WO2023115335A1

WO2023115335A1 - Sidelink transmission method and apparatus and terminal device

Info

Publication number: WO2023115335A1
Application number: PCT/CN2021/140102
Authority: WO
Inventors: 赵振山; 林晖闵; 史志华; 陈文洪
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2023-06-29
Also published as: CN118077277A

Abstract

Embodiments of the present application provide a sidelink transmission method and apparatus and a terminal device. The method comprises: a first terminal device sends a first sidelink transmission to a second terminal device by using a first default spatial domain transmission filter, and/or receives, by using a first default spatial domain reception filter, a second sidelink transmission sent by the second terminal device.

Description

一种侧行传输方法及装置、终端设备A sidewalk transmission method and device, and terminal equipment

技术领域technical field

本申请实施例涉及移动通信技术领域，具体涉及一种侧行传输方法及装置、终端设备。The embodiments of the present application relate to the field of mobile communication technologies, and in particular to a sidelink transmission method and device, and a terminal device.

背景技术Background technique

为了提升侧行传输***的传输速率，考虑在侧行传输***中使用毫米波频段。而在侧行毫米波传输***中，需要确定终端设备的最优传输波束，例如最优发送波束，最优接收波束，终端设备使用最优传输波束进行侧行通信。然而，在某些情况下，例如终端设备尚未确定出最优波束或者不能使用最优波束的情况，终端设备如何进行侧行通信需要解决。In order to improve the transmission rate of the sidelink transmission system, consider using the millimeter wave frequency band in the sidelink transmission system. However, in the sidewalk millimeter wave transmission system, it is necessary to determine the optimal transmission beam of the terminal equipment, such as the optimal transmission beam and the optimal reception beam, and the terminal equipment uses the optimal transmission beam for sidewalk communication. However, in some cases, for example, the terminal device has not yet determined the optimal beam or cannot use the optimal beam, how the terminal device performs lateral communication needs to be resolved.

发明内容Contents of the invention

本申请实施例提供一种侧行传输方法及装置、终端设备、芯片、计算机可读存储介质、计算机程序产品、计算机程序。Embodiments of the present application provide a lateral transmission method and device, a terminal device, a chip, a computer-readable storage medium, a computer program product, and a computer program.

本申请实施例提供的侧行传输方法，包括：The lateral transmission method provided in the embodiment of the present application includes:

第一终端设备使用第一缺省空域发送滤波器(spatial domain transmission filter)向第二终端设备发送第一侧行传输，和/或使用第一缺省空域接收滤波器(spatial domain reception filter)接收所述第二终端设备发送的第二侧行传输。The first terminal device transmits the first lateral transmission to the second terminal device using a first default spatial domain transmission filter, and/or receives using a first default spatial domain reception filter A second sidelink transmission sent by the second terminal device.

第二终端设备使用第三缺省空域接收滤波器接收第一终端设备发送的第一侧行传输，和/或使用第三缺省空域发送滤波器向所述第一终端设备发送第二侧行传输。The second terminal device receives the first sidelink transmission sent by the first terminal device using the third default airspace receive filter, and/or transmits the second sidelink transmission to the first terminal device using the third default spacespace transmit filter transmission.

本申请实施例提供的侧行传输装置，应用于第一终端设备，所述装置包括：The lateral transmission device provided in the embodiment of the present application is applied to the first terminal device, and the device includes:

传输单元，用于使用第一缺省空域发送滤波器向第二终端设备发送第一侧行传输，和/或使用第一缺省空域接收滤波器接收所述第二终端设备发送的第二侧行传输。A transmission unit, configured to use the first default airspace transmit filter to send the first sideline transmission to the second terminal device, and/or use the first default airspace receive filter to receive the second sideline transmission sent by the second terminal device Line transmission.

本申请实施例提供的侧行传输装置，应用于第二终端设备，所述装置包括：The lateral transmission device provided in the embodiment of the present application is applied to the second terminal device, and the device includes:

传输单元，用于使用第三缺省空域接收滤波器接收第一终端设备发送的第一侧行传输，和/或使用第三缺省空域发送滤波器向所述第一终端设备发送第二侧行传输。A transmission unit, configured to use a third default airspace receiving filter to receive the first lateral transmission sent by the first terminal device, and/or use a third default airspace transmitting filter to send the second lateral transmission to the first terminal device Line transmission.

本申请实施例提供的终端设备，包括处理器和存储器。该存储器用于存储计算机程序，该处理器用于调用并运行该存储器中存储的计算机程序，执行上述的侧行传输方法。The terminal device provided in the embodiment of the present application includes a processor and a memory. The memory is used for storing computer programs, and the processor is used for invoking and running the computer programs stored in the memory to execute the above-mentioned lateral transmission method.

本申请实施例提供的芯片，用于实现上述的侧行传输方法。The chip provided in the embodiment of the present application is used to realize the above-mentioned sidewalk transmission method.

具体地，该芯片包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有该芯片的设备执行上述的侧行传输方法。Specifically, the chip includes: a processor, configured to invoke and run a computer program from the memory, so that the device installed with the chip executes the above-mentioned sidewalk transmission method.

本申请实施例提供的计算机可读存储介质，用于存储计算机程序，该计算机程序使得计算机执行上述的侧行传输方法。The computer-readable storage medium provided by the embodiment of the present application is used for storing a computer program, and the computer program causes a computer to execute the above-mentioned lateral transmission method.

本申请实施例提供的计算机程序产品，包括计算机程序指令，该计算机程序指令使得计算机执行上述的侧行传输方法。The computer program product provided by the embodiments of the present application includes computer program instructions, and the computer program instructions cause a computer to execute the above-mentioned lateral transmission method.

本申请实施例提供的计算机程序，当其在计算机上运行时，使得计算机执行上述的侧行传输方法。The computer program provided by the embodiment of the present application, when running on a computer, enables the computer to execute the above-mentioned lateral transmission method.

通过上述技术方案，在第一终端设备尚未确定出最优波束或者不能使用最优波束的情况下，第一终端设备使用第一缺省空域发送滤波器(也即第一缺省发送波束)向第二终端设备发送第一侧行传输，和/或使用第一缺省空域接收滤波器(也即第一缺省接收波束)接收所述第二终端设备发送的第二侧行传输，如此，可以实现第一终端设备与第二终端设备进行正常的侧行通信。Through the above technical solution, in the case that the first terminal device has not determined the optimal beam or cannot use the optimal beam, the first terminal device uses the first default airspace transmission filter (that is, the first default transmission beam) to The second terminal device sends the first sidelink transmission, and/or receives the second sidelink transmission sent by the second terminal device using the first default spatial receiving filter (that is, the first default receiving beam), thus, Normal side communication between the first terminal device and the second terminal device can be realized.

附图说明Description of 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 accompanying drawings described here are used to provide a further understanding of the application and constitute a part of the application. The schematic embodiments of the application and their descriptions are used to explain the application and do not constitute improper limitations to the application. In the attached picture:

图1是本申请实施例的一个应用场景的示意图；FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application;

图2-1是本申请实施例提供的网络覆盖范围内侧行通信的示意图；FIG. 2-1 is a schematic diagram of inline communication within the network coverage provided by the embodiment of the present application;

图2-2是本申请实施例提供的部分网络覆盖侧行通信的示意图；Figure 2-2 is a schematic diagram of partial network coverage side communication provided by the embodiment of the present application;

图2-3是本申请实施例提供的网络覆盖外侧行通信的示意图；2-3 are schematic diagrams of outbound communication provided by the network coverage provided by the embodiment of the present application;

图2-4是本申请实施例提供的有中央控制节点控制侧行通信的示意图；Figures 2-4 are schematic diagrams of a central control node controlling lateral communication provided by an embodiment of the present application;

图3-1是本申请实施例提供的单播传输方式的示意图；Figure 3-1 is a schematic diagram of the unicast transmission mode provided by the embodiment of the present application;

图3-2是本申请实施例提供的组播传输方式的示意图；Figure 3-2 is a schematic diagram of the multicast transmission mode provided by the embodiment of the present application;

图3-3是本申请实施例提供的广播传输方式的示意图；Figure 3-3 is a schematic diagram of the broadcast transmission mode provided by the embodiment of the present application;

图4是本申请实施例提供的时隙结构的示意图；FIG. 4 is a schematic diagram of a time slot structure provided by an embodiment of the present application;

图5是本申请实施例提供的SL CSI-RS时频位置的示意图；FIG. 5 is a schematic diagram of the time-frequency position of the SL CSI-RS provided by the embodiment of the present application;

图6是本申请实施例提供的不使用波束赋形和使用波束赋形的示意图；FIG. 6 is a schematic diagram of beamforming without beamforming and beamforming provided by an embodiment of the present application;

图7是本申请实施例提供的PDSCH的TCI状态配置方法的示意图；FIG. 7 is a schematic diagram of a method for configuring a TCI state of a PDSCH provided in an embodiment of the present application;

图8是本申请实施例提供的波束选取的示意图；FIG. 8 is a schematic diagram of beam selection provided by an embodiment of the present application;

图9是本申请实施例提供的侧行传输方法的流程示意图一；FIG. 9 is a first schematic flow diagram of a lateral transmission method provided by an embodiment of the present application;

图10是本申请实施例提供的侧行传输方法的流程示意图二；FIG. 10 is a second schematic flow diagram of the lateral transmission method provided by the embodiment of the present application;

图11是本申请实施例提供的发送端确定最优发送波束过程的示意图；FIG. 11 is a schematic diagram of the process of determining the optimal transmission beam by the transmitting end provided by the embodiment of the present application;

图12是本申请实施例提供的第一缺省波束和目标发送波束的时域位置的示意图；FIG. 12 is a schematic diagram of the time-domain positions of the first default beam and the target transmission beam provided by the embodiment of the present application;

图13是本申请实施例提供的侧行传输装置的结构组成示意图一；Fig. 13 is a schematic diagram of the first structural composition of the lateral transmission device provided by the embodiment of the present application;

图14是本申请实施例提供的侧行传输装置的结构组成示意图二；Fig. 14 is a second schematic diagram of the structure and composition of the lateral transmission device provided by the embodiment of the present application;

图15是本申请实施例提供的一种通信设备示意性结构图；Fig. 15 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

图16是本申请实施例的芯片的示意性结构图。FIG. 16 is a schematic structural diagram of a chip 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做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 below with reference to the 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 persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

图1是本申请实施例的一个应用场景的示意图。FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.

如图1所示，通信***100可以包括终端设备110和网络设备120。网络设备120可以通过空口与终端设备110通信。终端设备110和网络设备120之间支持多业务传输。As shown in FIG. 1 , a communication system 100 may include a terminal device 110 and a network device 120 . The network device 120 may communicate with the terminal device 110 through an air interface. Multi-service transmission is supported between the terminal device 110 and the network device 120 .

应理解，本申请实施例仅以通信***100进行示例性说明，但本申请实施例不限定于此。也就是说，本申请实施例的技术方案可以应用于各种通信***，例如：长期演进(Long Term Evolution，LTE)***、LTE时分双工(Time Division Duplex，TDD)、通用移动通信***(Universal Mobile Telecommunication System，UMTS)、物联网(Internet of Things，IoT)***、窄带物联网(Narrow Band Internet of Things，NB-IoT)***、增强的机器类型通信(enhanced Machine-Type Communications，eMTC)***、5G通信***(也称为新无线(New Radio，NR)通信***)，或未来的通信***等。It should be understood that the embodiment of the present application is only described by using the communication system 100 as an example, but the embodiment of the present application is not limited thereto. That is to say, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (Long Term Evolution, LTE) system, LTE Time Division Duplex (Time Division Duplex, TDD), Universal Mobile Communication System (Universal Mobile Telecommunication System, UMTS), Internet of Things (Internet of Things, IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine-Type Communications (eMTC) system, 5G communication system (also known as New Radio (NR) communication system), or future communication systems, etc.

在图1所示的通信***100中，网络设备120可以是与终端设备110通信的接入网设备。接入网设备可以为特定的地理区域提供通信覆盖，并且可以与位于该覆盖区域内的终端设备110(例如UE)进行通信。In the communication system 100 shown in FIG. 1 , the network device 120 may be an access network device that communicates with the terminal device 110 . The access network device can provide communication coverage for a specific geographic area, and can communicate with terminal devices 110 (such as UEs) located in the coverage area.

网络设备120可以是长期演进(Long Term Evolution，LTE)***中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者是下一代无线接入网(Next Generation Radio Access Network，NG RAN)设备，或者是NR***中的基站(gNB)，或者是云无线接入网络(Cloud Radio Access Network，CRAN)中的无线控制器，或者该网络设备120可以为中继站、接入点、车载设备、可穿戴设备、集线器、交换机、网桥、路由器，或者未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)中的网络设备等。The network device 120 may be an evolved base station (Evolutional Node B, eNB or eNodeB) in a long-term evolution (Long Term Evolution, LTE) system, or a next-generation radio access network (Next Generation Radio Access Network, NG RAN) device, Either a base station (gNB) in the NR system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device 120 can be a relay station, an access point, a vehicle-mounted device, a wearable Devices, hubs, switches, bridges, routers, or network devices in the future evolution of the Public Land Mobile Network (Public Land Mobile Network, PLMN), etc.

终端设备110可以是任意终端设备，其包括但不限于与网络设备120或其它终端设备采用有线或者无线连接的终端设备。The terminal device 110 may be any terminal device, including but not limited to a terminal device connected to the network device 120 or other terminal devices by wire or wirelessly.

例如，所述终端设备110可以指接入终端、用户设备(User Equipment，UE)、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP) 电话、IoT设备、卫星手持终端、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、5G网络中的终端设备或者未来演进网络中的终端设备等。For example, the terminal equipment 110 may refer to an access terminal, a user equipment (User Equipment, UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, user agent, or user device. An access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, an IoT device, a satellite handheld terminal, a Wireless Local Loop (WLL) station, a Personal Digital Assistant , PDA), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or terminal devices in future evolution networks, etc.

终端设备110可以用于设备到设备(Device to Device，D2D)的通信。The terminal device 110 can be used for device-to-device (Device to Device, D2D) communication.

无线通信***100还可以包括与基站进行通信的核心网设备130，该核心网设备130可以是5G核心网(5G Core，5GC)设备，例如，接入与移动性管理功能(Access and Mobility Management Function，AMF)，又例如，认证服务器功能(Authentication Server Function，AUSF)，又例如，用户面功能(User Plane Function，UPF)，又例如，会话管理功能(Session Management Function，SMF)。可选地，核心网络设备130也可以是LTE网络的分组核心演进(Evolved Packet Core，EPC)设备，例如，会话管理功能+核心网络的数据网关(Session Management Function+Core Packet Gateway，SMF+PGW-C)设备。应理解，SMF+PGW-C可以同时实现SMF和PGW-C所能实现的功能。在网络演进过程中，上述核心网设备也有可能叫其它名字，或者通过对核心网的功能进行划分形成新的网络实体，对此本申请实施例不做限制。The wireless communication system 100 may also include a core network device 130 that communicates with the base station. The core network device 130 may be a 5G core network (5G Core, 5GC) device, for example, Access and Mobility Management Function (Access and Mobility Management Function , AMF), and for example, authentication server function (Authentication Server Function, AUSF), and for example, user plane function (User Plane Function, UPF), and for example, session management function (Session Management Function, SMF). Optionally, the core network device 130 may also be a packet core evolution (Evolved Packet Core, EPC) device of the LTE network, for example, a data gateway (Session Management Function+Core Packet Gateway, SMF+PGW- C) equipment. It should be understood that SMF+PGW-C can realize the functions of SMF and PGW-C at the same time. In the process of network evolution, the above-mentioned core network equipment may be called by other names, or a new network entity may be formed by dividing functions of the core network, which is not limited in this embodiment of the present application.

通信***100中的各个功能单元之间还可以通过下一代网络(next generation，NG)接口建立连接实现通信。Various functional units in the communication system 100 may also establish a connection through a next generation network (next generation, NG) interface to implement communication.

例如，终端设备通过NR接口与接入网设备建立空口连接，用于传输用户面数据和控制面信令；终端设备可以通过NG接口1(简称N1)与AMF建立控制面信令连接；接入网设备例如下一代无线接入基站(gNB)，可以通过NG接口3(简称N3)与UPF建立用户面数据连接；接入网设备可以通过NG接口2(简称N2)与AMF建立控制面信令连接；UPF可以通过NG接口4(简称N4)与SMF建立控制面信令连接；UPF可以通过NG接口6(简称N6)与数据网络交互用户面数据；AMF可以通过NG接口11(简称N11)与SMF建立控制面信令连接；SMF可以通过NG接口7(简称N7)与PCF建立控制面信令连接。For example, the terminal device establishes an air interface connection with the access network device through the NR interface to transmit user plane data and control plane signaling; the terminal device can establish a control plane signaling connection with the AMF through the NG interface 1 (N1 for short); access Network equipment such as the next generation wireless access base station (gNB), can establish a user plane data connection with UPF through NG interface 3 (abbreviated as N3); access network equipment can establish control plane signaling with AMF through NG interface 2 (abbreviated as N2) connection; UPF can establish a control plane signaling connection with SMF through NG interface 4 (abbreviated as N4); UPF can exchange user plane data with the data network through NG interface 6 (abbreviated as N6); AMF can communicate with SMF through NG interface 11 (abbreviated as N11) The SMF establishes a control plane signaling connection; the SMF may establish a control plane signaling connection with the PCF through an NG interface 7 (N7 for short).

图1示例性地示出了一个基站、一个核心网设备和两个终端设备，可选地，该无线通信***100可以包括多个基站设备并且每个基站的覆盖范围内可以包括其它数量的终端设备，本申请实施例对此不做限定。Figure 1 exemplarily shows a base station, a core network device, and two terminal devices. Optionally, the wireless communication system 100 may include multiple base station devices and each base station may include other numbers of terminals within the coverage area. The device is not limited in the embodiment of this application.

需要说明的是，图1只是以示例的形式示意本申请所适用的***，当然，本申请实施例所示的方法还可以适用于其它***。此外，本文中术语“***”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。还应理解，在本申请的实施例中提到的“指示”可以是直接指示，也可以是间接指示，还可以是表示具有关联关系。举例说明，A指示B，可以表示A直接指示B，例如B可以通过A获取；也可以表示A间接指示B，例如A指示C，B可以通过C获取；还可以表示A和B之间具有关联关系。还应理解，在本申请的实施例中提到的“对应”可表示两者之间具有直接对应或间接对应的关系，也可以表示两者之间具有关联关系，也可以是指示与被指示、配置与被配置等关系。还应理解，在本申请的实施例中提到的“预定义”或“预定义规则”可以通过在设备(例如，包括终端设备和网络设备)中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现，本申请对于其具体的实现方式不做限定。比如预定义可以是指协议中定义的。还应理解，本申请实施例中，所述"协议"可以指通信领域的标准协议，例如可以包括LTE协议、NR协议以及应用于未来的通信***中的相关协议，本申请对此不做限定。It should be noted that FIG. 1 is only an illustration of a system applicable to this application, and of course, the method shown in the embodiment of this application may also be applicable to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship. It should also be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation. It should also be understood that the "correspondence" mentioned in the embodiments of the present application may mean that there is a direct correspondence or an indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated. , configuration and configured relationship. It should also be understood that the "predefined" or "predefined rules" mentioned in the embodiments of this application can be used by pre-saving corresponding codes, tables or other It is implemented by indicating related information, and this application does not limit the specific implementation. For example, pre-defined may refer to defined in the protocol. It should also be understood that in the embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, it may include the LTE protocol, the NR protocol, and related protocols applied to future communication systems, and this application does not limit this .

为便于理解本申请实施例的技术方案，以下对本申请实施例的相关技术进行说明，以下相关技术作为可选方案与本申请实施例的技术方案可以进行任意结合，其均属于本申请实施例的保护范围。In order to facilitate the understanding of the technical solutions of the embodiments of the present application, the related technologies of the embodiments of the present application are described below. The following related technologies can be combined with the technical solutions of the embodiments of the present application as optional solutions, and all of them belong to the embodiments of the present application. protected range.

不同网络覆盖环境下的侧行通信Sidewalk communication under different network coverage environments

在侧行通信中，根据进行通信的终端设备所处的网络覆盖情况，可以分为网络覆盖内侧行通信，部分网络覆盖侧行通信，及网络覆盖外侧行通信。In side communication, according to the network coverage of the communicating terminal equipment, it can be divided into network coverage inner communication, partial network coverage side communication, and network coverage outer communication.

如图2-1所示，在网络覆盖内侧行通信中，所有进行侧行通信的终端设备均处于同一基站的覆盖范围内，从而，上述终端设备均可以通过接收基站的配置信令，基于相同的侧行配置进行侧行通信。As shown in Figure 2-1, in the inbound communication under network coverage, all terminal devices performing sidelink communication are within the coverage of the same base station. Therefore, the above-mentioned terminal devices can receive configuration signaling from the base station, based on the same Sidewalk configuration for sidewalk communication.

如图2-2所示，在部分网络覆盖侧行通信情况下，部分进行侧行通信的终端设备位于基站的覆盖范围内，这部分终端设备能够接收到基站的配置信令，而且根据基站的配置进行侧行通信。而位于网络覆盖范围外的终端设备，无法接收基站的配置信令，在这种情况下，网络覆盖范围外的终端设备将根据预配置(pre-configuration)信息及位于网络覆盖范围内的终端设备发送的物理侧行广播信道(Physical Sidelink Broadcast Channel，PSBCH)中携带的信息确定侧行配置，从而进行侧行通信。As shown in Figure 2-2, when part of the network covers sidelink communication, some terminal devices performing sidelink communication are located within the coverage of the base station. These terminal devices can receive configuration signaling from the base station, and according to the Configured for sidewalk communication. However, terminal devices outside the network coverage cannot receive configuration signaling from the base station. In this case, the terminal devices outside the network coverage will The information carried in the sent Physical Sidelink Broadcast Channel (Physical Sidelink Broadcast Channel, PSBCH) determines the sidelink configuration for sidelink communication.

如图2-3所示，对于网络覆盖外侧行通信，所有进行侧行通信的终端设备均位于网络覆盖范围外，所有终端设备均根据预配置信息确定侧行配置进行侧行通信。As shown in Figure 2-3, for outbound communication under network coverage, all terminal devices performing sidelink communication are located outside the network coverage, and all terminal devices determine the sidelink configuration according to the pre-configuration information to perform sidelink communication.

如图2-4所示，对于有中央控制节点的侧行通信，多个终端设备构成一个通信组，该通信组内具有中央控制节点，又可以称为组头(Cluster Header，CH)终端设备，该中央控制节点具有以下功能之一：负责通信组的建立；组成员的加入、离开；进行资源协调，为其他终端设备分配侧行传输资源，接收其他终端设备的侧行反馈信息；与其他通信组进行资源协调等功能。As shown in Figure 2-4, for side communication with a central control node, multiple terminal devices form a communication group, which has a central control node, which can also be called a cluster head (Cluster Header, CH) terminal device , the central control node has one of the following functions: responsible for the establishment of communication groups; joining and leaving of group members; performing resource coordination, allocating side transmission resources for other terminal equipment, receiving side transmission feedback information from other terminal equipment; The communication group performs resource coordination and other functions.

设备到设备(Device to Device，D2D)/车联到其他设备Vehicle-to-Everything，V2X)Device to Device (D2D) / Vehicle-to-Everything (V2X)

设备到设备通信是基于D2D的一种侧行链路(Sidelink，SL)传输技术，与传统的蜂窝***中通信数据通过基站接收或者发送的方式不同，因此具有更高的频谱效率以及更低的传输时延。车联网***采用设备到设备直接通信的方式，定义了两种传输模式：第一模式和第二模式。Device-to-device communication is a sidelink (Sidelink, SL) transmission technology based on D2D. It is different from the way communication data is received or sent by the base station in the traditional cellular system, so it has higher spectral efficiency and lower transmission delay. The Internet of Vehicles system adopts the method of device-to-device direct communication, and defines two transmission modes: the first mode and the second mode.

第一模式：终端设备的传输资源是由基站分配的，终端设备根据基站分配的资源在侧行链路上进行数据的发送。基站可以为终端设备分配单次传输的资源，也可以为终端设备分配半静态传输的资源。例如图2-1中，终端设备位于网络覆盖范围内，基站为终端设备分配侧行传输使用的传输资源。The first mode: the transmission resource of the terminal device is allocated by the base station, and the terminal device sends data on the sidelink according to the resources allocated by the base station. The base station can allocate resources for a single transmission to the terminal equipment, and can also allocate resources for semi-static transmission to the terminal equipment. For example, in Figure 2-1, the terminal device is located within the coverage of the network, and the base station allocates transmission resources for sidelink transmission to the terminal device.

第二模式：终端设备在资源池中选取一个资源进行数据的传输。例如图2-3中，终端设备位于小区覆盖范围外，终端设备在预配置的资源池中自主选取传输资源进行侧行传输。或者例如图1-1中，终端设备在网络配置的资源池中自主选取传输资源进行侧行传输。The second mode: the terminal device selects a resource from the resource pool for data transmission. For example, in Figure 2-3, the terminal device is located outside the coverage of the cell, and the terminal device independently selects transmission resources from the pre-configured resource pool for sidelink transmission. Or, for example, as shown in Figure 1-1, the terminal device autonomously selects transmission resources from the resource pool configured by the network for sidelink transmission.

需要说明的是，本申请对上述第一模式和第二模式的名称不做限定。It should be noted that, the present application does not limit the names of the above-mentioned first mode and the second mode.

在NR-V2X中，需要支持自动驾驶，因此对车辆之间数据交互提出了更高的要求，如更高的吞吐量、更低的时延、更高的可靠性、更大的覆盖范围、更灵活的资源分配等。In NR-V2X, autonomous driving needs to be supported, so higher requirements are placed on data interaction between vehicles, such as higher throughput, lower latency, higher reliability, greater coverage, More flexible resource allocation, etc.

在LTE-V2X中，支持广播传输方式，在NR-V2X中，引入了单播传输方式和组播传输方式。对于单播传输方式，接收端只有一个终端设备，如图3-1中，终端设备1和终端设备2之间进行单播传输。对于组播传输方式，接收端是一个通信组内的所有终端设备，或者是在一定传输距离内的所有终端设备，如图3-2中，终端设备1、终端设备2、终端设备3和终端设备4构成一个通信组，其中终端设备1发送数据，该组内的其他终端设备都是接收端。对于广播传输方式，接收端是发送端周围的任意一个终端设备，如图3-3中，终端设备1是发送端，其周围的其他终端设备(如终端设备2至终端设备6)都是接收端。In LTE-V2X, the broadcast transmission mode is supported, and in NR-V2X, the unicast transmission mode and the multicast transmission mode are introduced. For the unicast transmission mode, there is only one terminal device at the receiving end. As shown in Figure 3-1, unicast transmission is performed between terminal device 1 and terminal device 2. For the multicast transmission mode, the receiving end is all terminal devices in a communication group, or all terminal devices within a certain transmission distance, as shown in Figure 3-2, terminal device 1, terminal device 2, terminal device 3 and terminal Device 4 forms a communication group, in which terminal device 1 sends data, and other terminal devices in the group are receivers. For the broadcast transmission mode, the receiving end is any terminal device around the sending end. end.

