Bylink transmission method and device, terminal and readable storage medium

Abstract

The invention discloses a side link transmission method and device, a terminal and a readable storage medium, and belongs to the technical field of wireless communication, and the side link transmission method comprises the steps that a first terminal determines a channel occupancy time (COT) sharing part which can be shared to a second terminal, resources selected or reserved by the second terminal are all located in the COT sharing part, or resources meeting a first condition exist in the resources selected or reserved by the second terminal; and if resources meeting a first condition exist in the resources selected or reserved by the second terminal, the first terminal executes a first operation and determines that the COT sharing part can be shared by the second terminal.

Description

Technical Field

[0001] The present application belongs to the field of wireless communication technology, and specifically relates to a sidelink transmission method, device, terminal and readable storage medium. Background Art

[0002] If the sidelink (SL) system is deployed in an unlicensed frequency band, the user equipment (UE, also known as the terminal) can obtain the channel occupancy time (COT) by listening before talking (LBT) and share it with other UEs. However, at the same time, the UEs sharing the COT may have already selected and reserved resources. If some of the selected and reserved resources are outside the shared part of the COT, the UEs sharing the COT may abandon transmission or not have time to reselect resources, thereby failing to effectively utilize the COT. Summary of the invention

[0003] The embodiments of the present application provide a sidelink transmission method, device, terminal and readable storage medium, which can solve the problem that a UE sharing a COT in a sidelink system cannot effectively utilize COT transmission.

[0004] In a first aspect, a sidelink transmission method is provided, the method comprising:

[0005] The first terminal determines a channel occupation time COT shared part that can be shared with the second terminal, and all resources selected or reserved by the second terminal are located in the COT shared part, or there are resources that meet the first condition among the resources selected or reserved by the second terminal;

[0006] If there is a resource satisfying the first condition among the resources selected or reserved by the second terminal, the first terminal performs a first operation to determine that the COT shared portion can be shared by the second terminal;

[0007] The resources that meet the first condition include at least one of the following:

[0008] Resources located in the first place;

[0009] resources that at least partially overlap with resources selected or reserved by the first terminal;

[0010] Resources located before the shared portion of the COT;

[0011] Resources located after the shared portion of the COT;

[0012] Resources not located within the shared portion of the COT;

[0013] Resources whose time interval from the first moment is less than or equal to the first duration;

[0014] A resource located in the COT shared portion and having a time interval with a start point of the COT shared portion greater than or equal to a second duration;

[0015] Resources whose time interval with the start point of the COT or the start point of the shared part of the COT or the end point of the shared part of the COT is less than or equal to a preset threshold;

[0016] The first time is one of the following, or the sum of one of the following and the second duration:

[0017] the starting point of the COT;

[0018] The moment when the COT shares information;

[0019] The time when the second terminal obtains the COT shared information;

[0020] The moment when the second terminal finishes decoding the COT shared information;

[0021] The end of the first time;

[0022] The starting point of the shared portion of the COT;

[0023] The first duration includes the sum of one or more of the following:

[0024] The length of time required for channel or signal processing;

[0025] The time required for decoding;

[0026] The length of time required to select or reselect resources;

[0027] Preparation time;

[0028] Processing time;

[0029] The time required to generate the data packet;

[0030] Physical side link control channel PSCCH coding time;

[0031] Physical side link shared channel PSSCH coding time;

[0032] The time required to generate or encode the SCI;

[0033] The time required to listen first and then send LBT;

[0034] Preset duration;

[0035] The time required to extend the cyclic prefix CPE;

[0036] The second duration includes the sum of one or more of the following: the duration required for signal processing, the duration required for decoding, the preset duration, the duration required for LBT, and the duration required for CPE;

[0037] The first time is the time when the first terminal sends, or the time when the resources are reserved or selected by the first terminal.

[0038] In a second aspect, a sidelink transmission method is provided, the method comprising:

[0039] The second terminal obtains a COT shared portion that can be shared by the first terminal with the second terminal, and all resources selected or reserved by the second terminal are located in the COT shared portion, or resources selected or reserved by the second terminal include resources that meet the first condition;

[0040] If there is a resource satisfying the first condition among the resources selected or reserved by the second terminal, the second terminal performs a fourth operation to determine that the COT shared portion can be shared by the second terminal;

[0041] The resources that meet the first condition include at least one of the following:

[0042] Resources located in the first place;

[0043] resources that at least partially overlap with resources selected or reserved by the first terminal;

[0044] Resources located before the shared portion of the COT;

[0045] Resources located after the shared portion of the COT;

[0046] Resources not located within the shared portion of the COT;

[0047] Resources whose time interval from the first moment is less than or equal to the first duration;

[0048] A resource located in the COT shared portion and having a time interval with a start point of the COT shared portion greater than or equal to a second duration;

[0049] Resources whose time interval with the start point of the COT or the start point of the shared part of the COT or the end point of the shared part of the COT is less than or equal to a preset threshold;

[0050] The first time is one of the following, or the sum of one of the following and the second duration:

[0051] the starting point of the COT;

[0052] The moment when the COT shares information;

[0053] The time when the second terminal obtains the COT shared information;

[0054] The moment when the second terminal finishes decoding the COT shared information;

[0055] The end of the first time;

[0056] The starting point of the shared portion of the COT;

[0057] The first duration includes the sum of one or more of the following:

[0058] The length of time required for channel or signal processing;

[0059] The time required for decoding;

[0060] The length of time required to select or reselect resources;

[0061] Preparation time;

[0062] Processing time;

[0063] The time required to generate the data packet;

[0064] PSCCH coding time;

[0065] PSSCH coding time;

[0066] The time required to generate or encode the SCI;

[0067] The duration of LBT;

[0068] Preset duration;

[0069] The length of time required for CPE;

[0070] The second duration includes the sum of one or more of the following: the duration required for signal processing, the duration required for decoding, the preset duration, the duration required for LBT, and the duration required for CPE;

[0071] The first time is the time when the first terminal sends, or the time when the resources are reserved or selected by the first terminal.

[0072] In a third aspect, a sidelink transmission device is provided, including:

[0073] A determination module, configured to determine a channel occupation time COT shared portion that can be shared with the second terminal, wherein all resources selected or reserved by the second terminal are located within the COT shared portion, or resources selected or reserved by the second terminal include resources that meet the first condition;

[0074] A first execution module, configured to execute a first operation to determine that the COT shared portion can be shared by the second terminal if there is a resource satisfying a first condition among the resources selected or reserved by the second terminal;

[0075] The resources that meet the first condition include at least one of the following:

[0076] Resources located in the first place;

[0077] resources that at least partially overlap with resources selected or reserved by the first terminal;

[0078] Resources located before the shared portion of the COT;

[0079] Resources located after the shared portion of the COT;

[0080] Resources not located within the shared portion of the COT;

[0081] Resources whose time interval from the first moment is less than or equal to the first duration;

[0082] A resource located in the COT shared portion and having a time interval with a start point of the COT shared portion greater than or equal to a second duration;

[0083] Resources whose time interval with the start point of the COT or the start point of the shared part of the COT or the end point of the shared part of the COT is less than or equal to a preset threshold;

[0084] The first time is one of the following, or the sum of one of the following and the second duration:

[0085] the starting point of the COT;

[0086] The moment when the COT shares information;

[0087] The time when the second terminal obtains the COT shared information;

[0088] The moment when the second terminal finishes decoding the COT shared information;

[0089] The end of the first time;

[0090] The starting point of the shared portion of the COT;

[0091] The first duration includes the sum of one or more of the following:

[0092] The length of time required for channel or signal processing;

[0093] The time required for decoding;

[0094] The length of time required to select or reselect resources;

[0095] Preparation time;

[0096] Processing time;

[0097] The time required to generate the data packet;

[0098] Physical side link control channel PSCCH coding time;

[0099] Physical side link shared channel PSSCH coding time;

[0100] The time required to generate or encode the SCI;

[0101] The time required to listen first and then send LBT;

[0102] Preset duration;

[0103] The time required to extend the cyclic prefix CPE;

[0104] The second duration includes the sum of one or more of the following: the duration required for signal processing, the duration required for decoding, the preset duration, the duration required for LBT, and the duration required for CPE;

[0105] The first time is the time when the first terminal sends, or the time when the resources are reserved or selected by the first terminal.

[0106] In a fourth aspect, a sidelink transmission device is provided, including:

[0107] an acquisition module, configured to acquire a COT shared portion that can be shared by the first terminal with the second terminal, wherein all resources selected or reserved by the second terminal are located within the COT shared portion, or resources selected or reserved by the second terminal include resources that meet a first condition;

[0108] A second execution module, configured to, if there is a resource satisfying the first condition among the resources selected or reserved by the second terminal, cause the second terminal to perform a fourth operation to determine that the COT shared portion can be shared by the second terminal;

[0109] The resources that meet the first condition include at least one of the following:

[0110] Resources located in the first place;

[0111] resources that at least partially overlap with resources selected or reserved by the first terminal;

[0112] Resources located before the shared portion of the COT;

[0113] Resources located after the shared portion of the COT;

[0114] Resources not located within the shared portion of the COT;

[0115] Resources whose time interval from the first moment is less than or equal to the first duration;

[0116] A resource located in the COT shared portion and having a time interval with a start point of the COT shared portion greater than or equal to a second duration;

[0117] Resources whose time interval with the start point of the COT or the start point of the shared part of the COT or the end point of the shared part of the COT is less than or equal to a preset threshold;

[0118] The first time is one of the following, or the sum of one of the following and the second duration:

[0119] the starting point of the COT;

[0120] The moment when the COT shares information;

[0121] The time when the second terminal obtains the COT shared information;

[0122] The moment when the second terminal finishes decoding the COT shared information;

[0123] The end of the first time;

[0124] The starting point of the shared portion of the COT;

[0125] The first duration includes the sum of one or more of the following:

[0126] The length of time required for channel or signal processing;

[0127] The time required for decoding;

[0128] The length of time required to select or reselect resources;

[0129] Preparation time;

[0130] Processing time;

[0131] The time required to generate the data packet;

[0132] PSCCH coding time;

[0133] PSSCH coding time;

[0134] The time required to generate or encode the SCI;

[0135] The duration of LBT;

[0136] Preset duration;

[0137] The length of time required for CPE;

[0138] The second duration includes the sum of one or more of the following: the duration required for signal processing, the duration required for decoding, the preset duration, the duration required for LBT, and the duration required for CPE;

[0139] The first time is the time when the first terminal sends, or the time when the resources are reserved or selected by the first terminal.

[0140] In a fifth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect or the second aspect are implemented.

[0141] In a sixth aspect, a terminal is provided, including a processor and a communication interface, wherein the processor is used to determine a channel occupancy time COT shared part that can be shared with a second terminal, and all resources selected or reserved by the second terminal are located in the COT shared part, or there are resources that meet a first condition among the resources selected or reserved by the second terminal; if there are resources that meet the first condition among the resources selected or reserved by the second terminal, perform a first operation to determine that the COT shared part can be shared by the second terminal;

[0142] The resources that meet the first condition include at least one of the following:

[0143] Resources located in the first place;

[0144] resources that at least partially overlap with resources selected or reserved by the first terminal;

[0145] Resources located before the shared portion of the COT;

[0146] Resources located after the shared portion of the COT;

[0147] Resources not located within the shared portion of the COT;

[0148] Resources whose time interval from the first moment is less than or equal to the first duration;

[0149] A resource located in the COT shared portion and having a time interval with a start point of the COT shared portion greater than or equal to a second duration;

[0150] Resources whose time interval with the start point of the COT or the start point of the shared part of the COT or the end point of the shared part of the COT is less than or equal to a preset threshold;

[0151] The first time is one of the following, or the sum of one of the following and the second duration:

[0152] the starting point of the COT;

[0153] The moment when the COT shares information;

[0154] The time when the second terminal obtains the COT shared information;

[0155] The moment when the second terminal finishes decoding the COT shared information;

[0156] The end of the first time;

[0157] The starting point of the shared portion of the COT;

[0158] The first duration includes the sum of one or more of the following:

[0159] The length of time required for channel or signal processing;

[0160] The time required for decoding;

[0161] The length of time required to select or reselect resources;

[0162] Preparation time;

[0163] Processing time;

[0164] The time required to generate the data packet;

[0165] Physical side link control channel PSCCH coding time;

[0166] Physical side link shared channel PSSCH coding time;

[0167] The time required to generate or encode the SCI;

[0168] The time required to listen first and then send LBT;

[0169] Preset duration;

[0170] The time required to extend the cyclic prefix CPE;

[0171] The second duration includes the sum of one or more of the following: the duration required for signal processing, the duration required for decoding, the preset duration, the duration required for LBT, and the duration required for CPE;

[0172] The first time is the time when the first terminal sends, or the time when the resources are reserved or selected by the first terminal.

[0173] In a seventh aspect, a terminal is provided, including a processor and a communication interface, wherein the processor is used to obtain a COT shared portion that can be shared by a first terminal to a second terminal, wherein all resources selected or reserved by the second terminal are located in the COT shared portion, or resources selected or reserved by the second terminal include resources that meet a first condition; if resources selected or reserved by the second terminal include resources that meet the first condition, performing a fourth operation to determine that the COT shared portion can be shared by the second terminal;

[0174] The resources that meet the first condition include at least one of the following:

[0175] Resources located in the first place;

[0176] resources that at least partially overlap with resources selected or reserved by the first terminal;

[0177] Resources located before the shared portion of the COT;

[0178] Resources located after the shared portion of the COT;

[0179] Resources not located within the shared portion of the COT;

[0180] Resources whose time interval from the first moment is less than or equal to the first duration;

[0181] A resource located in the COT shared portion and having a time interval with a start point of the COT shared portion greater than or equal to a second duration;

[0182] Resources whose time interval with the start point of the COT or the start point of the shared part of the COT or the end point of the shared part of the COT is less than or equal to a preset threshold;

[0183] The first time is one of the following, or the sum of one of the following and the second duration:

[0184] the starting point of the COT;

[0185] The moment when the COT shares information;

[0186] The time when the second terminal obtains the COT shared information;

[0187] The moment when the second terminal finishes decoding the COT shared information;

[0188] The end of the first time;

[0189] The starting point of the shared portion of the COT;

[0190] The first duration includes the sum of one or more of the following:

[0191] The length of time required for channel or signal processing;

[0192] The time required for decoding;

[0193] The length of time required to select or reselect resources;

[0194] Preparation time;

[0195] Processing time;

[0196] The time required to generate the data packet;

[0197] PSCCH coding time;

[0198] PSSCH coding time;

[0199] The time required to generate or encode the SCI;

[0200] The duration of LBT;

[0201] Preset duration;

[0202] The length of time required for CPE;

[0203] The second duration includes the sum of one or more of the following: the duration required for signal processing, the duration required for decoding, the preset duration, the duration required for LBT, and the duration required for CPE;

[0204] The first time is the time when the first terminal sends, or the time when the resources are reserved or selected by the first terminal.

[0205] In an eighth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0206] In a ninth aspect, a wireless communication system is provided, comprising: a first terminal and a second terminal, wherein the first terminal can be used to execute the steps of the method described in the first aspect, and the second terminal can be used to execute the steps of the method described in the second aspect.

[0207] In the tenth aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect, or to implement the method described in the second aspect.

[0208] In the eleventh aspect, a computer program / program product is provided, wherein the computer program / program product is stored in a storage medium, and the program / program product is executed by at least one processor to implement the steps of the method described in the first aspect or the second aspect.

[0209] In an embodiment of the present application, by determining a shared portion of the channel occupancy time COT that can be shared with the second terminal, all resources selected or reserved by the second terminal are located within the COT shared portion, or, if there are resources satisfying the first condition among the resources selected or reserved by the second terminal, the first terminal performs a first operation or the second terminal performs a fourth operation to determine that the COT shared portion can be shared by the second terminal, so that the second terminal can share the COT of the first terminal as much as possible, reducing the probability that the COT is snatched away by other terminals and causing the second terminal to be unable to use the COT, or reducing the probability that the second terminal must perform type 1 LBT to avoid BLT failure, thereby improving the utilization efficiency of the COT. BRIEF DESCRIPTION OF THE DRAWINGS

[0210] Figure 1 A block diagram of a wireless communication system applicable to the embodiments of the present application;

[0211] Figure 2 Schematic diagram of channel occupancy time sharing on the base station side in the NR-U system on the unlicensed frequency band;

[0212] Figure 3 A schematic diagram of resource indication / reservation for a sidelink;

[0213] Figure 4 One of the schematic diagrams of the occupancy time of the shared channel by the terminals;

[0214] Figure 5 The second schematic diagram is a diagram of the occupancy time of a shared channel by a terminal;

[0215] Figure 6 A schematic diagram of a flow chart of a sidelink transmission method performed by a first terminal according to an embodiment of the present application;

[0216] Figure 7 A schematic diagram of a flow chart of a sidelink transmission method performed by a second terminal according to an embodiment of the present application;

[0217] Figure 8 This is one of the schematic diagrams of the sidelink transmission method of Embodiment 1 of the present application;

[0218] Fig. 9 This is a second schematic diagram of the sidelink transmission method of Embodiment 1 of the present application;

[0219] Fig.10 Schematic diagram 3 of the sidelink transmission method of Embodiment 1 of the present application;

[0220] Fig.11 Schematic diagram 4 of the sidelink transmission method of Embodiment 1 of the present application;

[0221] Fig.12Schematic diagram 5 of the sidelink transmission method of embodiment 1 of the present application;

[0222] Fig.13 This is one of the schematic diagrams of the sidelink transmission method of Embodiment 2 of the present application;

[0223] Fig.14 This is a second schematic diagram of the sidelink transmission method of Embodiment 2 of the present application;

[0224] Fig.15 Schematic diagram 3 of the sidelink transmission method of Embodiment 2 of the present application;

[0225] Fig.16 This is one of the structural schematic diagrams of the sidelink transmission device according to an embodiment of the present application;

[0226] Fig.17 This is a second structural diagram of the sidelink transmission device according to an embodiment of the present application;

[0227] Fig.18 A result schematic diagram of a communication device according to an embodiment of the present application;

[0228] Fig.19 This is a schematic diagram of the hardware structure of the terminal according to an embodiment of the present application. DETAILED DESCRIPTION

[0229] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0230] The terms "first", "second", etc. of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of one type, and the number of objects is not limited, for example, the first object can be one or more. In addition, "or" in the present application represents at least one of the connected objects. For example, "A or B" covers three schemes, namely, Scheme 1: including A but not including B; Scheme 2: including B but not including A; Scheme 3: including both A and B. The character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0231] The term "indication" in this application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, operations to be performed, or request results in the sent indication; an indirect indication can be understood as the receiver determining the corresponding information according to the indication sent by the sender, or making a judgment and determining the operation to be performed or the request result according to the judgment result.

[0232] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the systems and radio technologies mentioned above as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following descriptions, but these technologies can also be applied to systems other than NR systems, such as the 6th generation (6 th Generation, 6G) communication system.

[0233] Figure 1A block diagram of a wireless communication system applicable to an embodiment of the present application is shown. The wireless communication system includes a terminal 11 and a network side device 12. Among them, the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (Ultra-mobile Personal Computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), an augmented reality (Augmented Reality, AR), a virtual reality (Virtual Reality, VR) device, a robot, a wearable device (Wearable Device), an aircraft (flight vehicle), a vehicle-mounted device (Vehicle User Equipment, VUE), a ship-mounted device, a pedestrian terminal (Pedestrian User Equipment, PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), a game console, a personal computer (Personal Computer, PC), a teller machine or a self-service machine and other terminal side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be referred to as a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (Wireless Local Area Network, WLAN) access point (Access Point, AS) or a wireless fidelity (Wireless Fidelity, WiFi) node, etc.Among them, the base station may be referred to as a Node B (NB), an evolved Node B (eNB), a next generation Node B (gNB), a New Radio Node B (NR Node B), an access point, a Relay Base Station (RBS), a Serving Base Station (SBS), a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a Home Node B (HNB), a Home Evolved Node B (home evolved Node B), a Transmission Reception Point (TRP) or other appropriate terms in the relevant field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0234] The following is a brief introduction to the technical contents involved in this application.

