Communication method, device and system in direct link relay scene and storage medium

Abstract

The invention provides a communication method, device and system in a straight-through link relay scene and a storage medium, and relates to the field of wireless communication and terminals. The method comprises: when a UE is used as a receiving UE, sending a first message to a first serving base station, the first serving base station being a serving base station for sending the UE, the first message comprising SL DRX auxiliary information; and the UE receives a second message sent by the first service base station, the second message comprising DRX configuration information of the SL unicast communication between the terminals, and the DRX configuration information of the SL unicast communication between the terminals, and the second message is determined according to the SL DRX auxiliary information. According to the invention, unnecessary signaling interaction among the remote UE, the relay UE and the service base station can be reduced, the signaling overhead is saved, and the energy consumption of the terminal is further saved.

Description

Technical Field

[0001] The present disclosure relates to the field of wireless communications and terminals, and in particular to a communication method, device, system and storage medium in a direct link relay scenario. Background Art

[0002] NR (New Radio) SL (Sidelink) technology mainly implements V2X (vehicle to everything) related road safety services. On this basis, in order to further expand the coverage of the network and the direct link and improve power efficiency, a relay technology based on the NR direct link (NR sidelink Relay) is proposed, and U2N Relay (UE-to-Network Relay) technology is introduced. The remote UE (User Equipment) can communicate with the base station through the relay UE.

[0003] In order to further improve network throughput and reliability, multi-path relay technology is proposed. Figure 1 As shown, the remote UE 101 and the base station 102 communicate directly through the Uu interface, which is called a direct path; the remote UE 101 communicates with the network side through the PC5 interface between it and the relay UE 103 and the Uu interface between the relay UE 103 and the network, which is called an indirect path. In a multi-path relay scenario, the UE can communicate with the base station through a direct path and an indirect path or multiple indirect paths, thereby improving service rate and reliability.

[0004] Technologies such as U2N relay and multi-path relay can help operators expand network coverage, fill coverage gaps, and improve throughput and reliability, and have broad application prospects. However, from the perspective of the terminal, sidelink relay technology will significantly increase the energy consumption of relay UEs, thereby reducing the enthusiasm of UEs to serve as relay nodes. This is also one of the reasons for the slow commercialization of sidelink relay technology. In order to promote the implementation and commercialization of sidelink relay technology, it is necessary to solve the energy-saving problem in the sidelink relay scenario.

[0005] In order to reduce the energy consumption of the terminal, the SL DRX (Discontinuous Reception) mechanism is proposed to achieve better energy saving effect by coordinating the SL DRX and Uu DRX configurations of the terminal. In the SL DRX mechanism, the SL DRX configuration between the sending UE (Tx UE) or the serving base station of the Tx UE determines the SL DRX configuration with the receiving UE (Rx UE), and the Rx UE can provide auxiliary information to the Tx UE to help the Tx UE make a decision. For mode1 (mode 1) Tx UEs within the coverage of the cellular network and in the connected state, the Tx UE will report the auxiliary information provided by the Rx UE to its serving base station, and the serving gNB (base station) will instruct the Tx UE to decide the SL DRX configuration through RRC (Radio Resource Control) signaling. For Tx UEs outside the coverage or in mode2 (mode 2), the SL DRX configuration is directly determined based on the auxiliary information provided by the Rx UE. Mode 1 is the direct link resource allocation mode 1, in which the network allocates transmission resources for the direct link to the terminal; mode 2 is the direct link resource allocation mode 2, in which the terminal independently selects the direct link transmission resources.

[0006] In the related technology, only the SL DRX configuration between two terminals and the Uu DRX between two nodes and their respective serving base stations are considered. In particular, for mode 2, the alignment of sidelink DRX and Uu DRX is achieved through the decision of the terminal. Since multiple signaling interactions are required to be reported again, unnecessary signaling overhead is caused, which increases the energy consumption of the terminal. Summary of the invention

[0007] A technical problem to be solved by the present disclosure is to provide a communication method, device, system and storage medium in a direct link relay scenario, which can reduce terminal energy consumption.

[0008] According to one aspect of the present disclosure, a communication method in a direct link relay scenario is proposed, including: when a user equipment UE acts as a receiving UE, it sends a first message to a first service base station, wherein the first service base station is a service base station of the sending UE, and the first message includes direct link SL discontinuous reception DRX auxiliary information; and the UE receives a second message sent by the first service base station, wherein the second message includes DRX configuration information of SL unicast communication between terminals, and the DRX configuration information of SL unicast communication between terminals is determined according to the SL DRX auxiliary information.

[0009] In some embodiments, the second message also includes air interface DRX configuration information, wherein the air interface DRX configuration information is determined according to DRX configuration information of SL unicast communication between terminals.

[0010] In some embodiments, the UE sending a first message to the first serving base station includes: the UE with SL DRX capability is in user equipment to network U2N relay or multi-path communication, and expects to perform SL DRX operation or the UE's preferred SL DRX information changes, sending the first message to the first serving base station.

[0011] In some embodiments, the SL DRX assistance information includes at least one set of semi-static SL DRX parameter information for unicast communication, wherein each set of semi-static SL DRX parameter information in the at least one set includes at least one of a SL DRX duration timer length, a SL DRX cycle start offset, and a SL DRX time slot offset.

[0012] In some embodiments, when the UE completes the configuration of the SL DRX configuration information, it sends a confirmation configuration completion message; and when the UE, as a receiving UE, rejects the SL DRX configuration information in one or more directions, it sends a SL DRX configuration rejection indication, wherein the SL DRX configuration rejection indication includes the identifier of the sending UE in one or more directions or the SL direction index.

[0013] In some embodiments, the UE sending the first message to the first service base station includes at least one of the following: the UE sending the first message directly to the first service base station as a receiving UE; the UE sending the first message to the first service base station through a sending UE as a receiving UE; the UE sending the first message to the first service base station through a second service base station as a receiving UE, wherein the second service base station is the service base station of the receiving UE.

[0014] In some embodiments, when the UE sends a first message to the first service base station via the second service base station as a receiving UE, the UE receiving the second message sent by the first service base station includes: the UE receives the second message sent by the first service base station via the second service base station as a receiving UE.

[0015] In some embodiments, the second message also includes air interface DRX configuration information, wherein when the second serving base station determines that the air interface DRX configuration of the UE needs to be adjusted based on the DRX configuration information of the SL unicast communication between terminals, the air interface DRX configuration information is carried in the second message and sent to the UE.

[0016] In some embodiments, when the UE acts as a receiving UE and sends a first message to the first service base station via the second service base station, the UE receives a third message sent by the second service base station, wherein the third message includes a reconfiguration air interface DRX configuration message, and the third message is determined by the second service base station based on the DRX configuration information of the terminal-to-terminal SL unicast communication sent by the first service base station.

[0017] In some embodiments, the UE receiving the second message sent by the first serving base station includes: the UE as a receiving UE receives the second message sent by the first serving base station through a sending UE, wherein the UE as a receiving UE is configured according to the second message and then sends a feedback message to the sending UE.

[0018] In some embodiments, when the feedback message is a confirmation configuration completion message, the confirmation configuration completion message includes DRX configuration information for SL unicast communication between terminals, and the communication method also includes: after the UE completes the SL DRX configuration according to the DRX configuration information for SL unicast communication between terminals, the UE sends a confirmation configuration completion message to the first service base station, and after receiving the air interface DRX configuration information sent by the first service base station, the UE completes the air interface DRX configuration and sends a confirmation configuration completion message to the first service base station.

[0019] In some embodiments, the UE receiving the second message sent by the first serving base station includes: the UE directly receives the second message sent by the first serving base station as a receiving UE, wherein the UE sends a feedback message to the first serving base station after being configured according to the second message.

[0020] In some embodiments, the SL DRX auxiliary information is configured to indicate the semi-static SL DRX parameter information preferred by the UE as a receiving UE when the remote UE and the relay UE perform SL unicast communication, wherein in the uplink direction, the remote UE acts as a sending UE and the relay UE acts as a receiving UE; and in the downlink direction, the remote UE acts as a receiving UE and the relay UE acts as a sending UE.

[0021] In some embodiments, the DRX configuration information for SL unicast communication between terminals includes a SL direction index and SL DRX configuration information, wherein the SL direction index is used to indicate the SL unicast communication direction corresponding to the SL DRX configuration; and the SL DRX configuration information includes at least one of the SL DRX duration timer length, the SL DRX inactivity timer length, the SL DRX HARQ RTT timer length, the SL DRX retransmission timer length, the SL DRX cycle start offset, and the SL DRX time slot offset.

[0022] In some embodiments, the second message further includes a SL DRX configuration indication, wherein the SL DRX configuration indication is configured to indicate that when the UE acts as a sending UE, there is no need to send SL DRX configuration information to a receiving UE.

[0023] In some embodiments, the first message is carried in a radio resource control RRC signaling message or a SL terminal information new air interface message or an Xn message; the second message is carried in an RRC signaling or an Xn message.

[0024] In some embodiments, the SL DRX configuration rejection indication is carried in a radio resource control RRC signaling message or an Xn message.

[0025] According to another aspect of the present disclosure, a communication method in a direct link relay scenario is also proposed, including: a first service base station receives a user equipment UE as a first message sent when the user equipment UE is a receiving UE, wherein the first service base station is a service base station for a sending UE, and the first message includes direct link SL discontinuous reception DRX auxiliary information; the first service base station determines a second message based on the SL DRX auxiliary information, wherein the second message includes DRX configuration information for SL unicast communication between terminals; and the first service base station sends the second message to the receiving UE and the sending UE.

[0026] In some embodiments, the second message also includes air interface DRX configuration information, wherein the air interface DRX configuration information is determined according to DRX configuration information of SL unicast communication between terminals.

[0027] In some embodiments, the first service base station sends the second message to the receiving UE and the sending UE, including at least one of the following: the first service base station directly sends the second message to the receiving UE and the sending UE; the first service base station sends the second message to the sending UE, wherein the sending UE sends the second message to the receiving UE.

