A communication method and related device

Abstract

The present application provides a communication method and related apparatus, the method is applied to a first terminal device, the first terminal device is a terminal device that applies sidelink discontinuous reception SL DRX, the method includes: sending a first message to a second terminal device, the first message includes a first resource set, the first resource set is used for the second terminal device to perform SL transmission; using the resources corresponding to the first resource set as the activation time of the SL DRX; or, disabling the SL DRX on the resources corresponding to the first resource set; monitoring sidelink control information SCI on the resources corresponding to the first resource set, the SCI including the SCI from the second terminal device. Implementation of the embodiments of the present application avoids affecting the communication quality between terminal devices.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication method and related devices. Background Art

[0002] When terminal device A communicates with terminal device B via side link (SL), terminal device A may apply SL discontinuous reception (DRX), that is, terminal device A can only monitor side link control information (SCI) at some times, so that terminal device A can only receive data sent from other terminal devices at some times, for example, terminal device A can only receive data sent from terminal device B at some times. In the case where terminal device A applies SL DRX, the communication quality between terminal device A and terminal device B may be affected. Therefore, how to avoid affecting the communication quality between terminal devices has become a technical problem that needs to be solved urgently at the current stage. Summary of the invention

[0003] The present application provides a communication method and related apparatus, which avoids affecting the communication quality between terminal devices.

[0004] In a first aspect, a communication method is provided, the method being applied to a first terminal device, the first terminal device being a terminal device to which sidelink discontinuous reception SL DRX is applied, the method comprising:

[0005] Sending a first message to a second terminal device, where the first message includes a first resource set, and the first resource set is used for the second terminal device to perform SL transmission;

[0006] Using resources corresponding to the first resource set as the activation time of the SL DRX; or, disabling the SL DRX on the resources corresponding to the first resource set;

[0007] The resources corresponding to the first resource set monitor side link control information SCI, and the SCI includes the SCI from the second terminal device.

[0008] It can be seen that in the above technical solution, the first terminal device that applies SL DRX can use the resources corresponding to the first resource set sent to the second terminal device as the activation time of SL DRX, or, de-enable SL DRX on the resources corresponding to the first resource set sent to the second terminal device, so that the first terminal device can monitor SCI on the resources corresponding to the first resource set, so that when the second terminal device performs SL transmission according to the first resource set, the first terminal device can receive the SCI from the second terminal device, and can subsequently receive the SL data sent from the second terminal device, which solves the problem of how to avoid affecting the communication quality between the first terminal device and the second terminal device when the first terminal device applies SL DRX.

[0009] Optionally, sending the first message to the second terminal device includes:

[0010] broadcasting the first message;

[0011] The first message further includes a target layer 2 identifier or a target layer 1 identifier, and the target layer 2 identifier or the target layer 1 identifier is used to indicate a service type corresponding to the first resource set.

[0012] It can be seen that in the above technical solution, the first terminal device broadcasts a first message, and the first message also includes a target layer 2 identifier or a target layer 1 identifier. The target layer 2 identifier or the target layer 1 identifier is used to indicate the service type corresponding to the first resource set, so that the second terminal device can obtain the first resource set according to the target layer 2 identifier or the target layer 1 identifier.

[0013] Optionally, the first message is a PC5 wireless resource control RRC message, and the RRC layer of the first terminal device indicates the activation time corresponding to the first resource set to the media access control MAC layer of the first terminal device, or disables the SL DRX; or, the first message is a physical PHY layer message, and the PHY layer of the first terminal device indicates the activation time corresponding to the first resource set to the MAC layer of the first terminal device, or disables the SL DRX; or, the first message is a SL MAC control unit CE message.

[0014] In a second aspect, a communication method is provided, the method being applied to a first terminal device, the first terminal device being a terminal device to which SL DRX is applied, the method comprising:

[0015] receiving a second message from a second terminal device, where the second message is used to request a second resource set, where the second resource set is used for the second terminal device to perform SL transmission;

[0016] Disabling the SL DRX;

[0017] Performing monitoring to acquire the second resource set during disabling the SL DRX;

[0018] A third message is sent to the second terminal device, where the third message includes the second resource set.

[0019] It can be seen that in the above technical solution, the first terminal device that applies SL DRX can receive a message for requesting a resource set from the second terminal device, so that the first terminal device that applies SL DRX can disable SL DRX, and then perform monitoring during the period of disabling SL DRX to obtain a resource set that meets the needs of the second terminal device. At the same time, the resource set that meets the needs of the second terminal device is sent to the second terminal device, so that the second terminal device can obtain the resource set that meets the needs, which solves the problem of how to avoid affecting the communication quality of the first terminal device and the second terminal device when the first terminal device applies SL DRX.

[0020] Optionally, the disabling the SL DRX includes:

[0021] De-enabling the SL DRX at a first moment;

[0022] The first moment is determined according to the moment when the first terminal device receives the second message from the second terminal device.

[0023] Optionally, the second message is a PC5 RRC message, and the RRC layer of the first terminal device instructs the MAC layer of the first terminal device to disable SL DRX; or, the second message is a physical layer message, and the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to disable SL DRX; or, the second message is a SL MAC CE message.

[0024] Optionally, the method further includes: enabling the SL DRX at a second moment; wherein the second moment is determined according to a moment when the first terminal device sends a third message to the second terminal device; or,

[0025] The second moment is determined according to the first moment and the first duration, and the first moment is determined according to the moment when the first terminal device receives the second message from the second terminal device; or,

[0026] The second moment is determined according to the moment when the first terminal device acquires the second resource set.

[0027] It can be seen that in the above technical solution, the first terminal device enables SL DRX at the second moment, so that the first terminal device stops monitoring PSCCH, thereby saving energy consumption.

[0028] In a third aspect, a communication method is provided, the method being applied to a first terminal device, the first terminal device being a terminal device to which SL DRX is applied, the method comprising:

[0029] receiving a second message from a second terminal device, where the second message is used to request a second resource set, where the second resource set is used for the second terminal device to perform SL transmission;

[0030] determining an activation time of the SL DRX according to the second message;

[0031] Perform monitoring at the activation time of the SL DRX to acquire the second resource set;

[0032] A third message is sent to the second terminal device, where the third message includes the second resource set.

[0033] It can be seen that in the above technical solution, the first terminal device that applies SL DRX can receive a message for requesting a resource set from the second terminal device, so that the first terminal device that applies SL DRX can determine the activation time of SL DRX according to the message for requesting a resource set received from the second terminal device, and then perform monitoring at the activation time of SL DRX to obtain a resource set that meets the needs of the second terminal device. At the same time, the resource set that meets the needs of the second terminal device is sent to the second terminal device, so that the second terminal device can obtain the resource set that meets the needs, which solves the problem of how to avoid affecting the communication quality of the first terminal device and the second terminal device when the first terminal device applies SL DRX.

[0034] Optionally, determining the activation time of the SL DRX according to the second message includes:

[0035] The second message also includes first indication information, where the first indication information is used to indicate a time for the first terminal device to perform monitoring;

[0036] The time when the first terminal device performs monitoring is used as the activation time of the SL DRX.

[0037] It can be seen that in the above technical solution, the message sent by the second terminal device to request a resource set may also include indication information, so that the time indicated by the indication information is used as the activation time of the SL DRX, and then monitoring is performed at the activation time of the SL DRX to obtain a resource set that meets the requirements of the second terminal device.

[0038] Optionally, the second message is a PC5 RRC message, and the RRC layer of the first terminal device indicates the activation time of the SL DRX to the MAC layer of the first terminal device; or, the second message is a PHY layer message, and the PHY layer of the first terminal device indicates the activation time of the SL DRX to the MAC layer of the first terminal device; or, the second message is a SL MAC CE message.

[0039] In a fourth aspect, a communication method is provided, the method being applied to a first terminal device, the first terminal device being a terminal device to which SL DRX is applied, the method comprising:

[0040] Sending a fourth message to the second terminal device, where the fourth message is used to request a channel state information report;

[0041] Disabling the SL DRX;

[0042] The SCI is monitored to receive the channel state information report from the second terminal device while the SL DRX is disabled.

[0043] It can be seen that in the above technical solution, the first terminal device that applies SL DRX can send a message requesting a channel state information report to the second terminal device, and disable SL DRX, so that the first terminal device listens to SCI during the period of disabling SL DRX and can then receive the channel state information report from the second terminal device, which solves the problem of how to avoid affecting the communication quality between the first terminal device and the second terminal device when the first terminal device applies SL DRX.

[0044] Optionally, the disabling of the SL DRX includes: disabling the SL DRX at a third moment; wherein the third moment is determined according to the moment when the first terminal device sends the fourth message to the second terminal device.

[0045] Optionally, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to disable the SLDRX.

[0046] Optionally, the method further includes: enabling the SL DRX at a fourth moment; wherein the fourth moment is determined according to a moment when the first terminal device receives the channel state information report from the second terminal device; or,

[0047] The fourth moment is determined according to the third moment and the second duration, and the third moment is determined according to the moment when the first terminal device sends the fourth message to the second terminal device.

[0048] It can be seen that in the above technical solution, the first terminal device enables SL DRX at the fourth moment, so that the first terminal device stops monitoring SCI, thereby saving energy consumption.

[0049] Optionally, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to enable the SLDRX.

[0050] In a fifth aspect, a communication method is provided, the method being applied to a first terminal device, the first terminal device being a terminal device to which a first SL DRX is applied, the method comprising:

[0051] Sending a fourth message to the second terminal device, where the fourth message is used to request a channel state information report;

[0052] Apply the second SL DRX;

[0053] The SCI is monitored during application of the second SL DRX to receive the channel state information report from the second terminal device.

[0054] It can be seen that in the above technical solution, the first terminal device that applies the first SL DRX can send a message requesting a channel state information report to the second terminal device, and apply the second SL DRX, so that the first terminal device monitors the SCI during the application of the second SL DRX and can receive the channel state information report from the second terminal device, solving the problem of how to avoid the communication quality of the first terminal device and the second terminal device being affected when the first terminal device applies SL DRX. At the same time, since the first terminal device that applies the second SL DRX is not fully listening, energy consumption is saved.

[0055] Optionally, applying the second SL DRX includes: applying the second SL DRX at a third moment; wherein the third moment is determined according to the moment when the first terminal device sends the fourth message to the second terminal device.

[0056] Optionally, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to apply the second SL DRX.

[0057] Optionally, the method also includes: applying the first SL DRX at a fourth moment; wherein the fourth moment is determined according to the moment when the first terminal device receives the channel state information report from the second terminal device; or, the fourth moment is determined according to a third moment and a second duration, and the third moment is determined according to the moment when the first terminal device sends the fourth message to the second terminal device.

[0058] It can be seen that in the above technical solution, the first terminal device applies the first SL DRX at the fourth moment, so that the first terminal device stops monitoring the SCI, thereby saving energy consumption.

[0059] Optionally, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to apply the first SL DRX.

[0060] In a sixth aspect, a communication device is provided, wherein the device is a first terminal device using SL DRX, and the first terminal device includes a transceiver module and a processing module.

[0061] The transceiver module is used to send a first message to a second terminal device, where the first message includes a first resource set, and the first resource set is used for the second terminal device to perform SL transmission;

[0062] The processing module is configured to use the resources corresponding to the first resource set as the activation time of the SL DRX; or to disable the SL DRX on the resources corresponding to the first resource set;

[0063] The transceiver module is used to monitor side link control information SCI in the resources corresponding to the first resource set, and the SCI includes SCI from the second terminal device.

[0064] Optionally, when sending the first message to the second terminal device, the transceiver module is used to broadcast the first message;

[0065] The first message further includes a target layer 2 identifier or a target layer 1 identifier, and the target layer 2 identifier or the target layer 1 identifier is used to indicate a service type corresponding to the first resource set.

[0066] Optionally, the first message is a PC5 wireless resource control RRC message, and the RRC layer of the first terminal device indicates the activation time corresponding to the first resource set to the media access control MAC layer of the first terminal device, or disables the SL DRX; or, the first message is a physical PHY layer message, and the PHY layer of the first terminal device indicates the activation time corresponding to the first resource set to the MAC layer of the first terminal device, or disables the SL DRX; or, the first message is a SL MAC control unit CE message.

