CN119545420A

CN119545420A - Side link SL measurement reporting, configuration method, terminal, device and medium

Info

Publication number: CN119545420A
Application number: CN202311105534.6A
Authority: CN
Inventors: 郑倩
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2023-08-29
Filing date: 2023-08-29
Publication date: 2025-02-28

Abstract

The application discloses a side link SL measurement reporting and configuring method, a terminal, equipment and a medium, belonging to the communication field; the terminal sends a first message to first network equipment, wherein the first message comprises first information or a first indication, the first indication is used for indicating that the first information exists in the terminal, and the first information comprises at least one of a valid SL measurement result and information of a valid candidate relay equipment. According to the embodiment of the application, the delay of relay link establishment is shortened by optimizing the SL measurement behavior related to the UE.

Description

Side link SL measurement reporting and configuration method, terminal, equipment and medium

Technical Field

The application belongs to the technical field of communication, and particularly relates to a side chain SL measurement reporting and configuration method, a terminal, equipment and a medium.

Background

Relay (Relay) technology in a wireless communication system is to add one or more Relay nodes (e.g., relay UEs) between a base station and a terminal (e.g., remote UE or Primary UE), and is responsible for forwarding a wireless signal one or more times. Wherein, uu interface is between the relay node and the base station, and SL (Sidelink, side link or side link) interface (e.g. PC5 interface) is between the relay node and the terminal.

The related art SL relay architecture includes a Multiple path (Multiple path) scenario, which means that the Remote UE establishes both a non-direct path (INDIRECT PATH) and a direct path (DIRECT PATH). The non-direct connection path refers to a wireless link established between the Remote UE (or Primary UE) and the base station through a Uu air interface of the Relay UE (or Secondary UE), and the direct connection path refers to a wireless link established between the Remote UE (or Primary UE) and the base station through a Uu air interface of the Remote UE (or Secondary UE).

In the related art, in the process of establishing a relay link in a multipath scenario, a terminal (Remote UE) starts to perform SL relay measurement configuration, measurement and reporting in a radio resource control CONNECTED state (rrc_connected), which results in a larger delay of discovery of a potential relay device and thus a longer delay of establishment of the relay link.

Disclosure of Invention

The embodiment of the application provides a SL measurement reporting and configuring method, a terminal, equipment and a medium, which can solve the problem of long establishment time delay of a relay link.

In a first aspect, a method for reporting measurement of a side link SL is provided, where the method includes:

the terminal performs SL measurement in a non-connection state;

the terminal sends a first message to first network equipment;

The first message comprises first information or a first indication, wherein the first indication is used for indicating that the first information exists in the terminal, and the first information comprises at least one of the following:

effective SL measurements;

Information of valid candidate relay devices.

In a second aspect, a method for reporting measurement of a side link SL is provided, where the method includes:

The method comprises the steps that first network equipment receives a first message sent by a terminal;

The first message comprises first information or a first indication, wherein the first indication is used for indicating that the first information exists in the terminal;

the first information includes at least one of effective SL measurement results, effective candidate relay equipment information;

the effective SL measurement result is obtained by the terminal in a non-connection state and executing SL measurement;

And the information of the effective candidate relay equipment is obtained by the terminal in a non-connection state and carrying out SL measurement.

In a third aspect, a method for configuring measurement of a side link SL is provided, including:

the second network equipment sends SL measurement configuration information to the terminal;

Wherein the SL measurement configuration information is transmitted through at least one of a system message and an RRC connection release message;

the SL measurement configuration information is used for performing the SL measurement in a non-connected state of the terminal.

In a fourth aspect, there is provided a terminal comprising:

A measurement module for performing SL measurement in a non-connection state;

a first sending module, configured to send a first message to a first network device;

the first message comprises first information or a first indication, wherein the first indication is used for indicating that the first information exists in the terminal, and the first information comprises at least one of a valid SL measurement result and information of a valid candidate relay device.

In a fifth aspect, there is provided a first network device comprising:

the first receiving module is used for receiving a first message sent by the terminal;

In a sixth aspect, there is provided a second network device comprising:

a second transmitting module, configured to transmit SL measurement configuration information to the terminal by using a second network device;

In a seventh aspect, there is provided a terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the first aspect.

An eighth aspect provides a terminal, including a processor and a communication interface, where the processor is configured to perform SL measurement in a non-connected state;

effective SL measurements;

Information of valid candidate relay devices.

In a ninth aspect, a network side device is provided, comprising a processor and a memory storing a program or instructions executable on the processor, the program or instructions implementing the steps of the method as described in the second aspect when executed by the processor, or the program or instructions implementing the steps of the method as described in the third aspect when executed by the processor.

In a tenth aspect, a network side device is provided, including a communication interface, where the communication interface is configured to receive a first message sent by a terminal;

An eleventh aspect provides a network side device, including a communication interface, where the communication interface is configured to send SL measurement configuration information to a terminal;

In a twelfth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor, performs the steps of the method as described in the first aspect, or performs the steps of the method as described in the second aspect, or performs the steps of the method as described in the third aspect.

A thirteenth aspect provides a wireless communication system comprising a terminal operable to perform the steps of the method as described in the first aspect and a first network side device operable to perform the steps of the method as described in the second and third aspects;

Or a wireless communication system comprising a terminal, a first network device and a second network device, the terminal being operable to perform the steps of the method as described in the first aspect, the first network side device being operable to perform the steps of the method as described in the second aspect, the second network side device being operable to perform the steps of the method as described in the third aspect.

In a fourteenth aspect, there is provided a chip comprising a processor and a communication interface, the communication interface and the processor being coupled, the processor being for running a program or instructions to implement the method according to the first aspect, or to implement the method according to the second aspect, or to implement the method according to the third aspect.

In a fifteenth aspect, there is provided a computer program/program product stored in a storage medium, the program/program product being executable by at least one processor to implement the steps of the SL measurement reporting method according to the first aspect, or the program/program product being executable by at least one processor to implement the steps of the SL measurement reporting method according to the second aspect, or the program/program product being executable by at least one processor to implement the steps of the SL measurement configuration method according to the third aspect.

In the embodiment of the application, the terminal executes SL measurement in a non-connection state, and sends a first message to the first network equipment, wherein the first message comprises the first information or a first indication, the first indication is used for indicating that the first information exists in the terminal, and the first information comprises at least one of a valid SL measurement result and information of a valid candidate relay equipment. According to the embodiment of the application, through optimizing the SL measurement behavior related to the UE, namely, the terminal can conduct SL measurement in advance in a non-connection state, further, measurement related information can be rapidly provided in the relay link establishment process, and thus, the delay of relay link establishment can be effectively shortened.

Drawings

Fig. 1 is a block diagram of a wireless communication system to which embodiments of the present application are applicable;

Fig. 2 is a block diagram of another wireless communication system to which embodiments of the present application are applicable;

fig. 3 is a block diagram of another wireless communication system to which embodiments of the present application are applicable;

FIG. 4 is a flow chart of a related art SL relay architecture based multipath setup;

fig. 5 is a flowchart of a side link SL measurement reporting method provided by an embodiment of the present application;

Fig. 6 is a flowchart of a multi-path setup of a SL relay architecture according to an embodiment of the present application;

fig. 7 is a flowchart of a multipath setup of another SL relay architecture according to an embodiment of the present application;

Fig. 8 is a flowchart of another method for reporting measurement of a side link SL according to an embodiment of the present application;

fig. 9 is a flowchart of a side link SL measurement configuration method according to an embodiment of the present application;

FIG. 10 is a schematic diagram of a communication device according to an embodiment of the present application;

Fig. 11 is a schematic diagram of a terminal according to an embodiment of the present application;

Fig. 12 is a schematic diagram of a network side device according to an embodiment of the present application.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.

The terms "first," "second," and the like, herein, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the "first" and "second" distinguishing between objects generally are not limited in number to the extent that the first object may, for example, be one or more. Furthermore, the "or" in the present application means at least one of the connected objects. For example, "A or B" encompasses three schemes, namely scheme one including A and excluding B, scheme two including B and excluding A, scheme three including both A and B. The character "/" generally indicates that the context-dependent object is an "or" relationship.

The term "indication" according to the application may be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). The direct indication may be understood that the sender explicitly informs the specific information of the receiver, the operation to be executed, the request result, and the like in the sent indication, and the indirect indication may be understood that the receiver determines the corresponding information according to the indication sent by the sender, or determines the operation to be executed, the request result, and the like according to the determination result.