[0235] 1. Shared spectrum / unlicensed frequency bands

[0236] In future communication systems, shared spectrum such as unlicensed bands can be used as a supplement to licensed bands to help operators expand services. In order to be consistent with the deployment of New Radio (NR) and maximize NR-based unlicensed access, unlicensed bands can operate in the 5GHz, 37GHz and 60GHz bands. Since unlicensed bands are shared by multiple radio access technologies (RATs), such as WiFi, radar, Long Term Evolution Licensed-assisted Access (LTE-LAA), etc., in some countries or regions, unlicensed bands must comply with regulations when used to ensure that all devices can use the resource fairly, such as LBT, Maximum Channel Occupancy Time (MCOT) and other rules. When a transmission node needs to send information, it needs to perform LBT first and perform energy detection (ED) on the surrounding nodes. When the detected power is lower than a threshold, the channel is considered idle and the transmission node can send. Otherwise, the channel is considered busy and the transmission node cannot send. The transmission node can be a base station, UE, WiFi AP, etc. After the transmission node starts transmitting, the channel occupancy time COT cannot exceed MCOT.

[0237] LBT includes two types: frame-based equipment (Frame Based Equipment, FBF) and load-based equipment (Load Based Equipment, LBE).

[0238] FBE Operation

[0239] Based on FBE, the sending / receiving timing of the device adopts a periodic structure, and its period is a fixed frame period (FFP). FBE nodes use a channel access mechanism based on LBT to occupy the channel. The node that initiates a transmission sequence containing one or more continuous transmissions is called an initiating node (Initiating Device), and the other nodes are called responding nodes (Responding Device). FBE nodes can be initiating nodes, responding nodes, or support both node functions.

[0240] LBE Operation

[0241] For LBE, the transmitting node can start LBT at any time and can only transmit after it detects that the channel is empty. For the transmitting node, there is no fixed listening time, and it does not need to skip when it detects that the channel is busy. It can continue to listen by backing off several enhanced clear channel assessments (eCCA) until the eCCA counter is zero.

[0242] The types of LBT commonly used in New Radio in Unlicensed Spectrum (NR-U) can be divided into Type1, Type2A, Type2B and Type2C. Type1 LBT is a channel sensing mechanism based on back-off. When the transmitting node senses that the channel is busy, it backs off and continues to sense until the channel is empty. Type2C is that the sending node does not perform LBT, that is, no LBT or immediate transmission. Type2A and Type2B LBT are one-shot LBT, that is, the node performs LBT once before transmission, and transmits if the channel is empty, and does not transmit if the channel is busy. The difference is that Type2A performs LBT within 25us, which is applicable when the gap between two transmissions is greater than or equal to 25us when the COT is shared. Type2B performs LBT within 16us, which is applicable when the gap between two transmissions is equal to 16us when the COT is shared. In addition, there is Type 2 LBT, which is applicable to LAA / eLAA / FeLAA. When sharing COT, the gap between two transmissions is greater than or equal to 25us, and the base station (eNB) and UE can use Type 2 LBT. In addition, in the frequency range 2-2, the types of LBT are Type 1, Type 2 and Type 3. Type 1 is a channel listening mechanism based on fallback, Type 2 is one-shot LBT, and 5us LBT is performed within 8us, and Type 3 does not perform LBT.

[0243] 2. Channel occupancy time sharing on the base station side in the NR-U system on the unlicensed frequency band

[0244] Please refer to Figure 2When the base station initiates COT, in addition to using the resources in the COT for downlink transmission, the resources in the COT can also be shared with the UE for uplink transmission. When the resources in the COT are shared with the UE for uplink transmission, the channel access mode that the UE can use is Type 2A LBT, Type 2B LBT or Type 2C LBT. After the UE is instructed by the base station that it can share the COT of the base station, it still needs to perform Type 2LBT first, and only after success can it use the shared COT for transmission.

[0245] 3. Channel occupancy time sharing on the UE side in the NR-U system on the unlicensed band

[0246] When the UE initiates a COT using Type1 LBT, in addition to using the resources in the COT for uplink transmission, the resources in the COT can also be shared with the base station for downlink transmission. In the NR-U system, there are two situations in which the base station shares the COT initiated by the UE: one is the COT of the Physical Uplink Shared Channel (PUSCH) scheduled by the base station; the other is the COT of the PUSCH that is free of scheduling authorization.

[0247] 4. Sidelink (SL) resource indication / reservation

[0248] In the existing SL system, a sidelink control information (SCI) can indicate 1 to 3 resources (one of which is the physical sidelink shared channel (PSSCH) resource of the current slot of the SCI). These 1 to 3 resources are called non-periodic reserved resources and need to be limited to a 32-slot time window. The SCI can carry a reserved period, and these resources after an integer number of periods are periodic reserved resources.

[0249] like Figure 3 As shown, SCI indicates resource A where it is located and two non-periodic reserved resources B and C, and SCI indicates that the reserved period is P1, then the three periodic reserved resources corresponding to 1 P1 are resources 1, 2 and 3.

[0250] SL UE includes two resource allocation modes, mode 1 (mode1) and mode 2 (mode2). Mode 1 is the base station scheduling resources, and mode 2 is the UE deciding what resources to use for transmission. Resource information may come from the base station's broadcast message or pre-configured information. If the UE works within the base station range and has a Radio Resource Control (RRC) connection with the base station, it can be mode 1 or mode 2; if the UE works within the base station range but has no RRC connection with the base station, it can only work in mode 2. If the UE is outside the base station range, it can only work in mode 2 and perform SL transmission based on pre-configured information.

[0251] For mode 2, the specific working method is as follows: 1) After the resource selection is triggered, the transmitting UE (TX UE) first determines the resource selection window. The lower boundary of the resource selection window is T1 time after the resource selection is triggered, and the upper boundary of the resource selection is T2 time after the trigger, where T2 is the value selected by the UE implementation within the packet delay budget (PDB) of its transport block (TB), and T2 is no earlier than T1. 2) Before the resource selection, the UE needs to determine the candidate resource set (candidate resource set) for resource selection, and compare the reference signal received power (RSRP) measured on the resources in the resource selection window with the corresponding RSRP threshold (threshold). If the RSRP is lower than the RSRP threshold, then the resource can be included in the candidate resource set. 3) After the resource set is determined, the UE randomly selects a transmission resource from the candidate resource set. In addition, the UE can reserve transmission resources for the next transmission during this transmission.

[0252] 5. Re-evaluation / preemption check

[0253] The upper layer requires the UE to determine a subset of resources during the re-evaluation and priority check process, and the upper layer provides the sets for re-evaluation and priority check respectively. The UE can determine whether to report the re-evaluation and priority check to the upper layer through the resource selection process.

[0254] For re-evaluation, if a candidate resource set is determined through resource selection and a resource in the re-evaluation set provided by the higher layer is not in the candidate resource set, the UE reports the re-evaluation of the resource to the higher layer.

[0255] For priority check, if the candidate resource set is determined through resource selection and a resource in the priority check set provided by the higher layer is not in the candidate resource set, and the resource does not meet the RSRP perception condition, and the priority indicated by the corresponding SCI meets the requirements.

[0256] If the pre-selected resource is not in the candidate set, a re-evaluation is triggered.

[0257] Please refer to Figure 4 UE1 obtains a COT and shares the offset portion of the COT with UE2. UE2 has previously selected or reserved resources 1, 2, 3, 4, and 5. The following problems exist:

[0258] Problem 1: Resource 1 selected or reserved by UE2 conflicts with the transmission resource selected or reserved by UE1. UE1 grabs the COT for its own transmission, so UE2 is likely to be blocked by UE1 and cannot access resource 1.

[0259] Problem 2: Resources 2 and 3 are in the COT shared part shared by UE1 to UE2, but resources 2 and 3 are later than the start time of the COT shared part. If UE2 waits until the location of resources 2 and 3 before starting LBT, the COT may be snatched away by other terminals or even wifi before that, resulting in UE2 being unable to access resources 2 and 3, causing the transmission to fail.

[0260] Question 3: Resources 4 and 5 selected or reserved by UE2 are outside the COT shared part. UE2 can only access using LBT type 1 before resources 4 and 5, so the probability of successful access is lower.

[0261] like Figure 5 As shown in the figure, another situation is that although resource 1 is in the time domain of the COT shared part, it corresponds to a different frequency domain resource (RB set) from the COT shared part. That is, UE1 only obtains the COT of RB set1, but the resource selected or reserved by UE2 is located in RB set0. At this time, UE2 can only discard the transmission of resource 1, or try to access resource 1 using Type 1 LBT, so the probability of successful access is lower.

[0262] In the above description, UE2 is a mode2 UE, that is, a UE that selects its own transmission resources. Another possibility is that UE2 is a mode1 UE, and the above resources 1, 2, 3, 4, and 5 are configured by the base station for UE2. In this case, UE2 will also face the above problems.

[0263] The main protection ideas of the embodiments of the present application are:

[0264] 1. How can UE1 ensure that UE2's resources are in the COT shared part as much as possible?

[0265] 2. How does UE2 make its resources as much as possible in the COT shared part;

[0266] 3. How does UE3 understand the use of resources, where UE3 is another UE that shares the COT of UE1.

[0267] The UE in the embodiment of the present application may be a mode1 UE or a mode2 UE.

[0268] In the embodiment of the present application, it can be assumed that the behavior of UE1 has at least one of the following:

[0269] 1. (Within UE1's COT, the resources selected or reserved by UE1 conflict / overlap with the resources selected or reserved by UE2), UE1 behavior assumption 1: the resources of the conflicting / overlapping part, the candidate resources where the conflicting / overlapping part is located (for example, the slot where it is located, the interlace set where it is located, the single-slot candidate resource where it is located), at least one of the resources selected or reserved by UE1 and the resources selected or reserved by UE2 is used for UE1 transmission.

[0270] 2. (The resources selected or reserved by UE1 conflict / overlap with the resources selected or reserved by UE2 within the COT of UE1) UE1 behavior assumption 2: If the priority of the resources / transmission selected or reserved by UE1 is lower than or equal to the priority of the resources / transmission selected or reserved by UE2, or the measurement result corresponding to the resources selected or reserved by UE2 is greater than or equal to the preset threshold, then UE1 considers that the resources of the conflicting / overlapping part are actually successfully preempted by UE2; UE1 can further impose restrictions based on whether the time interval between the COT shared information and the resources selected or reserved by UE2 meets the time for UE2 to select or reselect resources or the time for UE2 to regenerate or encode SCI;

[0271] Among them, the measurement result corresponding to the resource selected or reserved by UE2 can be: the measurement result on the previous periodic resource corresponding to the resource selected or reserved by UE2. For example, if the resource selected or reserved by UE2 is located in slot n, then the measurement result is the measurement result of the resource on slot ni*P, where P is the period.

[0272] Among them, a higher priority value means a lower priority, or a higher priority value means a higher priority.

[0273] The following, in conjunction with the accompanying drawings, describes in detail the sidelink transmission method, device, terminal, and readable storage medium provided in the embodiments of the present application through some embodiments and their application scenarios.

[0274] Please refer to Figure 6 , an embodiment of the present application provides a sidelink transmission method, including:

[0275] Step 61: Determine a channel occupation time COT shared part that can be shared with the second terminal, and all resources selected or reserved by the second terminal are located in the COT shared part, or, among the resources selected or reserved by the second terminal, there are resources that meet the first condition;

[0276] Step 62: If there are resources satisfying the first condition among the resources selected or reserved by the second terminal, the first terminal performs a first operation to determine that the COT shared portion can be shared by the second terminal.

[0277] In the embodiment of the present application, the COT shared part can also be expressed as after the first terminal transmits, or after the first time.

[0278] In the embodiment of the present application, being located within the COT shared part can also be expressed as being located after the starting point of the COT shared part, or being located from the starting point of the COT shared part to the end point of the COT, or being located from the starting point of the COT shared part to the end point of the COT shared part, etc.

[0279] In an embodiment of the present application, the starting point of the COT shared part can also be expressed as at least one of the following, or the sum of at least one of the following and a second time length: the end point of the first time, or the end time point of the first time, or after the end of the first time, or the end moment of the resources of the first terminal, or the end moment of the first terminal's transmission, or after the last resource of the first terminal, or after the last transmission of the first terminal.

[0280] Optionally, determining a shared portion of the channel occupancy time COT that can be shared with the second terminal, wherein all resources selected or reserved by the second terminal are located within the COT shared portion includes: determining a shared portion of the channel occupancy time COT that can be shared with the second terminal, wherein all resources selected or reserved by the second terminal are located within the COT shared portion and the time interval between the second moment is greater than or equal to a first duration.

[0281] In an embodiment of the present application, by determining a shared portion of the channel occupancy time COT that can be shared with the second terminal, all resources selected or reserved by the second terminal are located within the COT shared portion, or, if there are resources satisfying the first condition among the resources selected or reserved by the second terminal, the first terminal performs a first operation to determine that the COT shared portion can be shared by the second terminal, so that the second terminal can share the COT of the first terminal as much as possible, reducing the probability that the COT is snatched away by other terminals and causing the second terminal to be unable to use the COT, or reducing the probability that the second terminal must perform type 1 LBT to avoid BLT failure, thereby improving the utilization efficiency of the COT.

[0282] In an embodiment of the present application, optionally, determining that the COT shared part can be shared by the second terminal can also be expressed as making the resources used by the second terminal located within the channel occupancy time COT shared part of the first terminal, or enabling the second terminal to use type 2 listen-before-send LBT access, or enabling the second terminal to share the COT of the first terminal, or enabling the second terminal to transmit within the COT shared part of the first terminal.

[0283] In the embodiment of the present application, the resources used by the second terminal may also be expressed as resources actually used by the second terminal, or resources actually selected, or resources actually reserved.

[0284] The transmission in the embodiments of the present application may include at least one of sending and receiving.

[0285] In the embodiment of the present application, optionally, the second terminal is a terminal that performs data transmission with the first terminal via a side link.

[0286] In the embodiment of the present application, the second terminal may be one or more, that is, the COT of the first terminal may be shared with one or more second terminals.

[0287] The resources that meet the first condition include at least one of the following:

[0288] Resources located in the first place;

[0289] resources that at least partially overlap with resources selected or reserved by the first terminal;

[0290] Resources located before the shared portion of the COT;

[0291] Resources located after the shared portion of the COT;

[0292] Resources not located within the shared portion of the COT;

[0293] Resources whose time interval from the first moment is less than or equal to the first duration;

[0294] A resource located in the COT shared portion and having a time interval with a start point of the COT shared portion greater than or equal to a second duration;

[0295] Resources whose time interval with the start point of the COT or the start point of the shared part of the COT or the end point of the shared part of the COT is less than or equal to a preset threshold (so that when the second terminal reserves resources outside the COT, if the interval between the reserved resources and the COT does not exceed a certain limit, it can also be considered to be transmitted within the COT by migration);

[0296] Optionally, the resource selected or reserved by the second terminal here may be the earliest or latest or any one or specific or all or at least part of the resources selected or reserved by the second terminal.

[0297] The first time is one of the following, or the sum of one of the following and the second duration:

[0298] the starting point of the COT;

[0299] The moment of the COT sharing information; in an embodiment of the present application, optionally, the moment of the COT sharing information may be the moment of sending the COT sharing information, or the moment of the resources occupied by the COT sharing information.

[0300] The moment when the second terminal obtains the COT shared information; in the embodiment of the present application, optionally, the moment when the second terminal obtains the COT shared information may be the moment when the second terminal receives the COT shared information.

[0301] At the moment when the second terminal completes decoding the COT shared information, the second terminal may need at least one of an additional decoding time or a transmission delay time compared to the moment when the COT shared information is transmitted. For example, the COT shared information is transmitted in slot i, but the second terminal completes decoding the COT shared information at the moment of slot i+x symbols or slot i+y slots;

[0302] The end point of the first time; in an embodiment of the present application, optionally, the first time is the time when the first terminal sends (or is expressed as the time when the first terminal sends in the COT of the first terminal), or the time when the resources reserved or selected by the first terminal are located (or is expressed as the time when the resources reserved or selected by the first terminal in the COT of the first terminal are located). The end point can also be called the end moment, that is, the moment when the first terminal ends sending (within the COT). This is because the first terminal will first perform continuous transmission in the time domain after obtaining the COT, and then share it with other UEs. Therefore, before the first terminal ends sending, the second terminal must continue to receive the packet from the first terminal, so that it cannot prepare for its own transmission in advance; further, the end point of the first time can be the starting point or end point of the slot / resource where the last sending resource of the first terminal is located, or the starting point of the first symbol of the last sending resource of the first terminal, or the end point of the last symbol;

[0303] The starting point of the COT shared part.

[0304] The first duration includes the sum of one or more of the following:

[0305] The length of time required for channel or signal processing;

[0306] The time required for decoding; optionally, it can also be expressed as the time required for decoding the COT shared information, or the time required for the second terminal to decode the COT shared information.

[0307] The time required for resource selection or reselection; optionally, it can also be expressed as the time required for the second terminal to select or reselect resources.

[0308] Preparation time; for example, it may be the preparation time required for at least one of Sidelink Control Information (SCI), Physical Sidelink Shared Channel (PSSCH), Physical Sidelink Control Channel (PSCCH), Protocol Data Unit (PDU), Transport Block (TB), and candidate resource set.

[0309] Processing time; the processing time may include the processing time of a channel, or the processing time of a process, etc. The processing time may include, for example, at least one of Tproc,0 and Tproc,1.

[0310] The time required to generate a data packet; optionally, it can also be expressed as the time required for the second terminal to generate a data packet.

[0311] PSCCH coding time;

[0312] PSSCH coding time;

[0313] The time required to generate or encode the SCI; optionally, it can also be expressed as the time required for the second terminal to generate or encode the SCI. Further optionally, the time required to generate or encode the SCI can include at least one of the following: the time required to generate level 1 SCI, the time required to generate level 2 SCI, and the time required to generate level 1 SCI and level 2 SCI.

[0314] The time required for LBT; optionally, it can also be expressed as the time required for LBT of the second terminal.

[0315] Preset duration; the preset duration may be 16us, 25us, or a duration greater than 25us.

[0316] The duration required for extending the cyclic prefix (CPE); optionally, it can also be expressed as the duration required for the CPE of the second terminal.

[0317] The second duration is the sum of at least one or more of the following: the duration required for signal processing, the duration required for decoding, the duration required for LBT, the preset duration, and the duration required for CPE;

[0318] Among them, Tproc,0 can be interpreted as the second column in at least one row in Table 1 Among them, μ in Table 1 SL is the subcarrier spacing (SCS) of SL.

[0319] Table 1:

[0320]

[0321] Tproc,1 can be interpreted as the second column of at least one row in Table 1 Among them, μ in Table 2 SL SCS for SL.

[0322] Table 2:

[0323]

[0324] In the embodiment of the present application, optionally, for at least one of the above-mentioned durations, the protocol may define a time requirement that all terminals must comply with, and therefore, at least one of the above-mentioned durations is also applicable to other terminals.

[0325] That is, in an embodiment of the present application, if the first terminal has already decided when the second terminal can start sharing the COT, but finds that the resources selected / reserved by the second terminal are before the COT shared part, so that there will be a resource conflict between the first terminal and the second terminal, or the first terminal is in the COT shared part but the interval between it and the starting point of the COT shared part is too large, resulting in a high probability that it will be snatched away by other terminals, then when the first terminal selects the COT sharing information to send to the second terminal, it needs to ensure that there is enough time for the second terminal to select or reselect resources, or use the target resources. In an embodiment of the present application, optionally, the first operation includes at least one of the following:

[0326] 1) Assuming that the second terminal transmits on the target resource; or, it can also be expressed as that the first operation assumes that the resource actually used, actually selected, or actually reserved by the second terminal is the target resource;

[0327] 2) receiving on the target resource; which may also be expressed as receiving the transmission of the second terminal on the target resource;

[0328] 3) not using, discarding or canceling reception of a fourth resource among the resources selected or reserved by the second terminal;

[0329] The fourth resource includes at least one of the following: a resource located within the first time, a resource at least partially overlapping with a resource selected or reserved by the first terminal, a resource located before the COT shared portion, a resource whose time interval with the first moment is less than or equal to the first duration, a resource not located within the COT shared portion, a resource after the COT, and a resource whose time interval with the third moment is greater than or equal to the second duration;

[0330] 4) instructing the second terminal to use the target resource for transmission;

[0331] 5) instructing the second terminal not to use, discard or cancel transmission on the fourth resource;

[0332] 6) determining at least one of the location information of the COT shared part and the location information of the COT shared information;

[0333] In the embodiment of the present application, the COT sharing information is sent by the first terminal to the second terminal, and is indication information used to indicate that the COT of the first terminal can be shared with the second terminal, and is usually sent by the first terminal after obtaining the COT.