NR-V2X***帧结构NR-V2X system frame structure

NR-V2X中的时隙结构如图4所示，其中图4中的(a)示意出了时隙中不包括物理侧行反馈信道(Physical Sidelink Feedback Channel，PSFCH)的时隙结构；图4中的(b)示意出了时隙中包括PSFCH的时隙结构。The time slot structure in NR-V2X is shown in Figure 4, where (a) in Figure 4 shows the time slot structure that does not include the Physical Sidelink Feedback Channel (PSFCH) in the time slot; Figure 4 (b) in (b) shows the slot structure including PSFCH in the slot.

NR-V2X中，物理侧行控制信道(Physical Sidelink Control Channel，PSCCH)在时域上从该时隙的第二个时域符号开始，占用2个或3个时域符号，在频域上可以占用{10,12 15,20,25}个物理资源块(Physical Resource Block，PRB)。为了降低终端设备对PSCCH的盲检测的复杂度，在一个资源池内只允许为PSCCH配置一个时域符号个数和PRB个数。另外，因为子信道为NR-V2X中物理侧行共享信道(Physical Sidelink Shared Channel，PSSCH)资源分配的最小粒度，PSCCH占用的PRB个数必须小于或等于资源池内一个子信道中包含的PRB个数，以免对PSSCH资源选择或分配造成额外的限制。PSSCH在时域上也是从该时隙的第二个时域符号开始，该时隙中的最后一个时域符号用作保护间隔(Guard period，GP)符号，其余符号映射PSSCH。该时隙中的第一个时域符号是第二个时域符号的重复，通常接收端将第一个时域符号用作自动增益控制(Automatic Gain Control，AGC)符号，该符号上的数据通常不用于数据解调。PSSCH在频域上占据K个子信道，每个子信道包括N个连续的PRB，如图4中的(a)所示。当时隙中包含PSFCH时，该时隙中倒数第二个和倒数第三个符号用作PSFCH传输，在PSFCH之前的一个时域符号用作GP符号，如图4中的(b)所示。In NR-V2X, the Physical Sidelink Control Channel (PSCCH) starts from the second time-domain symbol of the time slot in the time domain and occupies 2 or 3 time-domain symbols. In the frequency domain, it can Occupies {10,12 15,20,25} physical resource blocks (Physical Resource Block, PRB). In order to reduce the complexity of the blind detection of the PSCCH by the terminal equipment, only one number of symbols in the time domain and one number of PRBs are allowed to be configured for the PSCCH in one resource pool. In addition, because sub-channels are the minimum granularity for Physical Sidelink Shared Channel (PSSCH) resource allocation in NR-V2X, the number of PRBs occupied by PSCCH must be less than or equal to the number of PRBs contained in a sub-channel in the resource pool , so as not to impose additional restrictions on PSSCH resource selection or allocation. In the time domain, the PSSCH also starts from the second time domain symbol of the time slot, the last time domain symbol in the time slot is used as a guard interval (Guard period, GP) symbol, and the remaining symbols are mapped to the PSSCH. The first time-domain symbol in this slot is a repetition of the second time-domain symbol. Usually, the receiver uses the first time-domain symbol as an Automatic Gain Control (AGC) symbol. The data on this symbol Typically not used for data demodulation. The PSSCH occupies K sub-channels in the frequency domain, and each sub-channel includes N consecutive PRBs, as shown in (a) in FIG. 4 . When a time slot contains PSFCH, the second-to-last and third-to-last symbols in the time slot are used for PSFCH transmission, and a time-domain symbol before PSFCH is used as a GP symbol, as shown in (b) in Figure 4 .

需要说明的是，对于侧行传输***来说，本申请中所描述的时域符号是指侧行符号。其中，本申请中所描述的时域符号可以是正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)符号。It should be noted that, for a sidelink transmission system, the time domain symbols described in this application refer to sidelink symbols. Wherein, the time-domain symbols described in this application may be Orthogonal Frequency Division Multiplexing (OFDM) symbols.

侧行信道状态信息-参考信号(Channel State Information-Reference Signal，CSI-RS)Side channel state information-reference signal (Channel State Information-Reference Signal, CSI-RS)

为了更好的支持单播通信，NR-V2X中支持侧行CSI-RS(SL CSI-RS)，SL CSI-RS只有满足以下三个条件时才会发送：In order to better support unicast communication, NR-V2X supports sideline CSI-RS (SL CSI-RS), and SL CSI-RS will only be sent when the following three conditions are met:

1、终端设备发送对应的PSSCH，也就是说，终端设备不能只发送SL CSI-RS；1. The terminal device sends the corresponding PSSCH, that is to say, the terminal device cannot only send SL CSI-RS;

2、高层信令激活了侧行信道状态信息(Channel State Information，CSI)上报；2. High-level signaling activates reporting of side channel state information (Channel State Information, CSI);

3、在高层信令激活侧行CSI上报的情况下，终端设备发送的二阶侧行控制信息(Sidelink Control Information，SCI)中的相应比特触发了侧行CSI上报。3. In the case that sidelink CSI reporting is activated by high-layer signaling, the corresponding bit in the second-order sidelink control information (Sidelink Control Information, SCI) sent by the terminal device triggers sidelink CSI reporting.

SL CSI-RS支持的最大端口数为2。SL CSI-RS支持两个端口时，不同端口的SL CSI-RS在同一个时域符号的相邻两个资源单元(Resource Element，RE)上通过码分的方式复用，在一个PRB内每个端口的SL CSI-RS的个数为1，即密度为1。所以，在一个PRB内SL CSI-RS最多只会出现在一个时域符号上，这个符号的具***置由发送端确定，为了避免对PSCCH和第二阶SCI的资源映射造成影响，SL CSI-RS不能与PSCCH和第二阶SCI位于同一个时域符号。由于PSSCH的解调参考信号(Demodulation Reference Signal，DMRS)所在符号的信道估计精度较高，而且两个端口的SL CSI-RS将在频域上占用两个连续的RE，所以SL CSI-RS也不能和PSSCH的DMRS在同一个时域符号上。SL CSI-RS所在的符号的位置由PC5-RRC信令中的sl-CSI-RS-FirstSymbol参数指示。The maximum number of ports supported by SL CSI-RS is 2. When the SL CSI-RS supports two ports, the SL CSI-RS of different ports are multiplexed on two adjacent Resource Elements (Resource Elements, REs) of the same time domain symbol through code division, and each The number of SL CSI-RS for each port is 1, that is, the density is 1. Therefore, SL CSI-RS will only appear on one time-domain symbol at most in a PRB. The specific position of this symbol is determined by the sender. In order to avoid affecting the resource mapping of PSCCH and second-order SCI, SL CSI-RS It cannot be located in the same time-domain symbol as PSCCH and second-order SCI. Since the channel estimation accuracy of the symbol where the demodulation reference signal (Demodulation Reference Signal, DMRS) of PSSCH is located is high, and the SL CSI-RS of two ports will occupy two consecutive REs in the frequency domain, so the SL CSI-RS also It cannot be on the same time-domain symbol as the DMRS of the PSSCH. The position of the symbol where the SL CSI-RS is located is indicated by the sl-CSI-RS-FirstSymbol parameter in the PC5-RRC signaling.

SL CSI-RS在一个PRB内占用的第一个RE的位置由PC5-RRC信令中的sl-CSI-RS-FreqAllocation参数指示。如果SL CSI-RS为一个端口，该参数为长度为12的比特位图，对应一个PRB内的12个RE；如果SL CSI-RS为两个端口，该参数为长度为6的比特位图，在这种情况下SL CSI-RS占用2f(1)和2f(1)+1两个RE，其中f(1)表示值为1的比特在上述比特位图中的索引。SL CSI-RS的频域位置也是由发送端确定，但是确定的SL CSI-RS的频域位置不能和相位跟踪参考信号(Phase Tracking-Reference Signal，PT-RS)发生冲突。图5给出了一种SL CSI-RS时频位置示意图，在该示意图中，SL CSI-RS的端口数为2，sl-CSI-RS-FirstSymbol为8，sl-CSI-RS-FreqAllocation为[b ₅,b ₄,b ₃,b ₂,b ₁,b ₀]＝[0,0,0,1,0,0]。 The position of the first RE occupied by the SL CSI-RS in a PRB is indicated by the sl-CSI-RS-FreqAllocation parameter in the PC5-RRC signaling. If the SL CSI-RS is one port, this parameter is a bitmap with a length of 12, corresponding to 12 REs in one PRB; if the SL CSI-RS is two ports, this parameter is a bitmap with a length of 6, In this case, the SL CSI-RS occupies two REs of 2f(1) and 2f(1)+1, where f(1) represents the index of the bit whose value is 1 in the above bitmap. The frequency domain position of the SL CSI-RS is also determined by the transmitting end, but the determined frequency domain position of the SL CSI-RS cannot conflict with a phase tracking reference signal (Phase Tracking-Reference Signal, PT-RS). Figure 5 shows a schematic diagram of the time-frequency location of SL CSI-RS. In this schematic diagram, the number of SL CSI-RS ports is 2, sl-CSI-RS-FirstSymbol is 8, and sl-CSI-RS-FreqAllocation is [ b ₅ , b ₄ , b ₃ , b ₂ , b ₁ , b ₀ ]=[0,0,0,1,0,0].

多波束***multi-beam system

NR/5G***的设计目标包括高频段(例如6GHz以上的频段)的大带宽通信。当工作频率变高时，传输过程中的路径损耗会增大，从而影响高频***的覆盖能力。为了能够有效地保证高频段NR***的覆盖，一种有效的技术方案便是基于大规模天线阵列(Massive MIMO)，以形成增益更大的赋形波束，克服传播损耗，确保***覆盖。The design goals of NR/5G systems include large-bandwidth communications in high-frequency bands (eg, frequency bands above 6 GHz). When the operating frequency becomes higher, the path loss in the transmission process will increase, thereby affecting the coverage capability of the high-frequency system. In order to effectively ensure the coverage of high-frequency NR systems, an effective technical solution is based on a massive antenna array (Massive MIMO) to form a shaped beam with greater gain, overcome propagation loss, and ensure system coverage.

毫米波天线阵列，由于波长更短，天线阵子间距以及孔径更小，可以让更多的物理天线阵子集成在一个有限大小的二维天线阵列中，同时，由于毫米波天线阵列的尺寸有限，从硬件复杂度、成本开销以及功耗等因素考虑，无法采用数字波束赋形方式，而是通常采用模拟波束赋形方式，在增强网络覆盖同时，也可以降低设备的实现复杂度。The millimeter-wave antenna array, due to the shorter wavelength, smaller antenna element spacing and smaller aperture, allows more physical antenna elements to be integrated in a limited-sized two-dimensional antenna array. At the same time, due to the limited size of the millimeter-wave antenna array, from Considering factors such as hardware complexity, cost overhead, and power consumption, digital beamforming cannot be used, but analog beamforming is usually used, which can reduce the complexity of device implementation while enhancing network coverage.

在2/3/4G典型***中，一个小区(扇区)使用一个较宽的波束(beam)来覆盖整个小区。因此在每个时刻，小区覆盖范围内的终端设备都有机会获得***分配的传输资源。In a typical 2/3/4G system, a cell (sector) uses a wider beam (beam) to cover the entire cell. Therefore, at each moment, the terminal equipment within the coverage of the cell has the opportunity to obtain the transmission resources allocated by the system.

NR/5G的多波束(Multi-beam)***通过不同的波束来覆盖整个小区，即每个波束覆盖一个较小的范围，通过时间上的扫描(sweeping)来实现多个波束覆盖整个小区的效果。NR/5G multi-beam (Multi-beam) system covers the entire cell through different beams, that is, each beam covers a small area, and achieves the effect of multiple beams covering the entire cell through time sweeping. .

图6给出了不使用波束赋形和使用波束赋形的示意图。图6中的左图是传统的、不使用波束赋形的场景，图6中的右图是使用波束赋形的场景。在左图中，网络侧使用一个宽的波束来覆盖整个小区，终端设1-5在任何时刻都可以接收到网络信号。于此相反，在右图中，网络侧使用较窄的波束，在不同的时刻(例如图中的时刻1至时刻4)使用不同波束来覆盖小区中的不同区域，例如在时刻1，网络侧通过波束1覆盖终端设备1所在的区域；在时刻2，网络侧通过波束2覆盖终端设备2所在的区域；在时刻3，网络侧通过波束3覆盖终端设备3和终端设备4所在的区域；在时刻4，网络侧通过波束4覆盖终端设备5所在的区域。Fig. 6 shows schematic diagrams without and with beamforming. The left image in Figure 6 is a conventional, non-beamforming scenario, and the right image in Figure 6 is a beamforming scenario. In the picture on the left, the network side uses a wide beam to cover the entire cell, and terminals 1-5 can receive network signals at any time. In contrast, in the figure on the right, the network side uses narrower beams, and uses different beams to cover different areas in the cell at different times (such as time 1 to time 4 in the figure), for example, at time 1, the network side Use beam 1 to cover the area where terminal device 1 is located; at time 2, the network side uses beam 2 to cover the area where terminal device 2 is located; at time 3, the network side uses beam 3 to cover the area where terminal device 3 and terminal device 4 are located; At time 4, the network side uses the beam 4 to cover the area where the terminal device 5 is located.

图6中的右图中，由于网络侧使用较窄的波束，发射能量可以更集中，因此可以覆盖更远的距离；同时由于波束较窄，每个波束只能覆盖小区中的部分区域，因此模拟波束赋形是“以时间换空间”。In the right diagram of Figure 6, since the network side uses narrower beams, the transmission energy can be more concentrated, so it can cover a longer distance; at the same time, because of the narrower beams, each beam can only cover part of the area in the cell, so Analog beamforming is "trading time for space".

模拟波束赋形不仅可以用于网络侧设备，也同样可以用于终端设备。同时，模拟波束赋形不仅可以用于信号的发送(称为发送波束)，同样也可以用于信号的接收(称为接收波束)。Analog beamforming can be used not only for network-side devices, but also for terminal devices. At the same time, analog beamforming can not only be used for signal transmission (called transmit beam), but also can be used for signal reception (called receive beam).

目前，不同的波束通过上面承载的不同的参考信号来进行识别。例如：一些不同波束上传输不同的同步信号块(SS/PBCH，SSB)，终端设备可以通过不同的SSB来分辨出不同的波束。再例如：一些不同的波束上传输不同的CSI-RS，终端设备可以通过CSI-RS或CSI-RS资源来识别出不同的波束。可见，参考信号和波束是对应的。Currently, different beams are identified by different reference signals carried on them. For example, different synchronization signal blocks (SS/PBCH, SSB) are transmitted on some different beams, and the terminal equipment can distinguish different beams through different SSBs. Another example: different CSI-RSs are transmitted on some different beams, and the terminal device can identify different beams through the CSI-RS or CSI-RS resources. It can be seen that the reference signal corresponds to the beam.

在一个多波束***中，物理下行控制信道(Physical Downlink Control Channel，PDCCH)和物理下行共享信道(Physical Downlink Shared Channel，PDSCH)可以通过不同的下行发送波束来传输。对于6G以下的通信***，终端设备一般没有模拟波束，因此采用全向天线(或者接近全向的天线)来接收基站使用不同下行发送波束发送的信号。对于毫米波的通信***，终端设备可能会有模拟波束，需要使用对应的下行接收波束去接收基站使用对应的下行发送波束发送的信号。此时，需要相应的波束指示信息(beam indication)来协助终端设备确定基站使用的发送波束的相关信息，或者终端设备使用的接收波束的相关信息。In a multi-beam system, a physical downlink control channel (Physical Downlink Control Channel, PDCCH) and a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) can be transmitted through different downlink transmission beams. For communication systems below 6G, terminal devices generally do not have analog beams, so omnidirectional antennas (or near-omnidirectional antennas) are used to receive signals sent by base stations using different downlink transmission beams. For the millimeter wave communication system, the terminal device may have an analog beam, and needs to use the corresponding downlink receiving beam to receive the signal sent by the base station using the corresponding downlink sending beam. At this time, corresponding beam indication information (beam indication) is needed to assist the terminal device in determining related information about the transmitting beam used by the base station, or related information about the receiving beam used by the terminal device.

在NR协议中，波束指示信息不是直接指示波束本身，而是通过信号之间的准共址(Quasi Co-Location，QCL)来进行指示。在终端设备侧，也是基于QCL假设接收相应的信道/信号。In the NR protocol, the beam indication information does not directly indicate the beam itself, but indicates it through Quasi Co-Location (QCL) between signals. On the side of the terminal device, the corresponding channel/signal is also assumed to be received based on the QCL.

下行传输的QCLQCL for downlink transmission

终端设备在进行信号接收时，为了提高接收性能，可以利用数据传输所对应的传输环境的特性来改进接收算法。例如可以利用信道的统计特性来优化信道估计器的设计和参数。在NR***中，数据传输所对应的这些特性通过QCL信息(QCL-Info)来表示。When the terminal device receives signals, in order to improve the receiving performance, it can use the characteristics of the transmission environment corresponding to the data transmission to improve the receiving algorithm. For example, the statistical properties of the channel can be used to optimize the design and parameters of the channel estimator. In the NR system, these characteristics corresponding to data transmission are represented by QCL information (QCL-Info).

下行传输如果来自不同的传输接收点(Transmission Reception Point，TRP)或天线面板(panel)或波束，则数据传输所对应的传输环境的特性可能也会有变化，因此在NR***中，网络侧在传输下行控制信道或数据信道，会通过传输配置指示(Transmission Configuration Indicator，TCI)状态将对应的QCL信息指示给终端设备。If the downlink transmission comes from different transmission reception points (Transmission Reception Point, TRP) or antenna panel (panel) or beam, the characteristics of the transmission environment corresponding to the data transmission may also change. Therefore, in the NR system, the network side is in When transmitting a downlink control channel or data channel, the corresponding QCL information will be indicated to the terminal device through a Transmission Configuration Indicator (TCI) state.

一个TCI状态的配置可以包含如下配置：The configuration of a TCI state can include the following configurations:

TCI状态标识，用于标识一个TCI状态；TCI status identifier, used to identify a TCI status;

QCL信息1； QCL information 1;

QCL信息2，该信息为可选的。 QCL information 2, this information is optional.

其中，对于上述QCL信息来说，一个QCL信息又包含如下信息：Among them, for the above-mentioned QCL information, a QCL information also includes the following information:

QCL类型配置，用于配置QCL类型，QCL类型可以是QCL type A，QCL typeB，QCL typeC或QCL typeD中的一个；QCL type configuration, used to configure QCL type, QCL type can be one of QCL type A, QCL typeB, QCL typeC or QCL typeD;

QCL参考信号配置，包括参考信号所在的小区标识，BWP标识以及参考信号的标识，其中，参考信号的标识可以是CSI-RS资源标识或SSB索引。The QCL reference signal configuration includes the cell identifier where the reference signal is located, the BWP identifier and the identifier of the reference signal, wherein the identifier of the reference signal may be a CSI-RS resource identifier or an SSB index.

如果QCL信息1和QCL信息2都配置了，这两个QCL信息中有至少一个QCL信息的QCL类型配置必须配置为QCL typeA，QCL typeB，QCL typeC中的一个，另一个QCL信息的QCL类型配置必须配置为QCL type D。If both QCL information 1 and QCL information 2 are configured, the QCL type configuration of at least one QCL information in the two QCL information must be configured as one of QCL typeA, QCL typeB, and QCL typeC, and the QCL type configuration of the other QCL information Must be configured as QCL type D.

不同QCL类型的定义如下表1所示：The definitions of different QCL types are shown in Table 1 below:

QCL类型QCL type	特性characteristic	作用effect
QCL type AQCL type A	多普勒偏移、多普勒扩展、平均时延、时延扩展Doppler shift, Doppler spread, mean delay, delay spread	获得信道估计信息Get Channel Estimation Information
QCL typeBQCL typeB	多普勒偏移、多普勒扩展Doppler shift, Doppler spread	获得信道估计信息Get Channel Estimation Information
QCL typeCQCL typeC	多普勒偏移、平均时延Doppler shift, average delay	获得测量信息get measurement information
QCL typeDQCL typeD	空间接收(Rx)参数Spatial Receive (Rx) Parameters	辅助波束赋形auxiliary beamforming

表1Table 1

对于TCI状态的配置，以下表2给出了其配置内容，其中，tci-StateId即为上述TCI状态标识，QCL-Info即为上述QCL信息。For the configuration of the TCI state, the configuration content is given in Table 2 below, where tci-StateId is the above-mentioned TCI state identifier, and QCL-Info is the above-mentioned QCL information.

表2Table 2

在NR***中，网络侧可以为下行信号或下行信道指示相应的TCI状态。In the NR system, the network side can indicate the corresponding TCI state for the downlink signal or downlink channel.

如果网络侧通过TCI状态配置目标下行信道或目标下行信号的QCL参考信号为SSB或CSI-RS资源，且QCL类型配置为QCL typeA，QCL typeB或QCL typeC，则终端设备可以假设所述目标下行信号与所述SSB或CSI-RS资源的大尺度参数是相同的，所述大尺度参数通过QCL类型配置来确定。If the network side configures the target downlink channel or the QCL reference signal of the target downlink signal as SSB or CSI-RS resources through the TCI state, and the QCL type is configured as QCL typeA, QCL typeB or QCL typeC, then the terminal device can assume the target downlink signal It is the same as the large-scale parameter of the SSB or CSI-RS resource, and the large-scale parameter is determined through QCL type configuration.

类似的，如果网络侧通过TCI状态配置目标下行信道或下行信号的QCL参考信号为SSB或CSI-RS资源，且QCL类型配置为QCL typeD，则终端设备可以采用与接收所述参考SSB或参考CSI-RS资源相同的接收波束，来接收所述目标下行信号。通常的，目标下行信道(或下行信号)与关联的SSB或CSI-RS资源在网络侧由同一个TRP或者同一个panel或者相同的波束来发送。如果两个下行信号或下行信道的传输TRP或传输panel或发送波束不同，通常会配置不同的TCI状态。Similarly, if the network side configures the QCL reference signal of the target downlink channel or downlink signal as SSB or CSI-RS resources through the TCI state, and the QCL type is configured as QCL typeD, then the terminal device can adopt and receive the reference SSB or reference CSI - a receiving beam with the same RS resource to receive the target downlink signal. Usually, the target downlink channel (or downlink signal) and the associated SSB or CSI-RS resource are sent by the same TRP or the same panel or the same beam on the network side. If the transmission TRP or transmission panel or transmission beam of two downlink signals or downlink channels are different, different TCI states are usually configured.

对于下行控制信道，可以通过RRC信令或者RRC信令加上MAC信令的方式来指示对应控制资源集(Control Resource Set，CORESET)的TCI状态。For the downlink control channel, the TCI state of the corresponding control resource set (Control Resource Set, CORESET) can be indicated through RRC signaling or RRC signaling plus MAC signaling.

对于下行数据信道，如图7所示，可用的TCI状态集合通过RRC信令来指示(如通过RRC信令指示N个候选的TCI状态，N为正整数)，并通过MAC信令来激活其中部分TCI状态(如通过MAC信令激活N个TCI状态中的K个TCI状态，K为大于等于1且小于等于N的正整数)，最后通过DCI中的TCI状态指示域从激活的TCI状态中指示一个或两个TCI状态，用于所述DCI调度的PDSCH。2个TCI状态的情况主要是针对多个TRP类似的场景。For the downlink data channel, as shown in Figure 7, the available TCI state set is indicated through RRC signaling (such as indicating N candidate TCI states through RRC signaling, N is a positive integer), and activated through MAC signaling Part of the TCI state (such as activating K TCI states in the N TCI states through MAC signaling, K is a positive integer greater than or equal to 1 and less than or equal to N), and finally through the TCI state indication field in the DCI from the activated TCI state Indicates one or two TCI states for the PDSCH scheduled by the DCI. The case of two TCI states is mainly for scenarios where multiple TRPs are similar.

在下行传输***中，PDCCH和PDSCH可以是时分传输的，如PDCCH和该PDCCH调度的PDSCH位于不同的时隙，PDSCH所用的发送波束是通过调度该PDSCH的DCI中指示的。终端设备通过检测该DCI，获取其中指示的波束信息，即可确定该DCI调度的PDSCH的波束信息，从而可以进行相应的数据接收。In the downlink transmission system, PDCCH and PDSCH can be transmitted in time division. For example, the PDCCH and the PDSCH scheduled by the PDCCH are located in different time slots, and the transmission beam used by the PDSCH is indicated by the DCI scheduling the PDSCH. By detecting the DCI and obtaining the beam information indicated therein, the terminal device can determine the beam information of the PDSCH scheduled by the DCI, so that corresponding data reception can be performed.

