Method for determining sidelink feedback resource, terminal and network side device

Abstract

The present application discloses a method, an apparatus, a terminal and a storage medium for determining a sidelink feedback resource, which belong to the field of communication technology, and the method for determining a sidelink feedback resource in an embodiment of the present application includes: a first terminal determines a sidelink SL feedback resource, and the SL feedback resource is used by the first terminal to send feedback information; or the method for determining a sidelink feedback resource in an embodiment of the present application includes: a feedback information receiving end device detects or receives feedback information on a sidelink SL feedback resource, and the SL feedback resource is used by the first terminal to send feedback information.

Description

[Technical field]

[0001] The present application relates to the field of communications technology, and in particular to a method, an apparatus, a terminal, and a storage medium for determining sidelink feedback resource. [Background technology]

[0002] On the sidelink (SL, also referred to as sublink, side link, edge link, etc.), a transmission node can adopt a load based equipment (LBE) method in an unlicensed frequency band to perform channel access and transmit information.

[0003] In R16, the introduction of a physical sidelink feedback channel (PSFCH) can improve system reliability and improve resource utilization in the system. The time-frequency domain resources of the PSFCH and the physical sidelink control channel (PSCCH) or the physical sidelink shared channel (PSSCH) satisfy a predefined mapping relationship, and the transmission flexibility is limited. Due to the existence of other systems that preempt resources on non-licensed frequency bands, the resource location of the PSFCH determined based on the PSSCH / PSCCH and predefined rules may not be applicable to the transmission of the PSFCH.

[0004] When transmitting unicast information on SL, the receiving end is enabled to feedback CSI information, and the transmitting end adjusts transmission parameters according to the CSI information. In a non-licensed frequency band, the resources for feedbacking CSI information need to be preempted and obtained through resource contention with other systems coexisting in this frequency band.

[0005] In unlicensed frequency bands, the flexibility of SL feedback resources is limited and may not be applicable to the transmission of feedback information, which causes the channel access efficiency of terminals to be relatively low and the demand for channel occupied bandwidth in unlicensed frequency bands to be unable to meet. Summary of the Invention [Problem to be solved by the invention]

[0006] The embodiments of the present application provide a method, an apparatus, a terminal, and a storage medium for determining sidelink feedback resources that can solve the problem of relatively low efficiency of SL terminal channel access on unlicensed frequency bands. [Means for solving the problem]

[0007] According to a first aspect, there is provided a method for determining sidelink feedback resources, the method comprising: The method includes a first terminal determining a sidelink SL feedback resource, the SL feedback resource being used by the first terminal to transmit feedback information.

[0008] According to a second aspect, there is provided a method for determining sidelink feedback resources, the method comprising: The feedback information receiving end device includes detecting or receiving feedback information on a sidelink SL feedback resource, where the SL feedback resource is used for the first terminal to transmit the feedback information.

[0009] According to a third aspect, there is provided an apparatus for determining sidelink feedback resources, the apparatus comprising: The sidelink SL feedback resource is used by the first terminal to transmit feedback information.

[0010] According to a fourth aspect, there is provided an apparatus for determining sidelink feedback resources, the apparatus comprising: The method includes: providing a sidelink SL feedback resource for transmitting feedback information from a first terminal;

[0011] According to a fifth aspect, there is provided a terminal comprising a processor, a memory, and a program or instructions stored in the memory and operable to run on the processor, the program or instructions, when executed by the processor, to implement steps of the method for determining sidelink feedback resources according to the first aspect and to implement steps of the method for determining sidelink feedback resources according to the second aspect.

[0012] According to a sixth aspect, there is provided a terminal including a processor and a communication interface, wherein the processor is adapted to determine a sidelink SL feedback resource, the SL feedback resource being used by a first terminal for transmitting feedback information, or the processor is adapted to detect or receive feedback information on a sidelink SL feedback resource, the SL feedback resource being used by a first terminal for transmitting feedback information.

[0013] According to a seventh aspect, there is provided a network side equipment comprising a processor, a memory and a program or instructions stored in the memory and operable to run on the processor, the program or instructions, when executed by the processor, implementing the steps of the method for determining sidelink feedback resources as set forth in the second aspect.

[0014] According to an eighth aspect, there is provided a network side device including a processor and a communication interface, wherein the processor is adapted for detecting or receiving feedback information on a sidelink SL feedback resource, wherein the SL feedback resource is adapted for a first terminal to transmit the feedback information.

[0015] According to a ninth aspect, there is provided a readable storage medium having stored thereon a program or instructions which, when executed by a processor, perform steps of the method for determining sidelink feedback resources according to the first aspect or perform steps of the method for determining sidelink feedback resources according to the second aspect.

[0016] According to a tenth aspect, there is provided a chip, the chip comprising a processor and a communication interface, the communication interface being coupled to the processor, the processor running a program or instructions to implement the method for determining sidelink feedback resource as described in the first aspect or to implement steps of the method for determining sidelink feedback resource as described in the second aspect.

[0017] According to an eleventh aspect, there is provided a computer program / program product, stored on a non-transitory storage medium, the computer program / program product being configured to, when executed by at least one processor, implement the steps of the method for determining sidelink feedback resources according to the first aspect or to implement the steps of the method for determining sidelink feedback resources according to the second aspect. Effect of the Invention

[0018] In an embodiment of the present application, a sidelink SL feedback resource is determined, and the SL feedback resource is used by the first terminal to transmit feedback information, and the feedback resource is determined by the terminal, which improves the flexibility of resource scheduling and can improve the probability of terminal channel access, thereby transmitting feedback information on a non-licensed frequency band and improving system efficiency. [Brief description of the drawings]

[0019] [Figure 1] 1 is a schematic diagram of a wireless communication system to which an embodiment of the present application can be applied; [Diagram 2] 1 is a flowchart of a method for determining sidelink feedback resource according to an embodiment of the present application; [Diagram 3] FIG. 2 is a schematic diagram in which PSFCH is a centralized resource according to an embodiment of the present application; [Figure 4] FIG. 2 is a schematic diagram in which the PSFCH is a distributed resource according to an embodiment of the present application; [Diagram 5] 1 is a schematic diagram of a PSFCH adopting the same frequency domain resource as a PSSCH according to an embodiment of the present application; [Figure 6] 2 is a schematic diagram of a PSFCH adopting the same frequency domain resource as a PSSCH according to an embodiment of the present application; [Figure 7] FIG. 2 is a schematic diagram in which the available resources for PSFCH are some / all of the PSSCH / PSCCH resources according to an embodiment of the present application; [Figure 8] FIG. 1 is a schematic diagram of a frequency domain resource interval of a SL feedback resource according to an embodiment of the present application; [Figure 9] FIG. 2 is a second schematic diagram of frequency domain resource spacing of SL feedback resources according to an embodiment of the present application. [Figure 10] FIG. 2 is a schematic diagram of a PSFCH structure defined based on RE according to an embodiment of the present application; [Figure 11]2 is a second flowchart of a method for determining sidelink feedback resources according to an embodiment of the present application; [Figure 12] FIG. 1 is a structural schematic diagram of a sidelink feedback resource determination device according to an embodiment of the present application; [Figure 13] FIG. 2 is a structural schematic diagram of a sidelink feedback resource determination device according to an embodiment of the present application; [Figure 14] 1 is a structural schematic diagram of a communication device according to an embodiment of the present application; [Figure 15] FIG. 2 is a schematic diagram of a hardware structure for implementing a terminal according to an embodiment of the present application; [Figure 16] FIG. 2 is a structural schematic diagram of a network side device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] The following clearly describes the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application are all within the scope of protection of the present application.

[0021] The terms "first," "second," etc. in the specification and claims of the present application are intended to distinguish between similar objects and are not intended to describe a particular order or sequence. It is to be understood that the terms so used are interchangeable where appropriate, such that the embodiments of the present application may be performed in other orders than those shown or described herein, and that the objects distinguished by "first" and "second" are generally of the same type and do not limit the number of objects, e.g., the first object may be one or more. It is to be noted that "and / or" in the specification and claims represents at least one of the objects connected, and the character " / " generally represents an "or" relationship between the related objects.

[0022] It should be noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be applied to 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 always used interchangeably, and the techniques described may be used in the above-mentioned systems and radio technologies, or in other systems and radio technologies. Although the following description describes a New Radio (NR) system for illustrative purposes and uses NR terminology in most of the description below, these techniques may be applied to applications other than NR system applications, such as 6th Generation (6G) communication systems.

[0023] FIG. 1 shows a schematic diagram of a wireless communication system to which the embodiment of the present application can be applied. The wireless communication system includes a terminal 11 and a network side device 12. Here, the terminal 11 may be called a terminal device or a user terminal (User Equipment, UE), and the terminal 11 may be a terminal side device such as a mobile phone, a tablet personal computer, a laptop computer (or called a notebook computer), a personal digital assistant (PDA), a palmtop computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), a wearable device (Wearable Device) or a vehicle-mounted device (VUE), a pedestrian terminal (PUE), etc., and the wearable device includes a smart watch, a bracelet, an earphone, a pair of glasses, etc. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The network side equipment 12 may be a base station or a core network, where the base station may be called a Node B, an evolved Node B, 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 B node, an evolved B node (eNB), a home B node, a home evolved B node, a WLAN access point, a WiFi node, a transmitting receiving point (TRP), or any other suitable term in the art, and as long as the same technical effect is achieved, the base station is not limited to a specific technical term, and it should be explained that in the embodiments of this application, only a base station in an NR system is taken as an example, but the specific type of the base station is not limited.

[0024] In the following, the method, device, terminal and storage medium for determining sidelink feedback resource according to the embodiments of the present application will be described in detail with reference to several embodiments and application scenarios thereof in conjunction with the drawings.

