WO2024067573A1

WO2024067573A1 - Sl resource allocation method and apparatus, and terminals

Info

Publication number: WO2024067573A1
Application number: PCT/CN2023/121504
Authority: WO
Inventors: 李�灿; 李佳林; 姜蕾
Original assignee: 维沃移动通信有限公司
Priority date: 2022-09-30
Filing date: 2023-09-26
Publication date: 2024-04-04
Also published as: CN117880963A

Abstract

The present application belongs to the technical field of communications. Disclosed are an SL resource allocation method and apparatus, and terminals. The SL resource allocation method in the embodiments of the present application comprises: on the basis of resources in a resource selection window, a terminal determines M target candidate multi-slot resources, the M target candidate multi-slot resources being used for SL transmission, each target candidate multi-slot resource comprising the resources of N continuous slots, N being an integer greater than 1, and M being a positive integer.

Description

SL resource allocation method, device and terminal

cross reference

This application claims the priority of the Chinese patent application filed with the China Patent Office on September 30, 2022, with application number 202211215900.9 and name “SL resource allocation method, device and terminal”. The entire contents of this application are incorporated by reference into this application.

Technical Field

The present application belongs to the field of communication technology, and specifically relates to a SL resource allocation method, device and terminal.

Background technique

In sidelink (SL) transmission in unlicensed spectrum, the terminal supports continuous multi-slot transmission in order to maintain channel occupancy after acquiring the channel.

In the prior art, mode 2 resource allocation of SL terminals is based on single-slot units, which has poor matching with multi-slot transmission, leading to low time-frequency resource efficiency of SL transmission.

Summary of the invention

The embodiments of the present application provide a SL resource allocation method, device and terminal, which can solve the problem of low time-frequency resource efficiency of SL transmission.

In a first aspect, a SL resource allocation method is provided, which includes: a terminal determines M target candidate multi-slot resources based on resources within a resource selection window; wherein the M target candidate multi-slot resources are used for SL transmission, and each target candidate multi-slot resource includes resources of N consecutive time slots, N is an integer greater than 1, and M is a positive integer.

In the second aspect, a SL resource allocation device is provided, which includes: a determination module, used to determine M target candidate multi-slot resources based on resources within a resource selection window; wherein the M target candidate multi-slot resources are used for SL transmission, and each target candidate multi-slot resource includes resources of N consecutive time slots, N is an integer greater than 1, and M is a positive integer.

According to a third aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be executed on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

In a fourth aspect, a terminal is provided, including a processor and a communication interface; wherein the processor is configured to The source selects resources within the window and determines M target candidate multi-slot resources;

The M target candidate multi-slot resources are used for SL transmission, and each target candidate multi-slot resource includes resources of N consecutive time slots, where N is an integer greater than 1 and M is a positive integer.

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

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

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

In an embodiment of the present application, the terminal can determine M target candidate multi-slot resources for SL transmission based on the resources within the resource selection window, and each target candidate multi-slot resource includes N consecutive slot resources; the terminal can select N consecutive slot resources as the target candidate multi-slot resources, that is, the terminal supports multi-slot-based resource allocation, so that the terminal can use the target candidate multi-slot resources to perform multi-slot SL transmission in the unlicensed spectrum, and use multiple consecutive slot resources for transmission at the same time, effectively increasing the time-frequency resource efficiency of SL transmission.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a wireless communication system applicable to an embodiment of the present application;

FIG2 is a schematic diagram of the interaction between UL, DL and SL in the prior art;

FIG3 is a schematic diagram of PSCCH and PSSCH in a subchannel in the prior art;

FIG4 is a flow chart of a method for allocating SL resources according to an embodiment of the present application;

FIG5 is a schematic diagram of the structure of an SL resource allocation device provided in an embodiment of the present application;

FIG6 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application;

FIG. 7 is a schematic diagram of the structure of a terminal provided in an embodiment of the present application.

Detailed ways

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

The terms "first", "second", etc. in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and "first", "second", etc. are not used to describe a specific order or sequence. The object distinguished by "second" is usually a category, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and/or" in the specification and claims means at least one of the connected objects, and the character "/" generally means that the related objects are in an "or" relationship.

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

FIG1 is a schematic diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system shown in FIG1 includes a terminal 11 and a network side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), an augmented reality (augmented reality, AR) / virtual reality (virtual reality, VR) device , robots, wearable devices (Wearable Device), vehicle user equipment (VUE), pedestrian user equipment (PUE), smart home (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), game consoles, personal computers (personal computers, PCs), teller machines or self-service machines and other terminal side devices, wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. It should be noted that the specific type of terminal 11 is not limited in the embodiment of the present application.

The network side device 12 may include an access network device or a core network device, wherein the access network device may also be referred to as a radio access network device, a radio access network (RAN), a radio access network function or a radio access network unit. The access network device may include a base station, a WLAN access point or a WiFi node, etc. The base station may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home node B, a home evolved node B, a transmitting receiving point (TRP) or some other suitable term in the field. As long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited. The core network device may include but is not limited to at least one of the following: a core network node, a core network function, a mobility management entity (MME), an access mobility management function 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 (L-NEF), Binding Support Function (BSF), Application Function (AF), Location Management Function (LMF), Enhanced Serving Mobile Location Centre (E-SMLC), Network Data Analytics Function (NRF), function, NWDAF), etc. It should be noted that in the embodiments of the present application, only the core network device in the NR system is introduced as an example, and the specific type of the core network device is not limited.

The following, in combination with the accompanying drawings, describes in detail the SL resource allocation method, device and terminal provided in the embodiments of the present application through some embodiments and their application scenarios.

In order to facilitate a clearer understanding of the embodiments of the present application, some relevant technical knowledge is first introduced as follows.

1. Introduction to SL

SL can also be translated as sublink, side link, edge link, etc. SL transmission means that the terminals (User Equipment, UE) transmit data directly on the physical layer. At the same time, the terminal can also transmit with the network side equipment through the uplink (Uplink, UL) and downlink (Downlink, DL).

FIG. 2 is a schematic diagram of the interaction between UL, DL and SL in the prior art, as shown in FIG. 2 .

NR SL includes the following channels:

1) Physical sidelink control channel (PSCCH);

2) Physical sidelink shared channel (PSSCH);

3) Physical sidelink broadcast channel (PSBCH);

4) Physical sidelink discovery feedback channel (PSFCH).

