Resource determination method and apparatus, and storage medium

Abstract

The present disclosure provides a resource determination method and apparatus, and a storage medium. The resource determination method comprises: receiving a PSSCH in a resource pool, wherein one resource pool comprises at least one resource block set in a frequency domain, one resource block set comprises at least one sub-channel, and one sub-channel comprises a plurality of resource blocks; determining mapping relationships between sub-channels and PSFCH resources, any one of the sub-channels and a resource block corresponding to a PSFCH resource to which the sub-channel is mapped being located in a same resource block set; and, on the basis of the mapping relationships between the sub-channels and the PSFCH resources, determining a PSFCH resource to which at least one sub-channel comprised in the PSSCH is mapped.

Description

Resource determination method and device, and storage medium

[0001] This disclosure claims priority to Chinese patent application No. 202310943017.X, filed on July 28, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the field of communication technologies, and in particular to a resource determination method and device, and a storage medium. Background Art

[0003] Edge link communication is a mode of communication conducted directly between devices, bypassing the core network. In this mode, devices can exchange data, control information, and other auxiliary information directly, conserving wireless spectrum resources and reducing the data transmission pressure on the core network. This reduces system resource usage, increases the spectrum efficiency of cellular communication systems, reduces communication latency, and significantly reduces network operating costs.

[0004] In sidelink communications, the Physical Sidelink Feedback Channel (PSFCH) is used to transmit feedback information related to communication quality, interference conditions, resource allocation, etc. between communication devices.

[0005] Summary of the Invention

[0006] In one aspect, a resource determination method is provided, which is applied to a first communication device. The resource determination method includes:

[0007] Receiving a physical side link shared channel (PSSCH) in a resource pool; wherein the resource pool includes at least one resource block set in the frequency domain, each resource block set in the at least one resource block set includes at least one subchannel, and each subchannel in the at least one subchannel includes a plurality of resource blocks;

[0008] Determine the mapping relationship between subchannels and physical side link feedback channel (PSFCH) resources, where each subchannel and the resource blocks corresponding to its mapped PSFCH resources are located in the same resource block set;

[0009] Based on the mapping relationship between the sub-channel and the PSFCH resource, the PSFCH resource to which at least one sub-channel included in the PSSCH is mapped is determined.

[0010] In another aspect, a resource determination method is provided, which is applied to a second communication device. The resource determination method includes:

[0011] A physical side link shared channel (PSSCH) is transmitted in a resource pool; wherein the resource pool includes at least one resource block set in the frequency domain, each resource block set in the at least one resource block set includes at least one subchannel, and each subchannel in the at least one subchannel includes a plurality of resource blocks;

[0012] Determine the mapping relationship between subchannels and physical side link feedback channel (PSFCH) resources, where each subchannel and the resource blocks corresponding to its mapped PSFCH resources are located in the same resource block set;

[0013] Based on the mapping relationship between the sub-channel and the PSFCH resource, the PSFCH resource to which at least one sub-channel included in the PSSCH is mapped is determined.

[0014] In another aspect, a resource determination apparatus is provided, which is applied to a first communication device. The resource determination apparatus includes:

[0015] The communication module receives a physical side link shared channel (PSSCH) in a resource pool; wherein the resource pool includes at least one resource block set in the frequency domain, each resource block set in the at least one resource block set includes at least one subchannel, and each subchannel in the at least one subchannel includes a plurality of resource blocks;

[0016] A processing module is used to determine the mapping relationship between subchannels and physical side link feedback channel PSFCH resources, where the resource blocks corresponding to each subchannel and its mapped PSFCH resources are located in the same resource block set;

[0017] The processing module is further configured to determine a PSFCH resource mapped to at least one sub-channel included in the PSSCH based on a mapping relationship between the sub-channel and the PSFCH resource.

[0018] In another aspect, a resource determination apparatus is provided, which is applied to a second communication device. The resource determination apparatus includes:

[0019] The communication module transmits a physical side link shared channel (PSSCH) in a resource pool; wherein the resource pool includes at least one resource block set in the frequency domain, each resource block set in the at least one resource block set includes at least one subchannel, and each subchannel in the at least one subchannel includes a plurality of resource blocks;

[0020] A processing module is used to determine the mapping relationship between subchannels and physical side link feedback channel PSFCH resources, where the resource blocks corresponding to each subchannel and its mapped PSFCH resources are located in the same resource block set;

[0021] The processing module is further configured to determine a PSFCH resource mapped to at least one sub-channel included in the PSSCH based on a mapping relationship between the sub-channel and the PSFCH resource.

[0022] In yet another aspect, a communication device is provided, comprising: a memory and a processor; the memory and the processor are coupled; the memory is configured to store computer program instructions executable by the processor; and the processor implements the resource determination method described in any of the above aspects when executing the computer program instructions.

[0023] On the other hand, a computer-readable storage medium is provided, on which computer program instructions are stored. When the computer program instructions are executed on a communication device, the resource determination method described in any one of the above aspects is implemented.

[0024] In yet another aspect, a computer program product is provided, comprising computer program instructions, which implement the resource determination method described in any one of the above aspects when executed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG1 is a schematic diagram of the architecture of a communication system according to some embodiments of the present disclosure.

[0026] FIG2 is a flowchart of a resource determination method according to some embodiments of the present disclosure.

[0027] FIG3 is a diagram illustrating a mapping relationship between subchannels and PSFCH resources according to some embodiments of the present disclosure.

[0028] FIG4 is a diagram illustrating another mapping relationship between subchannels and PSFCH resources according to some embodiments of the present disclosure.

[0029] FIG5 is a diagram illustrating another mapping relationship between subchannels and PSFCH resources according to some embodiments of the present disclosure.

[0030] FIG6 is a diagram illustrating the association between a PSFCH time slot / opportunity and a PSSCH slot (time slot) according to some embodiments of the present disclosure.

[0031] FIG7 is a flowchart of a communication interaction according to some embodiments of the present disclosure.

[0032] FIG8 is a flowchart of another resource determination method according to some embodiments of the present disclosure.