[0025] FIG. 2 is a flowchart of a method for determining sidelink feedback resource according to an embodiment of the present application. As shown in FIG. 2, the method includes the following steps:

[0026] In step 200, the first terminal determines a sidelink SL feedback resource, which is used by the first terminal to transmit feedback information.

[0027] Optionally, the first terminal is a receiving end device of the PSSCH or PSCCH, and a transmitting end device of the feedback information.

[0028] The first terminal determines a sidelink SL feedback resource, which is used by the first terminal to transmit feedback information.

[0029] Optionally, the sidelink SL feedback resource is determined by at least one of being predefined, preconfigured, configured and / or indicated by a protocol.

[0030] It should be explained that pre-configured means pre-configured by the network side equipment via RRC signaling or pre-configured by the terminal via RRC signaling, configured means configured by the network side equipment via RRC signaling or configured by the terminal via RRC signaling, and indicated means indicated by at least one of MAC CE, DCI and SCI, where the network side equipment indicates by MAC CE and / or DCI and the terminal indicates by MAC CE and / or SCI.

[0031] Optionally, the SL feedback resource comprises: a physical sidelink feedback channel (PSFCH) resource; Channel State Information (CSI) reporting resources; and Hybrid Automatic Repeat reQuest (HARQ) resources.

[0032] In an embodiment of the present application, a sidelink SL feedback resource is determined, and the SL feedback resource is used by the first terminal to transmit feedback information, and the feedback resource is determined by the terminal, which improves the flexibility of resource scheduling and can improve the probability of terminal channel access, thereby transmitting feedback information on a non-licensed frequency band and improving system efficiency.

[0033] Optionally, the sidelink SL feedback resource comprises: The SL feedback resource is a distributed resource; The SL feedback resource is a centralized resource; the SL feedback resource is determined based on a resource allocation or a resource structure of a physical sidelink control channel PSCCH and / or a physical sidelink shared channel PSSCH.

[0034] Here, the SL feedback resource being a distributed resource may be understood to mean that the SL feedback resource is transmitted based on a distributed structure, or is a resource that is discontinuously allocated in the frequency domain.

[0035] Here, centralized resources may be understood as resources that are allocated contiguously in the frequency domain.

[0036] In some alternative embodiments, when the SL feedback resource is a distributed resource, determining the sidelink SL feedback resource comprises: determining a bandwidth occupied by the SL feedback resource; determining a frequency domain resource granularity occupied by the SL feedback resource; determining a frequency domain resource interval of the SL feedback resource; determining at least one of a frequency domain resource location, a frequency domain resource size, an interlace index, and an interlace number of the SL feedback resource.

[0037] Optionally, the bandwidth occupied by the SL feedback resource is Fractional bandwidth BWP, one or more carrier bandwidths; The bandwidth of the PSCCH, The bandwidth of the PSSCH, a PSCCH frequency domain subset; a PSSCH frequency domain subset; and a frequency domain collection range of one or more resource block (RB) sets.

[0038] Here, the PSCCH bandwidth or the PSSCH bandwidth refers to the bandwidth of the PSCCH or the PSSCH corresponding to this feedback information, and means that the frequency domain range within the resource with the smallest number and the resource with the largest number is usable.

[0039] Considering that the probability of successful access of feedback information is relatively high at the successful access position of PSSCH / PSCCH, in one embodiment, the bandwidth occupied by the SL feedback resource is a PSCCH frequency domain subset or a PSSCH frequency domain subset.

[0040] A resource block (RB) set refers to a single listen before talk (LBT) bandwidth. Multiple RB sets refer to multiple LBT bandwidths, and may be wideband operation.

[0041] Here, the RB set is the minimum detection granularity defined in the unlicensed frequency band.

[0042] Optionally, the frequency domain resource granularity occupied by the SL feedback resource is One physical resource block (PRB) and M Physical Resource Blocks PRBs (M is a parameter that may be predefined or preconfigured or configured by a protocol); The size of the subchannel; Resource Block Group (RBG), It includes at least one of one resource element (RE) or multiple REs.

[0043] Here, one physical resource block (PRB) may be understood as an interlace structure.

[0044] For example, at a predefined frequency of 15 kHz, there are 10 interlaces, each of which occupies one PRB, and at a predefined frequency of 30 kHz, there are 5 interlaces, each of which occupies one PRB.

[0045] Alternatively, a total of two PRBs, one at the start RB and one at the end RB of the bandwidth, are used for transmission.

[0046] For M PRB(s), M is a parameter that is predefined or preconfigured or configured by the protocol, for example M=6 RBs.

[0047] Optionally, the RBG comprises: The size of the RBG is a parameter that is predefined or preconfigured or configured by a protocol; the number of RBGs is a parameter that is predefined or preconfigured or configured by the protocol; The number of RBGs is obtained based on the number of BWPs or RB sets; and the number of RBGs is obtained based on the BWP or the carrier bandwidth of the RB set.

[0048] Optionally, the resource element RE or REs may further comprise: The density of REs is related to the subcarrier space (SCS); The interval between REs is related to the SCS; The number of interlaces is predefined or preconfigured by the protocol, For example, when SCS=15kHz, there are 10*12 interlaces, and the minimum scheduling unit of each interlace is one RE. The number of REs in one or more resource blocks is one or more, and the number of RE(s) in the one or more resource blocks is a value that is predefined or preconfigured or configured by a protocol.

[0049] Optionally, the frequency domain resource spacing of the SL feedback resource is the interval between two adjacent frequency domain resource granularities or the interval GAP between two adjacent frequency domain resource granularities; being parameters that are predefined or preconfigured or configured or dictated by the protocol; The unit of the frequency domain resource interval satisfies at least one of the following: a PRB, M PRBs, a size of a subchannel, an RBG, one RE, or a plurality of REs.

[0050] Optionally, the location of the frequency domain resource of the SL feedback resource, or the size of the frequency domain resource, or the interlace index or the number of interlaces, a parameter that is predefined or preconfigured or configured by a protocol and / or is indicated by at least one of the MAC CE, the DCI, and the SCI; The value is related to the SCS.

[0051] Optionally, at least one of the frequency domain resource location, frequency domain resource size, interlace index, and interlace number of the SL feedback resource is: Determining at least one of a frequency domain resource location, a frequency domain resource size, an interlace index, and an interlace number of the SL feedback resource according to a slot number / slot number; Determining at least one of a frequency domain resource location, a frequency domain resource size, an interlace index, and an interlace number of the SL feedback resource according to a terminal identifier UE ID; At least one of the frequency domain resource location, frequency domain resource size, interlace index, and number of interlaces of the SL feedback resource is a value determined by a predefined or preconfigured rule, and / or is a parameter indicated by at least one of a media access control unit (MAC CE), downlink control information (DCI), and sidelink control information (SCI); At least one of the frequency domain resource location, frequency domain resource size, interlace index, and interlace number of the SL feedback resource is a parameter randomly selected within a preconfigured range.

[0052] For example, the gNB configures multiple available interlace indexes for the RX UE via RRC, and optionally further indicates via DCI the interlace index to be used by the RX UE to transmit the PSFCH.

[0053] Optionally, the slot number / number of slots is S_num mod(I_num)=A is satisfied, where S_num is the slot number / number of slots, where A is a pre-configured value or a value obtained based on the UE ID; Here, I_num is a value that is predefined or preconfigured or configured by the protocol, or I_num relates to the number of interlaces.

[0054] For example, I_num=interlace number, or the interlace number is an integer multiple of I_num, or I_num is an integer multiple of the interlace number. For the second relationship, PSFCHs corresponding to multiple interlaces can be transmitted in one candidate slot correspondingly.

[0055] Optionally, the UE ID is: The ID of the first terminal; The ID of the feedback information receiving device; The ID of the transmitting terminal of the PSCCH and / or PSSCH corresponding to the feedback information; and the ID of the scheduling terminal.

[0056] In some alternative embodiments, when the SL feedback resource is a centralized resource, determining the sidelink SL feedback resource comprises: determining a bandwidth occupied by the SL feedback resource; determining a frequency domain resource granularity occupied by the SL feedback resource; determining a frequency domain resource location and / or a frequency domain resource size of the SL feedback resource.

[0057] Here, the location of the frequency domain resource includes a start location of the frequency domain resource and / or an end location of the frequency domain resource.

[0058] Here, the bandwidth occupied by the SL feedback resource and the frequency domain resource granularity occupied by the SL feedback resource can be understood by referring to the above embodiment, and will not be described further here.

[0059] Optionally, the determining of the frequency domain resource location and / or frequency domain resource size of the SL feedback resource may include: Determining a frequency domain resource location and / or a frequency domain resource size of the SL feedback resource according to a slot number / number of slots; Determining a frequency domain resource location and / or a frequency domain resource size of the SL feedback resource based on a UE ID; The location of the frequency domain resource and / or the size of the frequency domain resource of the SL feedback resource are parameters determined by a predefined or preconfigured rule, and / or parameters indicated by at least one of a MAC CE, a DCI, and a SCI; The location of the frequency domain resource and / or the size of the frequency domain resource of the SL feedback resource are parameters selected randomly within a preconfigured range.

[0060] Wherein, the location of the frequency domain resource of the SL feedback resource is a parameter randomly selected within a preconfigured range. A starting position of a frequency domain resource is randomly selected within a preconfigured range; A length of the frequency domain resource is randomly selected within a preconfigured range; and the end location of the frequency domain resource is randomly selected within a preconfigured range.

[0061] Optionally, the slot number / number of slots is S_num mod(I_num)=A is satisfied, where S_num is the slot number / number of slots, where A is a pre-configured value or a value obtained based on the UE ID; Here, I_num is a value that is predefined or preconfigured or configured by the protocol, or I_num relates to the number of interlaces.

