, and the device includes: a processor and a memory;

其中，处理器，用于读取存储器中的程序并执行下列过程：Among them, the processor is used to read the program in the memory and execute the following process:

向网络开放功能NEF或者策略控制功能PCF发送请求信息。Send the request information to the network opening function NEF or the policy control function PCF.

一种可能的实施方式中，MEC应用信息包括以下一种或多种：MEC对应的数据网接入标识符DNAI、MEC服务器地址、MEC应用服务器地址、MEC应用属性信息；In a possible implementation manner, the MEC application information includes one or more of the following: the data network access identifier DNAI corresponding to the MEC, the MEC server address, the MEC application server address, and the MEC application attribute information;

第六方面，本申请实施例提供的一种中间会话管理功能I-SMF确定设备，应用于策略控制功能PCF侧，该设备包括：处理器和存储器；In the sixth aspect, an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the PCF side of the policy control function, and the device includes: a processor and a memory;

根据请求信息，生成包含MEC应用信息的策略控制和计费PCC规则；According to the request information, generate policy control and charging PCC rules containing MEC application information;

第七方面，本申请实施例提供的一种中间会话管理功能I-SMF确定设备，应用于会话管理功能SMF侧，该设备包括：处理器和存储器；In a seventh aspect, an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the session management function SMF side, and the device includes: a processor and a memory;

一种可能的实施方式中，第一类MEC应用信息为MEC对应的数据网接入标识符DNAI。In a possible implementation manner, the first type of MEC application information is the data network access identifier DNAI corresponding to the MEC.

一种可能的实施方式中，第二类MEC应用信息包括以下一种或多种：MEC服务器地址、MEC应用服务器地址、MEC应用属性信息；In a possible implementation manner, the second type of MEC application information includes one or more of the following: MEC server address, MEC application server address, and MEC application attribute information;

第八方面，本申请实施例提供的一种中间会话管理功能I-SMF确定设备，应用于接入与移动性管理功能AMF侧，该设备包括：处理器和存储器；In an eighth aspect, an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the access and mobility management function AMF side, and the device includes: a processor and a memory;

一种可能的实施方式中，处理器还用于：In a possible implementation manner, the processor is also used to:

第九方面，本申请实施例提供的一种中间会话管理功能I-SMF确定设备，应用于应用功能AF侧，该设备包括处理模块和发送模块，其中，In the ninth aspect, an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the application function AF side. The device includes a processing module and a sending module, wherein:

处理模块，用于创建请求信息，请求信息中包含移动边缘计算MEC应用信息，请求信息用于指示接入与移动性管理AMF或者会话管理功能SMF在选择I-SMF时，基于MEC应用信息选择I-SMF；The processing module is used to create request information. The request information contains mobile edge computing MEC application information. The request information is used to indicate access and mobility management AMF or session management function SMF. When selecting I-SMF, select I based on MEC application information -SMF;

发送模块，用于向网络开放功能NEF或者策略控制功能PCF发送请求信息。The sending module is used to send request information to the network opening function NEF or the policy control function PCF.

第十方面，本申请实施例提供的一种中间会话管理功能I-SMF确定设备，应用于策略控制功能PCF侧，该设备包括获取模块，处理模块和发送模块，其中，In a tenth aspect, an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the PCF side of the policy control function. The device includes an acquisition module, a processing module, and a sending module, wherein:

获取模块，用于获取应用功能AF发送的请求信息，请求信息中包含移动边缘计算MEC应用信息，请求信息用于指示接入与移动性管理AMF或者会话管理功能SMF在选择I-SMF时，基于MEC应用信息选择I-SMF；The acquisition module is used to acquire the request information sent by the application function AF. The request information contains the mobile edge computing MEC application information. The request information is used to indicate the access and mobility management AMF or the session management function SMF when the I-SMF is selected based on MEC application information select I-SMF;

处理模块，用于根据请求信息，生成包含MEC应用信息的策略控制和计费PCC规则；The processing module is used to generate policy control and charging PCC rules containing MEC application information according to the request information;

发送模块，用于将PCC规则发送至会话管理功能SMF。The sending module is used to send the PCC rules to the session management function SMF.

第十一方面，本申请实施例提供的一种中间会话管理功能I-SMF确定设备，应用于会话管理功能SMF侧，该设备包括接收模块，第一处理模块和第二处理模块，其中，In an eleventh aspect, an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the session management function SMF side. The device includes a receiving module, a first processing module, and a second processing module, wherein:

接收模块，用于接收策略控制功能PCF发送的PCC规则，PCC规则中包含移动边缘计算MEC应用信息；The receiving module is used to receive the PCC rules sent by the policy control function PCF, and the PCC rules include mobile edge computing MEC application information;

第一处理模块，用于在确定PCC规则中包含的MEC应用信息为第一类MEC应用信息时，基于第一类MEC应用信息，生成I-SMF选择指示信息，并将I-SMF选择指示信息发送至接入与移动性管理功能AMF，I-SMF选择指示信息用于指示AMF在选择I-SMF时基于第一类MEC应用信息确定I-SMF；The first processing module is used to generate I-SMF selection indication information based on the first type of MEC application information when it is determined that the MEC application information contained in the PCC rule is the first type of MEC application information, and to set the I-SMF selection indication information Sent to the access and mobility management function AMF, the I-SMF selection indication information is used to instruct the AMF to determine the I-SMF based on the first type of MEC application information when selecting the I-SMF;

第二处理模块，用于在确定PCC规则中包含的MEC应用信息为第二类MEC应用信息时，根据PCC规则中包含的第二类MEC应用信息在选择I-SMF时确定I-SMF，或者在包含第二类MEC应用信息的PCC规则中提取第二类MEC应用信息，将第二类MEC应用信息转发至接入与移动性管理功能AMF。The second processing module is used to determine the I-SMF when the I-SMF is selected according to the second type of MEC application information contained in the PCC rule when it is determined that the MEC application information contained in the PCC rule is the second type of MEC application information, or Extract the second type of MEC application information from the PCC rules containing the second type of MEC application information, and forward the second type of MEC application information to the access and mobility management function AMF.

第十二方面，本申请实施例提供的一种中间会话管理功能I-SMF确定设备，应用于接入与移动性管理功能AMF侧，该设备包括第一接收模块和第一确定模块，其中，In the twelfth aspect, an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the access and mobility management function AMF side. The device includes a first receiving module and a first determining module, wherein:

第一接收模块，用于接收会话管理功能SMF发送的I-SMF选择指示信息，I-SMF选择指示信息中包含第一类MEC应用信息；The first receiving module is configured to receive the I-SMF selection indication information sent by the session management function SMF, and the I-SMF selection indication information includes the MEC application information of the first type;

第一确定模块，用于根据第一类MEC应用信息在选择I-SMF时确定I-SMF。The first determining module is configured to determine the I-SMF when selecting the I-SMF according to the MEC application information of the first type.

一种可能的实施方式中，设备还包括：In a possible implementation manner, the device further includes:

第二接收模块，用于接收SMF发送的第二类MEC应用信息；The second receiving module is configured to receive the second type of MEC application information sent by the SMF;

第二确定模块，用于根据第二类MEC应用信息在选择I-SMF时确定I-SMF。The second determining module is used to determine the I-SMF when selecting the I-SMF according to the second type of MEC application information.

第十三方面，本申请还提供一种计算机存储介质，其上存储有计算机程序，该程序被处理单元执行时实现第一方面、第二方面、第三方面或第四方面方法的步骤。In a thirteenth aspect, the present application also provides a computer storage medium on which a computer program is stored, and when the program is executed by a processing unit, the steps of the method of the first aspect, the second aspect, the third aspect, or the fourth aspect are realized.

另外，第五方面至第十二方面中任一种实现方式所带来的技术效果可参见第一方面、第二方面、第三方面、第四方面中不同实现方式所带来的技术效果，此处不再赘述。In addition, the technical effects brought by any one of the implementations of the fifth aspect to the twelfth aspect can be referred to the technical effects brought about by different implementations in the first, second, third, and fourth aspects. I won't repeat them here.

附图说明Description of the drawings

为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简要介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域的普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative labor, other drawings can be obtained based on these drawings.

图1为现有技术中边缘计算网络架构的结构示意图；Figure 1 is a schematic structural diagram of an edge computing network architecture in the prior art;

图2为本申请实施例提供的一种中间会话管理功能I-SMF确定方法的示意流程图；2 is a schematic flowchart of a method for determining an intermediate session management function I-SMF provided by an embodiment of the application;

图3为本申请实施例提供的又一种中间会话管理功能I-SMF确定方法的示意流程图；FIG. 3 is a schematic flowchart of another method for determining an intermediate session management function I-SMF provided by an embodiment of the application;

图4为本申请实施例提供的再一种中间会话管理功能I-SMF确定方法的示意流程图；FIG. 4 is a schematic flowchart of yet another method for determining an intermediate session management function I-SMF provided by an embodiment of the application;

图5为本申请实施例提供的应用于AF侧的中间会话管理功能I-SMF确定方法的示意流程图；5 is a schematic flowchart of a method for determining an intermediate session management function I-SMF applied to the AF side according to an embodiment of the application;

图6为本申请实施例提供的应用于PCF侧的中间会话管理功能I-SMF确定方法的示意流程图；6 is a schematic flowchart of a method for determining an intermediate session management function I-SMF applied to the PCF side according to an embodiment of the application;

图7为本申请实施例提供的应用于SMF侧的中间会话管理功能I-SMF确定方法的示意流程图；FIG. 7 is a schematic flowchart of a method for determining an intermediate session management function I-SMF applied to the SMF side according to an embodiment of the application;

图8为本申请实施例提供的应用于AMF侧的中间会话管理功能I-SMF确定方法的示意流程图；8 is a schematic flowchart of a method for determining an intermediate session management function I-SMF applied to the AMF side according to an embodiment of the application;

图9为本申请实施例提供的AF侧的中间会话管理功能I-SMF确定设备的结构示意图；FIG. 9 is a schematic structural diagram of an I-SMF determining device for an intermediate session management function on the AF side provided by an embodiment of the application;

图10为本申请实施例提供的PCF侧的中间会话管理功能I-SMF确定设备的结构示意图；FIG. 10 is a schematic structural diagram of an I-SMF determination device for an intermediate session management function on the PCF side provided by an embodiment of the application;

图11为本申请实施例提供的SMF侧的中间会话管理功能I-SMF确定设备的结构示意图；FIG. 11 is a schematic structural diagram of an I-SMF determining device for an intermediate session management function on the SMF side according to an embodiment of the application;

图12为本申请实施例提供的AMF侧的中间会话管理功能I-SMF确定设备的结构示意图；FIG. 12 is a schematic structural diagram of an I-SMF determining device for an intermediate session management function on the AMF side according to an embodiment of the application;

图13为本申请实施例提供的AF侧的中间会话管理功能I-SMF确定设备的结构示意图；FIG. 13 is a schematic structural diagram of an I-SMF determining device for an intermediate session management function on the AF side provided by an embodiment of the application;

图14为本申请实施例提供的PCF侧的中间会话管理功能I-SMF确定设备的结构示意图；FIG. 14 is a schematic structural diagram of a device for determining an intermediate session management function I-SMF on the PCF side according to an embodiment of the application;

图15为本申请实施例提供的SMF侧的中间会话管理功能I-SMF确定设备的结构示意图；Fig. 15 is a schematic structural diagram of an I-SMF determining device for an intermediate session management function on the SMF side provided by an embodiment of the application;

图16为本申请实施例提供的AMF侧的中间会话管理功能I-SMF确定设备的结构示意图。FIG. 16 is a schematic structural diagram of an I-SMF determining device for an intermediate session management function on the AMF side provided by an embodiment of the application.

