A method and device used in a node for wireless communication

Abstract

The present application discloses a method and apparatus in a node used for wireless communication. The first node performs first channel sensing; receives M first-class signaling and N second-class signaling; sends a first signal on a target time-frequency resource block; the first candidate time-frequency resource block belongs to a target resource pool; the target time-frequency resource block belongs to a target resource subset, and the target resource subset belongs to the target resource pool; any first-class signaling in the M first-class signaling and any second-class signaling in the N second-class signaling indicate the first candidate time-frequency resource block; any first-class signaling in the M first-class signaling and any second-class signaling in the N second-class signaling are not the same; the M and the N are used together to determine whether the first candidate time-frequency resource block belongs to the target resource subset. The present application effectively solves the problem of coordinating resource conflicts in the case of multiple collaborative users.

Description

Technical Field

[0001] The present application relates to a transmission method and device in a wireless communication system, and in particular to a transmission scheme and device related to a sidelink in wireless communication. Background Art

[0002] Since LTE (Long Term Evolution), 3GPP (3rd Generation Partner Project) has been developing SL (Sidelink) as a direct communication method between users, and completed the first NR SL (New Radio Sidelink) standard of "5G V2X with NR Sidelink" in Rel-16 (Release-16). In Rel-16, NR SL is mainly designed for V2X (Vehicle-To-Everything), but it can also be used for public safety.

[0003] However, due to time constraints, NR SL Rel-16 cannot fully support the business requirements and working scenarios identified by 3GPP for 5G V2X. Therefore, 3GPP will study enhanced NR SL in Rel-17. Summary of the invention

[0004] In the Rel-16 system, due to the distributed system of NR SL, users (UE, User Equipment) independently select resources, half-duplex (i.e. users cannot send and receive at the same time) or hidden node (Hidden UE) problems can easily cause two sending users to occupy the same SL resources to send signals to the same receiving user, thereby causing continuous interference and resource collision between users. Introducing inter-UE coordination is a feasible way to solve resource collisions between users. In multicast, a user may receive coordination messages from multiple different collaborative users. Due to the different working environments of multiple different collaborative users, the available resources or interference resources provided by the multiple coordination messages sent conflict with each other.

[0005] In response to the above problems, the present application discloses a resource selection method for multiple coordination messages, so as to effectively utilize the resources coordinated between users and solve the problems of half-duplex and hidden nodes. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the user equipment of the present application can be applied to the base station, and vice versa. In the absence of conflict, the embodiments and features in the embodiments of the present application can be arbitrarily combined with each other. Further, although the original intention of the present application is for SL, the present application can also be used for UL (Uplink). Further, although the original intention of the present application is for single-carrier communication, the present application can also be used for multi-carrier communication. Further, although the original intention of the present application is for single-antenna communication, the present application can also be used for multi-antenna communication. Further, although the original intention of the present application is for V2X scenarios, the present application is also applicable to communication scenarios between terminals and base stations, terminals and relays, and relays and base stations, and obtains similar technical effects in V2X scenarios. In addition, the use of a unified solution for different scenarios (including but not limited to V2X scenarios and communication scenarios between terminals and base stations) also helps to reduce hardware complexity and cost.

[0006] It should be noted that the interpretation of the terminology in this application refers to the definitions in the 3GPP specification protocols TS36 series, TS37 series and TS38 series, but can also refer to the definitions in the IEEE (Institute of Electrical and Electronics Engineers) specification protocols.

[0007] The present application discloses a method in a first node used for wireless communication, characterized by comprising:

[0008] Performing first channel sensing; receiving M first-type signaling and N second-type signaling, where M and N are both positive integers;

[0009] Sending a first signal on a target time-frequency resource block;

[0010] Among them, the first channel sensing is used to determine a target resource pool, and the target resource pool includes multiple time-frequency resource blocks; the first alternative time-frequency resource block is a time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool; the target time-frequency resource block belongs to a target resource subset, and the target resource subset includes a positive integer number of time-frequency resource blocks, and any time-frequency resource block included in the target resource subset belongs to the target resource pool; any first-class signaling among the M first-class signalings indicates the first alternative time-frequency resource block; any second-class signaling among the N second-class signalings indicates the first alternative time-frequency resource block, and any first-class signaling among the M first-class signalings and any second-class signaling among the N second-class signalings are not the same; the M and the N are used together to determine whether the first alternative time-frequency resource block belongs to the target resource subset.

[0011] As an embodiment, the problem to be solved by the present application is: the problem of conflict between coordination resources caused by multiple coordination messages sent by multiple collaborative users.

[0012] As an embodiment, the method of the present application is to establish an association between resources coordinated between users and resource selection.

[0013] As an embodiment, the method of the present application is: establishing an association between resources coordinated between users and the number of received signaling indicating the coordinated resources.

[0014] As an embodiment, the advantage of the above method is that it solves the problem of coordinating resource conflicts in the case of multiple cooperating users.

[0015] According to one aspect of the present application, the above method is characterized in that the number of the first type of signaling received by the first node and the number of the second type of signaling are used together to determine whether the first candidate time-frequency resource block is selected as the target time-frequency resource block.

[0016] According to one aspect of the present application, the above method is characterized in that the first signaling is any first-category signaling among the M first-category signalings; the second signaling is any second-category signaling among the N second-category signalings; and the first signaling is different from the second signaling.

[0017] According to one aspect of the present application, the above method is characterized in that senders of any two first-class signalings among the M first-class signalings are not co-located; senders of any two second-class signalings among the N second-class signalings are not co-located.

[0018] According to one aspect of the present application, the above method is characterized in that the size relationship between M and the first numerical value, and the size relationship between N and the second numerical value are used together to determine whether the first alternative time-frequency resource block belongs to the target resource subset; the first numerical value is predefined, or the first numerical value is configurable; the second numerical value is predefined, or the second numerical value is configurable.

[0019] According to one aspect of the present application, the above method is characterized in that the relationship between the M and the N is used to determine whether the first candidate time-frequency resource block belongs to the target resource subset.

[0020] According to one aspect of the present application, the above method is characterized in that it includes:

[0021] Sending a first target signaling on the target time-frequency resource block;

[0022] Among them, the first channel sensing is performed in a first resource pool, and the first resource pool includes multiple time-frequency resource blocks; any time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool is associated with a time-frequency resource block in the first resource pool; the first alternative time-frequency resource block is associated with a first time-frequency resource block, and the first time-frequency resource block is one of the multiple time-frequency resource blocks included in the first resource pool; the measurement value of the first time-frequency resource block is not higher than a first threshold; the first target signaling is used to indicate the target time-frequency resource block; the first target signaling includes a first priority, and the first priority is used to determine the first threshold.

[0023] According to one aspect of the present application, the above method is characterized in that the first node is a user equipment.

[0024] According to one aspect of the present application, the above method is characterized in that the first node is a relay node.

[0025] According to one aspect of the present application, the above method is characterized in that the first node is a base station.

[0026] The present application discloses a method used in a second node of wireless communication, characterized by comprising:

[0027] Send a first-class signaling;

[0028] Receiving a first target signaling and a first signal on a target time-frequency resource block;

[0029] Among them, the first type of signaling is used to indicate a first alternative time-frequency resource block; the target resource pool includes multiple time-frequency resource blocks; the first alternative time-frequency resource block is a time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool; the target time-frequency resource block belongs to a target resource subset, the target resource subset includes a positive integer number of time-frequency resource blocks, and any time-frequency resource block included in the target resource subset belongs to the target resource pool; the receiver of the first type of signaling is used to determine whether the first alternative time-frequency resource block belongs to the target resource subset; the first target signaling indicates the target time-frequency resource block.

[0030] According to one aspect of the present application, the above method is characterized in that the second node is a user equipment.

[0031] According to one aspect of the present application, the above method is characterized in that the second node is a relay node.

[0032] According to one aspect of the present application, the above method is characterized in that the second node is a base station.

[0033] The present application discloses a method in a third node used for wireless communication, characterized by comprising:

[0034] Send a second type of signaling;

[0035] Receiving a first target signaling and a first signal on a target time-frequency resource block;

[0036] Among them, the second type of signaling is used to indicate a first alternative time-frequency resource block; the target resource pool includes multiple time-frequency resource blocks; the first alternative time-frequency resource block is a time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool; the target time-frequency resource block belongs to a target resource subset, the target resource subset includes a positive integer number of time-frequency resource blocks, and any time-frequency resource block included in the target resource subset belongs to the target resource pool; the receiver of the second type of signaling is used to determine whether the first alternative time-frequency resource block belongs to the target resource subset; the first target signaling indicates the target time-frequency resource block.

[0037] According to one aspect of the present application, the above method is characterized in that the third node is a base station.

[0038] According to one aspect of the present application, the above method is characterized in that the third node is a relay node.

[0039] According to one aspect of the present application, the above method is characterized in that the third node is a user equipment.

[0040] The present application discloses a first node used for wireless communication, characterized in that it includes:

[0041] A first receiver performs first channel sensing; receives M first-type signaling and N second-type signaling, where M and N are both positive integers;

[0042] A first transmitter sends a first signal on a target time-frequency resource block;

[0043] Among them, the first channel sensing is used to determine a target resource pool, and the target resource pool includes multiple time-frequency resource blocks; the first alternative time-frequency resource block is a time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool; the target time-frequency resource block belongs to a target resource subset, and the target resource subset includes a positive integer number of time-frequency resource blocks, and any time-frequency resource block included in the target resource subset belongs to the target resource pool; any first-class signaling among the M first-class signalings indicates the first alternative time-frequency resource block; any second-class signaling among the N second-class signalings indicates the first alternative time-frequency resource block, and any first-class signaling among the M first-class signalings and any second-class signaling among the N second-class signalings are not the same; the M and the N are used together to determine whether the first alternative time-frequency resource block belongs to the target resource subset.

[0044] The present application discloses a second node used for wireless communication, characterized in that it includes:

[0045] A second transmitter sends a first type of signaling;

[0046] A second receiver receives the first target signaling and the first signal on the target time-frequency resource block;

[0047] Among them, the first type of signaling is used to indicate a first alternative time-frequency resource block; the target resource pool includes multiple time-frequency resource blocks; the first alternative time-frequency resource block is a time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool; the target time-frequency resource block belongs to a target resource subset, the target resource subset includes a positive integer number of time-frequency resource blocks, and any time-frequency resource block included in the target resource subset belongs to the target resource pool; the receiver of the first type of signaling is used to determine whether the first alternative time-frequency resource block belongs to the target resource subset; the first target signaling indicates the target time-frequency resource block.

[0048] The present application discloses a third node used for wireless communication, characterized in that it includes:

[0049] A third transmitter sends a second type of signaling;

[0050] A third receiver receives the first target signaling and the first signal on the target time-frequency resource block;

[0051] Among them, the second type of signaling is used to indicate a first alternative time-frequency resource block; the target resource pool includes multiple time-frequency resource blocks; the first alternative time-frequency resource block is a time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool; the target time-frequency resource block belongs to a target resource subset, the target resource subset includes a positive integer number of time-frequency resource blocks, and any time-frequency resource block included in the target resource subset belongs to the target resource pool; the receiver of the second type of signaling is used to determine whether the first alternative time-frequency resource block belongs to the target resource subset; the first target signaling indicates the target time-frequency resource block.

[0052] As an embodiment, the present application has the following advantages:

[0053] -The problem to be solved by this application is: the problem of conflict between coordination resources caused by multiple collaborative users sending multiple coordination messages.

[0054] - This application establishes a connection between resources coordinated between users and resource selection.

[0055] - The present application establishes an association between the resources coordinated between users and the number of received signaling indicating the coordinated resources.

[0056] -This application solves the problem of coordinating resource conflicts in the case of multiple collaborative users.

[0057] -In the present application, the number of the first type of signaling and the number of the second type of signaling received by the first node are used together to determine whether the first candidate time-frequency resource block is selected as the target time-frequency resource block. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0059] Figure 1 A processing flow chart of a first node according to an embodiment of the present application is shown;

[0060] Figure 2 A schematic diagram of a network architecture according to an embodiment of the present application is shown;

[0061] Figure 3 A schematic diagram showing a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application is shown;

[0062] Figure 4 A schematic diagram showing a first communication device and a second communication device according to an embodiment of the present application is shown;

[0063] Figure 5A wireless signal transmission flow chart according to an embodiment of the present application is shown;

[0064] Figure 6 A schematic diagram showing the relationship between the first resource pool, the first time domain resource block, the target resource pool and the first candidate time-frequency resource block according to an embodiment of the present application;

[0065] Figure 7 A schematic diagram showing the relationship between the first signaling, M first-type signalings and the second signaling, and N second-type signalings according to an embodiment of the present application;

[0066] Figure 8 A flowchart of determining whether a first candidate time-frequency resource block belongs to a target resource subset according to an embodiment of the present application is shown;

[0067] Fig. 9 A flowchart of determining whether a first candidate time-frequency resource block belongs to a target resource subset according to an embodiment of the present application is shown;

[0068] Fig.10 A structural block diagram of a processing device used in a first node according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0069] The technical solution of the present application will be further described in detail below in conjunction with the accompanying drawings. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other.

[0070] Example 1

[0071] Embodiment 1 illustrates a processing flow chart of the first node of an embodiment of the present application, as shown in the attached Figure 1 As shown in the attached Figure 1 In the example, each box represents a step.

[0072] In Example 1, the first node in the present application first executes step 101 to perform first channel sensing; then executes step 102 to receive M first-type signaling and N second-type signaling; finally executes step 103 to send a first signal on a target time-frequency resource block; the first channel sensing is used to determine a target resource pool, the target resource pool includes multiple time-frequency resource blocks; the first candidate time-frequency resource block is a time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool; the target time-frequency resource block belongs to a target resource subset, the target resource subset It includes a positive integer number of time-frequency resource blocks, and any time-frequency resource blocks included in the target resource subset belong to the target resource pool; any first-class signaling among the M first-class signalings indicates the first alternative time-frequency resource block; any second-class signaling among the N second-class signalings indicates the first alternative time-frequency resource block, and any first-class signaling among the M first-class signalings and any second-class signaling among the N second-class signalings are different; the M and the N are used together to determine whether the first alternative time-frequency resource block belongs to the target resource subset.

[0073] As an embodiment, the second resource pool is used for sidelink (SL) transmission.

[0074] As an embodiment, the second resource pool includes all or part of the resources of the secondary link resource pool (SL Resource Pool).

[0075] As an embodiment, the second resource pool includes all or part of the resources of the secondary link transmission resource pool (SL Transmission Resource Pool).

[0076] As an embodiment, the second resource pool includes all or part of the resources of the secondary link reception resource pool (SL Reception Resource Pool).

[0077] As an embodiment, the second resource pool includes PSCCH (Physical Sidelink Control Channel).

[0078] As an embodiment, the second resource pool includes PSSCH (Physical Sidelink Shared Channel).

[0079] As an embodiment, the second resource pool includes PSFCH (Physical Sidelink Feedback Channel).

[0080] As an embodiment, the second resource pool is used to transmit SL RS (Sidelink Reference Signal, sidelink reference signal).

[0081] As an embodiment, the SL RS includes SL CSI-RS (Sidelink Channel State Information Reference Signal, sidelink channel state information reference signal).

[0082] As an embodiment, the SL RS includes a PSCCH DMRS (Demodulation Reference Signal).

[0083] As an embodiment, the SL RS includes PSSCH DMRS.

[0084] As an embodiment, the second resource pool includes a plurality of REs (Resource Elements).