[0334] The location information of the COT shared part may include at least one of the following: a starting point, a duration, and an end point.

[0335] The location information of the COT shared information may include at least one of the following: a starting point, a duration, and an end point.

[0336] In the embodiment of the present application, optionally, the target resource includes at least one of the following:

[0337] a resource obtained after adjusting the first resource;

[0338] a resource determined based on the first resource;

[0339] Resources associated with the first resource;

[0340] Resources located after a first time; optionally, the first time is a time when the first terminal sends, or a time when the resources reserved or selected by the first terminal are located.

[0341] resources located within the shared portion of the COT;

[0342] Resources located between the start point of the shared portion of the COT and the end point of the COT;

[0343] resources starting from the end of said first time or the start of said COT shared portion;

[0344] A resource determined based on the end point of the first time or the start point of the COT shared portion; for example, a time domain resource that is the same as resource 1 in frequency domain but has a time domain position at the end point of the first time or the start point of the COT shared portion.

[0345] A resource whose time interval with the end point of the first time or the shared part of the COT is less than or equal to a second time length. The second time length is the sum of at least one or more of the following: the time length required for signal processing, the time length required for decoding, the time length required for LBT, the preset time length, and the time length required for CPE. Optionally, the time interval with the shared part of the COT may be the time interval with the starting point of the shared part of the COT. For example, a time domain resource that is the same as the frequency domain position of resource 1, but the time domain position is a distance from the end point of the first time or the starting point of the shared part of the COT by the time length required for LBT or the preset time length.

[0346] In the embodiment of the present application, for the case where the first duration is the duration required to generate or encode the SCI, if the time interval between the first moment and the resource selected or reserved by the second terminal is not enough to regenerate or encode the SCI (i.e., less than the first duration), the first terminal may assume that the resource actually used / actually selected / actually reserved by the second terminal is the resource selected or reserved by the second terminal and located in the COT shared part (or, it can also be expressed as: the resource located after the starting point of the COT shared part, or the resource located between the starting point of the COT shared part and the end point of the COT). Alternatively, the first terminal receives (the transmission of the second terminal) on the resource selected or reserved by the second terminal and located in the COT shared part (or, it can also be expressed as: the resource located after the starting point of the COT shared part, or the resource located between the starting point of the COT shared part and the end point of the COT).

[0347] In an embodiment of the present application, the time required for LBT may be the time required for LBT corresponding to Type2a, Type2b or Type2c, for example, greater than or equal to 25μs, 16μs, or less than 16μs, respectively.

[0348] In the embodiment of the present application, optionally, the first resource is at least part of the resources selected or reserved by the second terminal, and the first resource includes at least one of the following:

[0349] resources selected or reserved by the second terminal and located within the first time;

[0350] Resources selected or reserved by the second terminal that at least partially overlap with resources selected or reserved by the first terminal;

[0351] The time interval between the resources selected or reserved by the second terminal and the resources selected or reserved by the first terminal is less than or equal to the required duration or preset duration of LBT;

[0352] The resources selected or reserved by the second terminal overlap with the resources selected or reserved by the first terminal in the time domain, and belong to the same RB set, interleaving set, resource pool or BWP as the resources selected or reserved by the first terminal;

[0353] The time interval between the resources selected or reserved by the second terminal and the resources selected or reserved by the first terminal is less than or equal to the required duration or preset duration of LBT, and the resources selected or reserved by the first terminal belong to the same RB set, interleaved set, resource pool or BWP;

[0354] The resources selected or reserved by the second terminal are located before the COT shared part;

[0355] resources selected or reserved by the second terminal and located within the shared portion of the COT;

[0356] The resources selected or reserved by the second terminal are located after the end point of the COT shared part;

[0357] Among the resources selected or reserved by the second terminal, the resources are located after the end point of the COT shared portion and the time interval between the resources and the end point of the COT shared portion is less than or equal to a preset threshold;

[0358] The resources selected or reserved by the second terminal are resources located after the start point of the COT shared part.

[0359] In some embodiments, optionally, the first resource includes at least one of the following:

[0360] Resources selected or reserved by the second terminal that at least partially overlap with resources selected or reserved by the first terminal, or resources whose time interval with the resources selected or reserved by the first terminal is less than or equal to the required duration or preset duration of LBT (for example, for the case of only reselection or migration or based on resource 1 in any RB set);

[0361] The resources selected or reserved by the second terminal overlap with the resources selected or reserved by the first terminal in time domain, or the time interval between the resources selected or reserved by the first terminal is less than or equal to the required duration or preset duration of LBT, and the resources selected or reserved by the first terminal belong to the same RB set, interleaved set, resource pool or BWP (for example, for the case of migrating only resource 1 in any RB set);

[0362] The resources selected or reserved by the second terminal that are located before the COT shared portion (e.g., for the case of only reselection or migration or based on resource 1);

[0363] The resources selected or reserved by the second terminal, the resources located before the COT shared portion and the resources located within the COT shared portion (e.g., for the case of only reselection or migration or based on resources 1, 2, 3);

[0364] The resources selected or reserved by the second terminal include resources before the COT shared portion, resources within the COT shared portion, and resources after the end of the COT shared portion (e.g., for reselection or migration only or based on resources 1, 2, 3, 4, 5);

[0365] The resources selected or reserved by the second terminal are resources located before the COT shared portion, resources located within the COT shared portion, and resources located after the end point of the COT shared portion and whose time interval with the end point of the COT shared portion is less than or equal to a preset threshold (for example, for the case of reselection or migration only or based on resources 1, 2, 3, 4, 5);

[0366] The resources selected or reserved by the second terminal are resources located after the start point of the COT shared part.

[0367] In the embodiment of the present application, optionally, the instructing the second terminal to use the target resource for transmission includes at least one of the following:

[0368] 1) instructing the second terminal to select or reselect resources;

[0369] Optionally, the second terminal is instructed to select or reselect resources for at least the first resource, or the second terminal is instructed to select or reselect resources for at least a process / TB / transmission associated with the first resource to obtain the target resource.

[0370] 2) instructing the second terminal to perform at least one of time domain migration and frequency domain migration on the first resource to obtain the target resource;

[0371] 3) indicating a migration amount, wherein the migration amount includes at least one of a time domain migration amount and a frequency domain migration amount;

[0372] 4) indicating the target resource;

[0373] Optionally, a target resource associated with the first resource is indicated.

[0374] 5) Indicates the association relationship between the first resource and the target resource.

[0375] In an embodiment of the present application, optionally, when there are multiple second terminals, different second terminals correspond to different target resources.

[0376] In the embodiment of the present application, optionally, the target resource is related to at least one of the following:

[0377] The geographical location or area ID of the second terminal;

[0378] a priority of transmission of the second terminal;

[0379] The ID of the second terminal.

[0380] In the embodiment of the present application, optionally, when there are multiple second terminals, different second terminals correspond to different migration amounts.

[0381] In the embodiment of the present application, optionally, the migration amounts corresponding to different second terminals are related to at least one of the following:

[0382] The geographical location or area ID of the second terminal;

[0383] a priority of transmission of the second terminal;

[0384] The ID of the second terminal.

[0385] In the embodiment of the present application, optionally, the determining of at least one of the position of the COT shared part and the position of the COT shared information includes at least one of the following (in the embodiment of the present application, for example, at least for the first moment being the moment of COT shared information, the first duration at least includes the duration required for the second terminal to generate / encode the SCI or the duration required for the second terminal to select or reselect resources, that is, after the first terminal selects the resources of the COT shared information, it is found that the interval between the COT shared information and the resources selected or reserved by the second terminal is not sufficient for the second terminal to regenerate / encode the SCI or select or reselect resources, and the following method can be used):

[0386] 1) determining a first offset (offset1) between a starting point of the COT shared part of the second terminal and a time of the COT shared information; wherein the first offset satisfies at least one of the following:

[0387] The first offset is less than or equal to the time interval between the first moment and the resource selected or reserved by the second terminal, so that the resource selected or reserved by the second terminal is located in the COT shared part;

[0388] The first offset is less than or equal to the time interval between the first moment and the resources selected or reserved by the second terminal minus at least one of the second durations, so that the resources selected or reserved by the second terminal are located in the COT shared part; wherein the second duration includes the sum of one or more of the following: the time required for signal processing, the time required for decoding, the time required for LBT, the preset time, and the time required for CPE.

[0389] Among them, optionally, the resource selected or reserved by the second terminal here may be the earliest or latest or any one or specific or all or at least part of the resources selected or reserved by the second terminal.

[0390] 2) determining a second offset (offset2) between a starting point of the COT shared portion of the second terminal and a starting point of the COT; wherein the second offset satisfies at least one of the following:

[0391] The second offset is less than or equal to a first sum value, wherein the first sum value is the sum of: a time interval between the first moment (e.g., a moment of COT sharing information) and the resource selected or reserved by the second terminal, and a time interval between the first moment and a start point of the COT, so that the resource selected or reserved by the second terminal is located in a COT shared part;

[0392] The second offset is less than or equal to a second sum value, which is the sum of the following two: the time interval between the first moment and the resources selected or reserved by the second terminal minus the second duration, and the time interval between the first moment and the starting point of the COT, so that the resources selected or reserved by the second terminal are located in the shared part of the COT.

[0393] 3) The starting point of the determined COT shared part is no earlier than the resources selected or reserved by the second terminal;

[0394] Among them, optionally, the resource selected or reserved by the second terminal here may be the earliest or latest or any one or specific or all or at least part of the resources selected or reserved by the second terminal.

[0395] The second duration includes the sum of one or more of the following: the duration required for signal processing, the duration required for decoding, the duration required for LBT, the preset duration, and the duration required for CPE.

[0396] Among them, optionally, the resource selected or reserved by the second terminal here may be the earliest or latest or any one or specific or all or at least part of the resources selected or reserved by the second terminal.

[0397] In an embodiment of the present application, optionally, the starting point of the COT shared part is the location of the resource selected or reserved by the second terminal; or, the time interval between the starting point of the COT shared part and the resource selected or reserved by the second terminal is not less than the second duration. Wherein, the second duration includes the sum of one or more of the following: the duration required for signal processing, the duration required for decoding, the duration required for LBT, the preset duration, and the duration required for CPE. Wherein, optionally, the resource selected or reserved by the second terminal here can be the earliest or latest or any one or specific or all or at least part of the resources selected or reserved by the second terminal.

[0398] In an embodiment of the present application, the first terminal can also ensure that the resources used by the second terminal are located in the COT shared part of the first terminal by reasonably selecting resources, or the second terminal can use type (type) 2 LBT access, or the second terminal can share the COT of the first terminal, or the second terminal can transmit within the COT shared part of the first terminal, as described in detail below.

[0399] In the embodiment of the present application, optionally, before the first terminal determines the COT shared part, the method further includes: selecting a resource, wherein the selected resource is earlier than or located at the second moment, or the time interval between the selected resource and the resource selected or reserved by the second terminal is greater than or equal to the first duration;

[0400] The second moment is the moment at which the resource is selected or reserved by the second terminal minus at least one of the following:

[0401] The length of time required for channel or signal processing;

[0402] The time required for decoding;

[0403] The length of time required to select or reselect resources;

[0404] Preparation time;

[0405] Processing time;

[0406] The time required to generate the data packet;

[0407] PSCCH coding time;

[0408] PSSCH coding time;

[0409] The time required to generate or encode the SCI.

[0410] In the embodiment of the present application, when the first terminal selects a resource, the COT may have been obtained or may not have been obtained.

[0411] In the embodiment of the present application, selecting resources may also be reselecting resources, and the process of reselecting resources is the same as the process of selecting resources described above.

[0412] In an embodiment of the present application, optionally, the selecting a resource includes: determining a resource selection window or a candidate resource;

[0413] In which, the resource selection window is earlier than or located at the second moment, or the time interval between the resource selection window and the resources selected or reserved by the second terminal is greater than or equal to a third duration; the principle of this scheme is that there is enough time between the time after the first terminal completes continuous sending within the COT and the time when the second terminal selects or reserves the resources, so that the second terminal has time to make resource selection or reselect / regenerate SCI.

[0414] The latest candidate resource among the candidate resources is earlier than or located at the second moment, or the time interval between the latest candidate resource among the candidate resources and the resource selected or reserved by the second terminal is greater than or equal to the first duration; the principle of this scheme is that there is enough time between the time when the first terminal completes continuous sending within the COT and the resource selected or reserved by the second terminal so that the second terminal has time to select resources or reselect / regenerate SCI.

[0415] Optionally, the resource selected or reserved by the second terminal described herein may be the earliest or latest or any one or specific or all or at least part of the resources selected or reserved by the second terminal.

[0416] In the embodiment of the present application, the resource selection window may refer to the end point of the resource selection window.

[0417] The second moment is the moment at which the resource is selected or reserved by the second terminal minus at least one of the following:

[0418] The length of time required for channel or signal processing;

[0419] Decoding required time; Optionally, the decoding required time may include: the sum of at least one or more of the SCI decoding required time, the PSSCH decoding required time and the high-layer decoding required time;

[0420] The length of time required to select or reselect resources;

[0421] Preparation time;

[0422] Tproc,0;

[0423] Tproc,1;

[0424] The time required to generate a data packet, or, expressed as the time required to regenerate a new data packet or MAC PDU;

[0425] PSCCH coding time;

[0426] PSSCH coding time;

[0427] The time required to generate or encode SCI, or, expressed as the time required to regenerate or encode SCI.

[0428] In an embodiment of the present application, optionally, the selected or reselected resource is a resource of the COT shared information. That is, when selecting or reselecting a resource of the COT shared information, the above-mentioned step of selecting a resource is performed; wherein the selected resource is earlier than or located at the second moment, or the time interval between the selected resource and the resource selected or reserved by the second terminal is greater than or equal to the first duration. The principle of this scheme is to ensure that there is enough time between the COT shared information and the resource selected or reserved by the second terminal so that the second terminal has time to select or reselect the resource.

[0429] Optionally, selecting a resource includes: determining a resource selection window or candidate resources;

[0430] The resource selection window is earlier than or located at the second moment, or the time interval between the resource selection window and the resources selected or reserved by the second terminal is greater than or equal to a third duration; the principle of this scheme is to ensure that there is enough time for the COT shared information and the resources selected or reserved by the second terminal to allow the second terminal to select or reselect resources in time.

[0431] The latest candidate resource among the candidate resources is earlier than or located at the second moment, or the time interval between the latest candidate resource among the candidate resources and the resource selected or reserved by the second terminal is greater than or equal to the first duration; the principle of this scheme is to ensure that there is enough time between the COT shared information and the resource selected or reserved by the second terminal so that the second terminal has time to select or reselect the resource.

[0432] In the embodiment of the present application, optionally, the sidelink transmission method further includes: the first terminal receives first indication information sent by the second terminal at the target resource (eg, resource 1' obtained after migration of resource 1); and performs a second operation according to the first indication information.

[0433] The first indication information is used to indicate to ignore the reserved resources of the resources currently used by the second terminal.

[0434] The first indication information includes at least one of the following:

[0435] The resource currently used by the second terminal is the target resource (for example, indicating that the resource currently used is a resource obtained after migration);

[0436] The resource currently used by the second terminal is obtained by adjusting the first resource, or is determined based on the first resource, or is associated with the first resource;

[0437] The reservation period of the resources currently used by the second terminal is 0ms;

[0438] The resources currently used by the second terminal have no reserved resources or the reserved resources are invalid;

[0439] Indicating (other terminals) that at least one of the currently used resource and the reserved resource of the currently used resource does not need to be considered in a perception process, a resource detection process, a resource selection process, a preemption process, or a re-evaluation process;

[0440] Instructing (other terminals) that during a perception process, a resource detection process, a resource selection process, a preemption process, or a re-evaluation process, there is no need to exclude resources based on at least one of the currently used resources and the reserved resources of the currently used resources; for example, reserved resources that overlap with the reserved resources of the currently used resources will not be excluded;

[0441] Indicating that at least one of the currently used resource and a reserved resource of the currently used resource is a candidate resource or an available resource;

[0442] Indicating that the reserved resource of the currently used resource is a resource in a preferred resource set; wherein the preferred resource set is a resource in the preferred resource set on which the second terminal expects other terminals to send data to the second terminal;

[0443] Indicates that the resource currently being used is disposable.

[0444] Through the above indication, the periodic reservation of the currently used resources should not affect the perception process or resource detection process or resource selection process or preemption process or re-evaluation process of other terminals.

[0445] In an embodiment of the present application, optionally, the reserved resources are periodically reserved resources.

[0446] In an embodiment of the present application, the second terminal carries the first indication information in the SCI or PSSCH of the target resource.

[0447] The second operation includes at least one of the following:

[0448] At least one of the currently used resource and the reserved resource of the currently used resource is not considered in the sensing process, the resource detection process, the resource selection process, the preemption process, or the re-evaluation process;

[0449] In a sensing process, a resource detection process, a resource selection process, a preemption process, or a re-evaluation process, resource exclusion is not performed based on at least one of the currently used resource and the reserved resource of the currently used resource;

[0450] Assuming that at least one of the currently used resource and the reserved resource of the currently used resource is a candidate resource or an available resource;

[0451] Select at least part of at least one of the currently used resources and the reserved resources of the currently used resources; for example, the periodic reserved resources of the currently used resources may be selected;

[0452] Ignore the reserved resources of the currently used resources;

[0453] Assume that the reserved resources of the currently used resources are invalid;

[0454] It is assumed that the reservation period of the reserved resources of the currently used resources is 0 ms.

[0455] In some embodiments, optionally, the first indication information indicates that the resources currently used by the second terminal have no reserved resources or the reserved resources are invalid; after receiving the first indication information, the first terminal ignores the reserved resources of the resources currently used.

[0456] In some embodiments, optionally, the first indication information indicates (other terminals) that at least one of the currently used resources and the reserved resources of the currently used resources does not need to be considered during the perception process. After the first terminal receives the first indication information, the currently used resources and at least one of the reserved resources of the currently used resources are not considered during the perception process.

[0457] Since the target resource is a resource obtained through migration or reselection, and is not an initially selected or reserved resource, the reserved resource of the target resource is also considered invalid and can be ignored by other terminals.

[0458] In the embodiment of the present application, optionally, the sidelink transmission method further includes: the first terminal receives second indication information sent by the second terminal in a second resource; the second resource is a resource after the target resource of the second terminal; the first terminal performs a third operation according to the second indication information;

[0459] Optionally, the second indication information is used to indicate to ignore reserved resources of resources before the second resource.

[0460] The second indication information includes at least one of the following:

[0461] The resource before the second resource is the target resource;

[0462] The resource before the second resource is obtained by adjusting the first resource, or is determined based on the first resource, or is associated with the first resource;

[0463] The reservation period of the resource before the second resource is 0ms;

[0464] There is no reserved resource or the reserved resource is invalid for the resource before the second resource;

[0465] Indicating that at least one of a resource before the second resource and a reserved resource of the resource before the second resource does not need to be considered during a sensing process, a resource detection process, a resource selection process, a preemption process, or a reassessment process;

[0466] Indicating that there is no need to exclude resources based on at least one of a resource before the second resource and a reserved resource of the resource before the second resource during a sensing process, a resource detection process, a resource selection process, a preemption process, or a reassessment process;

[0467] Indicate that at least one of a resource before the second resource and a reserved resource of the resource before the second resource is a candidate resource or an available resource;

[0468] The reserved resource indicating the resource before the second resource is a resource in a preferred resource set (preferred resourceset).

[0469] That is to say, the indication information of the subsequent resources reversely indicates that the reservation of the previous resources is invalid.

[0470] In an embodiment of the present application, the second terminal carries the second indication information in the SCI or PSSCH of the target resource.