[0062] Optionally, the UE ID is: The ID of the first terminal; The ID of the feedback information receiving device; The ID of the transmitting terminal of the PSCCH and / or PSSCH corresponding to the feedback information; and the ID of the scheduling terminal.

[0063] In some further alternative embodiments, the SL feedback resource is determined based on a resource allocation or a resource structure of a physical sidelink control channel PSCCH and / or a physical sidelink shared channel PSSCH, The resource allocation scheme of the SL feedback resource is the same as the resource allocation scheme of the PSCCH and / or PSSCH; The resource structure of the SL feedback resource is the same as the resource structure of the PSCCH and / or PSSCH; When the PSCCH and / or PSSCH resource is a centralized resource, the SL feedback resource is a centralized resource or a distributed resource, and whether the SL feedback resource is a centralized resource or a distributed resource is determined by being pre-configured, configured, or indicated.

[0064] In one embodiment, when the resource allocation scheme adopted by PSCCH / PSSCH is distributed resource allocation, the SL feedback resource adopts distributed resource allocation; or when the resource adopted by PSCCH / PSSCH is distributed resource, the SL feedback resource adopts distributed resource.

[0065] In one embodiment, when the resource allocation scheme adopted by PSCCH / PSSCH is centralized resource allocation, the SL feedback resource adopts centralized resource allocation; or when the resource adopted by PSCCH / PSSCH is centralized resource, the SL feedback resource adopts centralized resource.

[0066] Alternatively, if the PSSCH / PSCCH is a continuous resource allocation, ie, a centralized resource allocation, the SL feedback resource is the same as the frequency domain range of the PSSCH / PSCCH.

[0067] Alternatively, if the PSSCH / PSCCH is an interlaced based resource allocation, ie, a distributed resource allocation, the SL feedback resource is the same as the frequency domain range of the PSSCH / PSCCH.

[0068] Alternatively, if the PSSCH / PSCCH is an interlaced based resource allocation, the SL feedback resource is within the frequency domain range of the PSSCH / PSCCH.

[0069] In one embodiment, when the PSCCH and / or PSSCH resources are centralized resources, the SL feedback resource may be a centralized resource or a distributed resource. Optionally, whether the SL feedback resource is a centralized resource or a distributed resource is determined by pre-configuration, configuration or indication, where the indication may be a MAC CE indication, and / or a DCI indication, and / or an SCI indication.

[0070] In an embodiment of the present application, a sidelink SL feedback resource is determined, and the SL feedback resource is used by the first terminal to transmit feedback information, and the feedback resource is determined by the terminal and may be a distributed resource or a centralized resource, or the allocation of the feedback resource is determined based on a resource allocation scheme of PSCCH and / or PSSCH, so as to improve the probability of terminal channel access, thereby transmitting the feedback information on a non-licensed frequency band, and improving system efficiency.

[0071] In some alternative embodiments, the sequence of feedback information comprises: The feedback information is transmitted in a sequence having a sequence length of N; the feedback information receiving device detects the feedback information based on a predefined or preconfigured sequence length; Here, the value of N is: being a predefined or preconfigured value; Related to the composition of the SCS and and related to available resources.

[0072] The resource of feedback information is embodied by a sequence of feedback information.

[0073] In one embodiment, the feedback information is transmitted in a sequence with a sequence length of N, where the value of N is related to the configuration of the SCS, for example, 15 kHz corresponds to N1, and 30 kHz corresponds to N2. In the interlaced based resource allocation, the PSFCH information defined by N1 or N2 can cover a part (10 PRBs / 5 PRBs) of the frequency domain resources, and the capacity of the PSFCH information can be expanded.

[0074] In one embodiment, the feedback information is transmitted in a sequence with a length of N, where the length of N is related to the available resources. In such a case, the length of the sequence is first matched with the variable frequency domain resources to generate the sequence. For example, for a resource with 10 interlaced PRBs, the length of the sequence is length N1=10*m, and for a resource with 11 interlaced PRBs, the construction length is N2=11*m. Here, the sequence 10*m to (11*m-1) overlaps with 9*m to (10*m-1).

[0075] In one embodiment, the feedback information receiving end device detects the feedback information based on a predefined or preconfigured sequence length. For example, if the feedback information sequence length is 11*m and the predefined detection sequence length is 10*m, the feedback information receiving end detects the sequence based on 10*m. In this method, the sequence generation at the transmitting end and the sequence detection at the receiving end need to be defined respectively.

[0076] In an embodiment of the present application, a sidelink SL feedback resource is determined, and the SL feedback resource is used by the first terminal to transmit feedback information, and the SL feedback resource is determined according to a sequence of feedback information, which can improve the probability of terminal channel access, thereby transmitting the feedback information on a non-licensed frequency band, and improving system efficiency.

[0077] In some alternative embodiments, the resource mapping of the feedback information satisfies at least one of the following: The feedback information sequence is mapped from the lowest PRB of the frequency domain resources; The feedback information sequence is mapped from the highest PRB of the frequency domain resources; The feedback information sequence is a repetition of the feedback information sequence on each PRB; The feedback information sequence is related to an interlace index.

[0078] In one embodiment, the feedback information sequence is mapped from the lowest PRB of the frequency domain resources. Optionally, if the sequence is mapped to PRBs 1 to PRB n and there are N PRBs left in the frequency domain resources, the sequence within the remaining frequency domain resources is a repetition of the sequence of the previous n PRBs. Here, N may be greater than, equal to, or less than n. When N > n, the multiple repetitions of the sequence of the previous n PRBs may be complete repetitions or partial repetitions. When N < n, it is a partial repetition of the sequence of the previous n PRBs. When N = n, it is a repetition of the sequence of the previous n PRBs.

[0079] In one embodiment, based on the situation that the PSFCH occupies one PRB and the remaining PRBs are repetitions, the feedback information sequence is a repetition of the feedback information sequence on each PRB.

[0080] In one embodiment, the resource mapping of the feedback information is related to the interlace index, for example, in 15 kHz, interlace 0-5 corresponds to 11 PRBs, interlace 6-9 corresponds to 10 PRBs, and the predefined PSFCH length N1 maps to interlace 0-5, and the last PRB is a repeat mapping of the 10th PRB.

[0081] In an embodiment of the present application, by determining a sidelink SL feedback resource and determining a mapping of a feedback information sequence, the probability of terminal channel access can be improved, thereby transmitting feedback information on a non-licensed frequency band and improving system efficiency.

[0082] The following further illustrates the method for determining sidelink feedback resource according to the embodiments of the present application with some examples.

[0083] 3 is a schematic diagram of PSFCH being a centralized resource according to an embodiment of the present application. As shown in FIG. 3, PSFCH is a continuous resource allocation, in FIG. 3, in 20 MHz, 30 kHz, PSFCH starts from the 4th PRB and occupies 45 PRBs.

[0084] 4 is a schematic diagram of a PSFCH being a distributed resource according to an embodiment of the present application. As shown in FIG 4, the PSFCH is an interlaced based resource allocation, and in FIG 4, under 20 MHz and 30 kHz, the PSFCH adopts interlace 0 to transmit information.

[0085] 5 is a schematic diagram of an embodiment of the present application in which the PSFCH adopts the same frequency domain resource as the PSSCH. As shown in FIG. 5, when the PSSCH / PSCCH is a continuous resource allocation, the PSFCH has the same frequency domain range as the PSSCH / PSCCH.

[0086] 6 is a schematic diagram of the second embodiment of the present application in which the PSFCH adopts the same frequency domain resource as the PSSCH. As shown in FIG. 6, when the PSSCH / PSCCH is an interlaced based resource allocation, the PSFCH has the same frequency domain range as the PSSCH / PSCCH.

[0087] Figure 7 is a schematic diagram of the PSFCH available resource according to an embodiment of the present application being a part / all of the PSSCH / PSCCH resources. When the PSSCH is an interlaced based resource allocation, the PSFCH available frequency domain resource is within the frequency domain resource range of the PSSCH. As shown in Figure 7, the PSSCH / PSCCH occupies interlace 0 and interlace 1, and the PSFCH occupies interlace 0 for transmission.

[0088] FIG. 8 is a schematic diagram of a frequency domain resource interval of a SL feedback resource according to an embodiment of the present application.

[0089] When the frequency domain resource interval is a GAP between two adjacent frequency domain resource granularities, if the frequency domain resource interval is defined as 3 PRBs and the scheduling granularity is defined as 2 PRBs, the resource occupancy situation in the frequency domain of the PSFCH is shown in FIG. 8.

[0090] When the frequency domain resource interval is the interval between two adjacent frequency domain resource granularities, if the frequency domain resource interval is defined as 5 PRBs and the scheduling granularity is defined as 2 PRBs, the resource occupancy status in the frequency domain of the PSFCH is shown in FIG. 8.

[0091] Defining a GAP between frequency domains is advantageous in controlling / reducing IBE.

[0092] FIG. 9 is a second schematic diagram of frequency domain resource spacing of SL feedback resources according to an embodiment of the present application.

[0093] When the frequency domain resource interval is a GAP between two adjacent frequency domain resource granularities, if the frequency domain resource interval is defined as 49 PRBs, when two PRBs are scheduled, the resource occupancy situation in the frequency domain of the PSFCH is shown in FIG. 9.

[0094] When a frequency domain resource interval is the interval between two adjacent frequency domain resource granularities, if the frequency domain resource interval is defined as 50 PRBs, when two PRBs are scheduled, the resource occupancy situation in the frequency domain of the PSFCH is shown in FIG. 9.

[0095] FIG. 10 is a schematic diagram of a PSFCH structure defined based on RE according to an embodiment of the present application.

