Method, device and terminal for implementing sidelink discontinuous reception

Abstract

The present application discloses a method, device and terminal for implementing sidelink discontinuous reception, which belong to the technical field of communication. The method for implementing sidelink discontinuous reception according to the embodiment of the present application includes a step of receiving a sidelink discontinuous reception command medium access control control element (SL DRX command MAC CE) sent by a first terminal from a second terminal, in which the SL DRX command MAC CE includes an effective target and / or range of the SL DRX command MAC CE, and a step of the first terminal performing a first operation according to the effective target and / or range of the SL DRX command MAC CE, thereby realizing power saving of the terminal and further improving the flexibility of SL DRX power saving control.

Description

[Technical field]

[0001] (CROSS REFERENCE TO RELATED APPLICATIONS) This application claims priority to a Chinese patent application filed on April 1, 2021, bearing application number 2021103575852 and titled "Method, device and terminal for implementing sidelink intermittent reception," the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of communications, and more particularly to a method, device, and terminal for implementing sidelink discontinuous reception. [Background technology]

[0003] Long Term Evolution (LTE) systems support sidelink (SL) since Release 12. As shown in Figure 1, which is a schematic diagram of LTE uplink / downlink / sidelink, sidelink is for direct data transmission between user equipment (UE) without going through network equipment. Current sidelink transmission is mainly divided into transmission methods such as broadcast, groupcast, and unicast.

[0004] Both LTE and NR have a DRX (Discontinuous Reception) mechanism, which achieves UE power saving by setting the on and off times of DRX. DRX uses cycle settings, and as shown in FIG. 2, when each DRX cycle starts, the terminal first enters a temporary continuous reception state called the on duration (monitoring period). During the on duration, the terminal must monitor the physical downlink control channel (PDCCH) to determine whether there is a resource allocation for itself. If no data scheduling and data transmission occurs during the on duration, the terminal remains in an inactive state until the next DRX cycle, and downlink transmission cannot be received again unless the drx-onDurationTimer is started. During the on duration, if the UE receives data scheduled in a certain slot, it is highly likely that it will continue to be scheduled in the next few slots. Therefore, if the UE starts or restarts the timer drx-InactivityTimer every time the UE transmits scheduled data for the first time, the UE will always be in an active state until the timer times out. When the UE receives a Discontinuous Reception Command Media Access Control Control Element (DRX Command MAC CE) from the base station, it stops the operation of the related DRX timers (e.g., drx-onDurationTimer, drx-InactivityTimer), which causes the UE to enter the DRX sleep / off state and achieves power saving for the UE.

[0005] The current control granularity of the Uu DRX command MAC CE is per UE. Considering that one UE may perform multiple unicast / groupcast services simultaneously for SL, multiple unicast connections / groupcast groups may be established simultaneously inside one UE, so the format of the Uu DRX command MAC CE with per UE granularity has low flexibility and cannot be applied to the DRX mechanism in the SL scenario. Summary of the Invention [Problem to be solved by the invention]

[0006] The embodiments of the present application provide a method, device, and terminal for implementing sidelink discontinuous reception, which can solve the problem that the current Uu DRX command MAC CE format has low flexibility and cannot be applied to the DRX mechanism in SL scenarios. [Means for solving the problem]

[0007] In a first aspect, a method for implementing sidelink discontinuous reception applied to a first terminal, comprising: A step of receiving a sidelink discontinuous reception command medium access control (SL DRX command MAC CE) sent by a first terminal from a second terminal, the SL DRX command MAC CE including a valid object and / or a range of the SL DRX command MAC CE; and a step of the first terminal performing a first operation according to a valid object and / or range of the SL DRX command MAC CE.

[0008] In a second aspect, a method for implementing sidelink discontinuous reception applied to a second terminal, comprising: The method for implementing sidelink discontinuous reception includes a step of a second terminal sending a sidelink discontinuous reception command medium access control control element (SL DRX command MAC CE) to a first terminal, the SL DRX command MAC CE including a valid target and / or range of the SL DRX command MAC CE.

[0009] In a third aspect, A first receiving unit for receiving a sidelink discontinuous reception command medium access control control element (SL DRX command MAC CE) sent from a second terminal, the SL DRX command MAC CE including a valid object and / or a range of the SL DRX command MAC CE; A device for implementing sidelink discontinuous reception is provided, comprising: a first processing unit for performing a first operation according to a valid target and / or range of the SL DRX command MAC CE.

[0010] In a fourth aspect, The present invention provides an apparatus for implementing sidelink discontinuous reception, the apparatus comprising: a first transmitting unit for transmitting a sidelink discontinuous reception command medium access control control element (SL DRX command MAC CE) to a first terminal, the SL DRX command MAC CE including a valid target and / or range of the SL DRX command MAC CE.

[0011] In a fifth aspect, Provided is a terminal comprising a processor, a memory, and programs or commands stored in the memory and executable on the processor, the programs or commands, when executed by the processor, realizing steps of the method according to the first or second aspect.

[0012] In a sixth aspect, Provided is a terminal comprising: a communication interface for receiving a sidelink discontinuous reception command medium access control control element SL DRX command MAC CE transmitted from a second terminal, the SL DRX command MAC CE including a validity target and / or range of the SL DRX command MAC CE; and a processor for executing a first operation according to the validity target and / or range of the SL DRX command MAC CE.

[0013] In a seventh aspect, The present invention provides a terminal comprising: a processor; and a communication interface for transmitting a sidelink discontinuous reception command medium access control control element (SL DRX command MAC CE) to a first terminal, the SL DRX command MAC CE including a validity target and / or range of the SL DRX command MAC CE.

[0014] In an eighth embodiment, There is provided a readable storage medium having stored thereon a program or commands which, when executed by a processor, cause the steps of the method according to the first aspect or the steps of the method according to the second aspect to be realized.

[0015] In a ninth aspect, there is provided a chip comprising a processor and a communication interface, the communication interface and the processor being coupled to each other, the processor executing a program or command to implement the method according to the first aspect or the method according to the second aspect.