具体实施方式Detailed ways

为了使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请作进一步地详细描述，显然，所描述的实施例仅仅是本申请一部份实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。In order to make the purpose, technical solutions, and advantages of the application more clear, the application will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all the embodiments. . Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

本申请实施例描述的应用场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着新应用场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。其中，在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。The application scenarios described in the embodiments of this application are intended to more clearly illustrate the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. Those of ordinary skill in the art will know that as new application scenarios change It appears that the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems. Among them, in the description of the present application, unless otherwise specified, "multiple" means two or more.

MEC技术通过将计算存储能力与业务服务能力向网络边缘迁移，尽可能不用将数据回传到云端，减少数据往返云端的等待时间和网络成本。基于5G的分布式云基础设施，在边缘云化构建5G用户面和5G MEC节点，5G MEC节点提供MEC应用平台实现对第三方应用的部署和管理能力。用户可通过MEC应用获得服务。MEC technology migrates computing storage capabilities and business service capabilities to the edge of the network, avoiding the need to transmit data back to the cloud as much as possible, reducing the waiting time for data to and from the cloud and network costs. Based on the 5G distributed cloud infrastructure, 5G user planes and 5G MEC nodes are built at the edge of cloudification. 5G MEC nodes provide MEC application platforms to realize the deployment and management capabilities of third-party applications. Users can get services through the MEC application.

5G定义了应用功能AF，它向非授信域(例如，网络开方功能)或者向授信域(例如，策略控制功能)发送AF请求(AF request)，其中包含目标数字数据网(Digital Data Network，DNN)、应用身份标识(Identification，ID)、N6路由需求、应用位置等一系列参数。策略控制功能PCF根据AF提供的这些信息参数，结合自身策略控制，为目标协议数据单元会话(Protocol Data Unit Session，PDU Session)业务流生成策略控制和计费PCC规则，并通过SMF为其选择一个合适的UPF。MEC提供应用基础设施资源编排、应用实例化、应用规则配置等功能。因此，当MEC部署在5G***中时，MEC也可以充当AF角色，代表部署在MEC上的应用与5G***控制面交互。5G defines the application function AF, which sends an AF request (AF request) to non-trusted domains (for example, network prescribing function) or to trusted domains (for example, policy control function), which includes the target digital data network (Digital Data Network, DNN), application identification (Identification, ID), N6 routing requirements, application location and a series of parameters. The policy control function PCF generates policy control and charging PCC rules for the target protocol data unit session (Protocol Data Unit Session, PDU Session) service flow according to these information parameters provided by the AF, combined with its own policy control, and selects one for it through SMF Appropriate UPF. MEC provides functions such as application infrastructure resource orchestration, application instantiation, and application rule configuration. Therefore, when the MEC is deployed in the 5G system, the MEC can also act as an AF role, representing the interaction between the applications deployed on the MEC and the 5G system control plane.

目前的边缘计算网络架构，如图1所示，其主要网络功能介绍如下：The current edge computing network architecture is shown in Figure 1. Its main network functions are introduced as follows:

接入与移动性管理功能AMF 101：具有注册、连接管理等功能。Access and mobility management function AMF 101: It has functions such as registration and connection management.

用户面功能模块UPF 102：具有与数据网络互连的外部PDU会话节点，报文路由和转发功能。User plane function module UPF 102: It has an external PDU session node interconnected with the data network, and has the functions of message routing and forwarding.

会话管理功能SMF 103：具有会话建立、删除，用户面选择与控制，UE IP分配等功能。Session management function SMF 103: It has functions such as session establishment and deletion, user plane selection and control, and UE IP allocation.

应用功能AF 104：具有与3GPP核心网交互以提供业务功能。基于运营商部署情况，可信AF可以与相关网络功能NF进行直接交互，而非可信AF不能直接与NF交互，而应使用对外公开框架通过网络开放功能NEF进行。Application function AF 104: Interact with the 3GPP core network to provide service functions. Based on the deployment of operators, the trusted AF can directly interact with the relevant network function NF, while the untrusted AF cannot directly interact with the NF. Instead, the external disclosure framework should be used to conduct the network opening function NEF.

NEF：具有提供安全地将3GPP网络提供的业务和能力暴露给外部网络相关的功能。NEF: Provides functions to safely expose the services and capabilities provided by the 3GPP network to external networks.

策略控制功能PCF 105：具有支持统一的策略框架，以管理网络行为，提供策略规则，以便控制面NF执行。Policy control function PCF 105: It has a unified policy framework to manage network behaviors and provide policy rules for the control plane NF to execute.

网络存储功能(Network Repository Function，NRF)NRF：具有支持服务发现功能。Network Storage Function (Network Repository Function, NRF) NRF: It has the function of supporting service discovery.

统一数据管理(Unified Data Management，UDM)UDM 106：存储UE的信息，例如签约信息，已建立PDU会话的信息。Unified Data Management (UDM) UDM 106: Store UE information, such as subscription information, and information about established PDU sessions.

5G***架构允许UDM，PCF和NEF在统一数据库(Unified Data Repository，UDR)存储数据，其中，UDR具有签约数据的存储及UDM前端(Front end，FE)对签约数据的检索、策略信息的存储及PCF对策略信息的检索的功能。The 5G system architecture allows UDM, PCF, and NEF to store data in a unified database (Unified Data Repository, UDR). Among them, UDR has the storage of contracted data and the retrieval of contracted data by the UDM front end (FE), the storage of policy information, and the storage of policy information. The function of PCF to retrieve policy information.

I-SMF是一种根据需要***、更改或删除到PDU会话的SMF，用以控制原始SMF无法控制的UPF(因UPF属于不同SMF服务区域)。SMF在5G构架中的位置如图1所示，SMF是会话管理功能，主要用于会话建立、删除，用户面选择与控制，UE IP分配等。I-SMF与SMF具有相同功能。I-SMF is an SMF that is inserted, changed, or deleted to the PDU session as needed to control UPF that the original SMF cannot control (because the UPF belongs to different SMF service areas). The position of SMF in the 5G architecture is shown in Figure 1. SMF is a session management function, which is mainly used for session establishment and deletion, user plane selection and control, UE IP allocation, etc. I-SMF has the same function as SMF.

由AMF负责检查何时为一个PDU会话添加或删除一个I-SMF。当移动性事件发生时(如，切换AMF改变)，如果SMF的服务区域不包含UE的新位置，则AMF选择和***一个能服务UE与满足网络切片标识(Sign-Network Slice Selection Assistance Information，S-NSSAI)的I-SMF。The AMF is responsible for checking when to add or delete an I-SMF for a PDU session. When a mobility event occurs (for example, handover AMF changes), if the service area of the SMF does not contain the new location of the UE, the AMF selects and inserts a service that can serve the UE and meets the network slice identification (Sign-Network Slice Selection Assistance Information, S -NSSAI) I-SMF.

相反地，如果AMF检测到一个不再需要的I-SMF，AMF将删除I-SMF与AMF直接连接到PDU会话间的SMF接口。如果AMF检测到SMF不能为UE所在位置提供服务(如，由于UE移动性)，则AMF选择一个新的I-SMF为UE提供服务。如果存在的I-SMF不能为UE所在位置提供服务，则AMF将发起对I-SMF的更换。Conversely, if AMF detects an I-SMF that is no longer needed, AMF will delete the SMF interface between the I-SMF and the AMF directly connected to the PDU session. If the AMF detects that the SMF cannot provide services for the location of the UE (for example, due to the mobility of the UE), the AMF selects a new I-SMF to provide services for the UE. If the existing I-SMF cannot provide services for the location of the UE, the AMF will initiate the replacement of the I-SMF.

综上所述，目前5G定义的I-SMF选择机制，由AMF基于UE位置、SMF与I-SMF的服务区域等依据，决定是否***、更改或删除I-SMF，在MEC场景中，同样存在由于UE移动的因素，使SMF无法控制UPF而导致UE与MEC之间会话受到影响。To sum up, the current I-SMF selection mechanism defined by 5G is determined by the AMF based on the UE location, SMF and I-SMF service area, etc., to determine whether to insert, change or delete the I-SMF. In the MEC scenario, there is also Due to the movement of the UE, the SMF cannot control the UPF and the session between the UE and the MEC is affected.

因此，本申请实施例提出了一种I-SMF选择方法，用以依据业务(例如，为需要使用MEC业务的UE)选择适合的I-SMF，保证UE与MEC之间会话与服务连续性。Therefore, the embodiment of the present application proposes an I-SMF selection method to select a suitable I-SMF according to the service (for example, for UEs that need to use the MEC service) to ensure the session and service continuity between the UE and the MEC.

针对上述场景，下面结合说明书附图对本申请实施例做进一步详细描述。In view of the foregoing scenarios, the embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings of the specification.

如图2所示，结合AF侧、PCF侧、SMF侧和AMF侧之间的交互，本申请实施例提供的一种中间会话管理功能I-SMF确定方法，AF发送包含MEC对应的DNAI的请求信息AF request，PCF基于AF request生成新的PCC规则更新至SMF，SMF获取PCC规则中的DNAI发送给AMF，AMF基于DNAI选择I-SMF，具体包括如下步骤：As shown in Figure 2, in conjunction with the interaction between the AF side, the PCF side, the SMF side and the AMF side, an intermediate session management function I-SMF determination method provided in the embodiment of the application is provided. The AF sends a request containing the DNAI corresponding to the MEC Information AF request, PCF generates new PCC rules and updates to SMF based on AF request, SMF obtains DNAI in PCC rules and sends it to AMF, and AMF selects I-SMF based on DNAI, which specifically includes the following steps:

步骤201，AF创建请求信息，请求信息中包含MEC应用信息为DNAI，用于指示基于DNAI选择I-SMF。Step 201: AF creates request information. The request information contains MEC application information as DNAI, which is used to instruct the selection of I-SMF based on DNAI.

具体实施时，AF通过调用Nnef_TrafficInfluence_Create服务操作，创建一个请求信息，信息中包含MEC对应的数据网接入标识符DNAI，也是部署MEC的DN所对应的DNAI，用于指示基于DNAI选择I-SMF，请求信息中还可包含一个或一组UE ID(例如，通用公共用户标识(Generic Public Subscription Identifier，GPSI))。In specific implementation, AF creates a request message by calling the Nnef_TrafficInfluence_Create service operation. The message contains the data network access identifier DNAI corresponding to the MEC, which is also the DNAI corresponding to the DN where the MEC is deployed, and is used to indicate the selection of I-SMF based on the DNAI. The request information may also include one or a group of UE IDs (for example, Generic Public Subscription Identifier (GPSI)).

步骤202，NEF接收请求信息并存储到UDR中。Step 202: NEF receives the request information and stores it in the UDR.

具体实施时，AF发送请求信息到NEF，NEF存储AF请求到UDR中。During specific implementation, AF sends request information to NEF, and NEF stores the AF request in UDR.