Among them, PSSCH allocates resources in units of sub-channels, and adopts a continuous resource allocation method in the frequency domain. The time domain resources of PSCCH are the number of symbols configured by the high-level layer, and the frequency domain size is a parameter configured by the high-level layer. The frequency domain resource limit of PSCCH is less than or equal to the size of a sub-channel, and PSCCH is located within the range of the lowest sub-channel of PSSCH.

Figure 3 is a schematic diagram of PSCCH and PSSCH in sub-channels in the prior art. As shown in Figure 3, PSCCH is located within the range of the lowest sub-channel of PSSCH. In the figure, the slash area represents automatic gain control (Automatic Gain Control, AGC), the dotted area represents PSCCH, and the horizontal and vertical line areas represent guard periods (Guard Period, GP).

2. SL resource instructions

SL UE includes two resource allocation modes, mode 1 and mode 2. Mode 1 is the base station scheduling resources. In mode 2, the UE decides what resources to use for transmission.

For mode 2, the specific working method is as follows:

1) After the resource selection is triggered, the UE first determines the resource selection window. The lower boundary of the resource selection window is T1 time after the resource selection is triggered, and the upper boundary of the resource selection window is T2 time after the trigger, where T2 is the value selected by the UE within the packet delay budget (PDB) transmitted in its transport block (TB), and T2 is no earlier than T1.

2) Before selecting resources, the UE needs to determine the candidate resource set (candidate resource set) for resource selection, and compare the reference signal received power (RSRP) measured on the resources in the resource selection window with the corresponding RSRP threshold (threshold). If the RSRP is lower than the RSRP threshold, then the resource can be included in the candidate resource set.

3) After the resource set is determined, the UE randomly selects a transmission resource from the candidate resource set. In addition, the UE can reserve transmission resources for the next transmission during the current transmission.

NR SL supports a chained resource reservation method, that is, a sidelink control information (SCI) can indicate that including the current transmission resources, up to two additional resources can be reserved, and in the next resource cycle, up to three reserved resources can be indicated.

3. Technical introduction of SL in unlicensed spectrum

For SL (sidelink-unlicense, SL-U) communication in unlicensed spectrum, it is necessary to acquire the channel through listen before talk (LBT) before sending SL data. The following is a brief introduction to LBT technology:

In future communication systems, shared spectrum, such as unlicensed bands, can be used as a supplement to licensed bands to help operators expand services. In order to be consistent with NR deployment and maximize NR-based unlicensed access, unlicensed bands can operate in the 5GHz, 37GHz and 60GHz bands. Since unlicensed bands are shared by multiple technologies (RATs), such as WiFi, radar and Long Term Evolution-License Assisted Access (LTE-LAA), in some countries or regions, unlicensed bands must comply with regulations when used to ensure that all devices can use the resource fairly, such as LBT, maximum channel occupancy time (MCOT) and other rules.

When a transmission node needs to send information, it needs to do LBT first. This process is to perform energy detection (ED) on the surrounding nodes. When the detected power is lower than a threshold, the channel is considered to be idle and the transmission node can send. Otherwise, the channel is considered to be busy and the transmission node cannot send. The transmission node can be a base station, UE, WiFi AP, etc. After the transmission node starts transmitting, the channel occupancy time (COT) cannot exceed MCOT.

The SL resource allocation method provided in the embodiment of the present application can be applied to a terminal that needs to perform SL resource selection.

FIG. 4 is a flow chart of a method for allocating SL resources according to an embodiment of the present application. As shown in FIG. 4 , the method includes step 401; wherein:

Step 401: The terminal determines M target candidate multi-slots based on the resources in the resource selection window. Resources; wherein the M target candidate multi-slot resources are used for SL transmission, each target candidate multi-slot resource includes resources of N consecutive time slots, N is an integer greater than 1, and M is a positive integer.

Specifically, in the related art, the terminal performs SL transmission in the unlicensed spectrum, and supports continuous multi-slot transmission in order to maintain channel occupancy after obtaining the channel; however, the mode 2 resource allocation of SL in the prior art allocates resources based on single slot, which has poor matching with multi-slot transmission, and therefore it is necessary to design the mode 2 resource allocation of multi-slot.

In an embodiment of the present application, the terminal can determine M target candidate multi-slot resources for SL transmission based on the resources within the resource selection window, and each target candidate multi-slot resource includes N consecutive slot resources, that is, the terminal can select N consecutive slot resources as target candidate multi-slot resources, and subsequently use the target candidate multi-slot resources for SL transmission, or use the target candidate multi-slot resources as resources to be transmitted and/or reserved resources.

Optionally, the slot resource may include a single-slot resource.

It should be noted that the single-slot resource is defined as: every K consecutive subchannels on each slot within the resource selection window, and K subchannels are the minimum units of frequency domain detection for PSSCH resource selection;

It should also be noted that the RSRP measurement of single-slot resources includes: receiving the SCI in the detection window, and measuring the RSRP of the demodulation reference signal (DMRS) associated with the PSSCH or PSCCH transmission indicated by the SCI or the PSCCH carrying the SCI.

In the SL resource allocation method provided in the embodiment of the present application, the terminal can determine M target candidate multi-slot resources for SL transmission based on the resources within the resource selection window, and each target candidate multi-slot resource includes N consecutive slot resources; the terminal can select N consecutive slot resources as the target candidate multi-slot resources, that is, the terminal supports multi-slot-based resource allocation, so that the terminal can use the target candidate multi-slot resources to perform multi-slot SL transmission in the unlicensed spectrum, and use multiple consecutive slot resources for transmission at the same time, effectively increasing the time-frequency resource efficiency of SL transmission.

Optionally, the resources within the resource selection window may include at least one target resource block group (Resource Block set, RB set); the target RB set is the minimum frequency domain unit of listen before talk (LBT).

Specifically, the terminal can select or be configured to perform resource selection within at least one RB set, that is, it can select or be configured with at least one RB set as the frequency domain range of the resource selection window, where RB set is the minimum frequency domain unit of LBT.

Optionally, the implementation manner in which the terminal determines M target candidate multi-slot resources based on the resources in the resource selection window may include:

The terminal determines X first candidate sets based on the resources in the resource selection window; each first candidate set includes at least one candidate single-slot resource, and X is a positive integer;

The terminal determines the M target candidate multi-slot resources from resources within the resource selection window based on the candidate single-slot resources in the first candidate set;

Each target candidate multi-slot resource includes at least one candidate in the first candidate set. N consecutive slots including the single-slot resource; each target candidate multi-slot resource satisfies the first condition.