[0016] In a tenth aspect, there is provided a computer program / program product which is stored in a non-volatile storage medium and which, when executed by at least one processor, realizes steps of the method for realizing sidelink discontinuous reception described in the first aspect or steps of the method for realizing sidelink discontinuous reception described in the second aspect. Effect of the Invention

[0017] In an embodiment of the present application, the SL DRX command MAC CE received by the terminal includes the valid target and / or range of the SL DRX command MAC CE, and the granularity of the valid target and / or range is finer, so as to meet the purpose of power saving for SL UE and further improve the flexibility of SL DRX power saving control. [Brief description of the drawings]

[0018] [Figure 1] This is a schematic diagram of LTE uplink / downlink / sidelink. [Diagram 2] FIG. 2 is a schematic diagram of a DRX cycle. [Diagram 3] 1 is a block diagram of a wireless communication system to which an embodiment of the present application can be applied. [Figure 4] FIG. 2 is a schematic diagram of a downlink MAC protocol data unit (PDU) in the related art; [Diagram 5] 1 is a flowchart 1 of a method for implementing sidelink discontinuous reception provided in an embodiment of the present application; [Figure 6] FIG. 1 is a schematic diagram of the SL DRX command MAC CE (format 1) provided in an embodiment of the present application. [Figure 7] FIG. 1 is a schematic diagram of the SL DRX command MAC CE (format 2) provided in an embodiment of the present application. [Figure 8] 2 is a flowchart 2 of a method for implementing sidelink discontinuous reception provided in an embodiment of the present application; [Figure 9] FIG. 1 is a structural schematic diagram of a device for implementing sidelink discontinuous reception provided in an embodiment of the present application; [Figure 10] FIG. 2 is a structural schematic diagram 2 of a device for implementing sidelink discontinuous reception provided in an embodiment of the present application; [Figure 11] FIG. 2 is a structural schematic diagram of a communication device provided in an embodiment of the present application; [Figure 12]FIG. 2 is a hardware structure schematic diagram of a terminal provided in an embodiment of the present application; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, the technical solutions in the embodiments of the present application will be clearly described with reference to the drawings in the embodiments of the present application, and it is to be understood that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application are within the scope of protection of the present application.

[0020] The terms "first", "second", etc. in the specification and claims of the present application are not intended to describe a particular order or sequence, but are intended to distinguish between similar objects. It should be understood that the terms used in this manner may be substituted for each other where appropriate, so that the embodiments of the present application may be performed in an order other than that shown or described herein, and that the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited, for example, the first object may be one or more. In the specification and claims, "and / or" indicates at least one of the connected objects, and the symbol " / " generally indicates that the related objects before and after are in an "or" relationship.

[0021] It should be noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the techniques described can be used in other systems and wireless technologies in addition to those mentioned above. Although the following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in much of the following description, these technologies may be used in other systems and wireless technologies, such as 6th Generation (6G) and 7th Generation (7G) systems. th The present invention can also be applied to applications other than NR system applications, such as 6G (Generation, 6G) communication systems.

[0022] FIG. 3 shows a block diagram of a wireless communication system to which the embodiment of the present application can be applied. The wireless communication system includes a terminal 11 and a network side device 12. The terminal 11 may be called a terminal device or a user terminal (User Equipment, UE), and the terminal 11 may be a terminal side device such as a mobile phone, a tablet personal computer, a laptop computer also called a notebook computer, a personal digital assistant (PDA), a personal digital assistant, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), a wearable device, a vehicle-mounted device (VUE), a pedestrian terminal (PUE), etc., and the wearable device includes a smart watch, a wristband, an earphone, a pair of glasses, etc. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The network side equipment 12 may be a base station or a core network side equipment, among which the base station may be called a Node B, an evolved Node B, an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a B node, an evolved B node (eNB), a home B node, a home evolved B node, a WLAN access point, a WiFi node, a transmitting and receiving point (Transmitting Receiving Point, TRP), or any other suitable term in the above field, and as long as the same technical effect can be achieved, the base station is not limited to a specific technical term, and it should be noted that in the embodiments of this application, only a base station in an NR system is taken as an example, but the specific type of the base station is not limited.

[0023] The format of the Uu DRX command MAC CE in the related art is simply designed, and as shown in FIG. 4, the DRX command MAC CE only has a MAC subheader, and the control granularity of the Uu DRX command MAC CE is per UE. Considering that one UE may perform multiple unicast / groupcast services simultaneously in the SL scenario, multiple unicast connections / groupcast groups may be established simultaneously inside one UE, so the format of the Uu DRX command MAC CE with per UE granularity has low flexibility and cannot be applied to the DRX mechanism in the SL scenario. To solve the above problem, the embodiments of the present application provide a method, device, and terminal for implementing sidelink discontinuous reception.

[0024] In the following, with reference to the drawings, a method, apparatus and terminal for implementing sidelink discontinuous reception provided in the embodiments of the present application will be described in detail according to several embodiments and application scenarios thereof.

[0025] 5 is a flow chart 1 of a method for implementing sidelink discontinuous reception provided in an embodiment of the present application. As shown in FIG. 5, the method includes the following steps 500 and 501.

[0026] In step 500, the first terminal receives a sidelink discontinuous reception command medium access control control element SL DRX command MAC CE transmitted from the second terminal, and the SL DRX command MAC CE includes a validity target and / or range of the SL DRX command MAC CE.

[0027] It should be noted that the first terminal and the second terminal are both SL terminals, of which the first terminal is a receiving end and the second terminal is a transmitting end.

[0028] The SL DRX command MAC CE includes a valid target and / or range of the SL DRX command MAC CE, i.e., the SL DRX command MAC CE indicates for which target and / or range the SL DRX command MAC CE is valid.

[0029] In step 501, the first terminal performs a first operation according to the valid object and / or scope of the SL DRX command MAC CE.

[0030] Optionally, the first terminal receives the SL DRX command MAC CE, obtains a valid object and / or scope of the SL DRX command MAC CE, and performs a first operation according to the valid object and / or scope of the SL DRX command MAC CE, for example, stops an operation of a related SL DRX timer according to the valid object and / or scope of the SL DRX command MAC CE.

[0031] In an embodiment of the present application, the SL DRX command MAC CE received by the terminal includes the valid target and / or range of the SL DRX command MAC CE, and the granularity of the valid target and / or range is finer, so as to meet the purpose of power saving for SL UE and further improve the flexibility of SL DRX power saving control.

