Resource selection method and apparatus, terminal, and storage medium

Abstract

The application discloses a resource selection method and device, a terminal and a storage medium, and belongs to the technical field of communication. The resource selection method of the application embodiment comprises the following steps: a first terminal performs a target operation on resources on N1 first carriers based on first information to determine target resources on one or more than two first carriers. The target operation comprises at least one of the following: resource selection, resource reselection, resource reevaluation and resource preemption. The first information is information of target candidate resources on the N1 first carriers. The target candidate resources overlap with a first reference resource, and / or a physical sidelink feedback channel (PSFCH) corresponding to the target candidate resources overlaps with a second reference resource.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to a resource selection method, apparatus, terminal, and storage medium. Background Technology

[0002] Carrier aggregation (CA) combines two or more component carriers (CCs) together to support a larger transmission bandwidth (up to 100MHz), which can solve the problem of scarcity of large-bandwidth continuous spectrum.

[0003] In New Radio (NR) Sidelink (SL) carrier aggregation applications, a User Equipment (UE) may simultaneously transmit the Physical Sidelink Shared Channel (PSSCH) and receive the Physical Sidelink Feedback Channel (PSFCH) or PSSCH on multiple carrier elements within a frequency band, which leads to transmit-receive conflicts between different carriers. Summary of the Invention

[0004] This application provides a resource selection method, apparatus, terminal, and storage medium that can resolve the problem of transmission and reception conflicts between different carriers.

[0005] Firstly, a resource selection method is provided, which includes:

[0006] Based on the first information, the first terminal performs a target operation on the resources on N1 first carriers to determine one or more target resources on the first carriers.

[0007] The target operation includes at least one of the following: resource selection, resource reselection, resource reassessment, and resource preemption; the first information is information on target candidate resources on N1 first carriers; the target candidate resources overlap with the first reference resources, and / or the physical sidelink feedback channel (PSFCH) corresponding to the target candidate resources overlaps with the second reference resources;

[0008] The first reference resource includes at least one of the following:

[0009] The first terminal's first resources on N2 second carriers;

[0010] The PSFCH resources corresponding to the reserved resources of the first terminal on N3 third carriers;

[0011] The second terminal has a first transmission resource on N4 fourth carriers, and the second terminal is the side link SL data receiving end corresponding to the target resource;

[0012] The second terminal detects the second transmission resources of the third terminal on N5 fifth carriers;

[0013] The second reference resource includes at least one of the following:

[0014] The second resources of the first terminal on N6 sixth carriers;

[0015] The first terminal has reserved resources on N7 seventh carriers.

[0016] Secondly, a resource selection device is provided, the device comprising:

[0017] The determination module is used to perform target operations on resources on N1 first carriers based on first information, and determine target resources on one or more first carriers;

[0018] The target operation includes at least one of the following: resource selection, resource reselection, resource reassessment, and resource preemption; the first information is information on target candidate resources on N1 first carriers; the target candidate resources overlap with the first reference resources, and / or the physical sidelink feedback channel (PSFCH) corresponding to the target candidate resources overlaps with the second reference resources;

[0019] The first reference resource includes at least one of the following:

[0020] The first terminal has its first resources on N2 second carriers;

[0021] The PSFCH resources corresponding to the reserved resources of the first terminal on N3 third carriers;

[0022] The second terminal has a first transmission resource on N4 fourth carriers, and the second terminal is the side link SL data receiving end corresponding to the target resource;

[0023] The second terminal detects the second transmission resources of the third terminal on N5 fifth carriers;

[0024] The second reference resource includes at least one of the following:

[0025] The second resources of the first terminal on N6 sixth carriers;

[0026] The first terminal has reserved resources on the N7 seventh carrier.

[0027] Thirdly, a terminal is provided, comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method described in the first aspect.

[0028] Fourthly, a first terminal is provided, including a processor and a communication interface; wherein the processor is used to perform target operations on resources on N1 first carriers based on first information, to determine target resources on one or more first carriers;

[0029] The target operation includes at least one of the following: resource selection, resource reselection, resource reassessment, and resource preemption; the first information is information on target candidate resources on N1 first carriers; the target candidate resources overlap with the first reference resources, and / or the physical sidelink feedback channel (PSFCH) corresponding to the target candidate resources overlaps with the second reference resources;

[0030] The first reference resource includes at least one of the following:

[0031] The first terminal's first resources on N2 second carriers;

[0032] The PSFCH resources corresponding to the reserved resources of the first terminal on N3 third carriers;

[0033] The second terminal has a first transmission resource on N4 fourth carriers, and the second terminal is the side link SL data receiving end corresponding to the target resource;

[0034] The second terminal detects the second transmission resources of the third terminal on N5 fifth carriers;

[0035] The second reference resource includes at least one of the following:

[0036] The second resources of the first terminal on N6 sixth carriers;

[0037] The first terminal has reserved resources on N7 seventh carriers.

[0038] Fifthly, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect.

[0039] In a sixth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being used to run programs or instructions to implement the method as described in the first aspect.

[0040] In a seventh aspect, a computer program / program product is provided, the computer program / program product being stored in a storage medium, the computer program / program product being executed by at least one processor to perform the steps of the method as described in the first aspect.

[0041] In this embodiment, when the target candidate resource overlaps with the first reference resource, and / or the PSFCH corresponding to the target candidate resource overlaps with the second reference resource, the first terminal can perform target operations on the resources on the N1 first carriers based on the first information of the target candidate resources on the N1 first carriers to determine the target resources on one or more first carriers. This embodiment considers overlapping target candidate resources when determining the target resources on the first carriers, thereby resolving the transmit / receive conflict problem on different carriers in carrier aggregation scenarios and improving SL transmission performance. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of a wireless communication system to which embodiments of this application can be applied;

[0043] Figure 2 This is a flowchart illustrating the resource selection method provided in an embodiment of this application;

[0044] Figure 3 This is a schematic diagram of resource distribution on different CCs provided in the embodiments of this application;

[0045] Figure 4 This is a schematic diagram of the structure of the resource selection device provided in the embodiments of this application;

[0046] Figure 5 This is a schematic diagram of the structure of the communication device provided in the embodiments of this application;

[0047] Figure 6 This is a schematic diagram of the structure of the first terminal provided in the embodiments of this application. Detailed Implementation

[0048] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0049] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0050] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to communication systems other than NR system applications, such as 6th generation (6G) radio communication systems. th Generation 6G communication system.

[0051] Figure 1 This is a schematic diagram of a wireless communication system to which the embodiments of this application can be applied. Figure 1The wireless communication system shown includes a terminal 11 and a network-side device 12. The terminal 11 can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, vehicle-mounted device (VUE), pedestrian terminal (PUE), smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game console, personal computer (PC), ATM, or self-service machine, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. It should be noted that the specific type of terminal 11 is not limited in the embodiments of this application.

[0052] Network-side equipment 12 may include access network equipment or core network equipment. Access network equipment may also be referred to as radio access network equipment, radio access network (RAN), radio access network function, or radio access network unit. Access network equipment may include base stations, WLAN access points, or WiFi nodes, etc. Base stations may be referred to as Node B, evolved Node B (eNB), access point, base transceiver station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home B node, home evolved B node, Transmitting Receiving Point (TRP), or any other suitable term in the field, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that in this embodiment, only a base station in an NR system is used as an example for description, and the specific type of base station is not limited.Core network equipment may include, but is not limited to, at least one of the following: core network node, core network function, Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (or L-NEF), and Binding Support. Functions include BSF, Application Function (AF), Location Management Function (LMF), Enhanced Serving Mobile Location Centre (E-SMLC), and Network Data Analytics Function (NWDAF). It should be noted that this application embodiment only uses core network equipment in the NR system as an example for description, and does not limit the specific type of core network equipment.

[0053] The resource selection method, apparatus, terminal, and storage medium provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0054] I. Carrier Aggregation

[0055] Carrier aggregation combines two or more carrier units together to support a larger transmission bandwidth (up to 100MHz). In practice, each carrier unit corresponds to an independent cell. Typically, one carrier unit can be equated to one cell. The maximum bandwidth of each carrier unit is 20MHz. To efficiently utilize fragmented spectrum, carrier aggregation supports the aggregation of different carrier units:

[0056] 1) Carrier units with the same or different bandwidths;

[0057] 2) Carrier units that are adjacent or not adjacent within the same frequency band;

[0058] 3) Carrier units in different frequency bands.

[0059] From a baseband implementation perspective, there is no difference between these cases. This mainly affects the complexity of the RF unit implementation.

[0060] II. SL

[0061] Starting with release 12, the Long Term Evolution (LTE) system supports SL (Single Node), which is used for direct data transmission between UEs without going through network devices.

[0062] The LTE Sidelink design supports two resource allocation modes: scheduled resource allocation and autonomous resource selection. In the former, the network-side equipment controls and allocates resources to each UE, while in the latter, the UE autonomously selects resources.

[0063] Starting with release 15, LTE supports Sidelink carrier aggregation. The CA and Uu interfaces (i.e., downlink and uplink) of LTE Sidelink differ, and there is no distinction between primary component carrier (PCC) and secondary component carrier (SCC). In autonomous resource selection mode, UEs independently perform resource sensing and resource reservation on each CC.

[0064] LTE Sidelink is designed for specific public safety applications, such as emergency communications in disaster areas like fires or earthquakes, or vehicle-to-everything (V2X) communications. V2X communications include various services, such as basic safety communications, advanced (autonomous) driving, platooning, sensor extension, and more. Because LTE Sidelink only supports broadcast communications, it is primarily used for basic safety communications; other advanced V2X services will be supported through NR Sidelink.

[0065] The 5G NR system can be used in operating frequency bands above 6GHz that are not supported by LTE, and supports greater operating bandwidth. The NR system also supports Sidelink interface communication for direct communication between terminals.

[0066] III. NR SL Resource Allocation Method

[0067] NR V2X defines two resource allocation modes: mode 1, where resources are scheduled by the base station; and mode 2, where the UE decides which resources to use for transmission. In mode 2, resource information may come from base station broadcast messages or pre-configured information.

[0068] 1. If the UE is operating within the range of the base station and has a Radio Resource Control (RRC) connection with the base station, the UE's resource allocation mode can be mode1 and / or mode2;

[0069] 2. If the UE is operating within the base station's range but has no RRC connection to the base station, then the UE can only operate in mode 2;

[0070] 3. If the UE is operating outside the base station range, the UE can only operate in mode 2 to perform V2X transmission based on the pre-configured information.

[0071] For mode2, the specific working method is as follows:

[0072] 1) Transmission (TX): After resource selection is triggered, the UE first determines the resource selection window. The lower boundary of the resource selection window is at time T1 after the resource selection is triggered, and the upper boundary of the resource selection is at time T2 after the resource selection is triggered. T2 is the value selected by the UE within the packet delay budget (PDB) of its transport block (TB). T2 is not earlier than T1.

[0073] 2) Before selecting resources, the UE needs to determine the candidate resource set. Specifically, it can compare the Reference Signal Received Power (RSRP) measured on the resource within the resource selection window with the corresponding RSRP threshold. If the RSRP is lower than the RSRP threshold, then the resource can be included in the candidate resource set.

[0074] 3) After the candidate resource set is determined, the UE randomly selects transmission resources from the candidate resource set.

[0075] In addition, the UE can reserve transmission resources for subsequent transmissions during the current transmission, and NR V2X supports chained resource reservation. That is, a Sidelink Control Information (SCI) can reserve current resources, and up to two additional resources can be reserved. In the next resource, two more reserved resources can be indicated. Within the selection window, resources can be continuously reserved using a dynamic reservation method.

[0076] The resource selection method provided in this application embodiment can be applied to a first terminal. This application embodiment uses the first terminal as the sender of SL data as an example for illustration, but it does not limit the first terminal to only send SL data or only receive SL data.

[0077] Figure 2 This is a flowchart illustrating the resource selection method provided in an embodiment of this application, such as... Figure 2 As shown, the method includes step 201; wherein:

[0078] Step 201: Based on the first information, the first terminal performs a target operation on the resources on N1 first carriers to determine one or more target resources on the first carriers.

[0079] The target operation includes at least one of the following: resource selection, resource reselection, resource reassessment, and resource preemption; the first information is the information of target candidate resources on N1 first carriers; the target candidate resources overlap with the first reference resources, and / or, the PSFCH corresponding to the target candidate resources overlaps with the second reference resources;

[0080] The aforementioned first reference resource includes at least one of the following:

[0081] 1) The first resource of the first terminal on N2 second carriers;

[0082] 2) The PSFCH resources corresponding to the reserved resources of the first terminal on N3 third carriers;

[0083] 3) The second terminal has the first transmission resource on N4 fourth carriers, and the second terminal is the side link SL data receiving end corresponding to the target resource;

[0084] 4) The second terminal detects the second transmission resources of the third terminal on N5 fifth carriers;

[0085] The aforementioned second reference resource includes at least one of the following:

[0086] 1) The second resources of the first terminal on N6 sixth carriers;

[0087] 2) Reserved resources for the first terminal on N7 seventh carriers.

[0088] It should be noted that the embodiments of this application can be applied to scenarios where carrier aggregation technology is used in SL. N1 to N7 are all positive integers.

[0089] Specifically, because NR SL UEs cannot simultaneously transmit and receive data on multiple carriers within a single frequency band (at least not within an intraband), when carrier aggregation is applied in NR SL, since NR SL supports multiple subcarrier intervals and the PSFCH is configured based on resource pools, there may be overlap between the PSSCH and PSFCH on different carriers in carrier aggregation. Figure 3 This is a schematic diagram of resource distribution on different CCs provided in the embodiments of this application, such as... Figure 3 As shown, the shaded areas on CC1, CC2, and CC3 represent the transmit resources on the carrier, the dotted shaded areas represent the receive resources on the carrier, and the unshaded area F represents the time reserved for PSFCH on the carrier. This area can distribute both transmit and receive resources. It is evident that the PSFCH transmit resources used for receiving on CC1 overlap with the PSSCH receive resources used for transmitting on CC2. Furthermore, the PSFCH transmit resources used for receiving on CC1 also overlap with the PSSCH receive resources used for transmitting on CC3. If the terminal needs to simultaneously transmit PSSCH and receive PSFCH in the overlapping areas of PSSCH and PSFCH on different carriers in carrier aggregation, a half-duplex problem with transmit / receive conflicts will occur.

[0090] In addition, since the PSSCH positions configured on different carriers of carrier aggregation may overlap, if the UE wants to send and receive PSSCH simultaneously in the overlapping part of PSSCH on different carriers of carrier aggregation, a half-duplex problem of transmit and receive conflict will also occur.

[0091] To address the aforementioned issues, in this embodiment, the first terminal can perform target operations on the resources of the N1 first carriers based on first information, namely, information on target candidate resources on the N1 first carriers. These operations may include at least one of resource selection, resource reselection, resource reassessment, and resource preemption to determine target resources on one or more first carriers. The target candidate resources overlap with the first reference resources, and / or the PSFCH corresponding to the target candidate resources overlaps with the second reference resources.

[0092] As can be seen, the target candidate resources are the resources with transmit / receive conflicts on the N1 first carriers. The embodiments of this application can perform target operations on the resources on the N1 first carriers based on the target candidate resources with transmit / receive conflicts on the N1 first carriers to determine the target resources on one or more first carriers. That is, when determining the target resources on one or more first carriers, the influence of the target candidate resources with transmit / receive conflicts on the N1 first carriers is considered. Thus, the candidate resources with transmit / receive conflicts can be excluded when determining the target resources, which can effectively solve the half-duplex problem of transmit / receive conflicts.

[0093] The aforementioned first reference resource may include at least one of the following:

[0094] 1) The first resource of the first terminal on N2 second carriers;

[0095] Specifically, when the target candidate resources overlap with the first resources of the first terminal on N2 second carriers, the first terminal can perform target operation on the resources on N1 first carriers based on the information of the target candidate resources on N1 first carriers. This allows the first terminal to determine one or more target resources on the first carriers, taking into account the potential transmission and reception conflicts of the target candidate resources, thereby avoiding the existence of transmission and reception conflicting resources among the target resources.

