WO2021219068A1

WO2021219068A1 - Reselection method for relay user equipment, and user equipment

Info

Publication number: WO2021219068A1
Application number: PCT/CN2021/090891
Authority: WO
Inventors: 郑倩
Original assignee: 维沃移动通信有限公司
Priority date: 2020-04-30
Filing date: 2021-04-29
Publication date: 2021-11-04
Also published as: CN113596934B; CN113596934A

Abstract

Disclosed are a reselection method for a relay user equipment, and a user equipment, which belong to the technical field of communications. The reselection method for a relay user equipment comprises: where it is determined that a first relay UE meets a relay reselection condition, triggering a relay reselection flow, wherein the first relay UE is a UE that currently provides a relay service for a remote UE; and determining that a first relay UE meets a relay reselection condition comprises at least one of the following: determining to send a sidelink RRC reconfiguration failure message; determining that the first relay UE receives the sidelink RRC reconfiguration failure message; receiving the sidelink RRC reconfiguration failure message sent by the first relay UE; determining that a sidelink RRC reconfiguration flow fails; and determining that sidelink SRB integrity protection verification fails.

Description

中继终端设备的重选方法和终端设备Reselection method of relay terminal equipment and terminal equipment

交叉引用cross reference

本发明要求在2020年04月30日在中国提交的申请号为202010368309.1、发明名称为“中继终端设备的重选方法和终端设备”的中国专利申请的优先权，该申请的全部内容通过引用结合在本发明中。The present invention claims the priority of a Chinese patent application filed in China on April 30, 2020 with the application number 202010368309.1 and the title of the invention "Reselection method and terminal equipment for relay terminal equipment". The entire content of the application is incorporated by reference. Incorporated in the present invention.

技术领域Technical field

本申请涉及通信领域，尤其涉及一种中继终端设备的重选方法和终端设备。This application relates to the field of communications, and in particular to a method for reselecting a relay terminal device and a terminal device.

背景技术Background technique

目前，长期演进(Long Term Evolution，LTE)***支持副链路(Sidelink，SL，也可称之为侧链路、旁链路或边链路等)传输。SL用于用户设备(User Equipment，UE，也可称为终端设备)之间不通过网络设备直接进行数据传输，如图1所示。At present, the Long Term Evolution (LTE) system supports secondary link (Sidelink, SL, also referred to as side link, side link, or side link, etc.) transmission. SL is used to directly transmit data between user equipment (User Equipment, UE, also called terminal equipment) without using network equipment, as shown in Figure 1.

另外，LTE***也支持基于中继(relay)技术的通信机制，具体可以为UE-to-Network relay，即中继终端设备(relay UE)的一端基于PC5接口连接UE、另一端基于Uu接口连接网络侧，其中，relay UE连接的UE可以称为远端终端设备(remote UE)，如图2所示的两跳中继，relay UE将一个网络设备-UE链路分割为网络设备-relay UE和relay UE-remote UE两个链路，从而有机会将一个质量较差的链路替换为两个质量较好的链路，以获得更高的链路容量及更好的覆盖。LTE***中，当remote UE满足一定条件后，会进行relay UE的选择或者重选。目前relay UE的选择，主要是基于UE与网络侧间的链路以及在sidelink上的信号质量共同确定；而目前的重选主要是当remote UE发现副链路发现参考信号接收功率(Sidelink Discovery Reference Signal Received Power，SD-RSRP)的测量结果小于某个门限值时，或者由remote UE的上层触发重选。In addition, the LTE system also supports a communication mechanism based on the relay technology, specifically UE-to-Network relay, that is, one end of the relay terminal equipment (relay UE) is connected to the UE based on the PC5 interface, and the other end is connected based on the Uu interface. On the network side, the UE to which the relay UE is connected can be called a remote terminal device (remote UE), as shown in Figure 2 as a two-hop relay, the relay UE divides a network device-UE link into network devices-relay UE And relay UE-remote UE two links, so there is an opportunity to replace a poor quality link with two better quality links to obtain higher link capacity and better coverage. In the LTE system, when the remote UE meets certain conditions, a relay UE will be selected or reselected. At present, the selection of the relay UE is mainly based on the joint determination of the link between the UE and the network side and the signal quality on the sidelink; while the current reselection is mainly when the remote UE discovers the secondary link and finds the reference signal received power (Sidelink Discovery Reference) When the measurement result of Signal Received Power (SD-RSRP) is less than a certain threshold, or the upper layer of the remote UE triggers reselection.

而对于新空口(New Radio，NR)sidelink，其具有不同于LTE sidelink的一些特性，比如NR sidelink支持PC5-无线资源控制(Radio Resource Control，RRC)连接、引入PC5-信令无线承载(Signalling Radio Bearer，SRB)等，这会对基于NR sidelink的中继(relay)通信机制设计造成一定的影响。因此，在实现本申请过程中，发明人发现现有技术中至少存在如下问题：在考虑前述NR sidelink的一些新特性时，如何实现relay UE的重选机制。For New Radio (NR) sidelink, it has some characteristics different from LTE sidelink. For example, NR sidelink supports PC5-radio resource control (Radio Resource Control, RRC) connection, and introduces PC5-signaling radio bearer (Signalling Radio). Bearer, SRB), etc., which will have a certain impact on the design of NR sidelink-based relay communication mechanism. Therefore, in the process of implementing this application, the inventor found that at least the following problems exist in the prior art: when considering some of the new features of the aforementioned NR sidelink, how to implement a relay UE reselection mechanism.

发明内容Summary of the invention

本申请实施例的目的是提供一种中继终端设备的重选方法和终端设备，以解决在考虑NR sidelink的一些新特性时，如何实现relay UE的重选机制的问题。The purpose of the embodiments of this application is to provide a relay terminal equipment reselection method and terminal equipment to solve the problem of how to implement a relay UE reselection mechanism when considering some new features of NR sidelink.

第一方面，本申请实施例提供一种中继终端设备的重选方法，应用于远端终端设备，所述方法包括：In the first aspect, an embodiment of the present application provides a method for reselecting a relay terminal device, which is applied to a remote terminal device, and the method includes:

在确定第一中继终端设备满足中继重选条件的情况下，触发中继重选流程，所述第一中继UE是当前为所述远端UE提供中继服务的UE；其中，所述确定第一中继UE满足中继重选条件包括以下至少之一：确定发送副链路RRC重配置失败消息；确定所述第一中继UE接收到所述副链路RRC重配置失败消息；接收到所述第一中继UE发送的副链路RRC重配置失败消息；确定副链路RRC重配置流程失败；确定副链路SRB完整性保护验证失败。When it is determined that the first relay terminal device satisfies the relay reselection condition, the relay reselection procedure is triggered, and the first relay UE is the UE currently providing the relay service for the remote UE; The determining that the first relay UE satisfies the relay reselection condition includes at least one of the following: determining to send a secondary link RRC reconfiguration failure message; determining that the first relay UE receives the secondary link RRC reconfiguration failure message Receiving the secondary link RRC reconfiguration failure message sent by the first relay UE; determining that the secondary link RRC reconfiguration process fails; determining that the secondary link SRB integrity protection verification fails.

第二方面，本申请实施例提供一种远端终端设备，包括：In the second aspect, an embodiment of the present application provides a remote terminal device, including:

处理模块，用于在确定第一中继UE满足中继重选条件的情况下，触发中继重选流程，所述第一中继UE是当前为所述远端UE提供中继服务的UE；其中，所述确定第一中继UE满足中继重选条件包括以下至少之一：确定发送副链路RRC重配置失败消息；确定所述第一中继UE接收到所述副链路 RRC重配置失败消息；接收到所述第一中继UE发送的副链路RRC重配置失败消息；确定副链路RRC重配置流程失败；确定副链路SRB完整性保护验证失败。A processing module, configured to trigger a relay reselection procedure when it is determined that the first relay UE satisfies the relay reselection condition, and the first relay UE is the UE that currently provides relay services for the remote UE Wherein, the determining that the first relay UE satisfies the relay reselection condition includes at least one of the following: determining to send a secondary link RRC reconfiguration failure message; determining that the first relay UE receives the secondary link RRC Reconfiguration failure message; receiving the secondary link RRC reconfiguration failure message sent by the first relay UE; determining that the secondary link RRC reconfiguration process fails; determining that the secondary link SRB integrity protection verification fails.

第三方面，本申请实施例提供一种终端设备，包括：存储器、处理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 third aspect, an embodiment of the present application provides a terminal device, including: a memory, a processor, and a program or instruction that is stored on the memory and can run on the processor, and the program or instruction is processed by the processor. The steps of the method described in the first aspect are implemented when the device is executed.

第四方面，本申请实施例提供一种可读存储介质，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。In a fourth aspect, an embodiment of the present application provides a readable storage medium storing a program or instruction 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 are implemented.

第五方面，本申请实施例提供一种中继终端设备的重选方法，应用于中继终端设备，所述方法包括：In a fifth aspect, an embodiment of the present application provides a method for reselecting a relay terminal device, which is applied to a relay terminal device, and the method includes:

在确定满足中继重选条件的情况下，停止为远端UE提供中继服务；其中，所述确定满足中继重选条件包括以下至少之一：确定发送副链路RRC重配置失败消息；确定所述远端UE接收到所述副链路RRC重配置失败消息；接收到所述远端UE发送的所述副链路RRC重配置失败消息；确定副链路RRC重配置流程失败；确定副链路SRB完整性保护验证失败；确定基于Uu接口的DRB和SRB中的至少一个完整性保护验证失败，所述基于Uu接口的DRB和SRB中的至少一个用于中转所述远端UE的数据和/或信令。When it is determined that the relay reselection condition is satisfied, stop providing the relay service for the remote UE; wherein the determining that the relay reselection condition is satisfied includes at least one of the following: determining to send a secondary link RRC reconfiguration failure message; Determine that the remote UE receives the secondary link RRC reconfiguration failure message; receive the secondary link RRC reconfiguration failure message sent by the remote UE; determine that the secondary link RRC reconfiguration process fails; OK The secondary link SRB integrity protection verification fails; it is determined that at least one of the Uu interface-based DRB and SRB integrity protection verification fails, and at least one of the Uu interface-based DRB and SRB is used to transfer the remote UE Data and/or signaling.