[0033] FIG9 is a schematic structural diagram of a resource determination device according to some embodiments of the present disclosure.

[0034] FIG10 is a schematic structural diagram of another resource determination device according to some embodiments of the present disclosure.

[0035] FIG11 is a schematic structural diagram of a communication device according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0036] To enable those skilled in the art to better understand the technical solutions of the embodiments of the present disclosure, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0037] In the description of the present disclosure, unless otherwise specified, " / " means "or", for example, A / B can mean A or B. "And / or" in this article is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: only A, only B, and A and B. In addition, "at least one" means one or more, and "a plurality" means two or more. Words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit them to be different.

[0038] It should be noted that, in this disclosure, words such as "exemplarily" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described in this disclosure as "exemplarily" or "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of "exemplarily" or "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplarily" or "for example" is intended to present the relevant concepts in a concrete way.

[0039] In an edge link communication system, when services need to be transmitted between communication devices, the services between the communication devices do not pass through the network side, that is, they are not forwarded through the cellular link between the communication device and the base station. Instead, they are directly transmitted from the data source communication device to the target communication device via the edge link. This mode of direct communication between communication devices is significantly different from the characteristics of the communication mode of traditional cellular systems. Typical applications of edge link communication include device-to-device (D2D) communication and vehicle-to-everything (V2X) communication. V2X communication includes vehicle-to-vehicle (V2V), vehicle-to-pedestrian (V2P), and vehicle-to-infrastructure (V2I).

[0040] For short-range communication devices that can apply edge-link communication, edge-link communication not only saves wireless spectrum resources, but also reduces the data transmission pressure of the core network. It can reduce system resource usage, increase the spectrum efficiency of the cellular communication system, reduce communication latency, and save network operating costs to a great extent.

[0041] In unlicensed spectrum, only channels that successfully listen before talk (LBT) can transmit. LBT requires communication nodes to compete for time-frequency resources. Only after successfully competing for them can they transmit on those time-frequency resources. More specifically, in the LBT mechanism, before transmitting, a communication node first monitors the channel for idleness during the channel access process. Only when the channel is idle can the node transmit.

[0042] In sidelink communication, the Physical Sidelink Shared Channel (PSSCH) is used to carry data of communication devices in sidelink communication and supports direct communication between communication devices. PSSCH provides high-speed and reliable data transmission at the physical layer. Multiple communication devices can transmit their own PSSCHs at the same time. Each communication device transmits PSSCH in one or more time slots. When a communication device transmits a PSSCH in a time slot, it can retransmit the PSSCH or transmit another PSSCH in another time slot. A PSSCH transmitted by a communication device in a time slot is transmitted through multiple sub-channels in the frequency domain. A sub-channel includes one or more resource blocks.

[0043] The PSFCH is used to transmit feedback information related to communication quality, interference conditions, resource allocation, etc. between communication devices. This feedback information can be used to optimize resource allocation / selection, beamforming, and interference management.

[0044] Currently, in the 3GPP standard, the determination of PSFCH resources mainly considers the determination of PSFCH resources in the Intelligent Transportation System (ITS) spectrum and the licensed spectrum. However, there is no clear method for determining PSFCH resources when side links use unlicensed spectrum.

[0045] In view of this, the present disclosure provides a resource determination method. By receiving PSSCH in a resource pool, the mapping relationship between subchannels and physical side link feedback channel (PSFCH) resources is determined. Then, based on the mapping relationship between subchannels and PSFCH resources, the PSFCH resources mapped to at least one subchannel contained in the PSSCH are determined, thereby solving the problem of determining PSFCH resources in unlicensed spectrum. The resource blocks corresponding to a subchannel and its mapped PSFCH resources are located in the same resource block set, which is conducive to COT (Channel Occupy Time) sharing between communication devices and is conducive to communication devices transmitting PSFCH obtaining the right to use the time-frequency resources of the unlicensed spectrum.

[0046] The technical solutions provided in the embodiments of the present disclosure can be applied to various mobile communication networks, for example, new radio (NR) mobile communication networks using fifth-generation mobile communication technology (5G), future mobile communication networks, or multiple communication technology convergence systems, etc., and the embodiments of the present disclosure are not limited to this.

[0047] For example, FIG1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present disclosure. As shown in FIG1 , a communication system 10 includes multiple communication devices (eg, communication device 21, communication device 22, and communication device 23). The multiple communication devices can be communicatively connected.

[0048] Communication devices can communicate with each other via a sidelink (SL), and the communication mode may include unicast, multicast and / or broadcast.

[0049] In some embodiments, the communication device can be a device with wireless transceiver capabilities, which can be deployed on land, including indoors or outdoors, handheld, wearable, or vehicle-mounted; it can also be deployed on the water (such as a ship, etc.); it can also be deployed in the air (for example, on an airplane, a balloon, and a satellite, etc.). The communication device can be a mobile phone, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical care, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. The embodiments of the present disclosure do not limit the application scenarios. Communication equipment may sometimes also be referred to as user, user equipment (UE), access terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal, mobile device, UE terminal, wireless communication equipment, UE agent or UE device, etc., but the embodiments of the present disclosure are not limited to this.

[0050] It should be noted that Figure 1 is only an exemplary framework diagram. The number of devices included in Figure 1 and the names of each device are not restricted. In addition to the devices shown in Figure 1, the communication system may also include other devices, such as core network devices.

[0051] The application scenarios of the embodiments of the present disclosure are not limited. The system architecture and business scenarios described in the embodiments of the present disclosure are intended to more clearly illustrate the technical solutions of the embodiments of the present disclosure and do not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. Those skilled in the art will appreciate that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present disclosure are equally applicable to similar technical problems.

[0052] The embodiment of the present disclosure provides a resource determination method. As shown in FIG2 , the method is applied to a first communication device and includes the following S101 to S103 .

[0053] S101: Receive a physical side link shared channel PSSCH in a resource pool.

[0054] A resource pool includes at least one resource block set (RB set) in the frequency domain. A resource block set includes at least one sub-channel, and a sub-channel includes several resource blocks. The frequency domain resources in the resource pool belong to the unlicensed spectrum.

