Wireless communication method and device

Abstract

The embodiment of the invention provides a wireless communication method and device, and a communication device (such as a network device or a service relay terminal) configures at least one measurement event for switching between a first relay link and a second relay link for a remote terminal. The remote terminal may enable handover between the relay links based on the configured measurement event. The wireless communication method comprises the following steps: a far-end terminal receives first information; wherein the first information is used for configuring at least one measurement event, the at least one measurement event is a measurement event for switching between a first relay link and a second relay link, and both the first relay link and the second relay link are links for accessing a network by a remote terminal through a relay terminal.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communications, and more specifically, to a method and device for wireless communications. Background Art

[0002] The New Radio (NR) system introduces the switching of remote terminals between side relay links (i.e., links through which remote terminals access the network via relay terminals) and side relay links (i.e., links through which remote terminals access the network via relay terminals). How the remote terminals report measurement results so that network devices can determine whether to perform switching between side relay links is a problem that needs to be solved. Summary of the invention

[0003] An embodiment of the present application provides a method and device for wireless communication, in which a communication device (such as a network device or a service relay terminal) configures at least one measurement event for switching between a first relay link and a second relay link for a remote terminal, so that the remote terminal can report the measurement result based on the configured measurement event, and the network device can determine whether to perform switching between relay links based on the reported measurement result.

[0004] In a first aspect, a wireless communication method is provided, the method comprising:

[0005] The remote terminal receives the first information;

[0006] The first information is used to configure at least one measurement event, and the at least one measurement event is a measurement event for switching between a first relay link and a second relay link, and both the first relay link and the second relay link are links for a remote terminal to access a network through a relay terminal.

[0007] In a second aspect, a wireless communication method is provided, the method comprising:

[0008] The communication device sends first information;

[0009] The first information is used to configure at least one measurement event, and the at least one measurement event is a measurement event for switching between a first relay link and a second relay link, and both the first relay link and the second relay link are links for a remote terminal to access a network through a relay terminal.

[0010] In a third aspect, a remote terminal is provided for executing the method in the first aspect.

[0011] Specifically, the remote terminal includes a functional module for executing the method in the above-mentioned first aspect.

[0012] In a fourth aspect, a communication device is provided, for executing the method in the second aspect.

[0013] Specifically, the communication device includes a functional module for executing the method in the above-mentioned second aspect.

[0014] In a fifth aspect, a remote terminal is provided, comprising a processor and a memory; the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the remote terminal executes the method in the above-mentioned first aspect.

[0015] In a sixth aspect, a communication device is provided, comprising a processor and a memory; the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the communication device executes the method in the above-mentioned second aspect.

[0016] In a seventh aspect, a device is provided for implementing the method in any one of the first to second aspects above.

[0017] Specifically, the apparatus includes: a processor, configured to call and run a computer program from a memory, so that a device equipped with the apparatus executes the method in any one of the first to second aspects described above.

[0018] In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, wherein the computer program enables a computer to execute the method in any one of the first to second aspects above.

[0019] In a ninth aspect, a computer program product is provided, comprising computer program instructions, wherein the computer program instructions enable a computer to execute the method in any one of the first to second aspects above.

[0020] In a tenth aspect, a computer program is provided, which, when executed on a computer, enables the computer to execute the method in any one of the first to second aspects above.

[0021] Through the above technical solution, a communication device (such as a network device or a service relay terminal) configures at least one measurement event for switching between a first relay link and a second relay link for a remote terminal, so that the remote terminal can report the measurement result based on the configured measurement event, and then the network device can determine whether to perform switching between relay links based on the reported measurement result. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of a communication system architecture applied in an embodiment of the present application.

[0023] Figure 2It is a schematic diagram of another communication system architecture applied in an embodiment of the present application.

[0024] Figure 3 It is a schematic flowchart of a wireless communication method provided according to an embodiment of the present application.

[0025] Figure 4 It is a schematic block diagram of a remote terminal provided according to an embodiment of the present application.

[0026] Figure 5 It is a schematic block diagram of a communication device provided according to an embodiment of the present application.

[0027] Figure 6 It is a schematic block diagram of another communication device provided according to an embodiment of the present application.

[0028] Figure 7 It is a schematic block diagram of a device provided according to an embodiment of the present application.

[0029] Figure 8 It is a schematic block diagram of a communication system provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0030] The following will describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. For the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-based access to unlicensed spectrum, LTE-U) system, NR on unlicensed spectrum (NR-based access to unlicensed spectrum, NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Internet of Things (IoT), etc. things, IoT), Wireless Fidelity (WiFi), fifth-generation communication (5th-Generation, 5G) system, sixth-generation communication (6th-Generation, 6G) system or other communication systems, etc.

[0032] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device to device (Device to Device, D2D) communication, machine to machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), vehicle to vehicle (V2V) communication, sidelink (SL) communication, vehicle to everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0033] In some embodiments, the communication system in the embodiments of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, a standalone (SA) networking scenario, or a non-standalone (NSA) networking scenario.

[0034] In some embodiments, the communication system in the embodiments of the present application can be applied to unlicensed spectrum, where the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiments of the present application can also be applied to licensed spectrum, where the licensed spectrum can also be considered as an unshared spectrum.

[0035] In some embodiments, the communication system in the embodiments of the present application can be applied to the FR1 frequency band (corresponding to the frequency band range of 410 MHz to 7.125 GHz), or to the FR2 frequency band (corresponding to the frequency band range of 24.25 GHz to 52.6 GHz), or to new frequency bands such as high-frequency frequency bands corresponding to the frequency band range of 52.6 GHz to 71 GHz or the frequency band range of 71 GHz to 114.25 GHz.

[0036] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

[0037] The terminal device can be a station (STATION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0038] In the embodiments of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (for example, on airplanes, balloons and satellites, etc.).

[0039] In the embodiment of the present application, the terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city or a wireless terminal device in a smart home, an in-vehicle communication device, a wireless communication chip / application specific integrated circuit (ASIC) / system on chip (SoC), etc.

[0040] As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and fully or partially independent of smartphones, such as smart watches or smart glasses, as well as devices that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

[0041] In an embodiment of the present application, the network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, or a base station (NodeB, NB) in WCDMA, or an evolved base station (EvolutionalNode B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device or a base station (gNB) or a transmission reception point (TRP) in an NR network, or a network device in a future evolved PLMN network or a network device in an NTN network, etc.

[0042] As an example and not limitation, in an embodiment of the present application, the network device may have a mobile characteristic, for example, the network device may be a mobile device. In some embodiments, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. In some embodiments, the network device may also be a base station set up in a location such as land or water.

[0043] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station), and the cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0044] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0045] The terms used in the implementation mode of this application are only used to explain the specific embodiments of this application, and are not intended to limit this application. The terms "first", "second", "third" and "fourth" in the specification and claims of this application and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0046] It should be understood that the "indication" mentioned in the embodiments of the present application can be a direct indication, an indirect indication, or an indication of 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 mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association relationship between A and B.

[0047] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between two items, or an association relationship between the two items, or a relationship between indication and being indicated, configuration and being configured, and the like.

[0048] In the embodiments of the present application, "pre-definition" or "pre-configuration" can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in a device (for example, including a terminal device and a network device), and the present application does not limit the specific implementation method. For example, pre-definition can refer to what is defined in the protocol.

[0049] In an embodiment of the present application, the “protocol” may refer to a standard protocol in the communication field, for example, it may be an evolution of an existing LTE protocol, NR protocol, Wi-Fi protocol, or a protocol related to other communication systems. The present application does not limit the protocol type.

[0050] 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 embodiments. The following related technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all belong to the protection scope of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0051] Figure 1 1 is a schematic diagram of a communication system applicable to an embodiment of the present application. The transmission resources of the vehicle-mounted terminals (vehicle-mounted terminal 121 and vehicle-mounted terminal 122) are allocated by the base station 110, and the vehicle-mounted terminals send data on the sidelink according to the resources allocated by the base station 110. Specifically, the base station 110 can allocate resources for a single transmission to the terminal, or can allocate resources for a semi-static transmission to the terminal.

[0052] Figure 2 Schematic diagram of another communication system applicable to the embodiment of the present application. The vehicle-mounted terminal (vehicle-mounted terminal 131 and vehicle-mounted terminal 132) autonomously selects transmission resources on the resources of the side link for data transmission. Optionally, the vehicle-mounted terminal can randomly select transmission resources, or select transmission resources by listening.

[0053] It should be noted that the Internet of Vehicles system adopts a terminal-to-terminal direct communication method, so it has higher spectrum efficiency and lower transmission delay. 3GPP defines two transmission modes, which are respectively recorded as: the first mode (sidelink resource allocation mode 1) and the second mode (sidelink resource allocation mode 2).

[0054] The first mode: The transmission resources of the terminal are allocated by the base station, and the terminal 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, or allocate resources for semi-static transmission to the terminal. Figure 1 As shown, the terminal is within the coverage of the network, and the network allocates transmission resources for sideline transmission to the terminal.

[0055] The second mode: The terminal selects a resource in the resource pool to transmit data. Figure 2 As shown, the terminal is located outside the coverage of the cell, and the terminal autonomously selects transmission resources from a pre-configured resource pool for side transmission; or, the terminal autonomously selects transmission resources from a network-configured resource pool for side transmission.

[0056] To facilitate understanding of the technical solutions of the embodiments of the present application, the terms related to the present application are explained below.

[0057] Proximity-based Services (ProSe): device-to-device communication, mainly for public safety services.

[0058] In ProSe, by configuring the position of the resource pool in the time domain, for example, the resource pool is non-continuous in the time domain, the terminal device can transmit / receive data non-continuously on the side link, thereby achieving power saving.

[0059] Vehicle-to-everything (V2X): The vehicle-to-everything (V2X) system is mainly aimed at relatively high-speed vehicle-to-vehicle and vehicle-to-pedestrian communication services. In V2X, since the on-board system has a continuous power supply, power efficiency is not the main issue, but the delay of data transmission is the main issue. Therefore, the system design requires the terminal equipment to send and receive continuously.

[0060] Wearable devices (FeD2D): corresponds to the scenario where wearable devices access the network through mobile phones, and is mainly aimed at scenarios with low mobile speed and low power access.

[0061] In FeD2D, a base station can configure the discontinuous reception (DRX) parameters of a remote terminal through a relay terminal.

[0062] Multi-carrier: In Long Term Evolution-Vehicle to Everything (LTE V2X), a multi-carrier mechanism is introduced. Specifically, the multi-carrier mechanism can support packet segmentation, using multiple carriers to transmit packets to improve data transmission rate; packet replication, copying an identical packet twice and sending it using two carriers to improve transmission reliability; and multi-carrier reception enhancement at the receiving end. Specifically, for packet replication: V2X sidelink communication supports sidelink packet replication and is executed at the Packet Data Convergence Protocol (PDCP) layer of the terminal device. For sidelink packet replication for transmission, the PDCP protocol data unit (PDU) is replicated at the PDCP entity. The replicated PDCP PDU of the same PDCP entity is submitted to two different Radio Link Control (RLC) entities and associated with two different sidelink logical channels respectively. The replicated PDCP PDU of the same PDCP entity is only allowed to be transmitted on different sidelink carriers. The terminal device can activate or deactivate sidelink packet replication based on (pre) configuration. Sidelink packet replication is not applicable for transmissions with transport profiles. ProSe Per-Packet Reliability (PPPR) values ​​that support sidelink packet replication can be (pre-)configured via PPPR thresholds. For autonomous resource selection and scheduled resource allocation by terminal devices, the terminal device shall perform sidelink packet replication for data with configured PPPR values ​​until the packet replication configuration is canceled for these PPPR values. For scheduled resource allocation, the terminal device reports the amount of data associated with one or more PPPR values ​​and the destination to which the data belongs via a sideline buffer status report (Buffer Status Report, BSR). The mapping of PPPR values ​​to logical channel groups can be configured by the eNB, and the PPPR value is reflected by the associated logical channel group identity (Identity, ID) included in the sideline BSR. A list of one or more PPPR values ​​can be reported by a terminal device connected to a Radio Resource Control (RRC) in the sideline terminal information.

