Method and apparatus used in node for wireless communications

Abstract

Provided in the present application are a method and apparatus used in a node for wireless communications, which method and apparatus are used for realizing initial beam pairing based on a sidelink synchronization signal block. The method comprises: receiving first information, wherein the first information is used for determining a plurality of sidelink signal resources; and sending a first sidelink signal group on a first sidelink signal resource, wherein the plurality of sidelink signal resources are associated with a plurality of first-type identifiers, a first identifier is one of the plurality of first-type identifiers, the first identifier is related to a first node, and the first identifier is used for determining the first sidelink signal resource from among the plurality of sidelink signal resources.

Description

Method and apparatus in a node for wireless communication Technical Field

[0001] The present application relates to the field of communication technology, and more particularly, to a method and apparatus in a node for wireless communication. Background Art

[0002] In sideline communications, using sideline sync signal blocks, or a modified format of sideline sync signal blocks, as reference signals for initial beam pairing has become an option. However, conventional sideline sync signal blocks can only distinguish the type of synchronization source belonging to the transmitting device. Therefore, how to perform initial beam pairing based on sideline sync signal blocks and how the receiving device of sideline sync signal blocks can identify the transmitting device for initial beam pairing remain technical challenges.

[0003] Summary of the Invention

[0004] The embodiments of the present application provide a method and apparatus in a node for wireless communication. The following introduces various aspects of the present application.

[0005] In a first aspect, a method is provided in a first node for wireless communication, comprising: receiving first information, wherein the first information is used to determine a plurality of side signal resources; sending a first side signal group on the first side signal resource; wherein the plurality of side signal resources are associated with a plurality of first-class identifiers, the first identifier is one of the plurality of first-class identifiers, the first identifier is related to the first node, and the first identifier is used to determine the first side signal resource from the plurality of side signal resources.

[0006] According to a second aspect, a method is provided in a second node for wireless communication, comprising: receiving first information, wherein the first information is used to determine a plurality of side signal resources; receiving at least one side signal in a first side signal group on the first side signal resource; wherein the plurality of side signal resources are associated with a plurality of first-class identifiers, the first identifier is one of the plurality of first-class identifiers, the first identifier is related to the first side signal resource, and the first identifier is used to determine the first node that sends the one or more side signals.

[0007] According to a third aspect, a method in a third node for wireless communication is provided, comprising: sending first information, wherein the first information is used to determine a plurality of side signal resources; wherein the plurality of side signal resources are associated with a plurality of first-class identifiers, the first identifier is one of the plurality of first-class identifiers, the first identifier is related to a first node receiving the first information, and the first identifier is used by the first node to determine a first side signal resource for sending a first side signal group from the plurality of side signal resources.

[0008] In a fourth aspect, a first node for wireless communication is provided, comprising: a first receiver for receiving first information, wherein the first information is used to determine a plurality of side signal resources; a first transmitter for sending a first side signal group on the first side signal resource; wherein the plurality of side signal resources are associated with a plurality of first-class identifiers, the first identifier is one of the plurality of first-class identifiers, the first identifier is related to the first node, and the first identifier is used to determine the first side signal resource from the plurality of side signal resources.

[0009] In the fifth aspect, a second node for wireless communication is provided, comprising: a third receiver for receiving first information, wherein the first information is used to determine multiple side signal resources; a fourth receiver for receiving at least one side signal in a first side signal group on the first side signal resource; wherein the multiple side signal resources are associated with multiple first-class identifiers, the first identifier is one of the multiple first-class identifiers, the first identifier is related to the first side signal resource, and the first identifier is used to determine the first node sending the one or more side signals.

[0010] In the sixth aspect, a third node for wireless communication is provided, comprising: a second transmitter for sending first information, wherein the first information is used to determine multiple side signal resources; wherein the multiple side signal resources are associated with multiple first-class identifiers, the first identifier is one of the multiple first-class identifiers, the first identifier is related to the first node receiving the first information, and the first identifier is used by the first node to determine the first side signal resource for sending the first side signal group from the multiple side signal resources.

[0011] In the seventh aspect, a first node used for wireless communication is provided, comprising a transceiver, a memory and a processor, wherein the memory is used to store programs, the processor is used to call the programs in the memory and control the transceiver to receive or send signals so that the first node executes the method described in the first aspect.

[0012] In the eighth aspect, a second node used for wireless communication is provided, comprising a transceiver, a memory and a processor, wherein the memory is used to store programs, and the processor is used to call the programs in the memory and control the transceiver to receive or send signals so that the second node executes the method described in the second aspect.