[0055] In some embodiments, the resource pool includes multiple time slots in the time domain and multiple frequency domain resource units in the frequency domain. The time and frequency resources in the resource pool are used for side link communication.

[0056] In some embodiments, the resource pool includes at least one bandwidth part (Bandwidth Part, BWP), each BWP includes at least one resource block set, and guard band resource blocks (guardband RBs) may be included between the resource block sets.

[0057] In some embodiments, the subchannels included in different resource block sets have the same index.

[0058] In some embodiments, subchannels with the same index included in different resource block sets are the same subchannel.

[0059] For example, as shown in FIG3 , assuming that the index of subchannel 1 included in RB set 0 is 1 and the index of subchannel 1 included in RB set 1 is also 1, then the subchannel with index 1 included in RB set 0 and the subchannel with index 1 included in RB set 1 are regarded as the same subchannel.

[0060] In other embodiments, sub-channels with the same index included in different resource block sets are different sub-channels.

[0061] For example, as shown in FIG3 , assuming that the index of subchannel 0 included in RB set 0 is 0 and the index of subchannel 2 included in RB set 1 is also 0, then the subchannel with index 0 included in RB set 0 and the subchannel with index 0 included in RB set 1 are considered to be different subchannels.

[0062] In other embodiments, the subchannels included in different resource block sets have different indexes.

[0063] Exemplarily, continuing to refer to FIG. 3 , the index of subchannel 2 included in RB set 1 is 2, and the index of subchannel 0 included in RB set 2 is 0.

[0064] In some embodiments, among the sub-channels included in the PSSCH, there is at least one sub-channel that does not include a guardband RB.

[0065] In some embodiments, the channel access process is performed in units of one channel.

[0066] In other embodiments, the channel access process is performed in units of one RB set.

[0067] In some embodiments, during the channel access process, the channel is evaluated based on the received signal strength on the channel; if the received signal strength on the channel is less than a preset value for a certain number of times and / or for a certain duration, the evaluation result is that the channel is available, which means that the communication device can use some or all of the frequency domain resources contained in the channel to transmit side link information within a period of time. The bandwidth of a channel is typically 20MHz, and a channel includes an RB set and may also include guardband RBs. An RB set includes one or more subchannels, and a subchannel includes at least one RB.

[0068] S102: Determine a mapping relationship between subchannels and physical side link feedback channel PSFCH resources, where each subchannel and the resource blocks corresponding to the mapped PSFCH resources are located in the same resource block set.

[0069] In some embodiments, a mapping relationship between a sub-channel and a PSFCH resource is determined, indicating that the first communication device allocates a PSFCH resource to the sub-channel.

[0070] In some embodiments, the PSFCH resource includes a resource block (RB) in the frequency domain.

[0071] In some embodiments, the PSFCH resource includes multiple resource blocks (RBs) in the frequency domain.

[0072] In some other embodiments, the PSFCH resource includes a physical resource block (PRB) in the frequency domain.

[0073] In some other embodiments, the PSFCH resource includes multiple physical resource blocks (PRBs) in the frequency domain.

[0074] In some embodiments, a resource block set includes a sub-channel, which indicates that at least one resource block among the resource blocks included in a sub-channel is included in a resource block set.

[0075] For example, as shown in Figure 3, all resource blocks included in subchannel 0 are located in RB set 0. Subchannel 1 includes resource blocks in the guard band, and some resource blocks included in subchannel 1 are located in RB set 0, while others are located in RB set 1. All resource blocks included in subchannel 2 are located in RB set 1.

[0076] Therefore, it is determined that subchannel 0 is included in RB set 0; subchannel 1 is included in RB set 0, and subchannel 1 is included in RB set 1; and subchannel 2 is included in RB set 1.

[0077] Therefore, the frequency domain of the PSFCH resources mapped to subchannel 0 is within RB set 0. For the PSFCH resources mapped to subchannel 1, part of the frequency domain of the PSFCH resources is within RB set 0, and the rest of the frequency domain of the PSFCH resources is within RB set 1. The frequency domain of the PSFCH resources mapped to subchannel 2 is within RB set 1. This conclusion holds true for both slot 0 and slot 1.

[0078] In some embodiments, a resource block set includes a sub-channel, which indicates that a first non-guard band resource block included in a sub-channel is included in a resource block set.

[0079] Exemplarily, as shown in FIG4 , all resource blocks of subchannel 0 are included in RB set 0 , the resource block of the first non-protected band of subchannel 1 is included in RB set 1 , and all resource blocks of subchannel 2 are included in RB set 1 .

[0080] Therefore, it is determined that subchannel 0 is included in RB set 0; subchannel 1 is included in RB set 0; and subchannel 2 is included in RB set 1.

[0081] Therefore, the frequency domain of the PSFCH resource mapped to subchannel 0 in a slot is located in RB set 0. The frequency domain of the PSFCH resource mapped to subchannel 1 is also located in RB set 0. The frequency domain of the PSFCH resource mapped to subchannel 2 is also located in RB set 1. The above conclusion holds for both slot 0 and slot 1.

[0082] In some embodiments, a resource block set includes a subchannel, indicating that the last non-guard band resource block included in a subchannel is included in a resource block set. This prevents subchannels that include guard band resource blocks from having more PSFCH resources allocated to them, while subchannels that do not include guard band resource blocks from having fewer PSFCH resources allocated to them.

[0083] In some embodiments, a resource block set includes a sub-channel, which is characterized in that the first resource block included in a sub-channel is included in a resource block set.

[0084] In some embodiments, a resource block set includes a sub-channel, which is characterized in that the last resource block included in a sub-channel is included in a resource block set.

[0085] In some embodiments, a resource block set comprises a subchannel, indicating that all resource blocks included in a subchannel are contained within the same resource block set. Thus, a subchannel containing resource blocks with a guard band has no corresponding PSFCH resource, while a subchannel without resource blocks with a guard band has at least one corresponding PSFCH resource. This facilitates ensuring that the number of PSFCH resources mapped to subchannels without resource blocks with a guard band is the same or has minimal differences.