[0096] The PSFCH adopts a RE based interlace structure, where the PSFCH occupies one or more RE(s) in one PRB, and the RE may be contiguous or non-contiguous resource allocation. When occupying one RE in one PRB, the resource of the PSFCH is shown in Figure 10.

[0097] FIG. 11 is a second flowchart of a method for determining sidelink feedback resources according to an embodiment of the present application. As shown in FIG. 11, the method for determining sidelink feedback resources includes the following steps:

[0098] In step 1100, a feedback information receiving end device detects or receives feedback information on a sidelink SL feedback resource, where the SL feedback resource is used for a first terminal to transmit feedback information.

[0099] Optionally, the feedback information receiving end equipment may be a second terminal, a scheduling terminal or a network side equipment.

[0100] Here, the second terminal is a transmitting end device of the PSSCH or PSCCH, and a receiving end device of the feedback information.

[0101] Alternatively, the scheduling terminal may be a header terminal UE for controlling the transmission and reception of data of a pair of UEs.

[0102] Alternatively, the scheduling terminal may be a device that transmits the PSSCH and / or the PSCCH, or a device that controls a terminal / header terminal to transmit the PSSCH and / or the PSCCH, or a device that allows a terminal to transmit the PSSCH and / or the PSCCH.

[0103] Optionally, the feedback information receiving end device determines the sidelink SL feedback resource by at least one of being predefined, preconfigured, configured, and / or indicated by a protocol.

[0104] It should be explained that pre-configured means pre-configured by the network side equipment via RRC signaling or pre-configured by the terminal via RRC signaling, configured means configured by the network side equipment via RRC signaling or configured by the terminal via RRC signaling, and indicated means indicated by at least one of MAC CE, DCI and SCI, where the network side equipment indicates by MAC CE and / or DCI and the terminal indicates by MAC CE and / or SCI.

[0105] In an embodiment of the present application, the feedback information receiving end device detects or receives feedback information on a sidelink SL feedback resource, which improves the flexibility of resource scheduling and can improve the probability of terminal channel access, thereby transmitting feedback information on a non-licensed frequency band and improving system efficiency.

[0106] Optionally, the sidelink SL feedback resource comprises: The SL feedback resource is a distributed resource; The SL feedback resource is a centralized resource; the SL feedback resource is determined based on a resource allocation or a resource structure of a physical sidelink control channel PSCCH and / or a physical sidelink shared channel PSSCH.

[0107] Optionally, when the SL feedback resource is a distributed resource, the sidelink SL feedback resource comprises: A bandwidth occupied by the SL feedback resource; and a frequency domain resource granularity occupied by the SL feedback resource; and A frequency domain resource interval of the SL feedback resource; The SL feedback resource includes at least one of a frequency domain resource location, a frequency domain resource size, an interlace index, and an interlace number.

[0108] Alternatively, if the SL feedback resource is a centralized resource, the sidelink SL feedback resource may include: A bandwidth occupied by the SL feedback resource; and a frequency domain resource granularity occupied by the SL feedback resource; and and at least one of a frequency domain resource location and / or a frequency domain resource size of the SL feedback resource.

[0109] Optionally, the bandwidth occupied by the SL feedback resource is Fractional bandwidth BWP, one or more carrier bandwidths; The bandwidth of the PSCCH, The bandwidth of the PSSCH, a PSCCH frequency domain subset; a PSSCH frequency domain subset; and a frequency domain collection range of one or more resource block (RB) sets.

[0110] Optionally, the frequency domain resource granularity occupied by the SL feedback resource is One physical resource block (PRB); M Physical Resource Blocks PRBs (M is a parameter that may be predefined or preconfigured or configured by a protocol); The size of the subchannel; A resource block group RBG; It includes at least one of one resource element RE or multiple REs.

[0111] Optionally, the frequency domain resource spacing of the SL feedback resource is the interval between two adjacent frequency domain resource granularities or the interval GAP between two adjacent frequency domain resource granularities; being parameters that are predefined or preconfigured or configured or dictated by the protocol; The unit of the frequency domain resource interval satisfies at least one of the following: a PRB, M PRBs, a size of a subchannel, an RBG, one RE, or a plurality of REs.

[0112] Optionally, at least one of the frequency domain resource location, frequency domain resource size, interlace index, and interlace number of the SL feedback resource is: Determining at least one of a frequency domain resource location, a frequency domain resource size, an interlace index, and an interlace number of the SL feedback resource according to a slot number / slot number; Determining at least one of a frequency domain resource location, a frequency domain resource size, an interlace index, and an interlace number of the SL feedback resource according to a terminal identifier UE ID; At least one of the frequency domain resource location, frequency domain resource size, interlace index, and number of interlaces of the SL feedback resource is a value determined by a predefined or preconfigured rule, and / or is a parameter indicated by at least one of a media access control unit (MAC CE), downlink control information (DCI), and sidelink control information (SCI); At least one of the frequency domain resource position, frequency domain resource size, interlace index, and interlace number of the SL feedback resource is a parameter selected randomly within a preconfigured range.

[0113] Optionally, the frequency domain resource location and / or frequency domain resource size of the SL feedback resource may be: Determining a frequency domain resource location and / or a frequency domain resource size of the SL feedback resource according to a slot number / number of slots; Determining a frequency domain resource location and / or a frequency domain resource size of the SL feedback resource based on a UE ID; The location of the frequency domain resource and / or the size of the frequency domain resource of the SL feedback resource are parameters determined by a predefined or preconfigured rule, and / or parameters indicated by at least one of a MAC CE, a DCI, and a SCI; and wherein the location of the frequency domain resource and / or the size of the frequency domain resource of the SL feedback resource are parameters selected randomly within a preconfigured range.

[0114] Optionally, the RBG comprises: The size of one RBG is a parameter that is predefined or preconfigured or configured or indicated by a protocol; the number of RBGs is a parameter that is predefined or preconfigured or configured by the protocol; The number of RBGs is obtained based on the number of BWPs or RB sets; and the number of RBGs is obtained based on the BWP or the carrier bandwidth of the RB set.

[0115] Optionally, the resource element RE or REs may further comprise: The density of RE is related to the subcarrier spacing SCS, The interval between REs is related to the SCS; used to predefine or preconfigure or configure the number of interlaces by the protocol; The number of REs in one or more resource blocks is one or more, and the number of REs in the one or more resource blocks is a value that is predefined, preconfigured, or configured by a protocol.

[0116] Optionally, the slot number / number of slots is S_num mod(I_num)=A is satisfied, where S_num is the slot number / number of slots, where A is a pre-configured value or a value obtained based on the UE ID; Here, I_num is a value that is predefined or preconfigured or configured by the protocol, or I_num relates to the number of interlaces.

[0117] Optionally, the UE ID is: The ID of the first terminal; The ID of the feedback information receiving device; The ID of the transmitting terminal of the PSCCH and / or PSSCH corresponding to the feedback information; and the ID of the scheduling terminal.

[0118] Optionally, the SL feedback resource is determined based on a resource allocation or a resource structure of a physical sidelink control channel PSCCH and / or a physical sidelink shared channel PSSCH. The resource allocation scheme of the SL feedback resource is the same as the resource allocation scheme of the PSCCH and / or PSSCH; The resource structure of the SL feedback resource is the same as the resource structure of the PSCCH and / or PSSCH; When the PSCCH and / or PSSCH resource is a centralized resource, the SL feedback resource satisfies at least one of the following: the SL feedback resource is a centralized resource or a distributed resource, and whether the SL feedback resource is a centralized resource or a distributed resource is determined by being predefined, preconfigured, configured, or indicated.

[0119] In an embodiment of the present application, the feedback information receiving end device detects or receives feedback information on a sidelink SL feedback resource, which is used by the first terminal to transmit feedback information, and the SL feedback resource may be a distributed resource or a centralized resource, or may be determined based on a resource allocation or resource structure of a PSCCH and / or a PSSCH, which can improve the probability of terminal channel access, thereby transmitting feedback information on a non-authorized frequency band and improving system efficiency.

[0120] Optionally, the sequence of feedback information comprises: The feedback information is transmitted in a sequence having a sequence length of N; the feedback information receiving device detects the feedback information based on a predefined or preconfigured sequence length; Here, the value of N is: being a predefined or preconfigured value; Related to the composition of the SCS and and related to available resources.

[0121] Optionally, the resource mapping of the feedback information comprises: Mapping the feedback information sequence from the lowest PRB of the frequency domain resource; Mapping the feedback information sequence from the highest PRB of the frequency domain resource; the feedback information sequence being a repetition of the feedback information sequence on each PRB; and relating to the interlace index.

[0122] The structure of the SL feedback resource in the embodiment of the present application is the same for the feedback information receiving end and the first terminal, so please refer to the relevant description in the above embodiment, and no further description will be given here.

[0123] It should be noted that the execution body of the sidelink feedback resource determination method according to the embodiment of the present application may be a sidelink feedback resource determination device or a control module for executing the sidelink feedback resource determination method in the sidelink feedback resource determination device. In the embodiment of the present application, the sidelink feedback resource determination device according to the embodiment of the present application will be described by taking the sidelink feedback resource determination device executing the sidelink feedback resource determination method as an example.

[0124] 12 is a structural schematic diagram of a sidelink feedback resource determination device according to an embodiment of the present application. As shown in FIG. 12, the device includes: The first determining unit 1210 includes a first determining unit for determining a sidelink SL feedback resource, where the SL feedback resource is used for the first terminal to transmit feedback information.

[0125] In an embodiment of the present application, a sidelink SL feedback resource is determined, and the SL feedback resource is used by the first terminal to transmit feedback information, and the feedback resource is determined by the terminal, which improves the flexibility of resource scheduling and can improve the probability of terminal channel access, thereby transmitting feedback information on a non-licensed frequency band and improving system efficiency.