It should be noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single-carrier frequency division multiple access (Single-carrier Frequency-Division Multiple Access, SC-FDMA), or other systems. The terms "system" and "network" in embodiments of the application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New Radio (NR) system for exemplary purposes and NR terminology is used in much of the following description, but the techniques may also be applied to systems other than NR systems, such as the 6th Generation (6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a Mobile phone, a tablet Computer (Tablet Personal Computer), a Laptop (Laptop Computer), a notebook (Personal DIGITAL ASSISTANT, PDA), a palm Computer, a netbook, an Ultra-Mobile Personal Computer (Ultra-Mobile Personal Computer, UMPC), a Mobile internet device (Mobile INTERNET DEVICE, MID), a Personal Digital Assistant (PDA), Augmented Reality (Augmented Reality, AR), virtual Reality (VR) devices, robots, wearable devices (Wearable Device), aircraft (FLIGHT VEHICLE), in-vehicle devices (Vehicle User Equipment, VUE), on-board equipment, pedestrian terminals (PEDESTRIAN USER EQUIPMENT, PUE), smart home (home appliances having wireless communication function, such as refrigerator, television, washing machine or furniture, etc.), game machine, personal computer (Personal Computer, PC), teller machine or self-service machine, etc. the wearable device comprises an intelligent watch, an intelligent bracelet, an intelligent earphone, intelligent glasses, intelligent jewelry (intelligent bracelets, intelligent rings, intelligent necklaces, intelligent anklets, intelligent footchains and the like), an intelligent wristband, intelligent clothing and the like. The in-vehicle apparatus may also be referred to as an in-vehicle terminal, an in-vehicle controller, an in-vehicle module, an in-vehicle component, an in-vehicle chip, an in-vehicle unit, or the like. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may include an access network device or core network device, where the access network device may also be referred to as a radio access network (Radio Access Network, RAN) device, a radio access network function, or a radio access network element. The Access network device may include a base station, a wireless local area network (Wireless Local Area Network, WLAN) Access Point (AP), or a wireless fidelity (WIRELESS FIDELITY, WIFI) node, etc. Wherein the base station may be referred to as Node B (NB), evolved Node B (eNB), next generation Node B (the next generation Node B, gNB), new air interface Node B (NR Node B), access point, relay station (Relay Base Station, RBS), serving base station (Serving Base Station, SBS), base transceiver station (Base Transceiver Station, BTS), A radio base station, a radio transceiver, a Basic service set (Basic SERVICE SET, BSS), an Extended service set (Extended SERVICE SET, ESS), a Home Node B (HNB), a home evolved Node B (home evolved Node B), a transmission and reception point (Transmission Reception Point, TRP), or some other suitable terminology in the field, so long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary, and it should be noted that, in the embodiment of the present application, only a base station in an NR system is described by way of example, and the specific type of the base station is not limited.

For ease of understanding, some of the following descriptions are directed to embodiments of the present application:

The relay technology in the wireless communication system is to add one or more relay nodes between the base station and the terminal, and is responsible for forwarding the wireless signal once or more times, i.e. the wireless signal can reach the terminal only through multiple hops. The wireless relay technology not only can be used for expanding cell coverage and compensating cell coverage blind points, but also can improve cell capacity through space resource multiplexing. For indoor coverage, the Relay technology can also play a role in overcoming the penetration loss and improving the indoor coverage quality.

Taking a simpler two-hop relay as an example, the wireless relay divides a base station-terminal link into two links of a base station-relay station and a relay station-terminal, so that a link with poor quality is replaced by two links with good quality, and higher link capacity and better coverage are obtained.

The currently supported Relay in LTE (Long Term Evolution ) is a U2N Relay (UE-to-Network Relay), i.e. one end of the Relay is connected to the UE, and the other end is connected to the Network side. The UE connected to the Relay may be referred to as a Remote UE (Remote UE).

The NR will also study how to support a UE-to-Network Relay mechanism, a typical scenario is shown in fig. 2, where a Relay UE is exemplified as a Relay station. In a typical UE-to-Network scenario, a Remote UE needs to transmit data with a Network side, but due to poor coverage, a Relay UE is found to be a Relay, where a Uu interface is between the Relay UE and a base station, and a sidelink (PC 5) interface is between the Relay UE and the Remote UE. In general, a Relay UE is open and can serve any Remote UE.

For the SL relay architecture, in addition to the typical scenario shown in fig. 2, a multipath (Multiple path) scenario is included, as shown in fig. 3, which means that the Remote UE establishes both a non-direct path (INDIRECT PATH) and a direct path (DIRECT PATH). The non-direct connection path refers to a wireless link established between the Remote UE (or Primary UE) and the base station through a Uu air interface of the Relay UE (or Secondary UE), and the direct connection path refers to a wireless link established between the Remote UE (or Primary UE) and the base station through a Uu air interface of the Remote UE (or Secondary UE). Note that, in fig. 3, CP refers to a Control Plane (Control Plane), UP refers to a User Plane (User Plane), three multipaths are illustrated in fig. 3 for illustration only, and the multipath scenario is not limited to the three modes shown in fig. 3.

In addition, the connection between the two UEs is not necessarily a PC5 interface, and the interface between the two UEs may be a wired connection or an ideal inter-UE connection (IDEAL INTER-UE connection), in which case multipath may refer to a Primary UE (corresponding to the remote UE role in fig. 3) and both INDIRECT PATH and DIRECT PATH are established.

In the related art, the multipath establishment flow may refer to fig. 4.

Wherein part (a) of fig. 4 relates to a multipath setup procedure of the remote UE in RRC (Radio Resource Control ) IDLE state (rrc_idle):

step 0.Remote UE is in rrc_idle state;

Step 1, remote UE sends RRC connection establishment request (RRCSetupRequest) information to a base station through a Uu air interface;

Step 2, the base station replies RRC connection establishment (RRCSetup) information to the Remote UE through a Uu air interface;

step 3.Remote UE sends RRC connection setup complete (RRCSetupComplete) message to the base station over Uu air interface;

Wherein, according to step 1-3, remote UE completes the establishment of the direct connection path;

step 4, the base station sends a security mode command (SecurityModeCommand) message to the Remote UE through a Uu air interface;

Step 5.Remote UE replies a security mode complete (SecurityModeComplete) message to the base station over Uu air interface;

step 6, the base station sends SL measurement (SL measurement) configuration to Remote UE through Uu air interface, the Remote UE measures according to the SL measurement configuration, and sends SL measurement result to the base station, wherein the SL measurement result comprises at least one candidate relay UE (CANDIDATE RELAY UE);

Step 7, the base station sends RRC reconfiguration (RRCReconfiguration) information to Remote UE through Uu air interface, RRCReconfiguration information indicates that non-direct connection path is established through a relay UE;

step 8a. Remote UE sends RRC reconfiguration complete (RRCReconfigurationComplete) message to base station over Uu air interface;

Optionally, the Remote UE also sends an RRC reconfiguration complete (RRCReconfigurationComplete) message to the Relay base station via the Relay UE, e.g. in case the Remote UE is configured with split signaling radio bearer 1 (split SRB 1) and the split SRB1 activates PDCP copy function (split SRB1 with duplication enabled);

Wherein, according to step 4-8, remote UE completes the establishment of the non-direct path.

Wherein part (b) of fig. 4 relates to a multipath setup procedure of the remote UE in an RRC INACTIVE state (rrc_inactive):

step 0.Remote UE is in rrc_inactive state;

step 1, remote UE sends RRC connection recovery request (RRCResumeRequest) information to a base station through a Uu air interface;

Step 2, the base station replies RRC connection recovery (RRCResume) information to the Remote UE through a Uu air interface;

Step 3.Remote UE sends RRC connection resume complete (RRCResumeComplete) message to base station through Uu air interface;

Wherein, according to step 1-3, remote UE completes the establishment of the direct connection path. It should be noted that, for the Remote UE in rrc_inactive state, the security activation procedure between the Remote UE and the base station is completed in the RRC Resume procedure of steps 1-3, so that steps 4-5 similar to those of part (a) of fig. 4 may be omitted;

and 4, the base station transmits SL measurement configuration to Remote UE through Uu air interface, and the Remote UE performs measurement according to the SL measurement configuration and transmits SL measurement result to the base station. Wherein the SL measurement result comprises at least one candidate relay UE (CANDIDATE RELAY UE);

And 5, the base station sends RRC reconfiguration (RRCReconfiguration) information to the Remote UE through a Uu air interface. The RRC reconfiguration (RRCReconfiguration) message indicates that a non-direct path is established through a certain relay UE;

Step 6a. Remote UE sends RRC reconfiguration complete (RRCReconfigurationComplete) message to base station over Uu air interface;

Step 6b. Optionally, the Remote UE also sends an RRC reconfiguration complete (RRCReconfigurationComplete) message to the Relay base station through the Relay UE, for example, in the case where the Remote UE is configured with split SRB1 with duplication enabled;

according to step 4-6, the remote UE completes the establishment of the non-direct path.

