Communication method, user equipment, and storage medium

Abstract

The present disclosure relates to a communication method, a user equipment and a storage medium. The communication method is performed by a first user equipment, and the communication method comprises: in response to determining that a reserved resource of a second user equipment for data transmission is about to cause a resource conflict, sending a pre-conflict indication to the second user equipment, the pre-conflict indication being used to indicate that the reserved resource of the second user equipment is about to cause a resource conflict. The present disclosure realizes the indication of whether the reserved resource for data transmission causes a resource conflict.

Description

[0001] This application is a divisional application. The original application has the application number 202180000232.5, the application date is January 14, 2021, and the invention title is "Communication Method, Communication Device and Storage Medium". Technical Field

[0002] This disclosure relates to the field of communication technology, and in particular to a communication method, user equipment, and storage medium. Background Technology

[0003] Since Long Term Evolution (LTE), the Third Generation Partnership (3GPP) has been developing the Sidelink standard as a standard for direct end-to-end communication. In July 2020, the first standard for New Radio (NR) Sidelink was completed in Rel-16, with NR Sidelink solutions primarily used for Vehicle to Everything (V2X) and public safety. Due to time constraints, Release 16 did not fully support service requirements and operational scenarios for V2X and public safety, and Service and System Aspects (SA) received some enhancements in Release 17 NR Sidelink, such as architectural and system enhancements to support advanced V2X services in 3GPP. Furthermore, the SA working group is exploring other commercial use cases related to NR Sidelink, such as interactive services for network control, enhanced energy-efficient relays, wide coverage, and audiovisual service production. Therefore, at the 86th 3GPP plenary meeting, in the project proposal of Release 17, the enhancement of NR Sidelink was included as a work item, with the aim of improving the reliability of Sidelink transmission and reducing latency.

[0004] In the NR Sidelink enhancement, for direct communication, user equipment A can send auxiliary information to user equipment B using the resource selection mode of Mode 2. User equipment B takes this into consideration when selecting resources for its own data transmission. However, in related technologies, there may be instances where the resources used by user equipment B for data transmission overlap with the resources reserved by other user equipment, leading to a resource conflict for the second user equipment's data transmission. Summary of the Invention

[0005] To overcome the problems existing in related technologies, this disclosure provides a communication method, a user equipment, and a storage medium.

[0006] According to a first aspect of the present disclosure, a communication method is provided, executed by a first user equipment, the communication method comprising: in response to determining that a resource conflict is about to occur in reserved resources for data transmission by a second user equipment, sending a pre-conflict indication to the second user equipment, the pre-conflict indication indicating that a resource conflict is about to occur in the reserved resources of the second user equipment.

[0007] In one embodiment, sending a pre-conflict indication to the second user equipment includes:

[0008] Using the Physical Direct Feedback Channel (PSFCH) resources mapped by the first Physical Direct Shared Channel (PSSCH), a pre-conflict indication is sent to the second user equipment; wherein, the first PSSCH is the PSSCH on the time slot where the first Physical Direct Control Channel (PSCCH) is located, and the first PSCCH is used to indicate that the reserved PSSCH resources are about to be conflicted.

[0009] In one implementation, the pre-collision indication is 1 bit.

[0010] In one embodiment, the communication method further includes: sending a Hybrid Automatic Repeat Request (HARQ) feedback through the time slot where the PSFCH resource is located.

[0011] In one embodiment, sending the HARQ feedback and the pre-collision indication includes: sending the HARQ feedback through PSFCH resources in a first frequency domain, and sending the pre-collision indication through PSFCH resources in a second frequency domain.

[0012] In one embodiment, the PSFCH resources in the first frequency domain and the PSFCH resources in the second frequency domain have the same time domain resources.

[0013] In one embodiment, the time interval between sending a pre-conflict indication to the second user equipment and the time when the second user equipment is about to experience a resource conflict is greater than or equal to a time interval threshold.

[0014] In one implementation, the time interval between the first PSSCH and PSFCH is greater than or equal to the minimum time interval.

[0015] In one implementation, the time interval threshold is determined based on Radio Resource Control (RRC) signaling.

[0016] According to a second aspect of the present disclosure, a communication method is provided, executed by a second user equipment, the communication method comprising: receiving a pre-conflict indication sent by a first user equipment, the pre-conflict indication indicating that a resource conflict is about to occur in the reserved resources of the second user equipment; and performing resource reselection based on the pre-conflict indication.

[0017] In one embodiment, receiving the pre-conflict indication sent by the first user equipment includes: using the Physical Direct Feedback Channel (PSFCH) resources mapped by the first Physical Direct Shared Channel (PSSCH) to receive the pre-conflict indication sent by the first user equipment; wherein, the first PSSCH is the PSSCH on the time slot where the first Physical Direct Control Channel (PSCCH) is located, and the first PSCCH is used to indicate that a reserved PSSCH resource is about to be conflicted. In one embodiment, the pre-conflict indication is 1 bit.

[0018] In one embodiment, the communication method further includes: receiving Hybrid Automatic Repeat Request (HARQ) feedback through the time slot where the PSFCH resource is located.

[0019] In one embodiment, receiving the HARQ feedback and the pre-collision indication includes: receiving the HARQ feedback through PSFCH resources in a first frequency domain, and receiving the pre-collision indication through PSFCH resources in a second frequency domain.

[0020] In one embodiment, the PSFCH resources in the first frequency domain and the PSFCH resources in the second frequency domain have the same time domain resources.

[0021] In one implementation, the time interval between receiving the pre-conflict indication and the time when the second user equipment is about to experience a resource conflict is greater than or equal to a time interval threshold.

[0022] In one implementation, the time interval between the first PSSCH and PSFCH is greater than or equal to the minimum time interval.

[0023] In one implementation, the time interval threshold is determined based on Radio Resource Control (RRC) signaling.

[0024] According to a third aspect of the present disclosure, a first user equipment is provided, the first user equipment comprising:

[0025] The processing unit is configured to determine that a resource conflict is about to occur in the reserved resources for data transmission of the second user equipment; the sending unit is configured to, in response to the processing unit determining that a resource conflict is about to occur in the reserved resources for data transmission of the second user equipment, send a pre-conflict indication to the second user equipment, the pre-conflict indication being used to indicate that a resource conflict is about to occur in the reserved resources of the second user equipment.

[0026] In one embodiment, the transmitting unit is configured to send a pre-collision indication to the second user equipment in the following manner:

[0027] Using the Physical Direct Feedback Channel (PSFCH) resources mapped by the first Physical Direct Shared Channel (PSSCH), a pre-conflict indication is sent to the second user equipment; wherein, the first PSSCH is the PSSCH on the time slot where the first Physical Direct Control Channel (PSCCH) is located, and the first PSCCH is used to indicate that the reserved PSSCH resources are about to be conflicted.

[0028] In one implementation, the pre-collision indication is 1 bit.

[0029] In one embodiment, the sending unit is further configured to send a Hybrid Automatic Repeat Request (HARQ) feedback through the time slot where the PSFCH resource is located.

