Side-link feedback processing method, apparatus, terminal and network-side device

Abstract

This application discloses a sidelink feedback processing method, apparatus, terminal, and network-side device, belonging to the field of communication technologies. The sidelink feedback processing method according to the embodiments of this application includes the terminal acquiring first information, and the terminal determining a target uplink link resource based on the first information. The target uplink link resource is used for transmitting feedback information corresponding to a sidelink (SL) transmission resource in a non-permitted frequency band to a control node. Here, the first information includes a first preset transmission resource, a first preset feedback resource, a preset time, and target control signaling. The target control signaling is used for constructing, indicating, or scheduling at least one of the SL transmission resource, the SL feedback resource, and the preset time. The preset time includes a time range corresponding to the first preset transmission resource. The first preset transmission resource includes at least one SL transmission resource. The first preset feedback resource includes at least one SL feedback resource.

Description

Technical Field

[0001] (Cross - reference to Related Applications) This application claims the priority of Chinese Patent Application No. 202210813664.4 filed on July 11, 2022, and the entire content of the same application is incorporated herein by reference.

[0002] This application belongs to the field of communication technologies, and specifically relates to a sidelink feedback processing method, apparatus, terminal, and network - side device.

Background Art

[0003] With the development of communication technologies, in a mobile communication system, a shared spectrum, for example, an unlicensed band, may well supplement a licensed band and assist operators in expanding services. In a sidelink (SL) communication system, in order to obtain more resources to meet the service requirements of SL transmission (such as services based on SL, such as extended reality, virtual reality, or location - specific services), it may be necessary to perform SL transmission on an unlicensed band. However, many of the current SL technology frameworks are designed for licensed bands or intelligent transportation system (ITS) frequency bands. On an unlicensed band, there may be other wireless technologies, such as wireless fidelity (WIFI). Therefore, it is necessary to first listen to whether the resources are idle, and after determining that they are idle, attempt to start channel access.

[0004] The terminal may fail to acquire the SL transmission resource or the SL feedback resource. As a result, the terminal cannot feedback the corresponding feedback information to the control node according to the conventional rules. For example, for the physical uplink control channel (PUCCH) for feedbacking the hybrid automatic repeat request acknowledgement (HARQ-ACK) information corresponding to the feedback resource of slot n configured in the terminal, if it is located in slot n+k, and the terminal fails to acquire the SL transmission resource or the SL feedback resource, the terminal cannot acquire the HARQ-ACK information and fails to perform HARQ-ACK feedback. In such a case, since the base station has not received a negative acknowledge (NACK), the transmission state of the terminal may be regarded as an acknowledgement (ACK), causing a mismatch in the understanding of the transmission state between the terminal and the network-side device. Therefore, in the prior art, there is a problem that the transmission reliability of the feedback information corresponding to the side link SL transmission resource in the unlicensed frequency band is relatively poor.

Summary of the Invention

Problems to be Solved by the Invention

[0005] Embodiments of the present application provide a side link feedback processing method, apparatus, terminal, and network-side device that can solve the problem that the transmission reliability of the feedback information corresponding to the side link SL transmission resource in the unlicensed frequency band is relatively poor.

Means for Solving the Problems

[0006] According to a first aspect, a side link feedback processing method is provided, and this side link feedback processing method includes: the terminal acquires first information; The terminal includes determining a target uplink link resource based on first information, where the target uplink link resource is used to transmit feedback information corresponding to a sidelink (SL) transmission resource in a non-permitted frequency band to a control node. Here, the first information includes a first preset transmission resource, a first preset feedback resource, a preset time, and target control signaling. The target control signaling is used to configure, indicate, or schedule at least one of the SL transmission resource, the SL feedback resource, and the preset time. The preset time includes a time range corresponding to the first preset transmission resource. The first preset transmission resource includes at least one SL transmission resource, and the first preset feedback resource includes at least one SL feedback resource.

[0007] According to a second aspect, a sidelink feedback processing method is provided. The sidelink feedback processing method includes: A control node transmits first information to a terminal. The first information is used to determine a target uplink link resource, where the target uplink link resource is used to transmit feedback information corresponding to a sidelink (SL) transmission resource in a non-permitted frequency band to the control node. Here, the first information includes a first preset transmission resource, a first preset feedback resource, a preset time, and target control signaling. The target control signaling is used to configure, indicate, or schedule at least one of the SL transmission resource, the SL feedback resource, and the preset time. The preset time includes a time range corresponding to the first preset transmission resource. The first preset transmission resource includes at least one SL transmission resource, and the first preset feedback resource includes at least one SL feedback resource.

[0008] According to a third aspect, a sidelink feedback processing apparatus is provided, and the sidelink feedback processing apparatus includes an acquisition module for acquiring first information, and a determination module for determining a target uplink link resource based on the first information, where the target uplink link resource is used to transmit feedback information corresponding to sidelink SL transmission resources in a non-permitted frequency band to a control node. Here, the first information includes a first preset transmission resource, a first preset feedback resource, a preset time, and target control signaling. The target control signaling is used to configure, indicate, or schedule at least one of the SL transmission resource, the SL feedback resource, and the preset time. The preset time includes a time range corresponding to the first preset transmission resource. The first preset transmission resource includes at least one SL transmission resource, and the first preset feedback resource includes at least one SL feedback resource.

[0009] According to a fourth aspect, a sidelink feedback processing apparatus is provided, and the sidelink feedback processing apparatus includes a first transmission module for transmitting first information to a terminal, where the first information is used to determine a target uplink link resource, and the target uplink link resource is used to transmit feedback information corresponding to sidelink SL transmission resources in a non-permitted frequency band to a control node. Here, the first information includes a first pre-set transmission resource, a first pre-set feedback resource, a pre-set time, and target control signaling. The target control signaling is used to configure, indicate, or schedule at least one of the SL transmission resource, the SL feedback resource, and the pre-set time. The pre-set time includes a time range corresponding to the first pre-set transmission resource. The first pre-set transmission resource includes at least one SL transmission resource. The first pre-set feedback resource includes at least one SL feedback resource.

[0010] According to a fifth aspect, a terminal is provided. The terminal includes a processor and a memory. The memory can store a program or instruction to be executed on the processor. When the program or instruction is executed by the processor, the steps of the method according to the first aspect are implemented, or the steps of the method according to the second aspect are implemented.

[0011] A sixth aspect provides a terminal, including a processor and a communication interface. Here, the communication interface is used to obtain first information, the processor is used to determine a target uplink link resource based on the first information. The target uplink link resource is used to transmit feedback information corresponding to a side link (SL) transmission resource in a non-permitted frequency band to a control node. Here, the first information includes a first preset transmission resource, a first preset feedback resource, a preset time, and target control signaling. The target control signaling is used to configure, indicate, or schedule at least one of the SL transmission resource, the SL feedback resource, and the preset time. The preset time includes a time range corresponding to the first preset transmission resource. The first preset transmission resource includes at least one SL transmission resource. The first preset feedback resource includes at least one SL feedback resource. Alternatively, when the terminal is a control node, the communication interface is used to transmit first information to the terminal. The first information is used to determine a target uplink resource. The target uplink resource is used to transmit feedback information corresponding to a side link (SL) transmission resource in a non-authorized frequency band to the control node. Here, the first information includes a first preset transmission resource, a first preset feedback resource, a preset time, and target control signaling. The target control signaling is used to configure, indicate, or schedule at least one of the SL transmission resource, the SL feedback resource, and the preset time. The preset time includes a time range corresponding to the first preset transmission resource. The first preset transmission resource includes at least one SL transmission resource. The first preset feedback resource includes at least one SL feedback resource.

[0012] According to a seventh aspect, a network-side device is provided, which includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the second aspect are realized.

[0013] The eighth aspect provides a network-side device, including a processor and a communication interface, where the communication interface is used to transmit first information to a terminal, the first information is used to determine a target uplink link resource, and the target uplink link resource is used to transmit feedback information corresponding to a sidelink SL transmission resource in a non-permitted frequency band to a control node. Here, the first information includes a first preset transmission resource, a first preset feedback resource, a preset time, and target control signaling. The target control signaling is used to configure, indicate, or schedule at least one of the SL transmission resource, the SL feedback resource, and the preset time. The preset time includes a time range corresponding to the first preset transmission resource. The first preset transmission resource includes at least one SL transmission resource, and the first preset feedback resource includes at least one SL feedback resource.

[0014] According to a ninth aspect, a communication system including a terminal and a control node is provided. The terminal is used to execute the steps of the sidelink feedback processing method described in the first aspect, and the control node may be used to execute the steps of the sidelink feedback processing method described in the second aspect.

[0015] According to a tenth aspect, a readable storage medium is provided. A program or instructions are stored in the readable storage medium. When the program or instructions are executed by a processor, the steps of the method described in the first aspect are realized, or the steps of the method described in the second aspect are realized.

[0016] According to an eleventh aspect, a chip including a processor and a communication interface is provided, the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the steps of the method described in the first aspect or to implement the steps of the method described in the second aspect.

[0017] According to a twelfth aspect, a computer program / program product is provided, the computer program / program product is stored in a storage medium, and the computer program / program product is executed by at least one processor to implement the steps of the method described in the first aspect or to implement the steps of the method described in the second aspect.

Advantages of the Invention

[0018] In the embodiments of the present application, by acquiring first information and determining a target uplink link resource based on the first information, feedback information corresponding to a sidelink SL transmission resource in a non-permitted frequency band can be transmitted to a control node on the target uplink link resource. In this way, since the target uplink link resource can be determined based on at least one of a first preset transmission resource, a first preset feedback resource, a preset time, and target control signaling, the flexibility of target uplink link resource determination is improved, thereby improving the reliability of feedback information transmission corresponding to the sidelink SL transmission resource in the non-permitted frequency band. At the same time, the efficiency of base station scheduling can be improved.

Brief Description of the Drawings

[0019]

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Embodiments for Carrying Out the Invention

[0020] The following clearly and completely describes the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are some of the embodiments of this application, rather than all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments in this application shall fall within the protection scope of this application.

[0021] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects and are not intended to describe a specific order or sequence. It should be understood that such terms are interchangeable when appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein. Moreover, the objects distinguished by "first" and "second" are generally of the same type, and the number of objects is not limited. For example, the first object may be one or a plurality. Note that "and / or" in the description and claims represents at least one of the connected objects, and the character " / " generally represents that the related objects before and after are in an "or" relationship.

[0022] It should be noted that the technology described in the embodiments of the present application is 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 described technology may be used in the systems and radio technologies mentioned above, or in other systems and radio technologies. The following description describes the New Radio (NR) system for illustrative purposes and uses NR terms in most of the following descriptions. However, these technologies may also be applied to applications other than NR system applications, such as the sixth generation (6 th Generation, 6G) communication system.

[0023] FIG. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network-side device 12. Here, the terminal 11 may be a mobile phone, a tablet personal computer, a laptop computer (or called a notebook computer), a personal digital assistant (PDA), a palm-top computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, a vehicle user equipment (VUE), a pedestrian user equipment (PUE), a smart home (home devices having a wireless communication function, such as a refrigerator, a television, a washing machine, or furniture), a game machine, a personal computer (PC), a deposit / withdrawal machine, or a self-service machine, etc. The wearable device may include a smart watch, a smart band, smart earphones, smart glasses, a smart accessory (such as a smart bracelet, a smart necklace, a smart ring, a smart anklet, etc.), a smart list band, a smart clothing, etc. It should be noted that in the embodiments of the present application, the specific type of the terminal 11 is not limited. The network-side device 12 may include an access network device or a core network device. Here, the access network device may also be called a wireless access network device, a radio access network (RAN), a wireless access network function, or a wireless access network unit.The access network device may include a base station, a Wireless Local Area Network (WLAN) access point, or a WiFi node, etc. The base station may be called a Node B, an Evolved Node B (eNB), an access point, a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a Home B Node, a Home evolved B Node, a Transmitting Receiving Point (TRP), or other appropriate terms in the art. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of this application, only the base station in the NR system is taken as an example, but it does not limit the specific type of the base station.