[0085] As an embodiment, any RE among the multiple REs included in the second resource pool occupies a multi-carrier symbol in the time domain and occupies a subcarrier in the frequency domain.

[0086] As an embodiment, the second resource pool includes multiple time domain resource blocks in the time domain.

[0087] As an embodiment, the second resource pool includes multiple frequency domain resource blocks in the frequency domain.

[0088] As an embodiment, the second resource pool includes multiple time-frequency resource blocks.

[0089] As an embodiment, the second resource pool includes multiple time domain resource blocks in the time domain, and the second resource pool includes multiple frequency domain resource blocks in the frequency domain.

[0090] As an embodiment, any time domain resource block among the multiple time domain resource blocks included in the time domain of the second resource pool includes a positive integer number of multi-carrier symbols (Symbol(s)).

[0091] As an embodiment, any time domain resource block among the multiple time domain resource blocks included in the time domain of the second resource pool includes a positive integer number of time slots (Slot(s)).

[0092] As an embodiment, any frequency domain resource block among the multiple frequency domain resource blocks included in the frequency domain of the second resource pool includes a positive integer number of subcarriers (Subcarrier(s)).

[0093] As an embodiment, any frequency domain resource block among the multiple frequency domain resource blocks included in the second resource pool in the frequency domain includes a positive integer number of physical resource blocks (Physical Resource Block(s), PRB(s)).

[0094] As an embodiment, any frequency domain resource block among the multiple frequency domain resource blocks included in the second resource pool in the frequency domain includes a positive integer number of subchannels (Subchannel(s)).

[0095] As an embodiment, any time-frequency resource block among the multiple time-frequency resource blocks included in the second resource pool occupies a positive integer number of time slots in the time domain and a positive integer number of continuous sub-channels in the frequency domain.

[0096] As an embodiment, any time-frequency resource block among the multiple time-frequency resource blocks included in the second resource pool occupies a positive integer number of multi-carrier symbols in the time domain and a positive integer number of continuous sub-channels in the frequency domain.

[0097] As an embodiment, any time-frequency resource block among the multiple time-frequency resource blocks included in the second resource pool occupies a positive integer number of time slots in the time domain and a positive integer number of continuous physical resource blocks in the frequency domain.

[0098] As an embodiment, any time-frequency resource block among the multiple time-frequency resource blocks included in the second resource pool occupies a positive integer number of multi-carrier symbols in the time domain and a positive integer number of continuous physical resource blocks in the frequency domain.

[0099] As an embodiment, any time-frequency resource block among the multiple time-frequency resource blocks included in the second resource pool includes a positive integer number of RE(s).

[0100] As an embodiment, the second resource pool is configured by higher layer signaling.

[0101] As an embodiment, the multiple time-frequency resource blocks included in the second resource pool are configured by higher-layer signaling.

[0102] As an embodiment, the multiple time domain resource blocks included in the second resource pool in the time domain are pre-configured.

[0103] As an embodiment, the multiple time domain resource blocks included in the second resource pool in the time domain are configured by higher layer signaling.

[0104] As an embodiment, the multiple frequency domain resource blocks included in the second resource pool in the frequency domain are configured by higher layer signaling.

[0105] As an embodiment, the second resource pool is configured by signaling SL-ResourcePool.

[0106] As an embodiment, the specific definition of the SL-ResourcePool refers to section 6.3.5 of TS8.331.

[0107] As an embodiment, the target resource pool includes multiple REs.

[0108] As an embodiment, the target resource pool includes multiple time domain resource blocks in the time domain.

[0109] As an embodiment, the target resource pool includes multiple frequency domain resource blocks in the frequency domain.

[0110] As an embodiment, the target resource pool includes multiple time domain resource blocks in the time domain, and the target resource pool includes multiple frequency domain resource blocks in the frequency domain.

[0111] As an embodiment, the target resource pool includes multiple time-frequency resource blocks.

[0112] As an embodiment, the second resource pool includes the target resource pool.

[0113] As an embodiment, any time domain resource block among the multiple time domain resource blocks included in the time domain by the target resource pool is a time domain resource block among the multiple time domain resource blocks included in the time domain by the second resource pool.

[0114] As an embodiment, any frequency domain resource block among the multiple frequency domain resource blocks included in the frequency domain of the target resource pool is a frequency domain resource block among the multiple frequency domain resource blocks included in the frequency domain of the second resource pool.

[0115] As an embodiment, any time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool is a time-frequency resource block among the multiple time-frequency resource blocks included in the second resource pool.

[0116] As an embodiment, the target resource pool is used for resource selection.

[0117] As an embodiment, the target resource pool is used for PSSCH (Physical Sidelink Shared Channel) resource selection in SL (Sidelink) resource allocation mode 2.

[0118] As an embodiment, the target resource pool is reported to higher layers of the first node.

[0119] As an embodiment, the target resource pool includes PSCCH.

[0120] As an embodiment, the target resource pool includes PSSCH.

[0121] As an embodiment, the target resource pool includes PSFCH.

[0122] As an embodiment, the target resource pool is used to transmit the SL RS.

[0123] As an embodiment, the first channel sensing is used to determine the target resource pool.

[0124] As an embodiment, the first channel sensing and the M first-type signaling are used together to determine the target resource pool.

[0125] As an embodiment, the first channel sensing is used to determine the first target resource pool, the first target resource pool includes a positive integer number of time-frequency resource blocks; the M first-class signalings indicate a second target resource pool, the second target resource pool includes a positive integer number of time-frequency resource blocks; the target resource pool is the collection of the positive integer number of time-frequency resource blocks included in the first target resource pool and the positive integer number of time-frequency resource blocks included in the second target resource pool.

[0126] As an embodiment, any time-frequency resource block among the positive integer number of time-frequency resource blocks included in the first target resource pool belongs to the target resource pool.

[0127] As an embodiment, any time-frequency resource block among the positive integer number of time-frequency resource blocks included in the second target resource pool belongs to the target resource pool.

[0128] As an embodiment, the first target time-frequency resource block is one of the multiple time-frequency resource blocks included in the target resource pool, and the first target time-frequency resource block does not belong to the second target resource pool.

[0129] As an embodiment, the second target time-frequency resource block is one of the multiple time-frequency resource blocks included in the target resource pool, and the second target time-frequency resource block does not belong to the first target resource pool.

[0130] As an embodiment, the first target time-frequency resource block is one of the positive integer time-frequency resource blocks included in the first target resource pool, the first target time-frequency resource block belongs to the target resource pool, and the first target time-frequency resource block does not belong to the second target resource pool.

[0131] As an embodiment, the second target time-frequency resource block is one of the positive integer time-frequency resource blocks included in the second target resource pool, the second target time-frequency resource block belongs to the target resource pool, and the second target time-frequency resource block does not belong to the first target resource pool.

[0132] As an embodiment, the target resource subset includes multiple REs.

[0133] As an embodiment, the target resource subset includes a positive integer number of time domain resource blocks in the time domain.

[0134] As an embodiment, the target resource subset includes a positive integer number of time domain resource blocks in the frequency domain.

[0135] As an embodiment, the target resource subset includes a positive integer number of time domain resource blocks in the time domain, and the target resource subset includes a positive integer number of time domain resource blocks in the frequency domain.

[0136] As an embodiment, the target resource subset includes a positive integer number of time-frequency resource blocks.

[0137] As an embodiment, the target resource pool includes the target resource subset.

[0138] As an embodiment, any time domain resource block among the positive integer number of time domain resource blocks included in the target resource subset in the time domain is one time domain resource block among the multiple time domain resource blocks included in the target resource pool.

[0139] As an embodiment, any frequency domain resource block among the positive integer number of frequency domain resource blocks included in the target resource subset in the frequency domain is a frequency domain resource block among the multiple frequency domain resource blocks included in the target resource pool.

[0140] As an embodiment, any time-frequency resource block among the positive integer number of time-frequency resource blocks included in the target resource subset is a time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool.

[0141] As an embodiment, any time-frequency resource block among the positive integer number of time-frequency resource blocks included in the target resource subset belongs to the target resource pool.

[0142] As an embodiment, the target resource subset is used for resource selection.

[0143] As an embodiment, the target resource subset is used for PSSCH resource selection in SL resource allocation mode 2.

[0144] As an embodiment, the target resource subset is reported to a higher layer of the first node.

[0145] As an embodiment, any time-frequency resource block in the target resource subset includes PSCCH.

[0146] As an embodiment, any time-frequency resource block in the target resource subset includes PSSCH.

[0147] As an embodiment, at least one time-frequency resource block in the target resource subset includes PSFCH.

[0148] As an embodiment, at least one time-frequency resource block in the target resource subset is used to transmit the SL RS.

[0149] As an embodiment, the target resource subset includes the target time-frequency resource block.

[0150] As an embodiment, the target time-frequency resource block belongs to the target resource subset.

[0151] As an embodiment, the target time-frequency resource block is one of the positive integer number of time-frequency resource blocks included in the target resource subset.

[0152] As an embodiment, the time domain resources occupied by the target time-frequency resource block in the time domain include a time domain resource block in the target resource subset.

[0153] As an embodiment, the frequency domain resources occupied by the target time-frequency resource block in the frequency domain include a frequency domain resource block in the target resource subset.

[0154] As an embodiment, the target time-frequency resource block includes multiple REs.

[0155] As an embodiment, the target time-frequency resource block includes a positive integer number of multi-carrier symbols in the time domain and a positive integer number of sub-channels in the frequency domain.

[0156] As an embodiment, the target time-frequency resource block is used to send the first signal.

[0157] As an embodiment, the target time-frequency resource block is used to send the first target signaling and the first signal.

[0158] As an embodiment, the target time-frequency resource block includes PSCCH.

[0159] As an embodiment, the target time-frequency resource block includes PSSCH.

[0160] As an embodiment, the target time-frequency resource block includes PSFCH.

[0161] As an embodiment, the first node autonomously determines the target time-frequency resource block from the target resource subset.

[0162] As an embodiment, the first node autonomously selects the target time-frequency resource block from the target resource subset.

[0163] As an embodiment, the target time-frequency resource block is a time-frequency resource block autonomously selected by the first node from the positive integer number of time-frequency resource blocks included in the target resource subset.

[0164] As an embodiment, the target time-frequency resource block is autonomously selected by the first node from the target resource subset.

[0165] As an embodiment, the first node is indicated the target time-frequency resource block, and the target time-frequency resource block belongs to the target resource subset.

[0166] As an embodiment, the first node is indicated the position of the target time-frequency resource block among the positive integer number of time-frequency resource blocks included in the target resource subset.

[0167] As an embodiment, the first node is indicated the index of the positive integer number of time-frequency resource blocks included in the target time-frequency resource block in the target resource subset.

[0168] As an embodiment, the time domain resource block occupied by the target time-frequency resource block in the time domain is the earliest time domain resource block in the time domain among the positive integer number of time domain resource blocks included in the target resource subset.

[0169] As an embodiment, the target time-frequency resource block is a time-frequency resource block in the target resource subset that is indicated by the M first-type signalings.

[0170] As an embodiment, the target time-frequency resource block is a time-frequency resource block among the positive integer number of time-frequency resource blocks included in the target resource subset, and the target time-frequency resource block is a time-frequency resource block indicated by any first-type signaling among the M first-type signalings.

[0171] As an embodiment, the M first-class signalings respectively indicate M first-class time-frequency resource block sets, any one of the M first-class time-frequency resource block sets includes a positive integer number of time-frequency resource blocks in the second resource pool, and any one of the M first-class time-frequency resource block sets includes the target time-frequency resource block.

[0172] As an embodiment, the M first-class signalings respectively indicate M first-class time-frequency resource block sets, any one of the M first-class time-frequency resource block sets includes at least one time-frequency resource block among the positive integer number of time-frequency resource blocks in the target resource subset, and any one of the M first-class time-frequency resource block sets includes the target time-frequency resource block.

[0173] As an embodiment, the first signaling is any first-class signaling among the M first-class signalings, and the first time-frequency resource block set is a first-class time-frequency resource block set among the M first-class time-frequency resource block sets indicated by the first signaling; the first time-frequency resource block set includes a positive integer number of time-frequency resource blocks, and any time-frequency resource block among the positive integer number of time-frequency resource blocks included in the first time-frequency resource block set is a time-frequency resource block in the second resource pool, and the target time-frequency resource block is a time-frequency resource block among the positive integer number of time-frequency resource blocks included in the first time-frequency resource block set.

[0174] As an embodiment, the target resource subset includes a target time-frequency resource block and a second target time-frequency resource block, the target time-frequency resource block belongs to the first time-frequency resource block set, and the second target time-frequency resource block does not belong to the first time-frequency resource block set.

[0175] As an embodiment, the target resource subset includes a target time-frequency resource block and a second target time-frequency resource block, the target time-frequency resource block belongs to the first time-frequency resource block set, the second target time-frequency resource block also belongs to the first time-frequency resource block set, the target time-frequency resource block is not indicated by any second type of signaling among the N second type of signaling, and the second alternative time-frequency resource block is indicated by one of the N second type of signaling.

[0176] As an embodiment, the target resource subset includes a target time-frequency resource block and a second target time-frequency resource block, and the time domain resources occupied by the target time-frequency resource block are earlier than the time domain resources occupied by the second target time-frequency resource block.

[0177] As an embodiment, the target resource subset includes a target time-frequency resource block and a second target time-frequency resource block, the target time-frequency resource block is associated with a first time-frequency resource block in the second resource pool, the second target time-frequency resource block is associated with a second time-frequency resource block in the second resource pool, and the measurement value for the first time-frequency resource block is lower than the measurement value for the second time-frequency resource block.

[0178] As an embodiment, the measurement value for the first time-frequency resource block includes RSRP (Reference Signal Received Power).

[0179] As an embodiment, the measurement value for the first time-frequency resource block includes RSSI (Received Signal Strength Indicator).

[0180] As an embodiment, the measurement value for the second time-frequency resource block includes RSRP.

[0181] As an embodiment, the measurement value for the second time-frequency resource block includes RSSI.

[0182] As an embodiment, the target time-frequency resource block is the first candidate time-frequency resource block.

[0183] As an embodiment, the target time-frequency resource block is not the first candidate time-frequency resource block.

[0184] As an embodiment, the target resource pool includes the first candidate time-frequency resource block.

[0185] As an embodiment, the first candidate time-frequency resource block belongs to the target resource pool.

[0186] As an embodiment, the first candidate time-frequency resource block is a time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool.

[0187] As an embodiment, the first candidate time-frequency resource block includes multiple REs.

[0188] As an embodiment, the first candidate time-frequency resource block includes a positive integer number of multi-carrier symbols in the time domain and a positive integer number of sub-channels in the frequency domain.

[0189] As an embodiment, the target resource subset includes the first alternative time-frequency resource block.

[0190] As an embodiment, the first candidate time-frequency resource block belongs to the target resource subset.

[0191] As an embodiment, the target time-frequency resource block is one of the positive integer number of time-frequency resource blocks included in the target resource subset.

[0192] As an embodiment, the target resource subset does not include the first alternative time-frequency resource block.

[0193] As an embodiment, the first candidate time-frequency resource block does not belong to the target resource subset.

[0194] As an embodiment, the first candidate time-frequency resource block is different from any time-frequency resource block among the positive integer number of time-frequency resource blocks included in the target resource subset.

[0195] As an embodiment, any first-category signaling among the M first-category signaling includes one or more fields in a PHY layer (Physical Layer) signaling.