[0030] In one embodiment, the transmitting unit transmits the HARQ feedback through the PSFCH resources in the first frequency domain and transmits the pre-collision indication through the PSFCH resources in the second frequency domain.

[0031] In one embodiment, the PSFCH resources in the first frequency domain and the PSFCH resources in the second frequency domain have the same time domain resources.

[0032] In one embodiment, the time interval between sending a pre-conflict indication to the second user equipment and the time when the second user equipment is about to experience a resource conflict is greater than or equal to a time interval threshold.

[0033] In one implementation, the time interval between the first PSSCH and PSFCH is greater than or equal to the minimum time interval.

[0034] In one implementation, the time interval threshold is determined based on Radio Resource Control (RRC) signaling.

[0035] According to a fourth aspect of the present disclosure, a second user equipment is provided, the second user equipment comprising:

[0036] The receiving unit is configured to receive a pre-conflict indication sent by a first user equipment, the pre-conflict indication being used to indicate that a resource conflict is about to occur in the reserved resources for data transmission by a second user equipment; the processing unit is configured to perform resource reselection based on the pre-conflict indication.

[0037] In one embodiment, the receiving unit uses the Physical Direct Feedback Channel (PSFCH) resources mapped by the first Physical Direct Shared Channel (PSSCH) transmission resources to receive a pre-conflict indication sent by the first user equipment. The pre-conflict indication is 1 bit. The first PSSCH is the PSSCH on the time slot where the first Physical Direct Control Channel (PSCCH) is located, and the first PSCCH is used to indicate that the reserved PSSCH resources are about to be conflicted.

[0038] In one implementation, the pre-collision indication is 1 bit.

[0039] In one embodiment, the receiving unit receives Hybrid Automatic Repeat Request (HARQ) feedback through the time slot where the PSFCH resource is located.

[0040] In one embodiment, the receiving unit receives the HARQ feedback through the PSFCH resources in the first frequency domain and receives the pre-collision indication through the PSFCH resources in the second frequency domain.

[0041] In one embodiment, the PSFCH resources in the first frequency domain and the PSFCH resources in the second frequency domain have the same time domain resources.

[0042] In one implementation, the time interval between receiving the pre-conflict indication and the time when the second user equipment is about to experience a resource conflict is greater than or equal to a time interval threshold.

[0043] In one implementation, the time interval between the first PSSCH and PSFCH is greater than or equal to the minimum time interval.

[0044] In one implementation, the time interval threshold is determined based on Radio Resource Control (RRC) signaling.

[0045] According to a fifth aspect of the present disclosure, a communication device is provided, comprising:

[0046] Processor; memory used to store processor-executable instructions;

[0047] The processor is configured to execute the communication method described in the first aspect or any one of the first aspects.

[0048] According to a sixth aspect of the present disclosure, a communication device is provided, comprising:

[0049] Processor; memory used to store processor-executable instructions;

[0050] The processor is configured to execute the communication method described in the second aspect or any one of the second aspects.

[0051] According to a seventh aspect of this disclosure, a non-transitory computer-readable storage medium is provided, wherein when instructions in the storage medium are executed by a processor, a user equipment is enabled to perform the communication method described in the first aspect or any one of the first aspects.

[0052] According to an eighth aspect of this disclosure, a non-transitory computer-readable storage medium is provided, wherein when instructions in the storage medium are executed by a processor, a user equipment is enabled to perform the communication method described in the second aspect or any one of the second aspects.

[0053] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: when it is determined that a resource conflict is about to occur in the reserved resources for data transmission, a pre-conflict indication is sent to the second user equipment to indicate whether a resource conflict has occurred in the reserved resources for data transmission.

[0054] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0055] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0056] Figure 1 This is a schematic diagram of a direct communication system according to an exemplary embodiment.

[0057] Figure 2 This is a schematic diagram illustrating an impending resource conflict in reserved resources according to an exemplary embodiment.

[0058] Figure 3 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0059] Figure 4 A schematic diagram of a PSFCH resource for transmitting a pre-collision indication is shown in an exemplary embodiment of this disclosure.

[0060] Figure 5 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0061] Figure 6 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0062] Figure 7 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0063] Figure 8 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0064] Figure 9 A schematic diagram illustrating a method of distinguishing between HARQ feedback and pre-conflict indication by cycle shift is shown in an exemplary embodiment of this disclosure.

[0065] Figure 10 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0066] Figure 11 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0067] Figure 12 This is a schematic diagram illustrating, according to an exemplary embodiment, a resource for which pre-conflict indication and HARQ feedback are configured independently via RRC signaling.

[0068] Figure 13 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0069] Figure 14 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0070] Figure 15 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0071] Figure 16 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0072] Figure 17 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0073] Figure 18 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0074] Figure 19 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0075] Figure 20 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0076] Figure 21 This is a block diagram of a communication device according to an exemplary embodiment.

[0077] Figure 22 This is a block diagram of a communication device according to an exemplary embodiment.

[0078] Figure 23 This is a block diagram illustrating a communication apparatus according to an exemplary embodiment. Detailed Implementation

[0079] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0080] The communication method provided in this disclosure can be applied to... Figure 1 The direct-connect communication system shown. (See attached image) Figure 1 As shown, in a scenario where direct communication occurs between directly connected communication devices, the network device configures various transmission parameters for data transmission for directly connected communication device 1. Directly connected communication devices 1, 2, and 3 communicate directly. Obstacles may exist between directly connected communication devices 2 and 3. The communication link between the network device and the directly connected communication devices is an uplink / downlink, while the link between directly connected communication devices is a sidelink.

[0081] In this disclosure, the communication scenario of direct communication between directly connected communication devices can be a Vehicle to Everything (V2X) service scenario. Here, V represents the on-board device, and X represents any object interacting with the on-board device. Currently, X mainly includes on-board devices, handheld devices, roadside infrastructure, and networks. V2X interaction modes include: vehicle to vehicle (V2V), vehicle to infrastructure (V2I), vehicle to handheld devices (V2P), and vehicle to network (V2N).

[0082] With the development of next-generation 5G mobile communication technology, 3GPP Rel-16 utilizes 5G NR technology to support new V2x communication services and scenarios, such as vehicle platooning, extended sensors, advanced driving, and remote driving. Overall, 5G V2x sidelinks offer higher communication rates, lower latency, and more reliable communication quality.

[0083] The communication scenario of direct communication between directly connected communication devices can also be a device-to-device (D2D) communication scenario. In the embodiments of this disclosure, the directly connected communication devices can include various handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment (UE), mobile station (MS), terminal, terminal equipment, etc. For ease of description, the embodiments of this disclosure will use user equipment as an example for explanation.

[0084] Among these enhancements, NR Sidelink can improve transmission reliability and reduce latency. Regarding the enhancement of Mode 2 resource allocation within NR Sidelink, the 3GPP working group concluded that a method for assisted resource selection between user equipments (UEs) needs to be studied. This method defines two UEs, for example, UE A is an auxiliary UE of UE B, and UE B is the UE that needs to select resources for its own data transmission. UE A determines auxiliary information and sends it to UE B via Mode 2. UE B considers this auxiliary information when making resource selection; in other words, UE B uses an auxiliary information assistance mechanism for resource selection. UE B can then send data to UE A and / or other UEs.

