Wireless communication method and terminal equipment

Abstract

A wireless communication method and terminal device, the method comprising: a first terminal detecting first indication information sent by a second terminal, the first indication information being used for indicating the first terminal to enter a target state; the target state is used for indicating whether the first terminal starts a first timer or not, or the target state is used for indicating whether the first terminal receives side row data within a first time range or not; wherein the first timer is related to a sideward discontinuous reception duration timer, and the first time range is determined based on the first timer; and the first terminal sends lateral feedback information of the first indication information to the second terminal.

Description

Wireless communication method and terminal device Technical Field

[0001] The embodiments of the present application relate to the field of communications, and specifically to a method and terminal device for wireless communication. Background Art

[0002] In order to reduce the energy consumption of the terminal, it is considered to introduce a wake-up signal (WUS) in the sidelink (SL) system to instruct the receiving terminal to enter the wake-up or sleep state. However, the network environment is complex and changeable. How to ensure that the transmitting terminal and the receiving terminal have a consistent understanding of the receiving terminal's state, thereby ensuring the reliability of sidelink transmission, is an urgent problem that needs to be solved.

[0003] Summary of the Invention

[0004] The present application provides a wireless communication method and terminal device, which are conducive to ensuring that a transmitting terminal and a receiving terminal have consistent understanding of the status of the receiving terminal, thereby ensuring the reliability of side transmission.

[0005] In a first aspect, a method for wireless communication is provided, including: a first terminal detecting first indication information sent by a second terminal, the first indication information being used to indicate that the first terminal enters a target state; the target state being used to indicate whether the first terminal starts a first timer, or the target state being used to indicate whether the first terminal receives sidelink data within a first time range; wherein the first timer is related to a sidelink discontinuous reception duration timer, and the first time range is determined based on the first timer; and the first terminal sending sidelink feedback information of the first indication information to the second terminal.

[0006] In a second aspect, a method for wireless communication is provided, including: a second terminal sends first indication information to a first terminal, the first indication information is used to indicate that the first terminal enters a target state, the target state is used to indicate whether the first terminal starts a first timer, or the target state is used to indicate whether the first terminal receives sidelink data within a first time range; wherein the first timer is related to a sidelink discontinuous reception duration timer, and the first time range is determined based on the first timer; and sidelink feedback information of the first indication information sent by the first terminal is received.

[0007] In a third aspect, a terminal device is provided for executing the method in the above-mentioned first aspect or its various implementations.

[0008] Specifically, the terminal device includes a functional module for executing the method in the above-mentioned first aspect or its various implementation modes.

[0009] In a fourth aspect, a terminal device is provided for executing the method in the above-mentioned second aspect or its various implementations.

[0010] Specifically, the network device includes a functional module for executing the method in the above-mentioned second aspect or its various implementation modes.

[0011] In a fifth aspect, a terminal device is provided, comprising a processor and a memory, wherein the memory is configured to store a computer program, and the processor is configured to call and execute the computer program stored in the memory to perform the method of the first aspect or its respective implementations.

[0012] In a sixth aspect, a terminal device is provided, comprising a processor and a memory, wherein the memory is configured to store a computer program, and the processor is configured to call and execute the computer program stored in the memory to perform the method of the second aspect or its respective implementations.

[0013] In a seventh aspect, a chip is provided for implementing the method described in any one of the first and second aspects above, or their respective implementations. Specifically, the chip includes a processor configured to retrieve and execute a computer program from a memory, causing a device equipped with the chip to perform the method described in any one of the first and second aspects above, or their respective implementations.

[0014] In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, which enables a computer to execute the method of any one of the first to second aspects or their respective implementations.

[0015] In a ninth aspect, a computer program product is provided, comprising computer program instructions, wherein the computer program instructions enable a computer to execute the method of any one of the first to second aspects or their respective implementations.

[0016] In a tenth aspect, a computer program is provided, which, when executed on a computer, enables the computer to execute the method of any one of the first to second aspects or their respective implementations.

[0017] Through the above technical solution, the transmitting terminal sends a first indication message to the receiving terminal, instructing the receiving terminal to enter the target state. The receiving terminal can send side feedback information of the first indication message to the transmitting terminal based on the detection state of the first indication message, so that the transmitting terminal can determine whether the receiving terminal starts the SL-DRX duration timer (sl-drx-onDurationTimer) or whether the receiving terminal enters the activation state (or activation period) based on the side feedback information, and then determine whether to send side data to the receiving terminal within the time range corresponding to the SL-DRX duration timer (sl-drx-onDurationTimer), thereby avoiding the problem of side data transmission failure due to inconsistent understanding of the status of the receiving terminal by the transmitting terminal and the receiving terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a schematic diagram of a communication system architecture provided by the present application.

[0019] FIG2 is a schematic diagram of another communication system architecture provided by the present application.

[0020] FIG3 is a schematic diagram of sideline communication within a network coverage area provided by the present application.

[0021] FIG4 is a schematic diagram of a partial network coverage side communication provided by the present application.

[0022] FIG5 is a schematic diagram of an external communication outside the network coverage provided by the present application.

[0023] FIG6 is a schematic diagram of a unicast sideline communication provided by the present application.

[0024] FIG7 is a schematic diagram of a multicast side communication provided by the present application.

[0025] FIG8 is a schematic diagram of a broadcast sideline communication provided by the present application.

[0026] Figures 9 and 10 are schematic diagrams of the time slot structure in the NR SL system.

[0027] FIG11 is a schematic diagram of a terminal energy saving mechanism based on an energy saving signal.

[0028] FIG12 is a schematic interaction diagram of a wireless communication method provided in an embodiment of the present application.

[0029] FIG13 is a schematic diagram of a time domain position of a second time domain resource according to an embodiment of the present application.

[0030] FIG14 is a schematic diagram of another time domain position of a second time domain resource according to an embodiment of the present application.

[0031] Figure 15 is a schematic diagram of time domain resources of a first indication information provided in an embodiment of the present application.

[0032] Figure 16 is a schematic diagram of another time domain resource of the first indication information provided in an embodiment of the present application.

[0033] FIG17 is a schematic diagram of time domain resources of another first indication information provided in an embodiment of the present application.

[0034] FIG18 is a schematic diagram of time domain resources of a first side channel provided in an embodiment of the present application.

[0035] Figure 19 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.

[0036] Figure 20 is a schematic block diagram of another terminal device provided according to an embodiment of the present application.

[0037] Figure 21 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

[0038] Figure 22 is a schematic block diagram of a chip provided according to an embodiment of the present application.

[0039] Figure 23 is a schematic block diagram of a communication system provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0040] The following will describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. With respect to the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0041] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

[0042] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, or vehicle-to-everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0043] Optionally, the communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) networking scenario.

[0044] Optionally, the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, where the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, where the authorized spectrum can also be considered as an unshared spectrum.

[0045] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

[0046] The terminal device can be a station (ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0047] In an embodiment of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons and satellites, etc.).

[0048] In an embodiment of the present application, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0049] As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices may also be called wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are fully functional, large in size, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0050] In an embodiment of the present application, the network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in WLAN, a base station (BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device or base station (gNB) in an NR network, or a network device in a future evolved PLMN network or a network device in an NTN network, etc.

[0051] As an example and not a limitation, in an embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. Alternatively, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station set up in a location such as land or water.

[0052] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0053] It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" is simply a description of an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the related objects are in an "or" relationship.

[0054] The terms used in the embodiments of this application are intended only to explain the specific embodiments of this application and are not intended to limit this application. The terms "first," "second," "third," and "fourth," etc. in the specification and claims of this application and the accompanying drawings are used to distinguish different objects, not to describe a specific order. In addition, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions.

[0055] It should be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0056] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0057] In the embodiments of the present application, "pre-definition" or "pre-configuration" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., a terminal device and a network device). The present application does not limit the specific implementation method. For example, pre-definition may refer to information defined in a protocol.

[0058] In the embodiments of the present application, the “protocol” may refer to a standard protocol in the communications field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0059] Figure 1 is a schematic diagram of a communication system applicable to embodiments of the present application. Transmission resources for vehicle-mounted terminals (vehicle-mounted terminal 121 and vehicle-mounted terminal 122) are allocated by base station 110. The vehicle-mounted terminals transmit data on the sidelink based on the resources allocated by base station 110. Specifically, base station 110 can allocate resources for a single transmission to a terminal, or it can allocate resources for semi-static transmission to the terminal.

[0060] Figure 2 is a schematic diagram of another communication system applicable to an embodiment of the present application. Vehicle-mounted terminals (vehicle-mounted terminal 131 and vehicle-mounted terminal 132) autonomously select transmission resources on the sidelink for data transmission. Alternatively, the vehicle-mounted terminals can select transmission resources randomly or through interception.

[0061] It should be noted that in side communication, according to the network coverage of the communicating terminal, it can be divided into side communication within the network coverage, as shown in Figure 3; side communication with partial network coverage, as shown in Figure 4; and side communication outside the network coverage, as shown in Figure 5.

[0062] Figure 3: In sideline communication within network coverage, all terminals performing sideline communication are within the coverage of the base station. Therefore, all of the above terminals can perform sideline communication based on the same sideline configuration by receiving configuration signaling from the base station.

[0063] Figure 4: In the case of partial network coverage and sidelink communication, some terminals performing sidelink communication are within the coverage area of ​​the base station. These terminals can receive configuration signaling from the base station and perform sidelink communication according to the base station's configuration. However, terminals outside the network coverage area cannot receive configuration signaling from the base station. In this case, terminals outside the network coverage area will determine the sidelink configuration based on pre-configuration information and information carried in the Physical Sidelink Broadcast Channel (PSBCH) sent by terminals within the network coverage area to perform sidelink communication.

[0064] Figure 5: For sideline communication outside network coverage, all terminals performing sideline communication are located outside the network coverage area, and all terminals determine the sideline configuration according to pre-configuration information to perform sideline communication.

[0065] It should be noted that device-to-device communication (D2D) is a sidelink (SL) transmission technology based on device-to-device (D2D). Unlike traditional cellular systems, where communication data is received or sent via base stations, the connected vehicle system uses direct device-to-device communication, resulting in higher spectrum efficiency and lower transmission latency. 3GPP defines two transmission modes: Mode 1 and Mode 2.

[0066] Mode 1: The terminal's transmission resources are allocated by the base station, and the terminal transmits data on the sidelink based on the allocated resources. The base station can allocate resources for either single transmission or semi-static transmission. As shown in Figure 3, when the terminal is within network coverage, the network allocates transmission resources for sidelink transmission.

[0067] Mode 2: The terminal selects a resource from the resource pool for data transmission. As shown in Figure 5, if the terminal is outside the cell coverage area, it autonomously selects a transmission resource from the pre-configured resource pool for sideline transmission. Alternatively, as shown in Figure 3, the terminal autonomously selects a transmission resource from the network-configured resource pool for sideline transmission.

[0068] The NR SL system supports unicast, multicast, and broadcast transmission modes. For unicast transmission, there is only one receiving terminal. As shown in Figure 6, unicast transmission is performed between UE1 and UE2. For multicast transmission, the receiving terminals are all terminals in a communication group, or all terminals within a certain transmission distance. As shown in Figure 7, UE1, UE2, UE3, and UE4 form a communication group, where UE1 sends data and the other terminal devices in the group are receiving terminals. For broadcast transmission, the receiving terminal is any terminal around the sending terminal. As shown in Figure 8, UE1 is the sending terminal, and the other terminals around it, UE2-UE6, are all receiving terminals.

[0069] To facilitate a better understanding of the embodiments of the present application, the time slot structure in the NR SL system is explained in combination with Figures 9 and 10.

[0070] FIG9 shows a time slot structure in which a physical sidelink feedback channel (PSFCH) is not included in the time slot; FIG10 shows a time slot structure in which the PSFCH is included.

[0071] In the NR SL system, the Physical Sidelink Control Channel (PSCCH) begins in the time domain at the second sidelink symbol of the timeslot, occupies two or three OFDM symbols, and can occupy {10, 12, 15, 20, 25} physical resource blocks (PRBs) in the frequency domain. To reduce the complexity of blind PSCCH detection by the UE, only one number of PSCCH symbols and PRBs is allowed in a resource pool. Furthermore, because the sub-channel is the minimum granularity for physical sidelink shared channel (PSSCH) resource allocation in NR SL, the number of PRBs occupied by the PSCCH must be less than or equal to the number of PRBs contained in a sub-channel in the resource pool to avoid additional restrictions on PSSCH resource selection or allocation. The PSSCH also begins in the time domain at the second sidelink symbol of the timeslot. The last time-domain symbol in the timeslot is the guard period (GP) symbol, and the remaining symbols are mapped to the PSSCH. The first sidelink symbol in this time slot is a repetition of the second sidelink symbol. The receiving terminal typically uses the first sidelink symbol as an automatic gain control (AGC) symbol, and the data on this symbol is not typically used for data demodulation. The receiving terminal uses this symbol time for AGC training or adjustment, so this symbol is also called an AGC symbol. The PSSCH occupies P subchannels in the frequency domain, each consisting of Q consecutive PRBs, where P and Q are positive integers, as shown in Figure 9.

