WO2022206662A1

WO2022206662A1 - Method and apparatus for determining establishment of relay pdu session, and user equipment

Info

Publication number: WO2022206662A1
Application number: PCT/CN2022/083315
Authority: WO
Inventors: 王文; 谢振华; 柯小婉
Original assignee: 维沃移动通信有限公司
Priority date: 2021-04-01
Filing date: 2022-03-28
Publication date: 2022-10-06
Also published as: CN115190562A

Abstract

The present application belongs to the technical field of communications, and discloses a method and apparatus for determining establishment of a relay PDU session, and a user equipment (UE). The method in the embodiments of the present application comprises: a relay UE receiving first information, which is sent by a remote UE, wherein the first information is used for determining a user equipment routing selection policy (URSP); the relay UE determining the URSP according to the first information; the relay UE determining, on the basis of a PDU session parameter, a routing descriptor that matches the URSP; and the relay UE determining whether there is a relay PDU session matching the routing descriptor, wherein the relay PDU session is a PDU session for the relay UE to forward service data of the remote UE.

Description

中继PDU会话建立的确定方法及装置、终端Method, device and terminal for determining relay PDU session establishment

相关申请的交叉引用CROSS-REFERENCE TO RELATED APPLICATIONS

本申请主张在2021年04月01日在中国提交的中国专利申请No.202110358431.5的优先权，其全部内容通过引用包含于此。This application claims priority to Chinese Patent Application No. 202110358431.5 filed in China on Apr. 01, 2021, the entire contents of which are hereby incorporated by reference.

技术领域technical field

本申请属于通信技术领域，具体涉及一种中继PDU会话建立的确定方法及装置、终端。The present application belongs to the field of communication technologies, and in particular relates to a method, a device, and a terminal for determining the establishment of a relay PDU session.

背景技术Background technique

现有技术中，对于中继终端(relay UE)在发现阶段，会发出多个不同的中继服务码(relay service code)，其中，一个中继服务码对应的数据协议单元(Protocol Data Unit，PDU)会话参数对应有多个业务描述符。因此，中继终端无法确定对应的PDU会话参数(如路由描述符)或者用户终端路由选择策略(User Equipment Routing Selection Policy，URSP)，导致后续无法建立中继PDU会话。In the prior art, for a relay terminal (relay UE) in the discovery phase, a plurality of different relay service codes (relay service codes) will be issued, wherein, a data protocol unit (Protocol Data Unit) corresponding to a relay service code (Protocol Data Unit, PDU) session parameters correspond to multiple service descriptors. Therefore, the relay terminal cannot determine the corresponding PDU session parameters (such as routing descriptors) or the user terminal routing selection policy (User Equipment Routing Selection Policy, URSP), resulting in the subsequent failure to establish a relay PDU session.

发明内容SUMMARY OF THE INVENTION

本申请实施例提供一种中继PDU会话建立的确定方法及装置、终端，能够解决现有技术中中继终端无法确定路由描述符或者URSP，导致后续无法建立中继PDU会话的问题。The embodiments of the present application provide a method, device, and terminal for determining the establishment of a relay PDU session, which can solve the problem in the prior art that a relay terminal cannot determine a route descriptor or a URSP, resulting in failure to establish a relay PDU session subsequently.

第一方面，提供了一种中继数据协议单元PDU会话建立的确定方法，包括：中继终端接收远端终端发送的第一信息，其中，所述第一信息用于确定用户终端路由选择策略URSP；所述中继终端根据所述第一信息确定所述URSP；所述中继终端基于PDU会话参数确定与所述URSP匹配的路由描述符；所述中继终端确定是否存在与所述路由描述符匹配的中继PDU会话；其中，所述中继PDU会话为所述中继终端中继转发所述远端终端的业务数据的PDU会话。A first aspect provides a method for determining the establishment of a relay data protocol unit PDU session, including: a relay terminal receiving first information sent by a remote terminal, where the first information is used to determine a user terminal routing strategy URSP; the relay terminal determines the URSP according to the first information; the relay terminal determines a route descriptor matching the URSP based on the PDU session parameter; the relay terminal determines whether there is a route descriptor that matches the URSP A relay PDU session whose descriptor matches; wherein, the relay PDU session is a PDU session in which the relay terminal relays and forwards the service data of the remote terminal.

第二方面，提供了一种中继PDU会话建立的确定方法，包括：远端终端向中继终端发送第一信息，其中，所述第一信息用于确定用户终端路由选择策略URSP：In a second aspect, a method for determining the establishment of a relay PDU session is provided, including: a remote terminal sending first information to a relay terminal, where the first information is used to determine a user terminal routing policy URSP:

第三方面，提供了一种中继PDU会话建立的确定装置，应用中继终端，包括：第一接收模块，用于接收远端终端发送的第一信息，其中，所述第一信息用于确定用户终端路由选择策略URSP；第一确定模块，用于根据所述第一信息确定所述URSP；第二确定模块，用于基于PDU会话参数确定与所述URSP匹配的路由描述符；第三确定模块，用于确定是否存在与所述路由描述符匹配的中继PDU会话；其中，所述中继PDU会话为所述中继终端中继转发所述远端终端的业务数据的PDU会话。In a third aspect, a device for determining establishment of a relay PDU session is provided, applied to a relay terminal, including: a first receiving module configured to receive first information sent by a remote terminal, wherein the first information is used for determining a user terminal routing policy URSP; a first determining module, configured to determine the URSP according to the first information; a second determining module, configured to determine a route descriptor matching the URSP based on the PDU session parameters; a third A determining module, configured to determine whether there is a relay PDU session matching the routing descriptor; wherein, the relay PDU session is a PDU session in which the relay terminal relays and forwards the service data of the remote terminal.

第四方面，提供了一种中继PDU会话建立的确定装置，应用于远端终端，包括：第一发送模块，用于向中继终端发送第一信息，其中，所述第一信息用于确定用户终端路由选择策略URSP。In a fourth aspect, a device for determining relay PDU session establishment is provided, applied to a remote terminal, including: a first sending module configured to send first information to the relay terminal, wherein the first information is used for Determine the user terminal routing policy URSP.

第五方面，提供了一种终端，该终端包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第一方面所述的方法的步骤。In a fifth aspect, a terminal is provided, the terminal includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor, when the program or instruction is executed by the processor The steps of implementing the method as described in the first aspect.

第六方面，提供了一种终端，包括处理器及通信接口，其中，通信接口用于接收远端终端发送的第一信息，其中，所述第一信息用于确定用户终端路由选择策略URSP；处理器用于根据所述第一信息确定所述URSP，并基于PDU会话参数确定与所述URSP匹配的路由描述符，以及确定是否存在与所述路由描述符匹配的中继PDU会话；其中，所述中继PDU会话为所述中继终端中继转发所述远端终端的业务数据的PDU会话。In a sixth aspect, a terminal is provided, including a processor and a communication interface, wherein the communication interface is used to receive first information sent by a remote terminal, wherein the first information is used to determine a user terminal routing policy URSP; The processor is configured to determine the URSP according to the first information, determine a route descriptor matching the URSP based on the PDU session parameters, and determine whether there is a relay PDU session that matches the route descriptor; The relay PDU session is a PDU session in which the relay terminal relays and forwards the service data of the remote terminal.

第七方面，提供了一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如第一方面所述的方法的步骤，或者实现如第二方面所述的方法的步骤。In a seventh aspect, a readable storage medium is provided, and a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect, or the The steps of the method of the second aspect.

第八方面，提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如第…方面所述的方法，或实现如第二方面所述的方法。In an eighth aspect, a chip is provided, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement the method according to the aspect , or implement the method described in the second aspect.

第九方面，提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在非易失的存储介质中，所述程序/程序产品被至少一个处理器执行以实现如第一方面所述的方法步骤，或实现如第二方面所述的方法步骤。In a ninth aspect, a computer program/program product is provided, the computer program/program product is stored in a non-volatile storage medium, and the program/program product is executed by at least one processor to implement the first aspect The method steps described, or the method steps described in the second aspect are implemented.

第十方面，本申请实施例提供一种通信设备，被配置为执行以实现如第一方面所述的方法步骤，或实现如第二方面所述的方法步骤。In a tenth aspect, an embodiment of the present application provides a communication device configured to be executed to implement the method steps described in the first aspect, or the method steps described in the second aspect.

在本申请实施例中，中继终端可以根据接收到的第一信息确定对应的URSP，进而根据会话参数确定与该URSP匹配的路由描述符，进而根据该路由描述符确定是否存在匹配的中继PDU会话。可见，通过本申请实施例，中继终端可以确定URSP及其对应的路由描述符，即确定了后续中继PDU会话建立的依据，从而解决了现有技术中中继终端无法确定路由描述符或者URSP，导致后续无法建立中继PDU会话的问题。In this embodiment of the present application, the relay terminal may determine the corresponding URSP according to the received first information, and then determine the routing descriptor matching the URSP according to the session parameters, and then determine whether there is a matching relay according to the routing descriptor. PDU session. It can be seen that through the embodiments of the present application, the relay terminal can determine the URSP and its corresponding routing descriptor, that is, the basis for establishing the subsequent relay PDU session, thus solving the problem that the relay terminal cannot determine the routing descriptor or the routing descriptor in the prior art. URSP, resulting in the subsequent failure to establish a relay PDU session.

附图说明Description of drawings

图1示出本申请实施例可应用的一种无线通信***的框图；FIG. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application can be applied;

图2是本申请实施例的L3的建立过程的流程图；2 is a flowchart of an L3 establishment process according to an embodiment of the present application;

图3是本申请实施例的中继PDU会话建立的确定方法的流程图之一；3 is one of the flowcharts of the method for determining the establishment of a relay PDU session according to an embodiment of the present application;

图4是本申请实施例的中继PDU会话建立的确定方法的流程图之二；4 is the second flowchart of the method for determining the establishment of a relay PDU session according to an embodiment of the present application;

图5是本申请实施例的中继PDU会话的建立流程图；FIG. 5 is a flowchart of the establishment of a relay PDU session according to an embodiment of the present application;

图6是本申请实施例的中继PDU会话建立的确定装置的结构示意图之一；6 is one of the schematic structural diagrams of the apparatus for determining the establishment of a relay PDU session according to an embodiment of the present application;

图7是本申请实施例的中继PDU会话建立的确定方法的结构示意图之二；7 is the second schematic structural diagram of the method for determining the establishment of a relay PDU session according to an embodiment of the present application;

图8是本申请实施例的通信设备的结构示意图；8 is a schematic structural diagram of a communication device according to an embodiment of the present application;

图9是本申请实施例的终端的结构示意图。FIG. 9 is a schematic structural diagram of a terminal according to an embodiment of the present application.