[0096] 2) The PSFCH resources corresponding to the reserved resources of the first terminal on N3 third carriers;

[0097] Specifically, when there is an overlap between the target candidate resources and the PSFCH resources corresponding to the reserved resources of the first terminal on the N3 third carriers, the first terminal can perform target operation on the resources on the N1 first carriers based on the information of the target candidate resources on the N1 first carriers. Under the premise of considering the transmission and reception conflicts of the target candidate resources, the first terminal can determine one or more target resources on the first carriers, thereby avoiding the existence of transmission and reception conflict resources among the target resources.

[0098] 3) The second terminal has the first transmission resource on N4 fourth carriers, and the second terminal is the side link SL data receiving end corresponding to the target resource;

[0099] Specifically, if the second terminal is the SL data receiver corresponding to the target resource, that is, the transmitter corresponding to the second terminal is the first terminal, then when the target candidate resource overlaps with the first transmission resource of the second terminal on N4 fourth carriers, the first terminal can perform target operation on the resources on N1 first carriers based on the information of the target candidate resource on N1 first carriers, so as to determine one or more target resources on the first carriers under the premise of considering the transmission and reception conflict of the target candidate resource, thereby avoiding the existence of transmission and reception conflict resources in the target resource.

[0100] 4) The second terminal detects the second transmission resources of the third terminal on N5 fifth carriers;

[0101] Specifically, if the second terminal is the SL data receiver corresponding to the target resource, that is, the transmitter corresponding to the second terminal is the first terminal, then when the target candidate resource overlaps with the second transmission resource of the third terminal detected by the second terminal on the N5 fifth carriers, the first terminal can perform target operation on the resources on the N1 first carriers based on the information of the target candidate resources on the N1 first carriers, so as to determine one or more target resources on the first carriers under the premise of considering the transmission and reception conflict of the target candidate resources, thereby avoiding the existence of transmission and reception conflict resources in the target resources.

[0102] The aforementioned second reference resource includes at least one of the following:

[0103] 5) The second resources of the first terminal on N6 sixth carriers;

[0104] Specifically, when the PSFCH corresponding to the target candidate resource overlaps with the second resource of the first terminal on the N6 sixth carriers, the first terminal can perform target operation on the resources on the N1 first carriers based on the information of the target candidate resources on the N1 first carriers. Under the premise of considering the transmission and reception conflicts of the target candidate resources, the first terminal can determine one or more target resources on the first carriers, thereby avoiding the existence of transmission and reception conflict resources among the target resources.

[0105] 6) Reserved resources for the first terminal on N7 seventh carriers.

[0106] Specifically, when the PSFCH corresponding to the target candidate resource overlaps with the reserved resources of the first terminal on the N7 seventh carriers, the first terminal can perform target operation on the resources on the N1 first carriers based on the information of the target candidate resources on the N1 first carriers. Under the premise of considering the transmission and reception conflicts of the target candidate resources, the first terminal can determine one or more target resources on the first carriers, thereby avoiding the existence of transmission and reception conflict resources among the target resources.

[0107] In the resource selection method provided in this application embodiment, when the target candidate resource overlaps with the first reference resource, and / or the PSFCH corresponding to the target candidate resource overlaps with the second reference resource, the first terminal can perform target operations on the resources on the N1 first carriers based on the first information of the target candidate resources on the N1 first carriers to determine the target resources on one or more first carriers. This application embodiment considers overlapping target candidate resources when determining the target resources on the first carriers, thereby resolving the transmit / receive conflict problem on different carriers in carrier aggregation scenarios and improving SL transmission performance.

[0108] Optionally, the first resource may include at least one of the following:

[0109] 1) PSFCH resources to be received;

[0110] 2) PSSCH resources to be received;

[0111] 3) Sidelink-Synchronization Signal / PBCH block (S-SSB) resources to be received;

[0112] 4) Candidate resources for PSFCH;

[0113] 5) Candidate resources for S-SSB;

[0114] 6) Resources within the third time period; the third time period is the time during which the first terminal waits for a response message after sending a request message, or the runtime of a timer. The runtime of the timer is used to continuously monitor the response message after the first terminal sends a request message. The request message can be a Channel State Information request (CSI request).

[0115] Optionally, the second resource may include at least one of the following:

[0116] 1. PSFCH resources to be sent;

[0117] 2. PSSCH resources to be sent;

[0118] 3. S-SSB resources to be sent;

[0119] 4. Candidate resources for PSFCH;

[0120] 5. Candidate resources for S-SSB.

[0121] Optionally, the aforementioned first transmission resource and / or second transmission resource may include at least one of the following:

[0122] 1) Periodic reserved resources and / or non-periodic reserved resources used for sending SL data;

[0123] 2) Resources of the PSFCH to be sent;

[0124] 3) Resources for the PSSCH to be sent;

[0125] 4) Resources of S-SSBs to be sent.

[0126] Optionally, the first terminal performs a target operation on resources on N1 first carriers based on the first information. The implementation method for determining the target resources on one or more first carriers may include:

[0127] For any first carrier, the first terminal excludes target candidate resources on the first carrier within the first time window and determines the first candidate resource set on the first carrier.

[0128] The first terminal selects the target resource from the first set of candidate resources.

[0129] Specifically, for any first carrier, the first candidate resource set can be initialized by the physical layer (PHY) of the first terminal, and the target candidate resources on the first carrier can be excluded from the first candidate resource set within the first time window.

[0130] The resource selection method of this application embodiment will be illustrated below with examples of different contents of the first reference resource and / or the second reference resource.

[0131] i. The first reference resource includes the first resources of the first terminal on N2 second carriers, and the first resource includes at least one of the following: PSFCH resources to be received; PSSCH resources to be received; and S-SSB resources to be received.

[0132] The PHY layer of the first terminal initializes a first candidate resource set, and within a first time window, excludes target candidate resources that overlap with first resources on at least one other carrier in the first candidate resource set.

[0133] In one embodiment, the PHY layer of the first terminal will exclude the corresponding target candidate resource only when the priority of the packet that triggers resource selection is higher or lower than the priority of the first resource, or only when the priority of the SL data to be sent by the first terminal is higher or lower than the priority of the first resource; otherwise, it will not exclude it.

[0134] The priority of the package that triggers resource selection can be understood as the priority of the target candidate resource.

[0135] For example, there is an overlap between the candidate resources of CC1 and the PSFCH receiving resources of CC2, that is, there is a transmit / receive conflict between the two resources. The PHY layer of the first terminal will only exclude the candidate resources of CC1 if the priority of the packet that triggers resource selection is higher than the priority of the PSFCH receiving resources of CC2.

[0136] In one embodiment, the PHY layer of the first terminal will exclude the corresponding target candidate resource only if the measured Reference Signal Received Power (RSRP) is greater than or less than a first preset value; otherwise, it will not exclude it.

[0137] ii. The second reference resources include the reserved resources of the first terminal on the N7 seventh carriers.

[0138] The PHY layer of the first terminal initializes a first candidate resource set. Within a first time window, it excludes target candidate resources from each or a certain carrier in the first candidate resource set. The target candidate resource is a candidate resource whose PSFCH will overlap with a resource already reserved on at least one other carrier, or a candidate resource whose PSFCH will overlap with a resource already reserved on at least one other carrier.

[0139] In one embodiment, the PHY layer of the first terminal will exclude the corresponding target candidate resource only when the priority of the packet that triggers resource selection is higher or lower than the priority of the resource already reserved on at least one other carrier, or only when the priority of the SL data to be transmitted by the first terminal is higher or lower than the priority of the resource already reserved on at least one other carrier; otherwise, it will not exclude it.

[0140] The priority of the package that triggers resource selection can be understood as the priority of the target candidate resource.

[0141] For example, there is an overlap between the PSFCH corresponding to the candidate resource of CC1 and the resource already reserved on CC2, that is, there is a send / receive conflict between these two resources. The PHY layer of the first terminal will only exclude the candidate resource of CC1 if the priority of the packet that triggers resource selection is higher than the priority of the resource already reserved on CC2.

[0142] In one embodiment, the PHY layer of the first terminal will exclude the corresponding target candidate resource only if the measured RSRP is greater than or less than a second preset value; otherwise, it will not exclude it.

[0143] iii. The first reference resource includes the first resource of the first terminal on N2 second carriers, and the first resource includes at least one of the following: candidate resources of PSFCH; candidate resources of S-SSB.

[0144] The PHY layer of the first terminal initializes a first candidate resource set, and within a first time window, excludes target candidate resources that overlap with first resources on at least one other carrier in the first candidate resource set.

[0145] In one embodiment, the PHY layer of the first terminal will exclude the corresponding target candidate resource only when the priority of the packet that triggers resource selection is higher or lower than the priority of the first resource, or only when the priority of the SL data to be sent by the first terminal is higher or lower than the priority of the first resource; otherwise, it will not exclude it.

[0146] For example, there is an overlap between the candidate resources of CC1 and the candidate resources of CC2's PSFCH, meaning there is a send / receive conflict between these two resources. The PHY layer of the first terminal will only exclude the candidate resource of CC1 if the priority of the packet that triggers resource selection is higher than the priority of the candidate resource of CC2's PSFCH.

[0147] In one embodiment, the PHY layer of the first terminal will only exclude the corresponding target candidate resource if the measured RSRP is greater than or less than a third preset value; otherwise, it will not exclude it.

[0148] Optionally, the aforementioned first resource can be obtained by notification from the Medium Access Control (MAC) layer of the first terminal.

[0149] iv. The first reference resource includes the first resources of the first terminal on N2 second carriers, and the first resource includes the resource situation in the third time period.

[0150] The PHY layer of the first terminal initializes a first candidate resource set, and within a first time window, excludes target candidate resources in the first candidate resource set that overlap with resources on at least one other carrier in a third time period.

[0151] The aforementioned third time is the time during which the first terminal waits for a response after initiating a request message, or the timer's runtime. The timer's runtime is the time during which the timer continuously monitors the response message after the first terminal sends the request message.

[0152] For example, if the first terminal sends a request message on CC2, such as a CSI request, during the running time of a timer, the first terminal will continuously listen on CC2 to see if the other end of the request message has replied with a Channel State Information report (CSI report). During this waiting period, the first terminal will be in a receiving state. Therefore, the first terminal needs to exclude candidate resources on CC1 that overlap with CC2 during this waiting period within the first time window.

[0153] In one embodiment, the PHY layer of the first terminal will exclude the corresponding target candidate resource only when the priority of the packet that triggers resource selection is higher or lower than the priority of the resource in the aforementioned third time period, or only when the priority of the SL data to be sent by the first terminal is higher or lower than the priority of the resource in the aforementioned third time period; otherwise, it will not exclude it.

[0154] In one embodiment, the PHY layer of the first terminal will exclude the corresponding candidate resource only if the measured RSRP is greater than or less than a fourth preset value; otherwise, it will not exclude it.

[0155] v. The first reference resource includes the first transmission resource of the second terminal on N4 fourth carriers, and the second terminal is the SL data receiver corresponding to the target resource.

[0156] If the second terminal has a seventh resource on a carrier (the corresponding sender is the first terminal) that overlaps with the first transmission resource of the second terminal on at least one other carrier, then the second terminal can send the first message to the first terminal.

[0157] The first terminal can exclude resources on the carrier corresponding to the candidate resource that overlap with the first transmission resource from the first candidate resource set based on the received first message.

[0158] The aforementioned seventh resource can be a resource to be received by the second terminal, and the aforementioned first transmission resource is a resource that the second terminal can use to transmit. The first transmission resource may include at least one of the following: periodically reserved resources and / or non-periodic reserved resources; PSFCH resources to be transmitted; PSSCH resources to be transmitted; and S-SSB resources to be transmitted. Therefore, in this embodiment, when there is a transmission conflict between the second terminal (receiving end) having candidate resources for receiving from the first terminal (sending end) and resources for transmitting PSFCH, PSSCH, or S-SSB, the second terminal can notify the first terminal in advance so that the first terminal can exclude the candidate resource during resource exclusion.

[0159] The aforementioned first message can be communicated by the second terminal to the first terminal through a higher-level notification, or it can be communicated by the second terminal to the first terminal by sending an instruction message.

[0160] The aforementioned indication information can be carried on the physical sidelink control channel (PSCCH) or PSSCH.

[0161] The aforementioned first message may include at least one of the following:

[0162] a) Carrier information; for example, carrier information where transmission and reception conflicts occur. Specifically, the second terminal can inform the first terminal which carriers have transmission and reception conflicts through the first message.

[0163] b) Resource information; for example, resource information that needs to be excluded. Specifically, the second terminal can inform the first terminal which resources need to be excluded through the first message, or the second terminal can send its own information about the first sent resources to the first terminal so that the first terminal can determine which resources to exclude.

[0164] The aforementioned first message can also be used to indicate that one or more resources of the second terminal on one or more carriers are subject to transmit / receive conflicts, are unavailable for receiving, or are only available for transmitting, or can be used to indicate that one or more resources of the first terminal on one or more carriers are unavailable for transmitting.

[0165] In one embodiment, if the receiving end of the first sending resource is the first terminal, the second terminal may inform the first terminal of the first message without higher-level notification or signaling.

[0166] In one embodiment, if the aforementioned seventh resource is within the first time window, the first terminal can exclude the resource.

[0167] In one embodiment, the PHY layer of the first terminal will exclude the corresponding candidate resource only if the priority of the packet that triggers resource selection is higher or lower than the priority of the first transmission resource mentioned above; otherwise, it will not exclude it.

[0168] For example, if there is an overlap between the candidate resources of the second terminal on CC1 and the first transmission resource on CC2, that is, there is a transmission conflict between these two resources, the PHY layer of the first terminal will only exclude the candidate resources of CC1 if the priority of the packet that triggers resource selection on CC1 is higher than the priority of the first transmission resource of the second terminal on CC2, and only if the priority of the SL data to be transmitted by the first terminal is higher or lower than the priority of the first transmission resource of the second terminal on CC2.

[0169] In one embodiment, the PHY layer of the first terminal will exclude the corresponding candidate resource only if the measured RSRP is greater than or less than a fifth preset value; otherwise, it will not exclude it.

[0170] vi. The first reference resource includes the second transmission resource of the third terminal on N5 fifth carriers detected by the second terminal, and the second terminal is the SL data receiver corresponding to the target resource.

[0171] If the second terminal has an eighth resource on a carrier (the corresponding transmitter is the first terminal) that overlaps with the second transmission resource detected by the second terminal (the third terminal) on at least one other carrier, and if the eighth resource is within the first time window, the first terminal can exclude the candidate resource that overlaps with the second transmission resource on the carrier corresponding to the eighth resource from the first candidate resource set within the first time window. That is, if the transmission resource of the first terminal (transmitter) conflicts with the transmission resource of other terminals (the third terminal), the first terminal excludes the resource during resource exclusion.

[0172] In one embodiment, the PHY layer of the first terminal will exclude the corresponding candidate resource only when the priority of the candidate resource is higher or lower than the priority of the second transmission resource, or only when the priority of the SL data to be transmitted by the first terminal is higher or lower than the priority of the second transmission resource; otherwise, it will not exclude it.

[0173] In one embodiment, the PHY layer of the first terminal will exclude the corresponding candidate resource only if the measured RSRP is greater than or less than a sixth preset value; otherwise, it will not exclude it.

[0174] It should be noted that, in the case of resource reassessment or preemption, resources on at least one other carrier in the above points that may experience transmit / receive conflicts can be indicated by higher layers, such as the MAC layer of the first terminal.

[0175] Optionally, the implementation method of the first terminal selecting the target resource from the first candidate resource set may include:

[0176] The first terminal selects, from the first candidate resource set, resources that overlap in the time domain on multiple first carriers as target resources.

[0177] Specifically, after excluding target candidate resources with transmission and reception conflicts, the first terminal can preferentially select resources that overlap in the time domain on multiple carriers from the first candidate resource set of each carrier or a certain carrier, that is, preferentially select frequency division multiplexing (FDM) resources as reserved resources. Alternatively, the first terminal can preferentially select resources that overlap in the time domain on multiple carriers from the union of the first candidate resource sets of each carrier or certain carriers.

[0178] Optionally, the first terminal performs a target operation on resources on N1 first carriers based on the first information. The implementation method for determining the target resources on one or more first carriers may include:

[0179] The first terminal reports the second candidate resource set to the higher layer; the second candidate resource set includes the candidate resource sets on all first carriers.

