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

Wireless communication method and device Technical Field

[0001] The present invention relates 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 sidelink relay links (i.e., links through which remote terminals access the network via relay terminals) and sidelink relay links (i.e., links through which remote terminals access the network via relay terminals). How remote terminals report measurement results so that network devices can determine whether to perform switching between sidelink relay links is a problem that needs to be solved.

[0003] Summary of the Invention

[0004] 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 results based on the configured measurement event, and the network device can determine whether to perform switching between relay links based on the reported measurement results.

[0005] In a first aspect, a wireless communication method is provided, the method comprising:

[0006] The remote terminal receives the first information;

[0007] The first information is used to configure at least one measurement event, which is a measurement event for switching between a first relay link and a second relay link. Both the first relay link and the second relay link are links for a remote terminal to access a network through a relay terminal.

[0008] In a second aspect, a wireless communication method is provided, the method comprising:

[0009] The communication device sends first information;

[0010] The first information is used to configure at least one measurement event, which is a measurement event for switching between a first relay link and a second relay link. Both the first relay link and the second relay link are links for a remote terminal to access a network through a relay terminal.

[0011] In a third aspect, a remote terminal is provided for executing the method in the first aspect.

[0012] Specifically, the remote terminal includes a functional module for executing the method in the first aspect above.

[0013] In a fourth aspect, a communication device is provided for executing the method in the second aspect.

[0014] Specifically, the communication device includes a functional module for executing the method in the above-mentioned second aspect.

[0015] 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.

[0016] 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.

[0017] In a seventh aspect, a device is provided for implementing the method in any one of the first to second aspects above.

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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 results 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 results. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG1 is a schematic diagram of a communication system architecture applied in an embodiment of the present application.

[0024] FIG2 is a schematic diagram of another communication system architecture applied in an embodiment of the present application.

[0025] FIG3 is a schematic flowchart of a wireless communication method provided according to an embodiment of the present application.

[0026] FIG4 is a schematic block diagram of a remote terminal provided according to an embodiment of the present application.

[0027] FIG5 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

[0028] FIG6 is a schematic block diagram of another communication device provided according to an embodiment of the present application.

[0029] FIG7 is a schematic block diagram of a device provided according to an embodiment of the present application.

[0030] FIG8 is a schematic block diagram of a communication system provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0031] The following will describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. With respect to the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0032] 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-based access to unlicensed spectrum (LTE-U) system on unlicensed spectrum, NR-based access to unlicensed spectrum (NR-U) system on unlicensed spectrum, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Internet of Things (IoT), Wireless Fidelity (WFI) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system, sixth-generation communication (6G) system or other communication systems.

[0033] 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 (D2D) communication, machine-to-machine (M2M) 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.

[0034] 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, an independent (SA) networking scenario, or a non-standalone (NSA) networking scenario.

[0035] In some embodiments, the communication system in the embodiments of the present application can be applied to an 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 an authorized spectrum, where the authorized spectrum can also be considered as an unshared spectrum.

[0036] 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 410MHz to 7.125GHz), can also be applied to the FR2 frequency band (corresponding to the frequency band range of 24.25GHz to 52.6GHz), and can also be applied to new frequency bands such as high-frequency bands corresponding to the frequency band range of 52.6GHz to 71GHz or the frequency band range of 71GHz to 114.25GHz.

[0037] 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.

[0038] The terminal device can be a 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 capabilities, 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.

[0039] In an embodiment 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 (such as airplanes, balloons and satellites, etc.).

[0040] In an embodiment of the present application, the terminal device may 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.

[0041] As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices may also be called 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 achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are fully functional, large in size, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those 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 smart bracelets and smart jewelry for vital sign monitoring.

[0042] 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 (BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (eNB or eNodeB) in LTE, or a relay station or access point, or a network device or base station (gNB) or a transmission reception point (TRP) in a vehicle-mounted device, a wearable device, and an NR network, or a network device in a future evolved PLMN network or a network device in an NTN network, etc.

[0043] As an example and not a limitation, in an embodiment of the present application, the network device may have a mobile feature, 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.

[0044] 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). 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.

[0045] It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" is simply a description of an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the related objects are in an "or" relationship.

[0046] The terms used in the embodiments of this application are intended only to explain the specific embodiments of this application and are not intended to limit this application. The terms "first," "second," "third," and "fourth," etc. in the specification and claims of this application and the accompanying drawings are used to distinguish different objects, not to describe a specific order. In addition, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions.

[0047] It should be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" 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 between A and B.

[0048] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0049] In the embodiments of the present application, "pre-definition" or "pre-configuration" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., a terminal device and a network device). The present application does not limit the specific implementation method. For example, pre-definition may refer to information defined in a protocol.

[0050] In the embodiments of the present application, the “protocol” may refer to a standard protocol in the communications 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.

[0051] 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 combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the scope of protection of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0052] Figure 1 is a schematic diagram of a communication system applicable to embodiments of the present application. Transmission resources for vehicle-mounted terminals (vehicle-mounted terminal 121 and vehicle-mounted terminal 122) are allocated by base station 110. The vehicle-mounted terminals transmit data on the sidelink based on the resources allocated by base station 110. Specifically, base station 110 can allocate resources for a single transmission to a terminal, or it can allocate resources for semi-static transmission to the terminal.

[0053] Figure 2 is a schematic diagram of another communication system applicable to an embodiment of the present application. Vehicle-mounted terminals (vehicle-mounted terminal 131 and vehicle-mounted terminal 132) autonomously select transmission resources on the sidelink for data transmission. Alternatively, the vehicle-mounted terminals can select transmission resources randomly or through interception.

[0054] It should be noted that the IoV system uses direct end-to-end communication, resulting in higher spectrum efficiency and lower transmission latency. 3GPP defines two transmission modes: Mode 1 (sidelink resource allocation mode 1) and Mode 2 (sidelink resource allocation mode 2).

[0055] Mode 1: The terminal's transmission resources are allocated by the base station. The terminal transmits data on the sidelink based on the allocated resources. The base station can allocate resources for either single transmission or semi-static transmission. As shown in Figure 1, when the terminal is within network coverage, the network allocates transmission resources for sidelink transmission.

[0056] Mode 2: The terminal selects a resource from the resource pool for data transmission. As shown in Figure 2, when the terminal is outside the cell coverage area, the terminal autonomously selects a transmission resource from the pre-configured resource pool for sideline transmission; or the terminal autonomously selects a transmission resource from the network-configured resource pool for sideline transmission.

[0057] To facilitate understanding of the technical solutions of the embodiments of the present application, the following describes the terms related to the present application.

[0058] Proximity-based Services (ProSe): device-to-device communication, mainly for public safety services.

[0059] In ProSe, by configuring the position of the resource pool in the time domain, for example, the resource pool is discontinuous in the time domain, the terminal device can transmit / receive data discontinuously on the side link, thereby achieving power saving.

[0060] Vehicle-to-everything (V2X) systems are primarily designed for relatively high-speed vehicle-to-vehicle and vehicle-to-pedestrian communications. In V2X, power efficiency is less of a concern due to the continuous power supply provided by the onboard system, while data transmission latency is. Therefore, the system design requires continuous transmission and reception by terminal devices.