[0072] When a time slot contains PSFCH, the second-to-last and third-to-last symbols in the time slot are used for PSFCH channel transmission, where the data on the third-to-last symbol is a repetition of the data on the second-to-last symbol. This symbol can also be called an AGC symbol. The time domain symbol before the PSFCH channel is used as a GP symbol, as shown in Figure 10.

[0073] To facilitate understanding of the embodiments of the present application, the terminal energy saving mechanism in the NR system is described.

[0074] Since the energy consumption of a terminal in a connected state accounts for the vast majority of the terminal's energy consumption, a wake-up signal is introduced to save energy for a terminal in a Radio Resource Control (RRC) connected state.

[0075] The traditional terminal energy-saving mechanism is mainly the discontinuous reception (DRX) mechanism. When DRX is configured, the terminal monitors the physical downlink control channel (PDCCH) within the DRX activation time. If data scheduling is received, the terminal continues to monitor the PDCCH based on the control of the DRX timer until the data transmission is completed; otherwise, if the terminal does not receive data scheduling within the DRX activation time, the terminal enters the inactive period to achieve energy saving. It can be seen that DRX is an energy-saving control mechanism with the DRX cycle as the time granularity, so it cannot achieve optimal power consumption control. For example, even if the terminal has no data scheduling, the terminal must periodically start the DRX ON Duration timer and monitor the PDCCH while the timer is running, so there is still power waste.

[0076] In order to achieve further energy saving of the terminal, NR energy saving enhancement introduces an energy saving signal (or wake-up signal, energy saving wake-up signal). The energy saving signal is used in conjunction with the DRX mechanism. The specific technical principle is that the terminal receives an indication of the energy saving signal before the DRX ON duration. As shown in Figure 11, when the terminal has data transmission in a DRX cycle, the energy saving signal "wakes up" the terminal to monitor the PDCCH during the DRX ON duration; otherwise, when the terminal has no data transmission in a DRX cycle, the energy saving signal does not "wake up" the terminal, and the terminal does not need to monitor the PDCCH during the DRX ON Duration. Compared with the DRX mechanism, when the terminal has no data transmission, the terminal can omit monitoring the PDCCH during the DRX ON duration, thereby achieving energy saving of the terminal.

[0077] During the sidelink communication process, due to the power saving requirements of the terminal, appropriate power-saving technologies should be introduced to reduce the energy consumption of the UE. If the receiving UE is always in an active state during the sidelink communication process, this continuous reception behavior will cause some unnecessary energy consumption. Therefore, it is considered to introduce a sidelink discontinuous reception (SL-DRX) mechanism to meet the power saving requirements in the sidelink communication by controlling the "activation" and "inactivation" of the UE's receiving behavior on the sidelink. If the UE is configured / pre-configured with SL-DRX, the UE is allowed not to receive PSCCH / PSSCH during the SL-DRX inactive time to save terminal power consumption.

[0078] For a receiving UE using SL-DRX, its activation time includes the running time of the SL-DRX duration timer (sl-drx-onDurationTimer), the running time of the SL-DRX inactivity timer (sl-drx-InactivityTimer), the running time of the SL-DRX retransmission timer (sl-drx-RetransmissionTimer), and a period of time after sending a CSI report request. During the activation time of the UE, the UE performs sidelink control information (SCI) detection for the purpose of data reception (including the first-order SCI on the PSCCH and the second-order SCI on the PSSCH). The UE can skip the detection of the SCI for the purpose of data reception during the inactivity time of SL-DRX.

[0079] In sidelink communication, some timers can be defined to control the SL-DRX behavior:

[0080] SL-DRX duration timer (sl-drx-onDurationTimer): Periodic DRX activation timer, the length of time the UE waits to receive PSCCH / PSSCH after activation. If the UE successfully decodes the PSCCH / PSSCH, the UE starts the inactivity timer and remains active;

[0081] SL-DRX inactivity timer (sl-drx-InactivityTimer): Before the timer expires, the UE remains active and waits to receive the next new PSCCH / PSSCH transmission. Each time new data is received, the UE restarts the timer.

[0082] SL-DRX Retransmission Timer (sl-drx-RetransmissionTimer): The maximum time that the UE remains active and waits to receive the next retransmission of PSCCH / PSSCH for a specific sidelink transmission process;

[0083] SL-DRX Round Trip Timer (sl-drx-HARQ-RTT-Timer): The UE does not expect to receive retransmissions for a specific sidelink transmission process before this timer expires.

[0084] SL-DRX cycle (sl-drx-Cycle): The length of time between the start of one SL-DRX duration and the start of the next SL-DRX duration.

[0085] In order to further reduce the energy consumption of the terminal, it is considered to introduce a wake-up signal (WUS) or a sleep (Gotosleep) signal in the SL system to instruct the receiving terminal to enter the wake-up or sleep state; however, if the WUS indicates the wake-up state, the transmitting terminal will believe that the receiving terminal is in the wake-up state during the activation period. However, if the receiving terminal fails to correctly detect the WUS, the receiving terminal will not enter the wake-up state, and will not receive the sidelink data subsequently sent by the transmitting terminal, resulting in data reception failure.

[0086] How to ensure that the transmitting terminal and the receiving terminal have the same understanding of the status of the receiving terminal, thereby ensuring the reliability of side transmission, is an issue that needs to be solved urgently.

[0087] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The above related technologies can be combined arbitrarily with the technical solutions of the embodiments of the present application as optional solutions, and all of them fall within the scope of protection of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0088] FIG12 is a schematic interaction diagram of a wireless communication method 200 according to an embodiment of the present application. As shown in FIG12 , the method 200 includes at least part of the following:

[0089] S210: A first terminal detects first indication information sent by a second terminal, where the first indication information is used to instruct the first terminal to enter a target state.

[0090] S220: The first terminal sends sidelink feedback information of the first indication information to the second terminal.

[0091] In some embodiments, the target state is used to indicate whether the first terminal starts a first timer, or the target state is used to indicate whether the first terminal receives sidelink data within a first time range; wherein, the first timer is related to the sidelink discontinuous reception duration timer (sl-drx-onDurationTimer), and the first time range is determined based on the first timer, for example, the first time range is a time range determined based on the SL-DRX duration timer (sl-drx-onDurationTimer).

[0092] In some embodiments, the first timer is related to a sidelink discontinuous reception duration timer (sl-drx-onDurationTimer), which may include: the first timer is a SL-DRX duration timer (sl-drx-onDurationTimer).

[0093] In some embodiments, the first time range is determined based on the first timer and may include:

[0094] The starting position of the first time range is determined according to the time when the SL-DRX duration timer is started, and the duration of the first time range is determined according to the duration corresponding to the SL-DRX duration timer. For example, the first time range is the time range corresponding to the operation period of the SL-DRX duration timer.

[0095] Optionally, the sidelink data may be sidelink data sent by the second terminal, or may be sidelink data sent by other terminals, which is not limited in this application.

[0096] Optionally, receiving sideline data may include but is not limited to receiving PSCCH or PSSCH, that is, including SCI detection.

[0097] Optionally, the measurement may refer to a sidelink measurement, for example including but not limited to a sidelink reference signal received power (SL-RSRP) measurement and / or a sidelink received signal strength indication (SL-RSSI) measurement.

[0098] Alternatively, the first indication information can also be used to indicate whether the first terminal enters an activated state or an activated period, or the first indication information is used to indicate whether the first terminal starts a first timer, or the first indication information is used to indicate whether the first terminal receives sidelink data and / or performs measurements within a first time range; wherein, the first timer is related to the SL-DRX duration timer (sl-drx-onDurationTimer), and the first time range is determined based on the first timer.

[0099] In some embodiments, the first terminal determines whether to enter an active state or an active period, or whether to start a first timer, or whether to receive sidelink data and / or perform measurements within a first time range based on the first indication information.

[0100] For example, when the first indication information indicates a first value (such as the first value is "1" or "TRUE") or a first state (such as an activated state or an awake state), the first terminal enters an activated period, or the first terminal starts the SL-DRX duration timer, or the first terminal receives sidelink data and / or performs measurements within a first time range; when the first indication information indicates a second value (such as the second value is "0" or "FALSE") or a second state (such as an inactivated state or a dormant state), the first terminal does not enter an activated period, or the first terminal does not start the SL-DRX duration timer, or the first terminal does not receive sidelink data and / or perform measurements within the first time range.

[0101] In some embodiments, the target state is a first state or a second state, and the first state and the second state are different DRX states. For example, the first state is a wake-up state, and the second state is a go-to-sleep state. For another example, the first state is an active state, and the second state is an inactive state.

[0102] In some embodiments, if the target state is an awake state or an active state, it indicates that the first terminal receives sidelink data and / or performs measurement within a first time range, or the first terminal needs to start an SL-DRX duration timer (sl-drx-onDurationTimer), or the first terminal enters an active period. The first time range is a time range determined based on the SL-DRX duration timer (sl-drx-onDurationTimer).

[0103] In some embodiments, if the target state is a dormant state or an inactive state, it means that the first terminal does not receive sidelink data and / or perform measurement within a first time range, or the first terminal does not start the SL-DRX duration timer (sl-drx-onDurationTimer), or the first terminal does not enter an active period, or enters an inactive period. The first time range is a time range determined based on the SL-DRX duration timer (sl-drx-onDurationTimer).

[0104] In some embodiments, the first terminal entering the awake state may refer to the first terminal receiving and / or measuring side data within a first time range, or the first terminal entering the awake state may refer to the first terminal starting the SL-DRX duration timer (sl-drx-onDurationTimer), or the first terminal entering the awake state may refer to the first terminal entering the activation period, wherein the first time range may be determined based on the running period of the SL-DRX duration timer (sl-drx-onDurationTimer), for example, the running period of the SL-DRX duration timer is the activation period of the first terminal, and the first time range is the activation period determined based on the running period of the SL-DRX duration timer; the first terminal entering the dormant state may refer to the first terminal not receiving and / or measuring side data within the time range determined based on the SL-DRX duration timer (sl-drx-onDurationTimer), or the first terminal entering the dormant state may refer to the first terminal not starting the SL-DRX duration timer (sl-drx-onDurationTimer), or the first terminal entering the dormant state may refer to the first terminal not entering the activation period.

[0105] In some embodiments, the first indication information is also called a wake-up signal, a sleep signal, or a power-saving signal. The first indication information instructs the first terminal to enter a wake-up state or a sleep state, thereby achieving power saving of the first terminal.

[0106] In some embodiments, the first indication information is also called an activation signal, a non-activation signal, or a deactivation signal. The first indication information is used to instruct the first terminal to enter an activation state or a non-activation state, thereby achieving energy saving of the first terminal.

[0107] In some embodiments, the side feedback information of the first indication information can be used to indicate the detection state or the reception status of the first indication information. For example, the side feedback information of the first indication information can be determined according to the detection state or the reception status of the first indication information.

[0108] In some embodiments, the detection status of the first indication information may include successful detection of the first indication information (i.e., the first indication information is received and decoded successfully), no first indication information is received, and the first indication information is received but decoding fails. The latter two situations can be considered as failure to successfully detect the first indication information, or, in other words, failure to detect the first indication information.

[0109] In some embodiments, the sidelink feedback information of the first indication information may be used by the second terminal to determine whether the first terminal starts an SL-DRX duration timer (sl-drx-onDurationTimer), or used by the second terminal to determine whether the first terminal enters an active period, or used by the second terminal to determine whether to send sidelink data to the first terminal during the active period. The active period is determined based on the SL-DRX duration timer (sl-drx-onDurationTimer).

[0110] In some embodiments, the sideline feedback information of the first indication information may be an Acknowledgement (ACK) or a Negative Acknowledgement (NACK).

[0111] For example, if the first terminal successfully detects the first indication information, it feeds back an ACK to the second terminal; or if the first terminal fails to successfully detect the first indication information, it feeds back a NACK to the second terminal.