[0471] The third operation includes at least one of the following:

[0472] At least one of the resource before the second resource and the reserved resource of the resource before the second resource is not considered in the sensing process or the resource detection process or the resource selection process or the preemption process or the re-evaluation process;

[0473] In a sensing process, a resource detection process, a resource selection process, a preemption process, or a re-evaluation process, resource exclusion is not performed based on at least one of a resource before the second resource and a reserved resource of the resource before the second resource;

[0474] Assuming that at least one of a resource before the second resource and a reserved resource of the resource before the second resource is a candidate resource or an available resource;

[0475] selecting at least a portion of at least one of a resource before the second resource and a reserved resource of the resource before the second resource;

[0476] Ignore reserved resources of resources before the second resource;

[0477] Assume that the reserved resources of the resources before the second resource are invalid;

[0478] Assume that the reservation period of the reserved resources before the second resource is 0 ms.

[0479] In some embodiments, optionally, the second indication information indicates that there are no reserved resources or the reserved resources are invalid for resources before the second resource; after receiving the second indication information, the first terminal ignores the reserved resources for resources before the second resource or assumes that the reserved resources for resources before the second resource are invalid.

[0480] In some embodiments, optionally, the second indication information indicates (other terminals) that it is not necessary to consider at least one of the resources before the second resource and the reserved resources before the second resource during the perception process. After the first terminal receives the second indication information, it does not consider at least one of the resources before the second resource and the reserved resources before the second resource during the perception process.

[0481] Since the target resource is a resource obtained through migration or reselection, and is not an initially selected or reserved resource, the reserved resource of the target resource is also considered invalid and can be ignored by other terminals.

[0482] Optionally, the method also includes: the first terminal receives third indication information sent by the second terminal on the target resource corresponding to the first resource, the third indication information indicates a third resource, the third resource is at least part of the resource that should have been indicated on the first resource, or the third resource is at least part of the authorized resource where the first resource is located.

[0483] In the above embodiments, optionally, the first resource includes at least one of the following:

[0484] resources selected or reserved by the second terminal and located within the first time;

[0485] Resources selected or reserved by the second terminal that at least partially overlap with resources selected or reserved by the first terminal;

[0486] The time interval between the resources selected or reserved by the second terminal and the resources selected or reserved by the first terminal is less than or equal to the required duration or preset duration of LBT;

[0487] The resources selected or reserved by the second terminal overlap with the resources selected or reserved by the first terminal in time domain, and belong to the same RB set, interleaving set, resource pool or BWP as the resources selected or reserved by the first terminal;

[0488] The time interval between the resources selected or reserved by the second terminal and the resources selected or reserved by the first terminal is less than or equal to the required duration or preset duration of LBT, and the resources selected or reserved by the first terminal belong to the same RB set, interleaved set, resource pool or BWP;

[0489] The resources selected or reserved by the second terminal are located before the COT shared part;

[0490] resources selected or reserved by the second terminal and located within the shared portion of the COT;

[0491] The resources selected or reserved by the second terminal are located after the end point of the COT shared part;

[0492] Among the resources selected or reserved by the second terminal, the resources are located after the end point of the COT shared portion and the time interval between the resources and the end point of the COT shared portion is less than or equal to a preset threshold;

[0493] The resources selected or reserved by the second terminal are resources located after the start point of the COT shared part.

[0494] In an embodiment of the present application, optionally, if there are multiple first resources, at least some of the target resources corresponding to or associated with the multiple first resources are continuous in time domain; or, the target resources corresponding to the first resources are continuous in time domain with a third resource, and the third resource is at least some of the resources selected or reserved by the second terminal that should have been indicated on the first resource, or the third resource is at least some of the authorized resources where the first resource is located, thereby avoiding resources being snatched away by other terminals.

[0495] In the embodiment of the present application, optionally, the first terminal performing the first operation includes: when a second condition is met, the first terminal performing the first operation;

[0496] The second condition includes at least one of the following:

[0497] The first terminal is configured or pre-configured or indicated to be able to or must perform the first operation;

[0498] The first terminal is capable of continuing transmission after the COT shared portion;

[0499] The first terminal has selected or reserved resources after the COT shared part;

[0500] The first terminal is capable of modifying the MCS;

[0501] The first terminal is capable of using a specific MCS or a higher MCS;

[0502] The resources selected or reserved for the first terminal are compatible with a specific MCS or a higher MCS;

[0503] The priority corresponding to the resource selected or reserved by the second terminal is higher than or equal to the first preset threshold;

[0504] The priority corresponding to the resource selected or reserved by the second terminal is lower than or equal to the second preset threshold;

[0505] The transmission corresponding to the second terminal is a specific transmission type, such as a unicast type;

[0506] The resources selected or reserved by the second terminal are used to transmit specific messages, such as for the transmission of PC5-RRC messages, for example, for the transmission of connection establishment request messages, for the transmission of connection establishment rejection messages / connection establishment messages, or for the transmission of CSI request messages / CSI report messages.

[0507] Please refer to Figure 7 , the embodiment of the present application also provides a sidelink transmission method, including:

[0508] Step 71: The second terminal obtains a COT shared portion that can be shared by the first terminal with the second terminal, and all resources selected or reserved by the second terminal are located in the COT shared portion, or resources selected or reserved by the second terminal include resources that meet the first condition;

[0509] If there is a resource satisfying the first condition among the resources selected or reserved by the second terminal, the second terminal performs a fourth operation to determine that the COT shared portion can be shared by the second terminal;

[0510] The resources that meet the first condition include at least one of the following:

[0511] Resources located in the first place;

[0512] resources that at least partially overlap with resources selected or reserved by the first terminal;

[0513] Resources located before the shared portion of the COT;

[0514] Resources located after the shared portion of the COT;

[0515] Resources not located within the shared portion of the COT;

[0516] Resources whose time interval from the first moment is less than or equal to the first duration;

[0517] A resource located in the COT shared portion and having a time interval with a start point of the COT shared portion greater than or equal to a second duration;

[0518] Resources whose time interval with the start point of the COT or the start point of the shared part of the COT or the end point of the shared part of the COT is less than or equal to a preset threshold;

[0519] The first time is one of the following, or the sum of one of the following and the second duration:

[0520] the starting point of the COT;

[0521] The moment when the COT shares information;

[0522] The time when the second terminal obtains the COT shared information;

[0523] The moment when the second terminal finishes decoding the COT shared information;

[0524] The end of the first time;

[0525] The starting point of the shared portion of the COT;

[0526] The first duration includes the sum of one or more of the following:

[0527] The length of time required for channel or signal processing;

[0528] The time required for decoding;

[0529] The length of time required to select or reselect resources;

[0530] Preparation time;

[0531] Processing time;

[0532] The time required to generate the data packet;

[0533] PSCCH coding time;

[0534] PSSCH coding time;

[0535] The time required to generate or encode the SCI;

[0536] The duration of LBT;

[0537] Preset duration;

[0538] The length of time required for CPE;

[0539] The second duration includes the sum of one or more of the following: the duration required for signal processing, the duration required for decoding, the preset duration, the duration required for LBT, and the duration required for CPE;

[0540] The first time is the time when the first terminal sends, or the time when the resources are reserved or selected by the first terminal.

[0541] In an embodiment of the present application, by determining a shared portion of the channel occupancy time COT that can be shared with the second terminal, all resources selected or reserved by the second terminal are located within the COT shared portion, or, if there are resources that meet the first condition among the resources selected or reserved by the second terminal, the second terminal performs a fourth operation to determine that the COT shared portion can be shared by the second terminal, so that the second terminal can share the COT of the first terminal as much as possible, reducing the probability that the COT is snatched away by other terminals and the second terminal cannot use the COT, or reducing the probability that the second terminal must perform type 1 LBT to avoid BLT failure, thereby improving the utilization efficiency of the COT.

[0542] In the embodiment of the present application, optionally, the fourth operation includes at least one of the following:

[0543] 1) Use the target resource for transmission;

[0544] 2) Assume that the first terminal receives on the target resource;

[0545] 3) Not using, canceling or discarding the fourth resource among the resources selected or reserved by the second terminal; wherein, not using, canceling or discarding the fourth resource among the resources selected or reserved by the second terminal can also be expressed as using, canceling or discarding the transmission on the fourth resource among the resources selected or reserved by the second terminal; optionally, the transmission here can be interpreted as sending.

[0546] The fourth resource includes at least one of the following: a resource located within the first time, a resource at least partially overlapping with a resource selected or reserved by the first terminal, a resource located before the COT shared portion, a resource whose time interval with the first moment is less than or equal to the first duration, a resource not located within the COT shared portion, a resource after the COT, and a resource whose time interval with the third moment is greater than or equal to the second duration;

[0547] Optionally, the above 3) may be for the case where the first duration is the duration required for generating or encoding the SCI, and the time interval between the first moment and the resources selected or reserved by the second terminal is insufficient to regenerate or encode the SCI.

[0548] The first time is one of the following, or the sum of one of the following and the second duration:

[0549] the starting point of the COT;

[0550] The moment when the COT shares information;

[0551] The time when the second terminal obtains the COT shared information;

[0552] The moment when the second terminal finishes decoding the COT shared information;

[0553] The end of the first time;

[0554] The starting point of the shared portion of the COT;

[0555] The first duration includes the sum of one or more of the following:

[0556] The length of time required for channel or signal processing;

[0557] The time required for decoding;

[0558] The length of time required to select or reselect resources;

[0559] Preparation time;

[0560] Processing time;

[0561] The time required to generate the data packet;

[0562] PSCCH coding time;

[0563] PSSCH coding time;

[0564] The time required to generate or encode the SCI;

[0565] The duration of LBT;

[0566] Preset duration;

[0567] The length of time required for CPE;

[0568] The first time is the time when the first terminal sends, or the time when the resources reserved or selected by the first terminal are located;

[0569] The second duration is the sum of at least one or more of the following: the duration required for signal processing, the duration required for decoding, the duration required for LBT, the preset duration, and the duration required for CPE;

[0570] The third moment is the end point of the COT shared part or the end point of the COT.

[0571] In the embodiment of the present application, the COT sharing information is sent by the first terminal to the second terminal, and is indication information used to indicate that the COT of the first terminal can be shared with the second terminal, and is usually sent by the first terminal after obtaining the COT.

[0572] In some embodiments of the present application, the first terminal may not send the COT sharing information to the second terminal, but the second terminal may deduce that it can share the COT of the first terminal according to a preset method.

[0573] In the embodiment of the present application, optionally, the target resource includes at least one of the following:

[0574] a resource obtained after adjusting the first resource;

[0575] a resource determined based on the first resource;

[0576] Resources associated with the first resource;

[0577] Resources located after the first time;

[0578] resources located within the shared portion of the COT;

[0579] Resources located between the start point of the shared portion of the COT and the end point of the COT;

[0580] resources starting from the end of said first time or the start of said COT shared portion;

[0581] a resource determined based on an end point of the first time or a start point of the shared portion of the COT;

[0582] A resource whose time interval with an end point of the first time or the COT shared part is less than or equal to a second duration.

[0583] In an embodiment of the present application, optionally, if the time interval between the position of the first resource and the first moment is greater than or equal to the first duration (for example, the sending time of UE1 overlaps with the selected or reserved resource of UE2, and the time interval between the COT shared information (that is, the first moment) and the resource 1 (first resource) of UE2 is greater than the sum of the durations required for UE2 to decode the COT shared information and select or reselect resources (the first duration)), that is, the second terminal has time to select or reselect resources, and the target resource includes at least one of the following:

[0584] 1) resources or candidate resources obtained by the second terminal through resource selection or reselection;

[0585] The logic at this time is that since there is a sufficient time interval, assuming that UE2 has enough time to perform resource selection / reselection and SCI regeneration, UE2 performs resource selection / reselection and selects / reselects resource 1' (target resource).

[0586] Optionally, the resources or candidate resources obtained by resource selection or reselection are one or more resources starting from the starting point of the COT shared part.

[0587] In the embodiment of the present application, optionally, the second terminal performing resource selection or reselection includes:

[0588] In the resource selection or resource exclusion process, for at least part of the resources selected or reselected, a predetermined RSRP threshold is used to determine whether resource exclusion is required; optionally, the predetermined RSRP threshold is positive infinity (i.e., no matter what the RSRP is, it will not exceed the threshold and will not be excluded).

[0589] During the resource selection or resource exclusion process, the priority of at least part of the resources selected or reselected is set to the highest priority, or it is assumed that the priority of at least part of the resources selected or reselected is higher than the resources overlapping with them; optionally, the resources overlapping with them may be resources reserved by other terminals.

[0590] At least part of the resources obtained by resource selection or reselection is used as at least part of the resources in a preferred resource set (preferred resource set); optionally, the first terminal or other terminal may indicate at least part of the resources obtained by resource selection or reselection as at least part of the resources in the preferred resource set, and indicate at least part of the resources obtained by resource selection or reselection or the preferred resource set to the second terminal.

[0591] Determine at least part of the resources obtained by resource selection or reselection as resources in a candidate resource set of the second terminal. Further optionally, the second terminal reports the candidate resource set to a higher layer (such as a MAC layer).

[0592] Optionally, at least part of the resources obtained by the above resource selection or reselection are one or more resources starting from the starting point of the COT shared part.

[0593] By using at least one of the above resource selection or reselection methods, the second terminal can be ensured to select one or more resources starting from the starting point of the COT shared part during resource selection or reselection.

[0594] 2) Resources obtained by the second terminal performing at least one of time domain migration and frequency domain migration on the first resource;

[0595] For example, the original resource is resource 1, and resource 1' after time domain migration is the target resource.

[0596] In an embodiment of the present application, optionally, at least one of the time domain migration amount used for time domain migration of the first resource and the frequency domain migration amount used for frequency domain migration of the first resource is pre-configured, network configured, agreed upon by protocol or indicated by the first terminal.

[0597] In the embodiment of the present application, in order to prevent target resources of different terminals from conflicting, optionally, at least one of the time domain migration amount and the frequency domain migration amount corresponding to different terminals is different.

[0598] Optionally, at least one of the time domain migration amount and the frequency domain migration amount is related to at least one of the following:

[0599] The geographical location or zone ID of the second terminal;

[0600] a priority of transmission of the second terminal;

[0601] The ID of the second terminal.

[0602] 3) Resources associated with the first resources obtained by the second terminal.

[0603] In the embodiment of the present application, the resources associated with the first resource may also be expressed as resources derived based on the first resource.

[0604] In an embodiment of the present application, optionally, the target resource associated with the first resource is pre-configured, network configured, agreed upon by a protocol, or indicated by the first terminal. For example, a group of resources associated with the first resource is (pre)configured in advance, or the first terminal directly indicates a group of resources associated with the first resource.

[0605] In the embodiment of the present application, in order to prevent the target resources of different terminals from conflicting, optionally, different terminals correspond to different target resources.

[0606] Optionally, the target resource is related to at least one of the following:

[0607] The geographical location or area ID of the second terminal;

[0608] a priority of transmission of the second terminal;

[0609] The ID of the second terminal.

[0610] In an embodiment of the present application, optionally, if the time interval between the position of the first resource and the first moment is less than or equal to the first duration (for example, the time interval between the end time sent by UE1 (that is, the first moment) and resource 1 of UE2 is less than the time required for UE2 to select or reselect resources (that is, the first duration)), that is, the second terminal has no time to reselect, the target resource includes at least one of the following:

[0611] 1) resources selected or reserved by the second terminal and located in the shared portion of the COT;

[0612] Optionally, in this case, the first duration is the duration required for generating or encoding the SCI, and the time interval between the first moment and the resource selected or reserved by the second terminal is insufficient to regenerate or encode the SCI, and the second terminal uses the resources selected / reserved by it and located in the COT shared part for transmission. The resources located in the COT shared part can also be expressed as: resources located after the starting point of the COT shared part, or resources located between the starting point of the COT shared part and the end point of the COT.

[0613] 2) Resources obtained by the second terminal performing at least one of time domain migration and frequency domain migration on the first resource;

[0614] For example, the original resource is resource 1, and resource 1' after time domain migration is the target resource.

[0615] In an embodiment of the present application, optionally, at least one of the time domain migration amount used for time domain migration of the first resource and the frequency domain migration amount used for frequency domain migration of the first resource is pre-configured, network configured, agreed upon by protocol or indicated by the first terminal.

[0616] In the embodiment of the present application, in order to prevent target resources of different terminals from conflicting, optionally, at least one of the time domain migration amount and the frequency domain migration amount corresponding to different terminals is different.

[0617] Optionally, at least one of the time domain migration amount and the frequency domain migration amount is related to at least one of the following:

[0618] The geographical location or zone ID of the second terminal;

[0619] a priority of transmission of the second terminal;

[0620] The ID of the second terminal.

[0621] 3) Resources associated with the first resources obtained by the second terminal.

[0622] In the embodiment of the present application, the resources associated with the first resource may also be expressed as resources derived based on the first resource.

[0623] In an embodiment of the present application, optionally, the target resource associated with the first resource is pre-configured, network configured, agreed upon by a protocol, or indicated by the first terminal. For example, a group of resources associated with the first resource is (pre)configured in advance, or the first terminal directly indicates a group of resources associated with the first resource.

[0624] In the embodiment of the present application, in order to prevent the target resources of different terminals from conflicting, optionally, different terminals correspond to different target resources.

[0625] Optionally, the target resource is related to at least one of the following:

[0626] The geographical location or area ID of the second terminal;

[0627] a priority of transmission of the second terminal;

[0628] The ID of the second terminal.

[0629] In the embodiment of the present application, optionally, the second terminal expects the COT shared information or the COT shared part to satisfy at least one of the following, or the second terminal does not expect the COT shared information or the COT shared part to not satisfy at least one of the following:

[0630] 1) A first offset (offset1) between the start point of the COT shared part of the second terminal and the time of the COT shared information satisfies at least one of the following:

[0631] The first offset is less than or equal to the time interval between the first moment and the resource selected or reserved by the second terminal, so that the resource selected or reserved by the second terminal is located in the COT shared part;

[0632] The first offset is less than or equal to the time interval between the first moment and the resources selected or reserved by the second terminal minus at least one of the second durations, so that the resources selected or reserved by the second terminal are located in the COT shared part; wherein the second duration includes the sum of one or more of the following: the time required for signal processing, the time required for decoding, the time required for LBT, the preset time, and the time required for CPE.

[0633] Among them, optionally, the resource selected or reserved by the second terminal here may be the earliest or latest or any one or specific or all or at least part of the resources selected or reserved by the second terminal.

[0634] 2) A second offset (offset2) between the start point of the COT shared part of the second terminal and the start point of the COT satisfies at least one of the following:

[0635] The second offset is less than or equal to a first sum value, wherein the first sum value is the sum of: a time interval between the first moment (e.g., a moment of COT sharing information) and the resource selected or reserved by the second terminal, and a time interval between the first moment and a start point of the COT, so that the resource selected or reserved by the second terminal is located in a COT shared part;

[0636] The second offset is less than or equal to a second sum value, which is the sum of the following two: the time interval between the first moment and the resources selected or reserved by the second terminal minus the second duration, and the time interval between the first moment and the starting point of the COT, so that the resources selected or reserved by the second terminal are located in the shared part of the COT.

[0637] The second duration includes the sum of one or more of the following: the duration required for signal processing, the duration required for decoding, the duration required for LBT, the preset duration, and the duration required for CPE.

[0638] Among them, optionally, the resource selected or reserved by the second terminal here may be the earliest or latest or any one or specific or all or at least part of the resources selected or reserved by the second terminal.

[0639] 3) The starting point of the COT shared part is no earlier than the resources selected or reserved by the second terminal.

[0640] Optionally, the resource selected or reserved by the second terminal here may be the earliest or latest or any one or specific or all or at least part of the resources selected or reserved by the second terminal.

[0641] In an embodiment of the present application, optionally, the starting point of the COT shared part is the location of the resource selected or reserved by the second terminal; or, the time interval between the starting point of the COT shared part and the resource selected or reserved by the second terminal is not less than the second duration. Wherein, the second duration includes the sum of one or more of the following: the duration required for signal processing, the duration required for decoding, the duration required for LBT, the preset duration, and the duration required for CPE. Wherein, optionally, the resource selected or reserved by the second terminal here can be the earliest or latest or any one or specific or all or at least part of the resources selected or reserved by the second terminal.