[0024] For ease of understanding, the following describes some contents related to the embodiments of this application.

[0025] I. Shared spectrum or unlicensed frequency band.

[0026] In a communication system, shared spectrum, such as unlicensed frequency bands, can assist operators in expanding services as a supplement to licensed frequency bands. To be consistent with the deployment of New Radio (NR) and maximize NR-based unlicensed access as much as possible, the unlicensed frequency bands may operate in the 5 GHz, 37 GHz, or 60 GHz bands. Since unlicensed frequency bands are shared by various radio access technologies (RATs), such as WiFi and radar, Long Term Evolution License Assisted Access (LTE-LAA), etc., in some countries or regions, unlicensed frequency bands must comply with rules, such as listen before talk (LBT), Maximum Channel Occupancy Time (MCOT), etc., when in use to ensure that all devices use this resource fairly. When a transmission node needs to send information and first needs to perform LBT, it needs to perform energy detection (ED) on surrounding nodes. If the detected power is lower than a threshold, the channel is considered idle and the transmission node can transmit. Conversely, if the channel is busy, the transmission node is considered unable to transmit. The transmission node may be a base station, a terminal, a WiFi access point (AP), etc. After the transmission node starts transmission, the channel occupancy time (COT) it occupies cannot exceed the MCOT.

[0027] The commonly used types of LBT can be divided into category 1, category 2, and category 4. Category 1 LBT means that the transmitting node does not perform LBT and transmits immediately without LBT or with LBT. Category 2 LBT is one-shot LBT. The node performs LBT once before transmission, transmits when the channel is idle, and does not transmit when the channel is busy. Category 4 LBT is a channel listening mechanism based on back-off. When the transmitting node listens that the channel is busy, it performs back-off and continues to listen until it listens that the channel is idle. For NR nodes (NR Node B, gNB), category 2 LBT is applied to the Physical Downlink Shared Channel (PDSCH) without a Demodulation Reference Signal (DRS), and category 4 LBT is applied to PDSCH, the Physical Downlink Control Channel (PDCCH), and the Enhanced Physical Downlink Control Channel (ePDCCH). For terminals, category 4 LBT corresponds to the type 1 uplink channel access procedure, and category 2 LBT corresponds to the type 2 uplink channel access procedure.

[0028] LBT includes two types: Frame-Based Equipment (FBE) and load Based Equipment (LBE).

[0029] In FBE, the device adopts a periodic structure where the normal transmission / reception timing period is the Fixed Frame Period (FFP). The FBE node adopts a channel access mechanism based on LBT to occupy the channel. Here, a node that starts a transmission sequence including one or multiple consecutive transmissions is called the Initiating Device, and other nodes are called the Responding Device. The FBE node may support the functions of the initiating node, the responding node, or both node functions simultaneously.

[0030] For LBE, the transmitting node can start LBT at any time. When it listens and determines that the channel is idle, transmission becomes possible. For the transmitting node, there is no fixed listening time, and when it listens and determines that the channel is busy, it does not need to skip. It can continue listening by backing off the Enhanced Clear Channel Assessment (eCCA) for a certain period until the eCCA counter becomes zero.

[0031] In SL, channel access may be performed using the LBE method in the unlicensed frequency band for information transmission.

[0032] II. NR SL Resource Allocation Mode.

[0033] NR Vehicle-to-Everything (NR V2X) supports two resource allocation modes: Scheduled resource allocation mode and autonomous resource selection mode. The former is generally called mode-1, and the latter is generally called mode-2. The former is controlled by network-side devices to allocate resources for each UE, and the latter allows UEs to autonomously select resources.

[0034] In mode-1, the base station can schedule or activate NR SL resources for users via Downlink Control Information (DCI), and the format of this SL DCI is DCI format 3-0. In mode-1, the base station can also activate LTE SL resources for users via another DCI format 3-1.

[0035] In mode-2, it can be further divided into multiple sub-modes.

[0036] Mode2d: The scheduling UE or header UE can schedule the SL transmission of other UEs.

[0037] Mode2b: Terminal A can send auxiliary information to Terminal B to assist its SL transmission. Mode2c: The terminal acquires static or semi-static pairs of SL resources for transmission.

[0038] III. Sidelink Hybrid Automatic Repeat Request (Sidelink HARQ) information reporting.

[0039] To improve the reliability of data transmission and resource utilization in sidelink, a HARQ feedback mechanism has also been introduced in sidelink technology: after receiving the Physical SideLink Control Channel (PSCCH) and / or the Physical SideLink Shared Channel (PSSCH), the sidelink receiving user feeds back sidelink Hybrid Automatic Repeat Request acknowledgement (sidelink HARQ-ACK) information on the Physical SideLink Feedback Channel (PSFCH) corresponding to the PSCCH and / or the PSSCH to indicate whether the sidelink data has been successful or failed. After receiving the sidelink HARQ-ACK information on the sidelink, the sidelink transmitting user can know whether the previous transmission has been successful or failed. It should be noted that one sidelink user may be a transmitting user or a receiving user, and the same user may receive or transmit on different time or frequency domains respectively.

[0040] Since the transmission of sidelink data packets may occur on the sidelink between users, the control node may not be able to directly know whether the transmission of this sidelink data packet is successful. It is necessary for the user to send sidelink HARQ ACK information (such as sidelink ACK or sidelink NACK) to the control node, so that the control node can further determine whether the transmission on the sidelink is successful. In the case of Mode-1, the user reports SL HARQ information to the control node via PUCCH or Physical Uplink Shared Channel (PUSCH).

[0041] The reporting of SL HARQ information supports reporting in codebook format. The uplink resources used for one of the SL HARQ information reports may be associated with one or more PSFCH resources, and the priority of the PSFCH is related to the priority of other corresponding SL transmissions. However, for some special situations, when the receiving side does not perform HARQ feedback or the transmitting side does not detect the PSFCH, there is still SL HARQ information.

[0042] In the following, the sidelink feedback processing method according to the embodiments of the present application will be described in detail by means of several embodiments and their application scenarios in conjunction with the drawings.

[0043] Referring to FIG. 2, the embodiment of the present application provides a sidelink feedback processing method. As shown in FIG. 2, this sidelink feedback processing method includes In step 201, the terminal obtains first information, and In step 202, the terminal determines a target uplink resource based on the first information. The target uplink resource is used to transmit feedback information of sidelink SL transmission resources in an unlicensed frequency band to the control node. Here, the first information includes a first preset transmission resource, a first preset feedback resource, a preset time, and target control signaling. The target control signaling is used to configure, indicate, or schedule at least one of the SL transmission resource, the SL feedback resource, and the preset time. The preset time includes a time range corresponding to the first preset transmission resource. The first preset transmission resource includes at least one SL transmission resource, and the first preset feedback resource includes at least one SL feedback resource.

[0044] In an embodiment of the present application, the control node may be a network-side device, a relay and / or a terminal with scheduling capabilities, a terminal directly instructed / scheduled by a base station, a terminal that has successfully accessed / preempted a resource, or a terminal that performs resource sharing, etc.

[0045] Optionally, the SL transmission resource may include at least one of PSSCH, PSCCH, sidelink Synchronization Signal and PBCH block (S-SSB), and sidelink Reference Signal (SL RS). The SL feedback resource may be PSSCH, PSCCH, PSFCH, or SL RS that carries a response to a message transmitted on the SL transmission resource, for example, PSFCH. It should be understood that in an embodiment of the present application, transmission may include reception or transmission, and the message to be transmitted may be understood as a transmitted message or a received message.

[0046] Alternatively, another possible scenario is that the above SL transmission resource is a PSFCH, and the above SL feedback resource is at least one of a PSSCH, a PSCCH, a sidelink Synchronization Signal and PBCH block (S-SSB), and a sidelink Reference Signal (SL RS) that responds to or feeds back the PSFCH. For example, when the PSFCH indicates recommended resource information and / or non-recommended resource information, based on this recommended resource information and / or non-recommended resource information, the UE can select the recommended resource from the candidate resources or exclude the non-recommended resources, and select an appropriate PSSCH resource for subsequent transmission. The PSSCH resource selected by the UE can be regarded as a response to the PSFCH. Or, the PSFCH carries HARQ-ACK information and / or the execution result of the first behavior, whereby the UE determines whether to reselect a resource or not based on this HARQ-ACK information and / or the execution result of the first behavior, or determines whether to transmit newly, whereby the finally transmitted PSSCGH can also be regarded as a response to the PSFCH.

[0047] It should be understood that in this application, transmission may be interpreted as either transmission or reception.

[0048] In some embodiments, the SL transmission resource is the PSSCH and / or PSCCH, and the SL feedback resource is the PSFCH. In some embodiments, the SL transmission resource is a resource that carries channel state information (CSI) requests / radio resource control (RRC) connection establishment requests / RRC configuration messages / DRX assistance information / DRX configurations, and the SL feedback resource is a resource that carries the corresponding response messages, such as a resource that carries a CSI report / RRC connection establishment response / rejection message / success message / DRX response or assistance information, etc.

[0049] In some embodiments, the SL transmission resource may be an occasion of (one or more, one set or multiple sets of) resources, a time domain resource, a time domain range (e.g., COT), a frequency domain resource, a frequency domain range, a time-frequency resource, a configured grant (CG), a timer (e.g., a resource corresponding to the operation of the timer, e.g., a resource corresponding to before the start or after the end of the timer), a counter (a resource or a time domain range corresponding to when the counter decrements to a certain threshold or accumulates in ascending order to a certain threshold, e.g., a resource or a time domain range corresponding to when it decrements to 0).

[0050] Optionally, the first preset transmission resource may be at least a part of the SL transmission resources indicated, configured, or scheduled for the terminal by a base station or another node having scheduling capabilities. The first preset feedback resource may be at least a part of the SL feedback resources indicated, configured, or scheduled for the terminal by a base station or another node having scheduling capabilities, and / or may be the SL feedback resources corresponding to at least a part of the SL transmission resources indicated, configured, or scheduled for the terminal by a base station or another node having scheduling capabilities. Of course, in other embodiments, the first preset transmission resource may be the SL transmission resources autonomously determined or monitored by the terminal, or may be at least a part of the preset SL transmission resources. Similarly, the first preset feedback resource may be the SL feedback resources autonomously determined or monitored by the terminal, or may be at least a part of the preset SL feedback resources.

[0051] Optionally, the terminal may be any one of a first terminal, a second terminal, and a third terminal. Here, the first terminal is a terminal that transmits or receives on the SL transmission resource, the second terminal is a terminal that communicates with the first terminal, or a terminal that needs to perform feedback on the SL feedback resource, and the third terminal is a terminal other than the first terminal and the second terminal.

[0052] It should be noted that for the first behavior, the terminal can listen for a resource, or the channel where the resource is located, or a resource block set (RB set) where the resource is located. For example, when performing LBT and an idle state is listened for, it can be considered that the terminal has obtained the right to use the resource and / or the channel where the resource is located or the RB set where the resource is located, or it can be considered that the terminal has successfully accessed the right to use the resource and / or the channel where the resource is located or the RB set where the resource is located. Furthermore, the terminal can only use or access the right to use this resource and / or the channel where the resource is located or the RB set where the resource is located within a certain period of time. This period of time may be one COT, and furthermore, this COT may be shared with others. For example, this terminal may instruct another terminal to share, and the other terminal can directly use the resource without the need for very short-term monitoring and thus without the need for monitoring.

[0053] In the embodiments of the present application, by obtaining first information and determining a target uplink link resource based on the first information, feedback information corresponding to a sidelink SL transmission resource in a non-authorized frequency band can be transmitted to a control node on the target uplink link resource. In this way, since the target uplink link resource can be determined based on at least one of a first preset transmission resource, a first preset feedback resource, a preset time, and target control signaling, the flexibility of target uplink link resource determination is improved, thereby improving the reliability of feedback information transmission corresponding to the sidelink SL transmission resource in the non-authorized frequency band. At the same time, the efficiency of base station scheduling can be improved.