[0086] For example, as shown in FIG5 , all resource blocks of subchannel 0 are included in RB set 0, a portion of the resource blocks of subchannel 1 are included in RB set 0, another portion of the resource blocks are included in RB set 1, and all resource blocks of subchannel 2 are included in RB set 1.

[0087] Therefore, it is determined that subchannel 0 is included in RB set 0; subchannel 1 is not included in RB set 0, and subchannel 1 is not included in RB set 1; and subchannel 2 is included in RB set 1.

[0088] Therefore, the frequency domain of the PSFCH resource mapped to subchannel 0 is located in RB set 0. The frequency domain of the PSFCH resource mapped to subchannel 2 is located in RB set 1. The above conclusion holds for both slot 0 and slot 1.

[0089] In some embodiments, determining a mapping relationship between subchannels and PSFCH resources includes allocating PSFCH resources to a subchannel in a time slot.

[0090] In one embodiment, the subchannel j in time slot i is allocated the first PSFCH resources, or allocate a group of PSFCH resources numbered PSFCH resources, where j is the subchannel number within a resource block set, Equal to the period of PSFCH, Is a positive integer.

[0091] In some embodiments, a PSFCH opportunity is located in a slot, which is called a PSFCH slot. A PSFCH slot is PSSCH time slots.

[0092] For example, the association relationship between a PSFCH slot and a PSSCH time slot is shown in FIG6. The PSSCH time slot can also be called a candidate PSSCH time slot, which is a time slot that may transmit the PSSCH. A PSFCH slot and The time slots of the PSSCH are associated.

[0093] In some embodiments, The number of PSFCH resources mapped to a subchannel and located in an RB set to which the subchannel belongs.

[0094] In some embodiments, a PSFCH slot includes a PSFCH opportunity, It is the quotient of the total number of PSFCH resources in an RB set in a PSFCH slot divided by the product of the number of subchannels contained in the RB set and the PSFCH period.

[0095] For example, referring to FIG3 , a PSFCH slot includes a PSFCH opportunity, a PSFCH opportunity includes multiple time-domain symbols, the total number of PSFCH resources in RB set 0 within a PSFCH slot is 8, and RB set 0 includes subchannel 0 and subchannel 1. The number of PSSCH time slots mapped to this PSFCH slot is 2, namely slot 0 and slot 1, and the number of PSSCH time slots mapped to this PSFCH slot is equal to the PSFCH period value. The product of the number of subchannels included in RB set 0 and the PSFCH period is 4. Therefore, the number of PSFCH resources located in RB set 0 mapped to subchannel 0 of slot 0, subchannel 0 of slot 1, subchannel 1 of slot 0, or subchannel 1 of slot 1 is 2.

[0096] For example, continuing with reference to Figure 3 , a PSFCH slot includes a PSFCH opportunity, which includes multiple time-domain symbols. The total number of PSFCH resources in RB set 1 within a PSFCH slot is 8, and RB set 1 includes subchannel 1 and subchannel 2. The PSFCH period is 2, and the product of the number of subchannels included in RB set 1 and the PSFCH period is 4. Therefore, the number of PSFCH resources mapped to subchannel 1 in slot 0, subchannel 1 in slot 1, subchannel 2 in slot 0, or subchannel 2 in slot 1 within RB set 1 is 2.

[0097] As an example, referring to FIG3 , subchannel 0 is included in RB set 0, subchannel 1 is included in both RB set 0 and RB set 1, and subchannel 2 is included in RB set 1. A PSFCH slot maps a PSSCH slot to slot 0 and slot 1.

[0098] Therefore, the PSFCH resources allocated to subchannel 0 in slot 0 include PSFCH resources 0 through 1 within RB set 0. The PSFCH resources allocated to subchannel 0 in slot 1 include PSFCH resources 2 through 3 within RB set 0. The PSFCH resources allocated to subchannel 1 in slot 0 include PSFCH resources 4 through 5 within RB set 0. The PSFCH resources allocated to subchannel 1 in slot 1 include PSFCH resources 6 through 7 within RB set 0.

[0099] As another example, referring to FIG4 , PSSCH subchannels include subchannel 0, subchannel 1, and subchannel 2. Subchannel 0 and subchannel 1 are included in RB set 0, and subchannel 2 is included in RB set 1. A PSSCH slot mapped to a PSFCH time slot / opportunity includes slot 0 and slot 1.

[0100] The PSFCH resources allocated to subchannel 0 in slot 0 include PSFCH resources 0 through 1 in RB set 0. The PSFCH resources allocated to subchannel 0 in slot 1 include PSFCH resources 2 through 3 in RB set 0. The PSFCH resources allocated to subchannel 1 in slot 0 include PSFCH resources 4 through 5 in RB set 0. The PSFCH resources allocated to subchannel 1 in slot 1 include PSFCH resources 6 through 7 in RB set 0.

[0101] In another embodiment, the subchannel j in time slot i is allocated the first of a set of PSFCH resource blocks. PSFCH resource blocks, or allocate a group of PSFCH resource blocks numbered PSFCH resource blocks, where j is the subchannel number within a resource block set, Equal to the period of PSFCH, is a positive integer, and one PSFCH resource includes K1 PSFCH resource blocks.

[0102] 5 , PSSCH subchannels include subchannel 0, subchannel 1, and subchannel 2. Subchannel 0 is included in RB set 0, and subchannel 2 is included in RB set 1. A PSSCH slot mapped to a PSFCH time slot / opportunity includes slot 0 and slot 1.

[0103] The PSFCH resource blocks allocated to subchannel 0 in slot 0 include PSFCH resource blocks 0 to 3 in RB set 0. The PSFCH resource blocks allocated to subchannel 0 in slot 1 include PSFCH resource blocks 4 to 7 in RB set 0.

[0104] In some embodiments, i is the index of the PSSCH time slot, and j is the index of the subchannel. The subchannel index is used to indicate the position / number of the subchannel in a resource block set; the PSSCH time slot index is used to indicate the position / number of the PSSCH time slot of the received PSSCH in the PSSCH time slot mapped to the PSFCH time slot / opportunity.