[0061] Wearable devices (FeD2D): correspond to scenarios where wearable devices access the network through mobile phones, and are mainly aimed at scenarios with low mobile speeds and low power access.

[0062] In FeD2D, the base station can configure the discontinuous reception (DRX) parameters of the remote terminal through a relay terminal.

[0063] Multi-carrier: In Long Term Evolution-Vehicle to Everything (LTE V2X), a multi-carrier mechanism was introduced. Specifically, the multi-carrier mechanism can support packet segmentation, transmitting packets using multiple carriers to improve data transmission rates; packet replication, duplicating the same packet twice and sending them using two carriers to improve transmission reliability; and multi-carrier reception enhancement at the receiving end. Specifically, regarding packet replication: V2X sidelink communication supports sidelink packet replication, which is performed 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 PDUs of the same PDCP entity are submitted to two different Radio Link Control (RLC) entities and associated with two different sidelink logical channels. The replicated PDCP PDUs of the same PDCP entity are 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. The ProSe Per-Packet Reliability (PPPR) value for supporting sidelink packet replication can be (pre-)configured via a PPPR threshold. For terminal device autonomous resource selection and scheduled resource allocation, 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 (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 (ID) included in the sideline BSR. A list of one or more PPPR values ​​can be reported by a Radio Resource Control (RRC) connected terminal device in the sideline terminal information.

[0064] New Radio-Vehicle to Everything (NR-V2X), based on LTE V2X, is not limited to broadcast scenarios, but further expanded to unicast and multicast scenarios.

[0065] 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). Furthermore, a user may be in a mixed mode, that is, they can use Mode 1 to acquire resources while also using Mode 2. The resource acquisition is indicated by a sidelink grant, that is, the sidelink grant indicates the time-frequency position of the corresponding Physical Sidelink Control Channel (PSCCH) and Physical Sidelink Shared Channel (PSSCH) resources.

[0066] Unlike LTE V2X, in addition to the feedback-free, terminal-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 latency is the main issue. Therefore, the system design requires terminal devices to perform continuous transmission and reception.

[0067] Similar to LTE V2X, in NR V2X, power efficiency is not a major issue because the on-board system has continuous power supply, but data transmission latency is the main issue. Therefore, the system design requires terminal devices to perform continuous transmission and reception.

[0068] In sidelink communications, the terminal triggers the sidelink Radio Resource Control (RRC) reconfiguration process in the following scenarios:

[0069] Release sidelink data bearer in unicast communication;

[0070] Establishing a sidelink data bearer in unicast communication;

[0071] Modify the relevant configuration of the sidelink data bearer in unicast communication;

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

[0073] In the terminal-to-network relay scenario, a PC5 relay RLC channel is established between the Layer 2 relay terminal and the remote terminal;

[0074] In a 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;

[0075] Reconfiguration of NR sidelink measurement reporting related parameters;

[0076] Reconfiguration of sidelink channel state information (CSI) reference signal resources and CSI reporting delay bounds;

[0077] Reconfigure the line link discontinuous reception (DRX) on the opposite terminal side.

[0078] To facilitate a better understanding of the embodiments of the present application, the terminal-to-network relay related to the present application is explained.

[0079] In the NR system, terminal-to-network relay is limited to the scenario where a remote terminal under the same base station switches between a sidelink relay link (i.e., a link where the remote terminal accesses the network through a relay terminal) and a Uu link (i.e., a link where the remote terminal directly accesses the network). In the NR evolution, mechanisms to enhance single-hop Layer-2 (L2) terminal-to-network (UE to Network, U2N) relay service continuity are specified for the following scenarios, with the following four new scenarios added:

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

[0081] Inter-gNB direct-to-direct path switching (e.g., remote terminal <-> gNB X to remote terminal <-> relay terminal A <-> gNB Y);

[0082] Intra-gNB indirect-to-indirect path switching (e.g., remote terminal <-> relay terminal A <-> gNB X) to remote terminal <-> relay terminal B <-> gNB X);

[0083] Inter-gNB indirect-to-indirect path switching (e.g., remote terminal <-> relay terminal A <-> gNB X) to remote terminal <-> relay terminal B <-> gNB Y).

[0084] In addition, measurement reporting events such as event X1, event X2, event Y1 and event Y2 are introduced for the remote terminal to switch between the side 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).

[0085] Event X1

[0086] 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.

[0087] Entry conditions for event X1: satisfy the following conditions X1-1 and X1-2;

[0088] Exit conditions for event X1: satisfying the following conditions X1-3 and / or X1-4.

[0089] Inequality X1-1 (entry condition X1-1): Mr+Hys<first threshold.

[0090] Inequality X1-2 (entry condition X1-2): Mn+Ofn+Ocn–Hys>second threshold.

[0091] Inequality X1-3 (leaving condition X1-3): Mr–Hys>first threshold.

[0092] Inequality X1-4 (exit condition X1-4): Mn+Ofn+Ocn+Hys<second threshold value.

[0093] The parameters in the above inequality have the following meanings:

[0094] Mr represents the measurement result of the serving relay terminal in L2 U2N, without considering any offset;

[0095] Mn represents the measurement result of the NR cell without considering any offset;

[0096] Ofn represents the specific offset of the NR cell frequency measurement object;

[0097] Ocn represents the cell-specific offset of the NR cell. If Ocn is not configured for the NR cell, Ocn is set to zero.

[0098] Hys represents the hysteresis parameter of event X1;

[0099] 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));

[0100] The second threshold represents a threshold for event X1 (eg, x1-second threshold, a threshold configured for event X1 in the NR measurement report configuration (reportConfigNR)).

[0101] The unit of Mr is decibel milliwatt (dBm).

[0102] When the measurement result is Reference Signal Received Power (RSRP), the unit of Mn is dBm.

[0103] When the measurement result is Reference Signal Received Quality (RSRQ) or Reference Signal to Interference plus Noise Ratio (RS-SINR), the unit of Mn is decibel (dB).

[0104] The units of Ofn, Ocn, and Hys are all dB.

[0105] The unit of the first threshold is the same as that of Mr.

[0106] The unit of the second threshold is the same as the unit of Mn.

[0107] Event X2

[0108] In event X2, the measurement result of the serving relay terminal in L2 U2N becomes worse than a threshold.

[0109] Entry conditions for event X2: satisfy the following condition X2-1;

[0110] Exit condition of event X2: The following condition X2-2 is met.

[0111] Inequality X2-1 (entry condition): Mr+Hys<threshold value.

[0112] Inequality X2-2 (leave condition): Mr–Hys>threshold.

[0113] The parameters in the above inequality have the following meanings:

[0114] Mr represents the measurement result of the serving relay terminal in L2 U2N, without considering any offset;

[0115] Hys represents the hysteresis parameter of event X2;

[0116] The threshold value indicates the threshold value for event X2 (eg, x2-threshold-relay, the threshold value configured for event X1 in the NR measurement report configuration (reportConfigNR)).

[0117] The unit of Mr is dBm.

[0118] The unit of Hys is dB.