[0642] In the embodiment of the present application, optionally, the sidelink transmission method further includes: the second terminal sends first indication information on the target resource, where the first indication information includes at least one of the following:

[0643] The resource currently used by the second terminal is the target resource;

[0644] The resource currently used by the second terminal is obtained by adjusting the first resource, or is determined based on the first resource, or is associated with the first resource;

[0645] The reservation period of the resources currently used by the second terminal is 0ms;

[0646] The resources currently used by the second terminal have no reserved resources or the reserved resources are invalid;

[0647] Indicating that at least one of the currently used resource and the reserved resource of the currently used resource does not need to be considered during a sensing process, a resource detection process, a resource selection process, a preemption process, or a re-evaluation process;

[0648] Indicating that resource exclusion based on at least one of the currently used resource and the reserved resource of the currently used resource is not required in a sensing process, a resource detection process, a resource selection process, a preemption process, or a re-evaluation process;

[0649] Indicating that at least one of the currently used resource and a reserved resource of the currently used resource is a candidate resource or an available resource;

[0650] Indicating that the reserved resource of the currently used resource is a resource in the preferred resource set;

[0651] Indicates that the resource currently being used is disposable.

[0652] Through the above indication, the periodic reservation of the currently used resources should not affect the perception process or resource detection process or resource selection process or preemption process or re-evaluation process of other terminals.

[0653] In an embodiment of the present application, the second terminal carries the first indication information in the SCI or PSSCH of the target resource.

[0654] In the embodiment of the present application, optionally, the method further includes:

[0655] The second terminal performs a second operation, where the second operation includes at least one of the following:

[0656] At least one of the currently used resource and the reserved resource of the currently used resource is not considered in the sensing process, the resource detection process, the resource selection process, the preemption process, or the re-evaluation process;

[0657] In a sensing process, a resource detection process, a resource selection process, a preemption process, or a re-evaluation process, resource exclusion is not performed based on at least one of the currently used resource and the reserved resource of the currently used resource;

[0658] Assuming that at least one of the currently used resource and the reserved resource of the currently used resource is a candidate resource or an available resource;

[0659] Select at least part of at least one of the currently used resources and the reserved resources of the currently used resources; for example, the periodic reserved resources of the currently used resources may be selected;

[0660] Ignore the reserved resources of the currently used resources;

[0661] Assume that the reserved resources of the currently used resources are invalid;

[0662] It is assumed that the reservation period of the reserved resources of the currently used resources is 0 ms.

[0663] In the embodiment of the present application, optionally, the sidelink transmission method further includes: the second terminal sends second indication information in a second resource, where the second resource is a resource after the target resource of the second terminal, and the second indication information includes at least one of the following:

[0664] The resource before the second resource is the target resource;

[0665] The resource before the second resource is obtained by adjusting the first resource, or is determined based on the first resource, or is associated with the first resource;

[0666] The reservation period of the resource before the second resource is 0ms;

[0667] There is no reserved resource or the reserved resource is invalid for the resource before the second resource;

[0668] Indicating that at least one of a resource before the second resource and a reserved resource of the resource before the second resource does not need to be considered during a sensing process, a resource detection process, a resource selection process, a preemption process, or a reassessment process;

[0669] Indicating that there is no need to exclude resources based on at least one of a resource before the second resource and a reserved resource of the resource before the second resource during a sensing process, a resource detection process, a resource selection process, a preemption process, or a reassessment process;

[0670] Indicate that at least one of a resource before the second resource and a reserved resource of the resource before the second resource is a candidate resource or an available resource;

[0671] Indicates that the reserved resource before the second resource is a resource in the preferred resource set.

[0672] In an embodiment of the present application, the second terminal carries the second indication information in the SCI or PSSCH of the target resource.

[0673] In the embodiment of the present application, optionally, the method further includes:

[0674] The second terminal performs a third operation, where the third operation includes at least one of the following:

[0675] At least one of the resource before the second resource and the reserved resource of the resource before the second resource is not considered in the sensing process or the resource detection process or the resource selection process or the preemption process or the re-evaluation process;

[0676] In a sensing process, a resource detection process, a resource selection process, a preemption process, or a re-evaluation process, resource exclusion is not performed based on at least one of a resource before the second resource and a reserved resource of the resource before the second resource;

[0677] Assuming that at least one of a resource before the second resource and a reserved resource of the resource before the second resource is a candidate resource or an available resource;

[0678] selecting at least a portion of at least one of a resource before the second resource and a reserved resource of the resource before the second resource;

[0679] Ignore reserved resources of resources before the second resource;

[0680] Assume that the reserved resources of the resources before the second resource are invalid;

[0681] Assume that the reservation period of the reserved resources before the second resource is 0 ms.

[0682] In an embodiment of the present application, optionally, the sidelink transmission method further includes: if the first resource is located before the starting point of the COT shared part, and the target resource corresponding to the first resource is located in the COT shared part, the second terminal determines the time domain position of the reserved resource, and the time domain position of the reserved resource is determined according to the position of the first resource. Optionally, the time domain position of the reserved resource is the time domain position of the first resource + an integer number of reservation periods. The logic of this method is that the migrated resource is 1shot or one-time or only for the current period, and the subsequent periodic reserved resources are still based on the position of resource 1 offset by j reservation periods, that is, it can be expressed as resource 1+P*j, rather than based on resource 1'+P*j, so the periodic reservation corresponding to resource 1' should not affect the perception process or resource detection process or resource selection process or preemption process or re-evaluation process of other UEs. P is the reservation period.

[0683] In an embodiment of the present application, if it is originally assumed that the SCI transmitted on the first resource will point to the third resource, or the SCI of the resource located at tj*P (and actually used for transmission) before the first resource in time slot t points to the corresponding resource before the third resource in time slot u, for example, the previous resource located at uj*P (and actually used for transmission), the sidelink transmission method also includes: after the second terminal determines the target resource, the second terminal sends a third indication information on the target resource corresponding to the first resource, the third indication information indicates the third resource, the third resource is at least part of the resources selected or reserved by the second terminal that should have been indicated on the first resource, or the third resource is at least part of the authorized resources where the first resource is located, or the third resource is at least part of the resources selected or reserved by the second terminal. For example, after resource 1 is moved to resource 1', the SCI of resource 1' points to resources 2 and 3 that the SCI on resource 1 may indicate.

[0684] In an embodiment of the present application, optionally, if the number of the first resources is multiple, at least part of the target resources corresponding to or associated with the multiple first resources are continuous in time domain; or, the target resources corresponding to the first resources are continuous in time domain with a third resource, and the third resource is at least part of the resources selected or reserved by the second terminal that should have been indicated on the first resource, or the third resource is at least part of the authorized resources where the first resource is located.

[0685] In the embodiment of the present application, optionally, the sidelink transmission method further includes:

[0686] The second terminal informs the higher layer of at least one of the first resource, the target resource and the third resource, wherein the third resource is at least part of the resources selected or reserved by the second terminal that should have been indicated on the first resource, or the third resource is at least part of the resources in the authorized resource where the first resource is located. For example, the second terminal informs its higher layer (such as the MAC layer) of the first resource (resource 1), the third resource (resources 2, 3) and / or the target resource (resource 1').

[0687] In the embodiment of the present application, optionally, the first resource includes at least one of the following:

[0688] resources selected or reserved by the second terminal and located within the first time;

[0689] Resources selected or reserved by the second terminal that at least partially overlap with resources selected or reserved by the first terminal;

[0690] The time interval between the resources selected or reserved by the second terminal and the resources selected or reserved by the first terminal is less than or equal to the required duration or preset duration of LBT;

[0691] The resources selected or reserved by the second terminal overlap with the resources selected or reserved by the first terminal in time domain, and belong to the same RB set, interleaving set, resource pool or BWP as the resources selected or reserved by the first terminal;

[0692] The time interval between the resources selected or reserved by the second terminal and the resources selected or reserved by the first terminal is less than or equal to the required duration or preset duration of LBT, and the resources selected or reserved by the first terminal belong to the same RB set, interleaved set, resource pool or BWP;

[0693] The resources selected or reserved by the second terminal are located before the COT shared part;

[0694] resources selected or reserved by the second terminal and located within the shared portion of the COT;

[0695] The resources selected or reserved by the second terminal are located after the end point of the COT shared part;

[0696] Among the resources selected or reserved by the second terminal, the resources are located after the end point of the COT shared portion and the time interval between the resources and the end point of the COT shared portion is less than or equal to a preset threshold;

[0697] The resources selected or reserved by the second terminal are resources located after the start point of the COT shared part.

[0698] In the embodiment of the present application, optionally, the second terminal performing the fourth operation includes:

[0699] If there are resources satisfying the first condition among the resources selected or reserved by the second terminal, performing a fourth operation;

[0700] The resources that meet the first condition include at least one of the following:

[0701] Resources located in the first place;

[0702] resources that at least partially overlap with resources selected or reserved by the first terminal;

[0703] Resources located before the shared portion of the COT;

[0704] Resources located after the shared portion of the COT;

[0705] Resources not located within the shared portion of the COT;

[0706] Resources whose time interval from the first moment is less than or equal to the first duration;

[0707] A resource located in the COT shared portion and having a time interval with a start point of the COT shared portion greater than or equal to a second duration;

[0708] Resources whose time interval with the start point of the COT or the start point of the shared part of the COT or the end point of the shared part of the COT is less than or equal to a preset threshold;

[0709] The first time is one of the following, or the sum of one of the following and the second duration:

[0710] the starting point of the COT;

[0711] The moment when the COT shares information;

[0712] The time when the second terminal obtains the COT shared information;

[0713] The moment when the second terminal finishes decoding the COT shared information;

[0714] The end of the first time;

[0715] The starting point of the shared portion of the COT;

[0716] The first duration includes the sum of one or more of the following:

[0717] The length of time required for channel or signal processing;

[0718] The time required for decoding;

[0719] The length of time required to select or reselect resources;

[0720] Preparation time;

[0721] Tproc,0;

[0722] Tproc,1;

[0723] The time required to generate the data packet;

[0724] PSCCH coding time;

[0725] PSSCH coding time;

[0726] The time required to generate or encode the SCI;

[0727] The duration of LBT;

[0728] Preset duration;

[0729] The length of time required for CPE;

[0730] The second duration includes the sum of one or more of the following: the duration required for signal processing, the duration required for decoding, the duration required for LBT, the preset duration, and the duration required for CPE.

[0731] The first time is the time when the first terminal sends, or the time when the resources are reserved or selected by the first terminal.

[0732] In the embodiment of the present application, optionally, the second terminal performing the fourth operation includes: when a second condition is met, the second terminal performing the fourth operation;

[0733] The second condition includes at least one of the following:

[0734] The second terminal is configured or pre-configured or indicated to be able to or must perform the fourth operation;

[0735] The priority corresponding to the resource selected or reserved by the second terminal is higher than or equal to the first preset threshold;

[0736] The priority corresponding to the resource selected or reserved by the second terminal is lower than or equal to the second preset threshold;

[0737] The transmission corresponding to the second terminal is a specific transmission type;

[0738] The resources selected or reserved by the second terminal are used to transmit a specific message.

[0739] In an embodiment of the present application, it is assumed that the second terminal is a mode1 UE or a terminal scheduled by a base station, or the base station configures or schedules SL resources for the second terminal, and the SL resources are located before the COT shared part or after the COT shared part of the first terminal or are different from the frequency domain resources of the part to which the first terminal successfully accesses, for example, using different RB sets.

[0740] For the base station, optionally, the base station configures or sends permission information to the second terminal, where the permission information indicates that the second terminal must / can adopt the above solution.

[0741] For the second terminal, if the manufacturer pre-configures / the base station configures or sends permission information to the second terminal, the second terminal must / can use the above scheme for transmission. For example, after the base station permits, the second terminal can share the COT of the first terminal through migration; if the base station does not permit, the second terminal can only access and use the SL resources allocated or scheduled by the base station.

[0742] In the embodiment of the present application, optionally, the target resource and the first resource occupy the same frequency domain RB / interlace.

[0743] In the embodiment of the present application, optionally, the RB sets occupied by the target resource and the first resource may be the same or different.

[0744] The following is an example of the sidelink transmission method in the embodiment of the present application, in combination with a specific application scenario.

[0745] Embodiment 1 of the present application:

[0746] Please refer to Figure 8 In this embodiment, UE1 obtains a COT, and starts to share the part after an offset from the starting point of the COT with UE2, and UE2 has selected or reserved resources 1, 2, 3, 4 and 5, resource 1 is located before the shared part of COT, resources 2 and 3 are located in the shared part of COT, resources 4 and 5 are located after the shared part of COT, and resource 1 is a periodic reserved resource corresponding to a previous resource A, and the SCI of resource A also indicates resources B and C corresponding to resources 2 and 3 after deducting the periodic reservation P1, so if it is assumed that SCI is sent on resource 1, SCI will indicate resources 2 and 3.

[0747] UE2 behaviors include at least one of the following four:

[0748] Case 1: After UE2 decodes the COT sharing information or determines the COT sharing part, there is enough time for reselection. At this time, UE2 reselects resources at least for the transport block (TB) originally intended to be transmitted on resource 1. Please refer to Fig. 9 , for example, reselecting to resource 1'. In this embodiment, the first resource includes resource 1, and the target resource includes resource 1'.

[0749] Case 2: After UE2 decodes the COT shared information or determines that there is not enough time for reselection after the COT shared part is determined, but there is enough time to regenerate the SCI, then the resource 1' obtained after the migration based on resource 1 will be used for transmission, and the SCI on resource 1' is the regenerated SCI, which points to resources 2 and 3. Please refer to Fig.10 Further optionally, the physical layer informs the MAC layer of the information of resource 1'. In this embodiment, the first resource includes resource 1, and the target resource includes resource 1'.

[0750] Case 3: After UE 2 decodes the COT shared information or UE2 determines that there is no time to regenerate the SCI after the COT shared part, resources 1, 2 and 3 are moved into the COT according to certain rules, for example, resource 1 is moved to resource 1'. Further, optionally, the TB of resources 2 and 3 is reselected, and two consecutive time domain resources 2' and 3' following resource 1 are reselected. Please refer to Fig.11In this embodiment, the first resources include resources 1, 2, and 3, and the target resources include resources 1', 2', and 3'.

[0751] Alternatively, please refer to Fig.12 , resource 1 is moved N slots to resource 1', and resources 2 and 3 are also moved N slots respectively, to obtain resources 2' and 3', so as to be transmitted on resources 1', 2' and 3'. In this embodiment, the first resource includes resources 1, 2 and 3, and the target resource includes resources 1', 2' and 3'.

[0752] Case 4: UE2 does not have enough time to launch the target resource based on the first resource, so UE2 can only discard resource 1 which is not in the COT, and only perform LBT on resources 2 and 3 and try to access.

[0753] In addition, considering that it is possible that UE1 indicates the same offset to UE2 and UE3, in order to further avoid overlap in the frequency domain between UE2 and UE3, UE1 can optionally indicate which interlace or RB to use for UE2 and UE3, or indicate how to migrate in the frequency domain, or the migration in the frequency domain is related to the UE ID, so that UE2 and UE3 can deduce their respective corresponding interlace or RB; or for example, on the basis of the time domain migration offset, it is necessary to continue to migrate x, and x is related to the UE ID or is an additional indication.

[0754] The above examples are mainly for resources 1, 2, and 3, and there is no restriction on the operations of resources 4 and 5. Resources 4 and 5 can use similar operations as resources 1 / 2 / 3.

[0755] Embodiment 2 of the present application:

[0756] In this embodiment, UE1 and / or UE2 determines an offset:

[0757] One way to achieve this is: Please refer to Fig.13 and Fig.14 , the offset is the time interval between the COT shared information and the starting point of the COT shared part shared with UE2, then the offset must satisfy at least one of the following, or UE2 does not expect the offset not to satisfy at least one of the following:

[0758] 1) The offset is less than or equal to the time interval between the first moment and the resource selected or reserved by UE2, so that the resource selected or reserved by UE2 is located in the COT shared part. Fig.13 , if the first moment is the moment of COT sharing information, in the figure, offset = the time interval between the COT sharing information and the starting point of the COT shared part shared with UE2, then resource 1 is just located in the COT shared part; for example Fig.14 If the first moment is the moment of COT sharing information, Fig.14 where offset is the time interval between the COT sharing information and the start point of the COT sharing part shared with UE2, then Resource 1 is located within the COT sharing part.

[0759] 2) The offset is less than or equal to: the time interval between the first moment (such as the moment of COT sharing information) and the resource selected or reserved by UE2 minus at least one of the time durations required for COT sharing information processing and decoding, LBT, preset duration, and CPE duration, so that the UE2 resource is located within the COT sharing part.

[0760] One implementation method is: Please refer to Fig.15 where the offset is the time interval between the start point of the COT sharing part of UE2 and the start point of the COT, then the offset should satisfy at least one of the following:

[0761] 1) The offset is less than or equal to: the sum of the time interval between the first moment and the resource selected or reserved by UE2, and the time interval between the first moment and the start point of the COT, so that the UE2 resource is located within the COT sharing part. For example Fig.15 If the first moment is the start moment of the COT, Fig.15 where offset = the time interval between the start point of the COT and the start point of the COT sharing part shared with UE2, then Resource 1 is just located within the COT sharing part;

[0762] 2) The offset is less than or equal to: the sum of the time interval between the first moment and the resource selected or reserved by UE2 minus at least one of the time durations required for COT sharing information processing and decoding, LBT, preset duration, and CPE duration, and the time interval between the first moment and the start point of the COT, so that the UE2 resource is located within the COT sharing part.

[0763] In one implementation, the above offset is informed by UE1 to UE2.

[0764] Regarding the start point of the COT sharing part, consider the following: The start point of the COT sharing part is not earlier than the resource selected or reserved by UE2, the start point is the location of the UE2 resource, or the time interval between the start point of the COT sharing part and the resource selected or reserved by UE2 is not less than the time duration required for at least one of LBT, preset duration, and CPE duration.

[0765] In one implementation, the above start point is informed by UE1 to UE2.

[0766] Embodiment 3 of this application:

[0767] UE1 determines the COT shared part shared with UE2. If the starting point of the COT shared part is later than resource 1, when UE1 selects the resource of the COT shared information, it ensures that the time interval between the location of the resource of the COT shared information and resource 1 is greater than the first duration.

[0768] Alternatively, when UE1 determines the resource selection window [n+T1, n+T2], n+T2 is made earlier than resource 1, and further, the time interval between n+T2 and resource 1 is greater than the first duration.

[0769] The sidelink transmission method provided in the embodiment of the present application may be executed by a sidelink transmission device. In the embodiment of the present application, the sidelink transmission device provided in the embodiment of the present application is described by taking the sidelink transmission device executing the sidelink transmission method as an example.

[0770] Please refer to Fig.16 The embodiment of the present application further provides a sidelink transmission device 160, including:

[0771] A determination module 161 is used to determine a channel occupation time COT shared part that can be shared with the second terminal, and all the resources selected or reserved by the second terminal are located in the COT shared part, or there are resources that meet the first condition among the resources selected or reserved by the second terminal;

[0772] A first execution module 162, configured to execute a first operation to determine that the COT shared portion can be shared by the second terminal if there is a resource satisfying a first condition among the resources selected or reserved by the second terminal;

[0773] The resources that meet the first condition include at least one of the following:

[0774] Resources located in the first place;

[0775] resources that at least partially overlap with resources selected or reserved by the first terminal;

[0776] Resources located before the shared portion of the COT;

[0777] Resources located after the shared portion of the COT;

[0778] Resources not located within the shared portion of the COT;

[0779] Resources whose time interval from the first moment is less than or equal to the first duration;

[0780] A resource located in the COT shared portion and having a time interval with a start point of the COT shared portion greater than or equal to a second duration;

[0781] Resources whose time interval with the start point of the COT or the start point of the shared part of the COT or the end point of the shared part of the COT is less than or equal to a preset threshold;

[0782] The first time is one of the following, or the sum of one of the following and the second duration:

[0783] the starting point of the COT;

[0784] The moment when the COT shares information;

[0785] The time when the second terminal obtains the COT shared information;

[0786] The moment when the second terminal finishes decoding the COT shared information;

[0787] The end of the first time;

[0788] The starting point of the shared portion of the COT;

[0789] The first duration includes the sum of one or more of the following:

[0790] The length of time required for channel or signal processing;

[0791] The time required for decoding;

[0792] The length of time required to select or reselect resources;

[0793] Preparation time;

[0794] Processing time;

[0795] The time required to generate the data packet;

[0796] Physical side link control channel PSCCH coding time;

[0797] Physical side link shared channel PSSCH coding time;

[0798] The time required to generate or encode the SCI;

[0799] The time required to listen first and then send LBT;

[0800] Preset duration;

[0801] The time required to extend the cyclic prefix CPE;

[0802] The second duration includes the sum of one or more of the following: the duration required for signal processing, the duration required for decoding, the preset duration, the duration required for LBT, and the duration required for CPE;

[0803] The first time is the time when the first terminal sends, or the time when the resources are reserved or selected by the first terminal.