[0085] In Mode 2 resource allocation, resource selection is performed through resource awareness. User equipment (UE) determines a candidate resource set by decoding sidelink control information (SCI) and measuring the demodulation reference signal (DMRS) of the Physical Sidelink Shared Channel (PSSCH), and then selects resources from this set for data transmission. However, due to half-duplex issues, UE B cannot receive SCIs from other UEs (e.g., UE C) in the same time slot when transmitting its own SCI. This causes overlap between the time and frequency resources reserved by UE B and other UEs, meaning the time and frequency resource assignment fields carried in the SCIs of UE B and other UEs are identical. This leads to an impending resource conflict, or pre-conflict, in the reserved resources used for data transmission by the UE.

[0086] Figure 2 This diagram illustrates an impending resource conflict arising from reserved resources. (See also...) Figure 2 As shown, in Sub-channel 1, UEA decodes the reserved resources obtained from UEB's SCI and decodes UEC's SCI. The reserved resources obtained from UEB and UEC overlap. When UEB performs data transmission, using this overlapping time-frequency resource will soon lead to a resource conflict. In related technologies, UEB can detect the overlap of reserved resources in the SCIs of UEB and UEC, that is, it can determine that a resource conflict is about to occur in the reserved resources used by UEB for data transmission.

[0087] To enhance resource allocation, it is necessary to reduce the probability of pre-conflict occurrence. This disclosure provides a communication method that, when it is determined that a resource conflict is imminent in the reserved resources used by a user equipment for data transmission, sends a pre-conflict indication to the user equipment. This pre-conflict indication serves to indicate whether a resource conflict has occurred in the reserved resources used by the user equipment for data transmission. Based on this pre-conflict indication, the user equipment selects resources, reducing the probability of selecting the resource that is about to experience a conflict, thereby reducing the probability of pre-conflict occurrence.

[0088] In one implementation, if the UEA providing auxiliary information in the above example detects that the resources reserved in the SCIs of UEB and UEC overlap, i.e., it determines that a resource conflict is about to occur in the reserved resources for data transmission by UEB, the UEA sends a pre-conflict indication to UEB. This pre-conflict indication is used to indicate whether a resource conflict has occurred in the reserved resources for data transmission by UEB. After receiving the pre-conflict indication, UEB performs resource reselection to reduce the probability of a pre-conflict occurring.

[0089] For ease of description in this embodiment, the user equipment providing auxiliary resources is referred to as the first user equipment, and the user equipment using the auxiliary information assistance mechanism to select resources is referred to as the second user equipment.

[0090] Figure 3 This is a flowchart illustrating a communication method according to an exemplary embodiment, such as... Figure 3 As shown, the communication method used in the first user equipment includes the following steps.

[0091] In step S11, in response to determining that a resource conflict is about to occur in the reserved resources for data transmission by the second user equipment, a pre-conflict indication is sent to the second user equipment.

[0092] The pre-conflict indication is used to indicate that a resource conflict is about to occur in the reserved resources for data transmission of the second user equipment.

[0093] In this embodiment of the disclosure, the first user equipment determines whether a resource conflict has occurred in the reserved resources for data transmission by the second user equipment by detecting whether the reserved resources in the respective SCIs of the second user equipment and other user equipment overlap in the time domain and / or frequency domain. If the reserved resources in the respective SCIs of the second user equipment and other user equipment overlap in the time domain and / or frequency domain, it is determined that a resource conflict is about to occur in the reserved resources for data transmission by the second user equipment.

[0094] The communication method provided in this disclosure sends a pre-conflict indication to the second user equipment when it is determined that a resource conflict is about to occur in the reserved resources for data transmission of the second user equipment, thereby indicating whether a resource conflict has occurred in the reserved resources for data transmission.

[0095] In one embodiment of the communication method provided in this disclosure, sending a pre-conflict indication to a second user equipment (UE) may involve using the Physical Sidelink Feedback Channel (PSFCH) resources mapped from the UE's current PSSCH transmission resources. Here, the UE's current PSSCH transmission resources can be understood as PSSCH transmission resources on the time slot of the Physical Sidelink Control Channel (PSCCH) used to indicate the reserved time-frequency resources for PSSCH transmission by the UE. These reserved PSSCH resources are about to experience a resource conflict. For ease of description in this disclosure, the UE's current PSSCH is referred to as the first PSSCH. The PSCCH used to indicate the reserved time-frequency resources for PSSCH transmission is referred to as the first PSCCH.

[0096] Figure 4 A schematic diagram of a PSFCH resource for transmitting a pre-collision indication is shown in an exemplary embodiment of this disclosure. See also... Figure 4 As shown, the PSCCH in Slot 3 can be understood as the first PSCCH. The first PSCCH indicates the reserved time-frequency resources for PSSCH() transmission, which are located in the future slot of Slot 3, i.e., the reserved resources for PSSCH transmission in Slot 7. Furthermore, the PSSCH transmission resources of the second user equipment and other user equipment in Slot 7 overlap, indicating an impending resource conflict for the reserved PSSCH. The PSSCH corresponding to the time slot where the first PSCCH in Slot 3 is located can be understood as the first PSSCH. The PSFCH resource mapped by the first PSSCH transmission resource can be the PSFCH located in Slot 5.

[0097] Figure 5 This is a flowchart illustrating a communication method according to an exemplary embodiment, such as... Figure 5 As shown, the communication method used in the first user equipment includes the following steps.

[0098] In step S21, a pre-collision indication is sent to the second user equipment using the PSFCH resource mapped by the first PSSCH transmission resource.

[0099] Wherein, the first PSSCH is the PSSCH in the time slot where the first PSCCH is located, and the first PSCCH is the PSCCH used to indicate the reserved time and frequency resources for the next PSSCH transmission.

[0100] The following describes the process of determining the PSFCH resources mapped to the first PSSCH transmission resources, with the first user equipment being UEA and the second user equipment being UEB.

[0101] In one example, assume UEA is an auxiliary UE and receiving UE of UEB, and one PSSCH resource is reserved for each PSCCH. The mapping rule between PSSCH and PSFCH transmission resources can be as follows: In the resource pool, the time slots available for PSFCH are indicated by higher-layer signaling parameters (e.g., periodic PSFCH resource parameters), such as configuring the transmission of a PSFCH every few time slots in the higher-layer signaling parameters. Furthermore, the higher-layer signaling parameters specify the time slot with the minimum time gap between PSSCH and PSFCH (Min Time Gap PSFCH).

[0102] In this embodiment of the disclosure, according to the mapping rules between PSSCH transmission resources and PSFCH transmission resources, the PSFCH candidate resource mapped by the first PSSCH transmission resource can be determined, and the PSFCH candidate resource is used as the PSFCH candidate resource for sending the pre-collision indication. Then, Formula 1 is used to determine the PSFCH transmission resource for sending the pre-collision indication.