[0180] The first terminal selects the target resource from the second set of candidate resources based on the first information.

[0181] Specifically, before selecting reserved resources from the candidate resource set, the first terminal also needs to report the candidate resource set. Specifically, the PHY layer of the first terminal can report the candidate resource set on all first carriers to the MAC layer of the first terminal as the second candidate resource set, so that the MAC layer of the first terminal can select the target resource from the second candidate resource set.

[0182] Optionally, the first terminal performs a target operation on resources on N1 first carriers based on the first information. The implementation method for determining the target resources on one or more first carriers may include:

[0183] The first terminal reports one or more sets of candidate resources on the first carrier to the higher layer.

[0184] The first terminal merges the candidate resource sets on one or more first carriers to obtain the second candidate resource set;

[0185] The first terminal selects the target resource from the second set of candidate resources based on the first information.

[0186] Specifically, before selecting reserved resources from the candidate resource set, the first terminal needs to report the candidate resource set. Specifically, the PHY layer of the first terminal can report the candidate resource set of each carrier or part of the carrier to the MAC layer of the first terminal. Then, the MAC layer of the first terminal merges the reported resources to obtain a second candidate resource set, so that the MAC layer of the first terminal can select the target resource from the second candidate resource set.

[0187] Optionally, the first terminal may merge candidate resource sets on one or more first carriers to obtain a second candidate resource set in the following ways:

[0188] The first terminal merges the resources within the first time window from the candidate resource sets on one or more first carriers to obtain the second candidate resource set.

[0189] Specifically, the MAC layer of the first terminal can merge only the portions of the candidate resource sets of each carrier or some carriers that are within the first time window to obtain a second candidate resource set, so that the MAC layer of the first terminal can select the target resource from the second candidate resource set.

[0190] Optionally, the first terminal performs a target operation on resources on N1 first carriers based on the first information. The implementation method for determining the target resources on one or more first carriers may include:

[0191] The first terminal reports the second candidate resource set to the higher layer; the second candidate set includes the candidate resource sets on all first carriers, and the candidate resource sets on first carriers that have not triggered resource selection or resource reselection are empty;

[0192] The first terminal selects the target resource from the second set of candidate resources based on the first information.

[0193] Specifically, the PHY layer of the first terminal can report a second candidate resource set to the MAC layer of the first terminal. The second candidate set includes the candidate resource sets on all first carriers, and the candidate resource sets on first carriers that have not triggered resource selection or resource reselection are empty, so that the MAC layer of the first terminal can select the target resource from the second candidate resource set based on the first information.

[0194] Optionally, the first terminal performs a target operation on resources on N1 first carriers based on the first information. The implementation method for determining the target resources on one or more first carriers may include:

[0195] The first terminal reports one or more candidate resource sets on the first carrier to the higher layer, and the first terminal does not report candidate resource sets on the first carrier that have not triggered resource selection or resource reselection to the higher layer; or, the first terminal reports one or more candidate resource sets on the first carrier to the higher layer, and the candidate resource sets on the first carrier that have not triggered resource selection or resource reselection reported by the first terminal to the higher layer are empty.

[0196] The first terminal determines the second candidate resource set based on the reported candidate resource sets on one or more first carriers;

[0197] The first terminal selects the target resource from the second set of candidate resources based on the first information.

[0198] Specifically, the PHY layer of the first terminal may report the candidate resource set on each or some first carriers to the MAC layer of the first terminal, and the PHY layer of the first terminal may not report the candidate resource set on the first carriers that have not triggered resource selection or resource reselection to the MAC layer of the first terminal, so that the MAC layer of the first terminal can select the target resource from the second candidate resource set based on the first information.

[0199] Alternatively, the PHY layer of the first terminal may report the candidate resource set on each or some first carriers to the MAC layer of the first terminal, and the candidate resource set on the first carriers that have not triggered resource selection or resource reselection reported by the PHY layer of the first terminal to the MAC layer of the first terminal may be empty, so that the MAC layer of the first terminal may select the target resource from the second candidate resource set based on the first information.

[0200] Optionally, the first terminal performs a target operation on resources on N1 first carriers based on the first information. The implementation method for determining the target resources on one or more first carriers may include:

[0201] The first terminal reports to the higher layer a set of candidate resources on one or more first carriers, as well as first information;

[0202] The first terminal determines the second candidate resource set based on the reported candidate resource sets on one or more first carriers;

[0203] The first terminal selects the target resource from the second set of candidate resources based on the first information.

[0204] Specifically, the PHY layer of the first terminal can proactively report resource information that may conflict to the MAC layer of the first terminal, that is, proactively report the aforementioned first information. Specifically, the PHY layer of the first terminal can report the candidate resource set on each or some first carriers, as well as the first information, to the MAC layer of the first terminal. Based on the reported candidate resource set on each or some first carriers, the MAC layer of the first terminal determines a second candidate resource set, and then selects the target resource from the second candidate resource set based on the first information.

[0205] Optionally, the first terminal selects the implementation method of the target resource from the second candidate resource set based on the first information, which may include at least one of the following:

[0206] 1) The first terminal selects a resource from the second candidate resource set that does not overlap with the first reference resource as the target resource;

[0207] 2) The first terminal selects the target resource from the resources in the second candidate resource set, excluding the target candidate resource;

[0208] 3) The first terminal selects the target candidate resource from the second candidate resource set according to the lowest priority as the target resource;

[0209] 4) The first terminal selects, from the resources in the second candidate resource set that do not overlap with the first reference resource, the resources that overlap in the time domain on multiple first carriers as the target resources.

[0210] For example, the MAC layer of the first terminal can select a target resource as a reserved resource from the candidate resource set of various carriers or a certain carrier according to at least one of the following:

[0211] i. From the second set of candidate resources, select candidate resources that do not overlap with resources (first reference resources and / or second reference resources) that have transmission and reception conflicts with other CCs;

[0212] ii. For resources in the second candidate resource set, if there are resources that overlap with first resources on at least one other carrier, the MAC layer of the first terminal selects target resources as reserved resources from resources other than these resources, or selects these resources with low priority, wherein the first resources include at least one of the following: PSFCH resources to be received; PSSCH resources to be received; S-SSB resources to be received.

[0213] iii. When the MAC layer of the first terminal selects a target resource as a reserved resource based on the reported second candidate resource set, it must satisfy the following: the PSFCH corresponding to the selected target resource will not overlap with the resources already reserved on at least one other carrier;

[0214] iv. For resources in the second candidate resource set, if there are resources that overlap with first resources on at least one other carrier, the MAC layer of the first terminal selects target resources as reserved resources from resources other than these resources, or selects these resources with low priority, wherein the first resources include at least one of the following: candidate resources of PSFCH; candidate resources of S-SSB.

[0215] v. For resources in the second candidate resource set, if there are resources that overlap with resources in a third time period on at least one other carrier, the MAC layer of the first terminal selects the target resource as a reserved resource from the resources outside of these resources, or selects these resources with low priority.

[0216] vi. If the second terminal has a seventh resource on a carrier (the corresponding transmitter is the first terminal) that overlaps with the first transmission resource of the second terminal on at least one other carrier, the second terminal can send a first message to the first terminal through higher layer notification or transmission signaling. If the seventh resource is in the second candidate resource set, the MAC layer of the first terminal selects the target resource as the reserved resource from the resources other than the seventh resource, or selects the seventh resource with low priority.

[0217] vii. If the second terminal has an eighth resource on a carrier (the corresponding transmitter is the first terminal) that overlaps with the second transmission resource detected by the second terminal (the third terminal) on at least one other carrier, and if the eighth resource is within the second candidate resource set, then the MAC layer of the first terminal selects the target resource as the reserved resource from the resources other than the eighth resource, or selects the eighth resource with low priority.

[0218] It should be noted that after excluding target candidate resources with transmission and reception conflicts, the MAC layer of the first terminal can prioritize the selection of resources that overlap in the time domain on multiple carriers from the second candidate resource set, that is, prioritize the selection of FDM resources as target resources.

[0219] Optionally, the first terminal can integrate resource pools on multiple carriers into a virtual resource pool to exclude target candidate resources with transmission and reception conflicts between carriers in the virtual resource pool.

[0220] Based on the first information, the first terminal performs target operations on resources on N1 first carriers. The implementation methods for determining the target resources on one or more first carriers may include:

[0221] Based on the initial candidate resource set on each first carrier, the first terminal determines the third candidate resource set; the third candidate resource set includes the intersection or union of the initial candidate resource sets on each first carrier.

[0222] The first terminal excludes resources in the third candidate resource set that overlap with the target candidate resource, and determines the fourth candidate resource set;

[0223] The first terminal selects the target resource from the fourth candidate resource set.

[0224] Specifically, the first terminal can first initialize the candidate resource set on each first carrier to obtain the initial candidate resource set on each first carrier. The initial candidate resource set here can represent the candidate resource set that has not been excluded. Then, based on the initial candidate resource set on each first carrier, the intersection or union of the initial candidate resource sets on each first carrier is determined as the third candidate resource set.

[0225] The first terminal then excludes resources in the third candidate resource set that overlap with the target candidate resource, and determines a fourth candidate resource set that does not have a transmission / reception conflict, so that the first terminal can select the target resource from the fourth candidate resource set.

[0226] For example, the first terminal can determine the fourth candidate resource set based on at least one of the following:

[0227] i. If, within the first time window, the first terminal finds that a target candidate resource on one carrier overlaps with the position of a candidate resource on at least one other carrier's PSFCH or S-SSB, then the resource overlapping with the target candidate resource in the third candidate resource set will be excluded.

[0228] ii. If, within the first time window, a target candidate resource on one carrier overlaps with the candidate resource of at least one PSFCH, PSSCH, or S-SSB to be received on another carrier, the resource overlapping with the target candidate resource in the third candidate resource set shall be excluded.

[0229] iii. Within the first time window, the first terminal excludes resources in the third candidate resource set that are within the third time period;

[0230] iv. If the second terminal has a seventh resource on a carrier (the corresponding transmitter is the first terminal) that overlaps with the first transmission resource of the second terminal on at least one other carrier, the second terminal sends a first message to the first terminal through higher layer notification or transmission signaling. If the seventh resource is within the first time window, the first terminal excludes the resources that overlap with the seventh resource in the third candidate resource set within the first time window.

[0231] v. If the second terminal has an eighth resource on a carrier (the corresponding transmitter is the first terminal) that overlaps with the second transmission resource detected by the second terminal (the third terminal) on at least one other carrier, and if the eighth resource is within the first time window, the first terminal will exclude the resources that overlap with the eighth resource in the third candidate resource set within the first time window.

[0232] Optionally, the implementation method for the first terminal to determine the third candidate resource set based on the initial candidate resource set on each first carrier may include:

[0233] The first terminal determines the third candidate resource set based on the initial candidate resource set on each first carrier that meets the target conditions;

[0234] Among them, at least one of the following is the target condition:

[0235] 1) The subcarrier spacing (SCS) of each carrier is the same;

[0236] 2) The Hybrid Automatic Repeat Request (HARQ) configuration is the same for the resource pools of each carrier. For example, the network is configured to disable or enable HARQ.

[0237] 3) The PSFCH configuration of the resource pools of each carrier is the same. For example, the network is configured with the same PSFCH period.

[0238] Optionally, the implementation method of the first terminal excluding resources in the third candidate resource set that overlap with the target candidate resource to determine the fourth candidate resource set may include at least one of the following:

[0239] 1) If there are resources in the third candidate resource set that overlap with the target candidate resource, and the priority of the SL data to be sent by the first terminal is higher or lower than the priority of the first reference resource, the first terminal will exclude the resources in the third candidate resource set that overlap with the target candidate resource and determine the fourth candidate resource set.

[0240] 2) If there are resources in the third candidate resource set that overlap with the target candidate resource, and the first terminal detects that the reference signal received power (RSRP) of the physical side link control channel (PSCCH) is greater than the first threshold in the second time window, and / or the RSRP of the physical side link shared channel (PSSCH) scheduled by the PSCCH is greater than the first threshold, and the reserved resources indicated by the resource reservation information in the side link control information (SCI) transmitted in the PSCCH overlap with the target candidate resource, the first terminal will exclude the resources in the third candidate resource set that overlap with the target candidate resource and determine the fourth candidate resource set.

[0241] Optionally, the implementation method of the target resource selected by the first terminal from the fourth candidate resource set may include:

[0242] The first terminal selects, from the fourth candidate resource set, resources that overlap in the time domain on multiple first carriers as target resources.

[0243] Specifically, the first terminal can preferentially select resources that overlap in the time domain on multiple first carriers from the fourth candidate resource set as target resources, that is, preferentially select FDM resources as target resources.

[0244] In one embodiment, the implementation method by which the first terminal selects the target resource from the fourth candidate resource set needs to satisfy:

[0245] a) The first terminal preferentially selects resources with time-domain overlap or FDM on multiple carriers;

[0246] b) Ensure that the initial transmission resources and retransmission resources for the same transmission fall within the same carrier.

[0247] Optionally, the PHY layer of the first terminal can integrate the resource pools on multiple carriers into a virtual resource pool, exclude resources from each carrier separately, and report the overlapping resources to the MAC layer of the first terminal.

[0248] Based on the first information, the first terminal performs target operations on resources on N1 first carriers. The implementation methods for determining the target resources on one or more first carriers may include:

[0249] Based on the initial candidate resource set on each first carrier, the first terminal determines the third candidate resource set; the third candidate resource set includes the intersection or union of the initial candidate resource sets on each first carrier.

[0250] For any first carrier, the first terminal excludes target candidate resources on the first carrier within the first time window and determines the first candidate resource set on the first carrier.

[0251] The first terminal selects a target resource from the resources in the third candidate resource set that overlap with the first intersection resource set; the first intersection resource set consists of resources in the first candidate resource sets on each first carrier that have an intersection.

[0252] Specifically, the PHY layer of the first terminal can first initialize the candidate resource set on each first carrier to obtain the initial candidate resource set on each first carrier. This initial candidate resource set can represent the candidate resource set that has not been excluded. Then, based on the initial candidate resource set on each first carrier, the intersection or union of the initial candidate resource sets on each first carrier is determined as the third candidate resource set. For any first carrier, the PHY layer of the first terminal then excludes the target candidate resources on the first carrier from the third candidate resource set within a first time window to determine the first candidate resource set on the first carrier.

[0253] The PHY layer of the first terminal can also determine the resources that have intersection in the first candidate resource set on each first carrier as the first intersection resources, and report the first intersection resources to the MAC layer of the first terminal so that the MAC layer of the first terminal can select the target resource from the resources that overlap with the first intersection resources in the third candidate resource set.

[0254] It should be noted that the implementation method of the PHY layer of the first terminal determining the first candidate resource set on the first carrier in this embodiment is roughly the same as the implementation method of the PHY layer of the first terminal determining the first candidate resource set on the first carrier in the above embodiments of this application, and will not be repeated here.

[0255] In one embodiment, the PHY layer of the first terminal can report resources in the first candidate resource set that overlap with the first intersection resources to the MAC layer of the first terminal. The first intersection resources are resources that have intersection in the candidate resource sets of each determined carrier, such as resources that overlap in the time domain.

[0256] Optionally, the implementation method for the first terminal to determine the third candidate resource set based on the initial candidate resource set on each first carrier may include:

[0257] The first terminal determines the third candidate resource set based on the initial candidate resource set on each first carrier that meets the target conditions;

[0258] Among them, at least one of the following is the target condition:

[0259] 1) The subcarrier spacing (SCS) of each carrier is the same;

[0260] 2) The Hybrid Automatic Repeat Request (HARQ) configurations for the resource pools of each carrier are the same, for example, HARQ is configured to be either disabled or enabled.

[0261] 3) The PSFCH configurations of the resource pools of each carrier are the same, for example, the PSFCH period is configured to be the same.

[0262] Optionally, for any first carrier, the implementation method of the first terminal excluding target candidate resources on the first carrier within the first time window to determine the first candidate resource set on the first carrier may include at least one of the following:

[0263] For any first carrier, if there is a target candidate resource on the first carrier within the first time window, and the priority of the SL data to be transmitted by the first terminal is higher or lower than the priority of the first reference resource, the first terminal excludes the target candidate resource on the first carrier within the first time window and determines the first candidate resource set on the first carrier.