[0119] The unit of the threshold is the same as that of Mr.

[0120] Event Y1

[0121] 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 the L2 U2N becomes better than a second threshold.

[0122] Entry conditions for event Y1: satisfying the following conditions Y1-1 and Y1-2;

[0123] Exit conditions for event Y1: satisfying the following conditions Y1-3 and / or Y1-4.

[0124] Inequality Y1-1 (entry condition Y1-1): Mp+Hys<first threshold.

[0125] Inequality Y1-2 (entry condition Y1-2): Mr–Hys>second threshold.

[0126] Inequality Y1-3 (Exit Condition Y1-3): Mp–Hys>first threshold.

[0127] Inequality Y1-4 (exit condition Y1-4): Mr+Hys<second threshold value.

[0128] The parameters in the above inequality have the following meanings:

[0129] Mr represents the measurement result of the candidate relay terminal in L2 U2N, without considering any offset;

[0130] Mp represents the measurement result of PCell without considering any offset;

[0131] Hys represents a hysteresis parameter for event Y1 (for example, a hysteresis parameter configured for event Y1 in the measurement report configuration outside the Radio Access Technology (RAT) (reportConfigInterRAT);

[0132] 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));

[0133] The second threshold value represents a threshold value for event Y1 (eg, y1-second threshold value-relay, a threshold value configured for event Y1 in the inter-RAT measurement report configuration (reportConfigInterRAT)).

[0134] When the measurement result is RSRP, the unit of Mp is dBm.

[0135] When the measurement result is RSRQ or Signal to Interference plus Noise Ratio (SINR), the unit of Mp is decibel (dB).

[0136] 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.

[0137] The unit of Hys is dB.

[0138] The unit of the first threshold is the same as that of Mp.

[0139] The unit of the second threshold is the same as that of Mr.

[0140] Event Y2

[0141] The measurement result of the candidate relay terminal in L2 U2N becomes better than the threshold.

[0142] Entry conditions for event Y2: satisfy the following condition Y2-1;

[0143] Exit condition of event Y2: satisfy the following condition Y2-2.

[0144] Inequality Y2-1 (entry condition Y2-1): Mr–Hys>second threshold.

[0145] Inequality Y2-2 (exit condition Y2-2): Mr+Hys<second threshold value.

[0146] Mr represents the measurement result of the candidate relay terminal in L2 U2N, without considering any offset;

[0147] Hys represents a hysteresis parameter for event Y2 (for example, a hysteresis parameter configured for event Y2 in the measurement report configuration outside the RAT (reportConfigInterRAT);

[0148] Threshold represents a threshold for event Y2 (eg, y2-threshold-relay, a threshold configured for event Y2 in the inter-RAT measurement report configuration (reportConfigInterRAT));

[0149] 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.

[0150] The unit of Hys is dB.

[0151] The unit of the threshold is the same as that of Mr.

[0152] 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, this application designs a new measurement event, so that the remote terminal can report the measurement results 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 results.

[0153] The technical solution of this application is described in detail below through specific embodiments.

[0154] FIG3 is a schematic flowchart of a wireless communication method 300 according to an embodiment of the present application. As shown in FIG3 , the wireless communication method 300 may include at least part of the following contents:

[0155] S310: The communication device sends first information; wherein the first information is used to configure at least one measurement event, where the at least one measurement event is a measurement event for switching between a first relay link and a second relay link, where both the first relay link and the second relay link are links through which a remote terminal accesses a network via a relay terminal;

[0156] S320: The remote terminal receives the first information.

[0157] 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.

[0158] 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.

[0159] In some embodiments, the first information may include entry conditions and / or exit conditions for the at least one measurement event. That is, the communications device configures the at least one measurement event by including the entry conditions and / or exit conditions for the at least one measurement event in the first information. In other words, the remote terminal can determine the at least one measurement event configured by the network device based on the obtained entry conditions and / or exit conditions for the at least one measurement event.

[0160] 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 exit condition is met.

[0161] 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 (RSRP), reference signal received quality (RSRQ), and signal to interference plus noise ratio (SINR).

[0162] In some embodiments, the switching between the first relay link and the second relay link is an indirect-to-indirect path switching, i.e., the remote terminal switches between indirect paths. In an indirect path, the remote terminal accesses the network through a relay terminal. A specific example is an intra-gNB indirect-to-indirect path switching (e.g., switching from remote terminal <-> relay terminal A <-> gNB X to remote terminal <-> relay terminal B <-> gNB X). Another specific example is an inter-gNB indirect-to-indirect path switching (e.g., switching from remote terminal <-> relay terminal A <-> gNB X to remote terminal <-> relay terminal B <-> gNB Y).

[0163] 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, if 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.

[0164] 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.

[0165] 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 (which may be 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 (which may be a newly designed field or a reused existing field).

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

[0167] 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 (which may be 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 (which may be a newly designed field or a reused existing field).

[0168] 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 MAC CE), PC5-RRC message.

[0169] 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 (which may be 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 (which may be a newly designed field or a reused existing field).

[0170] For example, when the first information is carried by SCI, the first information can be one or more information fields in SCI (can be newly designed information fields or reused existing information fields), or the first information can be one or more fields in an information field in SCI (can be newly designed fields or reused existing fields).

[0171] 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 (which may be 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 (which may be a newly designed field or a reused existing field).

[0172] 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 (which may be 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 (which may be a newly designed field or a reused existing field).

[0173] In some embodiments, the at least one measurement event comprises a first measurement event;

[0174] In this first measurement event, the link measurement value between the remote terminal and the serving relay terminal (Serving L2 U2N Relay UE) is greater than or equal to a 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 a second threshold value.

[0175] Specifically, in the first measurement event, the link measurement value between the remote terminal and the serving relay terminal is greater than or equal to a first threshold value, and / or the link measurement value between the serving relay terminal and the network device is greater than or equal to a second threshold value. In other words, if the access conditions of the first measurement event are met, the link measurement value between the remote terminal and the serving relay terminal is greater than or equal to the first threshold value, and / or the link measurement value between the serving relay terminal and the network device is greater than or equal to the second threshold value.

[0176] In some embodiments, the admission condition for the first measurement event is that a link measurement value between the remote terminal and the serving relay terminal is greater than or equal to the first threshold value, or the admission condition for the first measurement event is that a value obtained by subtracting a hysteresis value from the link measurement value between the remote terminal and the serving relay terminal is greater than or equal to the first threshold value; and / or,

[0177] 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.

[0178] In some embodiments, when the access conditions of the first measurement event are met, the remote terminal reports a first measurement result, wherein the first measurement result is used to determine whether to perform switching between the first relay link and the second relay link. Furthermore, the network device can determine 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 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 switching of the relay link to which the remote terminal belongs.

[0179] 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.

[0180] 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.

[0181] 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,

[0182] 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.

[0183] 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 network coverage and the remote terminal is in an RRC idle state or an 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 network coverage and the remote terminal is in an 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.

[0184] In some embodiments, the first threshold value and / or the second threshold value are configured by the serving relay terminal (Serving L2 U2N 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.

