Psfch resource determination method, arrangement method, and communication device

Abstract

To provide a PSFCH resource determination method, an arrangement method, and a communication device.SOLUTION: Embodiments provide a PSFCH resource determination method, an arrangement method, and a communication device, including a step of determining a target PSFCH resource according to acquired PSFCH resource arrangement information, in which a target includes at least one of a carrier, a bandwidth part BWP, and a resource pool. The PSFCH resource includes at least one of a PSFCH transmission resource and a PSFCH reception resource, and a target operation is performed on feedback information on the PSFCH resource, the target operation including at least one of transmission operation and reception operation.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application claims priority from Chinese Patent Application No. 202010251731.9, filed in China on April 1, 2020, the entire contents of which are incorporated herein by reference.

[0002] The embodiments of the present invention relate to the technical field of communications, and in particular to a method for determining and arranging a PSFCH resource and a communications device. [Background technology]

[0003] In Long Term Evolution (LTE), the sidelink only supports broadcast services and does not have a Hybrid Automatic Repeat Request (HARQ) feedback mechanism. Since New Radio (NR) introduces unicast and multicast transmission, when unicast and some multicast services are transmitted, the receiver may be required to send HARQ feedback to the sender. The HARQ feedback is transmitted on the Physical Sidelink Feedback Channel (PSFCH).

[0004] The NR resource pool can contain physical sidelink feedback channel (PSFCH) resources for transmitting feedback information from the receiving side to the transmitting side. However, no solution has been proposed yet for determining the PSFCH resources in the resource pool. Summary of the Invention [Problem to be solved by the invention]

[0005] To solve the problem of determining a PSFCH resource in a resource pool, the embodiments of the present invention provide a PSFCH resource determination method, a configuration method, and a communication device. [Means for solving the problem]

[0006] In order to solve the above problems, the present invention is realized as follows.

[0007] In a first aspect, an embodiment of the present invention provides a method for determining a physical sidelink feedback channel (PSFCH) resource applied to a first communication device, comprising: determining a target PSFCH resource according to the obtained PSFCH resource allocation information, where the target includes at least one of a carrier, a bandwidth portion BWP, and a resource pool, and the PSFCH resource includes at least one of a PSFCH transmission resource and a PSFCH reception resource; performing a target operation on the feedback information on the PSFCH resource, the target operation including at least one of a receive operation and a transmit operation; A method for determining a physical sidelink feedback channel (PSFCH) resource is provided, including:

[0008] In a second aspect, an embodiment of the present invention provides a PSFCH resource configuration method applied to a second communication device, comprising: Provided is a method for allocating PSFCH resources, the method including: sending PSFCH resource allocation information to a first communication device; the PSFCH resource allocation information is for determining and allocating target PSFCH resources; the target includes at least one of a carrier, a bandwidth portion BWP, and a resource pool; and the PSFCH resources include at least one of PSFCH transmission resources and PSFCH reception resources.

[0009] In a third aspect, an embodiment of the present invention provides a communications device, the communications device being a first communications device, comprising: a first determination module for determining a target PSFCH resource according to the acquired PSFCH resource allocation information, where the target object includes at least one of a carrier, a bandwidth portion BWP, and a resource pool, and the PSFCH resource includes at least one of a PSFCH transmission resource and a PSFCH reception resource; a transceiver module for performing a target operation on feedback information on the PSFCH resource, the target operation including at least one of a receive operation and a transmit operation; The present invention further provides a communication device comprising:

[0010] In a fourth aspect, an embodiment of the present invention provides a communications device that is a second communications device, comprising: The present invention further provides a communication device, the communication device including: a first sending module for sending PSFCH resource allocation information to a first communication device, the PSFCH resource allocation information being for determining and allocating PSFCH resources of a target object, the target object including at least one of a carrier, a bandwidth portion BWP, and a resource pool, and the PSFCH resources including at least one of PSFCH transmission resources and PSFCH reception resources.

[0011] In a fifth aspect, embodiments of the present invention further provide a communications device including a processor, a memory, and a computer program stored in the memory and executable on the processor, the computer program being configured to perform steps of the above-mentioned method for determining physical sidelink feedback channel (PSFCH) resources or to perform steps of the above-mentioned method for configuring PSFCH resources when executed by the processor.

[0012] In a sixth aspect, embodiments of the present invention further provide a computer-readable storage medium storing a computer program, the computer program being configured to implement the steps of the above-mentioned method for determining physical sidelink feedback channel (PSFCH) resources or the steps of the above-mentioned method for configuring PSFCH resources when executed by a processor.

[0013] In a seventh aspect, embodiments of the present invention further provide a computer software product stored on a non-volatile storage medium, the computer software product being arranged, when executed by at least one processor, to implement the steps of the above-mentioned method for determining physical sidelink feedback channel (PSFCH) resources or the steps of the above-mentioned method for configuring PSFCH resources. [Effects of the Invention]

[0014] In an embodiment of the present invention, the first communication device determines a target PSFCH resource according to the acquired PSFCH resource allocation information, where the target includes at least one of a carrier, a bandwidth portion BWP, and a resource pool, where the PSFCH resource includes at least one of a PSFCH transmission resource and a PSFCH reception resource, and performs a target operation on the feedback information on the PSFCH resource, where the target operation includes at least one of a reception operation and a transmission operation.As can be seen from the above, the embodiment of the present invention provides a solution for determining a target PSFCH resource, which can make the first communication device and the second communication device have the same understanding of the target PSFCH resource and further improve communication reliability. [Brief explanation of the drawings]

[0015] In order to more clearly describe the technical solutions of the embodiments of the present invention, the following will briefly describe the drawings required to be used in describing the embodiments of the present invention. Of course, the drawings in the following description are only a part of the embodiments of the present invention, and those skilled in the art can derive other drawings from these drawings without any creative efforts. [Figure 1] FIG. 2 is a schematic diagram of resources provided by an embodiment of the present invention; [Figure 2] 1 is a flowchart of a method for determining a PSFCH resource provided by an embodiment of the present invention; [Figure 3] 1 is a flowchart of a PSFCH resource configuration method provided by an embodiment of the present invention; [Figure 4a] FIG. 1 is a first schematic diagram illustrating the correspondence between bits and resources provided by an embodiment of the present invention. [Figure 4b] FIG. 2 is a second schematic diagram illustrating the correspondence between bits and resources provided by an embodiment of the present invention. [Figure 5a] FIG. 3 is a third schematic diagram illustrating the correspondence between bits and resources provided by an embodiment of the present invention. [Figure 5b] FIG. 4 is a fourth schematic diagram illustrating the correspondence between bits and resources provided by an embodiment of the present invention. [Figure 6a] FIG. 5 is a fifth schematic diagram illustrating the correspondence between bits and resources provided by an embodiment of the present invention. [Figure 6b] FIG. 6 is a sixth schematic diagram illustrating the correspondence between bits and resources provided by an embodiment of the present invention. [Figure 6c] FIG. 7 is a seventh schematic diagram illustrating the correspondence between bits and resources provided by an embodiment of the present invention. [Figure 7] FIG. 8 is an eighth schematic diagram illustrating the correspondence between bits and resources provided by an embodiment of the present invention. [Figure 8a] FIG. 9 is a ninth schematic diagram illustrating the correspondence between bits and resources provided by an embodiment of the present invention. [Figure 8b] FIG. 10 is a schematic diagram illustrating the correspondence between bits and resources provided by an embodiment of the present invention. [Figure 9] FIG. 11 is an eleventh schematic diagram showing the correspondence between bits and resources provided by an embodiment of the present invention. [Figure 10] FIG. 1 is a first structural diagram of a communication device provided by an embodiment of the present invention; [Figure 11] FIG. 2 is a second configuration diagram of a communication device provided according to an embodiment of the present invention; [Figure 12] FIG. 3 is a third configuration diagram of a communication device provided according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0016] In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and are not all of the embodiments, and all other embodiments that can be obtained by those skilled in the art based on the embodiments of the present invention without any creative efforts shall fall within the protection scope of the present invention.

[0017] The terms "first," "second," etc., used in this application do not describe a particular order or chronology, but rather are used to distinguish between similar objects. The terms "comprise" and "include," and any variations thereof, are intended to be non-exclusive inclusive. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to the explicitly listed steps or units, but may further include other steps or units that are not listed or are inherent in the process, method, product, or apparatus. The use of "and / or" in this application indicates at least one of the connected objects. For example, A and / or B and / or C includes seven situations, such as A alone, B alone, C alone, A and B together, B and C together, A and C together, and A, B, and C together.

[0018] For ease of understanding, the following provides some details regarding the embodiments of the present invention.

[0019] (1) Sidelink.

[0020] In practical applications, the side link is also called Sidelink.

[0021] The Long Term Evolution (LTE) system supports sidelink, which allows direct data transmission between terminals (also called user equipment (UE)) without going through network equipment.

[0022] The UE transmits sidelink control information (SCI) over the physical sidelink control channel (PSCCH) and schedules transmissions over the physical sidelink shared channel (PSSCH). The transmission is broadcast, and the receiving side does not provide feedback to the transmitting side regarding whether the data is successfully received.

[0023] LTE Sidelink is designed to support two resource allocation modes: Scheduled Resource Allocation mode and Autonomous Resource Selection mode. In the former, resources are allocated to each UE under the control of the network side equipment, while in the latter, resources are selected autonomously by the UE.

[0024] The LTE system also supports Sidelink Carrier Aggregation (CA). Unlike the Uu interface (i.e., downlink and uplink), LTE Sidelink CA does not distinguish between Primary Component Carrier (PCC) and Secondary Component Carrier (SCC). In resource autonomous selection mode, a UE performs resource sensing and resource reservation independently for each component carrier (CC).

[0025] The LTE Sidelink design is applicable to specific public safety projects (e.g., emergency communications at disaster sites such as fires and earthquakes) and vehicle-to-everything (V2X) communications. Vehicle-to-vehicle and vehicle-to-roadside communications include various services such as basic safety-related communications, advanced (autonomous) driving, platooning, and sensor expansion. Because LTE Sidelink only supports broadcast communications, it is primarily used for basic safety-related communications. New Radio (NR) systems are available in operating frequency bands above 6 GHz, which LTE does not support, and support larger operating bandwidths, so other high-level V2X services are supported by New Radio NR Sidelink.

[0026] In the Proximity-based Services (ProSe) network architecture, the communication interface between terminals is called the PC5 interface, and the connection interface between terminals and access network devices such as the Evolved Universal Terrestrial Radio Access Network (E-UTRAN) is called the Uu interface.

[0027] (2) Sidelink and unicast or multicast link.

[0028] Sidelink transmission in the LTE system is based on broadcasting, and the UE does not establish a point-to-point connection at the physical layer, and there is no feedback mechanism: the receiver does not provide feedback to the sender on whether reception was successful, nor can it perform channel measurement and provide feedback on the measurement results.

[0029] The sidelink of the NR system is being researched, and currently, each company is tending to support various transmission methods in the NR system, including unicast, multicast, and broadcast. As the names suggest, unicast means one-to-one transmission, while multicast means one-to-many transmission. Broadcast is also one-to-many transmission, but there is no concept of UEs belonging to the same group.

[0030] (3) Physical Sidelink Feedback Channel (PSFCH).

[0031] In LTE, V2X only supports broadcast services and does not support Hybrid Automatic Repeat Request (HARQ) feedback. NR introduced unicast and multicast transmission methods, so when unicast and some multicast services are transmitted, the receiver may be required to send HARQ feedback to the transmitter. HARQ feedback is transmitted on a dedicated channel, the PSFCH. PSFCH resources can be allocated to a resource pool, but it is also possible to not allocate PSFCH resources to a resource pool. In this case, transmissions in this resource pool cannot support HARQ feedback.

[0032] (4) Resource Pool

[0033] In NR and LTE, there is a concept of a "resource pool" for V2X transmission. The resource pool is sent from the network side or allocated in advance and contains the resources used for transmission and many transmission-related parameters. For example, in LTE, the resource pool includes the offset value of the first subframe of the resource pool, whether PSCCH and PSSCH are transmitted in adjacent resource blocks (RBs), the channel busy ratio (CBR), the measured sidelink received signal strength indication (S-RSSI) threshold, area identifier, etc.

[0034] In addition to configuring a general transmission resource pool in the UE, the network may also configure an exceptional resource pool to be used in special cases such as during switching, when a Radio Link Failure (RLF) occurs, or during the transition from an IDLE to a CONNECTED state.

[0035] For UEs in different network coverage areas, the resource pool and corresponding resources may be selected based on network scheduling, or the resource pool may be selected by the UE itself based on pre-configuration. Regarding resource pool selection, it may be necessary to select a resource pool related to the UE's location area while taking into consideration the area where the UE is located. When selecting resources in a resource pool, the selection is mainly based on the sensing mechanism, but random selection is also possible (e.g., selecting resources in an abnormal resource pool).

[0036] The transmission resource pool and the reception resource pool may be configured separately.

[0037] (5),Resource granularity.

[0038] In the LTE system, the smallest resource granularity in the time domain is one Orthogonal Frequency Division Multiplex (OFDM) code (uplink is a Single-Carrier Frequency-Division Multiple Access (SC-FDMA) code, hereafter collectively referred to as an OFDM code), and the smallest resource granularity in the frequency domain is one subcarrier.

[0039] One time-frequency resource unit consisting of one OFDM symbol and one subcarrier is called a resource element (RE). The physical layer uses RE as the basic unit when performing resource mapping. All OFDM symbols and 12 subcarriers in one time slot constitute one RB, and LTE resource scheduling uses RB as the basic unit.

[0040] (6) Sidelink resource allocation.

[0041] The frequency domain allocation of the Sidelink may be configured by at least one parameter of the Sidelink carrier, the Sidelink Bandwidth Part (BWP), and the Sidelink resource pool.

[0042] The Sidelink carrier may be indicated by at least one parameter, including the subcarrier spacing of the carrier, the bandwidth, the carrier center frequency point location, the frequency domain location of the Sidelink synchronization signal block (SSB), the offset between the carrier boundary and the reference resource, and the reference resource, which may be reference point A.

[0043] The Sidelink BWP may be indicated by at least one parameter, including the frequency domain location and bandwidth of the BWP and the subcarrier spacing of the BWP. The frequency domain location and bandwidth of the BWP may also be referred to as the Resource Indicator Value (RIV) of the BWP.