第六方面，本申请实施例提供一种中继终端设备，包括：In a sixth aspect, an embodiment of the present application provides a relay terminal device, including:

处理模块，用于在确定满足中继重选条件的情况下，停止为远端UE提供中继服务；其中，所述确定满足中继重选条件包括以下至少之一：确定发送副链路RRC重配置失败消息；确定所述远端UE接收到所述副链路RRC重配置失败消息；接收到所述远端UE发送的所述副链路RRC重配置失败消息；确定副链路RRC重配置流程失败；确定副链路SRB完整性保护验证失败；确定基于Uu接口的DRB和SRB中的至少一个完整性保护验证失败，所述基于Uu接口的DRB和SRB中的至少一个用于中转所述远端UE的数据和/或信令。The processing module is configured to stop providing relay services for the remote UE when it is determined that the relay reselection condition is satisfied; wherein the determining that the relay reselection condition is satisfied includes at least one of the following: determining to send the secondary link RRC Reconfiguration failure message; determine that the remote UE receives the secondary link RRC reconfiguration failure message; receive the secondary link RRC reconfiguration failure message sent by the remote UE; determine that the secondary link RRC reconfiguration fails The configuration process fails; it is determined that the secondary link SRB integrity protection verification fails; it is determined that at least one of the Uu interface-based DRB and SRB integrity protection verification fails, and at least one of the Uu interface-based DRB and SRB is used for the relay station The data and/or signaling of the remote UE.

第七方面，本申请实施例提供一种终端设备，包括：存储器、处理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五方面所述的方法的步骤。In a seventh aspect, an embodiment of the present application provides a terminal device, including: a memory, a processor, and a program or instruction that is stored on the memory and can run on the processor, and the program or instruction is processed by the processor. The steps of the method described in the fifth aspect are implemented when the device is executed.

第八方面，本申请实施例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，所述程序或指令被处理器执行时实现如第五方面所述的方法的步骤。In an eighth aspect, an embodiment of the present application provides a readable storage medium with a program or instruction 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 fifth aspect are implemented .

在本申请实施例中，远端UE可以在确定当前为其提供中继服务的第一中继UE满足中继重选条件的情况下，触发相应的中继重选流程，具体而言，考虑到NR副链路的一些新特性，使得远端UE在副链路RRC连接失败的各种情况下，均能够进行中继重选。如此，可以确保远端UE总是能在一个可靠的中继UE上进行业务传输。In the embodiment of the present application, the remote UE may trigger the corresponding relay reselection process when it is determined that the first relay UE currently providing the relay service for it satisfies the relay reselection conditions. Specifically, consider Some new features of the secondary link to the NR enable the remote UE to perform relay reselection in various situations where the secondary link RRC connection fails. In this way, it can be ensured that the remote UE can always perform service transmission on a reliable relay UE.

附图说明Description of the drawings

此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The exemplary embodiments and descriptions of the application are used to explain the application, and do not constitute an improper limitation of the application. In the attached picture:

图1是本申请实施例中包含副链路的通信场景的示意图；FIG. 1 is a schematic diagram of a communication scenario including a secondary link in an embodiment of the present application;

图2是本申请实施例中基于中继架构的通信场景的示意图；Fig. 2 is a schematic diagram of a communication scenario based on a relay architecture in an embodiment of the present application;

图3是本申请实施例中一种中继终端设备的重选方法的流程示意图；FIG. 3 is a schematic flowchart of a method for reselecting a relay terminal device in an embodiment of the present application;

图4是本申请实施例中第二种中继终端设备的重选方法的流程示意图；4 is a schematic flowchart of a second method for reselecting relay terminal equipment in an embodiment of the present application;

图5是本申请实施例中一种中继终端设备的重选流程示意图；FIG. 5 is a schematic diagram of a reselection process of a relay terminal device in an embodiment of the present application;

图6是本申请实施例中第二种中继终端设备的重选流程示意图；FIG. 6 is a schematic diagram of the reselection process of the second type of relay terminal equipment in an embodiment of the present application;

图7是本申请实施例中第三种中继终端设备的重选流程示意图；FIG. 7 is a schematic diagram of a reselection process of a third type of relay terminal equipment in an embodiment of the present application;

图8是本申请实施例中第四种中继终端设备的重选流程示意图；FIG. 8 is a schematic diagram of a reselection process of a fourth type of relay terminal equipment in an embodiment of the present application;

图9是本申请实施例中第五种中继终端设备的重选流程示意图；FIG. 9 is a schematic diagram of a reselection process of a fifth type of relay terminal equipment in an embodiment of the present application;

图10是本申请实施例中第六种中继终端设备的重选流程示意图；FIG. 10 is a schematic diagram of a reselection process of a sixth type of relay terminal equipment in an embodiment of the present application;

图11是本申请实施例中远端终端设备的结构示意图；FIG. 11 is a schematic structural diagram of a remote terminal device in an embodiment of the present application;

图12是本申请实施例中中继终端设备的结构示意图；FIG. 12 is a schematic structural diagram of a relay terminal device in an embodiment of the present application;

图13是本申请实施例中终端设备的结构示意图。FIG. 13 is a schematic diagram of the structure of a terminal device in 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、完整地描述，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在没有作出创造性劳动前提下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 described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of them. 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数据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。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" and "second" in the specification and claims of this application are used to distinguish similar objects, but not to describe a specific sequence or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in a sequence other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of the connected objects, and the character "/" generally means that the associated objects before and after are in an "or" relationship.

本申请的技术方案，可以应用于各种通信***，例如：全球移动通讯***(Global System of Mobile communication，GSM)，码分多址(Code Division Multiple Access，CDMA)***，宽带码分多址(Wideband Code Division Multiple Access，WCDMA)，通用分组无线业务(General Packet Radio Service，GPRS)，长期演进/增强长期演进(Long Term EvolutionAdvanced，LTE-A)，NR等。The technical solution of this application can be applied to various communication systems, such as: Global System of Mobile Communications (GSM), Code Division Multiple Access (CDMA) systems, and Wideband Code Division Multiple Access (GSM) systems. Wideband Code Division Multiple Access (WCDMA), General Packet Radio Service (GPRS), Long Term Evolution/Enhanced Long Term Evolution (Long Term Evolution Advanced, LTE-A), NR, etc.

用户端UE也可称之为终端设备(Mobile Terminal)、移动用户设备等，可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信，用户设备可以是终端设备，如移动电话(或称为“蜂窝”电话)和具有终端设备的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。User-side UE can also be called terminal equipment (Mobile Terminal), mobile user equipment, etc., and can communicate with one or more core networks via a radio access network (RAN), and user equipment can be terminal equipment. Such as mobile phones (or "cellular" phones) and computers with terminal equipment. For example, they can be portable, pocket-sized, handheld, computer-built or vehicle-mounted mobile devices, which exchange languages and/or wireless access networks. Or data.

网络设备，也可称之为基站，可以是GSM或CDMA中的基站(Base Transceiver Station，BTS)，也可以是WCDMA中的基站(NodeB)，还可以是LTE中的演进型基站(evolutional Node B，eNB或e-NodeB)及5G基站(gNB)。Network equipment, also called a base station, can be a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB) in WCDMA, or an evolved base station (evolutional Node B) in LTE , ENB or e-NodeB) and 5G base station (gNB).

另外，LTE sidelink的设计适用于特定的公共安全事务，比如火灾或地震等灾难场所进行紧急通讯、车联网(vehicle to everything，V2X)通信等。其中，车联网通信包括基本安全类通信、高级(自动)驾驶、编队和传感器扩展等各种业务。然而，由于LTESL只支持广播通信，因此主要用于基本安全类通信，其他在时延、可靠性等方面具有严格服务质量(QoS，Quality of Service)需求的高级V2X业务将通过NRsidelink支持。In addition, the design of LTE sidelink is suitable for specific public safety affairs, such as emergency communications in disaster sites such as fires or earthquakes, and vehicle to everything (V2X) communications. Among them, the Internet of Vehicles communication includes various services such as basic safety communication, advanced (automatic) driving, formation and sensor expansion. However, because LTESL only supports broadcast communications, it is mainly used for basic security communications. Other advanced V2X services that have strict QoS (Quality of Service) requirements in terms of delay and reliability will be supported by NRsidelink.

5G NR***可用于LTE所不支持的6GHz以上的工作频段，支持更大的工作带宽。但目前版本的NR***只支持网络设备(比如基站)与终端设备间的接口，尚不支持终端设备之间直接通信的Sidelink接口(也可以称作PC5接口)。The 5G NR system can be used in working frequency bands above 6GHz that LTE does not support, and supports larger working bandwidth. However, the current version of the NR system only supports the interface between network devices (such as base stations) and terminal devices, and does not yet support the Sidelink interface (also known as the PC5 interface) for direct communication between terminal devices.

其中，SL传输主要分为广播(broadcast)、组播(groupcast)和单播(unicast)三种传输形式。其中，SL单播和组播通信支持混合自动重传请求(Hybrid automatic repeat request，HARQ)反馈机制。Among them, SL transmission is mainly divided into three transmission forms: broadcast, groupcast and unicast. Among them, SL unicast and multicast communications support a hybrid automatic repeat request (Hybrid automatic repeat request, HARQ) feedback mechanism.

上述SL单播支持PC5无线资源控制，其中发送方TX UE支持对接收方RX UE进行RRC重配置(也可称为RRC连接重配置)流程，具体而言，由TX UE向RX UE发送副链路RRC重配置消息(RRC Configuration Sidelink)，RX UE根据具体结果向TX UE反馈副链路RRC重配置成功或失败消息。The above-mentioned SL unicast supports PC5 radio resource control, where the sender TX UE supports the RRC reconfiguration (also called RRC connection reconfiguration) process for the receiver RX UE. Specifically, the TX UE sends the secondary link to the RX UE. RRC reconfiguration message (RRC Configuration Sidelink), the RX UE feeds back the secondary link RRC reconfiguration success or failure message to the TX UE according to the specific result.

进一步地，对于一个基于副链路的中继架构***而言，如图2所示的典型的UE-to-network relay场景，remote UE需要与网络侧传输数据，但由于覆盖不佳，找到relay UE为其中转，其中，relay UE与网络设备之间是Uu接口，relay UE和remote UE之间是PC5接口。一般来说，relayUE是开放的，可以为任何remote UE提供中继服务。当然，除了上述UE-to-network relay场景外，还包括UE-to-UE relay场景，在该场景中，relay UE两端连接的是不同的终端设备。Further, for a secondary link-based relay architecture system, as shown in the typical UE-to-network relay scenario shown in Figure 2, the remote UE needs to transmit data with the network side, but due to poor coverage, the relay is found The UE is the intermediate transfer, where the Uu interface is between the relay UE and the network equipment, and the PC5 interface is between the relay UE and the remote UE. Generally speaking, the relayUE is open and can provide relay services for any remote UE. Of course, in addition to the aforementioned UE-to-network relay scenario, it also includes a UE-to-UE relay scenario. In this scenario, the two ends of the relay are connected to different terminal devices.