[0028] In some embodiments, the first service base station receives the first message sent by the receiving UE, including: the first service base station receives the first message sent by the receiving UE through the second service base station, wherein the second service base station is the service base station of the receiving UE; the first service base station sends the second message to the receiving UE and the sending UE, including: the first service base station sends the second message to the receiving UE through the second service base station, and after receiving the feedback message sent by the receiving UE through the second service base station, sends the second message to the sending UE.

[0029] In some embodiments, the first service base station sends DRX configuration information of SL unicast communication between terminals to the second service base station, wherein the second service base station is a service base station of a receiving UE; the second service base station generates a reconfiguration air interface DRX configuration message based on the DRX configuration information of SL unicast communication between terminals, and sends the reconfiguration air interface DRX configuration message to the receiving UE, wherein the receiving UE is a remote UE in the downlink direction.

[0030] In some embodiments, the SL DRX auxiliary information is configured to indicate the semi-static SL DRX parameter information preferred by the UE as a receiving UE when the remote UE and the relay UE perform SL unicast communication, wherein in the uplink direction, the remote UE acts as a sending UE and the relay UE acts as a receiving UE; and in the downlink direction, the remote UE acts as a receiving UE and the relay UE acts as a sending UE.

[0031] In some embodiments, the DRX configuration information for SL unicast communication between terminals includes a SL direction index and SL DRX configuration information, wherein the SL direction index is used to indicate the SL unicast communication direction corresponding to the SL DRX configuration; and the SL DRX configuration information includes at least one of the SL DRX duration timer length, the SL DRX inactivity timer length, the SL DRX HARQ RTT timer length, the SL DRX retransmission timer length, the SL DRX cycle start offset, and the SL DRX time slot offset.

[0032] In some embodiments, the first serving base station sends a SL DRX configuration indication to a receiving UE and a sending UE, wherein the SL DRX configuration indication is configured to indicate that when the UE acts as a sending UE, there is no need to send SL DRX configuration information to the receiving UE.

[0033] In some embodiments, the SL DRX assistance information includes at least one set of semi-static SL DRX parameter information for unicast communication, wherein each set of semi-static SL DRX parameter information in the at least one set includes at least one of a SL DRX duration timer length, a SL DRX cycle start offset, and a SL DRX time slot offset.

[0034] According to another aspect of the present disclosure, a user equipment is also proposed, including: a first sending module, configured to send a first message to a first service base station when acting as a receiving UE, wherein the first service base station is a service base station for sending the UE, and the first message includes direct link SL discontinuous reception DRX auxiliary information; and a first receiving module, configured to receive a second message sent by the first service base station, wherein the second message includes DRX configuration information for SL unicast communication between terminals, and the DRX configuration information for SL unicast communication between terminals is determined based on the SL DRX auxiliary information.

[0035] According to another aspect of the present disclosure, a user equipment is also proposed, including: a memory; and a processor coupled to the memory, wherein the processor is configured to execute the above communication method based on instructions stored in the memory.

[0036] According to another aspect of the present disclosure, a base station is also proposed, including: a second receiving module, configured to receive a first message sent by a user equipment UE as a receiving UE, wherein the first serving base station is a serving base station for a sending UE, and the first message includes discontinuous reception DRX auxiliary information of a direct link SL; a second processing module, configured to determine DRX configuration information of SL unicast communication between terminals based on the SL DRX auxiliary information; and a second sending module, configured to send the DRX configuration information of SL unicast communication between terminals to the receiving UE and the sending UE.

[0037] According to another aspect of the present disclosure, a base station is further proposed, including: a memory; and a processor coupled to the memory, wherein the processor is configured to execute the above-mentioned method for activating a secondary cell based on instructions stored in the memory.

[0038] According to another aspect of the present disclosure, a communication system in a direct link relay scenario is also proposed, including: the above-mentioned user equipment, wherein the user equipment includes a remote user equipment UE and at least one relay UE; and at least one of the above-mentioned base stations.

[0039] According to another aspect of the present disclosure, a non-transitory computer-readable storage medium is also provided, on which computer program instructions are stored, and when the instructions are executed by a processor, the communication method as described above is implemented.

[0040] In the disclosed embodiment, when the UE acts as a receiving UE, it reports SL DRX auxiliary information to the serving base station of the sending UE. After the serving base station of the sending UE determines the SL DRX configuration information, it sends the SL DRX configuration information to the UE, thereby reducing unnecessary signaling interactions between the remote UE, relay UE and serving base station, saving signaling overhead, and thereby saving terminal energy consumption.

[0041] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0043] The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0044] Figure 1 It is a schematic diagram of the structure of some embodiments of multi-path relay scenarios;

[0045] Figure 2 A flowchart of some embodiments of the communication method in the through link relay scenario disclosed in the present invention;

[0046] Figure 3 Schematic diagram of the flow of other embodiments of the communication method in the direct link relay scenario of the present disclosure;

[0047] Figure 4 Schematic diagram of the flow of other embodiments of the communication method in the direct link relay scenario of the present disclosure;

[0048] Figure 5Schematic diagram of the flow of other embodiments of the communication method in the direct link relay scenario of the present disclosure;

[0049] Figure 6 Schematic diagram of the flow of other embodiments of the communication method in the direct link relay scenario of the present disclosure;

[0050] Figure 7 Schematic diagram of the flow of other embodiments of the communication method in the direct link relay scenario of the present disclosure;

[0051] Figure 8 Schematic diagram of the flow of other embodiments of the communication method in the direct link relay scenario of the present disclosure;

[0052] Fig. 9 Schematic diagram of the flow of other embodiments of the communication method in the direct link relay scenario of the present disclosure;

[0053] Fig.10 Schematic diagram of the flow of other embodiments of the communication method in the direct link relay scenario of the present disclosure;

[0054] Fig.11 Schematic diagram of the flow of other embodiments of the communication method in the direct link relay scenario of the present disclosure;

[0055] Fig.12 Schematic diagram of the flow of other embodiments of the communication method in the direct link relay scenario of the present disclosure;

[0056] Fig.13 Schematic diagram of the flow of other embodiments of the communication method in the direct link relay scenario of the present disclosure;

[0057] Fig.14 It is a schematic diagram of the structure of some embodiments of the user equipment disclosed in the present invention;

[0058] Fig.15 It is a schematic diagram of the structure of some other embodiments of the user equipment disclosed in the present invention;

[0059] Fig.16 A schematic diagram of the structure of some embodiments of the base station disclosed in the present invention; and

[0060] Fig.17 It is a schematic diagram of the structure of other embodiments of the base station disclosed in the present invention. DETAILED DESCRIPTION

[0061] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure unless otherwise specifically stated.

[0062] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0063] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0064] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0065] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0066] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0067] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0068] In the U2N relay scenario, the DRX configuration coordination problem between the remote UE, relay UE and gNB needs to be considered. Therefore, it is currently being discussed how to further enhance the signaling between gNB and relay UE based on the existing SL DRX mechanism to assist the relay UE in making better decisions on the DRX configuration of the remote UE and better save terminal energy consumption. In addition, due to the introduction of multi-path relay scenarios, it is also necessary to consider the DRX configuration coordination problem between direct paths and indirect paths, as well as multiple indirect paths, so as to reduce terminal energy consumption and solve the pain points of SL relay technology implementation.

[0069] The UE disclosed in the present invention, also known as a terminal or terminal device, is a device with wireless transceiver function, which can communicate with one or more CNs (core networks) via access network devices in (R)AN ((radio)access network). It can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface, such as on a ship; it can also be deployed in the air, for example, on an airplane, a balloon or a satellite. UE can be a smart watch, an industrial sensor, a mobile phone, a tablet computer, a computer with wireless transceiver function, a VR (virtual reality) terminal device, an AR (Augmented Reality) terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. The embodiments of the present disclosure do not limit the UE.

[0070] In this document, the term base station has the full breadth of its usual meaning and includes at least a wireless communication station that is part of a wireless communication system or radio system to facilitate communication. A base station is, for example, a macro base station, a micro base station (also called a small station), a home base station (e.g., home evolved NodeB, or home Node B, HNB), etc.

[0071] Figure 2 The present invention is a flowchart of some embodiments of the communication method in the direct link relay scenario of the present invention.

[0072] In step 210, the UE, when acting as a receiving UE, sends a first message to a first serving base station, wherein the first serving base station is a serving base station of the sending UE, and the first message includes SL DRX auxiliary information.

[0073] In this step, the receiving UE reports its capability, and if the SL DRX function is supported, the SL DRX auxiliary information is reported to the serving base station.

[0074] For example, the receiving UE sends RRC signaling to the first server to indicate whether the receiving UE supports the SL DRX function. If supported, the SL DRX auxiliary information is sent to the first serving base station.

[0075] The RRC signaling may introduce a new message to send the SL DRX auxiliary information, or may reuse the existing RRC signaling, such as the SidelinkUEInformationNR message, to implement the sending of the SL DRX auxiliary information.

[0076] In some embodiments, the receiving UE and the sending UE may share a base station or may have different service base stations. When the service base station of the receiving UE is the same as the base station of the sending UE, if the receiving UE communicates directly with the first service base station through the Uu interface, the SL DRX auxiliary information may be sent directly to the first service base station. If the receiving UE communicates with the sending UE through the PC5 interface and the sending UE communicates with the first service base station through the Uu interface, the receiving UE sends the SL DRX auxiliary information to the first service base station through the sending UE. Alternatively, if the first service base station is not the service base station of the receiving UE, the receiving UE sends the SL DRX auxiliary information to the first service base station through the second service base station, wherein the second service base station is the service base station of the receiving UE.

[0077] In some embodiments, the SL DRX auxiliary information is used to indicate the semi-static SL DRX parameter information preferred by the UE when the UE is a receiving UE during SL unicast communication, and to assist the base station in deciding the SL DRX configuration information. The semi-static SL DRX parameter information preferred by the receiving UE is also the semi-static SL DRX parameter information required by the receiving UE.

[0078] When a receiving UE with SL DRX capability is in U2N relay or multi-path communication and expects to perform SL DRX operation or the SL DRX information preferred by the receiving UE changes, SL DRX assistance information is sent to the first serving base station.

[0079] In some embodiments, the SL DRX auxiliary information includes at least one set of semi-static SL DRX parameter information for unicast communication, wherein each set of semi-static SL DRX parameter information in the at least one set includes at least one of a SL DRX duration timer length, a SL DRX cycle start offset, and a SL DRX time slot offset.