[0264] For any first carrier, if there is a target candidate resource on the first carrier within the first time window, and the first terminal detects that the RSRP of the PSCCH is greater than the second threshold and / or the RSRP of the PSSCH scheduled by the PSCCH is greater than the second threshold within the third time window, and the reserved resource indicated by the resource reservation information in the SCI transmitted in the PSCCH overlaps with the target candidate resource, the first terminal excludes the target candidate resource on the first carrier within the first time window and determines the first candidate resource set on the first carrier.

[0265] Optionally, the implementation method for the first terminal to select the target resource from the resources overlapping with the first intersection resources in the third candidate resource set may include:

[0266] The first terminal selects, from the resources in the third candidate resource set that overlap with the first intersection resources, the resources that overlap in the time domain on multiple first carriers as the target resources.

[0267] In one embodiment, the implementation method for the first terminal to select a target resource from the resources overlapping with the first intersection resources in the third candidate resource set needs to satisfy the following:

[0268] a) The first terminal preferentially selects resources with time-domain overlap or FDM on multiple carriers;

[0269] b) Ensure that the initial transmission resources and retransmission resources for the same transmission fall within the same carrier.

[0270] Optionally, at least one carrier corresponding to the aforementioned target resource includes the initial transmission resource and retransmission resource of the same SL data to be transmitted.

[0271] Optionally, the first terminal can exclude candidate resources based on FDM resources.

[0272] Based on the first information, the first terminal performs target operations on resources on N1 first carriers. The implementation methods for determining the target resources on one or more first carriers may include:

[0273] Based on the initial candidate resource set on each first carrier, the first terminal determines the fifth candidate resource set; the fifth candidate resource set includes candidate resources that overlap in the time domain on each first carrier within the first time window;

[0274] The first terminal excludes resources in the fifth candidate resource set that overlap with the target candidate resource, and determines the sixth candidate resource set;

[0275] The first terminal selects the target resource from the sixth candidate resource set.

[0276] Specifically, the first terminal can first initialize the candidate resource set on each first carrier to obtain the initial candidate resource set on each first carrier. The initial candidate resource set here can represent the candidate resource set that has not been excluded. Then, based on the initial candidate resource set on each first carrier, the candidate resources that overlap in the time domain within the first time window on each first carrier are determined as the fifth candidate resource set.

[0277] The first terminal then excludes resources in the fifth candidate resource set that overlap with the target candidate resource, and determines the sixth candidate resource set that does not have a transmission / reception conflict, so that the first terminal can select the target resource from the sixth candidate resource set.

[0278] For example, the first terminal can determine the sixth candidate resource set based on at least one of the following:

[0279] i. If, within the first time window, the first terminal finds that a target candidate resource on one carrier overlaps with the position of a candidate resource on at least one other carrier's PSFCH or S-SSB, then the resource overlapping with the target candidate resource in the fifth candidate resource set will be excluded.

[0280] ii. If, within the first time window, a target candidate resource on one carrier overlaps with the position of a candidate resource of at least one PSFCH, PSSCH, or S-SSB to be received on another carrier, the resource overlapping with the target candidate resource in the fifth candidate resource set shall be excluded.

[0281] iii. Within the first time window, the first terminal excludes resources in the third time period from the fifth candidate resource set;

[0282] iv. If the seventh resource on a carrier of the second terminal (the corresponding transmitter is the first terminal) overlaps with the first transmission resource of the second terminal on at least one other carrier, the second terminal informs the first terminal of the first message through higher layer notification or signaling. If the seventh resource is within the first time window, the first terminal excludes the resources in the fifth candidate resource set that overlap with the seventh resource within the first time window.

[0283] v. If the second terminal has an eighth resource on a carrier (the corresponding transmitter is the first terminal) that overlaps with the second transmission resource detected by the second terminal (the third terminal) on at least one other carrier, and if the eighth resource is within the first time window, the first terminal will exclude the resources in the fifth candidate resource set that overlap with the eighth resource within the first time window.

[0284] Optionally, the implementation method by which the first terminal excludes resources in the fifth candidate resource set that overlap with the first overlapping resources to determine the sixth candidate resource set may include at least one of the following:

[0285] If there are resources in the fifth candidate resource set that overlap with the target candidate resource, and the priority of the SL data to be sent by the first terminal is higher or lower than the priority of the first reference resource, the first terminal will exclude the resources in the fifth candidate resource set that overlap with the target candidate resource and determine the sixth candidate resource set.

[0286] If there are resources in the fifth candidate resource set that overlap with the target candidate resource, and the first terminal detects that the RSRP of the PSCCH is greater than the third threshold and / or the RSRP of the PSSCH scheduled by the PSCCH is greater than the third threshold, and the reserved resources indicated by the resource reservation information in the SCI transmitted in the PSCCH overlap with the target candidate resource, the first terminal will exclude the resources in the fifth candidate resource set that overlap with the target candidate resource and determine the sixth candidate resource set.

[0287] Optionally, the implementation method for the first terminal to perform the target operation on resources on N1 first carriers based on the first information may include:

[0288] Step 1: The first terminal determines the target sequence for executing the target operations on each first carrier based on the target parameters;

[0289] Optionally, the target parameter includes at least one of the following:

[0290] 1) Priority of SL data;

[0291] Specifically, the priority of transmitting the above-mentioned SL data, for example, prioritizing the target operation for carriers with higher priority for mapped transmission data.

[0292] 2) Types of SL data.

[0293] Specifically, for the type of SL data transmitted, such as carriers whose mapped transmission data type is unicast, multicast, or broadcast, target operations are prioritized.

[0294] In one embodiment, the priority for resource selection is: unicast > multicast > broadcast.

[0295] Step 2: The first terminal performs the target operation for each first carrier based on the target sequence;

[0296] Optionally, the target order can be predefined by the protocol, configured by the network, or pre-configured by the network, or it can be determined by the first terminal.

[0297] Optionally, the aforementioned first information may include at least one of the following:

[0298] 1) The resources of the first terminal on at least one first carrier overlap with the resources of the first terminal on N2 second carriers;

[0299] 2) Received indication information; the indication information is used to indicate that the first receiving resource of the second terminal on the first carrier overlaps with the first transmitting resource of the second terminal on N4 fourth carriers, and / or, the indication information is used to indicate that the first receiving resource of the second terminal on the first carrier overlaps with the second transmitting resource of the third terminal detected by the second terminal on N5 fifth carriers; the SL data transmitting end corresponding to the first receiving resource is the first terminal.

[0300] Optionally, the above indication information may include at least one of the following:

[0301] 1) Information used to indicate the first carrier corresponding to the first reception resource;

[0302] 2) Information used to indicate the first transmission resource;

[0303] 3) Information used to indicate overlapping resources between the first receiving resource and the first transmitting resource;

[0304] 4) Information used to indicate the second transmission resource;

[0305] 5) Information used to indicate overlapping resources between the first receiving resource and the second transmitting resource.

[0306] Optionally, if the first event is satisfied, the first terminal performs resource reselection from the target carrier to other carriers; wherein the first event includes at least one of the following:

[0307] 1) The cumulative number of negative acknowledgements (NACKs) on the target carrier exceeds the first threshold;

[0308] 2) The number of consecutive NACKs on the target carrier exceeds the second threshold;

[0309] 3) The Channel State Information (CSI) on the target carrier is below the third threshold.

[0310] It should be noted that the first threshold, the second threshold, and the third threshold can be the same or different.

[0311] Optionally, if the second event is satisfied, the first terminal triggers resource reselection for one or more first carriers; wherein the second event includes at least one of the following:

[0312] a) There exists a PSFCH corresponding to at least one target resource on at least one first carrier that overlaps with a reserved resource on at least one other carrier;

[0313] b) There exists a PSFCH corresponding to at least one target resource on at least one first carrier that overlaps with a reserved resource on at least one other carrier;

[0314] c) There is an overlap between at least one target resource on at least one first carrier and resources to be received on at least one other carrier;

[0315] d) There exists at least one third resource in the first resource set that overlaps with at least one fourth resource in the first resource set;

[0316] Optionally, the third and fourth resources can be mapped onto different carriers.

[0317] e) There exists a PSFCH corresponding to at least one resource in at least one second resource set on at least one first carrier that overlaps with at least one resource in at least one second resource set on at least one other carrier;

[0318] f) There exists a PSFCH corresponding to at least one resource in at least one second resource set on at least one first carrier that overlaps with at least one resource in at least one second resource set on at least one other carrier;

[0319] g) There exists at least one fifth resource in at least one first resource set that does not belong to the candidate resource set, or there exists at least one fifth resource in at least one first resource set that does not belong to the candidate resource set of the carrier in which the fifth resource is located;

[0320] h) There exists at least one sixth resource in at least one second resource set on at least one first carrier that does not belong to the candidate resource set, or there exists at least one sixth resource in at least one second resource set on at least one first carrier that does not belong to the candidate resource set of the carrier in which the sixth resource is located.

[0321] Optionally, an implementation in which at least one target resource on at least one first carrier overlaps with the PSFCH corresponding to reserved resources on at least one other carrier may include at least one of the following:

[0322] 1) There exists a PSFCH corresponding to at least one target resource on at least one first carrier that overlaps with a reserved resource on at least one other carrier, and the priority of the target resource is higher or lower than the priority of the reserved resource on at least one other carrier;

[0323] 2) There exists a PSFCH corresponding to at least one target resource on at least one first carrier and a reserved resource on at least one other carrier, and the first terminal detects that the RSRP of the PSCCH is greater than the fourth threshold within the fifth time window, and / or the RSRP of the PSSCH scheduled by the PSCCH is greater than the fourth threshold, and the reserved resource indicated by the resource reservation information in the SCI transmitted in the PSCCH overlaps with the target resource.

[0324] Optionally, an implementation in which the PSFCH corresponding to the target resource on at least one first carrier overlaps with the reserved resources on at least one other carrier may include at least one of the following:

[0325] 1) There exists a PSFCH corresponding to at least one target resource on at least one first carrier that overlaps with a reserved resource on at least one other carrier, and the priority of the target resource is higher or lower than the priority of the reserved resource on at least one other carrier;

[0326] 2) There exists a PSFCH corresponding to at least one target resource on at least one first carrier that overlaps with a reserved resource on at least one other carrier, and the first terminal detects that the RSRP of the PSCCH is greater than the fifth threshold within the sixth time window, and / or the RSRP of the PSSCH scheduled by the PSCCH is greater than the fifth threshold, and the reserved resource indicated by the resource reservation information in the SCI transmitted in the PSCCH overlaps with the target resource.

[0327] Optionally, an implementation in which at least one target resource on at least one first carrier overlaps with resources to be received on at least one other carrier may include at least one of the following:

[0328] 1) There exists at least one target resource on at least one first carrier that overlaps with resources to be received on at least one other carrier, and the priority of the target resource is higher or lower than the priority of the resources to be received on at least one other carrier;

[0329] 2) There exists at least one target resource on at least one first carrier that overlaps with resources to be received on at least one other carrier, and the first terminal detects that the RSRP of the PSCCH is greater than the sixth threshold within the seventh time window, and / or the RSRP of the PSSCH scheduled by the PSCCH is greater than the sixth threshold, and the reserved resources indicated by the resource reservation information in the SCI transmitted in the PSCCH overlap with the target resources.

[0330] Optionally, an implementation in which at least one third resource in the first resource set overlaps with at least one fourth resource in the first resource set via a PSFCH may include at least one of the following:

[0331] 1) There exists an overlap between at least one third resource in at least one first resource set indicated by a higher level and at least one fourth resource in the first resource set corresponding to a PSFCH;

[0332] 2) There exists at least one third resource in the first resource set that overlaps with at least one fourth resource in the first resource set, and the priority of the third resource is higher or lower than the priority of the fourth resource.

[0333] 3) There exists at least one third resource in the first resource set that overlaps with at least one fourth resource in the first resource set, and the first terminal detects that the RSRP of the PSCCH is greater than the seventh threshold within the eighth time window, and / or the RSRP of the PSSCH scheduled by the PSCCH is greater than the seventh threshold, and the reserved resource indicated by the resource reservation information in the SCI transmitted in the PSCCH overlaps with the third resource.

[0334] Optionally, an implementation in which at least one resource in at least one second resource set on at least one first carrier overlaps with at least one resource in at least one second resource set on at least one other carrier may include at least one of the following:

[0335] 1) There is an overlap between the PSFCH of at least one resource in at least one second resource set on at least one first carrier as indicated by the higher layer and the PSFCH of at least one resource in at least one second resource set on at least one other carrier;

[0336] 2) There exists a PSFCH corresponding to at least one resource in at least one second resource set on at least one first carrier that overlaps with at least one resource in at least one second resource set on at least one other carrier, and the priority of at least one resource in the second resource set on one first carrier is higher or lower than the priority of at least one resource in the second resource set on at least one other carrier.

[0337] 3) There exists a PSFCH corresponding to at least one resource in at least one second resource set on at least one first carrier that overlaps with at least one resource in at least one second resource set on at least one other carrier, and the first terminal detects that the RSRP of the PSCCH is greater than the eighth threshold within the ninth time window, and / or the RSRP of the PSSCH scheduled by the PSCCH is greater than the eighth threshold, and the reserved resource indicated by the resource reservation information in the SCI transmitted in the PSCCH overlaps with at least one resource in the second resource set on a first carrier.

[0338] Optionally, an implementation in which the PSFCH corresponding to at least one resource in at least one second resource set on at least one first carrier overlaps with at least one resource in at least one second resource set on at least one other carrier may include at least one of the following:

[0339] 1) There exists a PSFCH corresponding to at least one resource in at least one second resource set on at least one first carrier as indicated by a higher layer that overlaps with at least one resource in at least one second resource set on at least one other carrier;

[0340] 2) There exists a PSFCH corresponding to at least one resource in at least one second resource set on at least one first carrier that overlaps with at least one resource in at least one second resource set on at least one other carrier, and the priority of at least one resource in the second resource set on one first carrier is higher or lower than the priority of at least one resource in the second resource set on at least one other carrier.

[0341] 3) There exists a PSFCH corresponding to at least one resource in at least one second resource set on at least one first carrier that overlaps with at least one resource in at least one second resource set on at least one other carrier, and the first terminal detects that the RSRP of the PSCCH is greater than the ninth threshold within the tenth time window, and / or the RSRP of the PSSCH scheduled by the PSCCH is greater than the ninth threshold, and the reserved resource indicated by the resource reservation information in the SCI transmitted in the PSCCH overlaps with at least one resource in the second resource set on a first carrier.

[0342] For example, when the first terminal is reassessing or preempting resources, it can trigger resource reselection based on at least one of the following:

[0343] a) If there is a PSFCH corresponding to a resource already reserved on one carrier that overlaps with a resource already reserved on at least one other carrier, then the first terminal triggers resource reselection on that carrier, or triggers resource reselection on all carriers.

[0344] In one embodiment, the first terminal will trigger resource reselection only if the priority of the resources already reserved on the carrier is higher or lower than the priority of the resources already reserved on at least one other carrier; otherwise, it will not trigger it.

[0345] In one embodiment, the first terminal will only trigger resource reselection if the measured RSRP is greater than the fourth threshold; otherwise, it will not trigger it.

[0346] b) If the PSFCH corresponding to at least one target resource on at least one first carrier overlaps with the reserved resources on at least one other carrier, the first terminal triggers resource reselection on that carrier, or triggers resource reselection on all carriers.

[0347] In one embodiment, the first terminal will trigger resource reselection only if the priority of the resources already reserved on the carrier is higher or lower than the priority of the resources already reserved on at least one other carrier; otherwise, it will not trigger it.

[0348] In one embodiment, the first terminal will only trigger resource reselection if the measured RSRP is greater than the fifth threshold; otherwise, it will not trigger it.

[0349] c) If there is a resource already reserved on a carrier that overlaps with a resource to be received on at least one other carrier, the first terminal triggers resource reselection on that carrier, or triggers resource reselection on all carriers.

[0350] In one embodiment, the first terminal will trigger resource reselection only if the priority of the resources already reserved on the carrier is higher or lower than the priority of the resources to be received on at least one other carrier; otherwise, it will not trigger it.

[0351] In one embodiment, the first terminal will only trigger resource reselection if the measured RSRP meets the sixth threshold; otherwise, it will not trigger it.