[0112] Correspondingly, the second terminal can determine the true status of the first terminal based on the side feedback information of the first indication information sent by the first terminal, thereby avoiding the problem of inconsistent understanding of the status of the first terminal by the first terminal and the second terminal, resulting in failure of side data transmission.

[0113] For example, if the first indication information indicates that the first terminal enters the awake state and the first terminal feeds back ACK, the second terminal can determine that the first terminal successfully detects the first indication information, that is, the first terminal will start the SL-DRX duration timer (sl-drx-onDurationTimer) according to the indication of the first indication information and enter the awake state or activation state, then the second terminal can send sidelink data to the first terminal within the running time of the SL-DRX duration timer (sl-drx-onDurationTimer); or, if the first terminal feeds back NACK, the second terminal can determine that the first terminal has not successfully detected the first indication information, that is, the first terminal will not start the SL-DRX duration timer (sl-drx-onDurationTimer), then the second terminal will not send sidelink data to the first terminal within the time range corresponding to the SL-DRX duration timer (sl-drx-onDurationTimer).

[0114] Therefore, in an embodiment of the present application, the first terminal can send sideline feedback information of the first indication information to the second terminal based on the detection status of the first indication information, so that the second terminal can determine whether the first terminal starts the SL-DRX duration timer (sl-drx-onDurationTimer) or whether the first terminal enters the activation state (or activation period) based on the sideline feedback information, and then determine whether to send sideline data to the first terminal within the time range corresponding to the SL-DRX duration timer (sl-drx-onDurationTimer), thereby avoiding the problem of sideline data transmission failure due to inconsistent understanding of the status of the receiving terminal by the transmitting terminal and the receiving terminal.

[0115] In some embodiments, the first indication information is carried by a sequence, that is, the wake-up signal may be a sequence-based signal.

[0116] In some embodiments, the first indication information may be carried by a sidelink signal or a sidelink channel, wherein the sidelink signal or the sidelink channel may be an existing sidelink signal or a sidelink channel, or a newly added sidelink signal or a sidelink channel. For example, the first indication information may be carried by an SCI or a MAC CE, and the SCI may be in an existing SCI format or a newly defined SCI format.

[0117] In some embodiments, the sidelink feedback information of the first indication information is carried via a first sidelink channel.

[0118] For example, the first terminal sends a first sidelink channel to the second terminal, where the first sidelink channel is used to carry the sidelink feedback information.

[0119] Optionally, the first sidelink channel may be a physical sidelink feedback channel (PSFCH), that is, the sidelink feedback information may be carried by the PSFCH.

[0120] In some embodiments, the first sidelink channel is transmitted in a second time domain resource, and the second time domain resource is related to the first time domain resource, wherein the first time domain resource is related to the time domain position of the activation period of the first terminal. Optionally, the first time domain resource is determined according to the start time of the sidelink discontinuous reception SL-DRX duration timer (sl-drx-onDurationTimer) or the beginning of the SL-DRX cycle (the beginning of the SL DRX cycle), for example, the first time domain resource can be the start time of the SL-DRX duration timer or the starting position of the SL-DRX cycle.

[0121] In some embodiments, the correlation between the second time domain resource and the first time domain resource may include that the starting position of the second time domain resource is correlated with the starting position or ending position of the first time domain resource, or the ending position of the second time domain resource is correlated with the starting position or ending position of the first time domain resource.

[0122] For example, the starting position of the second time domain resource can be determined according to the starting position or the ending position of the first time domain resource, or the ending position of the second time domain resource can be determined according to the starting position or the ending position of the first time domain resource.

[0123] It should be understood that the present application does not limit the timing relationship between the second time domain resource and the first time domain resource, for example, the second time domain resource is before the first time domain resource, or the second time domain resource is after the first time domain resource.

[0124] In some embodiments, the time interval between the second time domain resource (specifically, for example, the starting position or ending position of the second time domain resource) and the first time domain resource (specifically, for example, the starting position or ending position of the first time domain resource) is greater than or equal to the first time interval. For example, the second time domain resource precedes the first time domain resource, and the interval is greater than or equal to the first time interval. For another example, the second time domain resource follows the first time domain resource, and the interval is greater than or equal to the first time interval. The value of the first time interval is greater than or equal to 0.

[0125] In some embodiments, the first time interval is predefined, preconfigured, configured by a network device, determined by the first terminal (optionally, the first terminal may further indicate the determined first time interval to the second terminal), or indicated by the second terminal to the first terminal. When the first time interval is indicated by the second terminal or the first terminal, the second terminal or the first terminal indicates the first time interval via SCI, MACCE, or PC5-RRC signaling.

[0126] In some embodiments, the second time domain resource is before the first time domain resource, and the first time interval can be determined based on the processing time of the first terminal or the second terminal, for example, the first time interval is greater than or equal to the processing time of the second terminal. For example, the processing time of the second terminal is determined based on the time it takes for the second terminal to process the first sideline channel, and the first time interval is greater than or equal to the processing time of the second terminal, so that the second terminal can determine whether the first terminal has entered the activation period based on the sideline feedback information carried by the first sideline channel, and further determine whether it can send sideline data to the first terminal during the activation period, wherein the activation period includes an activation period determined based on the SL-DRX duration timer (sl-drx-onDurationTimer).

[0127] In some embodiments, the first indication information is sent in a third time domain resource, and the third time domain resource has an association relationship with the first time domain resource and / or the second time domain resource (including a starting position or an ending position). Optionally, the association relationship is predefined, preconfigured, or configured by a network device, and is indicated by the first terminal to the second terminal, or by the second terminal to the first terminal, that is, the first terminal and the second terminal have the same understanding of the association relationship.

[0128] In some embodiments, the third time domain resource having an association relationship with the first time domain resource and / or the second time domain resource may include:

[0129] The starting position of the third time domain resource is associated with the starting position or the ending position of the first time domain resource, and / or the starting position or the ending position of the second time domain resource; or

[0130] The end position of the third time domain resource and the start position or end position of the first time domain resource, and / or the start position or end position of the second time domain resource are associated with each other.

[0131] For example, the starting position of the third time domain resource is determined according to the starting position of the first time domain resource and / or the starting position of the second time domain resource.

[0132] For another example, the end position of the third time domain resource is determined according to the end position of the first time domain resource and / or the end position of the second time domain resource.

[0133] In some embodiments, the time interval between the third time domain resource (specifically, for example, the starting position or ending position of the third time domain resource) and the second time domain resource (specifically, for example, the starting position or ending position of the second time domain resource) is greater than or equal to the second time interval, and / or the time interval between the third time domain resource (specifically, for example, the starting position or ending position of the third time domain resource) and the first time domain resource (specifically, for example, the starting position or ending position of the first time domain resource) is greater than or equal to the third time interval.

[0134] For example, the starting position of the third time domain resource is before the starting position of the second time domain resource, and the interval between the two is greater than or equal to the second time interval.

[0135] For another example, the starting position of the third time domain resource is before the starting position of the first time domain resource, and the interval between the two is greater than or equal to the third time interval.

[0136] In some embodiments, the second time interval is predefined, preconfigured, configured by a network device, determined by the first terminal (optionally, the first terminal may further indicate the determined second time interval to the second terminal), or indicated by the second terminal. When the second time interval is indicated by the second terminal or the first terminal, the second terminal or the first terminal may indicate the second time interval via SCI, MACCE, or PC5-RRC signaling.

[0137] In some embodiments, the third time interval is predefined, preconfigured, configured by a network device, determined by the first terminal (optionally, the first terminal may further indicate the determined third time interval to the second terminal), or indicated by the second terminal. When the third time interval is indicated by the second terminal or the first terminal, the second terminal or the first terminal indicates the third time interval via SCI, MACCE, or PC5-RRC signaling.

[0138] In some embodiments, the second time interval can be determined based on the processing time of the first indication information. For example, when the first indication information is carried through SCI or MAC CE, the processing time may include the detection time of PSCCH / PSSCH (that is, including the detection time of SCI). Furthermore, the processing time may also include the preparation time of PSFCH (side feedback information is carried through the PSFCH).

[0139] In some embodiments, the second time interval may be determined based on a parameter sideline PSFCH minimum time interval parameter (sl-MinTimeGapPSFCH), for example, which is used to indicate a minimum time interval between a PSFCH and its associated PSSCH.

[0140] It should be understood that the present application does not limit the representation method of the first time domain resources, the second time domain resources and the third time domain resources. For example, absolute time representation, such as moment, can be used, or relative time representation, such as time slot, symbol, etc. can be used.

[0141] For example, as shown in Figure 13, a DRX cycle includes an activation period and an inactivation period. In the example of Figure 13, the activation period is determined based on the SL-DRX duration timer (sl-drx-onDurationTimer), the start time of the SL-DRX duration timer (sl-drx-onDurationTimer corresponds to the first time domain resource, the transmission position of the sidelink feedback information of the first indication information (i.e., the second time domain resource) is located before the first time domain resource, and the time interval between the sidelink feedback information and the first time domain resource is greater than the first time interval, and the transmission position of the first indication information (i.e., the third time domain resource) is located before the second time domain resource, and the time interval between the sidelink feedback information and the second time domain resource is greater than the second time interval.

[0142] For example, as shown in Figure 14, a DRX cycle includes an activation period and a non-activation period. In the example of Figure 14, the activation period is determined based on the SL-DRX duration timer (sl-drx-onDurationTimer), the start time of the SL-DRX duration timer (sl-drx-onDurationTimer corresponds to the first time domain resource, the transmission position of the sidelink feedback information of the first indication information (i.e., the second time domain resource) is located before the first time domain resource, and the time interval between the sidelink feedback information and the first time domain resource is greater than the first time interval, and the transmission position of the first indication information (i.e., the third time domain resource) is located before the first time domain resource, and the time interval between the sidelink feedback information and the first time domain resource is greater than the third time interval.

[0143] It should be understood that Figures 13 and 14 only illustrate the example of the second time domain resource being located before the first time domain resource, but the present application is not limited to this. The second time domain resource may also be located after the first time domain resource.

[0144] The design of the first indication information and the side feedback information is described below in conjunction with specific embodiments.

[0145] Embodiment 1: The first indication information is carried by a sequence.

[0146] In some embodiments, when the first indication information is a first sequence, it is used to instruct the first terminal to enter a first state, such as an awake state or an activated state.

[0147] In some embodiments, when the first indication information is a second sequence, it is used to instruct the first terminal to enter a second state, such as a sleep state or an inactive state.

[0148] In some embodiments, the transmission resource of the first indication information (or the transmission resource of the sequence) includes 2 symbols.

[0149] In some embodiments, the two symbols are two adjacent symbols in one time slot.

[0150] In some embodiments, the two symbols include the second to last symbol and the third to last symbol in the time slot that can be used for sideline transmission. Optionally, the same data is transmitted on the two symbols.

[0151] Optionally, when the first indication information is carried by a sequence, the sequence may be transmitted independently of other sidelink physical channels, that is, the sequence and other sidelink physical channels are not multiplexed for transmission.

[0152] Optionally, the time domain resources used to send the first indication information can also be used to send other side signals or side channels. The other side signals or side channels occupy the same time domain resources in the time slot as the first indication information. For example, if the first indication information occupies symbols 11 and 12 in the time slot (the first symbol in the time slot is symbol 0, and the time slot includes a total of 14 symbols), then the other side signals or side channels also occupy symbols 11 and 12 in the time slot.

[0153] Optionally, the time domain resources used to send the first indication information can also be used to send PSFCH, or the time domain resources for sending PSFCH can also be used to send the first indication information; that is, PSFCH and the first indication information are located in the same time domain resources, and further optionally, PSFCH and the first indication information can be located in the same time domain symbol.

[0154] For example, as shown in Figure 15, all symbols in a time slot are symbols that can be used for side transmission, the second to last and the third to last time domain symbols in the time slot are used to carry the first indication information, the data transmitted on the two time domain symbols can be the same, and the first time domain symbol can be used as AGC, and the fourth to last time domain symbol in the time slot is used as a GP symbol.

[0155] In some embodiments, the frequency domain resources of the sequence include M PRBs, where M is an integer greater than or equal to 1.

[0156] In some embodiments, the value of M is determined based on predefined information, preconfigured information, or network configuration information.

[0157] That is, M can be predefined, preconfigured, or network device configured.