[0080] In some embodiments, the receiving UE is a remote UE or a relay UE. In the uplink direction, the remote UE acts as a sending UE and the relay UE acts as a receiving UE; and in the downlink direction, the remote UE acts as a receiving UE and the relay UE acts as a sending UE.

[0081] In step 220, the UE receives a second message sent by the first serving base station, wherein the second message includes DRX configuration information for SL unicast communication between terminals, and the DRX configuration information for SL unicast communication between terminals is determined according to the SL DRX auxiliary information.

[0082] In some embodiments, the serving base station of the sending UE determines the SL DRX configuration in the direction related to the SL unicast communication between the relay UE and the remote UE based on the SL DRX auxiliary information reported by the receiving UE, and sends RRC signaling to the sending UE and receiving UE in the relevant direction respectively, indicating the DRX configuration information of the SL unicast communication in the relevant direction.

[0083] In some embodiments, the DRX configuration information for SL unicast communication between terminals includes a SL direction index and SL DRX configuration information, wherein the SL direction index is used to indicate the SL unicast communication direction corresponding to the SL DRX configuration; the SL DRX configuration information includes at least one of the SL DRX duration timer length, the SL DRX inactivity timer length, the SL DRX HARQ RTT timer length, the SL DRX retransmission timer length, the SL DRX cycle start offset, and the SL DRX time slot offset.

[0084] In some embodiments, the receiving UE performs SL DRX related operations according to the SL DRX configuration information.

[0085] For example, the receiving UE directly receives the second message sent by the first serving base station, wherein the receiving UE sends a feedback message to the first serving base station after being configured according to the second message.

[0086] For example, when the receiving UE sends a first message to the first serving base station through the second serving base station, the receiving UE receives a second message sent by the first serving base station through the second serving base station. After the receiving UE is configured according to the second message, it sends a feedback message to the second serving base station.

[0087] For example, when the receiving UE sends a first message to the first service base station through the sending UE, the receiving UE receives a second message sent by the first service base station through the sending UE, wherein the receiving UE sends a feedback message to the sending UE after being configured according to the second message.

[0088] In some embodiments, upon receiving the UE configuration completion SL DRX configuration information, a confirmation configuration completion message is sent.

[0089] In some embodiments, when a receiving UE rejects SL DRX configuration information in one or more directions, a SL DRX configuration rejection indication is sent, wherein the SL DRX configuration rejection indication includes an identifier of the sending UE in one or more directions or a SL direction index to indicate the SL communication direction corresponding to the rejected SL DRX configuration.

[0090] For example, for the receiving UE, the SL DRX information in the relevant direction configured by the base station can be rejected; if rejected, an indication of rejecting the SL DRX configuration can be added to the RRC message replied to the base station, as well as the ID (Identifier) ​​information of the UE sending in the relevant direction or the SL direction index, indicating the SL communication direction corresponding to the rejected SL DRX configuration.

[0091] In some embodiments, the second message further includes a SL DRX configuration indication, wherein the SL DRX configuration indication is configured to indicate that when the UE acts as a sending UE, there is no need to send SL DRX configuration information to a receiving UE.

[0092] For example, the RRC signaling includes a SL DRX configuration indication, indicating that the sending UE does not need to indicate the SL DRX configuration to the receiving UE, that is, the serving base station directly sends the relevant SL DRX configuration information to the receiving UE; if the RRC signaling does not include this indication, the sending UE still needs to send the SLDRX configuration to the receiving UE through PC5 RRC signaling after receiving the SL DRX configuration information from the serving base station.

[0093] In the above embodiment, the receiving UE reports SL DRX auxiliary information to the serving base station of the sending UE. After the serving base station of the sending UE determines the SL DRX configuration information, it sends the SL DRX configuration information to the receiving UE, thereby reducing unnecessary signaling interactions between the remote UE, relay UE and serving base station, saving signaling overhead, and thereby saving terminal energy consumption.

[0094] Figure 3 The present invention is a flowchart of other embodiments of the communication method in the direct link relay scenario of the present invention.

[0095] In step 310, the receiving UE sends RRC signaling to the serving base station of the sending UE, indicating whether the receiving UE supports the SLDRX function and the SL DRX auxiliary information.

[0096] In some embodiments, if the service base station of the sending UE is also the service base station of the receiving UE, the receiving UE can directly send RRC signaling to the service base station of the sending UE or send RRC signaling to the service base station of the sending UE through a relay UE to indicate the SL DRX information; otherwise, the receiving UE sends an RRC message to its service base station, and the service base station of the receiving UE then sends the relevant SL DRX auxiliary information to the service base station of the sending UE through Xn signaling.

[0097] In some embodiments, the SL DRX auxiliary information indicated by the receiving UE may be a list including one or more sets of semi-static SL DRX parameter information for unicast communication. When multiple sets of semi-static SL DRX parameter information for unicast communication are set, the base station can select the most appropriate parameters from multiple sets of parameters, which facilitates the base station's decision-making.

[0098] Conditions that trigger the relevant terminal node to report SL DRX auxiliary information to its serving base station or the serving base station of the UE in the relevant direction: When the terminal node with SL DRX capability is in U2N relay or multi-path communication, it expects to perform SL DRX operations or its preferred SL DRX information changes.

[0099] In some embodiments, after receiving RRC signaling sent by the UE, if the service base station receiving the RRC signaling is the service base station of the sending UE in the relevant SL communication direction, the SL DRX configuration information is directly determined; if the service base station is not the service base station of the sending UE, the service base station sends Xn signaling to the service base station sending the UE in the relevant direction, including the SL DRX auxiliary information reported by the receiving UE, and the SL DRX configuration is determined by the service base station sending the UE.

[0100] In some embodiments, the Xn signaling may also include at least one of the ID information of the receiving UE and / or the sending UE in the relevant direction, the communication direction indication corresponding to the SLDRX auxiliary information, and the like.

[0101] In step 320, the receiving UE and the sending UE receive the DRX configuration information of the inter-UE SL unicast communication and the air interface DRX configuration information sent by the serving base station of the sending UE.

[0102] In some embodiments, the air interface DRX configuration information is Uu DRX configuration information.

[0103] The serving base station reconfigures the Uu DRX configuration in the relevant direction according to the SL DRX configuration, tries to ensure that the SL DRX and Uu DRX are aligned, and indicates the new Uu DRX configuration through RRC signaling sent to the sending UE and receiving UE in the relevant direction respectively.

[0104] The service base station in this embodiment can be a service base station for sending UE or a service base station for receiving UE. When the receiving UE needs to interact with the service base station for sending UE through the service base station for receiving UE, the service base station for receiving UE determines that it is necessary to adjust the air interface DRX configuration of the receiving UE based on the DRX configuration information of the inter-terminal SL unicast communication, and carries the air interface DRX configuration information in the second message and sends it to the receiving UE.

[0105] In other embodiments, when the receiving UE sends RRC signaling to the serving base station of the sending UE through the serving base station of the receiving UE, the receiving UE receives a third message sent by its own serving base station, wherein the third message includes a reconfiguration air interface DRX configuration message, and the third message is determined by the serving base station of the receiving UE according to the DRX configuration information of the terminal-to-terminal SL unicast communication sent by the serving base station of the sending UE, and the receiving UE is a remote UE in the downlink direction. After completing the configuration, the receiving UE sends a feedback message to its own serving base station.

[0106] In step 330, the sending UE and the receiving UE are configured according to the instruction of the base station, and perform SL DRX or air interface DRX related operations according to the SL DRX configuration information or the air interface DRX configuration information.

[0107] In some embodiments, after executing relevant configuration, the receiving UE sends a feedback message to the serving base station of the receiving UE or the serving base station of the sending UE.

[0108] In some embodiments, when the receiving UE sends a feedback message to the sending UE, in the case where the feedback message is a confirmation configuration completion message, the confirmation configuration completion message includes DRX configuration information for SL unicast communication between terminals. After the sending UE completes the SL DRX configuration according to the DRX configuration information for SL unicast communication between terminals, it sends a confirmation configuration completion message to the serving base station of the sending UE, and after receiving the air interface DRX configuration information sent by the serving base station of the sending UE, it completes the air interface DRX configuration and sends a confirmation configuration completion message to the serving base station of the sending UE.

[0109] In the above embodiment, the receiving UE sends SL DRX auxiliary information to the base station, and determines the SLDRX parameter configuration based on the decision of the base station, thereby ensuring the alignment of transmission and reception of the direct link and the air interface, shortening the SL DRX and Uu DRX coordination time, and reducing the signaling overhead between the sending UE, the receiving UE and the service base station, thereby maximizing terminal energy consumption.

[0110] Figure 4 The present invention is a flowchart of other embodiments of the communication method in the direct link relay scenario of the present invention.

[0111] In step 410, the first serving base station obtains and receives a first message sent by a UE, wherein the first serving base station is a serving base station that sends the UE, and the first message includes SL DRX auxiliary information.

[0112] In some embodiments, the receiving UE is a remote UE or a relay UE. In the uplink direction, the remote UE acts as a sending UE and the relay UE acts as a receiving UE; and in the downlink direction, the remote UE acts as a receiving UE and the relay UE acts as a sending UE.

[0113] In some embodiments, the receiving UE reports the SL DRX capability to the first server, that is, indicates whether it supports the SL DRX function. If the SL DRX function is supported, the SL DRX auxiliary information is reported. If the SL DRX function is not supported, there is no need to report the SL DRX auxiliary information.

[0114] For example, the receiving UE sends RRC signaling to the first server to indicate whether the receiving UE supports the SL DRX function. If supported, the SL DRX auxiliary information is sent to the first serving base station.

[0115] The RRC signaling may introduce a new message to send the SL DRX auxiliary information, or may reuse the existing RRC signaling, such as the SidelinkUEInformationNR message, to implement the sending of the SL DRX auxiliary information.