具体实施方式Detailed ways

下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚描述，显然，所描述的实施例是本申请一部分实施例，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所获得的所有其他实施例，都属于本申请保护的范围。The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art fall within the protection scope of this application.

本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”所区别的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”一般表示前后关联对象是一种“或”的关系。The terms "first", "second" and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first", "second" distinguishes Usually it is a class, and the number of objects is not limited. For example, the first object may be one or multiple. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the associated objects are in an "or" relationship.

值得指出的是，本申请实施例所描述的技术不限于长期演进型(Long Term Evolution，LTE)/LTE的演进(LTE-Advanced，LTE-A)***，还可用于其他无线通信***，诸如码分多址(Code Division Multiple Access，CDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single-carrier Frequency-Division Multiple Access，SC-FDMA)和其他***。本申请实施例中的术语“***”和“网络”常被可互换地使用，所描述的技术既可用于以上提及的***和无线电技术，也可用于其他***和无线电技术。以下描述出于示例目的描述了新空口(New Radio，NR)***，并且在以下大部分描述中使用NR术语，但是这些技术也可应用于NR***应用以外的应用，如第6代(6th Generation，6G)通信***。It is worth noting that the technologies described in the embodiments of this application are not limited to Long Term Evolution (LTE)/LTE-Advanced (LTE-Advanced, LTE-A) systems, and can also be used in other wireless communication systems, such as code Division Multiple Access (Code Division Multiple Access, CDMA), Time Division Multiple Access (Time Division Multiple Access, TDMA), Frequency Division Multiple Access (Frequency Division Multiple Access, FDMA), Orthogonal Frequency Division Multiple Access (Orthogonal Frequency Division Multiple Access, OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and uses NR terminology in most of the description below, but these techniques can also be applied to applications other than NR system applications, such as 6th Generation (6th Generation) , 6G) communication system.

图1示出本申请实施例可应用的一种无线通信***的框图。无线通信***包括终端11和网络侧设备12。其中，终端11也可以称作终端设备或者用户终端(User Equipment，UE)，终端11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant，PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer，UMPC)、移动上网装置(Mobile Internet Device，MID)、可穿戴式设备(Wearable Device)或车载设备(VUE)、行人终端(PUE)等终端侧设备，可穿戴式设备包括：智能手表、手环、耳机、眼镜等。需要说明的是，在本申请实施例并不限定终端11的具体类型。网络侧设备12可以是基站或核心网，其中，基站可被称为节点B、演进节点B、接入点、基收发机站(Base Transceiver Station，BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set，BSS)、扩展服务集(Extended Service Set，ESS)、B节点、演进型B节点(eNB)、家用B节点、家用演进型B节点、WLAN接入点、WiFi节点、发送接收点(Transmitting Receiving Point，TRP)或所述领域中其他某个合适的术语，只要达到相同的技术效果，所述基站不限于特定技术词汇，需要说明的是，在本申请实施例中仅以NR***中的基站为例，但是并不限定基站的具体类型。FIG. 1 shows a block diagram of a wireless communication system to which the embodiments of the present application can be applied. The wireless communication system includes a terminal 11 and a network-side device 12 . The terminal 11 may also be called a terminal device or a user terminal (User Equipment, UE), and the terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital computer Assistant (Personal Digital Assistant, PDA), handheld computer, netbook, ultra-mobile personal computer (ultra-mobile personal computer, UMPC), mobile Internet device (Mobile Internet Device, MID), wearable device (Wearable Device) or vehicle-mounted device (VUE), pedestrian terminal (PUE) and other terminal-side devices, wearable devices include: smart watches, bracelets, headphones, glasses, etc. It should be noted that, the embodiment of the present application does not limit the specific type of the terminal 11 . The network side device 12 may be a base station or a core network, wherein the base station may be referred to as a Node B, an evolved Node B, an access point, a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a basic service Set (Basic Service Set, BSS), Extended Service Set (Extended Service Set, ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN Access Point, WiFi Node, Send Transmitting Receiving Point (TRP) or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms. The base station in the NR system is taken as an example, but the specific type of the base station is not limited.

首先，对本申请实施例中的相关术语进行解释说明；First, the relevant terms in the embodiments of the present application are explained;

一、中继服务码(Relay service code)1. Relay service code

中继服务代码用于识别中继UE所提供的连接服务，以及中继UE将向其提供服务的授权用户，并可以选择相关的安全策略或信息，例如：远程UE和中继UE之间的身份验证和授权所必需的。The relay service code is used to identify the connection service provided by the relay UE, and the authorized users to whom the relay UE will provide services, and can select relevant security policies or information, such as: the connection between the remote UE and the relay UE. Required for authentication and authorization.

对于层(Layer，L)3中继(relay)，每个中继服务码会关联一套PDU会话参数作为终端近距离服务策略(UE Proximity Services policy，UE prose policy)配置给中继终端和远端终端，其中，该PDU会话参数包括以下至少一项：PDU会话类型、数据网络名称(Data Network Name，DNN)、业务和会话连续性(Service and Session Continuity，SSC)模式、网络切片选择辅助信息(Network Slice Selection Assistance Information，NSSAI)、首选接入类型(Access Type Preference)。For layer (Layer, L) 3 relay (relay), each relay service code will be associated with a set of PDU session parameters as the terminal proximity service policy (UE Proximity Services policy, UE prose policy) configured to the relay terminal and the remote terminal. An end terminal, wherein the PDU session parameters include at least one of the following: PDU session type, data network name (Data Network Name, DNN), service and session continuity (Service and Session Continuity, SSC) mode, network slice selection auxiliary information (Network Slice Selection Assistance Information, NSSAI), preferred access type (Access Type Preference).

中继终端和远端终端在执行对应的发现过程时，会在发现消息中携带中继服务码，远端终端基于中继终端发出的中继服务码确定是否选择所述中继终端(mode A)。When the relay terminal and the remote terminal perform the corresponding discovery process, they will carry the relay service code in the discovery message, and the remote terminal determines whether to select the relay terminal (mode A) based on the relay service code sent by the relay terminal. ).

二、L3的建立过程Second, the establishment process of L3

如图2所示，在上述步骤110中，远端终端在与中继终端建立一对一的L2链路时或者之后为远端终端建立一条中继PDU会话用于中继/转发远端终端的业务数据。As shown in FIG. 2, in the above step 110, when the remote terminal establishes a one-to-one L2 link with the relay terminal or afterward, a relay PDU session is established for the remote terminal for relaying/forwarding the remote terminal business data.

三、PDU会话的建立原则3. Principles of establishing a PDU session

PDU会话的建立基于URSP确定，上述对于L3relay，中继PDU会话属于中继终端，所以中继终端建立中继PDU会话(session)也是基于自身的URSP，那么对此，远端终端和中继终端必须是要对中继PDU会话的建立有统一的理解，否则中继终端建立的PDU会话是不符合中继终端的业务需求的。当前的统一理解可以从配置的中继服务码和PDU会话参数关联关系来确定如何建立PDU会话，由于中继终端和中继终端对上述配置可能是一样的，因此中继PDU会话建立的参数是符合远端终端(remoteUE)的需求。The establishment of the PDU session is determined based on the URSP. For L3relay, the relay PDU session belongs to the relay terminal, so the relay terminal establishes the relay PDU session (session) based on its own URSP. Then, for this, the remote terminal and the relay terminal It is necessary to have a unified understanding of the establishment of the relay PDU session, otherwise the PDU session established by the relay terminal does not meet the service requirements of the relay terminal. The current unified understanding can determine how to establish a PDU session from the relationship between the configured relay service code and the PDU session parameters. Since the relay terminal and the relay terminal may have the same configuration above, the parameters for establishing the relay PDU session are Meet the needs of the remote terminal (remoteUE).

下面结合附图，通过一些实施例及其应用场景对本申请实施例提供的中继PDU会话建立的确定方法进行详细地说明。The method for determining the establishment of a relay PDU session provided by the embodiment of the present application will be described in detail below with reference to the accompanying drawings through some embodiments and application scenarios thereof.

如图3所示，本申请实施例提供了一种中继PDU会话建立的确定方法，该方法的步骤包括：As shown in FIG. 3 , an embodiment of the present application provides a method for determining the establishment of a relay PDU session. The steps of the method include:

步骤302，中继终端接收远端终端发送的第一信息，其中，第一信息用于确定用户终端路由选择策略URSP； Step 302, the relay terminal receives the first information sent by the remote terminal, wherein the first information is used to determine the routing selection policy URSP of the user terminal;

步骤304，中继终端根据第一信息确定URSP； Step 304, the relay terminal determines the URSP according to the first information;

步骤306，中继终端基于PDU会话参数确定与URSP匹配的路由描述符； Step 306, the relay terminal determines the route descriptor matching the URSP based on the PDU session parameters;

步骤308，中继终端确定是否存在与路由描述符匹配的中继PDU会话；其中，中继PDU会话为中继终端中继转发远端终端的业务数据的PDU会话。 Step 308, the relay terminal determines whether there is a relay PDU session matching the routing descriptor; wherein, the relay PDU session is a PDU session in which the relay terminal relays and forwards the service data of the remote terminal.