[0196] As an embodiment, any first-category signaling among the M first-category signalings includes one or more fields in a SCI (Sidelink Control Information).

[0197] As an embodiment, any first-category signaling among the M first-category signalings includes an SCI.

[0198] As an embodiment, any first-type signaling among the M first-type signaling includes at least one of multiple fields in the first-level SCI format and at least one of multiple fields in the second-level SCI format.

[0199] As an embodiment, the definition of the first-level SCI format refers to Section 8.3 of 3GPP TS38.212.

[0200] As an embodiment, the definition of the second-level SCI format refers to Section 8.4 of 3GPP TS38.212.

[0201] As an embodiment, any first-category signaling among the M first-category signalings includes all or part of a higher layer signaling (Higher Layer Signaling).

[0202] As an embodiment, any first-category signaling among the M first-category signalings includes all or part of an RRC (Radio Resource Control) layer signaling.

[0203] As an embodiment, any first-category signaling among the M first-category signaling includes one or more fields in an RRC IE (Radio Resource Control Information Element).

[0204] As an embodiment, any first-category signaling among the M first-category signalings includes all or part of a PC5-RRC signaling.

[0205] As an embodiment, any first-category signaling among the M first-category signalings includes all or part of a MAC (Multimedia Access Control) layer signaling.

[0206] As an embodiment, any first-category signaling among the M first-category signaling includes one or more fields in a MAC CE (Multimedia Access Control Control Element).

[0207] As an embodiment, any first-category signaling among the M first-category signalings includes a SL IE (Sidelink Information Element).

[0208] As an embodiment, the channel occupied by any first-category signaling among the M first-category signalings includes PSCCH.

[0209] As an embodiment, the channel occupied by any first-category signaling among the M first-category signalings includes PSSCH.

[0210] As an embodiment, any first-type signaling among the M first-type signaling indicates the time domain resources occupied by the first candidate time-frequency resource block.

[0211] As an embodiment, any first type of signaling among the M first type of signaling indicates the index of the time domain resource block occupied by the first candidate time-frequency resource block in the time domain among the multiple time domain resource blocks included in the second resource pool.

[0212] As an embodiment, any first-type signaling among the M first-type signaling indicates the frequency domain resources occupied by the first candidate time-frequency resource block.

[0213] As an embodiment, any first type of signaling among the M first type of signaling indicates the index of the frequency domain resource block occupied by the first candidate time-frequency resource block in the frequency domain among the multiple frequency domain resource blocks included in the second resource pool.

[0214] As an embodiment, any first-type signaling among the M first-type signaling indicates the time-frequency resources occupied by the first candidate time-frequency resource block.

[0215] As an embodiment, any first type of signaling among the M first type of signaling indicates the index of the first candidate time-frequency resource block in the multiple time-frequency resource blocks included in the second resource pool.

[0216] As an embodiment, the first candidate time-frequency resource block is indicated by any first-type signaling among the M first-type signalings.

[0217] As an embodiment, any one of the M first-class signalings indicates a positive integer number of time-frequency resource blocks in the second resource pool, and the first candidate time-frequency resource block is a time-frequency resource block among the positive integer number of time-frequency resource blocks in the second resource pool indicated by any one of the M first-class signalings.

[0218] As an embodiment, the M first-class signalings respectively indicate M first-class time-frequency resource block sets, any one of the M first-class time-frequency resource block sets includes a positive integer number of time-frequency resource blocks in the second resource pool, and any one of the M first-class time-frequency resource block sets includes the first alternative time-frequency resource block.

[0219] As an embodiment, the first signaling is any first type of signaling among the M first type of signaling, and the first time-frequency resource block set is a first type of time-frequency resource block set among the M first type of time-frequency resource block sets indicated by the first signaling.

[0220] As an embodiment, the first time-frequency resource block set includes a positive integer number of time-frequency resource blocks, any time-frequency resource block among the positive integer number of time-frequency resource blocks included in the first time-frequency resource block set is a time-frequency resource block in the second resource pool, and the first alternative time-frequency resource block is a time-frequency resource block among the positive integer number of time-frequency resource blocks included in the first time-frequency resource block set.

[0221] As an embodiment, the first time-frequency resource block set is obtained by the sender of the first signaling through channel perception.

[0222] As an embodiment, the first time-frequency resource block set is the time-frequency resources recommended by the sender of the first signaling to the first node for sending.

[0223] As an embodiment, the first time-frequency resource block set is the time-frequency resource indicated by the sender of the first signaling for sending the first signal.

[0224] As an embodiment, any second-type signaling among the N second-type signaling includes one or more fields in a PHY layer signaling.

[0225] As an embodiment, any second-type signaling among the N second-type signaling includes one or more fields in an SCI.

[0226] As an embodiment, any second-type signaling among the N second-type signaling includes an SCI.

[0227] As an embodiment, any second-type signaling among the N second-type signaling includes at least one of multiple fields in the first-level SCI format and at least one of multiple fields in the second-level SCI format.

[0228] As an embodiment, any second-type signaling among the N second-type signaling includes all or part of a higher-layer signaling.

[0229] As an embodiment, any second-type signaling among the N second-type signalings includes all or part of an RRC layer signaling.

[0230] As an embodiment, any second-type signaling among the N second-type signaling includes one or more fields in an RRC IE.

[0231] As an embodiment, any second-type signaling among the N second-type signalings includes all or part of a PC5-RRC signaling.

[0232] As an embodiment, any second-type signaling among the N second-type signaling includes all or part of a MAC layer signaling.

[0233] As an embodiment, any two first-type signalings among the N second-type signalings include one or more fields in a MAC CE.

[0234] As an embodiment, any first-category signaling among the M first-category signalings includes a SL IE.

[0235] As an embodiment, the channel occupied by any second-type signaling among the N second-type signalings includes PSCCH.

[0236] As an embodiment, the channel occupied by any second-type signaling among the N second-type signalings includes PSSCH.

[0237] As an embodiment, any second type of signaling among the N second type of signaling indicates the time domain resources occupied by the first candidate time-frequency resource block.

[0238] As an embodiment, any second type of signaling among the N second type of signaling indicates the index of the time domain resource block occupied by the first candidate time-frequency resource block in the time domain among the multiple time domain resource blocks included in the second resource pool.

[0239] As an embodiment, any second type of signaling among the N second type of signaling indicates the frequency domain resources occupied by the first candidate time-frequency resource block.

[0240] As an embodiment, any second type of signaling among the N second type of signaling indicates the index of the frequency domain resource block occupied by the first candidate time-frequency resource block in the frequency domain among the multiple frequency domain resource blocks included in the second resource pool.

[0241] As an embodiment, any second type of signaling among the N second type of signaling indicates the time-frequency resources occupied by the first candidate time-frequency resource block.

[0242] As an embodiment, any second type of signaling among the N second type of signaling indicates the index of the first candidate time-frequency resource block in the multiple time-frequency resource blocks included in the second resource pool.

[0243] As an embodiment, the first candidate time-frequency resource block is indicated by any second type of signaling among the N second type of signaling.

[0244] As an embodiment, any second type of signaling among the N second type of signaling indicates a positive integer number of time-frequency resource blocks in the second resource pool, and the first candidate time-frequency resource block is a time-frequency resource block among the positive integer number of time-frequency resource blocks in the second resource pool indicated by any second type of signaling among the N second type of signaling.

[0245] As an embodiment, the N second-class signalings respectively indicate N second-class time-frequency resource block sets, any second-class time-frequency resource block set among the N second-class time-frequency resource block sets includes a positive integer number of time-frequency resource blocks in the second resource pool, and any second-class time-frequency resource block set among the N second-class time-frequency resource block sets includes the first alternative time-frequency resource block.

[0246] As an embodiment, the second signaling is any second type of signaling among the N second type of signaling, and the second time-frequency resource block set is a second type of time-frequency resource block set among the N second type of time-frequency resource block sets indicated by the second signaling.

[0247] As an embodiment, the second time-frequency resource block set includes a positive integer number of time-frequency resource blocks, any time-frequency resource block among the positive integer number of time-frequency resource blocks included in the second time-frequency resource block set is a time-frequency resource block in the second resource pool, and the first alternative time-frequency resource block is a time-frequency resource block among the positive integer number of time-frequency resource blocks included in the second time-frequency resource block set.

[0248] As an embodiment, the second time-frequency resource block set is obtained by the sender of the second signaling through channel perception.

[0249] As an embodiment, the second time-frequency resource block set is the time-frequency resources that the sender of the second signaling indicates to the first node to avoid using for sending.

[0250] As an embodiment, the second time-frequency resource block set is a time-frequency resource indicated by the sender of the second signaling to avoid being used for sending the first signal.

[0251] As an embodiment, the multi-carrier symbol in the present application is a SC-FDMA (Single-Carrier Frequency Division Multiple Access) symbol.

[0252] As an embodiment, the multi-carrier symbol in the present application is a DFT-S-OFDM (Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing) symbol.

[0253] As an embodiment, the multi-carrier symbol in the present application is a FDMA (Frequency Division Multiple Access) symbol.

[0254] As an embodiment, the multi-carrier symbol in the present application is a FBMC (Filter Bank Multi-Carrier) symbol.

[0255] As an embodiment, the multi-carrier symbol in the present application is an IFDMA (Interleaved Frequency Division Multiple Access) symbol.

[0256] Example 2

[0257] Embodiment 2 illustrates a schematic diagram of a network architecture according to the present application, as shown in the attached Figure 2 Attached Figure 2A diagram of a network architecture 200 of a 5G NR, LTE (Long-Term Evolution) and LTE-A (Long-Term Evolution Advanced) system is illustrated. The 5G NR or LTE network architecture 200 may be referred to as a 5GS (5G System) / EPS (Evolved Packet System) 200 or some other suitable terminology. The 5GS / EPS 200 may include one or more UEs (User Equipment) 201, a UE 241 communicating with the UE 201 via a sidelink, an NG-RAN (Next Generation Radio Access Network) 202, a 5GC (5G Core Network) / EPC (Evolved Packet Core) 210, an HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and an Internet service 230. The 5GS / EPS may be interconnected with other access networks, but these entities / interfaces are not shown for simplicity. As shown, 5GS / EPS provides packet switching services, however, those skilled in the art will readily appreciate that the various concepts presented throughout this application can be extended to networks providing circuit switching services or other cellular networks. NG-RAN includes NR Node B (gNB) 203 and other gNBs 204. gNB 203 provides user and control plane protocol terminations toward UE 201. gNB 203 can be connected to other gNBs 204 via an Xn interface (e.g., backhaul). gNB 203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a TRP (transmitting receiving node), or some other suitable term. In an NTN network, examples of gNB 203 include satellites, aircraft, or ground base stations relayed by satellites. gNB 203 provides an access point to 5GC / EPC 210 for UE 201. Examples of UE 201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop computer, a personal digital assistant (PDA), a satellite radio, non-terrestrial base station communications, satellite mobile communications, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., an MP3 player), a camera, a game console, a drone, an aircraft, a narrowband Internet of Things device, a machine type communication device, a land vehicle, an automobile, a wearable device, or any other similarly functional device.A person skilled in the art may also refer to UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable term. gNB203 is connected to 5GC / EPC210 via an S1 / NG interface. 5GC / EPC210 includes MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MME / AMF / SMF214, S-GW (Service Gateway) / UPF (User Plane Function) 212, and P-GW (Packet Data Network Gateway) / UPF213. MME / AMF / SMF211 is the control node that handles the signaling between UE201 and 5GC / EPC210. ​​In general, MME / AMF / SMF211 provides bearer and connection management. All user IP (Internet Protocal) packets are transmitted through S-GW / UPF212, which itself is connected to P-GW / UPF213. P-GW provides UE IP address allocation and other functions. P-GW / UPF213 is connected to Internet services 230. Internet services 230 include operator-corresponding Internet protocol services, which may specifically include Internet, intranet, IMS (IP Multimedia Subsystem) and packet switching streaming services.

[0258] As an embodiment, the first node in the present application includes the UE201.

[0259] As an embodiment, the second node in the present application includes the UE241.

[0260] As an embodiment, the third node in the present application includes the UE241.

[0261] As an embodiment, the user equipment in the present application includes the UE201.

[0262] As an embodiment, the user equipment in the present application includes the UE241.

[0263] As an embodiment, the base station device in the present application includes the gNB203.

[0264] As an embodiment, the receiver of any first-category signaling among the M first-category signalings in the present application includes the UE201.

[0265] As an embodiment, the receiver of any second-type signaling among the N second-type signaling in the present application includes the UE201.

[0266] As an embodiment, the sender of any first-category signaling among the M first-category signalings in the present application includes the UE241.

[0267] As an embodiment, the sender of any second-type signaling among the N second-type signaling in the present application includes the UE241.

[0268] As an embodiment, the sender of the first target signaling in the present application includes the UE201.

[0269] As an embodiment, the recipient of the first target signaling in the present application includes the UE241.

[0270] As an embodiment, the sender of the first signal in the present application includes the UE201.

[0271] As an embodiment, the receiver of the first signal in the present application includes the UE241.

[0272] Example 3

[0273] Embodiment 3 shows a schematic diagram of an embodiment of a wireless protocol architecture of a user plane and a control plane according to the present application, as shown in the attached Figure 3 shown. Figure 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, Figure 3The radio protocol architecture of the control plane 300 for a first node device (a UE or RSU in V2X, a vehicle-mounted device or a vehicle-mounted communication module) and a second node device (gNB, a UE or RSU in V2X, a vehicle-mounted device or a vehicle-mounted communication module), or between two UEs is shown in three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to as PHY301 in this article. Layer 2 (L2 layer) 305 is above PHY301 and is responsible for the link between the first node device and the second node device and the two UEs through PHY301. The L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second node device. The PDCP sublayer 304 provides data encryption and integrity protection. The PDCP sublayer 304 also provides inter-zone mobility support for the first node device to the second node device. The RLC sublayer 303 provides segmentation and reorganization of data packets, and retransmission of lost data packets through ARQ. The RLC sublayer 303 also provides duplicate data packet detection and protocol error detection. The MAC sublayer 302 provides mapping between logical and transport channels and multiplexing of logical channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in a cell between the first node devices. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in layer 3 (L3 layer) in the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and using RRC signaling between the second node device and the first node device to configure the lower layer. The radio protocol architecture of the user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer). The radio protocol architecture for the first node device and the second node device in the user plane 350 is substantially the same as the corresponding layers and sublayers in the control plane 300 for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355, but the PDCP sublayer 354 also provides header compression for upper layer data packets to reduce wireless transmission overhead. The L2 layer 355 in the user plane 350 also includes a SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping between QoS flows and data radio bearers (DRBs) to support the diversity of services.Although not shown, the first node device may have several upper layers above the L2 layer 355, including a network layer (e.g., an IP layer) terminated at the P-GW on the network side and an application layer terminated at the other end of the connection (e.g., a remote UE, a server, etc.).

[0274] As an example, Figure 3 The wireless protocol architecture in is applicable to the first node in this application.

[0275] As an example, Figure 3 The wireless protocol architecture in is applicable to the second node in this application.

[0276] As an example, Figure 3 The wireless protocol architecture in is applicable to the third node in this application.

[0277] As an embodiment, any first-category signaling among the M first-category signalings in the present application is generated in the PHY301.

[0278] As an embodiment, any first-category signaling among the M first-category signalings in the present application is generated in the RRC sublayer 306.

[0279] As an embodiment, any first-category signaling among the M first-category signaling in the present application is transmitted to the PHY301 via the MAC sublayer 302 .