In the related art, the multipath relay establishment scheme is that a terminal (Remote UE) starts to perform SL relay measurement configuration, measurement and reporting under a radio resource control CONNECTED state (rrc_connected), which results in a larger delay found by a potential relay device and further results in a longer delay for establishing a relay link. The scheme provided by the application shortens the time delay of relay link establishment by optimizing the measurement behavior related to the UE (remote UE).

The SL measurement reporting method and the related device provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings through some embodiments and application scenarios thereof.

Referring to fig. 5, fig. 5 is a flowchart of a side link SL measurement reporting method provided by an embodiment of the present application, which is used for a terminal, and as shown in fig. 5, the method includes the following steps:

step 501, the terminal performs SL measurement in a non-connection state.

In the embodiment of the present application, the non-connection state includes an IDLE state (rrc_idle) or a non-active state (rrc_inactive).

Compared with the related art, the terminal starts to perform the SL relay measurement in the radio resource control CONNECTED state (rrc_connected), and in the embodiment of the present application, in the non-CONNECTED state, for example, the RRC IDLE state (rrc_idle) or the RRC INACTIVE state (rrc_inactive) performs measurement in advance, so as to obtain a measurement result satisfying the preset condition as soon as possible, and the auxiliary network can configure the target relay link after the terminal enters the CONNECTED state, thereby reducing the delay of multi-path establishment.

Optionally, before the terminal performs the side link SL measurement in the non-connected state, the method further includes:

the terminal receives SL measurement configuration information sent by second network equipment;

The SL measurement configuration information is used for performing the side link SL measurement in the disconnected state of the terminal.

In the embodiment of the present application, corresponding to that the terminal performs the SL measurement in the non-connection state, the SL measurement configuration information for performing the side link SL measurement may be further obtained, and in an alternative solution, the SL measurement configuration information may be obtained from the second network device. It is to be understood that the embodiment of the present application is not limited to this manner, and the SL measurement configuration information may be determined by using preset SL measurement configuration information or the like.

The second network device providing the SL measurement configuration information and the first network device for which the terminal performs measurement reporting (see step 502) may be the same network device or may be different network devices. This is because the corresponding service node may or may not have changed when the terminal receives the SL measurement configuration information and performs measurement reporting.

Optionally, the SL measurement configuration information comprises at least one of a frequency point of SL measurement, a SL measurement quantity and a SL measurement reporting threshold.

In the embodiment of the application, the Remote UE obtains SL measurement configuration information in RRC_IDLE state or RRC_INACTIVE according to at least one of system information (for example SIB 12) and RRCRELEASE information, wherein the configuration information comprises at least one of a frequency point list of SL measurement, SL measurement quantity and a SL measurement reporting threshold.

The SL measurement may be at least one of reference signal received Power SL-RSRP (Sidelink-REFERENCE SIGNAL RECEIVED Power) of the side link and reference signal received Power SD-RSRP (Sidelink Discovery-REFERENCE SIGNAL RECEIVED Power) of the side link discovery message, or may be other parameters for monitoring the quality of the side link. The SL-RSRP and the SD-RSRP measure DMRS (Demodulation REFERENCE SIGNAL ) reference information of PSSCH (PHYSICAL SIDELINK SHARED CHANNEL, physical layer side link shared channel). The difference between them is that the content of the transmission carried on the PSSCH is different, and the SD-RSRP is the case of a transmission side link discovery (SL discovery) message, and the SL-RSRP is the case of SL communication service data.

Optionally, in the embodiment of the present invention, in the process that the UE receives the RRC connection release (RRCRELEASE) message of the serving base station in the rrc_connected state and obtains the SL measurement configuration information in the rrc_idle state according to at least one of the system messages (for example, SIB 12) and RRCRELEASE messages, or in the process that the UE receives the RRC connection release (RRCRELEASE WITH suspendconfig) message carrying the suspended configuration of the serving base station in the rrc_connected state and obtains the SL measurement configuration information in the rrc_inactive state according to at least one of the system messages (for example, SIB 12) and RRCRELEASE messages.

In the embodiment of the present application, the SL measurement configuration information is sent through at least one of a system message and an RRC connection release message. The frequency points of SL measurement preferably follow RRCRELEASE configuration, for example, if RRCRELEASE does not configure a frequency point list of SL measurement, then follow system message (SERVING CELL SIB) configuration to perform, if RRCRELEASE message configures the frequency points of SL measurement, then perform measurement with the frequency points of SL measurement configured by RRCRELEASE message, or if both system message and RRCRELEASE message configure the frequency points of SL measurement, then perform measurement with the frequency points of SL measurement configured by RRCRELEASE message, and perform other types of SL measurement configuration information to perform logical similarity.

Optionally, the terminal performs SL measurement, including:

And executing side link SL measurement information according to measurement configuration information corresponding to the target type SL measurement configuration information in the RRC connection release message under the condition that the system message and the RRC connection release message received by the terminal both contain the target type SL measurement configuration information.

Wherein the target type of SL measurement configuration information is any type of SL measurement configuration information.

Optionally, the configuration information of the SL measurement in the RRC connection release message further includes at least one of an effective area of the SL measurement, an effective object of the SL measurement, and an effective duration of the SL measurement.

In the embodiment of the present application, the SL measurement configuration information is sent through an RRC connection release message. RRCRELEASE may configure at least one of a frequency point of SL measurement, an SL measurement quantity, and an SL measurement report threshold, and may further include at least one of an effective area of SL measurement (e.g., CELL ID LIST), an effective object of SL measurement (e.g., relay UE ID list), and an effective duration of SL measurement.

The effective area of the SL measurement may be a cell list, that is, the SL measurement configuration information (for example, at least one of a frequency point, an SL measurement quantity, and an SL measurement reporting threshold of the SL measurement) is only effective when the serving cell is one of the cells in the cell list, the effective object of the SL measurement may be a relay device list (designated relay device), that is, the effective period of the SL measurement configuration information (for example, at least one of a frequency point, an SL measurement quantity, and an SL measurement reporting threshold of the SL measurement) is only effective when the measurement object is one relay device (designated relay device) in the relay device list, and the effective period of the SL measurement controls the duration of the SL measurement in advance, and when the RRC connection release message is received, the RRC connection release message includes the effective period of the SL measurement, or the timer (timer) corresponding to the effective period of the SL measurement is understood to be the RRC connection release message is received when the RRC connection release message is received.

Optionally, in the embodiment of the present application, by configuring the effective area of SL measurement, the method may be used for cell reselection, for example, the terminal reselects the cell corresponding to the effective area of SL measurement only, or the terminal reselects the cell corresponding to the effective area of SL measurement preferentially.

Optionally, in the case that the SL measurement configuration information includes a frequency point of the SL measurement, the terminal performs the side link SL measurement, including:

the terminal indicates to an upper layer of the terminal to trigger a SL discovery process;

the terminal performs SL measurement for the candidate relay device determined by the SL discovery procedure.

The terminal indicates to an upper layer of the terminal to trigger a SL discovery process, and the method specifically comprises the steps that the terminal provides frequency point information of SL measurement for the upper layer of the terminal in a non-connection state;

And the upper layer of the terminal responds to the SL frequency point information to trigger an SL discovery process.

In the embodiment of the present application, when the Remote UE is released to the rrc_idle or rrc_inactive state, the Remote UE performs the following operations:

providing SL frequency point information to an upper layer of the UE according to the SL measured frequency point, so that the upper layer triggers an SL discovery process, wherein the SL discovery process is used for discovering candidate relay devices;

Starting SL measurement for candidate relay equipment according to the frequency point of the SL measurement;

optionally, a SL measurement timer is started according to the effective duration of the SL measurement, where the SL measurement timer enables the SL measurement to be performed within the effective duration after the start (i.e., the effective duration of the SL measurement).

Optionally, the method further comprises the step that the terminal pauses or stops SL measurement under the condition that a second preset condition is met;

Wherein the second preset condition includes at least one of the following:

a timer (timer) corresponding to the effective duration of the SL measurements times out;

the candidate relay device determined in the SL discovery process does not belong to the active object of the SL measurement;

the cell reselected by the terminal does not support layer two U2N relay;

the cell reselected by the terminal does not support multipath relay;

The cell reselected by the terminal does not support SL measurements in the non-connected state.