通过本申请实施例的上述步骤302至步骤308，中继终端可以根据接收到的第一信息确定对应的URSP，进而根据会话参数确定与该URSP匹配的路由描述符，进而根据该路由描述符确定是否存在匹配的中继PDU会话。可见，通过本申请实施例，中继终端可以确定URSP及其对应的路由描述符，即确定了后续中继PDU会话建立的依据，从而解决了现有技术中中继终端无法确定路由描述符或者URSP，导致后续无法建立中继PDU会话的问题。Through the foregoing steps 302 to 308 in this embodiment of the present application, the relay terminal can determine the corresponding URSP according to the received first information, and then determine the routing descriptor matching the URSP according to the session parameters, and then determine the routing descriptor according to the routing descriptor. Whether there is a matching relay PDU session. It can be seen that through the embodiments of the present application, the relay terminal can determine the URSP and its corresponding routing descriptor, that is, the basis for establishing the subsequent relay PDU session, thus solving the problem that the relay terminal cannot determine the routing descriptor or the routing descriptor in the prior art. URSP, resulting in the subsequent failure to establish a relay PDU session.

在本申请实施例的可选实施方式中，本申请实施例的方法还包括以下之一：In an optional implementation manner of the embodiment of the present application, the method of the embodiment of the present application further includes one of the following:

步骤310，在存在与路由描述符匹配的第一PDU会话，且第一PDU会话不用于中继转发远端终端的业务数据的情况下，中继终端建立中继PDU会话；Step 310, when there is a first PDU session that matches the routing descriptor, and the first PDU session is not used to relay and forward the service data of the remote terminal, the relay terminal establishes a relay PDU session;

步骤312，在存在与路由描述符匹配的第二PDU会话，且第二PDU会话用于中继转发远端终端的业务数据的情况下，中继终端重用第二PDU会话为中继PDU会话；Step 312, when there is a second PDU session matching the routing descriptor, and the second PDU session is used to relay and forward the service data of the remote terminal, the relay terminal reuses the second PDU session as a relay PDU session;

步骤314，在不存在与路由描述符匹配的PDU会话的情况下，中继终端建立中继PDU会话。Step 314 , if there is no PDU session matching the routing descriptor, the relay terminal establishes a relay PDU session.

通过上述步骤310至步骤314可知，在不存在与路由描述符匹配的PDU会话的情况下，中继终端会建立中继PDU会话，如果存在与路由描述符匹配的PDU会话，且该PDU会话不用于中继转发远端终端的业务数据，则也需要建立中继PDU会话，如果该PDU会话用于中继转发远端终端的业务数据则无需建立新的中继PDU会话，则复用该PDU会话为中继PDU会话。可见，无论是哪种情况，中继终端都能够建立该中继PDU会话，或将能够用于中继转发远端业务数据的PDU会话复用为中继PDU会话，以确定符合远端终端需求的中继PDU会话。Through the above steps 310 to 314, it can be known that in the case where there is no PDU session matching the routing descriptor, the relay terminal will establish a relay PDU session. If there is a PDU session matching the routing descriptor, and the PDU session is not used For relaying and forwarding the service data of the remote terminal, a relay PDU session also needs to be established. If the PDU session is used to relay and forward the service data of the remote terminal, there is no need to establish a new relay PDU session, and the PDU is reused. The session is a relay PDU session. It can be seen that in either case, the relay terminal can establish the relay PDU session, or multiplex the PDU session that can be used for relaying and forwarding remote service data into a relay PDU session, so as to determine whether it meets the requirements of the remote terminal. the relay PDU session.

需要说明的是，本申请实施例中的中继终端为远端终端在发现阶段基于中继服务码选择的中继终端，该中继服务码是在发现阶段，远端终端选择的符合业务需求的中继服务码。It should be noted that the relay terminal in the embodiment of the present application is a relay terminal selected by the remote terminal based on the relay service code in the discovery phase, and the relay service code is selected by the remote terminal in the discovery phase and meets the service requirements. the relay service code.

在本申请实施例的可选实施方式中，本申请实施例中的第一信息包括以下至少一项：In an optional implementation manner of the embodiment of the present application, the first information in the embodiment of the present application includes at least one of the following:

1)业务描述符(Traffic descriptor)；2)应用描述符(Application descriptors)；3)网际互联协议(Internet Protocol，IP)描述符(IP descriptors)；4)非IP描述符(Non-IP descriptors)；5)域描述符(Domain descriptors)；6)数据网络名称DNN；7)连接能力(Connection Capabilities)；8)目标地址信息。1) Traffic descriptor; 2) Application descriptor; 3) Internet Protocol (IP) descriptor (IP descriptor); 4) Non-IP descriptor (Non-IP descriptor) ; 5) Domain descriptors; 6) Data network name DNN; 7) Connection Capabilities; 8) Target address information.

需要说明的是，业务描述符在其他应用场景也可以称之为流量描述符。此外，该目标地址信息，可以是指目标IP、目标媒体接入控制(Media Access Control，MAC)等。It should be noted that the service descriptor can also be called a traffic descriptor in other application scenarios. In addition, the target address information may refer to a target IP, a target media access control (Media Access Control, MAC), and the like.

在本申请实施例的可选实施方式中，对于本申请步骤304中涉及到的中继终端根据第一信息确定URSP的方式，进一步可以包括：In an optional implementation manner of the embodiment of the present application, the manner in which the relay terminal determines the URSP according to the first information involved in step 304 of the present application may further include:

步骤304-11，中继终端从配置的URSP规则中的业务描述符中选择与第一信息中的业务描述符匹配的第一业务描述符；Step 304-11, the relay terminal selects the first service descriptor matching the service descriptor in the first information from the service descriptors in the configured URSP rule;

步骤304-12，中继终端选择第一业务描述符匹配的URSP。Step 304-12, the relay terminal selects the URSP that matches the first service descriptor.

通过上述步骤304-11和步骤304-12，需要将第一信息中的业务描述符与配置的URSP规则中的业务描述符匹配，以进一步根据匹配的业务描述符选择对应的URSP，也就是说，能够准确的确定所需要的URSP。Through the above steps 304-11 and 304-12, it is necessary to match the service descriptor in the first information with the service descriptor in the configured URSP rule, so as to further select the corresponding URSP according to the matched service descriptor, that is to say , can accurately determine the required URSP.

在本申请实施例的可选实施方式中，在中继终端基于PDU会话参数确定与URSP匹配的路由描述符之前，本申请实施例的方法步骤还包括以下之一：In an optional implementation of the embodiment of the present application, before the relay terminal determines the route descriptor matching the URSP based on the PDU session parameter, the method steps of the embodiment of the present application further include one of the following:

步骤300，中继终端从本地获取中继服务码；Step 300, the relay terminal obtains the relay service code locally;

步骤301，中继终端接收远端终端发送的第二信息，其中，远端终端中携带有中继服务码；Step 301, the relay terminal receives the second information sent by the remote terminal, wherein the remote terminal carries the relay service code;

其中，中继服务码与PDU会话参数具有关联关系。The relay service code and the PDU session parameter have an associated relationship.

基于上述步骤300和步骤301，中继终端通过以下至少之一的方式确定PDU会话参数：Based on the above steps 300 and 301, the relay terminal determines the PDU session parameters in at least one of the following ways:

方式1，中继终端从本地获取中继服务码，并根据关联关系确定与中继服务码关联的PDU会话参数；Mode 1, the relay terminal obtains the relay service code locally, and determines the PDU session parameter associated with the relay service code according to the association relationship;

方式2，中继终端从第二信息获取中继服务码，并根据关联关系确定与中继服务码关联的PDU会话参数。Mode 2, the relay terminal acquires the relay service code from the second information, and determines the PDU session parameter associated with the relay service code according to the association relationship.

可见，在本申请实施例中可以从本地获取中继服务码，也可以是从远端终端发送的第二信息中获取中继服务码，进而根据中继服务码与关联关系确定对应的PDU会话参数。也就是说，在本申请实施例中也可以根据需要确定对应的PDU会话参数，以便后续中继PDU会话的建立。It can be seen that in the embodiment of the present application, the relay service code can be obtained locally, or the relay service code can be obtained from the second information sent by the remote terminal, and then the corresponding PDU session can be determined according to the relay service code and the association relationship. parameter. That is to say, in this embodiment of the present application, the corresponding PDU session parameters may also be determined as required, so as to establish a subsequent relay PDU session.

在本申请实施例的可选实施方式中，本申请实施例中的PDU会话参数包括以下至少一项：业务和会话连续性模式(Service and Session Continuity，SSC)、PDU会话类型、DNN、网络切片选择辅助信息NSSAI、首选接入类型。In an optional implementation of the embodiment of the present application, the PDU session parameters in the embodiment of the present application include at least one of the following: service and session continuity mode (Service and Session Continuity, SSC), PDU session type, DNN, network slice Select auxiliary information NSSAI, preferred access type.

图3是从中继终端侧对本申请实施例进行解释说明，下面将从远端终端侧对本申请进行解释说明。FIG. 3 illustrates the embodiment of the present application from the relay terminal side, and the present application will be explained from the remote terminal side below.

如图4所示，本申请实施例还提供了一种PDU会话建立的确定方法，该方法的步骤包括：As shown in FIG. 4 , an embodiment of the present application further provides a method for determining the establishment of a PDU session. The steps of the method include:

步骤402，远端终端向中继终端发送第一信息，其中，第一信息用于确定用户终端路由选择策略URSP。 Step 402, the remote terminal sends first information to the relay terminal, where the first information is used to determine the routing selection policy URSP of the user terminal.

通过本申请实施例的步骤402，远端终端可以向中继终端发送用于确定URSP的第一信息，进而中继终端可以根据该第一信息作为确定URSP，以及后续中继PDU会话建立的依据，从而解决了现有技术中中继终端无法确定路由描述符或者URSP，导致后续无法建立中继PDU会话的问题。Through step 402 in this embodiment of the present application, the remote terminal may send the first information for determining the URSP to the relay terminal, and then the relay terminal may use the first information as a basis for determining the URSP and establishing a subsequent relay PDU session , thereby solving the problem that the relay terminal cannot determine the route descriptor or the URSP in the prior art, resulting in the subsequent failure to establish a relay PDU session.