[0044] The sidelink resource pool may be indicated by at least one parameter, including the lowest RB index value X of the subchannel, the size Y of the subchannel, the number Z of subchannels, and the number of frequency domain resources or bandwidth K of the resource pool. Based on X, Y, and Z, the frequency domain resources occupied by the resource pool and the specific locations of the frequency domain resources can be obtained. Assuming that the frequency domain resources occupied by the resource pool are a total of K frequency domain resources from X to M, and assuming that the unit of Y is RB, it can be seen that the frequency domain resources are K RBs and include Z subchannels with a size of Y RBs.

[0045] Any of the above parameters may be configured in advance or configured on the network side, for example, the parameter numRbResourcePool indicates the total number of RBs occupied by one resource pool.

[0046] Optionally, the relationship between carriers, BWPs, resource pools, and subchannels can be referred to in Figure 1. As shown in Figure 1, the number of resources in a carrier > the number of resources in a BWP > the number of resources in a resource pool > the number of resources in a subchannel, where a carrier includes a BWP, a BWP includes a resource pool, and a resource pool includes a subchannel.

[0047] Please refer to Figure 2, which is a flowchart of a method for determining a PSFCH resource provided by an embodiment of the present invention. The method for determining a PSFCH resource of the embodiment of the present invention is applied to a first communication device. Optionally, the first communication device may be a terminal. In practical application, the terminal may be a mobile phone, a tablet (personal computer), a laptop computer, a personal digital assistant (PDA), a mobile internet device (MID), a wearable device, an in-vehicle device, etc.

[0048] As shown in FIG. 2, the method for determining a PSFCH resource may include the following steps 201 and 202.

[0049] In step 201, a target PSFCH resource is determined according to the obtained PSFCH resource allocation information, where the target includes at least one of a carrier, a bandwidth portion BWP, and a resource pool, and the PSFCH resource includes at least one of a PSFCH transmission resource and a PSFCH reception resource.

[0050] In this embodiment, the target PSFCH resource is configured according to PSFCH resource configuration information. In specific implementation, the PSFCH resource configuration information obtained by the first communication device can be configured by the second communication device or pre-defined in a protocol. Optionally, the second communication device can be a network side device or a terminal. In practical application, the network side device can be a base station, a relay device, an access point, etc.

[0051] When the number of target objects is greater than 1, in a first implementation, the PSFCH resources for each target object may be configured according to different PSFCH resource configuration information, i.e., the PSFCH resources for each target object are configured according to independent PSFCH resource configuration information. In a second implementation, the PSFCH resources for each target object may be configured according to the same PSFCH resource configuration information.

[0052] For ease of understanding, an example is given below: Assume that three resource pools are configured in the first communication device. In this way, for the above first implementation, the second communication device may send three pieces of PSFCH resource configuration information to the first communication device, each used to configure PSFCH resources in one resource pool, while for the above second implementation, the second communication device may send only one piece of PSFCH resource configuration information to the first communication device, used to configure PSFCH resources in the three resource pools.

[0053] In step 202, a targeted operation is performed on the feedback information on the PSFCH resource, the targeted operation including at least one of a receive operation and a transmit operation.

[0054] Performing a receive operation on feedback information means receiving the feedback information, and performing a send operation on feedback information means sending the feedback information, which will be described in detail as follows.

[0055] When the PSFCH resources include PSFCH transmission resources, a first communication device can transmit feedback information on the PSFCH transmission resources, and in response, a second communication device can receive feedback information on the PSFCH transmission resources. In this case, the first communication device may be considered as a transmitter, and the second communication device may be considered as a receiver.

[0056] When the PSFCH resources include PSFCH reception resources, a first communication device can receive feedback information on the PSFCH reception resources, and in response, a second communication device can transmit feedback information on the PSFCH reception resources. In this case, the first communication device may be considered as a receiving side, and the second communication device may be considered as a transmitting side.

[0057] According to the PSFCH resource determination method of this embodiment, the first communication device determines a target PSFCH resource according to the acquired PSFCH resource allocation information, where the target includes at least one of a carrier, a bandwidth portion BWP, and a resource pool, where the PSFCH resource includes at least one of a PSFCH transmission resource and a PSFCH reception resource, and performs a target operation on the feedback information on the PSFCH resource, where the target operation includes at least one of a reception operation and a transmission operation.As can be seen from the above, this embodiment of the present invention provides a solution for determining a target PSFCH resource, which enables the first communication device and the second communication device to have the same understanding of the target PSFCH resource and further improves communication reliability.

[0058] In this embodiment, the PSFCH resource allocation information may optionally configure the target PSFCH resource in any one of the following ways:

[0059] In the first manner, the PSFCH resource allocation information may configure the target PSFCH resource according to bits.

[0060] In manner 2, the PSFCH resource allocation information may directly indicate at least one parameter of the target PSFCH resource.

[0061] In manner 3, the PSFCH resource configuration information may configure the target PSFCH resource according to an integer NUM, where NUM is a positive integer.

[0062] Methods 1, 2 and 3 will be specifically explained below.

[0063] In the manner 1, the PSFCH resource allocation information may configure the target PSFCH resource according to bits.

[0064] In specific implementation, the PSFCH resource allocation information may be configured to allocate the target PSFCH resource by a bitmap or a bit string, but is not limited thereto.

[0065] It should be noted that when the PSFCH resources include PSFCH transmission resources and PSFCH reception resources, the bits for configuring the target PSFCH transmission resources and the bits for configuring the target PSFCH reception resources in the PSFCH resource configuration information are independent of each other. For example, assuming that the PSFCH resource configuration information configures the target PSFCH transmission resources and the PSFCH reception resources according to a bitmap, the PSFCH resource configuration information may include a bitmap1 for configuring the target PSFCH transmission resources and a bitmap2 for configuring the target PSFCH reception resources.

[0066] Optionally, the bit of the PSFCH resource allocation information and the frequency domain resource of the target resource have a first correspondence relationship, and the target resource is one of a carrier, a BWP, and a resource pool.

[0067] It should be noted that when the PSFCH resources include PSFCH transmission resources and PSFCH reception resources, the bits of the PSFCH resource configuration information may be specifically understood as bits for configuring target PSFCH transmission resources in the PSFCH resource configuration information, or bits for configuring target PSFCH reception resources in the PSFCH resource configuration information.

[0068] It should be noted that a target resource may be considered as a target object, and at this time, there is no need to distinguish between the two concepts of target object and target resource, and the target object may be replaced with the target resource.

[0069] In practical applications, the target resource and the target object may be the same, for example, both the target object and the target resource are a resource pool, or the target resource and the target object may be different, for example, the target object is a resource pool and the target resource is a BWP.

[0070] Optionally, the target resource is: 1) When the target object is a resource pool, the target resource is one of a carrier where the target object is located, a BWP where the target object is located, and a resource pool; 2) When the target object is a BWP, the target resource is a BWP or a carrier where the target object is located; 3) when the target object is a carrier, the target resource is a carrier; At least one of the following may be satisfied, but is not limited to these.

[0071] If the target resource satisfies 1), the bit of the PSFCH resource allocation information may correspond to a frequency domain resource of a carrier, a BWP, or a resource pool, but it is the PSFCH resource of the resource pool that is allocated by the PSFCH resource allocation information.

[0072] If the target resource satisfies 2), the bit of the PSFCH resource allocation information may correspond to the frequency domain resource of a carrier or a BWP, but it is the PSFCH resource of the BWP that is allocated by the PSFCH resource allocation information.

[0073] It should be noted that if the first communication device is configured with multiple BWPs or carriers, when the target object is different from the target resource and the target resource is a BWP or carrier, the PSFCH resource of the target object corresponds to the identifier information of the BWP or carrier where the target object is located. Optionally, the PSFCH resource configuration information may further include the identifier information of the BWP or carrier where the target object is located.

[0074] For example, assuming that the target object is a resource pool, the target resource is a BWP, and multiple BWPs are deployed in the first communication device, the PSFCH resources of the resource pool may be associated with corresponding BWP IDs.

[0075] In this way, after the first communication device obtains the PSFCH resource allocation information, it can determine the target PSFCH resource according to the first correspondence relationship and the relationship between the target object and the target resource.

[0076] Optionally, the PSFCH resource allocation information includes L bits, where L is: A first type of situation, where the value of L is equal to a first number, and the first number is the number of actual frequency domain resources of the target resource or the maximum possible number of frequency domain resources of the target resource; The second kind of situation where L is a positive integer, Satisfy one of the following.

[0077] It should be noted that when the PSFCH resources include PSFCH transmission resources and PSFCH reception resources, the L bits may be understood as L bits for configuring target PSFCH transmission resources or PSFCH reception resources. For example, assuming that the PSFCH resource configuration information can configure target PSFCH resources by bitmap, the inclusion of L bits in the PSFCH resource configuration information may be understood as L bits being included in a bitmap for configuring target PSFCH transmission resources or PSFCH reception resources in the PSFCH resource configuration information. Note that the L bits for configuring target PSFCH transmission resources and the L bits for configuring target PSFCH reception resources may satisfy the same or different conditions.

[0078] When specifically implemented, L may be set by the network side device or may be specified by a protocol.

[0079] In practical applications, the number of actual frequency domain resources of the target resource is less than or equal to the maximum possible number of frequency domain resources of the target resource, and the number of actual frequency domain resources of the target target is less than or equal to the number of actual frequency domain resources of the target resource. Therefore, in the first situation where the value of L is equal to the first number, L must be greater than or equal to the number of frequency domain resources of the target target.

[0080] In practical applications, the actual frequency domain resources of the resource pool are the frequency domain resources actually occupied by the resource pool configured by the network side device, the actual frequency domain resources of the BWP are the frequency domain resources occupied by the bandwidth of the BWP actually configured by the network side device, and the actual frequency domain resources of the carrier are the frequency domain resources occupied by the carrier bandwidth actually configured by the network side device. Optionally, the maximum possible number of frequency domain resources of at least one of the resource pool, the BWP, and the carrier is 275.

[0081] In the second situation, L can be any positive integer, and in specific implementation, L can be less than, equal to, or greater than the number of actual frequency domain resources of the target object.

[0082] It can be seen from the above that, compared with the first scenario, the value of L is more flexible in the second scenario; however, compared with the second scenario, in the first scenario, L must be equal to or greater than the number of target frequency domain resources. In this way, the first communication device can directly determine the target PSFCH resource according to the first correspondence relationship, and the complexity of determining the target PSFCH resource can be reduced.

[0083] The first correspondence relationship will be described below.

[0084] Optionally, the first correspondence relationship is: a) the p+a-th bit when the bits of the PSFCH resource allocation information are arranged in ascending order corresponds to the p-th frequency domain resource when the frequency domain resources of the target resource are arranged in ascending order; b) the p+a-th bit when the bits of the PSFCH resource allocation information are arranged in descending order of numbers corresponds to the p-th frequency domain resource when the frequency domain resources of the target resource are arranged in descending order of numbers; c) the p+a-th bit when the bits of the PSFCH resource allocation information are arranged in ascending order corresponds to the p-th frequency domain resource when the frequency domain resources of the target resource are arranged in descending order; d) The p+a-th bit of the PSFCH resource allocation information when the bits are arranged in ascending order corresponds to the p-th frequency domain resource when the frequency domain resources of the target resource are arranged in ascending order; e) When the bits of the PSFCH resource allocation information are arranged in ascending order, the p+a-th bit corresponds to a first frequency domain resource in the target resource, and the bits corresponding to the target resource are consecutive; f) the p+a-th bit when the bits of the PSFCH resource allocation information are arranged in descending order corresponds to a first frequency domain resource in the target resource, and the bits corresponding to the target resource are consecutive; Satisfy one of the following. Here, p is an integer ranging from 1 to K, where K is the number of actual frequency domain resources of the target resource, p+a is an integer ranging from 1 to L, where L is the number of bits included in the PSFCH resource allocation information, and a is a natural number. Optionally, a may be 0 if L is less than or equal to the number of actual frequency domain resources of the target resource.

[0085] For e) and f), the smallest numbered bit and the largest numbered bit may be regarded as consecutive bits or non-consecutive bits, and this embodiment is not limited thereto. The first frequency domain resource may be any frequency domain resource in the target resource.

[0086] Optionally, when the target resource is a carrier or a BWP, the first frequency domain resource satisfies at least one of the following: the first frequency domain resource is a reference resource of the target resource or a specific frequency domain position among at least one frequency domain position for signal block SSB transmission of the target resource; and the first frequency domain resource is a center frequency domain resource of the target resource.

[0087] Here, the specific frequency domain location may be any one of the at least one frequency domain locations. Optionally, the specific frequency domain location may be, but is not limited to, the frequency domain location with the highest number or the frequency domain location with the lowest number among the at least one frequency domain location.

[0088] For ease of understanding, an example will be given below.

[0089] In Example 1, it is assumed that the target resource is a resource pool, the resource pool includes three RBs denoted as RB1 to RB3, and the bitmap for arranging the PSFCH receiving resource pool of the resource pool in the PSFCH resource allocation information includes nine bits denoted as bit1 to bit9.

[0090] Thus, when a=0, When the first correspondence relationship satisfies a), bit1 corresponds to RB1, bit2 corresponds to RB2, bit3 corresponds to RB3, and there is no RB in the resource pool that corresponds to bits 4 to 9. When the first correspondence relationship satisfies b), bit9 corresponds to RB3, bit8 corresponds to RB2, bit7 corresponds to RB1, and there is no RB in the resource pool that corresponds to bits1 to 6. When the first correspondence relationship satisfies c), bit9 corresponds to RB1, bit8 corresponds to RB2, bit7 corresponds to RB3, and there is no RB in the resource pool that corresponds to bits 1 to 6. When the first correspondence relationship satisfies d), bit1 corresponds to RB3, bit2 corresponds to RB2, bit3 corresponds to RB1, and there is no RB in the resource pool that corresponds to bits 4 to 9. When the first correspondence relationship satisfies e), and the first frequency domain resource is the central frequency domain resource of the resource pool, i.e., RB2, bit1 corresponds to RB2, bit2 corresponds to RB3, bit3 corresponds to RB1, and there is no RB in the resource pool that corresponds to bits 4 to 9. If the first correspondence relationship satisfies f) and the first frequency domain resource is the central frequency domain resource of the resource pool, i.e., RB2, then bit 9 corresponds to RB2, bit 8 corresponds to RB3, bit 7 corresponds to RB1, and there is no RB in the resource pool that corresponds to bits 1 to 6.