[0067] In a seventh aspect, a communication device is provided, wherein the device is a first terminal device using SL DRX, wherein the first terminal device includes a transceiver module and a processing module,

[0068] The transceiver module is used to receive a second message from a second terminal device, where the second message is used to request a second resource set, and the second resource set is used for the second terminal device to perform SL transmission;

[0069] The processing module is used to disable the SL DRX;

[0070] The processing module is configured to perform monitoring to acquire the second resource set during disabling of the SL DRX;

[0071] The transceiver module is used to send a third message to the second terminal device, and the third message includes the second resource set.

[0072] Optionally, when disabling the SL DRX, the processing module is used to disable the SLDRX at a first moment;

[0073] The first moment is determined according to the moment when the first terminal device receives the second message from the second terminal device.

[0074] Optionally, the second message is a PC5 RRC message, and the RRC layer of the first terminal device instructs the MAC layer of the first terminal device to disable SL DRX; or, the second message is a physical layer message, and the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to disable SL DRX; or, the second message is a SL MAC CE message.

[0075] Optionally, the processing module is further configured to enable the SL DRX at a second moment;

[0076] The second moment is determined according to the moment when the first terminal device sends a third message to the second terminal device; or,

[0077] The second moment is determined according to the first moment and the first duration, and the first moment is determined according to the moment when the first terminal device receives the second message from the second terminal device; or,

[0078] The second moment is determined according to the moment when the first terminal device acquires the second resource set.

[0079] In an eighth aspect, a communication device is provided, wherein the device is a first terminal device using SL DRX, the first terminal device includes a transceiver module and a processing module,

[0080] The transceiver module is used to receive a second message from a second terminal device, where the second message is used to request a second resource set, and the second resource set is used for the second terminal device to perform SL transmission;

[0081] The processing module is used to determine the activation time of the SL DRX according to the second message;

[0082] The processing module is configured to perform monitoring at the activation time of the SL DRX to acquire the second resource set;

[0083] The transceiver module is used to send a third message to the second terminal device, and the third message includes the second resource set.

[0084] Optionally, the second message also includes first indication information, and the first indication information is used to indicate the time when the first terminal device performs monitoring; when determining the activation time of the SL DRX according to the second message, the processing module is used to use the time when the first terminal device performs monitoring as the activation time of the SL DRX.

[0085] Optionally, the second message is a PC5 RRC message, and the RRC layer of the first terminal device indicates the activation time of the SL DRX to the MAC layer of the first terminal device; or, the second message is a PHY layer message, and the PHY layer of the first terminal device indicates the activation time of the SL DRX to the MAC layer of the first terminal device; or, the second message is a SL MAC CE message.

[0086] In a ninth aspect, a communication device is provided, wherein the device is a first terminal device using SL DRX, wherein the first terminal device includes a transceiver module and a processing module,

[0087] The transceiver module is used to send a fourth message to the second terminal device, where the fourth message is used to request a channel state information report;

[0088] The processing module is used to disable the SL DRX;

[0089] The transceiver module is used to monitor the SCI to receive the channel state information report from the second terminal device during disabling of the SL DRX.

[0090] Optionally, when disabling the SL DRX, the processing module is used to disable the SLDRX at a third moment; wherein the third moment is determined according to the moment when the first terminal device sends the fourth message to the second terminal device.

[0091] Optionally, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to disable the SLDRX.

[0092] Optionally, the processing module is further used to enable the SL DRX at a fourth moment; wherein the fourth moment is determined according to the moment when the first terminal device receives the channel state information report from the second terminal device; or,

[0093] The fourth moment is determined according to the third moment and the second duration, and the third moment is determined according to the moment when the first terminal device sends the fourth message to the second terminal device.

[0094] Optionally, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to enable the SLDRX.

[0095] In a tenth aspect, a communication device is provided, wherein the device is a first terminal device using SL DRX, the first terminal device includes a transceiver module and a processing module,

[0096] The transceiver module is used to send a fourth message to the second terminal device, where the fourth message is used to request a channel state information report;

[0097] The processing module is used to apply a second SL DRX;

[0098] The transceiver module is used to monitor the SCI during the application of the second SL DRX to receive the channel state information report from the second terminal device.

[0099] Optionally, when applying the second SL DRX, the processing module is used to apply the second SLDRX at a third moment; wherein the third moment is determined according to the moment when the first terminal device sends the fourth message to the second terminal device.

[0100] Optionally, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to apply the second SL DRX.

[0101] Optionally, the processing module is also used to apply the first SL DRX at a fourth moment; wherein the fourth moment is determined according to the moment when the first terminal device receives the channel state information report from the second terminal device; or, the fourth moment is determined according to a third moment and a second duration, and the third moment is determined according to the moment when the first terminal device sends the fourth message to the second terminal device.

[0102] Optionally, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to apply the first SL DRX.

[0103] In the eleventh aspect, a communication device is provided, comprising a processor, a memory, an input interface and an output interface, wherein the input interface is used to receive information from other communication devices outside the communication device, and the output interface is used to output information to other communication devices outside the communication device, and the processor calls the computer program stored in the memory to implement the method described in the first aspect, the second aspect, the third aspect, the fourth aspect or the fifth aspect.

[0104] In one possible design, the communication device may be a chip that implements the method in the first aspect, the second aspect, the third aspect, the fourth aspect, or the fifth aspect, or a device including a chip.

[0105] In the twelfth aspect, a computer-readable storage medium is provided, wherein a computer program is stored in the computer-readable storage medium. When the computer program is executed, the method described in the first aspect, the second aspect, the third aspect, the fourth aspect or the fifth aspect is implemented.

[0106] In a thirteenth aspect, a communication system is provided, which includes the above-mentioned first terminal device and / or the above-mentioned second terminal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0107] The following is a brief introduction to the drawings required for describing the embodiments or the prior art.

[0108] in:

[0109] Figure 1 The basic architecture of the communication system provided in the embodiment of the present application;

[0110] Figure 2 The figure is a schematic diagram of the hardware structure of the communication device applicable to the embodiment of the present application;

[0111] Figure 3 A flow chart of a communication method provided in an embodiment of the present application;

[0112] Figure 4 A flowchart of another communication method provided in an embodiment of the present application;

[0113] Figure 5 A flowchart of another communication method provided in an embodiment of the present application;

[0114] Figure 6 A flowchart of another communication method provided in an embodiment of the present application;

[0115] Figure 7 A flowchart of another communication method provided in an embodiment of the present application;

[0116] Figure 8A flowchart of another communication method provided in an embodiment of the present application;

[0117] Fig. 9 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0118] Fig.10 A simplified schematic diagram of the structure of a terminal device provided in an embodiment of the present application;

[0119] Fig.11 A simplified schematic diagram of the structure of an access network device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0120] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Among them, the terms "system" and "network" in the embodiments of the present application can be used interchangeably. Unless otherwise specified, " / " indicates that the objects associated before and after are in an "or" relationship. For example, A / B can represent A or B; "and / or" in this application is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. These three situations, where A and B can be singular or plural. And, in the description of the present application, unless otherwise specified, "multiple" refers to two or more than two. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple. In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish the same items or similar items with substantially the same functions and effects. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit the difference.

[0121] References to "one embodiment" or "some embodiments" etc. described in the embodiments of the present application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0122] Some of the nouns (or communication terms) involved in this application are explained below.

[0123] 1. Sidelink (SL)

[0124] SL refers to the link defined for direct communication between terminal devices, that is, the link between terminal devices that communicate directly without forwarding through base stations.

[0125] The communication types supported on the SL may include broadcast communication, multicast communication, and unicast communication. In the long term evolution (LTE) system, the sidelink supports broadcast communication. In the new radio (NR) system, the sidelink supports broadcast communication, multicast communication, and unicast communication.

[0126] Broadcast communication is similar to the broadcast system information of access network equipment, that is, the terminal equipment sends broadcast service data to the outside without encryption. Any other terminal equipment within the effective receiving range can receive the data of the broadcast service if it is interested in the broadcast service.

[0127] Multicast communication refers to the communication between all terminals in a communication group. Any terminal device in the group can send and receive data of the multicast service.

[0128] Unicast communication is similar to data communication after establishing a radio resource control (RRC) connection between a terminal device and an access network device. It requires a unicast connection to be established between the two terminal devices. After the unicast connection is established, the two terminal devices can communicate data based on the negotiated identifier. The data can be encrypted or unencrypted. Compared with broadcasting, in unicast communication, only two terminal devices that have established a unicast connection can communicate unicast data.

[0129] 2. Disable or deactivate SL DRX

[0130] Disabling SL DRX can be understood as deactivating SL DRX or not applying SL DRX configuration, that is, the RF receiver is not affected by SL DRX and is turned off. Correspondingly, enabling SL DRX can be understood as activating SL DRX or applying SL DRX configuration, that is, turning off the RF receiver in certain time periods based on SL DRX to save power.

[0131] 3. SL DRX activation time

[0132] The activation time of SL DRX corresponds to the time when SCI can be monitored, or can be understood as the time when the RF receiver is turned on. Correspondingly, the sleep time of SL DRX corresponds to the time when SCI is not monitored, or can be understood as the time when the RF receiver is turned off.

[0133] 4.SCI

[0134] The SCI includes a first stage SCI carried on a physical sidelink control channel (PSCCH) and a second stage SCI carried on a physical sidelink shared channel (PSSCH).

[0135] Monitoring SCI may be understood as monitoring first stage SCI and / or monitoring second stage SCI; or may be understood as monitoring PSCCH and / or PSSCH to obtain SCI carried on the PSCCH and / or PSSCH.

[0136] In the application, monitoring the first stage SCI can be replaced by monitoring the PSCCH, and monitoring the second stage SCI can be replaced by monitoring the PSSCH, and there is no restriction here.

[0137] 5. Time Unit

[0138] The time unit may be a time unit of different time granularities such as a frame, a subframe, a time slot, a mini-time slot or a symbol.

[0139] It should be understood that the technical solutions of the embodiments of the present application can be applied to the long term evolution (LTE) architecture, the fifth generation mobile communication technology (5G), the wireless local area network (WLAN) system, the V2X communication system, etc. The technical solutions of the embodiments of the present application can also be applied to other future communication systems, such as the 6G communication system, etc. In future communication systems, the functions may remain the same, but the names may change.

[0140] The following describes the basic architecture of the communication system provided by the embodiment of the present application. Figure 1 , Figure 1 The basic architecture of the communication system provided in the embodiment of the present application. Figure 1 As shown, the communication system may include a first terminal device 10 and a second terminal device 20 that performs SL communication with the first terminal device 10 . Figure 1 It is only a schematic diagram and does not constitute a limitation on the applicable scenarios of the technical solution provided in this application.

[0141] Among them, the first terminal device 10 and the second terminal device 20 are entities on the user side for receiving signals, or sending signals, or receiving signals and sending signals. The first terminal device 10 and the second terminal device 20 are used to provide one or more of voice services and data connectivity services to users. The first terminal device 10 and the second terminal device 20 can be devices that include wireless transceiver functions and can cooperate with access network equipment to provide communication services to users. Specifically, the first terminal device 10 and the second terminal device 20 can refer to user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, terminal, wireless communication equipment, user agent, user device or road side unit (RSU). The first terminal device 10 and the second terminal device 20 may also be a drone, an Internet of Things (IoT) device, a station (ST) in a WLAN, a cellular phone, a smart phone, a cordless phone, a wireless data card, a tablet computer, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a laptop computer, a machine type communication (MTC) terminal, a handheld device with a wireless communication function, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device (also referred to as a wearable smart device), a virtual reality (VR) terminal, an augmented reality (AR) terminal, 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 transportation safety (transportation) device, a wearable device (also referred to as a wearable smart device), a virtual reality (VR) terminal, an augmented reality (AR) terminal, 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 (transportation) device, a wireless terminal in smart grid ... The first terminal device 10 and the second terminal device 20 may also be device-to-device (D2D) devices, such as electric meters and water meters.The first terminal device 10 and the second terminal device 20 may also be terminals in a 5G system or terminals in a next generation communication system, which is not limited in the embodiments of the present application.