[0032] Optionally, the format of the SL DRX command MAC CE includes the following format 1 and format 2.

[0033] Format 1 includes only a MAC CE subheader and does not include a MAC CE payload.

[0034] 6 is a schematic diagram of a SL DRX command MAC CE (format 1) provided in an embodiment of the present application. Optionally, assuming format 1, the MAC CE subheader includes a padding R field and a logical channel identifier LCID field for indicating the format of the SL DRX command MAC CE.

[0035] Format 2 includes a MAC CE subheader and a MAC CE payload.

[0036] 7 is a schematic diagram of a SL DRX command MAC CE (format 2) provided in an embodiment of the present application. Optionally, assuming format 2, the MAC CE subheader includes a padding R field, a length L field for indicating the number of bytes occupied by the MAC CE payload, and a logical channel identifier LCID field for indicating the format of the SL DRX command MAC CE.

[0037] It should be noted that in format 1 and format 2, the R field is a padding field. The MAC CE payload may contain zero, one or more R fields, depending on whether the BYTE is aligned after all the information is aligned, so that the R field fills in the missing bits.

[0038] Optionally, the valid object and / or scope of the SL DRX command MAC CE is: When the format of the SL DRX command MAC CE is format 1, all information of the valid target and / or range of the SL DRX command MAC CE is indicated by at least one of a sidelink control information (SCI) and a sidelink shared channel (SL-SCH) subheader; When the format of the SL DRX command MAC CE is format 2, all information of the valid object and / or range of the SL DRX command MAC CE is indicated by a MAC CE payload; When the SL DRX command MAC CE is format 2, the information of a first part of the validity target and / or range of the SL DRX command MAC CE is indicated by at least one of an SCI and an SL-SCH subheader, and the information of a second part of the validity target and / or range of the SL DRX command MAC CE is indicated by a MAC CE payload.

[0039] Alternatively, on the assumption that the format of the SL DRX command MAC CE is Format 1, all information on the valid target and / or range of the SL DRX command MAC CE is implicitly indicated by at least one of the SCI and the sidelink shared channel SL-SCH subheader, that is, the UE obtains all information on the valid target and / or range of the SL DRX command MAC CE from at least one of the SCI and the sidelink shared channel SL-SCH subheader.

[0040] Optionally, the manner of indicating by at least one of the SCI and SL-SCH subheader is: indicating by a source address identifier included in the SCI; indicating by a destination address identifier included in the SCI; indicating by a source address field included in the SL-SCH subheader; and indicating by a destination address field included in the SL-SCH subheader.

[0041] It can be understood that the validity target and / or scope of the SL DRX command MAC CE is a combination of information of the source address identifier included in the SCI, the destination address identifier included in the SCI, the source address field included in the SL-SCH subheader, and the destination address field included in the SL-SCH subheader.

[0042] Here, the Source L2 ID provided by the upper layer to the Access stratum (AS) is a total of 24 bits, which is divided into lower 8 bits and upper 16 bits in the AS layer. Among them, the lower 8 bits of the Source L2 ID are assigned to the source address identifier (Source ID) included in the SCI, and the upper 16 bits of the Source L2 ID are assigned to the source address field (SRC field) included in the SL-SCH subheader.

[0043] Here, the Destination L2 ID provided by the upper layer to the AS layer is a total of 24 bits, which is divided into lower 16 bits and upper 8 bits in the AS layer. Among them, the lower 16 bits of the Destination L2 ID are assigned to the destination address identifier (Destination ID) included in the SCI, and the upper 8 bits of the Destination L2 ID are assigned to the destination address field (DST field) included in the SL-SCH subheader.

[0044] In the embodiments of the present application, the upper layer refers to a vehicle to everything (V2X) layer, a proximity service (ProSe) layer, or an application layer.

[0045] Alternatively, when the format of the SL DRX command MAC CE is format 2, all information on the valid target and / or range of the SL DRX command MAC CE is explicitly indicated by the MAC CE payload, that is, the UE obtains all information on the valid target and / or range of the SL DRX command MAC CE through the MAC CE payload.

[0046] Optionally, the MAC CE payload includes at least one of the following information:

[0047] Each bit of the index or BitMap is destination address information corresponding to the first higher layer ID, The first higher layer ID is a destination L2 ID provided by a higher layer to an AS layer, and may be a destination UE ID or a destination group ID.

[0048] Each bit of the index or BitMap is source address information corresponding to a second higher layer ID, The second upper layer ID is equal to the Source L2 ID provided by the upper layer to the AS layer.

[0049] At least one logical channel identifier LCID or logical channel group LCG information.

[0050] Cast type information, It includes at least one of unicast and groupcast.

[0051] Each bit of the Index or BitMap corresponds to a set of SL DRX parameters, and the set of SL DRX parameters is SL DRX configuration information obtained by broadcast configuration, dedicated signaling configuration, second terminal configuration, or pre-configuration; Optionally, the set of SL DRX parameters may include at least one of the following parameters: a DRX duration monitoring timer drx-onDurationTimer, a DRX inactivity timer drx-InactivityTimer, a DRX retransmission timer drx-RetransmissionTimer, a DRX HARQ round trip timer drx-HARQ-RTT-Timer, a DRX cycle drx-Cycle, and a DRX cycle start offset DRX-CycleStartOffset.

[0052] Sidelink process SL process information where each bit of the index or BitMap corresponds to the SL process ID.

[0053] Validity period information for indicating a validity period of the SL DRX Command MAC CE, The unit may be ms, DRX cycles, subframes or slots.

[0054] SL DRX Command Direction information for indicating a valid direction in which the MAC CE activates / deactivates DRX, For example, for a pair of unicast UE1 and UE2, when Direction=0, the transmission direction is indicated as UE1->UE2, and when Direction=1, the transmission direction is indicated as UE2->UE1. The direction information is suitable for a scenario that supports applying common DRX to a pair of unicast UEs.

[0055] 7, the SL DRX command indicates the valid target and / or range of the MAC CE by taking the logical channel group LCG information and direction information included in the MAC CE payload as an example. In practice, the information included in the MAC CE payload may be a combination of various information, and the present invention does not limit the arrangement order of various information.