[0185] In some embodiments, the first measurement event is a measurement performed by the remote terminal according to a configured NR measurement object (measObjectNR), where the measurement object may be a current serving relay terminal.

[0186] In some embodiments, the at least one measurement event comprises a second measurement event;

[0187] In the second measurement event, a link measurement value between the remote terminal and the serving relay terminal (Serving L2 U2N Relay UE) is less than a third threshold, and / or a link measurement value between the serving relay terminal and the network device is less than a fourth threshold.

[0188] Specifically, in the second measurement event, the link measurement value between the remote terminal and the serving relay terminal is less than a third threshold, and / or the link measurement value between the serving relay terminal and the network device is less than a fourth threshold. In other words, if the access conditions for the second measurement event are met, the link measurement value between the remote terminal and the serving relay terminal is less than the third threshold, and / or the link measurement value between the serving relay terminal and the network device is less than the fourth threshold.

[0189] In some embodiments, the admission condition for the second measurement event is that a link measurement value between the remote terminal and the serving relay terminal is less than the third threshold value, or the admission condition for the second measurement event is that a value obtained by adding a hysteresis value to the link measurement value between the remote terminal and the serving relay terminal is less than the third threshold value; and / or,

[0190] 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.

[0191] In some embodiments, the admission condition for 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 for 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,

[0192] 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.

[0193] 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 network coverage and the remote terminal is in an RRC idle state or an 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 network coverage and the remote terminal is in an 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.

[0194] In some embodiments, the third threshold value and / or the fourth threshold value are configured by the serving relay terminal (Serving L2 U2N 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.

[0195] In some embodiments, the second measurement event is a measurement performed by the remote terminal according to a configured NR measurement object (measObjectNR), where the measurement object may be a current serving relay terminal.

[0196] In some embodiments, when the access conditions of the second measurement event are met, the remote terminal reports a second measurement result, wherein the second measurement result is used to determine whether to perform switching between the first relay link and the second relay link. Thus, 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 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 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 second measurement result reported by the remote terminal does not meet the switching condition, the network device determines not to perform switching of the relay link to which the remote terminal belongs.

[0197] 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.

[0198] 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.

[0199] In some embodiments, the at least one measurement event includes a third measurement event;

[0200] In this 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 L2 U2N Relay UE) and the network device is greater than or equal to the sixth threshold value.

[0201] 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, and / or the link measurement value between the candidate relay terminal and the network device is greater than or equal to the sixth threshold. In other words, if the access conditions for the third measurement event are met, the link measurement value between the remote terminal and the candidate relay terminal is greater than or equal to the fifth threshold, and / or the link measurement value between the candidate relay terminal and the network device is greater than or equal to the sixth threshold.

[0202] 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,

[0203] 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 hysteresis value to the link measurement value between the remote terminal and the candidate relay terminal is less than the fifth threshold value.

[0204] In some embodiments, the admission 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 admission 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,

[0205] 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.

[0206] 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 network coverage and the remote terminal is in an RRC idle state or an 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 network coverage and the remote terminal is in an 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.

[0207] In some embodiments, the fifth threshold value and / or the sixth threshold value are configured by the serving relay terminal (Serving L2 U2N 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.

[0208] In some embodiments, the third measurement event is a measurement performed by the remote terminal according to the configured NR measurement object (measObjectNR), where the measurement object can be the current serving relay terminal and the candidate relay terminal.

[0209] In some embodiments, when the access conditions of the third measurement event are met, the remote terminal reports a third measurement result, wherein the third measurement result is used to determine whether to perform switching between the first relay link and the second relay link. Further, 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 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 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 third measurement result reported by the remote terminal does not meet the switching condition, the network device determines not to perform switching of the relay link to which the remote terminal belongs.

[0210] 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, and SINR.

[0211] 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.

[0212] In some embodiments, the at least one measurement event includes a fourth measurement event;

[0213] In this 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.

[0214] Specifically, in the fourth measurement event, the sidelink measurement value measured for the candidate relay terminal is higher than the sidelink 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, if the access conditions of the fourth measurement event are met, the sidelink measurement value measured for the candidate relay terminal is higher than the sidelink 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.

[0215] 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 a preset offset value to the side link measurement value measured for the candidate relay terminal and subtracting a 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,

[0216] 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 less 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 less 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.

[0217] 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 and an offset value corresponding to the current measurement object to the link measurement value between the serving relay terminal and the network device, or the entry condition of the fourth measurement event is that the value obtained by adding a preset offset value and subtracting a hysteresis 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 and an offset value corresponding to the current measurement object to the link measurement value between the serving relay terminal and the network device; and / or

[0218] 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 less 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 less 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.

[0219] In some embodiments, the fourth measurement event is a measurement performed by the remote terminal according to the configured NR measurement object (measObjectNR), where the measurement object can be the current serving relay terminal and the candidate relay terminal.

[0220] 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 switching between the first relay link and the second relay link. Further, 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 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 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 fourth measurement result reported by the remote terminal does not meet the switching condition, the network device determines not to perform switching of the relay link to which the remote terminal belongs.

[0221] 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, and SINR.

[0222] 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.

[0223] In some embodiments, the at least one measurement event includes a fifth measurement event;

[0224] In which, in the fifth measurement event, the link measurement value between the remote terminal and the serving relay terminal (Serving L2 U2N Relay UE) is less than the seventh threshold value and 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 eighth threshold value, and / or, the link measurement value between the serving relay terminal (Serving L2 U2N Relay UE) and the network device is less than the ninth threshold value and the link measurement value between the candidate relay terminal (Candidate L2 U2N Relay UE) and the network device is greater than or equal to the tenth threshold value.

[0225] Specifically, in the fifth measurement event, the link measurement value between the remote terminal and the serving 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 serving 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, if the admission conditions of the fifth measurement event are met, the link measurement value between the remote terminal and the serving 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 serving 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.

[0226] In some embodiments, the admission condition of the fifth measurement event is that the link measurement value between the remote terminal and the serving 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 serving 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 and subtracting the hysteresis 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; and / or,

[0227] 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.

[0228] 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,

[0229] 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.

[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 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 network coverage and the remote terminal is in an RRC idle state or an 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 network coverage and the remote terminal is in an 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.

[0231] 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 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.

[0232] In some embodiments, the fifth measurement event is a measurement performed by the remote terminal according to the configured NR measurement object (measObjectNR), where the measurement object can be the current serving relay terminal and the candidate relay terminal.

[0233] 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 switching between the first relay link and the second relay link. Further, 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 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 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 fifth measurement result reported by the remote terminal does not meet the switching condition, the network device determines not to perform switching of the relay link to which the remote terminal belongs.

[0234] 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, and SINR.

[0235] 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.

[0236] In some embodiments, the preset offset value is configured according to at least one of the following granularities:

[0237] Cell granularity, remote terminal granularity, relay terminal granularity, and service priority granularity.

[0238] 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.

[0239] 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.

[0240] 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.

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

[0242] In some embodiments, the preset offset value may be the same or different in different measurement events.

[0243] 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.

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

[0245] 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.

[0246] For another example, the preset offset value may be configured according to the granularity of the service priority, that is, different preset offset values ​​may be configured for different service priorities.