[0280] As an embodiment, any second-type signaling among the N second-type signaling in the present application is generated in the PHY301.

[0281] As an embodiment, any second-type signaling among the N second-type signaling in the present application is generated in the RRC sublayer 306.

[0282] As an embodiment, any second-type signaling among the N second-type signaling in the present application is transmitted to the PHY301 via the MAC sublayer 302 .

[0283] As an embodiment, the first target signaling in the present application is generated in the PHY301.

[0284] As an embodiment, the first signal in the present application is generated in the RRC sublayer 306.

[0285] As an embodiment, the first signal in the present application is transmitted to the PHY301 via the MAC sublayer 302 .

[0286] Example 4

[0287] Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to the present application, as shown in the attached figure. Figure 4 shown. Figure 4 is a block diagram of a first communication device 410 and a second communication device 450 communicating with each other in an access network.

[0288] The first communication device 410 includes a controller / processor 475 , a memory 476 , a receive processor 470 , a transmit processor 416 , a multi-antenna receive processor 472 , a multi-antenna transmit processor 471 , a transmitter / receiver 418 and an antenna 420 .

[0289] The second communication device 450 includes a controller / processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter / receiver 454 and an antenna 452.

[0290] In transmission from the first communication device 410 to the second communication device 450, at the first communication device 410, upper layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements the functionality of the L2 layer. In transmission from the first communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the second communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmission of lost packets and signaling to the second communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate forward error correction (FEC) at the second communication device 450, as well as mapping of signal constellations based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing on the coded and modulated symbols to generate one or more spatial streams. The transmit processor 416 then maps each spatial stream to a subcarrier, multiplexes with a reference signal (e.g., a pilot) in the time domain and / or frequency domain, and then uses an inverse fast Fourier transform (IFFT) to generate a physical channel carrying a time-domain multi-carrier symbol stream. The multi-antenna transmit processor 471 then performs a transmit analog precoding / beamforming operation on the time-domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream, and then provides it to a different antenna 420.

[0291] In the transmission from the first communication device 410 to the second communication device 450, at the second communication device 450, each receiver 454 receives a signal through its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the RF carrier and converts the RF stream into a baseband multi-carrier symbol stream and provides it to the receiving processor 456. The receiving processor 456 and the multi-antenna receiving processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiving processor 458 performs a receiving analog precoding / beamforming operation on the baseband multi-carrier symbol stream from the receiver 454. The receiving processor 456 uses a fast Fourier transform (FFT) to convert the baseband multi-carrier symbol stream after the receiving analog precoding / beamforming operation from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receiving processor 456, wherein the reference signal will be used for channel estimation, and the data signal is recovered after multi-antenna detection in the multi-antenna receiving processor 458 to any spatial stream destined for the second communication device 450. The symbols on each spatial stream are demodulated and recovered in the receiving processor 456, and soft decisions are generated. The receiving processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the first communication device 410 on the physical channel. The upper layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of the L2 layer. The controller / processor 459 may be associated with a memory 460 that stores program codes and data. The memory 460 may be referred to as a computer-readable medium. In the transmission from the first communication device 410 to the second communication device 450, the controller / processor 459 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover the upper layer data packets from the core network. The upper layer data packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.

[0292] In the transmission from the second communication device 450 to the first communication device 410, at the second communication device 450, a data source 467 is used to provide upper layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission function at the first communication device 410 described in the transmission from the first communication device 410 to the second communication device 450, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, and implements L2 layer functions for user plane and control plane. The controller / processor 459 is also responsible for the retransmission of lost packets and signaling to the first communication device 410. The transmit processor 468 performs modulation mapping and channel coding processing, and the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing. Then, the transmit processor 468 modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream, which is then provided to different antennas 452 via the transmitter 454 after analog precoding / beamforming operations in the multi-antenna transmit processor 457. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream, and then provides it to the antenna 452.

[0293] In the transmission from the second communication device 450 to the first communication device 410, the function at the first communication device 410 is similar to the reception function at the second communication device 450 described in the transmission from the first communication device 410 to the second communication device 450. Each receiver 418 receives a radio frequency signal through its corresponding antenna 420, converts the received radio frequency signal into a baseband signal, and provides the baseband signal to the multi-antenna reception processor 472 and the reception processor 470. The reception processor 470 and the multi-antenna reception processor 472 jointly implement the functions of the L1 layer. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 can be associated with a memory 476 storing program codes and data. The memory 476 can be referred to as a computer-readable medium. In the transmission from the second communication device 450 to the first communication device 410, the controller / processor 475 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover the upper layer data packets from the UE 450. Upper layer packets from controller / processor 475 may be provided to the core network.

[0294] As an embodiment, the first node in the present application includes the second communication device 450 , and the second node in the present application includes the first communication device 410 .

[0295] As an embodiment, the first node in the present application includes the second communication device 450 , and the third node in the present application includes the first communication device 410 .

[0296] As an embodiment, the first node in the present application includes the second communication device 450 , the second node in the present application includes the first communication device 410 , and the third node in the present application includes the first communication device 410 .

[0297] As a sub-embodiment of the above embodiment, the first node is a user equipment, and the second node is a user equipment.

[0298] As a sub-embodiment of the above embodiment, the first node is a user equipment, and the third node is a user equipment.

[0299] As a sub-embodiment of the above embodiment, the first node is a user equipment, the second node is a user equipment, and the third node is a user equipment.

[0300] As a sub-embodiment of the above embodiment, the first node is a user equipment, the second node is a user equipment, and the third node is a relay node.

[0301] As a sub-embodiment of the above embodiment, the first node is a user equipment, the second node is a relay node, and the third node is a base station device.

[0302] As a sub-embodiment of the above embodiment, the second communication device 450 includes: at least one controller / processor; the at least one controller / processor is responsible for HARQ operation.

[0303] As a sub-embodiment of the above embodiment, the first communication device 410 includes: at least one controller / processor; the at least one controller / processor is responsible for HARQ operation.

[0304] As a sub-embodiment of the above embodiment, the first communication device 410 includes: at least one controller / processor; the at least one controller / processor is responsible for error detection using positive acknowledgement (ACK) and / or negative acknowledgement (NACK) protocols to support HARQ operations.

[0305] As an embodiment, the second communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The second communication device 450 device at least: performs a first channel sensing; receives M first-class signaling and N second-class signaling, M and N are both positive integers; sends a first signal on a target time-frequency resource block; the first channel sensing is used to determine a target resource pool, the target resource pool includes multiple time-frequency resource blocks; the first candidate time-frequency resource block is a time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool; the target time-frequency resource block belongs to a target resource subset, the target resource subset includes a positive integer number of time-frequency resource blocks, and any time-frequency resource block included in the target resource subset belongs to the target resource pool; any first-class signaling among the M first-class signaling indicates the first candidate time-frequency resource block; any second-class signaling among the N second-class signaling indicates the first candidate time-frequency resource block, and any first-class signaling among the M first-class signaling is different from any second-class signaling among the N second-class signaling; the M and the N are used together to determine whether the first candidate time-frequency resource block belongs to the target resource subset.

[0306] As an embodiment, the second communication device 450 includes: a memory storing a computer-readable instruction program, wherein the computer-readable instruction program generates actions when executed by at least one processor, wherein the actions include: performing first channel sensing; receiving M first-type signaling and N second-type signaling, where M and N are both positive integers; sending a first signal on a target time-frequency resource block; the first channel sensing is used to determine a target resource pool, wherein the target resource pool includes a plurality of time-frequency resource blocks; the first candidate time-frequency resource block is one of the plurality of time-frequency resource blocks included in the target resource pool; the target time-frequency resource block is a plurality of time-frequency resource blocks included in the target resource pool; The source block belongs to a target resource subset, the target resource subset includes a positive integer number of time-frequency resource blocks, and any time-frequency resource block included in the target resource subset belongs to the target resource pool; any first-class signaling among the M first-class signalings indicates the first alternative time-frequency resource block; any second-class signaling among the N second-class signalings indicates the first alternative time-frequency resource block, and any first-class signaling among the M first-class signalings is different from any second-class signaling among the N second-class signalings; the M and the N are used together to determine whether the first alternative time-frequency resource block belongs to the target resource subset.

[0307] As an embodiment, the first communication device 410 includes: at least one processor and at least one memory, the at least one memory includes computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor. The first communication device 410 device at least: sends a first type of signaling; receives a first target signaling and a first signal on a target time-frequency resource block; the first type of signaling is used to indicate a first candidate time-frequency resource block; the target resource pool includes multiple time-frequency resource blocks; the first candidate time-frequency resource block is one of the multiple time-frequency resource blocks included in the target resource pool; the target time-frequency resource block belongs to a target resource subset, the target resource subset includes a positive integer number of time-frequency resource blocks, and any time-frequency resource block included in the target resource subset belongs to the target resource pool; the receiver of the first type of signaling is used to determine whether the first candidate time-frequency resource block belongs to the target resource subset; the first target signaling indicates the target time-frequency resource block.

[0308] As an embodiment, the first communication device 410 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generates actions when executed by at least one processor, the actions including: sending a first type of signaling; receiving a first target signaling and a first signal on a target time-frequency resource block; the first type of signaling is used to indicate a first alternative time-frequency resource block; the target resource pool includes multiple time-frequency resource blocks; the first alternative time-frequency resource block is one of the multiple time-frequency resource blocks included in the target resource pool; the target time-frequency resource block belongs to a target resource subset, the target resource subset includes a positive integer number of time-frequency resource blocks, and any time-frequency resource block included in the target resource subset belongs to the target resource pool; the receiver of the first type of signaling is used to determine whether the first alternative time-frequency resource block belongs to the target resource subset; the first target signaling indicates the target time-frequency resource block.

[0309] As an embodiment, the first communication device 410 includes: at least one processor and at least one memory, the at least one memory includes computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor. The first communication device 410 device at least: sends a second type of signaling; receives a first target signaling and a first signal on a target time-frequency resource block; the second type of signaling is used to indicate a first candidate time-frequency resource block; the target resource pool includes multiple time-frequency resource blocks; the first candidate time-frequency resource block is a time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool; the target time-frequency resource block belongs to a target resource subset, the target resource subset includes a positive integer number of time-frequency resource blocks, and any time-frequency resource block included in the target resource subset belongs to the target resource pool; the receiver of the second type of signaling is used to determine whether the first candidate time-frequency resource block belongs to the target resource subset; the first target signaling indicates the target time-frequency resource block.

[0310] As an embodiment, the first communication device 410 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generates actions when executed by at least one processor, the actions including: sending a second type of signaling; receiving a first target signaling and a first signal on a target time-frequency resource block; the second type of signaling is used to indicate a first alternative time-frequency resource block; the target resource pool includes multiple time-frequency resource blocks; the first alternative time-frequency resource block is one of the multiple time-frequency resource blocks included in the target resource pool; the target time-frequency resource block belongs to a target resource subset, the target resource subset includes a positive integer number of time-frequency resource blocks, and any time-frequency resource block included in the target resource subset belongs to the target resource pool; the receiver of the second type of signaling is used to determine whether the first alternative time-frequency resource block belongs to the target resource subset; the first target signaling indicates the target time-frequency resource block.

[0311] As an embodiment, at least one of {the antenna 452, the receiver 454, the multi-antenna receiving processor 458, the receiving processor 456, the controller / processor 459, the memory 460, and the data source 467} is used to perform the first channel sensing in the present application.

[0312] As an embodiment, at least one of {the antenna 452, the receiver 454, the multi-antenna receiving processor 458, the receiving processor 456, the controller / processor 459, the memory 460, and the data source 467} is used to receive M first-class signaling and N second-class signaling in the present application.

[0313] As an embodiment, at least one of {the antenna 452, the transmitter 454, the multi-antenna transmit processor 458, the transmit processor 468, the controller / processor 459, the memory 460, and the data source 467} is used to send the first target signaling on the target time-frequency resource block in the present application.

[0314] As an embodiment, at least one of {the antenna 452, the transmitter 454, the multi-antenna transmit processor 458, the transmit processor 468, the controller / processor 459, the memory 460, the data source 467} is used to send a first signal on a target time-frequency resource block in the present application.

[0315] As an embodiment, at least one of {the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller / processor 475, and the memory 476} is used to send a first type of signaling in the present application.

[0316] As an embodiment, at least one of {the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller / processor 475, and the memory 476} is used to send a second type of signaling in the present application.

[0317] As an embodiment, at least one of {the antenna 420, the receiver 418, the multi-antenna receiving processor 472, the receiving processor 470, the controller / processor 475, and the memory 476} is used to receive the first target signaling on the target time-frequency resource block in the present application.

[0318] As an embodiment, at least one of {the antenna 420, the receiver 418, the multi-antenna receiving processor 472, the receiving processor 470, the controller / processor 475, and the memory 476} is used to receive the first signal on the target time-frequency resource block in the present application.

[0319] Example 5

[0320] Embodiment 5 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in the attached Figure 5 As shown in the attached Figure 5 In the embodiment, the first node U1, the second node U2 and the third node U3 communicate with each other through the air interface. Figure 5 The steps in box F0 in are optional.

[0321] for The first node U1, performing first channel sensing in step S11; receiving M first-type signaling and N second-type signaling in step S12; sending a first target signaling on a target time-frequency resource block in step S13; and sending a first signal on a target time-frequency resource block in step S14.

[0322] for The second node U2 , in step S21, a first type of signaling is sent; in step S22, a first target signaling is received on a target time-frequency resource block; in step S23, a first signal is received on a target time-frequency resource block.

[0323] for The third node U3 , in step S31, a second type of signaling is sent; in step S32, a first target signaling is received on the target time-frequency resource block; in step S33, a first signal is received on the target time-frequency resource block.

[0324] In embodiment 5, the first channel sensing is used to determine a target resource pool, the target resource pool includes multiple time-frequency resource blocks; the first candidate time-frequency resource block is a time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool; the target time-frequency resource block belongs to a target resource subset, the target resource subset includes a positive integer number of time-frequency resource blocks, and any time-frequency resource block included in the target resource subset belongs to the target resource pool; any first-class signaling among the M first-class signalings indicates the first candidate time-frequency resource block; any second-class signaling among the N second-class signalings indicates the first candidate time-frequency resource block, and any first-class signaling among the M first-class signalings and any second-class signaling among the N second-class signalings are not the same; senders of any two first-class signalings among the M first-class signalings are not co-located; the N The senders of any two second-type signalings in the second-type signaling are not co-located; the M and the N are used together to determine whether the first alternative time-frequency resource block belongs to the target resource subset; the first channel sensing is performed in a first resource pool, and the first resource pool includes multiple time-frequency resource blocks; any time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool is associated with a time-frequency resource block in the first resource pool; the first alternative time-frequency resource block is associated with a first time-frequency resource block, and the first time-frequency resource block is one of the multiple time-frequency resource blocks included in the first resource pool; the measurement value of the first time-frequency resource block is not higher than a first threshold; the first target signaling is used to indicate the target time-frequency resource block; the first target signaling includes a first priority, and the first priority is used to determine the first threshold.

[0325] As an embodiment, the first signaling is any first-category signaling among the M first-category signalings; the second signaling is any second-category signaling among the N second-category signalings; and the first signaling is different from the second signaling.

[0326] As an embodiment, the size relationship between M and the first numerical value, and the size relationship between N and the second numerical value are used together to determine whether the first alternative time-frequency resource block belongs to the target resource subset; the first numerical value is predefined, or the first numerical value is configurable; the second numerical value is predefined, or the second numerical value is configurable.