[0158] In some embodiments, the sequence used to carry the first indication information can be expressed as:

[0159] in, Indicates the length of the sequence, represents the root sequence, α represents the cyclic shift, Indicates the number of subcarriers included in an RB, for example

[0160] In some embodiments, the sequence used to carry the first indication information is related to at least one of the following information. For example, the sequence used to carry the first indication information can be determined based on at least one of the following information:

[0161] Pre-configuration parameters, parameters configured by the network device, identification information of the first terminal, identification information of the second terminal, group identification information of the communication group to which the first terminal belongs, group identification information of the communication group to which the second terminal belongs, content indicated by the first indication information, time slot information corresponding to the transmission resource of the first indication information, symbol information corresponding to the transmission resource of the first indication information, the total number of subcarriers included in M ​​PRBs, the number of subcarriers included in one PRB, and the length of the sequence.

[0162] In some embodiments, the identification information of the first terminal may be determined based on source identification information carried in an SCI sent by the first terminal to the second terminal, or may be determined based on destination identification information carried in an SCI sent by the second terminal to the first terminal. Determining the sequence of carrying the first indication information based on the identification information of the first terminal can result in different sequences corresponding to the first indication information sent to different terminals, thereby avoiding mutual interference.

[0163] In some embodiments, the identification information of the second terminal may be determined based on source identification information carried in an SCI sent by the second terminal to the first terminal, or may be determined based on destination identification information carried in an SCI sent by the first terminal to the second terminal. Determining the sequence of carrying the first indication information based on the identification information of the second terminal may enable the first indication information sent by different terminals to correspond to different sequences, thereby avoiding mutual interference.

[0164] In some embodiments, the group identification information of the communication group to which the first terminal belongs may be determined based on the destination identification information carried in the SCI sent by the second terminal to the communication group to which the first terminal belongs. Determining the sequence of the first indication information based on the group identification information of the communication group to which the first terminal belongs can ensure that the first indication information sent to different terminal groups corresponds to different sequences, thereby avoiding mutual interference.

[0165] In some embodiments, the group identification information of the communication group to which the second terminal belongs can be determined based on the destination identification information carried in the SCI sent by the first terminal to the communication group to which the second terminal belongs. Determining the sequence of carrying the first indication information based on the group identification information of the communication group to which the second terminal belongs can ensure that the first indication information sent by different terminal groups corresponds to different sequences, thereby avoiding mutual interference.

[0166] In some embodiments, the content indicated by the first indication information may include first indication information for indicating a first state (such as an awake state or an activated state) or a second state (such as a dormant state or an inactivated state), and the second terminal may carry different indication contents through different sequences. Correspondingly, the first terminal may interpret different sequences as different indication contents. For example, if the second terminal indicates the first state through the first sequence, when the first terminal receives the first sequence, it can be determined that the second terminal instructs it to enter the first state. For another example, if the second terminal indicates the second state through the second sequence, when the first terminal receives the second sequence, it can be determined that the second terminal instructs it to enter the second state. The sequence carrying the first indication information is determined according to the content indicated by the first indication information to implement code division multiplexing, thereby improving transmission efficiency.

[0167] In some embodiments, the time slot information corresponding to the transmission resource of the first indication information may be determined based on the time slot in which the first terminal detects the first indication information. For example, the time slot information corresponding to the transmission resource of the first indication information may be the number of the time slot in which the first terminal detects the first indication information. Determining the sequence carrying the first indication information based on the time slot information corresponding to the transmission resource of the first indication information can randomize interference between sequences and reduce transmission interference.

[0168] In some embodiments, the symbol information corresponding to the transmission resource of the first indication information can be determined based on the symbol in which the first indication information is detected by the first terminal. Optionally, if the time domain resource of the first indication information includes two time domain symbols, the symbol information is determined based on the second or first time domain symbol of the two time domain symbols. That is, the symbol corresponding to the transmission resource of the first indication information can be the second time domain symbol or the first time domain symbol of the two time domain resources. The sequence carrying the first indication information is determined based on the symbol information corresponding to the transmission resource of the first indication information, which can achieve interference randomization between sequences and reduce transmission interference.

[0169] In some embodiments, the M PRBs may be the PRBs occupied by the sequence, that is, a corresponding sequence may be generated according to the frequency domain resources occupied by the sequence. For example, a corresponding sequence may be generated according to the number of subcarriers included in the frequency domain resources occupied by the sequence. For example, different sequences may be generated for different numbers of subcarriers.

[0170] In some embodiments, the number of subcarriers included in a PRB may refer to the number of subcarriers included in each PRB of the M PRBs occupied by the sequence. For example, a first sequence may be generated based on the number of subcarriers included in a PRB, and sequences mapped to different PRBs may be sequences processed based on the first sequence. For example, the first sequence is cyclically shifted and mapped to each corresponding PRB.

[0171] In some embodiments, the length of the sequence may be a predefined length, or a preconfigured length, or a length configured by the network device, or a length indicated by the second terminal, etc.

[0172] In some embodiments, the root sequence of the sequence used to carry the first indication information is related to at least one of the following information, or is determined based on at least one of the following information:

[0173] Pre-configuration parameters, parameters configured by the network device, identification information of the first terminal, identification information of the second terminal, group identification information of the communication group to which the first terminal belongs, group identification information of the communication group to which the second terminal belongs, content indicated by the first indication information, time slot information corresponding to the transmission resource of the first indication information, symbol information corresponding to the transmission resource of the first indication information, the total number of subcarriers included in M ​​PRBs, the number of subcarriers included in one PRB, and the length of the sequence.

[0174] The meaning of the above information refers to the relevant description of the above embodiment. The specific implementation of determining the root sequence according to the above information is similar to the implementation of determining the sequence according to the above information. For the sake of brevity, it is not repeated here.

[0175] In some embodiments, the cyclic shift of the sequence used to carry the first indication information is related to at least one of the following information, or is determined based on at least one of the following information:

[0176] Pre-configuration parameters, parameters configured by the network device, identification information of the first terminal, identification information of the second terminal, group identification information of the communication group to which the first terminal belongs, group identification information of the communication group to which the second terminal belongs, content indicated by the first indication information, time slot information corresponding to the transmission resource of the first indication information, symbol information corresponding to the transmission resource of the first indication information, the total number of subcarriers included in M ​​PRBs, the number of subcarriers included in one PRB, and the length of the sequence.

[0177] The meaning of the above information refers to the relevant description of the above embodiment. The specific implementation of determining the cyclic shift according to the above information is similar to the implementation of determining the sequence according to the above information. For the sake of brevity, it is not repeated here.

[0178] In some embodiments of the present application, the transmission resource of the first indication information is pre-configured, configured by a network device, or indicated by the second terminal to the first terminal, or indicated by the first terminal to the second terminal, or determined according to a preset rule, that is, the first terminal and the second terminal have the same understanding of the transmission resource of the first indication information. When the transmission resource of the first indication information is indicated by the second terminal, the second terminal indicates the transmission resource of the first indication information through SCI, MACCE, or PC5-RRC signaling; when the transmission resource of the first indication information is indicated by the first terminal, the first terminal indicates the transmission resource of the first indication information through SCI, MACCE, or PC5-RRC signaling.

[0179] In some embodiments, the second terminal can determine the transmission resources of the first indication information based on the first information. Correspondingly, the first terminal can also determine the transmission resources of the first indication information based on the first information. That is, the first terminal and the second terminal have the same understanding of the transmission resources of the first indication information.

[0180] In some embodiments, the transmission resource of the first indication information is related to the first information. For example, the transmission resource of the first indication information is determined based on the first information, where the first information includes at least one of the following:

[0181] First time domain resources;

[0182] Second time domain resources;

[0183] identification information of the second terminal;

[0184] identification information of the first terminal;

[0185] the content indicated by the first indication information;

[0186] The number of PRBs that can be used to transmit the first indication information;

[0187] The number of cyclic shift values ​​or cyclic shift pairs that can be code-division multiplexed within the same frequency domain resources.

[0188] The specific implementation of the first time domain resource, the second time domain resource, the identification information of the second terminal, the identification information of the first terminal, and the content indicated by the first indication information refers to the relevant description of the aforementioned embodiment, and for the sake of brevity, it is not repeated here. In some embodiments, the transmission resource of the first indication information may include at least one of the following:

[0189] The time domain resources of the first indication information (ie, the third time domain resources), the frequency domain resources of the first indication information (eg, the PRB where the first indication information is located), and the code domain resources of the first indication information.

[0190] In some embodiments, the time domain resource of the first indication information (i.e., the third time domain resource) can be determined based on the first time domain resource and / or the second time domain resource, or the time domain resource of the first indication information has an associated relationship with the first time domain resource and / or the second time domain resource.

[0191] In some specific embodiments, the time interval between the third time domain resource and the first time domain resource is greater than or equal to the third time interval. The third time domain resource may be located before the first time domain resource or after the first time domain resource.

[0192] For example, the third time domain resource is located before the first time domain resource, and the time interval between the third time domain resource and the first time domain resource is greater than or equal to the third time interval.

[0193] For another example, the third time domain resource is located before the first time domain resource, and the time interval between the third time domain resource and the first time domain resource is greater than or equal to the third time interval, and the third time domain resource is an available transmission resource that is closest to the first time domain resource.

[0194] For example, as shown in Figure 16, the first time domain resource is time slot n, and the third time interval is 6 time slots, then the third time domain resource is located before time slot n-6. If the available transmission resources of the first indication information before time slot n-6 include time slot n-8, time slot n-10 and time slot n-12, etc., then the available transmission resource located before time slot n-6 and closest to the first time domain resource is located in time slot n-8, that is, the third time domain resource is time slot n-8.

[0195] In other specific embodiments, the second time domain resource and the third time domain resource have an association relationship, and the first terminal can know the second time domain resource in advance. For example, the second time domain resource can be a periodic side transmission resource pre-configured or configured by the network device. The first terminal can determine the third time domain resource based on the second time domain resource in combination with the association relationship.

[0196] In some embodiments, the time interval between the third time domain resource and the second time domain resource is greater than or equal to the second time interval.

[0197] For example, the third time domain resource is located before the second time domain resource, and a time interval between the third time domain resource and the second time domain resource is greater than or equal to the second time interval.

[0198] For another example, the third time domain resource is located before the second time domain resource, and the time interval between the third time domain resource and the second time domain resource is greater than or equal to the second time interval, and the third time domain resource is an available transmission resource that is closest to the second time domain resource.

[0199] For example, as shown in Figure 17, the first time domain resource is time slot n, the second time domain resource is time slot n-4, and the second time interval is 2 time slots. The time domain resource of the first indication information is located before time slot n-6. If the available transmission resources of the first indication information before time slot n-6 include time slot n-8, time slot n-10, and time slot n-12, etc., then the available transmission resource located before time slot n-6 and closest to the second time domain resource is located in time slot n-8, that is, the time domain resource of the first indication information is time slot n-8.

[0200] In some embodiments, the content indicated by the first indication information may include the first indication information indicating a first state or a second state, and the different states correspond to different code domain resources. For example, when the first indication information is carried by a sequence, the content indicated by the first indication information corresponds to different code domain resources of the sequence, such as corresponding to different cyclic shift values. For example, when the first indication information indicates that the first terminal enters the first state, the corresponding cyclic shift value is 0; when the first indication information indicates that the first terminal enters the second state, the corresponding cyclic shift value is 6. The first terminal can determine the state indicated by the first indication information based on the cyclic shift value of the sequence carrying the first indication information.

[0201] In some embodiments, the total number of PRBs that can be used to transmit the first indication information may refer to the number of PRBs that can be used to transmit the first indication information in one symbol. For example, the number of PRBs included in the resource pool is 100, and the total number of PRBs that can be used to transmit the first indication information in the resource pool determined according to pre-configuration information (for example, available PRB information indicating the first indication information in the form of a bitmap) is 40, that is, the number of PRBs that can be used to transmit the first indication information in one symbol is 40. If the frequency domain resource size of the first indication information is 2 PRBs (i.e., M=2), the number of the first indication information that can be frequency-division multiplexed in one symbol is 20.

[0202] In some embodiments, the identification information of the second terminal and / or the identification information of the first terminal can be used to determine the transmission resource of the first indication information.

[0203] For example, a PRB set that can be used to transmit the first indication information and the number of sequences that can be code-division multiplexed in the same frequency domain are determined based on preconfiguration information. In a time slot, transmission resources that can be used to transmit the first indication information are indexed in a frequency domain-first and then code domain manner, and then index information of the transmission resources corresponding to the first indication information is determined based on the identification information of the second terminal and / or the identification information of the first terminal.