[0063] New Radio-Vehicle to Everything (NR-V2X), based on LTEV2X, is not limited to broadcast scenarios, but further expanded to unicast and multicast scenarios.

[0064] Similar to LTE V2X, NR V2X will also define two resource authorization modes, Mode 1 (i.e., the first mode) and Mode 2 (i.e., the second mode); further, the user may be in a mixed mode, that is, the user can use Mode 1 to acquire resources and Mode 2 to acquire resources at the same time. The resource acquisition is indicated by sidelink authorization, that is, the sidelink authorization indicates the time-frequency position of the corresponding physical sidelink control channel (PSCCH) and physical sidelink shared channel (PSSCH) resources.

[0065] Unlike LTE V2X, in addition to the non-feedback, terminal device-initiated hybrid automatic repeat request (HARQ) retransmission, NR V2X introduces feedback-based HARQ retransmission, which is not limited to unicast communication but also includes multicast communication. Similar to LTE V2X, in NR V2X, since the on-board system has continuous power supply, power efficiency is not the main issue, but data transmission delay is the main issue, so the system design requires terminal devices to perform continuous transmission and reception.

[0066] Similar to LTE V2X, in NR V2X, since the on-board system has continuous power supply, power efficiency is not the main issue, but the latency of data transmission is the main issue, so the system design requires the terminal equipment to perform continuous transmission and reception.

[0067] In sidelink communication, the terminal triggers the sidelink radio resource control (RRC) reconfiguration process in the following scenarios:

[0068] releasing sidelink data bearers in unicast communications;

[0069] Establishing a sidelink data bearer in unicast communication;

[0070] Modifying the configuration of the sidelink data bearer in unicast communication;

[0071] In the terminal-to-network relay scenario, the PC5 relay RLC channel between the layer 2 relay terminal and the remote terminal is released;

[0072] In the terminal-to-network relay scenario, a PC5 relay RLC channel is established between the layer 2 relay terminal and the remote terminal;

[0073] In the terminal-to-network relay scenario, modify the configuration parameters related to the PC5 relay RLC channel between the layer 2 relay terminal and the remote terminal;

[0074] Reconfiguration of NR sidelink measurement reporting related parameters;

[0075] Reconfiguration of sidelink channel state information (CSI) reference signal resources and CSI reporting delay boundaries;

[0076] Reconfigure the line link discontinuous reception (DRX) on the opposite terminal side.

[0077] In order to facilitate a better understanding of the embodiments of the present application, the terminal-to-network relay related to the present application is explained.

[0078] In the NR system, for the terminal-to-network relay, the scenario is limited to the remote terminal under the same base station switching between the sideline relay link (i.e., the link through which the remote terminal accesses the network through the relay terminal) and the Uu link (i.e., the link through which the remote terminal directly accesses the network). In the NR evolution, the mechanism of enhancing the continuity of the single-hop layer 2 (Layer-2, L2) terminal-to-network (UE to Network, U2N) relay service is specified for the following scenarios, and the following four new scenarios are newly added:

[0079] Inter-gNB indirect-to-direct path switching (e.g., remote terminal <-> relay terminal A <-> gNB X) to remote terminal <-> gNB Y);

[0080] Inter-gNB direct-to-direct path switching (e.g., remote terminal <-> gNB X) to remote terminal <-> relay terminal A <-> gNB Y);

[0081] Intra-gNB indirect-to-indirect pathswitching (e.g. remote terminal <-> relay terminal A <-> gNB X) to remote terminal <-> relay terminal B <-> gNB X);

[0082] Inter-gNB indirect-to-indirect path switching (for example, “remote terminal <-> relay terminal A <-> gNB X” switches to “remote terminal <-> relay terminal B <-> gNB Y”).

[0083] In addition, measurement reporting events such as event X1, event X2, event Y1 and event Y2 are introduced to enable the remote terminal to switch between the side relay link (i.e., the link through which the remote terminal accesses the network via the relay terminal) and the Uu link (i.e., the link through which the remote terminal directly accesses the network).

[0084] Event X1

[0085] In event X1, the measurement result of the serving relay terminal in L2 U2N becomes worse than the first threshold, and the measurement result of the NR cell becomes better than the second threshold.

[0086] Entry conditions for event X1: satisfy the following conditions X1-1 and X1-2;

[0087] Exit conditions of event X1: satisfying the following conditions X1-3 and / or conditions X1-4.

[0088] Inequality X1-1 (entry condition X1-1): Mr+Hys<first threshold.

[0089] Inequality X1-2 (entry condition X1-2): Mn+Ofn+Ocn-Hys>second threshold.

[0090] Inequality X1-3 (leaving condition X1-3): Mr-Hys>first threshold.

[0091] Inequality X1-4 (leaving condition X1-4): Mn+Ofn+Ocn+Hys<second threshold value.

[0092] The meanings of the parameters in the above inequality are as follows:

[0093] Mr represents the measurement result of the serving relay terminal in L2 U2N without considering any offset;

[0094] Mn represents the measurement result of the NR cell without considering any offset;

[0095] Ofn represents the specific offset of the NR cell frequency measurement object;

[0096] Ocn represents the cell-specific offset of the NR cell. If Ocn is not configured for the NR cell, Ocn is set to zero;

[0097] Hys represents the hysteresis parameter of event X1;

[0098] The first threshold represents a threshold of event X1 (for example, x1-first threshold-relay, a threshold configured for event X1 in the NR measurement report configuration (reportConfigNR));

[0099] The second threshold represents a threshold of event X1 (eg, x1-second threshold, a threshold configured for event X1 in the NR measurement report configuration (reportConfigNR)).

[0100] The unit of Mr is decibel milliwatt (dBm).

[0101] When the measurement result is reference signal received power (RSRP), the unit of Mn is dBm.

[0102] When the measurement result is a reference signal received quality (RSRQ) or a reference signal to interference plus noise ratio (RS-SINR), the unit of Mn is decibel (dB).

[0103] The units of Ofn, Ocn, and Hys are all dB.

[0104] The unit of the first threshold is the same as the unit of Mr.

[0105] The unit of the second threshold is the same as the unit of Mn.

[0106] Event X2

[0107] In event X2, the measurement result of the serving relay terminal in L2 U2N becomes worse than a threshold.

[0108] Entry conditions for event X2: satisfy the following conditions X2-1;

[0109] Exit condition of event X2: satisfy the following condition X2-2.

[0110] Inequality X2-1 (entry condition): Mr+Hys<threshold value.

[0111] Inequality X2-2 (leave condition): Mr-Hys>threshold.

[0112] The meanings of the parameters in the above inequality are as follows:

[0113] Mr represents the measurement result of the serving relay terminal in L2 U2N without considering any offset;

[0114] Hys represents the hysteresis parameter of event X2;

[0115] The threshold represents the threshold of event X2 (eg, x2-threshold-relay, the threshold configured for event X1 in the NR measurement report configuration (reportConfigNR)).

[0116] The unit of Mr is dBm.

[0117] The unit of Hys is dB.

[0118] The unit of the threshold is the same as that of Mr.

[0119] Event Y1

[0120] In event Y1, the measurement result of the primary cell (PCell) becomes worse than a first threshold, and the measurement result of the candidate relay terminal in L2 U2N becomes better than a second threshold.

[0121] Entry conditions for event Y1: satisfying the following conditions Y1-1 and Y1-2;

[0122] Exit conditions of event Y1: satisfying the following conditions Y1-3 and / or conditions Y1-4.

[0123] Inequality Y1-1 (entry condition Y1-1): Mp+Hys<first threshold.

[0124] Inequality Y1-2 (entry condition Y1-2): Mr-Hys>second threshold.

[0125] Inequality Y1-3 (leaving condition Y1-3): Mp-Hys>first threshold.

[0126] Inequality Y1-4 (leaving condition Y1-4): Mr+Hys<second threshold value.

[0127] The meanings of the parameters in the above inequality are as follows:

[0128] Mr represents the measurement result of the candidate relay terminal in L2 U2N without considering any offset;

[0129] Mp represents the measurement result of PCell without considering any offset;

[0130] Hys represents a hysteresis parameter of event Y1 (for example, a hysteresis parameter configured for event Y1 in a measurement report configuration (reportConfigInterRAT) outside a radio access technology (Radio Access Technology, RAT));

[0131] The first threshold represents a threshold of event Y1 (for example, y1-first threshold, a threshold configured for event Y1 in the measurement report configuration outside the RAT (reportConfigInterRAT));

[0132] The second threshold value represents a threshold value of event Y1 (eg, y1-second threshold value-relay, a threshold value configured for event Y1 in the inter-RAT measurement report configuration (reportConfigInterRAT)).

[0133] When the measurement result is RSRP, the unit of Mp is dBm.

[0134] When the measurement result is RSRQ or Signal to Interference plus Noise Ratio (SINR), the unit of Mp is decibel (dB).

[0135] The unit of Mr is decibel milliwatt (dBm) or decibel (dB) and is determined based on the measured quality of the candidate relay terminals in L2 U2N.

[0136] The unit of Hys is dB.

[0137] The unit of the first threshold is the same as that of Mp.

[0138] The unit of the second threshold is the same as the unit of Mr.

[0139] Event Y2

[0140] The measurement result of the candidate relay terminal in L2 U2N becomes better than the threshold.

[0141] Entry conditions for event Y2: satisfy the following condition Y2-1;

[0142] Exit condition of event Y2: satisfy the following condition Y2-2.

[0143] Inequality Y2-1 (entry condition Y2-1): Mr-Hys>second threshold.

[0144] Inequality Y2-2 (leaving condition Y2-2): Mr+Hys<second threshold value.

[0145] Mr represents the measurement result of the candidate relay terminal in L2 U2N without considering any offset;

[0146] Hys represents a hysteresis parameter of event Y2 (for example, a hysteresis parameter configured for event Y2 in the measurement report configuration outside the RAT (reportConfigInterRAT);

[0147] Threshold represents a threshold of event Y2 (eg, y2-threshold-relay, a threshold configured for event Y2 in the measurement report configuration outside the RAT (reportConfigInterRAT));

[0148] The unit of Mr is decibel milliwatt (dBm) or decibel (dB) and is determined based on the measured quality of the candidate relay terminals in L2 U2N.

[0149] The unit of Hys is dB.

[0150] The unit of the threshold is the same as that of Mr.

[0151] Based on the switching of the remote terminal between the side relay link (i.e., the link through which the remote terminal accesses the network through the relay terminal) and the side relay link (i.e., the link through which the remote terminal accesses the network through the relay terminal) introduced in the NR evolution, the present application designs a new measurement event, so that the remote terminal can report the measurement result based on the configured measurement event, and then the network device can determine whether to perform switching between relay links based on the reported measurement result.

[0152] The technical solution of the present application is described in detail below through specific embodiments.

[0153] Figure 3 is a schematic flow chart of a wireless communication method 300 according to an embodiment of the present application, such as Figure 3 As shown, the wireless communication method 300 may include at least part of the following contents:

[0154] S310, the communication device sends first information; wherein the first information is used to configure at least one measurement event, the at least one measurement event is a measurement event for switching between a first relay link and a second relay link, and the first relay link and the second relay link are both links for a remote terminal to access a network through a relay terminal;

[0155] S320: The remote terminal receives the first information.

[0156] In an embodiment of the present application, the remote terminal may report a measurement result based on at least one measurement event, and the network device may determine whether to perform switching between relay links based on the reported measurement result.

[0157] For example, when some or all of the measurement events in at least one measurement event trigger the reporting of measurement results, the remote terminal can report the measurement results to the network device, and the network device determines whether to perform switching between the first relay link (such as the source relay link) and the second relay link (such as the target relay link) based on the measurement results.

[0158] In some embodiments, the first information may include an entry condition and / or an exit condition of the at least one measurement event. That is, the communication device configures at least one measurement event by carrying the entry condition and / or the exit condition of the at least one measurement event in the first information. In other words, the remote terminal can determine at least one measurement event configured by the network device by obtaining the entry condition and / or the exit condition of the at least one measurement event.