Specifically, the terminal may first determine X first candidate sets based on the resources in the resource selection window, and the terminal may obtain at least one candidate single-slot resource to form the first candidate set;

The terminal then determines M target candidate multi-slot resources from the resources in the resource selection window based on the candidate single-slot resources in the first candidate set. Specifically, the terminal can obtain N consecutive slot resources including at least one candidate single-slot resource in the first candidate set, and if the obtained N consecutive slot resources meet the first condition, the obtained N consecutive slot resources can be used as target candidate multi-slot resources.

Optionally, the implementation manner in which the terminal determines the M target candidate multi-slot resources from the resources within the resource selection window based on the candidate single-slot resources in the first candidate set may include:

Step 1: The terminal selects a first candidate single-slot resource from the first candidate set;

Step 2: the terminal selects a first candidate multi-slot resource from the resources in the resource selection window; the first candidate multi-slot resource is N consecutive slots including the first candidate single-slot resource;

Step 3: The terminal determines whether the first candidate multi-slot resource satisfies a first condition; if it is determined that the first candidate multi-slot resource satisfies the first condition, the terminal determines the first candidate multi-slot resource as a target candidate multi-slot resource;

When the number of the determined target candidate multi-slot resources is less than M, the terminal repeatedly executes the above steps 1 to 3.

Specifically, the terminal can first select a candidate single-slot resource in the first candidate set as the first candidate single-slot resource, and then select N consecutive slot resources including the first candidate single-slot resource from the resources in the resource selection window as the first candidate multi-slot resource, and further determine whether the first candidate multi-slot resource meets the first condition. When it is determined that the first candidate multi-slot resource meets the first condition, the terminal determines that the first candidate multi-slot resource is the target candidate multi-slot resource.

If the terminal obtains an insufficient number of target candidate multi-slot resources after executing the above steps, specifically when the number of target candidate multi-slot resources is less than M, the terminal can repeat the above steps to obtain more target candidate multi-slot resources to meet the resource allocation requirements of the terminal.

Repeat step 1 and step 2 above until the first candidate multi-slot resource corresponding to each candidate single-slot resource in the first candidate set is obtained;

The terminal determines whether each first candidate multi-slot resource satisfies a first condition respectively; when it is determined that the first candidate multi-slot resource satisfies the first condition, the terminal determines the first candidate multi-slot resource as a target candidate multi-slot resource.

Specifically, the terminal may first select a candidate single-slot resource in the first candidate set as the first candidate single-slot resource, and then select N consecutive slot resources including the first candidate single-slot resource from the resources in the resource selection window as the first candidate multi-slot resource;

The difference between this embodiment and the previous embodiment is that the above steps can be repeated until the first candidate multi-slot resources corresponding to each candidate single-slot resource in the first candidate set are obtained, and then each first candidate multi-slot resource is judged whether it meets the first condition, and the first candidate multi-slot resource that meets the first condition is used as the target candidate multi-slot resource.

Optionally, the first condition may include at least one of the following:

1) The number of candidate single-slot resources in the first candidate multi-slot resource in the first candidate set is greater than or equal to a first number threshold;

2) The proportion of candidate single-slot resources in the first candidate multi-slot resource in the first candidate set is greater than or equal to a first proportion threshold;

For example, if the number of candidate single-slot resources in the first candidate multi-slot resource is 4, the number of candidate single-slot resources in the first candidate set is 10, and the number of candidate single-slot resources in the first candidate multi-slot resource in the first candidate set is 2, that is, the number of candidate single-slot resources in both the first candidate multi-slot resource and the first candidate set is 2, then the proportion of candidate single-slot resources in the first candidate multi-slot resource in the first candidate set is: 2/10=0.2.

3) the ratio of the number of candidate single-slot resources belonging to the first candidate set in the first candidate multi-slot resource to the number of single-slot resources in the first candidate multi-slot resource is greater than or equal to a second ratio threshold;

For example, if the number of candidate single-slot resources in the first candidate multi-slot resource is 4, the number of candidate single-slot resources in the first candidate set is 10, and the number of candidate single-slot resources in the first candidate multi-slot resource that belong to the first candidate set is 2, that is, the number of candidate single-slot resources in both the first candidate multi-slot resource and the first candidate set is 2;

Then the ratio of the number of candidate single-slot resources belonging to the first candidate set in the first candidate multi-slot resource to the number of single-slot resources in the first candidate multi-slot resource is: 2/4=0.5.

4) The number of single-slot resources in the first candidate multi-slot resources in the second candidate set is greater than or equal to a second number threshold;

5) The proportion of single-slot resources in the first candidate multi-slot resources in the second candidate set is greater than or equal to a third proportion threshold;

6) The ratio of the number of candidate single-slot resources belonging to the second candidate set in the first candidate multi-slot resources to the number of single-slot resources in the first candidate multi-slot resources is greater than or equal to a fourth ratio threshold;

7) A first value of RSRP of the N single-slot resources in the first candidate multi-slot resource is less than a first signal threshold;

8) The first RSRP of some single-slot resources in the N slots in the first candidate multi-slot resource The value is less than a second signal threshold;

9) A first value of RSRP of any single slot resource among the N slots in the first candidate multi-slot resource is less than a third signal threshold;

10) A difference between a first value of the RSRP of the first candidate multi-slot resource and the RSRP of each candidate single-slot resource in the first candidate multi-slot resource that belongs to the first candidate set is less than a fourth signal threshold;

11) A difference between a first value of the RSRP of the first candidate multi-slot resource and a first value of the RSRP of at least one candidate single-slot resource in the first candidate multi-slot resource that belongs to the first candidate set is less than a fifth signal threshold;

12) A first time interval between the first candidate multi-slot resource and at least one determined target candidate multi-slot resource satisfies a second condition;

The second candidate set is a preset number of candidate single-slot resources in the first candidate set;

The first value includes any one of an average value, an equivalent value, a maximum value and a minimum value.

Specifically, the second candidate set is a preset number of candidate single-slot resources in the first candidate set. Optionally, the second candidate set is a preset number of candidate single-slot resources that are consecutively connected to the single-slot resources corresponding to the minimum RSRP.