[0327] As an embodiment, the relationship between the M and the N is used to determine whether the first candidate time-frequency resource block belongs to the target resource subset.

[0328] As an embodiment, the first node U1 and the second node U2 communicate with each other through a PC5 interface.

[0329] As an embodiment, the first node U1 and the third node U3 communicate with each other through a PC5 interface.

[0330] As an example, Figure 5 The steps in box F0 in exist.

[0331] As an example, Figure 5 The step in box F0 does not exist.

[0332] As an embodiment, the second type of signaling sent by the third node U3 does not indicate the target time-frequency resource block. Figure 5 The steps in box F0 in exist.

[0333] As an embodiment, the second type of signaling sent by the third node U3 indicates the target time-frequency resource block, Figure 5 The step in box F0 does not exist.

[0334] As an embodiment, the second type of signaling sent by the third node U3 indicates the target time-frequency resource block, the target time-frequency resource block is associated with a time-frequency resource block in the first resource pool, and the measurement value of the third node U3 for a time-frequency resource block associated with the target time-frequency resource block in the first resource pool is higher than the first target threshold, and the Figure 5 The step in box F0 does not exist.

[0335] As an embodiment, the second type of signaling sent by the third node U3 indicates the target time-frequency resource block, the target time-frequency resource block is associated with a time-frequency resource block in the first resource pool, and the third node U3 does not monitor a time-frequency resource block associated with the target time-frequency resource block in the first resource pool, Figure 5 The step in box F0 does not exist.

[0336] As an embodiment, the first signaling is any first-category signaling among the M first-category signalings.

[0337] As an embodiment, the second signaling is any second-category signaling among the N second-category signalings.

[0338] As an embodiment, a sender of a first-type signaling among the M first-type signaling and a sender of a second-type signaling among the N second-type signaling are not co-located.

[0339] As an embodiment, a sender of a first type of signaling among the M first type of signaling and a sender of a second type of signaling among the N second type of signaling are two different communication nodes respectively.

[0340] As an embodiment, a sender of one first-type signaling among the M first-type signalings is the second node U2, and a sender of one second-type signaling among the N second-type signalings is the third node U3.

[0341] As an embodiment, a sender of a first-type signaling among the M first-type signaling and a sender of a second-type signaling among the N second-type signaling are two different user equipments.

[0342] As an embodiment, a backhaul link between a sender of a first-type signaling among the M first-type signaling and a sender of a second-type signaling among the N second-type signaling is non-ideal (ie, the delay cannot be ignored).

[0343] As an embodiment, a sender of a first-type signaling among the M first-type signaling and a sender of a second-type signaling among the N second-type signaling do not share the same baseband device.

[0344] As an embodiment, a sender of at least one first-type signaling among the M first-type signaling and a sender of at least one second-type signaling among the N second-type signaling are co-located.

[0345] As an embodiment, a sender of at least one first-type signaling among the M first-type signaling and a sender of at least one second-type signaling among the N second-type signaling are two different communication nodes, respectively.

[0346] As an embodiment, the sender of at least one first-type signaling among the M first-type signaling is the second node U2, and the sender of at least one second-type signaling among the N second-type signaling is the third node U3.

[0347] As an embodiment, a sender of at least one first-type signaling among the M first-type signaling and a sender of at least one second-type signaling among the N second-type signaling are two different user equipments, respectively.

[0348] As an embodiment, the backhaul link between the sender of at least one first-type signaling among the M first-type signaling and the sender of at least one second-type signaling among the N second-type signaling is non-ideal (ie, the delay cannot be ignored).

[0349] As an embodiment, a sender of at least one first-type signaling among the M first-type signaling and a sender of at least one second-type signaling among the N second-type signaling do not share the same baseband device.

[0350] As an embodiment, the first signaling is a first-category signaling among the M first-category signalings, and the second signaling is a second-category signaling among the N second-category signalings; a sender of the first signaling and a sender of the second signaling are not co-located.

[0351] As an embodiment, the sender of the first signaling and the sender of the second signaling are two different communication nodes respectively.

[0352] As an embodiment, the sender of the first signaling is the second node U2, and the sender of the second signaling is the third node U3.

[0353] As an embodiment, the sender of the first signaling and the sender of the second signaling are two different user equipments.

[0354] As an embodiment, the backhaul link between the sender of the first signaling and the sender of the second signaling is non-ideal (ie, the delay cannot be ignored).

[0355] As an embodiment, the sender of the first signaling and the sender of the second signaling do not share the same baseband device.

[0356] As an embodiment, the first signaling carries a first identifier, and the second signaling carries a second identifier, the first identifier is used to identify the sender of the first signaling, and the second identifier is used to identify the sender of the second signaling.

[0357] As an embodiment, the first signaling includes multiple domains, and the first identifier is one of the multiple domains included in the first signaling.

[0358] As an embodiment, the second signaling includes multiple fields, and the second identifier is one of the multiple fields included in the second signaling.

[0359] As an embodiment, the first identifier is used to scramble the first signaling.

[0360] As an embodiment, the second identifier is used to scramble the second signaling.

[0361] As an embodiment, the first signaling includes multiple domains, the first identifier is one of the multiple domains included in the first signaling; and the second identifier is used to scramble the second signaling.

[0362] As an embodiment, the first identifier is used to scramble the first signaling; the second signaling includes multiple domains, and the second identifier is one of the multiple domains included in the second signaling.

[0363] As an embodiment, the first identifier and the second identifier are respectively two first-category identifiers among X1 first-category identifiers, where X1 is a positive integer greater than 1.

[0364] As an embodiment, the M first-category signalings respectively carry M first-category identifiers among X1 first-category identifiers, and M is a positive integer not greater than X1.

[0365] As an embodiment, any first-category identifier among the M first-category identifiers is used to identify a sender of a first-category signaling among the M first-category signalings.

[0366] As an embodiment, the N second-class signalings respectively carry N first-class identifiers among X1 first-class identifiers, where N is a positive integer not greater than X1.

[0367] As an embodiment, any first-type identifier among the N first-type identifiers is used to identify the sender of a second-type signaling among the N second-type signalings.

[0368] As an embodiment, the number of bits included in any first-category identifier among the X1 first-category identifiers is configurable.

[0369] As an embodiment, any first-category identifier among the X1 first-category identifiers includes 16 bits.

[0370] As an embodiment, any first-category identifier among the X1 first-category identifiers includes 8 bits.

[0371] As an embodiment, X1 is equal to 2 raised to the 16th power.

[0372] As an embodiment, X1 is equal to 2 to the 8th power.

[0373] As an embodiment, the first identifier includes 16 bits, and the second identifier includes 16 bits.

[0374] As an embodiment, the first identifier includes 8 bits, and the second identifier includes 8 bits.

[0375] As an embodiment, any first-category identifier among the X1 first-category identifiers includes a source identifier (SourceID, Source Identity).

[0376] As an embodiment, any first-category identifier among the X1 first-category identifiers includes a layer 1 source identifier (Layer-1 source ID).

[0377] As an embodiment, any first-category identifier among the X1 first-category identifiers includes an SL source identifier (Sidelink source ID).

[0378] As an embodiment, any of the X1 first-category identifiers includes a RNTI (Radio Network Temporary Identifier).

[0379] As an embodiment, any of the X1 first-category identifiers includes a C-RNTI (Cell-Radio Network Temporary Identifier).

[0380] As an embodiment, any of the X1 first-category identifiers includes a TC-RNTI (Temporary Cell-Radio Network Temporary Identifier).

[0381] As an embodiment, any first-category identifier among the X1 first-category identifiers includes an IMSI (International Mobile Subscriber Identifier).

[0382] As an embodiment, the first signaling is a first-category signaling among the M first-category signalings, and the second signaling is a second-category signaling among the N second-category signalings; and the sender of the first signaling and the sender of the second signaling are co-located.

[0383] As an embodiment, the sender of the first signaling and the sender of the second signaling are the same communication node.

[0384] As an embodiment, the sender of the first signaling and the sender of the second signaling are both the second node U2.

[0385] As an embodiment, the sender of the first signaling and the sender of the second signaling are the same user equipment.

[0386] As an embodiment, the backhaul link between the sender of the first signaling and the sender of the second signaling is ideal (ie, the delay can be ignored).

[0387] As an embodiment, the sender of the first signaling and the sender of the second signaling share the same baseband device.

[0388] As an embodiment, the first signaling carries a first identifier, and the second signaling also carries a first identifier, the first identifier is used to identify the sender of the first signaling, and the first identifier is also used to identify the sender of the second signaling.

[0389] As an embodiment, the first signaling includes multiple domains, and the first identifier is one of the multiple domains included in the first signaling; the second signaling includes multiple domains, and the first identifier is one of the multiple domains included in the second signaling.

[0390] As an embodiment, the first identifier is used to scramble the first signaling; the first identifier is used to scramble the second signaling.

[0391] As an embodiment, the first identifier is a first-category identifier among X1 first-category identifiers, where X1 is a positive integer greater than 1.

[0392] As an embodiment, senders of any two first-category signalings among the M first-category signalings are not co-located.

[0393] As an embodiment, senders of any two first-type signalings among the M first-type signalings are two different communication nodes.

[0394] As an embodiment, senders of any two first-type signalings among the M first-type signalings are respectively the second node U2 and another communication node different from the second node U2.

[0395] As an embodiment, senders of any two first-category signalings among the M first-category signalings are two different user equipments.

[0396] As an embodiment, the backhaul link between senders of any two first-type signalings among the M first-type signalings is non-ideal (ie, the delay cannot be ignored).

[0397] As an embodiment, senders of any two first-type signalings among the M first-type signalings do not share the same baseband device.

[0398] As an embodiment, senders of any two second-type signaling messages among the N second-type signaling messages are not co-located.

[0399] As an embodiment, senders of any two second-type signalings among the N second-type signalings are two different communication nodes.

[0400] As an embodiment, senders of any two second-type signalings among the N second-type signalings are respectively the third node U3 and another communication node different from the third node U3.

[0401] As an embodiment, senders of any two second-type signalings among the N second-type signalings are two different user equipments.

[0402] As an embodiment, the backhaul link between senders of any two second-type signalings among the N second-type signalings is non-ideal (ie, the delay cannot be ignored).

[0403] As an embodiment, senders of any two second-type signalings among the N second-type signalings do not share the same baseband device.

[0404] As an embodiment, the third signaling is a first-category signaling among the M first-category signalings that is different from the first signaling, and a sender of the first signaling and a sender of the third signaling are not co-located.

[0405] As an embodiment, the first signaling and the third signaling are any two different first-category signalings among the M first-category signalings, and the sender of the first signaling and the sender of the third signaling are not co-located.

[0406] As an embodiment, the sender of the first signaling and the sender of the third signaling are two different communication nodes respectively.

[0407] As an embodiment, the sender of the first signaling is the second node U2, and the sender of the third signaling is a communication node different from the second node U2.

[0408] As an embodiment, the sender of the first signaling and the sender of the third signaling are two different user equipments.

[0409] As an embodiment, the backhaul link between the sender of the first signaling and the sender of the third signaling is non-ideal (ie, the delay cannot be ignored).

[0410] As an embodiment, the sender of the first signaling and the sender of the third signaling do not share the same baseband device.

[0411] As an embodiment, the first signaling carries a first identifier, the third signaling carries a third identifier, the first identifier is used to identify the sender of the first signaling, and the third identifier is used to identify the sender of the third signaling.

[0412] As an embodiment, the first signaling includes multiple domains, and the first identifier is one of the multiple domains included in the first signaling; the third signaling includes multiple domains, and the third identifier is one of the multiple domains included in the third signaling.

[0413] As an embodiment, the first identifier is used to scramble the first signaling; and the third identifier is used to scramble the third signaling.

[0414] As an embodiment, the first signaling includes multiple domains, the first identifier is one of the multiple domains included in the first signaling; and the third identifier is used to scramble the third signaling.

[0415] As an embodiment, the first identifier is used to scramble the first signaling; the third signaling includes multiple domains, and the third identifier is one of the multiple domains included in the third signaling.

[0416] As an embodiment, the first identifier and the third identifier are respectively two first-category identifiers among X1 first-category identifiers, where X1 is a positive integer greater than 1.

[0417] As an embodiment, the first identifier includes 16 bits, and the third identifier includes 16 bits.

[0418] As an embodiment, the first identifier includes 8 bits, and the third identifier includes 8 bits.

[0419] As an embodiment, the fourth signaling is a second-type signaling different from the second signaling among the N second-type signalings, and a sender of the second signaling and a sender of the fourth signaling are not co-located.

[0420] As an embodiment, the second signaling and the fourth signaling are any two different second-type signalings among the N second-type signalings, and the sender of the second signaling and the sender of the fourth signaling are not co-located.

[0421] As an embodiment, the sender of the second signaling and the sender of the fourth signaling are two different communication nodes respectively.

[0422] As an embodiment, the sender of the second signaling is the third node U3, and the sender of the fourth signaling is a communication node different from the third node U3.

[0423] As an embodiment, the sender of the second signaling and the sender of the fourth signaling are two different user equipments.

[0424] As an embodiment, the backhaul link between the sender of the second signaling and the sender of the fourth signaling is non-ideal (ie, the delay cannot be ignored).

[0425] As an embodiment, the sender of the second signaling and the sender of the fourth signaling do not share the same baseband device.

[0426] As an embodiment, the second signaling carries a second identifier, the fourth signaling carries a fourth identifier, the second identifier is used to identify the sender of the second signaling, and the fourth identifier is used to identify the sender of the fourth signaling.

[0427] As an embodiment, the second signaling includes multiple domains, and the second identifier is one of the multiple domains included in the second signaling; the fourth signaling includes multiple domains, and the fourth identifier is one of the multiple domains included in the fourth signaling.

[0428] As an embodiment, the second identifier is used to scramble the second signaling; and the fourth identifier is used to scramble the fourth signaling.

[0429] As an embodiment, the second signaling includes multiple domains, the second identifier is one of the multiple domains included in the second signaling; and the fourth identifier is used to scramble the fourth signaling.

[0430] As an embodiment, the second identifier is used to scramble the second signaling; the fourth signaling includes multiple domains, and the fourth identifier is one of the multiple domains included in the fourth signaling.

[0431] As an embodiment, the second identifier and the fourth identifier are respectively two first-category identifiers among X1 first-category identifiers, where X1 is a positive integer greater than 1.

[0432] As an embodiment, the second identifier includes 16 bits, and the fourth identifier includes 16 bits.

[0433] As an embodiment, the second identifier includes 8 bits, and the fourth identifier includes 8 bits.

[0434] Example 6

[0435] Embodiment 6 illustrates a schematic diagram of the relationship between the first resource pool, the first time domain resource block, the target resource pool, and the first candidate time-frequency resource block according to an embodiment of the present application, as shown in the attached figure. Figure 6 As shown in the attached Figure 6 In the figure, the large dotted square box represents the second resource pool in this application; the dotted square box represents the first resource pool in this application; the rectangle in the dotted square box represents the time-frequency resource block in the first resource pool; the rectangle filled with diagonal lines represents the first time-frequency resource block in this application; the thick solid line box represents the target resource pool in this application; the rectangle filled with diagonal squares represents the first alternative time-frequency resource block in this application.