以下结合附图，详细说明本申请各实施例提供的技术方案。The technical solutions provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

参见图3所示，本申请实施例提供一种中继终端设备的中继方法，由远端终端设备执行，方法包括以下流程步骤：As shown in FIG. 3, an embodiment of the present application provides a relay method for a relay terminal device, which is executed by a remote terminal device, and the method includes the following process steps:

步骤101：在确定第一中继UE满足中继重选条件的情况下，触发中继重选流程，所述第一中继UE是当前为所述远端UE提供中继服务的UE。Step 101: When it is determined that the first relay UE satisfies the relay reselection condition, trigger the relay reselection process, and the first relay UE is the UE that currently provides the relay service for the remote UE.

其中，上述确定第一中继UE满足中继重选条件包括以下至少之一：确定发送副链路RRC重配置失败消息；确定所述第一中继UE接收到所述副链路RRC重配置失败消息；接收到所述第一中继UE发送的副链路RRC重配置失败消息；确定副链路RRC重配置流程失败；确定副链路SRB完整性保护验证失败。Wherein, the foregoing determining that the first relay UE satisfies the relay reselection condition includes at least one of the following: determining to send a secondary link RRC reconfiguration failure message; determining that the first relay UE receives the secondary link RRC reconfiguration Failure message; receiving the secondary link RRC reconfiguration failure message sent by the first relay UE; determining that the secondary link RRC reconfiguration process fails; determining that the secondary link SRB integrity protection verification fails.

其中，上述第一中继UE满足中继重选条件也可以理解为第一中继UE不满足为远端UE提供中继服务的条件。Wherein, the foregoing first relay UE meeting the relay reselection condition can also be understood as the first relay UE not meeting the condition for providing the relay service for the remote UE.

其中，上述副链路SRB用于承载以下内容至少之一：激活安全的PC5-S消息；安全保护的PC5-S消息；安全保护的PC5-RRC消息。其中，所述安全指的是完整性保护和/或加密机制。Wherein, the aforementioned secondary link SRB is used to carry at least one of the following contents: a PC5-S message for activating safety; a PC5-S message for safety protection; and a PC5-RRC message for safety protection. Wherein, the security refers to integrity protection and/or encryption mechanism.

可以理解，对于远端UE而言，上述副链路RRC连接失败的情况可以包括以下至少之一：(1)在确定已向当前为其提供中继服务的第一中继UE发送副链路RRC重配置失败消息的情况下，可以确定副链路RRC连接失败，如图6所示的场景，该场景下由中继UE发起副链路RRC重配置消息；(2)在确定当前为其提供中继服务的第一中继UE接收到副链路RRC重配置失败消息的情况下，可以确定副链路RRC连接失败，如图6所示的场景，该场景下由中继UE发起副链路RRC重配置消息；(3)在确定接收到当前为其提供中继服务的第一中继UE发送的副链路RRC重配置失败消息的情况下，可以确定副链路RRC连接失败，如图5所示的场景，该场景下由远端UE发起副链路RRC重配置消息；(4)在确定副链路RRC重配置流程失败的情况下，可以确定副链路RRC连接失败；(5)在确定副链路SRB完整性保护验证失败的情况下，可以确定副链路RRC连接失败，如图9所示的场景。It can be understood that, for the remote UE, the above-mentioned secondary link RRC connection failure may include at least one of the following: (1) After determining that the secondary link has been sent to the first relay UE that currently provides the relay service for the secondary link In the case of the RRC reconfiguration failure message, it can be determined that the secondary link RRC connection failed. As shown in the scenario shown in Figure 6, the relay UE initiates the secondary link RRC reconfiguration message; (2) It is determined that it is currently When the first relay UE providing the relay service receives the secondary link RRC reconfiguration failure message, it can be determined that the secondary link RRC connection fails, as shown in the scenario shown in Figure 6, in which the relay UE initiates the secondary link. Link RRC reconfiguration message; (3) In the case where it is determined that the secondary link RRC reconfiguration failure message sent by the first relay UE that currently provides the relay service for it has been received, it can be determined that the secondary link RRC connection failed, In the scenario shown in Figure 5, the remote UE initiates the secondary link RRC reconfiguration message in this scenario; (4) In the case where it is determined that the secondary link RRC reconfiguration process fails, it can be determined that the secondary link RRC connection fails; (5) In the case where it is determined that the secondary link SRB integrity protection verification fails, it can be determined that the secondary link RRC connection fails, as shown in the scenario in FIG. 9.

可选的，在本申请实施例的中继UE的重选方法中，还可以进一步包括如下内容：Optionally, in the relay UE reselection method in the embodiment of the present application, the following content may be further included:

向所述远端UE的上层发送第一信息；其中，所述第一信息用于指示所述第一中继UE满足所述中继重选条件。Sending first information to the upper layer of the remote UE; where the first information is used to indicate that the first relay UE satisfies the relay reselection condition.

可以理解，当远端UE触发中继重选流程后，可以通知自己的上层，此时为远端UE提供中继服务的第一中继UE满足中继重选条件。如此，可以使得远端UE的上层在接收到该第一信息时，触发远端UE与第一中继UE间的单播连接释放流程、以及触发远端UE与其他中继UE之间的新的单播连接发现流程和新的单播连接建立流程中的至少一个。其中，远端UE的上层可以指接入层AS以上。It can be understood that when the remote UE triggers the relay reselection procedure, it can notify its own upper layer, and at this time, the first relay UE that provides the relay service for the remote UE meets the relay reselection condition. In this way, when the upper layer of the remote UE receives the first information, it can trigger the unicast connection release procedure between the remote UE and the first relay UE, and trigger the new connection between the remote UE and other relay UEs. At least one of the unicast connection discovery process and the new unicast connection establishment process. Among them, the upper layer of the remote UE may be above the access layer AS.

可选的，在本申请实施例的中继UE的重选方法中，上述向所述远端UE的上层发送第一信息步骤，一方面可以是由远端UE的AS层触发的。Optionally, in the relay UE reselection method in the embodiment of the present application, the foregoing step of sending the first information to the upper layer of the remote UE may be triggered by the AS layer of the remote UE on the one hand.

可选的，在本申请实施例的中继UE的重选方法中，上述向所述远端UE的上层发送第一信息的步骤，另一方面可以是由上述第一中继UE触发的。具体而言，上述向所述远端UE的上层发送第一信息的步骤，可以具体执行为：Optionally, in the relay UE reselection method of the embodiment of the present application, the above step of sending the first information to the upper layer of the remote UE may be triggered by the above first relay UE on the other hand. Specifically, the foregoing step of sending the first information to the upper layer of the remote UE may be specifically executed as follows:

若接收到所述第一中继UE通过副链路RRC消息发送的第二信息，则向所述远端UE的上层发送所述第一信息；其中，所述第二信息为所述第一中继UE在确定副链路RRC重配置流程失败后发送的，所述第二信息用于指示所述第一中继UE满足所述中继重选条件。If the second information sent by the first relay UE through the secondary link RRC message is received, the first information is sent to the upper layer of the remote UE; where the second information is the first The second information is sent by the relay UE after determining that the secondary link RRC reconfiguration procedure fails, and the second information is used to indicate that the first relay UE satisfies the relay reselection condition.

可以理解，上述确定第一中继UE满足中继重选条件的通知可以接收自第一中继UE，具体地，该确定第一中继UE满足中继重选条件的情况可以具体为第一中继UE确定副链路RRC重配置流程失败，此时，远端UE可以通知自己的上层，此时为远端UE提供中继服务的第一中继UE满足中继重选条件。如此，可以使得远端UE的上层在接收到该第一信息时，触发远端UE与第一中继UE间的单播连接释放流程、以及触发远端UE与其他中继UE之间的新的单播连接发现流程和新的单播连接建立流程中的至少一个。It can be understood that the foregoing notification of determining that the first relay UE meets the relay reselection condition may be received from the first relay UE. Specifically, the determination that the first relay UE meets the relay reselection condition may specifically be the first The relay UE determines that the secondary link RRC reconfiguration procedure fails. At this time, the remote UE can notify its upper layer that the first relay UE that provides the relay service for the remote UE meets the relay reselection condition. In this way, when the upper layer of the remote UE receives the first information, it can trigger the unicast connection release procedure between the remote UE and the first relay UE, and trigger the new connection between the remote UE and other relay UEs. At least one of the unicast connection discovery process and the new unicast connection establishment process.

可选的，在本申请实施例的中继UE的重选方法中，在上述确定第一中继UE满足中继重选条件的情况为确定副链路RRC重配置流程失败时，该确定副链路RRC重配置流程失败可以具体表现为：remote UE在一定时间内没有收到任何Sidelink RRC消息(或T400定时器超时)，触发relay重选，如图7所示的场景。也就是说，上述确定副链路RRC重配置流程失败的步骤，可以具体执行为如下内容：Optionally, in the relay UE reselection method of the embodiment of the present application, when the determination that the first relay UE satisfies the relay reselection condition is determined to be the failure of the secondary link RRC reconfiguration process, the determining secondary The failure of the link RRC reconfiguration process can be specifically manifested as: the remote UE does not receive any Sidelink RRC message (or the T400 timer expires) within a certain period of time, triggering a relay reselection, as shown in the scenario shown in FIG. 7. That is to say, the above steps of determining that the secondary link RRC reconfiguration process fails can be specifically executed as follows:

若在第一预设时段内未接收到任一副链路RRC消息，则确定副链路RRC重配置流程失败，其中，所述第一预设时段的起始时刻为所述远端UE向所述第一中继UE发送副链路RRC重配置消息的时刻。If no secondary link RRC message is received within the first preset time period, it is determined that the secondary link RRC reconfiguration procedure has failed, wherein the start time of the first preset time period is the remote UE direction The moment when the first relay UE sends the secondary link RRC reconfiguration message.

进一步可选的，在确定副链路RRC重配置流程失败，触发中继重选流程后，可以向第一中继UE发送其满足中继重选条件的通知，以使该第一中继UE停止为远端UE提供中继服务，即本申请实施例的中继UE的重选方法，还可以包括以下内容：Further optionally, after it is determined that the secondary link RRC reconfiguration process fails and the relay reselection process is triggered, a notification that it satisfies the relay reselection conditions may be sent to the first relay UE, so that the first relay UE Stopping providing relay services for remote UEs, that is, the relay UE reselection method in the embodiment of this application, may also include the following content:

在确定副链路RRC重配置流程失败之后，向所述第一中继UE发送第三信息；其中，所述第三信息用于指示所述第一中继UE满足所述中继重选条件。After determining that the secondary link RRC reconfiguration procedure fails, send third information to the first relay UE; wherein the third information is used to indicate that the first relay UE satisfies the relay reselection condition .

进一步可选的，在本申请实施例的中继UE的重选方法中，上述向所述第一中继UE发送第三信息的步骤，具体可以执行为如下内容：Further optionally, in the relay UE reselection method of the embodiment of the present application, the foregoing step of sending the third information to the first relay UE may be specifically executed as follows:

通过副链路RRC消息或上层消息，向所述第一中继UE发送所述第三信息。其中，该上层消息可以是PC5-S(PC5 Signaling)类型的。The third information is sent to the first relay UE through a secondary link RRC message or an upper layer message. Wherein, the upper layer message may be of PC5-S (PC5 Signaling) type.