[0142] It is understandable that the first terminal device 10 can also perform SL communication with terminal devices other than the second terminal device 20, and the second terminal device 20 can also perform SL communication with terminal devices other than the first terminal device 10, and there is no limitation here.

[0143] The communication system may further include one or more access network devices 30 (only one is shown). In the present application, the first terminal device 10 and the second terminal device 20 may be located within the coverage of the same access network device; or, the first terminal device 10 and the second terminal device 20 may be located within the coverage of different access network devices; or, the first terminal device 10 is located within the coverage of the access network device, and the second terminal device 20 is located outside the coverage of the access network device (out of coverage); or, the first terminal device 10 is located outside the coverage of the access network device, and the second terminal device 20 is located within the coverage of the access network device; or both the first terminal device 10 and the second terminal device 20 are located outside the coverage of the access network device, and no limitation is made here.

[0144] Among them, the access network device 30 is an entity on the network side for sending signals, or receiving signals, or sending and receiving signals. The access network device 30 can be a device deployed in a radio access network (RAN) to provide wireless communication functions for the first terminal device 10 and the second terminal device 20, for example, it can be a transmission reception point (TRP), a base station, and various forms of control nodes. For example, a network controller, a wireless controller, a wireless controller in a cloud radio access network (CRAN) scenario, etc. Specifically, the access network equipment can be various forms of macro base stations, micro base stations (also called small stations), relay stations, access points (AP), radio network controllers (RNC), node B (NB), base station controllers (BSC), base transceiver stations (BTS), home base stations (for example, home evolved node B, or home node B, HNB), baseband units (BBU), transmission points (TRP), transmitting points (TP), mobile switching centers, etc., and can also be antenna panels of base stations. The control node can connect to multiple base stations and configure resources for multiple terminals covered by multiple base stations. In systems using different wireless access technologies, the names of devices with base station functions may be different. For example, it can be an evolved base station (evolutional node B, eNB or eNodeB) in the LTE system, it can also be a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario, it can also be a gNB in ​​5G, or the access network device 30 can be a relay station, access point, vehicle-mounted device, wearable device, and network side equipment in networks after 5G or access network equipment in future evolved PLMN networks, etc. This application does not limit the specific name of the access network device.

[0145] It should be noted that the technical solution provided in the embodiment of the present application is applicable to a variety of system architectures. The network architecture and business scenarios described in the embodiment of the present application are intended to more clearly illustrate the technical solution of the embodiment of the present application, and do not constitute a limitation on the technical solution provided in the embodiment of the present application. It is known to those skilled in the art that with the evolution of the network architecture and the emergence of new business scenarios, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

[0146] Optional, Figure 1 Each device in the system (e.g., the first terminal device 10, the second terminal device 20, the access network device 30, etc.) can be implemented by one device, or by multiple devices, or by a functional module in one device, which is not specifically limited in the embodiments of the present application. It is understandable that the above functions can be network elements in hardware devices, software functions running on dedicated hardware, or virtualized functions instantiated on a platform (e.g., a cloud platform).

[0147] For example, Figure 1 Each device in the Figure 2 The communication device 200 is used to implement the communication device 200. Figure 2 The hardware structure diagram of the communication device 200 applicable to the embodiment of the present application is shown in FIG.

[0148] The processor 201 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present application.

[0149] The communication link 202 may include a pathway to transmit information between the above-mentioned components.

[0150] The communication interface 204 is any transceiver-like device (such as an antenna, etc.) used to communicate with other devices or communication networks, such as Ethernet, RAN, wireless local area networks (WLAN), etc.

[0151] The memory 203 can be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of an instruction or data structure and can be accessed by a computer, but is not limited thereto. The memory can be independent and connected to the processor via a communication line 202. The memory can also be integrated with the processor. The memory provided in the embodiment of the present application can generally have non-volatility.

[0152] The memory 203 is used to store computer-executable instructions for executing the solution of the present application, and the execution is controlled by the processor 201. The processor 201 is used to execute the computer-executable instructions stored in the memory 203, thereby implementing the method provided in the following embodiments of the present application.

[0153] Optionally, the computer-executable instructions in the embodiments of the present application may also be referred to as application code, which is not specifically limited in the embodiments of the present application.

[0154] In a possible implementation, the processor 201 may include one or more CPUs, for example Figure 2 CPU0 and CPU1 in.

[0155] In a possible implementation, the communication device 200 may include multiple processors, such as Figure 2 201 and processor 207 in the embodiment of the present invention. Each of these processors may be a single-CPU processor or a multi-CPU processor. The processor herein may refer to one or more devices, circuits, and / or processing cores for processing data (e.g., computer program instructions).

[0156] In a possible implementation, the communication device 200 may further include an output device 205 and an input device 206. The output device 205 communicates with the processor 201 and may display information in a variety of ways. For example, the output device 205 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector. The input device 206 communicates with the processor 201 and may receive user input in a variety of ways. For example, the input device 206 may be a mouse, a keyboard, a touch screen device, or a sensor device.

[0157] The communication device 200 can be a general-purpose device or a dedicated device. In a specific implementation, the communication device 200 can be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, an embedded device or a computer with a plurality of other functions. Figure 2 The embodiment of the present application does not limit the type of the communication device 200.

[0158] The following, in conjunction with the accompanying drawings, explains how the technical solution provided in the embodiments of the present application specifically improves the communication quality between terminal devices.

[0159] See also Figure 3 , Figure 3 A flow chart of a communication method provided in an embodiment of the present application. Figure 3 The first terminal device in is Figure 1 The first terminal device 10 in Figure 3 The second terminal device in is Figure 1 The second terminal device 20 in the embodiment. It should be noted that Figure 3 It mainly describes how to receive the data sent by the second terminal device to the first terminal device when the first terminal device applies SL DRX, and also solves the problem of how to avoid affecting the communication quality between the first terminal device and the second terminal device when the first terminal device applies SL DRX. It can be understood that in this application, the first terminal device is a terminal device that applies SL DRX, which can be understood as the first terminal device monitoring SCI at some times; or, the first terminal device turns on the RF receiver at some times, and there is no limitation here. Figure 3 As shown, the method includes but is not limited to the following steps:

[0160] 301. The second terminal device receives a first message from the first terminal device, where the first message includes a first resource set, and the first resource set is used for SL transmission by the second terminal device. The first terminal device is a terminal device that applies SL DRX.

[0161] Correspondingly, the first terminal device sends a first message to the second terminal device.

[0162] The first message may be a PC5 radio resource control (RRC) message, a physical layer (PHY) message or a SL media access control (MAC) control element (CE) message, which is not limited here. It is understandable that the PHY layer message may be, for example, sidelink control information (SCI), which is not limited here.

[0163] Exemplarily, the first message may be, for example, an inter-UE coordination information message.

[0164] Among them, the first resource set may include time domain resources and frequency domain resources, which are not limited here. It can be understood that time domain resources can be different time granularities such as frames, subframes, time slots, micro-time slots, symbols, etc. Frequency domain resources can divide the frequency band used for SL communication into several resource blocks (resource blocks), or can divide the frequency band used for SL communication into several subchannels (subchannels), each subchannel contains a certain number of resource blocks. A transmission on SL (such as transmission of control information or data) can occupy one or more resource blocks or subchannels. Among them, control information can be transmitted through the physical sidelink control channel (physical sidelink control channel, PSCCH), and data can be transmitted through the physical sidelink shared channel (physical sidelink shared channel, PSSCH).

[0165] Among them, the first resource set is used for SL transmission by the second terminal device, which can be understood as: the first resource set is used for SL transmission between the second terminal device and the first terminal device, that is, the second terminal device and the first terminal device use the resources corresponding to the first resource set for SL transmission. Of course, the first resource set can also be used for SL transmission between the second terminal device and other terminal devices, which is not limited here.

[0166] Optionally, the first terminal device sends a first message to the second terminal device, which may include: the first terminal device broadcasts the first message, the first message also includes a target layer 2 identifier (destination L2 ID) or a target layer 1 identifier (destination L1 ID), and the target layer 2 identifier or the target layer 1 identifier is used to indicate the service type corresponding to the first resource set. It can be understood that if the first terminal device broadcasts the first message, the first message can be a SL MAC CE message or a PHY message. Among them, in the present application, the SL MAC CE message includes a target layer 2 identifier, and the PHY message includes a target layer 1 identifier.

[0167] It can be seen that in the above technical solution, the first terminal device broadcasts a first message, and the first message also includes a target layer 2 identifier or a target layer 1 identifier. The target layer 2 identifier or the target layer 1 identifier is used to indicate the service type corresponding to the first resource set, so that the second terminal device can obtain the first resource set according to the target layer 2 identifier or the target layer 1 identifier.

[0168] Optionally, the first message may also include second indication information, and the second indication information is used to indicate that the first resource set is used for SL transmission between the second terminal device and the first terminal device; or, the second indication information is used to indicate that the first resource set is used for SL transmission between the second terminal device and a terminal device other than the second terminal device, and there is no limitation here.

[0169] Optionally, in the present application, before step 301, the first terminal device may also receive a message for requesting a resource set from the second terminal device. For the specific process, please refer to Figure 4 or Figure 5 The embodiments involved are not limited here.

[0170] 302. The first terminal device uses the resources corresponding to the first resource set as the activation time of SL DRX; or, disables SL DRX on the resources corresponding to the first resource set.

[0171] Among them, the activation time of SL DRX and disabling SL DRX can refer to the above related description and will not be repeated here.

[0172] Among them, the first terminal device uses the resources corresponding to the first resource set as the activation time of SL DRX, which may include: the first terminal device uses the time domain resources corresponding to the first resource set as the activation time of SL DRX.

[0173] Exemplarily, the time domain resources corresponding to the first resource set are 9-11 seconds, and the activation time of the SL DRX of the first terminal device before step 302 is 0-9 seconds, so step 302 finally determines that the activation time of the SL DRX is 0-11 seconds. It can be seen that the activation time of the SL DRX of the first terminal device is updated from 0-9 seconds to 0-11 seconds. In addition, the time domain resources corresponding to the first resource set do not overlap with the activation time of the SL DRX of the first terminal device before step 302. In other words, the time domain resources corresponding to the first resource set completely overlap with the sleep time of the SL DRX of the first terminal device before step 302.

[0174] As another example, the time domain resources corresponding to the first resource set are 8-11 seconds, and the activation time of the SL DRX of the first terminal device before step 302 is 0-9 seconds, so step 302 finally determines that the activation time of the SL DRX is 0-11 seconds. It can be seen that the activation time of the SL DRX of the first terminal device is updated from 0-9 seconds to 0-11 seconds. In addition, the time domain resources corresponding to the first resource set partially overlap with the activation time of the SL DRX of the first terminal device before step 302. In other words, the time domain resources corresponding to the first resource set partially overlap with the sleep time of the SL DRX of the first terminal device before step 302.

[0175] Among them, the first terminal device disabling SL DRX on the resources corresponding to the first resource set may include: the first terminal device disabling SL DRX on the time domain resources corresponding to the first resource set. It can be understood that the time domain resources corresponding to the first resource set may partially overlap or not overlap with the activation time of the SL DRX of the first terminal device before step 302. That is, the time domain resources corresponding to the first resource set may partially overlap or completely overlap with the sleep time of the SL DRX of the first terminal device before step 302.

[0176] Optionally, step 302 can be replaced by: the first terminal device determines that the time domain resources corresponding to the first resource set overlap with the sleep time of SL DRX. Wherein, the first terminal device determines that the time domain resources corresponding to the first resource set overlap with the sleep time of SLDRX, which can be understood as: the first terminal device determines that the time domain resources corresponding to the first resource set overlap partially or completely with the sleep time of SLDRX.