[0436] In embodiment 6, the second resource pool is used to determine the first resource pool, and the first channel sensing is performed in the first resource pool; the first resource pool includes multiple time-frequency resource blocks; any time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool is associated with a time-frequency resource block in the first resource pool; the first time-frequency resource block is one of the multiple time-frequency resource blocks included in the first resource pool, and the first alternative time-frequency resource block is associated with the first time-frequency resource block; the measurement value of the first time-frequency resource block is not higher than a first threshold; the first signal is used to determine a first priority, and the first priority is used to determine the first threshold; the first target signaling carries the first priority.

[0437] As an embodiment, the first target signaling includes one or more fields in a PHY layer signaling.

[0438] As an embodiment, the first target signaling includes one or more fields in an SCI.

[0439] As an embodiment, the first target signaling is an SCI.

[0440] As an embodiment, the first target signaling includes at least one of multiple fields in the first-level SCI format and at least one of multiple fields in the second-level SCI format.

[0441] As an embodiment, the first target signaling includes all or part of a higher layer signaling.

[0442] As an embodiment, the first target signaling includes all or part of an RRC layer signaling.

[0443] As an embodiment, the first target signaling includes all or part of a PC5-RRC signaling.

[0444] As an embodiment, the first target signaling includes all or part of a MAC layer signaling.

[0445] As an embodiment, the first target signaling is transmitted on PSCCH.

[0446] As an embodiment, the first target signaling is transmitted on PSCCH and PSSCH.

[0447] As an embodiment, the first target signaling indicates the target time-frequency resource block.

[0448] As an embodiment, the first target signaling indicates the time domain resources occupied by the target time-frequency resource block.

[0449] As an embodiment, the first target signaling indicates the frequency domain resources occupied by the target time-frequency resource block.

[0450] As an embodiment, the first target signaling indicates the time-frequency resources occupied by the target time-frequency resource block.

[0451] As an embodiment, the first target signaling indicates the multiple REs included in the target time-frequency resource block.

[0452] As an embodiment, the first target signaling indicates that the target time-frequency resource block occupies a positive integer number of time domain resource blocks in the first resource pool.

[0453] As an embodiment, the first target signaling indicates that the target time-frequency resource block occupies a positive integer number of frequency domain resource blocks in the first resource pool.

[0454] As an embodiment, the first target signaling indicates that the target time-frequency resource block occupies a positive integer number of time-frequency resource blocks in the first resource pool.

[0455] As an embodiment, the second resource pool is used to determine the first resource pool.

[0456] As an embodiment, the first resource pool includes multiple time-frequency resource blocks in the second resource pool within a first perception window.

[0457] As an embodiment, the first perception window includes multiple time domain resource blocks in the second resource pool.

[0458] As an embodiment, the unit of the first perception window is ms (milliseconds).

[0459] As an embodiment, the first perception window is 10ms.

[0460] As an embodiment, the first perception window is 1000ms.

[0461] As an embodiment, the first resource pool includes multiple REs.

[0462] As an embodiment, the first resource pool includes multiple time domain resource blocks in the time domain.

[0463] As an embodiment, the first resource pool includes multiple frequency domain resource blocks in the frequency domain.

[0464] As an embodiment, the first resource pool includes multiple time domain resource blocks in the time domain, and the first resource pool includes multiple frequency domain resource blocks in the frequency domain.

[0465] As an embodiment, the first resource pool includes multiple time-frequency resource blocks.

[0466] As an embodiment, the second resource pool includes the first resource pool.

[0467] As an embodiment, any time domain resource block among the multiple time domain resource blocks included in the time domain by the first resource pool is a time domain resource block among the multiple time domain resource blocks included in the time domain by the second resource pool.

[0468] As an embodiment, any frequency domain resource block among the multiple frequency domain resource blocks included in the frequency domain by the first resource pool is a frequency domain resource block among the multiple frequency domain resource blocks included in the frequency domain by the second resource pool.

[0469] As an embodiment, any time-frequency resource block among the multiple time-frequency resource blocks included in the first resource pool is a time-frequency resource block among the multiple time-frequency resource blocks included in the second resource pool.

[0470] As an embodiment, the first resource pool is used for the first channel sensing.

[0471] As an embodiment, the first resource pool is used for resource perception in SL resource allocation mode 2.

[0472] As an embodiment, the first resource pool is indicated by higher layer signaling.

[0473] As an embodiment, any time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool is associated with one time-frequency resource block among the multiple time-frequency resource blocks included in the first resource pool.

[0474] As an embodiment, the given alternative time-frequency resource block is any time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool, the given time-frequency resource block is one time-frequency resource block among the multiple time-frequency resource blocks included in the first resource pool, and the given alternative time-frequency resource block is associated with the given time-frequency resource block.

[0475] As an embodiment, the given candidate time-frequency resource block in the target resource pool is associated with the given time-frequency resource block in the first resource pool.

[0476] As an embodiment, the given time-frequency resource block in the first resource pool is associated with the given candidate time-frequency resource block in the target resource pool.

[0477] As an embodiment, the given time-frequency resource block is orthogonal to the given alternative time-frequency resource block.

[0478] As an embodiment, the given time-frequency resource block and the given alternative time-frequency resource block are orthogonal in the time domain, and the given time-frequency resource block and the given alternative time-frequency resource block occupy the same frequency domain resources.

[0479] As an embodiment, the given time-frequency resource block includes L consecutive frequency domain resource blocks, the given alternative time-frequency resource block includes L consecutive frequency domain resource blocks, the L consecutive frequency domain resource blocks in the given time-frequency resource block are the same as the L consecutive frequency domain resource blocks in the given alternative time-frequency resource block, and L is a positive integer.

[0480] As an embodiment, the given time-frequency resource block and the given alternative time-frequency resource block are orthogonal in the time domain, and the positive integer number of subcarriers occupied by the given time-frequency resource block in the frequency domain is the same as the positive integer number of subcarriers occupied by the given alternative time-frequency resource block in the frequency domain.

[0481] As an embodiment, the given time-frequency resource block and the given alternative time-frequency resource block are orthogonal in the time domain, and the given time-frequency resource block and the given alternative time-frequency resource block are also orthogonal in the frequency domain.

[0482] As an embodiment, the given time-frequency resource block and the given candidate time-frequency resource block are two TDM (Time Division Multiplexing) time-frequency resource blocks in a secondary link resource pool.

[0483] As an embodiment, the given time-frequency resource block and the given candidate time-frequency resource block are two time-frequency resource blocks of TDM in the second resource pool.

[0484] As an embodiment, the given time-frequency resource block is earlier than the given alternative time-frequency resource block in the time domain.

[0485] As an embodiment, the given time-frequency resource block and the given alternative time-frequency resource block are two time-frequency resource blocks of TDM in the second resource pool, and the given time-frequency resource block is earlier than the given alternative time-frequency resource block in the time domain.

[0486] As an embodiment, the given candidate time-frequency resource block and the given time-frequency resource block are separated by a first time difference in the time domain, and the given candidate time-frequency resource block and the given time-frequency resource block occupy the same frequency domain resources.

[0487] As an embodiment, the given alternative time-frequency resource block and the given time-frequency resource block are separated by a first time difference in the time domain, and the L consecutive frequency domain resource blocks included in the frequency domain of the given alternative time-frequency resource block are the same as the L consecutive frequency domain resource blocks included in the frequency domain of the given time-frequency resource block.

[0488] As an embodiment, the first time difference includes a positive integer number of time domain resource units.

[0489] As an embodiment, the first time difference includes a positive integer number of time slots.

[0490] As an embodiment, the first time difference includes a positive integer number of multi-carrier symbols.

[0491] As an embodiment, the first resource pool includes a given time-frequency resource group, the given time-frequency resource group includes multiple time-frequency resource blocks, the intervals between any two adjacent time-frequency resource blocks in the multiple time-frequency resource blocks included in the given time-frequency resource group are equal in time domain, and the given time-frequency resource block is a time-frequency resource block in the given time-frequency resource group.

[0492] As an embodiment, the frequency domain resources occupied by the multiple time-frequency resource blocks included in the given time-frequency resource group are all the same.

[0493] As an embodiment, the L consecutive frequency domain resource blocks included in the frequency domain of any time-frequency resource block in the given time-frequency resource group are the same as the L consecutive frequency domain resource blocks included in the frequency domain of the given time-frequency resource block.

[0494] As an embodiment, the given time-frequency resource block is one of the multiple time-frequency resource blocks included in the given time-frequency resource group, the given alternative time-frequency resource block is a time-frequency resource block other than the multiple time-frequency resource blocks included in the given time-frequency resource group, and the interval in the time domain between the given alternative time-frequency resource block and the latest time-frequency resource block in the given time-frequency resource group is equal to the interval in the time domain between any two adjacent time-frequency resource blocks in the multiple time-frequency resource blocks included in the given time-frequency resource group.

[0495] As an embodiment, the given alternative time-frequency resource block is later than any time-frequency resource block in the given time-frequency resource group in the time domain.

[0496] As an embodiment, the L consecutive frequency domain resource blocks included in the frequency domain of the given alternative time-frequency resource block are the same as the L consecutive frequency domain resource blocks included in any time-frequency resource block in the given time-frequency resource group.

[0497] As an embodiment, the given time-frequency resource block includes the first time-frequency resource block in the present application, and the given alternative time-frequency resource block includes the first alternative time-frequency resource block in the present application.

[0498] As an embodiment, the first channel sensing is used to determine the target resource pool.

[0499] As an embodiment, the first channel sensing is performed in the first resource pool.

[0500] As an embodiment, performing the first channel sensing includes: receiving given signaling on a given time-frequency resource block in the first resource pool, the given signaling indicating a given reference signal, measuring the given reference signal on the given time-frequency resource block, and obtaining a measurement value for the given time-frequency resource block, and the measurement value for the given time-frequency resource block is used to determine whether the given alternative time-frequency resource block belongs to the target resource pool.

[0501] As an embodiment, executing the first channel sensing includes: receiving multiple first-class given signalings respectively on the multiple time-frequency resource blocks included in the given time-frequency resource group in the first resource pool, and the given signaling is one of the multiple first-class given signalings; the multiple first-class givens respectively indicate multiple first-class reference signals, and the given reference signal is one of the multiple first-class reference signals; measuring the multiple first-class reference signals respectively on the multiple time-frequency resource blocks included in the given time-frequency resource group, and then performing linear averaging to obtain the measurement value for the given time-frequency resource block, and the measurement value for the given time-frequency resource block is used to determine whether the given alternative time-frequency resource block belongs to the target resource pool.

[0502] As an embodiment, the measurement value of the given time-frequency resource block is higher than a first threshold, and the given candidate time-frequency resource block does not belong to the target resource pool.

[0503] As an embodiment, the measurement value of the given time-frequency resource block is not higher than a first threshold, and the given candidate time-frequency resource block belongs to the target resource pool.

[0504] As a sub-embodiment of the above embodiment, the measurement value for the given time-frequency resource block is not higher than a first threshold value includes the measurement value for the given time-frequency resource block being lower than the first threshold value.

[0505] As a sub-embodiment of the above embodiment, the measurement value for the given time-frequency resource block is not higher than a first threshold value includes that the measurement value for the given time-frequency resource block is equal to the first threshold value.

[0506] As an embodiment, when the measurement value for the given time-frequency resource block is higher than a first threshold, the given alternative time-frequency resource block does not belong to the target resource pool; when the measurement value for the given time-frequency resource block is not higher than the first threshold, the given alternative time-frequency resource block belongs to the target resource pool.

[0507] As an embodiment, executing the first channel sensing includes: receiving a second target signaling on the first time-frequency resource block in the first resource pool, the second target signaling indicating a first reference signal, measuring the first reference signal on the first time-frequency resource block, obtaining a measurement value for the first time-frequency resource block, the measurement value for the first time-frequency resource block is not higher than the first threshold, and the first alternative time-frequency resource block belongs to the target resource pool.

[0508] As an embodiment, the given signaling indicates a second priority, the first target signaling indicates a first priority, and the first priority and the second priority are used together to determine the first threshold.

[0509] As an embodiment, the given signaling includes one or more fields in a PHY layer signaling.

[0510] As an embodiment, the given signaling includes one or more fields in an SCI.

[0511] As an embodiment, the given signaling is an SCI.

[0512] As an embodiment, the given signaling includes all or part of a higher layer signaling.

[0513] As an embodiment, the given signaling is transmitted on PSCCH.

[0514] As an embodiment, the given signaling is transmitted on PSCCH and PSSCH.

[0515] As an embodiment, the given signaling indicates the given time-frequency resource block.

[0516] As an embodiment, the given signaling indicates the time-frequency resources occupied by the given time-frequency resource block.

[0517] As an embodiment, the given signaling includes the second target signaling in the present application.

[0518] As an embodiment, the given signaling indicates the given reference signal.

[0519] As an embodiment, the given reference signal is transmitted on the given time-frequency resource block.

[0520] As an embodiment, the given reference signal includes a first sequence.

[0521] As an embodiment, the first sequence is used to generate the given reference signal.

[0522] As an embodiment, the first sequence is a pseudo-random sequence (Pseudo-Random Sequence).

[0523] As an embodiment, the first sequence is a low peak to average power ratio sequence (Low-PAPR Sequence, Low-Peak to Average Power Ratio).

[0524] As an embodiment, the first sequence is a Gold sequence.

[0525] As an embodiment, the first sequence is an M sequence.

[0526] As an embodiment, the first sequence is a ZC (Zadeoff-Chu) sequence.

[0527] As an embodiment, the first sequence is sequentially subjected to sequence generation (Sequence Generation), discrete Fourier transform (Discrete Fourier Transform, DFT), modulation (Modulation) and resource element mapping (Resource Element Mapping), and broadband symbol generation (Generation) to obtain the given reference signal.

[0528] As an embodiment, the first sequence is sequentially subjected to sequence generation, resource particle mapping, and broadband symbol generation to obtain the given reference signal.

[0529] As an embodiment, the first sequence is mapped to a positive integer number of RE(s).

[0530] As an embodiment, the given reference signal is used for data demodulation.

[0531] As an embodiment, the given reference signal is used to detect channel state information.

[0532] As an embodiment, the given reference signal includes a PSCCH DMRS.

[0533] As an embodiment, the given reference signal includes PSSCH DMRS.

[0534] As an embodiment, the given reference signal includes UL (Uplink) DMRS.

[0535] As an embodiment, the given reference signal includes SL CSI-RS (Channel State Information Reference Signal, channel state information reference signal).

[0536] As an embodiment, the given reference signal includes a UL SRS (Sounding Reference Signal).

[0537] As an embodiment, the given reference signal includes S-SS / PSBCH Block (Sidelink Synchronization Signal / Physical Sidelink Broadcast Channel Block).

[0538] As an embodiment, the given reference signal includes the first reference signal in the present application.

[0539] As an embodiment, the given reference signal is measured on the given time domain resource block.

[0540] As an embodiment, the measurement for a given time-frequency resource block includes measuring a given reference signal on the given time-frequency resource block.

[0541] As an embodiment, the given time domain resource block includes the time-frequency resources occupied by the given reference signal.

[0542] As an embodiment, the phrase "measurement value for the given time-frequency resource block" includes performing coherent detection-based reception on the time-frequency resources occupied by the given reference signal on the given time-frequency resource block, that is, the first node uses the first sequence included in the given reference signal to coherently receive the signal on the time-frequency resources occupied by the given reference signal, and measures the signal energy obtained after the coherent reception.