步骤203，UDR向PCF发送通知信息。Step 203: UDR sends notification information to PCF.

具体实施时，由于PCF向UDR订阅AF请求的变化，AF请求信息发生变化时，UDR通过发送通知信息的方式通知PCF，PCF可从通知信息中获得AF请求的请求信息。In specific implementation, because the PCF subscribes to the UDR for changes in the AF request, when the AF request information changes, the UDR notifies the PCF by sending notification information, and the PCF can obtain the request information of the AF request from the notification information.

步骤204，PCF依据请求信息，生成新的PCC规则。Step 204: The PCF generates a new PCC rule according to the request information.

一种可能的实施方式中，PCF可以直接接收AF发送的请求信息，依据请求信息，生成新的PCC规则，也即不需执行步骤203和204，AF在生成请求信息后，直接将请求信息发送给PCF。In a possible implementation, the PCF can directly receive the request information sent by the AF, and generate new PCC rules based on the request information, that is, without performing steps 203 and 204, the AF directly sends the request information after generating the request information To PCF.

步骤205，PCF向SMF发送新的PCC规则，PCC规则中包含MEC应用信息。Step 205: The PCF sends a new PCC rule to the SMF, and the PCC rule contains MEC application information.

具体实施时，PCF可以通过调用Npcf_SMPolicyControl_UpdateNotify，将新的PCC规则发送给SMF。During specific implementation, the PCF can send the new PCC rule to the SMF by calling Npcf_SMPolicyControl_UpdateNotify.

步骤206，SMF从PCC规则中提取MEC应用信息，并生成I-SMF选择指示信息。Step 206: SMF extracts MEC application information from PCC rules, and generates I-SMF selection instruction information.

具体实施时，SMF接收到新的PCC规则后，从PCC规则中提取DNAI信息，并生成I-SMF选择指示信息，其中I-SMF选择指示信息中包含DNAI信息。In specific implementation, after SMF receives the new PCC rule, it extracts DNAI information from the PCC rule and generates I-SMF selection instruction information, where the I-SMF selection instruction information contains DNAI information.

步骤207，SMF向AMF发送带有MEC应用信息的I-SMF选择指示信息。Step 207: The SMF sends I-SMF selection indication information with MEC application information to the AMF.

步骤208，AMF根据I-SMF选择指示信息选择I-SMF。Step 208: The AMF selects an I-SMF according to the I-SMF selection instruction information.

具体实施时，AMF接收的I-SMF选择指示信息中包含DNAI信息，AMF根据DNAI信息选择I-SMF，例如，AMF根据I-SMF是否支持DNAI选择I-SMF，关于I-SMF是否支持DNAI的信息，可以从NRF获取。In specific implementation, the I-SMF selection instruction information received by AMF contains DNAI information, and AMF selects I-SMF based on DNAI information. For example, AMF selects I-SMF based on whether I-SMF supports DNAI, and whether I-SMF supports DNAI. Information can be obtained from NRF.

如图3所示，结合AF侧、PCF侧、SMF侧和AMF侧之间的交互，本申请实施例提供的一种中间会话管理功能I-SMF确定方法，AF发送包含MEC服务器地址/MEC应用服务器地址的AF request，PCF基于AF request生成新的PCC规则更新至SMF，SMF基于PCC规则选择I-SMF，或SMF从PCC规则中获取MEC服务器地址/MEC应用服务器地址发送给AMF，AMF基于MEC服务器地址/MEC应用服务器地址选择I-SMF，具体包括如下步骤：As shown in Figure 3, in conjunction with the interaction between the AF side, the PCF side, the SMF side and the AMF side, an intermediate session management function I-SMF determination method provided in the embodiment of the application is provided. The AF sent contains the MEC server address/MEC application AF request of server address, PCF generates new PCC rules based on AF request and updates to SMF, SMF selects I-SMF based on PCC rules, or SMF obtains MEC server address/MEC application server address from PCC rules and sends it to AMF, which is based on MEC The server address/MEC application server address selection I-SMF includes the following steps:

步骤301，AF创建请求信息，请求信息中包含MEC服务器地址/MEC应用服务器地址，用于指示基于MEC服务器地址/MEC应用服务器地址选择I-SMF。Step 301, AF creation request information, the request information includes the MEC server address/MEC application server address, which is used to instruct the selection of I-SMF based on the MEC server address/MEC application server address.

具体实施时，AF通过调用Nnef_TrafficInfluence_Create服务操作，创建一个请求信息，信息中包含MEC服务器地址/MEC应用服务器地址，用于指示基于MEC服务器地址/MEC应用服务器地址，选择I-SMF，请求信息中包含一个或一组UE ID(例如，GPSI)。During specific implementation, AF creates a request message by calling the Nnef_TrafficInfluence_Create service operation. The message contains the MEC server address/MEC application server address, which is used to indicate that based on the MEC server address/MEC application server address, select I-SMF, and the request information contains One or a group of UE IDs (for example, GPSI).

步骤302，NEF接收请求信息并存储到UDR中。Step 302: NEF receives the request information and stores it in the UDR.

步骤303，UDR向PCF发送通知信息。Step 303: The UDR sends notification information to the PCF.

步骤304，PCF根据请求信息，生成新的PCC规则，PCC规则中包含MEC服务器地址/MEC应用服务器地址。Step 304: The PCF generates a new PCC rule according to the request information, and the PCC rule includes the MEC server address/MEC application server address.

一种可能的实施方式中，PCF可以直接接收AF发送的请求信息，依据请求信息，生成新的PCC规则，也即不需执行步骤303和304，AF在生成请求信息后，直接将请求信息发送给PCF。In a possible implementation, the PCF can directly receive the request information sent by the AF, and generate new PCC rules based on the request information, that is, without performing steps 303 and 304, the AF directly sends the request information after generating the request information To PCF.

步骤305，PCF向SMF发送新的PCC规则，PCC规则中包含MEC服务器地址/MEC应用服务器地址。Step 305: The PCF sends a new PCC rule to the SMF, and the PCC rule includes the MEC server address/MEC application server address.

具体实施时，PCF通过调用Npcf_SMPolicyControl_UpdateNotify，将PCC规则发送给SMF。During specific implementation, PCF sends PCC rules to SMF by calling Npcf_SMPolicyControl_UpdateNotify.

步骤306，SMF在新的PCC规则中获取MEC服务器地址/MEC应用服务器地址，并发送至AMF。Step 306: The SMF obtains the MEC server address/MEC application server address in the new PCC rule, and sends it to the AMF.

步骤307，AMF根据MEC服务器地址/MEC应用服务器地址选择I-SMF。In step 307, the AMF selects the I-SMF according to the MEC server address/MEC application server address.

具体实施时，AMF根据接收SMF发送的MEC服务器地址/MEC应用服务器地址选择合适的I-SMF，例如I-SMF的服务区域能覆盖接入MEC，I-SMF能否通过对应的UPF接入MEC。In specific implementation, AMF selects the appropriate I-SMF according to the MEC server address/MEC application server address sent by the received SMF. For example, the service area of the I-SMF can cover the access to the MEC, and whether the I-SMF can access the MEC through the corresponding UPF .

一种可能的实施方式中，执行步骤305后，由SMF根据PCC规则，选择I-SMF。In a possible implementation manner, after step 305 is performed, the SMF selects the I-SMF according to the PCC rules.

如图4所示，结合AF侧、PCF侧、SMF侧和AMF侧之间的交互，本申请实施例提供的一种中间会话管理功能I-SMF确定方法，AF发送包含MEC应用属性信息的AF request，MEC应用属性信息包括应用及应用实例的分布，服务能力、负载、生命周期，及其相应的MEC服务器地址/MEC应用服务器地址等。PCF基于AF request生成新的PCC规则更新至SMF。SMF基于PCC规则选择I-SMF，或将SMF从PCC规则中获取MEC应用属性信息发送给AMF，由AMF基于MEC应用属性信息选择I-SMF，具体包括如下步骤：As shown in Figure 4, in conjunction with the interaction between the AF side, the PCF side, the SMF side and the AMF side, an intermediate session management function I-SMF determination method provided in the embodiment of the present application is provided. The AF sends the AF containing the MEC application attribute information. Request, MEC application attribute information includes the distribution of applications and application instances, service capabilities, load, life cycle, and the corresponding MEC server address/MEC application server address, etc. PCF generates new PCC rules and updates to SMF based on AF request. SMF selects I-SMF based on PCC rules, or SMF obtains MEC application attribute information from PCC rules and sends it to AMF, and AMF selects I-SMF based on MEC application attribute information, which specifically includes the following steps:

步骤401，AF创建请求信息，请求信息中包含MEC应用信息为MEC应用属性信息，用于指示基于MEC应用属性信息选择I-SMF。Step 401: AF creation request information, the request information contains MEC application information as MEC application attribute information, which is used to instruct the selection of I-SMF based on the MEC application attribute information.

具体实施时，AF通过调用Nnef_TrafficInfluence_Create服务操作，创建一个请求信息，信息中包含MEC应用属性信息(包括应用及应用实例的分布，服务能力、服务类型、负载、生命周期，用于为I-SMF选择、流量路由、流量导向等提供信息)，用于指示基于MEC应用属性信息选择I-SMF，请求信息中包含一个或一组UE ID(例如，GPSI)。During specific implementation, AF creates a request message by calling the Nnef_TrafficInfluence_Create service operation. The message contains MEC application attribute information (including the distribution of applications and application instances, service capabilities, service types, loads, and life cycles, which are used to select I-SMF , Traffic routing, traffic guidance, etc.), used to indicate the selection of I-SMF based on MEC application attribute information, and the request information includes one or a group of UE IDs (for example, GPSI).

步骤402，NEF接收请求信息并存储到UDR中。Step 402: NEF receives the request information and stores it in the UDR.

步骤403，UDR向PCF发送通知信息。Step 403: UDR sends notification information to PCF.

具体实施时，由于PCF向UDR订阅AF请求的变化，AF请求信息发生变化时，UDR通过发送通知信息的方式通知PCF，PCF可从通知信息中获得 AF请求的请求信息。In specific implementation, because the PCF subscribes to the UDR for changes in the AF request, when the AF request information changes, the UDR notifies the PCF by sending notification information, and the PCF can obtain the request information of the AF request from the notification information.

步骤404，PCF根据请求信息，生成新的PCC规则。In step 404, the PCF generates a new PCC rule according to the request information.

一种可能的实施方式中，PCF可以直接接收AF发送的请求信息，依据请求信息，生成新的PCC规则，也即不需执行步骤403和404，AF在生成请求信息后，直接将请求信息发送给PCF。In a possible implementation, the PCF can directly receive the request information sent by the AF, and generate a new PCC rule based on the request information, that is, without performing steps 403 and 404, the AF sends the request information directly after generating the request information To PCF.

一种可能的实施方式中，PCF可以直接接收AF发送的请求信息，依据请求信息，生成新的PCC规则，也即不需执行步骤502和503，AF在生成请求信息后，直接将请求信息发送给PCF。In a possible implementation manner, the PCF can directly receive the request information sent by the AF, and generate a new PCC rule based on the request information, that is, it is not necessary to perform steps 502 and 503. After the AF generates the request information, it directly sends the request information To PCF.