[0116] In some embodiments, the receiving UE and the sending UE may share a base station or may have different service base stations. When the service base station of the receiving UE is the same as the base station of the sending UE, if the receiving UE communicates directly with the first service base station through the Uu interface, the SL DRX auxiliary information may be sent directly to the first service base station. If the receiving UE communicates with the sending UE through the PC5 interface and the sending UE communicates with the first service base station through the Uu interface, the receiving UE sends the SL DRX auxiliary information to the first service base station through the sending UE. Alternatively, if the first service base station is not the service base station of the receiving UE, the receiving UE sends the SL DRX auxiliary information to the first service base station through the second service base station, wherein the second service base station is the service base station of the receiving UE.

[0117] In some embodiments, the SL DRX auxiliary information is used to indicate the semi-static SL DRX parameter information preferred by the UE when the UE is a receiving UE during SL unicast communication, and to assist the base station in deciding the SL DRX configuration information. The semi-static SL DRX parameter information preferred by the receiving UE is also the semi-static SL DRX parameter information required by the receiving UE.

[0118] When a receiving UE with SL DRX capability is in U2N relay or multi-path communication and expects to perform SL DRX operation or the SL DRX information preferred by the receiving UE changes, SL DRX assistance information is sent to the first serving base station.

[0119] In some embodiments, the SL DRX auxiliary information includes at least one set of semi-static SL DRX parameter information for unicast communication, wherein each set of semi-static SL DRX parameter information in the at least one set includes at least one of a SL DRX duration timer length, a SL DRX cycle start offset, and a SL DRX time slot offset.

[0120] In step 420, the first serving base station determines a second message according to the SL DRX auxiliary information, wherein the second message includes DRX configuration information for SL unicast communication between terminals.

[0121] In some embodiments, the serving base station of the sending UE determines the SL DRX configuration in the direction related to the SL unicast communication between the relay UE and the remote UE according to the SL DRX auxiliary information reported by the receiving UE.

[0122] For example, after receiving the SL DRX auxiliary information reported by the terminal node, the service base station first determines whether it is the service base station sending the UE in the relevant SL communication direction. If so, the SL DRX configuration is directly determined; if not, Xn signaling is sent to the service base station sending the UE in the relevant direction, including the SL DRX auxiliary information reported by the receiving UE, and the SL DRX configuration is determined by the service base station sending the UE. The Xn signaling may also include at least one of the id information of the receiving UE and / or the sending UE in the relevant direction, the communication direction indication corresponding to the SL DRX auxiliary information, etc.

[0123] In some embodiments, the DRX configuration information for SL unicast communication between terminals includes a SL direction index and SL DRX configuration information, wherein the SL direction index is used to indicate the SL unicast communication direction corresponding to the SL DRX configuration; the SL DRX configuration information includes at least one of the SL DRX duration timer length, the SL DRX inactivity timer length, the SL DRX HARQ RTT timer length, the SL DRX retransmission timer length, the SL DRX cycle start offset, and the SL DRX time slot offset.

[0124] In step 430, the first serving base station sends the second message to the receiving UE and the sending UE.

[0125] The serving base station of the sending UE sends RRC signaling to the sending UE and the receiving UE in the relevant direction respectively, indicating the DRX configuration information of the SL unicast communication in the relevant direction. The sending UE and the receiving UE perform configuration according to the base station instruction, and perform SL DRX related operations according to the SL DRX configuration information to save energy consumption.

[0126] In some embodiments, the first serving base station directly sends the second message to the receiving UE and the sending UE; or the first serving base station sends the second message to the sending UE, wherein the sending UE sends the second message to the receiving UE.

[0127] In the above embodiment, the service base station of the sending UE determines the SLDRX configuration information based on the SL DRX auxiliary information reported by the receiving UE, and sends the SL DRX configuration information to the receiving UE and the sending UE for subsequent communication, thereby reducing unnecessary signaling interactions between the remote UE, relay UE and service base station, saving signaling overhead, and thereby saving terminal energy consumption.

[0128] Figure 5 The present invention is a flowchart of other embodiments of the communication method in the direct link relay scenario of the present invention.

[0129] In step 510, the first serving base station obtains a first message sent by a receiving UE, wherein the first serving base station is a serving base station of a sending UE, and the first message includes whether the receiving UE supports a SL DRX function and SL DRX auxiliary information.

[0130] In some embodiments, the SL DRX auxiliary information indicated by the receiving UE may be a list including one or more sets of semi-static SL DRX parameter information for unicast communication. When multiple sets of semi-static SL DRX parameter information for unicast communication are set, the base station can select the most appropriate parameters from multiple sets of parameters, which facilitates the base station's decision-making.

[0131] In step 520, the first serving base station determines DRX configuration information and air interface DRX configuration information for SL unicast communication between terminals according to the SL DRX auxiliary information.

[0132] The air interface DRX configuration information is determined according to the DRX configuration information of the SL unicast communication between terminals. The air interface DRX configuration information is the Uu DRX configuration information. By reconfiguring the Uu DRX configuration in the relevant direction, the alignment of the SL DRX and the Uu DRX is ensured as much as possible.

[0133] In step 530, the first serving base station sends the DRX configuration information of the inter-UE SL unicast communication and the air interface DRX configuration information to the receiving UE and the sending UE.

[0134] For example, the first serving base station sends RRC signaling to the sending UE and the receiving UE in the relevant direction to indicate the new UuDRX configuration.

[0135] In some embodiments, the receiving UE and the sending UE are configured according to the base station instruction, and perform SL DRX according to the SL DRX configuration information or perform Uu DRX related operations according to the Uu DRX configuration information to save energy consumption. The terminal node feeds back RRC signaling to the base station to confirm that the configuration is complete.

[0136] In some embodiments, the receiving UE may reject the SL DRX information in the relevant direction configured by the base station; if rejected, an indication of rejecting the SL DRX configuration may be added to the RRC message replied to the base station, as well as the ID information of the sending UE in the relevant direction or the SL direction index, indicating the SL communication direction corresponding to the rejected SL DRX configuration.

[0137] In the above embodiment, the serving base station obtains the SL DRX auxiliary information directly reported by the receiving UE, determines the configuration information and the air interface DRX configuration information based on the SLDRX auxiliary information, and sends the configuration information and the air interface DRX configuration information to the sending UE and the receiving UE, so that the sending UE and the receiving UE execute the DRX configuration information and the air interface DRX configuration information, which can shorten the coordination time of SL DRX and Uu DRX and save terminal energy consumption.

[0138] In some embodiments of the present disclosure, the first serving base station sends a SL DRX configuration indication to a receiving UE and a sending UE, wherein the SL DRX configuration indication is configured to indicate that when the UE acts as a sending UE, there is no need to send SL DRX configuration information to the receiving UE, that is, the serving base station directly sends the relevant SL DRX configuration information to the receiving UE.

[0139] If the RRC signaling sent by the serving base station does not include the SL DRX configuration indication, the sending UE sends the SL DRX configuration to the receiving UE through PC5 RRC signaling after receiving the SL DRX configuration information from the serving base station.

[0140] In some embodiments of the present disclosure, the first service base station receives the first message sent by the receiving UE through the second service base station, wherein the second service base station is the service base station of the receiving UE. The first service base station sends the second message to the receiving UE through the second service base station, and after receiving the feedback message sent by the receiving UE through the second service base station, sends the second message to the sending UE.

[0141] For example, the service base station of the sending UE is not the same as the service base station of the receiving UE. The receiving UE first sends the first message to its own service base station, and its own service base station forwards the first message to the service base station of the sending UE. After the service base station of the sending UE generates the second message, it sends the second message to the service base station of the receiving UE, and the service base station of the receiving UE forwards the second message to the receiving UE.

[0142] In some embodiments of the present disclosure, the first service base station sends DRX configuration information of SL unicast communication between terminals to the second service base station; the second service base station generates a reconfiguration air interface DRX configuration message based on the DRX configuration information of SL unicast communication between terminals, and sends the reconfiguration air interface DRX configuration message to a receiving UE, wherein the receiving UE is a remote UE in the downlink direction.

[0143] In this embodiment, the second serving base station generates a reconfiguration air interface DRX configuration message according to the DRX configuration information of the inter-terminal SL unicast communication, so that the remote UE can reconfigure the Uu DRX.

[0144] Figure 6 The flowchart of another embodiment of the communication method in the through link relay scenario of the present disclosure is shown in FIG. In this embodiment, in the same base station U2N relay or multi-path relay scenario, for the uplink direction, the remote UE is a sending UE and the relay UE is a receiving UE.

[0145] In step 610, the relay UE sends a SidelinkUEInformationNR message to the base station, where the message includes SLDRX auxiliary information and reports the SL DRX configuration information preferred by the relay UE as a receiving UE.

[0146] In step 620, the base station determines the SL DRX configuration in the uplink direction between the remote UE and the relay UE according to the SL DRX auxiliary information reported by the relay UE.

[0147] In some embodiments, the base station adjusts the Uu DRX configuration of the remote UE and / or the Uu DRX configuration of the relay UE according to the SL DRX configuration.

[0148] In step 630, the base station sends an RRCReconfiguration message to the relay UE, including SL DRX configuration information, indicating the SL DRX configuration in the uplink direction between the remote UE and the relay UE.

[0149] In some embodiments, the RRCReconfiguration message further includes Uu DRX configuration, instructing the relay UE to reconfigure Uu DRX.

[0150] In step 640, the relay UE receives the instruction from the base station, performs relevant configuration, and sends an RRCReconfigurationComplete message to the base station to confirm that the SL DRX configuration is completed.

[0151] In some embodiments, if the relay UE rejects the SL DRX configuration, the rejection indication information is included in the RRC message. After the base station receives the RRC message fed back by the remote UE, the SL DRX configuration process ends.

[0152] In step 650, the base station sends an RRCReconfiguration message to the remote UE, including SL DRX configuration information, indicating the SL DRX configuration in the uplink direction between the remote UE and the relay UE, and indicating that the remote UE does not need to send the SL DRX configuration in the related direction to the relay UE.

[0153] In some embodiments, the RRCReconfiguration message includes Uu DRX configuration, instructing the remote UE to reconfigure Uu DRX.

[0154] In some embodiments, if there is a direct connection path between the remote UE and the base station, the base station directly sends the RRC message to the remote UE. If there is no direct connection path between the remote UE and the base station, the base station forwards the message to the remote UE via the relay UE.