[0804] In an embodiment of the present application, by determining a shared portion of the channel occupancy time COT that can be shared with the second terminal, all resources selected or reserved by the second terminal are located within the COT shared portion, or, if there are resources satisfying the first condition among the resources selected or reserved by the second terminal, a first operation is performed to determine that the COT shared portion can be shared by the second terminal, so that the second terminal can share the COT of the first terminal as much as possible, thereby reducing the probability that the COT is snatched away by other terminals and the second terminal cannot use the COT, or reducing the probability that the second terminal must perform type 1 LBT to avoid BLT failure, thereby improving the utilization efficiency of the COT.

[0805] Optionally, the first operation includes at least one of the following:

[0806] Assuming that the second terminal transmits on the target resource;

[0807] Receive on the target resource;

[0808] not using, discarding or canceling reception of a fourth resource among the resources selected or reserved by the second terminal;

[0809] instructing the second terminal to use the target resource for transmission;

[0810] instructing the second terminal not to use, discard or cancel transmission on the fourth resource;

[0811] Determine at least one of the location information of the COT shared portion and the location information of the COT shared information;

[0812] in,

[0813] The fourth resource includes at least one of the following: a resource located within the first time, a resource at least partially overlapping with a resource selected or reserved by the first terminal, a resource located before the COT shared portion, a resource whose time interval with the first moment is less than or equal to the first duration, a resource not located within the COT shared portion, a resource after the COT, and a resource whose time interval with the third moment is greater than or equal to the second duration;

[0814] Wherein, the third moment is the end point of the COT shared part or the end point of the COT;

[0815] The target resource includes at least one of the following:

[0816] a resource obtained after adjusting the first resource;

[0817] a resource determined based on the first resource;

[0818] Resources associated with the first resource;

[0819] Resources located after the first time;

[0820] resources located within the shared portion of the COT;

[0821] Resources located between the start point of the shared portion of the COT and the end point of the COT;

[0822] resources starting from the end of said first time or the start of said COT shared portion;

[0823] a resource determined based on an end point of the first time or a start point of the shared portion of the COT;

[0824] A resource whose time interval with an end point of the first time or the COT shared part is less than or equal to a second duration.

[0825] Optionally, the instructing the second terminal to use the target resource for transmission includes at least one of the following:

[0826] instructing the second terminal to select or reselect resources to obtain the target resource;

[0827] instructing the second terminal to perform at least one of time domain migration and frequency domain migration on the first resource to obtain the target resource;

[0828] indicating a migration amount, wherein the migration amount includes at least one of a time domain migration amount and a frequency domain migration amount;

[0829] indicating the target resource;

[0830] Indicates the association relationship between the first resource and the target resource.

[0831] Optionally, when there are multiple second terminals, different second terminals correspond to different target resources; and the target resource is related to at least one of the following:

[0832] The geographical location or area ID of the second terminal;

[0833] a priority of transmission of the second terminal;

[0834] The ID of the second terminal.

[0835] Optionally, when there are multiple second terminals, different second terminals correspond to different migration amounts; and the migration amounts corresponding to different second terminals are related to at least one of the following:

[0836] The geographical location or area ID of the second terminal;

[0837] a priority of transmission of the second terminal;

[0838] The ID of the second terminal.

[0839] Optionally, the determining at least one of the location of the COT shared part and the location of the COT shared information comprises at least one of the following:

[0840] Determine a first offset between a start point of the COT shared portion of the second terminal and a time point of the COT shared information;

[0841] Determine a second offset between a start point of the COT shared portion of the second terminal and a start point of the COT;

[0842] The determined starting point of the COT shared portion is no earlier than the resources selected or reserved by the second terminal;

[0843] The first offset satisfies at least one of the following:

[0844] The first offset is less than or equal to the time interval between the first moment and the resource selected or reserved by the second terminal;

[0845] The first offset is less than or equal to the time interval between the first moment and the resource selected or reserved by the second terminal minus at least one of the second durations;

[0846] The second offset satisfies at least one of the following:

[0847] The second offset is less than or equal to a first sum value, the first sum value being the sum of: a time interval between the first moment and the resource selected or reserved by the second terminal, and a time interval between the first moment and the start point of the COT;

[0848] The second offset is less than or equal to a second sum value, which is the sum of the following two: the time interval between the first moment and the resources selected or reserved by the second terminal minus the second duration, and the time interval between the first moment and the starting point of the COT.

[0849] Optionally, the sidelink transmission device 160 further includes:

[0850] A resource selection module, configured to select a resource, wherein the selected resource is earlier than or located at a second time, or a time interval between the selected resource and a resource selected or reserved by the second terminal is greater than or equal to a first duration;

[0851] The second moment is the moment at which the resource is selected or reserved by the second terminal minus at least one of the following:

[0852] The length of time required for channel or signal processing;

[0853] The time required for decoding;

[0854] The length of time required to select or reselect resources;

[0855] Preparation time;

[0856] Processing time;

[0857] The time required to generate the data packet;

[0858] PSCCH coding time;

[0859] PSSCH coding time;

[0860] The time required to generate or encode the SCI.

[0861] Optionally, the resource selection module is used to determine a resource selection window or candidate resources;

[0862] The resource selection window is earlier than or located at the second moment, or the time interval between the resource selection window and the resource selected or reserved by the second terminal is greater than or equal to a third duration;

[0863] or

[0864] The latest candidate resource among the candidate resources is earlier than or located at the second time, or the time interval between the latest candidate resource among the candidate resources and the resource selected or reserved by the second terminal is greater than or equal to the first duration.

[0865] Optionally, the selected or reselected resource is a resource of the COT shared information.

[0866] Optionally, the sidelink transmission device 160 further includes:

[0867] A first receiving module, configured to receive first indication information sent by the second terminal on the target resource;

[0868] A first processing module, configured to perform a second operation according to the first indication information;

[0869] The first indication information includes at least one of the following:

[0870] The resource currently used by the second terminal is the target resource;

[0871] The resource currently used by the second terminal is obtained by adjusting the first resource, or is determined based on the first resource, or is associated with the first resource;

[0872] The reservation period of the resources currently used by the second terminal is 0ms;

[0873] The resources currently used by the second terminal have no reserved resources or the reserved resources are invalid;

[0874] Indicating that at least one of the currently used resource and the reserved resource of the currently used resource does not need to be considered during a sensing process, a resource detection process, a resource selection process, a preemption process, or a re-evaluation process;

[0875] Indicating that resource exclusion based on at least one of the currently used resource and the reserved resource of the currently used resource is not required in a sensing process, a resource detection process, a resource selection process, a preemption process, or a re-evaluation process;

[0876] Indicating that at least one of the currently used resource and a reserved resource of the currently used resource is a candidate resource or an available resource;

[0877] Indicating that the reserved resource of the currently used resource is a resource in the preferred resource set;

[0878] Indicates that the resource currently being used is disposable;

[0879] The second operation includes at least one of the following:

[0880] At least one of the currently used resource and the reserved resource of the currently used resource is not considered in the sensing process, the resource detection process, the resource selection process, the preemption process, or the re-evaluation process;

[0881] In a sensing process, a resource detection process, a resource selection process, a preemption process, or a re-evaluation process, resource exclusion is not performed based on at least one of the currently used resource and the reserved resource of the currently used resource;

[0882] Assuming that at least one of the currently used resource and the reserved resource of the currently used resource is a candidate resource or an available resource;

[0883] Selecting at least a portion of at least one of the currently used resource and a reserved resource of the currently used resource;

[0884] Ignore the reserved resources of the currently used resources;

[0885] Assume that the reserved resources of the currently used resources are invalid;

[0886] It is assumed that the reservation period of the reserved resources of the currently used resources is 0 ms.

[0887] Optionally, the sidelink transmission device 160 further includes:

[0888] A second receiving module is used to receive second indication information sent by the second terminal in a second resource; the second resource is a resource after the target resource of the second terminal;

[0889] A second processing module, configured to perform a third operation according to the second indication information;

[0890] The second indication information includes at least one of the following:

[0891] The resource before the second resource is the target resource;

[0892] The resource before the second resource is obtained by adjusting the first resource, or is determined based on the first resource, or is associated with the first resource;

[0893] The reservation period of the resource before the second resource is 0ms;

[0894] There is no reserved resource or the reserved resource is invalid for the resource before the second resource;

[0895] Indicating that at least one of a resource before the second resource and a reserved resource of the resource before the second resource does not need to be considered during a sensing process, a resource detection process, a resource selection process, a preemption process, or a reassessment process;

[0896] Indicating that there is no need to exclude resources based on at least one of a resource before the second resource and a reserved resource of the resource before the second resource during a sensing process, a resource detection process, a resource selection process, a preemption process, or a reassessment process;

[0897] Indicate that at least one of a resource before the second resource and a reserved resource of the resource before the second resource is a candidate resource or an available resource;

[0898] Indicating that the reserved resource of the resource before the second resource is a resource in the preferred resource set;

[0899] The third operation includes at least one of the following:

[0900] At least one of the resource before the second resource and the reserved resource of the resource before the second resource is not considered in the sensing process or the resource detection process or the resource selection process or the preemption process or the re-evaluation process;

[0901] In a sensing process, a resource detection process, a resource selection process, a preemption process, or a re-evaluation process, resource exclusion is not performed based on at least one of a resource before the second resource and a reserved resource of the resource before the second resource;

[0902] Assuming that at least one of a resource before the second resource and a reserved resource of the resource before the second resource is a candidate resource or an available resource;

[0903] selecting at least part of at least one of a resource before the second resource and a reserved resource of the resource before the second resource; -

[0904] Ignore reserved resources of resources before the second resource;

[0905] Assume that the reserved resources of the resources before the second resource are invalid;

[0906] Assume that the reservation period of the reserved resources before the second resource is 0 ms.

[0907] Optionally, the first resource includes at least one of the following:

[0908] resources selected or reserved by the second terminal and located within the first time;

[0909] Resources selected or reserved by the second terminal that at least partially overlap with resources selected or reserved by the first terminal; resources selected or reserved by the second terminal whose time interval with resources selected or reserved by the first terminal is less than or equal to the required duration or preset duration of LBT;

[0910] The resources selected or reserved by the second terminal overlap with the resources selected or reserved by the first terminal in time domain, and belong to the same resource block RB set, interleaving set, resource pool or BWP as the resources selected or reserved by the first terminal;

[0911] The time interval between the resources selected or reserved by the second terminal and the resources selected or reserved by the first terminal is less than or equal to the required duration or preset duration of LBT, and the resources selected or reserved by the first terminal belong to the same RB set, interleaved set, resource pool or BWP;

[0912] The resources selected or reserved by the second terminal are located before the COT shared part;

[0913] resources selected or reserved by the second terminal and located within the shared portion of the COT;

[0914] The resources selected or reserved by the second terminal are located after the end point of the COT shared part;

[0915] Among the resources selected or reserved by the second terminal, the resources are located after the end point of the COT shared portion and the time interval between the resources and the end point of the COT shared portion is less than or equal to a preset threshold;

[0916] The resources selected or reserved by the second terminal are resources located after the start point of the COT shared part.

[0917] Optionally, if there are multiple first resources, at least some of the target resources corresponding to or associated with the multiple first resources are continuous in time domain;

[0918] or

[0919] The target resource corresponding to the first resource is continuous in time domain with the third resource, and the third resource is at least a part of the authorized resource where the first resource is located.

[0920] Optionally, the first execution module 162 is configured to determine a shared portion of the COT that can be shared with the second terminal if the second condition is met;

[0921] The second condition includes at least one of the following:

[0922] The first terminal is configured or pre-configured or indicated to be able to or must perform the first operation;

[0923] The first terminal is capable of continuing transmission after the COT shared portion;

[0924] The first terminal has selected or reserved resources after the COT shared part;

[0925] The first terminal is capable of modifying the MCS;

[0926] The first terminal is capable of using a specific MCS or a higher MCS;

[0927] The resources selected or reserved for the first terminal are compatible with a specific MCS or a higher MCS;

[0928] The priority corresponding to the resource selected or reserved by the second terminal is higher than or equal to the first preset threshold;

[0929] The priority corresponding to the resource selected or reserved by the second terminal is lower than or equal to the second preset threshold;

[0930] The transmission corresponding to the second terminal is a specific transmission type;

[0931] The resources selected or reserved by the second terminal are used to transmit a specific message.

[0932] The sidelink transmission device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be another device other than a terminal. Exemplarily, the terminal may include but is not limited to the types of terminal 11 listed above, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

[0933] The sidelink transmission device provided in the embodiment of the present application can achieve Figure 6 The various processes implemented by the method embodiment and achieving the same technical effect are not described here to avoid repetition.

[0934] Please refer to Fig.17 The embodiment of the present application further provides a sidelink transmission device 170, including:

[0935] An acquisition module 171 is configured to acquire a COT shared portion that can be shared by the first terminal with the second terminal, wherein all resources selected or reserved by the second terminal are located within the COT shared portion, or resources selected or reserved by the second terminal include resources that meet a first condition;

[0936] A second execution module 172, configured to, if there is a resource satisfying the first condition among the resources selected or reserved by the second terminal, the second terminal executing a fourth operation to determine that the COT shared portion can be shared by the second terminal;

[0937] The resources that meet the first condition include at least one of the following:

[0938] Resources located in the first place;

[0939] resources that at least partially overlap with resources selected or reserved by the first terminal;

[0940] Resources located before the shared portion of the COT;

[0941] Resources located after the shared portion of the COT;

[0942] Resources not located within the shared portion of the COT;

[0943] Resources whose time interval from the first moment is less than or equal to the first duration;

[0944] A resource located in the COT shared portion and having a time interval with a start point of the COT shared portion greater than or equal to a second duration;

[0945] Resources whose time interval with the start point of the COT or the start point of the shared part of the COT or the end point of the shared part of the COT is less than or equal to a preset threshold;

[0946] The first time is one of the following, or the sum of one of the following and the second duration:

[0947] the starting point of the COT;

[0948] The moment when the COT shares information;

[0949] The time when the second terminal obtains the COT shared information;

[0950] The moment when the second terminal finishes decoding the COT shared information;

[0951] The end of the first time;

[0952] The starting point of the shared portion of the COT;

[0953] The first duration includes the sum of one or more of the following:

[0954] The length of time required for channel or signal processing;

[0955] The time required for decoding;

[0956] The length of time required to select or reselect resources;

[0957] Preparation time;

[0958] Processing time;

[0959] The time required to generate the data packet;

[0960] PSCCH coding time;

[0961] PSSCH coding time;

[0962] The time required to generate or encode the SCI;

[0963] The duration of LBT;

[0964] Preset duration;

[0965] The length of time required for CPE;

[0966] The second duration includes the sum of one or more of the following: the duration required for signal processing, the duration required for decoding, the preset duration, the duration required for LBT, and the duration required for CPE;

[0967] The first time is the time when the first terminal sends, or the time when the resources are reserved or selected by the first terminal.

[0968] In an embodiment of the present application, by determining a shared portion of the channel occupancy time COT that can be shared with the second terminal, all resources selected or reserved by the second terminal are located within the COT shared portion, or, if there are resources satisfying the first condition among the resources selected or reserved by the second terminal, a fourth operation is performed to determine that the COT shared portion can be shared by the second terminal, so that the second terminal can share the COT of the first terminal as much as possible, thereby reducing the probability that the COT is snatched away by other terminals and the second terminal cannot use the COT, or reducing the probability that the second terminal must perform type 1 LBT to avoid BLT failure, thereby improving the utilization efficiency of the COT.

[0969] Optionally, the fourth operation includes at least one of the following:

[0970] Use the target resource for transfer;

[0971] Assuming that the first terminal receives on the target resource; not using, canceling or discarding the fourth resource among the resources selected or reserved by the second terminal;

[0972] The fourth resource includes at least one of the following: a resource located within the first time, a resource at least partially overlapping with a resource selected or reserved by the first terminal, a resource located before the COT shared portion, a resource whose time interval with the first moment is less than or equal to the first duration, a resource not located within the COT shared portion, a resource after the COT, and a resource whose time interval with the third moment is greater than or equal to the second duration;

[0973] The first time is one of the following, or the sum of one of the following and the second duration:

[0974] the starting point of the COT;

[0975] The moment when the COT shares information;

[0976] The time when the second terminal obtains the COT shared information;

[0977] The moment when the second terminal finishes decoding the COT shared information;

[0978] The end of the first time;

[0979] The starting point of the shared portion of the COT;

[0980] The first duration includes the sum of one or more of the following:

[0981] The length of time required for channel or signal processing;

[0982] The time required for decoding;

[0983] The length of time required to select or reselect resources;

[0984] Preparation time;

[0985] Processing time;

[0986] The time required to generate the data packet;

[0987] PSCCH coding time;

[0988] PSSCH coding time;

[0989] The time required to generate or encode the SCI;

[0990] The duration of LBT;

[0991] Preset duration;

[0992] The length of time required for CPE;

[0993] The first time is the time sent by the first terminal, or the time when the resources reserved or selected by the first terminal are located;

[0994] The second duration is the sum of at least one or more of the following: the duration required for signal processing, the duration required for decoding, the duration required for LBT, the preset duration, and the duration required for CPE;

[0995] The third moment is the end point of the COT shared part or the end point of the COT.

[0996] Optionally, the target resource includes at least one of the following:

[0997] a resource obtained after adjusting the first resource;

[0998] a resource determined based on the first resource;

[0999] Resources associated with the first resource;

[1000] Resources located after the first time;

[1001] resources located within the shared portion of the COT;

[1002] Resources located between the start point of the shared portion of the COT and the end point of the COT;

[1003] resources starting from the end of said first time or the start of said COT shared portion;

[1004] a resource determined based on an end point of the first time or a start point of the shared portion of the COT;

[1005] A resource whose time interval with an end point of the first time or the COT shared part is less than or equal to a second duration.

[1006] Optionally, if the time interval between the location of the first resource and the first moment is greater than or equal to the first duration, the target resource includes at least one of the following:

[1007] The resources or candidate resources obtained by the second terminal through resource selection or reselection;

[1008] Resources obtained by the second terminal performing at least one of time domain migration and frequency domain migration on the first resource;

[1009] The second terminal obtains resources associated with the first resource.

[1010] Optionally, the second terminal selecting or reselecting a resource includes:

[1011] In the resource selection or resource exclusion process, for at least part of the resources selected or reselected, a predetermined RSRP threshold is used to determine whether resource exclusion is required;

[1012] During resource selection or resource exclusion, setting the priority of at least part of the resources selected or reselected as the highest priority, or assuming that the priority of at least part of the resources selected or reselected is higher than the resources overlapping therewith;

[1013] Using at least part of the resources obtained by resource selection or reselection as at least part of the resources in the preferred resource set;

[1014] Determine at least part of the resources obtained by resource selection or reselection as resources in a candidate resource set of the second terminal.

[1015] Optionally, if the time interval between the location of the first resource and the first moment is less than or equal to the first duration, the target resource includes at least one of the following:

[1016] resources selected or reserved by the second terminal and located within the shared portion of the COT;

[1017] Resources obtained by the second terminal performing at least one of time domain migration and frequency domain migration on the first resource;

[1018] The second terminal obtains resources associated with the first resource.

[1019] Optionally, the target resource associated with the first resource is pre-configured, network configured, agreed upon by a protocol or indicated by the first terminal.

[1020] Optionally, the target resource is related to at least one of the following:

[1021] The geographical location or area ID of the second terminal;

[1022] a priority of transmission of the second terminal;

[1023] The ID of the second terminal.