[0247] In some embodiments, the remote terminal may obtain the link measurement value between the serving relay terminal and the network device through at least one of the following signaling sent by the serving relay terminal:

[0248] Discovery message, SCI, SL MAC CE, PC5-RRC message.

[0249] 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:

[0250] Discovery message, SCI, SL MAC CE, PC5-RRC message.

[0251] 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.

[0252] 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.

[0253] 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.

[0254] In some embodiments, the hysteresis value may also be referred to as a hysteresis parameter.

[0255] In some embodiments, the hysteresis value may be the same or different in different measurement events.

[0256] 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.

[0257] In some embodiments, the serving relay terminal configures the preset offset value through a discovery message, or the serving relay terminal configures the preset offset value through a PC5-RRC message, or the serving relay terminal configures the preset offset value through a forwarded system broadcast message.

[0258] 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.

[0259] 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 results 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 results.

[0260] The above text, in conjunction with Figure 3, describes in detail the method embodiment of the present application. The following text, in conjunction with Figures 4 to 8, describes in detail the device embodiment of the present application. It should be understood that the device embodiment and the method embodiment correspond to each other, and similar descriptions can refer to the method embodiment.

[0261] FIG4 shows a schematic block diagram of a remote terminal 400 according to an embodiment of the present application. As shown in FIG4 , the remote terminal 400 includes:

[0262] A first communication unit 410 is configured to receive first information;

[0263] The first information is used to configure at least one measurement event, which is a measurement event for switching between a first relay link and a second relay link. Both the first relay link and the second relay link are links for a remote terminal to access a network through a relay terminal.

[0264] In some embodiments, the at least one measurement event comprises a first measurement event;

[0265] 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.

[0266] In some embodiments, the admission condition for the first measurement event is that a link measurement value between the remote terminal and the serving relay terminal is greater than or equal to the first threshold value, or the admission condition for the first measurement event is that a value obtained by subtracting a hysteresis value from the link measurement value between the remote terminal and the serving relay terminal is greater than or equal to the first threshold value; and / or,

[0267] 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.

[0268] 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,

[0269] 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.

[0270] In some embodiments, the remote terminal 400 further includes: a second communication unit 420;

[0271] When the access 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,

[0272] When the exit condition of the first measurement event is met, the remote terminal does not report the measurement result.

[0273] In some embodiments, the at least one measurement event comprises a second measurement event;

[0274] In the second measurement event, the link measurement value between the remote terminal and the serving relay terminal is less than a third threshold value, and / or the link measurement value between the serving relay terminal and the network device is less than a fourth threshold value.

[0275] In some embodiments, the admission condition for the second measurement event is that a link measurement value between the remote terminal and the serving relay terminal is less than the third threshold value, or the admission condition for the second measurement event is that a value obtained by adding a hysteresis value to the link measurement value between the remote terminal and the serving relay terminal is less than the third threshold value; and / or,

[0276] 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.

[0277] In some embodiments, the admission condition for 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 for 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,

[0278] 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.

[0279] In some embodiments, the remote terminal 400 further includes: a second communication unit 420;

[0280] 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,

[0281] When the exit condition of the second measurement event is met, the remote terminal does not report the measurement result.

[0282] In some embodiments, the at least one measurement event includes a third measurement event;

[0283] 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, and / or the link measurement value between the candidate relay terminal and the network device is greater than or equal to a sixth threshold.

[0284] 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,

[0285] 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 hysteresis value to the link measurement value between the remote terminal and the candidate relay terminal is less than the fifth threshold value.

[0286] In some embodiments, the admission 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 admission 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,

[0287] 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.

[0288] In some embodiments, the remote terminal 400 further includes: a second communication unit 420;

[0289] If 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,

[0290] When the exit condition of the third measurement event is met, the remote terminal does not report the measurement result.

[0291] In some embodiments, the at least one measurement event includes a fourth measurement event;

[0292] In this 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.

[0293] 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 a preset offset value to the side link measurement value measured for the candidate relay terminal and subtracting a 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,

[0294] 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 less 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 less 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.

[0295] 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 and an offset value corresponding to the current measurement object to the link measurement value between the serving relay terminal and the network device, or the entry condition of the fourth measurement event is that the value obtained by adding a preset offset value and subtracting a hysteresis 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 and an offset value corresponding to the current measurement object to the link measurement value between the serving relay terminal and the network device; and / or

[0296] 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 less 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 less 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.

[0297] In some embodiments, the remote terminal 400 further includes: a second communication unit 420;

[0298] 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,

[0299] When the exit condition of the fourth measurement event is met, the remote terminal does not report the measurement result.

[0300] In some embodiments, the at least one measurement event includes a fifth measurement event;

[0301] In which, in the fifth measurement event, the link measurement value between the remote terminal and the serving 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 serving 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.

[0302] In some embodiments, the admission condition of the fifth measurement event is that the link measurement value between the remote terminal and the serving 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 serving 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 and subtracting the hysteresis 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; and / or,

[0303] 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.

[0304] 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 and subtracting the hysteresis value to the link measurement value between the candidate relay terminal and the network device is greater than or equal to the tenth threshold value; and / or,

[0305] 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.

[0306] In some embodiments, the remote terminal 400 further includes: a second communication unit 420;

[0307] If 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,

[0308] When the exit condition of the fifth measurement event is met, the remote terminal does not report the measurement result.

[0309] In some embodiments, the preset offset value is configured according to at least one of the following granularities:

[0310] Cell granularity, remote terminal granularity, relay terminal granularity, and service priority granularity.

[0311] In some embodiments, the remote terminal obtains the link measurement value between the serving relay terminal and the network device through at least one of the following signaling sent by the serving relay terminal:

[0312] Discovery message, sidelink control information SCI, sidelink media access control layer control element SL MAC CE, PC5-radio resource control RRC message.

[0313] 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:

[0314] Discovery message, SCI, SL MAC CE, PC5-RRC message.

[0315] 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 a service relay terminal, or the remote terminal obtains the hysteresis value through a system broadcast message forwarded by a service relay terminal.

[0316] 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 a service relay terminal, or the remote terminal obtains the preset offset value through a system broadcast message forwarded by a service relay terminal.

[0317] 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.

[0318] 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 embodiment of the method of the present application, and the above-mentioned and other operations and / or functions of each unit in the remote terminal 400 are respectively for realizing the corresponding processes of the remote terminal in the method 300 shown in Figure 3. For the sake of brevity, they will not be repeated here.

[0319] FIG5 shows a schematic block diagram of a communication device 500 according to an embodiment of the present application. As shown in FIG5 , the communication device 500 includes:

[0320] A first communication unit 510 is configured to send first information;

[0321] The first information is used to configure at least one measurement event, which is a measurement event for switching between a first relay link and a second relay link. Both the first relay link and the second relay link are links for a remote terminal to access a network through a relay terminal.

[0322] In some embodiments, the at least one measurement event comprises a first measurement event;

[0323] 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.

[0324] In some embodiments, the admission condition for the first measurement event is that a link measurement value between the remote terminal and the serving relay terminal is greater than or equal to the first threshold value, or the admission condition for the first measurement event is that a value obtained by subtracting a hysteresis value from the link measurement value between the remote terminal and the serving relay terminal is greater than or equal to the first threshold value; and / or,

[0325] 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.