[0155] In step 660, the remote UE receives the instruction from the base station, performs relevant configuration, and sends an RRCReconfigurationComplete message to the base station to confirm that the relevant configuration is completed.

[0156] In the above embodiment, the relay UE directly sends the preferred SL DRX configuration information to the base station, and the base station determines the SL DRX configuration information and can further determine the Uu DRX configuration. The serving base station directly sends the SL DRX configuration, and the relay UE and the remote UE perform related operations after receiving the indication, thereby reducing unnecessary signaling interactions between the remote UE, the relay UE and the serving base station, saving signaling overhead, shortening the coordination time of SL DRX and Uu DRX, and saving terminal energy consumption.

[0157] Figure 7 The flowchart of another embodiment of the communication method in the through link relay scenario of the present disclosure is shown in FIG. In this embodiment, in the same base station U2N relay or multi-path relay scenario, for the uplink direction, the remote UE is a sending UE and the relay UE is a receiving UE.

[0158] In step 710, the relay UE sends a SidelinkUEInformationNR message to the base station, where the message includes SLDRX auxiliary information and reports the SL DRX configuration information preferred by the relay UE as a receiving UE.

[0159] In step 720, the base station determines the SL DRX configuration in the uplink direction between the remote UE and the relay UE according to the SL DRX auxiliary information reported by the relay UE.

[0160] In some embodiments, the base station adjusts the Uu DRX configuration of the remote UE and / or the Uu DRX configuration of the relay UE according to the SL DRX configuration.

[0161] In step 730, the base station sends an RRCReconfiguration message to the remote UE, including SL DRX configuration information, indicating SL DRX configuration in the uplink direction between the remote UE and the relay UE. In some embodiments, the RRCReconfiguration message includes Uu DRX configuration, indicating that the remote UE reconfigures Uu DRX.

[0162] In some embodiments, if there is a direct connection path between the remote UE and the base station, the base station directly sends the RRC message to the remote UE. If there is no direct connection path between the remote UE and the base station, the base station forwards the message to the remote UE via the relay UE.

[0163] In step 740, the remote UE sends an RRCReconfigurationSidelink message to the relay UE according to the base station configuration, including the SL DRX configuration, indicating the SL DRX configuration in the uplink direction between the remote UE and the relay UE.

[0164] In step 750, the relay UE performs relevant configuration according to the instruction of the remote UE, and sends an RRCReconfigurationCompleteSidelink message to the remote UE to confirm that the SL DRX configuration is completed.

[0165] In some embodiments, if the relay UE rejects the SL DRX configuration, rejection indication information is included in the RRC message.

[0166] In step 760, the remote UE receives the relay UE information, and performs related SL DRX operations according to the instruction of the base station, and sends an RRCReconfigurationComplete message to the base station to confirm that the SL DRX configuration is completed.

[0167] In some embodiments, if the relay UE rejects the SL DRX configuration, the remote UE performs existing operations and sends a SidelinkUEInformationNR message to the base station to instruct the relay UE to reject the SL DRX configuration. The process of this embodiment ends.

[0168] In step 770, if the base station determines that the relay UE Uu DRX configuration needs to be adjusted according to the SL DRX configuration, it sends an RRCReconfiguration message including the Uu DRX configuration to the relay UE to instruct the relay UE to reconfigure the Uu DRX.

[0169] In step 780, the relay UE receives the instruction from the base station, performs relevant configuration, and sends an RRCReconfigurationComplete message to the base station to confirm that the Uu DRX reconfiguration is completed.

[0170] In the above embodiment, the relay UE directly sends the preferred SL DRX configuration information to the base station, and the base station determines the SL DRX configuration information and can further determine the Uu DRX configuration. The serving base station directly sends the SL DRX configuration, and the relay UE and the remote UE perform related operations after receiving the indication, thereby reducing unnecessary signaling interactions between the remote UE, the relay UE and the serving base station, saving signaling overhead, shortening the coordination time of SL DRX and Uu DRX, and saving terminal energy consumption.

[0171] In the base station multipath scenario, the remote UE is connected to the base station through multiple relay UEs, that is, the remote UE has multiple indirect paths and no direct path. For the uplink direction, the SL DRX configuration and coordination process on each indirect path is similar to that of Embodiment 7 and Embodiment 8, and each indirect path is performed independently.

[0172] Figure 8 The present invention is a flowchart of another embodiment of the communication method in the direct link relay scenario of the present invention. In this embodiment, in the same base station U2N relay or multi-path relay scenario, for the downlink direction, the relay UE is the sending UE and the remote UE is the receiving UE.

[0173] In step 810, the remote UE sends a SidelinkUEInformationNR message to the serving base station, including SL DRX auxiliary information, and reports the SL DRX configuration information preferred by the remote UE as a receiving UE.

[0174] In step 820, the base station determines the SL DRX configuration in the downlink direction between the remote UE and the relay UE according to the SL DRX auxiliary information reported by the remote UE.

[0175] In some embodiments, the base station adjusts the Uu DRX configuration of the remote UE and / or the Uu DRX configuration of the relay UE according to the SL DRX configuration.

[0176] In step 830, the base station sends an RRCReconfiguration message to the remote UE, including SL DRX configuration information, indicating the SL DRX configuration in the downlink direction between the remote UE and the relay UE.

[0177] In some embodiments, the RRCReconfiguration message includes Uu DRX configuration, instructing the remote UE to reconfigure Uu DRX.

[0178] In some embodiments, if there is a direct connection path between the remote UE and the base station, the base station can directly send the RRC message to the remote UE; if there is no direct connection path between the remote UE and the base station, the base station forwards the message to the remote UE via the relay UE.

[0179] In step 840, the remote UE receives the instruction from the base station, performs relevant configuration, and sends an RRCReconfigurationComplete message to the base station to confirm that the SL DRX configuration is completed.

[0180] In some embodiments, if the remote UE rejects the SL DRX configuration, the rejection indication information is included in the RRC message. After the base station receives the RRC message fed back by the remote UE, the SL DRX configuration process ends.

[0181] In step 850, the base station sends an RRCReconfiguration message to the relay UE, including SL DRX configuration information, indicating the SL DRX configuration in the downlink direction between the remote UE and the relay UE, and indicating that the relay UE does not need to send the SL DRX configuration in the related direction to the remote UE.

[0182] In some embodiments, the RRCReconfiguration message includes Uu DRX configuration, instructing the relay UE to reconfigure Uu DRX.

[0183] In step 860, the relay UE receives the instruction from the base station, performs relevant configuration, and sends an RRCReconfigurationComplete message to the base station to confirm that the relevant configuration is completed.

[0184] In this embodiment, the remote UE sends the preferred SL DRX configuration information to the base station, and the base station determines the SL DRX configuration information and can further determine the Uu DRX configuration. The serving base station directly sends the SL DRX configuration, and the relay UE and the remote UE perform related operations after receiving the indication, thereby reducing unnecessary signaling interactions between the remote UE, the relay UE and the serving base station, saving signaling overhead, shortening the coordination time of SL DRX and Uu DRX, and saving terminal energy consumption.

[0185] Fig. 9 The flowchart of another embodiment of the communication method in the direct link relay scenario of the present disclosure is shown in FIG. In this embodiment, in the same base station U2N relay or multi-path relay scenario, for the downlink direction, the relay UE is the sending UE and the remote UE is the receiving UE.

[0186] In step 910, the remote UE sends a SidelinkUEInformationNR message to the serving base station, including SL DRX auxiliary information, and reports the SL DRX configuration information preferred by the remote UE as a receiving UE.

[0187] In step 920, the base station determines the SL DRX configuration in the downlink direction between the remote UE and the relay UE according to the SL DRX auxiliary information reported by the remote UE.

[0188] In some embodiments, the base station adjusts the Uu DRX configuration of the remote UE and / or the Uu DRX configuration of the relay UE according to the SL DRX configuration.

[0189] In step 930, the base station sends an RRCReconfiguration message to the relay UE, including SL DRX configuration information, indicating the SL DRX configuration in the downlink direction between the remote UE and the relay UE.

[0190] In some embodiments, the RRCReconfiguration message includes Uu DRX configuration, instructing the relay UE to reconfigure Uu DRX.

[0191] In step 940, the relay UE sends an RRCReconfigurationSidelink message to the remote UE according to the base station configuration, including the SL DRX configuration, indicating the SL DRX configuration in the downlink direction between the remote UE and the relay UE.

[0192] In step 950, the remote UE performs relevant configuration according to the instruction of the relay UE, and sends an RRCReconfigurationCompleteSidelink message to the relay UE to confirm that the SL DRX configuration is completed.

[0193] In some embodiments, if the remote UE rejects the SL DRX configuration, rejection indication information is included in the RRC message.

[0194] In step 960, the relay UE receives the remote UE information, performs relevant SL DRX operations, and sends an RRCReconfigurationComplete message to the base station to confirm that the SL DRX configuration is completed.

[0195] In some embodiments, if the remote UE rejects the SL DRX configuration, the relay UE performs existing operations and sends a SidelinkUEInformationNR message to the base station to indicate that the remote UE rejects the SL DRX configuration. The configuration process ends.

[0196] In step 970, if the base station determines that the remote UE Uu DRX configuration needs to be adjusted according to the SL DRX configuration, it sends an RRCReconfiguration message including the Uu DRX configuration to the remote UE to instruct the remote UE to reconfigure the Uu DRX.

[0197] In some embodiments, if there is a direct connection path between the remote UE and the base station, the base station can directly send the RRC message to the remote UE; if there is no direct connection path between the remote UE and the base station, the base station forwards the message to the remote UE via the relay UE.

[0198] In step 980, the remote UE receives the instruction from the base station, performs relevant configuration, and sends an RRCReconfigurationComplete message to the base station to confirm that the Uu DRX reconfiguration is completed.

[0199] In this embodiment, the remote UE sends the preferred SL DRX configuration information to the base station, and the base station determines the SL DRX configuration information and can further determine the Uu DRX configuration. The serving base station directly sends the SL DRX configuration, and the relay UE and the remote UE perform related operations after receiving the indication, thereby reducing unnecessary signaling interactions between the remote UE, the relay UE and the serving base station, saving signaling overhead, shortening the coordination time of SL DRX and Uu DRX, and saving terminal energy consumption.