In the embodiment of the application, the conditions for suspending or stopping measurement by the UE include, but are not limited to, at least one of the following:

The effective duration timer of SL measurement is overtime, stop measuring;

The SL discovery procedure is used to discover the candidate relay device that is not an active object of the SL measurement, and the UE may not be measured;

If the UE's current serving cell does not support L2U2N (UE to Network) Relay (which may be determined by means of the indication SL-L2U2N-Relay-r17 in the related art) or does not support multi-path Relay (multi-PATH RELAY) or SL measurement in the non-connected state (also understood as not supporting fast multi-path measurement configuration). Among them, whether or not multipath relay (multi-PATH RELAY) is supported and whether or not SL measurement in a non-connection state is supported may be indicated with corresponding indication information.

Step 502, the terminal sends a first message to a first network device;

The first information includes at least one of valid SL measurement results and valid candidate relay device information.

Optionally, the SL measurement result comprises at least one of a reference signal received power SD-RSRP measurement result of a side link discovery message, a side link reference signal received power SL-RSRP measurement result, a relay device identifier, and a relay device serving cell identifier.

In the embodiment of the present application, in step 501, performing SL measurement may obtain information such as SD-RSRP measurement results, SL-RSRP measurement results, relay device identifier, relay device serving cell identifier, and the like. A first message may be sent to the first network device when the information satisfies a preset requirement (a first preset condition).

Optionally, the terminal sends a first message to a first network device, including:

The terminal sends a first message to first network equipment under the condition that a first preset condition is met;

Wherein the first preset condition includes at least one of:

The terminal has first information;

The service node of the terminal supports a layer two U2N relay;

The service node of the terminal supports multipath relay;

the service node of the terminal supports the non-connection state to carry out SL measurement.

The preset condition at least comprises first information of existence of the terminal, wherein the first information comprises at least one of effective SL measurement results and effective candidate relay equipment information. That is, in case the terminal finds a valid SL measurement result and information of a valid candidate relay device through SL measurement, a first message is transmitted to the first network device.

The above-mentioned valid SL measurement results may be understood as measurement results satisfying the relay link requirement, and the above-mentioned valid candidate relay devices may be understood as relay devices satisfying the relay link requirement (or relay devices satisfying the relay criterion).

Optionally, the effective SL measurement result comprises at least one of a SL measurement result which is larger than or equal to a first preset threshold, a SL measurement result which accords with an effective area, a SL measurement result which accords with an effective object;

Optionally, the effective candidate relay device satisfies at least one of the following conditions:

relay equipment with SL link quality between the relay equipment and the terminal being greater than or equal to a second preset threshold;

relay equipment identical to a serving base station of the terminal;

Relay equipment identical or equivalent to the serving public land mobile network PLMN of the terminal;

relay equipment with Uu link quality between the relay equipment and the service base station being greater than or equal to a third preset threshold;

relay device conforming to the active object of SL measurement.

The first preset threshold may be a SL measurement reporting threshold, and the SL measurement result greater than or equal to the first preset threshold is a SL measurement result that meets the SL measurement reporting threshold.

Optionally, the quality of the SL link between the relay device and the terminal may be determined by using the value of SL-RSRP or SD-RSRP, and the corresponding second preset threshold may be set to a preset value of SL-RSRP or SD-RSRP.

Optionally, the Uu link quality between the relay device and the serving base station may be determined by using a Uu RSRP value, and the corresponding third preset threshold may be set to a preset Uu RSRP value.

It can be understood that the embodiment of the present application does not limit the above-mentioned judging parameter of the link quality, and the above-mentioned RSRP value is only used as a judging example.

In the embodiment of the present application, when the information obtained by performing SL measurement satisfies the first preset condition, a first message may be sent to the first network device, where sending the first message may be sending the first information, that is, directly sending information (first information) that satisfies the first preset condition to the first network device, or sending a first indication (available indication), that is, notifying, by the first indication, that at least one of the effective SL measurement result and the effective candidate relay device is obtained by SL measurement of the terminal in the first network device.

Optionally, the first preset condition includes any one of the following:

The service node of the terminal supports a layer two U2N relay;

The service node indicates support for multipath relay;

The serving node indicates that the non-connected state is supported for SL measurements.

In the embodiment of the present application, whether to send the first message to the first network device may also be determined by the current service node of the terminal, for example, if the service node indicates that support layer two U2N relay (UE to Network Relay) is supported, and if the service node indicates that support of non-connection state is supported for SL measurement, the first message may be sent to the first network device. Whether the service node supports layer two U2N Relay can be judged by means of indication SL-L2U2N-Relay-r17 in the related art, whether the service node performs multi-path Relay or supports non-connection state for SL measurement, and indication can be performed by corresponding indication information (newly set).

The terminal sends a first message to first network equipment in the process of executing RRC connection establishment flow, wherein the first message comprises the first indication;

Or the terminal sends a first message to a first network device in the process of executing the RRC connection recovery flow, wherein the first message comprises the first information or the first indication;

or the terminal sends a first message to the first network equipment in a connection state, wherein the first message comprises the first information or the first indication.

The embodiment of the application further limits the sending time of the first message. One type of optional implementation manner is to execute the first message under the RRC connection establishment procedure or the RRC connection recovery procedure, that is, execute the sending of the first message before the terminal enters the connected state, so that the efficiency of relay link establishment can be further improved. Another alternative embodiment is to perform the sending of the first message in the CONNECTED state (rrc_connected).

Optionally, before the terminal sends the first message to the first network device, the method further includes:

Receiving a first request message sent by the first network device, wherein the first request message comprises a second indication for requesting to report first information;

The terminal sends a first message to a first network device under the condition that a first preset condition is met, and the method comprises the following steps:

And the terminal responds to the first request message to send a first message to the first network equipment under the condition that the first preset condition is met.

In an embodiment of the present application, optionally, the sending of the first message is performed based on a request (first request message) from the network side, that is, the terminal provides the available measurement information (first information) to the first network device through the first message after receiving the request message (first request message).

Optionally, the first message includes the first information, and the terminal executes an RRC connection recovery procedure, where, when sending the first message to the first network device, the first request message is carried by a radio resource control RRC connection recovery message, or the first message is carried by an RRC connection recovery complete message. Further reducing the flow delay of the measurement report of the side link SL.

Optionally, the first message includes the first information, and when the terminal is in a connection state, the first message is sent to the first network device, the first network device sends a security mode command and simultaneously sends a first request message, and the terminal feeds back a security mode completion message and simultaneously feeds back the first message, so that the flow delay of measurement reporting of the side link SL is further reduced.

Optionally, the first message includes a first indication, and after the terminal sends the first message to the first network device, the method further includes:

The terminal receives a second request message sent by the first network device, wherein the second request message comprises a third indication for requesting to report the first information;

In response to the second request message, the terminal sends a second message to the first network device;

wherein the second message includes the first information.

In the embodiment of the present application, optionally, after receiving the first indication, that is, the first network device knows that the available measurement information (first information) exists in the terminal, the first network device sends a request message (second request message) to the terminal to obtain the available measurement information, and the terminal provides the available measurement information (first information) to the first network device through the second message after receiving the request (second request message).

Optionally, the first message includes the first indication, and in case of performing the RRC connection setup procedure transmission, the second request message (UEInformationRequest) multiplexes transmission with a security mode command, or the second message (UEInformationResponse) multiplexes transmission with a security mode complete message. In the embodiment of the application, the terminal sends the first indication in the process of entering the RRC_CONNECTED from the RRC_IDLE state, and after the terminal enters the RRC_CONNECTED, the first network equipment sends the security mode message and simultaneously sends the second request message, and the terminal feeds back the security mode completion message and simultaneously feeds back the second message, thereby further saving the flow and signaling of measuring and reporting the side link SL.

Optionally, the first message includes the first indication, and in the case of sending in performing RRC connection recovery procedure, the second request message is a UEInformationRequest message, or the second message is a UEInformationResponse message. That is, in the embodiment of the present application, the terminal sends the first indication in the process of entering rrc_connected from the rrc_inactive state, and after the terminal enters rrc_connected, the first network device sends the second request message UEInformationRequest, and the terminal feeds back the second message UEInformationResponse.

Optionally, in the case of executing the RRC connection establishment procedure, the first indication is carried by an RRC connection establishment complete message;

Or in the case of executing the RRC connection recovery procedure, the first indication is carried through an RRC connection recovery complete message;

Or in the case of performing the RRC connection recovery procedure, the first information is carried through an RRC connection recovery complete message.