[0177] Optionally, the first message is a PC5 RRC message, and the RRC layer of the first terminal device indicates to the MAC layer of the first terminal device the activation time corresponding to the first resource set, or disables SL DRX, or the time domain resources corresponding to the first resource set; or, the first message is a PHY layer message, and the PHY layer of the first terminal device indicates to the MAC layer of the first terminal device the activation time corresponding to the first resource set, or disables SL DRX, or the time domain resources corresponding to the first resource set; or, the first message is a SL MAC CE message.

[0178] Among them, the RRC layer of the first terminal device indicates the activation time corresponding to the first resource set, or disables SL DRX, or the time domain resources corresponding to the first resource set to the MAC layer of the first terminal device. It can be understood that: at the first moment, the RRC layer of the first terminal device indicates the activation time corresponding to the first resource set, or disables SL DRX, or the time domain resources corresponding to the first resource set to the MAC layer of the first terminal device.

[0179] Among them, the PHY layer of the first terminal device indicates the activation time corresponding to the first resource set, or disables SL DRX, or the time domain resources corresponding to the first resource set to the MAC layer of the first terminal device. It can be understood that: at the first moment, the PHY layer of the first terminal device indicates the activation time corresponding to the first resource set, or disables SL DRX, or the time domain resources corresponding to the first resource set to the MAC layer of the first terminal device.

[0180] It should be noted that in the present application, if step 302 is: the first terminal device uses the resources corresponding to the first resource set as the activation time of SL DRX, then at the first moment, the RRC layer of the first terminal device indicates the activation time corresponding to the first resource set, or the time domain resources corresponding to the first resource set, to the MAC layer of the first terminal device; or, at the first moment, the PHY layer of the first terminal device indicates the activation time corresponding to the first resource set, or the time domain resources corresponding to the first resource set, to the MAC layer of the first terminal device. If step 302 is that the first terminal device de-enables SL DRX on the resources corresponding to the first resource set, then at the first moment, the RRC layer of the first terminal device indicates to the MAC layer of the first terminal device to de-enable SL DRX, or the time domain resources corresponding to the first resource set; or, at the first moment, the PHY layer of the first terminal device indicates to the MAC layer of the first terminal device to de-enable SL DRX, or the time domain resources corresponding to the first resource set.

[0181] Optionally, the MAC layer of the first terminal device may also indicate to the PHY layer of the first terminal device the time corresponding to monitoring the SCI, wherein the time corresponding to monitoring the SCI is determined by the MAC layer of the first terminal device according to the activation time corresponding to the first resource set.

[0182] 303. The first terminal device monitors SCI in the resources corresponding to the first resource set, where the SCI includes the SCI from the second terminal device.

[0183] Optionally, step 303 may include: the first terminal device monitors SCI in the time domain resources corresponding to the first resource set, where the SCI includes SCI from the second terminal device.

[0184] It can be seen that in the above technical solution, the first terminal device that applies SL DRX can use the resources corresponding to the first resource set sent to the second terminal device as the activation time of SL DRX, or, de-enable SL DRX on the resources corresponding to the first resource set sent to the second terminal device, so that the first terminal device can monitor SCI on the resources corresponding to the first resource set, so that when the second terminal device performs SL transmission according to the first resource set, the first terminal device can receive the SCI from the second terminal device, and can subsequently receive the SL data sent from the second terminal device, which solves the problem of how to avoid affecting the communication quality between the first terminal device and the second terminal device when the first terminal device applies SL DRX.

[0185] See also Figure 4 , Figure 4 A flow chart of another communication method provided in an embodiment of the present application. Figure 4 The first terminal device in is Figure 1 The first terminal device 10 in Figure 4 The second terminal device in is Figure 1 The second terminal device 20 in the embodiment. It should be noted that Figure 4 The main description is how to obtain a resource set that meets the requirements of a second terminal device when the first terminal device applies SL DRX, and how to avoid affecting the communication quality between the first terminal device and the second terminal device when the first terminal device applies SL DRX. Figure 4 As shown, the method includes but is not limited to the following steps:

[0186] 401. The second terminal device sends a second message to the first terminal device, where the second message is used to request a second resource set, and the second resource set is used for the second terminal device to perform SL transmission. The first terminal device is a terminal device that applies SL DRX.

[0187] Correspondingly, the first terminal device receives the second message from the second terminal device.

[0188] The second message may be a PC5 RRC message, a PHY layer message or a SL MAC CE message, which is not limited here. It is understandable that the PHY layer message can be referred to. Figure 3The description of step 301 is omitted here.

[0189] Exemplarily, the second message may be, for example, an inter-UE coordination information request message.

[0190] The second resource set may include time domain resources and frequency domain resources, which are not limited here. It can be understood that the time domain resources and frequency domain resources can be referred to. Figure 3 The description of step 301 is omitted here.

[0191] Among them, the second resource set is used for SL transmission by the second terminal device, which can be understood as: the second resource set is used for SL transmission between the second terminal device and the first terminal device, that is, the second terminal device and the first terminal device use the resources corresponding to the second resource set for SL transmission. Of course, the second resource set can also be used for SL transmission between the second terminal device and other terminal devices, which is not limited here.

[0192] Optionally, step 401 may include: the second terminal device broadcasts a second message, the second message also includes a target layer 2 identifier or a target layer 1 identifier, the target layer 2 identifier or the target layer 1 identifier is used to indicate the service type corresponding to the request for the second resource set. It can be understood that if the second terminal device broadcasts the first message, the second message can be a SL MAC CE message or a PHY message.

[0193] It can be seen that in the above technical solution, the second terminal device broadcasts the second message, and the second message also includes a target layer 2 identifier or a target layer 1 identifier. The target layer 2 identifier or the target layer 1 identifier is used to indicate the service type corresponding to the requested second resource set, so that the first terminal device can determine the second resource set that needs to be obtained according to the target layer 2 identifier or the target layer 1 identifier.

[0194] Optionally, the second message may also include third indication information, and the third indication information is used to indicate that the second resource set is used for SL transmission between the second terminal device and the first terminal device; or, the third indication information is used to indicate that the second resource set is used for SL transmission between the second terminal device and a terminal device other than the second terminal device, and there is no limitation here.

[0195] Optionally, the second message may further include fourth indication information, and the fourth indication information is used to indicate a monitoring method for the first terminal device to obtain the second resource set. The monitoring method for the first terminal device to obtain the second resource set includes one or more of the following: full sensing, partial sensing, and random selection.

[0196] 402. The first terminal device disables SL DRX.

[0197] For disabling SL DRX, reference may be made to the above related description, which will not be repeated here.

[0198] Optionally, step 402 may include: the first terminal device disabling SL DRX at a first moment; wherein the first moment is determined according to the moment when the first terminal device receives the second message from the second terminal device. It can be understood that the first moment may be the moment when the first terminal device receives the second message from the second terminal device; or, the first moment may be determined according to the moment when the first terminal device receives the second message from the second terminal device and at least one time unit. For the time unit, reference may be made to the above-mentioned related description, which will not be repeated here.

[0199] Optionally, the first moment can be determined based on the moment when the first terminal device receives the second message from the second terminal device and at least one time unit, which can be understood as: the first moment is the moment corresponding to the first time unit after the moment when the first terminal device receives the second message from the second terminal device. For example, the first moment is the moment corresponding to the start of the first time unit after the moment when the first terminal device receives the second message from the second terminal device.

[0200] For example, if the time when the first terminal device receives the second message from the second terminal device is 8:00:28, a time unit is 1 minute, and the first time is the time corresponding to the start of one time unit after the time when the first terminal device receives the second message from the second terminal device, that is, the first time can be 8:01:00.

[0201] Optionally, the first terminal device disabling SL DRX at the first moment may include: the first terminal device disabling SL DRX at the first moment according to the listening mode of the second resource set acquired by the first terminal device; the first terminal device disabling SL DRX according to fourth indication information after the first moment. It can be understood that if the listening mode of the second resource set acquired by the first terminal device is full listening and / or partial listening, or the fourth indication information indicates that the listening mode of the second resource set is full listening and / or partial listening, the first terminal device disabling SL DRX at the first moment.

[0202] Optionally, the second message is a PC5 RRC message, and the RRC layer of the first terminal device instructs the MAC layer of the first terminal device to disable SL DRX; or, the second message is a physical layer message, and the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to disable SL DRX; or, the second message is a SL MAC CE message.

[0203] Among them, the RRC layer of the first terminal device instructs the MAC layer of the first terminal device to disable SL DRX, which can be understood as: at the first moment, the RRC layer of the first terminal device instructs the MAC layer of the first terminal device to disable SL DRX.

[0204] Among them, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to disable SL DRX, which can be understood as: at the first moment, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to disable SL DRX.

[0205] Optionally, step 402 may include: the first terminal device starts or restarts the first timer at a first moment, and disables SL DRX during the operation of the first timer. The duration of the first timer may be the duration configured to the first terminal device by the second terminal device through a PC5RRC message, or the duration of the first timer may be the duration configured to the first terminal device by the access network device through an RRC message, a system message or a pre-configuration message. The duration of the first timer may be, for example, predefined by a protocol and is not limited here.

[0206] Optionally, the first terminal device starts or restarts the first timer at the first moment and disabling SL DRX during the operation of the first timer, which can be replaced by: the first terminal device disabling SL DRX in a first time period, and the first time period is determined according to the first moment and the duration of the first timer.

[0207] 403. The first terminal device performs monitoring to acquire a second resource set while disabling SL DRX.

[0208] Optionally, step 403 may include: the first terminal device monitors the PSCCH to acquire the second resource set during the period of disabling SL DRX. The monitoring here may be understood as sensing, monitor, etc., which is not limited here.

[0209] Optionally, if step 402 is not performed, step 403 can be replaced by: the first terminal device starts or restarts the second timer at the first moment, and listens to the PSCCH during the operation of the second timer to obtain the second resource set. The duration of the second timer is included in the activation time of the SL DRX, that is, during the operation of the second timer, the SL DRX is in the activation time. The duration of the second timer can be the duration configured by the second terminal device to the first terminal device through the PC5 RRC message, or the duration of the second timer can be the duration configured by the access network device to the first terminal device through an RRC message, a system message or a pre-configuration message. The duration of the second timer can be, for example, predefined by the protocol and is not limited here.

[0210] Optionally, the first terminal device starts or restarts the second timer at the first moment, and listens to the PSCCH during the operation of the second timer to obtain the second resource set. This can be replaced by: the first terminal device listens to the PSCCH in a second time period to obtain the second resource set, and the second time period is determined according to the first moment and the duration of the second timer.

[0211] 404. The second terminal device receives a third message from the first terminal device, where the third message includes a second resource set.

[0212] Correspondingly, the first terminal device sends a third message to the second terminal device.

[0213] The third message may be a PC5 RRC message, a PHY layer message or a SL MAC CE message, which is not limited here. It can be understood that the PHY message may be, for example, sidelink control information (SCI), which is not limited here.

[0214] Exemplarily, the third message may be, for example, an inter-UE coordination information message.

[0215] Optionally, the first terminal device sends a third message to the second terminal device, which may include: the first terminal device broadcasts the third message, the third message also includes a destination layer 2 identifier (destination L2 ID) or a destination layer 1 identifier (destination L1 ID), and the destination layer 2 identifier or the destination layer 1 identifier is used to indicate the service type corresponding to the second resource set. It can be understood that if the first terminal device broadcasts the third message, the third message can be a SL MAC CE message or a PHY message, which is not limited here.

[0216] It can be seen that in the above technical solution, the first terminal device broadcasts the third message, and the third message also includes a target layer 2 identifier or a target layer 1 identifier. The target layer 2 identifier or the target layer 1 identifier is used to indicate the service type corresponding to the second resource set, so that the second terminal device can obtain the second resource set according to the target layer 2 identifier or the target layer 1 identifier.

[0217] Optionally, the third message may also include third indication information, and the third indication information is used to indicate that the second resource set is used for SL transmission between the second terminal device and the first terminal device; or, the third indication information is used to indicate that the second resource set is used for SL transmission between the second terminal device and a terminal device other than the second terminal device, and there is no limitation here.