在本申请实施例的可选实施方式中，本申请实施例的方法还可以包括：In an optional implementation manner of the embodiment of the present application, the method of the embodiment of the present application may further include:

步骤404，远端终端向中继终端发送第二信息，其中，远端终端中携带有中继服务码，其中，中继服务码与PDU会话参数具有关联关系。Step 404, the remote terminal sends second information to the relay terminal, wherein the remote terminal carries the relay service code, wherein the relay service code and the PDU session parameter have an associated relationship.

1)业务描述符；2)应用描述符；3)IP描述符；4)非IP描述符；5)域描述符；6)数据网络名称DNN；7)连接能力；8)目标地址信息。1) Service Descriptor; 2) Application Descriptor; 3) IP Descriptor; 4) Non-IP Descriptor; 5) Domain Descriptor; 6) Data Network Name DNN; 7) Connectivity; 8) Target Address Information.

在本申请实施例的可选实施方式中，本申请实施例中的第一信息和第二信息通过以下至少一项的消息传输：In an optional implementation manner of the embodiment of the present application, the first information and the second information in the embodiment of the present application are transmitted through a message of at least one of the following:

1)直接建立请求消息；2)直接链路鉴权回复消息；3)直接链路安全命令完成消息；4)直接链路更改请求消息；5)直接链路更改回复消息。1) Direct link establishment request message; 2) Direct link authentication reply message; 3) Direct link security command completion message; 4) Direct link change request message; 5) Direct link change reply message.

在本申请实施例的可选实施方式中，本申请实施例步骤402中涉及到的远端终端向中继终端发送第一信息的方式，进一步可以包括：在远端终端和中继终端安全连接建立后，远端终端向中继终端发送第一信息。In an optional implementation manner of this embodiment of the present application, the manner in which the remote terminal sends the first information to the relay terminal involved in step 402 in this embodiment of the present application may further include: a secure connection between the remote terminal and the relay terminal After the establishment, the remote terminal sends the first information to the relay terminal.

在本申请实施例的可选实施方式中，本申请实施例步骤404中涉及到的远端终端向所述中继终端发送第二信息的方式，进一步可以包括：在远端终端和中继终端安全连接建立后，远端终端向中继终端发送第二信息；In an optional implementation manner of this embodiment of the present application, the manner in which the remote terminal sends the second information to the relay terminal involved in step 404 in this embodiment of the present application may further include: between the remote terminal and the relay terminal After the secure connection is established, the remote terminal sends the second information to the relay terminal;

其中，在第二信息包括以下至少一项：业务和会话连续性模式、PDU会话类型、DNN、NSSAI。Wherein, the second information includes at least one of the following: service and session continuity mode, PDU session type, DNN, and NSSAI.

下面结合本申请实施例的具体实施方式，对本申请进行举例说明。The present application will be illustrated below with reference to the specific implementation manners of the embodiments of the present application.

该具体实施方式提供了一种中继PDU会话的确定方法，如图5所示，该方法的步骤包括：This specific embodiment provides a method for determining a relay PDU session. As shown in FIG. 5 , the steps of the method include:

步骤501，Remote UE在发现阶段基于匹配的relay service code发现并选择一个relay UE；Step 501, the Remote UE discovers and selects a relay UE based on the matched relay service code in the discovery phase;

步骤502，Remote UE发送第一信息和/或第二信息给relay UE；Step 502, the Remote UE sends the first information and/or the second information to the relay UE;

其中，第一信息包括以下至少一项：Wherein, the first information includes at least one of the following:

1)业务描述符(remote UE发送给relay UE)或流量描述符，其中，业务描述符为remote UE需要中继转发业务匹配的业务描述符；1) Service descriptor (remote UE sends to relay UE) or traffic descriptor, wherein the service descriptor is the service descriptor that the remote UE needs to relay and forward service matching;

2)应用描述符，其中，应用描述符为remote UE需要中继转发业务匹配的应用描述符。2) Application descriptor, wherein the application descriptor is the application descriptor that the remote UE needs to match with the relay forwarding service.

3)IP描述符，其中，IP描述符为remote UE需要中继转发业务匹配的IP描述符；3) IP descriptor, wherein, the IP descriptor is the IP descriptor that the remote UE needs to match with the relay forwarding service;

4)非IP描述符，其中，非IP描述符为remote UE需要中继转发业务匹配的非IP描述符；4) a non-IP descriptor, wherein the non-IP descriptor is a non-IP descriptor that the remote UE needs to match with the relay forwarding service;

5)域描述符，其中，域描述符为remote UE需要中继转发业务匹配的域描述符；5) a domain descriptor, where the domain descriptor is a domain descriptor that the remote UE needs to match with the relay forwarding service;

6)DNN，其中，DNN符为remote UE需要中继转发业务匹配的DNN；6) DNN, wherein, the DNN symbol is the DNN that the remote UE needs to relay and forward service matching;

7)连接能力，连接能力为remote UE需要中继转发业务匹配的连接能力。7) Connection capability, the connection capability is the connection capability that the remote UE needs to match with the relay and forwarding service.

此外，该具体实施方式中的第二信息包括以下至少一项：In addition, the second information in this specific embodiment includes at least one of the following:

1)Relay service code，relay service code对应remote UE需要relay UE转发的连接性业务和关联的PDU会话参数，关联的PDU会话参数包含以下至少一项：PDU会话类型，DNN，业务和会话连续性模式，NSSAI，首选接入类型(Access Type Preference)。1) Relay service code, the relay service code corresponds to the connectivity service and associated PDU session parameters that the remote UE needs to forward by the relay UE. The associated PDU session parameters include at least one of the following: PDU session type, DNN, service and session continuity mode , NSSAI, Access Type Preference.

2)PDU Session type，PDU session type为remote UE需要relay UE所建立的第一PDU session的会话类型；2) PDU Session type, the PDU session type is the session type of the first PDU session established by the remote UE that needs to be relayed by the UE;

3)DNN，其中，DNN为remote UE需要relay UE所建立的第一PDU session的DNN；3) DNN, wherein the DNN is the DNN that the remote UE needs to relay the first PDU session established by the UE;

4)业务和会话连续性模式(SSC Mode)，其中，SSC mode为remote UE需要relay UE所建立的第一PDU session的SSC mode；4) Service and session continuity mode (SSC Mode), wherein SSC mode is the SSC mode of the first PDU session established by the remote UE that needs to be relayed by the UE;

5)Access Type Preference，其中，Access Type Preference为remote UE需要relay UE所建立的第一Access Type Preference。5) Access Type Preference, wherein the Access Type Preference is the first Access Type Preference established by the remote UE that needs to be relayed by the UE.

需要说明的是，本申请实施例中的第一信息与第二信息在与relay UE安全建立之后发送。It should be noted that, the first information and the second information in the embodiment of the present application are sent after the safety establishment with the relay UE.

此外，在第二信息包括relay service code情况下，可以在与relay UE安全建立之前发送In addition, in the case where the second information includes the relay service code, it can be sent before the security establishment with the relay UE

可选地，第一信息和第二信息包括在以下至少一个消息中：Optionally, the first information and the second information are included in at least one of the following messages:

A)直接建立请求消息；A) Directly create a request message;

B)直接链路鉴权回复消息；B) direct link authentication reply message;

C)直接链路安全命令完成消息；C) Direct Link Security Command Complete message;

D)直接链路更改请求/回复消息。D) Direct link change request/reply messages.

步骤503，Relay UE接收第一信息和/或第二信息，基于第一信息和/或第二信息执行第一操作。Step 503, the Relay UE receives the first information and/or the second information, and performs a first operation based on the first information and/or the second information.

其中，第一操作包括以下至少一项：The first operation includes at least one of the following:

1)基于第一信息匹配符合第一信息的URSP。1) Based on the first information, match URSPs that conform to the first information.

2)基于relay service code关联的PDU session参数选择匹配的URSP中的路由描述符。2) Select the route descriptor in the matching URSP based on the PDU session parameter associated with the relay service code.

其中，如果relay UE获取到第二信息，则第二信息选择匹配的URSP中的路由描述符。Wherein, if the relay UE obtains the second information, the second information selects the route descriptor in the matching URSP.

3)基于所诉匹配的路由描述符判断当前是否有匹配的PDU会话。3) Judge whether there is currently a matching PDU session based on the matching route descriptor.

需要说明的是，如果有匹配的PDU session，但是不适用于中继转发remote UE的业务数据，则执行第一PDU会话建立，第一PDU会话用于中继转发remote UE业务数据。如果有匹配的PDU会话，也用于中继转发remote UE的业务数据，则重用匹配的PDU会话。如果没有匹配的PDU会话，则执行第一PDU会话建立，第一PDU会话用于中继转发remote UE业务数据。It should be noted that if there is a matching PDU session, but it is not suitable for relaying and forwarding the service data of the remote UE, the establishment of the first PDU session is performed, and the first PDU session is used to relay and forward the service data of the remote UE. If there is a matching PDU session, which is also used to relay and forward the service data of the remote UE, the matching PDU session is reused. If there is no matching PDU session, the establishment of the first PDU session is performed, and the first PDU session is used to relay and forward remote UE service data.

需要说明的是，本申请实施例提供的中继PDU会话建立的确定方法，执行主体可以为中继PDU会话建立的确定装置，或者，该中继PDU会话建立的确定装置中的用于执行中继PDU会话建立的确定方法的控制模块。本申请实施例中以中继PDU会话建立的确定装置执行中继PDU会话建立的确定方法为例，说明本申请实施例提供的中继PDU会话建立的确定装置。It should be noted that, in the method for determining the establishment of the relay PDU session provided by the embodiment of the present application, the execution subject may be the device for determining the establishment of the relay PDU session, or the device for determining the establishment of the relay PDU session is used in the execution process. A control module following the determination method of PDU session establishment. In the embodiment of the present application, the device for determining the establishment of the relay PDU session provided by the embodiment of the present application is described by taking the method for determining the establishment of the relay PDU session performed by the device for determining the establishment of the relay PDU session as an example.