[0126] Optionally, the sidelink SL feedback resource comprises: The SL feedback resource is a distributed resource; The SL feedback resource is a centralized resource; the SL feedback resource is determined based on a resource allocation of a physical sidelink control channel PSCCH and / or a physical sidelink shared channel PSSCH.

[0127] Optionally, when the SL feedback resource is a distributed resource, the first determining unit: determining a bandwidth occupied by the SL feedback resource; determining a frequency domain resource granularity occupied by the SL feedback resource; determining a frequency domain resource interval of the SL feedback resource; The SL feedback resource may be used to perform at least one of determining a frequency domain resource location, a frequency domain resource size, an interlace index, and an interlace number of the SL feedback resource.

[0128] Optionally, when the SL feedback resource is a centralized resource, the first determining unit: determining a bandwidth occupied by the SL feedback resource; determining a frequency domain resource granularity occupied by the SL feedback resource; and determining a frequency domain resource location and / or a frequency domain resource size of the SL feedback resource.

[0129] Optionally, the bandwidth occupied by the SL feedback resource is Fractional bandwidth BWP, one or more carrier bandwidths; The bandwidth of the PSCCH, The bandwidth of the PSSCH, a PSCCH frequency domain subset; a PSSCH frequency domain subset; and a frequency domain collection range of one or more resource block (RB) sets.

[0130] Optionally, the frequency domain resource granularity occupied by the SL feedback resource is One physical resource block (PRB); M Physical Resource Blocks PRBs (M is a parameter that may be predefined or preconfigured or configured by a protocol); The size of the subchannel; A resource block group RBG; It includes at least one of one resource element RE or multiple REs.

[0131] Optionally, the frequency domain resource spacing of the SL feedback resource is the interval between two adjacent frequency domain resource granularities or the interval GAP between two adjacent frequency domain resource granularities; being parameters that are predefined or preconfigured or configured or dictated by the protocol; The unit of the frequency domain resource interval satisfies at least one of the following: a PRB, M PRBs, a size of a subchannel, an RBG, one RE, or a plurality of REs.

[0132] Optionally, at least one of the frequency domain resource location, frequency domain resource size, interlace index, and interlace number of the SL feedback resource is: Determining at least one of a frequency domain resource location, a frequency domain resource size, an interlace index, and an interlace number of the SL feedback resource according to a slot number / slot number; Determining at least one of a frequency domain resource location, a frequency domain resource size, an interlace index, and an interlace number of the SL feedback resource according to a terminal identifier UE ID; At least one of the frequency domain resource location, frequency domain resource size, interlace index, and number of interlaces of the SL feedback resource is a value determined by a predefined or preconfigured rule, and / or is a value indicated by a media access control unit (MAC CE), downlink control information (DCI), or sidelink control information (SCI); At least one of the frequency domain resource position, frequency domain resource size, interlace index, and interlace number of the SL feedback resource is a parameter selected randomly within a preconfigured range.

[0133] Optionally, the frequency domain resource location and / or frequency domain resource size of the SL feedback resource may be: Determining a frequency domain resource location and / or a frequency domain resource size of the SL feedback resource according to a slot number / number of slots; Determining a frequency domain resource location and / or a frequency domain resource size of the SL feedback resource based on a UE ID; The location of the frequency domain resource and / or the size of the frequency domain resource of the SL feedback resource is a value determined by a predefined or preconfigured rule, and / or a parameter indicated by at least one of a MAC CE, a DCI, and an SCI; and wherein the location of the frequency domain resource and / or the size of the frequency domain resource of the SL feedback resource are parameters selected randomly within a preconfigured range.

[0134] Optionally, the RBG comprises: The size of one RBG is a parameter that is predefined or preconfigured or configured by a protocol; the number of RBGs is a parameter that is predefined or preconfigured or configured by the protocol; The number of RBGs is obtained based on the number of BWPs or RB sets; and the number of RBGs is obtained based on the BWP or the carrier bandwidth of the RB set.

[0135] Optionally, the resource element RE or REs may further comprise: The density of RE is related to the subcarrier spacing SCS, The interval between REs is related to the SCS; used to predefine or preconfigure or configure the number of interlaces by the protocol; The number of REs in one or more resource blocks is one or more, and the number of REs in the one or more resource blocks is a value that is predefined, preconfigured, or configured by a protocol.

[0136] Optionally, the slot number / number of slots is S_num mod(I_num)=A is satisfied, where S_num is the slot number / number of slots, where A is a pre-configured value or a value obtained based on the UE ID; Here, I_num is a value that is predefined or preconfigured or configured by the protocol, or I_num relates to the number of interlaces.

[0137] Optionally, the UE ID is: The ID of the first terminal; The ID of the feedback information receiving device; The ID of the transmitting terminal of the PSCCH and / or PSSCH corresponding to the feedback information; and the ID of the scheduling terminal.

[0138] Optionally, the SL feedback resource is determined based on a resource allocation of a physical sidelink control channel PSCCH and / or a physical sidelink shared channel PSSCH, The resource allocation scheme of the SL feedback resource is the same as the resource allocation scheme of the PSCCH and / or PSSCH; When the PSCCH and / or PSSCH resource is a centralized resource, the SL feedback resource satisfies at least one of the following: the SL feedback resource is a centralized resource or a distributed resource, and whether the SL feedback resource is a centralized resource or a distributed resource is determined by being pre-configured, configured, or indicated.

[0139] Optionally, the sequence of feedback information comprises: The feedback information is transmitted in a sequence having a sequence length of N; the feedback information receiving device detects the feedback information based on a predefined or preconfigured sequence length; Here, the value of N is: being a predefined or preconfigured value; Related to the composition of the SCS and and related to available resources.

[0140] Optionally, the resource mapping of the feedback information comprises: Mapping the feedback information sequence from the lowest PRB of the frequency domain resource; Mapping the feedback information sequence from the highest PRB of the frequency domain resource; the feedback information sequence being a repetition of the feedback information sequence on each PRB; and relating to the interlace index.

[0141] In an embodiment of the present application, a sidelink SL feedback resource is determined, and the SL feedback resource is used by the first terminal to transmit feedback information, and the feedback resource is determined by the terminal and may be a distributed resource or a centralized resource, or the allocation of the feedback resource is determined based on a resource allocation scheme of PSCCH and / or PSSCH, so as to improve the probability of terminal channel access, thereby transmitting the feedback information on a non-licensed frequency band, and improving system efficiency.

[0142] The sidelink feedback resource determination device in the embodiment of the present application may be a device, a device having an operating system, or an electronic device, and may be a component in a terminal, an integrated circuit, or a chip. The device or electronic device may be a mobile terminal or a non-mobile terminal. Exemplarily, the mobile terminal may include, but is not limited to, the types of terminals 11 listed above, and the non-mobile terminal may be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a deposit payment machine or a self-service machine, etc., and the embodiment of the present application is not specifically limited thereto.

[0143] The sidelink feedback resource determination device according to the embodiments of the present application can realize each process realized by the method embodiments of Figures 2 to 10 and achieve the same technical effects, and will not be further described here to avoid repetition.

[0144] 13 is a second structural schematic diagram of a device for determining sidelink feedback resource according to an embodiment of the present application. As shown in FIG. 13, the device includes: The terminal includes a first processing unit 1310 for detecting or receiving feedback information on a sidelink SL feedback resource, where the SL feedback resource is used for the first terminal to transmit feedback information.

[0145] Optionally, the sidelink SL feedback resource comprises: The SL feedback resource is a distributed resource; The SL feedback resource is a centralized resource; the SL feedback resource is determined based on a resource allocation or a resource structure of a physical sidelink control channel PSCCH and / or a physical sidelink shared channel PSSCH.

[0146] Optionally, when the SL feedback resource is a distributed resource, the sidelink SL feedback resource comprises: A bandwidth occupied by the SL feedback resource; and a frequency domain resource granularity occupied by the SL feedback resource; and A frequency domain resource interval of the SL feedback resource; The SL feedback resource includes at least one of a frequency domain resource location, a frequency domain resource size, an interlace index, and an interlace number.

[0147] Alternatively, if the SL feedback resource is a centralized resource, the sidelink SL feedback resource may include: A bandwidth occupied by the SL feedback resource; and a frequency domain resource granularity occupied by the SL feedback resource; and and at least one of a frequency domain resource location and / or a frequency domain resource size of the SL feedback resource.

[0148] Optionally, the bandwidth occupied by the SL feedback resource is Fractional bandwidth BWP, one or more carrier bandwidths; The bandwidth of the PSCCH, The bandwidth of the PSSCH, a PSCCH frequency domain subset; a PSSCH frequency domain subset; and a frequency domain collection range of one or more resource block (RB) sets.

[0149] Optionally, the frequency domain resource granularity occupied by the SL feedback resource is One physical resource block (PRB); M Physical Resource Blocks PRBs (M is a parameter that may be predefined or preconfigured or configured by a protocol); The size of the subchannel; A resource block group RBG; It includes at least one of one resource element RE or multiple REs.

[0150] Optionally, the frequency domain resource spacing of the SL feedback resource is the interval between two adjacent frequency domain resource granularities or the interval GAP between two adjacent frequency domain resource granularities; being parameters that are predefined or preconfigured or configured or dictated by the protocol; The unit of the frequency domain resource interval satisfies at least one of the following: a PRB, M PRBs, a size of a subchannel, an RBG, one RE, or a plurality of REs.