[0054] In the embodiments of the present application, when the first terminal is a terminal instructed or scheduled by a control node, this first terminal may be understood as a terminal corresponding to mode-1. When the second terminal is a terminal instructed or scheduled by a control node, this second terminal may be understood as a terminal corresponding to mode-1.

[0055] That is, the above-mentioned first terminal and second terminal are The first terminal is a terminal scheduled by a mode-1 terminal and / or a control node and / or a terminal instructed by a control node, Both the first terminal and the second terminal are terminals scheduled by a mode-1 terminal and / or a control node and / or terminals instructed by a control node, The first terminal is a peer UE or communication UE of a mode-1 terminal and / or a peer UE or communication UE of a terminal scheduled by a control node and / or a peer UE or communication UE of a terminal instructed by a control node. And the second terminal satisfies any one of the following: being a terminal scheduled by a mode-1 terminal and / or a control node and / or a terminal instructed by a control node.

[0056] Optionally, in some embodiments, the first pre-set transmission resource includes at least one of: any SL transmission resource, each SL transmission resource, the A-th (A is a positive integer) SL transmission resource, the SL transmission resource located at a pre-set time domain position, the SL transmission resource corresponding to a pre-set number, the last SL transmission resource corresponding to the same SL feedback resource, the SL transmission resource corresponding to a pre-set number of delay times, the corresponding SL transmission resource when reaching the limit corresponding to delay, access or listen-before-talk LBT, the first SL transmission resource corresponding to successful access, and the first SL transmission resource after successful LBT.

[0057] In an embodiment of the present application, the above first preset resource may be understood as any SL transmission resource among the SL transmission resources configured, instructed, or scheduled for the terminal, or as each SL transmission resource among the SL transmission resources configured, instructed, or scheduled for the terminal, or as the A-th SL transmission resource among the SL transmission resources configured, instructed, or scheduled for the terminal, or as the SL transmission resource located at a preset time region position among the SL transmission resources configured, instructed, or scheduled for the terminal, or as the SL transmission resource corresponding to a preset number among the SL transmission resources configured, instructed, or scheduled for the terminal, or as the last SL transmission resource among the SL transmission resources corresponding to the same SL feedback resource in the SL transmission resources configured, instructed, or scheduled for the terminal.

[0058] The number of deferrals may be understood as actually being deferred by a preset number of times, or as being assumed to be deferred by a preset number of times. For example, the base station instructs three resources, and the terminal starts LBT from the first resource or before the first resource. If the access to the first resource fails, the terminal continues LBT to attempt access to the next resource. The SL transmission resource corresponding to 2 deferrals (defer may be understood as the LBT or access fails and is postponed to the next resource) is the third transmission resource.

[0059] Reaching the limit corresponding to the deferral, access, or listen-before-talk LBT may be understood as reaching a preset number of deferral times, a corresponding preset number of access times, or a corresponding preset number of LBT times, reaching a preset number of access failure times, reaching a preset number of LBT failure times, reaching the total number of access failures, reaching the maximum limit of the preset total number of LBT failures, reaching the maximum limit of continuous access failures, or reaching the maximum limit of the number of LBT failures.

[0060] The first SL transmission resource corresponding to successful access may be understood as the first SL transmission resource corresponding to the Nth successful access, and the first SL transmission resource after successful LBT may be understood as the first SL transmission resource after the Nth successful LBT. Here, N is a positive integer.

[0061] Optionally, in some embodiments, the first pre-set transmission resource is located within a first time, and the first time includes at least one of: an occasion of at least one resource, an occasion of at least one set of resources, a time-domain resource, a time-domain range, a frequency-domain resource, a frequency-domain range, a range or resource corresponding to a timer, a range or resource corresponding to a counter (a resource or time-domain range corresponding to when the counter decreases to a certain threshold or accumulates in ascending order to a certain threshold, e.g., a resource or time-domain range corresponding to when it decreases to 0), a time corresponding to the obtained usage right, a time before obtaining the usage right, a time corresponding to after successful access, and a time corresponding to failed access.

[0062] In the embodiments of the present application, if the above first pre-set transmission resource is assumed to be the last SL transmission resource and at the same time needs to be within the first time, this first pre-set resource may be understood as the last SL transmission resource within the first time.

[0063] For example, in some embodiments, the first time may be the COT obtained by the first terminal and / or the second terminal.

[0064] For example, in some embodiments, the first time is the time after obtaining the usage right or accessing. For example, the first pre-set transmission resource is the last SL transmission resource after obtaining the usage right and / or accessing and / or succeeding in LBT.

[0065] For example, in some embodiments, the first time is the time before the usage right has not been obtained and / or cannot be accessed and / or the LBT has failed. For example, when the first preset transmission resource is the last SL transmission resource before the usage right has not been obtained and / or cannot be accessed and / or the LBT has failed.

[0066] Optionally, in some embodiments, when the first information includes the first preset transmission resource, the terminal determining the target uplink link resource based on the first information is the terminal includes determining, based on the association relationship between each SL transmission resource among the first preset transmission resources and the target uplink link resource, the target uplink link resource corresponding to each SL transmission resource among the first preset transmission resources.

[0067] Optionally, in some embodiments, when the first information includes the first preset feedback resource, the terminal determining the target uplink link resource based on the first information is the terminal determines, based on the association relationship between each SL feedback resource among the T SL feedback resources and the target uplink link resource, the target uplink link resource corresponding to each SL feedback resource among the T SL feedback resources respectively, where T is a positive integer, and the T SL feedback resources are feedback resources indicated, configured, preconfigured or scheduled for the terminal, or feedback resources autonomously determined or monitored by the terminal, and the T SL feedback resources include the first preset feedback resource, and the terminal includes either determining the target uplink link resource based on the target feedback resource among the first preset feedback resources. Here, the target feedback resource includes at least one of any SL feedback resource, each SL feedback resource, the B-th (B is a positive integer) SL feedback resource, the SL feedback resource located at a preset time region position, the SL feedback resource corresponding to a preset number, the last SL feedback resource among the SL feedback resources corresponding to the same SL feedback resource, the SL feedback resource corresponding to a preset number of delay times, the corresponding SL feedback resource when the limit corresponding to delay, access or LBT is reached, the first SL feedback resource corresponding to successful access, and the first SL feedback resource after successful LBT.

[0068] The first SL transmission resource corresponding to successful access may be understood as the first SL transmission resource corresponding to the M-th successful access, and the first SL transmission resource after successful LBT may be understood as the first SL transmission resource after the M-th successful LBT. Here, M is a positive integer.

[0069] In an embodiment of the present application, the above target feedback resource may be understood as an SL feedback resource among the SL feedback resources corresponding to the first preset transmission resource. For example, the target feedback resource may be any SL feedback resource among the SL feedback resources corresponding to the first preset transmission resource, each SL feedback resource among the SL feedback resources corresponding to the first preset transmission resource, the B-th SL feedback resource among the SL feedback resources corresponding to the first preset transmission resource, the SL feedback resource corresponding to a preset number among the SL feedback resources corresponding to the first preset transmission resource, or the last SL feedback resource among the SL feedback resources corresponding to the same SL feedback resource among the SL feedback resources corresponding to the first preset transmission resource.

[0070] In some embodiments, the above target uplink resource may be determined based on an SL feedback resource preset corresponding to a delay. For example, there are four SL feedback resource candidates, and the UE starts LBT from the first one. After failure, it continues with the next resource of LBT. The SL transmission resource corresponding to two defer is the third SL feedback resource candidate.

[0071] Optionally, in some embodiments, there is an SL feedback resource located within the second time for the above first preset feedback resource. Here, the second time includes one of at least one resource occasion, at least one set of resource occasions, a time domain resource, a time domain range, a frequency domain resource, a frequency domain range, a range or resource corresponding to a timer, a range or resource corresponding to a counter (the resource or time domain range corresponding when the counter decreases to a certain threshold or accumulates in ascending order to a certain threshold, for example, the resource or time domain range corresponding when decreasing to 0), the time corresponding to the obtained usage right, and the time before obtaining the usage right.

[0072] In an embodiment of the present application, the above time domain range may be understood as a window, COT, period, etc. Optionally, here this time range, for example, this window or this COT, may be indicated by a control node, for example, indicated by DCI, or may be determined after the UE performs LBT.

[0073] Optionally, in some embodiments, there is an SL feedback resource located outside the second time in the first preset feedback resource, and the SL feedback resource located outside the second time has a related target uplink link resource. Here, the second time includes one of at least one resource occasion, at least one set of resource occasions, a time domain resource, a time domain range, a frequency domain resource, a frequency domain range, a range or resource corresponding to a timer, a range or resource corresponding to a counter (the resource or time domain range corresponding when the counter decreases to a certain threshold or accumulates in ascending order to a certain threshold, for example, the resource or time domain range corresponding when decreasing to 0), the time corresponding to the obtained usage right, and the time before obtaining the usage right.

[0074] That is, some of the SL feedback resources in the above first preset feedback resource may be located outside the second time, and some feedback resources may be located within the second time.

[0075] Here, the feedback resource located within the second time has the associated target uplink resource, and the feedback resource located outside the second time may or may not have the associated target uplink resource.

[0076] For example, in some embodiments, the second time may be the COT obtained by the first terminal and / or the second terminal.

[0077] For example, in some embodiments, the second time is the time after obtaining the usage right or accessing. For example, the first preset transmission resource is the last SL transmission resource after obtaining the usage right and / or accessing and / or succeeding in LBT.

[0078] For example, in some embodiments, the second time is the time before not obtaining the usage right and / or not being able to access and / or failing in LBT. When the first preset feedback resource is the last SL feedback resource before not obtaining the usage right and / or not being able to access and / or failing in LBT.

[0079] Optionally, when determining the target uplink resource based on a preset time, the target uplink resource may be determined based on the SL feedback resource within the second time. For example, in some embodiments, the SL feedback resource located within the second time has the associated target uplink resource, or the target feedback resource among the SL feedback resources located within the second time has the associated target uplink resource.

[0080] Here, when the SL feedback resource located at the second time has a related target uplink link resource, at this time, the target uplink link resources are respectively determined based on the SL feedback resources within the second time, or the first preset feedback resource is each SL feedback resource within the second time range.

[0081] Optionally, in some embodiments, the preset time is The preset time includes at least one of the occasion of at least one resource, the occasion of at least one set of resources, the time domain resource, the time domain range, the frequency domain resource, the frequency domain range, the range or resource corresponding to the timer, the range or resource corresponding to the counter, the time corresponding to the obtained usage right and the time before obtaining the usage right. The preset time includes the first time, and the first time is related to the first preset transmission resource. The preset time includes the second time, and the first time is related to the first preset feedback resource. The preset time is the SL Configured Grant (CG) period. The preset time satisfies at least one of having a related target uplink link resource (for example, DCI indicates a PUCCH related to a preset time and this preset time).

[0082] Optionally, in some embodiments, the target control signaling has a related target uplink link resource. For example, DCI indicates one or more PUCCHs.

[0083] Optionally, in some embodiments, the terminal determines the target uplink link resource based on the first information, which is The terminal performs a position offset based on the first position or the second position to determine the position of the target uplink resource, The terminal determines the position of the target uplink resource based on the uplink resource position related to the first position, and / or the terminal determines the format of the target uplink resource based on the uplink resource format related to the first position, The terminal includes at least one of: determining the position of the target uplink resource based on the preset time or the uplink resource position related to the target control signaling, and / or determining the format of the target uplink resource based on the preset time or the uplink resource format related to the target control signaling, Here, the first position is the position of the first preset transmission resource, and the second position is the position of the first preset feedback resource.

[0084] In the embodiments of the present application, the method for determining the position and / or format of the target uplink resource based on the first preset transmission resource is as follows.

[0085] First, an offset may be performed based on the position of the first preset transmission resource or at least a part of the SL feedback resources (or called SL feedback resource candidates) of the first preset transmission resource, and the position after the offset is the position of the target uplink resource. Optionally, this offset is configured or instructed by the control node.