如图6所示，本申请实施例提供了一种中继PDU会话建立的确定装置，应用中继终端，该装置包括：As shown in FIG. 6 , an embodiment of the present application provides a device for determining the establishment of a relay PDU session, which is applied to a relay terminal, and the device includes:

第一接收模块62，用于接收远端终端发送的第一信息，其中，第一信息用于确定用户终端路由选择策略URSP；The first receiving module 62 is configured to receive the first information sent by the remote terminal, wherein the first information is used to determine the routing selection policy URSP of the user terminal;

第一确定模块64，用于根据第一信息确定URSP；a first determining module 64, configured to determine the URSP according to the first information;

第二确定模块66，用于基于PDU会话参数确定与URSP匹配的路由描述符；a second determining module 66, configured to determine a route descriptor matching the URSP based on the PDU session parameters;

第三确定模块68，用于确定是否存在与路由描述符匹配的中继PDU会话；其中，中继PDU会话为中继终端中继转发远端终端的业务数据的PDU会话。The third determining module 68 is configured to determine whether there is a relay PDU session matching the routing descriptor; wherein, the relay PDU session is a PDU session in which the relay terminal relays and forwards the service data of the remote terminal.

通过本申请实施例的装置，可以根据接收到的第一信息确定对应的URSP，进而根据会话参数确定与该URSP匹配的路由描述符，进而根据该路由描述符确定是否存在匹配的中继PDU会话。可见，通过本申请实施例的装置，可以确定URSP及其对应的路由描述符，即确定了后续中继PDU会话建立的依据，从而解决了现有技术中中继终端无法确定路由描述符或者URSP，导致后续无法建立中继PDU会话的问题。With the device in this embodiment of the present application, the corresponding URSP can be determined according to the received first information, the routing descriptor matching the URSP can be determined according to the session parameters, and whether there is a matching relay PDU session can be determined according to the routing descriptor. . It can be seen that through the device of the embodiment of the present application, the URSP and its corresponding routing descriptor can be determined, that is, the basis for establishing the subsequent relay PDU session is determined, thereby solving the problem that the relay terminal cannot determine the routing descriptor or the URSP in the prior art. , resulting in the subsequent failure to establish a relay PDU session.

可选地，本申请实施例的装置还可以包括以下之一：Optionally, the apparatus in this embodiment of the present application may further include one of the following:

第一建立模块，用于在存在与路由描述符匹配的第一PDU会话，且第一PDU会话不用于中继转发远端终端的业务数据的情况下，建立中继PDU会话；a first establishment module, configured to establish a relay PDU session when there is a first PDU session matching the routing descriptor and the first PDU session is not used for relaying and forwarding service data of the remote terminal;

重用模块，用于在存在与路由描述符匹配的第二PDU会话，且第二PDU会话用于中继转发远端终端的业务数据的情况下，重用第二PDU会话为中继PDU会话；A reuse module, configured to reuse the second PDU session as a relay PDU session when there is a second PDU session matching the routing descriptor and the second PDU session is used to relay and forward the service data of the remote terminal;

第二建立模块，用于在不存在与路由描述符匹配的PDU会话的情况下，建立中继PDU会话。The second establishing module is configured to establish a relay PDU session in the case that there is no PDU session matching with the routing descriptor.

可选地，本申请实施例中的第一信息包括以下至少一项：业务描述符；应用描述符；网际互联协议IP描述符；非IP描述符；域描述符；数据网络名称DNN；连接能力；目标地址信息。Optionally, the first information in this embodiment of the present application includes at least one of the following: service descriptor; application descriptor; Internet Protocol IP descriptor; non-IP descriptor; domain descriptor; data network name DNN; connection capability ;Destination address information.

可选地，本申请实施例中的第一确定模块64进一步可以包括：第一选择单元，用于从配置的URSP规则中的业务描述符中选择与第一信息中的业务描述符匹配的第一业务描述符；第一选择单元，用于选择第一业务描述符匹配的URSP。Optionally, the first determination module 64 in this embodiment of the present application may further include: a first selection unit, configured to select the first selection unit that matches the service descriptor in the first information from the service descriptors in the configured URSP rules. a service descriptor; and a first selection unit, configured to select a URSP that matches the first service descriptor.

可选地，本申请实施例中的装置还包括以下之一：Optionally, the device in the embodiment of the present application further includes one of the following:

第一获取模块，用于在基于PDU会话参数确定与URSP匹配的路由描述符之前，从本地获取中继服务码；The first obtaining module is used to obtain the relay service code locally before determining the route descriptor matching the URSP based on the PDU session parameters;

第二接收模块，用于接收远端终端发送的第二信息，其中，远端终端中携带有中继服务码；a second receiving module, configured to receive the second information sent by the remote terminal, wherein the remote terminal carries a relay service code;

可选地，本申请实施例中的装置还包括：Optionally, the device in the embodiment of the present application further includes:

第二获取模块，用于通过以下至少之一的方式确定PDU会话参数：The second obtaining module is configured to determine the PDU session parameters in at least one of the following ways:

方式1)从本地获取中继服务码，并根据关联关系确定与中继服务码关联的PDU会话参数；Mode 1) obtains the relay service code locally, and determines the PDU session parameters associated with the relay service code according to the association relationship;

方式2)从第二信息获取中继服务码，并根据关联关系确定与中继服务码关联的PDU会话参数。Manner 2) Acquire the relay service code from the second information, and determine the PDU session parameter associated with the relay service code according to the association relationship.

可选地，本申请实施例中的PDU会话参数包括以下至少一项：业务和会话连续性模式、PDU会话类型、DNN、网络切片选择辅助信息NSSAI、首选接入类型。Optionally, the PDU session parameters in this embodiment of the present application include at least one of the following: service and session continuity mode, PDU session type, DNN, network slice selection assistance information NSSAI, and preferred access type.

如图7所示，本申请实施例还提供了一种中继PDU会话建立的确定装置，应用于远端终端，该装置包括：As shown in FIG. 7 , an embodiment of the present application further provides a device for determining the establishment of a relay PDU session, which is applied to a remote terminal, and the device includes:

第一发送模块72，用于向中继终端发送第一信息，其中，第一信息用于确定用户终端路由选择策略URSP。The first sending module 72 is configured to send first information to the relay terminal, where the first information is used to determine the user terminal routing policy URSP.

通过本申请实施例中的装置，可以向中继终端发送用于确定URSP的第一信息，进而中继终端可以根据该第一信息作为确定URSP，以及后续中继PDU会话建立的依据，从而解决了现有技术中中继终端无法确定路由描述符或者URSP，导致后续无法建立中继PDU会话的问题。With the device in the embodiment of the present application, the first information for determining the URSP can be sent to the relay terminal, and the relay terminal can use the first information as the basis for determining the URSP and establishing the subsequent relay PDU session, thereby solving the problem of solving the problem. This solves the problem that the relay terminal cannot determine the route descriptor or the URSP in the prior art, resulting in failure to establish a relay PDU session subsequently.

可选地，本申请实施例中的装置还可以包括：第二发送模块，用于向中继终端发送第二信息，其中，远端终端中携带有中继服务码，其中，中继服务码与PDU会话参数具有关联关系。Optionally, the apparatus in this embodiment of the present application may further include: a second sending module, configured to send second information to the relay terminal, wherein the remote terminal carries a relay service code, wherein the relay service code Associated with PDU session parameters.

可选地，本申请实施例中的第一信息和第二信息通过以下至少一项的消息传输：直接建立请求消息；直接链路鉴权回复消息；直接链路安全命令完成消息；直接链路更改请求消息；直接链路更改回复消息。Optionally, the first information and the second information in this embodiment of the present application are transmitted through at least one of the following messages: a direct establishment request message; a direct link authentication reply message; a direct link security command completion message; a direct link Change Request message; Direct Link Change Reply message.

可选地，本申请实施例中的第一发送模块，还用于在远端终端和中继终端安全连接建立后，向中继终端发送第一信息。Optionally, the first sending module in the embodiment of the present application is further configured to send the first information to the relay terminal after the secure connection between the remote terminal and the relay terminal is established.

可选地，本申请实施例中的第二发送模块，还用于在远端终端和中继终端安全连接建立后，向中继终端发送第二信息；其中，在第二信息包括以下至少一项：业务和会话连续性模式、PDU会话类型、DNN、NSSAI。Optionally, the second sending module in the embodiment of the present application is further configured to send second information to the relay terminal after the secure connection between the remote terminal and the relay terminal is established; wherein the second information includes at least one of the following: Items: Service and Session Continuity Mode, PDU Session Type, DNN, NSSAI.

本申请实施例中的中继PDU会话建立的确定装置可以是装置，具有操作***的装置或电子设备，也可以是终端中的部件、集成电路、或芯片。该装置或电子设备可以是移动终端，也可以为非移动终端。示例性的，移动终端可以包括但不限于上述所列举的终端11的类型，非移动终端可以为服务器、网络附属存储器(Network Attached Storage，NAS)、个人计算机(personal computer，PC)、电视机(television，TV)、柜员机或者自助机等，本申请实施例不作具体限定。The apparatus for determining the establishment of a relay PDU session in this embodiment of the present application may be an apparatus, an apparatus having an operating system or an electronic device, or a component, an integrated circuit, or a chip in a terminal. The apparatus or electronic device may be a mobile terminal or a non-mobile terminal. Exemplarily, the mobile terminal may include, but is not limited to, the types of terminals 11 listed above, and the non-mobile terminal may be a server, a network attached storage (NAS), a personal computer (personal computer, PC), a television ( television, TV), teller machine, or self-service machine, etc., which are not specifically limited in the embodiments of the present application.

本申请实施例图6提供的中继PDU会话建立的确定装置能够实现图3的方法实施例实现的各个过程，并达到相同的技术效果，本申请实施例图7提供的中继PDU会话建立的确定装置能够实现图4的方法实施例实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。The apparatus for determining the establishment of a relay PDU session provided in FIG. 6 in the embodiment of the present application can implement various processes implemented by the method embodiment in FIG. 3 and achieve the same technical effect. The determination device can implement each process implemented by the method embodiment of FIG. 4 and achieve the same technical effect, and to avoid repetition, details are not described here.