[0218] It can be seen that in the above technical solution, the first terminal device that applies SL DRX can receive a message for requesting a resource set from the second terminal device, so that the first terminal device that applies SL DRX can disable SL DRX, and then perform monitoring during the period of disabling SL DRX to obtain a resource set that meets the needs of the second terminal device. At the same time, the resource set that meets the needs of the second terminal device is sent to the second terminal device, so that the second terminal device can obtain the resource set that meets the needs, which solves the problem of how to avoid affecting the communication quality of the first terminal device and the second terminal device when the first terminal device applies SL DRX.

[0219] Optionally, the method also includes: the first terminal device enables SL DRX at a second moment; wherein the second moment is determined according to the moment when the first terminal device sends a third message to the second terminal device; or, the second moment is determined according to the first moment and the first duration; or, the second moment is determined according to the moment when the first terminal device acquires the second resource set.

[0220] For enabling SL DRX, reference may be made to the above related description, which will not be repeated here.

[0221] Optionally, the second moment may be the moment when the first terminal device sends the third message to the second terminal device; or the second moment may be determined according to the moment when the first terminal device sends the third message to the second terminal device and at least one time unit. For the time unit, reference may be made to the above-mentioned related description, which will not be elaborated here.

[0222] Optionally, the second moment can be determined based on the moment when the first terminal device sends the third message to the second terminal device and at least one time unit, which can be understood as: the second moment is the moment corresponding to the first time unit after the moment when the first terminal device sends the third message to the second terminal device. For example, the second moment is the moment corresponding to the start of the first time unit after the moment when the first terminal device sends the third message to the second terminal device.

[0223] Among them, the first duration can be the duration configured by the second terminal device to the first terminal device through the PC5 RRC message, or, the first duration can be the duration configured by the access network device to the first terminal device through an RRC message, a system message or a pre-configuration message, or the first duration can be predefined by the protocol, which is not limited here.

[0224] Optionally, the second moment may be a moment when the first terminal device acquires the second resource set; or, the second moment may be determined based on a moment when the first terminal device acquires the second resource set and at least one time unit.

[0225] Optionally, the second moment can be determined based on the moment when the first terminal device acquires the second resource set and at least one time unit, which can be understood as: the second moment is the moment corresponding to the first time unit after the moment when the first terminal device acquires the second resource set. For example, the second moment is the moment corresponding to the start of the first time unit after the moment when the first terminal device acquires the second resource set.

[0226] It can be seen that in the above technical solution, the first terminal device enables SL DRX at the second moment, so that the first terminal device stops monitoring PSCCH, thereby saving energy consumption.

[0227] Optionally, the method may further include: the first terminal device enables SL DRX when the first timer times out or stops. The time when the first timer stops is determined according to the time when the first terminal device sends the third message to the second terminal device; or the time when the first timer stops is determined according to the time when the first terminal device acquires the second resource set.

[0228] Optionally, the moment when the first timer stops may be the moment when the first terminal device sends the third message to the second terminal device; or, the moment when the first timer stops may be determined based on the moment when the first terminal device sends the third message to the second terminal device and at least one time unit.

[0229] Optionally, the moment when the first timer stops can be determined based on the moment when the first terminal device sends the third message to the second terminal device and at least one time unit, which can be understood as: the moment when the first timer stops is the moment corresponding to the first time unit after the moment when the first terminal device sends the third message to the second terminal device. For example, the moment when the first timer stops is the moment corresponding to the first time unit after the moment when the first terminal device sends the third message to the second terminal device.

[0230] Optionally, the moment when the first timer stops may be the moment when the first terminal device acquires the second resource set; or, the moment when the first timer stops may be determined based on the moment when the first terminal device acquires the second resource set and at least one time unit.

[0231] Optionally, the moment when the first timer stops can be determined based on the moment when the first terminal device acquires the second resource set and at least one time unit, which can be understood as: the moment when the first timer stops is the moment corresponding to the first time unit after the moment when the first terminal device acquires the second resource set. For example, the moment when the first timer stops is the moment corresponding to the start of the first time unit after the moment when the first terminal device acquires the second resource set.

[0232] It can be seen that in the above technical solution, when the first timer times out or stops, the first terminal device enables SLDRX, so that the first terminal device stops monitoring PSCCH, thereby saving energy consumption.

[0233] Optionally, if step 403 is replaced by: the first terminal device starts or restarts the second timer at the first moment, and monitors the PSCCH during the operation of the second timer to obtain the second resource set, then the method further includes: the first terminal device enables SL DRX when the second timer times out or stops. The moment when the second timer stops is determined according to the moment when the first terminal device sends the third message to the second terminal device; or, the moment when the second timer stops is determined according to the moment when the first terminal device obtains the second resource set.

[0234] Optionally, the moment when the second timer stops may be the moment when the first terminal device sends the third message to the second terminal device; or, the moment when the second timer stops may be determined based on the moment when the first terminal device sends the third message to the second terminal device and at least one time unit.

[0235] Optionally, the moment when the second timer stops can be determined based on the moment when the first terminal device sends the third message to the second terminal device and at least one time unit, which can be understood as: the moment when the second timer stops is the moment corresponding to the first time unit after the moment when the first terminal device sends the third message to the second terminal device. For example, the moment when the second timer stops is the moment corresponding to the start of the first time unit after the moment when the first terminal device sends the third message to the second terminal device.

[0236] Optionally, the moment when the second timer stops may be the moment when the first terminal device acquires the second resource set; or, the moment when the second timer stops may be determined based on the moment when the first terminal device acquires the second resource set and at least one time unit.

[0237] Optionally, the moment when the second timer stops can be determined based on the moment when the first terminal device acquires the second resource set and at least one time unit, which can be understood as: the moment when the second timer stops is the moment corresponding to the first time unit after the moment when the first terminal device acquires the second resource set. For example, the moment when the second timer stops is the moment corresponding to the start of the first time unit after the moment when the first terminal device acquires the second resource set.

[0238] It can be seen that in the above technical solution, when the second timer times out or stops, the first terminal device enables SLDRX, so that the first terminal device stops monitoring PSCCH, thereby saving energy consumption.

[0239] See also Figure 5 , Figure 5A flow chart of another communication method provided in an embodiment of the present application. Figure 5 The first terminal device in is Figure 1 The first terminal device 10 in Figure 5 The second terminal device in is Figure 1 The second terminal device 20 in the embodiment. It should be noted that Figure 5 The main description is how to obtain a resource set that meets the requirements of a second terminal device when the first terminal device applies SL DRX, and how to avoid affecting the communication quality between the first terminal device and the second terminal device when the first terminal device applies SL DRX. Figure 5 As shown, the method includes but is not limited to the following steps:

[0240] 501. With Figure 4 The same as step 401 in FIG. 1 and will not be described in detail here.

[0241] 502. The first terminal device determines the activation time of SL DRX according to the second message.

[0242] Optionally, step 502 may include: the second message also includes first indication information, the first indication information is used to indicate the time when the first terminal device performs monitoring; the time when the first terminal device performs monitoring is used as the activation time of SL DRX. The first indication information is used to indicate the time when the first terminal device performs monitoring, which can be understood as: the first indication information is used to indicate the time when the first terminal device monitors PSCCH. The time when the first terminal device monitors PSCCH can be included in the activation time of SLDRX.

[0243] Optionally, step 502 can be replaced by: the first terminal device determines the activation time of SL DRX based on one or more of the following information also included in the second message: transmission priority information of the second terminal device, transmission cycle information of the second terminal device, transmission message size of the second terminal device, and resource pool information used for transmission of the second terminal device.

[0244] Among them, the correspondence between one or more of the transmission priority information of the second terminal device, the transmission cycle information of the second terminal device, the transmission message size of the second terminal device, the resource pool information used for transmission of the second terminal device and the SL DRX activation time can be configured by the second terminal device through a PC5 RRC message; or, the correspondence between one or more of the transmission priority information of the second terminal device, the transmission cycle information of the second terminal device, the transmission message size of the second terminal device, the resource pool information used for transmission of the second terminal device and the SL DRX activation time can be configured by the access network device through an RRC message, a system message or a pre-configuration message; or, the correspondence between one or more of the transmission priority information of the second terminal device, the transmission cycle information of the second terminal device, the transmission message size of the second terminal device, the resource pool information used for transmission of the second terminal device and the SL DRX activation time can be predefined by the protocol.

[0245] Optionally, the second message is a PC5 RRC message, and the RRC layer of the first terminal device indicates the activation time of SL DRX to the MAC layer of the first terminal device; or, the second message is a PHY layer message, and the PHY layer of the first terminal device indicates the activation time of SL DRX to the MAC layer of the first terminal device; or, the second message is a SL MAC CE message.

[0246] 503. The first terminal device performs monitoring at the activation time of SL DRX to obtain a second resource set.

[0247] Optionally, step 502 may not be performed, and the activation time of the SL DRX in step 503 may be determined based on the current activation time of the SL DRX of the first terminal device. Specifically, the activation time of the SL DRX in step 503 may be a time that is at least one time unit ahead of the start time corresponding to the current activation time of the SL DRX of the first terminal device and / or at least one time unit behind the end time. The current activation time of the SL DRX of the first terminal device may be a predefined time, or the activation time of the SL DRX before the first terminal device receives the second message from the second terminal device, which is not limited here.

[0248] Exemplarily, the activation time of the SL DRX in step 503 may be N time units ahead of the start time corresponding to the current activation time of the SL DRX of the first terminal device, or, the activation time of the SL DRX in step 503 may be M time units behind the end time corresponding to the current activation time of the SL DRX of the first terminal device, or, the activation time of the SL DRX in step 503 may be N time units ahead of the start time corresponding to the current activation time of the SL DRX of the first terminal device and M time units behind the end time. N and M may be configured by the second terminal device or predefined by the protocol. It can be understood that N and M are positive integers greater than or equal to 1.

[0249] 504. With Figure 4 The same as step 404 in FIG. 1 and will not be described in detail here.

[0250] Correspondingly, the first terminal device sends a fourth message to the second terminal device.

[0251] It can be seen that in the above technical solution, the first terminal device that applies SL DRX can receive a message for requesting a resource set from the second terminal device, so that the first terminal device that applies SL DRX can determine the activation time of SL DRX according to the message for requesting a resource set received from the second terminal device, and then perform monitoring at the activation time of SL DRX to compete for a resource set that meets the needs of the second terminal device. At the same time, the resource set that meets the needs of the second terminal device is sent to the second terminal device, so that the second terminal device can obtain the resource set that meets the needs, which solves the problem of how to avoid affecting the communication quality of the first terminal device and the second terminal device when the first terminal device applies SL DRX.

[0252] See also Figure 6 , Figure 6 A flow chart of another communication method provided in an embodiment of the present application. Figure 6 The first terminal device in is Figure 1 The first terminal device 10 in Figure 6 The second terminal device in is Figure 1 The second terminal device 20 in the embodiment. It should be noted that Figure 6 The main description is how to solve the problem of how to receive the channel state information report sent by the second terminal device to the first terminal device when the first terminal device applies SL DRX, and how to avoid the communication quality between the first terminal device and the second terminal device from being affected when the first terminal device applies SL DRX. Figure 6 As shown, the method includes but is not limited to the following steps:

[0253] 601. The second terminal device receives a fourth message from the first terminal device, where the fourth message is used to request a channel state information report, and the first terminal device is a terminal device that applies SL DRX.

[0254] Correspondingly, the first terminal device sends a fourth message to the second terminal device.

[0255] Optionally, the fourth message is a PHY layer message.

[0256] The fourth message may be, for example, a channel state information report trigger (CSI reporting trigger) message or other messages, which are not limited here.

[0257] It should be noted that in the present application, the channel state information report can be understood as: SL channel state information report.

[0258] 602. The first terminal device disables SL DRX.

[0259] Optionally, step 602 may include: the first terminal device disabling SL DRX at a third moment; wherein the third moment is determined according to the moment when the first terminal device sends a fourth message to the second terminal device. It can be understood that the third moment may be the moment when the first terminal device sends the fourth message to the second terminal device, or the third moment may be determined according to the moment when the first terminal device sends the fourth message to the second terminal device and at least one time unit.