[0200] In the base station multi-path scenario, the remote UE is connected to the base station through multiple relay UEs, that is, the remote UE has multiple indirect paths and no direct path. For the downlink direction, multiple relay UEs are all sending UEs, and the remote UE is a receiving UE. The base station can choose to configure each path independently, and the SL DRX configuration and coordination process on each indirect path is similar to that of Example 8 and Example 9.

[0201] Fig.10 The flowchart of another embodiment of the communication method in the through link relay scenario of the present disclosure is shown in FIG. In this embodiment, in the same base station U2N relay or multi-path relay scenario, SL DRX configuration can be performed on both the uplink and downlink directions at the same time.

[0202] In step 1010, the remote UE and the relay UE respectively send SidelinkUEInformationNR messages to the serving base station, including SL DRX auxiliary information, and report the SL DRX configuration information preferred by the remote UE and the relay UE as receiving UEs respectively.

[0203] In step 1020, the base station determines the SL DRX configuration in the uplink direction and the downlink direction between the remote UE and the relay UE according to the SL DRX auxiliary information reported by the remote UE and the relay UE.

[0204] In some embodiments, the base station adjusts the Uu DRX configuration of the remote UE and / or the Uu DRX configuration of the relay UE according to the SL DRX configuration.

[0205] In step 1030, the base station sends an RRCReconfiguration message to the relay UE, including SL DRX configuration information, indicating the SL DRX configuration in the uplink and downlink directions between the remote UE and the relay UE, and indicating that the relay UE does not need to send the SL DRX configuration in the relevant direction to the remote UE.

[0206] In some embodiments, the RRCReconfiguration message includes Uu DRX configuration, instructing the relay UE to reconfigure Uu DRX.

[0207] In step 1040, the relay UE receives the instruction from the base station, performs relevant configuration, and sends an RRCReconfigurationComplete message to the base station to confirm that the relevant configuration is completed.

[0208] In some embodiments, if the relay UE rejects the SL DRX configuration in the relevant direction, the relevant indication information is included in the RRC message. If the relay UE only rejects the SL DRX configuration in a certain direction, the base station can send the SL DRX configuration in the direction in which the relay UE accepts the configuration to the remote UE in step 1050 according to the rejection indication of the relay UE. If the relay UE rejects the SL DRX configuration in all directions, the base station ends the SL DRX configuration process after receiving the RRC message fed back by the relay UE. )

[0209] In step 1050, the base station sends an RRCReconfiguration message to the remote UE, including SL DRX configuration information, indicating the SL DRX configuration in the uplink and downlink directions between the remote UE and the relay UE, and indicating that the remote UE does not need to send the SL DRX configuration in the relevant direction to the relay UE.

[0210] In some embodiments, the RRCReconfiguration message includes Uu DRX configuration, instructing the remote UE to reconfigure Uu DRX.

[0211] In step 1060, the remote UE receives the instruction from the base station, performs relevant configuration, and sends an RRCReconfigurationComplete message to the base station to confirm that the relevant configuration is completed.

[0212] In some embodiments, if the remote UE rejects the SL DRX configuration in the relevant direction, the RRC message includes relevant indication information. The base station also needs to resend the SL DRX configuration information to the relay UE according to the rejection indication of the remote UE.

[0213] In the above embodiment, SL DRX configuration can be performed on both the uplink and downlink directions simultaneously.

[0214] Fig.11 The flowchart of other embodiments of the communication method in the direct link relay scenario of the present disclosure is as follows. In the base station multi-path scenario, the remote UE is connected to the base station through multiple relay UEs, that is, the remote UE has multiple non-direct paths and no direct path. For the downlink direction, the multiple relay UEs are all sending UEs, the remote UE is a receiving UE, and the base station jointly considers multiple paths.

[0215] In step 1110, the remote UE sends a SidelinkUEInformationNR message to the serving base station, including SL DRX auxiliary information, and reports the SL DRX configuration information preferred by the remote UE as a receiving UE;

[0216] In step 1120, the base station determines the SL DRX configurations in the downlink direction between the remote UE and the relay UE1, and between the remote UE and the relay 2, respectively, according to the SL DRX auxiliary information reported by the remote UE.

[0217] In some embodiments, the base station adjusts the Uu DRX configuration of the remote UE and / or the Uu DRX configuration of the relay UE1 and the relay UE2 according to the SL DRX configuration.

[0218] In step 1130, the base station sends an RRCReconfiguration message to the remote UE, including SL DRX configuration information, indicating the SL DRX configuration in the downlink direction between the remote UE and the relay UE1, and between the remote UE and the relay UE2.

[0219] In some embodiments, the RRCReconfiguration message includes Uu DRX configuration, instructing the remote UE to reconfigure Uu DRX.

[0220] In step 1140, the remote UE receives the instruction from the base station, performs relevant configuration, and sends an RRCReconfigurationComplete message to the base station to confirm that the SL DRX configuration is completed.

[0221] In some embodiments, if the remote UE rejects the SL DRX configuration of a certain path, the RRC message includes rejection indication information and the ID information of the relay UE on the relevant path, SL direction information, etc. The base station selects to send the SL DRX configuration information to the relay UE on the path accepted by the remote UE in the next step according to the instruction of the remote UE; if the remote UE rejects the SL DRX configuration on all paths, the base station ends the SL DRX configuration process after receiving the RRC message fed back by the remote UE.

[0222] In step 1150, the base station sends an RRCReconfiguration message to the relay UE1, including SL DRX configuration information, indicating the SL DRX configuration in the downlink direction between the remote UE and the relay UE1, and indicating that the relay UE1 does not need to send the SL DRX configuration in the related direction to the remote UE.

[0223] In some embodiments, the RRCReconfiguration message includes Uu DRX configuration, instructing the relay UE1 to reconfigure Uu DRX.

[0224] In step 1160, the relay UE1 receives the instruction from the base station, performs relevant configuration, and sends an RRCReconfigurationComplete message to the base station to confirm that the relevant configuration is completed.

[0225] In step 1170, the base station sends an RRCReconfiguration message to the relay UE2, including SL DRX configuration information, indicating the SL DRX configuration in the downlink direction between the remote UE and the relay UE2, and indicating that the relay UE2 does not need to send the SL DRX configuration in the related direction to the remote UE.

[0226] In some embodiments, the RRCReconfiguration message includes Uu DRX configuration, instructing the relay UE2 to reconfigure Uu DRX.

[0227] In step 1180, relay UE2 receives the instruction from the base station, performs relevant configuration, and sends an RRCReconfigurationComplete message to the base station to confirm that the relevant configuration is completed.

[0228] In the above embodiment, in a scenario where multiple non-directly connected path relays are provided in the same base station, SLDRX configuration in the downlink direction can be performed.

[0229] Fig.12The present invention is a flowchart of other embodiments of the communication method in the direct link relay scenario of the present invention. In the multi-path relay scenario across base stations, the serving base station on the direct connection path of the remote UE and the serving base station of the relay UE are different base stations; or the remote UE is connected to multiple different base stations simultaneously through multiple relay non-direct connection paths. For the uplink direction, the remote UE is the sending UE and the relay UE is the receiving UE.

[0230] In step 1210, the relay UE sends a SidelinkUEInformationNR message to its serving base station 2, including SLDRX auxiliary information, and reports the SL DRX configuration information preferred by the relay UE as a receiving UE.

[0231] In step 1220, base station 2 sends Xn signaling to the serving base station of the UE in this direction, that is, base station 1, including SL DRX auxiliary information reported by the relay UE, indicating the SL DRX configuration information preferred by the relay UE as a receiving UE.

[0232] In some embodiments, the Xn signaling may also include at least one of the ID information of the receiving UE and / or the sending UE in the relevant direction, the communication direction indication corresponding to the SL DRX auxiliary information, and the like.

[0233] In step 1230 , base station 1 determines the SL DRX configuration in the uplink direction between the remote UE and the relay UE according to the relay UE SL DRX auxiliary information indicated by base station 2 .

[0234] In some embodiments, the base station adjusts the Uu DRX configuration of the remote UE according to the SL DRX configuration.

[0235] In step 1240, base station 1 sends Xn signaling to base station 2, including SL DRX configuration information, indicating the SL DRX configuration in the uplink direction between the remote UE and the relay UE.

[0236] In step 1250 , base station 2 adjusts the relay UE Uu DRX configuration according to the SL DRX configuration information sent by base station 1 .

[0237] In step 1260, base station 2 sends an RRCReconfiguration message to the relay UE, including SL DRX configuration information, indicating the SL DRX configuration in the uplink direction between the remote UE and the relay UE.

[0238] In some embodiments, the RRCReconfiguration message includes Uu DRX configuration, instructing the relay UE to reconfigure Uu DRX.

[0239] In step 1270, the relay UE receives the instruction from base station 2, performs relevant configuration, and sends an RRCReconfigurationComplete message to the base station to confirm that the SL DRX configuration is completed.

[0240] In some embodiments, if the relay UE rejects the SL DRX configuration, the RRC message includes indication information. After receiving the RRC message fed back by the remote UE, the base station 2 sends the relay UE rejection indication information to the base station 1 through Xn signaling. After receiving the rejection indication information, the SL DRX configuration process ends.

[0241] In step 1280, base station 2 sends Xn signaling to base station 1 to confirm that the relay UE has accepted the SL DRX configuration.

[0242] In step 1290, base station 1 sends an RRCReconfiguration message to the remote UE, including SL DRX configuration information, indicating the SL DRX configuration in the uplink direction between the remote UE and the relay UE, and indicating that the remote UE does not need to send the SL DRX configuration in the related direction to the relay UE.

[0243] In some embodiments, the RRCReconfiguration message includes Uu DRX configuration, instructing the remote UE to reconfigure Uu DRX.

[0244] In step 12100, the remote UE receives an instruction from base station 1, performs relevant configuration, and sends an RRCReconfigurationComplete message to the base station to confirm that the relevant configuration is completed.

[0245] In the above embodiment, in the cross-base station multipath relay scenario, uplink SL DRX configuration can be implemented.