[0204] In some embodiments, the identification information of the second terminal and / or the identification information of the first terminal can be used to determine the code domain resource of the first indication information, for example, to determine the cyclic shift value of the sequence carrying the first indication information. Determining the cyclic shift value of the sequence carrying the first indication information based on the identification information of the first terminal can ensure that the first indication information sent to different terminals corresponds to different sequences, thereby avoiding mutual interference. Determining the cyclic shift value of the sequence carrying the first indication information based on the identification information of the second terminal can ensure that the first indication information sent by different terminals corresponds to different sequences, thereby avoiding mutual interference.

[0205] In some embodiments, the number of cyclic shift values ​​or cyclic shift pairs that can be code-division multiplexed in the same frequency domain resource can be used to determine the cyclic shift of the sequence for generating the first indication information, wherein a cyclic shift pair includes two cyclic shift values.

[0206] For example, when the number of cyclic shift values ​​that can be code-division multiplexed within the same frequency domain resources is 2, or when the number of cyclic shift pairs is 1, the second terminal can determine the corresponding cyclic shift value based on the content indicated by the first indication information, wherein when the first indication information indicates different states, it corresponds to different cyclic shift values. Furthermore, the sequence generated according to this pair of cyclic shift values ​​can be multiplexed on the same frequency domain resources.

[0207] For example, when the number of cyclic shift pairs that can be code-division multiplexed in the same frequency domain resources is 2, the second terminal can determine the corresponding cyclic shift pair based on the content indicated by the first indication information, wherein when the first indication information indicates different states, corresponding to different cyclic shift pairs, the sequences generated according to these two cyclic shift value pairs can be multiplexed on the same frequency domain resources.

[0208] For example, the first indication information occupies 1 (i.e., M=1) PRB, then in this 1 PRB, multiple first indication information can be supported by code division multiplexing to multiplex the same PRB, but corresponding to different cyclic shift pairs; for example, one first indication information can correspond to a cyclic shift pair, such as the cyclic shift pair {0,6}, wherein the first indication information based on the cyclic shift value of 0 represents the first state, and the first indication information based on the cyclic shift value of 6 represents the second state; the number of cyclic shift pairs through code division multiplexing can be configured to be 2, such as supporting the cyclic shift pair {0,6} and the cyclic shift pair {3,9}, and the first indication information generated by these two groups of cyclic shift pairs can multiplex the same frequency domain resources.

[0209] In some embodiments of the present application, the transmission resources of the first side channel are pre-configured, configured by a network device, or indicated by the second terminal to the first terminal, or indicated by the first terminal to the second terminal, or determined according to a preset rule, that is, the first terminal and the second terminal have the same understanding of the transmission resources of the first indication information. Specifically, when the transmission resources of the first side channel are indicated by the second terminal to the first terminal, the second terminal indicates the transmission resources of the first side channel through SCI, MACCE, or PC5-RRC signaling; when the transmission resources of the first side channel are indicated by the first terminal to the second terminal, the first terminal may indicate the transmission resources of the first side channel through SCI, MACCE, or PC5-RRC signaling.

[0210] In some embodiments, the transmission resource of the first side channel is determined based on the transmission resource of the channel, signal or sequence carrying the first indication information. For example, there is an association relationship between the transmission resource of the first side channel and the transmission resource of the channel, signal or sequence carrying the first indication information, then the second terminal can determine the transmission resource of the first side channel based on the transmission resource of the channel, signal or sequence carrying the first indication information and the association relationship, and correspondingly, the first indication information can determine the transmission resource of the first side channel based on the transmission resource detected for the first indication information combined with the association relationship. Optionally, the association relationship can be predefined, preconfigured, configured by a network device, indicated by the second terminal to the first terminal, or indicated by the first terminal to the second terminal.

[0211] In some embodiments, the transmission resource of the first side channel is related to second information. For example, the transmission resource of the first side channel is determined according to the second information, where the second information includes at least one of the following:

[0212] identification information of the first terminal;

[0213] identification information of the second terminal;

[0214] time slot information corresponding to the transmission resource of the first indication information;

[0215] Symbol information corresponding to the transmission resource of the first indication information;

[0216] First time domain resources;

[0217] Starting frequency domain position information corresponding to the transmission resource of the first indication information;

[0218] Frequency domain length information corresponding to the transmission resource of the first indication information;

[0219] the number of PRBs available for transmitting the first sidelink channel;

[0220] The number of cyclic shift values ​​or cyclic shift pairs that can be code-division multiplexed within the same frequency domain resources.

[0221] The specific implementation of each information in the second information refers to the relevant description of the aforementioned embodiment, and for the sake of brevity, it will not be repeated here.

[0222] In some embodiments, the transmission resource of the first sidelink channel may include at least one of the following:

[0223] The time domain resources of the first sidelink channel (ie, the second time domain resources), the frequency domain resources of the first sidelink channel (eg, the PRB where the first sidelink channel is located), and the code domain resources of the first sidelink channel.

[0224] In some embodiments, the transmission resource of the first sidelink channel is determined according to a first time domain resource.

[0225] For example, the second time domain resource and the first time domain resource have an association relationship, and the first terminal may determine the second time domain resource based on the first time domain resource in combination with the association relationship.

[0226] In some embodiments, the time interval between the second time domain resource and the first time domain resource is greater than or equal to the first time interval. The second time domain resource may be located before the first time domain resource, or may be located after the first time domain resource.

[0227] In a specific embodiment, the second time domain resource is located before the first time domain resource, and a time interval between the second time domain resource and the first time domain resource is greater than or equal to the first time interval.

[0228] In a specific embodiment, the second time domain resource is located before the first time domain resource, and the time interval between the second time domain resource and the first time domain resource is greater than or equal to the first time interval, and the second time domain resource is an available transmission resource closest to the first time domain resource.

[0229] For example, as shown in Figure 18, the first time domain resource is time slot n, the second time domain resource is time slot n-4, and the second time interval is 2 time slots. Then, the time domain resource of the first indication information is located before time slot n-6. If the available transmission resources of the first indication information before time slot n-6 include time slot n-8, time slot n-10, and time slot n-12, etc., then the available transmission resource located before time slot n-6 and closest to the first time domain resource is located in time slot n-4, that is, the time domain resource of the first side channel is time slot n-4.

[0230] In some embodiments, the time domain resource of the first sidelink channel (ie, the second time domain resource) is determined according to the third time domain resource.

[0231] Optionally, the third time domain resource can be determined according to time slot information corresponding to the transmission resource of the first indication information and / or symbol information corresponding to the transmission resource of the first indication information.

[0232] For example, the third time domain resource is the time slot where the first terminal detects the first indication information, or the third time domain resource is the symbol where the first terminal detects the first indication information.

[0233] In some specific embodiments, the second time domain resource and the third time domain resource have an association relationship, and the first terminal may determine the second time domain resource based on the third time domain resource in combination with the association relationship.

[0234] In some embodiments, the time interval between the third time domain resource and is greater than or equal to the second time interval.

[0235] For example, the second time domain resource follows the third time domain resource, and a time interval between the second time domain resource and the third time domain resource is greater than or equal to the second time interval.

[0236] For another example, the second time domain resource follows the third time domain resource, and the time interval between the second time domain resource and the third time domain resource is greater than or equal to the second time interval, and the second time domain resource is an available transmission resource that is closest to the third time domain resource.

[0237] In some embodiments, the frequency domain resources and / or code domain resources corresponding to the transmission resources of the first side channel may be determined based on the identification information of the first terminal and / or the identification information of the second terminal.

[0238] For example, a PRB set that can be used to transmit the first side channel is determined according to pre-configuration information, and a PRB corresponding to the transmission resource of the first side channel is determined according to the identification information of the second terminal and / or the identification information of the first terminal.

[0239] For another example, the first sidelink channel is carried by a sequence, and the identification information of the first terminal and / or the identification information of the second terminal can be used to determine a cyclic shift value of the sequence carrying the first sidelink channel. For example, different sidelink feedback information (ACK or NACK) corresponds to different cyclic shift values.

[0240] In some embodiments, the total number of PRBs available for transmitting the first side channel may refer to the number of PRBs available for transmitting the first side channel in one symbol. For example, the number of PRBs included in the resource pool is 100, and the total number of PRBs available for transmitting the first side channel in the resource pool determined based on preconfiguration information (e.g., information indicating available PRBs for the first side channel in the form of a bitmap) is 20, that is, the number of PRBs available for transmitting the first side channel in one symbol is 20. If the frequency domain resource size of the first side channel is 1 PRB, the number of the first side channels that can be frequency-division multiplexed in one symbol is 20.

[0241] In some embodiments, the starting frequency domain position information corresponding to the transmission resource of the first indication information and the starting frequency domain position corresponding to the transmission resource of the first side channel have an association relationship. The first terminal or the second terminal can determine the starting frequency domain position corresponding to the transmission resource of the first side channel based on the starting frequency domain position corresponding to the transmission resource of the first indication information and the association relationship.

[0242] For example, the association between the starting frequency domain position information corresponding to the transmission resource of the first indication information and the starting frequency domain position corresponding to the transmission resource of the first sidelink channel may include:

[0243] The starting frequency domain position information corresponding to the transmission resource of the first side channel can be determined based on the PRB index or subchannel index corresponding to the starting frequency domain position corresponding to the transmission resource of the first indication information. For example, the starting frequency domain position information corresponding to the transmission resource of the first side channel can be the PRB index or subchannel index corresponding to the starting frequency domain position corresponding to the transmission resource of the first indication information.

[0244] In some embodiments, the starting frequency domain position information corresponding to the transmission resource of the first side channel may be determined based on the starting frequency domain position and frequency domain length corresponding to the transmission resource of the first indication information. For example, the starting frequency domain position corresponding to the transmission resource of the first side channel is a position where the starting frequency domain position corresponding to the transmission resource of the first indication information is offset by the frequency domain length.

[0245] In some embodiments, the frequency domain length corresponding to the transmission resource of the first side channel can be determined based on the frequency domain length corresponding to the transmission resource of the first indication information. For example, the frequency domain length corresponding to the transmission resource of the first side channel and the frequency domain length corresponding to the transmission resource of the first indication information are associated with each other.

[0246] In some embodiments, the side feedback information may also be carried by a sequence. The design of the sequence carrying the side feedback information may refer to the design of the sequence carrying the first indication information, and will not be described here for brevity.

[0247] In some embodiments, the number of cyclic shift values ​​or cyclic shift pairs that can be code-division multiplexed in the same frequency domain resource can be used to determine the cyclic shift of the sequence generating the sidelink feedback information, where a cyclic shift pair includes two cyclic shift values.

[0248] For example, when the number of cyclic shift values ​​that can be code-division multiplexed within the same frequency domain resources is 2, or when the number of cyclic shift pairs is 1, the first terminal can determine the corresponding cyclic shift value based on the content fed back by the side feedback information, wherein when the side feedback information feeds back ACK or NACK, corresponding to different cyclic shift values, the sequence generated according to this pair of cyclic shift values ​​can be multiplexed on the same frequency domain resources.

[0249] For example, when the number of cyclic shift pairs that can be code-division multiplexed within the same frequency domain resources is 2, the first terminal can determine the corresponding cyclic shift value based on the content fed back by the side feedback information, wherein when the side feedback information feeds back ACK or NACK, corresponding to different cyclic shift pairs, the sequences generated according to these two cyclic shift value pairs can be multiplexed on the same frequency domain resources.

[0250] For example, for example, the first sidelink channel is PSFCH, which carries sidelink feedback information through a sequence. One PSFCH occupies one PRB. Then, in this one PRB, multiple PSFCHs can be supported by code division multiplexing to multiplex the same PRB, but the multiple PSFCHs correspond to different cyclic shift pairs. For example, one PSFCH can correspond to one cyclic shift pair, such as the cyclic shift pair {0,6}, where the PSFCH generated based on the cyclic shift value 0 represents ACK, and the PSFCH generated based on the cyclic shift value 6 represents NACK. Alternatively, the number of cyclic shift pairs used by code division multiplexing can be configured to be 2, such as supporting the cyclic shift pair {0,6} and the cyclic shift pair {3,9}. The PSFCHs generated by these two sets of cyclic shift pairs can multiplex the same frequency domain resources.

[0251] Embodiment 2: The first indication information is carried by SCI.

[0252] In this embodiment 2, the transmission resource of the first indication information and the transmission resource of the first side channel may be determined in a similar manner to that in embodiment 1, which will not be described in detail here for the sake of brevity.