[0091] When a=1, When the first correspondence relationship satisfies a), bit2 corresponds to RB1, bit3 corresponds to RB2, bit3 corresponds to RB4, and there is no RB in the resource pool that corresponds to bit1 and bits5 to bit9. When the first correspondence relationship satisfies b), bit9 corresponds to RB3, bit8 corresponds to RB2, bit7 corresponds to RB1, and there is no RB in the resource pool that corresponds to bits1 to 6. When the first correspondence relationship satisfies c), bit8 corresponds to RB1, bit7 corresponds to RB2, bit6 corresponds to RB3, and there is no RB in the resource pool that corresponds to bit9 and bits1 to bit5. When the first correspondence relationship satisfies d), bit2 corresponds to RB3, bit3 corresponds to RB2, bit4 corresponds to RB1, and there are no RBs in the resource pool that correspond to bit1 and bits5 to bit9. When the first correspondence relationship satisfies e), and the first frequency domain resource is the central frequency domain resource of the resource pool, i.e., RB2, bit2 corresponds to RB2, bit3 corresponds to RB3, bit4 corresponds to RB1, and there are no RBs in the resource pool that correspond to bit1 and bits 5 to 9. If the first correspondence relationship satisfies f) and the first frequency domain resource is the central frequency domain resource of the resource pool, i.e., RB2, then bit 8 corresponds to RB2, bit 7 corresponds to RB3, bit 6 corresponds to RB1, and there are no RBs in the resource pool that correspond to bit 9 and bits 1 to 5.

[0092] In Example 2, it is assumed that the target resource is a resource pool, the resource pool includes three RBs denoted as RB1 to RB3, and the bitmap for arranging the PSFCH receiving resource pool of the resource pool in the PSFCH resource allocation information includes three bits denoted as bit1 to bit3.

[0093] In this way, when the first correspondence relationship satisfies a), bit1 corresponds to RB1, bit2 corresponds to RB2, and bit3 corresponds to RB3. When the first correspondence relationship satisfies b), bit3 corresponds to RB3, bit2 corresponds to RB2, and bit1 corresponds to RB1. When the first correspondence relationship satisfies c), bit3 corresponds to RB1, bit2 corresponds to RB2, and bit1 corresponds to RB3. When the first correspondence relationship satisfies d), bit1 corresponds to RB3, bit2 corresponds to RB2, and bit3 corresponds to RB1. If the first correspondence relationship satisfies e) and the first frequency domain resource is the central frequency domain resource of the resource pool, that is, RB2, then bit1 corresponds to RB2, bit2 corresponds to RB3, and bit3 corresponds to RB1. If the first correspondence relationship satisfies f) and the first frequency domain resource is the central frequency domain resource of the resource pool, that is, RB2, then bit3 corresponds to RB2, bit2 corresponds to RB3, and bit1 corresponds to RB1.

[0094] As can be seen from Example 2, when L is equal to the actual number of resources of the target resource, the specific expression form of the first correspondence relationship is the same when the first correspondence relationship satisfies a) and when the first correspondence relationship satisfies b).

[0095] In Example 3, it is assumed that the target resource is a resource pool, the resource pool includes three RBs denoted as RB1 to RB3, and the bitmap for arranging the PSFCH reception resource pool of the resource pool in the PSFCH resource allocation information includes two bits denoted as bit1 and bit2.

[0096] In this way, when the first correspondence relationship satisfies a), bit1 corresponds to RB1, bit2 corresponds to RB2, and there is no bit corresponding to RB3. When the first correspondence relationship satisfies b), bit2 corresponds to RB3, bit1 corresponds to RB2, and there is no bit corresponding to RB1. When the first correspondence relationship satisfies c), bit2 corresponds to RB1, bit1 corresponds to RB2, and there is no bit corresponding to RB3. When the first correspondence relationship satisfies d), bit1 corresponds to RB3, bit2 corresponds to RB2, and there is no bit corresponding to RB1. If the first correspondence relationship satisfies e), and the first frequency domain resource is the central frequency domain resource of the resource pool, that is, RB2, then bit1 corresponds to RB2, bit2 corresponds to RB3, and there is no bit corresponding to RB1. If the first correspondence relationship satisfies f), and the first frequency domain resource is the central frequency domain resource of the resource pool, that is, RB2, then bit2 corresponds to RB2, bit1 corresponds to RB3, and there is no bit corresponding to RB1.

[0097] Optionally, the step of determining a PSFCH resource in a target object according to the obtained PSFCH resource allocation information includes: determining a bit corresponding to the target frequency domain resource in the PSFCH resource allocation information as a first target bit; determining a PSFCH resource in the target object according to a value for each bit in the first target bit; Including, When the value of a first bit in the first target bit is a first value, it is determined that a second frequency domain resource corresponding to the first bit in the target object is a PSFCH resource, and when the value of the first bit is a second value, it is determined that the second frequency domain resource is not a PSFCH resource.

[0098] Optionally, the first value may be 0 and the second value may be 1, or the first value may be 1 and the second value may be 0, but is not limited to these.

[0099] When the target object is a target resource, the first communication device can directly determine the first target bit based on the first correspondence relationship.

[0100] For example, in the above example 1, if the first correspondence relationship satisfies a), the first communication device can determine that the first target bits include bit1 to bit3.

[0101] Assume that the first value is 0, the second value is 1, the values ​​of bit1 and bit3 are 1, and the value of bit2 is 0. In this way, the first communication device can determine that RB2 in the resource pool is a PSFCH resource and is available for PSFCH transmission, and that RB1 and RB3 in the resource pool are neither PSFCH resources nor available for PSFCH transmission.

[0102] If the target object is different from the target resource, the first communication device needs to first determine candidate bits including bits corresponding to the frequency domain resources of the target resource in the PSFCH resource allocation information, and then determine the first target bit from the candidate bits.

[0103] For example, it is assumed that the target object is a resource pool, the target resource is a BWP, and in the PSFCH resource allocation information, bit 1 corresponds to RB1 of the BWP, bit 2 corresponds to RB2 of the BWP, bit 3 corresponds to RB3 of the BWP, bit 4 corresponds to RB4 of the BWP, bit 5 corresponds to RB5 of the BWP, and bit 6 corresponds to RB6 of the BWP, that is, the candidate bits include bits 1 to 6. Note that, if it is assumed that the resource pool in the BWP occupies RB2 to RB5, the first communication device can determine that the first target bits include bits 2 to 5.

[0104] Assume that the first value is 1, the second value is 0, the values ​​of bit2 and bit5 are 0, and the values ​​of bit3 and bit4 are 1. In this way, the first communication device can determine that RB3 and RB4 of the resource pool are PSFCH resources and are available for PSFCH transmission, and that RB2 and RB5 of the resource pool are neither PSFCH resources nor available for PSFCH transmission.

[0105] According to the above method, after the first communication device obtains the PSFCH resource allocation information, it can determine some or all of the PSFCH resources in the target object, thereby improving communication reliability.

[0106] Furthermore, when the PSFCH resource allocation information further includes a second target bit other than the first target bit, the method further comprises: The method further includes the step of ignoring the second target bit.

[0107] In practical application, after obtaining the PSFCH resource allocation information, the first communication device can distinguish between the first target bit and the second target bit. For the first target bit, the first communication device can determine whether the target frequency domain resource corresponding to each bit in the first target bit is a PSFCH frequency domain resource by detecting the value of each bit in the first target bit. For the second target bit, the first communication device can directly ignore it, that is, the first communication device does not need to perform any processing on the second target bit, such as detecting the value of each bit of the second target bit.

[0108] For example, in Example 1 above, if the first correspondence relationship satisfies a), the first communication device can determine that the second target bits include bits 4 to 9, and the first communication device may ignore bits 4 to 9.

[0109] It should be noted that in actual applications, the value of each bit in the second target bit can be set arbitrarily, for example, the value of each bit in the second target bit can be set to the first value or the second value, but is not limited thereto.

[0110] Optionally, when the target object further includes a third frequency domain resource, and the third frequency domain resource does not correspond to any bit in the PSFCH resource allocation information, the method further comprises: determining that the third frequency domain resource is a PSFCH resource; determining that the third frequency domain resource is not a PSFCH resource; Further, any one of the following is included.

[0111] For example, in the above example 3, if the first correspondence relationship satisfies a), the first communication device can determine that RB3 is the third frequency domain resource.

[0112] If it is determined that the third frequency domain resource is a PSFCH resource, the first communication device may determine that RB3 is a PSFCH resource and is available for PSFCH transmission.

[0113] If it is determined that the third frequency domain resource is not a PSFCH resource, the first communication device may determine that RB3 is not a PSFCH resource and is unavailable for PSFCH transmission.

[0114] Optionally, when the value of L is equal to a first number, and the first number is the number of actual frequency domain resources of the target resource, before the step of determining a target PSFCH resource according to the obtained PSFCH resource allocation information, the method may include: receiving first information, the first information being for indicating a number of actual frequency domain resources of the target resource or a first parameter, the first parameter being used to calculate the number of actual frequency domain resources of the target resource; Further including, The step of determining a target PSFCH resource according to the obtained PSFCH resource allocation information includes: The method includes determining the target PSFCH resource according to the obtained PSFCH resource allocation information and the first information.

[0115] For ease of understanding, an example will be given in which the target resource is a resource pool. In one implementation, the first parameter may be the size M of the resource pool, and in another implementation, the first parameter may include the number Z of sub-channels included in the resource pool and the size Y of each sub-channel, where M=Z×Y.

[0116] After the first communication device determines L according to the first information, it can determine whether the target object has a PSFCH resource according to the L-bit indication information in the PSFCH resource allocation information.

[0117] Optionally, when the value of L is equal to a first number, and the first number is the number of actual frequency domain resources of the target resource, the PSFCH resource allocation information is: a first bitmap or a first bit string having L bits; and N1 second bitmaps or N2 second bitstrings, where N2 bits are included for each second bitmap or each second bitstring, and L=N1×N2.

[0118] Furthermore, the target resource includes N1 first resources, and the number of actual frequency domain resources for each of the first resources is equal to N2. For example, the target resource may be a BWP, and the first resource may be a resource pool or a subchannel.

[0119] For convenience of explanation, a bitmap for arranging target PSFCH transmission resources or PSFCH reception resources is referred to as a target bitmap, and a bit string for arranging target PSFCH transmission resources or PSFCH reception resources is referred to as a target bit string.

[0120] In this alternative embodiment, the destination bitmap may consist of one bitmap with L bits, or N1 bitmaps each with N2 bits.

[0121] The target Bit String may consist of one Bit String having L bits, or may consist of N1 Bit Strings each having N2 bits.

[0122] It should be noted that when the PSFCH resource allocation information includes N1 second bitmaps or second bit sequences, the L bits included in the N1 second bitmaps or second bit sequences have unique numbers. Furthermore, the L bits included in the N1 second bitmaps or second bit sequences may have consecutive numbers. In this way, the first communication device can determine the first target bit according to the first correspondence relationship.

[0123] For Manner 2, the PSFCH resource allocation information may directly indicate at least one parameter of the targeted PSFCH resource.

[0124] Optionally, the PSFCH resource allocation information comprises: a starting resource of the target PSFCH resource; The number K of target PSFCH resources; a reference resource of the target PSFCH resource; the target object; a starting subchannel of the target PSFCH resource; the number of subchannels included in the target PSFCH resource; The purpose is to indicate at least one of the following.

[0125] Optionally, when the PSFCH resource allocation information indicates a resource number K of the target PSFCH resources, the step of determining a target PSFCH resource according to the obtained PSFCH resource allocation information includes: determining K consecutive frequency domain resources from a fifth frequency domain resource among the target frequency domain resources as PSFCH resources; In practical application, when the frequency domain resources of the target object are sorted in ascending order, the first frequency domain resource and the last frequency domain resource may be regarded as consecutive resources or non-consecutive resources, and if regarded as consecutive resources, the fifth frequency domain resource may be any one of the frequency domain resources of the target object.

[0126] Optionally, the fifth frequency domain resource is any one of the first or last frequency domain resource when the frequency domain resources of the target frequency domain resources are sorted in ascending order of their numbers, the reference resource indicated by the PSFCH resource allocation information, and the start resource indicated by the PSFCH resource allocation information.

[0127] When the PSFCH resource allocation information indicates a starting subchannel and a subchannel number Z of the target PSFCH resource, the first communication device can determine Z subchannels from the starting subchannel in the target frequency domain resource as PSFCH resources.

[0128] It should be noted that when the PSFCH resource configuration information indicates only some of the above items, the first communication device can obtain the other items in other manners. For example, when the PSFCH resource configuration information indicates only the start subchannel and the PSFCH resource configuration information is configured by a network side device, the first communication device can obtain the number of subchannels from a protocol.

[0129] In the second method, the PSFCH resource allocation information directly indicates the target PSFCH resource. In this way, compared with the case where the PSFCH resource allocation information indicates the target PSFCH resource by bits, the speed at which the first communication device determines the target PSFCH resource can be improved, and the reliability of transmission can be further improved.

[0130] In the above-mentioned Scheme 3, the PSFCH resource configuration information may configure the target PSFCH resource according to an integer NUM, where NUM is a positive integer.

[0131] Optionally, the PSFCH resource allocation information and the NUM consecutive or discrete frequency domain resources in the target resource have a third correspondence relationship, and the target resource is one of a carrier, a BWP, and a resource pool.

[0132] Optionally, the third correspondence relationship is: The PSFCH resource allocation information corresponds to the previous NUM frequency domain resources when the frequency domain resources in the target resource are sorted in ascending order; The PSFCH resource allocation information corresponds to the NUM frequency domain resources after the frequency domain resources in the target resource are sorted in ascending order; The PSFCH resource allocation information corresponds to a predetermined NUM number of frequency domain resources of the target resource; can satisfy one of the following.

[0133] In practical applications, the predetermined NUM frequency domain resources may be consecutive, for example, NUM frequency domain resources at the center when the frequency domain resources in the target resource are sorted in ascending order.