[0260] Optionally, the third moment can be determined based on the moment when the first terminal device sends the fourth message to the second terminal device and at least one time unit, which can be understood as: the third moment is the moment corresponding to the first time unit after the moment when the first terminal device sends the fourth message to the second terminal device. The third moment is the moment corresponding to the start of the first time unit after the moment when the first terminal device sends the fourth message to the second terminal device.

[0261] Optionally, the method further includes: the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to disable SL DRX. Wherein, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to disable SL DRX, which can be understood as: at the third moment, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to disable SL DRX.

[0262] Optionally, step 602 may include: the first terminal device starts or restarts the third timer at a third moment, and disables SL DRX during the operation of the third timer. The duration of the third timer may be the duration configured by the second terminal device to the first terminal device through a PC5RRC message, or the duration of the third timer may be the duration configured by the access network device to the first terminal device through an RRC message, a system message or a pre-configuration message, or the duration of the third timer may be predefined by the protocol, or the duration of the third timer may be a sidelink channel state information report delay boundary (sl-LatencyBound-CSI-Report), which is not limited here.

[0263] Optionally, the method further includes: the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to start or restart the third timer. Wherein, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to start or restart the third timer, which can be understood as: at the third moment, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to start or restart the third timer.

[0264] Optionally, the first terminal device starts or restarts a third timer at a third moment, and disabling SL DRX during the operation of the third timer, which can be replaced by: the first terminal device disabling SL DRX in a third time period, and the third time period is determined according to the third moment and the duration of the third timer.

[0265] Optionally, step 602 may include: the first terminal device starts or restarts the fourth timer at the third moment, and disables SL DRX after the fourth timer times out. The duration of the fourth timer may be the duration configured to the first terminal device by the second terminal device through a PC5RRC message, or the duration of the fourth timer may be the duration configured to the first terminal device by the access network device through an RRC message, a system message or a pre-configuration message. The duration of the fourth timer may be, for example, predefined by a protocol and is not limited here.

[0266] Optionally, the method further includes: the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to start or restart the fourth timer. Wherein, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to start or restart the fourth timer, which can be understood as: at the third moment, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to start or restart the fourth timer.

[0267] Optionally, step 602 may include: the first terminal device starts or restarts the fifth timer at the third moment, starts or restarts the sixth timer after the fifth timer times out, and disables SL DRX during the operation of the sixth timer. The duration of the fifth timer may be the duration configured by the second terminal device to the first terminal device via a PC5 RRC message, or the duration of the fifth timer may be the duration configured by the access network device to the first terminal device via an RRC message, a system message, or a pre-configuration message. The duration of the fifth timer may be, for example, predefined by the protocol, and is not limited here. The duration of the sixth timer may be the duration configured by the second terminal device to the first terminal device via a PC5 RRC message, or the duration of the sixth timer may be the duration configured by the access network device to the first terminal device via an RRC message, a system message, or a pre-configuration message. The duration of the sixth timer may be, for example, predefined by the protocol, and is not limited here.

[0268] Optionally, the sum of the duration of the fifth timer and the duration of the sixth timer may be predefined by sl-LatencyBound-CSI-Report or the protocol and is not limited here.

[0269] Optionally, the method further includes: the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to start or restart the fifth timer. Wherein, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to start or restart the fifth timer, which can be understood as: at the third moment, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to start or restart the fifth timer.

[0270] 603. The first terminal device monitors the SCI during the period of disabling SL DRX to receive a channel state information report from the second terminal device.

[0271] Optionally, step 603 may include: the first terminal device monitors the SCI carried on the PSCCH and / or PSSCH during the disabling of SL DRX to receive a channel state information report from the second terminal device.

[0272] Optionally, the channel state information report in step 603 may be carried in a SLMAC CE, and the first terminal device monitors the SCI carried on the PSCCH and / or PSSCH during the period of disabling SL DRX to receive the SLMAC CE from the second terminal device.

[0273] It can be seen that in the above technical solution, the first terminal device that applies SL DRX can send a message requesting a channel state information report to the second terminal device, and disable SL DRX, so that the first terminal device listens to SCI during the period of disabling SL DRX and can then receive the channel state information report from the second terminal device, which solves the problem of how to avoid affecting the communication quality between the first terminal device and the second terminal device when the first terminal device applies SL DRX.

[0274] Optionally, the method also includes: the first terminal device enables SL DRX at a fourth moment; wherein the fourth moment is determined according to the moment when the first terminal device receives a channel state information report from the second terminal device; or, the fourth moment is determined according to the third moment and the second duration.

[0275] The fourth moment may be the moment when the first terminal device receives the channel state information report from the second terminal device, or the fourth moment may be determined based on the moment when the first terminal device receives the channel state information report from the second terminal device and at least one time unit.

[0276] Optionally, the fourth moment may be determined based on the moment when the first terminal device receives the channel state information report from the second terminal device and at least one time unit, which may be understood as follows: the fourth moment may be the moment corresponding to the first time unit after the moment when the first terminal device receives the channel state information report from the second terminal device. For example, the fourth moment may be the moment corresponding to the start of the first time unit after the moment when the first terminal device receives the channel state information report from the second terminal device.

[0277] Among them, the second duration can be the duration configured by the second terminal device to the first terminal device through the PC5 RRC message, or the second duration can be the duration configured by the access network device to the first terminal device through an RRC message, a system message or a pre-configuration message. The second duration can be, for example, predefined by the protocol and is not limited here.

[0278] It can be seen that in the above technical solution, the first terminal device enables SL DRX at the fourth moment, so that the first terminal device stops monitoring SCI, thereby saving energy consumption.

[0279] Optionally, the method further includes: the first terminal device enabling SLDRX when the third timer times out or stops. The time when the third timer stops is determined according to the time when the first terminal device receives the channel state information report from the second terminal device.

[0280] The time when the third timer stops can be the time when the first terminal device receives the channel state information report from the second terminal device, or the time when the third timer stops can be determined based on the time when the first terminal device receives the channel state information report from the second terminal device and at least one time unit.

[0281] Optionally, the time when the third timer stops can be determined based on the time when the first terminal device receives the channel state information report from the second terminal device and at least one time unit, which can be understood as: the time when the third timer stops is the time corresponding to the first time unit after the time when the first terminal device receives the channel state information report from the second terminal device. For example, the time when the third timer stops is the time corresponding to the start of the first time unit after the time when the first terminal device receives the channel state information report from the second terminal device.

[0282] It can be seen that in the above technical solution, the first terminal device enables SL DRX when the third timer times out or stops, so that the first terminal device stops monitoring SCI, thereby saving energy consumption.

[0283] Optionally, the method further includes: the first terminal device enabling SLDRX when the sixth timer times out or stops. The time when the sixth timer stops is determined according to the time when the first terminal device receives the channel state information report from the second terminal device.

[0284] The moment when the sixth timer stops can be the moment when the first terminal device receives the channel state information report from the second terminal device, or the moment when the sixth timer stops can be determined based on the moment when the first terminal device receives the channel state information report from the second terminal device and at least one time unit.

[0285] Optionally, the time when the sixth timer stops can be determined based on the time when the first terminal device receives the channel state information report from the second terminal device and at least one time unit, which can be understood as: the time when the sixth timer stops is the time corresponding to the first time unit after the time when the first terminal device receives the channel state information report from the second terminal device. For example, the time when the sixth timer stops is the time corresponding to the start of the first time unit after the time when the first terminal device receives the channel state information report from the second terminal device.

[0286] It can be seen that in the above technical solution, the first terminal device enables SL DRX when the sixth timer times out or stops, so that the first terminal device stops monitoring SCI, thereby saving energy consumption.

[0287] Optionally, the method also includes: the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to enable SLDRX.

[0288] Among them, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to enable SL DRX, which can be understood as: at the fourth moment, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to enable SL DRX.

[0289] See also Figure 7 , Figure 7 A flow chart of another communication method provided in an embodiment of the present application. Figure 7 The first terminal device in is Figure 1 The first terminal device 10 in Figure 7 The second terminal device in is Figure 1 The second terminal device 20 in the embodiment. It should be noted that Figure 7 The main description is how to solve the problem of how to receive the channel state information report sent by the second terminal device to the first terminal device when the first terminal device applies SL DRX, and how to avoid the communication quality between the first terminal device and the second terminal device from being affected when the first terminal device applies SL DRX. Figure 7 As shown, the method includes but is not limited to the following steps:

[0290] 701. The second terminal device receives a fourth message from the first terminal device, where the fourth message is used to request a channel state information report, and the first terminal device is a terminal device that applies the first SL DRX.

[0291] Correspondingly, the first terminal device sends a fourth message to the second terminal device.

[0292] Optionally, the fourth message is a PHY layer message.

[0293] The fourth message may be, for example, a channel state information report trigger (CSI reporting trigger) message or other messages, which are not limited here.

[0294] 702. The first terminal device applies the second SL DRX.

[0295] Correspondingly, the second terminal device may also apply the second SL DRX.

[0296] Exemplarily, the second SL DRX may be a SL CSI reporting DRX.

[0297] Among them, the activation time corresponding to the first terminal device applying the first SL DRX is different from the activation time corresponding to the first terminal device applying the second SL DRX.

[0298] Exemplarily, the activation time corresponding to the first terminal device applying the first SL DRX is included in the activation time corresponding to the first terminal device applying the second SL DRX; or, the sleep time corresponding to the first terminal device applying the first SL DRX and the activation time corresponding to the first terminal device applying the second SL DRX partially or completely overlap.

[0299] Optionally, step 702 may include: the first terminal device applies the second SL DRX at a third moment. The third moment may refer to Figure 6 The description of step 602 is omitted here.

[0300] Optionally, the method further includes: the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to apply the second SL DRX. Wherein, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to apply the second SL DRX, which can be understood as: at the third moment, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to apply the second SL DRX.

[0301] Optionally, step 702 may include: the first terminal device starts or restarts a third timer at a third time, and applies the second SL DRX during the running of the third timer. Figure 6 The description of step 602 is omitted here.

[0302] Optionally, the method further includes: the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to start or restart the third timer. Wherein, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to start or restart the third timer, which can be understood as: at the third moment, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to start or restart the third timer.

[0303] Optionally, the first terminal device starts or restarts the third timer at the third moment, and applies the second SL DRX during the operation of the third timer, which can be replaced by: the first terminal device applies the second SL DRX in a third time period, and the third time period is determined according to the third moment and the duration of the third timer.

[0304] Optionally, step 702 may include: the first terminal device starts or restarts a fourth timer at the third time, and applies the second SL DRX after the fourth timer times out. The duration of the fourth timer may refer to Figure 6 The description of step 602 is omitted here.

[0305] Optionally, the method further includes: the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to start or restart the fourth timer. Wherein, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to start or restart the fourth timer, which can be understood as: at the third moment, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to start or restart the fourth timer.

[0306] Optionally, step 702 may include: the first terminal device starts or restarts a fifth timer at the third time, starts or restarts a sixth timer after the fifth timer times out, and applies the second SL DRX during the sixth timer. The duration of the fifth timer and the duration of the sixth timer can be referred to Figure 6 The description of step 602 is omitted here.

[0307] Optionally, the method further includes: the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to start or restart the fifth timer. Wherein, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to start or restart the fifth timer, which can be understood as: at the third moment, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to start or restart the fifth timer.

[0308] Optionally, step 702 can be replaced by: the first terminal device determines that it is in the activation time of the second SLDRX within the third time period, the start time of the third time period is determined according to the third time and the third duration, and the end time of the third time period is the end time of sl-LatencyBound-CSI-Report. The third duration can be configured by the second terminal device to the first terminal device through the PC5 RRC message, or predefined by the protocol, which is not limited here.

[0309] 703. The first terminal device monitors the SCI during application of the second SL DRX to receive a channel state information report from the second terminal device.

[0310] Optionally, step 703 may include: the first terminal device monitors the SCI carried on the PSCCH and / or PSSCH during the application of the second SL DRX to receive a channel state information report from the second terminal device.