[0253] In some embodiments, the first indication information may be carried through an information field in the SCI, such as carrying the first indication information through an existing information field, or a new information field may be added to carry the first indication information.

[0254] For example, different values ​​of the information field in the SCI are used to indicate that the first indication enters different states. For example, when the information field takes the first value, it indicates that the first terminal enters the first state (such as the awake state or the activated state); when the information field takes the second value, it indicates that the first terminal enters the second state (such as the sleep state or the inactivated state).

[0255] In some embodiments, the first indication information is carried in an SCI format. For example, SCIs in different formats may be used to indicate that the first terminal enters different states.

[0256] For example, when the SCI is in a first format, it is used to instruct the first terminal to enter a first state (such as an awake state or an active state), and when the SCI is in a second format, it is used to instruct the first terminal to enter a second state (such as a dormant state or an inactive state). The first format and the second format are different.

[0257] Optionally, the correspondence between the SCI format and the indicated state is predefined, or configured by a network device, or indicated by the second terminal, or indicated by the first terminal to the second terminal. That is, the first terminal and the second terminal have the same understanding of the SCI format and the indicated state. When the correspondence is indicated by the first terminal or the second terminal, the first terminal or the second terminal can indicate the correspondence via SCI, MACCE, or PC5-RRC signaling.

[0258] In some embodiments, the first indication information is carried by a scrambling sequence of an SCI. For example, the SCI generated based on different scrambling sequences can be used to instruct the first terminal to enter different states.

[0259] For example, when the SCI is generated using a first scrambling sequence, it is used to instruct the first terminal to enter a first state (such as an awake state or an active state), and when the SCI is generated using a second scrambling sequence, it is used to instruct the first terminal to enter a second state (such as a dormant state or an inactive state). The first scrambling sequence and the second scrambling sequence are different.

[0260] Optionally, the correspondence between the scrambling code sequence of the SCI and the indicated state is predefined, or configured by a network device, or indicated by the second terminal, or indicated by the first terminal to the second terminal. That is, the first terminal and the second terminal have the same understanding of the scrambling code sequence of the SCI and the indicated state. When the correspondence is indicated by the first terminal or the second terminal, the first terminal or the second terminal may indicate the correspondence through SCI, MACCE, or PC5-RRC signaling.

[0261] In some implementations, the information bits a0, a1, a2, a3, ..., a A-1After adding the CRC sequence p0, p1, p2, p3,..., p L-1 The resulting sequence is b0, b1, b2, b3,..., b K-1 . Among them:

[0262] b k = a k where k = 0, 1, 2,..., A - 1

[0263] b k = p k-A where k = A, A + 1, A + 2,..., A + L - 1,

[0264] where K = A + L. A represents the length of the SCI information bits, and L = 24 represents the length of the CRC sequence.

[0265] [[ID=2)4]]Use the scrambling sequence x0, x1,..., x B-1 to scramble the bit positions corresponding to the CRC sequence in b0, b1, b2, b3,..., b K-1 . Among them, if B = L, use the scrambling sequence to scramble the bit positions corresponding to the CRC sequence in b)0, b1, b2, b3,..., b K-1 ; if B < L, use the scrambling sequence to scramble the last B bit positions of the CRC sequence in b0, b1, b2, b3,..., b K-1 . Taking B = L = 24 as an example, the scrambled sequence c0, c1, c2, c3,..., c A+23 is obtained, where:

[0266] c k = b k where k = 0, 1, 2,…, A - 1

[0267] c k = (b k + x k ) mod 2 where k = A, A + 1, A + 2,..., A + 23.

[0268] Then, when carrying the first indication information through the sequence, different scrambling sequences x k can be used for scrambling to indicate different states, as shown in Table 1, using different x k ]>to indicate different states.

[0269] Table 1

[0270] In some other implementation manners, the first indication information is carried through the scrambling sequence of the SCI, and may include:

[0271] Different initial values ​​of the scrambling code sequence correspond to different states indicated by the first indication information. That is, when the first indication information enters different states, the SCI can be scrambled by scrambling code sequences with different initial values.

[0272] For example, the bit sequence of SCI after channel coding is d(0),…,d(M bit -1) needs to be scrambled, and the scrambling sequence is c(0),…,c(M bit -1), for example, scrambling according to the following formula:

[0273] Among them, the initial value c of the scrambling sequence generator is init Determined by the third value or the fourth value; when c init When the third value (eg 1) is used to determine the first indication, it indicates that the first indication enters the first state (eg awake state or active state). init When determined by the fourth value (such as 0), it indicates that the first terminal is in the second state (such as a dormant state or an inactive state).

[0274] In some embodiments, the first indication information is carried by a first-order SCI.

[0275] In this case, the S220 may include:

[0276] If the first terminal successfully detects the first-order SCI, ACK information to the second terminal; or

[0277] In the case that the first terminal fails to successfully detect the first-order SCI, NACK information is fed back to the second terminal.

[0278] For example, when the first terminal obtains the transmission resource of the first indication information, the first terminal can detect the first-order SCI on the determined transmission resource. If the first-order SCI is successfully detected, ACK is fed back; if the first-order SCI is not received or the first-order SCI decoding fails, NACK is fed back.

[0279] In some embodiments, the first indication information is carried via a second-order SCI.

[0280] In this case, the S220 may include:

[0281] When the first terminal successfully detects the second-order SCI, feeding back ACK information to the second terminal; or

[0282] When the first terminal successfully detects the first-order SCI but fails to successfully detect the second-order SCI, feeding back NACK information to the second terminal; or

[0283] In the case that the first terminal fails to successfully detect the first-order SCI, NACK information is fed back to the second terminal, or sideline feedback information is not sent.

[0284] For example, when the first terminal obtains the transmission resources of the first indication information, the first terminal can detect the first-order SCI on the determined transmission resources, and if the first-order SCI is not successfully detected, it feeds back NACK; if the first-order SCI is successfully detected but the second-order SCI is not successfully detected, it feeds back NACK, or, if the second-order SCI is successfully detected, it feeds back ACK.

[0285] For another example, when the first terminal cannot accurately obtain the transmission resource of the first indication information, if the first terminal fails to successfully detect the first-order SCI, the first terminal may not send the sidelink feedback information.

[0286] In some embodiments, if the second terminal receives the first side channel sent by the first terminal and the side feedback information in the first side channel is ACK, the second terminal can determine that the first terminal correctly receives the first indication information. Furthermore, the second terminal can decide whether to send side data to the first terminal within the time range determined by the SL-DRX duration timer (sl-drx-onDurationTimer) based on the state indicated by the first indication information. For example, if the first indication information indicates that the first terminal enters the awake state, the second terminal can send side data to the first terminal within the time range determined by the SL-DRX duration timer (sl-drx-onDurationTimer); or, if the first indication information indicates that the first terminal enters the sleep state, the second terminal does not send side data to the first terminal within the time range determined by the SL-DRX duration timer (sl-drx-onDurationTimer).

[0287] In some embodiments, if the second terminal does not receive the first sidelink channel, or receives the first sidelink channel but the sidelink feedback information in the first sidelink channel is NACK, the second terminal may determine that the first terminal has not correctly received the first indication information. The second terminal may then determine that the first terminal will not enter an awake state or an active state, or determine that the first terminal will not start the SL-DRX duration timer (sl-drx-onDurationTimer), and may decide not to send sidelink data to the first terminal within the time range determined by the SL-DRX duration timer (sl-drx-onDurationTimer).

[0288] In summary, in the embodiment of the present application, by introducing a side feedback mechanism of the wake-up signal, the transmitting terminal can be informed whether the receiving terminal has correctly received the wake-up signal and whether it has entered the wake-up state, thereby avoiding the problem that the receiving terminal does not enter the wake-up state according to the instructions of the transmitting terminal and cannot correctly receive the side data.

[0289] The above text, in combination with Figures 12 to 18, describes in detail the method embodiment of the present application. The following text, in combination with Figures 19 to 23, describes in detail the device embodiment of the present application. It should be understood that the device embodiment and the method embodiment correspond to each other, and similar descriptions can refer to the method embodiment.

[0290] FIG19 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application. As shown in FIG19 , the terminal device 400 includes:

[0291] a communication unit 410 configured to detect first indication information sent by a second terminal, the first indication information being used to instruct the terminal device to enter a target state, the target state being used to instruct the terminal device whether to start a first timer, or the target state being used to instruct the terminal device whether to receive sidelink data within a first time range; wherein the first timer is associated with a sidelink discontinuous reception duration timer, and the first time range is determined based on the first timer; and

[0292] Sending sidelink feedback information of the first indication information to the second terminal.

[0293] In some embodiments, the target state is a first state or a second state, and the first state and the second state are different discontinuous reception (DRX) states.

[0294] In some embodiments, the first state is an awake state or an active state, and the second state is a dormant state or an inactive state.

[0295] In some embodiments, the target state is used to indicate whether the terminal device starts a first timer, or the target state is used to indicate whether the terminal device receives sidelink data within a first time range, including:

[0296] If the target state is the awake state or the activated state, the terminal device starts the first timer, or the terminal device receives sidelink data within the first time range;

[0297] If the target state is a dormant state or an inactive state, the terminal device does not start the first timer, or the terminal device does not receive sidelink data within the first time range.

[0298] In some embodiments, the sidelink feedback information is carried via a first sidelink channel.

[0299] In some embodiments, the first side channel is sent in a second time domain resource, the second time domain resource is related to the first time domain resource, and the first time domain resource is determined according to the start time of the side discontinuous reception SL-DRX duration timer or the starting position of the SL-DRX cycle.

[0300] In some embodiments, the second time domain resource is before the first time domain resource, or the second time domain resource is after the first time domain resource.

[0301] In some embodiments, the time interval between the second time domain resource and the first time domain resource is greater than or equal to the first time interval.

[0302] In some embodiments, the first time interval is predefined, preconfigured, configured by a network device, determined by the terminal device, or indicated by the second terminal.

[0303] In some embodiments, the first indication information is sent in a third time domain resource, and the third time domain resource is determined based on the first time domain resource or the second time domain resource.

[0304] In some embodiments, the time interval between the third time domain resource and the second time domain resource is greater than or equal to the second time interval, or the time interval between the third time domain resource and the first time domain resource is greater than or equal to the third time interval.

[0305] In some embodiments, the second time interval is predefined, preconfigured, configured by a network device, determined by the terminal device, or indicated by the second terminal.

[0306] In some embodiments, the third time interval is predefined, preconfigured, configured by a network device, determined by the terminal device, or indicated by the second terminal.

[0307] In some embodiments, the first indication information is carried via a sequence.

[0308] In some embodiments, when the first indication information is a first sequence, the target state is a first state, or when the first indication information is a second sequence, the target state is a second state.

[0309] In some embodiments, the sequence is determined based on at least one of the following information:

[0310] Pre-configuration parameters, parameters configured by the network device, identification information of the terminal device, identification information of the second terminal, group identification information of the communication group where the terminal device is located, group identification information of the communication group where the second terminal is located, content indicated by the first indication information, time slot information corresponding to the transmission resource of the first indication information, symbol information corresponding to the transmission resource of the first indication information, the total number of subcarriers included in M ​​physical resource blocks PRBs, the number of subcarriers included in one PRB, and the length of the sequence, wherein the frequency domain resources of the sequence include M PRBs.

[0311] In some embodiments, the transmission resource of the first indication information includes 2 symbols.

[0312] In some embodiments, the two symbols include the second to last symbol and the third to last symbol available for sideline transmission in a time slot.

[0313] In some embodiments, the same data is transmitted on the two symbols.

[0314] In some embodiments, the transmission resource of the first indication information is related to first information, and the first information includes at least one of the following:

[0315] a first time domain resource, where the first time domain resource is determined according to a start time of a SL-DRX duration timer or a start position of a SL-DRX cycle;

[0316] a second time domain resource, where the second time domain resource is a time domain resource of the sidelink feedback information of the first indication information;

[0317] identification information of the second terminal;

[0318] identification information of the terminal device;

[0319] the content indicated by the first indication information;

[0320] The number of PRBs that can be used to transmit the first indication information;

[0321] The number of cyclic shift values ​​or cyclic shift pairs that can be code-division multiplexed within the same frequency domain resources.