需要说明的是，对于通过副链路RRC消息发送第三信息的情况，上述第一中继UE在接收到第三信息后，可以选择进一步通知其上层(接入层AS以上)，此时，其对远端UE的服务满足中继重选条件。进一步使得该第一中继UE的上层触发第一中继UE与远端UE间的单播连接释放流程、以及触发远端UE与其他中继UE之间的新的单播连接发现流程和新的单播连接建立流程中的至少一个。而对于通过上层消息发送第三信息的情况，该第一中继UE的上层触发第一中继UE与远端UE间的单播连接释放流程、以及触发远端UE与其他中继UE之间的新的单播连接发现流程和新的单播连接建立流程中的至少一个，该情况下，无需AS层和上层之间的交互。It should be noted that, in the case of sending the third information through the secondary link RRC message, the first relay UE may choose to further notify its upper layer (above the access layer AS) after receiving the third information. At this time, Its service to the remote UE satisfies the relay reselection condition. Furthermore, the upper layer of the first relay UE triggers the unicast connection release procedure between the first relay UE and the remote UE, and triggers the new unicast connection discovery procedure and new unicast connection discovery procedure between the remote UE and other relay UEs. At least one of the unicast connection establishment procedures. In the case of sending the third information through upper-layer messages, the upper layer of the first relay UE triggers the unicast connection release procedure between the first relay UE and the remote UE, and triggers the remote UE and other relay UEs. At least one of the new unicast connection discovery process and the new unicast connection establishment process. In this case, there is no need for interaction between the AS layer and the upper layer.

可选的，在本申请实施例的中继UE的重选方法中，在上述确定第一中继UE满足中继重选条件的情况为确定副链路SRB完整性保护验证失败时，还可以包括以下内容：Optionally, in the relay UE reselection method in the embodiment of the present application, when it is determined that the first relay UE meets the relay reselection condition, it is determined that the secondary link SRB integrity protection verification fails, it may also Include the following:

向网络设备上报第四信息，所述第四信息用于指示所述副链路SRB完整性保护验证失败和副链路RRC重配置失败中的至少一个。Reporting fourth information to the network device, where the fourth information is used to indicate at least one of failure of verification of integrity protection of the secondary link SRB and failure of secondary link RRC reconfiguration.

其中，上述第四信息可以通过Sidelink UE信息(SidelinkUEInformationNR)信令上报；此时，该远端UE可以是处于RRC连接态的UE。The foregoing fourth information may be reported through Sidelink UE Information (Sidelink UE Information NR) signaling; at this time, the remote UE may be a UE in an RRC connected state.

参见图4所示，本申请实施例提供一种中继终端设备的重选方法，由中继终端设备执行，方法包括以下流程步骤：Referring to FIG. 4, an embodiment of the present application provides a method for reselecting a relay terminal device, which is executed by the relay terminal device, and the method includes the following process steps:

步骤201：在确定满足中继重选条件的情况下，停止为远端UE提供中继服务。Step 201: When it is determined that the relay reselection condition is satisfied, stop providing the relay service for the remote UE.

其中，确定满足中继重选条件包括以下至少之一：确定发送副链路RRC重配置失败消息；确定所述远端UE接收到所述副链路RRC重配置失败消息；接收到所述远端UE发送的所述副链路RRC重配置失败消息；确定副链路RRC重配置流程失败；确定副链路SRB完整性保护验证失败；确定基于Uu接口的DRB和SRB中的至少一个完整性保护验证失败，所述基于Uu接口的DRB和SRB中的至少一个用于中转所述远端UE的数据和/或信令。Wherein, determining that the relay reselection condition is satisfied includes at least one of the following: determining to send a secondary link RRC reconfiguration failure message; determining that the remote UE receives the secondary link RRC reconfiguration failure message; receiving the remote The secondary link RRC reconfiguration failure message sent by the end UE; determining that the secondary link RRC reconfiguration process fails; determining that the secondary link SRB integrity protection verification fails; determining the integrity of at least one of the DRB and SRB based on the Uu interface The protection verification fails, and at least one of the Uu interface-based DRB and SRB is used to transfer data and/or signaling of the remote UE.

在本申请实施例中，中继UE可以在确定其满足中继重选条件的情况下，及时停止继续为远端UE提供中继服务，具体而言，考虑到NR副链路的一些新特性，使得远端UE在副链路RRC连接失败的各种情况下，均能够进行中继重选。如此，可以确保远端UE总是能在一个可靠的中继UE上进行业务传输。In the embodiment of this application, the relay UE can stop providing relay services to the remote UE in time when it is determined that it meets the relay reselection conditions. Specifically, considering some new features of the NR secondary link , So that the remote UE can perform relay reselection in various situations when the secondary link RRC connection fails. In this way, it can be ensured that the remote UE can always perform service transmission on a reliable relay UE.

其中，上述中继UE满足中继重选条件也可以理解为中继UE不满足为远端UE提供中继服务的条件。Wherein, the above-mentioned relay UE meeting the relay reselection condition can also be understood as the relay UE not meeting the condition for providing the relay service for the remote UE.

可以理解，对于中继UE而言，上述副链路RRC连接失败的情况可以包括以下至少之一：(1)在确定已向其当前提供中继服务的远端UE发送副链路RRC重配置失败消息的情况下，可以确定副链路RRC连接失败，如图5所示的场景，该场景下由远端UE发起副链路RRC重配置消息；(2)在确定其当前提供中继服务的远端UE接收到副链路RRC重配置失败消息的情况下，可以确定副链路RRC连接失败，如图5所示的场景，该场景下由远端UE发起副链路RRC重配置消息；(3)在确定接收到其当前提供中继服务的远端UE发送的副链路RRC重配置失败消息的情况下，可以确定副链路RRC连接失败，如图6所示的场景，该场景下由中继UE发起副链路RRC重配置消息；(4)在确定副链路RRC重配置流程失败的情况下，可以确定副链路RRC连接失败；(5)在确定副链路SRB完整性保护验证失败的情况下，可以确定副链路RRC连接失败，如图10所示的场景；(6)在确定基于Uu接口的DRB 和SRB中的至少一个完整性保护验证失败的情况下，可以确定副链路RRC连接失败，如图10所示的场景。It can be understood that, for the relay UE, the above-mentioned secondary link RRC connection failure may include at least one of the following: (1) When it is determined that the remote UE that currently provides the relay service has sent the secondary link RRC reconfiguration In the case of a failure message, it can be determined that the secondary link RRC connection has failed, as shown in the scenario shown in Figure 5, in which the remote UE initiates a secondary link RRC reconfiguration message; (2) When it is determined that it currently provides relay services When the remote UE receives the secondary link RRC reconfiguration failure message, it can be determined that the secondary link RRC connection fails, as shown in the scenario shown in Figure 5, in which the remote UE initiates the secondary link RRC reconfiguration message (3) When it is determined that the secondary link RRC reconfiguration failure message sent by the remote UE that currently provides the relay service is received, it can be determined that the secondary link RRC connection fails, as shown in the scenario shown in Figure 6, this In the scenario, the relay UE initiates the secondary link RRC reconfiguration message; (4) In the case of determining that the secondary link RRC reconfiguration process fails, it can be determined that the secondary link RRC connection fails; (5) When determining the secondary link SRB When integrity protection verification fails, it can be determined that the secondary link RRC connection fails, as shown in the scenario shown in Figure 10; (6) When it is determined that at least one of the Uu interface-based DRB and SRB integrity protection verification fails , It can be determined that the secondary link RRC connection fails, as shown in the scenario shown in Figure 10.

向所述中继UE的上层发送第五信息；其中，所述第五信息用于指示所述中继UE满足所述中继重选条件。Send fifth information to the upper layer of the relay UE; where the fifth information is used to indicate that the relay UE satisfies the relay reselection condition.

可以理解，当中继UE停止为远端UE提供中继服务后，可以通知自己的上层，此时该中继UE满足中继重选条件。如此，可以使得该终端UE的上层在接收到该第五信息时，触发第一中继UE与远端UE间的单播连接释放流程、以及触发远端UE与其他中继UE之间的新的单播连接发现流程和新的单播连接建立流程中的至少一个。其中，中继UE的上层可以指接入层AS以上。It can be understood that after the relay UE stops providing the relay service for the remote UE, it can notify its own upper layer, and the relay UE meets the relay reselection condition at this time. In this way, when the upper layer of the terminal UE receives the fifth information, it can trigger the unicast connection release procedure between the first relay UE and the remote UE, and trigger the new connection between the remote UE and other relay UEs. At least one of the unicast connection discovery process and the new unicast connection establishment process. Among them, the upper layer of the relay UE may be above the access layer AS.

可选的，在本申请实施例的中继UE的重选方法中，上述向所述中继UE的上层发送第五信息步骤，一方面可以是由中继UE的AS层触发的。Optionally, in the relay UE reselection method in the embodiment of the present application, the above-mentioned fifth information step of sending to the upper layer of the relay UE may be triggered by the AS layer of the relay UE on the one hand.

可选的，在本申请实施例的中继UE的重选方法中，上述向所述中继UE的上层发送第五信息的步骤，另一方面可以是由上述远端UE触发的。具体而言，上述向所述中继UE的上层发送第五信息的步骤，可以具体执行为：Optionally, in the relay UE reselection method in the embodiment of the present application, the above step of sending the fifth information to the upper layer of the relay UE may be triggered by the above remote UE on the other hand. Specifically, the foregoing step of sending the fifth information to the upper layer of the relay UE may be specifically executed as follows:

若接收到所述远端UE通过副链路RRC消息发送的第六信息，则向所述中继UE的上层发送所述第五信息；其中，所述第六信息为所述远端UE在确定副链路RRC重配置流程失败后发送的，所述第六信息用于指示所述中继UE满足所述中继重选条件。If the sixth information sent by the remote UE through the secondary link RRC message is received, the fifth information is sent to the upper layer of the relay UE; wherein, the sixth information is that the remote UE is After determining that the secondary link RRC reconfiguration procedure fails, the sixth information is used to indicate that the relay UE meets the relay reselection condition.

可以理解，上述确定满足中继重选条件的通知可以接收自中继UE所服务的远端UE，具体地，该确定满足中继重选条件的情况可以具体为远端UE确定副链路RRC重配置流程失败，此时，中继UE可以通知自己的上层，此时该中继UE满足中继重选条件。如此，可以使得该中继UE的上层在接收到该第五信息时，触发该中继UE与远端UE间的单播连接释放流程、以及触发远端UE与其他中继UE之间的新的单播连接发现流程和新的单播连接建立流程中的至少一个。It can be understood that the foregoing notification for determining that the relay reselection condition is satisfied may be received from the remote UE served by the relay UE. Specifically, the determination that the relay reselection condition is satisfied may be specifically for the remote UE to determine the secondary link RRC The reconfiguration process fails. At this time, the relay UE can notify its upper layer, and at this time, the relay UE meets the relay reselection condition. In this way, when the upper layer of the relay UE receives the fifth information, it can trigger the unicast connection release procedure between the relay UE and the remote UE, and trigger the new connection between the remote UE and other relay UEs. At least one of the unicast connection discovery process and the new unicast connection establishment process.