[0134] The predetermined NUM frequency domain resources may be non-contiguous. Further, the predetermined NUM frequency domain resources may be The frequency domain resources are spaced apart by a predetermined interval I, i.e., there is an interval I between two adjacent frequency domain resources; Some of the frequency domain resources are contiguous and some are discrete, for example, the predetermined NUM frequency domain resources are configured into W frequency domain resource groups, the frequency domain resources in each group are contiguous, and the interval between the groups is I; Fulfilling a preset pattern; can satisfy one of the following.

[0135] Optionally, the step of determining a target PSFCH resource according to PSFCH resource configuration information includes: The method includes determining a fourth frequency domain resource occupied by the target object among the NUM frequency domain resources as a PSFCH resource.

[0136] As an example, assume that the target object is a resource pool, the target resource is a BWP, the BWP includes eight frequency domain resources RB1 to RB8, the resource pool in the BWP occupies RB2 to RB5, NUM is 4, and the PSFCH resource allocation information corresponds to the previous NUM frequency domain resources when the frequency domain resources in the target resource are sorted in ascending order. In this way, the first communication device can determine that the NUM frequency domain resources are RB1 to RB4 and the fourth frequency domain resource is RB2 to RB4. In this case, the first communication device can determine that RB1 to RB4 are PSFCH resources and can be used for PSFCH transmission.

[0137] When implemented, if the NUM frequency domain resources further include a fifth frequency domain resource that is not occupied by the target object, the first communication device may ignore the fifth frequency domain resource.

[0138] When the target frequency domain resource further includes a sixth frequency domain resource other than the fourth frequency domain resource, the first communication device may determine that the sixth frequency domain resource is a PSFCH resource, or may determine that the sixth frequency domain resource is not a PSFCH resource.

[0139] Compared with Scheme 1, which needs to further determine whether the frequency domain resource of the target object corresponding to each bit in the first target bits is a PSFCH resource based on the value of each bit in the first target bits, Scheme 3 can directly determine the fourth frequency domain resource occupied by the target object among the NUM frequency domain resources as a PSFCH resource, thereby improving the speed of determining the PSFCH resource and further improving communication reliability.

[0140] Please refer to Figure 3, which is a flowchart of a PSFCH resource configuration method provided by an embodiment of the present invention. The PSFCH resource configuration method of the embodiment of the present invention is applied to a second communication device.

[0141] As shown in Figure 3, the PSFCH resource allocation method is as follows: The method may include step 301 of sending PSFCH resource allocation information to the first communication device, where the PSFCH resource allocation information is for determining and allocating target PSFCH resources, where the target includes at least one of a carrier, a bandwidth portion BWP, and a resource pool, and the PSFCH resources include at least one of PSFCH transmission resources and PSFCH reception resources.

[0142] According to the PSFCH resource allocation method of this embodiment, the second communication device sends PSFCH resource allocation information to the first communication device, which is used by the first communication device to determine a target PSFCH resource according to the PSFCH resource allocation information. This provides a solution for determining the target PSFCH resource, ensures that the first communication device and the second communication device have the same understanding of the target PSFCH resource, and further improves communication reliability.

[0143] Optionally, when the PSFCH resource allocation information configures the PSFCH resource according to a bit, there is a first correspondence between the bit of the PSFCH resource allocation information and a frequency domain resource of a target resource, and the target resource is one of a carrier, a BWP, and a resource pool.

[0144] Optionally, the PSFCH resource allocation information includes L bits, where L is: The value of L is equal to a first number, and the first number is the number of actual frequency domain resources of the target resource or the maximum possible number of frequency domain resources of the target resource; L is a positive integer, and Satisfy one of the following.

[0145] Optionally, the first correspondence relationship is: The p+a-th bit of the PSFCH resource allocation information corresponds to the p-th frequency domain resource of the target resource when the frequency domain resources of the target resource are arranged in ascending order of numbers; The p+a-th bit when the bits of the PSFCH resource allocation information are arranged in descending order of numbers corresponds to the p-th frequency domain resource when the frequency domain resources of the target resource are arranged in descending order of numbers; The p+a-th bit of the PSFCH resource allocation information corresponds to the p-th frequency domain resource of the target resource when the frequency domain resources of the target resource are arranged in ascending order of numbers; The p+a-th bit of the PSFCH resource allocation information corresponds to the p-th frequency domain resource of the target resource when the frequency domain resources of the target resource are arranged in ascending order of numbers; The p+a-th bit when the bits of the PSFCH resource allocation information are arranged in ascending order corresponds to a first frequency domain resource in the target resource, and the bits corresponding to the target resource are consecutive; Satisfy one of the following: The value of p ranges from 1 to K, where K is the number of actual frequency domain resources of the target resource, the value of p+a ranges from 1 to L, where L is the number of bits included in the PSFCH resource allocation information, and a is a natural number.

[0146] Optionally, the first frequency domain resource comprises: When the target resource is a carrier or a BWP, the first frequency domain resource is a reference resource of the target resource or a specific frequency domain position among at least one frequency domain position for signal block SSB transmission of the target resource; The first frequency domain resource is a center frequency domain resource of the target resource; At least one of the following is satisfied.

[0147] Optionally, when the value of L is equal to a first number, and the first number is the number of actual frequency domain resources of the target resource, the method further comprises: The method further includes a step of transmitting first information to the first communication device, the first information being for indicating the number of actual frequency domain resources of the target resource or a first parameter, the first parameter being used to calculate the number of actual frequency domain resources of the target resource.

[0148] Optionally, when the value of L is equal to a first number, and the first number is the number of actual frequency domain resources of the target resource, the PSFCH resource allocation information is: a first bitmap or a first bit string having L bits; and N1 second bitmaps or N2 second bitstrings, where N2 bits are included for each second bitmap or each second bitstring, and L=N1×N2.

[0149] Optionally, the target resource includes N1 first resources, and the number of actual frequency domain resources for each of the first resources is equal to N2.

[0150] Optionally, the target resource is: When the target object is a resource pool, the target resource is one of a carrier where the target object is located, a BWP where the target object is located, and a resource pool; When the target object is a BWP, the target resource is a BWP or a carrier where the target object is located; When the target object is a carrier, the target resource is a carrier; At least one of the following is satisfied.

[0151] Optionally, the PSFCH resource allocation information comprises: a starting resource of the target PSFCH resource; The number K of target PSFCH resources; a reference resource of the target PSFCH resource; the target object; a starting subchannel of the target PSFCH resource; the number of subchannels included in the target PSFCH resource; The purpose is to indicate at least one of the following.

[0152] It should be noted that this embodiment is an embodiment of a second communication device corresponding to the above method embodiment, so reference can be made to the relevant descriptions of the above method embodiment, and similar beneficial effects can be achieved, so the descriptions will be omitted here to avoid repetition.

[0153] The various optional embodiments introduced in this embodiment may be realized in combination with each other or independently, as long as they are not inconsistent with each other, and the embodiments of the present invention are not limited thereto.

[0154] For ease of understanding, an example will be given below.

[0155] For ease of explanation, the following parameters and definitions are provided.

[0156] Number of frequency domain resources for Sidelink carrier i: L carrier_i is the maximum possible value of L carrier_max , for example 275. Number of frequency domain resources for Sidelink BWP j L bwp_j is the maximum possible value of L bwp_max , for example 275. Sidelink Number of frequency domain resources in resource pool k, L RP_k is the maximum possible value of L RP_max , for example 275.

[0157] 1) The format of the PSFCH resource allocation information is a) a bitmap or bit string of length L, b) It may include at least one of the integers NUM.

[0158] 2) Obtaining target PSFCH resource allocation information through at least one of other methods such as configuration, pre-configuration, protocol definition, or user instruction. a) The target object includes at least one of a carrier, a BWP, and a resource pool. b) Different target objects may correspond to different PSFCH resource allocation information, or may correspond to the same PSFCH resource allocation information, which is not limited by the present invention, for example, different resource pools correspond to different PSFCH resource allocation information.

[0159] 3) When the format of the PSFCH resource configuration information is bitmap or bit string, a) L is a preset value, for example, a value according to configuration, pre-configuration, or protocol specification. Preferably, L is the maximum possible number of frequency domain resources or the number of frequency domain resources actually included, specifically including at least one of the following situations: Case 1: If the target object is a resource pool, the length L of the PSFCH resource configuration information corresponding to the resource pool includes one of the following cases: Case 1-1. L is equal to the maximum possible number of carrier frequency domain resources, that is, the length of PSFCH resource allocation information L = L carrier_max is. Case 1-2. L is equal to the number of carrier frequency domain resources, that is, L=L carrier_i is. Case 1-3. L is equal to the maximum available number of BWP frequency domain resources, i.e., L=L bwp_max is. Case 1-4. L is equal to the number of BWP frequency domain resources, i.e., L=L bwp_j is. Case 1-5. L is equal to the maximum available number of frequency domain resources in the resource pool, i.e., L=L RP_max is. Case 1-6. L is equal to the number of frequency domain resources in the resource pool, i.e., L=L RP_k is. Case 2: If the target object is a carrier, the length L of the PSFCH resource allocation information corresponding to different carriers includes one of the following cases: Case 2-1. L is equal to the maximum possible number of carrier frequency domain resources, that is, the length of PSFCH resource allocation information L = L carrier_max is. Case 2-2. L is equal to the number of carrier frequency domain resources, that is, L=L carrier_i is. Case 3: If the target object is a BWP, the length L of the PSFCH resource allocation information corresponding to different BWPs includes one of the following cases: Case: 3-1. L is equal to the maximum possible number of carrier frequency domain resources, that is, the length of PSFCH resource allocation information L = L carrier_max is. Case 3-2. L is equal to the number of carrier frequency domain resources, that is, L=L carrier_i is. Case 3-3. L is equal to the maximum available number of BWP frequency domain resources, i.e., L = L bwp_max is. Case 3-4. L is equal to the number of BWP frequency domain resources, i.e., L=L bwp_j is. Preferably, the above L carrier_max , L bwp_max , L RP_max At least one possible value of is 275. Note: The maximum possible number of frequency domain resources of a carrier, BWP, or resource pool may be understood as the maximum possible number of frequency domain resources included in the carrier, BWP, or resource pool within the scope of configuration, pre-configuration, or protocol allowance, but does not mean that a carrier, BWP, or resource pool containing such a large number of frequency domain resources is actually configured, pre-configured, or exists.

[0160] 4) When the PSFCH resource configuration information is a bitmap or a bit string, the parsing method is as follows: a) The bit of the bitmap corresponds to the frequency domain resource of the target resource, and the target resource includes at least one of a resource pool, a BWP, and a carrier. The target resource is not necessarily the same as the target object. For example, the target resource may be a BWP, that is, the bit in the PSFCH resource allocation information corresponds to the frequency domain resource of the BWP, but the user may need to determine the PSFCH resource of the resource pool according to this information. The correspondence relationship between the bit of the Bitmap and the frequency domain resource of the target resource may include any one of the following: The lowest bit of the PSFCH resource allocation information corresponds to the lowest frequency domain resource of the target resource, the second lowest bit corresponds to the second lowest frequency domain resource of the target resource, and so on. The highest bit of the PSFCH resource allocation information corresponds to the highest frequency domain resource of the target resource, the second highest bit corresponds to the second highest frequency domain resource of the target resource, and so on. The highest bit of the PSFCH resource allocation information corresponds to the lowest frequency domain resource of the target resource, the second highest bit corresponds to the second lowest frequency domain resource of the target resource, and so on. The lowest bit of the PSFCH resource allocation information corresponds to the highest frequency domain resource of the target resource, the second lowest bit corresponds to the second highest frequency domain resource of the target resource, and so on. A pre-configured bit (e.g., the second lowest bit or the second highest bit) of the PSFCH resource allocation information corresponds to the lowest or highest frequency domain resource of the target resource, and so on, where the pre-configured bit may be any bit other than the highest bit or the lowest bit. The lowest or highest bit of the PSFCH resource allocation information corresponds to the preset frequency domain resource (e.g., the center frequency domain resource) of the target resource, and by analogy, the preset frequency domain resource includes either the highest RB, the lowest RB, or a certain RB, Point A, of the SSB. Note: The above description of "highest" may be replaced with "leftmost," "rightmost," "highest numbered," "last," or "first," and the description of "second highest" may be replaced with "second left," "second right," "second highest numbered," "second counting backward," or "second," in that order. Conversely, the above description of "lowest" may be replaced with "rightmost," "leftmost," "lowest numbered (e.g., 0)," "first," or "last," and the description of "second lowest" may be replaced with "second right," "second left," "second lowest numbered (e.g., 1)," "second," or "second counting backward," in that order. When L is greater than the number of frequency domain resources in the target resource, there may be bits that do not correspond to resources in the target object. b) The user's determination of the PSFCH resource in the target object through the above method includes at least one of the following: In the above method, if there is at least one bit corresponding to a target frequency domain resource in the PSFCH resource allocation information, the user determining the target PSFCH resource according to the PSFCH resource allocation information includes the user determining the target PSFCH resource according to at least a corresponding part. Optionally, when the bit is 1, it indicates that the frequency domain resource is used for the PSFCH, and when the bit is 0, it indicates that the frequency domain resource is not used for the PSFCH, or vice versa. In the above method, if there is at least one bit in the PSFCH configuration information that does not correspond to any target frequency domain resource, the PSFCH resource is not the target PSFCH resource. Optionally, these bits are both set to 0 or 1. Optionally, the user ignores these uncorresponding bits.

[0161] Taking the target object as a resource pool as an example, an example of a user determining a PSFCH resource in the resource pool is as follows:

[0162] Example 1 (target resource is a resource pool): The length of the PSFCH resource allocation information of one resource pool is L RP_max If L RP_max Assume that L is 275, the resource pool contains only K RBs, and the lowest bit of the PSFCH resource allocation information corresponds to the lowest RB in the resource pool in ascending order. RP_max The K bits have no corresponding relationship with the frequency domain resources in the resource pool, and when a user determines a PSFCH resource in the resource pool, the user determines the PSFCH resource according to the K bits at the lower positions, and / or the L bits at the higher positions of the PSFCH resource allocation information. RP_max -K bits are ignored.