[0322] In some embodiments, the transmission resource of the first side channel is related to second information, and the second information includes at least one of the following information:

[0323] identification information of the terminal device;

[0324] identification information of the second terminal;

[0325] time slot information corresponding to the transmission resource of the first indication information;

[0326] Symbol information corresponding to the transmission resource of the first indication information;

[0327] a first time domain resource, where the first time domain resource is determined according to a start time of a SL-DRX duration timer or a start position of a SL-DRX cycle;

[0328] Starting frequency domain position information corresponding to the transmission resource of the first indication information;

[0329] Frequency domain length information corresponding to the transmission resource of the first indication information;

[0330] The number of PRBs that can be used to transmit the first indication information;

[0331] The number of cyclic shift values ​​or cyclic shift pairs that can be code-division multiplexed within the same frequency domain resources.

[0332] In some embodiments, the first indication information is carried by sidelink control information SCI or media access control element MAC CE.

[0333] In some embodiments, the first indication information is carried through an information field in the SCI, or the first indication information is carried through a format of the SCI, or the first indication information is carried through a scrambling sequence of the SCI.

[0334] In some embodiments, the first indication information is carried by a first-order SCI.

[0335] In some embodiments, the communication unit 410 is further configured to:

[0336] In the case of successfully detecting the first-order SCI, feeding back ACK information to the second terminal; or

[0337] In the case that the first-order SCI is not successfully detected, negative acknowledgement (NACK) information is fed back to the second terminal.

[0338] In some embodiments, the first indication information is carried via a second-order SCI.

[0339] In some embodiments, the communication unit 410 is further configured to:

[0340] In the case of successfully detecting the second-order SCI, feeding back ACK information to the second terminal; or

[0341] In a case where the first-order SCI is successfully detected but the second-order SCI is not successfully detected, feeding back NACK information to the second terminal; or

[0342] In the case that the first-order SCI is not successfully detected, NACK information is fed back to the second terminal, or no sidelink feedback information is sent.

[0343] Alternatively, in some embodiments, the communication unit may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip. The processing unit may be one or more processors.

[0344] It should be understood that the terminal device 400 according to the embodiment of the present application may correspond to the first terminal in the method embodiment of the present application, and the above-mentioned and other operations and / or functions of each unit in the terminal device 400 are respectively for realizing the corresponding processes of the first terminal device in the method 200 shown in Figures 12 to 18. For the sake of brevity, they will not be repeated here.

[0345] FIG20 is a schematic block diagram of a terminal device according to another embodiment of the present application. The terminal device 500 of FIG20 includes:

[0346] a communication unit 510 configured to send first indication information to a first terminal, where the first indication information is used to instruct the first terminal to enter a target state, where the target state is used to instruct the first terminal whether to start a first timer, or where the target state is used to instruct the first terminal whether to receive sidelink data within a first time range; wherein the first timer is associated with a sidelink discontinuous reception duration timer, and the first time range is determined based on the first timer; and

[0347] Receive sideline feedback information of the first indication information sent by the first terminal.

[0348] In some embodiments, the target state is a first state or a second state, and the first state and the second state are different discontinuous reception (DRX) states.

[0349] In some embodiments, the first state is an awake state or an active state, and the second state is a dormant state or an inactive state.

[0350] In some embodiments, the target state is used to indicate whether the first terminal starts a first timer, or the target state is used to indicate whether the first terminal receives sidelink data within a first time range, including:

[0351] If the target state is the awake state or the activated state, the first terminal starts the first timer, or the first terminal receives sidelink data within the first time range;

[0352] If the target state is a dormant state or an inactive state, the first terminal does not start the first timer, or the first terminal does not receive sidelink data within the first time range.

[0353] In some embodiments, the sidelink feedback information is carried via a first sidelink channel.

[0354] In some embodiments, the first side channel is sent in a second time domain resource, the second time domain resource is related to the first time domain resource, and the first time domain resource is determined according to the start time of the side discontinuous reception SL-DRX duration timer or the starting position of the SL-DRX cycle.

[0355] In some embodiments, the second time domain resource is before the first time domain resource, or the second time domain resource is after the first time domain resource.

[0356] In some embodiments, the time interval between the second time domain resource and the first time domain resource is greater than or equal to the first time interval.

[0357] In some embodiments, the first time interval is predefined, preconfigured, configured by a network device, determined by the first terminal, or indicated by the terminal device.

[0358] In some embodiments, the first indication information is sent in a third time domain resource, and the third time domain resource is determined based on the first time domain resource or the second time domain resource.

[0359] In some embodiments, the time interval between the third time domain resource and the second time domain resource is greater than or equal to the second time interval, or the time interval between the third time domain resource and the first time domain resource is greater than or equal to the third time interval.

[0360] In some embodiments, the second time interval is predefined, preconfigured, configured by a network device, determined by the first terminal, or indicated by the terminal device.

[0361] In some embodiments, the third time interval is predefined, preconfigured, configured by a network device, determined by the first terminal, or indicated by the terminal device.

[0362] In some embodiments, the first indication information is carried via a sequence.

[0363] In some embodiments, when the first indication information is a first sequence, the target state is a first state, or when the first indication information is a second sequence, the target state is a second state.

[0364] In some embodiments, the sequence is determined based on at least one of the following information:

[0365] Pre-configuration parameters, parameters configured by the network device, identification information of the first terminal, identification information of the terminal device, group identification information of the communication group where the first terminal is located, group identification information of the communication group where the terminal device is located, content indicated by the first indication information, time slot information corresponding to the transmission resource of the first indication information, symbol information corresponding to the transmission resource of the first indication information, the total number of subcarriers included in M ​​physical resource blocks PRBs, the number of subcarriers included in one PRB, and the length of the sequence, wherein the frequency domain resources of the sequence include M PRBs.

[0366] In some embodiments, the transmission resource of the first indication information includes 2 symbols.

[0367] In some embodiments, the two symbols include the second to last symbol and the third to last symbol available for sideline transmission in a time slot.

[0368] In some embodiments, the same data is transmitted on the two symbols.

[0369] In some embodiments, the transmission resource of the first indication information is related to first information, and the first information includes at least one of the following information:

[0370] a first time domain resource, where the first time domain resource is determined according to a start time of a SL-DRX duration timer or a start position of a SL-DRX cycle;

[0371] a second time domain resource, where the second time domain resource is a time domain resource of the sidelink feedback information of the first indication information;

[0372] identification information of the terminal device;

[0373] identification information of the first terminal;

[0374] the content indicated by the first indication information;

[0375] The number of PRBs that can be used to transmit the first indication information;

[0376] The number of cyclic shift values ​​or cyclic shift pairs that can be code-division multiplexed within the same frequency domain resources.

[0377] In some embodiments, the transmission resource of the first side channel is related to second information, and the second information includes at least one of the following information:

[0378] identification information of the first terminal;

[0379] identification information of the terminal device;

[0380] time slot information corresponding to the transmission resource of the first indication information;

[0381] Symbol information corresponding to the transmission resource of the first indication information;

[0382] a first time domain resource, where the first time domain resource is determined according to a start time of a SL-DRX duration timer or a start position of a SL-DRX cycle;

[0383] Starting frequency domain position information corresponding to the transmission resource of the first indication information;

[0384] Frequency domain length information corresponding to the transmission resource of the first indication information;

[0385] The number of PRBs that can be used to transmit the first indication information;

[0386] The number of cyclic shift values ​​or cyclic shift pairs that can be code-division multiplexed within the same frequency domain resources.

[0387] In some embodiments, the first indication information is carried by sidelink control information SCI or media access control element MAC CE.

[0388] In some embodiments, the first indication information is carried through an information field in the SCI, or the first indication information is carried through a format of the SCI, or the first indication information is carried through a scrambling sequence of the SCI.

[0389] In some embodiments, the first indication information is carried by a first-order SCI.

[0390] In some embodiments, the first indication information is carried via a second-order SCI.

[0391] Alternatively, in some embodiments, the communication unit may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip. The processing unit may be one or more processors.

[0392] It should be understood that the terminal device 500 according to the embodiment of the present application may correspond to the second terminal in the embodiment of the method of the present application, and the above-mentioned and other operations and / or functions of each unit in the terminal device 500 are respectively for realizing the corresponding processes of the second terminal in the method 200 shown in Figures 12 to 18. For the sake of brevity, they will not be repeated here.

[0393] Figure 21 is a schematic structural diagram of a communication device 600 provided in an embodiment of the present application. The communication device 600 shown in Figure 21 includes a processor 610, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0394] Optionally, as shown in FIG21 , the communication device 600 may further include a memory 620. The processor 610 may call and execute a computer program from the memory 620 to implement the method in the embodiment of the present application.

[0395] The memory 620 may be a separate device independent of the processor 610 , or may be integrated into the processor 610 .

[0396] Optionally, as shown in FIG21 , the communication device 600 may further include a transceiver 630 , and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices.

[0397] The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include an antenna, and the number of antennas may be one or more.

[0398] Optionally, the communication device 600 may specifically be the first terminal of the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the first terminal in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0399] Optionally, the communication device 600 may specifically be the second terminal of the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the second terminal in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0400] Figure 22 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 700 shown in Figure 22 includes a processor 710, which can call and run a computer program from a memory to implement the method according to the embodiment of the present application.

[0401] Optionally, as shown in FIG22 , the chip 700 may further include a memory 720 , wherein the processor 710 may call and execute a computer program from the memory 720 to implement the method in the embodiment of the present application.

[0402] The memory 720 may be a separate device independent of the processor 710 , or may be integrated into the processor 710 .

[0403] Optionally, the chip 700 may further include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0404] Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0405] Optionally, the chip can be applied to the first terminal in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the first terminal in each method of the embodiment of the present application. For the sake of brevity, it will not be repeated here.

[0406] Optionally, the chip can be applied to the second terminal in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the second terminal in each method of the embodiment of the present application. For the sake of brevity, it will not be repeated here.

[0407] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0408] FIG23 is a schematic block diagram of a communication system 900 provided in an embodiment of the present application. As shown in FIG23 , the communication system 900 includes a first terminal 910 and a second terminal 920 .

[0409] Among them, the first terminal 910 can be used to implement the corresponding functions implemented by the first terminal in the above method, and the second terminal 920 can be used to implement the corresponding functions implemented by the second terminal in the above method. For the sake of brevity, they are not repeated here.

[0410] It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment can be completed by hardware integrated logic circuits in the processor or software instructions. The above processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0411] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0412] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0413] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0414] Optionally, the computer-readable storage medium can be applied to the first terminal in the embodiment of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the first terminal in the various methods of the embodiment of the present application. For the sake of brevity, they are not repeated here.

[0415] Optionally, the computer-readable storage medium can be applied to the second terminal in the embodiment of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the second terminal in the various methods of the embodiment of the present application. For the sake of brevity, they are not repeated here.

[0416] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0417] Optionally, the computer program product can be applied to the first terminal in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the first terminal in the various methods of the embodiment of the present application. For the sake of brevity, they are not repeated here.

[0418] Optionally, the computer program product can be applied to the second terminal in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the second terminal in the various methods of the embodiment of the present application. For the sake of brevity, they are not repeated here.

[0419] The embodiment of the present application also provides a computer program.

[0420] Optionally, the computer program can be applied to the first terminal in the embodiment of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the first terminal in the various methods of the embodiment of the present application. For the sake of brevity, they are not repeated here.

[0421] Optionally, the computer program can be applied to the second terminal in the embodiment of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the second terminal in the various methods of the embodiment of the present application. For the sake of brevity, they are not repeated here.

[0422] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0423] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0424] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0425] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0426] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0427] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0428] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A wireless communication method, characterized in that: include: The first terminal detects first indication information sent by the second terminal, where the first indication information is used to instruct the first terminal to enter a target state; The target state is used to indicate whether the first terminal starts a first timer, or the target state is used to indicate whether the first terminal receives sideline data within a first time range; wherein the first timer is related to a sideline discontinuous reception duration timer, and the first time range is determined based on the first timer; The first terminal sends side feedback information of the first indication information to the second terminal.

2. The method according to claim 1, characterized in that The target state is a first state or a second state, and the first state and the second state are different discontinuous reception (DRX) states.

3. The method according to claim 2, characterized in that The first state is an awake state or an active state, and the second state is a sleep state or an inactive state.

4. The method according to any one of claims 1 to 3, characterized in that The target state is used to indicate whether the first terminal starts a first timer, or the target state is used to indicate whether the first terminal receives sidelink data within a first time range, including: If the target state is an awake state or an activated state, the first terminal starts the first timer, or the first terminal receives sidelink data within the first time range; If the target state is a dormant state or an inactive state, the first terminal does not start the first timer, or the first terminal does not receive sidelink data within the first time range.

5. The method according to any one of claims 1 to 4, characterized in that The sidelink feedback information is carried via a first sidelink channel.