[0151] Optionally, at least one of the frequency domain resource location, frequency domain resource size, interlace index, and interlace number of the SL feedback resource is: Determining at least one of a frequency domain resource location, a frequency domain resource size, an interlace index, and an interlace number of the SL feedback resource according to a slot number / slot number; Determining at least one of a frequency domain resource location, a frequency domain resource size, an interlace index, and an interlace number of the SL feedback resource according to a terminal identifier UE ID; At least one of the frequency domain resource location, frequency domain resource size, interlace index, and number of interlaces of the SL feedback resource is a value determined by a predefined or preconfigured rule, and / or is a parameter indicated by at least one of a media access control unit (MAC CE), downlink control information (DCI), and sidelink control information (SCI); At least one of the frequency domain resource position, frequency domain resource size, interlace index, and interlace number of the SL feedback resource is a parameter selected randomly within a preconfigured range.

[0152] Optionally, the frequency domain resource location and / or frequency domain resource size of the SL feedback resource may be: Determining a frequency domain resource location and / or a frequency domain resource size of the SL feedback resource according to a slot number / number of slots; Determining a frequency domain resource location and / or a frequency domain resource size of the SL feedback resource based on a UE ID; The location of the frequency domain resource and / or the size of the frequency domain resource of the SL feedback resource are parameters determined by a predefined or preconfigured rule, and / or parameters indicated by at least one of a MAC CE, a DCI, and a SCI; and wherein the location of the frequency domain resource and / or the size of the frequency domain resource of the SL feedback resource are parameters selected randomly within a preconfigured range.

[0153] Optionally, the RBG comprises: The size of one RBG is a parameter that is predefined or preconfigured or configured or indicated by a protocol; the number of RBGs is a parameter that is predefined or preconfigured or configured by the protocol; The number of RBGs is obtained based on the number of BWPs or RB sets; and the number of RBGs is obtained based on the BWP or the carrier bandwidth of the RB set.

[0154] Optionally, the resource element RE or REs may further comprise: The density of RE is related to the subcarrier spacing SCS, The interval between REs is related to the SCS; used to predefine or preconfigure or configure the number of interlaces by the protocol; The number of REs in one or more resource blocks is one or more, and the number of REs in the one or more resource blocks is a value that is predefined, preconfigured, or configured by a protocol.

[0155] Optionally, the slot number / number of slots is S_num mod(I_num)=A is satisfied, where S_num is the slot number / number of slots, where A is a pre-configured value or a value obtained based on the UE ID; Here, I_num is a value that is predefined or preconfigured or configured by the protocol, or I_num relates to the number of interlaces.

[0156] Optionally, the UE ID is: The ID of the first terminal; The ID of the feedback information receiving device; The ID of the transmitting terminal of the PSCCH and / or PSSCH corresponding to the feedback information; and the ID of the scheduling terminal.

[0157] Optionally, the SL feedback resource is determined based on a resource allocation or a resource structure of a physical sidelink control channel PSCCH and / or a physical sidelink shared channel PSSCH. The resource allocation scheme of the SL feedback resource is the same as the resource allocation scheme of the PSCCH and / or PSSCH; The resource structure of the SL feedback resource is the same as the resource structure of the PSCCH and / or PSSCH; When the PSCCH and / or PSSCH resource is a centralized resource, the SL feedback resource satisfies at least one of the following: the SL feedback resource is a centralized resource or a distributed resource, and whether the SL feedback resource is a centralized resource or a distributed resource is determined by being predefined, preconfigured, configured, or indicated.

[0158] Optionally, the sequence of feedback information comprises: The feedback information is transmitted in a sequence having a sequence length of N; the feedback information receiving device detects the feedback information based on a predefined or preconfigured sequence length; Here, the value of N is: being a predefined or preconfigured value; Related to the composition of the SCS and and related to available resources.

[0159] Optionally, the resource mapping of the feedback information comprises: Mapping the feedback information sequence from the lowest PRB of the frequency domain resource; Mapping the feedback information sequence from the highest PRB of the frequency domain resource; the feedback information sequence being a repetition of the feedback information sequence on each PRB; and relating to the interlace index.

[0160] In an embodiment of the present application, feedback information is detected or received on a sidelink SL feedback resource, and the SL feedback resource is used by the first terminal to transmit feedback information, which can improve the flexibility of resource scheduling, improve the probability of terminal channel access, and improve system efficiency.

[0161] Optionally, as shown in Fig. 14, an embodiment of the present application further provides a communication device 1400, including a processor 1401, a memory 1402, and a program or instruction stored in the memory 1402 and operable on the processor 1401, for example, when the communication device 1400 is a terminal, when the program or instruction is executed by the processor 1401, each process of the embodiment of the method for determining sidelink feedback resource can be realized and the same technical effect can be achieved. In order to avoid repetition, no further description will be given here.

[0162] The embodiment of the present application further provides a terminal, including a processor and a communication interface, the processor is used for determining a sidelink SL feedback resource, and the SL feedback resource is used for a first terminal to send feedback information. The embodiment of the terminal corresponds to the embodiment of the terminal-side method described above, and the implementation processes and realization manners of the embodiment of the method can be applied to the embodiment of the terminal, and the same technical effects can be achieved. Specifically, FIG. 15 is a schematic diagram of a hardware structure for realizing the terminal of the embodiment of the present application.

[0163] The terminal 1500 includes at least some of the following components, but is not limited to: a radio frequency unit 1501, a network module 1502, an audio output unit 1503, an input unit 1504, a sensor 1505, a display unit 1506, a user input unit 1507, an interface unit 1508, a memory 1509, and a processor 1510.

[0164] As can be understood by those skilled in the art, the terminal 1500 may further include a power source (e.g., a battery) for powering each component, and the power source may be logically connected to the processor 1510 by a power management system, so that the power management system can realize functions such as charge / discharge management and power consumption management. The terminal structure shown in FIG. 15 does not constitute a limitation on the terminal, and the terminal may include more or less components than the number of components shown, or a combination of some components, or a different arrangement of components, and will not be further described here.

[0165] It should be understood that in the embodiment of the present application, the input unit 1504 may include a graphics processor (Graphics Processing Unit, GPU) 15041 and a microphone 15042, and the graphics processor 15041 processes image data of still or video images obtained by an image capture device (e.g., a camera) in a video capture mode or an image capture mode. The display unit 1506 may include a display panel 15061, and the display panel 15061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1507 includes a touch panel 15071 and other input devices 15072. The touch panel 15071 is also called a touch screen. The touch panel 15071 may include two parts: a touch detection device and a touch controller. The other input devices 15072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control buttons, switch buttons, etc.), a trackball, a mouse, and an operation lever, which will not be described further herein.

[0166] In the embodiment of the present application, the radio frequency unit 1501 receives downlink data from the network side device, and then causes the processor 1510 to process the data, and transmits uplink data to the network side device. In general, the radio frequency unit 1501 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0167] The memory 1509 may be used to store software programs or instructions and various data. The memory 1509 may mainly include a program or instruction storage area and a data storage area, where the program or instruction storage area can store an operating system, an application program or instruction required for at least one function (e.g., a sound playback function, an image playback function, etc.), etc. The memory 1509 may include a high-speed random access memory or a non-volatile memory, where the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. For example, the memory 1509 may be at least one magnetic disk memory device, a flash memory device, or other non-volatile solid-state memory device.

[0168] The processor 1510 may include one or more processing units. Optionally, the processor 1510 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, and application programs or instructions, and the modem processor mainly processes wireless communication, such as a baseband processor. As can be understood, the modem processor does not have to be integrated into the processor 1510.

[0169] Here, the processor 1510 is used to determine a sidelink SL feedback resource, which is used by the first terminal to transmit feedback information.

[0170] In an embodiment of the present application, a sidelink SL feedback resource is determined, and the SL feedback resource is used by the first terminal to transmit feedback information, and the feedback resource is determined by the terminal, which improves the flexibility of resource scheduling and can improve the probability of terminal channel access, thereby transmitting feedback information on a non-licensed frequency band and improving system efficiency.

[0171] Optionally, the sidelink SL feedback resource comprises: The SL feedback resource is a distributed resource; The SL feedback resource is a centralized resource; the SL feedback resource is determined based on a resource allocation of a physical sidelink control channel PSCCH and / or a physical sidelink shared channel PSSCH.

[0172] Optionally, the processor 1510 may further determining a bandwidth occupied by the SL feedback resource; determining a frequency domain resource granularity occupied by the SL feedback resource; determining a frequency domain resource interval of the SL feedback resource; The SL feedback resource may be used to perform at least one of determining a frequency domain resource location, a frequency domain resource size, an interlace index, and an interlace number of the SL feedback resource.

[0173] Optionally, the processor 1510 may further determining a bandwidth occupied by the SL feedback resource; determining a frequency domain resource granularity occupied by the SL feedback resource; and determining a frequency domain resource location and / or a frequency domain resource size of the SL feedback resource.

[0174] Optionally, the bandwidth occupied by the SL feedback resource is Fractional bandwidth BWP, one or more carrier bandwidths; The bandwidth of the PSCCH, The bandwidth of the PSSCH, a PSCCH frequency domain subset; a PSSCH frequency domain subset; and a frequency domain collection range of one or more resource block (RB) sets.

[0175] Optionally, the frequency domain resource granularity occupied by the SL feedback resource is One physical resource block (PRB); M Physical Resource Blocks PRBs (M is a parameter that may be predefined or preconfigured or configured by a protocol); The size of the subchannel; A resource block group RBG; It includes at least one of one resource element RE or multiple REs.

[0176] Optionally, the frequency domain resource spacing of the SL feedback resource is the interval between two adjacent frequency domain resource granularities or the interval GAP between two adjacent frequency domain resource granularities; being parameters that are predefined or preconfigured or configured or dictated by the protocol; The unit of the frequency domain resource interval satisfies at least one of the following: a PRB, M PRBs, a size of a subchannel, an RBG, one RE, or a plurality of REs.