为了提升侧行传输***的传输速率，考虑在侧行传输***中使用毫米波频段，而在侧行毫米波传输***中，需要确定发送端的最优发送波束和/或接收端的最优接收波束。在确定发送端最优发送波束的过程中，如图8所示，通常采用如下的方式：发送端使用不同的波束轮流发送侧行CSI-RS(图8以4个波束轮流发送侧行CSI-RS为例)，不同的发送波束对应不同的侧行CSI-RS资源，接收端使用相同的波束(图8以波束2为例)分别接收发送端发送的多个侧行CSI-RS，并且对检测到的侧行CSI-RS进行测量。作为一种方式，接收端可以根据侧行CSI-RS的测量结果选取最优的侧行CSI-RS(如信号质量最好的侧行CSI-RS)并将其对应的侧行CSI-RS资源标识反馈给发送端，该侧行CSI-RS资源对应的发送波束即是对接收端最优的发送波束。作为另一种方式，接收端向发送端上报多个侧行CSI-RS的侧行CSI-RS资源标识及其对应的测量结果，发送端根据上报信息在多个侧行CSI-RS中选取最优的侧行CSI-RS(如信号质量最好的侧行CSI-RS)，将相应侧行CSI-RS资源对应的发送波束作为接收端最优的发送波束。这里，当接收端向发送端反馈多个侧行CSI-RS的相关信息时，发送端可以认为所述多个侧行CSI-RS对应的发送波束都是可用的发送波束。而后，发送端将该目标发送波束告知接收端，如向接收端指示一个TCI状态，该TCI状态的QCL参考信号为该目标侧行CSI-RS，QCL类型为QCL TypeD。接收端根据TCI状态获知该目标发送波束，即可使用与该目标发送波束对应的接收波束接收发送端发送的侧行数据。进一步，如果发送端可以判断波束失效，则发送端会重新选取发送波束，可选的，发送端可以从所述多个侧行CSI-RS中选取除上述目标侧行CSI-RS之外的其他的侧行CSI-RS作为新的目标侧行CSI-RS，并将其对应的发送波束作为新的目标发送波束。In order to increase the transmission rate of the sidewalk transmission system, consider using the millimeter wave frequency band in the sidewalk transmission system, and in the sidewalk millimeter wave transmission system, it is necessary to determine the optimal transmit beam at the transmitter and/or the optimal receive beam at the receiver. In the process of determining the optimal transmission beam at the sending end, as shown in Figure 8, the following method is usually adopted: the sending end uses different beams to send side-row CSI-RS in turn (in Figure 8, four beams send side-row CSI-RS in turn RS as an example), different transmit beams correspond to different side CSI-RS resources, and the receiving end uses the same beam (beam 2 is used as an example in Figure 8) to receive multiple side CSI-RS sent by the transmitting end respectively, and for The detected side row CSI-RS is measured. As a way, the receiving end can select the optimal side CSI-RS (such as the side CSI-RS with the best signal quality) according to the measurement results of the side CSI-RS and assign its corresponding side CSI-RS resource The identifier is fed back to the sending end, and the sending beam corresponding to the lateral CSI-RS resource is the optimal sending beam for the receiving end. As another way, the receiving end reports the side row CSI-RS resource identifiers of the multiple side row CSI-RSs and the corresponding measurement results to the sending end, and the sending end selects the best resource among the multiple side row CSI-RSs according to the reported information. For an optimal sidelink CSI-RS (for example, a sidelink CSI-RS with the best signal quality), the transmission beam corresponding to the corresponding sidelink CSI-RS resource is used as the optimal transmission beam at the receiving end. Here, when the receiving end feeds back information about multiple side CSI-RSs to the transmitting end, the transmitting end may consider that the transmission beams corresponding to the multiple side CSI-RSs are available transmission beams. Then, the transmitting end notifies the receiving end of the target transmission beam, such as indicating a TCI state to the receiving end, the QCL reference signal of the TCI state is the target side CSI-RS, and the QCL type is QCL TypeD. The receiving end knows the target sending beam according to the TCI state, and can use the receiving beam corresponding to the target sending beam to receive the sidelink data sent by the sending end. Further, if the sending end can determine that the beam is invalid, the sending end will re-select the sending beam. Optionally, the sending end can select other than the above-mentioned target side CSI-RS from the multiple side CSI-RSs. The sideline CSI-RS of the new target sideline CSI-RS, and its corresponding transmission beam is used as a new target transmission beam.

上述方案中，发送端可以通过配置TCI状态的方式向接收端指示参考信号和发送波束之间的对应关系。其中，TCI状态的配置可以包含如下配置：TCI状态标识，用于指示或标识一个TCI状态；QCL信息。其中，QCL信息又包含如下信息：In the above solution, the transmitting end may indicate to the receiving end the corresponding relationship between the reference signal and the transmitting beam by configuring the TCI state. Wherein, the configuration of the TCI status may include the following configurations: a TCI status identifier, used to indicate or identify a TCI status; QCL information. Among them, the QCL information also includes the following information:

QCL参考信号配置，包括参考信号所在的小区标识，BWP标识以及参考信号的标识，其中，该参考信号可以包括如下中的至少一种：侧行CSI-RS、PSCCH DMRS、PSSCH DMRS、PT-RS。QCL reference signal configuration, including the cell identifier where the reference signal is located, the BWP identifier and the identifier of the reference signal, wherein the reference signal may include at least one of the following: side row CSI-RS, PSCCH DMRS, PSSCH DMRS, PT-RS .

上述四种QCL类型的定义可以参照前述表1所示，其中，QCL typeD指示接收端使用与接收该QCL类型关联的参考信号相同的空域接收参数(或空域接收滤波器)进行接收；或表示发送端使用与该QCL类型关联的参考信号相同的空域发送参数(或空域发送滤波器)进行发送。The definitions of the above four QCL types can refer to the aforementioned Table 1, wherein, QCL typeD indicates that the receiving end uses the same spatial receiving parameters (or spatial receiving filters) as the reference signals associated with receiving the QCL type to receive; or indicates sending The end uses the same spatial domain transmission parameters (or spatial domain transmission filter) as the reference signal associated with the QCL type to transmit.

当发送端选取了发送波束，需要将该信息发送给接收端，以辅助接收端进行正确的数据接收。但是在侧行传输***中，PSCCH与其调度的PSSCH位于相同的时隙，接收端在检测PSCCH和 PSSCH时，需要先将该时隙内的数据接收下来，然后在进行PSCCH检测，以及PSSCH检测。而接收端在检测PSCCH之前无法获知发送端使用的波束信息，也就无法确定相应的接收波束进行接收，此时，发送端如何指示发送波束是需要解决的问题。另外，在发送端选取发送波束之前，该如何与接收端进行侧行通信，或如何确定发送端使用的发送波束也是需要解决的问题。为此，提出了本申请实施例的以下技术方案。When the sending end selects the sending beam, it needs to send the information to the receiving end to assist the receiving end in correct data reception. However, in the sidelink transmission system, the PSCCH and the scheduled PSSCH are located in the same time slot. When the receiving end detects the PSCCH and PSSCH, it needs to receive the data in the time slot first, and then perform PSCCH detection and PSSCH detection. However, the receiving end cannot know the beam information used by the transmitting end before detecting the PSCCH, and thus cannot determine the corresponding receiving beam for receiving. At this time, how the transmitting end indicates the transmitting beam is a problem that needs to be solved. In addition, before the sending end selects a sending beam, how to communicate sideways with the receiving end, or how to determine the sending beam used by the sending end is also a problem that needs to be solved. To this end, the following technical solutions of the embodiments of the present application are proposed.

需要说明的是，本申请实施例的技术方案可以应用于侧行传输***。It should be noted that the technical solutions of the embodiments of the present application can be applied to a lateral transmission system.

为便于理解本申请实施例的技术方案，以下通过具体实施例详述本申请的技术方案。以上相关技术作为可选方案与本申请实施例的技术方案可以进行任意结合，其均属于本申请实施例的保护范围。本申请实施例包括以下内容中的至少部分内容。In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific examples. As optional solutions, the above related technologies may be combined with the technical solutions of the embodiments of the present application in any combination, and all of them belong to the protection scope of the embodiments of the present application. The embodiment of the present application includes at least part of the following content.

需要说明的是，本申请实施例中关于“空域发送滤波器”的描述也可以替换为“发送波束”或者“空域发送参数”，关于“空域接收滤波器”的描述也可以替换为“接收波束”或者“空域接收参数”，另外，“空域传输滤波器”包括“空域发送滤波器”和/后“空域接收滤波器”。It should be noted that the description of "spatial transmission filter" in the embodiment of the present application can also be replaced by "transmission beam" or "spatial transmission parameter", and the description of "spatial reception filter" can also be replaced by "reception beam ” or “spatial domain reception parameters”, in addition, “spatial domain transmission filter” includes “spatial domain transmission filter” and/or post “spatial domain reception filter”.

图9是本申请实施例提供的侧行传输方法的流程示意图一，如图9所示，所述侧行传输方法包括以下步骤：Fig. 9 is a first schematic flow diagram of the lateral transmission method provided by the embodiment of the present application. As shown in Fig. 9, the lateral transmission method includes the following steps:

步骤901：第一终端设备使用第一缺省空域发送滤波器向第二终端设备发送第一侧行传输，和/或使用第一缺省空域接收滤波器接收所述第二终端设备发送的第二侧行传输。Step 901: The first terminal device uses the first default airspace transmit filter to send the first sidelink transmission to the second terminal device, and/or uses the first default airspace receive filter to receive the first sidelink transmission sent by the second terminal device. Two side row transmission.

本申请实施例中，第一终端设备可以使用第一缺省空域发送滤波器和/或第一缺省空域接收滤波器与第二终端设备进行侧行传输。在一些可选实施方式中，所述第一缺省空域发送滤波器和所述第一缺省空域接收滤波器具有关联关系或者说具有对应关系，这种关联关系或者对应关系体现在：如果第一终端设备进行发送时使用的空域发送滤波器是所述第一缺省空域发送滤波器，那么第一终端设备进行接收时使用的空域接收滤波器就会是所述第一缺省空域接收滤波器。或者，如果第一终端设备进行接收时使用的空域接收滤波器就会是所述第一缺省空域接收滤波器，那么第一终端设备进行发送时使用的空域发送滤波器是所述第一缺省空域发送滤波器。In this embodiment of the present application, the first terminal device may use the first default airspace transmit filter and/or the first default airspace receive filter to perform sidelink transmission with the second terminal device. In some optional implementation manners, the first default spatial domain transmit filter and the first default spatial domain receive filter have an association relationship or a correspondence relationship, and this association relationship or correspondence relationship is reflected in: if the first The spatial domain transmission filter used by a terminal device when transmitting is the first default spatial domain transmission filter, then the spatial domain reception filter used by the first terminal device when receiving will be the first default spatial domain reception filter device. Or, if the spatial domain receiving filter used by the first terminal device when receiving is the first default spatial domain receiving filter, then the spatial domain transmitting filter used by the first terminal device when transmitting is the first default default spatial domain receiving filter. Spatial space transmit filter.

以下结合不同的方案对所述第一侧行传输和/或所述第二侧行传输的实现进行说明。Implementation of the first side transmission and/or the second side transmission will be described below in conjunction with different solutions.

方案一Option One

本申请实施例中，所述第一终端设备使用第一缺省空域发送滤波器向第二终端设备发送侧行链路建立请求消息，所述侧行链路建立请求消息用于请求建立所述第一终端设备与所述第二终端设备之间的单播链路。In this embodiment of the present application, the first terminal device uses the first default airspace transmission filter to send a sidelink establishment request message to the second terminal device, and the sidelink establishment request message is used to request establishment of the A unicast link between the first terminal device and the second terminal device.

进一步，可选地，所述第一终端设备使用第一缺省空域接收滤波器接收所述第二终端设备发送的侧行链路建立接受消息，所述侧行链路建立接受消息用于指示所述第二终端设备接受所述第一终端设备的侧行链路建立请求；或者，所述第一终端设备使用第一缺省空域接收滤波器接收所述第二终端设备发送的侧行链路建立拒绝消息，所述侧行链路建立拒绝消息用于指示所述第二终端设备拒绝所述第一终端设备的侧行链路建立请求。Further, optionally, the first terminal device uses the first default airspace receiving filter to receive the sidelink establishment acceptance message sent by the second terminal equipment, and the sidelink establishment acceptance message is used to indicate The second terminal device accepts the sidelink establishment request of the first terminal device; or, the first terminal device uses the first default airspace receiving filter to receive the sidelink link sent by the second terminal device. A path establishment rejection message, where the sidelink establishment rejection message is used to instruct the second terminal device to reject the sidelink establishment request of the first terminal device.

方案二Option II

本申请实施例中，所述第一终端设备使用第一缺省空域发送滤波器向第二终端设备发送侧行RRC重配置消息，所述侧行RRC重配置消息用于重配置所述第一终端设备与所述第二终端设备之间的侧行RRC连接。In this embodiment of the present application, the first terminal device uses the first default airspace transmission filter to send a side RRC reconfiguration message to the second terminal device, and the side RRC reconfiguration message is used to reconfigure the first A side RRC connection between the terminal device and the second terminal device.

进一步，可选地，所述第一终端设备使用第一缺省空域接收滤波器接收所述第二终端设备发送的侧行RRC重配置完成消息，所述侧行RRC重配置完成消息用于指示所述第一终端设备与所述第二终端设备之间的侧行RRC连接重配置完成；或者，所述第一终端设备使用第一缺省空域接收滤波器接收所述第二终端设备发送的侧行RRC重配置失败消息，所述侧行RRC重配置失败消息用于指示所述第一终端设备与所述第二终端设备之间的侧行RRC连接重配置失败。Further, optionally, the first terminal device uses the first default airspace reception filter to receive the side RRC reconfiguration complete message sent by the second terminal device, and the side RRC reconfiguration complete message is used to indicate The side RRC connection reconfiguration between the first terminal device and the second terminal device is completed; or, the first terminal device uses the first default airspace receiving filter to receive the message sent by the second terminal device A side RRC reconfiguration failure message, where the side RRC reconfiguration failure message is used to indicate that the side RRC connection reconfiguration between the first terminal device and the second terminal device fails.

在一些可选实施方式中，若所述第一终端设备接收到侧行RRC重配置失败消息，则所述第一终端设备使用所述第一缺省空域发送滤波器向第二终端设备发送单播链路连接请求消息，所述单播链路连接请求消息用于请求重新建立单播链路。In some optional implementation manners, if the first terminal device receives a sidelink RRC reconfiguration failure message, the first terminal device uses the first default airspace transmission filter to send a single message to the second terminal device. A broadcast link connection request message, where the unicast link connection request message is used to request to re-establish the unicast link.

方案三third solution

本申请实施例中，所述第一终端设备使用第一缺省空域发送滤波器向第二终端设备发送携带第一指示信息的第一侧行传输，所述第一指示信息用于指示进行所述第一终端设备的空域发送滤波器的选取过程和/或所述第二终端设备的空域接收滤波器的选取过程。In this embodiment of the present application, the first terminal device uses the first default airspace transmission filter to send the first sidelink transmission carrying the first indication information to the second terminal device, and the first indication information is used to instruct the The selection process of the spatial domain transmission filter of the first terminal device and/or the selection process of the spatial domain reception filter of the second terminal device.

情况1)所述第一指示信息指示进行所述第一终端设备的空域发送滤波器的选取过程的情况下，所述第一终端设备使用多个空域发送滤波器向所述第二终端设备发送参考信号；所述第一终端设备接收所述第二终端设备发送的针对所述参考信号测量的反馈信息；所述第一终端设备基于所述反馈信息从所述多个空域发送滤波器中选取一个空域发送滤波器作为目标空域发送滤波器，或者基于所述反馈信息确定目标空域发送滤波器。Situation 1) When the first indication information indicates that the selection process of the airspace transmission filter of the first terminal device is performed, the first terminal equipment uses multiple airspace transmission filters to transmit to the second terminal equipment Reference signal; the first terminal device receives feedback information sent by the second terminal device for the measurement of the reference signal; the first terminal device selects from the plurality of airspace transmission filters based on the feedback information One spatial domain transmission filter is used as the target spatial domain transmission filter, or the target spatial domain transmission filter is determined based on the feedback information.

这里，第一终端设备作为发送端，第二终端设备作为接收端，第一终端设备使用多个空域发送滤波器向第二终端设备发送参考信号；第二终端设备使用相同的空域接收滤波器接收参考信号并对参考信号进行测量，向第一终端设备发送针对参考信号测量的反馈信息；第一终端设备基于所述反馈信息从多个空域发送滤波器中选取一个空域发送滤波器作为目标空域发送滤波器，或者基于所述反馈信息确定目标空域发送滤波器。可选地，第一终端设备可以使用第一缺省空域接收滤波器接收第二终端设备发送的反馈信息。Here, the first terminal device is used as the transmitting end, and the second terminal device is used as the receiving end. The first terminal device uses multiple spatial domain transmission filters to send reference signals to the second terminal device; the second terminal device uses the same spatial domain receiving filter to receive reference signals. Refer to the signal and measure the reference signal, and send feedback information for the reference signal measurement to the first terminal device; based on the feedback information, the first terminal device selects a spatial transmission filter from a plurality of spatial transmission filters as the target spatial transmission filter filter, or determine a target airspace transmission filter based on the feedback information. Optionally, the first terminal device may use the first default airspace receiving filter to receive the feedback information sent by the second terminal device.

上述方案中，可选地，所述参考信号为侧行CSI-RS。需要说明的是，所述参考信号不限于是侧行CSI-RS，还可以是其他类型的信号，例如侧行SSB。In the above solution, optionally, the reference signal is a side row CSI-RS. It should be noted that the reference signal is not limited to the side CSI-RS, and may also be other types of signals, such as the side SSB.

以参考信号为侧行CSI-RS为例，如图8所示，发送端(即第一终端设备)使用4个不同的发送波束(即空域发送滤波器)轮流发送侧行CSI-RS，不同的发送波束对应不同的侧行CSI-RS资源，接收端(即第二终端设备)使用波束2(即空域接收滤波器)分别接收发送端发送的多个侧行CSI-RS，并且对检测到的侧行CSI-RS进行测量。作为一种方式，接收端可以根据侧行CSI-RS的测量结果选取最优的侧行CSI-RS(如信号质量最好的侧行CSI-RS)并向发送端上报反馈信息(例如包括该最优的侧行CSI-RS对应的侧行CSI-RS资源标识以及对应的测量结果)，发送端根据反馈信息可以确定该侧行CSI-RS资源对应的发送波束即是对接收端最优的发送波束(即目标空域发送滤波器)。作为另一种方式，接收端向发送端上报反馈信息(包括多个侧行CSI-RS的侧行CSI-RS资源标识及其对应的测量结果)，发送端根据反馈信息在多个侧行CSI-RS中选取最优的侧行CSI-RS(如信号质量最好的侧行CSI-RS)，确定该侧行CSI-RS的侧行CSI-RS资源对应的发送波束即是接收端最优的发送波束(即目标空域发送滤波器)。Taking the reference signal as the sideline CSI-RS as an example, as shown in Figure 8, the transmitting end (i.e., the first terminal device) uses four different transmission beams (i.e., air domain transmission filters) to transmit the sideline CSI-RS in turn, with different The sending beams of the corresponding to different side CSI-RS resources, the receiving end (that is, the second terminal device) uses beam 2 (that is, the spatial domain receiving filter) to receive the multiple side CSI-RS sent by the sending end, and detects The side row CSI-RS is measured. As a way, the receiving end can select the optimal side CSI-RS (such as the side CSI-RS with the best signal quality) according to the measurement results of the side CSI-RS and report the feedback information to the sending end (for example, including the The optimal side CSI-RS corresponding to the side CSI-RS resource identifier and the corresponding measurement results), the transmitting end can determine that the transmitting beam corresponding to the side CSI-RS resource is the optimal one for the receiving end according to the feedback information Transmit beam (i.e. target airspace transmit filter). As another way, the receiving end reports feedback information (including side CSI-RS resource identifiers of multiple side CSI-RSs and their corresponding measurement results) to the sending end, and the sending end uses the feedback information in multiple side CSI-RS -Select the optimal side CSI-RS from the RS (such as the side CSI-RS with the best signal quality), and determine that the transmission beam corresponding to the side CSI-RS resource of the side CSI-RS is the optimal one at the receiving end The transmit beam (ie, the target airspace transmit filter).

情况2)所述第一指示信息指示进行所述第二终端设备的空域接收滤波器的选取过程的情况下，所述第一终端设备使用相同的空域发送滤波器向所述第二终端设备发送参考信号，所述参考信号被所述第二终端设备使用多个空域接收滤波器接收并测量，所述参考信号的测量结果用于所述第二终端设备从所述多个空域接收滤波器中选取一个空域接收滤波器作为目标空域接收滤波器。Situation 2) In the case where the first indication information indicates that the selection process of the spatial domain receiving filter of the second terminal device is performed, the first terminal device uses the same spatial domain transmitting filter to transmit to the second terminal device a reference signal, the reference signal is received and measured by the second terminal device using a plurality of spatial receiving filters, and the measurement result of the reference signal is used by the second terminal device to obtain the information from the plurality of spatial receiving filters Select a spatial domain receiver filter as the target spatial domain receiver filter.

这里，第二终端设备选取目标空域接收滤波器的过程与第一终端设备选取目标空域发送滤波器的过程是类似的，可以参照第一终端设备选取目标空域发送滤波器的过程进行理解。Here, the process for the second terminal device to select the target airspace receive filter is similar to the process for the first terminal device to select the target airspace transmit filter, which can be understood by referring to the process for the first terminal device to select the target airspace transmit filter.

方案四Option four

本申请实施例中，所述第一终端设备使用第一缺省空域发送滤波器向第二终端设备发送携带第二指示信息的第一侧行传输，所述第二指示信息用于确定所述第一终端设备选取的目标空域发送滤波器，或者，所述第二指示信息用于指示所述第一终端设备在第一时刻之后使用所述目标空域发送滤波器进行侧行传输。In this embodiment of the present application, the first terminal device uses the first default airspace transmission filter to send the first sidelink transmission carrying the second indication information to the second terminal device, and the second indication information is used to determine the The target airspace transmit filter selected by the first terminal device, or the second indication information is used to instruct the first terminal device to use the target airspace transmit filter to perform sidelink transmission after the first moment.

在一些可选实施方式中，所述第一时刻基于第一时长确定，所述第一时长是根据预定义信息确定的，或者，所述第一时长是根据预配置信息确定的，或者，所述第一时长是根据网络配置信息确定的，或者，所述第一时长是根据所述第一终端设备发送的第三指示信息确定的。In some optional implementation manners, the first moment is determined based on a first duration, and the first duration is determined according to predefined information, or, the first duration is determined according to preconfigured information, or, the The first duration is determined according to network configuration information, or the first duration is determined according to third indication information sent by the first terminal device.

例如，通过协议规定第一时长在15kHz子载波间隔时为对应4个时域符号的时长。又例如，在预配置或网络配置的资源池参数中包括指示信息，该指示信息用于配置第一时长。又例如，所述第一终端设备向所述第二终端设备发送第三指示信息，该第三指示信息用于指示第一时长为2个时隙。For example, it is stipulated by the agreement that the first duration is a duration corresponding to 4 time-domain symbols when the subcarrier interval is 15 kHz. For another example, the pre-configured or network-configured resource pool parameters include indication information, where the indication information is used to configure the first duration. In another example, the first terminal device sends third indication information to the second terminal device, where the third indication information is used to indicate that the first duration is 2 time slots.

在一些实施方式中，所述第一终端设备同时发送所述第二指示信息和所述第三指示信息，即在所述第一侧行传输中包括所述第二指示信息和所述第三指示信息。In some implementation manners, the first terminal device sends the second indication information and the third indication information at the same time, that is, the first sidelink transmission includes the second indication information and the third indication information. Instructions.

在一些实施方式中，所述第三指示信息承载在SCI、MAC CE或PC5-RRC信令中。进一步，可选地，基于所述第一侧行传输的结束位置确定第二时刻，所述第一时刻和所述第二时刻之间的时间间隔大于或等于所述第一时长，所述第二时刻位于所示第一时刻之前。例如：第二时刻为第一侧行传输的结束位置对应的时刻，第一时刻位于第二时刻之后且距离第二时刻的时间间隔大于或等于第一时长。In some implementation manners, the third indication information is carried in SCI, MAC CE or PC5-RRC signaling. Further, optionally, the second moment is determined based on the end position of the first lateral transmission, the time interval between the first moment and the second moment is greater than or equal to the first duration, and the second The second moment is located before the first moment shown. For example: the second moment is the moment corresponding to the end position of the first lateral transmission, the first moment is located after the second moment and the time interval from the second moment is greater than or equal to the first duration.

在一些实施方式中，基于所述第一侧行传输的结束位置确定第二时刻，根据所述第二时刻和所述第一时长确定所述第一时刻，例如，第一时刻位于第二时刻之后且距离第二时刻的时间间隔大于或等于第一时长。In some implementations, the second moment is determined based on the end position of the first lateral transmission, and the first moment is determined according to the second moment and the first duration, for example, the first moment is located at the second moment After that, the time interval from the second moment is greater than or equal to the first duration.

在一些可选实施方式中，所述第一终端设备在所述第一时刻和所述第二时刻之间的时间间隔期间使用所述第一缺省空域发送滤波器进行侧行传输。In some optional implementation manners, the first terminal device uses the first default airspace transmit filter to perform sidelink transmission during a time interval between the first moment and the second moment.

这里，可选地，所述第一侧行传输的结束位置可以有以下定义：Here, optionally, the end position of the first sideline transmission may have the following definition:

所述第一侧行传输的结束位置对应于所述第一侧行传输所在时隙的结束位置；或者，The end position of the first sideline transmission corresponds to the end position of the time slot where the first sideline transmission is located; or,

所述第一侧行传输的结束位置对应于所述第一侧行传输占据的最后一个时域符号的结束位置；或者，The end position of the first side row transmission corresponds to the end position of the last time domain symbol occupied by the first side row transmission; or,

所述第一侧行传输的结束位置对应于所述第一侧行传输调度的第三侧行传输占据的最后一个时域符号的结束位置。The end position of the first sideline transmission corresponds to the end position of the last time-domain symbol occupied by the third sideline transmission scheduled by the first sideline transmission.

作为一种可选的情况，若所述第二指示信息携带在第一阶SCI中，则所述第一侧行传输的结束位置对应于PSCCH的最后一个时域符号的结束位置，或者对应于所述PSCCH调度的PSSCH的最后一个时域符号的结束位置。其中，所述第一阶SCI承载于所述PSCCH中。As an optional situation, if the second indication information is carried in the first-order SCI, the end position of the first sidelink transmission corresponds to the end position of the last time domain symbol of the PSCCH, or corresponds to The end position of the last time domain symbol of the PSSCH scheduled by the PSCCH. Wherein, the first-order SCI is carried in the PSCCH.

作为一种可选的情况，若所述第二指示信息承载在第二阶SCI中，则所述第一侧行传输的结束位置对应于所述第二阶SCI的最后一个时域符号的结束位置，或者对应于PSCCH调度的PSSCH的最后一个时域符号的结束位置。其中，所述PSCCH是与所述第二阶SCI相关联的PSCCH，即所述PSCCH与所述第二阶SCI同时传输，并且都携带与所述PSSCH相关的参数。As an optional situation, if the second indication information is carried in the second-order SCI, the end position of the first sideline transmission corresponds to the end of the last time-domain symbol of the second-order SCI position, or the end position of the last time-domain symbol of the PSSCH corresponding to the PSCCH scheduling. Wherein, the PSCCH is a PSCCH associated with the second-order SCI, that is, the PSCCH and the second-order SCI are transmitted simultaneously, and both carry parameters related to the PSSCH.

作为一种可选的情况，若所述第二指示信息承载在媒体接入控制(Media Access Control，MAC)控制单元(Control Element，CE)中，则所述第一侧行传输的结束位置对应于承载所述MAC CE的PSSCH的最后一个时域符号的结束位置。As an optional situation, if the second indication information is carried in a media access control (Media Access Control, MAC) control element (Control Element, CE), the end position of the first sideline transmission corresponds to at the end of the last time domain symbol of the PSSCH carrying the MAC CE.

作为一种可选的情况，若所述第二指示信息承载在PC5-RRC信令中，则所述第一侧行传输的结束位置对应于承载所述PC5-RRC信令的PSSCH的最后一个时域符号的结束位置。As an optional situation, if the second indication information is carried in PC5-RRC signaling, the end position of the first sideline transmission corresponds to the last PSSCH carrying the PC5-RRC signaling The end position of the time domain symbol.