步骤405，PCF向SMF发送新的PCC规则，PCC规则中包含MEC应用属性信息。Step 405: The PCF sends a new PCC rule to the SMF, and the PCC rule contains MEC application attribute information.

步骤406，SMF在新的PCC规则中获取MEC应用属性信息，并发送至AMF。Step 406: The SMF obtains the MEC application attribute information from the new PCC rule and sends it to the AMF.

步骤407，AMF根据MEC应用属性信息选择I-SMF。In step 407, the AMF selects the I-SMF according to the MEC application attribute information.

具体实施时，AMF根据接收SMF发送的MEC应用属性信息选择合适的I-SMF，例如基于MEC应用的服务类型、位置、I-SMF的服务区域，能否接入MEC等选择I-SMF。In specific implementation, the AMF selects an appropriate I-SMF according to the MEC application attribute information sent by the received SMF, for example, the I-SMF is selected based on the service type, location, and service area of the I-SMF of the MEC application, whether it can access the MEC, etc.

一种可能的实施方式中，执行步骤405后，可以不需进行步骤406和步骤407，由SMF根据PCC规则，选择I-SMF。In a possible implementation manner, after step 405 is performed, steps 406 and 407 may not be required, and the SMF selects the I-SMF according to the PCC rules.

如图5所示，本申请实施例提供的一种中间会话管理功能I-SMF确定方法，应用于AF侧，包括如下步骤：As shown in FIG. 5, an intermediate session management function I-SMF determination method provided by an embodiment of the present application is applied to the AF side and includes the following steps:

步骤501，创建请求信息，请求信息中包含移动边缘计算MEC应用信息，请求信息用于指示接入与移动性管理AMF或者会话管理功能SMF在选择I-SMF时，基于MEC应用信息选择I-SMF。Step 501: Create request information. The request information contains mobile edge computing MEC application information. The request information is used to indicate access and mobility management AMF or session management function SMF. When I-SMF is selected, the I-SMF is selected based on the MEC application information. .

具体实施时，AF可以通过调用Nnef_TrafficInfluence_Create服务操作，创建一个请求信息AF request，请求信息中包含MEC应用信息，MEC应用信息可以是MEC对应的DNAI、MEC服务器地址、MEC应用属性信息中的一种或多种，其中，MEC应用属性信息包括MEC应用、MEC应用实例的分布、服务能力、服务类型、负载、生命周期，也即MEC应用信息相关信息。During specific implementation, AF can create a request information AF request by calling the Nnef_TrafficInfluence_Create service operation. The request information contains MEC application information. The MEC application information can be one of the DNAI corresponding to the MEC, the MEC server address, and the MEC application attribute information. There are many types, among which, the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles, that is, information related to MEC application information.

请求信息中的MEC应用信息为MEC应用属性信息时，可以为I-SMF选择、流量路由、流量导向等提供信息。When the MEC application information in the request information is MEC application attribute information, it can provide information for I-SMF selection, traffic routing, and traffic guidance.

由AMF生成的请求信息，用于指示AMF或者SMF在选择I-SMF时，基于MEC应用信息进行I-SMF的选择，实现为MEC选择合适的I-SMF，以保证UE与MEC之间会话和服务的连续性，尤其是在UE移动时。The request information generated by AMF is used to instruct AMF or SMF to select I-SMF based on MEC application information when selecting I-SMF, so as to select a suitable I-SMF for the MEC to ensure the session between the UE and the MEC. Service continuity, especially when the UE is moving.

需要说明的是，AF创建的请求信息中还可以包括一个UE ID或一组UE ID(例如，GPSI)。It should be noted that the request information created by the AF may also include a UE ID or a group of UE IDs (for example, GPSI).

步骤502，向网络开放功能NEF或者策略控制功能PCF发送请求信息。Step 502: Send the request information to the network opening function NEF or the policy control function PCF.

具体实施时，AF将生成的请求信息发送给NEF，使NEF将请求信息存储到UDR中，PCF可以通过向UDR订阅请求信息的变化，从通知信息中获得请求信息。In specific implementation, the AF sends the generated request information to the NEF, so that the NEF stores the request information in the UDR, and the PCF can obtain the request information from the notification information by subscribing to the UDR for the change of the request information.

或者，AF将生成的请求信息直接发送给PCF。Alternatively, the AF sends the generated request information directly to the PCF.

如图6所示，本申请实施例提供的一种中间会话管理功能I-SMF确定方法，应用于PCF侧，包括如下步骤：As shown in FIG. 6, an intermediate session management function I-SMF determination method provided by an embodiment of the present application is applied to the PCF side and includes the following steps:

步骤601，获取应用功能AF发送的请求信息，请求信息中包含移动边缘计算MEC应用信息，请求信息用于指示接入与移动性管理AMF或者会话管理功能SMF在选择I-SMF时，基于MEC应用信息选择I-SMF。Step 601: Obtain request information sent by the application function AF. The request information includes mobile edge computing MEC application information. The request information is used to indicate the access and mobility management AMF or the session management function SMF when the I-SMF is selected, based on the MEC application Information choose I-SMF.

具体实施时，PCF直接获取由AF发送给PCF的请求信息，PCF通过向UDR订阅AF发送到NEF的请求信息，当请求信息变化时，PCF通过通知信息，从中获得AF发送的请求信息。In specific implementation, the PCF directly obtains the request information sent by the AF to the PCF, and the PCF subscribes to the UDR for the request information sent by the AF to the NEF. When the request information changes, the PCF obtains the request information sent by the AF through the notification information.

PCF获取的请求信息中，包含MEC应用信息，MEC应用信息可以是DNAI、MEC服务器地址、MEC应用属性信息中的一种或多种，其中，MEC应用属性信息包括MEC应用、MEC应用实例的分布、服务能力、服务类型、负载、生命周期，也即MEC业务相关信息。The request information obtained by the PCF includes MEC application information. The MEC application information can be one or more of DNAI, MEC server address, and MEC application attribute information. Among them, the MEC application attribute information includes the distribution of MEC applications and MEC application instances. , Service capability, service type, load, life cycle, that is, MEC business related information.

步骤602，根据请求信息，生成包含MEC应用信息的策略控制和计费PCC规则。Step 602: According to the request information, generate policy control and charging PCC rules containing MEC application information.

具体实施时，PCF根据获取AF发送的请求信息，生成新的PCC规则，新的PCC规则中的包含MEC应用信息。During specific implementation, the PCF generates a new PCC rule according to the request information sent by the AF, and the new PCC rule contains the MEC application information.

步骤603，将PCC规则发送至会话管理功能SMF。Step 603: Send the PCC rule to the session management function SMF.

具体实施时，PCF通过调用Npcf_SMPolicyControl_UpdateNotify将生成的PCC规则发送到SMF，也即将新规则更新SMF。During specific implementation, PCF sends the generated PCC rules to SMF by calling Npcf_SMPolicyControl_UpdateNotify, that is, to update SMF with new rules.

如图7所示，本申请实施例提供的一种中间会话管理功能I-SMF确定方法，应用于SMF侧，包括如下步骤：As shown in FIG. 7, an intermediate session management function I-SMF determination method provided by an embodiment of the present application is applied to the SMF side and includes the following steps:

步骤701，接收策略控制功能PCF发送的PCC规则，PCC规则中包含移动边缘计算MEC应用信息。Step 701: Receive a PCC rule sent by a policy control function PCF, where the PCC rule contains mobile edge computing MEC application information.

具体实施时，SMF接收PCF发送的PCC规则，更新SMF中的PCC规则，接收的PCC规则中包含MEC应用信息，第一类MEC应用信息可以是MEC对应的DNAI，第二类MEC应用信息可以是MEC服务器地址、MEC应用服务器地址、MEC应用属性信息中的一种或多种，其中，MEC应用属性信息包括MEC应用、MEC应用实例的分布、服务能力、服务类型、负载、以及生命周期。In specific implementation, SMF receives the PCC rules sent by PCF, updates the PCC rules in SMF, the received PCC rules contain MEC application information, the first type of MEC application information can be the DNAI corresponding to the MEC, and the second type of MEC application information can be One or more of MEC server address, MEC application server address, and MEC application attribute information, where the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.

步骤702，在确定PCC规则中包含的MEC应用信息为第一类MEC应用信息时，基于第一类MEC应用信息，生成I-SMF选择指示信息，并将I-SMF选择指示信息发送至接入与移动性管理功能AMF，I-SMF选择指示信息用于指示AMF在选择I-SMF时基于第一类MEC应用信息确定I-SMF。Step 702: When it is determined that the MEC application information contained in the PCC rule is the first type of MEC application information, generate I-SMF selection indication information based on the first type of MEC application information, and send the I-SMF selection indication information to the access With the mobility management function AMF, the I-SMF selection indication information is used to instruct the AMF to determine the I-SMF based on the first type of MEC application information when selecting the I-SMF.

具体实施时，SMF确定接收的PCC规则中包含的MEC应用信息为第一类MEC应用信息时，也即MEC对应的DNAI时，可以从PCC规则中提取DNAI信息，生成I-SMF选择指示信息，并发送给AMF，用于指示AMF在重新确定I-SMF时，根据第一类MEC应用信息，也即DNAI选择合适的I-SMF。In specific implementation, when the SMF determines that the MEC application information contained in the received PCC rule is the first type of MEC application information, that is, when the MEC corresponds to the DNAI, the DNAI information can be extracted from the PCC rule to generate I-SMF selection instruction information, And send it to AMF to instruct AMF to select the appropriate I-SMF according to the first type of MEC application information, that is, DNAI when re-determining the I-SMF.

步骤703，在确定PCC规则中包含的MEC应用信息为第二类MEC应用信息时，根据PCC规则中包含的第二类MEC应用信息在选择I-SMF时确定 I-SMF，或者在包含第二类MEC应用信息的PCC规则中提取第二类MEC应用信息，将第二类MEC应用信息转发至接入与移动性管理功能AMF。Step 703: When it is determined that the MEC application information contained in the PCC rule is the second type of MEC application information, the I-SMF is determined when the I-SMF is selected according to the second type of MEC application information contained in the PCC rule, or when the second type of MEC application information is included The second-type MEC application information is extracted from the PCC rules of the MEC-like application information, and the second-type MEC application information is forwarded to the access and mobility management function AMF.

具体实施时，SMF确定接收的PCC规则中包含的MEC应用信息为第二类MEC应用信息时，也即MEC服务器地址、MEC应用服务器地址、MEC应用属性信息中的一种或多种，其中MEC应用属性信息包括MEC应用、MEC应用实例的分布、服务能力、服务类型、负载、以及生命周期。In specific implementation, when the SMF determines that the MEC application information contained in the received PCC rule is the second type of MEC application information, that is, one or more of the MEC server address, the MEC application server address, and the MEC application attribute information, where the MEC Application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.

确定PCC规则中的第二类MEC应用信息时，SMF可以直接在选择I-SMF时基于第二类MEC应用信息确定I-SMF，或者PCC规则中提取第二类MEC应用信息，并将第二类MEC应用信息发送给AMF。When determining the second type of MEC application information in the PCC rules, SMF can directly determine the I-SMF based on the second type of MEC application information when selecting the I-SMF, or extract the second type of MEC application information from the PCC rules, and combine the second type of MEC application information. The MEC-like application information is sent to the AMF.