[0163] Example 2 (the target resource is a resource pool): When a resource pool includes K RBs and the length of the corresponding PSFCH resource allocation information is L=K, assuming that the lowest bit of the PSFCH resource allocation information corresponds to the lowest RB in the resource pool, and the correspondence is in ascending order, each bit corresponds one-to-one to a frequency domain resource in the resource pool, and thus it is possible to determine which resource is the PSFCH resource according to the value of each bit.

[0164] Example 3 (target resource is BWP): The length of the PSFCH resource allocation information of one resource pool is L bwp_max and L bwp_max is 275 and the resource pool contains only K RBs. If the lowest RB in the resource pool is the Xth RB in the BWP, then the RBs included in the resource pool are the Xth to X+K-1th RBs in the BWP. If the lowest bit of the PSFCH resource allocation information corresponds to the lowest RB in the BWP and corresponds in ascending order, then the Xth lowest bit corresponds to the lowest RB in the resource pool, the X+K-1th bit corresponds to the highest RB in the resource pool, and so on. RP_max -K bits have no corresponding relationship with the frequency domain resources in the resource pool, and when a user determines a PSFCH resource in the resource pool, the user determines the PSFCH resource according to the X to X+K-1 bits of the PSFCH information, and / or determines the PSFCH resource according to the L bits other than the X to X+K-1 bits of the PSFCH resource allocation information. RP_max -K bits are ignored.

[0165] 5) When the PSFCH resource allocation information is an integer NUM, the analysis method is as follows: a) The PSFCH resource allocation information corresponds to NUM frequency domain resources of the target resource, and the target resource includes at least one of a resource pool, a BWP, and a carrier. The target resource is not necessarily the same as the target object. For example, the target resource is a BWP, and the bits in the PSFCH resource allocation information correspond to the frequency domain resources of the BWP, but the user may need to determine the PSFCH resource of the resource pool according to this information. The PSFCH resource allocation information has a correspondence relationship with the NUM frequency domain resources of the target resource, Corresponding to the lowest NUM frequency domain resources of the target resource; Corresponding to the highest NUM frequency domain resources of the target resource; Corresponding to predetermined NUM frequency domain resources (e.g., central NUM frequency domain resources) of the target resource; It may be any one of the above. The NUM frequency domain resources may be NUM contiguous, NUM discrete (e.g., NUM discrete at a predetermined interval I), NUM frequency domain resources that are partly contiguous and partly discrete (e.g., divided into NUM 1 groups, each group contiguous but with an interval I between groups), or NUM resources that satisfy a predetermined pattern. b) The user's determination of the PSFCH resource in the target object through the above method includes at least one of the following: In the above method, if the PSFCH resource allocation information contains at least one frequency domain resource corresponding to the target frequency domain resource, determining the target PSFCH resource according to the PSFCH resource allocation information by the user includes determining the target PSFCH resource according to at least a corresponding part. In the above method, if there is at least one frequency domain resource in the PSFCH allocation information that does not correspond to any of the target frequency domain resources, it will not be the target PSFCH resource, and the user will ignore these uncorresponding frequency domain resources. Preferably, the target object = the target resource at this time.

[0166] The following description will be given based on examples.

[0167] The following embodiments mainly take the case where the target object is a resource pool, i.e., the PSFCH resource in the resource pool is determined, but of course, they also apply to the case where the target object is a BWP or a carrier.

[0168] Example 1: The PSFCH resources in a resource pool are indicated by one bitmap whose size is L. L is a preset value, for example, the maximum possible number of frequency domain resources in the resource pool.

[0169] Assume that the resource pool occupies a total of K RBs from X to M. (Embodiment 1)

[0170] As shown in Figure 4a, the lowest bit of the PSFCH resource allocation information corresponds to the lower boundary of the resource pool (e.g., the lowest RB). Assume that the PSFCH resource allocation information bitmap includes 275 bits, and the lowest 6 bits correspond to frequency domain resources in the resource pool. Among these corresponding bits, a 1 may indicate that a PSFCH feedback resource exists in the RB, a 0 may indicate that a PSFCH feedback resource does not exist in the RB, or a 0 may indicate that a PSFCH feedback resource exists in the RB, and a 1 may indicate that a PSFCH feedback resource does not exist in the RB. For example, if a 1 in the bitmap indicates that a PSFCH feedback resource exists in the RB, in Figure 4a, the lowest four RBs in the resource pool have PSFCH resources, and the remaining two RBs do not have PSFCH resources. In Figure 4a, the resource pool may be regarded as a target target resource.

[0171] Arbitrarily, even if a bit that has no correspondence relationship with a frequency domain resource in a resource pool is designated as 1, it does not become a PSFCH resource of the resource pool.

[0172] In this embodiment, the field description may be one of the following: Indicates the set of PRBs that are actually used for PSFCH transmission and reception, the first PRB refers to the lowest RB index of the subchannel with the lowest index in the resource pool. Indicates the set of PRBs that are actually used for PSFCH transmission and reception, the first bit refers to the RB with the lowest index in the resource pool. (Embodiment 2)

[0173] As shown in Figure 4b, the highest bit of the PSFCH resource allocation information corresponds to the upper boundary of the resource pool (e.g., the highest RB). Assume that the PSFCH resource allocation information bitmap includes 275 bits, and the highest 6 bits correspond to frequency domain resources in the resource pool. Among these corresponding bits, a 1 may indicate that a PSFCH feedback resource exists in the RB, a 0 may indicate that a PSFCH feedback resource does not exist in the RB, or a 0 may indicate that a PSFCH feedback resource exists in the RB, and a 1 may indicate that a PSFCH feedback resource does not exist in the RB. For example, if a 1 in the bitmap indicates that a PSFCH feedback resource exists in the RB, in Figure 4b, the highest four RBs in the resource pool have PSFCH resources, and the remaining two RBs do not have PSFCH resources. In Figure 4b, the resource pool may be regarded as a target target resource.

[0174] Furthermore, even if a bit that does not correspond to a frequency domain resource in a resource pool is set to 1, it does not become a PSFCH resource in the resource pool.

[0175] In this embodiment, the field description may be one of the following: Indicates the set of PRBs that are actually used for PSFCH transmission and reception, the first PRB refers to the largest RB index of the subchannel with the largest index in the resource pool. Indicates the set of PRBs that are actually used for PSFCH transmission and reception, the first bit refers to the RB with the largest index in the resource pool.

[0176] Example 2: The PSFCH resources in the resource pool are indicated by one bitmap whose size is L. The value of L is the number of frequency domain resources actually included.

[0177] Assume that the resource pool occupies a total of K RBs from X to M, where L=K. (Embodiment 1)

[0178] As shown in Figure 5a, the lowest bit of the PSFCH resource allocation information corresponds to the lower boundary of the resource pool (e.g., the lowest RB). Assume that the PSFCH resource allocation information bitmap includes K bits, each corresponding to a frequency domain resource in the resource pool. Among these corresponding bits, a 1 may indicate that a PSFCH feedback resource exists in the RB, a 0 may indicate that a PSFCH feedback resource does not exist in the RB, or a 0 may indicate that a PSFCH feedback resource exists in the RB, and a 1 may indicate that a PSFCH feedback resource does not exist in the RB. In Figure 5a, the resource pool may be regarded as a target target and a target resource.

[0179] In this embodiment, the field description may look like this: Indicates the set of PRBs that are actually used for PSFCH transmission and reception, the first PRB refers to the lowest RB index of the subchannel with the lowest index in the resource pool. (Embodiment 2)

[0180] As shown in Figure 5b, the highest bit of the PSFCH resource allocation information corresponds to the upper boundary of the resource pool (e.g., the highest RB). Assume that the PSFCH resource allocation information bitmap includes K bits, each corresponding to a frequency domain resource in the resource pool. Among these corresponding bits, a 1 may indicate that a PSFCH feedback resource exists in the RB, a 0 may indicate that a PSFCH feedback resource does not exist in the RB, or a 0 may indicate that a PSFCH feedback resource exists in the RB, and a 1 may indicate that a PSFCH feedback resource does not exist in the RB. In Figure 5b, the resource pool may be regarded as a target target and a target resource.

[0181] In this embodiment, the field description may look like this: Indicates the set of PRBs that are actually used for PSFCH transmission and reception, the first PRB refers to the highest RB index of the subchannel with the highest index in the resource pool.

[0182] Example 3: PSFCH resources in a resource pool are indicated by one bitmap of size L. (Embodiment 1)

[0183] At this time, it is assumed that L = the number of frequency domain resources included in the BWP in which the resource pool is located.

[0184] As shown in Figure 6a, the highest bit of the PSFCH resource allocation information corresponds to the upper boundary of the BWP (e.g., the highest RB) in which the resource pool is located. Alternatively, the lowest bit of the PSFCH resource allocation information corresponds to the lower boundary of the BWP (e.g., the lowest RB) in which the resource pool is located. Assuming that the resource pool occupies RBs X to M in the BWP, the bits corresponding to RBs X to M in the PSFCH resource allocation information indicate whether a PSFCH resource exists in the corresponding RB in the resource pool. For example, a 1 in the bitmap indicates that a PSFCH feedback resource exists in that RB. In Figure 6a, the lowest four RBs in the resource pool have PSFCH resources. In Figure 6a, the resource pool may be regarded as the target object, and the BWP may be regarded as the target resource.

[0185] When multiple BWPs exist, the PSFCH resource may be associated with the corresponding BWP ID.

[0186] The lower or upper boundary of the BWP can be determined, for example, by calculation based on one or more of the BWP frequency domain position, subcarrier spacing, and frequency point offset value. (Embodiment 2)

[0187] In this case, it is assumed that L=the maximum possible number of frequency domain resources of the BWP in which the resource pool is located, for example, 275.

[0188] As shown in Figure 6b, the lowest bit of the PSFCH resource allocation information corresponds to the lower boundary of the BWP (e.g., the lowest RB). Assuming that the resource pool in the BWP occupies RBs X to M, the bits corresponding to RBs X to M in the PSFCH resource allocation information indicate whether a PSFCH resource exists in the corresponding RB in the resource pool. For example, a 1 in the bitmap indicates that a PSFCH feedback resource exists in that RB. In Figure 6b, the lowest four RBs in the resource pool have PSFCH resources. In Figure 6b, the resource pool may be regarded as the target object, and the BWP may be regarded as the target resource.

[0189] When multiple BWPs exist, the PSFCH resource may be associated with the corresponding BWP ID.

[0190] In this embodiment, the field description may be one of the following: Indicates the set of PRBs that are actually used for PSFCH transmission and reception. The first PRB indicated by the set refers to the first PRB of the BWP, which is determined as in the location and bandwidth configured for the BWP. The first PRB of the PSFCH resources actually used starts from the first PRB of the resource pool within the BWP. Indicates the set of PRBs that are actually used for PSFCH transmission and reception, the first PRB refers to the first PRB of the BWP. (Embodiment 3)

[0191] In this case, it is assumed that L=the maximum possible number of frequency domain resources of the BWP in which the resource pool is located, for example, 275.

[0192] As shown in Figure 6c, the highest bit of the PSFCH resource allocation information corresponds to the upper boundary of the BWP (e.g., the highest RB). Assuming that the resource pool in the BWP occupies RBs X to M, the bits corresponding to RBs X to M in the PSFCH resource allocation information indicate whether a PSFCH resource exists in the corresponding RB in the resource pool. For example, a 1 in the bitmap indicates that a PSFCH feedback resource exists in the RB. In the following diagram, the lowest four RBs in the resource pool have PSFCH resources. In Figure 6c, the resource pool may be regarded as the target object, and the BWP may be regarded as the target resource.

[0193] When multiple BWPs exist, the PSFCH resource may be associated with the corresponding BWP ID.

[0194] In this embodiment, the field description may be one of the following: Indicates the set of PRBs that are actually used for PSFCH transmission and reception, the first PRB refers to the PRB with the largest (or smallest) index of the BWP which is determined as in the location and bandwidth configured for the BWP. Indicates the set of PRBs that are actually used for PSFCH transmission and reception, the first PRB refers to the PRB of the BWP with the largest (or smallest) index. Example 4

[0195] Embodiment 1: The bits of the PSFCH resource allocation information may have a specific relationship with the frequency domain position Q of the BWP, for example, the RB corresponding to the PSFCH bitmap includes a total of N RBs centered on Q. When there are multiple BWPs, the PSFCH resources may be associated with corresponding BWP IDs.

[0196] Embodiment 2: The lowest bit of the PSFCH resource allocation information is aligned with reference point A of the SL carrier. When there are multiple carriers, the PSFCH resource may be associated with a corresponding carrier identifier.

[0197] Reference point A may be the location of sl-AbsoluteFrequencyPointA located on the corresponding network side.

[0198] Embodiment 3: The bits of the PSFCH resource allocation information have a specific relationship with the frequency point location of the transmission SSB of the SL carrier. For example, the RBs corresponding to the PSFCH bitmap are centered on the frequency point location of the transmission SSB of the SL carrier and include a total of 275 RBs. When there are multiple carriers, the PSFCH resources may be associated with corresponding carrier identifiers.

[0199] Embodiment 4: The bits of the PSFCH resource allocation information are aligned with the lower boundary of the SL carrier.

[0200] Embodiment 5: The bits of the PSFCH resource allocation information are aligned with the upper boundary of the SL carrier.

[0201] The above content mainly includes the following situations: The bit of the bitmap corresponds to the PSFCH resource of the carrier, and the bit corresponding to the frequency domain resource of the resource pool indicates the PSFCH resource of the resource pool. A bit of the bitmap corresponds to a PSFCH resource of a resource pool, and a bit corresponding to a frequency domain resource of a resource pool indicates a PSFCH resource of the resource pool. The bits of the bitmap correspond to the PSFCH resources of the BWP, and the bits corresponding to the frequency domain resources of the resource pool indicate the PSFCH resources of the resource pool.

[0202] As shown in Figure 7, the lowest bit of Bitmip1 is aligned with the lower boundary of the BWP. The highest bit of Bitmip2 is aligned with the upper boundary of the BWP. The lowest bit of Bitmip3 is aligned with the lower boundary of the carrier. The highest bit of Bitmip4 is aligned with the lower boundary of the carrier.

[0203] Embodiment 5: The PSFCH resource allocation information is indicated by one bitmap with a size of N.

[0204] The value of N is a constant value, which is arranged by the base station or defined by the protocol. N is an integer.