[0311] Optionally, the channel state information report in step 703 may be carried in a SL MAC CE, and the first terminal device monitors the SCI carried on the PSCCH and / or PSSCH during application of the second SL DRX to receive the SL MAC CE from the second terminal device.

[0312] It can be seen that in the above technical solution, the first terminal device that applies the first SL DRX can send a message requesting a channel state information report to the second terminal device, and apply the second SL DRX, so that the first terminal device monitors the SCI during the application of the second SL DRX and can receive the channel state information report from the second terminal device, solving the problem of how to avoid the communication quality of the first terminal device and the second terminal device being affected when the first terminal device applies SL DRX. At the same time, since the first terminal device that applies the second SL DRX is not fully listening, energy consumption is saved.

[0313] Optionally, the method also includes: the first terminal device applies the first SL DRX at a fourth moment; wherein the fourth moment is determined according to the moment when the first terminal device receives the channel state information report from the second terminal device; or, the fourth moment is determined according to the third moment and the second duration.

[0314] Among them, the fourth moment can refer to Figure 6 The description of step 603 is omitted here.

[0315] Among them, the second duration can be the duration configured by the second terminal device to the first terminal device through the PC5 RRC message, or the second duration can be the duration configured by the access network device to the first terminal device through an RRC message, a system message or a pre-configuration message. The second duration can be, for example, predefined by the protocol and is not limited here.

[0316] It can be seen that in the above technical solution, the first terminal device applies the first SL DRX at the fourth moment, so that the first terminal device stops monitoring the SCI, thereby saving energy consumption.

[0317] Optionally, the method further includes: the first terminal device applies the first SL DRX when the third timer times out or stops. The time when the third timer stops is determined according to the time when the first terminal device receives the channel state information report from the second terminal device.

[0318] The time when the third timer stops can be referred to Figure 6 The description of step 603 is omitted here.

[0319] It can be seen that in the above technical solution, the first terminal device applies the first SL DRX when the third timer times out or stops, so that the first terminal device stops monitoring the SCI, thereby saving energy consumption.

[0320] Optionally, the method further includes: the first terminal device applies the first SL DRX when the sixth timer times out or stops. The time when the sixth timer stops is determined according to the time when the first terminal device receives the channel state information report from the second terminal device.

[0321] The time when the sixth timer stops can be referred to Figure 6 The description of step 603 is omitted here.

[0322] It can be seen that in the above technical solution, the first terminal device applies the first SL DRX when the sixth timer times out or stops, so that the first terminal device stops monitoring the SCI, thereby saving energy consumption.

[0323] Optionally, the method also includes: the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to apply the first SL DRX.

[0324] Among them, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to apply the first SL DRX, which can be understood as: at the fourth moment, the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to apply the first SL DRX.

[0325] See also Figure 8 , Figure 8 A flow chart of another communication method provided in an embodiment of the present application. Figure 8 The first terminal device in is Figure 1 The first terminal device 10 in Figure 8 The second terminal device in is Figure 1 The second terminal device 20 in Figure 8 The access network equipment in Figure 1 The access network device 30 in the embodiment of the present invention. Figure 8 The article mainly describes how to use the access network device to solve the problem of how to obtain a resource set that meets the needs of the second terminal device when the first terminal device applies SL DRX, and also solves the problem of how to avoid affecting the communication quality between the first terminal device and the second terminal device when the first terminal device applies SL DRX. Figure 8 As shown, the method includes but is not limited to the following steps:

[0326] 801. The second terminal device sends a second message to the first terminal device, where the second message is used to request a second resource set, and the second resource set is used for the second terminal device to perform SL transmission. The second message also includes one or more of the following: transmission priority information of the second terminal device, transmission cycle information of the second terminal device, transmission message size of the second terminal device, and resource pool information used for transmission by the second terminal device. The first terminal device is a terminal device that applies SL DRX.

[0327] Correspondingly, the first terminal device receives the second message from the second terminal device.

[0328] The second message may be a PC5 RRC message, a PHY layer message or a SL MAC CE message, which is not limited here. It is understandable that the PHY layer message can be referred to. Figure 3 The description of step 301 is omitted here.

[0329] Exemplarily, the second message may be, for example, an inter-UE coordination information request message.

[0330] The second resource set may include time domain resources and frequency domain resources, which are not limited here. It can be understood that the time domain resources and frequency domain resources can be referred to. Figure 3 The description of step 301 is omitted here.

[0331] Among them, the second resource set is used for SL transmission by the second terminal device, which can be understood as: the second resource set is used for SL transmission between the second terminal device and the first terminal device, that is, the second terminal device and the first terminal device use the resources corresponding to the second resource set for SL transmission. Of course, the second resource set can also be used for SL transmission between the second terminal device and other terminal devices without limitation.

[0332] Optionally, step 801 may include: the second terminal device broadcasts a second message, the second message also includes a target layer 2 identifier or a target layer 1 identifier, the target layer 2 identifier or the target layer 1 identifier is used to indicate the service type corresponding to the request for the second resource set. It can be understood that if the second terminal device broadcasts the first message, the second message can be a SL MAC CE message or a PHY message.

[0333] It can be seen that in the above technical solution, the second terminal device broadcasts the second message, and the second message also includes a target layer 2 identifier or a target layer 1 identifier. The target layer 2 identifier or the target layer 1 identifier is used to indicate the service type corresponding to the requested second resource set, so that the first terminal device can determine the second resource set that needs to be obtained according to the target layer 2 identifier or the target layer 1 identifier.

[0334] Optionally, the second message may also include third indication information, and the third indication information is used to indicate that the second resource set is used for SL transmission between the second terminal device and the first terminal device; or, the third indication information is used to indicate that the second resource set is used for SL transmission between the second terminal device and a terminal device other than the second terminal device, and there is no limitation here.

[0335] 802. The first terminal device sends one or more of the following information to the access network device: transmission priority information of the second terminal device, transmission cycle information of the second terminal device, transmission message size of the second terminal device, and resource pool information used by the second terminal device for transmission.

[0336] Correspondingly, the access network device receives one or more of the following information from the first terminal device: transmission priority information of the second terminal device, transmission cycle information of the second terminal device, transmission message size of the second terminal device, and resource pool information used by the second terminal device for transmission.

[0337] Optionally, the first terminal device sends one or more of the following information to the access network device: transmission priority information of the second terminal device, transmission cycle information of the second terminal device, transmission message size of the second terminal device, and resource pool information used for transmission by the second terminal device, which may include: the first terminal device sends one or more of the following information to the access network device through a scheduling request (schedulingrequest, SR) or a buffer status report (buffersatusrport, SR): transmission priority information of the second terminal device, transmission cycle information of the second terminal device, transmission message size of the second terminal device, and resource pool information used for transmission by the second terminal device.

[0338] It should be noted that, in the present application, a scheduling request can be understood as an SL scheduling request; a buffer status report can be understood as an SL buffer status report.

[0339] 803. The access network device sends a third resource set to the first terminal device, where the third resource set is determined based on information received from the first terminal device.

[0340] The third resource set may include time domain resources and frequency domain resources, which are not limited here. It can be understood that the time domain resources and frequency domain resources can be referred to. Figure 3 The description of step 301 is omitted here.

[0341] It can be understood that the information received by the first terminal device may include one or more of the following information: transmission priority information of the second terminal device, transmission cycle information of the second terminal device, transmission message size of the second terminal device, and resource pool information used by the second terminal device for transmission.

[0342] 804. With Figure 4 The same as step 404 in FIG. 1 and will not be described in detail here.

[0343] It can be seen that in the above technical solution, the first terminal device that applies SL DRX can receive a message for requesting a resource set from the second terminal device, so that the first terminal device that applies SL DRX can send information for determining a resource set to the access network device. Since the information for determining the resource set comes from the second terminal device, the access network device can obtain a resource set that meets the needs of the second terminal device. At the same time, the first terminal device that applies SL DRX can obtain a resource set that meets the needs of the second terminal device from the access network device, and send the resource set that meets the needs of the second terminal device to the second terminal device, so that the second terminal device can obtain a resource set that meets the needs, which solves the problem of how to avoid affecting the communication quality between the first terminal device and the second terminal device when the first terminal device applies SL DRX.

[0344] Optionally, the method also includes: if a preset condition is met, the first terminal device enters the RRC connected state after receiving the second message; the preset condition includes: the first terminal device is in the RRC idle state; or, the first terminal device is in the RRC inactive state; or, the first terminal device is in a network uncovered area state.

[0345] Optionally, the first terminal device enters the RRC connection state after receiving the second message, which may include: after the first terminal device receives the second message, if the resource set that meets the requirements of the second terminal device is not obtained, it enters the RRC connection state.

[0346] It should be noted that in this application, Figure 3-Figure 8 In the embodiments involved, any combination of the embodiments belongs to the protection scope of the present invention.

[0347] The above mainly introduces the solution provided by the present application from the perspective of the interaction between various network elements. It can be understood that in order to realize the above functions, the above-mentioned network elements include hardware structures and / or software modules corresponding to the execution of various functions. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed in this document, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in hardware or in a computer software-driven hardware manner depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0348] The embodiment of the present application can divide the functional modules of the first terminal device according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0349] In the case of integrated units, see Fig. 9 , Fig. 9 A schematic diagram of the structure of a communication device provided in an embodiment of the present application. The communication device 900 can be applied to the above Figure 3-Figure 8 In the method shown, Fig. 9 As shown, the communication device 900 includes: a processing module 901 and a transceiver module 902. The processing module 901 can be one or more processors, and the transceiver module 902 can be a transceiver or a communication interface. The communication device can be used to implement the first terminal device involved in any of the above method embodiments, or to implement the function of the network element involved in any of the above method embodiments. The network element or network function can be a network element in a hardware device, a software function running on dedicated hardware, or a virtualization function instantiated on a platform (for example, a cloud platform). Optionally, the communication device 900 may also include a storage module 903 for storing program code and data of the communication device 900.

[0350] In one example, when the communication device is used as a first terminal device or a chip used in a first terminal device, and executes the steps performed by the first terminal device in the above method embodiment. The transceiver module 902 is used to support communication with a second terminal device or an access network device, etc., and the transceiver module specifically performs Figure 3-Figure 8 The processing module 901 can be used to support the communication device 900 to perform the processing actions in the above method embodiment, for example, support the first terminal device to perform one or more steps in step 302 and step 303, and / or other processes of the technology described herein.

[0351] It should be noted that in this application, when the communication device 900 is applied to Figure 3-Figure 6 or Figure 8 In the method shown, the communication device 900 may be a first terminal device to which SL DRX is applied or a chip in the first terminal device to which SL DRX is applied. Figure 7In the method shown, the communication device 900 may be a first terminal device to which the first SL DRX is applied or a chip in the first terminal device to which the first SL DRX is applied.

[0352] In a possible implementation, when the first terminal device is a chip, the transceiver module 902 may be an interface, a pin or a circuit, etc. The interface may be used to input data to be processed to the processor, and may output the processing result of the processor to the outside. In a specific implementation, the interface may be a general purpose input output (GPIO) interface, which may be connected to multiple peripheral devices (such as a display (LCD), a camera (camara), a radio frequency (RF) module, an antenna, etc.). The interface is connected to the processor via a bus.

[0353] The processing module 901 may be a processor that can execute computer-executable instructions stored in the storage module to enable the chip to execute Figures 3 to 8 Embodiments relate to methods.

[0354] Furthermore, the processor may include a controller, an arithmetic unit and a register. Exemplarily, the controller is mainly responsible for instruction decoding and sends control signals for operations corresponding to the instructions. The arithmetic unit is mainly responsible for performing fixed-point or floating-point arithmetic operations, shift operations, and logical operations, etc., and may also perform address operations and conversions. The register is mainly responsible for storing register operands and intermediate operation results temporarily stored during the execution of instructions. In a specific implementation, the hardware architecture of the processor may be an application specific integrated circuit (ASIC) architecture, a microprocessor without interlocked piped stages architecture (MIPS) architecture, an advanced RISC machines (ARM) architecture, or a network processor (NP) architecture, etc. The processor may be single-core or multi-core.