在一些可选实施方式中，若所述第二指示信息承载在第一阶SCI、第二阶SCI或MAC CE中，所述第一终端设备向第二终端设备发送携带所述第二指示信息的第一侧行传输时激活侧行反馈。In some optional implementation manners, if the second indication information is carried in the first-order SCI, the second-order SCI or the MAC CE, the first terminal device sends a message carrying the second indication information to the second terminal device. Sidetrack feedback is activated during the first sidetrack transmission.

进一步，可选地，所述第一侧行传输的起始位置用于确定第二时刻，所述第一时刻和所述第二时刻之间的时间间隔大于或等于所述第一时长，所述第二时刻位于所示第一时刻之前。例如：第二时刻为第一侧行传输的起始位置对应的时刻，第一时刻位于第二时刻之后且距离第二时刻的时间间隔大于或等于第一时长。Further, optionally, the starting position of the first lateral transmission is used to determine a second moment, and the time interval between the first moment and the second moment is greater than or equal to the first duration, so The second instant is located before the first instant. For example: the second moment is the moment corresponding to the starting position of the first lateral transmission, the first moment is located after the second moment and the time interval from the second moment is greater than or equal to the first duration.

这里，可选地，所述第一侧行传输的起始位置可以有以下定义：Here, optionally, the starting position of the first sideline transmission may be defined as follows:

所述第一侧行传输的起始位置对应于所述第一侧行传输所在时隙的起始位置；或者，The starting position of the first sidelink transmission corresponds to the starting position of the time slot where the first sidelink transmission is located; or,

所述第一侧行传输的起始位置对应于所述第一侧行传输的第一个时域符号的起始位置；或者，The starting position of the first side row transmission corresponds to the starting position of the first time domain symbol of the first side row transmission; or,

所述第一侧行传输的起始位置对应于所述第一侧行传输调度的第三侧行传输的第一个时域符号的起始位置。The starting position of the first sidelink transmission corresponds to the starting position of the first time-domain symbol of the third sidelink transmission scheduled by the first sidelink transmission.

在一些可选实施方式中，所述第一终端设备确定当前波束失效的情况下，使用第一缺省空域发送滤波器向第二终端设备发送携带第二指示信息的第一侧行传输。In some optional implementation manners, when the first terminal device determines that the current beam is invalid, it uses the first default airspace transmission filter to send the first sidelink transmission carrying the second indication information to the second terminal device.

在一些实施方式中，所述第一终端设备确定当前波束(记为第一波束)失效的情况下需要进行波束切换，选取新的可用波束(记为第二波束)，此时，第一终端设备需要向第二终端设备发送第二指示信息，在该第二指示信息中携带第二波束的指示信息；由于第一波束失效，因此第一终端设备无法使用该第一波束进行侧行传输，在发送第二指示信息时，可以使用第一缺省发送波束发送该第二指示信息。In some embodiments, when the first terminal device determines that the current beam (denoted as the first beam) fails, beam switching is required, and a new available beam (denoted as the second beam) is selected. At this time, the first terminal The device needs to send second indication information to the second terminal device, and the second indication information carries the indication information of the second beam; since the first beam fails, the first terminal device cannot use the first beam for sidelink transmission, When sending the second indication information, the second indication information may be sent using the first default sending beam.

这里，可选地，所述第一终端设备确定当前波束失效，可以通过以下方式来实现：所述第一终端设备通过第一缺省空域接收滤波器接接收所述第二终端设备发送的第四指示信息，所述第四指示信息用于指示当前波束失效；所述第一终端设备基于所述第四指示信息确定当前波束失效。Here, optionally, the first terminal device determines that the current beam is invalid, which may be implemented in the following manner: the first terminal device receives the first default signal received by the second terminal device through the first default airspace receiving filter. Four indication information, where the fourth indication information is used to indicate that the current beam is invalid; the first terminal device determines that the current beam is invalid based on the fourth indication information.

方案五Option five

本申请实施例中，所述第一终端设备确定当前单播链路失效的情况下，使用第一缺省空域发送滤波器向第二终端设备发送单播链路连接请求消息，所述单播链路连接请求消息用于请求建立单播链路。In this embodiment of the present application, when the first terminal device determines that the current unicast link fails, it uses the first default airspace transmission filter to send a unicast link connection request message to the second terminal device, and the unicast The Link Connection Request message is used to request the establishment of a unicast link.

需要说明的是，上述方案一至方案五可以独立实施，也可以两个或更多个结合在一起来实施。It should be noted that the above schemes 1 to 5 can be implemented independently, or two or more can be implemented in combination.

本申请实施例中，所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器可以理解为所述第一终端设备默认使用(也即缺省使用)的空域发送滤波器和/或空域接收滤波器；或者，所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器是所述第一终端设备和所述第二终端设备建立单播链路前或单播链路失效(即无线链路失效(Radio Link Failure，RLF))后所使用的空域发送滤波器和/或空域接收滤波器；或者，所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器是所述第一终端设备和所述第二终端设备之间进行侧行RRC重配置时所使用的空域发送滤波器和/或空域接收滤波器；或者，所述第一缺省空域发送滤波器是所述第一终端设备获取最优发送波束(即目标空域发送滤波器)前所使用的空域发送滤波器；或者，所述第一缺省空域发送滤波器是所述第一终端设备发送用于指示启动发送波束选取过程或接收波束选取过程的指示信息时所使用的空域发送滤波器；或者，所述第一缺省空域发送滤波器是所述第一终端设备发送用于指示选取的目标空域发送滤波器的指示信息时所使用的空域发送滤波器；或者，所述第一缺省空域发送滤波器是所述第一终端设备通过波束选取过程选取的目标空域发送滤波器发生波束失效的情况下所使用的空域发送滤波器；或者，所述第一缺省空域发送滤波器是所述第一终端设备发送用于指示波束切换的指示信息时所使用的空域发送滤波器。In this embodiment of the present application, the first default airspace transmission filter and/or the first default airspace reception filter can be understood as the airspace transmission filter used by default (that is, used by default) by the first terminal device. filter and/or spatial receiving filter; or, the first default spatial receiving filter and/or the first default spatial receiving filter is established by the first terminal device and the second terminal device The airspace transmit filter and/or airspace receive filter used before the unicast link or after the unicast link fails (i.e. radio link failure (RLF)); or, the first default airspace The transmit filter and/or the first default airspace receive filter is an airspace transmit filter and/or airspace transmit filter and/or airspace used when sidelink RRC reconfiguration is performed between the first terminal device and the second terminal device receiving filter; or, the first default airspace transmit filter is the airspace transmit filter used before the first terminal device obtains the optimal transmit beam (that is, the target airspace transmit filter); or, the first default A default airspace transmission filter is the airspace transmission filter used when the first terminal device sends the indication information for instructing to start the transmission beam selection process or the reception beam selection process; or, the first default airspace transmission filter The filter is the airspace transmission filter used when the first terminal device sends the indication information for indicating the selected target airspace transmission filter; or, the first default airspace transmission filter is the first terminal device The airspace transmission filter used by the target airspace transmission filter selected by the device through the beam selection process when the beam fails; or, the first default airspace transmission filter is the first terminal device sending to indicate the beam Spatial send filter to use when switching indication messages.

在一些实施方式中，所述第一缺省空域发送滤波器根据所述第一终端设备进行广播通信时使用的空域发送滤波器确定；所述第一缺省空域接收滤波器根据所述第一终端设备接收其他终端设备以广播通信方式发送的侧行数据时使用的空域接收滤波器确定。In some embodiments, the first default airspace transmission filter is determined according to the airspace transmission filter used by the first terminal device for broadcast communication; the first default airspace reception filter is determined according to the first The airspace reception filter used by the terminal device to receive sidelink data sent by other terminal devices in the broadcast communication mode is determined.

以下对其进行说明。It is explained below.

在一些可选实施方式中，所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器对应于第一缺省TCI状态；或者，所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器对应于第一缺省侧行CSI-RS资源。In some optional implementation manners, the first default airspace transmit filter and/or the first default airspace receive filter corresponds to a first default TCI state; or, the first default airspace transmit The filter and/or the first default spatial domain reception filter corresponds to the first default side row CSI-RS resource.

在一些可选实施方式中，所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器基于预定义信息、预配置信息、网络配置信息中的至少之一确定。In some optional implementation manners, the first default airspace transmit filter and/or the first default airspace receive filter is determined based on at least one of predefined information, preconfiguration information, and network configuration information.

在一些可选实施方式中，所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器基于所述第一终端设备或者所述第二终端设备配置的第五指示信息确定，所述第五指示信息用于指示所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器。这里，可选地，所述第五指示信息承载在SCI、或者MAC CE、或者PC5-RRC信令中。In some optional implementation manners, the first default airspace transmit filter and/or the first default airspace receive filter is based on a fifth indication configured by the first terminal device or the second terminal device The information is determined, and the fifth indication information is used to indicate the first default airspace transmit filter and/or the first default airspace receive filter. Here, optionally, the fifth indication information is carried in SCI, or MAC CE, or PC5-RRC signaling.

对于根据预定义信息确定所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器，例如：协议中规定如下预定义信息：第一终端设备在获取最优发送波束(即目标空域发送滤波器)前使用特定的波束(即第一缺省空域发送滤波器)进行侧行传输。该特定的波束与第一终端设备进行广播时的发送波束相同，或该特定的波束是终端采用全向(omni-directional)发送的方式所对应的发送波束。For determining the first default airspace transmit filter and/or the first default airspace receive filter according to predefined information, for example: the protocol stipulates the following predefined information: the first terminal device obtains the optimal transmit beam (that is, the target airspace transmit filter) before using a specific beam (that is, the first default airspace transmit filter) for lateral transmission. The specific beam is the same as the sending beam when the first terminal device broadcasts, or the specific beam is a sending beam corresponding to the omni-directional (omni-directional) sending mode of the terminal.

对于根据预配置信息或网络配置信息确定所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器，例如：在资源池配置信息中包括一个指示信息，该指示信息用于确定第一终端设备在获取最优发送波束(即目标空域发送滤波器)前使用的波束信息(即第一缺省空域发送滤波器的信息)，或该指示信息用于确定第一终端设备在发送指示最优发送波束的信息时所使用的波束信息(即第一缺省空域发送滤波器的信息)。For determining the first default airspace transmit filter and/or the first default airspace receive filter according to preconfiguration information or network configuration information, for example: the resource pool configuration information includes an indication information, the indication information It is used to determine the beam information (that is, the information of the first default airspace transmission filter) used by the first terminal device before obtaining the optimal transmission beam (that is, the target airspace transmission filter), or the indication information is used to determine the first terminal device Beam information (that is, the information of the first default airspace transmission filter) used by the device when sending the information indicating the optimal transmission beam.

对于根据第一终端设备或第二终端设备配置的第五指示信息确定所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器，例如：第一终端设备和第二终端设备之间通过PC5-RRC信令交互一个指示信息，该指示信息用于确定第一终端设备在发送指示最优发送波束的信息时所使用的波束信息(即第一缺省空域发送滤波器的信息)。又例如：当第一终端在向第二终端设备配置TCI状态时，同时指示其中的一个TCI状态所对应的空域发送滤波器为第一缺省空域发送滤波器，即第一终端设备在指示发送波束信息时，该指示信息所使用的空域发送滤波器为该第一缺省空域发送滤波器。For determining the first default airspace transmit filter and/or the first default airspace receive filter according to the fifth indication information configured by the first terminal device or the second terminal device, for example: the first terminal device and the second terminal device An indication information is exchanged between the two terminal devices through PC5-RRC signaling, and the indication information is used to determine the beam information used by the first terminal device when sending the information indicating the optimal transmission beam (that is, the first default airspace transmission filter device information). Another example: when the first terminal configures the TCI state for the second terminal device, it also indicates that the airspace transmit filter corresponding to one of the TCI states is the first default airspace transmit filter, that is, the first terminal device is instructing to transmit When beam information is provided, the spatial domain transmission filter used by the indication information is the first default spatial domain transmission filter.

在一些可选实施方式中，所述第五指示信息被配置之前，所述第一终端设备使用第二缺省空域发送滤波器和/或第二缺省空域接收滤波器进行侧行传输。这里，可选地，所述第二缺省空域发送滤波器和/或所述第二缺省空域接收滤波器基于预定义信息、预配置信息、网络配置信息中的至少之一确定。基于此，选项A)若所述第一终端设备和所述第二终端设备之间的单播链路有效，则：A-1)若所述第一终端设备通过所述第五指示信息向所述第二终端设备配置了所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器，则所述第一终端设备使用所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器进行侧行传输；A-2)若所述第一终端设备未通过所述第五指示信息向所述第二终端设备配置所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器，则所述第一终端设备使用所述第二缺省空域发送滤波器和/或所述第二缺省空域接收滤波器进行侧行传输。选项B)若所述第一终端设备和所述第二终端设备之间的单播链路无效，In some optional implementation manners, before the fifth indication information is configured, the first terminal device uses the second default airspace transmit filter and/or the second default airspace receive filter to perform sidelink transmission. Here, optionally, the second default airspace transmit filter and/or the second default airspace receive filter is determined based on at least one of predefined information, preconfiguration information, and network configuration information. Based on this, option A) if the unicast link between the first terminal device and the second terminal device is valid, then: A-1) if the first terminal device transmits the fifth indication information to The second terminal device is configured with the first default airspace transmit filter and/or the first default airspace receive filter, and the first terminal device uses the first default airspace transmit filter And/or the first default airspace receiving filter performs sidelink transmission; A-2) If the first terminal device does not configure the first default to the second terminal device through the fifth indication information save the spatial domain transmit filter and/or the first default spatial domain receive filter, then the first terminal device uses the second default spatial domain transmit filter and/or the second default spatial domain receive filter Make sideways transfers. Option B) If the unicast link between the first terminal device and the second terminal device is invalid,

则所述第一终端设备使用所述第二缺省空域发送滤波器和/或所述第二缺省空域接收滤波器进行侧行传输。Then the first terminal device uses the second default airspace transmit filter and/or the second default airspace receive filter to perform sidelink transmission.

本申请实施例的技术方案，提出了一种在侧行传输***中利用缺省空域传输滤波器(缺省空域发送滤波器和/或缺省空域接收滤波器)进行侧行传输，如此，可以实现第一终端设备与第二终端设备进行正常的侧行通信。The technical solution of the embodiment of the present application proposes a sidelink transmission using the default airspace transmission filter (the default airspace transmission filter and/or the default airspace reception filter) in the sidelink transmission system, so that the The normal side communication between the first terminal device and the second terminal device is realized.

图10是本申请实施例提供的侧行传输方法的流程示意图二，如图10所示，所述侧行传输方法包括以下步骤：Fig. 10 is a second schematic flow diagram of the lateral transmission method provided by the embodiment of the present application. As shown in Fig. 10, the lateral transmission method includes the following steps:

步骤1001：第二终端设备使用第三缺省空域接收滤波器接收第一终端设备发送的第一侧行传输，和/或使用第三缺省空域发送滤波器向所述第一终端设备发送第二侧行传输。Step 1001: The second terminal device uses the third default airspace receiving filter to receive the first sidelink transmission sent by the first terminal device, and/or uses the third default airspace transmitting filter to send the first sidelink transmission to the first terminal device. Two side row transmission.

本申请实施例中，第二终端设备可以使用第三缺省空域接收滤波器和/或第三缺省空域发送滤波器与第一终端设备进行侧行传输。在一些可选实施方式中，所述第三缺省空域接收滤波器和所述第三缺省空域发送滤波器具有关联关系或者说具有对应关系，这种关联关系或者对应关系体现在：如果第二终端设备进行接收时使用的空域接收滤波器是所述第三缺省空域接收滤波器，那么第二终端设备进行发送时使用的空域发送滤波器就会是所述第三缺省空域发送滤波器。或者，如果第二终端设备进行发送时使用的空域发送滤波器是所述第三缺省空域发送滤波器，那么第二终端设备进行接收时使用的空域接收滤波器是所述第三缺省空域接收滤波器。In this embodiment of the present application, the second terminal device may use the third default airspace receiving filter and/or the third default airspace transmitting filter to perform sidelink transmission with the first terminal device. In some optional implementation manners, the third default airspace receiving filter and the third default airspace transmitting filter have an association relationship or a correspondence relationship, and this association relationship or correspondence relationship is reflected in: if the third default airspace transmission filter The airspace receiving filter used by the second terminal device when receiving is the third default airspace receiving filter, then the airspace transmitting filter used by the second terminal device when transmitting will be the third default airspace transmitting filter device. Or, if the airspace transmission filter used by the second terminal device for transmission is the third default airspace transmission filter, then the airspace reception filter used by the second terminal device for reception is the third default airspace transmission filter. receive filter.

方案一Option One

本申请实施例中，所述第二终端设备使用第三缺省空域接收滤波器接收第一终端设备发送的侧行链路建立请求消息，所述侧行链路建立请求消息用于请求建立所述第一终端设备与所述第二终端设备之间的单播链路。In this embodiment of the present application, the second terminal device uses the third default airspace receiving filter to receive the sidelink establishment request message sent by the first terminal device, and the sidelink establishment request message is used to request establishment of the a unicast link between the first terminal device and the second terminal device.

进一步，可选地，所述第二终端设备使用第三缺省空域发送滤波器向所述第一终端设备发送侧行链路建立接受消息，所述侧行链路建立接受消息用于指示所述第二终端设备接受所述第一终端设备的侧行链路建立请求；或者，所述第二终端设备使用第三缺省空域发送滤波器向所述第一终端设备发送侧行链路建立拒绝消息，所述侧行链路建立拒绝消息用于指示所述第二终端设备拒绝所述第一终端设备的侧行链路建立请求。Further, optionally, the second terminal device uses a third default airspace transmission filter to send a sidelink establishment acceptance message to the first terminal equipment, where the sidelink establishment acceptance message is used to indicate the The second terminal device accepts the sidelink establishment request of the first terminal device; or, the second terminal device uses a third default airspace transmission filter to send a sidelink establishment request to the first terminal device A rejection message, where the sidelink establishment rejection message is used to instruct the second terminal device to reject the sidelink establishment request of the first terminal device.

方案二Option II

本申请实施例中，所述第二终端设备使用第三缺省空域接收滤波器接收第一终端设备发送的侧行RRC重配置消息，所述侧行RRC重配置消息用于重配置所述第一终端设备与所述第二终端设备之间的侧行RRC连接。In this embodiment of the present application, the second terminal device uses the third default airspace receiving filter to receive a side RRC reconfiguration message sent by the first terminal device, and the side RRC reconfiguration message is used to reconfigure the second RRC reconfiguration message. A side RRC connection between a terminal device and the second terminal device.

进一步，可选地，所述第二终端设备使用第三缺省空域发送滤波器向所述第一终端设备发送侧行RRC重配置完成消息，所述侧行RRC重配置完成消息用于指示所述第一终端设备与所述第二终端设备之间的侧行RRC连接重配置完成；或者，所述第二终端设备使用第三缺省空域发送滤波器向所述第一终端设备发送侧行RRC重配置失败消息，所述侧行RRC重配置失败消息用于指示所述第一终端设备与所述第二终端设备之间的侧行RRC连接重配置失败。Further, optionally, the second terminal device uses a third default airspace transmission filter to send a side RRC reconfiguration complete message to the first terminal device, and the side RRC reconfiguration complete message is used to indicate the The reconfiguration of the sidelink RRC connection between the first terminal device and the second terminal device is completed; or, the second terminal device uses a third default airspace transmission filter to send a sidelink RRC connection to the first terminal device An RRC reconfiguration failure message, the side RRC reconfiguration failure message is used to indicate that the side RRC connection reconfiguration between the first terminal device and the second terminal device fails.

在一些可选实施方式中，所述第二终端设备使用第三缺省空域发送滤波器向所述第一终端设备发送侧行RRC重配置失败消息的情况下，所述第二终端设备使用第三缺省空域接收滤波器接收第一终端设备发送的单播链路连接请求消息，所述单播链路连接请求消息用于请求重新建立单播链路。In some optional implementation manners, when the second terminal device uses the third default airspace transmission filter to send a sidelink RRC reconfiguration failure message to the first terminal device, the second terminal device uses the third default airspace transmission filter. The third default airspace receiving filter receives a unicast link connection request message sent by the first terminal device, where the unicast link connection request message is used to request re-establishment of a unicast link.

方案三third solution

本申请实施例中，所述第二终端设备使用第三缺省空域接收滤波器接收第一终端设备发送的携带第一指示信息的第一侧行传输，所述第一指示信息用于指示进行所述第一终端设备的空域发送滤波器的选取过程和/或所述第二终端设备的空域接收滤波器的选取过程。In this embodiment of the present application, the second terminal device uses the third default airspace receiving filter to receive the first sidelink transmission sent by the first terminal device and carries the first indication information, and the first indication information is used to instruct to perform A process of selecting a spatial domain transmit filter of the first terminal device and/or a process of selecting a spatial domain receive filter of the second terminal device.

情况1)所述第一指示信息指示进行所述第一终端设备的空域发送滤波器的选取过程的情况下，所述第二终端设备接收所述第一终端设备使用多个空域发送滤波器发送的参考信号，对所述参考信号进行测量；所述第二终端设备向所述第一终端设备发送针对所述参考信号测量的反馈信息，所述反馈信息用于所述第一终端设备从所述多个空域发送滤波器中选取一个空域发送滤波器作为目标空域发送滤波器，或者用于所述第一终端设备确定目标空域发送滤波器。Situation 1) In the case where the first indication information indicates that the selection process of the spatial domain transmission filter of the first terminal device is performed, the second terminal device receives the information transmitted by the first terminal device using multiple spatial domain transmission filters. The reference signal is used to measure the reference signal; the second terminal device sends feedback information for the reference signal measurement to the first terminal device, and the feedback information is used by the first terminal device from the Selecting a spatial domain transmission filter from the plurality of spatial domain transmission filters as a target spatial domain transmission filter, or using it for the first terminal device to determine a target spatial domain transmission filter.

情况2)所述第一指示信息指示进行所述第二终端设备的空域接收滤波器的选取过程的情况下，所述第二终端设备使用多个空域接收滤波器接收所述第一终端设备发送的考信号，对所述参考信号进行测量；所述第二终端设备基于所述参考信号的测量结果从所述多个空域接收滤波器中选取一个空域接收滤波器作为目标空域接收滤波器。Situation 2) In the case where the first indication information indicates that the selection process of the spatial domain receiving filter of the second terminal device is performed, the second terminal device uses a plurality of spatial domain receiving filters to receive the transmission sent by the first terminal device. The reference signal is measured, and the reference signal is measured; the second terminal device selects a spatial domain reception filter from the plurality of spatial domain reception filters as a target spatial domain reception filter based on the measurement result of the reference signal.

方案四Option four

本申请实施例中，所述第二终端设备使用第三缺省空域接收滤波器接收第一终端设备发送的携带第二指示信息的第一侧行传输，所述第二指示信息用于确定所述第一终端设备选取的目标空域发送滤波器，或者，所述第二指示信息用于指示所述第一终端设备在第一时刻之后使用所述目标空域发送滤波器进行侧行传输。In this embodiment of the present application, the second terminal device uses the third default airspace receiving filter to receive the first sidelink transmission carrying the second indication information sent by the first terminal device, and the second indication information is used to determine the The target airspace transmit filter selected by the first terminal device, or the second indication information is used to instruct the first terminal device to use the target airspace transmit filter to perform sidelink transmission after the first moment.

在一些实施方式中，所述第三指示信息承载在SCI、MAC CE或PC5-RRC信令中。In some implementation manners, the third indication information is carried in SCI, MAC CE or PC5-RRC signaling.

进一步，可选地，所述第二终端设备基于所述第一侧行传输的结束位置确定第二时刻，所述第一时刻和所述第二时刻之间的时间间隔大于或等于所述第一时长，所述第二时刻位于所示第一时刻之前。例如：第二时刻为第一侧行传输的结束位置对应的时刻，第一时刻位于第二时刻之后且距离第二时刻的时间间隔大于或等于第一时长。Further, optionally, the second terminal device determines a second moment based on the end position of the first lateral transmission, and the time interval between the first moment and the second moment is greater than or equal to the first moment For a period of time, the second moment is located before the first moment shown. For example: the second moment is the moment corresponding to the end position of the first lateral transmission, the first moment is located after the second moment and the time interval from the second moment is greater than or equal to the first duration.

在一些可选实施方式中，所述第二终端设备在所述第一时刻和所述第二时刻之间时间间隔期间使用所述第三缺省空域接收滤波器进行侧行传输。In some optional implementation manners, the second terminal device uses the third default airspace reception filter to perform sidelink transmission during a time interval between the first moment and the second moment.

作为一种可选的情况，若所述第二指示信息承载在MAC CE中，则所述第一侧行传输的结束位置对应于承载所述MAC CE的PSSCH的最后一个时域符号的结束位置。As an optional situation, if the second indication information is carried in the MAC CE, the end position of the first sidelink transmission corresponds to the end position of the last time domain symbol of the PSSCH carrying the MAC CE .

在一些可选实施方式中，若所述第二指示信息承载在第一阶SCI、第二阶SCI或MAC CE中，In some optional implementation manners, if the second indication information is carried in the first-order SCI, second-order SCI or MAC CE,

所述第二终端设备接收第一终端设备发送的携带所述第二指示信息的第一侧行传输时激活侧行反馈。The second terminal device activates sidelink feedback when receiving the first sidelink transmission carrying the second indication information sent by the first terminal device.

在一些可选实施方式中，在当前波束失效的情况下，所述第二终端设备使用第三缺省空域接收滤波器接收第一终端设备发送的携带第二指示信息的第一侧行传输。In some optional implementation manners, when the current beam fails, the second terminal device uses a third default airspace reception filter to receive the first sidelink transmission carrying the second indication information sent by the first terminal device.

这里，可选地，所述第二终端设备使用第三缺省空域发送滤波器向所述第一终端设备发送第四指示信息，所述第四指示信息用于指示当前波束失效。Here, optionally, the second terminal device sends fourth indication information to the first terminal device by using the third default airspace transmission filter, where the fourth indication information is used to indicate that the current beam is invalid.

在一些实施方式中，所述第二终端设备确定当前波束(记为第三波束)失效的情况下，由于第三波束失效，因此第二终端设备无法使用该第三波束进行侧行传输，在接收第二指示信息时，可以使用第三缺省接收波束接收该第二指示信息。In some implementation manners, when the second terminal device determines that the current beam (denoted as the third beam) is invalid, because the third beam is invalid, the second terminal device cannot use the third beam for lateral transmission. When receiving the second indication information, the third default receiving beam may be used to receive the second indication information.