[0056] In some alternative embodiments, when the SL DRX command MAC CE is format 2, the validity target and / or scope of the SL DRX command MAC CE may be indicated by at least one of an SCI and an SL-SCH subheader as follows: The information of a first part of the validity target and / or range of the SL DRX command MAC CE is implicitly indicated by at least one of an SCI and an SL-SCH subheader, and the information of a second part of the validity target and / or range of the SL DRX command MAC CE is explicitly indicated by a MAC CE payload.

[0057] Alternatively, the terminal obtains information on a first part of the validity target and / or range of the SL DRX command MAC CE through at least one of an SCI and an SL-SCH subheader, and obtains information on a second part of the validity target and / or range of the SL DRX command MAC CE through a MAC CE payload.

[0058] Here, the first part information and the second part information constitute all information on the validity target and / or range of the SL DRX command MAC CE.

[0059] Here, the first part information is implicitly indicated by at least one of the SCI and the SL-SCH subheader, which may be referred to as being implicitly indicated by at least one of the SCI and the SL-SCH subheader when the SL DRX command MAC CE is format 1. Here, the description is omitted.

[0060] Here, the information of the second part is explicitly indicated by the MAC CE payload, referring to the explicit indication by the MAC CE payload when the SL DRX command MAC CE is format 2. Here, the explanation is omitted. What should be explained is that in this case, the information included in the MAC CE payload may not include destination information and source information, or may include destination information and source information different from those implicitly indicated by at least one of the SCI and the SL-SCH subheader.

[0061] Optionally, when the first terminal receives the SL DRX command MAC CE, the first terminal performs a first operation according to a valid object and / or a scope of the SL DRX command MAC CE. The step of performing a first operation includes: stopping a SL DRX timer associated with said validity object and / or range; If the validity object and / or range includes validity period information, starting a SL DRX command MAC CE validity period timer, and after the SL DRX command MAC CE validity period timer times out, starting a SL DRX timer associated with the validity object and / or range; if the validity object and / or range includes SL DRX configuration information, starting a SL DRX timer associated with the validity object and / or range according to the SL DRX configuration information.

[0062] In the prior art, when a UE receives a DRX Command MAC CE from a base station, it stops the operation of the DRX timers related to the UE, such as drx-onDurationTimer, drx-InactivityTimer, etc. What is different from the prior art is that in the embodiment of the present application, the first terminal stops the SL DRX timers related to the valid object and / or range, thereby realizing finer granularity control and improving flexibility of SL DRX power saving control.

[0063] 8 is a flow chart 2 of a method for implementing sidelink discontinuous reception provided in an embodiment of the present application. As shown in FIG. 8, the method includes the following steps 800:

[0064] In step 800, the second terminal sends a sidelink discontinuous reception command medium access control control element SL DRX command MAC CE to the first terminal, where the SL DRX command MAC CE includes a validity object and / or range of the SL DRX command MAC CE.

[0065] It should be noted that the first terminal and the second terminal are both SL terminals, of which the first terminal is a receiving end and the second terminal is a transmitting end.

[0066] The SL DRX command MAC CE includes a valid target and / or range of the SL DRX command MAC CE, i.e., the SL DRX command MAC CE indicates to the first terminal for which target and / or range the SL DRX command MAC CE is valid.

[0067] In an embodiment of the present application, the SL DRX command MAC CE sent from the transmitting end to the receiving end includes the valid target and / or range of the SL DRX command MAC CE, and the granularity of the valid target and / or range is finer, so as to meet the purpose of power saving for SL UE and further improve the flexibility of SL DRX power saving control.

[0068] Optionally, the format of the SL DRX command MAC CE is: Format 1, which contains only the MAC CE subheader and does not contain the MAC CE payload, or Includes Format 2, which includes a MAC CE subheader and a MAC CE payload.

[0069] Alternatively, if the format of the SL DRX command MAC CE is format 1, the MAC CE subheader includes a padding R field and a logical channel identifier LCID field for indicating the format of the SL DRX command MAC CE; If the format of the SL DRX command MAC CE is format 2, the MAC CE subheader includes a padding R field, a length L field for indicating the number of bytes occupied by the MAC CE payload, and a logical channel identifier LCID field for indicating the format of the SL DRX command MAC CE.

[0070] Optionally, the valid object and / or scope of the SL DRX command MAC CE is: When the format of the SL DRX command MAC CE is format 1, all information of the valid target and / or scope of the SL DRX command MAC CE is indicated by at least one of the sidelink control information SCI and the sidelink shared channel SL-SCH subheader; When the format of the SL DRX command MAC CE is format 2, all information of the valid object and / or range of the SL DRX command MAC CE is indicated by a MAC CE payload; When the SL DRX command MAC CE is format 2, the information of a first part of the validity target and / or range of the SL DRX command MAC CE is indicated by at least one of an SCI and an SL-SCH subheader, and the information of a second part of the validity target and / or range of the SL DRX command MAC CE is indicated by a MAC CE payload.

[0071] Optionally, the manner of indicating by at least one of the SCI and SL-SCH subheader is: indicating by a source address identifier included in the SCI; indicating by a destination address identifier included in the SCI; indicating by a source address field included in the SL-SCH subheader; and indicating by a destination address field included in the SL-SCH subheader.

[0072] Optionally, the method of indicating by MAC CE payload is: In the MAC CE payload, Destination address information in which each bit of the index or BitMap corresponds to the first higher layer ID; Source address information in which each bit of the index or BitMap corresponds to the second higher layer ID; At least one logical channel identifier LCID or logical channel group LCG information; Cast type information, SL DRX configuration information, where each bit of the Index or BitMap corresponds to a set of SL DRX parameters, and the set of SL DRX parameters is obtained by broadcast configuration, dedicated signaling configuration, second terminal configuration, or pre-configuration; Sidelink process information in which each bit of the index or BitMap corresponds to a SL process ID; Validity period information for indicating a validity period of the SL DRX Command MAC CE; and direction information for indicating the effective direction in which the SL DRX Command MAC CE activates / deactivates DRX.

[0073] Since the embodiments of the present application are described from the perspective of the transmitting end, reference may be made to the description of the embodiment of the method for implementing sidelink discontinuous reception shown in FIG. 5, and the description will be omitted here.