6. The method according to claim 5, characterized in that The first sidelink channel is sent in a second time domain resource, the second time domain resource is related to the first time domain resource, and the first time domain resource is determined according to the start time of the sidelink discontinuous reception SL-DRX duration timer or the starting position of the SL-DRX cycle.

7. The method according to claim 6, characterized in that The second time domain resource is before the first time domain resource, or the second time domain resource is after the first time domain resource.

8. The method according to claim 6 or 7, characterized in that: The time interval between the second time domain resource and the first time domain resource is greater than or equal to the first time interval.

9. The method according to claim 8, characterized in that The first time interval is predefined, preconfigured, configured by a network device, determined by the first terminal, or indicated by the second terminal.

10. The method according to any one of claims 6 to 9, characterized in that: The first indication information is sent in a third time domain resource, and the third time domain resource is determined based on the first time domain resource or the second time domain resource.

11. The method according to claim 10, characterized in that The time interval between the third time domain resource and the second time domain resource is greater than or equal to the second time interval, or the time interval between the third time domain resource and the first time domain resource is greater than or equal to the third time interval.

12. The method according to claim 11, characterized in that The second time interval is predefined, preconfigured, configured by a network device, determined by the first terminal, or indicated by the second terminal.

13. The method according to claim 11 or 12, characterized in that: The third time interval is predefined, preconfigured, configured by a network device, determined by the first terminal, or indicated by the second terminal.

14. The method according to any one of claims 1 to 13, characterized in that The first indication information is carried by a sequence.

15. The method according to claim 14, characterized in that When the first indication information is a first sequence, the target state is a first state; or, when the first indication information is a second sequence, the target state is a second state.

16. The method according to claim 14 or 15, characterized in that The sequence is determined based on at least one of the following information: Pre-configuration parameters, parameters configured by the network device, identification information of the first terminal, identification information of the second terminal, group identification information of the communication group to which the first terminal belongs, group identification information of the communication group to which the second terminal belongs, content indicated by the first indication information, time slot information corresponding to the transmission resource of the first indication information, symbol information corresponding to the transmission resource of the first indication information, the total number of subcarriers included in M ​​physical resource blocks PRBs, the number of subcarriers included in one PRB, and the length of the sequence, wherein the frequency domain resources of the sequence include M PRBs.

17. The method according to any one of claims 14 to 16, characterized in that The transmission resource of the first indication information includes 2 symbols.

18. The method according to claim 17, characterized in that The two symbols include the second to last symbol and the third to last symbol in the time slot that can be used for sideline transmission.

19. The method according to claim 17 or 18, characterized in that The same data is transmitted on the two symbols.

20. The method according to any one of claims 1 to 19, characterized in that The transmission resource of the first indication information is related to first information, and the first information includes at least one of the following: a first time domain resource, where the first time domain resource is determined according to a start time of a SL-DRX duration timer or a start position of a SL-DRX cycle; a second time domain resource, where the second time domain resource is a time domain resource of the sideline feedback information of the first indication information; identification information of the second terminal; identification information of the first terminal; content indicated by the first indication information; The number of PRBs that can be used to transmit the first indication information; The number of cyclic shift values ​​or cyclic shift pairs that can be code-division multiplexed within the same frequency domain resource.

21. The method according to any one of claims 1 to 20, characterized in that The sideway feedback information of the first indication information is carried through a first sideway channel, and a transmission resource of the first sideway channel is related to second information, and the second information includes at least one of the following information: identification information of the first terminal; identification information of the second terminal; time slot information corresponding to the transmission resource of the first indication information; Symbol information corresponding to the transmission resource of the first indication information; a first time domain resource, where the first time domain resource is determined according to a start time of a SL-DRX duration timer or a start position of a SL-DRX cycle; Starting frequency domain position information corresponding to the transmission resource of the first indication information; Frequency domain length information corresponding to the transmission resource of the first indication information; The number of PRBs that can be used to transmit the first indication information; The number of cyclic shift values ​​or cyclic shift pairs that can be code-division multiplexed within the same frequency domain resources.

22. The method according to any one of claims 1 to 13, characterized in that The first indication information is carried by sidelink control information SCI or media access control element MAC CE.

23. The method according to claim 22, characterized in that The first indication information is carried through an information field in the SCI, or the first indication information is carried through a format of the SCI, or the first indication information is carried through a scrambling code sequence of the SCI.

24. The method according to claim 22 or 23, characterized in that The first indication information is carried by the first-order SCI.

25. The method according to claim 24, characterized in that The first terminal sending sideline feedback information of the first indication information to the second terminal includes: In case of successfully detecting the first-order SCI, feeding back confirmation ACK information to the second terminal; or In the case where the first-order SCI is not successfully detected, negative acknowledgement NACK information is fed back to the second terminal.

26. The method according to claim 22 or 23, characterized in that The first indication information is carried by the second-order SCI.

27. The method according to claim 26, characterized in that The first terminal sending sideline feedback information of the first indication information to the second terminal includes: When the first terminal successfully detects the second-order SCI, feeding back ACK information to the second terminal; or When the first terminal successfully detects the first-order SCI but fails to successfully detect the second-order SCI, feeding back NACK information to the second terminal; or In the case that the first terminal fails to successfully detect the first-order SCI, NACK information is fed back to the second terminal, or sideline feedback information is not sent.

28. A wireless communication method, characterized in that: include: The second terminal sends first indication information to the first terminal, where the first indication information is used to indicate that the first terminal enters a target state, where the target state is used to indicate whether the first terminal starts a first timer, or the target state is used to indicate whether the first terminal receives sidewalk data within a first time range; wherein the first timer is related to a sidewalk discontinuous reception duration timer, and the first time range is determined based on the first timer; The second terminal receives sideline feedback information of the first indication information sent by the first terminal.

29. The method according to claim 28, characterized in that The target state is a first state or a second state, and the first state and the second state are different discontinuous reception (DRX) states.

30. The method according to claim 29, characterized in that The first state is an awake state or an active state, and the second state is a sleep state or an inactive state.

31. The method according to claim 30, characterized in that The target state is used to indicate whether the first terminal starts a first timer, or the target state is used to indicate whether the first terminal receives sidelink data within a first time range, including: If the target state is an awake state or an activated state, the first terminal starts the first timer, or the first terminal receives sidelink data within the first time range; If the target state is a dormant state or an inactive state, the first terminal does not start the first timer, or the first terminal does not receive sidelink data within the first time range.

32. The method according to any one of claims 28 to 31, characterized in that The sidelink feedback information is carried via a first sidelink channel.

33. The method according to claim 32, characterized in that The first sidelink channel is sent in a second time domain resource, the second time domain resource is related to the first time domain resource, and the first time domain resource is determined according to the start time of the sidelink discontinuous reception SL-DRX duration timer or the starting position of the SL-DRX cycle.

34. The method according to claim 33, characterized in that The second time domain resource is before the first time domain resource, or the second time domain resource is after the first time domain resource.

35. The method according to claim 33 or 34, characterized in that The time interval between the second time domain resource and the first time domain resource is greater than or equal to the first time interval.

36. The method according to claim 35, characterized in that The first time interval is predefined, preconfigured, configured by a network device, determined by the first terminal, or indicated by the second terminal.

37. The method according to any one of claims 33 to 36, characterized in that The first indication information is sent in a third time domain resource, and the third time domain resource is determined based on the first time domain resource or the second time domain resource.

38. The method according to claim 37, characterized in that The time interval between the third time domain resource and the second time domain resource is greater than or equal to the second time interval, or the time interval between the third time domain resource and the first time domain resource is greater than or equal to the third time interval.

39. The method according to claim 38, characterized in that The second time interval is predefined, preconfigured, configured by a network device, determined by the first terminal, or indicated by the second terminal.

40. The method according to claim 38 or 39, characterized in that The third time interval is predefined, preconfigured, configured by a network device, determined by the first terminal, or indicated by the second terminal.

41. The method according to any one of claims 28 to 40, characterized in that The first indication information is carried by a sequence.

42. The method according to claim 41, characterized in that When the first indication information is a first sequence, the target state is a first state; or, when the first indication information is a second sequence, the target state is a second state.

43. The method according to claim 41 or 42, characterized in that The sequence is determined based on at least one of the following information: Pre-configuration parameters, parameters configured by the network device, identification information of the first terminal, identification information of the second terminal, group identification information of the communication group to which the first terminal belongs, group identification information of the communication group to which the second terminal belongs, content indicated by the first indication information, time slot information corresponding to the transmission resource of the first indication information, symbol information corresponding to the transmission resource of the first indication information, the total number of subcarriers included in M ​​physical resource blocks PRBs, the number of subcarriers included in one PRB, and the length of the sequence, wherein the frequency domain resources of the sequence include M PRBs.

44. The method according to any one of claims 41 to 43, characterized in that The transmission resource of the first indication information includes 2 symbols.

45. The method according to claim 44, characterized in that The two symbols include the second to last symbol and the third to last symbol in the time slot that can be used for sideline transmission.

46. ​​The method according to claim 44 or 45, characterized in that The same data is transmitted on the two symbols.

47. The method according to any one of claims 28 to 46, characterized in that The transmission resource of the first indication information is related to the first information, and the first information includes at least one of the following information: a first time domain resource, wherein the first time domain resource is determined according to a start time of a SL-DRX duration timer or a start position of a SL-DRX cycle; a second time domain resource, where the second time domain resource is a time domain resource of the sideline feedback information of the first indication information; identification information of the second terminal; identification information of the first terminal; content indicated by the first indication information; The number of PRBs that can be used to transmit the first indication information; The number of cyclic shift values ​​or cyclic shift pairs that can be code-division multiplexed within the same frequency domain resources.

48. The method according to any one of claims 28 to 47, characterized in that The sideway feedback information of the first indication information is carried through a first sideway channel, and a transmission resource of the first sideway channel is related to second information, and the second information includes at least one of the following information: identification information of the first terminal; identification information of the second terminal; time slot information corresponding to the transmission resource of the first indication information; Symbol information corresponding to the transmission resource of the first indication information; a first time domain resource, wherein the first time domain resource is determined according to a start time of a SL-DRX duration timer or a start position of a SL-DRX cycle; Starting frequency domain position information corresponding to the transmission resource of the first indication information; Frequency domain length information corresponding to the transmission resource of the first indication information; The number of PRBs that can be used to transmit the first indication information; The number of cyclic shift values ​​or cyclic shift pairs that can be code-division multiplexed within the same frequency domain resources.

49. The method according to any one of claims 28 to 40, characterized in that The first indication information is carried by sidelink control information SCI or media access control element MAC CE.

50. The method according to claim 49, characterized in that The first indication information is carried through an information field in the SCI, or the first indication information is carried through a format of the SCI, or the first indication information is carried through a scrambling code sequence of the SCI.

51. The method according to claim 49 or 50, characterized in that The first indication information is carried by the first-order SCI.

52. The method according to claim 49 or 50, characterized in that The first indication information is carried by the second-order SCI.

53. A terminal device, characterized in that: include: a communication unit, configured to detect first indication information sent by a second terminal, wherein the first indication information is used to indicate that the terminal device enters a target state, wherein the target state is used to indicate whether the terminal device starts a first timer, or the target state is used to indicate whether the terminal device receives sideline data within a first time range; wherein the first timer is related to a sideline discontinuous reception duration timer, and the first time range is determined based on the first timer; and Sending side feedback information of the first indication information to the second terminal.

54. A terminal device, characterized in that: include: a communication unit, configured to send first indication information to a first terminal, wherein the first indication information is used to indicate that the first terminal enters a target state, wherein the target state is used to indicate whether the first terminal starts a first timer, or the target state is used to indicate whether the first terminal receives sidelink data within a first time range; wherein the first timer is related to a sidelink discontinuous reception duration timer, and the first time range is determined based on the first timer; and Receive side feedback information of the first indication information sent by the first terminal.

55. A terminal device, characterized in that: include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method as claimed in any one of claims 1 to 27, or the method as claimed in any one of claims 28 to 52.

56. A chip, characterized in that: include: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 27, or a method as claimed in any one of claims 28 to 52.

57. A computer-readable storage medium, characterized in that Used to store a computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 27, or the method according to any one of claims 28 to 52.

58. A computer program product, characterized in that The method comprises computer program instructions which cause a computer to execute the method as claimed in any one of claims 1 to 27 or the method as claimed in any one of claims 28 to 52.

59. A computer program, characterized in that The computer program enables a computer to execute the method according to any one of claims 1 to 27 or the method according to any one of claims 28 to 52.

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