方案五Option five

本申请实施例中，在单播链路失效的情况下，所述第二终端设备使用第三缺省空域接收滤波器接收第一终端设备发送的单播链路连接请求消息，所述单播链路连接请求消息用于请求建立单播链路。In this embodiment of the present application, when the unicast link fails, the second terminal device uses the third default airspace receiving filter to receive the unicast link connection request message sent by the first terminal device, and the unicast The Link Connection Request message is used to request the establishment of a unicast link.

本申请实施例中，所述第三缺省空域接收滤波器和/或所述第三缺省空域发送滤波器可以理解为所述第二终端设备默认使用(也即缺省使用)的空域接收滤波器和/或空域发送滤波器；或者，所述第三缺省空域接收滤波器和/或所述第三缺省空域发送滤波器是所述第二终端设备和所述第一终端设备建立单播链路前或单播链路失效(即无线链路失效(Radio Link Failure，RLF))后所使用的空域发送滤波器和/或空域接收滤波器；或者，所述第三缺省空域接收滤波器和/或所述第三缺省空域发送滤波器是所述第二终端设备和所述第一终端设备之间进行侧行RRC重配置时所使用的空域发送滤波器和/或空域接收滤波器；或者，所述第三缺省空域接收滤波器是所述第二终端设备获取最优接收波束(即目标空域接收滤波器)前所使用的空域接收滤波器；或者，所述第三缺省空域接收滤波器是所述第二终端设备接收用于指示启动发送波束选取过程或接收波束选取过程的指示信息时所使用的空域接收滤波器；或者，所述第三缺省空域接收滤波器是所述第二终端设备接收用于指示选取的目标空域发送滤波器的指示信息时所使用的空域接收滤波器；或者，所述第三缺省空域接收滤波器是所述第二终端设备通过波束选取过程选取的目标空域接收滤波器发生波束失效的情况下所使用的空域接收滤波器；或者，所述第三缺省空域接收滤波器是所述第二终端设备接收用于指示波束切换的指示信息时所使用的空域接收滤波器。In this embodiment of the present application, the third default airspace receiving filter and/or the third default airspace transmitting filter can be understood as the airspace receiving filter used by default (that is, used by default) by the second terminal device. filter and/or airspace transmit filter; or, the third default airspace receive filter and/or the third default airspace transmit filter is established by the second terminal device and the first terminal device The airspace transmit filter and/or airspace receive filter used before the unicast link or after the unicast link fails (i.e. Radio Link Failure, RLF); or, the third default airspace The receive filter and/or the third default airspace transmit filter is an airspace transmit filter and/or an airspace transmit filter used when sidelink RRC reconfiguration is performed between the second terminal device and the first terminal device receiving filter; or, the third default spatial receiving filter is the spatial receiving filter used before the second terminal device obtains the optimal receiving beam (ie, the target spatial receiving filter); or, the first The third default airspace receiving filter is the airspace receiving filter used when the second terminal device receives the indication information for instructing to start the transmit beam selection process or receive beam selection process; or, the third default airspace receive filter The filter is the airspace reception filter used by the second terminal device when receiving the indication information indicating the selected target airspace transmission filter; or, the third default airspace reception filter is the second terminal equipment The spatial receiving filter used by the device in the case of beam failure in the target spatial receiving filter selected through the beam selection process; or, the third default spatial receiving filter is the signal received by the second terminal device for indicating the beam Spatial receive filter to use when switching indication messages.

在一些实施方式中，所述第三缺省空域发送滤波器根据所述第二终端设备进行广播通信时使用的空域发送滤波器确定；所述第三缺省空域接收滤波器根据所述第二终端设备接收其他终端设备以广播通信方式发送的侧行数据时使用的空域接收滤波器确定。In some embodiments, the third default airspace transmission filter is determined according to the airspace transmission filter used by the second terminal device for broadcast communication; the third default airspace reception filter is determined according to the second The airspace reception filter used by the terminal device to receive sidelink data sent by other terminal devices in the broadcast communication mode is determined.

以下对其进行说明。It is explained below.

在一些可选实施方式中，所述第三缺省空域发送滤波器和/或所述第三缺省空域接收滤波器对应于第三缺省TCI状态；或者，所述第三缺省空域发送滤波器和/或所述第三缺省空域接收滤波器对应于第三缺省侧行CSI-RS资源。In some optional implementation manners, the third default airspace transmit filter and/or the third default airspace receive filter corresponds to a third default TCI state; or, the third default airspace transmit The filter and/or the third default spatial domain reception filter corresponds to the third default side row CSI-RS resource.

在一些可选实施方式中，所述第三缺省空域发送滤波器和/或所述第三缺省空域接收滤波器基于预定义信息、预配置信息、网络配置信息中的至少之一确定。In some optional implementation manners, the third default airspace transmit filter and/or the third default airspace receive filter is determined based on at least one of predefined information, preconfiguration information, and network configuration information.

在一些可选实施方式中，所述第三缺省空域发送滤波器和/或所述第三缺省空域接收滤波器基于所述第一终端设备或者所述第二终端设备配置的第六指示信息确定，所述第六指示信息用于指示所述第三缺省空域发送滤波器和/或所述第三缺省空域接收滤波器。这里，可选地，所述第六指示信息承载在SCI、或者MAC CE、或者PC5-RRC信令中。In some optional implementation manners, the third default airspace transmit filter and/or the third default airspace receive filter is based on a sixth indication configured by the first terminal device or the second terminal device Information determination, the sixth indication information is used to indicate the third default airspace transmit filter and/or the third default airspace receive filter. Here, optionally, the sixth indication information is carried in SCI, or MAC CE, or PC5-RRC signaling.

在一些可选实施方式中，所述第六指示信息被配置之前，所述第二终端设备使用第四缺省空域发送滤波器和/或第四缺省空域接收滤波器进行侧行传输。这里，可选地，所述第四缺省空域发送滤波器和/或所述第四缺省空域接收滤波器基于预定义信息、预配置信息、网络配置信息中的至少之一确定。基于此，选项I)若所述第二终端设备和所述第一终端设备之间的单播链路有效，则：I-1)若所述第二终端设备通过所述第六指示信息向所述第二终端设备配置了所述第三缺省空域发送滤波器和/或所述第三缺省空域接收滤波器，则所述第一终端设备使用所述第三缺省空域发送滤波器和/或所述第三缺省空域接收滤波器进行侧行传输；I-2)若所述第一终端设备未通过所述第六指示信息向所述第二终端设备配置所述第三缺省空域发送滤波器和/或所述第三缺省空域接收滤波器，则所述第一终端设备使用所述第四缺省空域发送滤波器和/或所述第四缺省空域接收滤波器进行侧行传输。选项II)若所述第二终端设备和所述第一终端设备之间的单播链路无效，则所述第二终端设备使用所述第四缺省空域发送滤波器和/或所述第四缺省空域接收滤波器进行侧行传输。In some optional implementation manners, before the sixth indication information is configured, the second terminal device uses the fourth default airspace transmit filter and/or the fourth default airspace receive filter to perform sidelink transmission. Here, optionally, the fourth default airspace transmit filter and/or the fourth default airspace receive filter is determined based on at least one of predefined information, preconfiguration information, and network configuration information. Based on this, option I) if the unicast link between the second terminal device and the first terminal device is valid, then: I-1) if the second terminal device transmits the sixth indication information to The second terminal device is configured with the third default airspace transmit filter and/or the third default airspace receive filter, and the first terminal device uses the third default airspace transmit filter And/or the third default airspace reception filter performs sidelink transmission; I-2) If the first terminal device does not configure the third default to the second terminal device through the sixth indication information save the airspace transmit filter and/or the third default airspace receive filter, then the first terminal device uses the fourth default airspace transmit filter and/or the fourth default airspace receive filter Make sideways transfers. Option II) If the unicast link between the second terminal device and the first terminal device is invalid, the second terminal device uses the fourth default airspace transmit filter and/or the first Four default spatial receive filters for sidelink transmissions.

以下结合具体应用实例对本申请实施例的技术方案进行举例说明。需要说明的是，以下应用实例是以波束进行说明的，关于“波束”的描述也可以替换为“空域传输滤波器”，例如“发送波束”的描述也可以替换为“空域发送滤波器”，“接收波束”的描述也可以替换为“空域接收滤波器”。The technical solutions of the embodiments of the present application are illustrated below in conjunction with specific application examples. It should be noted that the following application examples are described in terms of beams, and the description of "beam" can also be replaced with "spatial transmission filter", for example, the description of "transmission beam" can also be replaced by "spatial transmission filter", The description of "receive beam" can also be replaced with "spatial domain receive filter".

应用实例一Application example one

第一缺省波束用于第一终端设备和第二终端设备进行单播链路建立过程或侧行链路RRC重配置过程。The first default beam is used for the first terminal device and the second terminal device to perform a unicast link establishment process or a sidelink RRC reconfiguration process.

在一些可选实施方式中，第一终端设备和第二终端设备进行单播链路建立过程，此时，第一终端设备还没有选取最优的发送波束，因此，第一终端设备可以基于第一缺省波束进行单播链路建立过程。具体地，第一终端设备使用第一缺省发送波束向第二终端设备发送侧行链路建立请求消息，所述侧行链路建立请求消息用于请求建立所述第一终端设备与所述第二终端设备之间的单播链路；进一步，可选地，第一终端设备使用第一缺省接收波束接收第二终端设备发送的侧行链路建立接受消息或者侧行链路建立拒绝消息，所述侧行链路建立接受消息用于指示所述第二终端设备接受所述第一终端设备的侧行链路建立请求，所述侧行链路建立接受消息用于指示所述第二终端设备接受所述第一终端设备的侧行链路建立请求。可选地，单播链路建立过程中使用的第一缺省波束(如第一缺省发送波束和/或第一缺省接收波束)基于预定义信息、预配置信息、网络配置信息中的至少之一确定。In some optional implementation manners, the first terminal device and the second terminal device perform a unicast link establishment process. At this time, the first terminal device has not selected the optimal transmission beam. Therefore, the first terminal device may A default beam is used for the unicast link establishment procedure. Specifically, the first terminal device sends a sidelink establishment request message to the second terminal device using the first default sending beam, and the sidelink establishment request message is used to request to establish the connection between the first terminal device and the A unicast link between the second terminal devices; further, optionally, the first terminal device uses the first default receiving beam to receive the sidelink establishment acceptance message or the sidelink establishment rejection message sent by the second terminal device message, the sidelink establishment acceptance message is used to indicate that the second terminal equipment accepts the sidelink establishment request of the first terminal equipment, and the sidelink establishment acceptance message is used to indicate that the second terminal equipment accepts the sidelink establishment request of the first terminal equipment. The second terminal device accepts the sidelink establishment request of the first terminal device. Optionally, the first default beam (such as the first default sending beam and/or the first default receiving beam) used in the unicast link establishment process is based on predefined information, pre-configuration information, and network configuration information. At least one of them is OK.

在一些可选实施方式中，第一终端设备和第二终端设备进行侧行链路RRC重配置过程，此时，第一终端设备可以基于第一缺省波束进行侧行链路RRC重配置过程。具体地，第一终端设备使用第一缺省发送波束向第二终端设备发送侧行无线资源控制RRC重配置消息，所述侧行RRC重配置消息用于重配置所述第一终端设备与所述第二终端设备之间的侧行RRC连接；进一步，可选地，第一终端设备使用第一缺省接收波束接收第二终端设备发送的侧行RRC重配置完成消息或者侧行RRC重配置失败消息，所述侧行RRC重配置完成消息用于指示所述第一终端设备与所述第二终端设备之间的侧行RRC连接重配置完成，所述侧行RRC重配置失败消息用于指示所述第一终端设备与所述第二终端设备之间的侧行RRC连接重配置失败。可选地，单播链路建立过程中使用的第一缺省波束(如第一缺省发送波束和/或第一缺省接收波束)基于预定义信息、预配置信息、网络配置信息中的至少之一确定，或者，基于第一终端设备或第二终端设备配置的指示信息确定。In some optional implementation manners, the first terminal device and the second terminal device perform the sidelink RRC reconfiguration process, at this time, the first terminal device may perform the sidelink RRC reconfiguration process based on the first default beam . Specifically, the first terminal device sends a sidelink radio resource control RRC reconfiguration message to the second terminal device using the first default transmission beam, and the sidelink RRC reconfiguration message is used to reconfigure the first terminal device and the The side RRC connection between the second terminal devices; further, optionally, the first terminal device uses the first default receiving beam to receive the side RRC reconfiguration complete message or the side RRC reconfiguration message sent by the second terminal device A failure message, the side RRC reconfiguration complete message is used to indicate that the side RRC connection reconfiguration between the first terminal device and the second terminal device is completed, and the side RRC reconfiguration failure message is used for Indicating that the reconfiguration of the side RRC connection between the first terminal device and the second terminal device fails. Optionally, the first default beam (such as the first default sending beam and/or the first default receiving beam) used in the unicast link establishment process is based on predefined information, pre-configuration information, and network configuration information. At least one of them is determined, or determined based on indication information configured by the first terminal device or the second terminal device.

应用实例二Application example two

第一缺省波束用于第一终端设备发送第一指示信息，该第一指示信息用于指示触发或开始进行波束的选取过程。其中，波束的选取包括第一终端设备侧的发送波束的选取和/或第二终端设备侧的接收波束的选取。The first default beam is used for the first terminal device to send first indication information, where the first indication information is used to indicate to trigger or start a process of selecting a beam. Wherein, the selection of the beam includes the selection of the transmission beam at the first terminal device side and/or the selection of the reception beam at the second terminal device side.

当第一终端设备和第二终端设备建立单播链路，需要进行波束选取时，在选取发送波束的过程中，第一终端设备使用多个不同的发送波束轮流发送侧行CSI-RS，第二终端设备使用相同的接收波束对侧行CSI-RS进行接收并测量，对于这种情况，第一终端设备需要提前向第二终端设备发送第一指示信息，该第一指示信息用于指示第一终端设备将要进行发送波束的选取过程，从而使得第二终端设备可以使用相同的接收波束进行接收并测量；第一终端设备在发送第一指示信息时，可以使用第一缺省发送波束进行发送。同理，在选取接收波束的过程中，第一终端设备使用相同的发送波束发送侧行CSI-RS，第二终端设备使用多个不同的接收波束对侧行CSI-RS进行接收并测量，对于这种情况，第一终端设备同样需要预先向第二终端设备发送第一指示信息，该第一指示信息用于指示第一终端设备将要进行接收波束的选取过程，从而使得第二终端设备可以使用多个不同的接收波束对侧行CSI-RS进行接收并测量；第一终端设备在发送第一指示信息时，可以使用第一缺省发送波束进行发送。When the first terminal device and the second terminal device establish a unicast link and beam selection needs to be performed, during the process of selecting a transmission beam, the first terminal device uses multiple different transmission beams to send side CSI-RS in turn, and the second The two terminal devices use the same receiving beam to receive and measure the side row CSI-RS. In this case, the first terminal device needs to send the first indication information to the second terminal device in advance, and the first indication information is used to indicate that the first A terminal device is going to select a sending beam, so that the second terminal device can use the same receiving beam for receiving and measuring; when the first terminal device sends the first indication information, it can use the first default sending beam for sending . Similarly, in the process of selecting the receiving beam, the first terminal device uses the same transmitting beam to transmit the side row CSI-RS, and the second terminal device uses multiple different receiving beams to receive and measure the side row CSI-RS, for In this case, the first terminal device also needs to send the first indication information to the second terminal device in advance, and the first indication information is used to indicate that the first terminal device is going to select a receiving beam, so that the second terminal device can use A plurality of different receiving beams receive and measure the side row CSI-RS; when the first terminal device sends the first indication information, it may use the first default sending beam for sending.

可选地，上述过程中使用的第一缺省波束(如第一缺省发送波束)基于预定义信息、预配置信息、网络配置信息中的至少之一确定，或者，基于第一终端设备或第二终端设备配置的指示信息确定。Optionally, the first default beam (such as the first default sending beam) used in the above process is determined based on at least one of predefined information, pre-configuration information, and network configuration information, or based on the first terminal device or The indication information configured by the second terminal device is determined.

如图11所示，该图是第一终端设备选取发送波束的过程，第一终端设备在时隙0向第二终端设备发送第一指示信息，该第一指示信息用于指示第一终端设备启动发送波束的选取过程，该第一指示信息使用第一缺省发送波束进行发送，该第一缺省发送波束例如是第一终端设备和第二终端设备建立单播链路过程中，第一终端设备向第二终端设备配置的缺省发送波束。在时隙3、时隙5、时隙6和时隙8，第一终端设备分别使用不同的发送波束发送侧行CSI-RS，第二终端设备对接收到的侧行CSI-RS进行测量，并选取最优的侧行CSI-RS(如信号质量最好的侧行CSI-RS)，将其对应的资源信息反馈给第一终端设备，第一终端设备根据该侧行CSI-RS资源所对应的发送波束即可确定最优的发送波束。As shown in Figure 11, this figure is the process of the first terminal device selecting a transmission beam. The first terminal device sends the first indication information to the second terminal device at time slot 0. The first indication information is used to indicate the first terminal device Start the selection process of the sending beam, the first indication information is sent using the first default sending beam, the first default sending beam is, for example, during the process of establishing a unicast link between the first terminal device and the second terminal device, the first The terminal device configures a default sending beam to the second terminal device. In time slot 3, time slot 5, time slot 6, and time slot 8, the first terminal device uses different transmission beams to transmit side-link CSI-RS, and the second terminal device measures the received side-line CSI-RS, And select the optimal sideline CSI-RS (such as the sideline CSI-RS with the best signal quality), feed back its corresponding resource information to the first terminal device, and the first terminal device The corresponding sending beam can determine the optimal sending beam.

应用实例三Application Example 3

第一缺省波束用于第一终端设备发送第二指示信息，该第二指示信息用于确定目标发送波束或者用于指示所述第一终端设备在第一时刻之后使用目标发送波束进行侧行传输。The first default beam is used for the first terminal device to send the second indication information, and the second indication information is used for determining the target transmission beam or for instructing the first terminal device to use the target transmission beam for sidewalk after the first moment transmission.

可选地，所述第一时刻基于第一时长确定，所述第一时长是根据预定义信息确定的，或者，所述第一时长是根据预配置信息确定的，或者，所述第一时长是根据网络配置信息确定的，或者，所述第一时长是根据所述第一终端设备发送的指示信息确定的。Optionally, the first moment is determined based on a first duration, and the first duration is determined according to predefined information, or the first duration is determined according to preconfigured information, or the first duration It is determined according to network configuration information, or the first duration is determined according to instruction information sent by the first terminal device.

可选地，所述第一侧行传输的结束位置用于确定第二时刻，所述第一时刻和所述第二时刻之间的时间间隔大于或等于所述第一时长，所述第二时刻位于所示第一时刻之前。这里，所述第一终端设备在所述时间间隔期间使用所述第一缺省空域发送滤波器进行侧行传输。Optionally, the end position of the first lateral transmission is used to determine a second moment, the time interval between the first moment and the second moment is greater than or equal to the first duration, and the second The time is before the first time shown. Here, the first terminal device uses the first default spatial domain transmit filter to perform sidelink transmission during the time interval.

作为示例，如图12所示，第二终端设备在时隙a接收到第一终端设备发送的第二指示信息，在时隙a的结束位置(对应第二时刻)之后的第一时刻之后，第二终端设备才会认为第一终端设备使用了该第二指示信息指示的目标发送波束进行发送，相应地，第一终端设备在第一时刻之后使用目标发送波束进行发送，第一时刻位于第二时刻之后且距离第二时刻的时长大于或等于第一时长。如图12中的时隙c和时隙d对应的侧行传输使用目标发送波束进行发送，而在时隙a的结束位置之后到第一时刻之前对应的侧行传输仍然使用第一缺省波束进行发送，如图中时隙b的侧行传输使用第一缺省波束进行发送。As an example, as shown in FIG. 12, the second terminal device receives the second indication information sent by the first terminal device in time slot a, and after the first moment after the end position of time slot a (corresponding to the second moment), The second terminal device will consider that the first terminal device uses the target transmission beam indicated by the second indication information for transmission. Correspondingly, the first terminal device uses the target transmission beam for transmission after the first moment. The duration after the second moment and the distance from the second moment is greater than or equal to the first duration. As shown in Figure 12, the sidelink transmission corresponding to time slot c and time slot d uses the target transmission beam for transmission, while the corresponding sidelink transmission after the end position of time slot a and before the first moment still uses the first default beam Sending is performed, for example, the sidelink transmission of time slot b in the figure is sent using the first default beam.

可选地，所述第一侧行传输的结束位置对应于所述第一侧行传输所在时隙的结束位置；或者，所述第一侧行传输的结束位置对应于所述第一侧行传输占据的最后一个时域符号的结束位置；或者，所述第一侧行传输的结束位置对应于所述第一侧行传输调度的第三侧行传输占据的最后一个时域符号的结束位置。Optionally, the end position of the first side line transmission corresponds to the end position of the time slot where the first side line transmission is located; or, the end position of the first side line transmission corresponds to the end position of the first side line transmission The end position of the last time domain symbol occupied by the transmission; or, the end position of the first side line transmission corresponds to the end position of the last time domain symbol occupied by the third side line transmission scheduled by the first side line transmission .

具体地，若所述第二指示信息携带在第一阶SCI中，则所述第一侧行传输的结束位置对应于PSCCH的最后一个时域符号的结束位置，或者对应于所述PSCCH调度的PSSCH的最后一个时域符号的结束位置，其中，所述第一阶SCI承载于所述PSCCH中；若所述第二指示信息承载在第二阶SCI中，则所述第一侧行传输的结束位置对应于所述第二阶SCI的最后一个时域符号的结束位置，或者对应于PSCCH调度的PSSCH的最后一个时域符号的结束位置；若所述第二指示信息承载在MAC CE中，则所述第一侧行传输的结束位置对应于承载所述MAC CE的PSSCH的最后一个时域符号的结束位置；若所述第二指示信息承载在PC5-RRC信令中，则所述第一侧行传输的结束位置对应于承载所述PC5-RRC信令的PSSCH的最后一个时域符号的结束位置。Specifically, if the second indication information is carried in the first-order SCI, the end position of the first sidelink transmission corresponds to the end position of the last time domain symbol of the PSCCH, or corresponds to the end position of the PSCCH scheduled The end position of the last time domain symbol of the PSSCH, wherein the first-order SCI is carried in the PSCCH; if the second indication information is carried in the second-order SCI, the first sideline transmission The end position corresponds to the end position of the last time domain symbol of the second-order SCI, or corresponds to the end position of the last time domain symbol of the PSSCH scheduled by the PSCCH; if the second indication information is carried in the MAC CE, Then the end position of the first sideline transmission corresponds to the end position of the last time domain symbol of the PSSCH bearing the MAC CE; if the second indication information is carried in the PC5-RRC signaling, the first The end position of the side-line transmission corresponds to the end position of the last time-domain symbol of the PSSCH carrying the PC5-RRC signaling.

可选的，所述第二指示信息承载于SCI、MAC CE或PC5-RRC信令中。Optionally, the second indication information is carried in SCI, MAC CE or PC5-RRC signaling.

可选的，若所述第二指示信息承载在第一阶SCI、第二阶SCI或MAC CE中，所述第一终端设备向第二终端设备发送携带所述第二指示信息的第一侧行传输时激活侧行反馈。Optionally, if the second indication information is carried in the first-order SCI, second-order SCI or MAC CE, the first terminal device sends to the second terminal device the first side information carrying the second indication information. Activate side row feedback during row transmission.

可选的，所述第一缺省波束和所述目标发送波束可以是相同的发送波束，或者也可可以是不同的发送波束。Optionally, the first default beam and the target beam may be the same beam, or may be different beams.

应用实例四Application Example 4

第一终端设备检测到波束失效或无线链路失效时，使用第一缺省波束进行侧行通信。这里，当第一终端设备检测到波束失效或无线链路失效时，表示当前的发送波束已经无法满足通信需求了，需要进行波束切换或重新建立单播链路，此时第一终端设备可以使用第一缺省波束进行侧行传输。When detecting beam failure or wireless link failure, the first terminal device uses the first default beam to perform lateral communication. Here, when the first terminal device detects that the beam fails or the wireless link fails, it means that the current transmission beam can no longer meet the communication requirements, and it is necessary to perform beam switching or re-establish a unicast link. At this time, the first terminal device can use The first default beam performs sidebound transmission.

在一些可选实施方式中，当第一终端设备检测到波束失效时，表示当前的发送波束无法满足传输需求，需要进行波束切换或者波束重选，此时，第一终端设备可以使用第一缺省波束发送第二指示信息，该第二指示信息用于确定目标发送波束或者用于指示所述第一终端设备在第一时刻之后使用目标发送波束进行侧行传输。这里，目标发送波束为第一终端设备重新选取的发送波束。In some optional implementation manners, when the first terminal device detects that the beam fails, it means that the current transmission beam cannot meet the transmission requirements, and beam switching or beam reselection is required. At this time, the first terminal device can use the first beam failure The beam-saving second indication information is used to determine the target transmission beam or to instruct the first terminal device to use the target transmission beam to perform sidelink transmission after the first moment. Here, the target transmission beam is a transmission beam newly selected by the first terminal device.

在一些可选实施方式中，当第一终端设备检测到无线链路失效时，表示第一终端设备和第二终端设备之间的单播链路已经失效，需要重新建立单播链路，此时，第一终端设备可以使用第一缺省波束发送单播链路连接请求。In some optional implementation manners, when the first terminal device detects that the wireless link fails, it means that the unicast link between the first terminal device and the second terminal device has failed, and the unicast link needs to be re-established. , the first terminal device may use the first default beam to send a unicast link connection request.

应用实例五Application example five

第一缺省波束用于第一终端设备接收到第二终端设备发送的波束失效指示信息时，使用第一缺省波束进行侧行通信；或者，当第一终端设备确定发生了波束失效时，使用第一缺省波束进行侧行通信。The first default beam is used by the first terminal device to use the first default beam for lateral communication when it receives the beam failure indication information sent by the second terminal device; or, when the first terminal device determines that a beam failure has occurred, Use the first default beam for sidebound communications.

在一些实施方式中，第二终端设备判断发生了波束失效，并且将指示波束失效的指示信息发送给第一终端设备，第一终端设备使用第一缺省波束接收第二终端设备发送的用于指示波束失效的指示信息，进行波束切换或波束重选，此时，第一终端设备可以使用第一缺省波束发送第二指示信息，该第二指示信息用于确定目标发送波束或者用于指示所述第一终端设备在第一时刻之后使用目标发送波束进行侧行传输。这里，目标发送波束为第一终端设备重新选取的发送波束；或者，第一终端设备使用第一缺省波束发送第一指示信息，该第一指示信息用于指示第一终端设备开始发送波束选取过程。In some implementations, the second terminal device determines that beam failure has occurred, and sends indication information indicating beam failure to the first terminal device, and the first terminal device uses the first default beam to receive the information sent by the second terminal device for Indication information indicating beam failure, beam switching or beam reselection, at this time, the first terminal device can use the first default beam to send the second indication information, the second indication information is used to determine the target transmission beam or to indicate The first terminal device uses the target transmit beam to perform sidelink transmission after the first moment. Here, the target transmission beam is a transmission beam newly selected by the first terminal device; or, the first terminal device uses the first default beam to send first indication information, and the first indication information is used to instruct the first terminal device to start transmission beam selection process.