Optionally, the first number threshold, the first ratio threshold, the second ratio threshold, the second number threshold, the third ratio threshold, the fourth ratio threshold, the first signal threshold, the second signal threshold, the third signal threshold, the fourth signal threshold and the fifth signal threshold may be the same or different.

Optionally, the second condition may include at least one of the following:

1. The first time interval is greater than or equal to the time interval for Hybrid Automatic Repeat Request (HARQ) feedback and scheduling retransmission;

2. The first time interval is greater than or equal to the time it takes for the terminal to perform at least one LBT.

Specifically, the first candidate multi-slot resource and at least one target candidate multi-slot resource that meets the first condition meet the timing condition, and the timing condition may be a time interval that meets the time interval for HARQ feedback and scheduled retransmission, for example, a time interval that is greater than or equal to the time interval for HARQ feedback and scheduled retransmission, and/or, meets the time for performing at least one LBT, for example, a time interval that is greater than or equal to the time for the terminal to perform at least one LBT.

Optionally, the implementation manner in which the terminal determines X first candidate sets based on the resources in the resource selection window may include:

The terminal obtains X first thresholds;

The terminal determines a first candidate set from the resources in the resource selection window based on each first threshold.

Specifically, the terminal may obtain X first thresholds, and based on the first thresholds, determine a first candidate set in the resources in the resource selection window respectively, and a total of X first candidate sets may be obtained, that is, different first candidate sets may be determined according to different first thresholds.

Optionally, the first threshold includes an RSRP threshold and/or a resource ratio value.

Specifically, different first candidate sets may be determined according to different RSRP thresholds and/or resource ratio values.

For the resource ratio value, during the resource selection process, one condition for ending the resource selection is: when the ratio of the selected resources to all resources in the resource selection window is greater than a certain ratio value, here we mean that there can be multiple ratio values and multiple first candidate sets can be obtained.

For the RSRP threshold, in the resource selection process, the condition for excluding a certain resource is that it is greater than the RSRP threshold. Here, we want to determine multiple RSRP thresholds for resource selection and obtain multiple first candidate sets.

Optionally, the implementation manner in which the terminal selects the first candidate single-slot resource from the first candidate set may include any one of the following:

a) the terminal sorts all candidate single-slot resources in the first candidate set based on the RSRP of the candidate single-slot resources, and selects the first candidate single-slot resource as the first candidate single-slot resource;

b) The terminal randomly selects a candidate single-slot resource from all candidate single-slot resources in the first candidate set as the first candidate single-slot resource.

Specifically, the terminal can sort all candidate single-slot resources in the first candidate set according to the RSRP measurement values corresponding to all candidate single-slot resources in the first candidate set, and select the first-ranked candidate single-slot resource as the first candidate single-slot resource, for example, select a candidate single-slot resource that is ranked at the front, back, center, or a specified position as the first candidate single-slot resource.

Optionally, after sorting all candidate single-slot resources in the first candidate set, the terminal may determine a preset (eg, corresponding to the minimum RSRP) or random candidate single-slot resource as the first single-slot resource.

Optionally, when the number of determined target candidate multi-slot resources is less than M, the implementation manner of the terminal repeatedly performing the above steps 1 to 3 may include:

When the number of determined target candidate multi-slot resources is less than M, the terminal excludes the first candidate single-slot resource from the first candidate set, or excludes the candidate single-slot resource in the first candidate multi-slot resource from the first candidate set; the terminal repeats steps 1 to 3 above.

Specifically, when the number of target candidate multi-slot resources determined by steps 1 to 3 is less than M, the terminal can exclude the first candidate single-slot resources corresponding to the previous steps 1 to 3 from the first candidate set, or exclude each candidate single-slot resource in the first candidate multi-slot resources from the first candidate set, and repeat the above steps 1 to 3 to obtain more target candidate multi-slot resources to meet the resource allocation requirements of the terminal.

In one embodiment, since resources may change dynamically, the terminal may not exclude the candidate single-slot resources in the first candidate set, and directly repeat the above steps 1 to 3 to obtain more target candidate multi-slot resources to meet the resource allocation requirements of the terminal.

Optionally, when the number of determined target candidate multi-slot resources is less than M, the terminal performs the target operation;

The target operation includes at least one of the following:

1. Execute the step of the terminal determining X first candidate sets based on resources in the resource selection window;

2. Adjust the first threshold;

3. Adjust N;

4. Adjust at least one of the first number threshold, the second number threshold, the first ratio threshold, the second ratio threshold, the third ratio threshold, the fourth ratio threshold, the first signal threshold, the second signal threshold, the third signal threshold, the fourth signal threshold, the fifth signal threshold and the number of candidate single-slot resources included in the second candidate set; execute the step of determining the M target candidate multi-slot resources from the resources within the resource selection window based on the candidate single-slot resources in the first candidate set.

Specifically, when the number of determined target candidate multi-slot resources is less than M, if more than M target candidate multi-slot resources cannot be obtained in the first candidate set, that is, if all candidate single-slot resources in the first candidate set are executed after the above steps 1 to 3, more than M target candidate multi-slot resources still cannot be obtained, the terminal can perform the following target operation:

1) Reacquiring the first candidate set, the first threshold may be adjusted, for example, the RSRP threshold may be increased, to reacquire the first candidate set, and performing the above steps 1 to 3;

2) Adjust the size of N, for example, reduce N, and then start from step 2;

3) adjusting at least one of the first number threshold, the second number threshold, the first ratio threshold, the second ratio threshold, the third ratio threshold and the fourth ratio threshold, for example, lowering at least one of the first number threshold, the second number threshold, the first ratio threshold, the second ratio threshold, the third ratio threshold and the fourth ratio threshold, and then starting from step 2;

4) adjusting at least one of the first signal threshold, the second signal threshold, the third signal threshold, the fourth signal threshold, and the fifth signal threshold, for example, increasing at least one of the first signal threshold, the second signal threshold, the third signal threshold, the fourth signal threshold, and the fifth signal threshold, and then starting from step 2;

5) Adjusting the elements of the second candidate set, for example, increasing the elements of the second candidate set, can be understood as increasing the number of candidate single-slot resources included in the second candidate set, and then executing from step 2.

Optionally, after obtaining a preset number M (a positive integer greater than or equal to 1) of target candidate multi-slot resources, the terminal may end the resource selection.

Optionally, the terminal selects SL resources to be transmitted and/or reserved SL resources from the M target candidate multi-slot resources.