可选的，如图8所示，本申请实施例还提供一种通信设备800，包括处理器801，存储器802，存储在存储器802上并可在所述处理器801上运行的程序或指令，例如，该通信设备800为终端时，该程序或指令被处理器801执行时实现上述中继PDU会话建立的确定方法实施例的各个过程，且能达到相同的技术效果。该通信设备800为网络侧设备时，该程序或指令被处理器801执行时实现上述中继PDU会话建立的确定方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。Optionally, as shown in FIG. 8 , an embodiment of the present application further provides a communication device 800, including a processor 801, a memory 802, a program or instruction stored in the memory 802 and executable on the processor 801, For example, when the communication device 800 is a terminal, when the program or instruction is executed by the processor 801, each process of the above-mentioned embodiment of the method for determining the establishment of a relay PDU session can be achieved, and the same technical effect can be achieved. When the communication device 800 is a network-side device, when the program or instruction is executed by the processor 801, each process of the above-mentioned embodiment of the method for determining the establishment of a relay PDU session can be achieved, and the same technical effect can be achieved. Repeat.

本申请实施例还提供一种终端，包括处理器和通信接口，通信接口用于接收远端终端发送的第一信息，其中，所述第一信息用于确定用户终端路由选择策略URSP；处理器用于根据所述第一信息确定所述URSP，并基于PDU会话参数确定与所述URSP匹配的路由描述符，以及确定是否存在与所述路由描述符匹配的中继PDU会话；其中，所述中继PDU会话为所述中继终端中继转发所述远端终端的业务数据的PDU会话。该终端实施例是与上述终端侧方法实施例对应的，上述方法实施例的各个实施过程和实现方式均可适用于该终端实施例中，且能达到相同的技术效果。具体地，图9为实现本申请实施例的一种终端的硬件结构示意图。An embodiment of the present application further provides a terminal, including a processor and a communication interface, where the communication interface is configured to receive first information sent by a remote terminal, where the first information is used to determine a user terminal routing policy URSP; the processor uses determining the URSP according to the first information, determining a routing descriptor matching the URSP based on the PDU session parameters, and determining whether there is a relay PDU session matching the routing descriptor; wherein, the middle The relay PDU session is the PDU session in which the relay terminal relays and forwards the service data of the remote terminal. This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment, and each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect. Specifically, FIG. 9 is a schematic diagram of a hardware structure of a terminal implementing an embodiment of the present application.

该终端100包括但不限于：射频单元101、网络模块102、音频输出单元103、输入单元104、传感器105、显示单元106、用户输入单元107、接口单元108、存储器109、以及处理器110等中的至少部分部件。The terminal 100 includes but is not limited to: a radio frequency unit 101, a network module 102, an audio output unit 103, an input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, and a processor 110, etc. at least part of the components.

本领域技术人员可以理解，终端100还可以包括给各个部件供电的电源(比如电池)，电源可以通过电源管理***与处理器110逻辑相连，从而通过电源管理***实现管理充电、放电、以及功耗管理等功能。图9中示出的终端结构并不构成对终端的限定，终端可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置，在此不再赘述。Those skilled in the art can understand that the terminal 100 may also include a power source (such as a battery) for supplying power to various components, and the power source may be logically connected to the processor 110 through a power management system, so as to manage charging, discharging, and power consumption through the power management system management and other functions. The terminal structure shown in FIG. 9 does not constitute a limitation on the terminal, and the terminal may include more or less components than shown, or combine some components, or arrange different components, which will not be repeated here.

应理解的是，本申请实施例中，输入单元104可以包括图形处理器(Graphics Processing Unit，GPU)1041和麦克风1042，图形处理器1041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元106可包括显示面板1061，可以采用液晶显示器、有机发光二极管等形式来配置显示面板1061。用户输入单元107包括触控面板1071以及其他输入设备1072。触控面板1071，也称为触摸屏。触控面板1071可包括触摸检测装置和触摸控制器两个部分。其他输入设备1072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。It should be understood that, in this embodiment of the present application, the input unit 104 may include a graphics processor (Graphics Processing Unit, GPU) 1041 and a microphone 1042. Such as camera) to obtain still pictures or video image data for processing. The display unit 106 may include a display panel 1061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 107 includes a touch panel 1071 and other input devices 1072 . The touch panel 1071 is also called a touch screen. The touch panel 1071 may include two parts, a touch detection device and a touch controller. Other input devices 1072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which are not described herein again.

本申请实施例中，射频单元101将来自网络侧设备的下行数据接收后，给处理器110处理；另外，将上行的数据发送给网络侧设备。通常，射频单元101包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器、双工器等。In the embodiment of the present application, the radio frequency unit 101 receives the downlink data from the network side device, and then processes it to the processor 110; in addition, sends the uplink data to the network side device. Generally, the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

存储器109可用于存储软件程序或指令以及各种数据。存储器109可主要包括存储程序或指令区和存储数据区，其中，存储程序或指令区可存储操作***、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外，存储器109可以包括高速随机存取存储器，还可以包括非易失性存储器，其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。 Memory 109 may be used to store software programs or instructions as well as various data. The memory 109 may mainly include a storage program or instruction area and a storage data area, wherein the stored program or instruction area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.) and the like. In addition, the memory 109 may include a high-speed random access memory, and may also include a non-volatile memory, wherein the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM) , PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. For example at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.

处理器110可包括一个或多个处理单元；可选的，处理器110可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作***、用户界面和应用程序或指令等，调制解调处理器主要处理无线通信，如基带处理器。可以理解的是，上述调制解调处理器也可以不集成到处理器110中。The processor 110 may include one or more processing units; optionally, the processor 110 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, application programs or instructions, etc., Modem processors mainly deal with wireless communications, such as baseband processors. It can be understood that, the above-mentioned modulation and demodulation processor may not be integrated into the processor 110 .

其中，如果上述终端为中继终端，则射频单元101，用于接收远端终端发送的第一信息，其中，第一信息用于确定用户终端路由选择策略URSPWherein, if the above-mentioned terminal is a relay terminal, the radio frequency unit 101 is configured to receive the first information sent by the remote terminal, wherein the first information is used to determine the routing selection policy URSP of the user terminal

处理器110，用于根据第一信息确定URSP，并基于PDU会话参数确定与URSP匹配的路由描述符，以及确定是否存在与路由描述符匹配的中继PDU会话；其中，中继PDU会话为中继终端中继转发远端终端的业务数据的PDU会话。The processor 110 is configured to determine the URSP according to the first information, and determine the routing descriptor matching the URSP based on the PDU session parameters, and determine whether there is a relay PDU session matching the routing descriptor; wherein, the relay PDU session is in the middle The relay terminal relays and forwards the PDU session of the service data of the remote terminal.

可选的，处理器110，还用于执行以下至少之一的操作：Optionally, the processor 110 is further configured to perform at least one of the following operations:

在存在与路由描述符匹配的第一PDU会话，且第一PDU会话不用于中继转发远端终端的业务数据的情况下，建立中继PDU会话；In the case that there is a first PDU session that matches the routing descriptor, and the first PDU session is not used to relay and forward the service data of the remote terminal, establish a relay PDU session;

在存在与路由描述符匹配的第二PDU会话，且第二PDU会话用于中继转发远端终端的业务数据的情况下，重用第二PDU会话为中继PDU会话；In the case that there is a second PDU session that matches the routing descriptor, and the second PDU session is used to relay and forward the service data of the remote terminal, reuse the second PDU session as a relay PDU session;

在不存在与路由描述符匹配的PDU会话的情况下，建立中继PDU会话。In the absence of a PDU session matching the route descriptor, a relay PDU session is established.

可选的，处理器110，还用于从配置的URSP规则中的业务描述符中选择与第一信息中的业务描述符匹配的第一业务描述符，以及选择第一业务描述符匹配的URSP。Optionally, the processor 110 is further configured to select, from the service descriptors in the configured URSP rules, a first service descriptor that matches the service descriptor in the first information, and select a URSP that matches the first service descriptor .

可选的，处理器110，还用于在中继终端基于PDU会话参数确定与URSP匹配的路由描述符之前，执行以下之一的操作：Optionally, the processor 110 is further configured to perform one of the following operations before the relay terminal determines the route descriptor matching the URSP based on the PDU session parameters:

从本地获取中继服务码；Obtain the relay service code from the local;

接收远端终端发送的第二信息，其中，远端终端中携带有中继服务码；其中，中继服务码与PDU会话参数具有关联关系。The second information sent by the remote terminal is received, wherein the remote terminal carries a relay service code; wherein, the relay service code and the PDU session parameter have an associated relationship.

可选的，处理器110，还用于通过以下至少之一的方式确定PDU会话参数：Optionally, the processor 110 is further configured to determine the PDU session parameter in at least one of the following manners:

从本地获取中继服务码，并根据关联关系确定与中继服务码关联的PDU 会话参数；Obtain the relay service code locally, and determine the PDU session parameters associated with the relay service code according to the association relationship;

从第二信息获取中继服务码，并根据关联关系确定与中继服务码关联的PDU会话参数。The relay service code is acquired from the second information, and the PDU session parameters associated with the relay service code are determined according to the association relationship.

此外，如果上述终端为远端终端，则射频单元101，用于向中继终端发送第一信息，其中，第一信息用于确定用户终端路由选择策略URSP。In addition, if the above-mentioned terminal is a remote terminal, the radio frequency unit 101 is configured to send the first information to the relay terminal, where the first information is used to determine the user terminal routing policy URSP.

可选地，射频单元101，还用于向中继终端发送第二信息，其中，远端终端中携带有中继服务码，其中，中继服务码与PDU会话参数具有关联关系。Optionally, the radio frequency unit 101 is further configured to send second information to the relay terminal, wherein the remote terminal carries a relay service code, wherein the relay service code and the PDU session parameter have an associated relationship.