[0159] It should be noted that, for a certain measurement event, the remote terminal reports the measurement result when the admission condition is met, and does not perform measurement result reporting or does not report the measurement result when the leaving condition is met.

[0160] In some embodiments, the measurement result corresponding to the at least one measurement event may include but is not limited to at least one of the following: reference signal received power (Reference Signal Received Power, RSRP), reference signal received quality (Reference Signal Received Quality, RSRQ), signal to interference plus noise ratio (Signal to Interference plus Noise Ratio, SINR).

[0161] In some embodiments, the switching between the first relay link and the second relay link is an indirect-to-indirect path switching, that is, the remote terminal switches between indirect paths. In the indirect path, the remote terminal accesses the network through the relay terminal. For example, intra-gNB indirect-to-indirect path switching (for example, "remote terminal <-> relay terminal A <-> gNB X" switches to "remote terminal <-> relay terminal B <-> gNB X"). For another example, inter-gNB indirect-to-indirect path switching (for example, "remote terminal <-> relay terminal A <-> gNB X" switches to "remote terminal <-> relay terminal B <-> gNB Y").

[0162] In some embodiments, the communication device may be a network device or a service relay terminal. That is, the at least one measurement event may be configured by the network device, or the at least one measurement event may be configured by the service relay terminal. For example, in the case where the at least one measurement event is configured by the network device, the first information may be forwarded to the remote terminal by the service relay terminal.

[0163] In some embodiments, when the communication device is a network device, the first information can be carried by at least one of the following: Radio Resource Control (RRC) signaling, downlink control information (DCI), and a system broadcast message.

[0164] For example, when the first information is carried through RRC signaling, the first information may be one or more information fields in the RRC signaling (either a newly designed information field or a reused existing information field), or the first information may be one or more fields in an information field in the RRC signaling (either a newly designed field or a reused existing field).

[0165] For example, when the first information is carried by DCI, the first information may be one or more information fields in the DCI (either a newly designed information field or a reused existing information field), or the first information may be one or more fields in an information field in the DCI (either a newly designed field or a reused existing field).

[0166] For example, when the first information is carried by a system broadcast message, the first information may be one or more information fields in the system broadcast message (either a newly designed information field or a reused existing information field), or the first information may be one or more fields in an information field in the system broadcast message (either a newly designed field or a reused existing field).

[0167] In some embodiments, when the communication device is a service relay terminal, the first information can be carried by at least one of the following: discovery message, sidelink control information (Sidelink Control Information, SCI), sidelink media access control layer control element (Sidelink Media Access Control Control Element, SL MACCE), PC5-RRC message.

[0168] For example, when the first information is carried by a discovery message, the first information may be one or more information fields in the discovery message (either a newly designed information field or a reused existing information field), or the first information may be one or more fields in an information field in the discovery message (either a newly designed field or a reused existing field).

[0169] For example, when the first information is carried by SCI, the first information may be one or more information fields in SCI (either a newly designed information field or a reused existing information field), or the first information may be one or more fields in an information field in SCI (either a newly designed field or a reused existing field).

[0170] For example, when the first information is carried by the SL MAC CE, the first information may be one or more information fields in the SL MAC CE (either a newly designed information field or a reused existing information field), or the first information may be one or more fields in an information field in the SL MAC CE (either a newly designed field or a reused existing field).

[0171] For example, when the first information is carried by a PC5-RRC message, the first information may be one or more information fields in the PC5-RRC message (either a newly designed information field or a reused existing information field), or the first information may be one or more fields in an information field in the PC5-RRC message (either a newly designed field or a reused existing field).

[0172] In some embodiments, the at least one measurement event comprises a first measurement event;

[0173] Among them, in the first measurement event, the link measurement value between the remote terminal and the serving relay terminal (Serving L2 U2N RelayUE) is greater than or equal to the first threshold value, and / or the link measurement value between the serving relay terminal (Serving L2 U2N Relay UE) and the network device is greater than or equal to the second threshold value.

[0174] Specifically, in the first measurement event, the link measurement value between the remote terminal and the service relay terminal is greater than or equal to the first threshold value, and / or the link measurement value between the service relay terminal and the network device is greater than or equal to the second threshold value. In other words, when the access condition of the first measurement event is met, the link measurement value between the remote terminal and the service relay terminal is greater than or equal to the first threshold value, and / or the link measurement value between the service relay terminal and the network device is greater than or equal to the second threshold value.

[0175] In some embodiments, the admission condition of the first measurement event is that the link measurement value between the remote terminal and the service relay terminal is greater than or equal to the first threshold value, or the admission condition of the first measurement event is that the value obtained by subtracting the hysteresis value from the link measurement value between the remote terminal and the service relay terminal is greater than or equal to the first threshold value; and / or,

[0176] The exit condition of the first measurement event is that the link measurement value between the remote terminal and the service relay terminal is less than the first threshold value, or the exit condition of the first measurement event is that the value obtained by adding the hysteresis value to the link measurement value between the remote terminal and the service relay terminal is less than the first threshold value.

[0177] In some embodiments, when an access condition of a first measurement event is met, the remote terminal reports a first measurement result, wherein the first measurement result is used to determine whether to perform a switch between the first relay link and the second relay link. Further, the network device may determine whether to perform a switch between a first relay link (such as a source relay link) and a second relay link (such as a target relay link) based on the reported first measurement result. For example, when the first measurement result reported by the remote terminal meets the switching condition, the network device determines to switch the relay link to which the remote terminal belongs from the first relay link (such as the source relay link) to the second relay link (such as the target relay link); when the first measurement result reported by the remote terminal does not meet the switching condition, the network device determines not to perform a switch of the relay link to which the remote device belongs.

[0178] Optionally, the remote terminal obtains the first measurement result through measurement. For example, the first measurement result may include but is not limited to at least one of the following: RSRP, RSRQ, SINR.

[0179] In some embodiments, when the exit condition of the first measurement event is met, the remote terminal does not perform measurement result reporting or does not report the measurement result.

[0180] In some embodiments, the admission condition of the first measurement event is that the link measurement value between the service relay terminal and the network device is greater than or equal to the second threshold value, or the admission condition of the first measurement event is that the value obtained by subtracting the hysteresis value from the link measurement value between the service relay terminal and the network device is greater than or equal to the second threshold value; and / or,

[0181] The exit condition of the first measurement event is that the link measurement value between the service relay terminal and the network device is less than the second threshold value, or the exit condition of the first measurement event is that the value obtained by adding the hysteresis value to the link measurement value between the service relay terminal and the network device is less than the second threshold value.

[0182] In some embodiments, the first threshold value and / or the second threshold value are configured by the network device through RRC signaling, or the first threshold value and / or the second threshold value are configured by the network device through a system broadcast message. Specifically, if the remote terminal is within the network coverage and the remote terminal is in the RRC idle state or the RRC deactivated state, the network device sends the first threshold value and / or the second threshold value to the remote terminal through a system broadcast message. If the remote terminal is within the network coverage and the remote terminal is in the RRC connected state, the network device sends the first threshold value and / or the second threshold value to the remote terminal through RRC dedicated signaling.

[0183] In some embodiments, the first threshold value and / or the second threshold value are configured by the serving relay terminal (Serving L2U2N Relay UE) through a discovery message, or, the first threshold value and / or the second threshold value are configured by the serving relay terminal through a PC5-RRC message, or, the first threshold value and / or the second threshold value are configured by the serving relay terminal through a forwarded system broadcast message.

[0184] In some embodiments, the first measurement event is a measurement performed by the remote terminal according to a configured NR measurement object (measObjectNR), wherein the measurement object may be a current serving relay terminal.

[0185] In some embodiments, the at least one measurement event comprises a second measurement event;

[0186] In the second measurement event, a link measurement value between the remote terminal and a serving relay terminal (Serving L2 U2N RelayUE) is less than a third threshold value, and / or a link measurement value between the serving relay terminal and a network device is less than a fourth threshold value.

[0187] Specifically, in the second measurement event, the link measurement value between the remote terminal and the service relay terminal is less than the third threshold value, and / or the link measurement value between the service relay terminal and the network device is less than the fourth threshold value. In other words, when the access condition of the second measurement event is met, the link measurement value between the remote terminal and the service relay terminal is less than the third threshold value, and / or the link measurement value between the service relay terminal and the network device is less than the fourth threshold value.

[0188] In some embodiments, the entry condition of the second measurement event is that the link measurement value between the remote terminal and the service relay terminal is less than the third threshold value, or the entry condition of the second measurement event is that the value obtained by adding the hysteresis value to the link measurement value between the remote terminal and the service relay terminal is less than the third threshold value; and / or,

[0189] The exit condition of the second measurement event is that the link measurement value between the remote terminal and the service relay terminal is greater than or equal to the third threshold value, or the exit condition of the second measurement event is that the value obtained by subtracting the hysteresis value from the link measurement value between the remote terminal and the service relay terminal is greater than or equal to the third threshold value.

[0190] In some embodiments, the admission condition of the second measurement event is that the link measurement value between the service relay terminal and the network device is less than the fourth threshold value, or the admission condition of the second measurement event is that the value obtained by adding the hysteresis value to the link measurement value between the service relay terminal and the network device is less than the fourth threshold value; and / or,

[0191] The exit condition of the second measurement event is that the link measurement value between the service relay terminal and the network device is greater than or equal to the fourth threshold value, or the exit condition of the second measurement event is that the value obtained by subtracting the hysteresis value from the link measurement value between the service relay terminal and the network device is greater than or equal to the fourth threshold value.

[0192] In some embodiments, the third threshold value and / or the fourth threshold value are configured by the network device through RRC signaling, or the third threshold value and / or the fourth threshold value are configured by the network device through a system broadcast message. Specifically, if the remote terminal is within the network coverage and the remote terminal is in the RRC idle state or the RRC deactivated state, the network device sends the third threshold value and / or the fourth threshold value to the remote terminal through a system broadcast message. If the remote terminal is within the network coverage and the remote terminal is in the RRC connected state, the network device sends the third threshold value and / or the fourth threshold value to the remote terminal through RRC dedicated signaling.

[0193] In some embodiments, the third threshold value and / or the fourth threshold value are configured by the serving relay terminal (Serving L2U2N Relay UE) through a discovery message, or the third threshold value and / or the fourth threshold value are configured by the serving relay terminal through a PC5-RRC message, or the third threshold value and / or the fourth threshold value are configured by the serving relay terminal through a forwarded system broadcast message.

[0194] In some embodiments, the second measurement event is a measurement performed by the remote terminal according to a configured NR measurement object (measObjectNR), wherein the measurement object may be a current serving relay terminal.

[0195] In some embodiments, when the access condition of the second measurement event is met, the remote terminal reports a second measurement result, wherein the second measurement result is used to determine whether to perform a switch between the first relay link and the second relay link. Thus, the network device determines whether to perform a switch between the first relay link (such as a source relay link) and the second relay link (such as a target relay link) based on the second measurement result reported by the remote terminal. For example, when the second measurement result reported by the remote terminal meets the switching condition, the network device determines to switch the relay link to which the remote device belongs from the first relay link (such as the source relay link) to the second relay link (such as the target relay link); when the second measurement result reported by the remote terminal does not meet the switching condition, the network device determines not to perform a switch of the relay link to which the remote device belongs.

[0196] Optionally, the remote terminal obtains the second measurement result through measurement. For example, the second measurement result may include but is not limited to at least one of the following: RSRP, RSRQ, SINR.

[0197] In some embodiments, when the exit condition of the second measurement event is met, the remote terminal does not perform measurement result reporting or does not report the measurement result.

[0198] In some embodiments, the at least one measurement event comprises a third measurement event;

[0199] In which, in the third measurement event, the link measurement value between the remote terminal and the candidate relay terminal (Candidate L2 U2N Relay UE) is greater than or equal to the fifth threshold value, and / or the link measurement value between the candidate relay terminal (Candidate L2U2N Relay UE) and the network device is greater than or equal to the sixth threshold value.