[0086] Second, assume that there is a correspondence relationship between the position of at least a part of the SL feedback resources of the first preset transmission resource or the first preset transmission resource and the position and / or format of the target uplink resource, and determine the position and / or format of the target uplink resource based on this correspondence relationship. Optionally, this correspondence relationship is configured or instructed by the control node.

[0087] Furthermore, the specific method for determining the position and / or format of the target uplink resource based on the preset time and the target control signaling is as follows.

[0088] First, an offset may be performed based on the preset time or the start or reception time of the target control signaling, and the position after the offset is the position of the target uplink resource. Optionally, this offset is configured or instructed by the control node.

[0089] Second, assume that there is a correspondence relationship between the preset time / target control signaling (for example, the preset time or the start or reception time of the target control signaling) and the position and / or format of the target uplink resource, and determine the position and / or format of the target uplink resource based on this correspondence relationship. Optionally, this correspondence relationship is configured or instructed by the control node.

[0090] Optionally, in some embodiments, the offset amount of the position offset is related to at least one of the access interval, the number of accesses, the access time duration, the access type, the LBT interval, the number of LBTs, the LBT time duration, and the LBT type.

[0091] In some embodiments, LBT of type A corresponds to offset 1, and LBT of type B corresponds to offset 2.

[0092] Optionally, in some embodiments, the method The terminal further includes transmitting second information on a target uplink link resource that satisfies a first preset condition, where the second information includes feedback information on the SL transmission resource. Here, the first preset condition is at least one terminal successfully accesses the SL transmission resource corresponding to the target uplink link resource and succeeds in LBT or can be used; at least one terminal successfully accesses the SL feedback resource corresponding to the target uplink link resource and succeeds in LBT or can be used; being the last uplink link resource among the determined multiple target uplink link resources; being the target uplink link resource corresponding to the SL feedback resource when reaching the limit corresponding to delay, access, or LBT; being the target uplink link resource corresponding to the SL transmission resource when reaching the limit corresponding to delay, access, or LBT; including at least one of being the corresponding target uplink link resource when reaching the limit corresponding to delay, access, or LBT.

[0093] In some embodiments, PSFCH1, PSFCH2, and PSFCH3 all fail to access, and after successfully accessing the channel, obtain an opportunity to transmit on PSFCH4 associated with PUCCH4, and PUCCH4 may actually be used for reporting by the first terminal and / or other UEs.

[0094] The corresponding limit may be a preset number of times or a maximum number of times, and no further limitation is imposed here.

[0095] Optionally, the target uplink link resource may be a PUCCH or a PUSCH.

[0096] Optionally, in some embodiments, the terminal obtaining the first information is including the terminal receiving the first information from the control node.

[0097] Optionally, the first terminal is a terminal instructed or scheduled by the control node, and / or the second terminal is a terminal instructed or scheduled by the control node.

[0098] Optionally, in some embodiments, the terminal is the second terminal, and the method the terminal performing a first behavior corresponding to at least two SL feedback resources, the terminal further including performing a first operation based on a result of the first behavior corresponding to the SL feedback resource, wherein the first operation when the first behavior corresponding to the first SL feedback resource is successful, ceasing to perform the first behavior corresponding to a subsequent SL feedback resource of the first SL feedback resource; when the first behavior corresponding to the first SL feedback resource is successful, determining a target uplink link feedback resource corresponding to the first SL feedback resource and / or a target uplink link resource for reporting the target uplink link feedback information; when the first behavior corresponding to the second SL feedback resource fails, continuing to perform the first behavior corresponding to a subsequent SL feedback resource of the second SL feedback resource, wherein the first behavior includes listening, LBT or access.

[0099] In an embodiment of the present application, when the second preset condition is satisfied, the terminal may perform a first behavior corresponding to at least two SL feedback resources, and perform a step of performing a first operation based on the result of the first behavior corresponding to the SL feedback resource. Here, the second preset condition includes at least one of the first information including the at least two SL feedback resources and the SL transmission resource corresponding to the at least two SL feedback resources. Optionally, when the first behavior corresponding to the second SL feedback resource fails, the first behavior corresponding to the subsequent SL feedback resource of the second SL feedback resource may be continuously performed, and a limit for ending the first behavior may be set. For example, the first behavior is ended until the first behavior is successful, until the corresponding limit is reached, until the limit for access is reached, or until the limit for LBT is reached.

[0100] For example, when listening / LBT / access is successful, listening / LBT / access corresponding to the remaining SL feedback resources is no longer performed. When reaching the SL feedback resource at the time of the above defer or access or LBT limit, the corresponding target uplink link feedback information and / or target uplink link resources are determined and reported based on this SL feedback resource.

[0101] Optionally, when the above target information is determined based on the first mapping relationship, when the first mapping relationship includes the mapping relationship between the SL transmission resource and the SL feedback resource, for example, when one PSFCH occasion corresponds to four PSSCH occasions, the HARQ-ACK corresponding to these four PSSCH occasions may be fed back on this PSFCH occasion.

[0102] When the first mapping relationship includes the mapping relationship between the SL feedback resource and the SL transmission resource, for example, there are 4 PSFCH occasions corresponding to one PSSCH occasion. That is, for the HARQ-ACK corresponding to the PSSCH, there are 4 PSFCH occasions where feedback is possible.

[0103] Optionally, in some embodiments, the target uplink link feedback information includes target uplink link feedback sub-information corresponding to at least some of the first preset feedback resources, and the target uplink link feedback sub-information includes at least one of HARQ-ACK information and information on the first behavior.

[0104] In the embodiments of the present application, the information on the first behavior may include at least one of the number of listening or access (such as Listen Before Talk LBT) times, or the maximum number of listening or access (such as LBT) times, and the number of listening or access (such as LBT) failure times, or the maximum number of listening or access (such as LBT) failure times, and the listening or access (such as LBT) success interval, the maximum listening or access (such as LBT) success interval, or the minimum listening or access (such as LBT) success interval.

[0105] In the embodiments of the present application, the above LBT times may be understood as the number of CCA times or eCCA times or the value of the LBT counter, and the above maximum LBT times may be understood as the maximum number of CCA times or eCCA times or the maximum value of the LBT counter.

[0106] The above failures may be understood as cumulative failures or consecutive failures. The above LBT failure count may be understood as the CCA failure count, or the eCCA failure count, or the number of times the LBT counter remains constant. The above maximum LBT failure count may be understood as the maximum CCA failure count, or the maximum eCCA failure count, or the maximum number of times the LBT counter remains constant.

[0107] The above success interval may be understood as a cumulative success interval or a consecutive success interval. For example, when the interval value is 2, the listening information may include the interval / maximum interval between two successful CCAs or two successful eCCAs. Alternatively, the listening information may include the interval between two times when the LBT counter decreases, or the number of times the counter remains constant, the maximum interval or minimum interval between two times when the LBT counter decreases, or the maximum number of times or minimum number of times it remains constant.

[0108] Optionally, the target uplink link feedback sub-information corresponding to the first SL feedback resource is the hybrid automatic repeat request response HARQ-ACK information, and includes either one of the HARQ-ACK information and the information on the first behavior.

[0109] Optionally, the target uplink link feedback sub-information corresponding to the first SL feedback resource is the hybrid automatic repeat request response HARQ-ACK information, and includes either one of the HARQ-ACK information and the information on the first behavior.

[0110] Optionally, the first preset feedback resource includes the first SL feedback resource.

[0111] Optionally, the first preset feedback resource further includes at least one of the second SL feedback resources, and the target uplink link feedback sub-information corresponding to the second SL feedback resource is transmitted on the target uplink link resource corresponding to the first SL feedback resource.

[0112] In the embodiments of this application, it may be understood that the target uplink link feedback sub-information corresponding to the second SL feedback resource is transmitted with a delay on the target uplink link resource corresponding to the first SL feedback resource.

[0113] It should be understood that after a certain resource LBT, the following specific method can be used to determine how to determine the reported content corresponding to this resource.

[0114] 1. If the listening / LBT / access to a certain (for example, the first) SL feedback resource is successful, the target uplink link feedback information and / or the target uplink link feedback sub-information corresponding to this SL feedback resource only includes target HARQ-ACK information. For example, the target uplink link feedback sub-information or the target HARQ-ACK information corresponding to this SL feedback resource is set to the SL HARQ-ACK corresponding to the SL transmission resource corresponding to this SL feedback resource. In this way, the ability to feedback HARQ-ACK information indicates that the positive response of LBT is successful, so the result of LBT does not need to be indicated separately.

[0115] 2. If the listening / LBT / access to a certain (e.g., the first) SL feedback resource is successful, the target uplink feedback information and / or the target uplink feedback sub-information corresponding to this SL feedback resource includes target result information and target HARQ-ACK information. For example, the target uplink feedback sub-information or the target HARQ-ACK information corresponding to this SL feedback resource is set to the SL HARQ-ACK corresponding to the SL transmission resource corresponding to this SL feedback resource. Optionally, the target result information corresponding to this SL feedback resource indicates a successful listening / LBT / access. In this way, regardless of the LBT result, the composition and size of the information that needs to be reported are fixed, thereby reducing the control node's understanding of the information fed back by the terminal.

[0116] 3. For the plurality of SL feedback resources, if the listening / LBT / access to a certain SL feedback resource fails, the target uplink feedback information and / or the target uplink feedback sub-information corresponding to this SL feedback resource includes only the target result information. For example, this information indicates a failure in listening / LBT / access. In this way, LBT fails, and the first terminal naturally cannot determine the HARQ-ACK, so the HARQ-ACK result is not separately indicated. This method is suitable when the first terminal reports the target uplink link information.

[0117] 4. For the plurality of SL feedback resources, if the listening / LBT / access to a certain SL feedback resource fails, the target uplink link feedback information and / or the target uplink link feedback sub-information corresponding to this SL feedback resource includes target result information and target HARQ-ACK information. For example, this target uplink link feedback sub-information indicates the failure of listening / LBT / access and the corresponding SL HARQ-ACK, and this target uplink link feedback sub-information indicates the failure of listening / LBT / access and NACK. In this way, regardless of the LBT result, the composition and size of the information that needs to be reported are fixed, thereby reducing the control node's understanding of the information fed back by the terminal.

[0118] It should be understood that after a certain resource LBT, the following specific solutions can be adopted for how to transmit the report content corresponding to this resource.

[0119] Solution 1. If the listening / LBT / access to a certain SL feedback resource is successful, at least on the target uplink link feedback sub-information corresponding to this SL feedback resource, set the target uplink link feedback sub-information or target HARQ-ACK information corresponding to this SL feedback resource to the SL HARQ-ACK corresponding to the SL transmission resource corresponding to this SL feedback resource, and the target result information corresponding to this SL feedback resource indicates at least one of the information indicating the success of listening / LBT / access. When successful, the target uplink link feedback sub-information corresponding to itself indicates its own state.

[0120] Solution 2. If the listening / LBT / access to a certain SL feedback resource fails, at least one of the following is satisfied.

[0121] a) The target HARQ-ACK information and / or target result information corresponding to this SL feedback resource is deferred and transmitted on the target uplink resource corresponding to another SL feedback resource (e.g., the next SL feedback resource), or the target uplink feedback sub-information corresponding to another SL feedback resource (e.g., the next SL feedback resource) can be said to indicate / include the target HARQ-ACK information and / or target result information corresponding to this SL feedback resource. Optionally, only the target HARQ-ACK information is deferred, and the target HARQ-ACK information corresponding to this SL feedback resource is transmitted on the target uplink resource corresponding to another SL feedback resource (e.g., the next SL feedback resource). For example, if the second terminal decodes PSSCH1 and obtains a NACK, but the second terminal fails to access PSFCH1 corresponding to PSSCH1, this NACK is deferred to the next PSFCH2, and the NACK of PSFCH1 is transmitted in the reporting information corresponding to PSFCH2. Optionally, the target HARQ-ACK information and target result information are deferred, and the target HARQ-ACK information and target result information corresponding to this SL feedback resource are transmitted on the target uplink resource corresponding to another SL feedback resource (e.g., the next SL feedback resource).