[0177] Optionally, at least one of the frequency domain resource location, frequency domain resource size, interlace index, and interlace number of the SL feedback resource is: Determining at least one of a frequency domain resource location, a frequency domain resource size, an interlace index, and an interlace number of the SL feedback resource according to a slot number / slot number; Determining at least one of a frequency domain resource location, a frequency domain resource size, an interlace index, and an interlace number of the SL feedback resource according to a terminal identifier UE ID; At least one of the frequency domain resource location, frequency domain resource size, interlace index, and number of interlaces of the SL feedback resource is a value determined by a predefined or preconfigured rule, and / or is a value indicated by a media access control unit (MAC CE), downlink control information (DCI), or sidelink control information (SCI); At least one of the frequency domain resource position, frequency domain resource size, interlace index, and interlace number of the SL feedback resource is a parameter selected randomly within a preconfigured range.

[0178] Optionally, the frequency domain resource location and / or frequency domain resource size of the SL feedback resource may be: Determining a frequency domain resource location and / or a frequency domain resource size of the SL feedback resource according to a slot number / number of slots; Determining a frequency domain resource location and / or a frequency domain resource size of the SL feedback resource based on a UE ID; The location of the frequency domain resource and / or the size of the frequency domain resource of the SL feedback resource is a value determined by a predefined or preconfigured rule, and / or a parameter indicated by at least one of a MAC CE, a DCI, and an SCI; and wherein the location of the frequency domain resource and / or the size of the frequency domain resource of the SL feedback resource are parameters selected randomly within a preconfigured range.

[0179] Optionally, the RBG comprises: The size of one RBG is a parameter that is predefined or preconfigured or configured by a protocol; the number of RBGs is a parameter that is predefined or preconfigured or configured by the protocol; The number of RBGs is obtained based on the number of BWPs or RB sets; and the number of RBGs is obtained based on the BWP or the carrier bandwidth of the RB set.

[0180] Optionally, the resource element RE or REs may further comprise: The density of RE is related to the subcarrier spacing SCS, The interval between REs is related to the SCS; used to predefine or preconfigure or configure the number of interlaces by the protocol; The number of REs in one or more resource blocks is one or more, and the number of REs in the one or more resource blocks is a value that is predefined, preconfigured, or configured by a protocol.

[0181] Optionally, the slot number / number of slots is S_num mod(I_num)=A is satisfied, where S_num is the slot number / number of slots, where A is a pre-configured value or a value obtained based on the UE ID; Here, I_num is a value that is predefined or preconfigured or configured by the protocol, or I_num relates to the number of interlaces.

[0182] Optionally, the UE ID is: The ID of the first terminal; The ID of the feedback information receiving device; The ID of the transmitting terminal of the PSCCH and / or PSSCH corresponding to the feedback information; and the ID of the scheduling terminal.

[0183] Optionally, the SL feedback resource is determined based on a resource allocation of a physical sidelink control channel PSCCH and / or a physical sidelink shared channel PSSCH, The resource allocation scheme of the SL feedback resource is the same as the resource allocation scheme of the PSCCH and / or PSSCH; When the PSCCH and / or PSSCH resource is a centralized resource, the SL feedback resource satisfies at least one of the following: the SL feedback resource is a centralized resource or a distributed resource, and whether the SL feedback resource is a centralized resource or a distributed resource is determined by being pre-configured, configured, or indicated.

[0184] Optionally, the sequence of feedback information comprises: The feedback information is transmitted in a sequence having a sequence length of N; the feedback information receiving device detects the feedback information based on a predefined or preconfigured sequence length; Here, the value of N is: being a predefined or preconfigured value; Related to the composition of the SCS and and related to available resources.

[0185] Optionally, the resource mapping of the feedback information comprises: Mapping the feedback information sequence from the lowest PRB of the frequency domain resource; Mapping the feedback information sequence from the highest PRB of the frequency domain resource; the feedback information sequence being a repetition of the feedback information sequence on each PRB; and relating to the interlace index.

[0186] In an embodiment of the present application, a sidelink SL feedback resource is determined, and the SL feedback resource is used by the first terminal to transmit feedback information, and the feedback resource is determined by the terminal and may be a distributed resource or a centralized resource, or the allocation of the feedback resource is determined based on a resource allocation scheme of PSCCH and / or PSSCH, so as to improve the probability of terminal channel access, thereby transmitting the feedback information on a non-licensed frequency band, and improving system efficiency.

[0187] In another optional embodiment, the processor 1510 is used to detect or receive feedback information on a sidelink SL feedback resource, where the SL feedback resource is used by the first terminal to transmit the feedback information.

[0188] Optionally, the sidelink SL feedback resource comprises: The SL feedback resource is a distributed resource; The SL feedback resource is a centralized resource; the SL feedback resource is determined based on a resource allocation or a resource structure of a physical sidelink control channel PSCCH and / or a physical sidelink shared channel PSSCH.

[0189] Optionally, when the SL feedback resource is a distributed resource, the sidelink SL feedback resource comprises: A bandwidth occupied by the SL feedback resource; and a frequency domain resource granularity occupied by the SL feedback resource; and A frequency domain resource interval of the SL feedback resource; The SL feedback resource includes at least one of a frequency domain resource location, a frequency domain resource size, an interlace index, and an interlace number.

[0190] Alternatively, if the SL feedback resource is a centralized resource, the sidelink SL feedback resource may include: A bandwidth occupied by the SL feedback resource; and a frequency domain resource granularity occupied by the SL feedback resource; and and at least one of a frequency domain resource location and / or a frequency domain resource size of the SL feedback resource.

[0191] Optionally, the bandwidth occupied by the SL feedback resource is Fractional bandwidth BWP, one or more carrier bandwidths; The bandwidth of the PSCCH, The bandwidth of the PSSCH, a PSCCH frequency domain subset; a PSSCH frequency domain subset; and a frequency domain collection range of one or more resource block (RB) sets.

[0192] Optionally, the frequency domain resource granularity occupied by the SL feedback resource is One physical resource block (PRB); M Physical Resource Blocks PRBs (M is a parameter that may be predefined or preconfigured or configured by a protocol); The size of the subchannel; A resource block group RBG; It includes at least one of one resource element RE or multiple REs.

[0193] Optionally, the frequency domain resource spacing of the SL feedback resource is the interval between two adjacent frequency domain resource granularities or the interval GAP between two adjacent frequency domain resource granularities; being parameters that are predefined or preconfigured or configured or dictated by the protocol; The unit of the frequency domain resource interval satisfies at least one of the following: a PRB, M PRBs, a size of a subchannel, an RBG, one RE, or a plurality of REs.

[0194] Optionally, at least one of the frequency domain resource location, frequency domain resource size, interlace index, and interlace number of the SL feedback resource is: Determining at least one of a frequency domain resource location, a frequency domain resource size, an interlace index, and an interlace number of the SL feedback resource according to a slot number / slot number; Determining at least one of a frequency domain resource location, a frequency domain resource size, an interlace index, and an interlace number of the SL feedback resource according to a terminal identifier UE ID; At least one of the frequency domain resource location, frequency domain resource size, interlace index, and number of interlaces of the SL feedback resource is a value determined by a predefined or preconfigured rule, and / or is a parameter indicated by at least one of a media access control unit (MAC CE), downlink control information (DCI), and sidelink control information (SCI); At least one of the frequency domain resource position, frequency domain resource size, interlace index, and interlace number of the SL feedback resource is a parameter selected randomly within a preconfigured range.

[0195] Optionally, the frequency domain resource location and / or frequency domain resource size of the SL feedback resource may be: Determining a frequency domain resource location and / or a frequency domain resource size of the SL feedback resource according to a slot number / number of slots; Determining a frequency domain resource location and / or a frequency domain resource size of the SL feedback resource based on a UE ID; The location of the frequency domain resource and / or the size of the frequency domain resource of the SL feedback resource are parameters determined by a predefined or preconfigured rule, and / or parameters indicated by at least one of a MAC CE, a DCI, and a SCI; and wherein the location of the frequency domain resource and / or the size of the frequency domain resource of the SL feedback resource are parameters selected randomly within a preconfigured range.

[0196] Optionally, the RBG comprises: The size of one RBG is a parameter that is predefined or preconfigured or configured or indicated by a protocol; the number of RBGs is a parameter that is predefined or preconfigured or configured by the protocol; The number of RBGs is obtained based on the number of BWPs or RB sets; and the number of RBGs is obtained based on the BWP or the carrier bandwidth of the RB set.

[0197] Optionally, the resource element RE or REs may further comprise: The density of RE is related to the subcarrier spacing SCS, The interval between REs is related to the SCS; used to predefine or preconfigure or configure the number of interlaces by the protocol; The number of REs in one or more resource blocks is one or more, and the number of REs in the one or more resource blocks is a value that is predefined, preconfigured, or configured by a protocol.

[0198] Optionally, the slot number / number of slots is S_num mod(I_num)=A is satisfied, where S_num is the slot number / number of slots, where A is a pre-configured value or a value obtained based on the UE ID; Here, I_num is a value that is predefined or preconfigured or configured by the protocol, or I_num relates to the number of interlaces.

[0199] Optionally, the UE ID is: The ID of the first terminal; The ID of the feedback information receiving device; The ID of the transmitting terminal of the PSCCH and / or PSSCH corresponding to the feedback information; and the ID of the scheduling terminal.