Specifically, the terminal may select SL resources to be transmitted and/or reserved SL resources from the determined M target candidate multi-slot resources, and the SL resources to be transmitted and/or reserved SL resources are both used for SL transmission by the terminal.

Optionally, the implementation manner in which the terminal selects the SL resource to be transmitted and/or the reserved SL resource from the M target candidate multi-slot resources may include:

The terminal randomly selects SL resources to be transmitted and/or reserved SL resources from the M target candidate multi-slot resources.

Specifically, the terminal can randomly select the resource to be transmitted and the resource to be transmitted from the M target candidate multi-slot resources obtained. Reserved resources, specifically, you can select SL resources to be transmitted and/or reserved SL resources.

The terminal performs a sorting operation on the M target candidate multi-slot resources, and selects the second ranked target candidate multi-slot resource as the SL resource to be transmitted and/or the reserved SL resource.

Specifically, the terminal can sort the M target candidate multi-slot resources, select the second-ranked target candidate multi-slot resource as the SL resource to be transmitted and/or the reserved SL resource, for example, select the target candidate multi-slot resource ranked at the front, back, middle, or a specified position as the SL resource to be transmitted and/or the reserved SL resource.

Optionally, the sorting operation may be based on at least one of the following:

1) any one of the first values of the RSRP of the target candidate multi-slot resource; the first value includes: any one of an average value, an equivalent value, a maximum value, and a minimum value;

2) the number N of target candidate multi-slot resources;

3) the number of candidate single-slot resources belonging to the first candidate set in the target candidate multi-slot resource;

4) the ratio of the number of candidate single-slot resources belonging to the first candidate set in the target candidate multi-slot resource to the number of single-slot resources in the target candidate multi-slot resource;

5) The ratio of the number of candidate single-slot resources belonging to the first candidate set in the target candidate multi-slot resources to the number of candidate single-slot resources in the first candidate set.

Optionally, N may satisfy at least one of the following:

1. Configured by high-level parameters;

2. Less than or equal to the maximum number of repeated transmissions allowed;

3. Less than or equal to the maximum number of slots that can be transmitted continuously;

4. It is related to the priority of the data or channel transmitted by the terminal;

Specifically, it is related to the (layer 1) priority of the terminal transmission.

5. Each resource pool is configured with an N;

6. Related to LBT priority;

Specifically, it is related to the LBT priority class.

7. Determined based on any one of the average, maximum or minimum RSRP, modulation and coding scheme (MCS) and channel quality indicator (CQI) of the candidate single-slot resources in the first candidate set.

The following example illustrates the SL resource allocation method provided in the embodiment of the present application.

1. The terminal determines the first candidate set at the physical layer (PHY), reports it to the medium access control (MAC) layer, and performs other steps; specifically:

1) The terminal determines the first candidate set S_A at the PHY layer and reports it to the MAC layer.

2) Optionally, multiple S_A are reported, the first S_A is determined based on RSRP threshold#1 and/or x1%*M_total, and the second S_A is determined based on RSRP threshold#2 and/or x2%*M_total, where RSRP threshold is used The threshold value compared after RSRP measurement, x% is used to determine the proportion of S_A to all resources in the resource selection window, M_total is the number of all candidate resources in the resource selection window, where x1%<x2%<…, RSRP threshold#1<RSRP threshold#2<….

3) Optionally, the MAC layer gives priority to selecting resources in the first S_A. If the selection fails, it selects resources in the first and second S_As.

4) The terminal sorts the candidate single-slot resources in the first candidate set at the MAC layer, specifically, sorting them from small to large according to RSRP, and determines at least one first candidate multi-slot resource, each of which is the next N consecutive slots including the candidate single-slot resource;

Wherein, N can be configured by a high-level parameter to be at least one of the following:

i. Less than or equal to the maximum number of repeated transmissions allowed;

ii. Less than or equal to the maximum number of slots that can be transmitted continuously;

iii. Related to the (layer 1) priority of the terminal transmission;

iv. Determined based on resource pool;

v. Related to LBT priority class;

vi. Determined based on information such as RSRP, MCS and CQI.

5) The first candidate multi-slot resource obtained is judged, and when the first condition is met, it is determined as the target candidate multi-slot resource, and the first condition includes at least one of the following:

i. The number and/or proportion of the candidate single-slot resources in the first candidate multi-slot resource in the first candidate set is greater than or equal to the second threshold.

ii. The ratio of the number of candidate single-slot resources in the first candidate set in the first candidate multi-slot resource to the number of candidate single-slot resources in the first candidate multi-slot resource is greater than or equal to the third threshold.

iii. The number and/or proportion of the candidate single-slot resources in the first candidate multi-slot resource in the second candidate set is greater than or equal to a fourth threshold.

iv. The ratio of the number of candidate single-slot resources in the first candidate multi-slot resource that belong to the second candidate set to the number of candidate single-slot resources in the first candidate multi-slot resource is greater than or equal to the fifth threshold.

Optionally, the second candidate set is a preset number of candidate single-slot resources in the first candidate set.

Optionally, the second candidate set is a first number of consecutive candidate single-slot resources corresponding to the minimum RSRP.

v. The first candidate multi-slot resource and at least one target candidate multi-slot resource that meets the first condition meet the timing condition, and the timing condition is that the time interval meets the time interval for HARQ feedback and scheduling retransmission, and/or meets the time for executing at least one LBT.

6) Randomly select the resources to be transmitted and the reserved resources from the obtained target candidate multi-slot resources.

2. The terminal executes the above steps at the PHY layer.

1) The terminal determines the first candidate set at the PHY layer;

2) The terminal sorts the candidate single-slot resources in the first candidate set from small to large according to RSRP, and determines At least one first candidate multi-slot resource, each first candidate multi-slot resource being the next N consecutive slots including the candidate single-slot resource;

i. Less than or equal to the maximum number of repeated transmissions allowed;

iii. Related to the (layer 1) priority of the terminal transmission;

iv. Determined based on resource pool;

v. Related to LBT priority class;

vi. Determined based on information such as RSRP, MCS and CQI.