[0074] It should be noted that, for the method for implementing sidelink discontinuous reception provided in the embodiments of the present application, the execution subject may be a device for implementing sidelink discontinuous reception, or may be a control module for executing the method for implementing sidelink discontinuous reception in the device for implementing sidelink discontinuous reception. In the embodiments of the present application, the device for implementing sidelink discontinuous reception provided in the embodiments of the present application will be described by taking the device for implementing sidelink discontinuous reception executing the method for implementing sidelink discontinuous reception as an example.

[0075] FIG. 9 is a structural schematic diagram 1 of a device for implementing sidelink discontinuous reception provided in an embodiment of the present application. As shown in FIG. 9, the device includes: A first receiving unit 910 for receiving a sidelink discontinuous reception command medium access control control element (SL DRX command MAC CE) sent from a second terminal, the first receiving unit including a valid object and / or a scope of the SL DRX command MAC CE; and a first processing unit 920 for performing a first operation according to a valid object and / or scope of the SL DRX command MAC CE.

[0076] Optionally, the format of the SL DRX command MAC CE is: Format 1, which contains only the MAC CE subheader and does not contain the MAC CE payload, or Includes Format 2, which includes a MAC CE subheader and a MAC CE payload.

[0077] Alternatively, if the format of the SL DRX command MAC CE is format 1, the MAC CE subheader includes a padding R field and a logical channel identifier LCID field for indicating the format of the SL DRX command MAC CE; If the format of the SL DRX command MAC CE is format 2, the MAC CE subheader includes a padding R field, a length L field for indicating the number of bytes occupied by the MAC CE payload, and a logical channel identifier LCID field for indicating the format of the SL DRX command MAC CE.

[0078] Optionally, the valid object and / or scope of the SL DRX command MAC CE is: When the format of the SL DRX command MAC CE is format 1, all information of the valid target and / or scope of the SL DRX command MAC CE is indicated by at least one of the sidelink control information SCI and the sidelink shared channel SL-SCH subheader; When the format of the SL DRX command MAC CE is format 2, all information of the valid object and / or range of the SL DRX command MAC CE is indicated by a MAC CE payload; When the SL DRX command MAC CE is format 2, the information of a first part of the validity target and / or range of the SL DRX command MAC CE is indicated by at least one of an SCI and an SL-SCH subheader, and the information of a second part of the validity target and / or range of the SL DRX command MAC CE is indicated by a MAC CE payload.

[0079] Optionally, the manner of indicating by at least one of the SCI and SL-SCH subheader is: indicating by a source address identifier included in the SCI; indicating by a destination address identifier included in the SCI; indicating by a source address field included in the SL-SCH subheader; and at least one of indicating by a destination address field included in the SL-SCH subheader.

[0080] Optionally, the method of indicating by MAC CE payload is: In the MAC CE payload, Destination address information in which each bit of the index or BitMap corresponds to the first higher layer ID; Source address information in which each bit of the index or BitMap corresponds to the second higher layer ID; At least one logical channel identifier LCID or logical channel group LCG information; Cast type information, SL DRX configuration information, where each bit of the Index or BitMap corresponds to a set of SL DRX parameters, and the set of SL DRX parameters is obtained by broadcast configuration, dedicated signaling configuration, second terminal configuration, or pre-configuration; Sidelink process information in which each bit of the index or BitMap corresponds to a SL process ID; Validity period information for indicating a validity period of the SL DRX Command MAC CE; and direction information for indicating the effective direction in which the SL DRX Command MAC CE activates / deactivates DRX.

[0081] Optionally, the first processing unit comprises: stopping a SL DRX timer associated with said validity object and / or range; If the validity object and / or range includes validity period information, starting a SL DRX command MAC CE validity period timer, and after the SL DRX command MAC CE validity period timer times out, starting a SL DRX timer associated with the validity object and / or range; and if the validity object and / or range includes SL DRX configuration information, starting a SL DRX timer associated with the validity object and / or range according to the SL DRX configuration information.

[0082] In an embodiment of the present application, the SL DRX command MAC CE includes the valid target and / or range of the SL DRX command MAC CE, and the granularity of the valid target and / or range is finer, so that the purpose of power saving for SL UE can be met while further improving the flexibility of SL DRX power saving control.

[0083] The device for realizing sidelink intermittent reception in the embodiment of the present application may be a device, a device having an operating system, or an electronic device, or may be a component, integrated circuit, or chip in a terminal. The device or electronic device may be a portable terminal or a non-portable terminal. For example, the portable terminal may include, but is not limited to, the types of terminals 11 listed above, and the non-portable terminal may be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), an automated teller machine or a kiosk, etc., and is not specifically limited in the embodiment of the present application.

[0084] The device for implementing sidelink discontinuous reception provided in the embodiment of the present application can implement each process implemented in the method embodiment shown in Figures 5 to 7, and achieve the same technical effects, so that the description will be omitted here to avoid repetition.

[0085] FIG. 10 is a structural schematic diagram 2 of a device for implementing sidelink discontinuous reception provided in an embodiment of the present application. As shown in FIG. 10, the device includes: The first terminal has a first sending unit 1010 for sending a sidelink discontinuous reception command medium access control control element SL DRX command MAC CE to the first terminal, the SL DRX command MAC CE including a validity object and / or scope of the SL DRX command MAC CE.

[0086] Optionally, the format of the SL DRX command MAC CE is: Format 1, which contains only the MAC CE subheader and does not contain the MAC CE payload, or Includes Format 2, which includes a MAC CE subheader and a MAC CE payload.

[0087] Alternatively, if the format of the SL DRX command MAC CE is format 1, the MAC CE subheader includes a padding R field and a logical channel identifier LCID field for indicating the format of the SL DRX command MAC CE; If the format of the SL DRX command MAC CE is format 2, the MAC CE subheader includes a padding R field, a length L field for indicating the number of bytes occupied by the MAC CE payload, and a logical channel identifier LCID field for indicating the format of the SL DRX command MAC CE.

[0088] Optionally, the valid object and / or scope of the SL DRX command MAC CE is: When the format of the SL DRX command MAC CE is format 1, all information of the valid target and / or scope of the SL DRX command MAC CE is indicated by at least one of the sidelink control information SCI and the sidelink shared channel SL-SCH subheader; When the format of the SL DRX command MAC CE is format 2, all information of the valid object and / or range of the SL DRX command MAC CE is indicated by a MAC CE payload; When the SL DRX command MAC CE is format 2, the information of a first part of the validity target and / or range of the SL DRX command MAC CE is indicated by at least one of an SCI and an SL-SCH subheader, and the information of a second part of the validity target and / or range of the SL DRX command MAC CE is indicated by a MAC CE payload.