[0205] Assume that the total number of RBs occupied by the resource pool from X to M is K RBs. (Embodiment 1)

[0206] The bits of the bitmap correspond to the PSFCH resources of the resource pool.

[0207] Assume N>K. As shown in Figure 8a, the lowest bit of the PSFCH resource allocation information is neatly aligned with the lower boundary of the resource pool. That is, the RBs corresponding to the bitmap are a total of N RBs from X to m1. In Figure 8a, the resource pool can be regarded as the target resource and the target resource.

[0208] Assume N=K. The bits of the PSFCH resource allocation information are neatly aligned with both the upper and lower boundaries of the resource pool.

[0209] Assume N<K. As shown in Figure 8b, since the size of the bitmap is smaller than the size K of the resource pool, for the resource pool positions that the bitmap cannot correspond to, it is considered that all PSFCH resources exist, or it is considered that none of the PSFCH resources exist. In Figure 8b, the resource pool can be regarded as the target resource and the target resource.

[0210] In all the following embodiments, there are situations where N<K or N=K.

[0211] Embodiment 2: The highest bit of the PSFCH resource allocation information is neatly aligned with the upper boundary of the resource pool. That is, the RBs corresponding to the bitmap are a total of N RBs from x1 to M.

[0212] Embodiment 3: The lowest bit of the PSFCH resource allocation information is aligned with the lower boundary of the BWP. When multiple BWPs exist, the PSFCH resource may be associated with the corresponding BWP ID.

[0213] Embodiment 4: The highest bit of the PSFCH resource allocation information is aligned with the upper boundary of the BWP. When multiple BWPs exist, the PSFCH resource may be associated with the corresponding BWP ID.

[0214] Embodiment 5: The bits of the PSFCH resource allocation information have a specific relationship with the frequency domain position Q of the BWP. For example, the RB corresponding to the PSFCH bitmap is centered on Q and includes a total of N RBs. When there are multiple BWPs, the PSFCH resource may be associated with the corresponding BWP ID.

[0215] Embodiment 6: The lowest bit of the PSFCH resource allocation information is aligned with the reference point of the SL carrier. When there are multiple carriers, the PSFCH resource may be associated with the corresponding carrier identifier.

[0216] Embodiment 7: The bits of the PSFCH resource allocation information have a specific relationship with the frequency point location of the transmission SSB of the SL carrier, for example, the RBs corresponding to the PSFCH bitmap are centered on the frequency point location of the transmission SSB of the SL carrier and include a total of N RBs. When there are multiple carriers, the PSFCH resources may be associated with corresponding carrier identifiers.

[0217] Embodiment 8: The bits of the PSFCH resource allocation information are aligned with the lower boundary of the SL carrier.

[0218] Embodiment 9: The bits of the PSFCH resource allocation information are aligned with the upper boundary of the carrier.

[0219] Embodiment 10: A bitmap of size N of a UE is composed of N1 bitmaps of size N2, and each bitmap of size N2 corresponds to a resource location in one subchannel, where N1*N2=N.

[0220] Example 5 includes the following situations: The bitmap indicates the PSFCH resource in the carrier, and the bit corresponding to the resource pool frequency domain resource indicates the PSFCH resource of the resource pool. Alternatively, the bitmap indicates a PSFCH resource in a resource pool, and the bit corresponding to the frequency domain resource of the resource pool indicates the PSFCH resource of the resource pool. Or, the bitmap indicates the PSFCH resource in the BWP, and the bit corresponding to the frequency domain resource of the resource pool indicates the PSFCH resource of the resource pool.

[0221] As shown in FIG. 9, N=K (size of resource pool) for Bitmip1, N=K2 (size of BWP) for Bitmip2, and N=K3 (size of carrier) for Bitmip3.

[0222] Example 6: Signaling configuration: specific signaling design of PSFCH resource allocation information. (Embodiment 1)

[0223] Step 1: The base station directly indicates to the UE that the size of the resource pool is K, or the size of the BWP is K2, or the size of the carrier is K3. Step 2: The size of the PSFCH resource allocation information bitmap is N=K, K2, or K3, and the UE obtains an indication of whether a PSFCH resource exists according to the indication information of bits K, K2, or K3, where the bits of the PSFCH resource allocation information are aligned with both the upper and lower boundaries of the resource pool.

[0224] The following are possible allocation schemes, in which sl-PSFCH-RB-Set is PSFCH resource allocation information: [Table 1] Here, sl-poolsize-r16 is the number of frequency domain resources included in the resource pool. (Embodiment 2)

[0225] The base station does not directly indicate the size of the UE resource pool, but the UE calculates the resource pool size K according to other configuration parameters, and the size of the PSFCH resource location bitmap is N=K, and the UE obtains the indication of whether a PSFCH resource exists through K bits of indication information, where the PSFCH resource location is aligned with both the upper and lower boundaries of the resource pool.

[0226] The base station does not directly indicate the size of the BWP, but the UE calculates the size K2 of the BWP according to other configuration parameters, where the size N of the PSFCH resource location bitmap is K2, and the UE obtains the indication of whether a PSFCH resource exists through the K2-bit indication information, where the PSFCH resource location is aligned with both the upper and lower boundaries of the BWP.

[0227] The base station does not directly indicate the size of the carrier, and the UE calculates the size of the BWP K3 according to other configuration parameters, and the size of the PSFCH resource location bitmap N=K3, and the UE obtains the indication of whether a PSFCH resource exists through the K3-bit indication information, where the PSFCH resource location is aligned with both the upper and lower boundaries of the carrier. (Embodiment 3)

[0228] A bitmap of size N for a UE consists of N1 bitmaps of size N2, where N1 is the number of subchannels, N2 is the number of resources in one subchannel, and each bitmap of size N2 corresponds to a resource in one subchannel, where N=K, K2, or K3, and N=N1*N2. (Embodiment 4)

[0229] [Table 2] Supported Resource Pool Order (Embodiment 5)

[0230] Since the size of the subchannel is 10, 15, 20, 25, 50, 75 or 100 RB, the number of subchannels included in one resource pool ranges from 1 to 27. [Table 3] where n10, n15, n20, n25, n50, n75, and n100 correspond to the subchannel size, and 1...maxsubchannelNum corresponds to the number of subchannels, where maxsubchannelNum is the largest subchannel number, e.g., 27, and sl-poolsize-r16 is the product of the channel size and the number of channels. Optionally, sl-poolsize-r16=NULL indicates that there is no PSFCH, and the length of the PSFCH configuration information is sl-poolsize-r16. (Embodiment 6)

[0231] [Table 4] Here, n10, n15, n20, n25, n50, n75, and n100 correspond to the subchannel size, and 1..maxsubchannelNum corresponds to the number of subchannels. maxsubchannelNum is the largest number of subchannels, for example, 27. sl-PSFCH-subchannel is a bitmap of PSFCH resources corresponding to a certain subchannel.

[0232] Embodiment 7: PSFCH resource allocation information is configured by a set of parameters.

[0233] the starting position of the RB corresponding to the PSFCH resource; The number of RBs occupied by the PSFCH resource, NUM, Reference RBs corresponding to PSFCH resources, a resource pool identifier corresponding to the PSFCH resource; a starting subchannel corresponding to the PSFCH resource; The resource location of the PSFCH is configured according to at least one parameter of the number of occupied subchannels corresponding to the PSFCH resource.

[0234] When NUM is configured, NUM RBs from the lowest or highest RB of a carrier, BWP or resource pool may be considered as PSFCH, and the lowest or highest may be specified by a protocol.

[0235] When NUM and a reference RB are arranged, NUM RBs from the reference RB of a carrier, BWP, or resource pool may be considered to be PSFCHs.

[0236] In an embodiment of the present invention, the resource location of the PSFCH is indicated by a bitmap of size N, where N is a constant value, and the lower (upper) boundary of the bitmap is aligned with the lower (upper) boundary of the resource pool. The bitmap may also be aligned with the upper (lower) boundary of the BWP or carrier. The number of bits included in the bitmap may be dynamically determined based on the size of the configured resource pool. According to an embodiment of the present invention, the UE can accurately determine the location of the PSFCH resource and send or receive corresponding feedback.

[0237] Please refer to Figure 10, which is a first configuration diagram of a communication device provided by an embodiment of the present invention. The communication device shown in Figure 10 is the first communication device in the above method embodiment. As shown in Figure 10, the communication device 1000: a first determining module 1001 for determining a target PSFCH resource according to the acquired PSFCH resource allocation information, where the target includes at least one of a carrier, a bandwidth portion BWP, and a resource pool, and the PSFCH resource includes at least one of a PSFCH transmission resource and a PSFCH reception resource; a transceiver module 1002 for performing a target operation on feedback information on the PSFCH resource, the target operation including at least one of a receive operation and a transmit operation.

[0238] Optionally, when the PSFCH resource allocation information configures the PSFCH resource according to a bit, there is a first correspondence between the bit of the PSFCH resource allocation information and a frequency domain resource of a target resource, and the target resource is one of a carrier, a BWP, and a resource pool.

[0239] Optionally, the PSFCH resource allocation information includes L bits, where L is: The value of L is equal to a first number, and the first number is the number of actual frequency domain resources of the target resource or the maximum possible number of frequency domain resources of the target resource; L is a positive integer, and Satisfy one of the following.

[0240] Optionally, the first correspondence relationship is: The p+a-th bit of the PSFCH resource allocation information corresponds to the p-th frequency domain resource of the target resource when the frequency domain resources of the target resource are arranged in ascending order of numbers; The p+a-th bit when the bits of the PSFCH resource allocation information are arranged in descending order of numbers corresponds to the p-th frequency domain resource when the frequency domain resources of the target resource are arranged in descending order of numbers; The p+a-th bit of the PSFCH resource allocation information corresponds to the p-th frequency domain resource of the target resource when the frequency domain resources of the target resource are arranged in ascending order of numbers; The p+a-th bit of the PSFCH resource allocation information corresponds to the p-th frequency domain resource of the target resource when the frequency domain resources of the target resource are arranged in ascending order of numbers; The p+a-th bit when the bits of the PSFCH resource allocation information are arranged in ascending order corresponds to a first frequency domain resource in the target resource, and the bits corresponding to the target resource are consecutive; Satisfy one of the following: Here, the value of p is an integer ranging from 1 to K, where K is the number of actual frequency domain resources of the target resource, the value of p+a is an integer ranging from 1 to L, where L is the number of bits included in the PSFCH resource allocation information, and a is a natural number.

[0241] Optionally, the first frequency domain resource comprises: When the target resource is a carrier or a BWP, the first frequency domain resource is a reference resource of the target resource or a specific frequency domain position among at least one frequency domain position for signal block SSB transmission of the target resource; The first frequency domain resource is a center frequency domain resource of the target resource; At least one of the following is satisfied.

[0242] Optionally, the first determination module 1001: a first determining unit for determining a bit corresponding to the target frequency domain resource in the PSFCH resource allocation information as a first target bit; a second determination unit for determining a PSFCH resource in the target object according to a value for each bit in the first target bit; Equipped with When the value of a first bit in the first target bit is a first value, it is determined that a second frequency domain resource corresponding to the first bit in the target object is a PSFCH resource, and when the value of the first bit is a second value, it is determined that the second frequency domain resource is not a PSFCH resource.

[0243] Optionally, when the PSFCH resource allocation information further includes a second target bit other than the first target bit, the communication device 1000: The device further comprises a processing module for ignoring the second target bit.

[0244] Optionally, when the target object further includes a third frequency domain resource, and the third frequency domain resource does not correspond to any bit in the PSFCH resource allocation information, the communication device: The frequency domain resource may further include a second determining module used for either determining that the third frequency domain resource is a PSFCH resource or determining that the third frequency domain resource is not a PSFCH resource.

[0245] Optionally, when the value of L is equal to a first number, and the first number is the number of actual frequency domain resources of the target resource, the communication device 1000: a receiving module for receiving first information, the first information being for indicating an actual number of frequency domain resources of the target resource or a first parameter, the first parameter being used to calculate the actual number of frequency domain resources of the target resource; The first determination module is specifically for determining the target PSFCH resource according to the obtained PSFCH resource allocation information and the first information.

[0246] Optionally, when the value of L is equal to a first number, and the first number is the number of actual frequency domain resources of the target resource, the PSFCH resource allocation information is: a first bitmap or a first bit string having L bits; and N1 second bitmaps or N2 second bitstrings, where N2 bits are included for each second bitmap or each second bitstring, and L=N1×N2.

[0247] Optionally, the target resource includes N1 first resources, and the number of actual frequency domain resources for each of the first resources is equal to N2.

[0248] Optionally, the target resource is: When the target object is a resource pool, the target resource is one of a carrier where the target object is located, a BWP where the target object is located, and a resource pool; When the target object is a BWP, the target resource is a BWP or a carrier where the target object is located; When the target object is a carrier, the target resource is a carrier; At least one of the following is satisfied.

[0249] Optionally, the PSFCH resource allocation information comprises: a starting resource of the target PSFCH resource; The number K of target PSFCH resources; a reference resource of the target PSFCH resource; the target object; a starting subchannel of the target PSFCH resource; the number of subchannels included in the target PSFCH resource; The purpose is to indicate at least one of the following.

[0250] Optionally, the first determining module is specifically for determining K consecutive frequency domain resources from a fifth frequency domain resource among the target frequency domain resources as PSFCH resources; The fifth frequency domain resource is one of the first or last frequency domain resource when the frequency domain resources of the target frequency domain resources are sorted in ascending order of their numbers, the reference resource indicated by the PSFCH resource allocation information, and the start resource indicated by the PSFCH resource allocation information.

[0251] The communication device 1000 can implement each step that the first communication device in the method embodiment of the present invention can implement, and achieve similar beneficial effects, so the description will be omitted here to avoid repetition.

[0252] Please refer to Figure 11, which is a second configuration diagram of a communication device provided by an embodiment of the present invention. The communication device shown in Figure 11 is the second communication device in the above method embodiment. As shown in Figure 11, the communication device 1100: The communication device includes a first sending module 1101 for sending PSFCH resource allocation information to a first communication device, the PSFCH resource allocation information being for determining and allocating PSFCH resources of a target object, the target object including at least one of a carrier, a bandwidth portion BWP, and a resource pool, and the PSFCH resources including at least one of a PSFCH transmission resource and a PSFCH reception resource.