[0352] d) If there is an overlap between the PSFCH corresponding to the third resource in the first resource set and the fourth resource in the first resource set, the first terminal triggers resource reselection on the carrier where the third resource is located, or triggers resource reselection on all carriers, wherein the third resource and the fourth resource are mapped on different carriers.

[0353] In one embodiment, the aforementioned first resource set may be directed by a higher level.

[0354] In one embodiment, the first terminal will only trigger resource reselection if the priority of the third resource is higher or lower than the priority of the fourth resource; otherwise, it will not trigger it.

[0355] In one embodiment, the first terminal will only trigger resource reselection if the measured RSRP meets the seventh threshold; otherwise, it will not trigger it.

[0356] e) If at least one resource in the second resource set on a carrier overlaps with the PSFCH corresponding to at least one resource in the second resource set on at least one other carrier, then resource reselection on that carrier is triggered, or resource reselection on all carriers is triggered.

[0357] In one embodiment, the aforementioned second resource set may be indicated by a higher layer, i.e., a second resource set including individual carriers or certain carriers may be indicated by a higher layer.

[0358] In one embodiment, the first terminal will trigger resource reselection only if the priority of at least one resource in the second resource set on the carrier is higher or lower than the priority of at least one resource in the second resource set on at least one other carrier; otherwise, it will not trigger it.

[0359] In one embodiment, the first terminal will only trigger resource reselection if the measured RSRP meets the eighth threshold; otherwise, it will not trigger it.

[0360] f) If the PSFCH corresponding to at least one resource in the second resource set on one carrier overlaps with at least one resource in the second resource set on at least one other carrier, then the first terminal triggers resource reselection on that carrier, or triggers resource reselection on all carriers.

[0361] In one embodiment, the aforementioned second resource set may be indicated by a higher layer, i.e., a second resource set including individual carriers or certain carriers may be indicated by a higher layer.

[0362] In one embodiment, the first terminal will trigger resource reselection only if the priority of the PSFCH corresponding to at least one resource in the second resource set on the carrier is higher or lower than the priority of at least one resource in the second resource set on at least one other carrier; otherwise, it will not trigger it.

[0363] In one embodiment, the first terminal will only trigger resource reselection if the measured RSRP meets the ninth threshold; otherwise, it will not trigger it.

[0364] g) If at least one fifth resource in the first resource set does not belong to the candidate resource set, or if at least one fifth resource in the first resource set does not belong to the candidate resource set of the carrier where the fifth resource is located, then the first terminal triggers resource reselection of the carrier where the resource is located, or triggers resource reselection of all carriers.

[0365] h) If at least one sixth resource in the second resource set on a carrier does not belong to the candidate resource set, or if at least one sixth resource in the second resource set on a first carrier does not belong to the candidate resource set of the carrier where the sixth resource is located, then the first terminal triggers resource reselection on the carrier where the resource is located, or triggers resource reselection on all carriers.

[0366] The following example illustrates the resource selection method provided in the embodiments of this application.

[0367] 1. The first terminal is configured to perform SL transmission on CC1, CC2, and CC3. At time n, resource selection is triggered, and the first terminal selects resources on CC1, CC2, and CC3 respectively.

[0368] 1. For resource selection on CC1, the first terminal first determines the resource selection window and initializes the candidate resource set on CC1. Then, the first terminal excludes resources from the initialized candidate resource set on CC1 to determine the candidate resource set. The specific implementation method may include at least one of the following:

[0369] a) The first terminal excludes resources in CC1 that overlap with the first resources in CC2 and CC3 within the resource selection window, wherein the first resource includes at least one of the following: PSFCH resource to be received; PSSCH resource to be received; S-SSB resource to be received;

[0370] b) The first terminal excludes resources in CC1 that overlap with the third resources in CC2 and CC3 within the resource selection window, wherein the first resource includes at least one of the following: a candidate resource of PSFCH; a candidate resource of S-SSB;

[0371] c) The first terminal excludes resources in CC1 that overlap with resources in CC2 during the waiting response time within the resource selection window; wherein the first terminal initiates a CSI request on CC2 and waits to receive a CSI report during the waiting response time.

[0372] d) According to the first message, the first terminal excludes resources on the seventh resource of CC1 that overlap with the first transmission resources on CC2 and CC3 in the resource selection window, wherein the seventh resource is the resource to be received by the second terminal and the first transmission resource is the resource that the second terminal can use to transmit.

[0373] e) The first terminal excludes resources on the eighth resource of CC1 that overlap with the second transmission resources on CC2 and CC3 in the resource selection window, wherein the eighth resource is the resource to be received by the second terminal, and the second transmission resource is the resource that other terminals (e.g., the third terminal) can use to transmit.

[0374] f) The first terminal excludes resources based on the unlistened time slots within the resource selection window;

[0375] g) The first terminal excludes resources based on the first-order SCI detected.

[0376] After determining the candidate resource set on CC1, the first terminal can report the candidate resource set on CC1 to the MAC layer of the first terminal, so that the MAC layer can select the reserved resources on CC1 from the candidate resource set.

[0377] 2. For resource selection on CC2, the first terminal first determines the resource selection window and initializes the candidate resource set on CC2. Then, the first terminal excludes resources from the initialized candidate resource set on CC2 to determine the candidate resource set. The specific implementation method may include at least one of the following:

[0378] a) The first terminal excludes resources in CC2 that overlap with the first resources in CC1 and CC3 within the resource selection window, wherein the first resource includes at least one of the following: PSFCH resource to be received; PSSCH resource to be received; S-SSB resource to be received;

[0379] b) The first terminal excludes the target candidate resources in CC2 in the resource selection window. The target candidate resources are those whose corresponding PSFCH overlaps with the resources already reserved on CC1 and CC3.

[0380] c) The first terminal excludes resources in CC2 that overlap with the first resources in CC1 and CC3 within the resource selection window, wherein the first resources include at least one of the following: candidate resources of PSFCH; candidate resources of S-SSB;

[0381] d) According to the first message, the first terminal excludes the resources on the seventh resource on CC2 that overlap with the first transmission resources on CC1 and CC3 in the resource selection window, wherein the seventh resource is the resource to be received by the second terminal and the first transmission resource is the resource that the second terminal can use to transmit.

[0382] e) The first terminal excludes the eighth resource on CC2 from the resource selection window that overlaps with the second transmission resources on CC1 and CC3, wherein the eighth resource is the resource to be received by the second terminal and the second transmission resource is the resource that other terminals (e.g., the third terminal) can use to transmit.

[0383] f) The first terminal excludes resources based on the unlistened time slots within the resource selection window;

[0384] g) The first terminal excludes resources based on the first-order SCI detected in the resource selection window.

[0385] After determining the candidate resource set on CC2, the first terminal can report the candidate resource set on CC2 to the MAC layer of the first terminal, so that the MAC layer can select the reserved resources on CC2 from the candidate resource set.

[0386] 3. For resource selection on CC3, the first terminal first determines the resource selection window and initializes the candidate resource set on CC3. Then, the first terminal excludes resources from the initialized candidate resource set on CC3 to determine the candidate resource set. The specific implementation method may include at least one of the following:

[0387] a) The first terminal excludes resources in CC3 that overlap with the first resources in CC1 and CC2 within the resource selection window, wherein the first resource includes at least one of the following: PSFCH resource to be received; PSSCH resource to be received; S-SSB resource to be received;

[0388] b) The first terminal excludes the target candidate resources in CC3 in the resource selection window. The target candidate resources are those whose corresponding PSFCH overlaps with the resources already reserved on CC1 and CC2.

[0389] c) The first terminal excludes resources in CC3 that overlap with the first resources in CC1 and CC2 within the resource selection window, wherein the first resources include at least one of the following: candidate resources of PSFCH; candidate resources of S-SSB;

[0390] d) According to the first message, the first terminal excludes the resources on the seventh resource on CC3 that overlap with the first transmission resources on CC1 and CC2 in the resource selection window, wherein the seventh resource is the resource to be received by the second terminal and the first transmission resource is the resource that the second terminal can use to transmit.

[0391] e) The first terminal excludes resources in the resource selection window that overlap with the eighth resource on CC3 and the second transmission resources on CC1 and CC2, wherein the eighth resource is the resource to be received by the second terminal and the second transmission resource is the resource that other terminals (e.g., the third terminal) can use to transmit.

[0392] f) The first terminal excludes resources based on the unlistened time slots within the resource selection window;

[0393] g) The first terminal excludes resources based on the first-order SCI detected.

[0394] After determining the candidate resource set on CC3, the first terminal can report the candidate resource set on CC3 to the MAC layer of the first terminal, so that the MAC layer can select the reserved resources on CC3 from the candidate resource set.

[0395] II. The first terminal is configured to perform SL transmission on CC1, CC2, and CC3. At time n, resource selection is triggered, and the first terminal performs resource selection on CC1, CC2, and CC3 respectively.

[0396] 1. For resource selection on CC1, the first terminal first determines the resource selection window and initializes the candidate resource set on CC1. Then, the first terminal excludes resources from the initialized candidate resource set on CC1 to determine the candidate resource set. The specific implementation method may include at least one of the following:

[0397] a) The first terminal excludes resources based on the unlistened time slots within the resource selection window;

[0398] b) The first terminal excludes resources based on the first-order SCI detected.

[0399] After determining the candidate resource set on CC1, the first terminal can report the candidate resource set on CC1 to the MAC layer of the first terminal, so that the MAC layer can select reserved resources on CC1 from the candidate resource set. The specific implementation method may include at least one of the following:

[0400] 1) For resources in the candidate resource set on CC1, if there are resources that overlap with the first resources on CC2 and CC3, the MAC layer selects reserved resources from the resources other than these resources. The first resource includes at least one of the following: PSFCH resources to be received; PSSCH resources to be received; S-SSB resources to be received.

[0401] 2) For resources in the candidate resource set on CC1, if there are resources that overlap with the first resources on CC2 and CC3, the MAC layer selects reserved resources from the resources outside of these resources. The first resources include at least one of the following: candidate resources of PSFCH; candidate resources of S-SSB.

[0402] 2. For resource selection on CC2, the first terminal first determines the resource selection window and initializes the candidate resource set on CC2. Then, the first terminal excludes resources from the initialized candidate resource set on CC2 to determine the candidate resource set. The specific implementation method may include at least one of the following:

[0403] a) The first terminal excludes resources based on the unlistened time slots within the resource selection window;

[0404] b) The first terminal excludes resources based on the first-order SCI detected in the resource selection window.

[0405] After determining the candidate resource set on CC2, the first terminal can report the candidate resource set on CC2 to the MAC layer of the first terminal, so that the MAC layer can select reserved resources on CC2 from the candidate resource set. The specific implementation method may include at least one of the following:

[0406] 1) For resources in the candidate resource set on CC2, if there are resources that overlap with the first resources on CC1 and CC3, the MAC layer selects reserved resources from the resources other than these resources. The first resource includes at least one of the following: PSFCH resources to be received; PSSCH resources to be received; S-SSB resources to be received.

[0407] 2) The PSFCH corresponding to the selected reserved resource will not overlap with the resources already reserved on CC1;

[0408] 3) For resources in the candidate resource set on CC2, if there are resources that overlap with the first resources on CC1 and CC3, the MAC layer selects reserved resources from the resources outside of these resources. The first resources include at least one of the following: candidate resources of PSFCH; candidate resources of S-SSB.

[0409] 3. For resource selection on CC3, the first terminal first determines the resource selection window and initializes the candidate resource set on CC3. Then, the first terminal excludes resources from the initialized candidate resource set on CC3 to determine the candidate resource set. The specific implementation method may include at least one of the following:

[0410] a) The first terminal excludes resources based on the unlistened time slots within the resource selection window;

[0411] b) The first terminal excludes resources based on the first-order SCI detected in the resource selection window.

[0412] After determining the candidate resource set on CC3, the first terminal can report the candidate resource set on CC3 to the MAC layer of the first terminal, so that the MAC layer can select reserved resources on CC3 from the candidate resource set. The specific implementation method may include at least one of the following:

[0413] 1) For resources in the candidate resource set on CC3, if there are resources that overlap with the first resources on CC1 and CC2, the MAC layer selects reserved resources from the resources outside of these resources. The first resource includes at least one of the following: PSFCH resources to be received; PSSCH resources to be received; S-SSB resources to be received.

[0414] 2) The PSFCH corresponding to the selected reserved resources will not overlap with the resources already reserved on CC1 and CC2;

[0415] 3) For resources in the candidate resource set on CC3, if there are resources that overlap with the third resources on CC1 and CC2, the MAC layer selects reserved resources from the resources outside of these resources. The first resource includes at least one of the following: candidate resources of PSFCH; candidate resources of S-SSB.

[0416] III. The first terminal is configured to perform SL transmission on CC1, CC2, and CC3. At time n, resource selection is triggered. The first terminal first determines the resource selection window and initializes a candidate resource set to obtain a third candidate resource set, where the third candidate resource set is the intersection of the three candidate resource sets initialized by CC1, CC2, and CC3 respectively. Then, the first terminal excludes resources from the third candidate resource set to obtain a fourth candidate resource set. The specific implementation may include at least one of the following:

[0417] a) If, within the resource selection window, the first terminal finds that a target candidate resource on one carrier overlaps with the position of a candidate resource on at least one other carrier's PSFCH or S-SSB, then the resource overlapping with the target candidate resource in the third candidate resource set will be excluded.

[0418] b) If, within the resource selection window, the first terminal finds that a target candidate resource on one carrier overlaps with the position of a candidate resource of at least one PSFCH, PSSCH, or S-SSB to be received on another carrier, then the resource overlapping with the target candidate resource in the third candidate resource set will be excluded.

[0419] c) The first terminal excludes resources from the first candidate resource set that are in the third time period within the first time window;

[0420] d) If the seventh resource on a carrier of the second terminal (the corresponding transmitter is the first terminal) overlaps with the first transmission resource of the second terminal on at least one other carrier, the second terminal informs the first terminal of the first message through higher layer notification or signaling; if the seventh resource is within the first time window, the first terminal excludes the resources that overlap with the seventh resource in the third candidate resource set within the first time window.

[0421] e) If the second terminal has an eighth resource on a carrier (the corresponding transmitter is the first terminal) that overlaps with the second transmission resource detected by the second terminal on at least one other carrier by another terminal (e.g., the third terminal), and if the eighth resource is within the first time window, then the first terminal excludes the resources that overlap with the eighth resource in the third candidate resource set within the first time window.

[0422] f) The first terminal excludes resources in the third candidate resource set that overlap with the unlistened time slots in CC1, CC2 and CC3 according to the unlistened time slots in the resource selection window;

[0423] g) The first terminal excludes resources in the resource selection window based on the first-order SCIs detected on CC1, CC2 and CC3, and excludes resources in the third candidate resource set that overlap with the resources determined by the first-order SCIs detected.

[0424] After updating the third candidate resource set, the first terminal can report the updated fourth candidate resource set to the MAC layer of the first terminal, so that the MAC layer can select reserved resources from the fourth candidate resource set.

[0425] IV. The first terminal is configured to perform SL transmission on CC1, CC2, and CC3. Resource selection is triggered at time n. The first terminal first determines the resource selection window and initializes the candidate resource set to obtain a third candidate resource set, which is the intersection of the three candidate resource sets initialized for CC1, CC2, and CC3 respectively. Then, the first terminal performs resource exclusion on the third candidate resource set based on CC1, CC2, and CC3 respectively to determine the candidate resource sets for CC1, CC2, and CC3:

[0426] 1. The first terminal determines the resource selection window and initializes the candidate resource set on CC1. Then, the first terminal excludes resources from the third candidate resource set on CC1 to determine the candidate resource set. The specific implementation method may include at least one of the following:

[0427] a) The first terminal excludes resources in CC1 that overlap with the first resources in CC2 and CC3 within the resource selection window, wherein the first resource includes at least one of the following: PSFCH resource to be received; PSSCH resource to be received; S-SSB resource to be received;

[0428] b) The first terminal excludes resources in CC1 that overlap with the first resources in CC2 and CC3 within the resource selection window, wherein the first resources include at least one of the following: candidate resources of PSFCH; candidate resources of S-SSB;

[0429] c) The first terminal excludes resources that overlap with the resources on CC1 and CC2 during the waiting response time in the resource selection window, wherein the first terminal initiates a CSI request on CC2 and waits to receive a CSI report during the waiting response time.