[0089] Optionally, the manner of indicating by at least one of the SCI and SL-SCH subheader is: indicating by a source address identifier included in the SCI; indicating by a destination address identifier included in the SCI; indicating by a source address field included in the SL-SCH subheader; and indicating by a destination address field included in the SL-SCH subheader.

[0090] Optionally, the method of indicating by MAC CE payload is: In the MAC CE payload, Destination address information in which each bit of the index or BitMap corresponds to the first higher layer ID; Source address information in which each bit of the index or BitMap corresponds to the second higher layer ID; At least one logical channel identifier LCID or logical channel group LCG information; Cast type information, SL DRX configuration information, where each bit of the Index or BitMap corresponds to a set of SL DRX parameters, and the set of SL DRX parameters is obtained by broadcast configuration, dedicated signaling configuration, second terminal configuration, or pre-configuration; Sidelink process information in which each bit of the index or BitMap corresponds to a SL process ID; Validity period information for indicating a validity period of the SL DRX Command MAC CE; and direction information for indicating the effective direction in which the SL DRX Command MAC CE activates / deactivates DRX.

[0091] In an embodiment of the present application, the SL DRX command MAC CE includes the valid target and / or range of the SL DRX command MAC CE, and the granularity of the valid target and / or range is finer, so that the purpose of power saving for SL UE can be met while further improving the flexibility of SL DRX power saving control.

[0092] The device for realizing sidelink intermittent reception in the embodiment of the present application may be a device, a device having an operating system, or an electronic device, or may be a component, integrated circuit, or chip in a terminal. The device or electronic device may be a portable terminal or a non-portable terminal. For example, the portable terminal may include, but is not limited to, the types of terminals 11 listed above, and the non-portable terminal may be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), an automated teller machine or a kiosk, etc., and is not specifically limited in the embodiment of the present application.

[0093] The device for implementing sidelink discontinuous reception provided in the embodiment of the present application can implement each process implemented in the method embodiment shown in Figure 8, and achieve the same technical effects. In order to avoid repetition, the description will be omitted here.

[0094] Optionally, as shown in Fig. 11, the embodiment of the present application further provides a communication device 1100, including a processor 1101, a memory 1102, and a program or command stored in the memory 1102 and executable on the processor 1101. For example, when the communication device 1100 is a terminal, when the program or command is executed by the processor 1101, each process of the embodiment of the method for implementing sidelink discontinuous reception is realized, and the same technical effect can be achieved. In order to avoid repetition, the description will be omitted here.

[0095] Optionally, the embodiments of the present application further provide a terminal, comprising: a communication interface for receiving a sidelink discontinuous reception command medium access control element (SL DRX command MAC CE) sent from the second terminal, the SL DRX command MAC CE including an effective object and / or range of the SL DRX command MAC CE, and a processor for performing a first operation according to the effective object and / or range of the SL DRX command MAC CE. The terminal embodiment corresponds to the above terminal-side method embodiment, and each implementation process and realization form of the above method embodiment can be applied to the terminal embodiment, and the same technical effects can be achieved.

[0096] Optionally, the embodiment of the present application further provides a terminal including a processor and a communication interface for sending a sidelink discontinuous reception command medium access control element (SL DRX command MAC CE) to a first terminal, the SL DRX command MAC CE including an effective object and / or range of the SL DRX command MAC CE. The terminal embodiment corresponds to the above-mentioned terminal-side method embodiment, and each implementation process and realization form of the above-mentioned method embodiment can be applied to the terminal embodiment, and the same technical effects can be achieved.

[0097] Specifically, FIG. 12 is a hardware structure schematic diagram of a terminal for implementing the embodiment of the present application.

[0098] The terminal 1200 includes at least some of the following components, but is not limited to: a radio frequency unit 1201, a network module 1202, an audio output unit 1203, an input unit 1204, a sensor 1205, a display unit 1206, a user input unit 1207, an interface unit 1208, a memory 1209, and a processor 1210.

[0099] Those skilled in the art can understand that the terminal 1200 may further include a power source (e.g., a battery) for supplying power to each component, and the power source may be logically connected to the processor 1210 through a power management system, and the power management system may further realize functions such as charge / discharge management and power consumption management. The structure of the terminal shown in FIG. 12 does not limit the terminal, and the terminal may include more or fewer components than those shown, or a combination of some components, or a different component arrangement, and the description will be omitted here.

[0100] It should be understood that in the embodiment of the present application, the input unit 1204 may include a graphics processing unit (GPU) 12041 and a microphone 12042 for processing image data of still or video captured by an image capture device (e.g., a camera) in a video capture mode or an image capture mode. The display unit 1206 may include a display panel 12061, and the display panel 12061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1207 includes a touch panel 12071 and other input devices 12072. The touch panel 12071 is also called a touch screen. The touch panel 12071 may include two parts, a touch detection device and a touch controller. The other input devices 12072 may include, but are not limited to, a physical keyboard, a function button (e.g., a volume control button, a switch button, etc.), a trackball, a mouse, and an operation lever, and the description thereof will be omitted here.

[0101] In the embodiment of the present application, the high frequency unit 1201 receives downlink data from the network side device, processes the data in the processor 1210, and transmits uplink data to the network side device. Typically, the high frequency unit 1201 includes, but is not limited to, an antenna, at least one amplifier, a receiver-transmitter, a coupler, a low-noise amplifier, a duplexer, and the like.

[0102] The memory 1209 can be used to store software programs or commands and various data. The memory 1209 may mainly include a program or command storage area and a data storage area that can store an operating system, an application or command required for at least one function (e.g., a sound playback function, an image playback function, etc.). The memory 1209 may also include a high-speed random access memory and may also include a nonvolatile memory. Among them, the nonvolatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically erasable programmable read-only memory (Electrically EPROM, EEPROM), or a flash memory. For example, at least one magnetic disk storage device, a flash memory device, or other nonvolatile solid-state storage device may be included.