可选的，在本申请实施例的中继UE的重选方法中，在上述确定满足中继重选条件的情况为确定副链路RRC重配置流程失败时，该确定副链路RRC重配置流程失败可以具体表现为：relay UE在一定时间内没有收到任何Sidelink RRC消息(或T400定时器超时)，终止对远端UE提供中继服务，如图8所示的场景。也就是说，上述确定副链路RRC重配置流程失败的步骤，可以具体执行为如下内容：Optionally, in the relay UE reselection method in the embodiment of the present application, when the above determination that the relay reselection condition is met is the determination that the secondary link RRC reconfiguration process fails, the determination of the secondary link RRC reconfiguration The process failure can be specifically manifested as: the relay UE does not receive any Sidelink RRC message within a certain period of time (or the T400 timer expires), and the relay service to the remote UE is terminated, as shown in the scenario in Figure 8. That is to say, the above steps of determining that the secondary link RRC reconfiguration process fails can be specifically executed as follows:

若在第二预设时段内未接收到任一副链路RRC消息，则确定副链路对应的RRC重配置流程失败，其中，所述第二预设时段的起始时刻为所述中继UE向所述远端UE发送副链路RRC重配置消息的时刻。If no secondary link RRC message is received within the second preset time period, it is determined that the RRC reconfiguration procedure corresponding to the secondary link fails, wherein the start time of the second preset time period is the relay The time when the UE sends a secondary link RRC reconfiguration message to the remote UE.

进一步可选的，在确定副链路RRC重配置流程失败，停止为远端UE提供中继服务后，可以向远端UE发送该中继UE满足中继重选条件的通知，以使该远端UE触发中继重选流程，即本申请实施例的中继UE的重选方法，还可以包括以下内容：Further optionally, after it is determined that the secondary link RRC reconfiguration process fails and the relay service for the remote UE is stopped, a notification that the relay UE satisfies the relay reselection condition may be sent to the remote UE, so that the remote UE The terminal UE triggers the relay reselection process, that is, the relay UE reselection method of the embodiment of the present application, and may also include the following content:

在确定副链路RRC重配置流程失败之后，向所述远端UE发送第七信息；其中，所述第七信息用于指示所述中继UE满足所述中继重选条件。After determining that the secondary link RRC reconfiguration procedure fails, the seventh information is sent to the remote UE; where the seventh information is used to indicate that the relay UE satisfies the relay reselection condition.

进一步可选的，在本申请实施例的中继UE的重选方法中，上述向所述远端UE发送第七信息的步骤，具体可以执行为如下内容：Further optionally, in the relay UE reselection method of the embodiment of the present application, the foregoing step of sending the seventh information to the remote UE may be specifically executed as follows:

通过副链路RRC消息或上层消息，向所述远端UE发送所述第七信息。其中，该上层消息可以是PC5-S(PC5 Signaling)类型的。The seventh information is sent to the remote UE through a secondary link RRC message or an upper layer message. Wherein, the upper layer message may be of PC5-S (PC5 Signaling) type.

需要说明的是，对于通过副链路RRC消息发送第七信息的情况，上述远端UE在接收到第七信息后，可以选择进一步通知其上层(接入层AS以上)，此时，为远端UE提供中继服务的中继UE满足中继重选条件。进一步使得该远端UE的上层触发远端UE与当期为其提供中继服务的中继UE间的单播连接释放流程、以及触发远端UE与其他中继UE之间的新的单播连接发现流程和新的单播连接建立流程中的至少一个。而对于通过上层消息发送第七信息的情况，该远端UE的上层触发远端UE与当期为其提供中继服务的中继UE间的单播连接释放流程、以及触发远端UE与其他中继UE之间的新的单播连接发现流程和新的单播连接建立流程中的至少一个，该情况下，无需AS层和上层之间的交互。It should be noted that, in the case of sending the seventh information through the secondary link RRC message, after the above-mentioned remote UE receives the seventh information, it can choose to further notify its upper layer (above the access layer AS). In this case, it is remote The relay UE providing the relay service at the end UE meets the relay reselection condition. Furthermore, the upper layer of the remote UE triggers the unicast connection release procedure between the remote UE and the relay UE that provides the relay service for it in the current period, and triggers the new unicast connection between the remote UE and other relay UEs. At least one of the discovery process and the new unicast connection establishment process. In the case of sending the seventh information through the upper layer message, the upper layer of the remote UE triggers the unicast connection release process between the remote UE and the relay UE that provides the relay service for it in the current period, and triggers the remote UE to communicate with other media. Following at least one of the new unicast connection discovery process and the new unicast connection establishment process between the UEs, in this case, there is no need for interaction between the AS layer and the upper layer.

可选的，在本申请实施例的中继UE的重选方法中，在上述确定满足中继重选条件的情况为确定副链路SRB完整性保护验证失败时，还可以包括以下内容：Optionally, in the relay UE reselection method of the embodiment of the present application, when it is determined that the secondary link SRB integrity protection verification fails when the foregoing determination that the relay reselection condition is satisfied is determined, the following content may also be included:

向网络设备上报第八信息，所述第八信息用于指示所述副链路SRB完整性保护验证失败和副链路RRC重配置失败中的至少一个。Report eighth information to the network device, where the eighth information is used to indicate at least one of a failure of verification of the integrity protection of the secondary link SRB and a failure of the secondary link RRC reconfiguration.

其中，上述第八信息可以通过Sidelink UE信息(SidelinkUEInformationNR)信令上报；此时，该中继UE可以是处于RRC连接态的UE。The above-mentioned eighth information may be reported through Sidelink UE Information (Sidelink UE Information NR) signaling; at this time, the relay UE may be a UE in an RRC connected state.

可选的，在本申请实施例的中继UE的重选方法中，在上述确定满足中继重选条件的情况为确定基于Uu接口的DRB和SRB中的至少一个完整性保护验证失败时，还可以包括以下内容：Optionally, in the relay UE reselection method of the embodiment of the present application, when it is determined that at least one of the integrity protection verification of the Uu interface-based DRB and SRB fails when the above determination that the relay reselection condition is met is determined, It can also include the following:

向网络设备上报第九信息，所述第九信息用于指示所述基于Uu接口的DRB和SRB中的至少一个完整性保护验证失败。Reporting ninth information to the network device, where the ninth information is used to indicate that at least one of the Uu interface-based DRB and SRB integrity protection verification fails.

其中，该第九信息可以通过Sidelink UE信息(SidelinkUEInformationNR)信令上报；此时，该中继UE可以是处于RRC连接态的UE。The ninth information may be reported through Sidelink UE Information (Sidelink UE Information NR) signaling; at this time, the relay UE may be a UE in an RRC connected state.

参见图11所示，本申请实施例提供一种远端终端设备300，该远端终端设备300包括：Referring to FIG. 11, an embodiment of the present application provides a remote terminal device 300, and the remote terminal device 300 includes:

处理模块301，用于在确定第一中继UE满足中继重选条件的情况下，触发中继重选流程，所述第一中继UE是当前为所述远端UE提供中继服务的UE；其中，所述确定第一中继UE满足中继重选条件包括以下至少之一：确定发送副链路RRC重配置失败消息；确定所述第一中继UE接收到所述副链路RRC重配置失败消息；接收到所述第一中继UE发送的副链路RRC重配置失败消息；确定副链路RRC重配置流程失败；确定副链路SRB完整性保护验证失败。The processing module 301 is configured to trigger a relay reselection process when it is determined that the first relay UE satisfies the relay reselection condition, and the first relay UE is currently providing a relay service for the remote UE UE; wherein the determining that the first relay UE satisfies the relay reselection condition includes at least one of the following: determining to send a secondary link RRC reconfiguration failure message; determining that the first relay UE receives the secondary link RRC reconfiguration failure message; receiving the secondary link RRC reconfiguration failure message sent by the first relay UE; determining that the secondary link RRC reconfiguration process fails; determining that the secondary link SRB integrity protection verification fails.

可选的，本申请实施例的远端终端设备300，还可以包括：Optionally, the remote terminal device 300 of the embodiment of the present application may further include:

第一发送模块，用于向所述远端UE的上层发送第一信息；其中，所述第一信息用于指示所述第一中继UE满足所述中继重选条件。The first sending module is configured to send first information to an upper layer of the remote UE; wherein, the first information is used to indicate that the first relay UE meets the relay reselection condition.

可选的，在本申请实施例的远端终端设备300中，上述第一发送模块，具体可以用于：Optionally, in the remote terminal device 300 of the embodiment of the present application, the above-mentioned first sending module may be specifically used for:

可选的，在本申请实施例的远端终端设备300中，上述处理模块301，具体可以用于：Optionally, in the remote terminal device 300 of the embodiment of the present application, the above-mentioned processing module 301 may be specifically used for:

第二发送模块，用于在确定副链路RRC重配置流程失败之后，向所述第一中继UE发送第三信息；其中，所述第三信息用于指示所述第一中继UE满足所述中继重选条件。The second sending module is configured to send third information to the first relay UE after determining that the secondary link RRC reconfiguration process fails; wherein the third information is used to indicate that the first relay UE meets The relay reselection condition.

可选的，在本申请实施例的远端终端设备300中，上述第二发送模块，具体可以用于：Optionally, in the remote terminal device 300 of the embodiment of the present application, the above-mentioned second sending module may be specifically used for:

通过副链路RRC消息或上层消息，向所述第一中继UE发送所述第三信息。The third information is sent to the first relay UE through a secondary link RRC message or an upper layer message.

上报模块，用于向网络设备上报第四信息，所述第四信息用于指示所述副链路SRB完整性保护验证失败和副链路RRC重配置失败中的至少一个。The reporting module is configured to report fourth information to the network device, where the fourth information is used to indicate at least one of the verification failure of the integrity protection of the secondary link SRB and the failure of the secondary link RRC reconfiguration.

能够理解，本申请实施例提供的远端终端设备300，能够实现前述由远端终端设备300执行的中继终端设备的重选方法，关于中继终端设备的重选方法的相关阐述均适用于远端终端设备300，此处不再赘述。It can be understood that the remote terminal device 300 provided by the embodiment of the present application can implement the foregoing relay terminal device reselection method executed by the remote terminal device 300, and the relevant explanations about the relay terminal device reselection method are applicable to The remote terminal device 300 will not be repeated here.