[0430] d) According to the first message, the first terminal excludes resources on the seventh resource of CC1 that overlap with the first transmission resources on CC2 and CC3 in the resource selection window, wherein the seventh resource is the resource to be received by the second terminal and the first transmission resource is the resource that the second terminal can use to transmit.

[0431] e) The first terminal excludes resources on the eighth resource of CC1 that overlap with the second transmission resources on CC2 and CC3 in the resource selection window, wherein the eighth resource is the resource to be received by the second terminal, and the second transmission resource is the resource that other terminals (e.g., the third terminal) can use to transmit.

[0432] f) The first terminal excludes resources based on the unlistened time slots within the resource selection window;

[0433] g) The first terminal excludes resources based on the first-order SCI detected.

[0434] 2. The first terminal determines the resource selection window and initializes the candidate resource set on CC2. Then, the first terminal excludes resources from the third candidate resource set on CC2 to determine the candidate resource set. The specific implementation method may include at least one of the following:

[0435] a) The first terminal excludes resources in CC2 that overlap with the first resources in CC1 and CC3 within the resource selection window, wherein the first resource includes at least one of the following: PSFCH resource to be received; PSSCH resource to be received; S-SSB resource to be received;

[0436] b) The first terminal excludes the target candidate resources in CC2 in the resource selection window, where the target candidate resources are those whose corresponding PSFCH overlaps with the resources already reserved on CC1;

[0437] c) The first terminal excludes resources in CC2 that overlap with the first resources in CC1 and CC3 within the resource selection window, wherein the first resources include at least one of the following: candidate resources of PSFCH; candidate resources of S-SSB;

[0438] d) According to the first message, the first terminal excludes resources on the seventh resource of CC2 that overlap with the first transmission resources on CC1 and CC3 in the resource selection window, wherein the seventh resource is the resource to be received by the second terminal and the first transmission resource is the resource that the second terminal can use to transmit.

[0439] e) The first terminal excludes the eighth resource on CC2 from the resource selection window that overlaps with the second transmission resources on CC1 and CC3, wherein the eighth resource is the resource to be received by the second terminal and the second transmission resource is the resource that other terminals (e.g., the third terminal) can use to transmit.

[0440] f) The first terminal excludes resources based on the unlistened time slots within the resource selection window;

[0441] g) The first terminal excludes resources based on the first-order SCI detected in the resource selection window.

[0442] 3. The first terminal determines the resource selection window and initializes the candidate resource set on CC3. Then, the first terminal excludes resources from the third candidate resource set on CC3 to determine the candidate resource set. The specific implementation method may include at least one of the following:

[0443] a) The first terminal excludes resources in CC3 that overlap with the first resources in CC1 and CC2 within the resource selection window, wherein the first resource includes at least one of the following: PSFCH resource to be received; PSSCH resource to be received; S-SSB resource to be received;

[0444] b) The first terminal excludes the target candidate resources in CC3 in the resource selection window, where the target candidate resources are those whose corresponding PSFCH overlaps with the resources already reserved on CC1 and CC2;

[0445] c) The first terminal excludes resources in CC3 that overlap with the first resources in CC1 and CC2 within the resource selection window, wherein the first resources include at least one of the following: candidate resources of PSFCH; candidate resources of S-SSB;

[0446] d) According to the first message, the first terminal excludes resources on the seventh resource of CC3 that overlap with the first transmission resources on CC1 and CC2 in the resource selection window, wherein the seventh resource is the resource to be received by the second terminal and the first transmission resource is the resource that the second terminal can use to transmit.

[0447] e) The first terminal excludes resources on the eighth resource of CC3 that overlap with the second transmission resources on CC1 and CC2 within the resource selection window, wherein the eighth resource is the resource to be received by the second terminal, and the second transmission resource is the resource that other terminals (e.g., the third terminal) can use to transmit.

[0448] f) The first terminal excludes resources based on the unlistened time slots within the resource selection window;

[0449] g) The first terminal excludes resources based on the first-order SCI detected.

[0450] After determining the candidate resource set on CC3, the first terminal can report the candidate resource set on CC3 to the MAC layer of the first terminal, so that the MAC layer can select the reserved resources on CC3 from the candidate resource set.

[0451] After determining the candidate resource sets CC1, CC2, and CC3, the first terminal can report the resources in the third candidate resource set that overlap with the first intersection resources to the MAC layer of the first terminal. The first intersection resources are the resources that have intersection in the candidate resource sets of CC1, CC2, and CC3, so that the MAC layer can select reserved resources from the candidate resource sets.

[0452] The resource selection method provided in this application can be executed by a resource selection device. This application uses the example of a resource selection device executing the resource selection method to illustrate the resource selection device provided in this application.

[0453] Figure 4 This is a schematic diagram of the structure of the resource selection device provided in the embodiments of this application, as shown below. Figure 4 As shown, the resource selection device 400 includes:

[0454] The determination module 401 is used to perform target operation on resources on N1 first carriers based on first information, and determine target resources on one or more first carriers;

[0455] The target operation includes at least one of the following: resource selection, resource reselection, resource reassessment, and resource preemption; the first information is information on target candidate resources on N1 first carriers; the target candidate resources overlap with the first reference resources, and / or the physical sidelink feedback channel (PSFCH) corresponding to the target candidate resources overlaps with the second reference resources;

[0456] The first reference resource includes at least one of the following:

[0457] The first terminal has its first resources on N2 second carriers;

[0458] The PSFCH resources corresponding to the reserved resources of the first terminal on N3 third carriers;

[0459] The second terminal has a first transmission resource on N4 fourth carriers, and the second terminal is the side link SL data receiving end corresponding to the target resource;

[0460] The second terminal detects the second transmission resources of the third terminal on N5 fifth carriers;

[0461] The second reference resource includes at least one of the following:

[0462] The second resources of the first terminal on N6 sixth carriers;

[0463] The first terminal has reserved resources on N7 seventh carriers.

[0464] In the resource selection apparatus provided in this application embodiment, when the target candidate resource overlaps with the first reference resource, and / or the PSFCH corresponding to the target candidate resource overlaps with the second reference resource, the determining module can perform target operations on the resources of the N1 first carriers based on the first information of the target candidate resources on the N1 first carriers, so as to determine the target resources on one or more first carriers. This application embodiment considers overlapping target candidate resources when determining the target resources on the first carriers, thereby resolving the transmit / receive conflict problem on different carriers in carrier aggregation scenarios and improving SL transmission performance.

[0465] Optionally, the determining module 401 is specifically used to exclude the target candidate resources on the first carrier within a first time window for any first carrier, and determine the first candidate resource set on the first carrier;

[0466] The determining module 401 is further specifically configured to select the target resource from the first candidate resource set.

[0467] Optionally, the determining module 401 is further configured to preferentially select resources that overlap in the time domain on multiple first carriers from the first candidate resource set as the target resource.

[0468] Optionally, the determining module 401 is further configured to report a second candidate resource set to the higher layers; the second candidate resource set includes candidate resource sets on all first carriers;

[0469] The determining module 401 is also specifically used to select the target resource from the second candidate resource set based on the first information.

[0470] Optionally, the determining module 401 is also specifically used to report one or more candidate resource sets on the first carrier to the higher layers;

[0471] The determining module 401 is further specifically used to merge the candidate resource sets on one or more first carriers to obtain a second candidate resource set;

[0472] The determining module 401 is also specifically used to select the target resource from the second candidate resource set based on the first information.

[0473] Optionally, the determining module 401 is further configured to merge the resources within the first time window in the candidate resource set on one or more first carriers to obtain the second candidate resource set.

[0474] Optionally, the determining module 401 is further specifically used to report a second candidate resource set to the higher layer; the second candidate set includes candidate resource sets on all first carriers, and the candidate resource set on first carriers that have not triggered resource selection or resource reselection is empty;

[0475] The determining module 401 is also specifically used to select the target resource from the second candidate resource set based on the first information.

[0476] Optionally, the determining module 401 is further specifically configured to report one or more candidate resource sets on the first carrier to the higher layer, and the first terminal does not report the candidate resource sets on the first carrier that have not triggered resource selection or resource reselection to the higher layer; or, the first terminal reports one or more candidate resource sets on the first carrier to the higher layer, and the candidate resource sets on the first carrier that have not triggered resource selection or resource reselection reported by the first terminal to the higher layer are empty;

[0477] The determining module 401 is further specifically used to determine a second candidate resource set based on the reported candidate resource set on one or more first carriers;

[0478] The determining module 401 is also specifically used to select the target resource from the second candidate resource set based on the first information.

[0479] Optionally, the determining module 401 is further specifically used to report to the higher layers one or more candidate resource sets on the first carrier, as well as the first information;

[0480] The determining module 401 is further specifically used to determine a second candidate resource set based on the reported candidate resource set on one or more first carriers;

[0481] The determining module 401 is also specifically used to select the target resource from the second candidate resource set based on the first information.

[0482] Optionally, the determining module 401 is also specifically configured to perform at least one of the following operations:

[0483] The first terminal selects a resource from the second candidate resource set that does not overlap with the first reference resource as the target resource;

[0484] The first terminal selects the target resource from the resources in the second candidate resource set, excluding the target candidate resource.

[0485] The first terminal selects the target candidate resource as the target resource from the second candidate resource set according to the lowest priority.

[0486] The first terminal selects, from the second candidate resource set, resources that do not overlap with the first reference resource and which overlap in the time domain on multiple first carriers as the target resource.

[0487] Optionally, the determining module 401 is further configured to determine a third candidate resource set based on the initial candidate resource set on each of the first carriers; the third candidate resource set includes the intersection or union of the initial candidate resource sets on each of the first carriers.

[0488] The determining module 401 is further specifically used to exclude resources in the third candidate resource set that overlap with the target candidate resource, and to determine the fourth candidate resource set;

[0489] The determining module 401 is also specifically used to select the target resource from the fourth candidate resource set.

[0490] Optionally, the determining module 401 is also specifically configured to perform at least one of the following operations:

[0491] If there are resources in the third candidate resource set that overlap with the target candidate resource, and the priority of the SL data to be sent by the first terminal is higher or lower than the priority of the first reference resource, the first terminal will exclude the resources in the third candidate resource set that overlap with the target candidate resource and determine the fourth candidate resource set.

[0492] If there are resources in the third candidate resource set that overlap with the target candidate resource, and the first terminal detects that the Reference Signal Received Power (RSRP) of the Physical Sidelink Control Channel (PSCCH) is greater than the first threshold within the second time window, and / or the RSRP of the Physical Sidelink Shared Channel (PSSCH) scheduled by the PSCCH is greater than the first threshold, and the reserved resources indicated by the resource reservation information in the Sidelink Control Information (SCI) transmitted in the PSCCH overlap with the target candidate resource, the first terminal will exclude the resources in the third candidate resource set that overlap with the target candidate resource and determine the fourth candidate resource set.

[0493] Optionally, the determining module 401 is further configured to preferentially select resources that overlap in the time domain on multiple first carriers from the fourth candidate resource set as the target resource.

[0494] Optionally, the determining module 401 is further configured to determine a third candidate resource set based on the initial candidate resource set on each of the first carriers; the third candidate resource set includes the intersection or union of the initial candidate resource sets on each of the first carriers.

[0495] The determining module 401 is also specifically used to, for any first carrier, exclude the target candidate resources on the first carrier within a first time window, and determine the first candidate resource set on the first carrier;

[0496] The determining module 401 is further specifically configured to select the target resource from the resources in the third candidate resource set that overlap with the first intersection resource; the first intersection resource is the resource in the first candidate resource set on each first carrier that has an intersection.

[0497] Optionally, the determining module 401 is also specifically configured to perform at least one of the following operations:

[0498] For any first carrier, if the target candidate resource exists on the first carrier within the first time window, and the priority of the SL data to be transmitted by the first terminal is higher or lower than the priority of the first reference resource, the first terminal excludes the target candidate resource on the first carrier within the first time window and determines the first candidate resource set on the first carrier.

[0499] For any first carrier, if the target candidate resource exists on the first carrier within the first time window, and the first terminal detects that the RSRP of the PSCCH is greater than the second threshold and / or the RSRP of the PSSCH scheduled by the PSCCH is greater than the second threshold within the third time window, and the reserved resource indicated by the resource reservation information in the SCI transmitted in the PSCCH overlaps with the target candidate resource, the first terminal excludes the target candidate resource on the first carrier within the first time window and determines the first candidate resource set on the first carrier.

[0500] Optionally, the determining module 401 is further configured to preferentially select, from the resources in the third candidate resource set that overlap with the first intersection resources, the resources that overlap in the time domain on multiple first carriers as the target resources.

[0501] Optionally, the target resource includes both the initial transmission resource and the retransmission resource of the same SL data to be transmitted on at least one carrier.

[0502] Optionally, the determining module 401 is further specifically configured to determine the third candidate resource set based on the initial candidate resource set on each of the first carriers that satisfies the target condition;

[0503] The target condition includes at least one of the following:

[0504] The subcarrier spacing (SCS) of each carrier is the same;

[0505] The HARQ (Hybrid Automatic Repeat Request) configuration is the same for the resource pools of each carrier;

[0506] The PSFCH configuration is the same for the resource pools of each carrier.

[0507] Optionally, the determining module 401 is further specifically configured to determine a fifth candidate resource set based on the initial candidate resource set on each of the first carriers; the fifth candidate resource set includes candidate resources that overlap in the time domain on each of the first carriers within a first time window;

[0508] The determining module 401 is further specifically used to exclude resources in the fifth candidate resource set that overlap with the target candidate resource, and to determine the sixth candidate resource set;

[0509] The determining module 401 is also specifically used to select the target resource from the sixth candidate resource set.

[0510] Optionally, the determining module 401 is also specifically configured to perform at least one of the following operations:

[0511] If there are resources in the fifth candidate resource set that overlap with the target candidate resource, and the priority of the SL data to be sent by the first terminal is higher or lower than the priority of the first reference resource, the first terminal will exclude the resources in the fifth candidate resource set that overlap with the target candidate resource and determine the sixth candidate resource set.

[0512] If there are resources in the fifth candidate resource set that overlap with the target candidate resource, and the first terminal detects that the RSRP of the PSCCH is greater than the third threshold and / or the RSRP of the PSSCH scheduled by the PSCCH is greater than the third threshold within the fourth time window, and the reserved resources indicated by the resource reservation information in the SCI transmitted in the PSCCH overlap with the target candidate resource, the first terminal will exclude the resources in the fifth candidate resource set that overlap with the target candidate resource and determine the sixth candidate resource set.

[0513] Optionally, the first resource includes at least one of the following:

[0514] PSFCH resources to be received;

[0515] PSSCH resources to be received;

[0516] S-SSB resources to be received;

[0517] PSFCH candidate resources;

[0518] Candidate resources for S-SSB;

[0519] Resources within a third time period; the third time period is the time during which the first terminal waits for a response message after sending a request message, or the running time of a timer, wherein the running time of the timer is used to continuously monitor the response message after the first terminal sends a request message.

[0520] Optionally, the second resource includes at least one of the following:

[0521] PSFCH resources to be sent;

[0522] PSSCH resources to be sent;

[0523] S-SSB resources to be sent;

[0524] PSFCH candidate resources;

[0525] Candidate resources for S-SSB.

[0526] Optionally, the first transmission resource and / or the second transmission resource includes at least one of the following:

[0527] Periodic and / or non-periodic reserved resources are used for sending SL data;

[0528] Resources of the PSFCH to be sent;

[0529] Resources for PSSCH to be sent;

[0530] Resources of S-SSB to be sent.

[0531] Optionally, the determining module 401 is further specifically used to determine the target order of performing the target operation on each of the first carriers based on the target parameters;

[0532] The determining module 401 is further specifically configured to perform target operations on each of the first carriers based on the target sequence;

[0533] The target parameter includes at least one of the following:

[0534] Priority of SL data;

[0535] The type of SL data.