[0326] 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,

[0327] 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.

[0328] In some embodiments, the communication device further includes a second communication unit 520;

[0329] The second communication unit 520 is configured to receive the first measurement result;

[0330] 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.

[0331] In some embodiments, the at least one measurement event comprises a second measurement event;

[0332] In the second measurement event, the link measurement value between the remote terminal and the serving relay terminal is less than a third threshold value, and / or the link measurement value between the serving relay terminal and the network device is less than a fourth threshold value.

[0333] In some embodiments, the admission condition for the second measurement event is that a link measurement value between the remote terminal and the serving relay terminal is less than the third threshold value, or the admission condition for the second measurement event is that a value obtained by adding a hysteresis value to the link measurement value between the remote terminal and the serving relay terminal is less than the third threshold value; and / or,

[0334] 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.

[0335] In some embodiments, the admission condition for 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 for 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,

[0336] 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.

[0337] In some embodiments, the communication device further includes a second communication unit 520;

[0338] The second communication unit 520 is configured to receive a second measurement result;

[0339] 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.

[0340] In some embodiments, the at least one measurement event includes a third measurement event;

[0341] 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, and / or the link measurement value between the candidate relay terminal and the network device is greater than or equal to a sixth threshold.

[0342] 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,

[0343] 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 hysteresis value to the link measurement value between the remote terminal and the candidate relay terminal is less than the fifth threshold value.

[0344] In some embodiments, the admission 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 admission 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,

[0345] 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.

[0346] In some embodiments, the communication device further includes a second communication unit 520;

[0347] The second communication unit 520 is configured to receive a third measurement result;

[0348] 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 switching between the first relay link and the second relay link.

[0349] In some embodiments, the at least one measurement event includes a fourth measurement event;

[0350] In this 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.

[0351] 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 a preset offset value to the side link measurement value measured for the candidate relay terminal and subtracting a 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,

[0352] 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 less 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 less 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.

[0353] 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 and an offset value corresponding to the current measurement object to the link measurement value between the serving relay terminal and the network device, or the entry condition of the fourth measurement event is that the value obtained by adding a preset offset value and subtracting a hysteresis 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 and an offset value corresponding to the current measurement object to the link measurement value between the serving relay terminal and the network device; and / or

[0354] 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 less 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 less 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.

[0355] In some embodiments, the communication device further includes a second communication unit 520;

[0356] The second communication unit 520 is configured to receive a fourth measurement result;

[0357] 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.

[0358] In some embodiments, the at least one measurement event includes a fifth measurement event;

[0359] In which, in the fifth measurement event, the link measurement value between the remote terminal and the serving 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 serving 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.

[0360] In some embodiments, the admission condition of the fifth measurement event is that the link measurement value between the remote terminal and the serving 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 serving 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 and subtracting the hysteresis 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; and / or,

[0361] 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.

[0362] 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 and subtracting the hysteresis value to the link measurement value between the candidate relay terminal and the network device is greater than or equal to the tenth threshold value; and / or,

[0363] 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.

[0364] In some embodiments, the communication device further includes a second communication unit 520;

[0365] The second communication unit 520 is configured to receive a fifth measurement result;

[0366] 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.

[0367] In some embodiments, the preset offset value is configured according to at least one of the following granularities:

[0368] Cell granularity, remote terminal granularity, relay terminal granularity, and service priority granularity.

[0369] In some embodiments, when the communication device is a serving relay terminal, the serving relay terminal carries the link measurement value between the serving relay terminal and the network device through at least one of the following signaling:

[0370] Discovery message, sidelink control information SCI, sidelink media access control layer control element SL MAC CE, PC5-radio resource control RRC message.

[0371] 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,

[0372] 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.

[0373] 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,

[0374] 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.

[0375] In some embodiments, the communication device is a network device or a service relay terminal.

[0376] 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.

[0377] 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 embodiment of the method of the present application, and the above-mentioned and other operations and / or functions of each unit in the communication device 500 are respectively for implementing the corresponding processes of the communication device in the method 300 shown in Figure 3. For the sake of brevity, they will not be repeated here.

[0378] Figure 6 is a schematic structural diagram of a communication device 600 provided in an embodiment of the present application. The communication device 600 shown in Figure 6 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.

[0379] In some embodiments, as shown in FIG6 , the communication device 600 may further include a memory 620. The processor 610 may call and execute a computer program from the memory 620 to implement the method in the embodiment of the present application.

[0380] The memory 620 may be a separate device independent of the processor 610 , or may be integrated into the processor 610 .

[0381] In some embodiments, as shown in FIG6 , 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, to send information or data to other devices, or to receive information or data sent by other devices.

[0382] The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include an antenna, and the number of antennas may be one or more.

[0383] 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.

[0384] 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.

[0385] 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.

[0386] 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. For the sake of brevity, they will not be repeated here.

[0387] 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. For the sake of brevity, they will not be repeated here.

[0388] Figure 7 is a schematic structural diagram of an apparatus according to an embodiment of the present application. The apparatus 700 shown in Figure 7 includes a processor 710, which can call and execute a computer program from a memory to implement the method according to the embodiment of the present application.

[0389] In some embodiments, as shown in FIG7 , the apparatus 700 may further include a memory 720. The processor 710 may call and execute a computer program from the memory 720 to implement the method in the embodiment of the present application.

[0390] The memory 720 may be a separate device independent of the processor 710 , or may be integrated into the processor 710 .

[0391] 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.

[0392] 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.

[0393] 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.

[0394] 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, specifically, to output information or data to other devices or chips. Optionally, the processor 710 may be located inside or outside the chip.

[0395] 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.

[0396] 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.

[0397] In some embodiments, the apparatus can be applied to the communication equipment in the embodiments of the present application, and the apparatus can implement the corresponding processes implemented by the communication equipment in the various methods in the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0398] In some embodiments, the device mentioned in the embodiments of the present application may also be a chip, such as a system-on-chip, a system-on-chip, a chip system, or a system-on-chip chip.

[0399] FIG8 is a schematic block diagram of a communication system 800 provided in an embodiment of the present application. As shown in FIG8 , the communication system 800 includes a remote terminal 810 , a relay terminal 820 , and a network device 830 .

[0400] 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 820 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.

[0401] It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment can be completed by hardware integrated logic circuits in the processor or software instructions. The above processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. 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.

[0402] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may 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 may 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.

[0403] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present application may also be 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 RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0404] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0405] 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.

[0406] 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.

[0407] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0408] 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 will not be repeated here.

[0409] 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.

[0410] The embodiment of the present application also provides a computer program.

[0411] 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.

[0412] 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.

[0413] Those skilled 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 beyond the scope of this application.

[0414] Those skilled in the art will 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.

[0415] In the several embodiments provided in this 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 merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, 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.

[0416] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0417] 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.

[0418] 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 this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute 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.

[0419] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection 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. The first relay link and the second relay link are both links for a remote terminal to access a network through a relay terminal.