[0105] In some embodiments, the index i of the time slot of the PSSCH is a natural number smaller than the PSFCH period.

[0106] In some embodiments, the index j of the subchannel is less than the number of subchannels included in the RB set to which the subchannel belongs, and j is a natural number.

[0107] S103: Determine a PSFCH resource to which at least one subchannel included in the PSSCH is mapped based on a mapping relationship between the subchannel and the PSFCH resource.

[0108] In some embodiments, one PSFCH resource includes one resource block in the frequency domain. The resource block includes at least one of the following: a common resource block, a physical resource block, and a virtual resource block.

[0109] In some embodiments, in the frequency domain, for the case where the subcarrier spacing is configured as μ, the common resource blocks are numbered starting from 0. The center of subcarrier 0 of common resource block 0 with subcarrier spacing configuration μ coincides with "point A". The relationship between the resource elements (k, l) is as follows:

[0110] Here, k is an offset relative to "point A", for example, k=0 corresponds to a subcarrier centered at "point A".

[0111] In some embodiments, the physical resource blocks with subcarrier spacing configuration μ are defined within a partial bandwidth and range from 0 to are numbered, where i is the number of the partial bandwidth.

[0112] Physical Resource Block In the portion of bandwidth i, the common resource blocks The relationship between them is as follows:

[0113] in, is the common resource block where the partial bandwidth i starts relative to common resource block 0. The exponent μ can be omitted when there is no risk of confusion.

[0114] In some embodiments, virtual resource blocks are defined within a fraction of the bandwidth and range from 0 to are numbered, where i is the number of the partial bandwidth.

[0115] In some embodiments, the PSFCH is transmitted on a PSFCH resource mapped to at least one subchannel included in the PSSCH. The PSFCH includes an indication of a Hybrid Automatic Repeat Request-Acknowledgement (HARQ-ACK) or contention indication information.

[0116] In some embodiments, HARQ-ACK includes two states: ACK (Acknowledgement) and NACK (Negative Acknowledgment), or HARQ-ACK includes only one state: NACK. ACK indicates that the PSSCH is received correctly. NACK indicates that the PSSCH is received incorrectly.

[0117] For example, Figure 7 is a flowchart of a communication interaction provided by an embodiment of the present disclosure. The second communication device sends a PSSCH to the first communication device, and the second communication device receives a PSFCH sent by the first communication device, where the PSFCH is used to indicate HARQ-ACK information or conflict indication information for the above-mentioned PSSCH.

[0118] Based on this, the first communication device receives PSSCH, which contains at least one sub-channel. The PSFCH mapped to a sub-channel is located in the same RB set as the sub-channel. Therefore, the resources corresponding to the PSFCH sent by the first communication device are in one or more RB sets in the RB set corresponding to the PSSCH. Therefore, the transmission of PSFCH increases the possibility of the first communication device successfully competing for the unlicensed spectrum channel, and solves the problem of determining resources under the unlicensed spectrum.

[0119] The embodiment of the present disclosure provides a resource determination method. As shown in FIG8 , the method is applied to a second communication device and includes the following steps S201 to S203 .

[0120] S201. Send a physical side link shared channel PSSCH in a resource pool.

[0121] S202: Determine a mapping relationship between subchannels and physical side link feedback channel PSFCH resources, where each subchannel and the resource blocks corresponding to the mapped PSFCH resources are located in the same resource block set.

[0122] In some embodiments, a resource block set includes a sub-channel, which indicates that at least one resource block among the resource blocks included in a sub-channel is included in the resource block set.

[0123] In some embodiments, a resource block set includes a sub-channel, which is characterized in that a first non-guard band resource block included in a sub-channel is included in a resource block set.

[0124] In some embodiments, a resource block set includes a sub-channel, which is characterized in that the last non-guard band resource block included in a sub-channel is included in the resource block set.

[0125] In some embodiments, a resource block set includes a sub-channel, which is characterized in that the first resource block included in a sub-channel is included in a resource block set.

[0126] In some embodiments, a resource block set includes a sub-channel, which is characterized in that the last resource block included in a sub-channel is included in a resource block set.

[0127] In some embodiments, a resource block set includes a subchannel, which indicates that all resource blocks included in a subchannel are included in the resource block set.

[0128] In some embodiments, determining a mapping relationship between a subchannel and a PSFCH resource includes allocating a PSFCH resource to a subchannel in a time slot, including:

[0129] Allocate the first of a set of PSFCH resources to subchannel j in time slot i. PSFCH resources, or allocate a group of PSFCH resources numbered PSFCH resources, where k = i + j is the subchannel number within a resource block set, Equal to the period of PSFCH, Is a positive integer.

[0130] In some embodiments, determining a mapping relationship between subchannels and PSFCH resources and allocating at least one PSFCH resource block to a subchannel in a time slot includes:

[0131] Allocate the first of a set of PSFCH resource blocks to subchannel j in time slot i. PSFCH resource blocks, or allocate a group of PSFCH resource blocks numbered PSFCH resource blocks, where j is the subchannel number within a resource block set, Equal to the period of PSFCH, is a positive integer, and one PSFCH resource includes K1 PSFCH resource blocks.

[0132] S203: Determine the PSFCH resource to which at least one subchannel included in the PSSCH is mapped based on the mapping relationship between the subchannel and the PSFCH resource.

[0133] Based on this, the PSSCH transmitted by the second communication device, as well as the PSFCH received by the second communication device and the subchannel associated with the PSFCH resource, are within the same RB set. This allows the second communication device to perform COT sharing with the first communication device, thereby increasing the likelihood that the first communication device will successfully compete for an unlicensed spectrum channel and facilitating PSFCH transmission with it. This solves the problem of determining resources in the unlicensed spectrum.

[0134] In some embodiments, in multicast communication, when the group size of the multicast is m, for the side link information sent by a member, the receivers include m-1 members other than the member, where m is the number of members included in the multicast.

[0135] In some embodiments, each member included in the multicast has a corresponding identifier, and the identifier corresponding to each member is configured through high-layer signaling.