[0122] b) The target result information of the target HARQ-ACK information corresponding to a certain SL feedback resource is deferred and transmitted to the target uplink resource corresponding to another SL feedback resource that has succeeded in the most recent or next listening / LBT / access. Or rather, the target uplink feedback sub-information corresponding to another SL feedback resource that has succeeded in the most recent or next listening / LBT / access indicates / includes the target result information of the target HARQ-ACK information corresponding to this SL feedback resource. Optionally, only the target HARQ-ACK information is deferred, and the target HARQ-ACK information corresponding to this SL feedback resource is transmitted on the target uplink resource corresponding to another SL feedback resource that has succeeded in the most recent or next listening / LBT / access. For example, the second terminal decodes PSSCH1 and obtains a NACK, but the second terminal fails to access PSFCH1 and PSFCH2 corresponding to PSSCH1. However, if the access to PSFCH3 is successful, this NACK is deferred to PSFCH3, and the NACK of PSSCH1 is transmitted in the reporting information corresponding to PSFCH3. Optionally, the target HARQ-ACK information and the target result information are deferred, and the target HARQ-ACK information and the target result information corresponding to this SL feedback resource are transmitted on the target uplink resource corresponding to another SL feedback resource that has succeeded in the most recent or next listening / LBT / access.

[0123] Optionally, the corresponding SL HARQ-ACK information and / or the target HARQ-ACK information in the target uplink feedback sub-information corresponding to this SL feedback resource is set to NACK.

[0124] Optionally, the corresponding target result information in the target uplink feedback sub-information corresponding to this SL feedback resource indicates failure.

[0125] That is, in Method 2, in case of failure, the target uplink link feedback sub-information corresponding to the subsequent SL feedback resource needs to indicate the state of this failed SL feedback resource and the state of this subsequent SL feedback resource itself.

[0126] To better understand this application, the following will be described by means of several specific examples. It should be noted that the COT in each of the following examples may be understood or replaced at the above-mentioned first time, second time or preset time. Also, in the following examples, the target uplink link channel may be understood as the target uplink link resource in the above example, and this target uplink link channel may include PUSCH and / or PUCCH.

[0127] In some embodiments, each PSFCH corresponds to one target uplink link channel.

[0128] As shown in FIG. 3, the first terminal listens and obtains the COT based on the indication / scheduling of the base station. The PSSCH transmission in the COT is associated with two PSFCH occasions, and each PSFCH occasion has one associated target uplink link channel. Here, the PSFCH occasion may be located within the COT.

[0129] As shown in FIG. 4, the first terminal listens and obtains the COT based on the indication / scheduling of the base station. The PSSCH transmission in the COT is associated with three PSFCH occasions, and each PSFCH occasion has one associated target uplink link channel. Here, the PSFCH occasion may be located within and outside the COT.

[0130] In some embodiments, the last PSFCH corresponds to one target uplink link channel.

[0131] As shown in FIG. 5, the first terminal listens and obtains a COT based on the instruction / scheduling of the base station. The PSSCH transmission in the COT is associated with two PSFCH occasions, and the last PSFCH occasion has one associated target uplink link channel. Here, the PSFCH occasion may be located within the COT.

[0132] As shown in FIG. 6, the first terminal listens and obtains a COT based on the instruction / scheduling of the base station. The PSSCH transmission in the COT is associated with three PSFCH occasions, and the last PSFCH occasion has one associated target uplink link channel. Here, the PSFCH occasion may be located within or outside the COT.

[0133] In some embodiments, each PSFCH within the COT corresponds to one target uplink link channel.

[0134] As shown in FIG. 7, the first terminal listens and obtains a COT based on the instruction / scheduling of the base station. The PSSCH transmission in the COT is associated with three PSFCH occasions, and each PSFCH occasion within the COT has one associated target uplink link channel. Here, the three associated PSFCH occasions may be located within or outside the COT.

[0135] In some embodiments, the last PSFCH within the COT corresponds to one target uplink link channel.

[0136] As shown in FIG. 8, the first terminal listens and obtains the COT based on the instructions / scheduling of the base station. The PSSCH transmission in the COT is associated with three PSFCH occasions, and the last PSFCH occasion in the COT all has one associated target uplink channel. Here, the three associated PSFCH occasions may be located inside or outside the COT.

[0137] In some embodiments, the target uplink channel position is related to the LBT response limit.

[0138] For example, when the maximum number of LBT attempts is N, the Nth PSFCH occasion corresponding to the transmission has one corresponding target uplink channel.

[0139] Optionally, for example, when the maximum number of LBT attempts is N, among the PSFCH occasions corresponding to the transmission, one of the PSFCH occasions that has succeeded in LBT is available for the reported target uplink channel.

[0140] As shown in FIGS. 9 and 10, when the maximum number of LBT failures is 4, the fourth PSFCH occasion related to the PSSCH has one corresponding target uplink channel. Thus, regardless of whether these four PSFCH occasions have succeeded or failed in LBT, and regardless of whether the access has succeeded or failed, the position of the target uplink channel is determined. In FIGS. 8 and 9, that the block corresponding to the PSFCH is a dashed line indicates an LBT failure, and that the block corresponding to the PSFCH is a solid line indicates an LBT success.

[0141] In some embodiments, the DCI indicates a preset time, that is, a time range, and determines the target uplink channel based on the end position of the time range.

[0142] For example, the terminal receives control signaling (e.g., DCI), and the DCI indicates one or more resources (the time range corresponding to the resources may be understood as a preset time), or the DCI indicates a preset time, and the preset time has a corresponding target uplink link channel. One method is that the position obtained after offset based on the end position of the preset time is the position of the target uplink link channel.

[0143] In some embodiments, when the DCI indicates a plurality of SL transmission resources and / or SL feedback resources and / or a preset time, each SL transmission resource and / or SL feedback resource and / or a specific time corresponds to a target uplink link channel.

[0144] For example, the terminal receives control signaling (e.g., DCI), and the DCI indicates two sets or two resources (the time ranges corresponding to the two sets or two resources may be understood as a preset time 1 and a preset time 2), or the DCI indicates two preset times, and each specific time has a corresponding target uplink link channel.

[0145] At this time, the position obtained after offset based on the end position of the preset time may be the position of the target uplink link channel.

[0146] Or, among the two preset times, a certain preset time, for example, the last specific time, has a corresponding target uplink link channel. At this time, the position obtained after offset based on the end position of the preset time 2 may be the position of the target uplink link channel.

[0147] In some embodiments, feedback may be performed after defer.

[0148] As shown in FIG. 11, PSSCH0 and PSSCH1 are related to PSFCH1, PSSCH2 and PSSCH3 are related to PSFCH2, and PSSCH4 and PSSCH5 are related to PSFCH3. Here, further, PSFCH1, PSFCH2 and PSFCH3 are all PSFCHs corresponding to PSSCH1 (which may also be called PSFCH candidates, the above SL feedback resources or SL feedback resource candidates), and the PSFCH corresponding to PSSCH1 may be understood to include PSFCH1, PSFCH2 and PSFCH3. The association between PSSCH and PSFCH may be interpreted as that the SL HARQ-ACK corresponding to PSSCH is transmitted earliest on the associated PSFCH, the PSSCH and PSFCH candidates may be that the SL HARQ-ACK corresponding to PSSCH is transmitted on the corresponding PSFCH candidate, and / or the target HARQ-ACK information corresponding to PSSCH may be interpreted as being transmitted on the target uplink channel corresponding to the corresponding PSFCH candidate.

[0149] Here, when the terminal fails to access with PSFCH1 and PSFCH2 and succeeds in accessing with PSFCH3, the PSFCH3 or the target uplink channel corresponding to PSFCH3 has at least the corresponding 6-bit HARQ-ACK information, which indicates the HARQ-ACK states of PSFCH0 to PSFCH5 respectively.

[0150] Furthermore, the target result information corresponding to PSFCH3 may further indicate the listening / LBT / access results of PSFCH1, PSFCH2 and PSFCH3.

[0151] Referring to FIG. 12, the embodiment of the present application further provides a sidelink feedback processing method. As shown in FIG. 12, this sidelink feedback processing method is In step 1201, it includes that the control node transmits first information to the terminal, and the first information is used to determine the target uplink link resource, and the target uplink link resource is used to transmit feedback information corresponding to the sidelink SL transmission resource in the non - permitted frequency band to the control node. Here, the first information includes a first preset transmission resource, a first preset feedback resource, a preset time, and target control signaling. The target control signaling is used to configure, indicate, or schedule at least one of the SL transmission resource, the SL feedback resource, and the preset time. The preset time includes the time range corresponding to the first preset transmission resource. The first preset transmission resource includes at least one SL transmission resource, and the first preset feedback resource includes at least one SL feedback resource.

[0152] Optionally, the first preset transmission resource includes at least one of an arbitrary SL transmission resource, each SL transmission resource, the A - th (A is a positive integer) SL transmission resource, the SL transmission resource located at a preset time - region position, the SL transmission resource corresponding to a preset number, the last SL transmission resource among the SL transmission resources corresponding to the same SL feedback resource, the SL transmission resource corresponding to a preset number of delay times, the corresponding SL transmission resource when the limit corresponding to delay, access, or listen - before - talk LBT is reached, the first SL transmission resource corresponding to successful access, and the first SL transmission resource after successful LBT, where N is a positive integer.

[0153] Optionally, the first preset transmission resource is located within a first time period, and the first time period includes at least one of: an occasion of at least one resource, an occasion of at least one set of resources, a time domain resource, a time domain range, a frequency domain resource, a frequency domain range, a range or resource corresponding to a timer, a range or resource corresponding to a counter, a time corresponding to an obtained usage right, a time before obtaining the usage right, a time corresponding to after successful access, and a time corresponding to failed access.

[0154] Optionally, the preset time is The preset time includes at least one of: an occasion of at least one resource, an occasion of at least one set of resources, a time domain resource, a time domain range, a frequency domain resource, a frequency domain range, a range or resource corresponding to a timer, a range or resource corresponding to a counter, a time corresponding to an obtained usage right, and a time before obtaining the usage right. The preset time includes a first time period, and the first time period is related to the first preset transmission resource. The preset time includes a second time period, and the first time period is related to the first preset feedback resource. The preset time is an SL configuration grant CG period. The preset time satisfies at least one of: having a related target uplink link resource.

[0155] Optionally, the target control signaling has a related target uplink link resource.

[0156] Optionally, the terminal is any one of the first terminal, the second terminal, and the third terminal, where the first terminal is a terminal that transmits or receives on the SL transmission resource, the second terminal is a counterpart that communicates with the first terminal, and the third terminal is a terminal other than the first terminal and the second terminal.

[0157] Optionally, the first terminal is a terminal instructed or scheduled by a control node, and / or the second terminal is a terminal instructed or scheduled by a control node.

[0158] The sidelink feedback processing method according to the embodiments of the present application may have an execution entity that is a sidelink feedback processing device. In the embodiments of the present application, taking the sidelink feedback processing device executing the sidelink feedback processing method as an example, the sidelink feedback processing device according to the embodiments of the present application will be described.

[0159] Referring to FIG. 13, the embodiments of the present application further provide a sidelink feedback processing device. As shown in FIG. 13, this sidelink feedback processing device 1300 includes an acquisition module 1301 for acquiring first information, and a determination module 1302 for determining a target uplink link resource based on the first information. The target uplink link resource is used to transmit feedback information corresponding to sidelink SL transmission resources in a non-permitted frequency band to a control node. Here, the first information includes a first pre-set transmission resource, a first pre-set feedback resource, a pre-set time, and target control signaling. The target control signaling is used to configure, indicate, or schedule at least one of the SL transmission resource, the SL feedback resource, and the pre-set time. The pre-set time includes a time range corresponding to the first pre-set transmission resource. The first pre-set transmission resource includes at least one SL transmission resource. The first pre-set feedback resource includes at least one SL feedback resource.