[0543] As an embodiment, the phrase "the measurement value for the given time-frequency resource block" includes performing coherent detection-based reception on the time-frequency resources occupied by the given reference signal on the given time-frequency resource block, that is, the first node uses the first sequence included in the given reference signal to coherently receive the signal on the time-frequency resources occupied by the given reference signal, and then linearly averages the signal power received on the multiple REs included in the time-frequency resources occupied by the given reference signal to obtain the received power.

[0544] As an embodiment, the phrase "measurement value for the given time-frequency resource block" includes performing coherent detection-based reception on the time-frequency resources occupied by the given reference signal on the given time-frequency resource block, that is, the first node uses the first sequence included in the given reference signal to coherently receive the signal on the time-frequency resources occupied by the given reference signal, and averages the received signal energy in the time domain and the frequency domain to obtain the received power.

[0545] As an embodiment, the phrase "measurement value for the given time-frequency resource block" includes performing energy detection-based reception on the time-frequency resources occupied by the given reference signal on the given time-frequency resource block, that is, the first node senses the energy of the wireless signal on the multiple REs included in the time-frequency resources occupied by the given reference signal respectively, and averages the energy of the wireless signal on the multiple REs included in the time-frequency resources occupied by the given reference signal to obtain the received power.

[0546] As an embodiment, the phrase "measurement value for the given time-frequency resource block" includes performing energy detection-based reception on the given time-frequency resource block, that is, the first node receives the power of the given reference signal on the given time-frequency resource block, and linearly averages the received power of the given reference signal to obtain a signal strength indication.

[0547] As an embodiment, the phrase "measurement value for the given time-frequency resource block" includes performing energy detection-based reception on the given time-frequency resource block, that is, the first node senses the energy of the wireless signal on the given time-frequency resource block and averages it over time to obtain a signal strength indication.

[0548] As an embodiment, the phrase "measurement value for the given time-frequency resource block" includes reception based on blind detection on the given time-frequency resource block, that is, the first node receives the signal on the given time-frequency resource block and performs a decoding operation, and determines whether the decoding is correct based on the CRC bits to obtain the channel quality of the given reference signal on the time-frequency resources occupied by the given reference signal.

[0549] As an embodiment, the measurement value for the given time-frequency resource block includes the measurement value for the first time-frequency resource block in the present application.

[0550] As an embodiment, the measurement value for the first time-frequency resource block includes RSRP (Reference Signal Received Power) of the first reference signal measured on the first time-frequency resource block.

[0551] As an embodiment, the measurement value for the first time-frequency resource block includes an RSSI (Received Signal Strength Indication) of the first reference signal measured on the first time-frequency resource block.

[0552] As an embodiment, the measurement value for the first time-frequency resource block includes an RSRQ (Reference Signal Receiving Quality) of the first reference signal measured on the first time-frequency resource block.

[0553] As an embodiment, the measurement value for the first time-frequency resource block includes SNR (Signal to Noise Ratio).

[0554] As an embodiment, the measurement value for the first time-frequency resource block includes SINR (Signal to Interference plus Noise Ratio).

[0555] As an embodiment, the measurement value for the first time-frequency resource block includes SL SINR.

[0556] As an embodiment, the measurement value for the first time-frequency resource block includes SL RSRP.

[0557] As an embodiment, the measurement value for the first time-frequency resource block includes L1-RSRP (Layer 1-RSRP, layer 1-reference signal received power).

[0558] As an embodiment, the measurement value for the first time-frequency resource block includes L3-RSRP (Layer 3-RSRP, Layer 3-reference signal received power).

[0559] As an embodiment, the measurement value for the first time-frequency resource block includes SL RSSI.

[0560] As an embodiment, the measurement value for the first time-frequency resource block includes SL RSRQ.

[0561] As an embodiment, the measurement value for the first time-frequency resource block includes a CQI (Channel Quality Indicator).

[0562] As an embodiment, the measurement value for the first time-frequency resource block includes SL CQI.

[0563] As an embodiment, the unit of the measurement value for the first time-frequency resource block is dBm (millidecibels).

[0564] As an embodiment, the unit of the measurement value for the first time-frequency resource block is dB (decibel).

[0565] As an embodiment, the unit of the measurement value for the first time-frequency resource block is mW (milliwatt).

[0566] As an embodiment, the unit of the measurement value for the first time-frequency resource block is W (watt).

[0567] As an embodiment, the first threshold is a positive integer.

[0568] As an embodiment, the first threshold is a non-positive integer.

[0569] As an embodiment, the unit of the first threshold is dBm.

[0570] As an embodiment, the unit of the first threshold is dB.

[0571] As an embodiment, the unit of the first threshold is mW.

[0572] As an embodiment, the unit of the first threshold is W.

[0573] As an embodiment, the first threshold is a first-category threshold among multiple first-category thresholds.

[0574] As an embodiment, any first-category threshold among the multiple first-category thresholds is equal to (-128+(n-1)×2)dBm, where n is a positive integer not greater than 65.

[0575] As an embodiment, the plurality of first-category thresholds are respectively [-infinity dBm, -128 dBm, -126 dBm, ..., 0 dBm, infinity dBm].

[0576] As an embodiment, the first threshold is equal to (-128+(n-1)×2)dBm, where n is a positive integer not greater than 65.

[0577] As an embodiment, the first threshold is one of [-infinity dBm, -128 dBm, -126 dBm, ..., 0 dBm, infinity dBm].

[0578] As an embodiment, the first priority and the second priority are used together to determine the index of the first threshold among the multiple first-category thresholds.

[0579] As an embodiment, the multiple first-category thresholds include multiple threshold lists, and any threshold list in the multiple threshold lists includes a positive integer number of first-category thresholds.

[0580] As an embodiment, the positive integer first-category threshold values ​​included in any threshold list in the multiple threshold lists is a first-category threshold value in the multiple first-category threshold values.

[0581] As an embodiment, the first threshold list is a first threshold list among the multiple threshold lists, the first threshold list includes a positive integer number of first-category thresholds, and the first threshold is a first-category threshold among the positive integer number of first-category thresholds included in the first threshold list.

[0582] As an embodiment, the second priority is used to indicate the index of the first threshold list in the multiple threshold lists, and the first priority is used to indicate the index of the first threshold in the positive integer first category thresholds included in the first threshold list.

[0583] As an embodiment, the index of the first threshold in the multiple first-category thresholds is equal to the sum of C1 times the first priority and B1 plus 1, where B is a positive integer not greater than 12, and C is a positive integer.

[0584] As an embodiment, the index of the first threshold in the multiple first-category thresholds is equal to the sum of C2 times the second priority and B2 plus 1, B2 is a positive integer not greater than 12, and C2 is a positive integer.

[0585] As an embodiment, the index of the first threshold in the multiple first-category thresholds is equal to the sum of C1 times B1 and the first priority plus 1, where C1 is a positive integer.

[0586] As an embodiment, the index of the first threshold in the multiple first-category thresholds is equal to the sum of C2 times B2 and the second priority plus 1, where C2 is a positive integer.

[0587] As an embodiment, C1 is equal to 8.

[0588] As an embodiment, C1 is equal to 10.

[0589] As an embodiment, C2 is equal to 8.

[0590] As an embodiment, C2 is equal to 10.

[0591] As an embodiment, the first priority level and the second priority level are two positive integers respectively.

[0592] As an embodiment, the first priority level is a non-negative integer not greater than 12.

[0593] As an embodiment, the second priority level is a non-negative integer not greater than 12.

[0594] As an embodiment, the first priority is a positive integer among P positive integers, where P is a positive integer.

[0595] As an embodiment, the second priority level is a positive integer among P positive integers, where P is a positive integer.

[0596] As an embodiment, the first priority is a positive integer from 1 to P.

[0597] As an embodiment, the second priority level is a positive integer from 1 to P.

[0598] Example 7

[0599] Embodiment 7 illustrates a schematic diagram of the relationship between the first signaling, M first-type signaling, the second signaling, and N second-type signaling according to an embodiment of the present application, as shown in the attached figure. Figure 7 As shown in the attached Figure 7 In the figure, a solid arrow represents one first-class signaling among M first-class signalings in this application; a thick solid arrow represents the first signaling in this application; a dotted arrow represents one second-class signaling among N second-class signalings in this application; and a thick dotted arrow represents the second signaling in this application.

[0600] In Embodiment 7, the first signaling is any first-category signaling among the M first-category signalings; the second signaling is any second-category signaling among the N second-category signalings; and the first signaling is different from the second signaling.

[0601] As an embodiment, the format of the first signaling is different from the format (Format) of the second signaling.

[0602] As an embodiment, the first signaling includes a first field, and the second signaling includes the first field in the first signaling, and the first field is used to indicate one of a first characteristic value or a second characteristic value; the first field in the first signaling indicates the first characteristic value between the first characteristic value and the second characteristic value; the first field in the second signaling indicates the second characteristic value between the first characteristic value and the second characteristic value.

[0603] As an embodiment, a first scrambling sequence is used to scramble the first signaling; a second scrambling sequence is used to scramble the second signaling; and the first scrambling sequence is different from the second scrambling sequence.

[0604] As an embodiment, the first scrambling sequence is a pseudo-random sequence.

[0605] As an embodiment, the first scrambling sequence is an M sequence.

[0606] As an embodiment, the first scrambling sequence is a Gold sequence.

[0607] As an embodiment, the second scrambling sequence is a pseudo-random sequence.

[0608] As an embodiment, the second scrambling sequence is an M sequence.

[0609] As an embodiment, the second scrambling sequence is a Gold sequence.

[0610] As an embodiment, a first information bit block is used to generate the first signaling, and a second information bit block is used to generate the second signaling, and the length of the first information bit block is not equal to the length of the second information bit block.

[0611] As an embodiment, the first information bit block includes Q1 bits, the second information bit block includes Q2 bits, and Q1 is not equal to Q2.

[0612] As an embodiment, the first signaling indicates the first alternative time-frequency resource block, the first alternative time-frequency resource block is associated with the first time-frequency resource block, and the measurement of the first time-frequency resource block by the sender of the first signaling is lower than a first threshold.

[0613] As an embodiment, the second signaling indicates the first alternative time-frequency resource block, the first alternative time-frequency resource block is associated with a second time-frequency resource block, the measurement of the second time-frequency resource block by the sender of the second signaling is higher than a second threshold, and the second threshold is not lower than the first threshold.

[0614] As an embodiment, the first signaling indicates the first alternative time-frequency resource block, the first alternative time-frequency resource block is associated with the first time-frequency resource block, and the measurement of the first time-frequency resource block by the sender of the first signaling is lower than a first threshold; the second signaling indicates the first alternative time-frequency resource block, the first alternative time-frequency resource block is associated with the second time-frequency resource block, the measurement of the second time-frequency resource block by the sender of the second signaling is higher than a second threshold, and the second threshold is not lower than the first threshold.

[0615] As an embodiment, the first signaling indicates the first alternative time-frequency resource block, the first alternative time-frequency resource block is associated with the first time-frequency resource block, and the measurement of the first time-frequency resource block by the sender of the first signaling is lower than a first threshold; the second signaling indicates the first alternative time-frequency resource block, the first alternative time-frequency resource block is associated with the second time-frequency resource block, and the sender of the second signaling does not monitor the second time-frequency resource block.

[0616] Example 8

[0617] Embodiment 8 illustrates a flowchart of determining whether the first candidate time-frequency resource block belongs to the target resource subset according to an embodiment of the present application, as shown in the attached Figure 8 As shown in the attached Figure 8 In step S801, a first value and a second value are determined; in step S802, it is determined whether M is greater than the first value; in step S803, it is determined whether N is less than the second value; when M is greater than the first value, step S803 is executed; when M is less than or equal to the first value, step S805 is executed, and the first alternative time-frequency resource block does not belong to the target resource subset; when N is less than the second value, step S804 is executed, and the first alternative time-frequency resource block belongs to the target resource subset; when N is greater than or equal to the second value, step S805 is executed, and the first alternative time-frequency resource block does not belong to the target resource subset.

[0618] In Embodiment 8, the size relationship between the M and the first value, and the size relationship between the N and the second value are used together to determine whether the first candidate time-frequency resource block belongs to the target resource subset.

[0619] As an embodiment, the first value is predefined.

[0620] As an embodiment, the first value is configurable.

[0621] As an embodiment, the first value is a positive integer.

[0622] As an embodiment, the first value is a non-negative integer.

[0623] As an embodiment, the first value is a positive integer greater than 1.

[0624] As an embodiment, the second value is predefined.

[0625] As an embodiment, the second value is configurable.

[0626] As an embodiment, the second value is a non-negative integer.

[0627] As an embodiment, the second value is a positive integer greater than 1.

[0628] As an embodiment, the second value is equal to 1.

[0629] As an embodiment, the first value is a positive integer not less than the second value.

[0630] As an embodiment, the first value is a positive integer greater than the second value.

[0631] As an embodiment, the M is greater than the first value, the N is less than the second value, and the first candidate time-frequency resource block belongs to the target resource subset.

[0632] As an embodiment, the M is greater than the first value, the N is greater than the second value, and the first candidate time-frequency resource block does not belong to the target resource subset.

[0633] As an embodiment, the M is greater than the first value, the N is equal to the second value, and the first alternative time-frequency resource block does not belong to the target resource subset.

[0634] As an embodiment, the M is smaller than the first value, and the first candidate time-frequency resource block does not belong to the target resource subset.

[0635] As an embodiment, the M is smaller than the first value, the N is smaller than the second value, and the first candidate time-frequency resource block does not belong to the target resource subset.

[0636] As an embodiment, the M is smaller than the first value, the N is larger than the second value, and the first candidate time-frequency resource block does not belong to the target resource subset.

[0637] As an embodiment, the M is smaller than the first value, the N is equal to the second value, and the first candidate time-frequency resource block does not belong to the target resource subset.

[0638] As an embodiment, the M is equal to the first value, and the first candidate time-frequency resource block does not belong to the target resource subset.

[0639] As an embodiment, the M is equal to the first value, the N is less than the second value, and the first candidate time-frequency resource block does not belong to the target resource subset.

[0640] As an embodiment, the M is equal to the first value, the N is greater than the second value, and the first candidate time-frequency resource block does not belong to the target resource subset.

[0641] As an embodiment, the M is equal to the first value, the N is equal to the second value, and the first candidate time-frequency resource block does not belong to the target resource subset.

[0642] As an embodiment, the first candidate time-frequency resource block belongs to the target resource subset, which means that the first candidate time-frequency resource block is one of the positive integer number of time-frequency resource blocks included in the target resource subset.

[0643] As an embodiment, the first candidate time-frequency resource block does not belong to the target resource subset, which means that the first candidate time-frequency resource block is different from any time-frequency resource block among the positive integer number of time-frequency resource blocks included in the target resource subset.

[0644] Example 9

[0645] Embodiment 9 illustrates a flowchart of determining whether the first candidate time-frequency resource block belongs to the target resource subset according to an embodiment of the present application, as shown in the attached Fig. 9 As shown in the attached Fig. 9 In step S901, M first-class signaling and N second-class signaling are received; a fourth value is determined in step S902; in step S903, it is determined whether the ratio of N to M is less than the fourth value; when the ratio of N to M is less than the fourth value, step S904 is executed, and the first alternative time-frequency resource block belongs to the target resource subset; when the ratio of N to M is greater than or equal to the fourth value, step S905 is executed, and the first alternative time-frequency resource block does not belong to the target resource subset.

[0646] In Embodiment 9, the relationship between the M and the N is used to determine whether the first candidate time-frequency resource block belongs to the target resource subset.