[0536] Optionally, the first information includes at least one of the following:

[0537] The resources of the first terminal on at least one first carrier overlap with the resources of the first terminal on N2 second carriers;

[0538] The received indication information; the indication information is used to indicate that the first receiving resource of the second terminal on the first carrier overlaps with the first transmitting resource of the second terminal on N4 fourth carriers, and / or, the indication information is used to indicate that the first receiving resource of the second terminal on the first carrier overlaps with the second transmitting resource of the third terminal detected by the second terminal on N5 fifth carriers; the SL data transmitting end corresponding to the first receiving resource is the first terminal.

[0539] Optionally, the indication information includes at least one of the following:

[0540] Information used to indicate the first carrier corresponding to the first receiving resource;

[0541] Information used to indicate the first sending resource;

[0542] Information used to indicate resources that overlap between the first receiving resource and the first sending resource;

[0543] Information used to indicate the second sending resource;

[0544] Information used to indicate overlapping resources between the first receiving resource and the second sending resource.

[0545] Optionally, the determining module 401 is further specifically configured to, upon satisfying the first event, have the first terminal perform resource reselection from the target carrier to other carriers;

[0546] The first event includes at least one of the following:

[0547] The cumulative number of negative acknowledgments (NACKs) on the target carrier exceeds the first threshold.

[0548] The number of consecutive NACKs on the target carrier exceeds the second threshold;

[0549] The Channel State Information (CSI) on the target carrier is below the third threshold.

[0550] Optionally, the determining module 401 is further configured to, upon satisfying a second event, trigger resource reselection for one or more first carriers by the first terminal; wherein the second event includes at least one of the following:

[0551] There is an overlap between at least one target resource on at least one first carrier and the PSFCH corresponding to reserved resources on at least one other carrier;

[0552] There exists a PSFCH corresponding to at least one target resource on at least one first carrier that overlaps with a reserved resource on at least one other carrier;

[0553] There exists at least one target resource on at least one first carrier that overlaps with resources to be received on at least one other carrier;

[0554] There exists at least one third resource in the first resource set that overlaps with at least one fourth resource in the first resource set;

[0555] There exists a PSFCH corresponding to at least one resource in at least one second resource set on at least one first carrier that overlaps with at least one resource in at least one second resource set on at least one other carrier;

[0556] There exists a PSFCH corresponding to at least one resource in at least one second resource set on at least one first carrier that overlaps with at least one resource in at least one second resource set on at least one other carrier;

[0557] There exists at least one fifth resource in at least one first resource set that does not belong to the candidate resource set, or there exists at least one fifth resource in at least one first resource set that does not belong to the candidate resource set of the carrier in which the fifth resource is located;

[0558] There exists at least one sixth resource in at least one second resource set on at least one first carrier that does not belong to the candidate resource set, or there exists at least one sixth resource in at least one second resource set on at least one first carrier that does not belong to the candidate resource set of the carrier in which the sixth resource is located.

[0559] Optionally, the determining module 401 is also specifically configured to perform at least one of the following operations:

[0560] There exists a PSFCH corresponding to at least one target resource on at least one first carrier that overlaps with a reserved resource on at least one other carrier, and the priority of the target resource is higher or lower than the priority of the reserved resource on the at least one other carrier;

[0561] There exists a PSFCH corresponding to at least one target resource on at least one first carrier that overlaps with a reserved resource on at least one other carrier, and the first terminal detects that the RSRP of the PSCCH is greater than the fourth threshold within the fifth time window, and / or the RSRP of the PSSCH scheduled by the PSCCH is greater than the fourth threshold, and the reserved resource indicated by the resource reservation information in the SCI transmitted in the PSCCH overlaps with the target resource.

[0562] Optionally, the determining module 401 is also specifically configured to perform at least one of the following operations:

[0563] There exists a PSFCH corresponding to at least one target resource on at least one first carrier that overlaps with a reserved resource on at least one other carrier, and the priority of the target resource is higher or lower than the priority of the reserved resource on the at least one other carrier;

[0564] There exists a PSFCH corresponding to at least one target resource on at least one first carrier that overlaps with reserved resources on at least one other carrier, and the first terminal detects that the RSRP of the PSCCH is greater than the fifth threshold within the sixth time window, and / or the RSRP of the PSSCH scheduled by the PSCCH is greater than the fifth threshold, and the reserved resource indicated by the resource reservation information in the SCI transmitted in the PSCCH overlaps with the target resource.

[0565] Optionally, the determining module 401 is also specifically configured to perform at least one of the following operations:

[0566] There exists at least one target resource on at least one first carrier that overlaps with resources to be received on at least one other carrier, and the priority of the target resource is higher or lower than the priority of the resources to be received on the at least one other carrier;

[0567] There exists at least one target resource on at least one first carrier that overlaps with resources to be received on at least one other carrier, and the first terminal detects that the RSRP of the PSCCH is greater than the sixth threshold within the seventh time window, and / or the RSRP of the PSSCH scheduled by the PSCCH is greater than the sixth threshold, and the reserved resource indicated by the resource reservation information in the SCI transmitted in the PSCCH overlaps with the target resource.

[0568] Optionally, the determining module 401 is also specifically configured to perform at least one of the following operations:

[0569] There exists a PSFCH overlap between at least one third resource in at least one first resource set as indicated by a higher level and at least one fourth resource in the first resource set;

[0570] There exists at least one third resource in at least one first resource set that overlaps with at least one fourth resource in the first resource set, and the priority of the third resource is higher or lower than the priority of the fourth resource.

[0571] There exists at least one third resource in at least one first resource set that overlaps with at least one fourth resource in the first resource set, and the first terminal detects that the RSRP of the PSCCH is greater than the seventh threshold within the eighth time window, and / or the RSRP of the PSSCH scheduled by the PSCCH is greater than the seventh threshold, and the reserved resource indicated by the resource reservation information in the SCI transmitted in the PSCCH overlaps with the third resource.

[0572] Optionally, the determining module 401 is also specifically configured to perform at least one of the following operations:

[0573] There is an overlap between the PSFCH of at least one resource in at least one second resource set on at least one first carrier as indicated by the higher layer and the PSFCH of at least one resource in at least one second resource set on at least one other carrier.

[0574] There exists a PSFCH overlap between at least one resource in at least one second resource set on at least one first carrier and at least one resource in at least one second resource set on at least one other carrier, and the priority of at least one resource in the second resource set on one first carrier is higher or lower than the priority of at least one resource in the second resource set on the other at least one carrier.

[0575] There exists a PSFCH corresponding to at least one resource in at least one second resource set on at least one first carrier that overlaps with at least one resource in at least one second resource set on at least one other carrier, and the first terminal detects that the RSRP of the PSCCH is greater than the eighth threshold within the ninth time window, and / or the RSRP of the PSSCH scheduled by the PSCCH is greater than the eighth threshold, and the reserved resource indicated by the resource reservation information in the SCI transmitted in the PSCCH overlaps with at least one resource in the second resource set on the first carrier.

[0576] Optionally, the determining module 401 is also specifically configured to perform at least one of the following operations:

[0577] There exists a PSFCH corresponding to at least one resource in at least one second resource set on at least one first carrier, as indicated by a higher layer, that overlaps with at least one resource in at least one second resource set on at least one other carrier.

[0578] There exists a PSFCH corresponding to at least one resource in at least one second resource set on at least one first carrier that overlaps with at least one resource in at least one second resource set on at least one other carrier, and the priority of at least one resource in the second resource set on one first carrier is higher or lower than the priority of at least one resource in the second resource set on the other at least one carrier.

[0579] There exists a PSFCH corresponding to at least one resource in at least one second resource set on at least one first carrier that overlaps with at least one resource in at least one second resource set on at least one other carrier, and the first terminal detects that the RSRP of the PSCCH is greater than the ninth threshold within the tenth time window, and / or the RSRP of the PSSCH scheduled by the PSCCH is greater than the ninth threshold, and the reserved resource indicated by the resource reservation information in the SCI transmitted in the PSCCH overlaps with at least one resource in the second resource set on the first carrier.

[0580] The resource selection device in this application embodiment can 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 can be a terminal, or other devices besides a terminal. For example, the terminal can include, but is not limited to, the type of terminal 11 listed above; other devices can be servers, network attached storage (NAS), etc., and this application embodiment does not specifically limit the type.

[0581] The resource selection device provided in this application embodiment can achieve... Figure 2 and Figure 3 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0582] Figure 5 This is a schematic diagram of the structure of the communication device provided in the embodiments of this application, such as... Figure 5 As shown, the communication device 500 includes a processor 501 and a memory 502. The memory 502 stores programs or instructions that can run on the processor 501. For example, when the communication device 500 is a first terminal, the program or instructions executed by the processor 501 implement the various steps of the above-described resource selection method embodiment and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0583] This application embodiment also provides a first terminal, including a processor and a communication interface. The processor is used to perform a target operation on resources on N1 first carriers based on first information, and to determine target resources on one or more first carriers.

[0584] The target operation includes at least one of the following: resource selection, resource reselection, resource reassessment, and resource preemption; the first information is information on target candidate resources on N1 first carriers; the target candidate resources overlap with the first reference resources, and / or the physical sidelink feedback channel (PSFCH) corresponding to the target candidate resources overlaps with the second reference resources;

[0585] The first reference resource includes at least one of the following:

[0586] The first terminal's first resources on N2 second carriers;

[0587] The PSFCH resources corresponding to the reserved resources of the first terminal on N3 third carriers;

[0588] The second terminal has a first transmission resource on N4 fourth carriers, and the second terminal is the side link SL data receiving end corresponding to the target resource;

[0589] The second terminal detects the second transmission resources of the third terminal on N5 fifth carriers;

[0590] The second reference resource includes at least one of the following:

[0591] The second resources of the first terminal on N6 sixth carriers;

[0592] The first terminal has reserved resources on N7 seventh carriers.

[0593] This first terminal embodiment corresponds to the resource selection method embodiment described above. All implementation processes and methods of the above method embodiments can be applied to this first terminal embodiment and can achieve the same technical effect.

[0594] Figure 6 This is a schematic diagram of the terminal structure provided in the embodiments of this application, such as... Figure 6 As shown, the terminal 600 includes, but is not limited to, at least some of the following components: radio frequency unit 601, network module 602, audio output unit 603, input unit 604, sensor 605, display unit 606, user input unit 607, interface unit 608, memory 609, and processor 610.

[0595] Those skilled in the art will understand that the terminal 600 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 610 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 6 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0596] It should be understood that, in this embodiment, the input unit 604 may include a graphics processing unit (GPU) 6041 and a microphone 6042. The GPU 6041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 606 may include a display panel 6061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 607 includes at least one of a touch panel 6071 and other input devices 6072. The touch panel 6071 is also called a touch screen. The touch panel 6071 may include a touch detection device and a touch controller. Other input devices 6072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0597] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 601 can transmit it to the processor 610 for processing; in addition, the radio frequency unit 601 can send uplink data to the network-side device. Typically, the radio frequency unit 601 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0598] The memory 609 can be used to store software programs or instructions, as well as various data. The memory 609 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 609 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 609 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0599] Processor 610 may include one or more processing units; optionally, processor 610 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 610.

[0600] This application also provides a readable storage medium, which can be volatile or non-volatile. The readable storage medium stores a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described resource selection method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0601] The processor is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0602] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above resource selection method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0603] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0604] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described resource selection method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0605] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0606] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0607] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A resource selection method, characterized in that, include: Based on the first information, the first terminal performs a target operation on the resources on N1 first carriers to determine one or more target resources on the first carriers. The target operation includes at least one of the following: resource selection, resource reselection, resource reassessment, and resource preemption; the first information is information on target candidate resources on N1 first carriers; the target candidate resources overlap with the first reference resources, and / or the physical sidelink feedback channel (PSFCH) corresponding to the target candidate resources overlaps with the second reference resources; The first reference resource includes at least one of the following: The first terminal's first resources on N2 second carriers; The PSFCH resources corresponding to the reserved resources of the first terminal on N3 third carriers; The second terminal has a first transmission resource on N4 fourth carriers, and the second terminal is the side link SL data receiving end corresponding to the target resource; The second terminal detects the second transmission resources of the third terminal on N5 fifth carriers; The second reference resource includes at least one of the following: The second resources of the first terminal on N6 sixth carriers; The first terminal has reserved resources on N7 seventh carriers; The method further includes: If the first event is met, the first terminal performs resource reselection from the target carrier to other carriers; The first event includes at least one of the following: The cumulative number of negative acknowledgments (NACKs) on the target carrier exceeds the first threshold. The number of consecutive NACKs on the target carrier exceeds the second threshold; The Channel State Information (CSI) on the target carrier is below the third threshold.

2. The resource selection method according to claim 1, characterized in that, The first terminal, based on first information, performs a target operation on resources on N1 first carriers to determine target resources on one or more first carriers, including: For any first carrier, the first terminal excludes the target candidate resources on the first carrier within a first time window and determines the first candidate resource set on the first carrier. The first terminal selects the target resource from the first candidate resource set.

3. The resource selection method according to claim 2, characterized in that, The first terminal selects the target resource from the first candidate resource set, including: The first terminal selects, from the first candidate resource set, resources that overlap in the time domain on multiple first carriers as the target resource.

4. The resource selection method according to claim 1, characterized in that, The first terminal, based on first information, performs a target operation on resources on N1 first carriers to determine target resources on one or more first carriers, including: The first terminal reports a second candidate resource set to the higher layer; the second candidate resource set includes the candidate resource sets on all first carriers. Based on the first information, the first terminal selects the target resource from the second candidate resource set.

5. The resource selection method according to claim 1, characterized in that, The first terminal, based on first information, performs a target operation on resources on N1 first carriers to determine target resources on one or more first carriers, including: The first terminal reports one or more sets of candidate resources on the first carrier to the higher layer. The first terminal merges the candidate resource sets on one or more first carriers to obtain a second candidate resource set; Based on the first information, the first terminal selects the target resource from the second candidate resource set.

6. The resource selection method according to claim 5, characterized in that, The first terminal merges the candidate resource sets on one or more first carriers to obtain the second candidate resource set, including: The first terminal merges the resources within the first time window from the candidate resource sets on one or more first carriers to obtain the second candidate resource set.

7. The resource selection method according to claim 1, characterized in that, The first terminal, based on first information, performs a target operation on resources on N1 first carriers to determine target resources on one or more first carriers, including: The first terminal reports a second candidate resource set to the higher layer; the second candidate resource set includes the candidate resource sets on all first carriers, and the candidate resource sets on first carriers that have not triggered resource selection or resource reselection are empty; Based on the first information, the first terminal selects the target resource from the second candidate resource set.

8. The resource selection method according to claim 1, characterized in that, The first terminal, based on first information, performs a target operation on resources on N1 first carriers to determine target resources on one or more first carriers, including: The first terminal reports one or more candidate resource sets on the first carrier to the higher layer, and the first terminal does not report candidate resource sets on the first carrier that have not triggered resource selection or resource reselection to the higher layer; or, the first terminal reports one or more candidate resource sets on the first carrier to the higher layer, and the candidate resource sets on the first carrier that have not triggered resource selection or resource reselection reported by the first terminal to the higher layer are empty. The first terminal determines a second candidate resource set based on the reported candidate resource sets on one or more first carriers; Based on the first information, the first terminal selects the target resource from the second candidate resource set.

9. The resource selection method according to claim 1, characterized in that, The first terminal, based on first information, performs a target operation on resources on N1 first carriers to determine target resources on one or more first carriers, including: The first terminal reports to the higher layer a set of candidate resources on one or more first carriers, as well as the first information; The first terminal determines a second candidate resource set based on the reported candidate resource sets on one or more first carriers; Based on the first information, the first terminal selects the target resource from the second candidate resource set.

10. The resource selection method according to any one of claims 4 to 9, characterized in that, The first terminal selects the target resource from the second candidate resource set based on the first information, including at least one of the following: The first terminal selects a resource from the second candidate resource set that does not overlap with the first reference resource as the target resource; The first terminal selects the target resource from the resources in the second candidate resource set, excluding the target candidate resource. The first terminal selects the target candidate resource as the target resource from the second candidate resource set according to the lowest priority. The first terminal selects, from the second candidate resource set, resources that do not overlap with the first reference resource and which overlap in the time domain on multiple first carriers as the target resource.