[0200] Specifically, in the third measurement event, the link measurement value between the remote terminal and the candidate relay terminal is greater than or equal to the fifth threshold value, and / or the link measurement value between the candidate relay terminal and the network device is greater than or equal to the sixth threshold value. In other words, when the admission condition of the third measurement event is met, the link measurement value between the remote terminal and the candidate relay terminal is greater than or equal to the fifth threshold value, and / or the link measurement value between the candidate relay terminal and the network device is greater than or equal to the sixth threshold value.

[0201] In some embodiments, the entry condition of the third measurement event is that the value obtained by adding a preset offset value to the link measurement value between the remote terminal and the candidate relay terminal is greater than or equal to the fifth threshold value, or the entry condition of the third measurement event is that the value obtained by adding a preset offset value to the link measurement value between the remote terminal and the candidate relay terminal and subtracting a hysteresis value is greater than or equal to the fifth threshold value; and / or,

[0202] The exit condition of the third measurement event is that the value obtained by adding the preset offset value to the link measurement value between the remote terminal and the candidate relay terminal is less than the fifth threshold value, or the exit condition of the third measurement event is that the value obtained by adding the preset offset value and the hysteresis value to the link measurement value between the remote terminal and the candidate relay terminal is less than the fifth threshold value.

[0203] In some embodiments, the entry condition of the third measurement event is that the link measurement value between the candidate relay terminal and the network device is greater than or equal to the sixth threshold value, or the entry condition of the third measurement event is that the value obtained by subtracting the hysteresis value from the link measurement value between the candidate relay terminal and the network device is greater than or equal to the sixth threshold value; and / or,

[0204] The exit condition of the third measurement event is that the link measurement value between the candidate relay terminal and the network device is less than the sixth threshold value, or the exit condition of the third measurement event is that the value obtained by adding the link measurement value between the candidate relay terminal and the network device to the hysteresis value is less than the sixth threshold value.

[0205] In some embodiments, the fifth threshold value and / or the sixth threshold value are configured by the network device through RRC signaling, or the fifth threshold value and / or the sixth threshold value are configured by the network device through a system broadcast message. Specifically, if the remote terminal is within the network coverage and the remote terminal is in the RRC idle state or the RRC deactivated state, the network device sends the fifth threshold value and / or the sixth threshold value to the remote terminal through a system broadcast message. If the remote terminal is within the network coverage and the remote terminal is in the RRC connected state, the network device sends the fifth threshold value and / or the sixth threshold value to the remote terminal through RRC dedicated signaling.

[0206] In some embodiments, the fifth threshold value and / or the sixth threshold value are configured by the serving relay terminal (Serving L2U2N Relay UE) through a discovery message, or the fifth threshold value and / or the sixth threshold value are configured by the serving relay terminal through a PC5-RRC message, or the fifth threshold value and / or the sixth threshold value are configured by the serving relay terminal through a forwarded system broadcast message.

[0207] In some embodiments, the third measurement event is a measurement performed by the remote terminal according to a configured NR measurement object (measObjectNR), wherein the measurement object may be a current serving relay terminal and a candidate relay terminal.

[0208] In some embodiments, when the access condition of the third measurement event is met, the remote terminal reports a third measurement result, wherein the third measurement result is used to determine whether to perform a switch between the first relay link and the second relay link. Further, the network device determines whether to perform a switch between the first relay link (such as a source relay link) and the second relay link (such as a target relay link) based on the third measurement result reported by the remote terminal. For example, when the third measurement result reported by the remote terminal meets the switching condition, the network device determines to switch the relay link to which the remote device belongs from the first relay link (such as the source relay link) to the second relay link (such as the target relay link); when the third measurement result reported by the remote terminal does not meet the switching condition, the network device determines not to perform a switch of the relay link to which the remote device belongs.

[0209] Optionally, the remote terminal obtains the third measurement result through measurement. For example, the third measurement result may include but is not limited to at least one of the following: RSRP, RSRQ, SINR.

[0210] In some embodiments, when the exit condition of the third measurement event is met, the remote terminal does not perform measurement result reporting or does not report the measurement result.

[0211] In some embodiments, the at least one measurement event includes a fourth measurement event;

[0212] In which, in the fourth measurement event, the side link measurement value measured for the candidate relay terminal (Candidate L2 U2N Relay UE) is higher than the side link measurement value measured for the serving relay terminal (Serving L2 U2N Relay UE) by a preset offset value, and / or, the link measurement value between the candidate relay terminal (Candidate L2 U2N Relay UE) and the network device is higher than the link measurement value between the serving relay terminal (Serving L2 U2N Relay UE) and the network device by a preset offset value.

[0213] Specifically, in the fourth measurement event, the side link measurement value measured for the candidate relay terminal is higher than the side link measurement value measured for the serving relay terminal by a preset offset value, and / or the link measurement value between the candidate relay terminal and the network device is higher than the link measurement value between the serving relay terminal and the network device by a preset offset value. In other words, when the access conditions of the fourth measurement event are met, the side link measurement value measured for the candidate relay terminal is higher than the side link measurement value measured for the serving relay terminal by a preset offset value, and / or the link measurement value between the candidate relay terminal and the network device is higher than the link measurement value between the serving relay terminal and the network device by a preset offset value.

[0214] In some embodiments, the entry condition of the fourth measurement event is that the value obtained by adding a preset offset value to the side link measurement value measured for the candidate relay terminal is greater than or equal to the value obtained by adding the preset offset value and the offset value corresponding to the current measurement object to the side link measurement value measured for the serving relay terminal, or the entry condition of the fourth measurement event is that the value obtained by adding the preset offset value to the side link measurement value measured for the candidate relay terminal and subtracting the hysteresis value is greater than or equal to the value obtained by adding the preset offset value and the offset value corresponding to the current measurement object to the side link measurement value measured for the serving relay terminal; and / or,

[0215] The exit condition of the fourth measurement event is that the value obtained by adding the preset offset value to the side link measurement value measured for the candidate relay terminal is smaller than the value obtained by adding the preset offset value and the offset value corresponding to the current measurement object to the side link measurement value measured for the service relay terminal, or the exit condition of the fourth measurement event is that the value obtained by adding the preset offset value and the hysteresis value to the side link measurement value measured for the candidate relay terminal is smaller than the value obtained by adding the preset offset value and the offset value corresponding to the current measurement object to the side link measurement value measured for the service relay terminal.

[0216] In some embodiments, the entry condition of the fourth measurement event is that the value obtained by adding a preset offset value to the link measurement value between the candidate relay terminal and the network device is greater than or equal to the value obtained by adding a preset offset value to the link measurement value between the serving relay terminal and the network device and the offset value corresponding to the current measurement object, or the entry condition of the fourth measurement event is that the value obtained by adding a preset offset value to the link measurement value between the candidate relay terminal and the network device and subtracting a hysteresis value is greater than or equal to the value obtained by adding a preset offset value to the link measurement value between the candidate relay terminal and the network device and the offset value corresponding to the current measurement object; and / or,

[0217] The exit condition of the fourth measurement event is that the value obtained by adding the preset offset value to the link measurement value between the candidate relay terminal and the network device is smaller than the value obtained by adding the preset offset value and the offset value corresponding to the current measurement object to the link measurement value between the service relay terminal and the network device, or the exit condition of the fourth measurement event is that the value obtained by adding the preset offset value and the hysteresis value to the link measurement value between the candidate relay terminal and the network device is smaller than the value obtained by adding the preset offset value and the offset value corresponding to the current measurement object to the link measurement value between the service relay terminal and the network device.

[0218] In some embodiments, the fourth measurement event is a measurement performed by the remote terminal according to a configured NR measurement object (measObjectNR), wherein the measurement object may be a current serving relay terminal and a candidate relay terminal.

[0219] In some embodiments, when the access condition of the fourth measurement event is met, the remote terminal reports a fourth measurement result, wherein the fourth measurement result is used to determine whether to perform a switch between the first relay link and the second relay link. Further, the network device determines whether to perform a switch between the first relay link (such as a source relay link) and the second relay link (such as a target relay link) based on the fourth measurement result reported by the remote terminal. For example, when the fourth measurement result reported by the remote terminal meets the switching condition, the network device determines to switch the relay link to which the remote device belongs from the first relay link (such as the source relay link) to the second relay link (such as the target relay link); when the fourth measurement result reported by the remote terminal does not meet the switching condition, the network device determines not to perform a switch of the relay link to which the remote device belongs.

[0220] Optionally, the remote terminal obtains the fourth measurement result through measurement. For example, the fourth measurement result may include but is not limited to at least one of the following: RSRP, RSRQ, SINR.

[0221] In some embodiments, when the exit condition of the fourth measurement event is met, the remote terminal does not perform measurement result reporting or does not report the measurement result.

[0222] In some embodiments, the at least one measurement event includes a fifth measurement event;

[0223] In which, in the fifth measurement event, the link measurement value between the remote terminal and the serving relay terminal (Serving L2 U2N RelayUE) is less than the seventh threshold value and the link measurement value between the remote terminal and the candidate relay terminal (Candidate L2 U2NRelay UE) is greater than or equal to the eighth threshold value, and / or, the link measurement value between the serving relay terminal (Serving L2U2N Relay UE) and the network device is less than the ninth threshold value and the link measurement value between the candidate relay terminal (CandidateL2 U2N Relay UE) and the network device is greater than or equal to the tenth threshold value.

[0224] Specifically, in the fifth measurement event, the link measurement value between the remote terminal and the service relay terminal is less than the seventh threshold value and the link measurement value between the remote terminal and the candidate relay terminal is greater than or equal to the eighth threshold value, and / or, the link measurement value between the service relay terminal and the network device is less than the ninth threshold value and the link measurement value between the candidate relay terminal and the network device is greater than or equal to the tenth threshold value. In other words, when the access conditions of the fifth measurement event are met, the link measurement value between the remote terminal and the service relay terminal is less than the seventh threshold value and the link measurement value between the remote terminal and the candidate relay terminal is greater than or equal to the eighth threshold value, and / or, the link measurement value between the service relay terminal and the network device is less than the ninth threshold value and the link measurement value between the candidate relay terminal and the network device is greater than or equal to the tenth threshold value.

[0225] In some embodiments, the admission condition of the fifth measurement event is that the link measurement value between the remote terminal and the service relay terminal is less than the seventh threshold value, or, the admission condition of the fifth measurement event is that the value obtained by adding the hysteresis value to the link measurement value between the remote terminal and the service relay terminal is less than the seventh threshold value, or, the admission condition of the fifth measurement event is that the value obtained by adding the preset offset value to the link measurement value between the remote terminal and the candidate relay terminal is greater than or equal to the eighth threshold value, or, the admission condition of the fifth measurement event is that the value obtained by adding the preset offset value to the link measurement value between the remote terminal and the candidate relay terminal and subtracting the hysteresis value is greater than or equal to the eighth threshold value; and / or,

[0226] The exit condition of the fifth measurement event is that the link measurement value between the remote terminal and the service relay terminal is greater than or equal to the seventh threshold value, or, the exit condition of the fifth measurement event is that the value obtained by subtracting the hysteresis value from the link measurement value between the remote terminal and the service relay terminal is greater than or equal to the seventh threshold value, or, the exit condition of the fifth measurement event is that the value obtained by adding the preset offset value to the link measurement value between the remote terminal and the candidate relay terminal is less than the eighth threshold value, or, the exit condition of the fifth measurement event is that the value obtained by adding the preset offset value and the hysteresis value to the link measurement value between the remote terminal and the candidate relay terminal is less than the eighth threshold value.

[0227] In some embodiments, the entry condition of the fifth measurement event is that the value obtained by adding the hysteresis value to the link measurement value between the serving relay terminal and the network device is less than the ninth threshold value, or the entry condition of the fifth measurement event is that the value obtained by adding the preset offset value to the link measurement value between the candidate relay terminal and the network device and subtracting the hysteresis value is greater than or equal to the tenth threshold value; and / or,

[0228] The exit condition of the fifth measurement event is that the value obtained by subtracting the hysteresis value from the link measurement value between the service relay terminal and the network device is less than the ninth threshold value, or the exit condition of the fifth measurement event is that the value obtained by subtracting the preset offset value and adding the hysteresis value from the link measurement value between the candidate relay terminal and the network device is less than the tenth threshold value.