[0103]

[0104] Among them, P ID It is the physical layer resource identifier provided by Phase II SCI-A or Phase II SCI-B. ID In unicast, it is 0. In multicast HARQ-NACK feedback mechanism with service type 01, M... ID The value is 0. When multicast HARQ-NACK / ACK feedback is received for service type 01, M... ID This is the value of the multicast member ID at the receiving end. This represents the number of cyclic shifts that can carry ACK / NACK feedback in all PRBs of the PSFCH candidate resources.

[0105] In one embodiment of this disclosure, see further details. Figure 4As shown. The first user equipment (UE) decodes the first-stage SCI (the first PSCCH in Slot 3) to obtain the time-domain resource assignment and frequency-domain resource assignment, thereby determining the resources for data transmission of the PSSCH in Slot 7. The PSFCH resources in Slot 5 are mapped from the first PSSCH. Therefore, based on the PSFCH resources in Slot 5, the first UE sends a pre-conflict indication to the second UE to indicate that a resource conflict is about to occur in the data transmission of the PSSCH in Slot 7.

[0106] In the communication method provided in this embodiment, the time interval ΔT between the time of sending the pre-conflict indication to the second user equipment and the time when the second user equipment is about to have a resource conflict is greater than or equal to the time interval threshold Tmax, so that the second user equipment receives the pre-conflict indication before the time when the second user equipment is about to have a resource conflict and can select resources.

[0107] In one implementation, a time interval threshold can be indicated via Radio Resource Control (RRC) signaling, and the first user equipment determines the time interval threshold Tmax based on the RRC signaling. For example... Figure 4 In this process, UEA uses the PSFCH resource corresponding to the current PSSCH resource of UEB to transmit a 1-bit pre-collision indication, and specifies the minimum time interval Tmax between the feedback pre-collision indication and the time slot where the pre-collision occurs through RRC, where ΔT (the time slot difference between the feedback pre-collision indication and the time slot where the pre-collision occurs) ≥ Tmax. Figure 4 It can also be understood as a design that uses the PSFCH resource transfer pre-collision indicator to achieve a Min Time Gap Precollison of 2 slots.

[0108] In related technologies, PSFCH resources are used to transmit 1-bit Hybrid Automatic Repeat Request (HARQ) feedback. Therefore, in this embodiment of the present disclosure, the PSFCH resources used to transmit pre-collision indications can be understood as PSFCH resources used to transmit HARQ feedback.

[0109] Figure 6 This is a flowchart illustrating a communication method according to an exemplary embodiment, such as... Figure 6 As shown, the communication method used in the first user equipment includes the following steps.

[0110] In step S31, the PSFCH resource mapped by the first PSSCH transmission resource is used to send HARQ feedback and pre-collision indication to the second user equipment.

[0111] In this embodiment of the disclosure, the HARQ feedback sent to the second user equipment using the PSFCH resource mapped by the first PSSCH transmission resource can be a 1-bit HARQ feedback.

[0112] In this embodiment of the disclosure, the pre-collision indication sent to the second user equipment using the PSFCH resource mapped by the first PSSCH transmission resource can be a 1-bit pre-collision indication.

[0113] The PSFCH used to carry HARQ feedback and pre-collision indication in this embodiment can be understood as a new PSFCH format. In this embodiment, the new PSFCH format is referred to as the first PSFCH format.

[0114] Figure 7 This is a flowchart illustrating a communication method according to an exemplary embodiment, such as... Figure 7 As shown, the communication method used in the first user equipment includes the following steps.

[0115] In step S41, HARQ feedback and pre-collision indication are carried through the first PSFCH format.

[0116] In this embodiment of the disclosure, HARQ feedback and pre-collision indication are sent through PSFCH resources in the first PSFCH format.

[0117] In the embodiments of this disclosure, the pre-conflict indication and HARQ feedback may reuse the same PSFCH resource or may not reuse the PSFCH resource.

[0118] In one embodiment, the communication method provided in this disclosure can reuse PSFCH resources in the same time and frequency domains for pre-collision indication and HARQ feedback.

[0119] Figure 8 This is a flowchart illustrating a communication method according to an exemplary embodiment, such as... Figure 8 As shown, the communication method used in the first user equipment includes the following steps.

[0120] In step S51, the HARQ feedback and pre-collision indication are multiplexed and transmitted on the same PSFCH resource in the time-frequency domain.

[0121] In this embodiment of the disclosure, the pre-collision indication can be a 1-bit pre-collision indication, and the HARQ feedback can be a 1-bit HARQ feedback.

[0122] This disclosure provides an embodiment of a novel 2-bit PSFCH format that simultaneously transmits HARQ feedback and pre-collision indication. Specifically, the newly designed 2-bit PSFCH format carries 1 bit of ACK / NACK feedback and 1 bit of pre-collision indication.

[0123] In this embodiment of the disclosure, to distinguish between HARQ feedback and pre-collision indication, a cycle shift can be designed to differentiate between them. This reuses the existing 2-bit HARQ feedback mechanism.

[0124] In one embodiment, a base sequence is transmitted using PSFCH resources with the same time and frequency domain, and the base sequence is cyclically shifted to indicate HARQ feedback and pre-collision indication. In one example, this embodiment uses PSFCH resources with the same time and frequency domain to transmit a base sequence of length 12. The base sequence, after cyclic shifting, can carry the transmitted information. For example, this sequence is mapped onto a single Physical Resource Block (PRB) and a single Orthogonal Frequency Division Multiplexing (OFDM) symbol, i.e., 1 bit of pre-collision indication and 1 bit of HARQ feedback. Figure 9 A schematic diagram illustrating how cycle shift can be used to distinguish between HARQ feedback and pre-collision indications, as shown in an exemplary embodiment of this disclosure, is illustrated. Figure 9 As shown, there are 4 cycleshifts, each rotating in units of π / 2. A phase of 0 represents (N, +collision), indicating NACK feedback and a pre-collision. A phase of π / 2 represents (N, -collision), indicating NACK feedback and no pre-collision. A phase of π represents (ACK, +collision), indicating ACK feedback and a pre-collision. A phase of 3π / 2 represents (ACK, -collision), indicating ACK feedback and no pre-collision.

[0125] In another implementation, the pre-collision indication and HARQ feedback in the communication method provided by this disclosure may be non-reused PSFCH resources.

[0126] Specifically, pre-collision indication and HARQ feedback can utilize PSFCH resources in a Frequency Division Multiplexing (FDM) manner. For example, HARQ feedback and pre-collision indication can be transmitted on different frequency domain resources.

[0127] For ease of description in this embodiment, the frequency domain for sending HARQ feedback is referred to as the first frequency domain, and the frequency domain for sending pre-collision indication is referred to as the second frequency domain.

[0128] Figure 10 This is a flowchart illustrating a communication method according to an exemplary embodiment, such as... Figure 10 As shown, the communication method used in the first user equipment includes the following steps.

[0129] In step S61, HARQ feedback is sent through the PSFCH resources of the first frequency domain, and a pre-collision indication is sent through the PSFCH resources of the second frequency domain.

[0130] In the communication method provided in this disclosure, different frequency domain resources can be configured for pre-collision indication and HARQ feedback, respectively.