如图8所示，本申请实施例提供的一种中间会话管理功能I-SMF确定方法，应用于AMF侧，包括如下步骤：As shown in FIG. 8, an intermediate session management function I-SMF determination method provided by an embodiment of the present application is applied to the AMF side and includes the following steps:

步骤801，接收会话管理功能SMF发送的I-SMF选择指示信息，I-SMF选择指示信息中包含第一类MEC应用信息。Step 801: Receive I-SMF selection indication information sent by the session management function SMF, where the I-SMF selection indication information includes the first type of MEC application information.

具体实施时，AMF接收到SMF发送的I-SMF选择指示信息，用于指示AMF根据指示信息中包含第一类MEC应用信息(例如，DNAI)选择合适的I-SMF。During specific implementation, the AMF receives the I-SMF selection indication information sent by the SMF, which is used to instruct the AMF to select a suitable I-SMF according to the first type of MEC application information (for example, DNAI) contained in the indication information.

步骤802，根据第一类MEC应用信息在选择I-SMF时确定I-SMF。Step 802: Determine the I-SMF when selecting the I-SMF according to the MEC application information of the first type.

具体实施时，AMF在选择I-SMF时，根据DNAI选择合适的I-SMF，例如，AMF根据I-SMF是否支持DNAI选择I-SMF，关于I-SMF是否支持DNAI的信息，可以从NRF获取。AMF还可以执行I-SMF的***或改变操作流程。In specific implementation, when AMF selects I-SMF, it selects the appropriate I-SMF based on DNAI. For example, AMF selects I-SMF based on whether I-SMF supports DNAI. Information about whether I-SMF supports DNAI can be obtained from NRF. . AMF can also perform I-SMF insertion or change operation flow.

一种可能的实施方式中，AMF接收SMF发送的第二类MEC应用信息；In a possible implementation manner, the AMF receives the MEC application information of the second type sent by the SMF;

具体实施时，接收SMF发送的第二类MEC应用信息，AMF根据第二类MEC应用信息选择合适的I-SMF，例如，根据I-SMF的服务区域能覆盖接入MEC、能否通过对应的UPF接入MEC等确定I-SMF。During specific implementation, receiving the second type of MEC application information sent by SMF, AMF selects the appropriate I-SMF according to the second type of MEC application information, for example, according to the service area of the I-SMF can cover access to the MEC and whether it can pass the corresponding UPF accesses MEC, etc. to determine I-SMF.

PCC规则中包含的第二类MEC应用信息为MEC应用属性信息(例如，MEC应用相关信息)时，MEC应用属性信息，包括：应用及应用实例的分布、服务能力、服务类型、负载、生命周期中的一种或几种，AMF根据PCC规则中的第二类MEC应用信息选择合适的I-SMF，例如，基于MEC应用的服务类型、位置、I-SMF的服务区域、能否接入MEC等确定I-SMF。When the second type of MEC application information contained in the PCC rules is MEC application attribute information (for example, MEC application related information), the MEC application attribute information includes: the distribution of applications and application instances, service capabilities, service types, loads, and life cycles One or more of them, the AMF selects the appropriate I-SMF according to the second type of MEC application information in the PCC rules, for example, based on the service type and location of the MEC application, the service area of the I-SMF, and whether the MEC can be accessed Wait to determine the I-SMF.

需要说明的是，MEC应用属性信息可以用于I-SMF选择，还可以用于为流量路由、流量导向等环节提供信息。另外，在确定I-SMF时还可以结合一个UE ID或一组UE ID(例如，通用公共用户标识GPSI)进行确定。It should be noted that MEC application attribute information can be used for I-SMF selection, and can also be used to provide information for traffic routing, traffic guidance and other links. In addition, when determining the I-SMF, a UE ID or a group of UE IDs (for example, a general public user identity GPSI) may also be used for determination.

基于相同的发明构思，本申请实施例还提供一种中间会话管理功能I-SMF确定设备，由于该设备即是本申请实施例中的方法中的设备，并且该设备解决问题的原理与该方法相似，因此该设备的实施可以参见方法的实施，重复之处不再赘述。Based on the same inventive concept, the embodiment of the present application also provides an intermediate session management function I-SMF determination device, because the device is the device in the method in the embodiment of the present application, and the principle of the device to solve the problem is the same as that of the method. Similar, so the implementation of the device can refer to the implementation of the method, and the repetition will not be repeated.

如图9所示，本申请实施例提供的一种中间会话管理功能I-SMF确定设备，应用于应用功能AF侧，包括：处理器900、存储器901和收发机902。As shown in FIG. 9, an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the application function AF side and includes a processor 900, a memory 901, and a transceiver 902.

处理器900负责管理总线架构和通常的处理，存储器901可以存储处理器900在执行操作时所使用的数据。收发机902用于在处理器900的控制下接收和发送数据。The processor 900 is responsible for managing the bus architecture and general processing, and the memory 901 can store data used by the processor 900 when performing operations. The transceiver 902 is used to receive and transmit data under the control of the processor 900.

总线架构可以包括任意数量的互联的总线和桥，具体由处理器900代表的一个或多个处理器和存储器901代表的存储器的各种电路链接在一起。总线架构还可以将诸如***设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。处理器900负责管理总线架构和通常的处理，存储器901可以存储处理器900在执行操作时所使用的数据。The bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 900 and various circuits of the memory represented by the memory 901 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein. The bus interface provides the interface. The processor 900 is responsible for managing the bus architecture and general processing, and the memory 901 can store data used by the processor 900 when performing operations.

本申请实施例揭示的流程，可以应用于处理器900中，或者由处理器900实现。在实现过程中，信号处理流程的各步骤可以通过处理器900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900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模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器901，处理器900读取存储器901中的信息，结合其硬件完成信号处理流程的步骤。The process disclosed in the embodiment of the present application may be applied to the processor 900 or implemented by the processor 900. In the implementation process, each step of the signal processing flow can be completed by an integrated logic circuit of hardware in the processor 900 or instructions in the form of software. The processor 900 may 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 transistor logic device, a discrete hardware component, and can implement or execute the The disclosed methods, steps and logic block diagrams. The general-purpose processor may 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 embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor. The software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory 901, and the processor 900 reads the information in the memory 901, and completes the steps of the signal processing flow in combination with its hardware.

其中，处理器900，用于读取存储器901中的程序并执行下列过程：Wherein, the processor 900 is configured to read the program in the memory 901 and execute the following process:

可选的，MEC应用信息包括以下一种或多种：MEC对应的数据网接入标识符DNAI、MEC服务器地址、MEC应用服务器地址、MEC应用属性信息；Optionally, the MEC application information includes one or more of the following: the data network access identifier DNAI corresponding to the MEC, the MEC server address, the MEC application server address, and MEC application attribute information;

如图10所示，本申请实施例提供的一种中间会话管理功能I-SMF确定设备，应用于策略控制功能PCF侧，包括：处理器1000、存储器1001和收发机1002。As shown in FIG. 10, an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the PCF side of the policy control function and includes a processor 1000, a memory 1001, and a transceiver 1002.

处理器1000负责管理总线架构和通常的处理，存储器1001可以存储处理器1000在执行操作时所使用的数据。收发机1002用于在处理器1000的控制下接收和发送数据。The processor 1000 is responsible for managing the bus architecture and general processing, and the memory 1001 can store data used by the processor 1000 when performing operations. The transceiver 1002 is used to receive and transmit data under the control of the processor 1000.

总线架构可以包括任意数量的互联的总线和桥，具体由处理器1000代表的一个或多个处理器和存储器1001代表的存储器的各种电路链接在一起。总线架构还可以将诸如***设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。处理器1000负责管理总线架构和通常的处理，存储器1001可以存储处理器1000在执行操作时所使用的数据。The bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1000 and various circuits of the memory represented by the memory 1001 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein. The bus interface provides the interface. The processor 1000 is responsible for managing the bus architecture and general processing, and the memory 1001 can store data used by the processor 1000 when performing operations.

本申请实施例揭示的流程，可以应用于处理器1000中，或者由处理器1000实现。在实现过程中，信号处理流程的各步骤可以通过处理器1000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1000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模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器1001，处理器1000读取存储器1001中的信息，结合其硬件完成信号处理流程的步骤。The process disclosed in the embodiment of the present application may be applied to the processor 1000 or implemented by the processor 1000. In the implementation process, each step of the signal processing flow can be completed by an integrated logic circuit of hardware in the processor 1000 or instructions in the form of software. The processor 1000 may 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 transistor logic device, a discrete hardware component, and can implement or execute the The disclosed methods, steps and logic block diagrams. The general-purpose processor may 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 embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor. The software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory 1001, and the processor 1000 reads the information in the memory 1001, and completes the steps of the signal processing flow in combination with its hardware.

其中，处理器1000，用于读取存储器1001中的程序并执行下列过程：Wherein, the processor 1000 is configured to read a program in the memory 1001 and execute the following process:

如图11所示，本申请实施例提供的一种中间会话管理功能I-SMF确定设备，应用于会话管理功能SMF侧，包括：处理器1100、存储器1101和收发机1102。As shown in FIG. 11, an intermediate session management function I-SMF determination device provided in an embodiment of the present application is applied to the session management function SMF side and includes a processor 1100, a memory 1101, and a transceiver 1102.

处理器1100负责管理总线架构和通常的处理，存储器1101可以存储处理器1100在执行操作时所使用的数据。收发机1102用于在处理器1100的控制下接收和发送数据。The processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1101 may store data used by the processor 1100 when performing operations. The transceiver 1102 is used to receive and send data under the control of the processor 1100.

总线架构可以包括任意数量的互联的总线和桥，具体由处理器1100代表的一个或多个处理器和存储器1101代表的存储器的各种电路链接在一起。总线架构还可以将诸如***设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。处理器1100负责管理总线架构和通常的处理，存储器1101可以存储处理器1100在执行操作时所使用的数据。The bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1100 and various circuits of the memory represented by the memory 1101 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein. The bus interface provides the interface. The processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1101 may store data used by the processor 1100 when performing operations.

本申请实施例揭示的流程，可以应用于处理器1100中，或者由处理器1100实现。在实现过程中，信号处理流程的各步骤可以通过处理器1100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1100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模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器1101，处理器1100读取存储器1101中的信息，结合其硬件完成信号处理流程的步骤。The process disclosed in the embodiment of the present application may be applied to the processor 1100 or implemented by the processor 1100. In the implementation process, each step of the signal processing flow can be completed by an integrated logic circuit of hardware in the processor 1100 or instructions in the form of software. The processor 1100 may 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 transistor logic device, a discrete hardware component, and may implement or execute the The disclosed methods, steps and logic block diagrams. The general-purpose processor may 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 embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor. The software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory 1101, and the processor 1100 reads the information in the memory 1101 and completes the steps of the signal processing flow in combination with its hardware.

其中，处理器1100，用于读取存储器1101中的程序并执行下列过程：Wherein, the processor 1100 is configured to read a program in the memory 1101 and execute the following process:

可选的，第一类MEC应用信息为MEC对应的数据网接入标识符DNAI。Optionally, the first type of MEC application information is the data network access identifier DNAI corresponding to the MEC.