[0103] The processor 1210 may include one or more processing units, and may optionally integrate an application processor that mainly processes an operating system, a user interface, and applications or commands, etc., and a modem processor that mainly processes wireless communications, such as a baseband processor, in the processor 1210. It is understandable that the modem processor may not be integrated into the processor 1210.

[0104] Here, the radio frequency unit 1201 is for receiving a sidelink discontinuous reception command medium access control control element SL DRX command MAC CE transmitted from a second terminal, and the SL DRX command MAC CE includes a valid target and / or range of the SL DRX command MAC CE.

[0105] The processor 1210 is for performing a first operation according to a valid object and / or scope of the SL DRX command MAC CE.

[0106] Optionally, the format of the SL DRX command MAC CE is: Format 1, which contains only the MAC CE subheader and does not contain the MAC CE payload, or Includes Format 2, which includes a MAC CE subheader and a MAC CE payload.

[0107] Alternatively, if the format of the SL DRX command MAC CE is format 1, the MAC CE subheader includes a padding R field and a logical channel identifier LCID field for indicating the format of the SL DRX command MAC CE; If the format of the SL DRX command MAC CE is format 2, the MAC CE subheader includes a padding R field, a length L field for indicating the number of bytes occupied by the MAC CE payload, and a logical channel identifier LCID field for indicating the format of the SL DRX command MAC CE.

[0108] Optionally, the valid object and / or scope of the SL DRX command MAC CE is: When the format of the SL DRX command MAC CE is format 1, all information of the valid target and / or scope of the SL DRX command MAC CE is indicated by at least one of the sidelink control information SCI and the sidelink shared channel SL-SCH subheader; When the format of the SL DRX command MAC CE is format 2, all information of the valid object and / or range of the SL DRX command MAC CE is indicated by a MAC CE payload; When the SL DRX command MAC CE is format 2, the information of a first part of the validity target and / or range of the SL DRX command MAC CE is indicated by at least one of an SCI and an SL-SCH subheader, and the information of a second part of the validity target and / or range of the SL DRX command MAC CE is indicated by a MAC CE payload.

[0109] Optionally, the manner of indicating by at least one of the SCI and SL-SCH subheader is: indicating by a source address identifier included in the SCI; indicating by a destination address identifier included in the SCI; indicating by a source address field included in the SL-SCH subheader; and indicating by a destination address field included in the SL-SCH subheader.

[0110] Optionally, the method of indicating by MAC CE payload is: In the MAC CE payload, Destination address information in which each bit of the index or BitMap corresponds to the first higher layer ID; Source address information in which each bit of the index or BitMap corresponds to the second higher layer ID; At least one logical channel identifier LCID or logical channel group LCG information; Cast type information, SL DRX configuration information, where each bit of the Index or BitMap corresponds to a set of SL DRX parameters, and the set of SL DRX parameters is obtained by broadcast configuration, dedicated signaling configuration, second terminal configuration, or pre-configuration; Sidelink process information in which each bit of the index or BitMap corresponds to a SL process ID; Validity period information for indicating a validity period of the SL DRX Command MAC CE; and direction information for indicating the effective direction in which the SL DRX Command MAC CE activates / deactivates DRX.

[0111] Optionally, the processor 1210 may further stopping a SL DRX timer associated with said validity object and / or range; If the validity object and / or range includes validity period information, starting a SL DRX command MAC CE validity period timer, and after the SL DRX command MAC CE validity period timer times out, starting a SL DRX timer associated with the validity object and / or range; and if the validity object and / or range includes SL DRX configuration information, starting a SL DRX timer associated with the validity object and / or range according to the SL DRX configuration information.

[0112] In an embodiment of the present application, the SL DRX command MAC CE received by the terminal includes the valid target and / or range of the SL DRX command MAC CE, and the granularity of the valid target and / or range is finer, so as to meet the purpose of power saving for SL UE and further improve the flexibility of SL DRX power saving control.

[0113] In another alternative embodiment, the radio frequency unit 1201 is for transmitting a sidelink discontinuous reception command medium access control control element SL DRX command MAC CE to the first terminal, said SL DRX command MAC CE comprising a validity object and / or range of said SL DRX command MAC CE.

[0114] Optionally, the format of the SL DRX command MAC CE is: Format 1, which contains only the MAC CE subheader and does not contain the MAC CE payload, or Includes Format 2, which includes a MAC CE subheader and a MAC CE payload.

[0115] Alternatively, if the format of the SL DRX command MAC CE is format 1, the MAC CE subheader includes a padding R field and a logical channel identifier LCID field for indicating the format of the SL DRX command MAC CE; If the format of the SL DRX command MAC CE is format 2, the MAC CE subheader includes a padding R field, a length L field for indicating the number of bytes occupied by the MAC CE payload, and a logical channel identifier LCID field for indicating the format of the SL DRX command MAC CE.

[0116] Optionally, the valid object and / or scope of the SL DRX command MAC CE is: When the format of the SL DRX command MAC CE is format 1, all information of the valid target and / or scope of the SL DRX command MAC CE is indicated by at least one of the sidelink control information SCI and the sidelink shared channel SL-SCH subheader; When the format of the SL DRX command MAC CE is format 2, all information of the valid object and / or range of the SL DRX command MAC CE is indicated by a MAC CE payload; When the SL DRX command MAC CE is format 2, the information of a first part of the validity target and / or range of the SL DRX command MAC CE is indicated by at least one of an SCI and an SL-SCH subheader, and the information of a second part of the validity target and / or range of the SL DRX command MAC CE is indicated by a MAC CE payload.

[0117] Optionally, the manner of indicating by at least one of the SCI and SL-SCH subheader is: indicating by a source address identifier included in the SCI; indicating by a destination address identifier included in the SCI; indicating by a source address field included in the SL-SCH subheader; and indicating by a destination address field included in the SL-SCH subheader.