[0647] As an embodiment, when the difference between the M and the N is greater than a third value, the first alternative time-frequency resource block belongs to the target resource subset; when the difference between the M and the N is less than a third value, the first alternative time-frequency resource block does not belong to the target resource subset.

[0648] As an embodiment, when the ratio of the N to the M is less than a fourth value, the first alternative time-frequency resource block belongs to the target resource subset; when the ratio of the N to the M is greater than a fourth value, the first alternative time-frequency resource block does not belong to the target resource subset.

[0649] As an embodiment, M is a positive integer not less than N.

[0650] As an embodiment, M is a positive integer greater than N.

[0651] As an embodiment, the third value is a real number greater than 0.

[0652] As an embodiment, the third value is equal to 0.

[0653] As an embodiment, the third value is predefined.

[0654] As an embodiment, the third value is configurable.

[0655] As an embodiment, the fourth numerical value is a real number greater than 0 and less than 1.

[0656] As an embodiment, the fourth value is equal to 1.

[0657] As an embodiment, the fourth value is predefined.

[0658] As an embodiment, the fourth value is configurable.

[0659] Example 10

[0660] Embodiment 10 illustrates a structural block diagram of a processing device used in a first node, as shown in the attached figure. Fig.10 In Embodiment 10, the first node device processing apparatus 1000 is mainly composed of a first receiver 1001 and a first transmitter 1002 .

[0661] As an embodiment, the first receiver 1001 includes the attached Figure 4 At least one of the antenna 452, transmitter / receiver 454, multi-antenna reception processor 458, reception processor 456, controller / processor 459, memory 460 and data source 467.

[0662] As an embodiment, the first transmitter 1002 includes the attached Figure 4 At least one of the antenna 452, transmitter / receiver 454, multi-antenna transmitter processor 457, transmit processor 468, controller / processor 459, memory 460 and data source 467.

[0663] In embodiment 10, the first receiver 1001 performs a first channel sensing; the first receiver 1001 receives M first-type signaling and N second-type signaling, where M and N are both positive integers; the first transmitter 1002 sends a first signal on a target time-frequency resource block; the first channel sensing is used to determine a target resource pool, where the target resource pool includes multiple time-frequency resource blocks; the first candidate time-frequency resource block is a time-frequency resource block in the multiple time-frequency resource blocks included in the target resource pool; the target time-frequency resource block belongs to a target resource subset, and the target resource The subset includes a positive integer number of time-frequency resource blocks, and any time-frequency resource block included in the target resource subset belongs to the target resource pool; any first-class signaling among the M first-class signalings indicates the first alternative time-frequency resource block; any second-class signaling among the N second-class signalings indicates the first alternative time-frequency resource block, and any first-class signaling among the M first-class signalings and any second-class signaling among the N second-class signalings are not the same; the M and the N are used together to determine whether the first alternative time-frequency resource block belongs to the target resource subset.

[0664] As an embodiment, the first signaling is any first-category signaling among the M first-category signalings; the second signaling is any second-category signaling among the N second-category signalings; and the first signaling is different from the second signaling.

[0665] As an embodiment, senders of any two first-category signalings among the M first-category signalings are not co-located; senders of any two second-category signalings among the N second-category signalings are not co-located.

[0666] As an embodiment, the size relationship between M and the first numerical value, and the size relationship between N and the second numerical value are used together to determine whether the first alternative time-frequency resource block belongs to the target resource subset; the first numerical value is predefined, or the first numerical value is configurable; the second numerical value is predefined, or the second numerical value is configurable.

[0667] As an embodiment, the relationship between the M and the N is used to determine whether the first candidate time-frequency resource block belongs to the target resource subset.

[0668] As an embodiment, the first transmitter 1002 sends a first target signaling on the target time-frequency resource block; the first channel sensing is performed in a first resource pool, and the first resource pool includes multiple time-frequency resource blocks; any time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool is associated with a time-frequency resource block in the first resource pool; the first alternative time-frequency resource block is associated with a first time-frequency resource block, and the first time-frequency resource block is one of the multiple time-frequency resource blocks included in the first resource pool; the measurement value for the first time-frequency resource block is not higher than a first threshold; the first target signaling is used to indicate the target time-frequency resource block; the first target signaling includes a first priority, and the first priority is used to determine the first threshold.

[0669] As an embodiment, the first node device 1000 is a user equipment.

[0670] As an embodiment, the first node device 1000 is a relay node.

[0671] As an embodiment, the first node device 1000 is a base station device.

[0672] A person of ordinary skill in the art can understand that all or part of the steps in the above method can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk or an optical disk. Optionally, all or part of the steps in the above embodiment can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiment can be implemented in the form of hardware or in the form of a software function module, and the present application is not limited to any specific form of software and hardware combination. The first node device in the present application includes but is not limited to mobile phones, tablet computers, notebooks, Internet cards, low-power devices, eMTC devices, NB-IoT devices, vehicle-mounted communication devices, aircraft, airplanes, drones, remote-controlled aircraft and other wireless communication devices. The second node device in the present application includes but is not limited to mobile phones, tablet computers, notebooks, Internet cards, low-power devices, eMTC devices, NB-IoT devices, vehicle-mounted communication devices, aircraft, airplanes, drones, remote-controlled aircraft and other wireless communication devices. The user equipment or UE or terminal in the present application includes but is not limited to mobile phones, tablet computers, notebooks, Internet cards, low-power devices, eMTC devices, NB-IoT devices, vehicle-mounted communication devices, aircraft, airplanes, drones, remote-controlled aircraft and other wireless communication devices. The base station equipment or base station or network side equipment in this application includes but is not limited to macrocellular base stations, microcellular base stations, home base stations, relay base stations, eNB, gNB, transmission receiving nodes TRP, GNSS, relay satellites, satellite base stations, aerial base stations and other wireless communication equipment.

[0673] The above is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A first node used for wireless communication, characterized in that: include: A first receiver, performing first channel sensing; Receive M first-class signaling and N second-class signaling, where M and N are both positive integers; A first transmitter sends a first signal on a target time-frequency resource block; Among them, the first channel sensing is used to determine a target resource pool, and the target resource pool includes multiple time-frequency resource blocks; the first alternative time-frequency resource block is a time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool; the target time-frequency resource block belongs to a target resource subset, and the target resource subset includes a positive integer number of time-frequency resource blocks, and any time-frequency resource block included in the target resource subset belongs to the target resource pool; any first-class signaling among the M first-class signalings indicates the first alternative time-frequency resource block; any second-class signaling among the N second-class signalings indicates the first alternative time-frequency resource block, and any first-class signaling among the M first-class signalings and any second-class signaling among the N second-class signalings are not the same; the M and the N are used together to determine whether the first alternative time-frequency resource block belongs to the target resource subset.

2. The first node according to claim 1, characterized in that: The first signaling is any first-category signaling among the M first-category signalings; the second signaling is any second-category signaling among the N second-category signalings; and the first signaling is different from the second signaling.

3. The first node according to claim 1 or 2, characterized in that: The senders of any two first-type signalings among the M first-type signalings are not co-located; the senders of any two second-type signalings among the N second-type signalings are not co-located.

4. The first node according to any one of claims 1 or 2, characterized in that: The magnitude relationship between M and the first value, and the magnitude relationship between N and the second value are used together to determine whether the first candidate time-frequency resource block belongs to the target resource subset; The first value is predefined or the first value is configurable; the second value is predefined or the second value is configurable.

5. The first node according to claim 3, characterized in that: The magnitude relationship between M and the first value, and the magnitude relationship between N and the second value are used together to determine whether the first candidate time-frequency resource block belongs to the target resource subset; The first value is predefined or the first value is configurable; the second value is predefined or the second value is configurable.

6. The first node according to any one of claims 1 or 2, characterized in that: The relationship between M and N is used to determine whether the first candidate time-frequency resource block belongs to the target resource subset.

7. The first node according to claim 3, characterized in that: The relationship between M and N is used to determine whether the first candidate time-frequency resource block belongs to the target resource subset.

8. The first node according to any one of claims 1, 2, 5 or 7, characterized in that: include: The first transmitter sends a first target signaling on the target time-frequency resource block; Among them, the first channel sensing is performed in a first resource pool, and the first resource pool includes multiple time-frequency resource blocks; any time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool is associated with a time-frequency resource block in the first resource pool; the first alternative time-frequency resource block is associated with a first time-frequency resource block, and the first time-frequency resource block is one of the multiple time-frequency resource blocks included in the first resource pool; the measurement value of the first time-frequency resource block is not higher than a first threshold; the first target signaling is used to indicate the target time-frequency resource block; the first target signaling includes a first priority, and the first priority is used to determine the first threshold.

9. The first node according to claim 3, characterized in that: include: The first transmitter sends a first target signaling on the target time-frequency resource block; wherein the first channel sensing is performed in a first resource pool, and the first resource pool includes multiple time-frequency resource blocks; any time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool is associated with a time-frequency resource block in the first resource pool; the first alternative time-frequency resource block is associated with a first time-frequency resource block, and the first time-frequency resource block is one of the multiple time-frequency resource blocks included in the first resource pool; the measurement value for the first time-frequency resource block is not higher than a first threshold; the first target signaling is used to indicate the target time-frequency resource block; the first target signaling includes a first priority, and the first priority is used to determine the first threshold.

10. The first node according to claim 4, characterized in that: include: The first transmitter sends a first target signaling on the target time-frequency resource block; wherein the first channel sensing is performed in a first resource pool, and the first resource pool includes multiple time-frequency resource blocks; any time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool is associated with a time-frequency resource block in the first resource pool; the first alternative time-frequency resource block is associated with a first time-frequency resource block, and the first time-frequency resource block is one of the multiple time-frequency resource blocks included in the first resource pool; the measurement value for the first time-frequency resource block is not higher than a first threshold; the first target signaling is used to indicate the target time-frequency resource block; the first target signaling includes a first priority, and the first priority is used to determine the first threshold.

11. The first node according to claim 6, characterized in that: include: The first transmitter sends a first target signaling on the target time-frequency resource block; wherein the first channel sensing is performed in a first resource pool, and the first resource pool includes multiple time-frequency resource blocks; any time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool is associated with a time-frequency resource block in the first resource pool; the first alternative time-frequency resource block is associated with a first time-frequency resource block, and the first time-frequency resource block is one of the multiple time-frequency resource blocks included in the first resource pool; the measurement value for the first time-frequency resource block is not higher than a first threshold; the first target signaling is used to indicate the target time-frequency resource block; the first target signaling includes a first priority, and the first priority is used to determine the first threshold.

12. A method in a first node for wireless communication, characterized in that: include: performing first channel sensing; Receive M first-class signaling and N second-class signaling, where M and N are both positive integers; Sending a first signal on a target time-frequency resource block; Among them, the first channel sensing is used to determine a target resource pool, and the target resource pool includes multiple time-frequency resource blocks; the first alternative time-frequency resource block is a time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool; the target time-frequency resource block belongs to a target resource subset, and the target resource subset includes a positive integer number of time-frequency resource blocks, and any time-frequency resource block included in the target resource subset belongs to the target resource pool; any first-class signaling among the M first-class signalings indicates the first alternative time-frequency resource block; any second-class signaling among the N second-class signalings indicates the first alternative time-frequency resource block, and any first-class signaling among the M first-class signalings and any second-class signaling among the N second-class signalings are not the same; the M and the N are used together to determine whether the first alternative time-frequency resource block belongs to the target resource subset.

13. The method in the first node according to claim 12, characterized in that: The first signaling is any first-category signaling among the M first-category signalings; the second signaling is any second-category signaling among the N second-category signalings; and the first signaling is different from the second signaling.

14. The method in the first node according to claim 12 or 13, characterized in that: The senders of any two first-type signalings among the M first-type signalings are not co-located; the senders of any two second-type signalings among the N second-type signalings are not co-located.

15. The method in the first node according to any one of claims 12 or 13, characterized in that: The magnitude relationship between M and the first value, and the magnitude relationship between N and the second value are used together to determine whether the first candidate time-frequency resource block belongs to the target resource subset; The first value is predefined or the first value is configurable; the second value is predefined or the second value is configurable.

16. The method in the first node according to claim 14, characterized in that: The magnitude relationship between M and the first value, and the magnitude relationship between N and the second value are used together to determine whether the first candidate time-frequency resource block belongs to the target resource subset; The first value is predefined or the first value is configurable; the second value is predefined or the second value is configurable.

17. The method in the first node according to any one of claims 12, 13 or 16, characterized in that: The relationship between M and N is used to determine whether the first candidate time-frequency resource block belongs to the target resource subset.

18. The method in the first node according to claim 14, characterized in that: The relationship between M and N is used to determine whether the first candidate time-frequency resource block belongs to the target resource subset.

19. The method in the first node according to claim 15, characterized in that: The relationship between M and N is used to determine whether the first candidate time-frequency resource block belongs to the target resource subset.

20. The method in the first node according to any one of claims 12, 13, 16, 18 or 19, characterized in that: include: Sending a first target signaling on the target time-frequency resource block; Among them, the first channel sensing is performed in a first resource pool, and the first resource pool includes multiple time-frequency resource blocks; any time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool is associated with a time-frequency resource block in the first resource pool; the first alternative time-frequency resource block is associated with a first time-frequency resource block, and the first time-frequency resource block is one of the multiple time-frequency resource blocks included in the first resource pool; the measurement value of the first time-frequency resource block is not higher than a first threshold; the first target signaling is used to indicate the target time-frequency resource block; the first target signaling includes a first priority, and the first priority is used to determine the first threshold.

21. The method in the first node according to claim 14, characterized in that: include: A first target signaling is sent on the target time-frequency resource block; wherein the first channel sensing is performed in a first resource pool, and the first resource pool includes multiple time-frequency resource blocks; any time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool is associated with a time-frequency resource block in the first resource pool; the first alternative time-frequency resource block is associated with a first time-frequency resource block, and the first time-frequency resource block is one of the multiple time-frequency resource blocks included in the first resource pool; the measurement value for the first time-frequency resource block is not higher than a first threshold; the first target signaling is used to indicate the target time-frequency resource block; the first target signaling includes a first priority, and the first priority is used to determine the first threshold.

22. The method in the first node according to claim 15, characterized in that: include: A first target signaling is sent on the target time-frequency resource block; wherein the first channel sensing is performed in a first resource pool, and the first resource pool includes multiple time-frequency resource blocks; any time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool is associated with a time-frequency resource block in the first resource pool; the first alternative time-frequency resource block is associated with a first time-frequency resource block, and the first time-frequency resource block is one of the multiple time-frequency resource blocks included in the first resource pool; the measurement value for the first time-frequency resource block is not higher than a first threshold; the first target signaling is used to indicate the target time-frequency resource block; the first target signaling includes a first priority, and the first priority is used to determine the first threshold.

23. The method in the first node according to claim 17, characterized in that: include: A first target signaling is sent on the target time-frequency resource block; wherein the first channel sensing is performed in a first resource pool, and the first resource pool includes multiple time-frequency resource blocks; any time-frequency resource block among the multiple time-frequency resource blocks included in the target resource pool is associated with a time-frequency resource block in the first resource pool; the first alternative time-frequency resource block is associated with a first time-frequency resource block, and the first time-frequency resource block is one of the multiple time-frequency resource blocks included in the first resource pool; the measurement value for the first time-frequency resource block is not higher than a first threshold; the first target signaling is used to indicate the target time-frequency resource block; the first target signaling includes a first priority, and the first priority is used to determine the first threshold.

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