In the embodiment of the application, after receiving available measurement information sent by a terminal, the first network device selects candidate relay devices based on the information, and determines that the target relay device is used for establishing a relay link. The target relay device may be one or more than one target relay device. After receiving the target relay device indicated by the first network device, the terminal establishes a non-direct connection path between the terminal and the target relay device, and the specific establishment manner may refer to a relay link establishment procedure in the related art, which is not limited in the embodiment of the present application.

Optionally, the method further comprises:

the terminal receives a third message sent by the first network device, wherein the third message is used for indicating the target relay device;

And the terminal establishes a non-direct connection path between the terminal and the target relay equipment.

Optionally, the third message is an RRC reconfiguration message.

Optionally, the target relay device is determined according to the first message or the second message. The first message or the second message carries first information, that is, the first message or the second message carries at least one of a valid SL measurement result and information of a valid candidate relay device, and the first network device determines, according to the first information, a target relay device that can be used for establishing a relay link.

In order to facilitate understanding of the embodiments of the present application, the following exemplary descriptions of procedures that may be performed by the present application are provided.

As shown in fig. 6, example one (for rrc_connected- > rrc_idle Remote UE)

Step 0, the remote UE enters the rrc_idle state after receiving RRCRELEASE message from the serving base station in the rrc_connected state.

The Remote UE obtains SL measurement configuration information in the RRC_IDLE state according to at least one of system information (such as SIB 12) and/or RRCRELEASE information, wherein the configuration information comprises at least one of a frequency point list of SL measurement, SL measurement quantity and a SL measurement reporting threshold;

wherein, the frequency points of SL measurement preferably follow RRCRELEASE configuration, if RRCRELEASE does not configure the frequency point list of SL measurement, then follow system message (SERVING CELL SIB) configuration

The RRCRELEASE message may also include at least one of the active area (e.g., CELL ID LIST) of the SL measurement, the active object of the SL measurement (e.g., relay UE ID list), and the active duration of the SL measurement;

the Remote UE performs the following operations when released to the rrc_idle state:

Providing SL frequency point information to an upper layer of the UE according to the SL measured frequency point so that the upper layer triggers an SL discovery process;

starting SL measurement according to the frequency point of the SL measurement;

starting an SL measurement timer according to the effective duration of SL measurement;

Conditions for Remote UE to suspend or stop measurements:

The effective duration timer of SL measurement is overtime, stop measuring;

An active object that is not SL measured, then the UE may not be measured;

If the cell reselected by the UE does not support L2U2N Relay (judged by means of an indication sl-L2U2N Relay-r17 in the related art) or does not support multi-PATH RELAY or does not support fast multi-path setup measurement;

Step 1.Remote UE sends RRCSetupRequest message to base station over Uu air interface.

And 2, the base station replies RRCSetup information to the Remote UE through the Uu air interface.

And 3. The remote UE sends RRCSetupComplete information to the base station through the Uu air interface.

In case the Remote UE satisfies a combination of conditions that there is a SL measurement meeting a threshold, a SL measurement meeting an active object, the serving base station or serving cell indicates that multi-PATH RELAY or fast multi-pathsetup measurements are supported, a valid candidate relay UE is indicated at RRCSetupComplete, wherein the valid candidate relay UE is defined as a UE meeting a relay UE selection criterion.

According to step 1-3, remote UE completes the establishment of the direct connection path.

And 4, the base station sends SecurityModeCommand information to the Remote UE through a Uu air interface.

Step 4a. On the premise that RRCSetupComplete indicates that SL measurements are available or that a candidate relay UE is found, the base station requests to obtain SL measurements through UEInformationRequest.

The step 4a may be transmitted together with the downlink multiplexing of the step 4, or may be another downlink message after the step 4, and may be independently transmitted.

And 5. The remote UE replies SecurityModeComplete a message to the base station through the Uu air interface.

Step 5a. Remote UE replies UEInformationResponse a message to the base station over Uu air interface, wherein UEInformationResponse message carries SL measurement result, wherein the SL measurement result includes at least one of SD-RSRP measurement result, SL-RSRP measurement result, relay UE ID, relay UE SERVING CELL ID.

The precondition for the execution of step 5a is that the security activation procedure associated with steps 4 and 5 is successful. Step 5a may be transmitted together with the uplink multiplexing in step 5, or may be another uplink message after step 5, and transmitted independently.

And 6, the base station sends RRCReconfiguration information to the Remote UE through a Uu air interface. The RRCReconfiguration message indicates that a non-direct path is established by a certain relay UE. Here, a certain relay UE is based on the relay UE in the report of step 5 a.

And step 7a, the remote UE transmits RRCReconfigurationComplete messages to the base station through a Uu air interface.

Step 7b. Optionally, the Remote UE also sends RRCReconfigurationComplete a message to the Relay base station via the Relay UE, for example, if the Remote UE is configured with split SRB1 with duplication enabled.

According to step 4-7, the remote UE completes the establishment of the non-direct path.

As shown in fig. 7, example two (for rrc_connected- > rrc_ INACTIVE Remote UE)

Step 0, the remote UE enters the rrc_inactive state in the rrc_connected state after receiving RRCRELEASE WITH suspendconfig message from the serving base station.

The Remote UE obtains SL measurement configuration information in RRC_INACTIVE state according to at least one of system information (such as SIB 12) and/or RRCRELEASE information, wherein the configuration information comprises at least one of a frequency point list of SL measurement, SL measurement quantity and a SL measurement report threshold;

The frequency points of the SL measurement preferably follow RRCRELEASE configuration, and if RRCRELEASE is not configured with the frequency point list of the SL measurement, SERVING CELL SIB configuration is followed;

The Remote UE, when released to the rrc_inactive state, performs the following operations:

starting SL measurement according to the frequency point of the SL measurement;

And starting the SL measurement timer according to the effective duration of the SL measurement.

Conditions for Remote UE to suspend or stop measurements:

The effective duration timer of SL measurement is overtime, stop measuring;

An active object that is not SL measured, then the UE may not be measured;

step 1.Remote UE sends RRCResumeRequest message to base station over Uu air interface.

And 2a, the base station replies RRCResume information to the Remote UE through a Uu air interface. RRCResume message carries a request to obtain SL measurements.

And 2b, the base station replies RRCResume information to the Remote UE through the Uu air interface.

Step 3a. In the case of RRCResume message carrying request to obtain SL measurement result (corresponding to step 2 a), the Remote UE sends RRCResumeComplete message to the base station through Uu air interface.

In case that the Remote UE has a SL measurement result satisfying the threshold, a SL measurement result conforming to the active object, the serving base station or the serving cell indicates that multi-PATH RELAY or fast multi-path setup measurement is supported, and the SL measurement result is carried at RRCResumeComplete, wherein the SL measurement result includes at least one of an SD-RSRP measurement result, an SL-RSRP measurement result, a relay UE ID, and a relay UE SERVING CELL ID.

Step 3b. In the case that RRCResume message does not carry request to obtain SL measurement result (corresponding to step 2 b), remote UE sends RRCResumeComplete message to base station through Uu air interface.

In case the Remote UE satisfies a combination of conditions that there is a SL measurement meeting a threshold, a SL measurement meeting an active object, the current cell indication supports multi-PATH RELAY or fast multi-path setup measurements, RRCResumeComplete carries an available SL measurement or an indication that a candidate relay UE is found, wherein the candidate relay UE is defined as a UE meeting a relay UE selection criterion.

For the flow of the above steps 2a-3a, with reference to part (a) of fig. 7, the subsequent steps 4-5 are performed.

And 4, the base station sends RRCReconfiguration information to the Remote UE through a Uu air interface. The RRCReconfiguration message indicates that a non-direct path is established by a certain relay UE. For the procedure of 2a-3a, a certain relay UE here is based on the relay UE in the step 3a report. Step 5a. Remote UE sends RRCReconfigurationComplete a message to the base station over Uu air interface.

Step 5b. Optionally, the Remote UE also sends RRCReconfigurationComplete a message to the Relay base station via the Relay UE, for example, if the Remote UE is configured with split SRB1 with duplication enabled.

According to step 4-5, the remote UE completes the establishment of the non-direct path.

For the flow of the above-described step 2b-3b, with reference to part (b) of fig. 7, the subsequent step 4-7 is performed.

Step 4. On the premise that RRCResumeComplete indicates that SL measurement results are available or candidate relay UEs are found, the base station requests to obtain SL measurement results through UEInformationRequest.

And 5. The remote UE replies UEInformationResponse a message to the base station through a Uu air interface, wherein the UEInformationResponse message carries SL measurement results, and the SL measurement results comprise at least one of SD-RSRP measurement results, SL-RSRP measurement results, relay UE ID and relay UE SERVING CELL ID.