[0131] Figure 11 This is a flowchart illustrating a communication method according to an exemplary embodiment, such as... Figure 11 As shown, the communication method used in the first user equipment includes the following steps.

[0132] In step S71, the first indication information and the second indication information are obtained.

[0133] The first indication information is used to indicate the PSFCH resources used for sending HARQ feedback, and the second indication information is used to indicate the PSFCH resources used for sending pre-collision indication.

[0134] In one embodiment, this disclosure may introduce two parameter values ​​to indicate the PSFCH resources used for sending HARQ feedback and the PSFCH resources used for sending pre-collision indication.

[0135] In one example, the parameter value sl-PSFCH-HARQ-RB-Set-r16 is introduced to represent the resource used for HARQ feedback, and sl-PSFCH-precollsion-RB-Set-r16 is introduced to represent the resource used for precollision indication.

[0136] In the communication method provided in this disclosure, different frequency domain resources can be configured for pre-collision indication and HARQ feedback using RRC. For example, the resource parameter value sl-PSFCH-HARQ-RB-Set-r16 for indicating HARQ feedback can be introduced into the RRC signaling, and the parameter value sl-PSFCH-precollsion-RB-Set-r16 for indicating pre-collision indication resources can be introduced into the RRC signaling.

[0137] It is understandable that in the R16 communication protocol, the frequency domain resources used for PSFCH transmission among the candidate resources for PSFCH are pre-configured through RRC and implemented in the frequency domain through a set of PRBs indicated by a bitmap. In one approach, the higher-layer parameter sl-PSFCH-RB-Set-r16 BIT STRING(SIZE(10..275)) is used, which indicates a bitmap of length 10 to 275. In the communication method provided in this disclosure embodiment, the following two parameter values ​​are introduced to ensure that the mapping criteria from PSFCH to pre-collision indication and HARQ feedback resources are the same.

[0138] Two parameter values:

[0139] sl-PSFCH-HARQ-RB-Set-r16 BIT STRING(SIZE(10..275))

[0140] sl-PSFCH-precollsion-RB-Set-r16 BIT STRING(SIZE(10..275)).

[0141] In the communication method provided in this embodiment, the PSFCH resources in the second frequency domain and the PSFCH resources in the second frequency domain have the same time domain resources.

[0142] Figure 12 This is a schematic diagram illustrating, according to an exemplary embodiment, the independent configuration of resources for pre-conflict indication and resources for HARQ feedback via RRC signaling. See also... Figure 12 As shown, PRB number 3 on the PSFCH resource is used to indicate the resource for transmitting HARQ feedback. PRB number 11 on the PSFCH resource is used to indicate the resource for transmitting pre-collision indication.

[0143] In the communication method provided in the embodiments of this disclosure, HARQ feedback and pre-collision indication can be sent in different time domains.

[0144] For ease of description in this embodiment, the time for sending HARQ feedback is referred to as the first time, and the time for sending pre-conflict indication is referred to as the second time.

[0145] Figure 13 This is a flowchart illustrating a communication method according to an exemplary embodiment, such as... Figure 13 As shown, the communication method used in the first user equipment includes the following steps.

[0146] In step S81, HARQ feedback is sent at a first time and a pre-conflict indication is sent at a second time, which is earlier than the first time.

[0147] In the communication method provided in this embodiment, PSFCH resources are not reused. HARQ is fed back at time T1, and a pre-collision indication is fed back at time T2. <T1。

[0148] In one implementation, the frequency domain resources of the HARQ feedback sent in the first time and the frequency domain resources of the HARQ feedback sent in the second time can also be different.

[0149] In the communication method provided in this disclosure, different frequency domain resources can be configured for pre-collision indication and HARQ feedback, respectively.

[0150] In one embodiment, the first user equipment can obtain first indication information and second indication information. The first indication information is used to indicate the PSFCH resources used for sending HARQ feedback, and the second indication information is used to indicate the PSFCH resources used for sending pre-collision indications.

[0151] In one embodiment, this disclosure may introduce two parameter values ​​to indicate the PSFCH resources used for sending HARQ feedback and the PSFCH resources used for sending pre-collision indication.

[0152] In one example, the parameter value sl-PSFCH-HARQ-RB-Set-r16 is introduced to represent the resource used for HARQ feedback, and sl-PSFCH-precollsion-RB-Set-r16 is introduced to represent the resource used for precollision indication.

[0153] In the communication method provided in this disclosure, different frequency domain resources can be configured for pre-collision indication and HARQ feedback using RRC. For example, the resource parameter value sl-PSFCH-HARQ-RB-Set-r16 for indicating HARQ feedback can be introduced into the RRC signaling, and the parameter value sl-PSFCH-precollsion-RB-Set-r16 for indicating pre-collision indication resources can be introduced into the RRC signaling.

[0154] In this embodiment of the disclosure, the PSSCH needs to be decoded and a Cyclic Redundancy Check (CRC) needs to be performed before sending the HARQ feedback, until the data is correctly decoded. However, whether a pre-collision has occurred can be determined by decoding the first-stage SCI, and the time of detecting the pre-collision indication is earlier than the time when the data decoding is completed. Therefore, the time for sending the pre-collision indication is set earlier than the time for sending the HARQ feedback. Furthermore, in the communication method provided by this embodiment of the disclosure, feeding back HARQ and pre-collision indications at different times can improve communication efficiency.

[0155] The communication method provided in this embodiment of the present disclosure, when a first user equipment determines that a resource conflict is about to occur in the reserved resources for data transmission, sends a pre-conflict indication to a second user equipment, thereby indicating whether a resource conflict has occurred in the reserved resources for data transmission.

[0156] In this embodiment of the present disclosure, the first user equipment sends a pre-conflict indication to the second user equipment. The second user equipment receives the pre-conflict indication sent by the first user equipment and can perform resource reselection based on the pre-conflict indication to reduce the probability of conflict.

[0157] Figure 14 This is a flowchart illustrating a communication method according to an exemplary embodiment, such as... Figure 14 As shown, the communication method used in the second user equipment includes the following steps.

[0158] In step S91, a pre-conflict indication sent by the first user equipment is received.

[0159] The pre-conflict indication is used to indicate that a resource conflict is about to occur in the reserved resources for data transmission by the second user equipment.

[0160] In step S92, resource selection is performed based on the pre-conflict indication.

[0161] In this embodiment of the disclosure, the second user equipment receives a pre-conflict indication and performs resource reselection based on the received pre-conflict indication to avoid the occurrence of a pre-conflict. For example, the resource selected by the second equipment for resource reselection may be a reserved resource different from the one where a resource conflict is about to occur.

[0162] Figure 15 This is a flowchart illustrating a communication method according to an exemplary embodiment, such as... Figure 15 As shown, the communication method used in the second user equipment includes the following steps.

[0163] In step S101, the PSFCH resource mapped by the first PSSCH transmission resource is used to receive the pre-collision indication sent by the first user equipment.

[0164] Wherein, the first PSSCH is the PSSCH in the time slot where the first PSCCH is located, and the first PSCCH is the PSCCH used to indicate the reserved time and frequency resources for the next PSSCH transmission.