本申请实施例还提供一种可读存储介质，所述可读存储介质上存储有程序或指令，该程序或指令被处理器执行时实现上述中继PDU会话建立的确定方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, each process of the above-mentioned embodiment of the method for determining the establishment of a relay PDU session is implemented , and can achieve the same technical effect, in order to avoid repetition, it is not repeated here.

其中，所述处理器为上述实施例中所述的终端中的处理器。所述可读存储介质，包括计算机可读存储介质，如计算机只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等。Wherein, the processor is the processor in the terminal described in the foregoing embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.

本申请实施例还提供一种计算机程序产品，所述计算机程序产品被存储在非瞬态的存储介质中，所述计算机程序产品被至少一个处理器执行以实现上述中继PDU会话建立的确定方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。The embodiment of the present application further provides a computer program product, the computer program product is stored in a non-transitory storage medium, and the computer program product is executed by at least one processor to implement the above method for determining the establishment of a relay PDU session Each process of the embodiment can achieve the same technical effect, and to avoid repetition, it will not be repeated here.

本申请实施例另提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现上述中继PDU会话建立的确定方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。An embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement the above-mentioned relay PDU session establishment Each process of the method embodiment is determined, and the same technical effect can be achieved. In order to avoid repetition, details are not repeated here.

应理解，本申请实施例提到的芯片还可以称为***级芯片、***芯片、芯片***或片上***芯片等。It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip, or the like.

需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去、或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in the reverse order depending on the functions involved. To perform functions, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to some examples may be combined in other examples.

通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本申请各个实施例所述的方法。From the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is better implementation. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence or in a part that contributes to the prior art, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, CD-ROM), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of this application.

上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the inspiration of this application, without departing from the scope of protection of the purpose of this application and the claims, many forms can be made, which all fall within the protection of this application.

Claims

一种中继数据协议单元PDU会话建立的确定方法，包括：A method for determining the establishment of a relay data protocol unit PDU session, comprising:

中继终端接收远端终端发送的第一信息，其中，所述第一信息用于确定用户终端路由选择策略URSP；The relay terminal receives the first information sent by the remote terminal, wherein the first information is used to determine the routing selection policy URSP of the user terminal;

所述中继终端根据所述第一信息确定所述URSP；determining, by the relay terminal, the URSP according to the first information;

所述中继终端基于PDU会话参数确定与所述URSP匹配的路由描述符；The relay terminal determines a route descriptor matching the URSP based on the PDU session parameter;

所述中继终端确定是否存在与所述路由描述符匹配的中继PDU会话；其中，所述中继PDU会话为所述中继终端中继转发所述远端终端的业务数据的PDU会话。The relay terminal determines whether there is a relay PDU session matching the routing descriptor; wherein, the relay PDU session is a PDU session in which the relay terminal relays and forwards the service data of the remote terminal.
根据权利要求1所述的方法，其中，所述方法还包括以下之一：The method of claim 1, wherein the method further comprises one of the following:

在存在与所述路由描述符匹配的第一PDU会话，且所述第一PDU会话不用于中继转发所述远端终端的业务数据的情况下，所述中继终端建立所述中继PDU会话；In the case that there is a first PDU session matching the routing descriptor, and the first PDU session is not used for relaying and forwarding the service data of the remote terminal, the relay terminal establishes the relay PDU session;

在存在与所述路由描述符匹配的第二PDU会话，且所述第二PDU会话用于中继转发所述远端终端的业务数据的情况下，所述中继终端重用所述第二PDU会话为所述中继PDU会话；In the case that there is a second PDU session matching the routing descriptor, and the second PDU session is used to relay and forward the service data of the remote terminal, the relay terminal reuses the second PDU The session is the relay PDU session;

在不存在与所述路由描述符匹配的PDU会话的情况下，所述中继终端建立所述中继PDU会话。The relay terminal establishes the relay PDU session if there is no PDU session matching the route descriptor.
根据权利要求1所述的方法，其中，所述第一信息包括以下至少一项：The method of claim 1, wherein the first information includes at least one of the following:

业务描述符Traffic descriptor；Traffic descriptor Traffic descriptor;

应用描述符Application descriptors；Application descriptor Application descriptors;

网际互联协议IP描述符IP descriptors；Internet Protocol IP descriptor IP descriptors;

非IP描述符Non-IP descriptors；Non-IP descriptors Non-IP descriptors;

域描述符Domain descriptors；Domain descriptors;

数据网络名称DNN；data network name DNN;

连接能力Connection Capabilities；Connection Capabilities Connection Capabilities;

目标地址信息。Destination address information.
根据权利要求3所述的方法，其中，所述中继终端根据所述第一信息确定所述URSP，包括：The method according to claim 3, wherein the relay terminal determines the URSP according to the first information, comprising:

所述中继终端从配置的URSP规则中的业务描述符中选择与第一信息中的业务描述符匹配的第一业务描述符；The relay terminal selects a first service descriptor matching the service descriptor in the first information from the service descriptors in the configured URSP rule;

所述中继终端选择所述第一业务描述符匹配的所述URSP。The relay terminal selects the URSP that matches the first service descriptor.
根据权利要求1所述的方法，其中，在所述中继终端基于PDU会话参数确定与所述URSP匹配的路由描述符之前，所述方法还包括以下之一：The method according to claim 1, wherein before the relay terminal determines the route descriptor matching the URSP based on the PDU session parameters, the method further comprises one of the following:

所述中继终端从本地获取中继服务码；The relay terminal obtains the relay service code locally;

所述中继终端接收所述远端终端发送的第二信息，其中，所述远端终端中携带有中继服务码；receiving, by the relay terminal, the second information sent by the remote terminal, wherein the remote terminal carries a relay service code;

其中，所述中继服务码与所述PDU会话参数具有关联关系。Wherein, the relay service code is associated with the PDU session parameter.
根据权利要求5所述的方法，其中，所述中继终端通过以下至少之一的方式确定所述PDU会话参数：The method according to claim 5, wherein the relay terminal determines the PDU session parameter in at least one of the following ways:

从本地获取所述中继服务码，并根据所述关联关系确定与所述中继服务码关联的所述PDU会话参数；Obtain the relay service code locally, and determine the PDU session parameter associated with the relay service code according to the association relationship;

从所述第二信息获取所述中继服务码，并根据所述关联关系确定与所述中继服务码关联的所述PDU会话参数。The relay service code is acquired from the second information, and the PDU session parameter associated with the relay service code is determined according to the association relationship.
根据权利要求1或5所述的方法，其中，所述PDU会话参数包括以下至少一项：The method according to claim 1 or 5, wherein the PDU session parameters include at least one of the following:

业务和会话连续性模式、PDU会话类型、DNN、网络切片选择辅助信息NSSAI、首选接入类型Access Type Preference。Service and session continuity mode, PDU session type, DNN, network slice selection auxiliary information NSSAI, preferred access type Access Type Preference.
一种中继PDU会话建立的确定方法，包括：A method for determining the establishment of a relay PDU session, comprising:

远端终端向中继终端发送第一信息，其中，所述第一信息用于确定用户终端路由选择策略URSP。The remote terminal sends first information to the relay terminal, where the first information is used to determine the user terminal routing policy URSP.
根据权利要求8所述的方法，其中，所述方法还包括：The method of claim 8, wherein the method further comprises:

所述远端终端向所述中继终端发送第二信息，其中，所述远端终端中携带有中继服务码，其中，所述中继服务码与PDU会话参数具有关联关系。The remote terminal sends the second information to the relay terminal, wherein the remote terminal carries a relay service code, wherein the relay service code and the PDU session parameter have an associated relationship.
根据权利要求8所述的方法，其中，所述第一信息包括以下至少一项：The method of claim 8, wherein the first information includes at least one of the following:

业务描述符Traffic descriptor；Traffic descriptor Traffic descriptor;

应用描述符Application descriptors；Application descriptor Application descriptors;

网际互联协议IP描述符IP descriptors；Internet Protocol IP descriptor IP descriptors;

非IP描述符Non-IP descriptors；Non-IP descriptors Non-IP descriptors;

域描述符Domain descriptors；Domain descriptors;

数据网络名称DNN；data network name DNN;

连接能力Connection Capabilities；Connection Capabilities Connection Capabilities;

目标地址信息。Destination address information.
根据权利要求9所述的方法，其中，所述第一信息和所述第二信息通过以下至少一项的消息传输：The method of claim 9, wherein the first information and the second information are transmitted by a message of at least one of the following:

直接建立请求消息；Directly create a request message;

直接链路鉴权回复消息；Direct link authentication reply message;

直接链路安全命令完成消息；Direct Link Security Command Complete message;

直接链路更改请求消息；direct link change request message;

直接链路更改回复消息。Direct link change reply message.
根据权利要求8所述的方法，其中，所述远端终端向中继终端发送第一信息包括：The method according to claim 8, wherein sending the first information by the remote terminal to the relay terminal comprises:

在所述远端终端和所述中继终端安全连接建立后，所述远端终端向所述中继终端发送所述第一信息。After the secure connection between the remote terminal and the relay terminal is established, the remote terminal sends the first information to the relay terminal.
根据权利要求9所述的方法，其中，所述远端终端向所述中继终端发送第二信息包括：The method according to claim 9, wherein sending the second information by the remote terminal to the relay terminal comprises:

在所述远端终端和所述中继终端安全连接建立后，所述远端终端向所述中继终端发送第二信息；After the secure connection between the remote terminal and the relay terminal is established, the remote terminal sends the second information to the relay terminal;

其中，在所述第二信息包括以下至少一项：业务和会话连续性模式、PDU会话类型、DNN、NSSAI。Wherein, the second information includes at least one of the following: service and session continuity mode, PDU session type, DNN, and NSSAI.
一种中继PDU会话建立的确定装置，应用中继终端，包括：A device for determining the establishment of a relay PDU session, applied to a relay terminal, includes:

第一接收模块，用于接收远端终端发送的第一信息，其中，所述第一信息用于确定用户终端路由选择策略URSP；a first receiving module, configured to receive first information sent by a remote terminal, where the first information is used to determine a user terminal routing policy URSP;