可选的，第二类MEC应用信息包括以下一种或多种：MEC服务器地址、MEC应用服务器地址、MEC应用属性信息；Optionally, the second type of MEC application information includes one or more of the following: MEC server address, MEC application server address, and MEC application attribute information;

如图12所示，本申请实施例提供的一种中间会话管理功能I-SMF确定设备，应用于会话管理功能AMF侧，包括：处理器1200、存储器1201和收发机1202。As shown in FIG. 12, an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the session management function AMF side and includes a processor 1200, a memory 1201, and a transceiver 1202.

处理器1200负责管理总线架构和通常的处理，存储器1201可以存储处理器1200在执行操作时所使用的数据。收发机1202用于在处理器1200的控制下接收和发送数据。The processor 1200 is responsible for managing the bus architecture and general processing, and the memory 1201 can store data used by the processor 1200 when performing operations. The transceiver 1202 is used to receive and transmit data under the control of the processor 1200.

总线架构可以包括任意数量的互联的总线和桥，具体由处理器1200代表的一个或多个处理器和存储器1201代表的存储器的各种电路链接在一起。总线架构还可以将诸如***设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。处理器1200负责管理总线架构和通常的处理，存储器1201可以存储处理器1200在执行操作时所使用的数据。The bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1200 and various circuits of the memory represented by the memory 1201 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein. The bus interface provides the interface. The processor 1200 is responsible for managing the bus architecture and general processing, and the memory 1201 can store data used by the processor 1200 when performing operations.

本申请实施例揭示的流程，可以应用于处理器1200中，或者由处理器1200实现。在实现过程中，信号处理流程的各步骤可以通过处理器1200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1200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模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器1201，处理器1200读取存储器1201中的信息，结合其硬件完成信号处理流程的步骤。The process disclosed in the embodiment of the present application may be applied to the processor 1200 or implemented by the processor 1200. In the implementation process, each step of the signal processing flow can be completed by an integrated logic circuit of hardware in the processor 1200 or instructions in the form of software. The processor 1200 may 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 transistor logic device, a discrete hardware component, and may implement or execute the The disclosed methods, steps and logic block diagrams. The general-purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor. The software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory 1201, and the processor 1200 reads the information in the memory 1201, and completes the steps of the signal processing flow in combination with its hardware.

其中，处理器1200，用于读取存储器1201中的程序并执行下列过程：Wherein, the processor 1200 is configured to read a program in the memory 1201 and execute the following process:

可选的，处理器还用于：Optionally, the processor is also used to:

基于相同的发明构思，本申请实施例中还提供了一种中间会话管理功能I-SMF确定设备，由于该设备即是本申请实施例中的方法中的设备，并且该设备解决问题的原理与该方法相似，因此该设备的实施可以参见方法的实施，重复之处不再赘述。Based on the same inventive concept, an intermediate session management function I-SMF determination device is also provided in the embodiment of the present application. This device is the device in the method in the embodiment of the present application, and the principle of the device to solve the problem is the same as The method is similar, so the implementation of the device can refer to the implementation of the method, and the repetition will not be repeated.

如图13所示，本申请实施例提供的一种中间会话管理功能I-SMF确定设备，应用于应用功能AF侧，该设备包括处理模块1301和发送模块1302，其中，As shown in FIG. 13, an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the application function AF side. The device includes a processing module 1301 and a sending module 1302, where:

处理模块1301，用于创建请求信息，请求信息中包含移动边缘计算MEC应用信息，请求信息用于指示接入与移动性管理AMF或者会话管理功能SMF在选择I-SMF时，基于MEC应用信息选择I-SMF。The processing module 1301 is used to create request information. The request information contains mobile edge computing MEC application information. The request information is used to indicate access and mobility management AMF or session management function SMF. When I-SMF is selected, the selection is based on MEC application information I-SMF.

发送模块1302，用于向网络开放功能NEF或者策略控制功能PCF发送请求信息。The sending module 1302 is used to send request information to the network opening function NEF or the policy control function PCF.

如图14所示，本申请实施例提供的一种中间会话管理功能I-SMF确定设备，应用于策略控制功能PCF侧，该设备包括获取模块1401，处理模块1402和发送模块1403，其中，As shown in FIG. 14, an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the PCF side of the policy control function. The device includes an acquisition module 1401, a processing module 1402, and a sending module 1403. Among them,

获取模块1401，用于获取应用功能AF发送的请求信息，请求信息中包含移动边缘计算MEC应用信息，请求信息用于指示接入与移动性管理AMF或者会话管理功能SMF在选择I-SMF时，基于MEC应用信息选择I-SMF；The obtaining module 1401 is used to obtain request information sent by the application function AF. The request information includes mobile edge computing MEC application information. The request information is used to indicate the access and mobility management AMF or the session management function SMF when the I-SMF is selected, Select I-SMF based on MEC application information;

处理模块1402，用于根据请求信息，生成包含MEC应用信息的策略控制和计费PCC规则；The processing module 1402 is configured to generate policy control and charging PCC rules containing MEC application information according to the request information;

发送模块1403，用于将PCC规则发送至会话管理功能SMF。The sending module 1403 is used to send the PCC rules to the session management function SMF.

如图15所示，本申请实施例提供的一种中间会话管理功能I-SMF确定设备，应用于会话管理功能SMF侧，该设备包括接收模块1501，第一处理模块1502和第二处理模块1503，其中，As shown in FIG. 15, an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the session management function SMF side. The device includes a receiving module 1501, a first processing module 1502, and a second processing module 1503. ,among them,

接收模块1501，用于接收策略控制功能PCF发送的PCC规则，PCC规则中包含移动边缘计算MEC应用信息；The receiving module 1501 is used to receive the PCC rules sent by the policy control function PCF, and the PCC rules include mobile edge computing MEC application information;

第一处理模块1502，用于在确定PCC规则中包含的MEC应用信息为第一类MEC应用信息时，基于第一类MEC应用信息，生成I-SMF选择指示信息，并将I-SMF选择指示信息发送至接入与移动性管理功能AMF，I-SMF选择指示信息用于指示AMF在选择I-SMF时基于第一类MEC应用信息确定I-SMF；The first processing module 1502 is configured to, when it is determined that the MEC application information contained in the PCC rule is the first type of MEC application information, generate I-SMF selection indication information based on the first type of MEC application information, and indicate the I-SMF selection The information is sent to the access and mobility management function AMF, and the I-SMF selection indication information is used to instruct AMF to determine the I-SMF based on the first type of MEC application information when selecting the I-SMF;

第二处理模块1503，用于在确定PCC规则中包含的MEC应用信息为第二类MEC应用信息时，根据PCC规则中包含的第二类MEC应用信息在选择I-SMF时确定I-SMF，或者在包含第二类MEC应用信息的PCC规则中提取第二类MEC应用信息，将第二类MEC应用信息转发至接入与移动性管理功能AMF。The second processing module 1503 is used to determine the I-SMF when the I-SMF is selected according to the second type of MEC application information contained in the PCC rule when it is determined that the MEC application information contained in the PCC rule is the second type of MEC application information, Or, extract the second-type MEC application information from the PCC rule containing the second-type MEC application information, and forward the second-type MEC application information to the access and mobility management function AMF.

如图16所示，本申请实施例提供的一种中间会话管理功能I-SMF确定设备，应用于接入与移动性管理功能AMF侧，该设备包括第一接收模块1601和第一确定模块1602，其中，As shown in FIG. 16, an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the access and mobility management function AMF side. The device includes a first receiving module 1601 and a first determining module 1602 ,among them,

第一接收模块1601，用于接收会话管理功能SMF发送的I-SMF选择指示信息，I-SMF选择指示信息中包含第一类MEC应用信息；The first receiving module 1601 is configured to receive I-SMF selection indication information sent by the session management function SMF, and the I-SMF selection indication information includes the first type of MEC application information;

第一确定模块1602，用于根据第一类MEC应用信息在选择I-SMF时确定I-SMF。The first determining module 1602 is configured to determine the I-SMF when the I-SMF is selected according to the MEC application information of the first type.

可选的，设备还包括：Optionally, the equipment also includes:

第二接收模块1603，用于接收SMF发送的第二类MEC应用信息；The second receiving module 1603 is configured to receive the second type of MEC application information sent by the SMF;

第二确定模块1604，用于根据第二类MEC应用信息在选择I-SMF时确定I-SMF。The second determining module 1604 is configured to determine the I-SMF when the I-SMF is selected according to the second type of MEC application information.

本申请实施例还提供一种计算机可读非易失性存储介质，包括程序代码，当程序代码在计算终端上运行时，程序代码用于使计算终端执行上述本申请实施例中间会话管理功能I-SMF确定方法的步骤。An embodiment of the present application also provides a computer-readable non-volatile storage medium, including program code. When the program code runs on a computing terminal, the program code is used to enable the computing terminal to perform the above-mentioned intermediate session management function of the embodiment of the present application. -SMF determines the steps of the method.

以上参照示出根据本申请实施例的方法、装置(***)和/或计算机程序产品的框图和/或流程图描述本申请。应理解，可以通过计算机程序指令来实现框图和/或流程图示图的一个块以及框图和/或流程图示图的块的组合。可以将这些计算机程序指令提供给通用计算机、专用计算机的处理器和/或其它可编程数据处理装置，以产生机器，使得经由计算机处理器和/或其它可编程数据处理装置执行的指令创建用于实现框图和/或流程图块中所指定的功能/动作的方法。The foregoing describes the present application with reference to block diagrams and/or flowcharts illustrating methods, devices (systems) and/or computer program products according to embodiments of the present application. It should be understood that one block of the block diagram and/or flowchart diagram and a combination of the blocks in the block diagram and/or flowchart diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, and/or other programmable data processing devices to produce a machine, so that the instructions executed via the computer processor and/or other programmable data processing device are created for A method of implementing the functions/actions specified in the block diagrams and/or flowchart blocks.

相应地，还可以用硬件和/或软件(包括固件、驻留软件、微码等)来实施本申请。更进一步地，本申请可以采取计算机可使用或计算机可读存储介质上的计算机程序产品的形式，其具有在介质中实现的计算机可使用或计算机可读程序代码，以由指令执行***来使用或结合指令执行***而使用。在本申请上下文中，计算机可使用或计算机可读介质可以是任意介质，其可以包含、存储、通信、传输、或传送程序，以由指令执行***、装置或设备使用，或结合指令执行***、装置或设备使用。Correspondingly, this application can also be implemented by hardware and/or software (including firmware, resident software, microcode, etc.). Furthermore, this application may take the form of a computer program product on a computer-usable or computer-readable storage medium, which has a computer-usable or computer-readable program code implemented in the medium to be used or used by the instruction execution system. Used in conjunction with the instruction execution system. In the context of this application, a computer-usable or computer-readable medium can be any medium that can contain, store, communicate, transmit, or transmit a program for use by an instruction execution system, apparatus, or device, or in combination with an instruction execution system, Device or equipment use.

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。Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these modifications and variations.