在一些实施方式中，第一终端设备判断发生了波束失效，例如，第一终端设备连续N次检测到非连续传输(Discontinuous transmission，DTX)状态，此时，第一终端设备使用第一缺省波束发送第二指示信息，该第二指示信息用于确定目标发送波束或者用于指示所述第一终端设备在第一时刻之后使用目标发送波束进行侧行传输。这里，目标发送波束为第一终端设备重新选取的发送波束；或者，第一终端设备使用第一缺省波束发送第一指示信息，该第一指示信息用于指示第一终端设备开始发送波束选取过程。In some implementations, the first terminal device determines that a beam failure has occurred, for example, the first terminal device detects a discontinuous transmission (Discontinuous transmission, DTX) state for N consecutive times, and at this time, the first terminal device uses the first default The beam sends second indication information, where the second indication information is used to determine a target transmission beam or to instruct the first terminal device to use the target transmission beam to perform sidelink transmission after the first moment. Here, the target transmission beam is a transmission beam newly selected by the first terminal device; or, the first terminal device uses the first default beam to send first indication information, and the first indication information is used to instruct the first terminal device to start transmission beam selection process.

需要说明的是，本申请实施例的上述方案中，第一终端设备使用缺省波束进行的侧行传输可以是以下一种或多种信道或信号的传输：PSCCH、PSSCH、PSCCH-DMRS、PSSCH-DMRS、侧行CSI-RS、PT-RS。It should be noted that, in the above scheme of the embodiment of the present application, the sidelink transmission performed by the first terminal device using the default beam may be the transmission of one or more of the following channels or signals: PSCCH, PSSCH, PSCCH-DMRS, PSSCH - DMRS, sideline CSI-RS, PT-RS.

以上结合附图详细描述了本申请的优选实施方式，但是，本申请并不限于上述实施方式中的具体细节，在本申请的技术构思范围内，可以对本申请的技术方案进行多种简单变型，这些简单变型均属于本申请的保护范围。例如，在上述具体实施方式中所描述的各个具体技术特征，在不矛盾的情况下，可以通过任何合适的方式进行组合，为了避免不必要的重复，本申请对各种可能的组合方式不再另行说明。又例如，本申请的各种不同的实施方式之间也可以进行任意组合，只要其不违背本申请的思想，其同样应当视为本申请所公开的内容。又例如，在不冲突的前提下，本申请描述的各个实施例和/或各个实施例中的技术特征可以和现有技术任意的相互组合，组合之后得到的技术方案也应落入本申请的保护范围。The preferred embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application. These simple modifications all belong to the protection scope of the present application. For example, the various specific technical features described in the above specific implementation manners can be combined in any suitable manner if there is no contradiction. Separately. As another example, any combination of various implementations of the present application can also be made, as long as they do not violate the idea of the present application, they should also be regarded as the content disclosed in the present application. For another example, on the premise of no conflict, the various embodiments described in this application and/or the technical features in each embodiment can be combined with the prior art arbitrarily, and the technical solutions obtained after the combination should also fall within the scope of this application. protected range.

还应理解，在本申请的各种方法实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。此外，在本申请实施例中，术语“下行”、“上行”和“侧行”用于表示信号或数据的传输方向，其中，“下行”用于表示信号或数据的传输方向为从站点发送至小区的用户设备的第一方向，“上行”用于表示信号或数据的传输方向为从小区的用户设备发送至站点的第二方向，“侧行”用于表示信号或数据的传输方向为从用户设备1发送至用户设备2的第三方向。例如，“下行信号”表示该信号的传输方向为第一方向。另外，本申请实施例中，术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系。具体地，A和/或B可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。It should also be understood that, in various method embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and the order of execution of the processes should be determined by their functions and internal logic, and should not be used in this application. The implementation of the examples constitutes no limitation. In addition, in this embodiment of the application, the terms "downlink", "uplink" and "sidelink" are used to indicate the transmission direction of signals or data, wherein "downlink" is used to indicate that the transmission direction of signals or data is sent from the station The first direction to the user equipment in the cell, "uplink" is used to indicate that the signal or data transmission direction is the second direction sent from the user equipment in the cell to the station, and "side line" is used to indicate that the signal or data transmission direction is A third direction sent from UE1 to UE2. For example, "downlink signal" indicates that the transmission direction of the signal is the first direction. In addition, in the embodiment of the present application, the term "and/or" is only an association relationship describing associated objects, indicating that there may be three relationships. Specifically, A and/or B may mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

图13是本申请实施例提供的侧行传输装置的结构组成示意图一，应用于第一终端设备，如图13所示，所述侧行传输装置包括：Fig. 13 is a schematic diagram of the first structural composition of the side transmission device provided by the embodiment of the present application, which is applied to the first terminal equipment. As shown in Fig. 13, the side transmission device includes:

传输单元1301，用于使用第一缺省空域发送滤波器向第二终端设备发送第一侧行传输，和/或使用第一缺省空域接收滤波器接收所述第二终端设备发送的第二侧行传输。The transmission unit 1301 is configured to use the first default airspace sending filter to send the first sidelink transmission to the second terminal device, and/or use the first default airspace receiving filter to receive the second transmission sent by the second terminal device. sideways transmission.

在一些可选实施方式中，所述传输单元1301，用于使用第一缺省空域发送滤波器向第二终端设备发送侧行链路建立请求消息，所述侧行链路建立请求消息用于请求建立所述第一终端设备与所述第二终端设备之间的单播链路。In some optional implementation manners, the transmission unit 1301 is configured to use the first default airspace transmission filter to send a sidelink establishment request message to the second terminal device, and the sidelink establishment request message is used for Requesting to establish a unicast link between the first terminal device and the second terminal device.

在一些可选实施方式中，所述传输单元1301，用于使用第一缺省空域接收滤波器接收所述第二终端设备发送的侧行链路建立接受消息，所述侧行链路建立接受消息用于指示所述第二终端设备接受所述第一终端设备的侧行链路建立请求；或者，使用第一缺省空域接收滤波器接收所述第二终端设备发送的侧行链路建立拒绝消息，所述侧行链路建立拒绝消息用于指示所述第二终端设备拒绝所述第一终端设备的侧行链路建立请求。In some optional implementation manners, the transmission unit 1301 is configured to use the first default airspace receiving filter to receive the sidelink establishment acceptance message sent by the second terminal device, the sidelink establishment acceptance message The message is used to instruct the second terminal device to accept the sidelink establishment request of the first terminal device; or, use the first default airspace reception filter to receive the sidelink establishment request sent by the second terminal device A rejection message, where the sidelink establishment rejection message is used to instruct the second terminal device to reject the sidelink establishment request of the first terminal device.

在一些可选实施方式中，所述传输单元1301，用于使用第一缺省空域发送滤波器向第二终端设备发送侧行无线资源控制RRC重配置消息，所述侧行RRC重配置消息用于重配置所述第一终端设备与所述第二终端设备之间的侧行RRC连接。In some optional implementation manners, the transmitting unit 1301 is configured to use the first default airspace transmission filter to transmit a sidelink radio resource control RRC reconfiguration message to the second terminal device, and the sidelink RRC reconfiguration message uses to reconfigure the side RRC connection between the first terminal device and the second terminal device.

在一些可选实施方式中，所述传输单元1301，用于使用第一缺省空域接收滤波器接收所述第二终端设备发送的侧行RRC重配置完成消息，所述侧行RRC重配置完成消息用于指示所述第一终端设备与所述第二终端设备之间的侧行RRC连接重配置完成；或者，使用第一缺省空域接收滤波器接收所述第二终端设备发送的侧行RRC重配置失败消息，所述侧行RRC重配置失败消息用于指示所述第一终端设备与所述第二终端设备之间的侧行RRC连接重配置失败。In some optional implementation manners, the transmission unit 1301 is configured to use the first default airspace receiving filter to receive a side RRC reconfiguration complete message sent by the second terminal device, the side RRC reconfiguration is completed The message is used to indicate that the sidelink RRC connection reconfiguration between the first terminal device and the second terminal device is completed; or, use the first default airspace receiving filter to receive the sidelink RRC connection sent by the second terminal device An RRC reconfiguration failure message, the side RRC reconfiguration failure message is used to indicate that the side RRC connection reconfiguration between the first terminal device and the second terminal device fails.

在一些可选实施方式中，所述传输单元1301，用于若接收到侧行RRC重配置失败消息，则使用所述第一缺省空域发送滤波器向第二终端设备发送单播链路连接请求消息，所述单播链路连接请求消息用于请求重新建立单播链路。In some optional implementation manners, the transmission unit 1301 is configured to use the first default airspace transmission filter to transmit a unicast link connection to the second terminal device if a sidelink RRC reconfiguration failure message is received. A request message, where the unicast link connection request message is used to request to re-establish the unicast link.

在一些可选实施方式中，所述传输单元1301，用于使用第一缺省空域发送滤波器向第二终端设备发送携带第一指示信息的第一侧行传输，所述第一指示信息用于指示进行所述第一终端设备的空域发送滤波器的选取过程和/或所述第二终端设备的空域接收滤波器的选取过程。In some optional implementation manners, the transmission unit 1301 is configured to use the first default airspace transmission filter to send the first sidelink transmission carrying the first indication information to the second terminal device, and the first indication information uses Instructing to perform the selection process of the spatial domain transmission filter of the first terminal device and/or the selection process of the spatial domain reception filter of the second terminal device.

在一些可选实施方式中，所述第一指示信息指示进行所述第一终端设备的空域发送滤波器的选取过程的情况下，所述传输单元1301，还用于使用多个空域发送滤波器向所述第二终端设备发送参考信号；接收所述第二终端设备发送的针对所述参考信号测量的反馈信息；In some optional implementation manners, when the first indication information indicates that the selection process of the spatial domain transmission filter of the first terminal device is performed, the transmission unit 1301 is further configured to use multiple spatial domain transmission filters Sending a reference signal to the second terminal device; receiving feedback information sent by the second terminal device for the measurement of the reference signal;

所述装置还包括：确定单元1302，用于基于所述反馈信息从所述多个空域发送滤波器中选取一个空域发送滤波器作为目标空域发送滤波器，或者基于所述反馈信息确定目标空域发送滤波器。The apparatus further includes: a determining unit 1302, configured to select a spatial transmission filter from the plurality of spatial transmission filters as a target spatial transmission filter based on the feedback information, or determine a target spatial transmission filter based on the feedback information filter.

在一些可选实施方式中，所述第一指示信息指示进行所述第二终端设备的空域接收滤波器的选取过程的情况下，所述传输单元1301，还用于使用相同的空域发送滤波器向所述第二终端设备发送参考信号，所述参考信号被所述第二终端设备使用多个空域接收滤波器接收并测量，所述参考信号的测量结果用于所述第二终端设备从所述多个空域接收滤波器中选取一个空域接收滤波器作为目标空域接收滤波器。In some optional implementation manners, when the first indication information indicates that the selection process of the spatial domain receiving filter of the second terminal device is performed, the transmission unit 1301 is further configured to use the same spatial domain transmitting filter sending a reference signal to the second terminal device, the reference signal is received and measured by the second terminal device using a plurality of spatial receiving filters, and the measurement result of the reference signal is used for the second terminal device to receive from the Select one spatial domain reception filter from the plurality of spatial domain reception filters as the target spatial domain reception filter.

在一些可选实施方式中，所述参考信号为侧行CSI-RS。In some optional implementation manners, the reference signal is a side row CSI-RS.

在一些可选实施方式中，所述传输单元1301，用于使用第一缺省空域发送滤波器向第二终端设备发送携带第二指示信息的第一侧行传输，所述第二指示信息用于确定所述第一终端设备选取的目标空域发送滤波器，或者，所述第二指示信息用于指示所述第一终端设备在第一时刻之后使用所述目标空域发送滤波器进行侧行传输。In some optional implementation manners, the transmission unit 1301 is configured to use the first default airspace transmission filter to send the first sidelink transmission carrying the second indication information to the second terminal device, and the second indication information uses To determine the target airspace transmit filter selected by the first terminal device, or the second indication information is used to instruct the first terminal device to use the target airspace transmit filter to perform sidelink transmission after the first moment .

在一些可选实施方式中，所述第一侧行传输的结束位置用于确定第二时刻，所述第一时刻和所述第二时刻之间的时间间隔大于或等于所述第一时长，所述第二时刻位于所示第一时刻之前。In some optional implementation manners, the end position of the first lateral transmission is used to determine a second moment, and the time interval between the first moment and the second moment is greater than or equal to the first duration, The second instant is located before the first instant shown.

在一些可选实施方式中，所述第一终端设备在所述时间间隔期间使用所述第一缺省空域发送滤波器进行侧行传输。In some optional implementation manners, the first terminal device uses the first default airspace transmit filter to perform sidelink transmission during the time interval.

在一些可选实施方式中，所述第一侧行传输的结束位置对应于所述第一侧行传输所在时隙的结束位置；或者，所述第一侧行传输的结束位置对应于所述第一侧行传输占据的最后一个时域符号的结束位置；或者，所述第一侧行传输的结束位置对应于所述第一侧行传输调度的第三侧行传输占据的最后一个时域符号的结束位置。In some optional implementation manners, the end position of the first side transmission corresponds to the end position of the time slot where the first side transmission is located; or, the end position of the first side transmission corresponds to the The end position of the last time domain symbol occupied by the first side line transmission; or, the end position of the first side line transmission corresponds to the last time domain occupied by the third side line transmission scheduled by the first side line transmission The ending position of the symbol.

在一些可选实施方式中，若所述第二指示信息携带在第一阶SCI中，则所述第一侧行传输的结束位置对应于PSCCH的最后一个时域符号的结束位置，或者对应于所述PSCCH调度的PSSCH的最后一个时域符号的结束位置；若所述第二指示信息承载在第二阶SCI中，则所述第一侧行传输的结束位置对应于所述第二阶SCI的最后一个时域符号的结束位置，或者对应于PSCCH调度的PSSCH的最后一个时域符号的结束位置；若所述第二指示信息承载在MAC CE中，则所述第一侧行传输的结束位置对应于承载所述MAC CE的PSSCH的最后一个时域符号的结束位置；若所述第二指示信息承载在PC5-RRC信令中，则所述第一侧行传输的结束位置对应于承载所述PC5-RRC信令的PSSCH的最后一个时域符号的结束位置；其中，所述第一阶SCI承载于所述PSCCH中。In some optional implementation manners, if the second indication information is carried in the first-order SCI, the end position of the first sidelink transmission corresponds to the end position of the last time domain symbol of the PSCCH, or corresponds to The end position of the last time domain symbol of the PSSCH scheduled by the PSCCH; if the second indication information is carried in the second-order SCI, the end position of the first sideline transmission corresponds to the second-order SCI The end position of the last time domain symbol of the PSCCH, or the end position of the last time domain symbol corresponding to the PSSCH scheduled by the PSCCH; if the second indication information is carried in the MAC CE, the end of the first sideline transmission The position corresponds to the end position of the last time domain symbol of the PSSCH bearing the MAC CE; if the second indication information is carried in the PC5-RRC signaling, the end position of the first sideline transmission corresponds to the end position of the bearer The end position of the last time-domain symbol of the PSSCH signaled by the PC5-RRC; wherein, the first-order SCI is carried in the PSCCH.

在一些可选实施方式中，若所述第二指示信息承载在第一阶SCI、第二阶SCI或MAC CE中，所述传输单元1301向第二终端设备发送携带所述第二指示信息的第一侧行传输时激活侧行反馈。In some optional implementation manners, if the second indication information is carried in the first-order SCI, the second-order SCI, or the MAC CE, the transmission unit 1301 sends a message carrying the second indication information to the second terminal device. Activate sidetrack feedback for the first sidetrack transmission.

在一些可选实施方式中，所述传输单元1301，用于确定当前波束失效的情况下，使用第一缺省空域发送滤波器向第二终端设备发送携带第二指示信息的第一侧行传输。In some optional implementation manners, the transmission unit 1301 is configured to use the first default airspace transmission filter to send the first sidelink transmission carrying the second indication information to the second terminal device when it is determined that the current beam fails .

在一些可选实施方式中，所述传输单元1301，还用于通过第一缺省空域接收滤波器接接收所述第二终端设备发送的第四指示信息，所述第四指示信息用于指示当前波束失效；In some optional implementation manners, the transmission unit 1301 is further configured to receive fourth indication information sent by the second terminal device through the first default airspace reception filter, the fourth indication information is used to indicate current beam failure;

所述确定单元1302，用于基于所述第四指示信息确定当前波束失效。The determining unit 1302 is configured to determine the current beam failure based on the fourth indication information.

在一些可选实施方式中，所述传输单元1301，用于确定当前单播链路失效的情况下，使用第一缺省空域发送滤波器向第二终端设备发送单播链路连接请求消息，所述单播链路连接请求消息用于请求建立单播链路。In some optional implementation manners, the transmission unit 1301 is configured to use the first default airspace transmission filter to send a unicast link connection request message to the second terminal device when it is determined that the current unicast link fails, The unicast link connection request message is used to request to establish a unicast link.

在一些可选实施方式中，所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器基于所述第一终端设备或者所述第二终端设备配置的第五指示信息确定，所述第五指示信息用于指示所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器。In some optional implementation manners, the first default airspace transmit filter and/or the first default airspace receive filter is based on a fifth indication configured by the first terminal device or the second terminal device The information is determined, and the fifth indication information is used to indicate the first default airspace transmit filter and/or the first default airspace receive filter.

在一些可选实施方式中，所述第五指示信息承载在SCI、或者MAC CE、或者PC5-RRC信令中。In some optional implementation manners, the fifth indication information is carried in SCI, or MAC CE, or PC5-RRC signaling.

在一些可选实施方式中，所述传输单元1301，还用于在所述第五指示信息被配置之前，使用第二缺省空域发送滤波器和/或第二缺省空域接收滤波器进行侧行传输。In some optional implementation manners, the transmitting unit 1301 is further configured to use the second default airspace transmit filter and/or the second default airspace receive filter before the fifth indication information is configured. Line transmission.

在一些可选实施方式中，所述第二缺省空域发送滤波器和/或所述第二缺省空域接收滤波器基于预定义信息、预配置信息、网络配置信息中的至少之一确定。In some optional implementation manners, the second default airspace transmit filter and/or the second default airspace receive filter is determined based on at least one of predefined information, preconfiguration information, and network configuration information.

在一些可选实施方式中，所述传输单元1301，还用于若所述第一终端设备和所述第二终端设备之间的单播链路有效，则：In some optional implementation manners, the transmission unit 1301 is further configured to: if the unicast link between the first terminal device and the second terminal device is valid:

若所述第一终端设备通过所述第五指示信息向所述第二终端设备配置了所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器，则使用所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器进行侧行传输；If the first terminal device configures the first default airspace transmit filter and/or the first default airspace receive filter to the second terminal device through the fifth indication information, use the performing sidelink transmission with the first default spatial domain transmit filter and/or the first default spatial domain receive filter;

若所述第一终端设备未通过所述第五指示信息向所述第二终端设备配置所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器，则使用所述第二缺省空域发送滤波器和/或所述第二缺省空域接收滤波器进行侧行传输。If the first terminal device does not configure the first default airspace transmit filter and/or the first default airspace receive filter to the second terminal device through the fifth indication information, use the The second default spatial domain transmit filter and/or the second default spatial domain receive filter performs sidelink transmission.

在一些可选实施方式中，所述传输单元1301，还用于若所述第一终端设备和所述第二终端设备之间的单播链路无效，则使用所述第二缺省空域发送滤波器和/或所述第二缺省空域接收滤波器进行侧行传输。In some optional implementation manners, the transmission unit 1301 is further configured to use the second default airspace to send the filter and/or the second default spatial domain receive filter for sidelink transmission.

本领域技术人员应当理解，本申请实施例的上述侧行传输装置的相关描述可以参照本申请实施例的侧行传输方法的相关描述进行理解。Those skilled in the art should understand that the relevant description of the above-mentioned lateral transmission device in the embodiment of the present application can be understood with reference to the relevant description of the lateral transmission method in the embodiment of the present application.

图14是本申请实施例提供的侧行传输装置的结构组成示意图二，应用于第二终端设备，如图14所示，所述侧行传输装置包括：Fig. 14 is a second schematic diagram of the structure and composition of the lateral transmission device provided by the embodiment of the present application, which is applied to the second terminal equipment. As shown in Fig. 14, the lateral transmission device includes:

传输单元1401，用于使用第三缺省空域接收滤波器接收第一终端设备发送的第一侧行传输，和/或使用第三缺省空域发送滤波器向所述第一终端设备发送第二侧行传输。The transmitting unit 1401 is configured to use a third default airspace receiving filter to receive the first sidelink transmission sent by the first terminal device, and/or use the third default airspace sending filter to send the second sidelink transmission to the first terminal device. sideways transmission.

在一些可选实施方式中，所述传输单元1401，用于使用第三缺省空域接收滤波器接收第一终端设备发送的侧行链路建立请求消息，所述侧行链路建立请求消息用于请求建立所述第一终端设备与所述第二终端设备之间的单播链路。In some optional implementation manners, the transmission unit 1401 is configured to use a third default airspace reception filter to receive a sidelink establishment request message sent by the first terminal device, and the sidelink establishment request message uses to request to establish a unicast link between the first terminal device and the second terminal device.

在一些可选实施方式中，所述传输单元1401，用于使用第三缺省空域发送滤波器向所述第一终端设备发送侧行链路建立接受消息，所述侧行链路建立接受消息用于指示所述第二终端设备接受所述第一终端设备的侧行链路建立请求；或者，使用第三缺省空域发送滤波器向所述第一终端设备发送侧行链路建立拒绝消息，所述侧行链路建立拒绝消息用于指示所述第二终端设备拒绝所述第一终端设备的侧行链路建立请求。In some optional implementation manners, the transmission unit 1401 is configured to use a third default airspace transmission filter to send a sidelink establishment acceptance message to the first terminal device, the sidelink establishment acceptance message It is used to instruct the second terminal device to accept the sidelink establishment request of the first terminal device; or, to send a sidelink establishment rejection message to the first terminal device using a third default airspace transmission filter , the sidelink establishment rejection message is used to instruct the second terminal device to reject the sidelink establishment request of the first terminal device.

在一些可选实施方式中，所述传输单元1401，用于使用第三缺省空域接收滤波器接收第一终端设备发送的侧行RRC重配置消息，所述侧行RRC重配置消息用于重配置所述第一终端设备与所述第二终端设备之间的侧行RRC连接。In some optional implementation manners, the transmission unit 1401 is configured to use a third default airspace reception filter to receive a side RRC reconfiguration message sent by the first terminal device, and the side RRC reconfiguration message is used to reconfigure Configuring a sidelink RRC connection between the first terminal device and the second terminal device.

在一些可选实施方式中，所述传输单元1401，用于使用第三缺省空域发送滤波器向所述第一终端设备发送侧行RRC重配置完成消息，所述侧行RRC重配置完成消息用于指示所述第一终端设备与所述第二终端设备之间的侧行RRC连接重配置完成；或者，使用第三缺省空域发送滤波器向所述第一终端设备发送侧行RRC重配置失败消息，所述侧行RRC重配置失败消息用于指示所述第一终端设备与所述第二终端设备之间的侧行RRC连接重配置失败。In some optional implementation manners, the transmission unit 1401 is configured to use a third default airspace transmission filter to send a side RRC reconfiguration complete message to the first terminal device, the side RRC reconfiguration complete message It is used to indicate that the side RRC connection reconfiguration between the first terminal device and the second terminal device is completed; or, use the third default airspace transmission filter to send the side RRC reconfiguration to the first terminal device A configuration failure message, the side RRC reconfiguration failure message is used to indicate that the side RRC connection reconfiguration between the first terminal device and the second terminal device fails.

在一些可选实施方式中，所述第二终端设备使用第三缺省空域发送滤波器向所述第一终端设备发送侧行RRC重配置失败消息的情况下，所述传输单元1401，用使用第三缺省空域接收滤波器接收第一终端设备发送的单播链路连接请求消息，所述单播链路连接请求消息用于请求重新建立单播链路。In some optional implementation manners, when the second terminal device uses the third default airspace transmission filter to send a sidelink RRC reconfiguration failure message to the first terminal device, the transmission unit 1401 uses The third default airspace receiving filter receives a unicast link connection request message sent by the first terminal device, where the unicast link connection request message is used to request re-establishment of a unicast link.

在一些可选实施方式中，所述传输单元1401，用于使用第三缺省空域接收滤波器接收第一终端设备发送的携带第一指示信息的第一侧行传输，所述第一指示信息用于指示进行所述第一终端设备的空域发送滤波器的选取过程和/或所述第二终端设备的空域接收滤波器的选取过程。In some optional implementation manners, the transmission unit 1401 is configured to use a third default airspace receiving filter to receive the first sidelink transmission carrying the first indication information sent by the first terminal device, the first indication information It is used to instruct to perform the selection process of the spatial domain transmission filter of the first terminal device and/or the selection process of the spatial domain reception filter of the second terminal device.

在一些可选实施方式中，所述第一指示信息指示进行所述第一终端设备的空域发送滤波器的选取过程的情况下，所述传输单元1401，还用于接收所述第一终端设备使用多个空域发送滤波器发送的参考信号，对所述参考信号进行测量；向所述第一终端设备发送针对所述参考信号测量的反馈信息，所述反馈信息用于所述第一终端设备从所述多个空域发送滤波器中选取一个空域发送滤波器作为目标空域发送滤波器，或者用于所述第一终端设备确定目标空域发送滤波器。In some optional implementation manners, when the first indication information indicates that the selection process of the airspace transmission filter of the first terminal device is performed, the transmission unit 1401 is further configured to receive the first terminal device Using reference signals sent by a plurality of spatial domain transmission filters to measure the reference signals; sending feedback information for the reference signal measurement to the first terminal device, the feedback information is used for the first terminal device Selecting a spatial domain transmission filter from the plurality of spatial domain transmission filters as a target spatial domain transmission filter, or for the first terminal device to determine a target spatial domain transmission filter.