[0136] In some embodiments, the higher layer signaling includes Media Access Control (MAC) information or Radio Resource Control (RRC) information.

[0137] In some embodiments, in multicast communication, after a member in the groupcast sends a PSSCH, other members in the groupcast that receive the PSSCH may send a PSFCH to the member that sent the PSSCH with respect to the PSSCH. The PSFCH includes HARQ-ACK information.

[0138] In some embodiments, the type of HARQ-ACK information includes a first type and a second type; the first type of HARQ-ACK information includes confirmation information or negative confirmation information; the second type of HARQ-ACK information includes only negative confirmation information. The confirmation information is used to indicate that the PSSCH is received correctly. The negative confirmation information is used to indicate that the PSSCH is received incorrectly.

[0139] In some embodiments, the type of HARQ-ACK information is determined according to the multicast group size and the number of PSFCH resources.

[0140] In some embodiments, when the multicast group size is less than or equal to the number of PSFCH resources, the first type of HARQ-ACK information is selected, or the second type of HARQ-ACK information is selected.

[0141] In some embodiments, when the group size of the multicast is greater than the number of PSFCH resources, the second type of HARQ-ACK information is selected.

[0142] In some embodiments, when the group size of the multicast is less than or equal to the number of PSFCH resources, and the higher layer signaling provides the member number / identification number in the multicast, the first type of HARQ-ACK information is selected, or the second type of HARQ-ACK information is selected.

[0143] In some embodiments, when the group size of the multicast is larger than the number of PSFCH resources and when higher layer signaling provides a member number / identification number in the multicast, the second type of HARQ-ACK information is selected.

[0144] In some embodiments, when the PSFCH includes the first type of HARQ-ACK information, different members in the multicast group use different PSFCH resources to send the PSFCH.

[0145] In some embodiments, when the PSFCH includes the second type of HARQ-ACK information, different members in the multicast group use the same PSFCH resource to send the PSFCH.

[0146] For example, in a multicast communication, the group includes terminal 1, terminal 2, terminal 3, and terminal 4. The number of PSFCH resources is 4. Terminal 1 sends the same PSSCH to terminal 2, terminal 3, and terminal 4. After receiving the PSSCH, terminal 2, terminal 3, and terminal 4 use different PSFCH resources to send HARQ-ACK information to terminal 1. The HARQ-ACK information includes confirmation information or negative confirmation information.

[0147] For example, in a multicast communication, the group includes terminal 1, terminal 2, terminal 3, and terminal 4. The number of PSFCH resources is 2. Terminal 1 sends the same PSSCH to terminal 2, terminal 3, and terminal 4. After receiving the PSSCH, terminal 2, terminal 3, and terminal 4 use the same PSFCH resource to send HARQ-ACK information to terminal 1. The HARQ-ACK information only includes negative acknowledgement information.

[0148] In some embodiments, a member of a multicast selects M resources for a transmission block (TB), where one resource includes N subchannels. At least one resource among the M resources is used to transmit at least one PSSCH, where one PSSCH includes N subchannels.

[0149] In some embodiments, the number of PSFCH resources P = NN × P subch , P subch is a positive integer, where NN is a preset value, for example, NN=1; or, NN is equal to the number of subchannels included in a PSSCH.

[0150] In some embodiments, P subch The minimum number of PSFCH resources mapped to the subchannels within a frequency range. A frequency range includes multiple subchannels, and one subchannel is mapped to one or more PSFCH resources.

[0151] In some embodiments, a frequency domain range includes at least one of the following: multiple resource block sets within a resource pool, all resource block sets within a resource pool, multiple resource block sets within a BWP, all resource block sets within a BWP, and one resource block set.

[0152] In some embodiments, P subch Configured through high-level signaling or determined based on pre-configured information.

[0153] In some embodiments, the higher layer signaling includes Media Access Control (MAC) information or Radio Resource Control (RRC) information.

[0154] In some embodiments, the preconfiguration information is high-layer preconfiguration information. High-layer refers to the physical layer. Configuration typically originates from the network or base station and is sent to the communication device via signaling. Preconfiguration is typically provided by other high-layer entities, such as the communication device's own high-layer or other network entities.

[0155] In some other embodiments, the number of PSFCH resources P is equal to M P m The minimum value among them, P m The sum of the number of PSFCH resources mapped to each of the N subchannels included in the m-th resource among the M resources selected by the third communication device for a transport block TB. m It represents the number of PSFCH resources mapped to the first sub-channel included in the m-th resource among M resources selected by the third user equipment for a TB.

[0156] Based on this, the problem of insufficient PSFCH capacity when selecting the first type of HARQ-ACK information can be avoided. For example, when the first type of HARQ-ACK information is selected, if the number of PSFCH resources P is less than the multicast group size, the problem of insufficient PSFCH capacity may occur.

[0157] The above mainly introduces the scheme of the embodiment of the present disclosure from the perspective of method. Two resource determination devices are also shown below, which are used to execute the communication method in any of the above embodiments and possible implementation methods. It can be understood that in order to implement the resource determination method, the resource determination device includes a hardware structure and / or software module corresponding to the execution of each function; those skilled in the art should easily realize that, in combination with the algorithm steps of each example described in the embodiment of the present disclosure, the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present disclosure.

[0158] The embodiments of the present disclosure can divide the resource determination device into functional modules according to the above-mentioned method embodiments. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one functional module. The above-mentioned integrated modules can be implemented in the form of hardware or software. It should be noted that the division of modules in the embodiments of the present disclosure is schematic and is only a logical functional division. In actual implementation, there may be other division methods. The following is an example of dividing each functional module corresponding to each function.

[0159] FIG9 is a diagram of a resource determination apparatus provided by an embodiment of the present disclosure, which is applied to a first communication device. The communication apparatus 30 includes a communication module 31 and a processing module 32.