参见图12所示，本申请实施例提供一种中继终端设备400，该中继终端设备400包括：Referring to FIG. 12, an embodiment of the present application provides a relay terminal device 400, and the relay terminal device 400 includes:

处理模块401，用于在确定满足中继重选条件的情况下，停止为远端UE提供中继服务；其中，所述确定满足中继重选条件包括以下至少之一：确定发送副链路RRC重配置失败消息；确定所述远端UE接收到所述副链路RRC重配置失败消息；接收到所述远端UE发送的所述副链路RRC重配置失败消息；确定副链路RRC重配置流程失败；确定副链路SRB完整性保护验证失败；确定基于Uu接口的DRB和SRB中的至少一个完整性保护验证失败，所述基于Uu接口的DRB和SRB中的至少一个用于中转所述远端UE的数据和/或信令。The processing module 401 is configured to stop providing a relay service for the remote UE when it is determined that the relay reselection condition is satisfied; wherein the determining that the relay reselection condition is satisfied includes at least one of the following: determining the sending secondary link RRC reconfiguration failure message; determining that the remote UE receives the secondary link RRC reconfiguration failure message; receiving the secondary link RRC reconfiguration failure message sent by the remote UE; determining the secondary link RRC The reconfiguration process fails; it is determined that the secondary link SRB integrity protection verification fails; it is determined that at least one of the Uu interface-based DRB and SRB integrity protection verification fails, and at least one of the Uu interface-based DRB and SRB is used for transit Data and/or signaling of the remote UE.

可选的，本申请实施例的中继终端设备400，还可以包括：Optionally, the relay terminal device 400 of the embodiment of the present application may further include:

第一发送模块，用于向所述中继UE的上层发送第五信息；其中，所述第五信息用于指示所述中继UE满足所述中继重选条件。The first sending module is configured to send fifth information to an upper layer of the relay UE; wherein the fifth information is used to indicate that the relay UE meets the relay reselection condition.

可选的，在本申请实施例的中继终端设备400中，上述第一发送模块，具体可以用于：Optionally, in the relay terminal device 400 of the embodiment of the present application, the above-mentioned first sending module may be specifically used for:

可选的，在本申请实施例的中继终端设备400中，上述处理模块401，具体可以用于：Optionally, in the relay terminal device 400 of the embodiment of the present application, the above-mentioned processing module 401 may be specifically used for:

第二发送模块，用于在确定副链路RRC重配置流程失败之后，向所述远端UE发送第七信息；其中，所述第七信息用于指示所述中继UE满足所述中继重选条件。The second sending module is configured to send seventh information to the remote UE after determining that the secondary link RRC reconfiguration process fails; wherein the seventh information is used to indicate that the relay UE meets the requirements of the relay Re-selection conditions.

可选的，在本申请实施例的中继终端设备400中，上述第二发送模块，具体可以用于：Optionally, in the relay terminal device 400 of the embodiment of the present application, the above-mentioned second sending module may be specifically used for:

通过副链路RRC消息或上层消息，向所述远端UE发送所述第七信息。The seventh information is sent to the remote UE through a secondary link RRC message or an upper layer message.

第一上报模块，用于向网络设备上报第八信息，所述第八信息用于指示所述副链路SRB完整性保护验证失败和副链路RRC重配置失败中的至少一个。The first reporting module is configured to report eighth information to the network device, where the eighth information is used to indicate at least one of a failure of verification of the integrity protection of the secondary link SRB and a failure of the secondary link RRC reconfiguration.

第二上报模块，用于向网络设备上报第九信息，所述第九信息用于指示所述基于Uu接口的DRB和SRB中的至少一个完整性保护验证失败。The second reporting module is configured to report ninth information to the network device, where the ninth information is used to indicate that at least one of the Uu interface-based DRB and SRB integrity protection verification fails.

能够理解，本申请实施例提供的中继终端设备400，能够实现前述由中继终端设备400执行的中继终端设备的重选方法，关于中继终端设备的重选方法的相关阐述均适用于中继终端设备400，此处不再赘述。It can be understood that the relay terminal device 400 provided by the embodiment of the present application can implement the aforementioned relay terminal device reselection method performed by the relay terminal device 400, and the relevant explanations about the relay terminal device reselection method are applicable to The relay terminal device 400 will not be repeated here.

在本申请实施例中，中继UE可以在确定其满足中继重选条件的情况下，及时停止继续为远端UE提供中继服务，具体而言，考虑到NR副链路的一些新特性，使得远端UE在副链路RRC连接失败的各种情况下，均能够进行中继重选。如此，可以确保远端UE总是能在一个可靠的中继UE上进行业务传输。In the embodiments of this application, the relay UE can stop providing relay services to the remote UE in time when it is determined that it meets the relay reselection conditions. Specifically, considering some new features of the NR secondary link , So that the remote UE can perform relay reselection in various situations when the secondary link RRC connection fails. In this way, it can be ensured that the remote UE can always perform service transmission on a reliable relay UE.

图13是本申请另一个实施例的终端设备的框图。图13所示的终端设备500包括：至少一个处理器501、存储器502、至少一个网络接口504和用户接口503。终端设备500中的各个组件通过总线***505耦合在一起。可理解，总线***505用于实现这些组件之间的连接通信。总线***505除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图13中将各种总线都标为总线***505。FIG. 13 is a block diagram of a terminal device according to another embodiment of the present application. The terminal device 500 shown in FIG. 13 includes: at least one processor 501, a memory 502, at least one network interface 504, and a user interface 503. The various components in the terminal device 500 are coupled together through the bus system 505. It can be understood that the bus system 505 is used to implement connection and communication between these components. In addition to the data bus, the bus system 505 also includes a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are marked as the bus system 505 in FIG. 13.

其中，用户接口503可以包括显示器、键盘或者点击设备(例如，鼠标，轨迹球(trackball)、触感板或者触摸屏等。Wherein, the user interface 503 may include a display, a keyboard, or a pointing device (for example, a mouse, a trackball (trackball), a touch panel, or a touch screen, etc.).

可以理解，本申请实施例中的存储器502可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。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。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DRRAM)。本申请实施例描述的***和方法的存储器502旨在包括但不限于这些和任意其它适合类型的存储器。It can be understood that the memory 502 in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (Double Data Rate SDRAM, DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), Synchronous Link Dynamic Random Access Memory (Synchlink DRAM, SLDRAM) And Direct Rambus RAM (DRRAM). The memory 502 of the system and method described in the embodiments of the present application is intended to include, but is not limited to, these and any other suitable types of memory.

在一些实施方式中，存储器502存储了如下的元素，可执行模块或者数据结构，或者他们的子集，或者他们的扩展集：操作***5021和应用程序5022。In some embodiments, the memory 502 stores the following elements, executable modules or data structures, or their subsets, or their extended sets: operating system 5021 and application programs 5022.

其中，操作***5021，包含各种***程序，例如框架层、核心库层、驱动层等，用于实现各种基础业务以及处理基于硬件的任务。应用程序5022，包含各种应用程序，例如媒体播放器(Media Player)、浏览器(Browser)等，用于实现各种应用业务。实现本申请实施例方法的程序可以包含在应用程序5022中。Among them, the operating system 5021 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks. The application program 5022 includes various application programs, such as a media player (Media Player), a browser (Browser), etc., which are used to implement various application services. The program for implementing the method of the embodiment of the present application may be included in the application program 5022.

在本申请实施例中，终端设备500还包括：存储在存储器上502并可在处理器501上运行的程序或指令。In the embodiment of the present application, the terminal device 500 further includes: a program or instruction that is stored in the memory 502 and can be run on the processor 501.

其中，该程序或指令被处理器501执行时可以实现如下步骤：Wherein, when the program or instruction is executed by the processor 501, the following steps can be implemented:

在确定第一中继UE满足中继重选条件的情况下，触发中继重选流程，所述第一中继UE是当前为所述远端UE提供中继服务的UE；其中，所述确定第一中继UE满足中继重选条件包括以下至少之一：确定发送副链路RRC重配置失败消息；确定所述第一中继UE接收到所述副链路RRC重配置失败消息；接收到所述第一中继UE发送的副链路RRC重配置失败消息；确定副链路RRC重配置流程失败；确定副链路SRB完整性保护验证失败。When it is determined that the first relay UE satisfies the relay reselection condition, the relay reselection procedure is triggered, and the first relay UE is the UE currently providing relay service for the remote UE; wherein, the Determining that the first relay UE satisfies the relay reselection condition includes at least one of the following: determining to send a secondary link RRC reconfiguration failure message; determining that the first relay UE receives the secondary link RRC reconfiguration failure message; Receive the secondary link RRC reconfiguration failure message sent by the first relay UE; determine that the secondary link RRC reconfiguration process fails; determine that the secondary link SRB integrity protection verification fails.

其中，该程序或指令被处理器501执行时还可以实现如下步骤：Wherein, when the program or instruction is executed by the processor 501, the following steps may also be implemented:

上述本申请实施例揭示的方法可以应用于处理器501中，或者由处理器501实现。处理器501可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器501中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器501可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)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该处理器也可以是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译码处理器执行完成，或者用译码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计算机可读存储介质中。该计算机可读存储介质位于存储器502，处理器501读取存储器502中的信息，结合其硬件完成上述方法的步骤。具体地，该计算机可读存储介质上存储有计算机程序，计算机程序被处理器501执行时实现如上述中继终端设备的重选方法实施例的各步骤。The method disclosed in the foregoing embodiment of the present application may be applied to the processor 501 or implemented by the processor 501. The processor 501 may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method can be completed by an integrated logic circuit of hardware in the processor 501 or instructions in the form of software. The aforementioned processor 501 may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be 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 decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module may be located in a computer-readable storage medium that is mature in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The computer-readable storage medium is located in the memory 502, and the processor 501 reads the information in the memory 502, and completes the steps of the foregoing method in combination with its hardware. Specifically, a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor 501, each step of the above-mentioned relay terminal device reselection method embodiment is implemented.

可以理解的是，本申请实施例描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现，处理单元可以实现在一个或多个专用集成电路(Application Specific Integrated Circuits，ASIC)、数字信号处理器(Digital Signal Processing，DSP)、数字信号处理设备(DSP Device，DSPD)、可编程逻辑设备(Programmable Logic Device，PLD)、现场可编程门阵列(Field-Programmable Gate Array，FPGA)、通用处理器、控制器、微控制器、微处理器、用于执行本申请所述功能的其它电子单元或其组合中。It can be understood that the embodiments described in the embodiments of the present application may be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application specific integrated circuits (ASIC), digital signal processor (Digital Signal Processing, DSP), digital signal processing equipment (DSP Device, DSPD), programmable Logic devices (Programmable Logic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, and others for performing the functions described in this application Electronic unit or its combination.