And 6, the base station sends RRCReconfiguration information to the Remote UE through a Uu air interface. The RRCReconfiguration message indicates that a non-direct path is established by a certain relay UE. For the procedure of 2b-3b, a certain relay UE here is based on the relay UE in the report of step 5.

Compared with the multi-path establishment mode in the related art, the embodiment of the application optimizes the time (see fig. 4) for starting the side link measurement configuration and reporting (SL relay measure config + measurement report) in the RRC_CONNECTED state in the related art, and the targeted design is suitable for the SL frequency measurement scheme, so that CANDIDATE RELAY UE is discovered as soon as possible, and the purpose of reducing the overall time delay of the multi-path establishment flow is achieved. Furthermore, the reduction of the receiving and transmitting flow of the signaling can be realized through multiplexing of the signaling or the channel, so that the path establishment time delay is further reduced.

The embodiment of the application comprises the steps that the terminal executes SL measurement in a non-connection state, the terminal sends a first message to first network equipment, wherein the first message comprises first information or first indication, the first indication is used for indicating the existence of the first information by the terminal, and the first information comprises at least one of effective SL measurement results and effective candidate relay equipment information. According to the embodiment of the application, the delay of relay link establishment is shortened by optimizing the SL measurement behavior related to the UE.

Referring to fig. 8, fig. 8 is a flowchart of a side link SL measurement reporting method provided by an embodiment of the present application, which is used for a first network device, and as shown in fig. 8, the method includes the following steps:

step 801, a first network device receives a first message sent by a terminal;

Optionally, the first network device receives a first message sent by a terminal, including at least one of the following:

The first network equipment receives a first message sent by the terminal in the process of executing the RRC connection establishment flow, wherein the first message comprises the first indication;

Or the first network equipment receives a first message sent by the terminal in the process of executing the RRC connection recovery flow, wherein the first message comprises the first information or the first indication;

Or receiving a first message sent by the terminal in a connection state, wherein the first message comprises the first information or the first indication.

Optionally, in the case that the first message includes the first information, before the first network device receives the first message sent by the terminal, the method further includes:

The first network equipment sends a first request message to the terminal, wherein the first request message comprises a second indication for requesting to report first information;

The first network equipment receives a first message sent by a terminal, and the first network equipment receives the first message sent by the terminal in response to the first request message.

Optionally, in the case that the first message includes the first indication, after the first network device receives the first message sent by the terminal, the method further includes:

The first network equipment sends a second request message to the terminal, wherein the second request message comprises a third indication for requesting reporting of the first information;

The first network equipment receives a second message sent by the terminal in response to the second request message;

wherein the second message includes the first information.

Optionally, the method further comprises:

And the first network equipment sends a third message to the terminal, wherein the third message indicates the target relay equipment.

It should be noted that, in this embodiment, as an implementation manner of the first network device corresponding to the embodiment shown in fig. 5, a specific implementation manner of the first network device may refer to a related description in the embodiment shown in fig. 5, and in order to avoid repetitive description, this embodiment is not repeated. All the implementations in the embodiment of fig. 5 described above are applicable to the embodiment of the method performed by the first network device, and achieve the same or similar beneficial effects. In order to avoid repetitive description, the present embodiment is not described in detail.

Referring to fig. 9, fig. 9 is a flowchart of a side link SL measurement configuration method provided by an embodiment of the present application, for a second network device, as shown in fig. 9, where the method includes the following steps:

step 901, the second network device sends SL measurement configuration information to the terminal;

Optionally, the configuration of the SL measurement in the RRC connection release message further includes at least one of an effective area of the SL measurement, an effective object of the SL measurement, and an effective duration of the SL measurement.

It should be noted that, in this embodiment, as an implementation manner of the second network device corresponding to the embodiment shown in fig. 5, a specific implementation manner of the second network device may refer to a related description in the embodiment shown in fig. 5, and in order to avoid repetitive description, this embodiment is not repeated. All the implementations in the embodiment of fig. 5 described above are applicable to the embodiment of the method performed by the second network device, and achieve the same or similar beneficial effects. In order to avoid repetitive description, the present embodiment is not described in detail.

It should be noted that the second network device in the embodiment of the present application and the first network device in the embodiment of fig. 8 may be the same network device or different network devices. When both are the same network device, the first network device may be described as the second network device, or the second network device may be described as the first network device.

The method of the embodiment shown in fig. 5 provided by the embodiment of the present application, the execution body may be a terminal. In the embodiment of the present application, a method that a terminal executes the embodiment shown in fig. 5 is taken as an example, and a terminal device provided in the embodiment of the present application is described.

A terminal, comprising:

A measurement module for performing SL measurement in a non-connection state;

Optionally, the first sending module includes:

the first sending sub-module is used for sending a first message to the first network equipment under the condition that a first preset condition is met;

Wherein the first preset condition includes at least one of:

The terminal has first information;

Service node supporting layer two U2N relay of the terminal

The service node of the terminal supports multipath relay;

Optionally, the first sending module includes:

The second sending submodule is used for sending a first message to the first network equipment in the process of executing the RRC connection establishment flow, wherein the first message comprises the first indication;

or a third sending sub-module, configured to send a first message to a first network device in a process of executing the RRC connection recovery procedure, where the first message includes the first information or the first indication.

Optionally, the first message includes first information, and the terminal further includes:

the first receiving module is used for receiving a first request message sent by the first network equipment, wherein the first request message comprises a second indication for requesting to report first information;

wherein, the first sending module includes:

And the fourth sending submodule is used for responding to the first request message and sending the first message to the first network equipment.

Optionally, the first message includes a first indication, and the terminal further includes:

A third receiving module, configured to receive a second request message sent by the first network device, where the second request message includes a third indication for requesting reporting of the first information;

A third sending module, configured to send a second message to the first network device by using the terminal in response to the second request message;

wherein the second message includes the first information.

Optionally, the terminal further includes:

A fourth receiving module, configured to receive a third message sent by the first network device, where the third message is used to indicate a target relay device;

And the establishing module is used for establishing a non-direct connection path between the terminal and the target relay equipment.

Optionally, the terminal further includes:

a fifth receiving module, configured to receive SL measurement configuration information sent by the second network device;

Optionally, the measurement module includes:

and the first measurement submodule is used for executing SL measurement according to the measurement configuration information corresponding to the SL measurement configuration information of the target type in the RRC connection release message under the condition that the system message and the RRC connection release message received by the terminal both contain the SL measurement configuration information of the target type.

Optionally, the measurement module includes:

A triggering module, configured to instruct an upper layer of the terminal to trigger a SL discovery process when the SL measurement configuration information includes a frequency point of SL measurement;

And a second measurement submodule, configured to perform SL measurement for the candidate relay device determined by the SL discovery procedure.

Optionally, the terminal further includes:

a stopping module for suspending or stopping SL measurement in case that a second preset condition is satisfied;

Wherein the second preset condition includes at least one of the following:

a timer corresponding to the effective duration of the SL measurement times out;

the cell reselected by the terminal does not support layer two U2N relay;

the cell reselected by the terminal does not support multipath relay;

Or the effective candidate relay device satisfies at least one of the following conditions:

relay equipment identical to a serving base station of the terminal;

relay device conforming to the active object of SL measurement.

It should be noted that, the terminal provided by the embodiment of the present invention is a device capable of executing the above-mentioned SL measurement reporting method, and all the implementation manners in the above-mentioned SL measurement reporting method embodiment are applicable to the terminal, and the same or similar beneficial effects can be achieved. In order to avoid repetitive description, the present embodiment is not described in detail.

The terminal in the embodiment of the application can be an electronic device, for example, an electronic device with an operating system, or can be a component in the electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, the terminals may include, but are not limited to, the types of terminals 11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the present application are not limited in detail.

The terminal provided by the embodiment of the present application can implement each process implemented by the embodiments of the methods of fig. 5 to 9, and achieve the same technical effects, and in order to avoid repetition, a detailed description is omitted here.

The method of the embodiment shown in fig. 8 provided by the embodiment of the present application, the execution body may be a first network device. In the embodiment of the present application, a method in which the first network device executes the embodiment shown in fig. 8 is taken as an example, and the first network device provided in the embodiment of the present application is described.

The first network device includes:

Optionally, the first receiving module includes:

The first receiving sub-module is used for receiving a first message sent by the terminal in the process of executing the RRC connection establishment flow, wherein the first message comprises the first indication;

Or the second receiving sub-module is used for receiving the first message sent by the terminal in the process of executing the RRC connection recovery flow, wherein the first message comprises the first information or the first indication.