[1024] Optionally, at least one of the time domain migration amount used for time domain migration of the first resource and the frequency domain migration amount used for frequency domain migration of the first resource is pre-configured, network configured, agreed upon by protocol or indicated by the first terminal.

[1025] Optionally, at least one of the time domain migration amount and the frequency domain migration amount is related to at least one of the following:

[1026] The geographical location or area ID of the second terminal;

[1027] a priority of transmission of the second terminal;

[1028] The ID of the second terminal.

[1029] Optionally, the sidelink transmission device 170 further includes:

[1030] The first sending module is configured to send first indication information on the target resource, where the first indication information includes at least one of the following:

[1031] The resource currently used by the second terminal is the target resource;

[1032] The resource currently used by the second terminal is obtained by adjusting the first resource, or is determined based on the first resource, or is associated with the first resource;

[1033] The reservation period of the resources currently used by the second terminal is 0ms;

[1034] The resources currently used by the second terminal have no reserved resources or the reserved resources are invalid;

[1035] Indicating that at least one of the currently used resource and the reserved resource of the currently used resource does not need to be considered during a sensing process, a resource detection process, a resource selection process, a preemption process, or a re-evaluation process;

[1036] Indicating that resource exclusion based on at least one of the currently used resource and the reserved resource of the currently used resource is not required in a sensing process, a resource detection process, a resource selection process, a preemption process, or a re-evaluation process;

[1037] Indicating that at least one of the currently used resource and a reserved resource of the currently used resource is a candidate resource or an available resource;

[1038] Indicating that the reserved resource of the currently used resource is a resource in the preferred resource set;

[1039] Indicates that the resource currently being used is disposable.

[1040] Optionally, the sidelink transmission device 170 further includes:

[1041] The second sending module is configured to send second indication information on a second resource, where the second resource is a resource after the target resource of the second terminal, and the second indication information includes at least one of the following:

[1042] The resource before the second resource is the target resource;

[1043] The resource before the second resource is obtained by adjusting the first resource, or is determined based on the first resource, or is associated with the first resource;

[1044] The reservation period of the resource before the second resource is 0ms;

[1045] There is no reserved resource or the reserved resource is invalid for the resource before the second resource;

[1046] Indicating that at least one of a resource before the second resource and a reserved resource of the resource before the second resource does not need to be considered during a sensing process, a resource detection process, a resource selection process, a preemption process, or a reassessment process;

[1047] Indicating that there is no need to exclude resources based on at least one of a resource before the second resource and a reserved resource of the resource before the second resource during a sensing process, a resource detection process, a resource selection process, a preemption process, or a reassessment process;

[1048] Indicate that at least one of a resource before the second resource and a reserved resource of the resource before the second resource is a candidate resource or an available resource;

[1049] Indicates that the reserved resource before the second resource is a resource in the preferred resource set.

[1050] Optionally, the sidelink transmission device 170 further includes:

[1051] A determination module is used to determine the time domain position of the reserved resource if the first resource is located before the starting point of the COT shared part and the target resource corresponding to the first resource is located in the COT shared part, and the time domain position of the reserved resource is determined according to the position of the first resource.

[1052] Optionally, the sidelink transmission device 170 further includes:

[1053] A third sending module is used to send third indication information on the target resource corresponding to the first resource, wherein the third indication information indicates a third resource, and the third resource is at least part of the resources selected or reserved by the second terminal that should have been indicated on the first resource, or the third resource is at least part of the authorized resources where the first resource is located.

[1054] Optionally, if there are multiple first resources, at least some of the target resources corresponding to or associated with the multiple first resources are continuous in time domain; or, the target resources corresponding to the first resources are continuous in time domain with a third resource, and the third resource is at least some of the resources selected or reserved by the second terminal that should have been indicated on the first resource, or the third resource is at least some of the authorized resources where the first resource is located.

[1055] Optionally, the sidelink transmission device 170 further includes:

[1056] The fourth sending module is used to inform the upper layer of at least one of the first resource, the target resource and the third resource, wherein the third resource is at least part of the resources selected or reserved by the second terminal that should have been indicated on the first resource, or the third resource is at least part of the authorized resources where the first resource is located.

[1057] Optionally, the first resource includes at least one of the following:

[1058] resources selected or reserved by the second terminal and located within the first time;

[1059] Resources selected or reserved by the second terminal that at least partially overlap with resources selected or reserved by the first terminal;

[1060] The time interval between the resources selected or reserved by the second terminal and the resources selected or reserved by the first terminal is less than or equal to the required duration or preset duration of LBT;

[1061] The resources selected or reserved by the second terminal overlap with the resources selected or reserved by the first terminal in time domain, and belong to the same RB set, interleaving set, resource pool or BWP as the resources selected or reserved by the first terminal;

[1062] The time interval between the resources selected or reserved by the second terminal and the resources selected or reserved by the first terminal is less than or equal to the required duration or preset duration of LBT, and the resources selected or reserved by the first terminal belong to the same RB set, interleaved set, resource pool or BWP;

[1063] The resources selected or reserved by the second terminal are located before the COT shared part;

[1064] resources selected or reserved by the second terminal and located within the shared portion of the COT;

[1065] The resources selected or reserved by the second terminal are located after the end point of the COT shared part;

[1066] Among the resources selected or reserved by the second terminal, the resources are located after the end point of the COT shared portion and the time interval between the resources and the end point of the COT shared portion is less than or equal to a preset threshold;

[1067] The resources selected or reserved by the second terminal are resources located after the start point of the COT shared part.

[1068] The sidelink transmission device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be another device other than a terminal. Exemplarily, the terminal may include but is not limited to the types of terminal 11 listed above, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

[1069] The sidelink transmission device provided in the embodiment of the present application can achieve Figure 7 The various processes implemented by the method embodiment and achieving the same technical effect are not described here to avoid repetition.

[1070] like Fig.18 As shown, the embodiment of the present application further provides a communication device 180, including a processor 181 and a memory 182, and the memory 182 stores a program or instruction that can be run on the processor 181. For example, when the communication device 180 is a first terminal, the program or instruction is executed by the processor 181 to implement the various steps of the above-mentioned sidelink transmission method embodiment executed by the first terminal, and can achieve the same technical effect. When the communication device 180 is a second terminal, the program or instruction is executed by the processor 181 to implement the various steps of the above-mentioned sidelink transmission method embodiment executed by the second terminal, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[1071] The embodiment of the present application also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the following Figure 6 or Figure 7The steps in the method embodiment shown. This terminal embodiment corresponds to the above-mentioned terminal side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this terminal embodiment and can achieve the same technical effect. Specifically, Fig.19 A schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[1072] The terminal 190 includes but is not limited to: a radio frequency unit 191, a network module 192, an audio output unit 193, an input unit 194, a sensor 195, a display unit 196, a user input unit 197, an interface unit 198, a memory 199 and at least some of the components of the processor 1910.

[1073] Those skilled in the art will appreciate that the terminal 190 may also include a power source (such as a battery) for supplying power to each component, and the power source may be logically connected to the processor 1910 through a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system. Fig.19 The terminal structure shown in the figure does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.

[1074] It should be understood that in the embodiment of the present application, the input unit 194 may include a graphics processing unit (GPU) 1941 and a microphone 1942, and the graphics processor 1941 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 196 may include a display panel 1961, and the display panel 1961 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 197 includes a touch panel 1971 and at least one of other input devices 1972. The touch panel 1971 is also called a touch screen. The touch panel 1971 may include two parts: a touch detection device and a touch controller. Other input devices 1972 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[1075] In the embodiment of the present application, after receiving downlink data from the network side device, the RF unit 191 can transmit the data to the processor 1910 for processing; in addition, the RF unit 191 can send uplink data to the network side device. Generally, the RF unit 191 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[1076] The memory 199 can be used to store software programs or instructions and various data. The memory 199 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 199 may include a volatile memory or a non-volatile memory. 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), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory 199 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[1077] The processor 1910 may include one or more processing units; optionally, the processor 1910 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 1910.

[1078] Wherein, when the terminal is the first terminal, the processor 1910 is used to determine a channel occupancy time COT shared part that can be shared with the second terminal, and all the resources selected or reserved by the second terminal are located in the COT shared part, or there are resources that meet the first condition among the resources selected or reserved by the second terminal; if there are resources that meet the first condition among the resources selected or reserved by the second terminal, perform a first operation to determine that the COT shared part can be shared by the second terminal;

[1079] The resources that meet the first condition include at least one of the following:

[1080] Resources located in the first place;

[1081] resources that at least partially overlap with resources selected or reserved by the first terminal;

[1082] Resources located before the shared portion of the COT;

[1083] Resources located after the shared portion of the COT;

[1084] Resources not located within the shared portion of the COT;

[1085] Resources whose time interval from the first moment is less than or equal to the first duration;

[1086] A resource located in the COT shared portion and having a time interval with a start point of the COT shared portion greater than or equal to a second duration;

[1087] Resources whose time interval with the start point of the COT or the start point of the shared part of the COT or the end point of the shared part of the COT is less than or equal to a preset threshold;

[1088] The first time is one of the following, or the sum of one of the following and the second duration:

[1089] the starting point of the COT;

[1090] The moment when the COT shares information;

[1091] The time when the second terminal obtains the COT shared information;

[1092] The moment when the second terminal finishes decoding the COT shared information;

[1093] The end of the first time;

[1094] The starting point of the shared portion of the COT;

[1095] The first duration includes the sum of one or more of the following:

[1096] The length of time required for channel or signal processing;

[1097] The time required for decoding;

[1098] The length of time required to select or reselect resources;

[1099] Preparation time;

[1100] Processing time;

[1101] The time required to generate the data packet;

[1102] Physical side link control channel PSCCH coding time;

[1103] Physical side link shared channel PSSCH coding time;

[1104] The time required to generate or encode the SCI;

[1105] The time required to listen first and then send LBT;

[1106] Preset duration;

[1107] The time required to extend the cyclic prefix CPE;

[1108] The second duration includes the sum of one or more of the following: the duration required for signal processing, the duration required for decoding, the preset duration, the duration required for LBT, and the duration required for CPE;

[1109] The first time is the time when the first terminal sends, or the time when the resources are reserved or selected by the first terminal.

[1110] In an embodiment of the present application, by determining a shared portion of the channel occupancy time COT that can be shared with the second terminal, all resources selected or reserved by the second terminal are located within the COT shared portion, or, if there are resources satisfying the first condition among the resources selected or reserved by the second terminal, the first terminal performs a first operation to determine that the COT shared portion can be shared by the second terminal, so that the second terminal can share the COT of the first terminal as much as possible, reducing the probability that the COT is snatched away by other terminals and causing the second terminal to be unable to use the COT, or reducing the probability that the second terminal must perform type 1 LBT to avoid BLT failure, thereby improving the utilization efficiency of the COT.

[1111] Wherein, when the terminal is the second terminal, the processor 1910 is used to obtain a COT shared part that can be shared by the first terminal to the second terminal, and all the resources selected or reserved by the second terminal are located in the COT shared part, or, there are resources that meet the first condition among the resources selected or reserved by the second terminal; if there are resources that meet the first condition among the resources selected or reserved by the second terminal, the second terminal performs a fourth operation to determine that the COT shared part can be shared by the second terminal;

[1112] The resources that meet the first condition include at least one of the following:

[1113] Resources located in the first place;

[1114] resources that at least partially overlap with resources selected or reserved by the first terminal;

[1115] Resources located before the shared portion of the COT;

[1116] Resources located after the shared portion of the COT;

[1117] Resources not located within the shared portion of the COT;

[1118] Resources whose time interval from the first moment is less than or equal to the first duration;

[1119] A resource located in the COT shared portion and having a time interval with a start point of the COT shared portion greater than or equal to a second duration;

[1120] Resources whose time interval with the start point of the COT or the start point of the shared part of the COT or the end point of the shared part of the COT is less than or equal to a preset threshold;

[1121] The first time is one of the following, or the sum of one of the following and the second duration:

[1122] the starting point of the COT;

[1123] The moment when the COT shares information;

[1124] The time when the second terminal obtains the COT shared information;

[1125] The moment when the second terminal finishes decoding the COT shared information;

[1126] The end of the first time;

[1127] The starting point of the shared portion of the COT;

[1128] The first duration includes the sum of one or more of the following:

[1129] The length of time required for channel or signal processing;

[1130] The time required for decoding;

[1131] The length of time required to select or reselect resources;

[1132] Preparation time;

[1133] Processing time;

[1134] The time required to generate the data packet;

[1135] PSCCH coding time;

[1136] PSSCH coding time;

[1137] The time required to generate or encode the SCI;

[1138] The duration of LBT;

[1139] Preset duration;

[1140] The length of time required for CPE;

[1141] The second duration includes the sum of one or more of the following: the duration required for signal processing, the duration required for decoding, the preset duration, the duration required for LBT, and the duration required for CPE;

[1142] The first time is the time when the first terminal sends, or the time when the resources are reserved or selected by the first terminal.

[1143] In an embodiment of the present application, by obtaining a shared portion of the channel occupancy time COT that can be shared with the second terminal, all resources selected or reserved by the second terminal are located within the COT shared portion, or, if there are resources that meet the first condition among the resources selected or reserved by the second terminal, the second terminal performs a fourth operation to determine that the COT shared portion can be shared by the second terminal, so that the second terminal can share the COT of the first terminal as much as possible, reducing the probability that the COT is snatched away by other terminals and causing the second terminal to be unable to use the COT, or reducing the probability that the second terminal must perform type 1 LBT to avoid BLT failure, thereby improving the utilization efficiency of the COT.

[1144] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the method embodiment and achieve the same or corresponding technical effect. To avoid repetition, it will not be repeated here.

[1145] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned sidelink transmission method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[1146] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[1147] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned sidelink transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[1148] 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.

[1149] The embodiment of the present application further provides a computer program / program product, which is stored in a storage medium, and is executed by at least one processor to implement the various processes of the above-mentioned sidelink transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[1150] An embodiment of the present application also provides a communication system, including: a first terminal and a second terminal, wherein the first terminal can be used to execute the steps of the sidelink transmission method executed by the first terminal as above, and the second terminal can be used to execute the steps of the sidelink transmission method executed by the second terminal as above.

[1151] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[1152] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, disk, CD, etc.), including several instructions to enable a terminal or a network-side device to execute the methods described in each embodiment of the present application.

[1153] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of the present application and the scope of protection of the claims, and these implementation methods are all within the protection of the present application.

Claims

1. A sidelink transmission method, characterized in that: include: The first terminal determines a channel occupation time COT shared part that can be shared with the second terminal, and all resources selected or reserved by the second terminal are located in the COT shared part, or there are resources that meet the first condition among the resources selected or reserved by the second terminal; If there is a resource satisfying the first condition among the resources selected or reserved by the second terminal, the first terminal performs a first operation to determine that the COT shared portion can be shared by the second terminal; The resources that meet the first condition include at least one of the following: Resources located in the first place; resources that at least partially overlap with resources selected or reserved by the first terminal; Resources located before the shared portion of the COT; Resources located after the shared portion of the COT; Resources not located within the shared portion of the COT; Resources whose time interval from the first moment is less than or equal to the first duration; A resource located in the COT shared portion and having a time interval with a start point of the COT shared portion greater than or equal to a second duration; Resources whose time interval with the start point of the COT or the start point of the shared part of the COT or the end point of the shared part of the COT is less than or equal to a preset threshold; The first time is one of the following, or the sum of one of the following and the second duration: the starting point of the COT; The moment when the COT shares information; The time when the second terminal obtains the COT shared information; The moment when the second terminal finishes decoding the COT shared information; The end of the first time; The starting point of the shared portion of the COT; The first duration includes the sum of one or more of the following: The length of time required for channel or signal processing; The time required for decoding; The length of time required to select or reselect resources; Preparation time; Processing time; The time required to generate the data packet; Physical side link control channel PSCCH coding time; Physical side link shared channel PSSCH coding time; The time required to generate or encode the SCI; The time required to listen first and then send LBT; Preset duration; The time required to extend the cyclic prefix CPE; The second duration includes the sum of one or more of the following: the duration required for signal processing, the duration required for decoding, the preset duration, the duration required for LBT, and the duration required for CPE; The first time is the time when the first terminal sends, or the time when the resources are reserved or selected by the first terminal.

2. The method according to claim 1, characterized in that The first operation includes at least one of the following: Assuming that the second terminal transmits on the target resource; Receive on the target resource; not using, discarding or canceling reception of a fourth resource among the resources selected or reserved by the second terminal; instructing the second terminal to use the target resource for transmission; instructing the second terminal not to use, discard or cancel transmission on the fourth resource; Determine at least one of the location information of the COT shared portion and the location information of the COT shared information; in, The fourth resource includes at least one of the following: a resource located within the first time, a resource at least partially overlapping with a resource selected or reserved by the first terminal, a resource located before the COT shared portion, a resource whose time interval with the first moment is less than or equal to the first duration, a resource not located within the COT shared portion, a resource after the COT, and a resource whose time interval with the third moment is greater than or equal to the second duration; Wherein, the third moment is the end point of the COT shared part or the end point of the COT; The target resource includes at least one of the following: a resource obtained after adjusting the first resource; a resource determined based on the first resource; Resources associated with the first resource; Resources located after the first time; resources located within the shared portion of the COT; Resources located between the start point of the shared portion of the COT and the end point of the COT; resources starting from the end of said first time or the start of said COT shared portion; a resource determined based on an end point of the first time or a start point of the shared portion of the COT; A resource whose time interval with an end point of the first time or the COT shared part is less than or equal to a second duration.

3. The method according to claim 2, characterized in that The instructing the second terminal to use the target resource for transmission includes at least one of the following: instructing the second terminal to select or reselect resources to obtain the target resource; instructing the second terminal to perform at least one of time domain migration and frequency domain migration on the first resource to obtain the target resource; indicating a migration amount, wherein the migration amount includes at least one of a time domain migration amount and a frequency domain migration amount; indicating the target resource; Indicates the association relationship between the first resource and the target resource.

4. The method according to claim 2 or 3, characterized in that: When there are multiple second terminals, different second terminals correspond to different target resources; and the target resource is related to at least one of the following: The geographical location or area ID of the second terminal; a priority of transmission of the second terminal; The ID of the second terminal.

5. The method according to claim 3, characterized in that: When there are multiple second terminals, different second terminals correspond to different migration amounts; and the migration amounts corresponding to different second terminals are related to at least one of the following: The geographical location or area ID of the second terminal; a priority of transmission of the second terminal; The ID of the second terminal.

6. The method according to claim 2, characterized in that Determining at least one of the location of the COT shared portion and the location of the COT shared information comprises at least one of the following: Determine a first offset between a start point of the COT shared portion of the second terminal and a time point of the COT shared information; Determine a second offset between a start point of the COT shared portion of the second terminal and a start point of the COT; The determined starting point of the COT shared portion is no earlier than the resources selected or reserved by the second terminal; The first offset satisfies at least one of the following: The first offset is less than or equal to the time interval between the first moment and the resource selected or reserved by the second terminal; The first offset is less than or equal to the time interval between the first moment and the resource selected or reserved by the second terminal minus at least one of the second durations; The second offset satisfies at least one of the following: The second offset is less than or equal to a first sum value, the first sum value being the sum of: a time interval between the first moment and the resource selected or reserved by the second terminal, and a time interval between the first moment and the start point of the COT; The second offset is less than or equal to a second sum value, which is the sum of the following two: the time interval between the first moment and the resources selected or reserved by the second terminal minus the second duration, and the time interval between the first moment and the starting point of the COT.

7. The method according to claim 1, characterized in that Before the first terminal determines the COT shared part, the following further includes: Selecting a resource, wherein the selected resource is earlier than or located at a second time, or a time interval between the selected resource and a resource selected or reserved by the second terminal is greater than or equal to a first duration; The second moment is the moment at which the resource is selected or reserved by the second terminal minus at least one of the following: The length of time required for channel or signal processing; The time required for decoding; The length of time required to select or reselect resources; Preparation time; Processing time; The time required to generate the data packet; PSCCH coding time; PSSCH coding time; The time required to generate or encode the SCI.