[0160] Optionally, the first pre-set transmission resource includes at least one of an arbitrary SL transmission resource, each SL transmission resource, the A-th (A is a positive integer) SL transmission resource, an SL transmission resource located at a pre-set time domain position, an SL transmission resource corresponding to a pre-set number, the last SL transmission resource among SL transmission resources corresponding to the same SL feedback resource, an SL transmission resource corresponding to a pre-set number of delay times, the corresponding SL transmission resource when reaching a limit corresponding to delay, access, or listen-before-talk LBT, the first SL transmission resource corresponding to successful access, and the first SL transmission resource after successful LBT.

[0161] Optionally, the first pre-set transmission resource is located within a first time, and the first time includes at least one of an occasion of at least one resource, an occasion of at least one set of resources, a time domain resource, a time domain range, a frequency domain resource, a frequency domain range, a range or resource corresponding to a timer, a range or resource corresponding to a counter, a time corresponding to an obtained usage right, a time before obtaining the usage right, a time corresponding to successful access, and a time corresponding to failed access.

[0162] Optionally, when the first information includes the first preset transmission resource, the determination module 1302 is specifically used to determine, based on the association relationship between each SL transmission resource and the target uplink link resource among the first preset transmission resources, the target uplink link resources corresponding to each SL transmission resource among the first preset transmission resources respectively.

[0163] Optionally, when the first information includes the first preset feedback resource, the determination module 1302 specifically Based on the association relationship between each SL feedback resource and the target uplink link resource among the T SL feedback resources, determine the target uplink link resources corresponding to each SL feedback resource among the T SL feedback resources respectively, where T is a positive integer, the T SL feedback resources are feedback resources indicated, configured, pre-configured or scheduled for the terminal, or feedback resources autonomously determined or monitored by the terminal, the T SL feedback resources include the first preset feedback resource, and It is used to perform either one of determining the target uplink link resource based on the target feedback resource among the first preset feedback resources. Here, the target feedback resource includes any SL feedback resource, each SL feedback resource, the B-th (B is a positive integer) SL feedback resource, the SL feedback resource located at a preset time domain position, the SL feedback resource corresponding to a preset number, the last SL feedback resource among the SL feedback resources corresponding to the same SL feedback resource, the SL feedback resource corresponding to a preset number of delay times, when reaching the limit corresponding to delay, access or LBT, the corresponding SL feedback resource, the first SL feedback resource corresponding to successful access, and at least one of the first SL feedback resource after successful LBT.

[0164] Optionally, there is an SL feedback resource located within a second time in the first preset feedback resource. Here, the second time includes at least one of the following: the occasion of at least one resource, the occasion of at least one set of resources, the time domain resource, the time domain range, the frequency domain resource, the frequency domain range, the range or resource corresponding to a timer, the range or resource corresponding to a counter, the time corresponding to the obtained usage right and the time before obtaining the usage right.

[0165] Optionally, there is an SL feedback resource located outside the second time in the first preset feedback resource, and the SL feedback resource located outside the second time has a related target uplink resource. Here, the second time includes at least one of the following: the occasion of at least one resource, the occasion of at least one set of resources, the time domain resource, the time domain range, the frequency domain resource, the frequency domain range, the range or resource corresponding to a timer, the range or resource corresponding to a counter, the time corresponding to the obtained usage right and the time before obtaining the usage right.

[0166] Optionally, the SL feedback resource located at the second time has a related target uplink resource, or the target feedback resource among the SL feedback resources located at the second time has a related target uplink resource.

[0167] Optionally, the preset time is The preset time includes at least one of the occasion of at least one resource, the occasion of at least one set of resources, the time domain resource, the time domain range, the frequency domain resource, the frequency domain range, the range or resource corresponding to the timer, the range or resource corresponding to the counter, and the time corresponding to the obtained usage right and the time before obtaining the usage right. The preset time includes a first time, and the first time is related to the first preset transmission resource. The preset time includes a second time, and the first time is related to the first preset feedback resource. The preset time is the SL configuration grant CG period. The preset time satisfies at least one of having a related target uplink resource.

[0168] Optionally, the target control signaling has a related target uplink resource.

[0169] Optionally, the determination module 1302 specifically Performs a position offset based on the first position or the second position to determine the position of the target uplink resource. Determines the position of the target uplink resource based on the uplink resource position related to the first position, and / or the terminal determines the format of the target uplink resource based on the uplink resource format related to the first position. Determine the position of the target uplink resource based on the preset time or the uplink resource position related to the target control signaling, and / or the terminal is used to perform at least one of determining the format of the target uplink resource based on the preset time or the uplink resource format related to the target control signaling. Here, the first position is the position of the first preset transmission resource, and the second position is the position of the first preset feedback resource.

[0170] Optionally, the offset amount of the position offset is related to at least one of access interval, number of accesses, access time length, access type, LBT interval, number of LBTs, LBT time length, and LBT type.

[0171] Optionally, the sidelink feedback processing device 1300 Further includes a second transmission module for transmitting second information with a target uplink resource that satisfies a first preset condition, where the second information includes feedback information of the SL transmission resource. Here, the first preset condition is The SL transmission resource corresponding to the target uplink resource is successfully accessed by at least one terminal, and succeeds or can be used in LBT; The SL feedback resource corresponding to the target uplink resource is successfully accessed by at least one terminal, and succeeds or can be used in LBT; It is the last uplink resource among the determined multiple target uplink resources; It is the target uplink resource corresponding to the SL feedback resource when reaching the limit corresponding to delay, access, or LBT; It is the target uplink resource corresponding to the SL transmission resource when reaching the limit corresponding to delay, access, or LBT. Including at least one of corresponding uplink link resources when reaching corresponding restrictions for delay, access or LBT.

[0172] Optionally, the obtaining module 1301 is specifically used to receive the first information from the control node.

[0173] Optionally, the terminal is any one of a first terminal, a second terminal and a third terminal, where the first terminal is a terminal that transmits or receives on the SL transmission resource, the second terminal is a counterpart that communicates with the first terminal, and the third terminal is a terminal other than the first terminal and the second terminal.

[0174] Optionally, the first terminal is a terminal instructed or scheduled by a control node, and / or the second terminal is a terminal instructed or scheduled by a control node.

[0175] Optionally, the terminal is the second terminal, and the sidelink feedback processing device Further includes an execution module for performing a first behavior corresponding to at least two SL feedback resources and performing a first operation based on the result of the first behavior corresponding to the SL feedback resource. The first operation is When the first behavior corresponding to the first SL feedback resource is successful, not performing the first behavior corresponding to the subsequent SL feedback resource of the first SL feedback resource; When the first behavior corresponding to the first SL feedback resource is successful, determining a target uplink link feedback information corresponding to the first SL feedback resource and / or a target uplink link resource for reporting the target uplink link feedback information based on the first SL feedback resource; If the first behavior corresponding to the second SL feedback resource fails, at least one of continuing to execute the first behavior corresponding to the subsequent SL feedback resource of the second SL feedback resource is satisfied, Here, the first behavior includes listening, LBT or access.

[0176] Optionally, the target uplink link feedback information includes target uplink link feedback sub-information corresponding to at least some of the first preset feedback resources, and the target uplink link feedback sub-information is hybrid automatic repeat request acknowledgment HARQ-ACK information, and includes at least one of the information of the first behavior.

[0177] Optionally, the target uplink link feedback sub-information corresponding to the first SL feedback resource is the HARQ-ACK information, and includes either one of the HARQ-ACK information and the information of the first behavior.

[0178] Optionally, the target uplink link feedback sub-information corresponding to the second SL feedback resource is the information of the first behavior, and includes either one of the HARQ-ACK information and the information of the first behavior.

[0179] Optionally, the first preset feedback resource includes the first SL feedback resource.

[0180] Optionally, the first preset feedback resource further includes at least one of the second SL feedback resources, and the target uplink link feedback sub-information corresponding to the second SL feedback resource is transmitted on the target uplink link resource corresponding to the first SL feedback resource.

[0181] Referring to FIG. 14, the embodiment of the present application further provides a sidelink feedback processing apparatus. As shown in FIG. 14, this sidelink feedback processing apparatus 1400 includes a first transmission module 1401 for transmitting first information to a terminal, where the first information is used to determine a target uplink link resource, and the target uplink link resource is used to transmit feedback information corresponding to sidelink (SL) transmission resources in a non-permitted frequency band to a control node. Here, the first information includes a first preset transmission resource, a first preset feedback resource, a preset time, and target control signaling. The target control signaling is used to configure, indicate, or schedule at least one of the SL transmission resource, the SL feedback resource, and the preset time. The preset time includes a time range corresponding to the first preset transmission resource. The first preset transmission resource includes at least one SL transmission resource. The first preset feedback resource includes at least one SL feedback resource.

[0182] Optionally, the first preset transmission resource includes at least one of an arbitrary SL transmission resource, each SL transmission resource, the A-th (A is a positive integer) SL transmission resource, an SL transmission resource located at a preset time region position, an SL transmission resource corresponding to a preset number, the last SL transmission resource among SL transmission resources corresponding to the same SL feedback resource, an SL transmission resource corresponding to a preset number of delay times, a corresponding SL transmission resource when reaching a limit corresponding to delay, access, or listen before talk (LBT), the first SL transmission resource corresponding to successful access, and the first SL transmission resource after successful LBT.

[0183] Optionally, the first preset transmission resource is located within a first time period, and the first time period includes at least one of: an occasion of at least one resource, an occasion of at least one set of resources, a time domain resource, a time domain range, a frequency domain resource, a frequency domain range, a range or resource corresponding to a timer, a range or resource corresponding to a counter, a time corresponding to an acquired usage right, a time before acquiring the usage right, a time corresponding to after successful access, and a time corresponding to failed access.

[0184] Optionally, the preset time is The preset time includes at least one of: an occasion of at least one resource, an occasion of at least one set of resources, a time domain resource, a time domain range, a frequency domain resource, a frequency domain range, a range or resource corresponding to a timer, a range or resource corresponding to a counter, a time corresponding to an acquired usage right, and a time before acquiring the usage right. The preset time includes a first time period, and the first time period is related to the first preset transmission resource. The preset time includes a second time period, and the first time period is related to the first preset feedback resource. The preset time is an SL configuration grant CG period. The preset time satisfies at least one of: having a related target uplink link resource.

[0185] Optionally, the target control signaling has a related target uplink link resource.

[0186] Optionally, the terminal is any one of a first terminal, a second terminal, and a third terminal, where the first terminal is a terminal that transmits or receives on the SL transmission resource, the second terminal is a peer that communicates with the first terminal, and the third terminal is a terminal other than the first terminal and the second terminal.

[0187] Optionally, the first terminal is a terminal instructed or scheduled by a control node, and / or the second terminal is a terminal instructed or scheduled by a control node.

[0188] The sidelink feedback processing apparatus in the embodiments of the present application may be an electronic device, such as an electronic device having an operating system, or a component in an electronic device, such as an integrated circuit or a chip. This electronic device may be a terminal or a device other than a terminal. Exemplarily, the terminal may include, but is not limited to, the types of terminal 11 listed above. Other devices may be a server, a Network Attached Storage (NAS), etc., and the embodiments of the present application are not specifically limited.

[0189] The sidelink feedback processing apparatus according to the embodiments of the present application realizes each process realized by the method embodiments in FIGS. 2 to 12 and can achieve the same technical effects. To avoid repetition of the description, it will not be described further here.

[0190] Optionally, as shown in FIG. 15, the embodiments of the present application further provide a communication device 1500, which includes a processor 1501 and a memory 1502, and a program or instruction executable on the processor 1501 is stored in the memory 1502. When this program or instruction is executed by the processor 1501, each step of the sidelink feedback processing method embodiment is realized, and the same technical effects can be achieved. To avoid repetition of the description, it will not be described further here.