11. The resource selection method according to claim 1, characterized in that, The first terminal, based on first information, performs a target operation on resources on N1 first carriers to determine target resources on one or more first carriers, including: Based on the initial candidate resource set on each of the first carriers, the first terminal determines a third candidate resource set; the third candidate resource set includes the intersection or union of the initial candidate resource sets on each of the first carriers. The first terminal excludes resources in the third candidate resource set that overlap with the target candidate resource, and determines the fourth candidate resource set; The first terminal selects the target resource from the fourth candidate resource set.

12. The resource selection method according to claim 11, characterized in that, The first terminal excludes resources in the third candidate resource set that overlap with the target candidate resource, and determines a fourth candidate resource set, including at least one of the following: If there are resources in the third candidate resource set that overlap with the target candidate resource, and the priority of the SL data to be sent by the first terminal is higher or lower than the priority of the first reference resource, the first terminal will exclude the resources in the third candidate resource set that overlap with the target candidate resource and determine the fourth candidate resource set. If there are resources in the third candidate resource set that overlap with the target candidate resource, and the first terminal detects that the Reference Signal Received Power (RSRP) of the Physical Sidelink Control Channel (PSCCH) is greater than the first threshold within the second time window, and / or the RSRP of the Physical Sidelink Shared Channel (PSSCH) scheduled by the PSCCH is greater than the first threshold, and the reserved resources indicated by the resource reservation information in the Sidelink Control Information (SCI) transmitted in the PSCCH overlap with the target candidate resource, the first terminal will exclude the resources in the third candidate resource set that overlap with the target candidate resource and determine the fourth candidate resource set.

13. The resource selection method according to claim 11, characterized in that, The first terminal selects the target resource from the fourth candidate resource set, including: The first terminal selects, from the fourth candidate resource set, resources that overlap in the time domain on multiple first carriers as the target resource.

14. The resource selection method according to claim 1, characterized in that, The first terminal, based on first information, performs a target operation on resources on N1 first carriers to determine target resources on one or more first carriers, including: Based on the initial candidate resource set on each of the first carriers, the first terminal determines a third candidate resource set; the third candidate resource set includes the intersection or union of the initial candidate resource sets on each of the first carriers. For any first carrier, the first terminal excludes the target candidate resources on the first carrier within a first time window and determines the first candidate resource set on the first carrier. The first terminal selects the target resource from the resources in the third candidate resource set that overlap with the first intersection resource; the first intersection resource is the resource in the first candidate resource set on each of the first carriers that has an intersection.

15. The resource selection method according to claim 2 or 14, characterized in that, For any first carrier, the first terminal excludes the target candidate resources on the first carrier within a first time window to determine the first candidate resource set on the first carrier, including at least one of the following: For any first carrier, if the target candidate resource exists on the first carrier within the first time window, and the priority of the SL data to be transmitted by the first terminal is higher or lower than the priority of the first reference resource, the first terminal excludes the target candidate resource on the first carrier within the first time window and determines the first candidate resource set on the first carrier. For any first carrier, if the target candidate resource exists on the first carrier within the first time window, and the first terminal detects that the RSRP of the PSCCH is greater than the second threshold and / or the RSRP of the PSSCH scheduled by the PSCCH is greater than the second threshold within the third time window, and the reserved resource indicated by the resource reservation information in the SCI transmitted in the PSCCH overlaps with the target candidate resource, the first terminal excludes the target candidate resource on the first carrier within the first time window and determines the first candidate resource set on the first carrier.

16. The resource selection method according to claim 14, characterized in that, The first terminal selects the target resource from the resources that overlap with the first intersection resources in the third candidate resource set, including: The first terminal selects, from the resources in the third candidate resource set that overlap with the first intersection resources, the resources that overlap in the time domain on multiple first carriers as the target resources.

17. The resource selection method according to claim 11 or 14, characterized in that, The target resource includes at least one carrier with the same initial transmission resource and retransmission resource for the same SL data to be transmitted.

18. The resource selection method according to claim 11 or 14, characterized in that, Based on the initial candidate resource set on each of the first carriers, the first terminal determines the third candidate resource set, including: The first terminal determines the third candidate resource set based on the initial candidate resource set on each of the first carriers that meets the target conditions; The target condition includes at least one of the following: The subcarrier spacing (SCS) of each carrier is the same; The HARQ (Hybrid Automatic Repeat Request) configuration is the same for the resource pools of each carrier; The PSFCH configuration is the same for the resource pools of each carrier.

19. The resource selection method according to claim 1, characterized in that, The first terminal, based on first information, performs a target operation on resources on N1 first carriers to determine target resources on one or more first carriers, including: Based on the initial candidate resource set on each of the first carriers, the first terminal determines a fifth candidate resource set; the fifth candidate resource set includes candidate resources that overlap in the time domain on each of the first carriers within a first time window; The first terminal excludes resources in the fifth candidate resource set that overlap with the target candidate resource, and determines the sixth candidate resource set; The first terminal selects the target resource from the sixth candidate resource set.

20. The resource selection method according to claim 19, characterized in that, The first terminal excludes resources in the fifth candidate resource set that overlap with the target candidate resource, and determines a sixth candidate resource set, which includes at least one of the following: If there are resources in the fifth candidate resource set that overlap with the target candidate resource, and the priority of the SL data to be sent by the first terminal is higher or lower than the priority of the first reference resource, the first terminal will exclude the resources in the fifth candidate resource set that overlap with the target candidate resource and determine the sixth candidate resource set. If there are resources in the fifth candidate resource set that overlap with the target candidate resource, and the first terminal detects that the RSRP of the PSCCH is greater than the third threshold and / or the RSRP of the PSSCH scheduled by the PSCCH is greater than the third threshold within the fourth time window, and the reserved resources indicated by the resource reservation information in the SCI transmitted in the PSCCH overlap with the target candidate resource, the first terminal will exclude the resources in the fifth candidate resource set that overlap with the target candidate resource and determine the sixth candidate resource set.

21. The resource selection method according to claim 1, characterized in that, The first resource includes at least one of the following: PSFCH resources to be received; Physical sidelink shared channel (PSSCH) resources to be received; Sidelink synchronization signal / physical broadcast channel block (S-SSB) resources to be received; PSFCH candidate resources; Candidate resources for S-SSB; Resources in the third time period; The third time is the time the first terminal waits for a response message after sending a request message, or the running time of a timer. The running time of the timer is used to continuously monitor the response message after the first terminal sends a request message.

22. The resource selection method according to claim 1, characterized in that, The second resource includes at least one of the following: PSFCH resources to be sent; PSSCH resources to be sent; S-SSB resources to be sent; PSFCH candidate resources; Candidate resources for S-SSB.

23. The resource selection method according to claim 1, characterized in that, The first transmission resource and / or the second transmission resource includes at least one of the following: Periodic and / or non-periodic reserved resources are used for sending SL data; Resources of the PSFCH to be sent; Resources for PSSCH to be sent; Resources of S-SSBs to be sent.

24. The resource selection method according to claim 1, characterized in that, The first terminal performs a target operation on resources on N1 first carriers based on the first information, including: The first terminal determines the target order for executing the target operations on each of the first carriers based on the target parameters; The first terminal executes the target operation for each of the first carriers based on the target sequence; The target parameter includes at least one of the following: Priority of SL data; The type of SL data.

25. The resource selection method according to claim 1, characterized in that, The first information includes at least one of the following: The resources of the first terminal on at least one first carrier overlap with the resources of the first terminal on N2 second carriers; Received instruction information; The indication information is used to indicate that the first receiving resources of the second terminal on the first carrier overlap with the first transmitting resources of the second terminal on N4 fourth carriers, and / or, the indication information is used to indicate that the first receiving resources of the second terminal on the first carrier overlap with the second transmitting resources of the third terminal detected by the second terminal on N5 fifth carriers; The SL data sending end corresponding to the first receiving resource is the first terminal.

26. The resource selection method according to claim 25, characterized in that, The instruction information includes at least one of the following: Information used to indicate the first carrier corresponding to the first receiving resource; Information used to indicate the first sending resource; Information used to indicate resources that overlap between the first receiving resource and the first sending resource; Information used to indicate the second sending resource; Information used to indicate overlapping resources between the first receiving resource and the second sending resource.

27. The resource selection method according to claim 1, characterized in that, The method further includes: If the second event is met, the first terminal triggers resource reselection for one or more first carriers; wherein the second event includes at least one of the following: There is an overlap between at least one target resource on at least one first carrier and the PSFCH corresponding to reserved resources on at least one other carrier; There exists a PSFCH corresponding to at least one target resource on at least one first carrier that overlaps with a reserved resource on at least one other carrier; There exists at least one target resource on at least one first carrier that overlaps with resources to be received on at least one other carrier; There exists at least one third resource in the first resource set that overlaps with at least one fourth resource in the first resource set; There exists a PSFCH corresponding to at least one resource in at least one second resource set on at least one first carrier that overlaps with at least one resource in at least one second resource set on at least one other carrier; There exists a PSFCH corresponding to at least one resource in at least one second resource set on at least one first carrier that overlaps with at least one resource in at least one second resource set on at least one other carrier; There exists at least one fifth resource in at least one first resource set that does not belong to the candidate resource set, or there exists at least one fifth resource in at least one first resource set that does not belong to the candidate resource set of the carrier in which the fifth resource is located; There exists at least one sixth resource in at least one second resource set on at least one first carrier that does not belong to the candidate resource set, or there exists at least one sixth resource in at least one second resource set on at least one first carrier that does not belong to the candidate resource set of the carrier in which the sixth resource is located.

28. The resource selection method according to claim 27, characterized in that, The existence of at least one target resource on at least one first carrier overlapping with the PSFCH corresponding to reserved resources on at least one other carrier includes at least one of the following: There exists a PSFCH corresponding to at least one target resource on at least one first carrier that overlaps with a reserved resource on at least one other carrier, and the priority of the target resource is higher or lower than the priority of the reserved resource on the at least one other carrier; There exists a PSFCH corresponding to at least one target resource on at least one first carrier that overlaps with a reserved resource on at least one other carrier, and the first terminal detects that the RSRP of the PSCCH is greater than the fourth threshold within the fifth time window, and / or the RSRP of the PSSCH scheduled by the PSCCH is greater than the fourth threshold, and the reserved resource indicated by the resource reservation information in the SCI transmitted in the PSCCH overlaps with the target resource.

29. The resource selection method according to claim 27, characterized in that, The existence of a PSFCH corresponding to a target resource on at least one first carrier overlapping with a reserved resource on at least one other carrier includes at least one of the following: There exists a PSFCH corresponding to at least one target resource on at least one first carrier that overlaps with a reserved resource on at least one other carrier, and the priority of the target resource is higher or lower than the priority of the reserved resource on the at least one other carrier; There exists a PSFCH corresponding to at least one target resource on at least one first carrier that overlaps with reserved resources on at least one other carrier, and the first terminal detects that the RSRP of the PSCCH is greater than the fifth threshold within the sixth time window, and / or the RSRP of the PSSCH scheduled by the PSCCH is greater than the fifth threshold, and the reserved resource indicated by the resource reservation information in the SCI transmitted in the PSCCH overlaps with the target resource.

30. The resource selection method according to claim 27, characterized in that, The existence of at least one target resource on at least one first carrier overlapping with resources to be received on at least one other carrier includes at least one of the following: There exists at least one target resource on at least one first carrier that overlaps with resources to be received on at least one other carrier, and the priority of the target resource is higher or lower than the priority of the resources to be received on the at least one other carrier; There exists at least one target resource on at least one first carrier that overlaps with resources to be received on at least one other carrier, and the first terminal detects that the RSRP of the PSCCH is greater than the sixth threshold within the seventh time window, and / or the RSRP of the PSSCH scheduled by the PSCCH is greater than the sixth threshold, and the reserved resource indicated by the resource reservation information in the SCI transmitted in the PSCCH overlaps with the target resource.

31. The resource selection method according to claim 27, characterized in that, The existence of at least one third resource in at least one first resource set overlapping with at least one fourth resource in the first resource set in terms of PSFCH includes at least one of the following: There exists a PSFCH overlap between at least one third resource in at least one first resource set as indicated by a higher level and at least one fourth resource in the first resource set; There exists at least one third resource in at least one first resource set that overlaps with at least one fourth resource in the first resource set, and the priority of the third resource is higher or lower than the priority of the fourth resource. There exists at least one third resource in at least one first resource set that overlaps with at least one fourth resource in the first resource set in the PSFCH, and the first terminal detects that the RSRP of the PSCCH is greater than the seventh threshold within the eighth time window, and / or the RSRP of the PSSCH scheduled by the PSCCH is greater than the seventh threshold, and the reserved resource indicated by the resource reservation information in the SCI transmitted in the PSCCH overlaps with the third resource.

32. The resource selection method according to claim 27, characterized in that, The existence of PSFCH overlap between at least one resource in at least one second resource set on at least one first carrier and at least one resource in at least one second resource set on at least one other carrier includes at least one of the following: There is an overlap between the PSFCH of at least one resource in at least one second resource set on at least one first carrier as indicated by the higher layer and the PSFCH of at least one resource in at least one second resource set on at least one other carrier. There exists a PSFCH overlap between at least one resource in at least one second resource set on at least one first carrier and at least one resource in at least one second resource set on at least one other carrier, and the priority of at least one resource in the second resource set on one first carrier is higher or lower than the priority of at least one resource in the second resource set on the other at least one carrier. There exists a PSFCH corresponding to at least one resource in at least one second resource set on at least one first carrier that overlaps with at least one resource in at least one second resource set on at least one other carrier, and the first terminal detects that the RSRP of the PSCCH is greater than the eighth threshold within the ninth time window, and / or the RSRP of the PSSCH scheduled by the PSCCH is greater than the eighth threshold, and the reserved resource indicated by the resource reservation information in the SCI transmitted in the PSCCH overlaps with at least one resource in the second resource set on the first carrier.

33. The resource selection method according to claim 27, characterized in that, The existence of a PSFCH corresponding to at least one resource in at least one second resource set on at least one first carrier overlapping with at least one resource in at least one second resource set on at least one other carrier includes at least one of the following: There exists a PSFCH corresponding to at least one resource in at least one second resource set on at least one first carrier as indicated by a higher layer that overlaps with at least one resource in at least one second resource set on at least one other carrier. There exists a PSFCH corresponding to at least one resource in at least one second resource set on at least one first carrier that overlaps with at least one resource in at least one second resource set on at least one other carrier, and the priority of at least one resource in the second resource set on one first carrier is higher or lower than the priority of at least one resource in the second resource set on the other at least one carrier. There exists a PSFCH corresponding to at least one resource in at least one second resource set on at least one first carrier that overlaps with at least one resource in at least one second resource set on at least one other carrier, and the first terminal detects that the RSRP of the PSCCH is greater than the ninth threshold within the tenth time window, and / or the RSRP of the PSSCH scheduled by the PSCCH is greater than the ninth threshold, and the reserved resource indicated by the resource reservation information in the SCI transmitted in the PSCCH overlaps with at least one resource in the second resource set on the first carrier.

34. A resource selection device, characterized in that, The device includes: The determination module is used to perform target operations on resources on N1 first carriers based on first information, and determine target resources on one or more first carriers; The target operation includes at least one of the following: resource selection, resource reselection, resource reassessment, and resource preemption; the first information is information on target candidate resources on N1 first carriers; the target candidate resources overlap with the first reference resources, and / or the physical sidelink feedback channel (PSFCH) corresponding to the target candidate resources overlaps with the second reference resources; The first reference resource includes at least one of the following: The first terminal has its first resources on N2 second carriers; The PSFCH resources corresponding to the reserved resources of the first terminal on N3 third carriers; The second terminal has a first transmission resource on N4 fourth carriers, and the second terminal is the side link SL data receiving end corresponding to the target resource; The second terminal detects the second transmission resources of the third terminal on N5 fifth carriers; The second reference resource includes at least one of the following: The second resources of the first terminal on N6 sixth carriers; The first terminal has reserved resources on N7 seventh carriers; The determining module is further configured to perform resource reselection from the target carrier to other carriers when the first event is satisfied; The first event includes at least one of the following: The cumulative number of negative acknowledgments (NACKs) on the target carrier exceeds the first threshold. The number of consecutive NACKs on the target carrier exceeds the second threshold; The Channel State Information (CSI) on the target carrier is below the third threshold.

35. A terminal, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the resource selection method as described in any one of claims 1 to 33.

36. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the resource selection method as described in any one of claims 1 to 33.

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