8. The method according to claim 7, characterized in that The selected resources include: Determine resource selection window or candidate resources; The resource selection window is earlier than or located at the second moment, or the time interval between the resource selection window and the resource selected or reserved by the second terminal is greater than or equal to a third duration; or The latest candidate resource among the candidate resources is earlier than or located at the second time, or the time interval between the latest candidate resource among the candidate resources and the resource selected or reserved by the second terminal is greater than or equal to the first duration.

9. The method according to claim 7 or 8, characterized in that: The selected or reselected resource is a resource of the COT shared information.

10. The method according to claim 2, characterized in that Also includes: The first terminal receives first indication information sent by the second terminal on the target resource; Perform a second operation according to the first indication information; The first indication information includes at least one of the following: The resource currently used by the second terminal is the target resource; The resource currently used by the second terminal is obtained by adjusting the first resource, or is determined based on the first resource, or is associated with the first resource; The reservation period of the resources currently used by the second terminal is 0ms; The resources currently used by the second terminal have no reserved resources or the reserved resources are invalid; Indicating that at least one of the currently used resource and the reserved resource of the currently used resource does not need to be considered during a sensing process, a resource detection process, a resource selection process, a preemption process, or a re-evaluation process; Indicating that resource exclusion based on at least one of the currently used resource and the reserved resource of the currently used resource is not required in a sensing process, a resource detection process, a resource selection process, a preemption process, or a re-evaluation process; Indicating that at least one of the currently used resource and a reserved resource of the currently used resource is a candidate resource or an available resource; Indicating that the reserved resource of the currently used resource is a resource in the preferred resource set; Indicates that the resource currently being used is disposable; The second operation includes at least one of the following: At least one of the currently used resource and the reserved resource of the currently used resource is not considered in the sensing process, the resource detection process, the resource selection process, the preemption process, or the re-evaluation process; In a sensing process, a resource detection process, a resource selection process, a preemption process, or a re-evaluation process, resource exclusion is not performed based on at least one of the currently used resource and the reserved resource of the currently used resource; Assuming that at least one of the currently used resource and the reserved resource of the currently used resource is a candidate resource or an available resource; Selecting at least a portion of at least one of the currently used resource and a reserved resource of the currently used resource; Ignore the reserved resources of the currently used resources; Assume that the reserved resources of the currently used resources are invalid; It is assumed that the reservation period of the reserved resources of the currently used resources is 0 ms.

11. The method according to claim 2, characterized in that Also includes: The first terminal receives second indication information sent by the second terminal on a second resource; The second resource is a resource subsequent to the target resource of the second terminal; The first terminal performs a third operation according to the second indication information; The second indication information includes at least one of the following: The resource before the second resource is the target resource; The resource before the second resource is obtained by adjusting the first resource, or is determined based on the first resource, or is associated with the first resource; The reservation period of the resource before the second resource is 0ms; There is no reserved resource or the reserved resource is invalid for the resource before the second resource; Indicating that at least one of a resource before the second resource and a reserved resource of the resource before the second resource does not need to be considered during a sensing process, a resource detection process, a resource selection process, a preemption process, or a reassessment process; Indicating that there is no need to exclude resources based on at least one of a resource before the second resource and a reserved resource of the resource before the second resource during a sensing process, a resource detection process, a resource selection process, a preemption process, or a reassessment process; Indicate that at least one of a resource before the second resource and a reserved resource of the resource before the second resource is a candidate resource or an available resource; Indicating that the reserved resource of the resource before the second resource is a resource in the preferred resource set; The third operation includes at least one of the following: At least one of the resource before the second resource and the reserved resource of the resource before the second resource is not considered in the sensing process or the resource detection process or the resource selection process or the preemption process or the re-evaluation process; In a sensing process, a resource detection process, a resource selection process, a preemption process, or a re-evaluation process, resource exclusion is not performed based on at least one of a resource before the second resource and a reserved resource of the resource before the second resource; Assuming that at least one of a resource before the second resource and a reserved resource of the resource before the second resource is a candidate resource or an available resource; selecting at least a portion of at least one of a resource before the second resource and a reserved resource of the resource before the second resource; Ignore reserved resources of resources before the second resource; Assume that the reserved resources of the resources before the second resource are invalid; Assume that the reservation period of the reserved resources before the second resource is 0 ms.

12. The method according to claim 2, 3, 10 or 11, characterized in that The first resource includes at least one of the following: resources selected or reserved by the second terminal and located within the first time; Resources selected or reserved by the second terminal that at least partially overlap with resources selected or reserved by the first terminal; resources selected or reserved by the second terminal whose time interval with resources selected or reserved by the first terminal is less than or equal to the required duration or preset duration of LBT; The resources selected or reserved by the second terminal overlap with the resources selected or reserved by the first terminal in the time domain, and belong to the same resource block RB set, interleaving set, resource pool or BWP as the resources selected or reserved by the first terminal; The time interval between the resources selected or reserved by the second terminal and the resources selected or reserved by the first terminal is less than or equal to the required duration or preset duration of LBT, and the resources selected or reserved by the first terminal belong to the same RB set, interleaved set, resource pool or BWP; The resources selected or reserved by the second terminal are located before the COT shared part; resources selected or reserved by the second terminal and located within the shared portion of the COT; Resources located after the end point of the COT shared portion among the resources selected or reserved by the second terminal; Among the resources selected or reserved by the second terminal, the resources are located after the end point of the COT shared portion and the time interval between the resources and the end point of the COT shared portion is less than or equal to a preset threshold; The resources selected or reserved by the second terminal are resources located after the start point of the COT shared part.

13. The method according to claim 2, characterized in that If there are multiple first resources, at least some of the target resources corresponding to or associated with the multiple first resources are continuous in time domain; or The target resource corresponding to the first resource is continuous in time domain with the third resource, and the third resource is at least a part of the authorized resource where the first resource is located.

14. The method according to claim 1, characterized in that The first terminal performs a first operation, including: When the second condition is met, the first terminal determines a COT shared portion that can be shared with the second terminal; The second condition includes at least one of the following: The first terminal is configured or pre-configured or indicated to be able to or must perform the first operation; The first terminal is capable of continuing transmission after the COT shared portion; The first terminal has selected or reserved resources after the COT shared part; The first terminal is capable of modifying the MCS; The first terminal is capable of using a specific MCS or a higher MCS; The resources selected or reserved for the first terminal are compatible with a specific MCS or a higher MCS; The priority corresponding to the resource selected or reserved by the second terminal is higher than or equal to the first preset threshold; The priority corresponding to the resource selected or reserved by the second terminal is lower than or equal to the second preset threshold; The transmission corresponding to the second terminal is a specific transmission type; The resources selected or reserved by the second terminal are used to transmit a specific message.

15. A sidelink transmission method, characterized in that: include: The second terminal obtains a COT shared portion that can be shared by the first terminal with the second terminal, and all resources selected or reserved by the second terminal are located in the COT shared portion, or resources selected or reserved by the second terminal include resources that meet the first condition; If there is a resource satisfying the first condition among the resources selected or reserved by the second terminal, the second terminal performs a fourth operation to determine that the COT shared portion can be shared by the second terminal; The resources that meet the first condition include at least one of the following: Resources located in the first place; resources that at least partially overlap with resources selected or reserved by the first terminal; Resources located before the shared portion of the COT; Resources located after the shared portion of the COT; Resources not located within the shared portion of the COT; Resources whose time interval from the first moment is less than or equal to the first duration; A resource located in the COT shared portion and having a time interval with a start point of the COT shared portion greater than or equal to a second duration; Resources whose time interval with the start point of the COT or the start point of the shared part of the COT or the end point of the shared part of the COT is less than or equal to a preset threshold; The first time is one of the following, or the sum of one of the following and the second duration: the starting point of the COT; The moment when the COT shares information; The time when the second terminal obtains the COT shared information; The moment when the second terminal finishes decoding the COT shared information; The end of the first time; The starting point of the shared portion of the COT; The first duration includes the sum of one or more of the following: The length of time required for channel or signal processing; The time required for decoding; The length of time required to select or reselect resources; Preparation time; Processing time; The time required to generate the data packet; PSCCH coding time; PSSCH coding time; The time required to generate or encode the SCI; The duration of LBT; Preset duration; The length of time required for CPE; The second duration includes the sum of one or more of the following: the duration required for signal processing, the duration required for decoding, the preset duration, the duration required for LBT, and the duration required for CPE; The first time is the time when the first terminal sends, or the time when the resources are reserved or selected by the first terminal.

16. The method according to claim 15, characterized in that The fourth operation includes at least one of the following: Use the target resource for the transfer; Assume that the first terminal receives on the target resource; not using, canceling or discarding a fourth resource among the resources selected or reserved by the second terminal; The fourth resource includes at least one of the following: a resource located within the first time, a resource at least partially overlapping with a resource selected or reserved by the first terminal, a resource located before the COT shared portion, a resource whose time interval with the first moment is less than or equal to the first duration, a resource not located within the COT shared portion, a resource after the COT, and a resource whose time interval with the third moment is greater than or equal to the second duration; The first time is one of the following, or the sum of one of the following and the second duration: the starting point of the COT; The moment when the COT shares information; The time when the second terminal obtains the COT shared information; The moment when the second terminal finishes decoding the COT shared information; The end of the first time; The starting point of the shared portion of the COT; The first duration includes the sum of one or more of the following: The length of time required for channel or signal processing; The time required for decoding; The length of time required to select or reselect resources; Preparation time; Processing time; The time required to generate the data packet; PSCCH coding time; PSSCH coding time; The time required to generate or encode the SCI; The duration of LBT; Preset duration; The length of time required for CPE; The first time is the time when the first terminal sends, or the time when the resources reserved or selected by the first terminal are located; The second duration is the sum of at least one or more of the following: the duration required for signal processing, the duration required for decoding, the preset duration, the duration required for LBT, and the duration required for CPE; Wherein, the third moment is the end point of the COT shared part or the end point of the COT; The target resource includes at least one of the following: a resource obtained after adjusting the first resource; a resource determined based on the first resource; Resources associated with the first resource; Resources located after the first time; resources located within the shared portion of the COT; Resources located between the start point of the shared portion of the COT and the end point of the COT; resources starting from the end of said first time or the start of said COT shared portion; a resource determined based on an end point of the first time or a start point of the shared portion of the COT; A resource whose time interval with an end point of the first time or the COT shared part is less than or equal to a second duration.

17. The method according to claim 16, characterized in that If the time interval between the location of the first resource and the first moment is greater than or equal to the first duration, the target resource includes at least one of the following: The resources or candidate resources obtained by the second terminal through resource selection or reselection; Resources obtained by the second terminal performing at least one of time domain migration and frequency domain migration on the first resource; The second terminal obtains resources associated with the first resource.

18. The method according to claim 17, characterized in that The second terminal selecting or reselecting resources includes: In the resource selection or resource exclusion process, for at least part of the resources selected or reselected, a predetermined RSRP threshold is used to determine whether resource exclusion is required; During resource selection or resource exclusion, setting the priority of at least part of the resources selected or reselected as the highest priority, or assuming that the priority of at least part of the resources selected or reselected is higher than the resources overlapping therewith; Using at least part of the resources obtained by resource selection or reselection as at least part of the resources in the preferred resource set; Determine at least part of the resources obtained by resource selection or reselection as resources in a candidate resource set of the second terminal.

19. The method according to claim 16, characterized in that If the time interval between the location of the first resource and the first moment is less than or equal to the first duration, the target resource includes at least one of the following: resources selected or reserved by the second terminal and located within the shared portion of the COT; Resources obtained by the second terminal performing at least one of time domain migration and frequency domain migration on the first resource; The second terminal obtains resources associated with the first resource.

20. The method according to claim 17 or 19, characterized in that The target resource associated with the first resource is pre-configured, network configured, agreed upon by a protocol or indicated by the first terminal.

21. The method according to claim 17 or 19, characterized in that At least one of the time domain migration amount used for time domain migration of the first resource and the frequency domain migration amount used for time domain migration of the first resource is pre-configured, network configured, agreed upon by protocol or indicated by the first terminal.

22. The method according to claim 16, characterized in that Also includes: The second terminal sends first indication information on the target resource, where the first indication information includes at least one of the following: The resource currently used by the second terminal is the target resource; The resource currently used by the second terminal is obtained by adjusting the first resource, or is determined based on the first resource, or is associated with the first resource; The reservation period of the resources currently used by the second terminal is 0ms; The resources currently used by the second terminal have no reserved resources or the reserved resources are invalid; Indicating that at least one of the currently used resource and the reserved resource of the currently used resource does not need to be considered during a sensing process, a resource detection process, a resource selection process, a preemption process, or a re-evaluation process; Indicating that resource exclusion based on at least one of the currently used resource and the reserved resource of the currently used resource is not required in a sensing process, a resource detection process, a resource selection process, a preemption process, or a re-evaluation process; Indicating that at least one of the currently used resource and a reserved resource of the currently used resource is a candidate resource or an available resource; Indicating that the reserved resource of the currently used resource is a resource in the preferred resource set; Indicates that the resource currently being used is disposable.

23. The method according to claim 16, characterized in that Also includes: The second terminal sends second indication information in a second resource, where the second resource is a resource after the target resource of the second terminal, and the second indication information includes at least one of the following: The resource before the second resource is the target resource; The resource before the second resource is obtained by adjusting the first resource, or is determined based on the first resource, or is associated with the first resource; The reservation period of the resource before the second resource is 0ms; There is no reserved resource or the reserved resource is invalid for the resource before the second resource; Indicating that at least one of a resource before the second resource and a reserved resource of the resource before the second resource does not need to be considered during a sensing process, a resource detection process, a resource selection process, a preemption process, or a re-evaluation process; Indicating that there is no need to exclude resources based on at least one of a resource before the second resource and a reserved resource of the resource before the second resource during a sensing process, a resource detection process, a resource selection process, a preemption process, or a reassessment process; Indicate that at least one of a resource before the second resource and a reserved resource of the resource before the second resource is a candidate resource or an available resource; Indicates that the reserved resource before the second resource is a resource in the preferred resource set.

24. The method according to claim 16, characterized in that Also includes: If the first resource is located before the starting point of the COT shared part, and the target resource corresponding to the first resource is located in the COT shared part, the second terminal determines the time domain position of the reserved resource, and the time domain position of the reserved resource is determined according to the position of the first resource.

25. The method according to claim 16, characterized in that Also includes: The second terminal sends third indication information on the target resource corresponding to the first resource, and the third indication information indicates a third resource. The third resource is at least part of the resource that should have been indicated on the first resource, or the third resource is at least part of the authorized resource where the first resource is located.

26. The method according to claim 16, characterized in that If there are multiple first resources, at least some of the target resources corresponding to or associated with the multiple first resources are continuous in time domain; or The target resource corresponding to the first resource is continuous in time domain with the third resource, and the third resource is at least a part of the authorized resource where the first resource is located.

27. The method according to claim 16, characterized in that Also includes: The second terminal notifies a higher layer of at least one of the first resource, the target resource and the third resource, The third resource is at least part of the authorized resources where the first resource is located.

28. The method of claim 16, 17, 19, 20, 21, 22, 23, 24, 26 or 26, wherein: The first resource includes at least one of the following: resources selected or reserved by the second terminal and located within the first time; Resources selected or reserved by the second terminal that at least partially overlap with resources selected or reserved by the first terminal; The time interval between the resources selected or reserved by the second terminal and the resources selected or reserved by the first terminal is less than or equal to the required duration or preset duration of LBT; The resources selected or reserved by the second terminal overlap with the resources selected or reserved by the first terminal in time domain, and belong to the same RB set, interleaving set, resource pool or BWP as the resources selected or reserved by the first terminal; The time interval between the resources selected or reserved by the second terminal and the resources selected or reserved by the first terminal is less than or equal to the required duration or preset duration of LBT, and the resources selected or reserved by the first terminal belong to the same RB set, interleaved set, resource pool or BWP; The resources selected or reserved by the second terminal are located before the COT shared part; resources selected or reserved by the second terminal and located within the shared portion of the COT; Resources located after the end point of the COT shared portion among the resources selected or reserved by the second terminal; Among the resources selected or reserved by the second terminal, the resources are located after the end point of the COT shared portion and the time interval between the resources and the end point of the COT shared portion is less than or equal to a preset threshold; The resources selected or reserved by the second terminal are resources located after the start point of the COT shared part.

29. A sidelink transmission device, characterized in that: include: A determination module, configured to determine a channel occupation time COT shared portion that can be shared with the second terminal, wherein all resources selected or reserved by the second terminal are located within the COT shared portion, or resources selected or reserved by the second terminal include resources that meet the first condition; A first execution module, configured to execute a first operation to determine that the COT shared portion can be shared by the second terminal if there is a resource satisfying a first condition among the resources selected or reserved by the second terminal; The resources that meet the first condition include at least one of the following: Resources located in the first place; resources that at least partially overlap with resources selected or reserved by the first terminal; Resources located before the shared portion of the COT; Resources located after the shared portion of the COT; Resources not located within the shared portion of the COT; Resources whose time interval from the first moment is less than or equal to the first duration; A resource located in the COT shared portion and having a time interval with a start point of the COT shared portion greater than or equal to a second duration; Resources whose time interval with the start point of the COT or the start point of the shared part of the COT or the end point of the shared part of the COT is less than or equal to a preset threshold; The first time is one of the following, or the sum of one of the following and the second duration: the starting point of the COT; The moment when the COT shares information; The time when the second terminal obtains the COT shared information; The moment when the second terminal finishes decoding the COT shared information; The end of the first time; The starting point of the shared portion of the COT; The first duration includes the sum of one or more of the following: The length of time required for channel or signal processing; The time required for decoding; The length of time required to select or reselect resources; Preparation time; Processing time; The time required to generate the data packet; Physical side link control channel PSCCH coding time; Physical side link shared channel PSSCH coding time; The time required to generate or encode the SCI; The time required to listen first and then send LBT; Preset duration; The time required to extend the cyclic prefix CPE; The second duration includes the sum of one or more of the following: the duration required for signal processing, the duration required for decoding, the preset duration, the duration required for LBT, and the duration required for CPE; The first time is the time when the first terminal sends, or the time when the resources are reserved or selected by the first terminal.

30. A sidelink transmission device, characterized in that: include: an acquisition module, configured to acquire a COT shared portion that can be shared by the first terminal with the second terminal, wherein all resources selected or reserved by the second terminal are located within the COT shared portion, or resources selected or reserved by the second terminal include resources that meet a first condition; A second execution module, configured to, if there is a resource satisfying the first condition among the resources selected or reserved by the second terminal, cause the second terminal to perform a fourth operation to determine that the COT shared portion can be shared by the second terminal; The resources that meet the first condition include at least one of the following: Resources located in the first place; resources that at least partially overlap with resources selected or reserved by the first terminal; Resources located before the shared portion of the COT; Resources located after the shared portion of the COT; Resources not located within the shared portion of the COT; Resources whose time interval from the first moment is less than or equal to the first duration; A resource located in the COT shared portion and having a time interval with a start point of the COT shared portion greater than or equal to a second duration; Resources whose time interval with the start point of the COT or the start point of the shared part of the COT or the end point of the shared part of the COT is less than or equal to a preset threshold; The first time is one of the following, or the sum of one of the following and the second duration: the starting point of the COT; The moment when the COT shares information; The time when the second terminal obtains the COT shared information; The moment when the second terminal finishes decoding the COT shared information; The end of the first time; The starting point of the shared portion of the COT; The first duration includes the sum of one or more of the following: The length of time required for channel or signal processing; The time required for decoding; The length of time required to select or reselect resources; Preparation time; Processing time; The time required to generate the data packet; PSCCH coding time; PSSCH coding time; The time required to generate or encode the SCI; The duration of LBT; Preset duration; The length of time required for CPE; The second duration includes the sum of one or more of the following: the duration required for signal processing, the duration required for decoding, the preset duration, the duration required for LBT, and the duration required for CPE; The first time is the time when the first terminal sends, or the time when the resources are reserved or selected by the first terminal.

31. A terminal, characterized in that: The method comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the sidelink transmission method according to any one of claims 1 to 14 are implemented, or when the program or instruction is executed by the processor, the steps of the sidelink transmission method according to any one of claims 15 to 28 are implemented.

32. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, it implements the sidelink transmission method as described in any one of claims 1 to 14, or implements the steps of the sidelink transmission method as described in any one of claims 15 to 28.

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