3) The first candidate multi-slot resource obtained is judged, and when a first condition is met, it is determined as a target candidate multi-slot resource, and the first condition includes at least one of the following:

v. An average value, an equivalent value, a maximum value and/or a minimum value of the RSRP of the N candidate single-slot resources in the first candidate multi-slot resource is less than a preset first RSRP threshold.

vi. A preset partial value of RSRP of N slots may be less than a preset second RSRP threshold.

vii. The RSRP value of any single slot resource among the N slots may be less than the preset third RSRP threshold.

viii. The first candidate multi-slot resource and at least one target candidate multi-slot resource that meets the first condition meet the timing condition, and the timing condition is that the time interval meets the time interval for HARQ feedback and scheduling retransmission, and/or meets the time for performing at least one LBT.

4) Sort the obtained target candidate multi-slot resources, and select the top-ranked ones as the resources to be transmitted and reserved resources.

Optionally, the sorting may be based on at least one of the following:

i. The average, equivalent, maximum and/or minimum RSRP of the target candidate multi-slot resource;

ii. The number N of target candidate multi-slot resources.

3. Multi-slot-based mode 2 resource allocation, including:

1) Conditional restrictions on multi-slot resources, specifically, a preset proportion of slots in the first candidate multi-slot resource are in the first candidate set S-A.

2) Sort the multi-slot resources by RSRP and give priority to resources with smaller RSRP.

According to the SL mode 2 resource allocation method in the prior art, resources are obtained based on single slot allocation, and how to further obtain multi-slot resources needs to be designed.

In an embodiment of the present application, the terminal supports multi-slot-based resource allocation, so that multi-slot SL transmission can be performed in an unlicensed spectrum. Once LBT is successful, the terminal can continuously transmit multiple slots, thereby increasing the time-frequency resource efficiency of SL transmission.

The SL resource allocation method provided in the embodiment of the present application can be executed by a SL resource allocation device. In the embodiment of the present application, the SL resource allocation device executing the SL resource allocation method is taken as an example to illustrate the SL resource allocation device provided in the embodiment of the present application.

FIG5 is a schematic diagram of the structure of a SL resource allocation device provided in an embodiment of the present application. As shown in FIG5 , the SL resource allocation device 500, applied to a terminal, includes:

A determination module 501 is used to determine M target candidate multi-slot resources based on resources in a resource selection window;

In the SL resource allocation device provided in the embodiment of the present application, the determination module of the terminal can determine M target candidate multi-slot resources for SL transmission based on the resources within the resource selection window, and each target candidate multi-slot resource includes N consecutive slot resources; the terminal can select N consecutive slot resources as target candidate multi-slot resources, that is, the terminal supports multi-slot-based resource allocation, so that the terminal can use the target candidate multi-slot resources to perform multi-slot SL transmission in the unlicensed spectrum, and use multiple consecutive slot resources for transmission at the same time, effectively increasing the time-frequency resource efficiency of SL transmission.

Optionally, the resources within the resource selection window include at least one target RB set; the target RB set is the minimum frequency domain unit of LBT.

Optionally, the determination module 501 is specifically configured to:

Based on the resources in the resource selection window, determine X first candidate sets; each first candidate set includes at least one candidate single-slot resource, and X is a positive integer;

Determine the M target candidate multi-slot resources from the resources within the resource selection window based on the candidate single-slot resources in the first candidate set;

Among them, each target candidate multi-slot resource is N consecutive slots including at least one candidate single-slot resource in the first candidate set; and each target candidate multi-slot resource satisfies the first condition.

Optionally, the determining module 501 is further specifically configured to perform the following steps:

Step 1: Select a first candidate single-slot resource from the first candidate set;

Step 2: Select a first candidate multi-slot resource from the resources in the resource selection window; the first candidate multi-slot resource is N consecutive slots including the first candidate single-slot resource;

Step 3: Determine whether the first candidate multi-slot resource satisfies a first condition; if it is determined that the first candidate multi-slot resource satisfies the first condition, the terminal determines the first candidate multi-slot resource as a target candidate multi-slot resource;

The determination module 501 is further specifically configured to, when the number of the determined target candidate multi-slot resources is less than M, repeatedly execute the above steps 1 to 3.

The determination module 501 is further specifically configured to:

Determine whether each first candidate multi-slot resource satisfies the first condition respectively; when it is determined that the first candidate multi-slot resource satisfies the first condition, the terminal determines the first candidate multi-slot resource as the target candidate multi-slot resource.

Optionally, the first condition may include at least one of the following:

8) A first value of RSRP of some single-slot resources in the N slots in the first candidate multi-slot resource is less than a second signal threshold;

10) A difference between a first value of the RSRP of the first candidate multi-slot resource and the RSRP of each candidate single-slot resource belonging to the first candidate set in the first candidate multi-slot resource is less than a fourth signal threshold;

Optionally, the second condition may include at least one of the following:

1. The first time interval is greater than or equal to the time interval for HARQ feedback and scheduling retransmission;

Optionally, the determining module 501 is further specifically configured to:

Obtain X first thresholds;

Based on each first threshold, a first candidate set is determined from the resources within the resource selection window.

Optionally, the first threshold may include an RSRP threshold and/or a resource ratio value.

Optionally, the determining module 501 is further specifically configured to perform any of the following:

a) sorting all candidate single-slot resources in the first candidate set based on the RSRP of the candidate single-slot resources, and selecting the first candidate single-slot resource as the first candidate single-slot resource;

b) Randomly selecting a candidate single-slot resource from all candidate single-slot resources in the first candidate set as the first candidate single-slot resource.

Optionally, the determining module 501 is further specifically configured to:

In a case where the number of determined target candidate multi-slot resources is less than M, the terminal excludes the first candidate single-slot resource from the first candidate set, or excludes the candidate single-slot resource in the first candidate multi-slot resource from the first candidate set;

Repeat steps 1 to 3 above.

Optionally, the SL resource allocation device 500 further includes a processing module, and the processing module is used to:

When the number of determined target candidate multi-slot resources is less than M, the target operation is performed;

The target operation includes at least one of the following:

2. Adjust the first threshold;

3. Adjust N;

Optionally, the processing module is further used to: select SL resources to be transmitted and/or reserved SL resources from the M target candidate multi-slot resources.

Optionally, the processing module is further specifically used to: randomly select SL resources to be transmitted and/or reserved SL resources from the M target candidate multi-slot resources.

Optionally, the M target candidate multi-slot resources are sorted, and the second ranked target candidate multi-slot resource is selected as the SL resource to be transmitted and/or the reserved SL resource.