Claims

一种中间会话管理功能I-SMF确定方法，应用于应用功能AF侧，其特征在于，该方法包括：A method for determining an intermediate session management function I-SMF, applied to the application function AF side, is characterized in that the method includes:

创建请求信息，所述请求信息中包含移动边缘计算MEC应用信息，所述请求信息用于指示接入与移动性管理AMF或者会话管理功能SMF在选择I-SMF时，基于所述MEC应用信息选择I-SMF；Create request information, the request information contains mobile edge computing MEC application information, and the request information is used to instruct the access and mobility management AMF or the session management function SMF to select the I-SMF based on the MEC application information I-SMF;

向网络开放功能NEF或者策略控制功能PCF发送所述请求信息。Send the request information to the network opening function NEF or the policy control function PCF.
根据权利要求1所述的方法，其特征在于，所述MEC应用信息包括以下一种或多种：MEC对应的数据网接入标识符DNAI、MEC服务器地址、MEC应用服务器地址、MEC应用属性信息；The method according to claim 1, wherein the MEC application information includes one or more of the following: data network access identifier DNAI corresponding to the MEC, MEC server address, MEC application server address, MEC application attribute information ；

其中，所述MEC应用属性信息包括MEC应用、MEC应用实例的分布、服务能力、服务类型、负载、生命周期。Wherein, the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
一种中间会话管理功能I-SMF确定方法，应用于策略控制功能PCF侧，其特征在于，该方法包括：A method for determining an intermediate session management function I-SMF, applied to the PCF side of the policy control function, is characterized in that the method includes:

获取应用功能AF发送的请求信息，所述请求信息中包含移动边缘计算MEC应用信息，所述请求信息用于指示接入与移动性管理AMF或者会话管理功能SMF在选择I-SMF时，基于所述MEC应用信息选择I-SMF；Acquire request information sent by the application function AF, the request information contains mobile edge computing MEC application information, and the request information is used to instruct the access and mobility management AMF or the session management function SMF to select I-SMF based on all The MEC application information selects I-SMF;

根据所述请求信息，生成包含所述MEC应用信息的策略控制和计费PCC规则；According to the request information, generate policy control and charging PCC rules containing the MEC application information;

将所述PCC规则发送至会话管理功能SMF。The PCC rule is sent to the session management function SMF.
根据权利要求3所述的方法，其特征在于，所述MEC应用信息包括以下一种或多种：MEC对应的数据网接入标识符DNAI、MEC服务器地址、MEC应用服务器地址、MEC应用属性信息；The method according to claim 3, wherein the MEC application information includes one or more of the following: data network access identifier DNAI corresponding to the MEC, MEC server address, MEC application server address, MEC application attribute information ；

其中，所述MEC应用属性信息包括MEC应用、MEC应用实例的分布、服务能力、服务类型、负载、以及生命周期。Wherein, the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
一种中间会话管理功能I-SMF确定方法，应用于会话管理功能SMF 侧，其特征在于，该方法包括：A method for determining an intermediate session management function I-SMF, applied to the session management function SMF side, is characterized in that the method includes:

接收策略控制功能PCF发送的PCC规则，所述PCC规则中包含移动边缘计算MEC应用信息；Receiving PCC rules sent by the policy control function PCF, where the PCC rules include mobile edge computing MEC application information;

在确定所述PCC规则中包含的MEC应用信息为第一类MEC应用信息时，基于所述第一类MEC应用信息，生成I-SMF选择指示信息，并将所述I-SMF选择指示信息发送至接入与移动性管理功能AMF，所述I-SMF选择指示信息用于指示所述AMF在选择I-SMF时基于所述第一类MEC应用信息确定I-SMF；When it is determined that the MEC application information contained in the PCC rule is the first type of MEC application information, based on the first type of MEC application information, I-SMF selection indication information is generated, and the I-SMF selection indication information is sent To the access and mobility management function AMF, the I-SMF selection indication information is used to instruct the AMF to determine the I-SMF based on the first type of MEC application information when selecting the I-SMF;

在确定所述PCC规则中包含的MEC应用信息为第二类MEC应用信息时，根据所述PCC规则中包含的第二类MEC应用信息在选择I-SMF时确定I-SMF，或者在所述包含第二类MEC应用信息的PCC规则中提取所述第二类MEC应用信息，将所述第二类MEC应用信息转发至接入与移动性管理功能AMF。When it is determined that the MEC application information contained in the PCC rule is the second type of MEC application information, the I-SMF is determined when the I-SMF is selected according to the second type of MEC application information contained in the PCC rule, or the I-SMF is determined when the I-SMF is selected. The PCC rule containing the second type of MEC application information extracts the second type of MEC application information, and forwards the second type of MEC application information to the access and mobility management function AMF.
根据权利要求5所述的方法，其特征在于，所述第一类MEC应用信息为MEC对应的数据网接入标识符DNAI。The method according to claim 5, wherein the MEC application information of the first type is a data network access identifier DNAI corresponding to the MEC.
根据权利要求5所述的方法，其特征在于，所述第二类MEC应用信息包括以下一种或多种：MEC服务器地址、MEC应用服务器地址、MEC应用属性信息；The method according to claim 5, wherein the second type of MEC application information includes one or more of the following: MEC server address, MEC application server address, and MEC application attribute information;

其中，所述MEC应用属性信息包括MEC应用、MEC应用实例的分布、服务能力、服务类型、负载、以及生命周期。Wherein, the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
一种中间会话管理功能I-SMF确定方法，应用于接入与移动性管理功能AMF侧，其特征在于，该方法包括：A method for determining an intermediate session management function I-SMF, applied to the AMF side of the access and mobility management function, is characterized in that the method includes:

接收会话管理功能SMF发送的I-SMF选择指示信息，所述I-SMF选择指示信息中包含第一类MEC应用信息；Receiving I-SMF selection indication information sent by the session management function SMF, where the I-SMF selection indication information includes the MEC application information of the first type;

根据所述第一类MEC应用信息在选择I-SMF时确定I-SMF。The I-SMF is determined when the I-SMF is selected according to the MEC application information of the first type.
根据权利要求8所述的方法，其特征在于，所述第一类MEC应用信息为MEC对应的数据网接入标识符DNAI。The method according to claim 8, wherein the MEC application information of the first type is a data network access identifier DNAI corresponding to the MEC.
根据权利要求8所述的方法，其特征在于，所述方法还包括：The method according to claim 8, wherein the method further comprises:

接收SMF发送的第二类MEC应用信息；Receive the second type of MEC application information sent by SMF;

根据所述第二类MEC应用信息在选择I-SMF时确定I-SMF。The I-SMF is determined when the I-SMF is selected according to the second type of MEC application information.
根据权利要求10所述的方法，其特征在于，所述第二类MEC应用信息包括以下一种或多种：MEC服务器地址、MEC应用服务器地址、MEC应用属性信息；The method according to claim 10, wherein the second type of MEC application information includes one or more of the following: MEC server address, MEC application server address, and MEC application attribute information;

其中，所述MEC应用属性信息包括MEC应用、MEC应用实例的分布、服务能力、服务类型、负载、以及生命周期。Wherein, the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
一种中间会话管理功能I-SMF确定设备，应用于应用功能AF侧，其特征在于，该设备包括：处理器和存储器；An intermediate session management function I-SMF determination device applied to the application function AF side, characterized in that the device includes: a processor and a memory;

其中，处理器，用于读取存储器中的程序并执行下列过程：Among them, the processor is used to read the program in the memory and execute the following process:

创建请求信息，所述请求信息中包含移动边缘计算MEC应用信息，所述请求信息用于指示接入与移动性管理AMF或者会话管理功能SMF在选择I-SMF时，基于所述MEC应用信息选择I-SMF；Create request information, the request information contains mobile edge computing MEC application information, and the request information is used to instruct the access and mobility management AMF or the session management function SMF to select the I-SMF based on the MEC application information I-SMF;

向网络开放功能NEF或者策略控制功能PCF发送所述请求信息。Send the request information to the network opening function NEF or the policy control function PCF.
如权利要求12所述的设备，其特征在于，所述MEC应用信息包括以下一种或多种：MEC对应的数据网接入标识符DNAI、MEC服务器地址、MEC应用服务器地址、MEC应用属性信息；The device according to claim 12, wherein the MEC application information includes one or more of the following: data network access identifier DNAI corresponding to the MEC, MEC server address, MEC application server address, MEC application attribute information ；

其中，所述MEC应用属性信息包括MEC应用、MEC应用实例的分布、服务能力、服务类型、负载、生命周期。Wherein, the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
一种中间会话管理功能I-SMF确定设备，应用于策略控制功能PCF侧，其特征在于，该设备包括：处理器和存储器；An intermediate session management function I-SMF determination device applied to the PCF side of the policy control function, characterized in that the device includes: a processor and a memory;

其中，处理器，用于读取存储器中的程序并执行下列过程：Among them, the processor is used to read the program in the memory and execute the following process:

获取应用功能AF发送的请求信息，所述请求信息中包含移动边缘计算MEC应用信息，所述请求信息用于指示接入与移动性管理AMF或者会话管理功能SMF在选择I-SMF时，基于所述MEC应用信息选择I-SMF；Acquire request information sent by the application function AF, the request information contains mobile edge computing MEC application information, and the request information is used to instruct the access and mobility management AMF or the session management function SMF to select I-SMF based on all The MEC application information selects I-SMF;

根据所述请求信息，生成包含所述MEC应用信息的策略控制和计费PCC规则；According to the request information, generate policy control and charging PCC rules containing the MEC application information;

将所述PCC规则发送至会话管理功能SMF。The PCC rule is sent to the session management function SMF.
根据权利要求14所述的设备，其特征在于，所述MEC应用信息包括以下一种或多种：MEC对应的数据网接入标识符DNAI、MEC服务器地址、MEC应用服务器地址、MEC应用属性信息；The device according to claim 14, wherein the MEC application information includes one or more of the following: data network access identifier DNAI corresponding to the MEC, MEC server address, MEC application server address, MEC application attribute information ；

其中，所述MEC应用属性信息包括MEC应用、MEC应用实例的分布、服务能力、服务类型、负载、以及生命周期。Wherein, the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
一种中间会话管理功能I-SMF确定设备，应用于会话管理功能SMF侧，其特征在于，该设备包括：处理器和存储器；An intermediate session management function I-SMF determination device, applied to the session management function SMF side, and is characterized in that the device includes: a processor and a memory;

其中，处理器，用于读取存储器中的程序并执行下列过程：Among them, the processor is used to read the program in the memory and execute the following process:

接收策略控制功能PCF发送的PCC规则，所述PCC规则中包含移动边缘计算MEC应用信息；Receiving PCC rules sent by the policy control function PCF, where the PCC rules include mobile edge computing MEC application information;

在确定所述PCC规则中包含的MEC应用信息为第一类MEC应用信息时，基于所述第一类MEC应用信息，生成I-SMF选择指示信息，并将所述I-SMF选择指示信息发送至接入与移动性管理功能AMF，所述I-SMF选择指示信息用于指示所述AMF在选择I-SMF时基于所述第一类MEC应用信息确定I-SMF；When it is determined that the MEC application information contained in the PCC rule is the first type of MEC application information, based on the first type of MEC application information, I-SMF selection indication information is generated, and the I-SMF selection indication information is sent To the access and mobility management function AMF, the I-SMF selection indication information is used to instruct the AMF to determine the I-SMF based on the first type of MEC application information when selecting the I-SMF;