对于软件实现，可通过执行本申请实施例所述功能的模块(例如过程、函数等)来实现本申请实施例所述的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。For software implementation, the technology described in the embodiments of the present application can be implemented by modules (for example, procedures, functions, etc.) that execute the functions described in the embodiments of the present application. The software codes can be stored in the memory and executed by the processor. The memory can be implemented in the processor or external to the processor.

终端设备500能够实现前述实施例中远端终端设备或中继终端设备实现的各个过程，为避免重复，这里不再赘述。The terminal device 500 can implement the various processes implemented by the remote terminal device or the relay terminal device in the foregoing embodiment, and in order to avoid repetition, details are not described herein again.

优选的，本申请实施例还提供一种终端设备，包括处理器，存储器，存储在存储器上并可在所述处理器上运行的程序或指令，该程序或指令被处理器执行时实现上述任一中继终端设备的重选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。Preferably, the embodiment of the present application further provides a terminal device, including a processor, a memory, and a program or instruction that is stored in the memory and can run on the processor. When the program or instruction is executed by the processor, any of the foregoing is implemented. Each process of the embodiment of the reselection method for a relay terminal device can achieve the same technical effect. To avoid repetition, details are not repeated here.

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程序或指令，该程序或指令被处理器执行时实现上述任一中继终端设备的重选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 embodiments of the present application also provide a readable storage medium, and the readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, each of the foregoing embodiments of the method for reselecting a relay terminal device is implemented. The process, and can achieve the same technical effect, in order to avoid repetition, I will not repeat it here.

其中，所述处理器为上述实施例中所述的终端设备中的处理器。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 device 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), random access memory (Random Access Memory, RAM), magnetic disk, or optical disk.

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 in this article, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, It also includes other elements that are not explicitly listed, or elements inherent to the process, method, article, or device. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article, or device that includes the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. The functions are performed, for example, the described method may be performed in a different order from the described order, and various steps may also be added, omitted, or combined. In addition, features described with reference to certain 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。Through the description of the above implementation manners, those skilled in the art can clearly understand that the above-mentioned embodiment method can be implemented by means of software plus the necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is better.的实施方式。 Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes 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 the present 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 application are described above with reference to the accompanying drawings, but the application is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art are Under the enlightenment of this application, many forms can be made without departing from the purpose of this application and the scope of protection of the claims, all of which fall within the protection of this application.

Claims

一种中继终端设备的重选方法，应用于远端终端设备，所述方法包括：A method for reselecting a relay terminal device is applied to a remote terminal device, and the method includes:

在确定第一中继终端设备UE满足中继重选条件的情况下，触发中继重选流程，所述第一中继UE是当前为所述远端UE提供中继服务的UE；Triggering a relay reselection procedure in a case where it is determined that the first relay terminal equipment UE meets the relay reselection condition, and the first relay UE is the UE that currently provides the relay service for the remote UE;

其中，所述确定第一中继终端设备UE满足中继重选条件包括以下至少之一：Wherein, the determining that the first relay terminal equipment UE satisfies the relay reselection condition includes at least one of the following:

确定发送副链路无线资源控制RRC重配置失败消息；Determine to send a secondary link radio resource control RRC reconfiguration failure message;

确定所述第一中继UE接收到所述副链路RRC重配置失败消息；Determining that the first relay UE receives the secondary link RRC reconfiguration failure message;

接收到所述第一中继UE发送的副链路RRC重配置失败消息；Receiving a secondary link RRC reconfiguration failure message sent by the first relay UE;

确定副链路RRC重配置流程失败；Determine that the secondary link RRC reconfiguration process failed;

确定副链路信令无线承载SRB完整性保护验证失败。It is determined that the secondary link signaling radio bearer SRB integrity protection verification fails.
根据权利要求1所述的方法，其中，所述方法还包括：The method according to claim 1, wherein the method further comprises:

向所述远端UE的上层发送第一信息；Sending the first information to the upper layer of the remote UE;

其中，所述第一信息用于指示所述第一中继UE满足所述中继重选条件。The first information is used to indicate that the first relay UE satisfies the relay reselection condition.
根据权利要求2所述的方法，其中，所述向所述远端UE的上层发送第一信息，包括：The method according to claim 2, wherein the sending the first information to the upper layer of the remote UE comprises:

若接收到所述第一中继UE通过副链路RRC消息发送的第二信息，则向所述远端UE的上层发送所述第一信息；If the second information sent by the first relay UE through the secondary link RRC message is received, sending the first information to the upper layer of the remote UE;

其中，所述第二信息为所述第一中继UE在确定副链路RRC重配置流程失败后发送的，所述第二信息用于指示所述第一中继UE满足所述中继重选条件。The second information is sent by the first relay UE after determining that the secondary link RRC reconfiguration procedure fails, and the second information is used to indicate that the first relay UE meets the requirements of the relay reconfiguration process. Selection conditions.
根据权利要求1所述的方法，其中，所述确定副链路RRC重配置流程失败，包括：The method according to claim 1, wherein the determining that the secondary link RRC reconfiguration procedure fails includes:

若在第一预设时段内未接收到任一副链路RRC消息，则确定副链路RRC重配置流程失败，其中，所述第一预设时段的起始时刻为所述远端UE向所述第一中继UE发送副链路RRC重配置消息的时刻。If no secondary link RRC message is received within the first preset time period, it is determined that the secondary link RRC reconfiguration procedure has failed, wherein the start time of the first preset time period is the remote UE direction The moment when the first relay UE sends the secondary link RRC reconfiguration message.
根据权利要求4所述的方法，其中，所述方法还包括：The method according to claim 4, wherein the method further comprises:

在确定副链路RRC重配置流程失败之后，向所述第一中继UE发送第三信息；其中，所述第三信息用于指示所述第一中继UE满足所述中继重选条件。After determining that the secondary link RRC reconfiguration procedure fails, send third information to the first relay UE; wherein the third information is used to indicate that the first relay UE satisfies the relay reselection condition .
根据权利要求5所述的方法，其中，所述向所述第一中继UE发送第三信息，包括：The method according to claim 5, wherein the sending third information to the first relay UE comprises:

通过副链路RRC消息或上层消息，向所述第一中继UE发送所述第三信息。The third information is sent to the first relay UE through a secondary link RRC message or an upper layer message.
根据权利要求1所述的方法，其中，所述方法还包括：The method according to claim 1, wherein the method further comprises:

向网络设备上报第四信息，所述第四信息用于指示所述副链路SRB完整性保护验证失败和副链路RRC重配置失败中的至少一个。Reporting fourth information to the network device, where the fourth information is used to indicate at least one of failure of verification of integrity protection of the secondary link SRB and failure of secondary link RRC reconfiguration.
一种中继终端设备的重选方法，应用于中继终端设备，所述方法包括：A method for reselecting a relay terminal device, which is applied to a relay terminal device, and the method includes:

在确定满足中继重选条件的情况下，停止为远端UE提供中继服务；其中，所述确定满足中继重选条件包括以下至少之一：When it is determined that the relay reselection condition is satisfied, stop providing the relay service for the remote UE; wherein the determining that the relay reselection condition is satisfied includes at least one of the following:

确定发送副链路无线资源控制RRC重配置失败消息；Determine to send a secondary link radio resource control RRC reconfiguration failure message;

确定所述远端UE接收到所述副链路RRC重配置失败消息；Determining that the remote UE receives the secondary link RRC reconfiguration failure message;

接收到所述远端UE发送的所述副链路RRC重配置失败消息；Receiving the secondary link RRC reconfiguration failure message sent by the remote UE;

确定副链路RRC重配置流程失败；Determine that the secondary link RRC reconfiguration process failed;

确定副链路信令无线承载SRB完整性保护验证失败；Determine that the secondary link signaling radio bearer SRB integrity protection verification fails;

确定基于Uu接口的数据无线承载DRB和SRB中的至少一个完整性保护验证失败，所述基于Uu接口的DRB和SRB中的至少一个用于中转所述远端UE的数据和/或信令。It is determined that the integrity protection verification of at least one of the Uu interface-based data radio bearer DRB and SRB fails, and the at least one of the Uu interface-based DRB and SRB is used to transfer data and/or signaling of the remote UE.
根据权利要求8所述的方法，其中，所述方法还包括：The method according to claim 8, wherein the method further comprises:

向所述中继UE的上层发送第五信息；Sending fifth information to the upper layer of the relay UE;

其中，所述第五信息用于指示所述中继UE满足所述中继重选条件。Wherein, the fifth information is used to indicate that the relay UE satisfies the relay reselection condition.
根据权利要求9所述的方法，其中，所述向所述中继UE的上层发送第五信息，包括：The method according to claim 9, wherein the sending the fifth information to the upper layer of the relay UE comprises:

若接收到所述远端UE通过副链路RRC消息发送的第六信息，则向所述中继UE的上层发送所述第五信息；If the sixth information sent by the remote UE through the secondary link RRC message is received, sending the fifth information to the upper layer of the relay UE;

其中，所述第六信息为所述远端UE在确定副链路RRC重配置流程失败后发送的，所述第六信息用于指示所述中继UE满足所述中继重选条件。The sixth information is sent by the remote UE after determining that the secondary link RRC reconfiguration procedure fails, and the sixth information is used to indicate that the relay UE meets the relay reselection condition.
根据权利要求8所述的方法，其中，所述确定副链路RRC重配置流程失败，包括：The method according to claim 8, wherein the determining that the secondary link RRC reconfiguration procedure fails includes:

若在第二预设时段内未接收到任一副链路RRC消息，则确定副链路对应的RRC重配置流程失败，其中，所述第二预设时段的起始时刻为所述中继UE向所述远端UE发送副链路RRC重配置消息的时刻。If no secondary link RRC message is received within the second preset time period, it is determined that the RRC reconfiguration procedure corresponding to the secondary link fails, wherein the start time of the second preset time period is the relay The time when the UE sends a secondary link RRC reconfiguration message to the remote UE.
根据权利要求11所述的方法，其中，所述方法还包括：The method according to claim 11, wherein the method further comprises:

在确定副链路RRC重配置流程失败之后，向所述远端UE发送第七信息；其中，所述第七信息用于指示所述中继UE满足所述中继重选条件。After determining that the secondary link RRC reconfiguration procedure fails, the seventh information is sent to the remote UE; where the seventh information is used to indicate that the relay UE satisfies the relay reselection condition.
根据权利要求12所述的方法，其中，所述向所述远端UE发送第七信息，包括：The method according to claim 12, wherein the sending the seventh information to the remote UE comprises:

通过副链路RRC消息或上层消息，向所述远端UE发送所述第七信息。The seventh information is sent to the remote UE through a secondary link RRC message or an upper layer message.
根据权利要求8所述的方法，其中，所述方法还包括：The method according to claim 8, wherein the method further comprises:

向网络设备上报第八信息，所述第八信息用于指示所述副链路SRB完整性保护验证失败和副链路RRC重配置失败中的至少一个。Report eighth information to the network device, where the eighth information is used to indicate at least one of a failure of verification of the integrity protection of the secondary link SRB and a failure of the secondary link RRC reconfiguration.
根据权利要求8所述的方法，其中，所述方法还包括：The method according to claim 8, wherein the method further comprises:

向网络设备上报第九信息，所述第九信息用于指示所述基于Uu接口的DRB和SRB中的至少一个完整性保护验证失败。Reporting ninth information to the network device, where the ninth information is used to indicate that at least one of the Uu interface-based DRB and SRB integrity protection verification fails.
一种远端终端设备，包括：A remote terminal equipment, including:

处理模块，用于在确定第一中继终端设备UE满足中继重选条件的情况下，触发中继重选流程，所述第一中继UE是当前为所述远端UE提供中继服务的UE；The processing module is configured to trigger a relay reselection process when it is determined that the first relay terminal equipment UE satisfies the relay reselection condition, and the first relay UE is currently providing a relay service for the remote UE UE;

其中，所述确定第一中继终端设备UE满足中继重选条件包括以下至少之一：Wherein, the determining that the first relay terminal equipment UE satisfies the relay reselection condition includes at least one of the following:

确定发送副链路无线资源控制RRC重配置失败消息；Determine to send a secondary link radio resource control RRC reconfiguration failure message;

确定所述第一中继UE接收到所述副链路RRC重配置失败消息；Determining that the first relay UE receives the secondary link RRC reconfiguration failure message;

接收到所述第一中继UE发送的副链路RRC重配置失败消息；Receiving a secondary link RRC reconfiguration failure message sent by the first relay UE;

确定副链路RRC重配置流程失败；Determine that the secondary link RRC reconfiguration process failed;

确定副链路信令无线承载SRB完整性保护验证失败。It is determined that the secondary link signaling radio bearer SRB integrity protection verification fails.
根据权利要求16所述的远端终端设备，其中，还包括：The remote terminal device according to claim 16, further comprising:

第一发送模块，用于向所述远端UE的上层发送第一信息；其中，所述第一信息用于指示所述第一中继UE满足所述中继重选条件。The first sending module is configured to send first information to an upper layer of the remote UE; wherein, the first information is used to indicate that the first relay UE meets the relay reselection condition.
根据权利要求17所述的远端终端设备，其中，所述第一发送模块，具体用于：The remote terminal device according to claim 17, wherein the first sending module is specifically configured to:

若接收到所述第一中继UE通过副链路RRC消息发送的第二信息，则向所述远端UE的上层发送所述第一信息；If the second information sent by the first relay UE through the secondary link RRC message is received, sending the first information to the upper layer of the remote UE;

其中，所述第二信息为所述第一中继UE在确定副链路RRC重配置流程失败后发送的，所述第二信息用于指示所述第一中继UE满足所述中继重选条件。The second information is sent by the first relay UE after determining that the secondary link RRC reconfiguration procedure fails, and the second information is used to indicate that the first relay UE meets the requirements of the relay reconfiguration process. Selection conditions.
根据权利要求16所述的远端终端设备，其中，所述处理模块，具体用于：The remote terminal device according to claim 16, wherein the processing module is specifically configured to:

若在第一预设时段内未接收到任一副链路RRC消息，则确定副链路RRC重配置流程失败，其中，所述第一预设时段的起始时刻为所述远端UE向所述第一中继UE发送副链路RRC重配置消息的时刻。If no secondary link RRC message is received within the first preset time period, it is determined that the secondary link RRC reconfiguration procedure has failed, wherein the start time of the first preset time period is the remote UE direction The moment when the first relay UE sends the secondary link RRC reconfiguration message.
根据权利要求19所述的远端终端设备，其中，还包括：The remote terminal device according to claim 19, further comprising:

第二发送模块，用于在确定副链路RRC重配置流程失败之后，向所述第一中继UE发送第三信息；其中，所述第三信息用于指示所述第一中继UE满足所述中继重选条件。The second sending module is configured to send third information to the first relay UE after determining that the secondary link RRC reconfiguration process fails; wherein the third information is used to indicate that the first relay UE meets The relay reselection condition.
根据权利要求20所述的远端终端设备，其中，所述第二发送模块，具体用于：The remote terminal device according to claim 20, wherein the second sending module is specifically configured to:

通过副链路RRC消息或上层消息，向所述第一中继UE发送所述第三信息。The third information is sent to the first relay UE through a secondary link RRC message or an upper layer message.
根据权利要求16所述的远端终端设备，其中，还包括：The remote terminal device according to claim 16, further comprising:

上报模块，用于向网络设备上报第四信息，所述第四信息用于指示所述副链路SRB完整性保护验证失败和副链路RRC重配置失败中的至少一个。The reporting module is configured to report fourth information to the network device, where the fourth information is used to indicate at least one of a failure of verification of the integrity protection of the secondary link SRB and a failure of the secondary link RRC reconfiguration.
一种中继终端设备，包括：A relay terminal device, including:

处理模块，用于在确定满足中继重选条件的情况下，停止为远端UE提供中继服务；其中，所述确定满足中继重选条件包括以下至少之一：The processing module is configured to stop providing a relay service for the remote UE when it is determined that the relay reselection condition is satisfied; wherein the determining that the relay reselection condition is satisfied includes at least one of the following:

确定发送副链路无线资源控制RRC重配置失败消息；Determine to send a secondary link radio resource control RRC reconfiguration failure message;

确定所述远端UE接收到所述副链路RRC重配置失败消息；Determining that the remote UE receives the secondary link RRC reconfiguration failure message;

接收到所述远端UE发送的所述副链路RRC重配置失败消息；Receiving the secondary link RRC reconfiguration failure message sent by the remote UE;

确定副链路RRC重配置流程失败；Determine that the secondary link RRC reconfiguration process failed;

确定副链路信令无线承载SRB完整性保护验证失败；Determine that the secondary link signaling radio bearer SRB integrity protection verification fails;

确定基于Uu接口的数据无线承载DRB和SRB中的至少一个完整性保护验证失败，所述基于Uu接口的DRB和SRB中的至少一个用于中转所述远端UE的数据和/或信令。It is determined that the integrity protection verification of at least one of the Uu interface-based data radio bearer DRB and SRB fails, and the at least one of the Uu interface-based DRB and SRB is used to transfer data and/or signaling of the remote UE.
根据权利要求23所述的中继终端设备，其中，还包括：The relay terminal device according to claim 23, further comprising:

第一发送模块，用于向所述中继UE的上层发送第五信息；其中，所述第五信息用于指示所述中继UE满足所述中继重选条件。The first sending module is configured to send fifth information to an upper layer of the relay UE; wherein the fifth information is used to indicate that the relay UE meets the relay reselection condition.
根据权利要求24所述的中继终端设备，其中，所述第一发送模块，具体用于：The relay terminal device according to claim 24, wherein the first sending module is specifically configured to:

若接收到所述远端UE通过副链路RRC消息发送的第六信息，则向所述中继UE的上层发送所述第五信息；If the sixth information sent by the remote UE through the secondary link RRC message is received, sending the fifth information to the upper layer of the relay UE;

其中，所述第六信息为所述远端UE在确定副链路RRC重配置流程失败后发送的，所述第六信息用于指示所述中继UE满足所述中继重选条件。The sixth information is sent by the remote UE after determining that the secondary link RRC reconfiguration procedure fails, and the sixth information is used to indicate that the relay UE meets the relay reselection condition.
根据权利要求23所述的中继终端设备，其中，所述处理模块，具体用于：The relay terminal device according to claim 23, wherein the processing module is specifically configured to:

若在第二预设时段内未接收到任一副链路RRC消息，则确定副链路对应的RRC重配置流程失败，其中，所述第二预设时段的起始时刻为所述中继UE向所述远端UE发送副链路RRC重配置消息的时刻。If no secondary link RRC message is received within the second preset time period, it is determined that the RRC reconfiguration procedure corresponding to the secondary link fails, wherein the start time of the second preset time period is the relay The time when the UE sends a secondary link RRC reconfiguration message to the remote UE.
根据权利要求26所述的中继终端设备，其中，还包括：The relay terminal device according to claim 26, further comprising:

第二发送模块，用于在确定副链路RRC重配置流程失败之后，向所述远端UE发送第七信息；其中，所述第七信息用于指示所述中继UE满足所述中继重选条件。The second sending module is configured to send seventh information to the remote UE after determining that the secondary link RRC reconfiguration process fails; wherein the seventh information is used to indicate that the relay UE meets the requirements of the relay Re-selection conditions.
根据权利要求27所述的中继终端设备，其中，所述第二发送模块，具体用于：The relay terminal device according to claim 27, wherein the second sending module is specifically configured to:

通过副链路RRC消息或上层消息，向所述远端UE发送所述第七信息。The seventh information is sent to the remote UE through a secondary link RRC message or an upper layer message.
根据权利要求23所述的中继终端设备，其中，还包括：The relay terminal device according to claim 23, further comprising:

第一上报模块，用于向网络设备上报第八信息，所述第八信息用于指示所述副链路SRB完整性保护验证失败和副链路RRC重配置失败中的至少一个。The first reporting module is configured to report eighth information to the network device, where the eighth information is used to indicate at least one of a failure of verification of the integrity protection of the secondary link SRB and a failure of the secondary link RRC reconfiguration.
根据权利要求23所述的中继终端设备，其中，还包括：The relay terminal device according to claim 23, further comprising:

第二上报模块，用于向网络设备上报第九信息，所述第九信息用于指示所述基于Uu接口的DRB和SRB中的至少一个完整性保护验证失败。The second reporting module is configured to report ninth information to the network device, where the ninth information is used to indicate that at least one of the Uu interface-based DRB and SRB integrity protection verification fails.
一种终端设备，包括：存储器、处理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权利要求1至7中任一项所述的方法的步骤；或者所述程序或指令被所述处理器执行时实现如权利要求8至15中任一项所述的方法的步骤。A terminal device, comprising: a memory, a processor, and a program or instruction that is stored on the memory and can run on the processor. When the program or instruction is executed by the processor, the program or instruction implements as claimed in claims 1 to 7. The steps of the method according to any one of claims 7; or the steps of the method according to any one of claims 8 to 15 are implemented when the program or instruction is executed by the processor.
一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被所述处理器执行时实现如权利要求1至7中任一项所述的方法的步骤；或者所述程序或指令被所述处理器执行时实现如权利要求8至15中任一项所述的方法的步骤。A readable storage medium on which a program or instruction is stored, and when the program or instruction is executed by the processor, the steps of the method according to any one of claims 1 to 7 are implemented; or When the program or instruction is executed by the processor, the steps of the method according to any one of claims 8 to 15 are implemented.