[0246] Fig.13 The flowchart of other embodiments of the communication method in the direct link relay scenario of the present disclosure is as follows. In this embodiment, in the cross-base station multi-path relay scenario, the service base station on the direct connection path of the remote UE and the service base station of the relay UE are different base stations; or the remote UE is connected to multiple different base stations at the same time through multiple relay non-direct connection paths; or, the remote UE and the relay UE1 are in the same base station, but different from the relay UE2. For the downlink direction, the relay UE is the sending UE and the remote UE is the receiving UE.

[0247] In step 1310, the remote UE sends a SidelinkUEInformationNR message including SL DRX auxiliary information to base station 2, reporting the SL DRX configuration information preferred by the remote UE as a receiving UE. In this step, base station 2 is the serving base station of the sending UE.

[0248] In step 1320, base station 2 determines the SL DRX configuration in the downlink direction between the remote UE and the relay UE according to the SL DRX auxiliary information reported by the remote UE.

[0249] In some embodiments, the base station adjusts the Uu DRX configuration of the relay UE according to the SL DRX configuration.

[0250] In step 1330, base station 2 sends an RRCReconfiguration message to the remote UE, including SL DRX configuration information, indicating the SL DRX configuration in the downlink direction between the remote UE and the relay UE.

[0251] In step 1340, the remote UE receives the instruction from base station 2, performs relevant configuration, and sends an RRCReconfigurationComplete message to the base station to confirm that the SL DRX configuration is completed.

[0252] In some embodiments, if the remote UE rejects the SL DRX configuration, the RRC message includes indication information. After receiving the RRC message fed back by the remote UE, the base station 2 ends the SL DRX configuration process.

[0253] In step 1350, base station 2 sends an RRCReconfiguration message to the relay UE, including SL DRX configuration information, indicating the SL DRX configuration in the downlink direction between the remote UE and the relay UE, and indicating that the relay UE does not need to send the SL DRX configuration in the relevant direction to the remote UE.

[0254] In some embodiments, the RRCReconfiguration message includes Uu DRX configuration, instructing the relay UE to reconfigure Uu DRX.

[0255] In step 1360, the relay UE receives the instruction from base station 2, performs relevant configuration, and sends an RRCReconfigurationComplete message to the base station to confirm that the relevant configuration is completed.

[0256] In step 1370, base station 2 sends Xn signaling to base station 1, including SL DRX configuration in the downlink direction between the remote UE and relay UE 1. Base station 1 is a directly connected base station or a serving base station of the remote UE.

[0257] In step 1380 , base station 1 may optionally adjust the remote UE Uu DRX configuration according to the downlink direction SL DRX configuration between the remote UE and relay UE1 sent by base station 2 .

[0258] In step 1390, the remote UE of base station 1 sends an RRCReconfiguration message to reconfigure the remote UE Uu DRX configuration.

[0259] In step 13100 , the remote UE performs relevant configuration according to the instruction of base station 1 and sends an RRCReconfigurationComplete message to base station 1 .

[0260] In the above embodiment, base station 1 and base station 2 interact through Xn signaling to help base station 1 obtain the SL DRX configuration of the relevant direction, thereby assisting base station 1 to adjust the Uu DRX configuration. Of course, the remote UE can also report the SL DRX configuration to base station 1 through the SidelinkUEInformationNR message.

[0261] Fig.14 It is a structural diagram of some embodiments of the user equipment of the present disclosure, where the user equipment includes a first sending module 1410 and a first receiving module 1420.

[0262] The first sending module 1410 is configured to send a first message to a first serving base station when serving as a receiving UE, wherein the first serving base station is a serving base station of the sending UE, and the first message includes SL DRX auxiliary information.

[0263] In some embodiments, the first sending module 1410 sends RRC signaling to the serving base station of the sending UE in the corresponding direction, indicating whether it supports the SL DRX function and SL DRX auxiliary information. The serving base station of the sending UE determines the SL DRX configuration in the direction related to the SL unicast communication between the relay UE and the remote UE based on the SL DRX auxiliary information reported by the receiving UE, and sends RRC signaling to the sending and receiving UEs in the relevant direction respectively, indicating the DRX configuration of the SL unicast communication in the relevant direction.

[0264] In some embodiments, by defining a new RRC message or adding SL DRX auxiliary information in the SidelinkUEInformationNR message, it is used to indicate the semi-static SL DRX parameter information preferred when the relevant terminal node acts as a receiving UE when the remote UE and the relay UE conduct SL unicast communication, so as to assist the base station in deciding the SL DRX configuration.

[0265] In some embodiments, the conditions that trigger the relevant terminal node to report SL DRX auxiliary information to its serving base station or the serving base station of the UE in the relevant direction are: when the terminal node with SL DRX capability is in U2N relay or multi-path communication, it expects to perform SL DRX operation or its preferred SL DRX information changes.

[0266] In some embodiments, the first sending module 1410 is further configured to send a SL DRX configuration rejection indication when rejecting SLDRX configuration information in one or more directions, wherein the SL DRX configuration rejection indication includes an identifier of the sending UE in one or more directions or a SL direction index.

[0267] For example, a new RRC message is defined or an SLDRX configuration rejection indication is added to the existing RRCReconfigurationComplete message, as well as the ID information of the sending UE in the relevant direction, to indicate that the receiving UE rejects the SL DRX configuration.

[0268] The first receiving module 1420 is configured to receive a second message sent by the first serving base station, wherein the second message includes DRX configuration information of SL unicast communication between terminals, and the DRX configuration information of SL unicast communication between terminals is determined according to SL DRX auxiliary information.

[0269] In some embodiments, the first receiving module 1420 is further configured to receive air interface DRX configuration information.

[0270] In the above embodiment, the UE sends SL DRX auxiliary information to the base station, and the base station determines the DRX configuration information of the SL unicast communication between terminals, and sends the DRX configuration information of the SL unicast communication between terminals to the UE, which can reduce the signaling interaction between terminals and between the terminal and the base station, thereby saving terminal energy consumption.

[0271] Fig.15 The schematic diagram of the structure of some other embodiments of the user equipment of the present disclosure is shown in FIG. 1500. The user equipment 1500 includes a memory 1510 and a processor 1520. The memory 1510 may be a disk, a flash memory, or any other non-volatile storage medium. The memory is used to store the instructions in the above embodiments. The processor 1520 is coupled to the memory 1510 and may be implemented as one or more integrated circuits, such as a microprocessor or a microcontroller. The processor 1520 is used to execute the instructions stored in the memory.

[0272] In some embodiments, the processor 1520 is coupled to the memory 1510 via a BUS 1530. The user device 1500 may also be connected to an external storage system 1550 via a storage interface 1540 to call external data, and may also be connected to a network or another computer system (not shown) via a network interface 1560. This will not be described in detail here.

[0273] In this embodiment, the energy consumption of the terminal can be reduced by storing data instructions in a memory and processing the instructions through a processor.

[0274] Fig.16 It is a schematic diagram of the structure of some embodiments of the base station of the present disclosure, and the base station includes a second receiving module 1610, a second processing module 1620 and a second sending module 1630.

[0275] The second receiving module 1610 is configured to receive a first message sent by the UE when it is a receiving UE, wherein the first serving base station is a serving base station of the sending UE, and the first message includes direct link SL discontinuous reception DRX auxiliary information.

[0276] The second processing module 1620 is configured to determine DRX configuration information for inter-terminal SL unicast communication according to the SL DRX assistance information.

[0277] In some embodiments, the second processing module 1620 is further configured to determine air interface DRX configuration information according to DRX configuration information of inter-terminal SL unicast communication.

[0278] The second sending module 1630 is configured to send DRX configuration information of inter-UE SL unicast communication to the receiving UE and the sending UE.

[0279] In some embodiments, the second sending module 1630 is further configured to send the air interface DRX configuration information to the receiving UE and the sending UE.

[0280] In some embodiments, SL DRX assistance information and SL DRX configuration information are coordinated between base stations.

[0281] In the above embodiment, the base station determines and sends the SLDRX configuration to the receiving UE based on the SL DRX auxiliary information reported by the receiving UE, which can reduce unnecessary signaling interactions between the remote UE, relay UE and service base station, save signaling overhead, shorten the coordination time of SL DRX and Uu DRX, and save terminal energy consumption.

[0282] Fig.17 1 is a schematic diagram of the structure of other embodiments of the base station of the present disclosure. The base station 1700 includes a memory 1710 and a processor 1720. Among them: the memory 1710 can be a disk, a flash memory or any other non-volatile storage medium. The memory is used to store the instructions in the above embodiments. The processor 1720 is coupled to the memory 1710 and can be implemented as one or more integrated circuits, such as a microprocessor or a microcontroller. The processor 1720 is used to execute the instructions stored in the memory.

[0283] In some embodiments, the processor 1720 is coupled to the memory 1710 via a BUS 1730. The base station 1700 can also be connected to an external storage system 1750 via a storage interface 1740 to call external data, and can also be connected to a network or another computer system (not shown) via a network interface 1760. No further detailed description will be given here.

[0284] In this embodiment, by storing data instructions in a memory and then processing the instructions through a processor, signaling interaction can be optimized and signaling overhead can be saved.

[0285] In some other embodiments of the present disclosure, a user equipment and a base station are also protected, wherein the user equipment includes a remote user equipment and at least one relay user equipment, and the base station may be one or more base stations.

[0286] In other embodiments, a computer-readable storage medium stores computer program instructions, which implement the steps of the methods in the above-mentioned embodiments when executed by a processor. It should be understood by those skilled in the art that the embodiments of the present disclosure may be provided as methods, devices, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present disclosure may take the form of a computer program product implemented on one or more computer-usable non-transient storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0287] The present disclosure is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present disclosure. It should be understood that each process and / or block in the flowchart and / or block diagram and the combination of processes and / or blocks in the flowchart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0288] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0289] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0290] So far, the present disclosure has been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0291] Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A communication method in a direct link relay scenario, comprising: When the user equipment UE acts as a receiving UE, the user equipment UE sends a first message to the first serving base station, wherein the first serving base station is a serving base station of the sending UE, and the first message includes direct link SL discontinuous reception DRX auxiliary information; and The UE receives a second message sent by the first serving base station, wherein the second message includes DRX configuration information of SL unicast communication between terminals, and the DRX configuration information of SL unicast communication between terminals is determined according to the SL DRX auxiliary information.