[0253] Optionally, when the PSFCH resource allocation information configures the PSFCH resource according to a bit, there is a first correspondence between the bit of the PSFCH resource allocation information and a frequency domain resource of a target resource, and the target resource is one of a carrier, a BWP, and a resource pool.

[0254] Optionally, the PSFCH resource allocation information includes L bits, where L is: The value of L is equal to a first number, and the first number is the number of actual frequency domain resources of the target resource or the maximum possible number of frequency domain resources of the target resource; L is a positive integer, and Satisfy one of the following.

[0255] Optionally, the first correspondence relationship is: The p+a-th bit of the PSFCH resource allocation information corresponds to the p-th frequency domain resource of the target resource when the frequency domain resources of the target resource are arranged in ascending order of numbers; The p+a-th bit when the bits of the PSFCH resource allocation information are arranged in descending order of numbers corresponds to the p-th frequency domain resource when the frequency domain resources of the target resource are arranged in descending order of numbers; The p+a-th bit of the PSFCH resource allocation information corresponds to the p-th frequency domain resource of the target resource when the frequency domain resources of the target resource are arranged in ascending order of numbers; The p+a-th bit of the PSFCH resource allocation information corresponds to the p-th frequency domain resource of the target resource when the frequency domain resources of the target resource are arranged in ascending order of numbers; The p+a-th bit when the bits of the PSFCH resource allocation information are arranged in ascending order corresponds to a first frequency domain resource in the target resource, and the bits corresponding to the target resource are consecutive; Satisfy one of the following: Here, the value of p is an integer ranging from 1 to K, where K is the number of actual frequency domain resources of the target resource, the value of p+a is an integer ranging from 1 to L, where L is the number of bits included in the PSFCH resource allocation information, and a is a natural number.

[0256] Optionally, the first frequency domain resource comprises: When the target resource is a carrier or a BWP, the first frequency domain resource is a reference resource of the target resource or a specific frequency domain position among at least one frequency domain position for signal block SSB transmission of the target resource; The first frequency domain resource is a center frequency domain resource of the target resource; At least one of the following is satisfied.

[0257] Optionally, when the value of L is equal to a first number, and the first number is the number of actual frequency domain resources of the target resource, the communication device 1100: The communication device further includes a second transmitting module for transmitting first information to the first communication device, the first information being for indicating an actual number of frequency domain resources of the target resource or a first parameter, the first parameter being used to calculate the actual number of frequency domain resources of the target resource.

[0258] Optionally, when the value of L is equal to a first number, and the first number is the number of actual frequency domain resources of the target resource, the PSFCH resource allocation information is: a first bitmap or a first bit string having L bits; and N1 second bitmaps or N2 second bitstrings, where N2 bits are included for each second bitmap or each second bitstring, and L=N1×N2.

[0259] Optionally, the target resource includes N1 first resources, and the number of actual frequency domain resources for each of the first resources is equal to N2.

[0260] Optionally, the target resource is: When the target object is a resource pool, the target resource is one of a carrier where the target object is located, a BWP where the target object is located, and a resource pool; When the target object is a BWP, the target resource is a BWP or a carrier where the target object is located; When the target object is a carrier, the target resource is a carrier; At least one of the following is satisfied.

[0261] Optionally, the PSFCH resource allocation information comprises: a starting resource of the target PSFCH resource; The number K of target PSFCH resources; a reference resource of the target PSFCH resource; the target object; a starting subchannel of the target PSFCH resource; the number of subchannels included in the target PSFCH resource; The purpose is to indicate at least one of the following.

[0262] The communication device 1100 can implement each step that the second communication device in the method embodiment of the present invention can implement, and achieve similar beneficial effects, so the description will be omitted here to avoid repetition.

[0263] Referring to FIG. 12, FIG. 12 is a third configuration diagram of a communication device provided by an embodiment of the present invention. As shown in FIG. 12, the communication device 1200 includes a processor 1201, a memory 1202, a user interface 1203, a transceiver 1204 and a bus interface.

[0264] Here, in an embodiment of the present invention, the communication device 1200 further comprises a computer program stored in the memory 1202 and executable on the processor 1201 .

[0265] (1) The communication device 1200 is the first communication device in the above method embodiment.

[0266] When the computer program is executed by the processor 1201, determining a target PSFCH resource according to the obtained PSFCH resource allocation information, where the target includes at least one of a carrier, a bandwidth portion BWP, and a resource pool, and the PSFCH resource includes at least one of a PSFCH transmission resource and a PSFCH reception resource; performing, by the transceiver 1204, targeted operations on the feedback information on the PSFCH resource, the targeted operations including at least one of a receive operation and a transmit operation; Achieve this.

[0267] Optionally, when the PSFCH resource allocation information configures the PSFCH resource according to a bit, there is a first correspondence between the bit of the PSFCH resource allocation information and a frequency domain resource of a target resource, and the target resource is one of a carrier, a BWP, and a resource pool.

[0268] Optionally, the PSFCH resource allocation information includes L bits, where L is: The value of L is equal to a first number, and the first number is the number of actual frequency domain resources of the target resource or the maximum possible number of frequency domain resources of the target resource; L is a positive integer, and Satisfy one of the following.

[0269] Optionally, the first correspondence relationship is: The p+a-th bit of the PSFCH resource allocation information corresponds to the p-th frequency domain resource of the target resource when the frequency domain resources of the target resource are arranged in ascending order of numbers; The p+a-th bit when the bits of the PSFCH resource allocation information are arranged in descending order of numbers corresponds to the p-th frequency domain resource when the frequency domain resources of the target resource are arranged in descending order of numbers; The p+a-th bit of the PSFCH resource allocation information corresponds to the p-th frequency domain resource of the target resource when the frequency domain resources of the target resource are arranged in ascending order of numbers; The p+a-th bit of the PSFCH resource allocation information corresponds to the p-th frequency domain resource of the target resource when the frequency domain resources of the target resource are arranged in ascending order of numbers; The p+a-th bit when the bits of the PSFCH resource allocation information are arranged in ascending order corresponds to a first frequency domain resource in the target resource, and the bits corresponding to the target resource are consecutive; Satisfy one of the following: Here, the value of p is an integer ranging from 1 to K, where K is the number of actual frequency domain resources of the target resource, the value of p+a is an integer ranging from 1 to L, where L is the number of bits included in the PSFCH resource allocation information, and a is a natural number.

[0270] Optionally, the first frequency domain resource comprises: When the target resource is a carrier or a BWP, the first frequency domain resource is a reference resource of the target resource or a specific frequency domain position among at least one frequency domain position for signal block SSB transmission of the target resource; The first frequency domain resource is a center frequency domain resource of the target resource; At least one of the following is satisfied.

[0271] Optionally, the computer program when executed by the processor 1201 further determining a bit corresponding to the target frequency domain resource in the PSFCH resource allocation information as a first target bit; determining a PSFCH resource in the target object according to a value for each bit in the first target bit; This can be achieved, When the value of a first bit in the first target bit is a first value, it is determined that a second frequency domain resource corresponding to the first bit in the target object is a PSFCH resource, and when the value of the first bit is a second value, it is determined that the second frequency domain resource is not a PSFCH resource.

[0272] Optionally, when the PSFCH resource allocation information further includes a second target bit other than the first target bit, when the computer program is executed by the processor 1201, the computer program further comprises: The step of ignoring the second target bit can be implemented.

[0273] Optionally, when the target object further includes a third frequency domain resource, and the third frequency domain resource does not correspond to any bit in the PSFCH resource allocation information, when the computer program is executed by the processor 1201, the computer program can further achieve one of: determining that the third frequency domain resource is a PSFCH resource; or determining that the third frequency domain resource is not a PSFCH resource.

[0274] Optionally, when the value of L is equal to a first number, and the first number is the number of actual frequency domain resources of the target resource, when the computer program is executed by the processor 1201, the computer program further comprises: receiving first information by a transceiver 1204, the first information being for indicating a number of actual frequency domain resources of the target resource or a first parameter, the first parameter being used to calculate the number of actual frequency domain resources of the target resource; determining the target PSFCH resource according to the obtained PSFCH resource allocation information and the first information; This can be achieved.

[0275] Optionally, when the value of L is equal to a first number, and the first number is the number of actual frequency domain resources of the target resource, the PSFCH resource allocation information is: a first bitmap or a first bit string having L bits; and N1 second bitmaps or N2 second bitstrings, where N2 bits are included for each second bitmap or each second bitstring, and L=N1×N2.

[0276] Optionally, the target resource includes N1 first resources, and the number of actual frequency domain resources for each of the first resources is equal to N2.

[0277] Optionally, the target resource is: When the target object is a resource pool, the target resource is one of a carrier where the target object is located, a BWP where the target object is located, and a resource pool; When the target object is a BWP, the target resource is a BWP or a carrier where the target object is located; When the target object is a carrier, the target resource is a carrier; At least one of the following is satisfied.

[0278] Optionally, the PSFCH resource allocation information comprises: a starting resource of the target PSFCH resource; The number K of target PSFCH resources; a reference resource of the target PSFCH resource; the target object; a starting subchannel of the target PSFCH resource; the number of subchannels included in the target PSFCH resource; The purpose is to indicate at least one of the following.

[0279] Optionally, the computer program when executed by the processor 1201 further determining K consecutive frequency domain resources from a fifth frequency domain resource among the target frequency domain resources as PSFCH resources; The fifth frequency domain resource is one of the first or last frequency domain resource when the frequency domain resources of the target frequency domain resources are sorted in ascending order of their numbers, the reference resource indicated by the PSFCH resource allocation information, and the start resource indicated by the PSFCH resource allocation information.

[0280] In such a case, the communication device 1200 can implement each step implemented by the first communication device in the above method embodiment, and the description will be omitted here to avoid repetition.

[0281] (2) The communication device 1200 is the second communication device in the above method embodiment.

[0282] When the computer program is executed by the processor 1201, A step of sending PSFCH resource allocation information to a first communication device by a transceiver 1204 is realized, the PSFCH resource allocation information is for determining and allocating target PSFCH resources, the target includes at least one of a carrier, a bandwidth portion BWP, and a resource pool, and the PSFCH resources include at least one of a PSFCH transmission resource and a PSFCH reception resource.

[0283] Optionally, when the PSFCH resource allocation information configures the PSFCH resource according to a bit, there is a first correspondence between the bit of the PSFCH resource allocation information and a frequency domain resource of a target resource, and the target resource is one of a carrier, a BWP, and a resource pool.

[0284] Optionally, the PSFCH resource allocation information includes L bits, where L is: The value of L is equal to a first number, and the first number is the number of actual frequency domain resources of the target resource or the maximum possible number of frequency domain resources of the target resource; L is a positive integer, and Satisfy one of the following.

[0285] Optionally, the first correspondence relationship is: The p+a-th bit of the PSFCH resource allocation information corresponds to the p-th frequency domain resource of the target resource when the frequency domain resources of the target resource are arranged in ascending order of numbers; The p+a-th bit when the bits of the PSFCH resource allocation information are arranged in descending order of numbers corresponds to the p-th frequency domain resource when the frequency domain resources of the target resource are arranged in descending order of numbers; The p+a-th bit of the PSFCH resource allocation information corresponds to the p-th frequency domain resource of the target resource when the frequency domain resources of the target resource are arranged in ascending order of numbers; The p+a-th bit of the PSFCH resource allocation information corresponds to the p-th frequency domain resource of the target resource when the frequency domain resources of the target resource are arranged in ascending order of numbers; The p+a-th bit when the bits of the PSFCH resource allocation information are arranged in ascending order corresponds to a first frequency domain resource in the target resource, and the bits corresponding to the target resource are consecutive; Satisfy one of the following: Here, the value of p is an integer ranging from 1 to K, where K is the number of actual frequency domain resources of the target resource, the value of p+a is an integer ranging from 1 to L, where L is the number of bits included in the PSFCH resource allocation information, and a is a natural number.

[0286] Optionally, the first frequency domain resource comprises: When the target resource is a carrier or a BWP, the first frequency domain resource is a reference resource of the target resource or a specific frequency domain position among at least one frequency domain position for signal block SSB transmission of the target resource; The first frequency domain resource is a center frequency domain resource of the target resource; At least one of the following is satisfied.

[0287] Optionally, when the value of L is equal to a first number, and the first number is the number of actual frequency domain resources of the target resource, when the computer program is executed by the processor 1201, the computer program further comprises: The transceiver 1204 can implement a step of transmitting first information to the first communication device, where the first information is for indicating the actual number of frequency domain resources of the target resource or a first parameter, and the first parameter is used to calculate the actual number of frequency domain resources of the target resource.

[0288] Optionally, when the value of L is equal to a first number, and the first number is the number of actual frequency domain resources of the target resource, the PSFCH resource allocation information is: a first bitmap or a first bit string having L bits; and N1 second bitmaps or N2 second bitstrings, where N2 bits are included for each second bitmap or each second bitstring, and L=N1×N2.

[0289] Optionally, the target resource includes N1 first resources, and the number of actual frequency domain resources for each of the first resources is equal to N2.

[0290] Optionally, the target resource is: When the target object is a resource pool, the target resource is one of a carrier where the target object is located, a BWP where the target object is located, and a resource pool; When the target object is a BWP, the target resource is a BWP or a carrier where the target object is located; When the target object is a carrier, the target resource is a carrier; At least one of the following is met.

[0291] Optionally, the PSFCH resource allocation information comprises: a starting resource of the target PSFCH resource; The number K of target PSFCH resources; a reference resource of the target PSFCH resource; the target object; a starting subchannel of the target PSFCH resource; the number of subchannels included in the target PSFCH resource; The purpose is to indicate at least one of the following.

[0292] In such a case, the communication device 1200 may implement each step implemented by the second communication device in the above method embodiment, and the description will be omitted here to avoid repetition.

[0293] In FIG. 12 , the bus architecture may include any number of interconnected buses and bridges, specifically, one or more processors, such as processor 1201, and memory, such as memory 1202, connected together by various circuits. The bus architecture may also connect together various other circuits, such as peripherals, voltage regulators, and power management circuits, all of which are well known in the art and will not be further described herein. The bus interface provides an interface. The transceiver 1204 may be multiple components including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium. Depending on the user equipment, the user interface 1203 may be an interface that allows necessary devices to be connected externally or internally, and connected devices may include, but are not limited to, a keypad, a display, a speaker, a microphone, a control lever, etc.