在一些可选实施方式中，所述第一指示信息指示进行所述第二终端设备的空域接收滤波器的选取过程的情况下，所述传输单元1401，还用于使用多个空域接收滤波器接收所述第一终端设备发送的考信号，对所述参考信号进行测量；In some optional implementation manners, when the first indication information indicates that the selection process of the spatial domain reception filter of the second terminal device is performed, the transmission unit 1401 is further configured to use multiple spatial domain reception filters receiving a reference signal sent by the first terminal device, and measuring the reference signal;

所述装置还包括：确定单元1402，用于基于所述参考信号的测量结果从所述多个空域接收滤波器中选取一个空域接收滤波器作为目标空域接收滤波器。The apparatus further includes: a determining unit 1402, configured to select a spatial reception filter from the plurality of spatial reception filters as a target spatial reception filter based on the measurement result of the reference signal.

在一些可选实施方式中，所述传输单元1401，用于使用第三缺省空域接收滤波器接收第一终端设备发送的携带第二指示信息的第一侧行传输，所述第二指示信息用于确定所述第一终端设备选取的目标空域发送滤波器，或者，所述第二指示信息用于指示所述第一终端设备在第一时刻之后使用所述目标空域发送滤波器进行侧行传输。In some optional implementation manners, the transmission unit 1401 is configured to use a third default airspace reception filter to receive the first sidelink transmission carrying the second indication information sent by the first terminal device, the second indication information It is used to determine the target airspace transmission filter selected by the first terminal device, or the second indication information is used to instruct the first terminal device to use the target airspace transmission filter to perform side travel after the first moment transmission.

在一些可选实施方式中，所述第一终端设备在所述时间间隔期间使用所述第三缺省空域接收滤波器进行侧行传输。In some optional implementation manners, the first terminal device uses the third default spatial domain reception filter to perform sidelink transmission during the time interval.

在一些可选实施方式中，若所述第二指示信息承载在第一阶SCI、第二阶SCI或MAC CE中，所述第二终端设备接收第一终端设备发送的携带所述第二指示信息的第一侧行传输时激活侧行反馈。In some optional implementation manners, if the second indication information is carried in the first-order SCI, second-order SCI or MAC CE, the second terminal device receives the second indication information sent by the first terminal device and carries the second indication information. Sidetrack feedback is activated on the first sideline transmission of information.

在一些可选实施方式中，所述传输单元1401，用于在当前波束失效的情况下，使用第三缺省空域接收滤波器接收第一终端设备发送的携带第二指示信息的第一侧行传输。In some optional implementation manners, the transmission unit 1401 is configured to use the third default airspace reception filter to receive the first side line carrying the second indication information sent by the first terminal device when the current beam fails. transmission.

在一些可选实施方式中，所述传输单元1401，还用于使用第三缺省空域发送滤波器向所述第一终端设备发送第四指示信息，所述第四指示信息用于指示当前波束失效。In some optional implementation manners, the transmission unit 1401 is further configured to use a third default airspace transmission filter to send fourth indication information to the first terminal device, where the fourth indication information is used to indicate the current beam invalidated.

在一些可选实施方式中，所述传输单元1401，用于在单播链路失效的情况下，使用第三缺省空域接收滤波器接收第一终端设备发送的单播链路连接请求消息，所述单播链路连接请求消息用于请求建立单播链路。In some optional implementation manners, the transmission unit 1401 is configured to use a third default airspace receiving filter to receive the unicast link connection request message sent by the first terminal device when the unicast link fails, The unicast link connection request message is used to request to establish a unicast link.

在一些可选实施方式中，所述第三缺省空域发送滤波器和/或所述第三缺省空域接收滤波器基于所述第一终端设备或者所述第二终端设备配置的第六指示信息确定，所述第六指示信息用于指示所述第三缺省空域发送滤波器和/或所述第三缺省空域接收滤波器。In some optional implementation manners, the third default airspace transmit filter and/or the third default airspace receive filter is based on a sixth indication configured by the first terminal device or the second terminal device Information determination, the sixth indication information is used to indicate the third default airspace transmit filter and/or the third default airspace receive filter.

在一些可选实施方式中，所述第六指示信息承载在SCI、或者MAC CE、或者PC5-RRC信令中。In some optional implementation manners, the sixth indication information is carried in SCI, or MAC CE, or PC5-RRC signaling.

在一些可选实施方式中，所述传输单元1401，还用于在所述第六指示信息被配置之前，使用第四缺省空域发送滤波器和/或第四缺省空域接收滤波器进行侧行传输。In some optional implementation manners, the transmission unit 1401 is further configured to use the fourth default airspace transmit filter and/or the fourth default airspace receive filter before the sixth indication information is configured. Line transmission.

在一些可选实施方式中，所述第四缺省空域发送滤波器和/或所述第四缺省空域接收滤波器基于预定义信息、预配置信息、网络配置信息中的至少之一确定。In some optional implementation manners, the fourth default airspace transmit filter and/or the fourth default airspace receive filter is determined based on at least one of predefined information, preconfiguration information, and network configuration information.

在一些可选实施方式中，所述传输单元1401，还用于若所述第二终端设备和所述第一终端设备之间的单播链路有效，则：In some optional implementation manners, the transmission unit 1401 is further configured to: if the unicast link between the second terminal device and the first terminal device is valid:

若所述第二终端设备通过所述第六指示信息向所述第二终端设备配置了所述第三缺省空域发送滤波器和/或所述第三缺省空域接收滤波器，则使用所述第三缺省空域发送滤波器和/或所述第三缺省空域接收滤波器进行侧行传输；If the second terminal device configures the third default airspace transmit filter and/or the third default airspace receive filter to the second terminal device through the sixth indication information, use the performing sidelink transmission with the third default spatial domain transmit filter and/or the third default spatial domain receive filter;

若所述第一终端设备未通过所述第六指示信息向所述第二终端设备配置所述第三缺省空域发送滤波器和/或所述第三缺省空域接收滤波器，则使用所述第四缺省空域发送滤波器和/或所述第四缺省空域接收滤波器进行侧行传输。If the first terminal device does not configure the third default airspace transmit filter and/or the third default airspace receive filter to the second terminal device through the sixth indication information, use the The fourth default spatial domain transmit filter and/or the fourth default spatial domain receive filter performs sidelink transmission.

在一些可选实施方式中，所述传输单元1401，还用于若所述第二终端设备和所述第一终端设备之间的单播链路无效，则使用所述第四缺省空域发送滤波器和/或所述第四缺省空域接收滤波器进行侧行传输。In some optional implementation manners, the transmission unit 1401 is further configured to use the fourth default airspace to send filter and/or the fourth default spatial domain receive filter for sidelink transmission.

图15是本申请实施例提供的一种通信设备1500示意性结构图。该通信设备可以是终端设备(如第一终端设备、第二终端设备)。图15所示的通信设备1500包括处理器1510，处理器1510可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。Fig. 15 is a schematic structural diagram of a communication device 1500 provided by an embodiment of the present application. The communication device may be a terminal device (such as a first terminal device, a second terminal device). The communication device 1500 shown in FIG. 15 includes a processor 1510, and the processor 1510 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

可选地，如图15所示，通信设备1500还可以包括存储器1520。其中，处理器1510可以从存储器1520中调用并运行计算机程序，以实现本申请实施例中的方法。Optionally, as shown in FIG. 15 , the communication device 1500 may further include a memory 1520 . Wherein, the processor 1510 can invoke and run a computer program from the memory 1520, so as to implement the method in the embodiment of the present application.

其中，存储器1520可以是独立于处理器1510的一个单独的器件，也可以集成在处理器1510中。Wherein, the memory 1520 may be an independent device independent of the processor 1510 , or may be integrated in the processor 1510 .

可选地，如图15所示，通信设备1500还可以包括收发器1530，处理器1510可以控制该收发器1530与其他设备进行通信，具体地，可以向其他设备发送信息或数据，或接收其他设备发送的信息或数据。Optionally, as shown in FIG. 15, the communication device 1500 may further include a transceiver 1530, and the processor 1510 may control the transceiver 1530 to communicate with other devices, specifically, to send information or data to other devices, or receive other Information or data sent by the device.

其中，收发器1530可以包括发射机和接收机。收发器1530还可以进一步包括天线，天线的数量可以为一个或多个。Wherein, the transceiver 1530 may include a transmitter and a receiver. The transceiver 1530 may further include antennas, and the number of antennas may be one or more.

该通信设备1500具体可为本申请实施例的第一终端设备或第二终端设备，并且该通信设备1500可以实现本申请实施例的各个方法中由第一终端设备或第二终端设备实现的相应流程，为了简洁，在此不再赘述。The communication device 1500 can specifically be the first terminal device or the second terminal device in the embodiment of the present application, and the communication device 1500 can implement the corresponding functions implemented by the first terminal device or the second terminal device in the various methods of the embodiments of the present application. For the sake of brevity, the process will not be repeated here.

图16是本申请实施例的芯片的示意性结构图。图16所示的芯片1600包括处理器1610，处理器1610可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。FIG. 16 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 1600 shown in FIG. 16 includes a processor 1610, and the processor 1610 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

可选地，如图16所示，芯片1600还可以包括存储器1620。其中，处理器1610可以从存储器1620中调用并运行计算机程序，以实现本申请实施例中的方法。Optionally, as shown in FIG. 16 , the chip 1600 may further include a memory 1620 . Wherein, the processor 1610 can invoke and run a computer program from the memory 1620, so as to implement the method in the embodiment of the present application.

其中，存储器1620可以是独立于处理器1610的一个单独的器件，也可以集成在处理器1610中。Wherein, the memory 1620 may be an independent device independent of the processor 1610 , or may be integrated in the processor 1610 .

可选地，该芯片1600还可以包括输入接口1630。其中，处理器1610可以控制该输入接口1630与其他设备或芯片进行通信，具体地，可以获取其他设备或芯片发送的信息或数据。Optionally, the chip 1600 may also include an input interface 1630 . Wherein, the processor 1610 can control the input interface 1630 to communicate with other devices or chips, specifically, can obtain information or data sent by other devices or chips.

可选地，该芯片1600还可以包括输出接口1640。其中，处理器1610可以控制该输出接口1640与其他设备或芯片进行通信，具体地，可以向其他设备或芯片输出信息或数据。Optionally, the chip 1600 may also include an output interface 1640 . Wherein, the processor 1610 can control the output interface 1640 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.

该芯片可应用于本申请实施例中的第一终端设备或第二终端设备，并且该芯片可以实现本申请实施例的各个方法中由第一终端设备或第二终端设备实现的相应流程，为了简洁，在此不再赘述。The chip can be applied to the first terminal device or the second terminal device in the embodiments of the present application, and the chip can realize the corresponding processes implemented by the first terminal device or the second terminal device in the various methods of the embodiments of the present application, in order It is concise and will not be 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 embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.

应理解，本申请实施例的处理器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，上述方法实施例的各步骤可以通过处理器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存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。It should be understood that the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software. The above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Program logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

可以理解，本申请实施例中的存储器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，DDR SDRAM)、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，DR RAM)。应注意，本文描述的***和方法的存储器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 in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. 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), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash. The volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, 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, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM ) and Direct Memory Bus Random Access Memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

应理解，上述存储器为示例性但不是限制性说明，例如，本申请实施例中的存储器还可以是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，DDR SDRAM)、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(synch link DRAM，SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)等等。也就是说，本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。It should be understood that the above-mentioned memory is illustrative but not restrictive. For example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a 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, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

本申请实施例还提供了一种计算机可读存储介质，用于存储计算机程序。该计算机可读存储介质可应用于本申请实施例中的第一终端设备或第二终端设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由第一终端设备或第二终端设备实现的相应流程，为了简洁，在此不再赘述。The embodiment of the present application also provides a computer-readable storage medium for storing computer programs. The computer-readable storage medium can be applied to the first terminal device or the second terminal device in the embodiments of the present application, and the computer program enables the computer to execute the various methods in the embodiments of the present application by the first terminal device or the second terminal device For the sake of brevity, the corresponding process of implementation is not repeated here.

本申请实施例还提供了一种计算机程序产品，包括计算机程序指令。该计算机程序产品可应用于本申请实施例中的第一终端设备或第二终端设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由第一终端设备或第二终端设备实现的相应流程，为了简洁，在此不再赘述。The embodiment of the present application also provides a computer program product, including computer program instructions. The computer program product can be applied to the first terminal device or the second terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the various methods in the embodiments of the present application to be realized by the first terminal device or the second terminal device For the sake of brevity, the corresponding process will not be repeated here.

本申请实施例还提供了一种计算机程序。该计算机程序可应用于本申请实施例中的第一终端设备或第二终端设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由第一终端设备或第二终端设备实现的相应流程，为了简洁，在此不再赘述。The embodiment of the present application also provides a computer program. The computer program can be applied to the first terminal device or the second terminal device in the embodiment of the present application. When the computer program is run on the computer, the computer can execute the various methods in the embodiments of the present application by the first terminal device or the second terminal device. For the sake of brevity, the corresponding processes of the implementation of the second terminal device will not be repeated here.

本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的***、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

在本申请所提供的几个实施例中，应该理解到，所揭露的***、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个***，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。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或者该技术方案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中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，)ROM、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disc, etc., which can store program codes. .

以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

一种侧行传输方法，所述方法包括：A lateral transmission method, the method comprising:

第一终端设备使用第一缺省空域发送滤波器向第二终端设备发送第一侧行传输，和/或使用第一缺省空域接收滤波器接收所述第二终端设备发送的第二侧行传输。The first terminal device sends the first sidelink transmission to the second terminal device using the first default airspace transmit filter, and/or receives the second sidelink transmission sent by the second terminal device using the first default spacespace receive filter transmission.
根据权利要求1所述的方法，其中，所述第一终端设备使用第一缺省空域发送滤波器向第二终端设备发送第一侧行传输，包括：The method according to claim 1, wherein the first terminal device sends the first sidelink transmission to the second terminal device using a first default airspace transmit filter, comprising:

所述第一终端设备使用第一缺省空域发送滤波器向第二终端设备发送侧行链路建立请求消息，所述侧行链路建立请求消息用于请求建立所述第一终端设备与所述第二终端设备之间的单播链路。The first terminal device uses the first default airspace transmission filter to send a sidelink establishment request message to the second terminal device, and the sidelink establishment request message is used to request establishment of the connection between the first terminal device and the The unicast link between the second terminal devices is described above.
根据权利要求2所述的方法，其中，所述使用第一缺省空域接收滤波器接收所述第二终端设备发送的第二侧行传输，包括：The method according to claim 2, wherein the receiving the second sidelink transmission sent by the second terminal device using the first default spatial reception filter comprises:

所述第一终端设备使用第一缺省空域接收滤波器接收所述第二终端设备发送的侧行链路建立接受消息，所述侧行链路建立接受消息用于指示所述第二终端设备接受所述第一终端设备的侧行链路建立请求；或者，The first terminal device uses the first default airspace receiving filter to receive the sidelink establishment acceptance message sent by the second terminal equipment, and the sidelink establishment acceptance message is used to indicate that the second terminal equipment accepting the sidelink establishment request of the first terminal device; or,

所述第一终端设备使用第一缺省空域接收滤波器接收所述第二终端设备发送的侧行链路建立拒绝消息，所述侧行链路建立拒绝消息用于指示所述第二终端设备拒绝所述第一终端设备的侧行链路建立请求。The first terminal device uses the first default airspace reception filter to receive the sidelink establishment rejection message sent by the second terminal device, and the sidelink establishment rejection message is used to indicate that the second terminal device Rejecting the sidelink establishment request of the first terminal device.
根据权利要求1所述的方法，其中，所述第一终端设备使用第一缺省空域发送滤波器向第二终端设备发送第一侧行传输，包括：The method according to claim 1, wherein the first terminal device sends the first sidelink transmission to the second terminal device using a first default airspace transmit filter, comprising:

所述第一终端设备使用第一缺省空域发送滤波器向第二终端设备发送侧行无线资源控制RRC重配置消息，所述侧行RRC重配置消息用于重配置所述第一终端设备与所述第二终端设备之间的侧行RRC连接。The first terminal device uses the first default airspace transmission filter to send a sidelink radio resource control RRC reconfiguration message to the second terminal device, and the sidelink RRC reconfiguration message is used to reconfigure the first terminal device and A side row RRC connection between the second terminal devices.
根据权利要求4所述的方法，其中，所述使用第一缺省空域接收滤波器接收所述第二终端设备发送的第二侧行传输，包括：The method according to claim 4, wherein the receiving the second sidelink transmission sent by the second terminal device using the first default spatial reception filter comprises:

所述第一终端设备使用第一缺省空域接收滤波器接收所述第二终端设备发送的侧行RRC重配置完成消息，所述侧行RRC重配置完成消息用于指示所述第一终端设备与所述第二终端设备之间的侧行RRC连接重配置完成；或者，The first terminal device uses the first default airspace receiving filter to receive the side RRC reconfiguration complete message sent by the second terminal device, and the side RRC reconfiguration complete message is used to indicate that the first terminal device The reconfiguration of the side RRC connection with the second terminal device is completed; or,

所述第一终端设备使用第一缺省空域接收滤波器接收所述第二终端设备发送的侧行RRC重配置失败消息，所述侧行RRC重配置失败消息用于指示所述第一终端设备与所述第二终端设备之间的侧行RRC连接重配置失败。The first terminal device uses the first default airspace reception filter to receive the side RRC reconfiguration failure message sent by the second terminal device, and the side RRC reconfiguration failure message is used to indicate that the first terminal device The reconfiguration of the side RRC connection with the second terminal device fails.
根据权利要求5所述的方法，其中，所述方法还包括：The method according to claim 5, wherein the method further comprises:

若所述第一终端设备接收到侧行RRC重配置失败消息，则所述第一终端设备使用所述第一缺省空域发送滤波器向第二终端设备发送单播链路连接请求消息，所述单播链路连接请求消息用于请求重新建立单播链路。If the first terminal device receives a sidelink RRC reconfiguration failure message, the first terminal device uses the first default airspace transmission filter to send a unicast link connection request message to the second terminal device, so The above unicast link connection request message is used to request to re-establish the unicast link.
根据权利要求1所述的方法，其中，所述第一终端设备使用第一缺省空域发送滤波器向第二终端设备发送第一侧行传输，包括：The method according to claim 1, wherein the first terminal device sends the first sidelink transmission to the second terminal device using a first default airspace transmit filter, comprising:

所述第一终端设备使用第一缺省空域发送滤波器向第二终端设备发送携带第一指示信息的第一侧行传输，所述第一指示信息用于指示进行所述第一终端设备的空域发送滤波器的选取过程和/或所述第二终端设备的空域接收滤波器的选取过程。The first terminal device uses the first default airspace transmission filter to send to the second terminal device a first sidelink transmission carrying first indication information, where the first indication information is used to instruct the first terminal device to transmit A process of selecting a spatial domain transmit filter and/or a process of selecting a spatial domain receive filter of the second terminal device.
根据权利要求7所述的方法，其中，所述方法还包括：所述第一指示信息指示进行所述第一终端设备的空域发送滤波器的选取过程的情况下，The method according to claim 7, wherein the method further comprises: when the first indication information indicates that the selection process of the airspace transmission filter of the first terminal device is performed,

所述第一终端设备使用多个空域发送滤波器向所述第二终端设备发送参考信号；The first terminal device sends a reference signal to the second terminal device by using a plurality of spatial transmission filters;

所述第一终端设备接收所述第二终端设备发送的针对所述参考信号测量的反馈信息；receiving, by the first terminal device, feedback information for the reference signal measurement sent by the second terminal device;

所述第一终端设备基于所述反馈信息从所述多个空域发送滤波器中选取一个空域发送滤波器作为目标空域发送滤波器，或者基于所述反馈信息确定目标空域发送滤波器。The first terminal device selects a spatial transmission filter from the plurality of spatial transmission filters as a target spatial transmission filter based on the feedback information, or determines a target spatial transmission filter based on the feedback information.
根据权利要求7所述的方法，其中，所述方法还包括：所述第一指示信息指示进行所述第二终端设备的空域接收滤波器的选取过程的情况下，The method according to claim 7, wherein the method further comprises: when the first indication information indicates that the selection process of the spatial receiving filter of the second terminal device is performed,

所述第一终端设备使用相同的空域发送滤波器向所述第二终端设备发送参考信号，所述参考信号被所述第二终端设备使用多个空域接收滤波器接收并测量，所述参考信号的测量结果用于所述第二终端设备从所述多个空域接收滤波器中选取一个空域接收滤波器作为目标空域接收滤波器。The first terminal device sends a reference signal to the second terminal device using the same spatial domain transmit filter, the reference signal is received and measured by the second terminal device using multiple spatial domain receive filters, and the reference signal The measurement result of is used by the second terminal device to select a spatial domain reception filter from the plurality of spatial domain reception filters as a target spatial domain reception filter.
根据权利要求8或9所述的方法，其中，所述参考信号为侧行信道状态信息-参考信号CSI-RS。The method according to claim 8 or 9, wherein the reference signal is a side channel state information-reference signal CSI-RS.
根据权利要求1所述的方法，其中，所述第一终端设备使用第一缺省空域发送滤波器向第二终端设备发送第一侧行传输，包括：The method according to claim 1, wherein the first terminal device sends the first sidelink transmission to the second terminal device using a first default airspace transmit filter, comprising:

所述第一终端设备使用第一缺省空域发送滤波器向第二终端设备发送携带第二指示信息的第一侧行传输，所述第二指示信息用于确定所述第一终端设备选取的目标空域发送滤波器，或者，所述第二指示信息用于指示所述第一终端设备在第一时刻之后使用所述目标空域发送滤波器进行侧行传输。The first terminal device uses the first default airspace transmission filter to send to the second terminal device a first sidelink transmission carrying second indication information, where the second indication information is used to determine the The target airspace transmit filter, or, the second indication information is used to instruct the first terminal device to use the target airspace transmit filter to perform sidelink transmission after the first moment.
根据权利要求11所述的方法，其中，所述第一时刻基于第一时长确定，所述第一时长是根据预定义信息确定的，或者，所述第一时长是根据预配置信息确定的，或者，所述第一时长是根据网络配置信息确定的，或者，所述第一时长是根据所述第一终端设备发送的第三指示信息确定的。The method according to claim 11, wherein the first moment is determined based on a first duration, and the first duration is determined according to predefined information, or, the first duration is determined according to preconfigured information, Or, the first duration is determined according to network configuration information, or, the first duration is determined according to third indication information sent by the first terminal device.
根据权利要求12所述的方法，其中，所述第一侧行传输的结束位置用于确定第二时刻，所述第一时刻和所述第二时刻之间的时间间隔大于或等于所述第一时长，所述第二时刻位于所示第一时刻之前。The method of claim 12, wherein the end position of the first sidebound transmission is used to determine a second time interval, and the time interval between the first time point and the second time point is greater than or equal to the first time point For a period of time, the second moment is located before the first moment shown.
根据权利要求13所述的方法，其中，所述第一终端设备在所述时间间隔期间使用所述第一缺省空域发送滤波器进行侧行传输。The method of claim 13, wherein the first terminal device uses the first default spatial transmit filter for sidelink transmissions during the time interval.
根据权利要求13或14所述的方法，其中，A method according to claim 13 or 14, wherein,

所述第一侧行传输的结束位置对应于所述第一侧行传输所在时隙的结束位置；或者，The end position of the first sideline transmission corresponds to the end position of the time slot where the first sideline transmission is located; or,

所述第一侧行传输的结束位置对应于所述第一侧行传输占据的最后一个时域符号的结束位置；或者，The end position of the first side row transmission corresponds to the end position of the last time domain symbol occupied by the first side row transmission; or,

所述第一侧行传输的结束位置对应于所述第一侧行传输调度的第三侧行传输占据的最后一个时域符号的结束位置。The end position of the first sideline transmission corresponds to the end position of the last time-domain symbol occupied by the third sideline transmission scheduled by the first sideline transmission.
根据权利要求13至15中任一项所述的方法，其中，A method according to any one of claims 13 to 15, wherein,

若所述第二指示信息携带在第一阶侧行控制信息SCI中，则所述第一侧行传输的结束位置对应于物理侧行控制信道PSCCH的最后一个时域符号的结束位置，或者对应于所述PSCCH调度的物理侧行共享信道PSSCH的最后一个时域符号的结束位置；If the second indication information is carried in the first-order sidelink control information SCI, the end position of the first sidelink transmission corresponds to the end position of the last time domain symbol of the physical sidelink control channel PSCCH, or corresponds to The end position of the last time domain symbol of the physical sidelink shared channel PSSCH scheduled by the PSCCH;

若所述第二指示信息承载在第二阶SCI中，则所述第一侧行传输的结束位置对应于所述第二阶SCI的最后一个时域符号的结束位置，或者对应于PSCCH调度的PSSCH的最后一个时域符号的结束位置；If the second indication information is carried in the second-order SCI, the end position of the first sidelink transmission corresponds to the end position of the last time domain symbol of the second-order SCI, or corresponds to the end position of the PSCCH scheduled The end position of the last time domain symbol of PSSCH;

若所述第二指示信息承载在媒体接入控制MAC控制单元CE中，则所述第一侧行传输的结束位置对应于承载所述MAC CE的PSSCH的最后一个时域符号的结束位置；If the second indication information is carried in the medium access control MAC control unit CE, the end position of the first sidelink transmission corresponds to the end position of the last time domain symbol of the PSSCH carrying the MAC CE;

若所述第二指示信息承载在PC5-RRC信令中，则所述第一侧行传输的结束位置对应于承载所述PC5-RRC信令的PSSCH的最后一个时域符号的结束位置；If the second indication information is carried in PC5-RRC signaling, the end position of the first sidelink transmission corresponds to the end position of the last time domain symbol of the PSSCH carrying the PC5-RRC signaling;

其中，所述第一阶SCI承载于所述PSCCH中。Wherein, the first-order SCI is carried in the PSCCH.
根据权利要求11至16中任一项所述方法，其中，A method according to any one of claims 11 to 16, wherein,

若所述第二指示信息承载在第一阶SCI、第二阶SCI或MAC CE中，所述第一终端设备向第二终端设备发送携带所述第二指示信息的第一侧行传输时激活侧行反馈。If the second indication information is carried in the first-order SCI, the second-order SCI or the MAC CE, when the first terminal device sends the first sidelink transmission carrying the second indication information to the second terminal device, activate sideways feedback.
根据权利要求11至17中任一项所述的方法，其中，所述第一终端设备使用第一缺省空域发送滤波器向第二终端设备发送携带第二指示信息的第一侧行传输，包括：The method according to any one of claims 11 to 17, wherein the first terminal device uses the first default airspace transmission filter to send the first sidelink transmission carrying the second indication information to the second terminal device, include:

所述第一终端设备确定当前波束失效的情况下，使用第一缺省空域发送滤波器向第二终端设备发送携带第二指示信息的第一侧行传输。In a case where the first terminal device determines that the current beam is invalid, it uses the first default airspace transmission filter to send the first sidelink transmission carrying the second indication information to the second terminal device.
根据权利要求18所述的方法，其中，所述方法还包括：The method according to claim 18, wherein said method further comprises:

所述第一终端设备通过第一缺省空域接收滤波器接接收所述第二终端设备发送的第四指示信息，所述第四指示信息用于指示当前波束失效；The first terminal device receives fourth indication information sent by the second terminal device through the first default airspace receiving filter, where the fourth indication information is used to indicate that the current beam is invalid;

所述第一终端设备确定当前波束失效，包括：所述第一终端设备基于所述第四指示信息确定当前波束失效。The determining, by the first terminal device, that the current beam is invalid includes: determining, by the first terminal device, that the current beam is invalid based on the fourth indication information.
根据权利要求1所述的方法，其中，所述第一终端设备使用第一缺省空域发送滤波器向第二终端设备发送第一侧行传输，包括：The method of claim 1, wherein the first terminal device sends the first sidelink transmission to the second terminal device using a first default spatial transmit filter, comprising:

所述第一终端设备确定当前单播链路失效的情况下，使用第一缺省空域发送滤波器向第二终端设备发送单播链路连接请求消息，所述单播链路连接请求消息用于请求建立单播链路。When the first terminal device determines that the current unicast link fails, it uses the first default airspace transmission filter to send a unicast link connection request message to the second terminal device, and the unicast link connection request message uses to request the establishment of a unicast link.
根据权利要求1至20中任一项所述的方法，其中，A method according to any one of claims 1 to 20, wherein,

所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器对应于第一缺省传输配置指示TCI状态；或者，The first default spatial domain transmit filter and/or the first default spatial domain receive filter corresponds to a first default transmission configuration indication TCI state; or,

所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器对应于第一缺省侧行CSI-RS资源。The first default spatial domain transmit filter and/or the first default spatial domain receive filter corresponds to a first default sidelink CSI-RS resource.
根据权利要求1至21中任一项所述的方法，其中，所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器基于预定义信息、预配置信息、网络配置信息中的至少之一确定。The method according to any one of claims 1 to 21, wherein the first default spatial domain transmit filter and/or the first default spatial domain receive filter is based on predefined information, preconfigured information, network At least one of the configuration information is determined.
根据权利要求1至21中任一项所述的方法，其中，所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器基于所述第一终端设备或者所述第二终端设备配置的第五指示信息确定，所述第五指示信息用于指示所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器。The method according to any one of claims 1 to 21, wherein the first default spatial domain transmit filter and/or the first default spatial domain receive filter is based on the first terminal device or the The fifth indication information configured by the second terminal device is determined, where the fifth indication information is used to indicate the first default airspace transmit filter and/or the first default airspace receive filter.
根据权利要求23所述的方法，其中，所述第五指示信息承载在SCI、或者MAC CE、或者PC5-RRC信令中。The method according to claim 23, wherein the fifth indication information is carried in SCI, or MAC CE, or PC5-RRC signaling.
根据权利要求23或24所述的方法，其中，所述方法还包括：The method according to claim 23 or 24, wherein the method further comprises:

所述第五指示信息被配置之前，所述第一终端设备使用第二缺省空域发送滤波器和/或第二缺省空域接收滤波器进行侧行传输。Before the fifth indication information is configured, the first terminal device uses the second default airspace transmit filter and/or the second default airspace receive filter to perform sidelink transmission.
根据权利要求25所述的方法，其中，所述第二缺省空域发送滤波器和/或所述第二缺省空域接收滤波器基于预定义信息、预配置信息、网络配置信息中的至少之一确定。The method according to claim 25, wherein the second default spatial domain transmit filter and/or the second default spatial domain receive filter is based on at least one of predefined information, preconfigured information, and network configuration information One sure.
根据权利要求25或26所述的方法，其中，所述方法还包括：The method according to claim 25 or 26, wherein the method further comprises:

若所述第一终端设备和所述第二终端设备之间的单播链路有效，则：If the unicast link between the first terminal device and the second terminal device is valid, then:

若所述第一终端设备通过所述第五指示信息向所述第二终端设备配置了所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器，则所述第一终端设备使用所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器进行侧行传输；If the first terminal device configures the first default airspace transmit filter and/or the first default airspace receive filter to the second terminal device through the fifth indication information, the The first terminal device uses the first default airspace transmit filter and/or the first default airspace receive filter to perform sidelink transmission;

若所述第一终端设备未通过所述第五指示信息向所述第二终端设备配置所述第一缺省空域发送滤波器和/或所述第一缺省空域接收滤波器，则所述第一终端设备使用所述第二缺省空域发送滤波器和/或所述第二缺省空域接收滤波器进行侧行传输。If the first terminal device does not configure the first default airspace transmit filter and/or the first default airspace receive filter to the second terminal device through the fifth indication information, the The first terminal device uses the second default airspace transmit filter and/or the second default airspace receive filter to perform sidelink transmission.
根据权利要求25或26所述的方法，其中，所述方法还包括：The method according to claim 25 or 26, wherein the method further comprises:

若所述第一终端设备和所述第二终端设备之间的单播链路无效，则所述第一终端设备使用所述第二缺省空域发送滤波器和/或所述第二缺省空域接收滤波器进行侧行传输。If the unicast link between the first terminal device and the second terminal device is invalid, the first terminal device uses the second default airspace transmit filter and/or the second default Spatial receive filter for sidelink transmission.
一种侧行传输方法，所述方法包括：A lateral transmission method, the method comprising:

第二终端设备使用第三缺省空域接收滤波器接收第一终端设备发送的第一侧行传输，和/或使用第三缺省空域发送滤波器向所述第一终端设备发送第二侧行传输。The second terminal device receives the first sidelink transmission sent by the first terminal device using the third default airspace receive filter, and/or transmits the second sidelink transmission to the first terminal device using the third default spacespace transmit filter transmission.
根据权利要求29所述的方法，其中，所述第二终端设备使用第三缺省空域接收滤波器接收第一终端设备发送的第一侧行传输，包括：The method according to claim 29, wherein the second terminal device uses a third default airspace reception filter to receive the first sidelink transmission sent by the first terminal device, comprising:

所述第二终端设备使用第三缺省空域接收滤波器接收第一终端设备发送的侧行链路建立请求消息，所述侧行链路建立请求消息用于请求建立所述第一终端设备与所述第二终端设备之间的单播链路。The second terminal device uses the third default airspace receiving filter to receive the sidelink establishment request message sent by the first terminal device, and the sidelink establishment request message is used to request to establish the connection between the first terminal device and A unicast link between the second terminal devices.
根据权利要求30所述的方法，其中，所述使用第三缺省空域发送滤波器向所述第一终端设备发送第二侧行传输，包括：The method of claim 30, wherein the sending the second sidelink transmission to the first terminal device using a third default spatial transmit filter comprises:

所述第二终端设备使用第三缺省空域发送滤波器向所述第一终端设备发送侧行链路建立接受消息，所述侧行链路建立接受消息用于指示所述第二终端设备接受所述第一终端设备的侧行链路建立请求；或者，The second terminal device uses a third default airspace transmission filter to send a sidelink establishment acceptance message to the first terminal equipment, where the sidelink establishment acceptance message is used to indicate that the second terminal equipment accepts A sidelink establishment request of the first terminal device; or,

所述第二终端设备使用第三缺省空域发送滤波器向所述第一终端设备发送侧行链路建立拒绝消息，所述侧行链路建立拒绝消息用于指示所述第二终端设备拒绝所述第一终端设备的侧行链路建立请求。The second terminal device uses the third default airspace transmission filter to send a sidelink establishment rejection message to the first terminal device, and the sidelink establishment rejection message is used to indicate that the second terminal device rejects A sidelink establishment request of the first terminal device.
根据权利要求29所述的方法，其中，所述第二终端设备使用第三缺省空域接收滤波器接收第一终端设备发送的第一侧行传输，包括：The method according to claim 29, wherein the second terminal device uses a third default airspace reception filter to receive the first sidelink transmission sent by the first terminal device, comprising:

所述第二终端设备使用第三缺省空域接收滤波器接收第一终端设备发送的侧行RRC重配置消息，所述侧行RRC重配置消息用于重配置所述第一终端设备与所述第二终端设备之间的侧行RRC连接。The second terminal device uses the third default airspace receiving filter to receive the side RRC reconfiguration message sent by the first terminal device, and the side RRC reconfiguration message is used to reconfigure the first terminal device and the A side row RRC connection between the second terminal equipment.
根据权利要求32所述的方法，其中，所述使用第三缺省空域发送滤波器向所述第一终端设备发送第二侧行传输，包括：The method of claim 32, wherein the sending the second sidelink transmission to the first terminal device using a third default spatial transmit filter comprises:

所述第二终端设备使用第三缺省空域发送滤波器向所述第一终端设备发送侧行RRC重配置完成消息，所述侧行RRC重配置完成消息用于指示所述第一终端设备与所述第二终端设备之间的侧行RRC连接重配置完成；或者，The second terminal device sends a side RRC reconfiguration complete message to the first terminal device by using the third default airspace transmission filter, and the side RRC reconfiguration complete message is used to indicate that the first terminal device is connected with The reconfiguration of the side RRC connection between the second terminal devices is completed; or,

所述第二终端设备使用第三缺省空域发送滤波器向所述第一终端设备发送侧行RRC重配置失败消息，所述侧行RRC重配置失败消息用于指示所述第一终端设备与所述第二终端设备之间的侧行RRC连接重配置失败。The second terminal device sends a side RRC reconfiguration failure message to the first terminal device by using a third default airspace transmission filter, and the side RRC reconfiguration failure message is used to indicate that the first terminal device is not compatible with The reconfiguration of the side RRC connection between the second terminal equipment fails.
根据权利要求33所述的方法，其中，所述第二终端设备使用第三缺省空域发送滤波器向所述第一终端设备发送侧行RRC重配置失败消息的情况下，所述方法还包括：The method according to claim 33, wherein, when the second terminal device uses the third default airspace transmission filter to send a sidelink RRC reconfiguration failure message to the first terminal device, the method further comprises :

所述第二终端设备使用第三缺省空域接收滤波器接收第一终端设备发送的单播链路连接请求消息，所述单播链路连接请求消息用于请求重新建立单播链路。The second terminal device uses the third default airspace receiving filter to receive the unicast link connection request message sent by the first terminal device, where the unicast link connection request message is used to request re-establishment of the unicast link.
根据权利要求29所述的方法，其中，所述第二终端设备使用第三缺省空域接收滤波器接收第一终端设备发送的第一侧行传输，包括：The method according to claim 29, wherein the second terminal device uses a third default airspace reception filter to receive the first sidelink transmission sent by the first terminal device, comprising:

所述第二终端设备使用第三缺省空域接收滤波器接收第一终端设备发送的携带第一指示信息的第一侧行传输，所述第一指示信息用于指示进行所述第一终端设备的空域发送滤波器的选取过程和/或所述第二终端设备的空域接收滤波器的选取过程。The second terminal device uses the third default airspace receiving filter to receive the first sidelink transmission carrying the first indication information sent by the first terminal device, and the first indication information is used to instruct the first terminal device to perform The selection process of the spatial domain transmit filter and/or the selection process of the spatial domain receive filter of the second terminal device.
根据权利要求35所述的方法，其中，所述方法还包括：所述第一指示信息指示进行所述第一终端设备的空域发送滤波器的选取过程的情况下，The method according to claim 35, wherein the method further comprises: when the first indication information indicates that the selection process of the airspace transmission filter of the first terminal device is performed,

所述第二终端设备接收所述第一终端设备使用多个空域发送滤波器发送的参考信号，对所述参考信号进行测量；receiving, by the second terminal device, reference signals sent by the first terminal device using a plurality of spatial transmission filters, and measuring the reference signals;

所述第二终端设备向所述第一终端设备发送针对所述参考信号测量的反馈信息，所述反馈信息用于所述第一终端设备从所述多个空域发送滤波器中选取一个空域发送滤波器作为目标空域发送滤波器，或者用于所述第一终端设备确定目标空域发送滤波器。The second terminal device sends feedback information for the reference signal measurement to the first terminal device, and the feedback information is used for the first terminal device to select one airspace transmission filter from the plurality of airspace transmission filters The filter serves as a target airspace transmission filter, or is used by the first terminal device to determine a target airspace transmission filter.
根据权利要求35所述的方法，其中，所述方法还包括：所述第一指示信息指示进行所述第二终端设备的空域接收滤波器的选取过程的情况下，The method according to claim 35, wherein the method further comprises: when the first indication information indicates that the selection process of the spatial receiving filter of the second terminal device is performed,

所述第二终端设备使用多个空域接收滤波器接收所述第一终端设备发送的考信号，对所述参考信号进行测量；The second terminal device uses a plurality of spatial domain receiving filters to receive the reference signal sent by the first terminal device, and measures the reference signal;

所述第二终端设备基于所述参考信号的测量结果从所述多个空域接收滤波器中选取一个空域接收滤波器作为目标空域接收滤波器。The second terminal device selects one spatial domain reception filter from the plurality of spatial domain reception filters as the target spatial domain reception filter based on the measurement result of the reference signal.
根据权利要求36或37所述的方法，其中，所述参考信号为侧行CSI-RS。The method according to claim 36 or 37, wherein the reference signal is a side row CSI-RS.
根据权利要求29所述的方法，其中，所述第二终端设备使用第三缺省空域接收滤波器接收第一终端设备发送的第一侧行传输，包括：The method according to claim 29, wherein the second terminal device uses a third default airspace reception filter to receive the first sidelink transmission sent by the first terminal device, comprising:

所述第二终端设备使用第三缺省空域接收滤波器接收第一终端设备发送的携带第二指示信息的第一侧行传输，所述第二指示信息用于确定所述第一终端设备选取的目标空域发送滤波器，或者，所述第二指示信息用于指示所述第一终端设备在第一时刻之后使用所述目标空域发送滤波器进行侧行传输。The second terminal device uses the third default airspace receiving filter to receive the first sidelink transmission that is sent by the first terminal device and carries the second indication information, and the second indication information is used to determine whether the first terminal device selects The target airspace transmit filter, or the second indication information is used to instruct the first terminal device to use the target airspace transmit filter to perform sidelink transmission after the first moment.
根据权利要求39所述的方法，其中，所述第一时刻基于第一时长确定，所述第一时长是根据预定义信息确定的，或者，所述第一时长是根据预配置信息确定的，或者，所述第一时长是根据网络配置信息确定的，或者，所述第一时长是根据所述第一终端设备发送的第三指示信息确定的。The method according to claim 39, wherein the first moment is determined based on a first duration, and the first duration is determined according to predefined information, or, the first duration is determined according to preconfigured information, Or, the first duration is determined according to network configuration information, or, the first duration is determined according to third indication information sent by the first terminal device.
根据权利要求40所述的方法，其中，所述第一侧行传输的结束位置用于确定第二时刻，所述第一时刻和所述第二时刻之间的时间间隔大于或等于所述第一时长，所述第二时刻位于所示第一时刻之前。The method of claim 40, wherein the end location of the first lateral transmission is used to determine a second time interval, the time interval between the first time point and the second time point being greater than or equal to the second time point For a period of time, the second moment is located before the first moment shown.
根据权利要求41所述的方法，其中，所述第一终端设备在所述时间间隔期间使用所述第三缺省空域接收滤波器进行侧行传输。41. The method of claim 41, wherein the first terminal device uses the third default spatial receive filter for sidelink transmissions during the time interval.
根据权利要求41或42所述的方法，其中，A method according to claim 41 or 42, wherein,

所述第一侧行传输的结束位置对应于所述第一侧行传输所在时隙的结束位置；或者，The end position of the first sideline transmission corresponds to the end position of the time slot where the first sideline transmission is located; or,

所述第一侧行传输的结束位置对应于所述第一侧行传输占据的最后一个时域符号的结束位置；或者，The end position of the first side row transmission corresponds to the end position of the last time domain symbol occupied by the first side row transmission; or,

所述第一侧行传输的结束位置对应于所述第一侧行传输调度的第三侧行传输占据的最后一个时域符号的结束位置。The end position of the first sideline transmission corresponds to the end position of the last time-domain symbol occupied by the third sideline transmission scheduled by the first sideline transmission.
根据权利要求41至43中任一项所述的方法，其中，A method according to any one of claims 41 to 43, wherein,

若所述第二指示信息携带在第一阶SCI中，则所述第一侧行传输的结束位置对应于PSCCH的最后一个时域符号的结束位置，或者对应于所述PSCCH调度的PSSCH的最后一个时域符号的结束位置；If the second indication information is carried in the first-order SCI, the end position of the first sideline transmission corresponds to the end position of the last time domain symbol of the PSCCH, or corresponds to the end position of the PSSCH scheduled by the PSCCH the end position of a time domain symbol;

若所述第二指示信息承载在第二阶SCI中，则所述第一侧行传输的结束位置对应于所述第二阶SCI的最后一个时域符号的结束位置，或者对应于PSCCH调度的PSSCH的最后一个时域符号的结束位置；If the second indication information is carried in the second-order SCI, the end position of the first sidelink transmission corresponds to the end position of the last time domain symbol of the second-order SCI, or corresponds to the end position of the PSCCH scheduled The end position of the last time domain symbol of PSSCH;

若所述第二指示信息承载在MAC CE中，则所述第一侧行传输的结束位置对应于承载所述MAC CE的PSSCH的最后一个时域符号的结束位置；If the second indication information is carried in the MAC CE, the end position of the first sideline transmission corresponds to the end position of the last time domain symbol of the PSSCH carrying the MAC CE;

若所述第二指示信息承载在PC5-RRC信令中，则所述第一侧行传输的结束位置对应于承载所述PC5-RRC信令的PSSCH的最后一个时域符号的结束位置；If the second indication information is carried in PC5-RRC signaling, the end position of the first sidelink transmission corresponds to the end position of the last time domain symbol of the PSSCH carrying the PC5-RRC signaling;

其中，所述第一阶SCI承载于所述PSCCH中。Wherein, the first-order SCI is carried in the PSCCH.
根据权利要求39至44中任一项所述的方法，其中，若所述第二指示信息承载在第一阶SCI、第二阶SCI或MAC CE中，所述第二终端设备接收第一终端设备发送的携带所述第二指示信息的第一侧行传输时激活侧行反馈。The method according to any one of claims 39 to 44, wherein, if the second indication information is carried in the first-order SCI, second-order SCI or MAC CE, the second terminal device receives the first terminal The sidelink feedback is activated during the first sidelink transmission sent by the device and carrying the second indication information.
根据权利要求39至45中任一项所述的方法，其中，所述第二终端设备使用第三缺省空域接收滤波器接收第一终端设备发送的携带第二指示信息的第一侧行传输，包括：The method according to any one of claims 39 to 45, wherein the second terminal device uses a third default airspace receiving filter to receive the first sidelink transmission carrying the second indication information sent by the first terminal device ,include:

在当前波束失效的情况下，所述第二终端设备使用第三缺省空域接收滤波器接收第一终端设备发送的携带第二指示信息的第一侧行传输。In the case that the current beam fails, the second terminal device receives the first sidelink transmission carrying the second indication information sent by the first terminal device by using the third default airspace receiving filter.
根据权利要求46所述的方法，其中，所述方法还包括：The method of claim 46, wherein the method further comprises:

所述第二终端设备使用第三缺省空域发送滤波器向所述第一终端设备发送第四指示信息，所述第四指示信息用于指示当前波束失效。The second terminal device sends fourth indication information to the first terminal device by using the third default airspace transmission filter, where the fourth indication information is used to indicate that the current beam is invalid.
根据权利要求29所述的方法，其中，所述第二终端设备使用第三缺省空域接收滤波器接收第一终端设备发送的第一侧行传输，包括：The method according to claim 29, wherein the second terminal device uses a third default airspace reception filter to receive the first sidelink transmission sent by the first terminal device, comprising:

在单播链路失效的情况下，所述第二终端设备使用第三缺省空域接收滤波器接收第一终端设备发送的单播链路连接请求消息，所述单播链路连接请求消息用于请求建立单播链路。When the unicast link fails, the second terminal device uses the third default airspace receiving filter to receive the unicast link connection request message sent by the first terminal device, and the unicast link connection request message uses to request the establishment of a unicast link.
根据权利要求29至48中任一项所述的方法，其中，A method according to any one of claims 29 to 48, wherein,

所述第三缺省空域发送滤波器和/或所述第三缺省空域接收滤波器对应于第三缺省TCI状态；或者，said third default spatial transmit filter and/or said third default spatial receive filter corresponds to a third default TCI state; or,

所述第三缺省空域发送滤波器和/或所述第三缺省空域接收滤波器对应于第三缺省侧行CSI-RS资源。The third default spatial domain transmit filter and/or the third default spatial domain receive filter corresponds to a third default sidelink CSI-RS resource.
根据权利要求29至49中任一项所述的方法，其中，所述第三缺省空域发送滤波器和/或所述第三缺省空域接收滤波器基于预定义信息、预配置信息、网络配置信息中的至少之一确定。The method according to any one of claims 29 to 49, wherein the third default spatial domain transmit filter and/or the third default spatial domain receive filter is based on predefined information, preconfigured information, network At least one of the configuration information is determined.
根据权利要求29至49中任一项所述的方法，其中，所述第三缺省空域发送滤波器和/或所述第三缺省空域接收滤波器基于所述第一终端设备或者所述第二终端设备配置的第六指示信息确定，所述第六指示信息用于指示所述第三缺省空域发送滤波器和/或所述第三缺省空域接收滤波器。The method according to any one of claims 29 to 49, wherein the third default spatial domain transmit filter and/or the third default spatial domain receive filter is based on the first terminal device or the The sixth indication information configured by the second terminal device is determined, where the sixth indication information is used to indicate the third default airspace transmit filter and/or the third default airspace receive filter.
根据权利要求51所述的方法，其中，所述第六指示信息承载在SCI、或者MAC CE、或者PC5-RRC信令中。The method according to claim 51, wherein the sixth indication information is carried in SCI, or MAC CE, or PC5-RRC signaling.
根据权利要求51或52所述的方法，其中，所述方法还包括：The method according to claim 51 or 52, wherein the method further comprises:

所述第六指示信息被配置之前，所述第二终端设备使用第四缺省空域发送滤波器和/或第四缺省空域接收滤波器进行侧行传输。Before the sixth indication information is configured, the second terminal device uses the fourth default airspace transmit filter and/or the fourth default airspace receive filter to perform sidelink transmission.
根据权利要求53所述的方法，其中，所述第四缺省空域发送滤波器和/或所述第四缺省空域接收滤波器基于预定义信息、预配置信息、网络配置信息中的至少之一确定。The method according to claim 53, wherein the fourth default spatial domain transmit filter and/or the fourth default spatial domain receive filter is based on at least one of predefined information, preconfigured information, and network configuration information One sure.
根据权利要求53或54所述的方法，其中，所述方法还包括：The method according to claim 53 or 54, wherein the method further comprises:

若所述第二终端设备和所述第一终端设备之间的单播链路有效，则：If the unicast link between the second terminal device and the first terminal device is valid, then:

若所述第二终端设备通过所述第六指示信息向所述第二终端设备配置了所述第三缺省空域发送滤波器和/或所述第三缺省空域接收滤波器，则所述第一终端设备使用所述第三缺省空域发送滤波器和/或所述第三缺省空域接收滤波器进行侧行传输；If the second terminal device configures the third default airspace transmit filter and/or the third default airspace receive filter to the second terminal device through the sixth indication information, the The first terminal device uses the third default airspace transmit filter and/or the third default airspace receive filter to perform sidelink transmission;

若所述第一终端设备未通过所述第六指示信息向所述第二终端设备配置所述第三缺省空域发送滤波器和/或所述第三缺省空域接收滤波器，则所述第一终端设备使用所述第四缺省空域发送滤波器和/或所述第四缺省空域接收滤波器进行侧行传输。If the first terminal device does not configure the third default airspace transmit filter and/or the third default airspace receive filter to the second terminal device through the sixth indication information, the The first terminal device uses the fourth default airspace transmit filter and/or the fourth default airspace receive filter to perform sidelink transmission.
根据权利要求53或54所述的方法，其中，所述方法还包括：The method according to claim 53 or 54, wherein the method further comprises:

若所述第二终端设备和所述第一终端设备之间的单播链路无效，则所述第二终端设备使用所述第四缺省空域发送滤波器和/或所述第四缺省空域接收滤波器进行侧行传输。If the unicast link between the second terminal device and the first terminal device is invalid, the second terminal device uses the fourth default airspace transmit filter and/or the fourth default Spatial receive filter for sidelink transmission.
一种侧行传输装置，应用于第一终端设备，所述装置包括：A lateral transmission device, applied to a first terminal device, the device comprising:

传输单元，用于使用第一缺省空域发送滤波器向第二终端设备发送第一侧行传输，和/或使用第一缺省空域接收滤波器接收所述第二终端设备发送的第二侧行传输。A transmission unit, configured to use the first default airspace transmit filter to send the first sideline transmission to the second terminal device, and/or use the first default airspace receive filter to receive the second sideline transmission sent by the second terminal device Line transmission.
一种侧行传输装置，应用于第二终端设备，所述装置包括：A lateral transmission device, applied to a second terminal device, the device comprising:

传输单元，用于使用第三缺省空域接收滤波器接收第一终端设备发送的第一侧行传输，和/或使用第三缺省空域发送滤波器向所述第一终端设备发送第二侧行传输。A transmission unit, configured to use a third default airspace receiving filter to receive the first lateral transmission sent by the first terminal device, and/or use a third default airspace transmitting filter to send the second lateral transmission to the first terminal device Line transmission.
一种终端设备，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求1至28中任一项所述的方法，或者权利要求29至56中任一项所述的方法。A terminal device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to invoke and run the computer program stored in the memory, and execute the computer program described in any one of claims 1 to 28 , or a method as claimed in any one of claims 29 to 56.
一种芯片，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行如权利要求1至28中任一项所述的方法，或者权利要求29至56中任一项所述的方法。A chip, comprising: a processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 1 to 28, or claims 29 to 56 any one of the methods described.
一种计算机可读存储介质，用于存储计算机程序，所述计算机程序使得计算机执行如权利要求1至28中任一项所述的方法，或者权利要求29至56中任一项所述的方法。A computer-readable storage medium for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 28, or the method according to any one of claims 29 to 56 .
一种计算机程序产品，包括计算机程序指令，该计算机程序指令使得计算机执行如权利要求1至28中任一项所述的方法，或者权利要求29至56中任一项所述的方法。A computer program product, comprising computer program instructions, which cause a computer to execute the method according to any one of claims 1 to 28, or the method according to any one of claims 29 to 56.
一种计算机程序，所述计算机程序使得计算机执行如权利要求1至28中任一项所述的方法，或者权利要求29至56中任一项所述的方法。A computer program that causes a computer to execute the method according to any one of claims 1 to 28, or the method according to any one of claims 29 to 56.