[0165] In the communication method provided in this embodiment, the time interval ΔT between the time of sending the pre-conflict indication to the second user equipment and the time when the second user equipment is about to have a resource conflict is greater than or equal to the time interval threshold Tmax, so that the second user equipment receives the pre-conflict indication before the time when the second user equipment is about to have a resource conflict and can select resources.

[0166] Figure 16 This is a flowchart illustrating a communication method according to an exemplary embodiment, such as... Figure 16 As shown, the communication method used in the second user equipment includes the following steps.

[0167] In step S111, the PSFCH resource mapped by the first PSSCH transmission resource is used to receive HARQ feedback and pre-collision indication.

[0168] In this embodiment of the disclosure, the HARQ feedback received using the PSFCH resource mapped by the first PSSCH transmission resource can be a 1-bit HARQ feedback.

[0169] In this embodiment of the disclosure, the pre-collision indication received using the PSFCH resource mapped by the first PSSCH transmission resource can be a 1-bit pre-collision indication.

[0170] The PSFCH resource used for receiving HARQ feedback and pre-collision indication in this embodiment can be understood as a new PSFCH resource. In this embodiment, the PSFCH format corresponding to the new PSFCH resource is referred to as the first PSFCH format.

[0171] Figure 17 This is a flowchart illustrating a communication method according to an exemplary embodiment, such as... Figure 17 As shown, the communication method used in the second user equipment includes the following steps.

[0172] In step S121, HARQ feedback and pre-collision indication are received through the first PSFCH format.

[0173] In the embodiments of this disclosure, the pre-conflict indication and HARQ feedback may reuse the same PSFCH resource or may not reuse the PSFCH resource.

[0174] In one embodiment, the communication method provided in this disclosure can reuse PSFCH resources in the same time and frequency domains for pre-collision indication and HARQ feedback.

[0175] Figure 18 This is a flowchart illustrating a communication method according to an exemplary embodiment, such as... Figure 18 As shown, the communication method used in the second user equipment includes the following steps.

[0176] In step S131, HARQ feedback and pre-collision indication are received through PSFCH resources with the same time and frequency domain.

[0177] In one implementation, a base sequence of PSFCH resources with the same time and frequency domain is used to receive the base sequence, and HARQ feedback and pre-collision indication are determined based on the cyclically shifted base sequence.

[0178] In another implementation, the pre-collision indication and HARQ feedback in the communication method provided by this disclosure may be non-reused PSFCH resources.

[0179] The pre-collision indication and HARQ feedback can be implemented using PSFCH resources in an FDM manner. For example, HARQ feedback and pre-collision indication can be received in different frequency domains.

[0180] Figure 19 This is a flowchart illustrating a communication method according to an exemplary embodiment, such as... Figure 19 As shown, the communication method used in the second user equipment includes the following steps.

[0181] In step S141, HARQ feedback is received through the PSFCH resources of the first frequency domain, and pre-collision indication is received through the PSFCH resources of the second frequency domain.

[0182] In the communication method provided in this disclosure, different frequency domain resources can be configured for pre-collision indication and HARQ feedback, respectively.

[0183] In one embodiment, the second user equipment acquires first instruction information and second instruction information.

[0184] The first indication information is used to indicate the PSFCH resources used for sending HARQ feedback, and the second indication information is used to indicate the PSFCH resources used for sending pre-collision indication.

[0185] In one embodiment, this disclosure may introduce two parameter values ​​to indicate the PSFCH resources used for sending HARQ feedback and the PSFCH resources used for sending pre-collision indication.

[0186] In one example, the parameter value sl-PSFCH-HARQ-RB-Set-r16 is introduced to represent the resource used for HARQ feedback, and sl-PSFCH-precollsion-RB-Set-r16 is introduced to represent the resource used for precollision indication.

[0187] In the communication method provided in this disclosure, different frequency domain resources can be configured for pre-collision indication and HARQ feedback using RRC. For example, the resource parameter value sl-PSFCH-HARQ-RB-Set-r16 for indicating HARQ feedback can be introduced into the RRC signaling, and the parameter value sl-PSFCH-precollsion-RB-Set-r16 for indicating pre-collision indication resources can be introduced into the RRC signaling.

[0188] It is understandable that in the R16 communication protocol, the frequency domain resources used for PSFCH transmission among the candidate resources for PSFCH are pre-configured through RRC and implemented in the frequency domain through a set of PRBs indicated by a bitmap. In one approach, the higher-layer parameter sl-PSFCH-RB-Set-r16 BIT STRING(SIZE(10..275)) is used, which indicates a bitmap of length 10 to 275. In the communication method provided in this disclosure embodiment, the following two parameter values ​​are introduced to ensure that the mapping criteria from PSFCH to pre-collision indication and HARQ feedback resources are the same.

[0189] Two parameter values:

[0190] sl-PSFCH-HARQ-RB-Set-r16 BIT STRING(SIZE(10..275))

[0191] sl-PSFCH-precollsion-RB-Set-r16 BIT STRING(SIZE(10..275)).

[0192] In the communication method provided in this embodiment, the PSFCH resources in the second frequency domain and the PSFCH resources in the second frequency domain have the same time domain resources. That is, the second user equipment receives HARQ feedback and pre-collision indication in the same time domain using frequency division multiplexing.

[0193] In one implementation, the PSFCH resources in the second frequency domain and the PSFCH resources in the second frequency domain have different time domain resources.

[0194] Figure 20 This is a flowchart illustrating a communication method according to an exemplary embodiment, such as... Figure 20 As shown, the communication method used in the second user equipment includes the following steps.

[0195] In step S151, HARQ feedback is received at a first time and a pre-conflict indication is received at a second time, which is earlier than the first time.

[0196] It is understood that the technical implementation involved in the process of the first user equipment sending pre-conflict indication and / or HARQ feedback in the embodiments of this disclosure can be applied to the process of the second device receiving the pre-conflict indication and / or HARQ feedback sent by the first user equipment and performing resource selection in the embodiments of this disclosure. Therefore, for some technical implementations of the second device performing resource selection that are not described in detail, please refer to the relevant descriptions in the implementation process of the first user equipment performing resource selection, which will not be repeated here.

[0197] It is understood that the communication method provided in this disclosure is applicable to the process of configuring random access parameters during the interaction between the first user equipment and the second user equipment. The process of resource selection through interaction between the first user equipment and the second user equipment will not be described in detail in this disclosure.

[0198] It should be noted that those skilled in the art will understand that the various implementation methods / embodiments described above in this disclosure can be used in conjunction with the foregoing embodiments, or they can be used independently. Whether used alone or in conjunction with the foregoing embodiments, the implementation principle is similar. In this disclosure, some embodiments are described as implementations used together; of course, those skilled in the art will understand that such illustrative examples are not intended to limit the embodiments of this disclosure.

[0199] Based on the same concept, embodiments of this disclosure also provide a communication device.