[0200] Optionally, the SL feedback resource is determined based on a resource allocation or a resource structure of a physical sidelink control channel PSCCH and / or a physical sidelink shared channel PSSCH. The resource allocation scheme of the SL feedback resource is the same as the resource allocation scheme of the PSCCH and / or PSSCH; The resource structure of the SL feedback resource is the same as the resource structure of the PSCCH and / or PSSCH; When the PSCCH and / or PSSCH resource is a centralized resource, the SL feedback resource satisfies at least one of the following: the SL feedback resource is a centralized resource or a distributed resource, and whether the SL feedback resource is a centralized resource or a distributed resource is determined by being predefined, preconfigured, configured, or indicated.

[0201] Optionally, the sequence of feedback information comprises: The feedback information is transmitted in a sequence having a sequence length of N; the feedback information receiving device detects the feedback information based on a predefined or preconfigured sequence length; Here, the value of N is: being a predefined or preconfigured value; Related to the composition of the SCS and and related to available resources.

[0202] Optionally, the resource mapping of the feedback information comprises: Mapping the feedback information sequence from the lowest PRB of the frequency domain resource; Mapping the feedback information sequence from the highest PRB of the frequency domain resource; the feedback information sequence being a repetition of the feedback information sequence on each PRB; and relating to the interlace index.

[0203] In an embodiment of the present application, feedback information is detected or received on a sidelink SL feedback resource, and the SL feedback resource is used by the first terminal to transmit feedback information, which can improve the flexibility of resource scheduling, improve the probability of terminal channel access, and improve system efficiency.

[0204] An embodiment of the present application further provides a network side equipment, including a processor for detecting feedback information on a first resource and a communication interface, where the first resource is one or more resources on which a first terminal performs a channel access flow. This embodiment of the network side equipment corresponds to the embodiment of the above-mentioned network side equipment method, and each implementation process and realization manner of the above-mentioned method embodiment can be applied to this embodiment of the network side equipment, and the same technical effects can be achieved.

[0205] Specifically, an embodiment of the present application further provides a network side device. As shown in Fig. 16, the network side device 1600 includes an antenna 1601, a radio frequency device 1602, and a baseband device 1603. The antenna 1601 and the radio frequency device 1602 are connected. In the uplink direction, the radio frequency device 1602 receives information through the antenna 1601, and transmits the received information to the baseband device 1603 for processing. In the downlink direction, the baseband device 1603 processes the information to be transmitted and transmits it to the radio frequency device 1602, and the radio frequency device 1602 processes the received information and then sends it out through the antenna 1601.

[0206] The above frequency band processing device may be located in a baseband device 1603, and the method performed by the network side equipment in the above embodiments may be implemented in the baseband device 1603, which includes a processor 1604 and a memory 1605.

[0207] The baseband device 1603 may include, for example, at least one baseband board, on which multiple chips are installed, and as shown in FIG. 16, one of the chips is, for example, a processor 1604, which is connected to a memory 1605, and calls the program in the memory 1605 to perform the network device operations shown in the above method embodiments.

[0208] The baseband device 1603 may further include a network interface 1606, which is used to exchange information with the radio frequency device 1602, and which may be, for example, a common public radio interface (abbreviated as CPRI).

[0209] Specifically, the network side equipment of the embodiment of the present invention further includes instructions or programs stored in memory 1605 and capable of running on processor 1604, and processor 1604 can call the instructions or programs in memory 1605 to execute the method performed by each module shown in FIG. 13 and achieve the same technical effect, which will not be described further here in order to avoid repetition.

[0210] The embodiments of the present application further provide a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, each process of the embodiment of the method for determining sidelink feedback resource can be realized and the same technical effect can be achieved. In order to avoid repetition, no further description will be given here.

[0211] Wherein, 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.

[0212] An embodiment of the present application further provides a chip, the chip including a processor and a communication interface, the communication interface is coupled to the processor, the processor is used to run a program or instruction to realize each process of the embodiment of the method for determining sidelink feedback resource, and can achieve the same technical effect. In order to avoid repetition, no further description will be given here.

[0213] It should be understood that the chips referred to in the embodiments of the present application may be referred to as system level chips, system chips, chip systems, or systems on chips.

[0214] It should be explained that in this specification, the terms "comprise", "include", or any other variants thereof are intended to cover the non-exclusive "comprise", whereby a process, method, article, or apparatus that includes a set of elements includes not only those elements, but also other elements not expressly listed or inherent to such process, method, article, or apparatus. Absent any further limitations, an element limited by the phrase "comprises a" does not preclude the presence of other identical elements in the process, method, article, or apparatus that includes this element. It should be pointed out that the scope of the method and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may include performing functions in an essentially simultaneous manner or in reverse order based on the functions involved, for example, the described method can be performed in a different order than described, and various steps can be added, omitted, or combined. Also, features described with reference to some examples can be combined in other examples.

[0215] From the above description of the embodiments, it is clear to those skilled in the art that the methods of the above embodiments can be realized in the form of software and a necessary general-purpose hardware platform. Of course, they can also be realized in hardware, but in many cases the former is a more preferred embodiment. In light of this understanding, the technical proposal of the present application may be substantially or the part that contributes to the prior art may be embodied in the form of a computer software product, which is stored in a storage medium (e.g., ROM / RAM, magnetic disk, optical disk) and includes some instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0216] The above describes the embodiments of the present application in conjunction with the drawings, but the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not limiting. Those skilled in the art can take the suggestions of this application and make many forms without departing from the spirit and scope of the claims of this application, all of which belong to the protection scope of this application.

[0217] (CROSS REFERENCE TO RELATED APPLICATIONS) This application claims priority to a Chinese patent application filed on April 15, 2021, bearing application number 2021104082000, entitled "Method, apparatus, terminal, and storage medium for determining sidelink feedback resource," the entire contents of which are incorporated herein by reference.

Claims

1. 1. A method for determining sidelink feedback resources, comprising: The method includes: a first terminal determining a sidelink SL feedback resource, the SL feedback resource being used by the first terminal to transmit feedback information; Determining the SL feedback resource includes determining an interlace index of the SL feedback resource; The interlace index of the SL feedback resource is determined based on a slot number; How sidelink feedback resources are determined.

2. The sidelink SL feedback resource comprises: The SL feedback resource is a distributed resource; The SL feedback resource is a centralized resource; and Satisfy one of the following: The method for determining sidelink feedback resources according to claim 1 .

3. The interlace index of the SL feedback resource satisfies the value that the interlace index of the SL feedback resource is configured; The method for determining sidelink feedback resources according to claim 1 .

4. The slot number is S_num mod(I_num)=A is satisfied; S_num is the slot number, A is a pre-configured value or a value obtained based on the UE ID, I_num is a value predefined or preconfigured or configured by the protocol, or I_num is related to the number of interlaces. The method for determining sidelink feedback resources according to claim 1 .

5. The sequence of the feedback information is The feedback information is transmitted in a sequence having a sequence length of N; the feedback information receiving device detects the feedback information based on a predefined or preconfigured sequence length; Here, the value of N is: being a predefined or preconfigured value; Related to the configuration of the SCS; and related to available resources, The method for determining sidelink feedback resources according to claim 1 .

6. The resource mapping of the feedback information comprises: Mapping the feedback information sequence from a lowest PRB of a frequency domain resource; Mapping the feedback information sequence from a highest PRB of a frequency domain resource; the feedback information sequence being a repetition of the feedback information sequence on each PRB; and relating to an interlace index; The method for determining sidelink feedback resources according to claim 1 .

7. 1. A method for determining sidelink feedback resources, comprising: The feedback information receiving end device determines a sidelink SL feedback resource; and detects or receives feedback information on the sidelink SL feedback resource, the SL feedback resource being used by the first terminal to transmit the feedback information; The SL feedback resource is determined based on an interlace index; The interlace index is determined based on a slot number. How sidelink feedback resources are determined.

8. The sidelink SL feedback resource comprises: The SL feedback resource is a distributed resource; The SL feedback resource is a centralized resource; The method for determining sidelink feedback resources according to claim 7.

9. The interlace index of the SL feedback resource is The interlace index of the SL feedback resource is a configured value; The method for determining sidelink feedback resources according to claim 7.

10. The slot number is S_num mod(I_num)=A is satisfied; S_num is the slot number, A is a pre-configured value or a value obtained based on the UE ID, I_num is a value predefined or preconfigured or configured by the protocol, or I_num is related to the number of interlaces. The method for determining sidelink feedback resources according to claim 7.

11. The sequence of feedback information: The feedback information is transmitted in a sequence having a sequence length of N; the feedback information receiving device detects the feedback information based on a predefined or preconfigured sequence length; Here, the value of N is: being a predefined or preconfigured value; Related to the configuration of the SCS; and related to available resources, The method for determining sidelink feedback resources according to claim 7.

12. The resource mapping of the feedback information comprises: Mapping the feedback information sequence from a lowest PRB of a frequency domain resource; Mapping the feedback information sequence from a highest PRB of a frequency domain resource; the feedback information sequence being a repetition of the feedback information sequence on each PRB; and relating to an interlace index; The method for determining sidelink feedback resources according to claim 7.

13. A terminal comprising a processor, a memory, and a program or instruction stored in the memory and operable on the processor; The program or instructions, when executed by the processor, implement the steps of the method for determining sidelink feedback resources according to any one of claims 1 to 6, or Implementing the steps of the method for determining sidelink feedback resources according to any one of claims 7 to 12, Terminal.

14. A network side device comprising: a processor; a memory; and a program or instruction stored in the memory and operable on the processor; The program or instructions, when executed by the processor, implement the steps of the method for determining sidelink feedback resources according to any one of claims 7 to 12. Network side equipment.

15. A readable storage medium, comprising: A program or instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, - implementing the steps of the method for determining sidelink feedback resources according to any one of claims 1 to 6, or Implementing the steps of the method for determining sidelink feedback resources according to any one of claims 7 to 12, A readable storage medium.

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