[0160] The communication module 31 receives a physical side link shared channel (PSSCH) in a resource pool; wherein a resource pool includes at least one resource block set in the frequency domain, a resource block set includes at least one subchannel, and a subchannel includes a plurality of resource blocks;

[0161] A processing module 32 is configured to determine a mapping relationship between a subchannel and a physical side link feedback channel (PSFCH) resource, wherein the resource block corresponding to any subchannel in the subchannel and the PSFCH resource to which it is mapped is located in the same resource block set;

[0162] The processing module 32 is further configured to determine a PSFCH resource mapped to at least one subchannel included in the PSSCH based on a mapping relationship between the subchannel and the PSFCH resource.

[0163] In some embodiments, a resource block set includes a sub-channel, which indicates that at least one resource block among the resource blocks included in a sub-channel is included in a resource block set.

[0164] In some embodiments, a resource block set includes a sub-channel, which indicates that a first non-guard band resource block included in a sub-channel is included in a resource block set.

[0165] In some embodiments, a resource block set includes a sub-channel, which indicates that the last non-guard band resource block included in a sub-channel is included in the resource block set.

[0166] In some embodiments, a resource block set includes a sub-channel, which indicates that a first resource block included in a sub-channel is included in a resource block set.

[0167] In some embodiments, a resource block set includes a sub-channel, which indicates that the last resource block included in a sub-channel is included in a resource block set.

[0168] In some embodiments, a resource block set includes a sub-channel, which indicates that all resource blocks included in a sub-channel are included in a resource block set.

[0169] In some embodiments, determining a mapping relationship between a subchannel and a PSFCH resource includes allocating a PSFCH resource to a subchannel in a time slot, including:

[0170] Allocate the first of a set of PSFCH resources to subchannel j in time slot i. PSFCH resources, or allocate a group of PSFCH resources numbered PSFCH resources, where k = i + j j is the subchannel number within a resource block set, Equal to the period of PSFCH, Is a positive integer.

[0171] In some embodiments, determining a mapping relationship between subchannels and PSFCH resources and allocating at least one PSFCH resource block to a subchannel in a time slot includes:

[0172] Allocate the first of a set of PSFCH resource blocks to subchannel j in time slot i. PSFCH resource blocks, or allocate a group of PSFCH resource blocks numbered PSFCH resource blocks, where j is the subchannel number within a resource block set, Equal to the period of PSFCH, is a positive integer, and one PSFCH resource includes K1 PSFCH resource blocks.

[0173] FIG10 is a diagram of a resource determination apparatus provided by an embodiment of the present disclosure, which is applied to a second communication device. The resource determination apparatus 40 includes a communication module 41 and a processing module 42.

[0174] The communication module 41 transmits a physical side link shared channel (PSSCH) in a resource pool; wherein a resource pool includes at least one resource block set in the frequency domain, a resource block set includes at least one subchannel, and a subchannel includes a plurality of resource blocks;

[0175] A processing module 42 is configured to determine a mapping relationship between a subchannel and a physical side link feedback channel (PSFCH) resource, wherein the resource blocks corresponding to any subchannel in the subchannel and the PSFCH resource to which it is mapped are located in the same resource block set;

[0176] The processing module 42 is further configured to determine a PSFCH resource mapped to at least one sub-channel included in the PSSCH based on a mapping relationship between the sub-channel and the PSFCH resource.

[0177] In some embodiments, a resource block set includes a sub-channel, which indicates that at least one resource block among the resource blocks included in a sub-channel is included in the resource block set.

[0178] In some embodiments, a resource block set includes a sub-channel, which is characterized in that a first non-guard band resource block included in a sub-channel is included in a resource block set.

[0179] In some embodiments, a resource block set includes a sub-channel, which is characterized in that the last non-guard band resource block included in a sub-channel is included in the resource block set.

[0180] In some embodiments, a resource block set includes a sub-channel, which is characterized in that the first resource block included in a sub-channel is included in a resource block set.

[0181] In some embodiments, a resource block set includes a sub-channel, which is characterized in that the last resource block included in a sub-channel is included in a resource block set.

[0182] In some embodiments, a resource block set includes a subchannel, which indicates that all resource blocks included in a subchannel are included in the resource block set.

[0183] In some embodiments, determining a mapping relationship between a subchannel and a PSFCH resource includes allocating a PSFCH resource to a subchannel in a time slot, including:

[0184] Allocate the first of a set of PSFCH resources to subchannel j in time slot i. PSFCH resources, or allocate a group of PSFCH resources numbered PSFCH resources, where j is the subchannel number within a resource block set, Equal to the period of PSFCH, Is a positive integer.

[0185] In some embodiments, determining a mapping relationship between subchannels and PSFCH resources and allocating at least one PSFCH resource block to a subchannel in a time slot includes:

[0186] Allocate the first of a set of PSFCH resource blocks to subchannel j in time slot i. PSFCH resource blocks, or allocate a group of PSFCH resource blocks numbered PSFCH resource blocks, where j is the subchannel number within a resource block set, Equal to the period of PSFCH, is a positive integer, and one PSFCH resource includes K1 PSFCH resource blocks.

[0187] In the case of implementing the functions of the above-mentioned integrated modules in hardware, the embodiments of the present disclosure also provide a structure of a communication device for executing the resource determination method provided in the embodiments of the present disclosure. As shown in Figure 11, the communication device 500 includes: a memory 501, a processor 502, a communication interface 503, and a bus 504.

[0188] The memory 501 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store dynamic information and instructions, an electrically erasable programmable read-only memory (EEPROM), a disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0189] The processor 502 may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the embodiments of the present disclosure. The processor 502 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array, or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. The processor 502 may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the embodiments of the present disclosure. The processor 502 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

[0190] The communication interface 503 is used to connect to other devices via a communication network, such as Ethernet, wireless access network, or wireless local area network (WLAN).

[0191] In one embodiment, the memory 501 may exist independently of the processor 502 and may be connected to the processor 502 via a bus 504 for storing instructions or program codes. When the processor 502 calls and executes the instructions or program codes stored in the memory 501, the resource determination method provided in the embodiment of the present disclosure can be implemented.

[0192] In another embodiment, the memory 501 may also be integrated with the processor 502 .

[0193] Bus 504 can be an Extended Industry Standard Architecture (EISA) bus, etc. Bus 504 can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, FIG11 shows only one thick solid line, but this does not mean that there is only one bus or only one type of bus.