第一确定模块，用于根据所述第一信息确定所述URSP；a first determining module, configured to determine the URSP according to the first information;

第二确定模块，用于基于PDU会话参数确定与所述URSP匹配的路由描述符；A second determining module, configured to determine a route descriptor matching the URSP based on the PDU session parameter;

第三确定模块，用于确定是否存在与所述路由描述符匹配的中继PDU会话；其中，所述中继PDU会话为所述中继终端中继转发所述远端终端的业务数据的PDU会话。a third determining module, configured to determine whether there is a relay PDU session matching the routing descriptor; wherein, the relay PDU session is a PDU that the relay terminal relays and forwards the service data of the remote terminal session.
根据权利要求14所述的装置，其中，所述装置还包括以下之一：The apparatus of claim 14, wherein the apparatus further comprises one of:

第一建立模块，用于在存在与所述路由描述符匹配的第一PDU会话，且所述第一PDU会话不用于中继转发所述远端终端的业务数据的情况下，建立所述中继PDU会话；A first establishment module, configured to establish the middle-end terminal when there is a first PDU session matching the routing descriptor, and the first PDU session is not used for relaying and forwarding the service data of the remote terminal. Continue the PDU session;

重用模块，用于在存在与所述路由描述符匹配的第二PDU会话，且所述第二PDU会话用于中继转发所述远端终端的业务数据的情况下，重用所述第二PDU会话为所述中继PDU会话；A reuse module, configured to reuse the second PDU in the case that there is a second PDU session matching the routing descriptor, and the second PDU session is used to relay and forward the service data of the remote terminal The session is the relay PDU session;

第二建立模块，用于在不存在与所述路由描述符匹配的PDU会话的情况下，建立所述中继PDU会话。A second establishing module, configured to establish the relay PDU session in the case that there is no PDU session matching the routing descriptor.
根据权利要求14所述的装置，其中，所述第一信息包括以下至少一项：The apparatus of claim 14, wherein the first information includes at least one of the following:

业务描述符Traffic descriptor；Traffic descriptor Traffic descriptor;

应用描述符Application descriptors；Application descriptor Application descriptors;

网际互联协议IP描述符IP descriptors；Internet Protocol IP descriptor IP descriptors;

非IP描述符Non-IP descriptors；Non-IP descriptors Non-IP descriptors;

域描述符Domain descriptors；Domain descriptors;

数据网络名称DNN；data network name DNN;

连接能力Connection Capabilities；Connection Capabilities Connection Capabilities;

目标地址信息。Destination address information.
根据权利要求16所述的装置，其中，所述第一确定模块包括：The apparatus of claim 16, wherein the first determining module comprises:

第一选择单元，用于从配置的URSP规则中的业务描述符中选择与第一信息中的业务描述符匹配的第一业务描述符；a first selection unit, configured to select a first service descriptor matching the service descriptor in the first information from the service descriptors in the configured URSP rule;

第一选择单元，用于选择所述第一业务描述符匹配的所述URSP。A first selection unit, configured to select the URSP that matches the first service descriptor.
根据权利要求14所述的装置，其中，所述装置还包括以下之一：The apparatus of claim 14, wherein the apparatus further comprises one of:

第一获取模块，用于在基于PDU会话参数确定与所述URSP匹配的路由描述符之前，从本地获取中继服务码；The first acquisition module is used to obtain the relay service code locally before determining the route descriptor matching with the URSP based on the PDU session parameter;

第二接收模块，用于接收所述远端终端发送的第二信息，其中，所述远端终端中携带有中继服务码；a second receiving module, configured to receive the second information sent by the remote terminal, wherein the remote terminal carries a relay service code;

其中，所述中继服务码与所述PDU会话参数具有关联关系。Wherein, the relay service code is associated with the PDU session parameter.
根据权利要求18所述的装置，其中，所述装置还包括：The apparatus of claim 18, wherein the apparatus further comprises:

第二获取模块，用于通过以下至少之一的方式确定所述PDU会话参数：A second acquiring module, configured to determine the PDU session parameters by at least one of the following methods:

从本地获取所述中继服务码，并根据所述关联关系确定与所述中继服务码关联的所述PDU会话参数；Obtain the relay service code locally, and determine the PDU session parameter associated with the relay service code according to the association relationship;

从所述第二信息获取所述中继服务码，并根据所述关联关系确定与所述中继服务码关联的所述PDU会话参数。The relay service code is acquired from the second information, and the PDU session parameter associated with the relay service code is determined according to the association relationship.
根据权利要求14或18所述的装置，其中，所述PDU会话参数包括以下至少一项：The apparatus of claim 14 or 18, wherein the PDU session parameters include at least one of the following:

业务和会话连续性模式、PDU会话类型、DNN、网络切片选择辅助信息NSSAI、首选接入类型Access Type Preference。Service and session continuity mode, PDU session type, DNN, network slice selection auxiliary information NSSAI, preferred access type Access Type Preference.
一种中继PDU会话建立的确定装置，应用于远端终端，包括：A device for determining the establishment of a relay PDU session, applied to a remote terminal, includes:

第一发送模块，用于向中继终端发送第一信息，其中，所述第一信息用于确定用户终端路由选择策略URSP。The first sending module is configured to send first information to the relay terminal, wherein the first information is used to determine the routing selection policy URSP of the user terminal.
根据权利要求21所述的装置，其中，所述装置还包括：The apparatus of claim 21, wherein the apparatus further comprises:

第二发送模块，用于向所述中继终端发送第二信息，其中，所述远端终端中携带有中继服务码，其中，所述中继服务码与PDU会话参数具有关联关系。The second sending module is configured to send second information to the relay terminal, wherein the remote terminal carries a relay service code, wherein the relay service code is associated with the PDU session parameter.
根据权利要求21所述的装置，其中，所述第一信息包括以下至少一项：The apparatus of claim 21, wherein the first information includes at least one of the following:

业务描述符Traffic descriptor；Traffic descriptor Traffic descriptor;

应用描述符Application descriptors；Application descriptor Application descriptors;

网际互联协议IP描述符IP descriptors；Internet Protocol IP descriptor IP descriptors;

非IP描述符Non-IP descriptors；Non-IP descriptors Non-IP descriptors;

域描述符Domain descriptors；Domain descriptors;

数据网络名称DNN；data network name DNN;

连接能力Connection Capabilities；Connection Capabilities Connection Capabilities;

目标地址信息。Destination address information.
根据权利要求22所述的装置，其中，所述第一信息和所述第二信息通过以下至少一项的消息传输：23. The apparatus of claim 22, wherein the first information and the second information are transmitted by a message of at least one of the following:

直接建立请求消息；Directly create a request message;

直接链路鉴权回复消息；Direct link authentication reply message;

直接链路安全命令完成消息；Direct Link Security Command Complete message;

直接链路更改请求消息；direct link change request message;

直接链路更改回复消息。Direct link change reply message.
根据权利要求21所述的装置，其中，The apparatus of claim 21, wherein,

所述第一发送模块，还用于在所述远端终端和所述中继终端安全连接建立后，向所述中继终端发送所述第一信息。The first sending module is further configured to send the first information to the relay terminal after the secure connection between the remote terminal and the relay terminal is established.
根据权利要求22所述的装置，其中，The apparatus of claim 22, wherein,

所述第二发送模块，还用于在所述远端终端和所述中继终端安全连接建立后，向所述中继终端发送第二信息；The second sending module is further configured to send second information to the relay terminal after the remote terminal and the relay terminal are securely connected;

其中，在所述第二信息包括以下至少一项：业务和会话连续性模式、PDU会话类型、DNN、NSSAI。Wherein, the second information includes at least one of the following: service and session continuity mode, PDU session type, DNN, and NSSAI.
一种终端，包括处理器，存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令，其中，所述程序或指令被所述处理器执行时实现如权利要求1至7任一项所述的方法步骤，或者实现如权利要求8至13任一项所述的方法步骤。A terminal, comprising a processor, a memory, and a program or instruction stored on the memory and executable on the processor, wherein, when the program or instruction is executed by the processor, the implementation of claims 1 to 7. The method steps of any one of claims 8 to 13, or implementing the method steps of any one of claims 8 to 13.
一种可读存储介质，所述可读存储介质上存储程序或指令，其中，所述程序或指令被处理器执行时实现如权利要求1至7任一项所述的方法步骤，或者实现如权利要求8至13任一项所述的方法步骤。A readable storage medium on which programs or instructions are stored, wherein, when the program or instructions are executed by a processor, the method steps according to any one of claims 1 to 7 are implemented, or the method steps as claimed in any one of claims 1 to 7 are implemented. The method steps of any one of claims 8 to 13.
一种芯片，包括处理器和通信接口，所述通信接口和所述处理器耦合，其中，所述处理器用于运行程序或指令，实现如权利要求1至7任一项所述的方法步骤，或者实现如权利要求8至13任一项所述的方法步骤。A chip, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, wherein the processor is used to run a program or an instruction to implement the method steps according to any one of claims 1 to 7, Or implement method steps as claimed in any one of claims 8 to 13 .
一种计算机程序产品，所述计算机程序产品被存储在非瞬态的可读存储介质中，其中，所述计算机程序产品被中继终端的至少一个处理器执行以实现如权利要求1至7任一项所述的方法步骤，或者被远端终端的至少一个处理器执行以实现如权利要求8至13任一项所述的方法步骤。A computer program product, which is stored in a non-transitory readable storage medium, wherein the computer program product is executed by at least one processor of a relay terminal to implement any one of claims 1 to 7. A method step as claimed in any one of claims 8 to 13, or executed by at least one processor of a remote terminal to implement a method step as claimed in any one of claims 8 to 13.
一种通信设备，被配置为执行如权利要求1至7任一项所述的方法步骤，或者实现如权利要求8至13任一项所述的方法步骤。A communication device configured to perform the method steps of any one of claims 1 to 7, or to implement the method steps of any one of claims 8 to 13.