[0118] Optionally, the method of indicating by MAC CE payload is: In the MAC CE payload, Destination address information in which each bit of the index or BitMap corresponds to the first higher layer ID; Source address information in which each bit of the index or BitMap corresponds to the second higher layer ID; At least one logical channel identifier LCID or logical channel group LCG information; Cast type information, SL DRX configuration information, where each bit of the Index or BitMap corresponds to a set of SL DRX parameters, and the set of SL DRX parameters is obtained by broadcast configuration, dedicated signaling configuration, second terminal configuration, or pre-configuration; Sidelink process information in which each bit of the index or BitMap corresponds to a SL process ID; Validity period information for indicating a validity period of the SL DRX Command MAC CE; and direction information for indicating the effective direction in which the SL DRX Command MAC CE activates / deactivates DRX.

[0119] In an embodiment of the present application, the SL DRX command MAC CE includes the valid target and / or range of the SL DRX command MAC CE, and the granularity of the valid target and / or range is finer, so that the purpose of power saving for SL UE can be met while further improving the flexibility of SL DRX power saving control.

[0120] The embodiments of the present application further provide a readable storage medium, which stores a program or command, and when the program or command is executed by a processor, each process of the embodiment of the method for implementing sidelink discontinuous reception is realized, and the same technical effects can be achieved. In order to avoid repetition, the description will be omitted here.

[0121] Here, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0122] The embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor executes a program or command to realize each process of the embodiment of the method for implementing sidelink discontinuous reception, and can achieve the same technical effects. In order to avoid repetition, the description is omitted here.

[0123] It should be understood that the chip described in the embodiments of the present application may be referred to as a system level chip, a system chip, a chip system, a system on a chip, or the like.

[0124] It should be noted that in this specification, the terms "comprise", "consist of" or any other variants are intended to include a non-exclusive inclusion, whereby a process, method, article or apparatus that includes a set of elements includes not only those elements, but also other elements not expressly stated or inherent to such process, method, article or apparatus. Unless otherwise specified, an element limited by the phrase "comprises a" does not exclude the presence of other identical elements in the process, method, article or apparatus that includes the element. It should also be noted that the scope of the method and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may include performing functions substantially simultaneously or in the reverse order depending on such functions, for example, the described method may be performed in a different order than described, and various steps may be added, omitted or combined. Also, features described with reference to any example may be combined in other examples.

[0125] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be realized in the form of a combination of software and a necessary common hardware platform, and of course, they can be realized by hardware, but in many cases the former is a more preferred embodiment. Based on this view, the technical solution of the present application can be substantially or the part that contributes to the prior art can be embodied in the form of a computer software product, which is stored in a storage medium (e.g., ROM / RAM, magnetic disk, optical disk) and includes a number of commands that cause a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in the embodiments of the present application.

[0126] Although the examples of the present application have been described above with reference to the drawings, the present application is not limited to the above-mentioned specific embodiments, which are merely illustrative and not limiting. Based on the suggestions of the present application, many forms that a person skilled in the art can make without departing from the spirit of the present application and the scope of protection of the claims are all within the scope of protection of the present application.

Claims

1. A step of receiving a sidelink discontinuous reception command medium access control (SL DRX command MAC CE) sent by a first terminal from a second terminal, the SL DRX command MAC CE including a valid target of the SL DRX command MAC CE; The first terminal performs a first operation according to an effective object of the SL DRX command MAC CE; The step of performing a first operation includes: Stopping a SL DRX timer associated with the validity object; The format of the SL DRX command MAC CE is: Format 1 includes only a MAC CE subheader and does not include a MAC CE payload, The valid target of the SL DRX command MAC CE is: The method for realizing sidelink discontinuous reception, wherein all information on which the SL DRX command MAC CE is valid is indicated by at least one of sidelink control information (SCI) and a sidelink shared channel (SL-SCH) subheader.

2. The method for realizing sidelink discontinuous reception as described in claim 1, wherein the MAC CE subheader includes a padding R field and a logical channel identifier LCID field for indicating a format of the SL DRX command MAC CE.

3. The method of indicating by at least one of SCI and SL-SCH subheader is indicating by a source address identifier included in the SCI; indicating by a destination address identifier included in the SCI; Indicating by a source address field included in the SL-SCH subheader; and indicating the side link discontinuous reception by a destination address field included in the SL-SCH subheader.

4. The step of performing a first operation includes: If the validity object includes validity period information, starting an SL DRX command MAC CE validity period timer, and after the SL DRX command MAC CE validity period timer times out, starting an SL DRX timer associated with the validity object; and if the active object includes SL DRX configuration information, starting an SL DRX timer associated with the active object according to the SL DRX configuration information.

5. The method includes a step of a second terminal sending a sidelink discontinuous reception command medium access control (SL DRX command MAC CE) to the first terminal, the SL DRX command MAC CE including a valid object of the SL DRX command MAC CE; The format of the SL DRX command MAC CE is: Format 1 includes only a MAC CE subheader and does not include a MAC CE payload, The valid target of the SL DRX command MAC CE is: When the format of the SL DRX command MAC CE is Format 1, all information of an effective target of the SL DRX command MAC CE is indicated by at least one of a sidelink control information (SCI) and a sidelink shared channel (SL-SCH) subheader.

6. If the format of the SL DRX command MAC CE is format 1, the MAC CE subheader includes a padding R field and a logical channel identifier LCID field for indicating the format of the SL DRX command MAC CE; 6. The method of claim 5, wherein if the format of the SL DRX command MAC CE is Format 2, the MAC CE subheader includes a padding R field, a length L field for indicating a number of bytes occupied by a MAC CE payload, and a logical channel identifier LCID field for indicating a format of the SL DRX command MAC CE.

7. The method of indicating by at least one of SCI and SL-SCH subheader is indicating by a source address identifier included in the SCI; indicating by a destination address identifier included in the SCI; Indicating by a source address field included in the SL-SCH subheader; and indicating the side link discontinuous reception by a destination address field included in the SL-SCH subheader.

8. 8. A terminal comprising: a processor; a memory; and a program or command stored in the memory and executable on the processor, wherein, when the program or command is executed by the processor, steps of the method for realizing side link discontinuous reception according to any one of claims 1 to 4 or steps of the method for realizing side link discontinuous reception according to any one of claims 5 to 7 are realized.

9. A readable storage medium storing a program or command which, when executed by a processor of a first terminal, realizes steps of the method for realizing side link discontinuous reception according to any one of claims 1 to 4, or which, when executed by a processor of a second terminal, realizes steps of the method for realizing side link discontinuous reception according to any one of claims 5 to 7.

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