[0229] In some embodiments, at least one of the seventh threshold value, the eighth threshold value, the ninth threshold value, and the tenth threshold value is configured by the network device through RRC signaling, or at least one of the seventh threshold value, the eighth threshold value, the ninth threshold value, and the tenth threshold value is configured by the network device through a system broadcast message. Specifically, if the remote terminal is within the network coverage and the remote terminal is in the RRC idle state or the RRC deactivated state, the network device sends at least one of the seventh threshold value, the eighth threshold value, the ninth threshold value, and the tenth threshold value to the remote terminal through a system broadcast message. If the remote terminal is within the network coverage and the remote terminal is in the RRC connected state, the network device sends at least one of the seventh threshold value, the eighth threshold value, the ninth threshold value, and the tenth threshold value to the remote terminal through RRC dedicated signaling.

[0230] In some embodiments, at least one of the seventh threshold value, the eighth threshold value, the ninth threshold value and the tenth threshold value is configured by a serving relay terminal (Serving L2 U2N Relay UE) through a discovery message, or, at least one of the seventh threshold value, the eighth threshold value, the ninth threshold value and the tenth threshold value is configured by the serving relay terminal through a PC5-RRC message, or, at least one of the seventh threshold value, the eighth threshold value, the ninth threshold value and the tenth threshold value is configured by the serving relay terminal through a forwarded system broadcast message.

[0231] In some embodiments, the fifth measurement event is a measurement performed by the remote terminal according to a configured NR measurement object (measObjectNR), wherein the measurement object may be a current serving relay terminal and a candidate relay terminal.

[0232] In some embodiments, when the access condition of the fifth measurement event is met, the remote terminal reports the fifth measurement result, wherein the fifth measurement result is used to determine whether to perform a switch between the first relay link and the second relay link. Further, the network device determines whether to perform a switch between the first relay link (such as a source relay link) and the second relay link (such as a target relay link) based on the fifth measurement result reported by the remote terminal. For example, when the fifth measurement result reported by the remote terminal meets the switching condition, the network device determines to switch the relay link to which the remote device belongs from the first relay link (such as the source relay link) to the second relay link (such as the target relay link); when the fifth measurement result reported by the remote terminal does not meet the switching condition, the network device determines not to perform a switch of the relay link to which the remote device belongs.

[0233] Optionally, the remote terminal obtains the fifth measurement result through measurement. For example, the fifth measurement result may include but is not limited to at least one of the following: RSRP, RSRQ, SINR.

[0234] In some embodiments, when the exit condition of the fifth measurement event is met, the remote terminal does not perform measurement result reporting or does not report the measurement result.

[0235] In some embodiments, the preset offset value is configured according to at least one of the following granularities:

[0236] Cell granularity, remote terminal granularity, relay terminal granularity, and service priority granularity.

[0237] Specifically, in the third measurement event, the preset offset value is configured according to at least one of the following granularities: cell granularity, remote terminal granularity, relay terminal granularity, and service priority granularity.

[0238] Specifically, in the fourth measurement event, the preset offset value is configured according to at least one of the following granularities: cell granularity, remote terminal granularity, relay terminal granularity, and service priority granularity.

[0239] Specifically, in the fifth measurement event, the preset offset value is configured according to at least one of the following granularities: cell granularity, remote terminal granularity, relay terminal granularity, and service priority granularity.

[0240] In some embodiments, in different measurement events, the configuration granularity of the preset offset value may be the same or different.

[0241] In some embodiments, in different measurement events, the preset offset value may be the same or different.

[0242] For example, the preset offset value may be configured according to the cell granularity, that is, different cells may be configured with different preset offset values.

[0243] For another example, the preset offset value may be configured according to the remote terminal granularity, that is, different remote terminals may be configured with different preset offset values.

[0244] For another example, the preset offset value may be configured according to the relay terminal granularity, that is, different relay terminals may be configured with different preset offset values.

[0245] For another example, the preset offset value may be configured according to the service priority granularity, that is, different preset offset values ​​may be configured for different service priorities.

[0246] In some embodiments, the remote terminal may obtain the link measurement value between the service relay terminal and the network device through at least one of the following signaling sent by the service relay terminal:

[0247] Discovery message, SCI, SL MAC CE, PC5-RRC message.

[0248] In some embodiments, the remote terminal may obtain the link measurement value between the candidate relay terminal and the network device through at least one of the following signaling sent by the candidate relay terminal:

[0249] Discovery message, SCI, SL MAC CE, PC5-RRC message.

[0250] In some embodiments, the network device may configure the hysteresis value through RRC signaling, or the network device may configure the hysteresis value through a system broadcast message. Alternatively, the remote terminal may obtain the hysteresis value through RRC signaling sent by the network device, or the remote terminal may obtain the hysteresis value through a system broadcast message sent by the network device. Specifically, if the remote terminal is within network coverage and the remote terminal is in an RRC idle state or an RRC deactivated state, the network device may send the hysteresis value to the remote terminal through a system broadcast message. If the remote terminal is within network coverage and the remote terminal is in an RRC connected state, the network device may send the hysteresis value to the remote terminal through RRC dedicated signaling.

[0251] In some embodiments, the serving relay terminal configures the hysteresis value through a discovery message, or the serving relay terminal configures the hysteresis value through a PC5-RRC message, or the serving relay terminal configures the hysteresis value through a forwarded system broadcast message.

[0252] In some embodiments, the remote terminal can obtain the hysteresis value through a discovery message sent by the service relay terminal, or the remote terminal can obtain the hysteresis value through a PC5-RRC message sent by the service relay terminal, or the remote terminal can obtain the hysteresis value through a system broadcast message forwarded by the service relay terminal.

[0253] In some embodiments, the hysteresis value may also be referred to as a hysteresis parameter.

[0254] In some embodiments, the hysteresis value may be the same or different in different measurement events.

[0255] In some embodiments, the network device configures the preset offset value through RRC signaling, or the network device configures the preset offset value through a system broadcast message. Alternatively, the remote terminal may obtain the preset offset value through RRC signaling sent by the network device, or the remote terminal may obtain the preset offset value through a system broadcast message sent by the network device. Specifically, if the remote terminal is within network coverage and the remote terminal is in an RRC idle state or an RRC deactivated state, the network device sends the preset offset value to the remote terminal through a system broadcast message. If the remote terminal is within network coverage and the remote terminal is in an RRC connected state, the network device sends the preset offset value to the remote terminal through RRC dedicated signaling.

[0256] In some embodiments, the service relay terminal configures the preset offset value through a discovery message, or the service relay terminal configures the preset offset value through a PC5-RRC message, or the service relay terminal configures the preset offset value through a forwarded system broadcast message.

[0257] In some embodiments, the remote terminal can obtain the preset offset value through a discovery message sent by the service relay terminal, or the remote terminal can obtain the preset offset value through a PC5-RRC message sent by the service relay terminal, or the remote terminal can obtain the preset offset value through a system broadcast message forwarded by the service relay terminal.

[0258] Therefore, in an embodiment of the present application, a communication device (such as a network device or a service relay terminal) configures at least one measurement event for switching between a first relay link and a second relay link for a remote terminal, so that the remote terminal can report the measurement result based on the configured measurement event, and then the network device can determine whether to perform switching between relay links based on the reported measurement result.

[0259] Combination of the above Figure 3 , describes in detail the method embodiment of the present application, and the following is combined with Figures 4 to 8 , the device embodiments of the present application are described in detail. It should be understood that the device embodiments and the method embodiments correspond to each other, and similar descriptions can refer to the method embodiments.

[0260] Figure 4 FIG. 4 shows a schematic block diagram of a remote terminal 400 according to an embodiment of the present application. Figure 4 As shown, the remote terminal 400 includes:

[0261] The first communication unit 410 is used to receive first information;

[0262] The first information is used to configure at least one measurement event, and the at least one measurement event is a measurement event for switching between a first relay link and a second relay link, and both the first relay link and the second relay link are links for a remote terminal to access a network through a relay terminal.

[0263] In some embodiments, the at least one measurement event comprises a first measurement event;

[0264] Wherein, in the first measurement event, the link measurement value between the remote terminal and the service relay terminal is greater than or equal to a first threshold value, and / or the link measurement value between the service relay terminal and the network device is greater than or equal to a second threshold value.

[0265] In some embodiments, the admission condition of the first measurement event is that the link measurement value between the remote terminal and the service relay terminal is greater than or equal to the first threshold value, or the admission condition of the first measurement event is that the value obtained by subtracting the hysteresis value from the link measurement value between the remote terminal and the service relay terminal is greater than or equal to the first threshold value; and / or,

[0266] The exit condition of the first measurement event is that the link measurement value between the remote terminal and the service relay terminal is less than the first threshold value, or the exit condition of the first measurement event is that the value obtained by adding the hysteresis value to the link measurement value between the remote terminal and the service relay terminal is less than the first threshold value.

[0267] In some embodiments, the admission condition of the first measurement event is that the link measurement value between the service relay terminal and the network device is greater than or equal to the second threshold value, or the admission condition of the first measurement event is that the value obtained by subtracting the hysteresis value from the link measurement value between the service relay terminal and the network device is greater than or equal to the second threshold value; and / or,

[0268] The exit condition of the first measurement event is that the link measurement value between the service relay terminal and the network device is less than the second threshold value, or the exit condition of the first measurement event is that the value obtained by adding the hysteresis value to the link measurement value between the service relay terminal and the network device is less than the second threshold value.

[0269] In some embodiments, the remote terminal 400 further includes: a second communication unit 420;

[0270] When the admission condition of the first measurement event is met, the second communication unit 420 is used to report a first measurement result, where the first measurement result is used to determine whether to perform a switch between the first relay link and the second relay link; and / or,

[0271] When the exit condition of the first measurement event is met, the remote terminal does not report the measurement result.

[0272] In some embodiments, the at least one measurement event comprises a second measurement event;

[0273] In the second measurement event, the link measurement value between the remote terminal and the service relay terminal is less than a third threshold value, and / or the link measurement value between the service relay terminal and the network device is less than a fourth threshold value.

[0274] In some embodiments, the entry condition of the second measurement event is that the link measurement value between the remote terminal and the service relay terminal is less than the third threshold value, or the entry condition of the second measurement event is that the value obtained by adding the hysteresis value to the link measurement value between the remote terminal and the service relay terminal is less than the third threshold value; and / or,

[0275] The exit condition of the second measurement event is that the link measurement value between the remote terminal and the service relay terminal is greater than or equal to the third threshold value, or the exit condition of the second measurement event is that the value obtained by subtracting the hysteresis value from the link measurement value between the remote terminal and the service relay terminal is greater than or equal to the third threshold value.

[0276] In some embodiments, the admission condition of the second measurement event is that the link measurement value between the service relay terminal and the network device is less than the fourth threshold value, or the admission condition of the second measurement event is that the value obtained by adding the hysteresis value to the link measurement value between the service relay terminal and the network device is less than the fourth threshold value; and / or,

[0277] The exit condition of the second measurement event is that the link measurement value between the service relay terminal and the network device is greater than or equal to the fourth threshold value, or the exit condition of the second measurement event is that the value obtained by subtracting the hysteresis value from the link measurement value between the service relay terminal and the network device is greater than or equal to the fourth threshold value.

[0278] In some embodiments, the remote terminal 400 further includes: a second communication unit 420;

[0279] When the access condition of the second measurement event is met, the second communication unit 420 is used to report a second measurement result, where the second measurement result is used to determine whether to perform a switch between the first relay link and the second relay link; and / or,

[0280] When the exit condition of the second measurement event is met, the remote terminal does not report the measurement result.

[0281] In some embodiments, the at least one measurement event comprises a third measurement event;

[0282] In the third measurement event, the link measurement value between the remote terminal and the candidate relay terminal is greater than or equal to a fifth threshold value, and / or the link measurement value between the candidate relay terminal and the network device is greater than or equal to a sixth threshold value.