2. The method according to claim 1, wherein The at least one measurement event comprises a first measurement event; 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.

3. The method according to claim 2, wherein The entry condition for the first measurement event is that a link measurement value between the remote terminal and the serving relay terminal is greater than or equal to the first threshold value, or the entry condition for the first measurement event is that a value obtained by subtracting a hysteresis value from the link measurement value between the remote terminal and the serving relay terminal is greater than or equal to the first threshold value; and / or, 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.

4. The method according to claim 2, wherein The entry condition for the first measurement event is that a link measurement value between the serving relay terminal and the network device is greater than or equal to the second threshold value, or the entry condition for the first measurement event is that a value obtained by subtracting a hysteresis value from the link measurement value between the serving relay terminal and the network device is greater than or equal to the second threshold value; and / or, 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.

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

6. The method according to claim 1, wherein The at least one measurement event includes a second measurement event; 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.

7. The method according to claim 6, wherein The entry condition for the second measurement event is that a link measurement value between the remote terminal and the serving relay terminal is less than the third threshold value, or the entry condition for the second measurement event is that a value obtained by adding a hysteresis value to the link measurement value between the remote terminal and the serving relay terminal is less than the third threshold value; and / or, 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.

8. The method according to claim 6, wherein The entry condition for the second measurement event is that a link measurement value between the serving relay terminal and the network device is less than the fourth threshold value, or the entry condition for the second measurement event is that a value obtained by adding a hysteresis value to the link measurement value between the serving relay terminal and the network device is less than the fourth threshold value; and / or, 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.

9. The method according to claim 7 or 8, wherein The method further comprises: If an admission condition of the second measurement event is met, the remote terminal reports a second measurement result, where the second measurement result is used to determine whether to perform a handover between the first relay link and the second relay link; and / or, When the exit condition of the second measurement event is met, the remote terminal does not report the measurement result.

10. The method according to claim 1, wherein The at least one measurement event includes a third measurement event; 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, and / or the link measurement value between the candidate relay terminal and the network device is greater than or equal to a sixth threshold.

11. The method according to claim 10, wherein An entry condition for the third measurement event is that a value obtained by adding a preset offset value to a link measurement value between the remote terminal and the candidate relay terminal is greater than or equal to the fifth threshold value, or an entry condition for the third measurement event is that a value obtained by adding a preset offset value to a 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, 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 hysteresis value to the link measurement value between the remote terminal and the candidate relay terminal is less than the fifth threshold value.

12. The method according to claim 10, wherein An entry condition for the third measurement event is that a link measurement value between the candidate relay terminal and the network device is greater than or equal to the sixth threshold value, or an entry condition for the third measurement event is that a value obtained by subtracting a 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, 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.

13. The method according to claim 11 or 12, wherein: The method further comprises: If an admission condition of the third measurement event is met, the remote terminal reports a third measurement result, where the third measurement result is used to determine whether to perform a handover between the first relay link and the second relay link; and / or, When the exit condition of the third measurement event is met, the remote terminal does not report the measurement result.

14. The method according to claim 1, wherein The at least one measurement event includes a fourth measurement event; 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.

15. The method according to claim 14, wherein The entry condition of the fourth measurement event is that a value obtained by adding a preset offset value to the sidelink measurement value measured for the candidate relay terminal is greater than or equal to a value obtained by adding the preset offset value and the offset value corresponding to the current measurement object to the sidelink measurement value measured for the serving relay terminal, or the entry condition of the fourth measurement event is that a value obtained by adding a preset offset value to the sidelink measurement value measured for the candidate relay terminal and subtracting a hysteresis value is greater than or equal to a value obtained by adding the preset offset value and the offset value corresponding to the current measurement object to the sidelink measurement value measured for the serving relay terminal; and / or, 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 less 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 serving 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 less 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 serving relay terminal.

16. The method according to claim 14, wherein The entry condition of the fourth measurement event is that a value obtained by adding a preset offset value to a link measurement value between the candidate relay terminal and the network device is greater than or equal to a value obtained by adding a preset offset value and an offset value corresponding to a current measurement object to a link measurement value between the serving relay terminal and the network device; or, the entry condition of the fourth measurement event is that a value obtained by adding a preset offset value and subtracting a hysteresis value to a link measurement value between the candidate relay terminal and the network device is greater than or equal to a value obtained by adding a preset offset value and an offset value corresponding to a current measurement object to a link measurement value between the serving relay terminal and the network device; and / or, 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 less 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 serving 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 less 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 serving relay terminal and the network device.

17. The method according to claim 15 or 16, wherein: The method further comprises: If an admission condition of the fourth measurement event is met, the remote terminal reports a fourth measurement result, where the fourth measurement result is used to determine whether to perform a handover between the first relay link and the second relay link; and / or, When the exit condition of the fourth measurement event is met, the remote terminal does not report the measurement result.

18. The method according to claim 1, wherein The at least one measurement event includes a fifth measurement event; In which, in the fifth measurement event, the link measurement value between the remote terminal and the serving 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 serving 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.

19. The method according to claim 18, wherein The admission condition for the fifth measurement event is that the link measurement value between the remote terminal and the serving relay terminal is less than the seventh threshold value; or, the admission condition for the fifth measurement event is that a value obtained by adding a 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 admission condition for the fifth measurement event is that a 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 eighth threshold value; or, the admission condition for the fifth measurement event is that a value obtained by adding a 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, The exit condition of the fifth measurement event is that the link measurement value between the remote terminal and the serving 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 serving 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.

20. The method of claim 18, wherein: The entry condition for the fifth measurement event is that a value obtained by adding a hysteresis value to a link measurement value between the serving relay terminal and the network device is less than the ninth threshold value, or the entry condition for the fifth measurement event is that a value obtained by adding a preset offset value to a 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, 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 serving 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.

21. The method according to claim 19 or 20, wherein: 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 handover 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.

22. The method of claim 11, 14, 15, 16, 17, 19, 20 or 21, wherein: 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.

23. The method according to any one of claims 2 to 9 and 14 to 21, characterized in that The remote terminal obtains the link measurement value between the serving relay terminal and the network device through at least one of the following signalings sent by the serving relay terminal: Discovery message, sidelink control information SCI, sidelink media access control layer control unit SL MAC CE, PC5-radio resource control RRC message.

24. The method according to any one of claims 10 to 21, 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.

25. The method of claim 3, 4, 5, 7, 8, 9, 11, 12, 13, 15, 16, 17, 19, 20 or 21, wherein 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 a service relay terminal, or the remote terminal obtains the hysteresis value through a system broadcast message forwarded by a service relay terminal.

26. The method of claim 11, 14, 15, 16, 17, 19, 20, 21 or 22, wherein: 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 a service relay terminal, or the remote terminal obtains the preset offset value through a system broadcast message forwarded by a service relay terminal.

27. A wireless communication method, characterized in that: include: The communication device sends 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. The first relay link and the second relay link are both links for a remote terminal to access a network through a relay terminal.

28. The method of claim 27, wherein: The at least one measurement event comprises a first measurement event; 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.