在确定所述PCC规则中包含的MEC应用信息为第二类MEC应用信息时，根据所述PCC规则中包含的第二类MEC应用信息在选择I-SMF时确定I-SMF，或者在所述包含第二类MEC应用信息的PCC规则中提取所述第二类MEC应用信息，将所述第二类MEC应用信息转发至接入与移动性管理功能AMF。When it is determined that the MEC application information contained in the PCC rule is the second type of MEC application information, the I-SMF is determined when the I-SMF is selected according to the second type of MEC application information contained in the PCC rule, or the I-SMF is determined when the I-SMF is selected. The PCC rule containing the second type of MEC application information extracts the second type of MEC application information, and forwards the second type of MEC application information to the access and mobility management function AMF.
根据权利要求16所述的设备，其特征在于，所述第一类MEC应用信息为MEC对应的数据网接入标识符DNAI。The device according to claim 16, wherein the MEC application information of the first type is a data network access identifier DNAI corresponding to the MEC.
根据权利要求16所述的设备，其特征在于，所述第二类MEC应用信息包括以下一种或多种：MEC服务器地址、MEC应用服务器地址、MEC应用属性信息；The device according to claim 16, wherein the second type of MEC application information includes one or more of the following: MEC server address, MEC application server address, and MEC application attribute information;

其中，所述MEC应用属性信息包括MEC应用、MEC应用实例的分布、服务能力、服务类型、负载、以及生命周期。Wherein, the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
一种中间会话管理功能I-SMF确定设备，应用于接入与移动性管理功能AMF侧，其特征在于，该设备包括：处理器和存储器；An intermediate session management function I-SMF determination device applied to the access and mobility management function AMF side, characterized in that the device includes: a processor and a memory;

其中，处理器，用于读取存储器中的程序并执行下列过程：Among them, the processor is used to read the program in the memory and execute the following process:

接收会话管理功能SMF发送的I-SMF选择指示信息，所述I-SMF选择指示信息中包含第一类MEC应用信息；Receiving I-SMF selection indication information sent by the session management function SMF, where the I-SMF selection indication information includes the MEC application information of the first type;

根据所述第一类MEC应用信息在选择I-SMF时确定I-SMF。The I-SMF is determined when the I-SMF is selected according to the MEC application information of the first type.
根据权利要求19所述的设备，其特征在于，所述第一类MEC应用信息为MEC对应的数据网接入标识符DNAI。The device according to claim 19, wherein the MEC application information of the first type is a data network access identifier DNAI corresponding to the MEC.
根据权利要求19所述的设备，其特征在于，所述处理器还用于：The device according to claim 19, wherein the processor is further configured to:

接收SMF发送的第二类MEC应用信息；Receive the second type of MEC application information sent by SMF;

根据所述第二类MEC应用信息在选择I-SMF时确定I-SMF。The I-SMF is determined when the I-SMF is selected according to the second type of MEC application information.
根据权利要求21所述的设备，其特征在于，所述第二类MEC应用信息包括以下一种或多种：MEC服务器地址、MEC应用服务器地址、MEC应用属性信息；The device according to claim 21, wherein the second type of MEC application information includes one or more of the following: MEC server address, MEC application server address, MEC application attribute information;

其中，所述MEC应用属性信息包括MEC应用、MEC应用实例的分布、服务能力、服务类型、负载、以及生命周期。Wherein, the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
一种中间会话管理功能I-SMF确定设备，应用于应用功能AF侧，其特征在于，该设备包括处理模块和发送模块，其中，An intermediate session management function I-SMF determination device applied to the application function AF side, characterized in that the device includes a processing module and a sending module, wherein,

所述处理模块，用于创建请求信息，所述请求信息中包含移动边缘计算MEC应用信息，所述请求信息用于指示接入与移动性管理AMF或者会话管理功能SMF在选择I-SMF时，基于所述MEC应用信息选择I-SMF；The processing module is configured to create request information, the request information includes mobile edge computing MEC application information, and the request information is used to indicate access and mobility management AMF or session management function SMF when I-SMF is selected, Selecting I-SMF based on the MEC application information;

所述发送模块，用于向网络开放功能NEF或者策略控制功能PCF发送所述请求信息。The sending module is used to send the request information to the network opening function NEF or the policy control function PCF.
根据权利要求23所述的设备，其特征在于，所述MEC应用信息包括以下一种或多种：MEC对应的数据网接入标识符DNAI、MEC服务器地址、MEC应用服务器地址、MEC应用属性信息；The device according to claim 23, wherein the MEC application information includes one or more of the following: a data network access identifier DNAI corresponding to the MEC, an MEC server address, an MEC application server address, and MEC application attribute information ；

其中，所述MEC应用属性信息包括MEC应用、MEC应用实例的分布、服务能力、服务类型、负载、生命周期。Wherein, the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
一种中间会话管理功能I-SMF确定设备，应用于策略控制功能PCF侧，其特征在于，该设备包括获取模块，处理模块和发送模块，其中，An intermediate session management function I-SMF determination device applied to the PCF side of the policy control function, characterized in that the device includes an acquisition module, a processing module, and a sending module, wherein:

所述获取模块，用于获取应用功能AF发送的请求信息，所述请求信息中包含移动边缘计算MEC应用信息，所述请求信息用于指示接入与移动性管理AMF或者会话管理功能SMF在选择I-SMF时，基于所述MEC应用信息选择I-SMF；The acquiring module is configured to acquire request information sent by the application function AF, the request information includes mobile edge computing MEC application information, and the request information is used to indicate that the access and mobility management AMF or the session management function SMF is in the selection process. In the case of I-SMF, select I-SMF based on the MEC application information;

所述处理模块，用于根据所述请求信息，生成包含所述MEC应用信息的策略控制和计费PCC规则；The processing module is configured to generate a policy control and charging PCC rule containing the MEC application information according to the request information;

所述发送模块，用于将所述PCC规则发送至会话管理功能SMF。The sending module is used to send the PCC rule to the session management function SMF.
根据权利要求25所述的设备，其特征在于，所述MEC应用信息包括以下一种或多种：MEC对应的数据网接入标识符DNAI、MEC服务器地址、MEC应用服务器地址、MEC应用属性信息；The device according to claim 25, wherein the MEC application information includes one or more of the following: data network access identifier DNAI corresponding to the MEC, MEC server address, MEC application server address, MEC application attribute information ；

其中，所述MEC应用属性信息包括MEC应用、MEC应用实例的分布、服务能力、服务类型、负载、以及生命周期。Wherein, the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
一种中间会话管理功能I-SMF确定设备，应用于会话管理功能SMF侧，其特征在于，该设备包括接收模块，第一处理模块和第二处理模块，其中，An intermediate session management function I-SMF determination device applied to the session management function SMF side, characterized in that the device includes a receiving module, a first processing module, and a second processing module, wherein:

所述接收模块，用于接收策略控制功能PCF发送的PCC规则，所述PCC规则中包含移动边缘计算MEC应用信息；The receiving module is configured to receive PCC rules sent by the policy control function PCF, where the PCC rules include mobile edge computing MEC application information;

所述第一处理模块，用于在确定所述PCC规则中包含的MEC应用信息为第一类MEC应用信息时，基于所述第一类MEC应用信息，生成I-SMF选择指示信息，并将所述I-SMF选择指示信息发送至接入与移动性管理功能AMF，所述I-SMF选择指示信息用于指示所述AMF在选择I-SMF时基于所述第一类MEC应用信息确定I-SMF；The first processing module is configured to generate I-SMF selection indication information based on the first type of MEC application information when it is determined that the MEC application information contained in the PCC rule is the first type of MEC application information, and The I-SMF selection indication information is sent to the access and mobility management function AMF, and the I-SMF selection indication information is used to instruct the AMF to determine the I based on the first type of MEC application information when selecting I-SMF. -SMF;

所述第二处理模块，用于在确定所述PCC规则中包含的MEC应用信息为第二类MEC应用信息时，根据所述PCC规则中包含的第二类MEC应用信息在选择I-SMF时确定I-SMF，或者在所述包含第二类MEC应用信息的PCC规则中提取所述第二类MEC应用信息，将所述第二类MEC应用信息转发至接入与移动性管理功能AMF。The second processing module is configured to, when it is determined that the MEC application information contained in the PCC rule is the second type of MEC application information, when the I-SMF is selected according to the second type of MEC application information contained in the PCC rule Determine the I-SMF, or extract the second type of MEC application information from the PCC rule containing the second type of MEC application information, and forward the second type of MEC application information to the access and mobility management function AMF.
根据权利要求27所述的设备，其特征在于，所述第一类MEC应用信息为MEC对应的数据网接入标识符DNAI。The device according to claim 27, wherein the MEC application information of the first type is a data network access identifier DNAI corresponding to the MEC.
根据权利要求27所述的设备，其特征在于，所述第二类MEC应用信息包括以下一种或多种：MEC服务器地址、MEC应用服务器地址、MEC应用属性信息；The device according to claim 27, wherein the second type of MEC application information includes one or more of the following: MEC server address, MEC application server address, and MEC application attribute information;

其中，所述MEC应用属性信息包括MEC应用、MEC应用实例的分布、服务能力、服务类型、负载、以及生命周期。Wherein, the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
一种中间会话管理功能I-SMF确定设备，应用于接入与移动性管理功能AMF侧，其特征在于，该设备包括第一接收模块和第一确定模块，其中，An intermediate session management function I-SMF determination device applied to the access and mobility management function AMF side, characterized in that the device includes a first receiving module and a first determining module, wherein:

所述第一接收模块，用于接收会话管理功能SMF发送的I-SMF选择指示信息，所述I-SMF选择指示信息中包含第一类MEC应用信息；The first receiving module is configured to receive I-SMF selection indication information sent by a session management function SMF, where the I-SMF selection indication information includes first-type MEC application information;

所述第一确定模块，用于根据所述第一类MEC应用信息在选择I-SMF时确定I-SMF。The first determining module is configured to determine the I-SMF when selecting the I-SMF according to the MEC application information of the first type.
根据权利要求30所述的设备，其特征在于，所述第一类MEC应用信息为MEC对应的数据网接入标识符DNAI。The device according to claim 30, wherein the MEC application information of the first type is a data network access identifier DNAI corresponding to the MEC.
根据权利要求30所述的设备，其特征在于，所述设备还包括：The device according to claim 30, wherein the device further comprises:

第二接收模块，用于接收SMF发送的第二类MEC应用信息；The second receiving module is configured to receive the second type of MEC application information sent by the SMF;

第二确定模块，用于根据所述第二类MEC应用信息在选择I-SMF时确定I-SMF。The second determining module is configured to determine the I-SMF when selecting the I-SMF according to the second type of MEC application information.
根据权利要求32所述的设备，其特征在于，所述第二类MEC应用信息包括以下一种或多种：MEC服务器地址、MEC应用服务器地址、MEC应用属性信息；The device according to claim 32, wherein the second type of MEC application information includes one or more of the following: MEC server address, MEC application server address, and MEC application attribute information;

其中，所述MEC应用属性信息包括MEC应用、MEC应用实例的分布、服务能力、服务类型、负载、以及生命周期。Wherein, the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
一种计算机存储介质，其上存储有计算机程序，其特征在于，该程序被处理器执行时实现如权利要求1～11任一所述的方法的步骤。A computer storage medium having a computer program stored thereon, wherein the program is executed by a processor to realize the steps of the method according to any one of claims 1-11.