[0283] In some embodiments, the entry condition of the third measurement event is that the value obtained by adding a preset offset value to the link measurement value between the remote terminal and the candidate relay terminal is greater than or equal to the fifth threshold value, or the entry condition of the third measurement event is that the value obtained by adding a preset offset value to the link measurement value between the remote terminal and the candidate relay terminal and subtracting a hysteresis value is greater than or equal to the fifth threshold value; and / or,

[0284] The exit condition of the third measurement event is that the value obtained by adding the preset offset value to the link measurement value between the remote terminal and the candidate relay terminal is less than the fifth threshold value, or the exit condition of the third measurement event is that the value obtained by adding the preset offset value and the hysteresis value to the link measurement value between the remote terminal and the candidate relay terminal is less than the fifth threshold value.

[0285] In some embodiments, the entry condition of the third measurement event is that the link measurement value between the candidate relay terminal and the network device is greater than or equal to the sixth threshold value, or the entry condition of the third measurement event is that the value obtained by subtracting the hysteresis value from the link measurement value between the candidate relay terminal and the network device is greater than or equal to the sixth threshold value; and / or,

[0286] The exit condition of the third measurement event is that the link measurement value between the candidate relay terminal and the network device is less than the sixth threshold value, or the exit condition of the third measurement event is that the value obtained by adding the link measurement value between the candidate relay terminal and the network device to the hysteresis value is less than the sixth threshold value.

[0287] In some embodiments, the remote terminal 400 further includes: a second communication unit 420;

[0288] When the access condition of the third measurement event is met, the second communication unit 420 is used to report a third measurement result, where the third measurement result is used to determine whether to perform a switch between the first relay link and the second relay link; and / or,

[0289] When the exit condition of the third measurement event is met, the remote terminal does not report the measurement result.

[0290] In some embodiments, the at least one measurement event includes a fourth measurement event;

[0291] In which, in the fourth measurement event, the side link measurement value measured for the candidate relay terminal is higher than the side link measurement value measured for the serving relay terminal by a preset offset value, and / or the link measurement value between the candidate relay terminal and the network device is higher than the link measurement value between the serving relay terminal and the network device by a preset offset value.

[0292] In some embodiments, the entry condition of the fourth measurement event is that the value obtained by adding a preset offset value to the side link measurement value measured for the candidate relay terminal is greater than or equal to the value obtained by adding the preset offset value and the offset value corresponding to the current measurement object to the side link measurement value measured for the serving relay terminal, or the entry condition of the fourth measurement event is that the value obtained by adding the preset offset value to the side link measurement value measured for the candidate relay terminal and subtracting the hysteresis value is greater than or equal to the value obtained by adding the preset offset value and the offset value corresponding to the current measurement object to the side link measurement value measured for the serving relay terminal; and / or,

[0293] The exit condition of the fourth measurement event is that the value obtained by adding the preset offset value to the side link measurement value measured for the candidate relay terminal is smaller than the value obtained by adding the preset offset value and the offset value corresponding to the current measurement object to the side link measurement value measured for the service relay terminal, or the exit condition of the fourth measurement event is that the value obtained by adding the preset offset value and the hysteresis value to the side link measurement value measured for the candidate relay terminal is smaller than the value obtained by adding the preset offset value and the offset value corresponding to the current measurement object to the side link measurement value measured for the service relay terminal.

[0294] In some embodiments, the entry condition of the fourth measurement event is that the value obtained by adding a preset offset value to the link measurement value between the candidate relay terminal and the network device is greater than or equal to the value obtained by adding a preset offset value to the link measurement value between the serving relay terminal and the network device and the offset value corresponding to the current measurement object, or the entry condition of the fourth measurement event is that the value obtained by adding a preset offset value to the link measurement value between the candidate relay terminal and the network device and subtracting a hysteresis value is greater than or equal to the value obtained by adding a preset offset value to the link measurement value between the candidate relay terminal and the network device and the offset value corresponding to the current measurement object; and / or,

[0295] The exit condition of the fourth measurement event is that the value obtained by adding the preset offset value to the link measurement value between the candidate relay terminal and the network device is smaller than the value obtained by adding the preset offset value and the offset value corresponding to the current measurement object to the link measurement value between the service relay terminal and the network device, or the exit condition of the fourth measurement event is that the value obtained by adding the preset offset value and the hysteresis value to the link measurement value between the candidate relay terminal and the network device is smaller than the value obtained by adding the preset offset value and the offset value corresponding to the current measurement object to the link measurement value between the service relay terminal and the network device.

[0296] In some embodiments, the remote terminal 400 further includes: a second communication unit 420;

[0297] When the access condition of the fourth measurement event is met, the second communication unit 420 is used to report a fourth measurement result, where the fourth measurement result is used to determine whether to perform a switch between the first relay link and the second relay link; and / or,

[0298] When the exit condition of the fourth measurement event is met, the remote terminal does not report the measurement result.

[0299] In some embodiments, the at least one measurement event includes a fifth measurement event;

[0300] In which, in the fifth measurement event, the link measurement value between the remote terminal and the service relay terminal is less than the seventh threshold value and the link measurement value between the remote terminal and the candidate relay terminal is greater than or equal to the eighth threshold value, and / or, the link measurement value between the service relay terminal and the network device is less than the ninth threshold value and the link measurement value between the candidate relay terminal and the network device is greater than or equal to the tenth threshold value.

[0301] In some embodiments, the admission condition of the fifth measurement event is that the link measurement value between the remote terminal and the service relay terminal is less than the seventh threshold value, or, the admission condition of the fifth measurement event is that the value obtained by adding the hysteresis value to the link measurement value between the remote terminal and the service relay terminal is less than the seventh threshold value, or, the admission condition of the fifth measurement event is that the value obtained by adding the preset offset value to the link measurement value between the remote terminal and the candidate relay terminal is greater than or equal to the eighth threshold value, or, the admission condition of the fifth measurement event is that the value obtained by adding the preset offset value to the link measurement value between the remote terminal and the candidate relay terminal and subtracting the hysteresis value is greater than or equal to the eighth threshold value; and / or,

[0302] The exit condition of the fifth measurement event is that the link measurement value between the remote terminal and the service relay terminal is greater than or equal to the seventh threshold value, or, the exit condition of the fifth measurement event is that the value obtained by subtracting the hysteresis value from the link measurement value between the remote terminal and the service relay terminal is greater than or equal to the seventh threshold value, or, the exit condition of the fifth measurement event is that the value obtained by adding the preset offset value to the link measurement value between the remote terminal and the candidate relay terminal is less than the eighth threshold value, or, the exit condition of the fifth measurement event is that the value obtained by adding the preset offset value and the hysteresis value to the link measurement value between the remote terminal and the candidate relay terminal is less than the eighth threshold value.

[0303] In some embodiments, the entry condition of the fifth measurement event is that the value obtained by adding the hysteresis value to the link measurement value between the serving relay terminal and the network device is less than the ninth threshold value, or the entry condition of the fifth measurement event is that the value obtained by adding the preset offset value to the link measurement value between the candidate relay terminal and the network device and subtracting the hysteresis value is greater than or equal to the tenth threshold value; and / or,

[0304] The exit condition of the fifth measurement event is that the value obtained by subtracting the hysteresis value from the link measurement value between the service relay terminal and the network device is less than the ninth threshold value, or the exit condition of the fifth measurement event is that the value obtained by subtracting the preset offset value and adding the hysteresis value from the link measurement value between the candidate relay terminal and the network device is less than the tenth threshold value.

[0305] In some embodiments, the remote terminal 400 further includes: a second communication unit 420;

[0306] When the admission condition of the fifth measurement event is met, the second communication unit 420 is used to report a fifth measurement result, where the fifth measurement result is used to determine whether to perform a switch between the first relay link and the second relay link; and / or,

[0307] When the exit condition of the fifth measurement event is met, the remote terminal does not report the measurement result.

[0308] In some embodiments, the preset offset value is configured according to at least one of the following granularities:

[0309] Cell granularity, remote terminal granularity, relay terminal granularity, and service priority granularity.

[0310] In some embodiments, the remote terminal obtains the link measurement value between the service relay terminal and the network device through at least one of the following signaling sent by the service relay terminal:

[0311] Discovery message, side control information SCI, side media access control layer control unit SL MAC CE, PC5-radio resource control RRC message.

[0312] In some embodiments, the remote terminal obtains the link measurement value between the candidate relay terminal and the network device through at least one of the following signaling sent by the candidate relay terminal:

[0313] Discovery message, SCI, SL MAC CE, PC5-RRC message.

[0314] In some embodiments, the remote terminal obtains the hysteresis value through RRC signaling sent by the network device, or the remote terminal obtains the hysteresis value through a system broadcast message sent by the network device, or the remote terminal obtains the hysteresis value through a discovery message sent by a service relay terminal, or the remote terminal obtains the hysteresis value through a PC5-RRC message sent by the service relay terminal, or the remote terminal obtains the hysteresis value through a system broadcast message forwarded by the service relay terminal.

[0315] In some embodiments, the remote terminal obtains the preset offset value through RRC signaling sent by the network device, or the remote terminal obtains the preset offset value through a system broadcast message sent by the network device, or the remote terminal obtains the preset offset value through a discovery message sent by a service relay terminal, or the remote terminal obtains the preset offset value through a PC5-RRC message sent by the service relay terminal, or the remote terminal obtains the preset offset value through a system broadcast message forwarded by the service relay terminal.

[0316] In some embodiments, the communication unit may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip. The processing unit may be one or more processors.

[0317] It should be understood that the remote terminal 400 according to the embodiment of the present application may correspond to the remote terminal in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the remote terminal 400 are respectively to achieve Figure 3 For the sake of brevity, the corresponding process of the remote terminal in the method 300 is not repeated here.

[0318] Figure 5 FIG. 5 shows a schematic block diagram of a communication device 500 according to an embodiment of the present application. Figure 5 As shown, the communication device 500 includes:

[0319] A first communication unit 510, configured to send first information;

[0320] The first information is used to configure at least one measurement event, and the at least one measurement event is a measurement event for switching between a first relay link and a second relay link, and both the first relay link and the second relay link are links for a remote terminal to access a network through a relay terminal.

[0321] In some embodiments, the at least one measurement event comprises a first measurement event;

[0322] Wherein, in the first measurement event, the link measurement value between the remote terminal and the service relay terminal is greater than or equal to a first threshold value, and / or the link measurement value between the service relay terminal and the network device is greater than or equal to a second threshold value.

[0323] In some embodiments, the admission condition of the first measurement event is that the link measurement value between the remote terminal and the service relay terminal is greater than or equal to the first threshold value, or the admission condition of the first measurement event is that the value obtained by subtracting the hysteresis value from the link measurement value between the remote terminal and the service relay terminal is greater than or equal to the first threshold value; and / or,

[0324] The exit condition of the first measurement event is that the link measurement value between the remote terminal and the service relay terminal is less than the first threshold value, or the exit condition of the first measurement event is that the value obtained by adding the hysteresis value to the link measurement value between the remote terminal and the service relay terminal is less than the first threshold value.

[0325] In some embodiments, the admission condition of the first measurement event is that the link measurement value between the service relay terminal and the network device is greater than or equal to the second threshold value, or the admission condition of the first measurement event is that the value obtained by subtracting the hysteresis value from the link measurement value between the service relay terminal and the network device is greater than or equal to the second threshold value; and / or,

[0326] The exit condition of the first measurement event is that the link measurement value between the service relay terminal and the network device is less than the second threshold value, or the exit condition of the first measurement event is that the value obtained by adding the hysteresis value to the link measurement value between the service relay terminal and the network device is less than the second threshold value.

[0327] In some embodiments, the communication device further includes a second communication unit 520;

[0328] The second communication unit 520 is used to receive the first measurement result;

[0329] The first measurement result is a measurement result sent by the remote terminal when an access condition of the first measurement event is met, and the first measurement result is used to determine whether to perform switching between the first relay link and the second relay link.