Optionally, the first network device further includes:

The system comprises a terminal, a fourth sending module, a first receiving module and a second receiving module, wherein the terminal is used for receiving a first request message from the terminal;

The first receiving module includes:

And the third receiving sub-module is used for receiving a first message sent by the terminal in response to the first request message.

Optionally, the first network device further includes:

a fifth sending module, configured to send a second request message to the terminal, where the second request message includes a third indication for requesting to report the first information;

A sixth receiving module, configured to receive a second message sent by the terminal in response to the second request message;

wherein the second message includes the first information.

Optionally, the first network device further includes:

And a sixth sending module, configured to send a third message to the terminal, where the third message indicates the target relay device.

It should be noted that, the first network device provided in the embodiment of the present invention is a device capable of executing the above-mentioned SL measurement reporting method, and all implementation manners in the above-mentioned SL measurement reporting method embodiment are applicable to the first network device, and the same or similar beneficial effects can be achieved. In order to avoid repetitive description, the present embodiment is not described in detail.

The first network device provided in the embodiment of the present application can implement each process implemented by the embodiments of the methods of fig. 5 to fig. 9, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.

The method of the embodiment shown in fig. 9 provided by the embodiment of the present application, the execution body may be a second network device. In the embodiment of the present application, a method for executing the embodiment shown in fig. 9 by the second network device is taken as an example, and the second network device provided by the embodiment of the present application is described.

The second network device includes:

It should be noted that, the second network device provided in the embodiment of the present invention is a device capable of executing the SL measurement configuration method, and all the implementation manners in the embodiment of the SL measurement configuration method are applicable to the second network device, and the same or similar beneficial effects can be achieved. In order to avoid repetitive description, the present embodiment is not described in detail.

The second network device provided by the embodiment of the present application can implement each process implemented by the embodiments of the methods of fig. 5 to fig. 9, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.

As shown in fig. 10, the embodiment of the present application further provides a communication device 1000, including a processor 1001 and a memory 1002, where the memory 1002 stores a program or instructions executable on the processor 1001, for example, when the communication device 1000 is a terminal, the program or instructions implement the steps of the method embodiment shown in fig. 5 when executed by the processor 1001, and achieve the same technical effects. When the communication device 1000 is a network side device, the program or the instruction, when executed by the processor 1001, implements the steps of the method embodiment shown in fig. 8 or fig. 9, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

The embodiment of the application also provides a terminal, which comprises a processor and a communication interface, wherein the communication interface is coupled with the processor, and the processor is used for running programs or instructions to realize the steps in the embodiment of the method shown in fig. 5. The terminal embodiment corresponds to the terminal-side method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment, and the same technical effects can be achieved. Specifically, fig. 11 is a schematic diagram of a hardware structure of a terminal for implementing an embodiment of the present application.

The terminal 1100 includes, but is not limited to, at least some of the components of a radio frequency unit 1101, a network module 1102, an audio output unit 1103, an input unit 1104, a sensor 1105, a display unit 1106, a user input unit 1107, an interface unit 1108, a memory 1109, and a processor 1110, etc.

Those skilled in the art will appreciate that the terminal 1100 may further include a power source (e.g., a battery) for supplying power to the respective components, and the power source may be logically connected to the processor 11 through a power management system, so as to perform functions of managing charging, discharging, power consumption management, etc. through the power management system. The terminal structure shown in fig. 11 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine some components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 1104 may include a graphics processing unit (Graphics Processing Unit, GPU) 11041 and a microphone 11042, the graphics processor 11041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 1106 may include a display panel 11061, and the display panel 11061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1107 includes at least one of a touch panel 11071 and other input devices 11072. The touch panel 11071 is also referred to as a touch screen. The touch panel 11071 may include two parts, a touch detection device and a touch controller. Other input devices 11072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In the embodiment of the present application, after receiving the downlink data from the network side device, the radio frequency unit 1101 may transmit the downlink data to the processor 1110 for processing, and in addition, the radio frequency unit 1101 may send the uplink data to the network side device. Typically, the radio frequency unit 1101 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

Memory 1109 may be used to store software programs or instructions and various data. The memory 1109 may mainly include a first memory area storing programs or instructions and a second memory area storing data, wherein the first memory area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 1109 may include volatile memory or nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static random access memory (STATIC RAM, SRAM), dynamic random access memory (DYNAMIC RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate Synchronous dynamic random access memory (Double DATA RATE SDRAM, DDRSDRAM), enhanced Synchronous dynamic random access memory (ENHANCED SDRAM, ESDRAM), synchronous link dynamic random access memory (SYNCH LINK DRAM, SLDRAM), and Direct random access memory (DRRAM). Memory 1109 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

Processor 1110 may include one or more processing units and, optionally, processor 1110 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, etc., and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 1110.

Wherein, the processor 1110 is configured to perform SL measurement when the terminal is in a disconnected state.

A radio frequency unit 1101, configured to send a first message to a first network device;

effective SL measurements;

Information of valid candidate relay devices.

It can be appreciated that the implementation process of each implementation manner mentioned in this embodiment may refer to the related description of the method embodiment in fig. 5, and achieve the same or corresponding technical effects, which are not repeated herein for avoiding repetition.

The embodiment of the application also provides network side equipment, which comprises a processor and a communication interface, wherein the communication interface is coupled with the processor, and the processor is used for running programs or instructions to realize the steps of the method embodiment shown in fig. 8 or 9. The network side device embodiment corresponds to the network side device method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the network side device embodiment, and the same technical effects can be achieved.

Specifically, the embodiment of the application also provides network side equipment. As shown in fig. 12, the network-side apparatus 1200 includes an antenna 121, a radio frequency device 122, a baseband device 123, a processor 124, and a memory 125. The antenna 121 is connected to a radio frequency device 122. In the uplink direction, the radio frequency device 122 receives information via the antenna 121, and transmits the received information to the baseband device 123 for processing. In the downlink direction, the baseband device 123 processes information to be transmitted, and transmits the processed information to the radio frequency device 122, and the radio frequency device 122 processes the received information and transmits the processed information through the antenna 121.

The method performed by the network side device in the above embodiment may be implemented in the baseband apparatus 123, where the baseband apparatus 123 includes a baseband processor.

The baseband apparatus 123 may, for example, include at least one baseband board, where a plurality of chips are disposed, as shown in fig. 12, where one chip, for example, a baseband processor, is connected to the memory 125 through a bus interface, so as to call a program in the memory 125 to perform the operation of the first network device or the second network device shown in the above method embodiment.

The network-side device may also include a network interface 126, such as a common public radio interface (Common Public Radio Interface, CPRI).

Specifically, the network side device 1200 of the embodiment of the present invention further includes instructions or programs stored in the memory 125 and capable of running on the processor 124, and the processor 124 invokes the instructions or programs in the memory 125 to execute the method executed by each module shown in fig. 8 or fig. 9, and achieve the same technical effects, so that repetition is avoided and therefore a description thereof is omitted.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored in the readable storage medium, where the program or the instruction implements each process of the method embodiment shown in fig. 5 when being executed by a processor, or where the program or the instruction implements each process of the method embodiment shown in fig. 8 when being executed by a processor, or where the program or the instruction implements each process of the method embodiment shown in fig. 9 when being executed by a processor, and the same technical effects can be achieved, and in order to avoid repetition, a detailed description is omitted herein.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc. In some examples, the readable storage medium may be a non-transitory readable storage medium.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions, implement each process of the method embodiment shown in fig. 5, implement each process of the method embodiment shown in fig. 8, or implement each process of the method embodiment shown in fig. 9, and achieve the same technical effects, so that repetition is avoided and no further description is given here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

Embodiments of the present application further provide a computer program/program product stored in a storage medium, the computer program/program product being executed by at least one processor to implement the respective processes of the method embodiment shown in fig. 5, or the computer program/program product being executed by at least one processor to implement the respective processes of the method embodiment shown in fig. 8, or the computer program/program product being executed by at least one processor to implement the respective processes of the method embodiment shown in fig. 9, and achieving the same technical effects, which are not repeated herein.

The embodiment of the application also provides a wireless communication system, which comprises a terminal and network side equipment, wherein the terminal can be used for executing the steps of the side link SL measurement reporting method, and the network side equipment can be used for executing the steps of the side link SL measurement reporting or side link SL measurement configuration method.