[0200] It is understood that the communication device provided in this disclosure includes hardware structures and / or software modules corresponding to each function in order to achieve the above-mentioned functions. In conjunction with the units and algorithm steps of the various examples disclosed in this disclosure, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solutions of this disclosure.

[0201] Figure 21 This is a block diagram illustrating a communication device according to an exemplary embodiment. (Refer to...) Figure 21 The communication device 100 can be a first user equipment, including a processing unit 101 and a transmitting unit 102.

[0202] Processing unit 101 is configured to determine that a resource conflict is about to occur in the reserved resources for data transmission by the second user equipment. Sending unit 102 is configured to, in response to processing unit 101 determining that a resource conflict is about to occur in the reserved resources for data transmission by the second user equipment, send a pre-conflict indication to the second user equipment, the pre-conflict indication indicating that a resource conflict is about to occur in the reserved resources for data transmission by the second user equipment.

[0203] In one embodiment, the transmitting unit 102 uses the PSFCH resource mapped by the first PSSCH transmission resource to send a pre-collision indication to the second user equipment. Here, the first PSSCH is the PSSCH in the time slot where the first PSCCH is located, and the first PSCCH is the PSCCH used to indicate reserved time-frequency resources for the next PSSCH transmission.

[0204] In one embodiment, the sending unit 102 is further configured to send Hybrid Automatic Repeat Request (HARQ) feedback via PSFCH resources.

[0205] In one embodiment, the transmitting unit 102 carries HARQ feedback and pre-collision indication via a first PSFCH format.

[0206] In one embodiment, the transmitting unit 102 multiplexes the HARQ feedback and pre-collision indication on the same PSFCH resource in the time-frequency domain for transmission.

[0207] In one embodiment, the transmitting unit 102 transmits the base sequence using PSFCH resources in the same time-frequency domain, and then indicates HARQ feedback and pre-collision indication by cyclically shifting the base sequence.

[0208] In one embodiment, the transmitting unit 102 transmits HARQ feedback through the PSFCH resources in the first frequency domain and transmits pre-collision indication through the PSFCH resources in the second frequency domain.

[0209] In one implementation, the PSFCH resources in the second frequency domain and the PSFCH resources in the second frequency domain have the same time domain resources.

[0210] In one embodiment, the sending unit 102 sends HARQ feedback at a first time and sends a pre-collision indication at a second time, the second time being earlier than the first time.

[0211] In one embodiment, the communication device 100 further includes a receiving unit 103, which is configured to: acquire first indication information and second indication information, wherein the first indication information is used to indicate the PSFCH resources used for sending HARQ feedback, and the second indication information is used to indicate the PSFCH resources used for sending pre-collision indication.

[0212] In one implementation, the first indication information and the second indication information are carried in RRC signaling.

[0213] In one implementation, the time interval between sending a pre-conflict indication to the second user equipment and the time when the second user equipment is about to experience a resource conflict is greater than or equal to a time interval threshold.

[0214] In one implementation, the time interval threshold is determined based on RRC signaling.

[0215] Figure 22 This is a block diagram illustrating a communication device according to an exemplary embodiment. (Refer to...) Figure 22 The communication device 200 can be a second user equipment, including a receiving unit 201 and a processing unit 202.

[0216] The receiving unit 201 is configured to receive a pre-conflict indication sent by the first user equipment, the pre-conflict indication indicating that a resource conflict is about to occur in the reserved resources for data transmission by the second user equipment. The processing unit 202 is configured to perform resource selection based on the pre-conflict indication.

[0217] In one embodiment, the receiving unit 201 uses PSFCH resources mapped by the first PSSCH transmission resources to receive a pre-collision indication sent by the first user equipment. Here, the first PSSCH is the PSSCH in the time slot where the first PSCCH is located, and the first PSCCH is the PSCCH used to indicate reserved time-frequency resources for the next PSSCH transmission.

[0218] In one embodiment, the receiving unit 201 receives HARQ feedback through the PSFCH resource.

[0219] In one embodiment, the receiving unit 201 receives HARQ feedback and pre-collision indication via a first PSFCH format.

[0220] In one embodiment, the receiving unit 201 receives HARQ feedback and pre-collision indication through PSFCH resources in the same time and frequency domain.

[0221] In one embodiment, the receiving unit 201 uses the PSFCH resource with the same time and frequency domain to receive the base sequence, and determines the HARQ feedback and pre-collision indication based on the cyclically shifted base sequence.

[0222] In one embodiment, the receiving unit 201 receives HARQ feedback through the PSFCH resources in the first frequency domain and receives pre-collision indication through the PSFCH resources in the second frequency domain.

[0223] In one implementation, the PSFCH resources in the second frequency domain and the PSFCH resources in the second frequency domain have the same time domain resources.

[0224] In one embodiment, the receiving unit 201 receives HARQ feedback at a first time and receives a pre-conflict indication at a second time, the second time being earlier than the first time.

[0225] In one embodiment, the receiving unit 201 is further configured to acquire first indication information and second indication information, wherein the first indication information is used to indicate the PSFCH resources used for receiving HARQ feedback, and the second indication information is used to indicate the PSFCH resources used for receiving pre-collision indication.

[0226] In one implementation, the first indication information and the second indication information are carried in RRC signaling.

[0227] In one implementation, the time interval between receiving the pre-conflict indication and the time when the second user equipment is about to experience a resource conflict is greater than or equal to a time interval threshold.

[0228] In one implementation, the time interval threshold is determined based on RRC signaling.

[0229] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0230] Figure 23 This is a block diagram illustrating a communication device 300 according to an exemplary embodiment. For example, device 300 may be a first user equipment or a second user equipment involved in the above embodiments, such as a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0231] Reference Figure 23 The device 300 may include one or more of the following components: processing component 302, memory 304, power component 306, multimedia component 308, audio component 310, input / output (I / O) interface 312, sensor component 314, and communication component 316.

[0232] Processing component 302 typically controls the overall operation of device 300, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 302 may include one or more processors 320 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 302 may include one or more modules to facilitate interaction between processing component 302 and other components. For example, processing component 302 may include a multimedia module to facilitate interaction between multimedia component 308 and processing component 302.

[0233] Memory 304 is configured to store various types of data to support the operation of device 300. Examples of such data include instructions for any application or method operating on device 300, contact data, phonebook data, messages, pictures, videos, etc. Memory 304 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0234] The power supply component 306 provides power to the various components of the device 300. The power supply component 306 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power to the device 300.

[0235] Multimedia component 308 includes a screen that provides an output interface between the device 300 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 308 includes a front-facing camera and / or a rear-facing camera. When the device 300 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0236] Audio component 310 is configured to output and / or input audio signals. For example, audio component 310 includes a microphone (MIC) configured to receive external audio signals when device 300 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 304 or transmitted via communication component 316. In some embodiments, audio component 310 also includes a speaker for outputting audio signals.