2. The communication method according to claim 1, wherein: The second message also includes air interface DRX configuration information, wherein the air interface DRX configuration information is determined according to the DRX configuration information of the SL unicast communication between the terminals.

3. The communication method according to claim 1, wherein: The UE sending a first message to the first serving base station includes: The UE with SL DRX capability is in user equipment to network U2N relay or multi-path communication, and expects to perform SLDRX operation or the SL DRX information preferred by the UE changes, and sends the first message to the first serving base station.

4. The communication method according to claim 1, wherein: The SL DRX auxiliary information includes at least one set of semi-static SL DRX parameter information for unicast communication, wherein each set of semi-static SL DRX parameter information in the at least one set includes at least one of a SL DRX duration timer length, a SL DRX cycle start offset, and a SL DRX time slot offset.

5. The communication method according to claim 1, further comprising at least one of the following: When the UE completes configuring the SL DRX configuration information, sending a configuration completion confirmation message; and The UE, as a receiving UE, sends an SLDRX configuration rejection indication when rejecting SL DRX configuration information in one or more directions, wherein: The SL DRX configuration rejection indication includes an identifier of a transmitting UE in one or more directions or a SL direction index.

6. The communication method according to claim 1, wherein: The UE sending a first message to the first serving base station includes at least one of the following: The UE directly sends the first message to the first serving base station as a receiving UE; The UE, as a receiving UE, sends the first message to the first serving base station through the sending UE; The UE, as a receiving UE, sends the first message to the first serving base station through a second serving base station, wherein the second serving base station is the serving base station of the receiving UE.

7. The communication method according to claim 6, wherein: When the UE, as a receiving UE, sends the first message to the first serving base station through the second serving base station, the UE receiving the second message sent by the first serving base station includes: The UE, as a receiving UE, receives the second message sent by the first serving base station through the second serving base station.

8. The communication method according to claim 7, wherein: The second message also includes air interface DRX configuration information, wherein, when the second serving base station determines that the air interface DRX configuration of the UE needs to be adjusted based on the DRX configuration information of the SL unicast communication between the terminals, the air interface DRX configuration information is carried in the second message and sent to the UE.

9. The communication method according to claim 6, wherein: Also includes: When the UE acts as a receiving UE and sends the first message to the first service base station via the second service base station, the UE receives the third message sent by the second service base station, wherein the third message includes a reconfiguration air interface DRX configuration message, and the third message is determined by the second service base station based on the DRX configuration information of the terminal-to-terminal SL unicast communication sent by the first service base station.

10. The communication method according to any one of claims 1 to 6, wherein: The UE receiving the second message sent by the first serving base station includes: The UE, as a receiving UE, receives the second message sent by the first serving base station through the sending UE, wherein the UE, as the receiving UE, is configured according to the second message and then sends a feedback message to the sending UE.

11. The communication method according to claim 10, wherein: In a case where the feedback message is a configuration confirmation completion message, the configuration confirmation completion message includes DRX configuration information of the inter-terminal SL unicast communication, and the communication method further includes: After the UE completes the SL DRX configuration according to the DRX configuration information of the SL unicast communication between the terminals, it sends a confirmation configuration completion message to the first service base station. After receiving the air interface DRX configuration information sent by the first service base station, it completes the air interface DRX configuration and sends a confirmation configuration completion message to the first service base station.

12. The communication method according to any one of claims 1 to 6, wherein: The UE receiving the second message sent by the first serving base station includes: The UE directly receives the second message sent by the first serving base station as a receiving UE, wherein the UE sends a feedback message to the first serving base station after being configured according to the second message.

13. The communication method according to any one of claims 1 to 9, wherein: The SL DRX auxiliary information is configured to indicate the semi-static SL DRX parameter information preferred by the UE as the receiving UE when the remote UE and the relay UE perform SL unicast communication, wherein: In the uplink direction, the remote UE serves as the sending UE, and the relay UE serves as the receiving UE; and In the downlink direction, the remote UE serves as the receiving UE and the relay UE serves as the sending UE.

14. The communication method according to any one of claims 1 to 9, wherein: The DRX configuration information of the inter-terminal SL unicast communication includes an SL direction index and SL DRX configuration information, wherein: The SL direction index is used to indicate the SL unicast communication direction corresponding to the SL DRX configuration; and The SL DRX configuration information includes at least one of the SL DRX duration timer length, the SL DRX inactivity timer length, the SL DRX HARQ RTT timer length, the SL DRX retransmission timer length, the SL DRX cycle start offset and the SL DRX timeslot offset.

15. The communication method according to claim 14, wherein: The second message also includes a SL DRX configuration indication, wherein the SL DRX configuration indication is configured to indicate that when the UE acts as the sending UE, there is no need to send the SL DRX configuration information to the receiving UE.

16. The communication method according to any one of claims 1 to 9, wherein: The first message is carried in a radio resource control RRC signaling message or an SL terminal information new air interface message or an Xn message; The second message is carried in RRC signaling or Xn message.

17. The communication method according to claim 5, wherein: The SL DRX configuration rejection indication is carried in a radio resource control RRC signaling message or an Xn message.

18. A communication method in a direct link relay scenario, comprising: The first serving base station receives a first message sent when the user equipment UE is used as a receiving UE, wherein the first serving base station is a serving base station of the sending UE, and the first message includes direct link SL discontinuous reception DRX auxiliary information; The first serving base station determines a second message according to the SL DRX auxiliary information, wherein the second message includes DRX configuration information for SL unicast communication between terminals; and The first serving base station sends the second message to the receiving UE and the sending UE.

19. The communication method according to claim 18, wherein: The second message also includes air interface DRX configuration information, wherein the air interface DRX configuration information is determined according to the DRX configuration information of the SL unicast communication between the terminals.

20. The communication method according to claim 18, wherein: The first serving base station sending the second message to the receiving UE and the sending UE includes at least one of the following: The first serving base station directly sends the second message to the receiving UE and the sending UE; The first serving base station sends the second message to the sending UE, wherein the sending UE sends the second message to the receiving UE.

21. The communication method according to claim 18, wherein: The first serving base station receiving the first message sent by the receiving UE includes: The first serving base station receives the first message sent by the receiving UE through the second serving base station, wherein the second serving base station is the serving base station of the receiving UE; The first serving base station sending the second message to the receiving UE and the sending UE includes: The first serving base station sends the second message to the receiving UE through the second serving base station, and after receiving the feedback message sent by the receiving UE through the second serving base station, sends the second message to the sending UE.

22. The communication method according to claim 18, wherein: The communication method further comprises: The first serving base station sends the DRX configuration information of the inter-terminal SL unicast communication to a second serving base station, wherein the second serving base station is a serving base station of the receiving UE; The second serving base station generates a reconfiguration air interface DRX configuration message according to the DRX configuration information of the inter-terminal SL unicast communication, and sends the reconfiguration air interface DRX configuration message to the receiving UE, wherein the receiving UE is a remote UE in the downlink direction.

23. The communication method according to any one of claims 18 to 22, wherein: The SL DRX auxiliary information is configured to indicate the semi-static SL DRX parameter information preferred by the UE as the receiving UE when the remote UE and the relay UE perform SL unicast communication, wherein: In the uplink direction, the remote UE serves as the sending UE, and the relay UE serves as the receiving UE; and In the downlink direction, the remote UE serves as the receiving UE and the relay UE serves as the sending UE.

24. The communication method according to any one of claims 18 to 22, wherein: The DRX configuration information of the inter-terminal SL unicast communication includes an SL direction index and SL DRX configuration information, wherein: The SL direction index is used to indicate the SL unicast communication direction corresponding to the SL DRX configuration; and The SL DRX configuration information includes at least one of the SL DRX duration timer length, the SL DRX inactivity timer length, the SL DRX HARQ RTT timer length, the SL DRX retransmission timer length, the SL DRX cycle start offset and the SL DRX timeslot offset.

25. The communication method according to claim 24, wherein: The first serving base station sends a SL DRX configuration indication to the receiving UE and the sending UE, wherein the SL DRX configuration indication is configured to indicate that when the UE acts as the sending UE, there is no need to send the SL DRX configuration information to the receiving UE.

26. The communication method according to any one of claims 18 to 22, wherein: The SL DRX auxiliary information includes at least one set of semi-static SL DRX parameter information for unicast communication, wherein each set of semi-static SL DRX parameter information in the at least one set includes at least one of a SL DRX duration timer length, a SL DRX cycle start offset, and a SL DRX time slot offset.

27. A user equipment, comprising: A first sending module is configured to send a first message to a first serving base station when serving as a receiving UE, wherein the first serving base station is a serving base station of the sending UE, and the first message includes direct link SL discontinuous reception DRX auxiliary information; and The first receiving module is configured to receive a second message sent by the first serving base station, wherein the second message includes DRX configuration information of SL unicast communication between terminals, and the DRX configuration information of SL unicast communication between terminals is determined according to the SL DRX auxiliary information.

28. A user equipment, comprising: Memory; as well as A processor coupled to the memory, wherein the processor is configured to execute the communication method according to any one of claims 1 to 17 based on instructions stored in the memory.

29. A base station, comprising: A second receiving module is configured to receive a first message sent by a user equipment UE when the user equipment UE acts as a receiving UE, wherein the first serving base station is a serving base station of the sending UE, and the first message includes direct link SL discontinuous reception DRX auxiliary information; A second processing module is configured to determine DRX configuration information for SL unicast communication between terminals according to the SL DRX auxiliary information; and The second sending module is configured to send the DRX configuration information of the inter-terminal SL unicast communication to the receiving UE and the sending UE.

30. A base station, comprising: Memory; as well as A processor coupled to the memory, wherein the processor is configured to execute the method for activating a secondary cell according to any one of claims 18 to 26 based on instructions stored in the memory.

31. A communication system in a direct link relay scenario, comprising: The user equipment of claim 27 or 28, wherein the user equipment comprises a remote user equipment UE and at least one relay UE; and At least one base station as claimed in claim 29 or 30.

32. A non-transitory computer-readable storage medium having computer program instructions stored thereon, which, when executed by a processor, implement the communication method according to any one of claims 1 to 26.

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