29. The method of claim 28, wherein The entry condition for the first measurement event is that a link measurement value between the remote terminal and the serving relay terminal is greater than or equal to the first threshold value, or the entry condition for the first measurement event is that a value obtained by subtracting a hysteresis value from the link measurement value between the remote terminal and the serving relay terminal is greater than or equal to the first threshold value; and / or, 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.

30. The method of claim 28, wherein The entry condition for the first measurement event is that a link measurement value between the serving relay terminal and the network device is greater than or equal to the second threshold value, or the entry condition for the first measurement event is that a value obtained by subtracting a hysteresis value from the link measurement value between the serving relay terminal and the network device is greater than or equal to the second threshold value; and / or, 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.

31. The method according to claim 29 or 30, wherein The method further comprises: The communication device receives a first measurement result; 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.

32. The method of claim 27, wherein: The at least one measurement event includes a second measurement event; 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.

33. The method of claim 32, wherein: The entry condition for the second measurement event is that a link measurement value between the remote terminal and the serving relay terminal is less than the third threshold value, or the entry condition for the second measurement event is that a value obtained by adding a hysteresis value to the link measurement value between the remote terminal and the serving relay terminal is less than the third threshold value; and / or, 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.

34. The method of claim 32, wherein: The entry condition for the second measurement event is that a link measurement value between the serving relay terminal and the network device is less than the fourth threshold value, or the entry condition for the second measurement event is that a value obtained by adding a hysteresis value to the link measurement value between the serving relay terminal and the network device is less than the fourth threshold value; and / or, 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.

35. The method according to claim 33 or 34, wherein The method further comprises: The communication device receives a second measurement result; 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.

36. The method of claim 27, wherein: The at least one measurement event includes a third measurement event; 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, and / or the link measurement value between the candidate relay terminal and the network device is greater than or equal to a sixth threshold.

37. The method of claim 36, wherein: An entry condition for the third measurement event is that a value obtained by adding a preset offset value to a link measurement value between the remote terminal and the candidate relay terminal is greater than or equal to the fifth threshold value, or an entry condition for the third measurement event is that a value obtained by adding a preset offset value to a 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, 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 hysteresis value to the link measurement value between the remote terminal and the candidate relay terminal is less than the fifth threshold value.

38. The method of claim 36, wherein: An entry condition for the third measurement event is that a link measurement value between the candidate relay terminal and the network device is greater than or equal to the sixth threshold value, or an entry condition for the third measurement event is that a value obtained by subtracting a 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, 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.

39. The method according to claim 37 or 38, wherein The method further comprises: The communication device receives a third measurement result; 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 switching between the first relay link and the second relay link.

40. The method of claim 27, wherein The at least one measurement event includes a fourth measurement event; 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.

41. The method of claim 40, wherein: The entry condition of the fourth measurement event is that a value obtained by adding a preset offset value to the sidelink measurement value measured for the candidate relay terminal is greater than or equal to a value obtained by adding the preset offset value and the offset value corresponding to the current measurement object to the sidelink measurement value measured for the serving relay terminal, or the entry condition of the fourth measurement event is that a value obtained by adding a preset offset value to the sidelink measurement value measured for the candidate relay terminal and subtracting a hysteresis value is greater than or equal to a value obtained by adding the preset offset value and the offset value corresponding to the current measurement object to the sidelink measurement value measured for the serving relay terminal; and / or, 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 less 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 serving 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 less 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 serving relay terminal.

42. The method of claim 40, wherein: The entry condition of the fourth measurement event is that a value obtained by adding a preset offset value to a link measurement value between the candidate relay terminal and the network device is greater than or equal to a value obtained by adding a preset offset value and an offset value corresponding to a current measurement object to a link measurement value between the serving relay terminal and the network device; or, the entry condition of the fourth measurement event is that a value obtained by adding a preset offset value and subtracting a hysteresis value to a link measurement value between the candidate relay terminal and the network device is greater than or equal to a value obtained by adding a preset offset value and an offset value corresponding to a current measurement object to a link measurement value between the serving relay terminal and the network device; and / or, 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 less 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 serving 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 less 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 serving relay terminal and the network device.

43. The method according to claim 41 or 42, wherein The method further comprises: The communication device receives a fourth measurement result; 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.

44. The method of claim 27, wherein: The at least one measurement event includes a fifth measurement event; In which, in the fifth measurement event, the link measurement value between the remote terminal and the serving 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 serving 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.

45. The method of claim 44, wherein: The admission condition for the fifth measurement event is that the link measurement value between the remote terminal and the serving relay terminal is less than the seventh threshold value; or, the admission condition for the fifth measurement event is that a value obtained by adding a 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 admission condition for the fifth measurement event is that a 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 eighth threshold value; or, the admission condition for the fifth measurement event is that a value obtained by adding a 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, The exit condition of the fifth measurement event is that the link measurement value between the remote terminal and the serving 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 serving 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.

46. ​​The method of claim 44, wherein: The entry condition for the fifth measurement event is that a value obtained by adding a hysteresis value to a link measurement value between the serving relay terminal and the network device is less than the ninth threshold value, or the entry condition for the fifth measurement event is that a value obtained by adding a preset offset value to a 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, 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 serving 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.

47. The method according to claim 45 or 46, wherein 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.

48. The method of claim 37, 40, 41, 42, 43, 45, 46 or 47, wherein 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.

49. The method according to any one of claims 28 to 35 and 40 to 47, wherein In a case where the communication device is a serving relay terminal, the serving relay terminal carries the link measurement value between the serving relay terminal and the network device through at least one of the following signalings: Discovery message, sidelink control information SCI, sidelink media access control layer control element SL MAC CE, PC5-radio resource control RRC message.

50. The method of claim 29, 30, 31, 33, 34, 35, 37, 38, 39, 41, 42, 43, 45, 46 or 47, wherein In the case where 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, 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.

51. The method of claim 37, 40, 41, 42, 43, 45, 46, 47 or 48, wherein: In a case where 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, 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.

52. The method according to any one of claims 27 to 51, wherein The communication device is a network device or a service relay terminal.

53. 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. The first relay link and the second relay link are both links for a remote terminal to access a network through a relay terminal.

54. 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. The first relay link and the second relay link are both links for a remote terminal to access a network through a relay terminal.

55. 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 according to any one of claims 1 to 26.

56. 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 27 to 52.

57. 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 the method according to any one of claims 1 to 26.

58. A chip, characterized in that: include: A processor, configured to call and execute a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 27 to 52.

59. A computer-readable storage medium, characterized in that For storing a computer program, when the computer program is executed, the method according to any one of claims 1 to 26 is implemented.

60. A computer-readable storage medium, characterized in that For storing a computer program, when said computer program is executed, the method according to any one of claims 27 to 52 is implemented.

61. A computer program product, characterized in that The method comprises computer program instructions, which, when executed, implement the method according to any one of claims 1 to 26.

62. A computer program product, characterized in that The method comprises computer program instructions which, when executed, implement the method according to any one of claims 27 to 52.

63. A computer program, characterized in that When the computer program is executed, the method according to any one of claims 1 to 26 is implemented.

64. A computer program, characterized in that When the computer program is executed, the method according to any one of claims 27 to 52 is implemented.

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