[0330] In some embodiments, the at least one measurement event comprises a second measurement event;

[0331] In the second measurement event, the link measurement value between the remote terminal and the service relay terminal is less than a third threshold value, and / or the link measurement value between the service relay terminal and the network device is less than a fourth threshold value.

[0332] In some embodiments, the entry condition of the second measurement event is that the link measurement value between the remote terminal and the service relay terminal is less than the third threshold value, or the entry condition of the second measurement event is that the value obtained by adding the hysteresis value to the link measurement value between the remote terminal and the service relay terminal is less than the third threshold value; and / or,

[0333] The exit condition of the second measurement event is that the link measurement value between the remote terminal and the service relay terminal is greater than or equal to the third threshold value, or the exit condition of the second measurement event is that the value obtained by subtracting the hysteresis value from the link measurement value between the remote terminal and the service relay terminal is greater than or equal to the third threshold value.

[0334] In some embodiments, the admission condition of the second measurement event is that the link measurement value between the service relay terminal and the network device is less than the fourth threshold value, or the admission condition of the second measurement event is that the value obtained by adding the hysteresis value to the link measurement value between the service relay terminal and the network device is less than the fourth threshold value; and / or,

[0335] The exit condition of the second measurement event is that the link measurement value between the service relay terminal and the network device is greater than or equal to the fourth threshold value, or the exit condition of the second measurement event is that the value obtained by subtracting the hysteresis value from the link measurement value between the service relay terminal and the network device is greater than or equal to the fourth threshold value.

[0336] In some embodiments, the communication device further includes a second communication unit 520;

[0337] The second communication unit 520 is used to receive a second measurement result;

[0338] The second measurement result is a measurement result sent by the remote terminal when an access condition of the second measurement event is met, and the second measurement result is used to determine whether to perform switching between the first relay link and the second relay link.

[0339] In some embodiments, the at least one measurement event comprises a third measurement event;

[0340] In the third measurement event, the link measurement value between the remote terminal and the candidate relay terminal is greater than or equal to a fifth threshold value, and / or the link measurement value between the candidate relay terminal and the network device is greater than or equal to a sixth threshold value.

[0341] In some embodiments, the entry condition of the third measurement event is that the value obtained by adding a preset offset value to the link measurement value between the remote terminal and the candidate relay terminal is greater than or equal to the fifth threshold value, or the entry condition of the third measurement event is that the value obtained by adding a preset offset value to the link measurement value between the remote terminal and the candidate relay terminal and subtracting a hysteresis value is greater than or equal to the fifth threshold value; and / or,

[0342] The exit condition of the third measurement event is that the value obtained by adding the preset offset value to the link measurement value between the remote terminal and the candidate relay terminal is less than the fifth threshold value, or the exit condition of the third measurement event is that the value obtained by adding the preset offset value and the hysteresis value to the link measurement value between the remote terminal and the candidate relay terminal is less than the fifth threshold value.

[0343] In some embodiments, the entry condition of the third measurement event is that the link measurement value between the candidate relay terminal and the network device is greater than or equal to the sixth threshold value, or the entry condition of the third measurement event is that the value obtained by subtracting the hysteresis value from the link measurement value between the candidate relay terminal and the network device is greater than or equal to the sixth threshold value; and / or,

[0344] The exit condition of the third measurement event is that the link measurement value between the candidate relay terminal and the network device is less than the sixth threshold value, or the exit condition of the third measurement event is that the value obtained by adding the link measurement value between the candidate relay terminal and the network device to the hysteresis value is less than the sixth threshold value.

[0345] In some embodiments, the communication device further includes a second communication unit 520;

[0346] The second communication unit 520 is used to receive a third measurement result;

[0347] The third measurement result is a measurement result sent by the remote terminal when an access condition of the third measurement event is met, and the third measurement result is used to determine whether to perform a switch between the first relay link and the second relay link.

[0348] In some embodiments, the at least one measurement event includes a fourth measurement event;

[0349] In which, in the fourth measurement event, the side link measurement value measured for the candidate relay terminal is higher than the side link measurement value measured for the serving relay terminal by a preset offset value, and / or the link measurement value between the candidate relay terminal and the network device is higher than the link measurement value between the serving relay terminal and the network device by a preset offset value.

[0350] In some embodiments, the entry condition of the fourth measurement event is that the value obtained by adding a preset offset value to the side link measurement value measured for the candidate relay terminal is greater than or equal to the value obtained by adding the preset offset value and the offset value corresponding to the current measurement object to the side link measurement value measured for the serving relay terminal, or the entry condition of the fourth measurement event is that the value obtained by adding the preset offset value to the side link measurement value measured for the candidate relay terminal and subtracting the hysteresis value is greater than or equal to the value obtained by adding the preset offset value and the offset value corresponding to the current measurement object to the side link measurement value measured for the serving relay terminal; and / or,

[0351] The exit condition of the fourth measurement event is that the value obtained by adding the preset offset value to the side link measurement value measured for the candidate relay terminal is smaller than the value obtained by adding the preset offset value and the offset value corresponding to the current measurement object to the side link measurement value measured for the service relay terminal, or the exit condition of the fourth measurement event is that the value obtained by adding the preset offset value and the hysteresis value to the side link measurement value measured for the candidate relay terminal is smaller than the value obtained by adding the preset offset value and the offset value corresponding to the current measurement object to the side link measurement value measured for the service relay terminal.

[0352] In some embodiments, the entry condition of the fourth measurement event is that the value obtained by adding a preset offset value to the link measurement value between the candidate relay terminal and the network device is greater than or equal to the value obtained by adding a preset offset value to the link measurement value between the serving relay terminal and the network device and the offset value corresponding to the current measurement object, or the entry condition of the fourth measurement event is that the value obtained by adding a preset offset value to the link measurement value between the candidate relay terminal and the network device and subtracting a hysteresis value is greater than or equal to the value obtained by adding a preset offset value to the link measurement value between the candidate relay terminal and the network device and the offset value corresponding to the current measurement object; and / or,

[0353] The exit condition of the fourth measurement event is that the value obtained by adding the preset offset value to the link measurement value between the candidate relay terminal and the network device is smaller than the value obtained by adding the preset offset value and the offset value corresponding to the current measurement object to the link measurement value between the service relay terminal and the network device, or the exit condition of the fourth measurement event is that the value obtained by adding the preset offset value and the hysteresis value to the link measurement value between the candidate relay terminal and the network device is smaller than the value obtained by adding the preset offset value and the offset value corresponding to the current measurement object to the link measurement value between the service relay terminal and the network device.

[0354] In some embodiments, the communication device further includes a second communication unit 520;

[0355] The second communication unit 520 is used to receive a fourth measurement result;

[0356] The fourth measurement result is a measurement result sent by the remote terminal when an access condition of the fourth measurement event is met, and the fourth measurement result is used to determine whether to perform switching between the first relay link and the second relay link.

[0357] In some embodiments, the at least one measurement event includes a fifth measurement event;

[0358] In which, in the fifth measurement event, the link measurement value between the remote terminal and the service relay terminal is less than the seventh threshold value and the link measurement value between the remote terminal and the candidate relay terminal is greater than or equal to the eighth threshold value, and / or, the link measurement value between the service relay terminal and the network device is less than the ninth threshold value and the link measurement value between the candidate relay terminal and the network device is greater than or equal to the tenth threshold value.

[0359] In some embodiments, the admission condition of the fifth measurement event is that the link measurement value between the remote terminal and the service relay terminal is less than the seventh threshold value, or, the admission condition of the fifth measurement event is that the value obtained by adding the hysteresis value to the link measurement value between the remote terminal and the service relay terminal is less than the seventh threshold value, or, the admission condition of the fifth measurement event is that the value obtained by adding the preset offset value to the link measurement value between the remote terminal and the candidate relay terminal is greater than or equal to the eighth threshold value, or, the admission condition of the fifth measurement event is that the value obtained by adding the preset offset value to the link measurement value between the remote terminal and the candidate relay terminal and subtracting the hysteresis value is greater than or equal to the eighth threshold value; and / or,

[0360] The exit condition of the fifth measurement event is that the link measurement value between the remote terminal and the service relay terminal is greater than or equal to the seventh threshold value, or, the exit condition of the fifth measurement event is that the value obtained by subtracting the hysteresis value from the link measurement value between the remote terminal and the service relay terminal is greater than or equal to the seventh threshold value, or, the exit condition of the fifth measurement event is that the value obtained by adding the preset offset value to the link measurement value between the remote terminal and the candidate relay terminal is less than the eighth threshold value, or, the exit condition of the fifth measurement event is that the value obtained by adding the preset offset value and the hysteresis value to the link measurement value between the remote terminal and the candidate relay terminal is less than the eighth threshold value.

[0361] In some embodiments, the entry condition of the fifth measurement event is that the value obtained by adding the hysteresis value to the link measurement value between the serving relay terminal and the network device is less than the ninth threshold value, or the entry condition of the fifth measurement event is that the value obtained by adding the preset offset value to the link measurement value between the candidate relay terminal and the network device and subtracting the hysteresis value is greater than or equal to the tenth threshold value; and / or,

[0362] The exit condition of the fifth measurement event is that the value obtained by subtracting the hysteresis value from the link measurement value between the service relay terminal and the network device is less than the ninth threshold value, or the exit condition of the fifth measurement event is that the value obtained by subtracting the preset offset value and adding the hysteresis value from the link measurement value between the candidate relay terminal and the network device is less than the tenth threshold value.

[0363] In some embodiments, the communication device further includes a second communication unit 520;

[0364] The second communication unit 520 is used to receive the fifth measurement result;

[0365] The fifth measurement result is a measurement result sent by the remote terminal when an access condition of the fifth measurement event is met, and the fifth measurement result is used to determine whether to perform switching between the first relay link and the second relay link.

[0366] In some embodiments, the preset offset value is configured according to at least one of the following granularities:

[0367] Cell granularity, remote terminal granularity, relay terminal granularity, and service priority granularity.

[0368] In some embodiments, when the communication device is a service relay terminal, the service relay terminal carries the link measurement value between the service relay terminal and the network device through at least one of the following signalings:

[0369] Discovery message, side control information SCI, side media access control layer control unit SL MAC CE, PC5-radio resource control RRC message.

[0370] In some embodiments, when the communication device is a network device, the network device configures the hysteresis value through RRC signaling, or the network device configures the hysteresis value through a system broadcast message; or,

[0371] In the case where the communication device is a service relay terminal, the service relay terminal configures the hysteresis value through a discovery message, or the service relay terminal configures the hysteresis value through a PC5-RRC message, or the service relay terminal configures the hysteresis value through a forwarded system broadcast message.

[0372] In some embodiments, when the communication device is a network device, the network device configures the preset offset value through RRC signaling, or the network device configures the preset offset value through a system broadcast message; or,

[0373] In the case where the communication device is a service relay terminal, the service relay terminal configures the preset offset value through a discovery message, or the service relay terminal configures the preset offset value through a PC5-RRC message, or the service relay terminal configures the preset offset value through a forwarded system broadcast message.

[0374] In some embodiments, the communication device is a network device or a service relay terminal.

[0375] In some embodiments, the communication unit may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip. The processing unit may be one or more processors.

[0376] It should be understood that the communication device 500 according to the embodiment of the present application may correspond to the communication device in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the communication device 500 are respectively to implement Figure 3 For the sake of brevity, the corresponding process of the communication device in the method 300 is not repeated here.

[0377] Figure 6 It is a schematic structural diagram of a communication device 600 provided in an embodiment of the present application. Figure 6 The communication device 600 shown includes a processor 610, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0378] In some embodiments, Figure 6 As shown, the communication device 600 may further include a memory 620. The processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present application.

[0379] The memory 620 may be a separate device independent of the processor 610 , or may be integrated into the processor 610 .

[0380] In some embodiments, Figure 6 As shown, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices.

[0381] The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include an antenna, and the number of the antennas may be one or more.