[0355] The storage module may be a storage module within the chip, such as a register, a cache, etc. The storage module may also be a storage module located outside the chip, such as a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM), etc.

[0356] It should be noted that the functions corresponding to the processor and the interface can be implemented through hardware design, software design, or a combination of hardware and software, and there is no limitation here.

[0357] Fig.10 This is a simplified schematic diagram of the structure of a terminal device provided in an embodiment of the present application. For ease of understanding and illustration, Fig.10 In the example of terminal device, mobile phone is used as an example. It is understandable that Fig.10 The terminal device involved may be a first terminal device or a second terminal device, which is not limited here. Fig.10 As shown, the terminal device includes at least one processor, and may also include a radio frequency circuit, an antenna, and an input / output device. Among them, the processor can be used to process the communication protocol and the communication data, and can also be used to control the terminal device, execute the software program, process the data of the software program, etc. The terminal device may also include a memory, which is mainly used to store software programs and data. These programs involved can be loaded into the memory when the communication device leaves the factory, or loaded into the memory when needed later. The radio frequency circuit is mainly used for conversion between baseband signals and radio frequency signals and processing of radio frequency signals. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves, and the antenna is the antenna provided in the embodiment of the present application. Input / output devices, such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal devices may not have input / output devices.

[0358] When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs the baseband signal to the RF circuit. The RF circuit performs RF processing on the baseband signal and then sends the RF signal outward in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data. For ease of explanation, Fig.10 Only one memory and processor are shown. In an actual terminal device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device. The memory may be set independently of the processor or may be integrated with the processor, and the embodiments of the present application do not limit this.

[0359] In the embodiments of the present application, the antenna and the radio frequency circuit with transceiver functions may be regarded as the receiving unit and the sending unit of the terminal device (also collectively referred to as the transceiver unit), and the processor with processing function may be regarded as the processing unit of the terminal device. Fig.10As shown, the terminal device includes a receiving module 31, a processing module 32 and a sending module 33. The receiving module 31 may also be called a receiver, a receiver, a receiving circuit, etc., and the sending module 33 may also be called a transmitter, a transmitter, a transmitter, a transmitting circuit, etc. The processing module 32 may also be called a processor, a processing board, a processing device, etc.

[0360] For example, the processing module 32 is used to execute Figure 3-Figure 8 The function of the first terminal device in any of the embodiments shown.

[0361] Fig.11 A simplified structural diagram of an access network device provided for an embodiment of the present application. The access network device includes a radio frequency signal transceiving and conversion part and a part 42, and the radio frequency signal transceiving and conversion part further includes a receiving module part 41 and a sending module part 43 (also collectively referred to as a transceiver module). The radio frequency signal transceiving and conversion part is mainly used for the transceiving of radio frequency signals and the conversion of radio frequency signals and baseband signals; part 42 is mainly used for baseband processing, controlling the access network device, etc. The receiving module 41 can also be called a receiver, a receiver, a receiving circuit, etc., and the sending module 43 can also be called a transmitter, a transmitter, a transmitter, a transmitting circuit, etc. Part 42 is usually the control center of the access network device, which can usually be called a processing module, which is used to control the access network device to perform the above-mentioned Figure 3-Figure 8 The steps performed by the terminal device or access network device in the description are as follows. For details, please refer to the description of the relevant parts above.

[0362] Part 42 may include one or more boards, each of which may include one or more processors and one or more memories, and the processor is used to read and execute the program in the memory to realize the baseband processing function and the control of the access network device. If there are multiple boards, each board can be interconnected to increase the processing capacity. As an optional implementation, multiple boards may share one or more processors, or multiple boards may share one or more memories, or multiple boards may share one or more processors at the same time.

[0363] For example, for the access network device, the sending module 43 is used to execute Figure 3-Figure 8 The functions of the access network device in any of the embodiments shown.

[0364] The embodiment of the present application also provides a communication device, including a processor, a memory, an input interface and an output interface, wherein the input interface is used to receive information from other communication devices other than the first device, and the output interface is used to output information to other communication devices other than the first device, and the processor calls a computer program stored in the memory to implement Figure 3-Figure 8 Any of the embodiments shown.

[0365] The present application also provides a computer-readable storage medium, in which a computer program is stored. When the computer program is executed, the following is achieved: Figure 3-Figure 8 Any of the embodiments shown.

[0366] The present application also provides a computer program product, which, when read and executed by a computer, enables the computer to implement Figure 3-Figure 8 Any of the embodiments shown.

[0367] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above description is only the specific implementation methods of the present application and is not intended to limit the scope of protection of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the present application should be included in the scope of protection of the present application.

Claims

1. A communication method, characterized in that: The method is applied to a first terminal device, where the first terminal device is a terminal device to which sidelink SL discontinuous reception DRX is applied, and the method includes: Sending a first message to a second terminal device, where the first message includes a first resource set, and the first resource set is used for the second terminal device to perform SL transmission; Using resources corresponding to the first resource set as the activation time of the SL DRX; or, disabling the SL DRX on the resources corresponding to the first resource set; Monitoring side link control information SCI at the resources corresponding to the first resource set, where the SCI includes SCI from the second terminal device; The resources corresponding to the first resource set include the time domain resources corresponding to the first resource set, and the time domain resources corresponding to the first resource set overlap with the sleep time of the SL DRX.

2. The method according to claim 1, characterized in that The sending the first message to the second terminal device includes: broadcasting the first message; The first message further includes a target layer 2 identifier or a target layer 1 identifier, and the target layer 2 identifier or the target layer 1 identifier is used to indicate a service type corresponding to the first resource set.

3. The method according to claim 1 or 2, characterized in that: The first message is a PC5 radio resource control RRC message, and the RRC layer of the first terminal device indicates the activation time corresponding to the first resource set to the media access control MAC layer of the first terminal device, or disables the SL DRX; or, The first message is a physical PHY layer message, and the PHY layer of the first terminal device indicates the activation time corresponding to the first resource set to the MAC layer of the first terminal device, or disables the SL DRX; or, The first message is a SL MAC control unit CE message.

4. The method according to claim 3, characterized in that The method further comprises: receiving a second message from a second terminal device, where the second message is used to request the first resource set; Disabling the SL DRX; Monitoring is performed to acquire the first resource set during disabling the SL DRX.

5. The method according to claim 4, characterized in that The disabling of the SL DRX comprises: De-enabling the SL DRX at a first moment; The first moment is determined according to the moment when the first terminal device receives the second message from the second terminal device.

6. The method according to claim 4 or 5, characterized in that: The second message is a PC5 radio resource control RRC message, and the RRC layer of the first terminal device instructs the media access control MAC layer of the first terminal device to disable SL DRX; or, The second message is a physical layer PHY message, and the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to disable SL DRX; or, The second message is a SL MAC control element CE message.

7. The method according to claim 4 or 5, characterized in that: The method further comprises: At a second moment, enabling the SL DRX; The second moment is determined according to the moment when the first terminal device sends the first message to the second terminal device; or, The second moment is determined according to the first moment and the first duration, and the first moment is determined according to the moment when the first terminal device receives the second message from the second terminal device; or, The second moment is determined according to the moment when the first terminal device acquires the first resource set.

8. The method according to claim 3, characterized in that The method further comprises: receiving a second message from a second terminal device, where the second message is used to request the first resource set; determining an activation time of the SL DRX according to the second message; Monitoring is performed at the activation time of the SL DRX to acquire the first resource set.

9. The method according to claim 8, characterized in that The determining, according to the second message, the activation time of the SL DRX comprises: The second message also includes first indication information, where the first indication information is used to indicate a time for the first terminal device to perform monitoring; The time when the first terminal device performs monitoring is used as the activation time of the SL DRX.

10. The method according to claim 8 or 9, characterized in that: The second message is a PC5 radio resource control RRC message, and the RRC layer of the first terminal device indicates the activation time of the SL DRX to the media access control MAC layer of the first terminal device; or, The second message is a physical PHY layer message, and the PHY layer of the first terminal device indicates the activation time of the SL DRX to the MAC layer of the first terminal device; or, The second message is a SL MAC control element CE message.

11. A communication device, characterized in that: The device is a first terminal device that applies sidelink SL discontinuous reception DRX, and the first terminal device includes a transceiver module and a processing module. The transceiver module is used to send a first message to a second terminal device, where the first message includes a first resource set, and the first resource set is used for the second terminal device to perform SL transmission; The processing module is configured to use the resources corresponding to the first resource set as the activation time of the SL DRX; or, disabling the SL DRX on resources corresponding to the first resource set; The transceiver module is used to monitor sidelink control information SCI in the resources corresponding to the first resource set, where the SCI includes the SCI from the second terminal device; The resources corresponding to the first resource set include the time domain resources corresponding to the first resource set, and the time domain resources corresponding to the first resource set overlap with the sleep time of the SL DRX.

12. The device according to claim 11, characterized in that When sending the first message to the second terminal device, the transceiver module is used to broadcast the first message; The first message further includes a target layer 2 identifier or a target layer 1 identifier, and the target layer 2 identifier or the target layer 1 identifier is used to indicate a service type corresponding to the first resource set.

13. The device according to claim 11 or 12, characterized in that The first message is a PC5 radio resource control RRC message, and the RRC layer of the first terminal device indicates the activation time corresponding to the first resource set to the media access control MAC layer of the first terminal device, or disables the SL DRX; or, The first message is a physical PHY layer message, and the PHY layer of the first terminal device indicates the activation time corresponding to the first resource set to the MAC layer of the first terminal device, or disables the SL DRX; or, The first message is a SL MAC control unit CE message.

14. The device according to claim 13, characterized in that The transceiver module is used to receive a second message from a second terminal device, where the second message is used to request the first resource set; The processing module is used to disable the SL DRX; The processing module is used to perform monitoring to acquire the first resource set during disabling of the SL DRX.

15. The device according to claim 14, characterized in that When disabling the SL DRX, the processing module is used to disable the SL DRX at a first moment; The first moment is determined according to the moment when the first terminal device receives the second message from the second terminal device.

16. The device according to claim 14 or 15, characterized in that The second message is a PC5 radio resource control RRC message, and the RRC layer of the first terminal device instructs the media access control MAC layer of the first terminal device to disable SL DRX; or, The second message is a physical layer PHY message, and the PHY layer of the first terminal device instructs the MAC layer of the first terminal device to disable SL DRX; or, The second message is a SL MAC control element CE message.

17. The device according to claim 14 or 15, characterized in that The processing module is further configured to enable the SL DRX at a second moment; The second moment is determined according to the moment when the first terminal device sends the first message to the second terminal device; or, The second moment is determined according to the first moment and the first duration, and the first moment is determined according to the moment when the first terminal device receives the second message from the second terminal device; or, The second moment is determined according to the moment when the first terminal device acquires the first resource set.

18. The device according to claim 13, characterized in that The transceiver module is used to receive a second message from a second terminal device, where the second message is used to request the first resource set; The processing module is used to determine the activation time of the SL DRX according to the second message; The processing module is used to perform monitoring at the activation time of the SL DRX to obtain the first resource set.

19. The device according to claim 18, characterized in that The second message also includes first indication information, and the first indication information is used to indicate the time when the first terminal device performs monitoring; when determining the activation time of the SL DRX according to the second message, the processing module is used to use the time when the first terminal device performs monitoring as the activation time of the SL DRX.

20. The device according to claim 18 or 19, characterized in that The second message is a PC5 radio resource control RRC message, and the RRC layer of the first terminal device indicates the activation time of the SL DRX to the media access control MAC layer of the first terminal device; or, The second message is a physical PHY layer message, and the PHY layer of the first terminal device indicates the activation time of the SL DRX to the MAC layer of the first terminal device; or, The second message is a SL MAC control element CE message.

21. A communication device, characterized in that: The method comprises a processor and a memory, wherein the processor calls a computer program stored in the memory to implement the method according to any one of claims 1 to 10.

22. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed, the method according to any one of claims 1 to 10 is implemented.

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