2) the number N of target candidate multi-slot resources;

Optionally, N may satisfy at least one of the following:

1. Configured by high-level parameters;

2. Less than or equal to the maximum number of repeated transmissions allowed;

5. Each resource pool is configured with an N;

6. Related to LBT priority;

7. Determine based on any one of an average, maximum or minimum RSRP, a modulation and coding strategy MCS and a channel quality indicator CQI of the candidate single-slot resources in the first candidate set.

The SL resource allocation device in the embodiment of the present application 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 it can be other devices other than a terminal. Exemplarily, the terminal can include but is not limited to the types of terminal 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

The SL resource allocation device provided in the embodiment of the present application can implement each process implemented by the method embodiment of Figure 4 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

FIG6 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. As shown in FIG6 , the communication device 600 includes a processor 601 and a memory 602. The memory 602 stores a program or instruction that can be run on the processor 601. For example, when the communication device 600 is a terminal, the program or instruction is executed by the processor 601 to implement the various steps of the above-mentioned SL resource allocation method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

The embodiment of the present application also provides a terminal, including a processor and a communication interface, the processor is used to determine M target candidate multi-slot multi-slot resources based on resources in a resource selection window;

The M target candidate multi-slot resources are used for SL transmission, and each target candidate multi-slot resource includes resources of N consecutive time slots, where N is an integer greater than 1 and M is a positive integer. This terminal embodiment corresponds to the above-mentioned terminal side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this terminal embodiment and can achieve the same technical effect.

Figure 7 is a structural diagram of the terminal provided in an embodiment of the present application. As shown in Figure 7, the terminal 700 includes but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709 and at least some of the components of a processor 710.

Those skilled in the art will appreciate that the terminal 700 may also include a power source (such as a battery) for supplying power to each component, and the power source may be logically connected to the processor 710 through a power management system, so as to implement functions such as managing charging, discharging, and power consumption management through the power management system. The terminal structure shown in FIG7 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange components differently, which will not be described in detail here.

It should be understood that in the embodiment of the present application, the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042, and the GPU 7041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 707 includes a touch panel 7071 and at least one of other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 may include two parts: a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (such as a volume control key, a switch key, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

In the embodiment of the present application, after receiving downlink data from the network side device, the RF unit 701 can transmit the data to the processor 710 for processing; in addition, the RF unit 701 can send uplink data to the network side device. Generally, the RF unit 701 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

The memory 709 can be used to store software programs or instructions and various data. The memory 709 can mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area can store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 709 can include a volatile memory or a non-volatile memory, or the memory 709 can include a volatile and a non-volatile memory. Both non-volatile memory. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM) or a flash memory. The volatile memory can be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous connection dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory 709 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

The processor 710 may include one or more processing units; optionally, the processor 710 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 710.

An embodiment of the present application also provides a readable storage medium, which may be volatile or non-volatile, and stores a program or instruction. When the program or instruction is executed by a processor, the various processes of the above-mentioned SL resource allocation method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

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

An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned SL resource allocation method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

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

An embodiment of the present application further provides a computer program/program product, which is stored in a storage medium. The computer program/program product is executed by at least one processor to implement the various processes of the above-mentioned SL resource allocation method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a..." does not exclude the existence of other identical elements in the process, method, article or device that includes the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also be Including performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted, or combined. In addition, the features described with reference to certain examples can be combined in other examples.

Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.

The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

A sidelink SL resource allocation method, comprising:

The terminal determines M target candidate multi-slot resources based on the resources in the resource selection window;

The M target candidate multi-slot resources are used for SL transmission, and each target candidate multi-slot resource includes resources of N consecutive time slots, where N is an integer greater than 1 and M is a positive integer.
According to the SL resource allocation method according to claim 1, the resources within the resource selection window include at least one target resource block group RB set; the target RB set is the minimum frequency domain unit of listen-before-talk LBT.
The SL resource allocation method according to claim 1 or 2, wherein the terminal determines M target candidate multi-slot resources based on resources within the resource selection window, comprising:

The terminal determines X first candidate sets based on the resources in the resource selection window; each first candidate set includes at least one candidate single-slot resource, and X is a positive integer;

The terminal determines the M target candidate multi-slot resources from resources within the resource selection window based on the candidate single-slot resources in the first candidate set;

Among them, each target candidate multi-slot resource is N consecutive slots including at least one candidate single-slot resource in the first candidate set; and each target candidate multi-slot resource satisfies the first condition.
The SL resource allocation method according to claim 3, wherein the terminal determines the M target candidate multi-slot resources from the resources within the resource selection window based on the candidate single-slot resources in the first candidate set, comprising:

Step 1: The terminal selects a first candidate single-slot resource from the first candidate set;

Step 2: The terminal selects a first candidate multi-slot resource from the resources in the resource selection window; the first candidate multi-slot resource is N consecutive slots including the first candidate single-slot resource;

Step 3: The terminal determines whether the first candidate multi-slot resource satisfies a first condition; if it is determined that the first candidate multi-slot resource satisfies the first condition, the terminal determines the first candidate multi-slot resource as a target candidate multi-slot resource;

When the number of the determined target candidate multi-slot resources is less than M, the terminal repeatedly executes the above steps 1 to 3.
The SL resource allocation method according to claim 3, wherein the terminal determines the M target candidate multi-slot resources from the resources within the resource selection window based on the candidate single-slot resources in the first candidate set, comprising:

Step 1: The terminal selects a first candidate single-slot resource from the first candidate set;

Step 2: The terminal selects a first candidate multi-slot resource from the resources in the resource selection window; the first candidate multi-slot resource is N consecutive slots including the first candidate single-slot resource;

Repeat step 1 and step 2 above until the first candidate multi-slot resource corresponding to each candidate single-slot resource in the first candidate set is obtained;

The terminal determines whether each first candidate multi-slot resource satisfies the first condition; When the multi-slot resource satisfies the first condition, the terminal determines the first candidate multi-slot resource as the target candidate multi-slot resource.
The SL resource allocation method according to any one of claims 3 to 5, wherein the first condition includes at least one of the following:

The number of candidate single-slot resources in the first candidate multi-slot resource in the first candidate set is greater than or equal to a first number threshold;

A proportion of candidate single-slot resources in the first candidate multi-slot resource in the first candidate set is greater than or equal to a first proportion threshold;

The ratio of the number of candidate single-slot resources belonging to the first candidate set in the first candidate multi-slot resource to the number of single-slot resources in the first candidate multi-slot resource is greater than or equal to a second ratio threshold;