[0191] An embodiment of the present application further provides a terminal including a processor and a communication interface. The communication interface is used to obtain first information, and the processor is used to determine a target uplink link resource based on the first information. The target uplink link resource is used to transmit feedback information corresponding to a sidelink SL transmission resource in a non-permitted frequency band to a control node. Here, the first information includes a first preset transmission resource, a first preset feedback resource, a preset time, and target control signaling. The target control signaling is used to configure, indicate, or schedule at least one of the SL transmission resource, the SL feedback resource, and the preset time. The preset time includes a time range corresponding to the first preset transmission resource. The first preset transmission resource includes at least one SL transmission resource, and the first preset feedback resource includes at least one SL feedback resource. Or, when the terminal is a control node, the communication interface is used to transmit first information to the terminal, the first information is used to determine target uplink link resources, and the target uplink link resources are used to transmit feedback information corresponding to sidelink (SL) transmission resources in a non-permitted frequency band to the control node. Here, the first information includes a first pre-set transmission resource, a first pre-set feedback resource, a pre-set time, and target control signaling. The target control signaling is used to configure, indicate, or schedule at least one of the SL transmission resource, the SL feedback resource, and the pre-set time. The pre-set time includes a time range corresponding to the first pre-set transmission resource. The first pre-set transmission resource includes at least one SL transmission resource. The first pre-set feedback resource includes at least one SL feedback resource.

[0192] This terminal embodiment corresponds to the above terminal-side method embodiment. Each implementation process and realization method of the above method embodiment may be applied to this terminal embodiment, and similar technical effects can be achieved. FIG. 16 is a schematic hardware structure diagram for realizing the terminal according to the embodiment of the present application.

[0193] This terminal 1600 includes at least some of, but is not limited to, members such as a radio frequency unit 1601, a network module 1602, an audio output unit 1603, an input unit 1604, a sensor 1605, a display unit 1606, a user input unit 1607, an interface unit 1608, a memory 1609, and a processor 1610.

[0194] As would be understood by those skilled in the art, the terminal 1600 may further include a power source (e.g., a battery) for supplying power to each component. The power source may be logically connected to the processor 1610 by a power management system, whereby functions such as charge and discharge management and power consumption management can be realized by the power management system. The terminal structure shown in FIG. 16 does not constitute a limitation on the terminal. The terminal may include more or fewer components than those shown, or a combination of some components, or a different arrangement of components, which will not be further described herein.

[0195] It should be understood that in the embodiments of the present application, the input unit 1604 may include a graphics processing unit (GPU) 16041 and a microphone 16042. The graphics processing unit 16041 processes the image data of a still image or video obtained by an image capture device (e.g., a camera) in a video capture mode or an image capture mode. The display unit 1606 may include a display panel 16061, and the display panel 16061 may be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 1607 includes at least one of a touch panel 16071 and other input devices 16072. The touch panel 16071 is also called a touch screen. The touch panel 16071 may include two parts: a touch detection device and a touch controller. The other input devices 16072 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 further described herein.

[0196] In an embodiment of the present application, after receiving downlink data from a network-side device, the radio frequency unit 1601 can transmit it to the processor 1610 for processing. Further, the radio frequency unit 1601 can transmit uplink data to the network-side device. Generally, the radio frequency unit 1601 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0197] Memory 1609 may be used to store software programs or instructions, and various types of data. Memory 1609 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data. Here, the first storage area can store an operating system, application programs or instructions required for at least one function (for example, a voice playback function, an image playback function, etc.). Also, Memory 1609 may include volatile memory or non-volatile memory, or Memory 1609 may include both volatile and non-volatile memory. Here, non-volatile memory may be a Read-Only Memory (ROM), Programmable ROM (PROM), Erasable PROM (EPROM), Electrically Erasable PROM (EEPROM), or flash memory. Volatile memory may be Random Access Memory (RAM), Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synch link DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The Memory 1609 in the embodiments of this application includes these and any other suitable types of memory, but is not limited thereto.

[0198] Processor 1610 may include one or more processing units. Optionally, processor 1610 integrates an application processor and a modem processor. Here, the application processor mainly processes operations related to the operating system, user interface, application programs, etc., and the modem processor mainly processes wireless communication signals, for example, a baseband processor. As can be understood, the above modem processor may not be integrated into processor 1610.

[0199] The radio frequency unit 1601 is used to obtain first information. The processor 1610 is used to determine a target uplink link resource based on the first information. The target uplink link resource is used to transmit feedback information corresponding to a sidelink SL transmission resource in a non-permitted frequency band to a control node. Here, the first information includes a first preset transmission resource, a first preset feedback resource, a preset time, and target control signaling. The target control signaling is used to configure, indicate, or schedule at least one of the SL transmission resource, the SL feedback resource, and the preset time. The preset time includes a time range corresponding to the first preset transmission resource. The first preset transmission resource includes at least one SL transmission resource. The first preset feedback resource includes at least one SL feedback resource. Or, when the terminal is a control node, the radio frequency unit 1601 is used to transmit first information to the terminal. The first information is used to determine a target uplink link resource. The target uplink link resource is used to transmit feedback information corresponding to a sidelink SL transmission resource in a non-permitted frequency band to a control node. Here, the first information includes a first preset transmission resource, a first preset feedback resource, a preset time, and target control signaling. The target control signaling is used to configure, indicate, or schedule at least one of the SL transmission resource, the SL feedback resource, and the preset time. The preset time includes a time range corresponding to the first preset transmission resource. The first preset transmission resource includes at least one SL transmission resource. The first preset feedback resource includes at least one SL feedback resource.

[0200] Embodiments of this application further provide a network-side device including a processor and a communication interface. The communication interface is used to transmit first information to a terminal. The first information is used to determine a target uplink resource. The target uplink resource is used to transmit feedback information corresponding to an SL transmission resource in a non-authorized frequency band to a control node. Here, the first information includes a first preset transmission resource, a first preset feedback resource, a preset time, and target control signaling. The target control signaling is used to configure, indicate, or schedule at least one of the SL transmission resource, the SL feedback resource, and the preset time. The preset time includes a time range corresponding to the first preset transmission resource. The first preset transmission resource includes at least one SL transmission resource. The first preset feedback resource includes at least one SL feedback resource. Embodiments of this network-side device correspond to embodiments of the above network-side device method. Each implementation process and implementation manner of the embodiments of the above method can be applied to embodiments of this network-side device and can achieve the same technical effect.

[0201] Specifically, an embodiment of the present application further provides a network-side device. As shown in FIG. 17, this network-side device 1700 includes an antenna 1701, a radio frequency device 1702, a baseband device 1703, a processor 1704, and a memory 1705. The antenna 1701 is connected to the radio frequency device 1702. In the uplink direction, the radio frequency device 1702 receives information via the antenna 1701 and transmits the received information to the baseband device 1703 for processing. In the downlink direction, the baseband device 1703 processes the information to be transmitted, transmits it to the radio frequency device 1702, and the radio frequency device 1702 processes the received information and then sends it out via the antenna 1701.

[0202] In the above embodiments, the method executed by the network-side device may be implemented in the baseband device 1703, and this baseband device 1703 includes a baseband processor.

[0203] The baseband device 1703 may include at least one baseband board, and a plurality of chips are installed on this baseband board. As shown in FIG. 17, one of the chips is, for example, a baseband processor, which is connected to the memory 1705 via a bus interface, calls a program in the memory 1705, and executes the network device operations shown in the embodiments of the above method.

[0204] This network-side device may further include a network interface 1706, and this interface is, for example, a common public radio interface (CPRI).

[0205] Specifically, the network-side device 1700 according to an embodiment of the present invention further includes instructions or programs stored in the memory 1705 and executable on the processor 1704. The processor 1704 calls the instructions or programs in the memory 1705, executes the methods executed by the respective modules shown in FIG. 13, and can achieve the same technical effects. To avoid repetition of the description, it will not be further described herein.

[0206] Embodiments of the present application further provide a readable storage medium, in which programs or instructions are stored. When these programs or instructions are executed by a processor, each process of the embodiment of the above-mentioned sidelink feedback processing method is realized, and the same technical effects can be achieved. To avoid repetition of the description, it will not be further described herein.

[0207] Here, the processor is the processor in the terminal in the above embodiment. The readable storage medium includes computer-readable storage media such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disk.

[0208] Embodiments of the present application provide a chip including a processor and a communication interface. The communication interface is coupled to the processor. The processor runs programs or instructions and is used to realize each process of the embodiment of the above-mentioned sidelink feedback processing method, and the same technical effects can be achieved. To avoid repetition of the description, it will not be further described herein.

[0209] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-level chip, a system chip, a chip system, or a system-on-chip, etc.

[0210] Embodiments of the present application further provide a computer program / program product, where the computer program / program product is stored in a storage medium, and the computer program / program product is executed by at least one processor to implement each process of the embodiment of the above side-link feedback processing method and achieve the same technical effect. To avoid repetition of the description, it will not be described further here.

[0211] Embodiments of the present application further provide a communication system including a terminal and a control node. The terminal is used to execute each process of FIG. 2 and the embodiments of each method on the terminal side, and the control node is used to execute each process of FIG. 11 and the embodiments of each method on the control node side, and the same technical effect can be achieved. To avoid repetition of the description, it will not be described further here.

[0212] It should be noted that in this specification, the term "including", "being included" or any other deformation thereof is intended to cover non-exclusive "including", so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or elements specific to such a process, method, article or device. In the case of no further limitation, for an element limited by the phrase "including one...", it is not excluded that there are other same elements in the process, method, article or device including this element. It should be pointed out that the scope of the method and device in the embodiments of the present application is not limited to executing functions in the order shown or discussed, but may include executing functions in a basically simultaneous manner or in a reverse order based on the related functions, executing a method described in a different procedure from that described, and adding, omitting or combining various steps. Also, features described with reference to some examples can be combined in other examples.

[0213] As will be clearly understood by those skilled in the art from the description of the above embodiments, the method of the above embodiments can be realized by means of software and the necessary general-purpose hardware platform. Of course, it may also be realized by hardware, but in many cases, the former is a more preferred embodiment. Based on such an understanding, the technical solution of the present application may, in essence, or the part that contributes to the prior art, be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for causing a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the embodiments of the present application.

[0214] The above has described 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 restrictive. Those skilled in the art can make many forms without departing from the spirit of the present application and the scope protected by the claims, and all belong to the protection scope of the present application.

Claims

1. A sidelink feedback processing method, comprising: a terminal obtaining first information; and the terminal determining a target uplink link resource based on the first information, where the target uplink link resource is used to transmit feedback information corresponding to a sidelink (SL) transmission resource in a non-permitted frequency band to a control node. The first information includes a first preset transmission resource, a first preset feedback resource, a preset time, and target control signaling. The target control signaling is used to configure, indicate, or schedule at least one of the SL transmission resource, the SL feedback resource, and the preset time. The preset time includes a time range corresponding to the first preset transmission resource. The first preset transmission resource includes at least one SL transmission resource. The first preset feedback resource includes at least one SL feedback resource. A sidelink feedback processing method.

2. The first preset transmission resource includes at least one of an arbitrary SL transmission resource, each SL transmission resource, the A-th (A is a positive integer) SL transmission resource, an SL transmission resource located at a preset time region position, an SL transmission resource corresponding to a preset number, the last SL transmission resource among SL transmission resources corresponding to the same SL feedback resource, an SL transmission resource corresponding to a preset number of delay times, a corresponding SL transmission resource when a limit corresponding to delay, access, or listen before talk (LBT) is reached, the first SL transmission resource corresponding to successful access, and the first SL transmission resource after successful LBT. The sidelink feedback processing method according to Claim 1.

3. The first preset transmission resource is located within a first time period, and the first time period includes at least one of: an occasion of at least one resource, an occasion of at least one set of resources, a time domain resource, a time domain range, a frequency domain resource, a frequency domain range, a range or resource corresponding to a timer, a range or resource corresponding to a counter, a time corresponding to an obtained usage right, a time before obtaining the usage right, a time corresponding to after successful access, and a time corresponding to failed access. The sidelink feedback processing method according to claim 1.

4. When the first information includes the first preset transmission resource, for the terminal to determine a target uplink link resource based on the first information, The terminal determines, based on the association relationship between each SL transmission resource among the first preset transmission resources and the target uplink link resource, a target uplink link resource corresponding to each SL transmission resource among the first preset transmission resources. The sidelink feedback processing method according to claim 1.