[0194] Some embodiments of the present disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium), which stores computer program instructions. When the computer program instructions are executed on a computer, the computer executes the resource determination method as described in any of the above embodiments.

[0195] In an exemplary embodiment, the computer may be the aforementioned communication device, and the present disclosure does not limit the specific form of the computer.

[0196] In some examples, the computer-readable storage media described above may include, but are not limited to, magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical disks (e.g., compact disks (CDs), digital versatile disks (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memories (EPROMs), cards, sticks, or key drives, etc.). The various computer-readable storage media described in this disclosure may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0197] An embodiment of the present disclosure provides a computer program product comprising instructions. When the computer program product is run on a computer, the computer is enabled to execute the resource determination method described in any one of the above embodiments.

[0198] The above is only a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or replacements within the technical scope disclosed in the present disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A resource determination method, applied to a first communication device, wherein: The method comprises: Receiving a physical side link shared channel PSSCH in a resource pool; wherein a resource pool includes at least one resource block set in the frequency domain, each resource block set in the at least one resource block set includes at least one subchannel, and each subchannel in the at least one subchannel includes a number of resource blocks; Determine a mapping relationship between a subchannel and a physical side link feedback channel PSFCH resource, wherein each subchannel and a resource block corresponding to the PSFCH resource mapped thereto are located in the same resource block set; Based on the mapping relationship between the sub-channel and the PSFCH resource, the PSFCH resource mapped to at least one sub-channel included in the PSSCH is determined.

2. The method according to claim 1, wherein: A resource block set includes a subchannel, which is characterized by: At least one resource block among the resource blocks included in one subchannel is included in the one resource block set.

3. The method according to claim 1, wherein: A resource block set includes a subchannel, which is characterized by: A first non-protected band resource block included in a sub-channel is included in the one resource block set.

4. The method according to claim 1, wherein: A resource block set includes a subchannel, which is characterized by: The last non-protected band resource block included in one sub-channel is included in the one resource block set.

5. The method according to claim 1, wherein: A resource block set includes a subchannel, which is characterized by: The first resource block included in a sub-channel is included in the resource block set.

6. The method according to claim 1, wherein: A resource block set includes a subchannel, which is characterized by: The last resource block included in one subchannel is included in the one resource block set.

7. The method according to claim 1, wherein: A resource block set includes a subchannel, which is characterized by: All resource blocks included in one subchannel are included in the one resource block set.

8. The method according to claim 1, wherein: Determine the mapping relationship between the subchannel and the PSFCH resource, including allocating the PSFCH resource to a subchannel in a time slot, including: Allocate the first of a set of PSFCH resources to subchannel j in time slot i. PSFCH resources, or a group of PSFCH resources numbered PSFCH resources, where j is the subchannel number in a resource block set, is equal to the period of PSFCH, Is a positive integer.

9. The method according to claim 1, wherein: Determine the mapping relationship between the subchannel and the PSFCH resource, and allocate at least one PSFCH resource block to a subchannel in a time slot, including: Allocate the first PSFCH resource blocks, or a group of PSFCH resource blocks numbered PSFCH resource blocks, where j is the subchannel number in a resource block set, is equal to the period of PSFCH, is a positive integer, and one PSFCH resource includes K1 PSFCH resource blocks.

10. A resource determination method, applied to a second communication device, wherein: The method comprises: A physical side link shared channel PSSCH is transmitted in a resource pool; wherein a resource pool includes at least one resource block set in the frequency domain, each resource block set in the at least one resource block set includes at least one subchannel, and each subchannel in the at least one subchannel includes a number of resource blocks; Determine a mapping relationship between a subchannel and a physical side link feedback channel PSFCH resource, wherein each subchannel and a resource block corresponding to the PSFCH resource mapped thereto are located in the same resource block set; The PSFCH resource mapped to at least one subchannel included in the PSSCH is determined based on the mapping relationship between the subchannel and the PSFCH resource.

11. The method according to claim 10, wherein: A resource block set includes a subchannel, which is characterized by: At least one resource block among the resource blocks included in one subchannel is included in the one resource block set.

12. The method according to claim 10, wherein: A resource block set includes a subchannel, which is characterized by: A first non-protected band resource block included in a sub-channel is included in the one resource block set.

13. The method according to claim 10, wherein: A resource block set includes a subchannel, which is characterized by: The last non-protected band resource block included in one sub-channel is included in the one resource block set.

14. The method according to claim 10, wherein: A resource block set includes a subchannel, which is characterized by: The first resource block included in a sub-channel is included in the resource block set.

15. The method according to claim 10, wherein: A resource block set includes a subchannel, which is characterized by: The last resource block included in one subchannel is included in the one resource block set.

16. The method according to claim 10, wherein: A resource block set includes a subchannel, which is characterized by: All resource blocks included in one subchannel are included in the one resource block set.

17. The method according to claim 10, wherein: Determine the mapping relationship between the subchannel and the PSFCH resource, including allocating the PSFCH resource to a subchannel in a time slot, including: Allocate the first of a set of PSFCH resources to subchannel j in time slot i. PSFCH resources, or a group of PSFCH resources numbered PSFCH resources, where j is the subchannel number in a resource block set, is equal to the period of PSFCH, Is a positive integer.

18. The method according to claim 10, wherein: The determining of the mapping relationship between the subchannel and the PSFCH resource, and allocating at least one PSFCH resource block to a subchannel of a time slot, includes: Allocate the first PSFCH resource blocks, or a group of PSFCH resource blocks numbered PSFCH resource blocks, where j is the subchannel number in a resource block set, is equal to the period of PSFCH, is a positive integer, and one PSFCH resource includes K1 PSFCH resource blocks.

19. A communication device, comprising: A memory and a processor; wherein the memory and the processor are coupled; the memory is used to store instructions executable by the processor; when the processor executes the instructions, the resource determination method according to any one of claims 1 to 18 is executed.

20. A computer-readable storage medium, wherein: The computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a communication device, the communication device is enabled to perform the resource determination method according to any one of claims 1 to 18.

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