[0382] In some embodiments, the processor 610 may implement the functions of a processing unit in a remote terminal, or the processor 610 may implement the functions of a processing unit in a communication device, which will not be described in detail here for the sake of brevity.

[0383] In some embodiments, the transceiver 630 may implement the functions of a communication unit in a remote terminal, which will not be described in detail here for the sake of brevity.

[0384] In some embodiments, the transceiver 630 may implement the function of a communication unit in a communication device, which will not be described in detail here for the sake of brevity.

[0385] In some embodiments, the communication device 600 may specifically be a remote terminal of the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the remote terminal in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0386] In some embodiments, the communication device 600 may specifically be the communication device of the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the communication device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0387] Figure 7 It is a schematic structural diagram of the device of an embodiment of the present application. Figure 7 The device 700 shown includes a processor 710, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0388] In some embodiments, Figure 7 As shown, the apparatus 700 may further include a memory 720. The processor 710 may call and run a computer program from the memory 720 to implement the method in the embodiment of the present application.

[0389] The memory 720 may be a separate device independent of the processor 710 , or may be integrated into the processor 710 .

[0390] In some embodiments, the apparatus 700 may further include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips. Optionally, the processor 710 may be located inside or outside the chip.

[0391] In some embodiments, the processor 710 may implement the functions of a processing unit in a remote terminal, or the processor 710 may implement the functions of a processing unit in a communication device, which will not be described in detail here for the sake of brevity.

[0392] In some embodiments, the input interface 730 may implement the functionality of a communication unit in a remote terminal, or the input interface 730 may implement the functionality of a communication unit in a communication device.

[0393] In some embodiments, the apparatus 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips. Optionally, the processor 710 may be located inside or outside the chip.

[0394] In some embodiments, the output interface 740 may implement the functionality of a communication unit in a remote terminal, or the output interface 740 may implement the functionality of a communication unit in a communication device.

[0395] In some embodiments, the device can be applied to the remote terminal in the embodiments of the present application, and the device can implement the corresponding processes implemented by the remote terminal in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0396] In some embodiments, the apparatus may be applied to the communication equipment in the embodiments of the present application, and the apparatus may implement the corresponding processes implemented by the communication equipment in the various methods in the embodiments of the present application, which will not be described in detail here for the sake of brevity.

[0397] In some embodiments, the device mentioned in the embodiments of the present application may also be a chip, for example, a system-on-chip, a system-on-chip, a chip system, or a system-on-chip chip.

[0398] Figure 8 8 is a schematic block diagram of a communication system 800 provided in an embodiment of the present application. Figure 8 As shown, the communication system 800 includes a remote terminal 810 , a relay terminal 820 and a network device 830 .

[0399] Among them, the remote terminal 810 can be used to implement the corresponding functions implemented by the remote terminal in the above method, the remote terminal 810 can be used to implement the corresponding functions implemented by the relay terminal in the above method, and the network device 830 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they will not be repeated here.

[0400] It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor are combined and performed. The software module can be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, and other mature storage media in the art. 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.

[0401] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0402] It should be understood that the above-mentioned memory is exemplary but not restrictive. For example, the memory in the embodiments of the present application may also be 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 link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

[0403] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0404] In some embodiments, the computer-readable storage medium can be applied to the communication device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the communication device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0405] In some embodiments, the computer-readable storage medium can be applied to the remote terminal in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the remote terminal in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0406] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0407] In some embodiments, the computer program product can be applied to the communication device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the communication device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0408] In some embodiments, the computer program product can be applied to the remote terminal in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the remote terminal in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0409] The embodiment of the present application also provides a computer program.

[0410] In some embodiments, the computer program can be applied to the communication device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the communication device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0411] In some embodiments, the computer program can be applied to the remote terminal in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the remote terminal in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0412] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0413] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0414] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0415] 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 distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0416] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0417] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. In view of such an understanding, the technical solution of the present application can be embodied in the form of a software product in essence or in other words, the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0418] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A wireless communication method, characterized in that: include: The remote terminal receives the first information; The first information is used to configure at least one measurement event, and the at least one measurement event is a measurement event for switching between a first relay link and a second relay link, and both the first relay link and the second relay link are links for a remote terminal to access a network through a relay terminal.

2. The method according to claim 1, characterized in that The at least one measurement event comprises a fifth measurement event; Wherein, in the fifth measurement event, the link measurement value between the remote terminal and the serving relay terminal is less than a seventh threshold value and the link measurement value between the remote terminal and the candidate relay terminal is greater than an eighth threshold value.

3. The method according to claim 2, characterized in that The entry condition of the fifth measurement event is that the value obtained by adding the hysteresis value to the link measurement value between the remote terminal and the serving relay terminal is less than the seventh threshold value, or the entry condition of the fifth measurement event is that the value obtained by adding the preset offset value to the link measurement value between the remote terminal and the candidate relay terminal and subtracting the hysteresis value is greater than the eighth threshold value.

4. The method according to claim 2 or 3, characterized in that The exit condition of the fifth measurement event is that the value obtained by subtracting the hysteresis value from the link measurement value between the remote terminal and the serving relay terminal is greater than the seventh threshold value, or, the exit condition of the fifth measurement event is that the value obtained by adding the preset offset value to the link measurement value between the remote terminal and the candidate relay terminal is less than the eighth threshold value, or, the exit condition of the fifth measurement event is that the value obtained by adding the preset offset value and the hysteresis value to the link measurement value between the remote terminal and the candidate relay terminal is less than the eighth threshold value.

5. The method according to claim 3 or 4, characterized in that The method further comprises: If an admission condition of the fifth measurement event is met, the remote terminal reports a fifth measurement result, where the fifth measurement result is used to determine whether to perform a switch between the first relay link and the second relay link; and / or, When the exit condition of the fifth measurement event is met, the remote terminal does not report the measurement result.

6. The method according to claim 5, characterized in that In a case where the fifth measurement result satisfies a switching condition, the fifth measurement result is used by the network device to determine to perform a switching between the first relay link and the second relay link; as well as In a case where the fifth measurement result does not satisfy the switching condition, the fifth measurement result is used by the network device to determine not to perform switching between the first relay link and the second relay link.

7. The method according to any one of claims 3 to 6, characterized in that The preset offset value is configured according to at least one of the following granularities: Cell granularity, remote terminal granularity, relay terminal granularity, and service priority granularity.

8. The method according to any one of claims 2 to 7, characterized in that The remote terminal obtains the link measurement value between the service relay terminal and the network device through at least one of the following signalings sent by the service relay terminal: Discovery message, side control information SCI, side media access control layer control unit SL MAC CE, PC5-radio resource control RRC message.

9. The method according to any one of claims 2 to 8, characterized in that The remote terminal obtains the link measurement value between the candidate relay terminal and the network device through at least one of the following signalings sent by the candidate relay terminal: Discovery message, SCI, SL MAC CE, PC5-RRC message.

10. The method according to any one of claims 3 to 9, characterized in that The remote terminal obtains the hysteresis value through RRC signaling sent by a network device.

11. The method according to any one of claims 2 to 10, characterized in that The seventh threshold value or the eighth threshold value is configured by the service relay terminal through a discovery message, or configured by the service relay terminal through a PC5-RRC message, or configured by the service relay terminal through a forwarded system broadcast message.

12. The method according to any one of claims 2 to 11, characterized in that The at least one measurement event is configured by a network device or a service relay terminal, wherein: In a case where the at least one measurement event is configured by the network device, the first information is forwarded by the serving relay terminal to the remote terminal; or In a case where the at least one measurement event is configured by the network device, the first information is carried through RRC signaling.

13. A wireless communication method, characterized in that: include: The first information is used to configure at least one measurement event, and the at least one measurement event is a measurement event for switching between a first relay link and a second relay link, and both the first relay link and the second relay link are links for a remote terminal to access a network through a relay terminal.

14. The method according to claim 13, characterized in that The at least one measurement event comprises a fifth measurement event; Wherein, in the fifth measurement event, the link measurement value between the remote terminal and the serving relay terminal is less than a seventh threshold value and the link measurement value between the remote terminal and the candidate relay terminal is greater than an eighth threshold value.

15. The method according to claim 14, characterized in that The entry condition of the fifth measurement event is that the value obtained by adding the hysteresis value to the link measurement value between the remote terminal and the serving relay terminal is less than the seventh threshold value, or the entry condition of the fifth measurement event is that the value obtained by adding the preset offset value to the link measurement value between the remote terminal and the candidate relay terminal and subtracting the hysteresis value is greater than the eighth threshold value.

16. The method according to claim 14 or 15, characterized in that The exit condition of the fifth measurement event is that the value obtained by subtracting the hysteresis value from the link measurement value between the remote terminal and the serving relay terminal is greater than the seventh threshold value, or, the exit condition of the fifth measurement event is that the value obtained by adding the preset offset value to the link measurement value between the remote terminal and the candidate relay terminal is less than the eighth threshold value, or, the exit condition of the fifth measurement event is that the value obtained by adding the preset offset value and the hysteresis value to the link measurement value between the remote terminal and the candidate relay terminal is less than the eighth threshold value.

17. The method according to claim 15 or 16, characterized in that The method further comprises: The communication device receives a fifth measurement result; The fifth measurement result is a measurement result sent by the remote terminal when an access condition of the fifth measurement event is met, and the fifth measurement result is used to determine whether to perform switching between the first relay link and the second relay link.

18. The method according to claim 17, characterized in that In a case where the fifth measurement result satisfies a switching condition, the fifth measurement result is used by the network device to determine to perform a switching between the first relay link and the second relay link; as well as In a case where the fifth measurement result does not satisfy the switching condition, the fifth measurement result is used by the network device to determine not to perform switching between the first relay link and the second relay link.

19. The method according to any one of claims 15 to 18, characterized in that The preset offset value is configured according to at least one of the following granularities: Cell granularity, remote terminal granularity, relay terminal granularity, and service priority granularity.

20. The method according to any one of claims 14 to 19, characterized in that In the case where the communication device is a service relay terminal, the service relay terminal carries the link measurement value between the service relay terminal and the network device through at least one of the following signalings: Discovery message, side control information SCI, side media access control layer control unit SL MAC CE, PC5-radio resource control RRC message.

21. The method according to any one of claims 15 to 20, characterized in that In the case where the communication device is a network device, the network device configures the hysteresis value through RRC signaling.

22. The method according to any one of claims 13 to 21, characterized in that The seventh threshold value or the eighth threshold value is configured by the service relay terminal through a discovery message, or configured by the service relay terminal through a PC5-RRC message, or configured by the service relay terminal through a forwarded system broadcast message.

23. The method according to any one of claims 13 to 22, characterized in that The at least one measurement event is configured by a network device or a service relay terminal, wherein: In a case where the at least one measurement event is configured by the network device, the first information is forwarded by the serving relay terminal to the remote terminal; or In a case where the at least one measurement event is configured by the network device, the first information is carried through RRC signaling.

24. A remote terminal, characterized in that: include: A first communication unit, configured to receive first information; The first information is used to configure at least one measurement event, and the at least one measurement event is a measurement event for switching between a first relay link and a second relay link, and both the first relay link and the second relay link are links for a remote terminal to access a network through a relay terminal.

25. A communication device, characterized in that: include: A first communication unit, configured to send first information; The first information is used to configure at least one measurement event, and the at least one measurement event is a measurement event for switching between a first relay link and a second relay link, and both the first relay link and the second relay link are links for a remote terminal to access a network through a relay terminal.

26. A remote terminal, characterized in that: include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory, so that the remote terminal executes the method as claimed in any one of claims 1 to 12.

27. A communication device, characterized in that: include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory, so that the communication device executes the method according to any one of claims 13 to 23.

28. A chip, characterized in that: include: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 12.

29. A chip, characterized in that: include: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 13 to 23.

30. A computer-readable storage medium, characterized in that: Used for storing a computer program, when the computer program is executed, the method according to any one of claims 1 to 12 is implemented.

31. A computer-readable storage medium, characterized in that: Used for storing a computer program, when the computer program is executed, the method according to any one of claims 13 to 23 is implemented.

Images