5. When the first information includes the first preset feedback resource, for the terminal to determine a target uplink link resource based on the first information, The terminal determines, based on the association relationship between each SL feedback resource among T SL feedback resources and the target uplink link resource, a target uplink link resource corresponding to each SL feedback resource among the T SL feedback resources, where T is a positive integer, and the T SL feedback resources are feedback resources instructed, configured, pre-configured, or scheduled for the terminal, or feedback resources autonomously determined or monitored by the terminal, and the T SL feedback resources include the first preset feedback resource, The terminal includes either determining a target uplink link resource based on a target feedback resource among the first preset feedback resources. The target feedback resource includes any SL feedback resource, each SL feedback resource, the B-th (B is a positive integer) SL feedback resource, an SL feedback resource located at a preset time domain position, an SL feedback resource corresponding to a preset number, the last SL feedback resource among the SL feedback resources corresponding to the same SL feedback resource, an SL feedback resource corresponding to a preset number of delay times, the corresponding SL feedback resource when a limit corresponding to delay, access, or LBT is reached, at least one of the first SL feedback resource corresponding to successful access and the first SL feedback resource after successful LBT. The sidelink feedback processing method according to claim 1.

6. There is an SL feedback resource located within a second time in the first preset feedback resource, The second time includes at least one of an occasion of at least one resource, an occasion of at least one set of resources, a time domain resource, a time domain range, a frequency domain resource, a frequency domain range, a range or resource corresponding to a timer, a range or resource corresponding to a counter, a time corresponding to the obtained usage right, and a time before obtaining the usage right. The sidelink feedback processing method according to claim 5.

7. There is an SL feedback resource located outside the second time in the first preset feedback resource, and the SL feedback resource located outside the second time has a related target uplink resource, The second time includes at least one of an occasion of at least one resource, an occasion of at least one set of resources, a time domain resource, a time domain range, a frequency domain resource, a frequency domain range, a range or resource corresponding to a timer, a range or resource corresponding to a counter, a time corresponding to the obtained usage right, and a time before obtaining the usage right. The sidelink feedback processing method according to claim 5.

8. The SL feedback resource located at the second time has a related target uplink resource, or the target feedback resource among the SL feedback resources located at the second time has a related target uplink resource. The side link feedback processing method according to claim 6.

9. The preset time is The preset time includes at least one of the occasion of at least one resource, the occasion of at least one set of resources, the time domain resource, the time domain range, the frequency domain resource, the frequency domain range, the range or resource corresponding to the timer, the range or resource corresponding to the counter, and the time corresponding to the acquired usage right and the time before acquiring the usage right. The preset time includes a first time, and the first time is related to the first preset transmission resource. The preset time includes a second time, and the first time is related to the first preset feedback resource. The preset time is the SL configuration grant CG period. The preset time satisfies at least one of having a related target uplink resource. The side link feedback processing method according to claim 1.

10. The target control signaling has a related target uplink resource. The side link feedback processing method according to claim 1.

11. The terminal determines the target uplink resource based on the first information, which The terminal performs a position offset based on the first position or the second position to determine the position of the target uplink resource. The terminal determines the position of the target uplink resource based on the uplink resource position related to the first position, and / or the terminal determines the format of the target uplink resource based on the uplink resource format related to the first position. The terminal determines the position of the target uplink resource based on the preset time or the uplink resource position related to the target control signaling, and / or the terminal determines the format of the target uplink resource based on the preset time or the uplink resource format related to the target control signaling, including at least one of the above. The side link feedback processing method according to claim 1, wherein the first position is the position of the first preset transmission resource, and the second position is the position of the first preset feedback resource.

12. The side link feedback processing method according to claim 11, wherein the offset amount of the position offset is related to at least one of access interval, number of accesses, access time duration, access type, LBT interval, number of LBTs, LBT time duration, and LBT type.

13. The side link feedback processing method includes The terminal further transmits second information on a target uplink resource that satisfies a first preset condition, and the second information includes feedback information on the SL transmission resource. The first preset condition is The SL transmission resource corresponding to the target uplink resource is successfully accessed by at least one terminal and succeeds or can be used in LBT. The SL feedback resource corresponding to the target uplink resource is successfully accessed by at least one terminal and succeeds or can be used in LBT. It is the last uplink resource among the determined multiple target uplink resources. It is the target uplink resource corresponding to the SL feedback resource when the limit corresponding to delay, access, or LBT is reached. It is the target uplink resource corresponding to the SL transmission resource when the limit corresponding to delay, access, or LBT is reached. The side link feedback processing method according to claim 1, including at least one of the above, which is the target uplink resource corresponding to the corresponding target uplink resource when the limit corresponding to delay, access, or LBT is reached.

14. The terminal obtaining the first information is The sidelink feedback processing method according to claim 1, including receiving, by the terminal, the first information from a control node.

15. The terminal is any one of a first terminal, a second terminal, and a third terminal. The first terminal is a terminal that transmits or receives on the SL transmission resource. The second terminal is a counterpart that communicates with the first terminal. The third terminal is a terminal other than the first terminal and the second terminal. The sidelink feedback processing method according to claim 1.

16. The first terminal is a terminal instructed or scheduled by a control node, and / or the second terminal is a terminal instructed or scheduled by a control node. The sidelink feedback processing method according to claim 15.

17. The terminal is the second terminal. The sidelink feedback processing method includes: The terminal executes a first behavior corresponding to at least two SL feedback resources. The terminal further includes executing a first operation based on a result of the first behavior corresponding to the SL feedback resource. The first operation includes: When the first behavior corresponding to the first SL feedback resource is successful, not executing the first behavior corresponding to a subsequent SL feedback resource of the first SL feedback resource. When the first behavior corresponding to the first SL feedback resource is successful, determining a target uplink link feedback information corresponding to the first SL feedback resource and / or a target uplink link resource for reporting the target uplink link feedback information. When the first behavior corresponding to the second SL feedback resource fails, continuing to execute the first behavior corresponding to a subsequent SL feedback resource of the second SL feedback resource. At least one of the above is satisfied. The first behavior includes listening, LBT, or access. The sidelink feedback processing method according to claim 15.

18. The target uplink link feedback information includes target uplink link feedback sub-information corresponding to at least some of the first preset feedback resources. The target uplink link feedback sub-information includes: Hybrid automatic repeat request acknowledgment HARQ-ACK information, and The sidelink feedback processing method according to claim 17, comprising at least one of the information on the first behavior.

19. The target uplink link feedback sub-information corresponding to the first SL feedback resource is The HARQ-ACK information, and The sidelink feedback processing method according to claim 18, comprising any one of the HARQ-ACK information and the information on the first behavior.

20. The target uplink link feedback sub-information corresponding to the second SL feedback resource is The information on the first behavior, and The sidelink feedback processing method according to claim 18, comprising any one of the HARQ-ACK information and the information on the first behavior.

21. The sidelink feedback processing method according to claim 17, wherein the first preset feedback resource includes the first SL feedback resource.

22. The first preset feedback resource further includes at least one of the second SL feedback resources, and the target uplink link feedback sub-information corresponding to the second SL feedback resource is transmitted on the target uplink link resource corresponding to the first SL feedback resource. The sidelink feedback processing method according to claim 21.

23. A sidelink feedback processing method, comprising: A control node transmitting first information to a terminal, the first information being used to determine a target uplink link resource, the target uplink link resource being used to transmit feedback information corresponding to a sidelink SL transmission resource in a non-permitted frequency band to the control node. The first information includes a first pre-set transmission resource, a first pre-set feedback resource, a pre-set time, and target control signaling. The target control signaling is used to configure, indicate, or schedule at least one of the SL transmission resource, the SL feedback resource, and the pre-set time. The pre-set time includes a time range corresponding to the first pre-set transmission resource. The first pre-set transmission resource includes at least one SL transmission resource. The first pre-set feedback resource includes at least one SL feedback resource. A sidelink feedback processing method.

24. The first pre-set transmission resource includes at least one of an arbitrary SL transmission resource, each SL transmission resource, the A-th (A is a positive integer) SL transmission resource, an SL transmission resource located at a pre-set time domain position, an SL transmission resource corresponding to a pre-set number, the last SL transmission resource among SL transmission resources corresponding to the same SL feedback resource, an SL transmission resource corresponding to a pre-set number of delay times, a corresponding SL transmission resource when a limit corresponding to delay, access, or listen before talk LBT is reached, the first SL transmission resource corresponding to successful access, and the first SL transmission resource after successful LBT, according to the sidelink feedback processing method described in Claim 23.

25. The first pre-set transmission resource is located within a first time. The first time includes at least one of an occasion of at least one resource, an occasion of at least one set of resources, a time domain resource, a time domain range, a frequency domain resource, a frequency domain range, a range or resource corresponding to a timer, a range or resource corresponding to a counter, a time corresponding to an obtained usage right, a time before obtaining the usage right, a time corresponding to after successful access, and a time corresponding to failed access, according to the sidelink feedback processing method described in Claim 23.

26. The pre-set time is The preset time includes at least one of the following: the occasion of at least one resource, the occasion of at least one set of resources, a time-domain resource, a time-domain range, a frequency-domain resource, a frequency-domain range, a range or resource corresponding to a timer, a range or resource corresponding to a counter, the time corresponding to the acquired usage right, and the time before acquiring the usage right. The preset time includes a first time, and the first time is related to the first preset transmission resource. The preset time includes a second time, and the first time is related to the first preset feedback resource. The preset time is the SL configuration grant CG period. The side-link feedback processing method according to claim 23, wherein the preset time satisfies at least one of the following: having a related target uplink resource.

27. The side-link feedback processing method according to claim 23, wherein the target control signaling has a related target uplink resource.

28. The terminal is any one of a first terminal, a second terminal, and a third terminal. The first terminal is a terminal that transmits or receives on the SL transmission resource. The second terminal is the counterpart that communicates with the first terminal. The third terminal is a terminal other than the first terminal and the second terminal. The side-link feedback processing method according to claim 23.

29. The side-link feedback processing method according to claim 28, wherein the first terminal is a terminal instructed or scheduled by a control node, and / or the second terminal is a terminal instructed or scheduled by a control node.

30. A side-link feedback processing apparatus, An acquisition module for acquiring first information, A determination module for determining a target uplink resource based on the first information. The target uplink resource is used to transmit feedback information corresponding to a side-link SL transmission resource in a non-permitted frequency band by a control node. The determination module is included. The first information includes a first pre-set transmission resource, a first pre-set feedback resource, a pre-set time, and target control signaling. The target control signaling is used to configure, indicate, or schedule at least one of the SL transmission resource, the SL feedback resource, and the pre-set time. The pre-set time includes a time range corresponding to the first pre-set transmission resource. The first pre-set transmission resource includes at least one SL transmission resource. The first pre-set feedback resource includes at least one SL feedback resource. A sidelink feedback processing device.

31. A sidelink feedback processing device, comprising: a first transmission module for transmitting first information to a terminal, the first information being used to determine a target uplink resource, the target uplink resource being used to transmit feedback information corresponding to a sidelink SL transmission resource in a non-authorized frequency band to a control node; The first information includes a first pre-set transmission resource, a first pre-set feedback resource, a pre-set time, and target control signaling. The target control signaling is used to configure, indicate, or schedule at least one of the SL transmission resource, the SL feedback resource, and the pre-set time. The pre-set time includes a time range corresponding to the first pre-set transmission resource. The first pre-set transmission resource includes at least one SL transmission resource. The first pre-set feedback resource includes at least one SL feedback resource. A sidelink feedback processing device.

32. A terminal comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the steps of the sidelink feedback processing method according to any one of claims 1 to 29 being realized when the program or instructions are executed by the processor.

33. A network-side device including a processor and a memory, the memory storing a program or instructions that can run on the processor, and when the program or instructions are executed by the processor, realizing the steps of the sidelink feedback processing method according to any one of claims 23 to 29.

34. A readable storage medium storing a program or instructions, and when the program or instructions are executed by a processor, realizing the steps of the sidelink feedback processing method according to any one of claims 1 to 29.

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