The embodiment of the application also provides a wireless communication system, which comprises a terminal, a first network device and a second network device, wherein the terminal can be used for executing the step of reporting the side link SL measurement, the first network device can be used for executing the step of the side link SL measurement reporting method, and the second network device can be used for executing the step of the side link SL measurement configuration method.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the description of the embodiments above, it will be apparent to those skilled in the art that the above-described example methods may be implemented by means of a computer software product plus a necessary general purpose hardware platform, but may also be implemented by hardware. The computer software product is stored on a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes instructions for causing a terminal or network side device to perform the methods according to the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms of embodiments may be made by those of ordinary skill in the art without departing from the spirit of the application and the scope of the claims, which fall within the protection of the present application.

Claims

1. A side link SL measurement reporting method, characterized by comprising:

The terminal performs SL measurement in a non-connected state;

The terminal sends a first message to the first network device;

The first message includes first information or a first indication, the first indication is used to indicate that the terminal has the first information, and the first information includes at least one of the following:

Valid SL measurement results;

Information about valid candidate relay devices.

2. The method according to claim 1, wherein the terminal sends a first message to the first network device, comprising:

The terminal sends a first message to the first network device when a first preset condition is met;

The first preset condition includes at least one of the following:

The terminal has first information;

The service node of the terminal supports layer 2 U2N relay

The service node of the terminal supports multi-path relay;

The service node of the terminal supports SL measurement in a non-connected state.

3. The method according to claim 1 or 2, wherein the terminal sends a first message to the first network device, comprising:

The terminal sends a first message to a first network device during the execution of the RRC connection establishment process; the first message includes the first indication;

Alternatively, the terminal sends a first message to the first network device during the execution of the RRC connection recovery process; the first message includes the first information or the first indication.

4. The method according to any one of claims 1 to 3, wherein the first message includes first information, and before the terminal sends the first message to the first network device, the method further includes:

receiving a first request message sent by the first network device; the first request message including a second indication for requesting to report the first information;

The terminal sending a first message to the first network device includes:

The terminal sends a first message to the first network device in response to the first request message.

5. The method according to any one of claims 1 to 3, wherein the first message includes a first indication, and after the terminal sends the first message to the first network device, the method further includes:

The terminal receives a second request message sent by the first network device, where the second request message includes a third indication for requesting to report the first information;

The second message includes the first information.

6. The method according to any one of claims 1 to 4, characterized in that the method further comprises:

The terminal receives a third message sent by the first network device, where the third message is used to indicate a target relay device;

The terminal establishes a non-direct connection path between the terminal and the target relay device.

7. The method according to any one of claims 1 to 6, characterized in that before the terminal performs the side link SL measurement in a non-connected state, the method further comprises:

The terminal receives SL measurement configuration information sent by the second network device;

The SL measurement configuration information is sent via at least one of a system message and an RRC connection release message;

The SL measurement configuration information is used by the terminal to perform the side link SL measurement in a non-connected state.

8. The method according to claim 7 is characterized in that the SL measurement configuration information includes at least one of the following: a frequency of SL measurement, a SL measurement amount, and a SL measurement reporting threshold.

9. The method according to claim 8 is characterized in that the SL measurement configuration information in the RRC connection release message also includes at least one of the following information: a valid area for SL measurement, a valid object for SL measurement, and a valid duration for SL measurement.

10. The method according to any one of claims 7 to 9, wherein the terminal performs SL measurement, comprising:

In a case where both the system message and the RRC connection release message received by the terminal include SL measurement configuration information of a target type, SL measurement is performed according to the measurement configuration information corresponding to the SL measurement configuration information of the target type in the RRC connection release message.

11. The method according to any one of claims 8 to 10, wherein when the SL measurement configuration information includes a frequency point for SL measurement, the terminal performs side link SL measurement, comprising:

The terminal indicates to an upper layer of the terminal that a SL discovery process is triggered;

The terminal performs SL measurement on the candidate relay devices determined by the SL discovery process.

12. The method according to any one of claims 1 to 11, characterized in that the method further comprises: the terminal suspending or stopping SL measurement when a second preset condition is met;

The second preset condition includes at least one of the following:

The timer corresponding to the validity period of the SL measurement times out;

The candidate relay device determined in the SL discovery process is not a valid object for SL measurement;

The cell reselected by the terminal does not support layer 2 U2N relay;

The cell reselected by the terminal does not support multipath relay;

The cell reselected by the terminal does not support SL measurement in a non-connected state.

13. The method according to any one of claims 1 to 12, characterized in that

The valid SL measurement result includes at least one of the following: a SL measurement result greater than or equal to a first preset threshold, a SL measurement result that conforms to a valid area, and a SL measurement result that conforms to a valid object;

Alternatively, the valid candidate relay device satisfies at least one of the following conditions:

A relay device whose SL link quality with the terminal is greater than or equal to a second preset threshold;

The same relay device as the serving base station of the terminal;

Relay equipment that is the same as or equivalent to the public land mobile network PLMN serving the terminal;

A relay device whose Uu link quality with a serving base station is greater than or equal to a third preset threshold;

Relay equipment that meets the valid object of SL measurement.

14. The method according to claim 13 is characterized in that the SL measurement result includes at least one of the following: a reference signal received power SD-RSRP measurement result of a side link discovery message, a side link reference signal received power SL-RSRP measurement result, a relay device identifier, and a relay device service cell identifier.

15. A SL measurement reporting method, comprising:

The first network device receives a first message sent by the terminal;

The first message includes first information or a first indication, and the first indication is used to indicate that the terminal has the first information;

The first information includes at least one of the following: a valid SL measurement result; information of a valid candidate relay device;

The valid SL measurement result is obtained by the terminal performing SL measurement in a non-connected state;

The information of the valid candidate relay device is obtained by the terminal performing SL measurement in a non-connected state.

16. The method according to claim 15, wherein the first network device receives the first message sent by the terminal, comprising at least one of the following:

The first network device receives a first message sent by the terminal during the execution of the RRC connection establishment process; the first message includes the first indication;

Alternatively, the first network device receives a first message sent by the terminal during the execution of the RRC connection recovery procedure; the first message includes the first information or the first indication.

17. The method according to claim 15 or 16, characterized in that, when the first message includes the first information, before the first network device receives the first message sent by the terminal, the method further comprises:

The first network device sends a first request message to the terminal; the first request message includes a second indication for requesting to report the first information;

The first network device receiving a first message sent by a terminal includes: the first network device receiving a first message sent by the terminal in response to the first request message.

18. The method according to claim 15 or 16, characterized in that, in the case where the first message includes the first indication, after the first network device receives the first message sent by the terminal, the method further comprises:

A second request message sent by the first network device to the terminal, the second request message including a third indication for requesting to report the first information;

The first network device receives a second message sent by the terminal in response to the second request message;

The second message includes the first information.

19. The method according to any one of claims 15 to 18, characterized in that the method further comprises:

The first network device sends a third message to the terminal, where the third message indicates a target relay device.

20. A SL measurement configuration method, comprising:

The second network device sends SL measurement configuration information to the terminal;

The SL measurement configuration information is used by the terminal to perform the SL measurement in a non-connected state.

21. The method according to claim 20, characterized in that the SL measurement configuration information includes at least one of the following: a frequency of SL measurement, a SL measurement amount, and a SL measurement reporting threshold.

22. The method according to claim 21 is characterized in that the SL measurement configuration in the RRC connection release message further includes at least one of the following information: a valid area for SL measurement, a valid object for SL measurement, and a valid duration for SL measurement.

23. A terminal, comprising:

A measurement module, used to perform SL measurement in a non-connected state;

The first message includes first information or a first indication, the first indication is used to indicate that the terminal has the first information, and the first information includes at least one of the following: a valid SL measurement result; information of a valid candidate relay device.

24. A first network device, comprising:

A first receiving module, used to receive a first message sent by a terminal;

25. A second network device, characterized in that:

A second sending module, configured for the second network device to send SL measurement configuration information to the terminal;

26. A terminal, characterized in that it comprises a processor and a memory, wherein the memory stores a program or instruction that can be executed on the processor, and when the program or instruction is executed by the processor, the steps of the SL measurement reporting method as described in any one of claims 1 to 14 are implemented.

27. A network side device, characterized in that it comprises a processor and a memory, the memory storing a program or instruction that can be run on the processor, and the program or instruction, when executed by the processor, implements the steps of the SL measurement reporting method as described in any one of claims 15 to 19, or, when executed by the processor, implements the steps of the SL measurement configuration method as described in any one of claims 20 to 22.

28. A readable storage medium, characterized in that the readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, it implements the SL measurement reporting method as described in any one of claims 1-14, or implements the steps of the SL measurement reporting method as described in any one of claims 15 to 19, or implements the steps of the SL measurement configuration method as described in any one of claims 20 to 22.