[0294] The processor 1201 is responsible for managing the bus architecture and general processing, and the memory 1202 can store data used by the processor 2601 when performing operations.

[0295] An embodiment of the present invention further provides a computer-readable storage medium storing a computer program, which, when executed by a processor, can implement the steps of the above-mentioned embodiment of the PSFCH resource determination method or the above-mentioned embodiment of the PSFCH resource allocation method and achieve similar technical effects, and description thereof will be omitted herein to avoid repetition. Here, the computer-readable storage medium may be, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, an optical disk, etc.

[0296] It should be noted that, as used herein, the terms "comprise," "consist of," or any other variation thereof, are intended to include a non-exclusive inclusion, whereby a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not expressly stated or inherent in such process, method, article, or apparatus. Unless otherwise specified, an element qualified by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

[0297] Those skilled in the art will clearly understand that, for the sake of simplicity and brevity, the specific operating processes of the above-described systems, devices and units can be referred to the corresponding processes in the method embodiments, and will not be described here.

[0298] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be realized in other forms. For example, the device embodiments described above are merely illustrative, and the division of the units is merely a division of logical functions, and may be divided in other forms when actually implemented. For example, multiple units or components may be combined or integrated into another system, or some features may be omitted or not implemented. Furthermore, the illustrated or described couplings, direct couplings, or communication connections may be indirect couplings or communication connections via several interfaces, devices, or units, and may be in electrical, mechanical, or other forms.

[0299] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, and may be located in one place or distributed across multiple network units. Some or all of the units can be selected according to actual needs to achieve the objectives of the solution of this embodiment.

[0300] Furthermore, each functional unit in each embodiment of the present disclosure may be integrated into a single processing unit, may exist physically independently, or may be integrated into two or more units into a single unit.

[0301] From the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be realized in the form of a combination of software and a necessary common hardware platform, and of course, they can also be realized by hardware, but in many cases the former is a more preferred embodiment. Based on this view, the technical solutions of the present invention can be substantially embodied in software, or the part that contributes to the prior art can be embodied in software, and the computer software product is stored in a storage medium (e.g., ROM / RAM, magnetic disk, optical disk) and includes a plurality of instructions that cause a terminal (which may be a mobile phone, computer, server, air conditioner, network device, etc.) to execute the methods described in each embodiment of the present invention.

[0302] Those skilled in the art can understand that all or part of the processes for implementing the methods of the above embodiments can be completed by controlling related hardware through a computer program, and the program can be stored in a computer-readable storage medium, which, when executed, can include the processes of the above method embodiments. The storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), a random access memory (RAM), etc.

[0303] It is understood that the embodiments described in the embodiments of the present disclosure can be realized by hardware, software, firmware, middleware, microcode, or a combination thereof. Regarding the hardware realization, the modules, units, and subunits can be realized in one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSP Devices, DSPDs), Programmable Logic Devices (PLDs), Field-Programmable Gate Arrays (FPGAs), common processors, controllers, microcontrollers, microprocessors, other electronic units, or a combination thereof, for performing the functions described in the present disclosure.

[0304] For software implementation, the techniques described in the embodiments of the present disclosure can be implemented by modules (e.g., processes, functions, etc.) for performing the functions described in the embodiments of the present disclosure. The software code can be stored in a memory and executed by a processor. The memory can be implemented within the processor or external to the processor.

[0305] Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the above-mentioned specific embodiments, which are merely illustrative and not limiting. Based on the teachings of the present invention, many forms that a person skilled in the art can make without departing from the spirit of the present invention and the scope of protection of the claims are all within the scope of protection of the present invention.

Claims

1. 1. A method for determining a physical sidelink feedback channel (PSFCH) resource performed in a first communication device, comprising: determining a target PSFCH resource according to the acquired PSFCH resource allocation information, wherein the target includes at least one of a carrier, a bandwidth portion BWP, and a resource pool, and the PSFCH resource includes at least one of a PSFCH transmission resource and a PSFCH reception resource; performing a target operation on the feedback information on the PSFCH resource, the target operation including at least one of a receive operation and a transmit operation; Including, When the PSFCH resource allocation information configures the PSFCH resource according to a bit, there is a first correspondence between the bit of the PSFCH resource allocation information and a frequency domain resource of a target resource, and the target resource is one of a carrier, a BWP, and a resource pool; The PSFCH resource allocation information includes a description field, and the description field It represents one group of physical resource blocks (PRBs) actually used for PSFCH transmission and reception, and the first PRB is used to represent the lowest RB index of the subchannel with the lowest index in the resource pool. a group of PRBs actually used for PSFCH transmission and reception, the leftmost bit of which corresponds to the RB with the lowest index in the resource pool.

2. The PSFCH resource allocation information includes L bits, where L is the value of L is equal to a first number, and the first number is the number of actual frequency domain resources of the target resource or the maximum possible number of frequency domain resources of the target resource; L is a positive integer; and and / or The target resource is When the target object is a resource pool, the target resource is one of a carrier where the target object is located, a BWP where the target object is located, and a resource pool; When the target object is a BWP, the target resource is a BWP or a carrier where the target object is located; When the target object is a carrier, the target resource is a carrier; The method according to claim 1 , wherein at least one of the following conditions is satisfied:

3. The first correspondence relationship is The p+a-th bit of the PSFCH resource allocation information corresponds to the p-th frequency domain resource of the target resource when the frequency domain resources of the target resource are arranged in ascending order of numbers; The p+a-th bit when the bits of the PSFCH resource allocation information are arranged in descending order of numbers corresponds to the p-th frequency domain resource when the frequency domain resources of the target resource are arranged in descending order of numbers; The p+a-th bit when the bits of the PSFCH resource allocation information are arranged in ascending order corresponds to the p-th frequency domain resource when the frequency domain resources of the target resource are arranged in descending order; The p+a-th bit when the bits of the PSFCH resource allocation information are arranged in ascending order corresponds to the p-th frequency domain resource when the frequency domain resources of the target resource are arranged in descending order; The p+a-th bit when the bits of the PSFCH resource allocation information are arranged in ascending order corresponds to a first frequency domain resource in the target resource, and the bits corresponding to the target resource are consecutive; The p+a-th bit when the bits of the PSFCH resource allocation information are arranged in descending order of number corresponds to a first frequency domain resource in the target resource, and the bits corresponding to the target resource are consecutive; Satisfy one of the following: The method of claim 1, wherein p is an integer ranging from 1 to K, where K is the number of actual frequency domain resources of the target resource, p+a is an integer ranging from 1 to L, where L is the number of bits included in the PSFCH resource allocation information, and a is a natural number.

4. The first frequency domain resource is When the target resource is a carrier or a BWP, the first frequency domain resource is a reference resource of the target resource or a specific frequency domain location among at least one frequency domain location for signal block SSB transmission of the target resource; the first frequency domain resource is a center frequency domain resource of the target resource; The method according to claim 3, wherein at least one of the following conditions is satisfied.

5. The step of determining a PSFCH resource in a target object according to the obtained PSFCH resource allocation information includes: determining a bit corresponding to the target frequency domain resource in the PSFCH resource allocation information as a first target bit; determining a PSFCH resource in the target object according to a value for each bit in the first target bits; Including, 2. The method of claim 1, further comprising: determining that a second frequency domain resource corresponding to the first bit of the target object is a PSFCH resource when a value of a first bit in the first target bits is a first value; and determining that the second frequency domain resource is not a PSFCH resource when a value of the first bit is a second value.

6. When the PSFCH resource allocation information further includes a second target bit other than the first target bit, ignoring the second target bit. or When the target object further includes a third frequency domain resource, and the third frequency domain resource does not correspond to any bit in the PSFCH resource allocation information, determining that the third frequency domain resource is a PSFCH resource; determining that the third frequency domain resource is not a PSFCH resource; The method of claim 5 , further comprising any one of:

7. When the value of L is equal to a first number, and the first number is the number of actual frequency domain resources of the target resource, before determining the target PSFCH resource according to the obtained PSFCH resource allocation information, receiving first information, the first information being for indicating a number of actual frequency domain resources of the target resource or a first parameter, the first parameter being used to calculate the number of actual frequency domain resources of the target resource; Further comprising: The step of determining a target PSFCH resource according to the acquired PSFCH resource allocation information includes: determining the target PSFCH resource according to the acquired PSFCH resource allocation information and the first information; or When the value of L is equal to a first number, and the first number is the number of actual frequency domain resources of the target resource, the PSFCH resource allocation information is a first bitmap or a first bit string having L bits; and N1 second bitmaps or N2 second bit strings, wherein N2 bits are included for each second bitmap or each second bit string, and L=N1×N2; The method of claim 2 , wherein the target resource includes N1 first resources, and the number of actual frequency domain resources for each of the first resources is equal to N2.

8. The PSFCH resource allocation information a starting resource of the target PSFCH resource; a reference resource of the target PSFCH resource; the target object; a starting subchannel of the target PSFCH resource; the number of subchannels included in the target PSFCH resource; and The method of claim 1 , wherein the method is for indicating at least one of:

9. A method for arranging PSFCH resources performed in a second communication device, comprising: The second communication device includes a step of transmitting PSFCH resource allocation information to the first communication device, and the first communication device determining a target PSFCH resource according to the acquired PSFCH resource allocation information, wherein the target includes at least one of a carrier, a bandwidth portion BWP, and a resource pool, and the PSFCH resource includes at least one of a PSFCH transmission resource and a PSFCH reception resource; When the PSFCH resource allocation information configures the PSFCH resource according to a bit, there is a first correspondence between the bit of the PSFCH resource allocation information and a frequency domain resource of a target resource, and the target resource is one of a carrier, a BWP, and a resource pool; The PSFCH resource allocation information includes a description field, and the description field It represents one group of physical resource blocks (PRBs) actually used for PSFCH transmission and reception, and the first PRB is used to represent the lowest RB index of the subchannel with the lowest index in the resource pool. represents a group of PRBs actually used for PSFCH transmission and reception, with the leftmost bit corresponding to the RB with the lowest index in the resource pool.

10. The PSFCH resource allocation information includes L bits, where L is the value of L is equal to a first number, and the first number is the number of actual frequency domain resources of the target resource or the maximum possible number of frequency domain resources of the target resource; L is a positive integer; and The method according to claim 9, wherein any one of the following conditions is satisfied:

11. The first correspondence relationship is The p+a-th bit of the PSFCH resource allocation information corresponds to the p-th frequency domain resource of the target resource when the frequency domain resources of the target resource are arranged in ascending order of numbers; The p+a-th bit when the bits of the PSFCH resource allocation information are arranged in descending order of numbers corresponds to the p-th frequency domain resource when the frequency domain resources of the target resource are arranged in descending order of numbers; The p+a-th bit when the bits of the PSFCH resource allocation information are arranged in ascending order corresponds to the p-th frequency domain resource when the frequency domain resources of the target resource are arranged in descending order; The p+a-th bit when the bits of the PSFCH resource allocation information are arranged in ascending order corresponds to the p-th frequency domain resource when the frequency domain resources of the target resource are arranged in descending order; The p+a-th bit when the bits of the PSFCH resource allocation information are arranged in ascending order corresponds to a first frequency domain resource in the target resource, and the bits corresponding to the target resource are consecutive; Satisfy one of the following:

10. The method of claim 9, wherein p is an integer ranging from 1 to K, where K is the number of actual frequency domain resources of the target resource, p+a is an integer ranging from 1 to L, where L is the number of bits included in the PSFCH resource allocation information, and a is a natural number.

12. The first frequency domain resource is When the target resource is a carrier or a BWP, the first frequency domain resource is a reference resource of the target resource or a specific frequency domain location among at least one frequency domain location for signal block SSB transmission of the target resource; the first frequency domain resource is a center frequency domain resource of the target resource; The method according to claim 11, wherein at least one of the following is satisfied.

13. The step of determining a target PSFCH resource comprises: determining a bit corresponding to the target frequency domain resource in the PSFCH resource allocation information as a first target bit; determining the target PSFCH resource according to a value for each bit in the first target bits; Including, 10. The method of claim 9, further comprising: determining that a second frequency domain resource corresponding to the first bit of the target object is a PSFCH resource when a value of a first bit in the first target bits is a first value; and determining that the second frequency domain resource is not a PSFCH resource when a value of the first bit is a second value.

14. When the value of L is equal to a first number, and the first number is the number of actual frequency domain resources of the target resource, or transmitting first information to the first communication device, the first information being for indicating the number of actual frequency domain resources of the target resource or a first parameter, the first parameter being used to calculate the number of actual frequency domain resources of the target resource; or When the value of L is equal to a first number, and the first number is the number of actual frequency domain resources of the target resource, the PSFCH resource allocation information is a first bitmap or a first bit string having L bits; and N1 second bitmaps or N2 second bit strings, wherein N2 bits are included for each second bitmap or each second bit string, and L=N1×N2; The method of claim 10 , wherein the target resource includes N1 first resources, and the number of actual frequency domain resources for each of the first resources is equal to N2.

15. The target resource is When the target object is a resource pool, the target resource is one of a carrier where the target object is located, a BWP where the target object is located, and a resource pool; When the target object is a BWP, the target resource is a BWP or a carrier where the target object is located; When the target object is a carrier, the target resource is a carrier; The method according to claim 9, wherein at least one of the following is satisfied.

16. The PSFCH resource allocation information a starting resource of the target PSFCH resource; a reference resource of the target PSFCH resource; the target object; a starting subchannel of the target PSFCH resource; the number of subchannels included in the target PSFCH resource; and 10. The method of claim 9, wherein the method is for indicating at least one of:

17. 17. A communications device comprising: a processor; a memory; and a computer program stored in the memory and executable on the processor, the computer program, when executed by the processor, implementing steps of the method for determining a physical sidelink feedback channel (PSFCH) resource according to any one of claims 1 to 8 or implementing steps of the method for configuring a physical sidelink feedback channel (PSFCH) resource according to any one of claims 9 to 16.

18. 17. A computer-readable storage medium having stored thereon a computer program, the computer program being configured, when executed by a processor, to implement the steps of the method for determining physical sidelink feedback channel (PSFCH) resources according to any one of claims 1 to 8 or the method for configuring physical sidelink feedback channel (PSFCH) resources according to any one of claims 9 to 16.

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