The number of single-slot resources in the first candidate multi-slot resources in the second candidate set is greater than or equal to a second number threshold;

The proportion of the single-slot resources in the first candidate multi-slot resources in the second candidate set is greater than or equal to a third proportion threshold;

The ratio of the number of candidate single-slot resources belonging to the second candidate set in the first candidate multi-slot resource to the number of single-slot resources in the first candidate multi-slot resource is greater than or equal to a fourth ratio threshold;

A first value of a reference signal received power RSRP of the N single-slot resources in the first candidate multi-slot resource is less than a first signal threshold;

A first value of RSRP of some single-slot resources in the N slots in the first candidate multi-slot resource is less than a second signal threshold;

A first value of RSRP of any single slot resource among the N slots in the first candidate multi-slot resource is less than a third signal threshold;

A difference between a first value of the RSRP of the first candidate multi-slot resource and the RSRP of each candidate single-slot resource in the first candidate multi-slot resource that belongs to the first candidate set is less than a fourth signal threshold;

a difference between a first value of the RSRP of the first candidate multi-slot resource and a first value of the RSRP of at least one candidate single-slot resource in the first candidate multi-slot resource that belongs to the first candidate set is less than a fifth signal threshold;

A first time interval between the first candidate multi-slot resource and at least one determined target candidate multi-slot resource satisfies a second condition;

The second candidate set is a preset number of candidate single-slot resources in the first candidate set;

The first value includes any one of an average value, an equivalent value, a maximum value and a minimum value.
The SL resource allocation method according to claim 6, wherein the second condition includes at least one of the following:

The first time interval is greater than or equal to the time interval for hybrid automatic repeat request HARQ feedback and scheduled retransmission;

The first time interval is greater than or equal to the time for the terminal to perform at least one LBT.
The SL resource allocation method according to any one of claims 3 to 7, wherein the terminal allocates resources based on the resource The resources in the source selection window determine X first candidate sets, including:

The terminal obtains X first thresholds;

The terminal determines a first candidate set from the resources in the resource selection window based on each first threshold.
The SL resource allocation method according to claim 8, wherein the first threshold includes an RSRP threshold and/or a resource ratio value.
The SL resource allocation method according to claim 4 or 5, wherein the terminal selects the first candidate single-slot resource in the first candidate set, including any of the following:

The terminal sorts all candidate single-slot resources in the first candidate set based on RSRP of the candidate single-slot resources, and selects the first candidate single-slot resource as the first candidate single-slot resource;

The terminal randomly selects a candidate single-slot resource from all candidate single-slot resources in the first candidate set as the first candidate single-slot resource.
The SL resource allocation method according to claim 4, wherein the terminal repeatedly performs steps 1 to 3 when the number of determined target candidate multi-slot resources is less than M, comprising:

When the number of determined target candidate multi-slot resources is less than M, the terminal excludes the first candidate single-slot resource from the first candidate set, or excludes the candidate single-slot resource in the first candidate multi-slot resource from the first candidate set; the terminal repeats steps 1 to 3 above.
The SL resource allocation method according to claim 3, 6 or 8, wherein the method further comprises:

In a case where the number of determined target candidate multi-slot resources is less than M, the terminal performs the target operation;

The target operation includes at least one of the following:

Executing the step of determining, by the terminal, X first candidate sets based on resources within the resource selection window;

adjusting the first threshold;

Adjust N;

Adjust at least one of the first number threshold, the second number threshold, the first ratio threshold, the second ratio threshold, the third ratio threshold, the fourth ratio threshold, the first signal threshold, the second signal threshold, the third signal threshold, the fourth signal threshold, the fifth signal threshold and the number of candidate single-slot resources included in the second candidate set; execute the step of determining the M target candidate multi-slot resources among the resources within the resource selection window based on the candidate single-slot resources in the first candidate set.
The SL resource allocation method according to any one of claims 1 to 12, wherein the method further comprises:

The terminal selects SL resources to be transmitted and/or reserved SL resources from the M target candidate multi-slot resources.
The SL resource allocation method according to claim 13, wherein the terminal selects the SL resource to be transmitted and/or the reserved SL resource from the M target candidate multi-slot resources, comprising:

The terminal randomly selects the SL resource to be transmitted and/or the reserved SL resource from the M target candidate multi-slot resources. SL resources.
The SL resource allocation method according to claim 13, wherein the terminal selects the SL resource to be transmitted and/or the reserved SL resource from the M target candidate multi-slot resources, comprising:

The terminal performs a sorting operation on the M target candidate multi-slot resources, and selects the second ranked target candidate multi-slot resource as the SL resource to be transmitted and/or the reserved SL resource.
The SL resource allocation method according to claim 15, wherein the sorting operation is based on at least one of the following:

Any one of the first values of the RSRP of the target candidate multi-slot resource; the first value includes: any one of an average value, an equivalent value, a maximum value, and a minimum value;

The number N of target candidate multi-slot resources;

the number of candidate single-slot resources belonging to the first candidate set in the target candidate multi-slot resource;

a ratio of the number of candidate single-slot resources belonging to the first candidate set in the target candidate multi-slot resource to the number of single-slot resources in the target candidate multi-slot resource;

The ratio of the number of candidate single-slot resources belonging to the first candidate set in the target candidate multi-slot resources to the number of candidate single-slot resources in the first candidate set.
The SL resource allocation method according to any one of claims 1 to 16, wherein N satisfies at least one of the following:

Configured by high-level parameters;

Less than or equal to the maximum number of repeated transmissions allowed;

Less than or equal to the maximum number of slots that can be transmitted continuously;

Related to the priority of the data or channel transmitted by the terminal;

Each resource pool is configured with an N;

Related to LBT priority;

The determination is based on any one of an average, maximum or minimum RSRP, a modulation and coding strategy MCS and a channel quality indication CQI of the candidate single-slot resources of the first candidate set.
A sidelink SL resource allocation device, comprising:

A determination module, configured to determine M target candidate multi-slot resources based on resources within the resource selection window;

The M target candidate multi-slot resources are used for SL transmission, and each target candidate multi-slot resource includes resources of N consecutive time slots, where N is an integer greater than 1 and M is a positive integer.
A terminal comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the sidelink SL resource allocation method as described in any one of claims 1 to 17 are implemented.
A readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, the steps of the sidelink SL resource allocation method as described in any one of claims 1 to 17 are implemented.