[0237] I / O interface 312 provides an interface between processing component 302 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0238] Sensor assembly 314 includes one or more sensors for providing status assessments of various aspects of device 300. For example, sensor assembly 314 may detect the on / off state of device 300, the relative positioning of components such as the display and keypad of device 300, changes in the position of device 300 or a component of device 300, the presence or absence of user contact with device 300, the orientation or acceleration / deceleration of device 300, and temperature changes of device 300. Sensor assembly 314 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 314 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 314 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0239] Communication component 316 is configured to facilitate wired or wireless communication between device 300 and other devices. Device 300 can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 316 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 316 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0240] In an exemplary embodiment, the apparatus 300 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0241] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 304 including instructions, which can be executed by a processor 320 of the device 300 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0242] It can be further understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0243] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0244] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0245] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0246] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A communication method, characterized in that, The communication method, executed by the first user equipment, includes: If it is determined that a resource conflict is about to occur in the reserved resources for data transmission of the second user equipment, a pre-conflict indication is sent to the second user equipment, the pre-conflict indication being used to indicate that a resource conflict is about to occur in the reserved resources of the second user equipment. Sending a pre-collision indication to the second user equipment includes: Using the Physical Direct Feedback Channel (PSFCH) resources mapped by the first Physical Direct Shared Channel (PSSCH), a pre-conflict indication is sent to the second user equipment; wherein, the first PSSCH is the PSSCH on the time slot where the first Physical Direct Control Channel (PSCCH) is located, and the first PSCCH is used to indicate that a reserved PSSCH resource is about to be conflicted. Send a Hybrid Automatic Repeat Request (HARQ) response through the time slot where the PSFCH resource is located.

2. The communication method according to claim 1, characterized in that, The pre-collision indication is 1 bit.

3. The communication method according to claim 1, characterized in that, Sending the HARQ feedback and the pre-conflict indication includes: The HARQ feedback is sent through the PSFCH resources in the first frequency domain, and the pre-collision indication is sent through the PSFCH resources in the second frequency domain.

4. The communication method according to claim 3, characterized in that, The PSFCH resources in the first frequency domain and the PSFCH resources in the second frequency domain have the same time domain resources.

5. The communication method according to claim 1, characterized in that, The time interval between sending a pre-conflict indication to the second user equipment and the time when the second user equipment is about to experience a resource conflict is greater than or equal to a time interval threshold.

6. The communication method according to claim 1, characterized in that, The time interval between the first PSSCH and the PSFCH is greater than or equal to the minimum time interval.

7. The communication method according to claim 5, characterized in that, The time interval threshold is determined based on Radio Resource Control (RRC) signaling.

8. A communication method, characterized in that, The communication method, executed by a second user equipment, includes: Receive a pre-conflict indication sent by a first user equipment, the pre-conflict indication being used to indicate that a resource conflict is about to occur in the reserved resources of the second user equipment; Resource reselection is performed based on the pre-conflict indication; The receiving of the pre-conflict indication sent by the first user equipment includes: Using the Physical Direct Feedback Channel (PSFCH) resources mapped by the first Physical Direct Shared Channel (PSSCH) transmission resources, receive the pre-collision indication sent by the first user equipment. Wherein, the first PSSCH is the PSSCH on the time slot where the first physical direct control channel PSCCH is located, and the first PSCCH is used to indicate the reserved PSSCH resources; The Hybrid Automatic Repeat Request (HARQ) feedback is received through the time slot where the PSFCH resource is located.

9. The communication method according to claim 8, characterized in that, The pre-collision indication is 1 bit.

10. The communication method according to claim 8, characterized in that, Receiving the HARQ feedback and the pre-conflict indication includes: The HARQ feedback is received through the PSFCH resources in the first frequency domain, and the pre-collision indication is received through the PSFCH resources in the second frequency domain.

11. The communication method according to claim 10, characterized in that, The PSFCH resources in the first frequency domain and the PSFCH resources in the second frequency domain have the same time domain resources.

12. The communication method according to claim 8, characterized in that, The time interval between receiving the pre-conflict indication and the time when the second user equipment is about to experience a resource conflict is greater than or equal to the time interval threshold.

13. The communication method according to claim 8, characterized in that, The time interval between the first PSSCH and the PSFCH is greater than or equal to the minimum time interval.

14. The communication method according to claim 12, characterized in that, The time interval threshold is determined based on Radio Resource Control (RRC) signaling.

15. A first user equipment, characterized in that, The first user equipment includes: The processing unit is configured to determine that a resource conflict is about to occur in the reserved resources for data transmission by the second user equipment; The sending unit is configured to send a pre-conflict indication to the second user equipment, wherein a resource conflict is about to occur in the reserved resources for data transmission of the second user equipment, and the pre-conflict indication is used to indicate that a resource conflict is about to occur in the reserved resources of the second user equipment. The transmitting unit is configured to send a pre-conflict indication to the second user equipment using the Physical Direct Feedback Channel (PSFCH) resources mapped by the first Physical Direct Shared Channel (PSSCH); wherein the first PSSCH is the PSSCH on the time slot where the first Physical Direct Control Channel (PSCCH) is located, and the first PSCCH is used to indicate that a reserved PSSCH resource is about to be conflicted. The sending unit is configured to send Hybrid Automatic Repeat Request (HARQ) feedback through the time slot where the PSFCH resource is located.

16. The first user equipment according to claim 15, characterized in that, The pre-collision indication is 1 bit.

17. The first user equipment according to claim 15, characterized in that, The transmitting unit transmits the HARQ feedback through the PSFCH resources in the first frequency domain and transmits the pre-collision indication through the PSFCH resources in the second frequency domain.

18. The first user equipment according to claim 15, characterized in that, The time interval between the first PSSCH and the PSFCH is greater than or equal to the minimum time interval.

19. A second user equipment, characterized in that, The second user equipment includes: The receiving unit is configured to receive a pre-conflict indication sent by a first user equipment, the pre-conflict indication being used to indicate that a resource conflict is about to occur in the reserved resources of a second user equipment; The processing unit is configured to perform resource reselection based on the pre-conflict indication; The receiving unit is configured to receive a pre-conflict indication sent by a first user equipment using the Physical Direct Feedback Channel (PSFCH) resources mapped by the first Physical Direct Shared Channel (PSSCH); wherein the first PSSCH is the PSSCH on the time slot where the first Physical Direct Control Channel (PSCCH) is located, and the first PSCCH is used to indicate that a reserved PSSCH resource is about to be conflicted. The receiving unit is configured to receive Hybrid Automatic Repeat Request (HARQ) feedback through the time slot where the PSFCH resource is located.

20. The second user equipment according to claim 19, characterized in that, The pre-collision indication is 1 bit.

21. The second user equipment according to claim 19, characterized in that, The receiving unit receives the HARQ feedback through the PSFCH resources in the first frequency domain and receives the pre-collision indication through the PSFCH resources in the second frequency domain.

22. The second user equipment according to claim 19, characterized in that, The time interval between the first PSSCH and the PSFCH is greater than or equal to the minimum time interval.

23. A user equipment, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to perform the communication method according to any one of claims 1 to 7 or the communication method according to any one of claims 8 to 14.

24. A non-transitory computer-readable storage medium, wherein instructions in the storage medium, when executed by a processor, enable a user equipment to perform the communication method of any one of claims 1 to 7 or the communication method of any one of claims 8 to 14.

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