[0013] In the ninth aspect, a third node used for wireless communication is provided, comprising a transceiver, a memory and a processor, wherein the memory is used to store programs, the processor is used to call the programs in the memory and control the transceiver to receive or send signals so that the third node executes the method described in the third aspect.

[0014] In a tenth aspect, an embodiment of the present application provides a communication system, which includes the first node and / or the second node and / or the third node described above. In another possible design, the system may also include other devices that interact with the first node, the second node, or the third node in the solution provided in the embodiment of the present application.

[0015] In the eleventh aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program enables a computer to execute part or all of the steps in the methods of the above aspects.

[0016] In a twelfth aspect, embodiments of the present application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, wherein the computer program is operable to cause a computer to perform some or all of the steps of the methods described in each of the above aspects. In some implementations, the computer program product may be a software installation package.

[0017] In the thirteenth aspect, an embodiment of the present application provides a chip, which includes a memory and a processor. The processor can call and run a computer program from the memory to implement some or all of the steps described in the methods of the above aspects.

[0018] In this embodiment of the present application, the first information received by the first node may indicate multiple sidelink signal resources used to transmit a sidelink signal group, and the multiple sidelink signal resources may be mapped to multiple node identifiers. Thus, the second node receiving the sidelink signal can distinguish different transmitting nodes based on the resources corresponding to the sidelink signal, thereby identifying the node transmitting the sidelink signal and achieving effective initial beam pairing.

[0019] In this embodiment of the present application, the first information may indicate multiple sidelink signal resources, that is, pre-configuring resources for multiple nodes to use for initial beam pairing. The first node transmits a sidelink signal group on the first sidelink signal resource. After receiving the first information, the second node can determine available beam information by detecting the sidelink signal.

[0020] In this embodiment of the present application, any two nodes in sideline communication perform initial beam pairing before establishing a sideline unicast link. Using paired beams to establish a unicast link can expand the link range between the sending and receiving nodes, enabling more nodes to realize advanced business use cases.

[0021] In an embodiment of the present application, by performing initial beam pairing before establishing a side unicast link, the sending node can effectively avoid sending direct communication request messages with high resource overhead on all beams through beam scanning, thereby significantly reducing resource waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a diagram illustrating an example of a system architecture of a wireless communication system to which an embodiment of the present application is applicable.

[0023] FIG2 is a schematic diagram of the time slot structure of the side synchronization signal block.

[0024] FIG3 is a schematic diagram showing the distribution of multiple S-SSBs in one cycle.

[0025] FIG4 is a schematic flow chart of a method in a first node for wireless communication provided in an embodiment of the present application.

[0026] FIG5 is a schematic flow chart of an implementation method of initial beam pairing in the first operation.

[0027] FIG6 is a flowchart illustrating another implementation of initial beam pairing in the first operation.

[0028] FIG7 is a flow chart showing an implementation method of establishing a side unicast link in the first operation.

[0029] FIG8 is a flow chart of a possible implementation of the method shown in FIG4 .

[0030] FIG9 is a flowchart of another possible implementation of the method shown in FIG4 .

[0031] FIG10 is a schematic structural diagram of a first node for wireless communication provided in an embodiment of the present application.

[0032] FIG11 is a schematic structural diagram of a second node for wireless communication provided in an embodiment of the present application.

[0033] FIG12 is a schematic structural diagram of a third node for wireless communication provided in an embodiment of the present application.

[0034] FIG13 is a schematic structural diagram of the device provided in an embodiment of the present application.

[0035] FIG14 is a schematic diagram of the hardware modules of the communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] The following will describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. With respect to the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0037] Figure 1 is a diagram illustrating a system architecture of a wireless communication system 100 applicable to an embodiment of the present application. The wireless communication system 100 may include a network device 110 and user devices 121 to 129. The network device 110 may provide communication coverage for a specific geographic area and may communicate with terminals within the coverage area.

[0038] In some implementations, user equipment (UE) can communicate with other user devices via a sidelink (SL). Sidelink communication may also be referred to as proximity-based services (ProSe) communication, unilateral communication, sidelink communication, device-to-device (D2D) communication, etc.

[0039] In other words, sidelink data is transmitted between user equipments via a sidelink. The sidelink data may include data and / or control signaling. In some implementations, the sidelink data may be, for example, a physical sidelink control channel (PSCCH), a physical sidelink shared channel (PSSCH), a PSCCH demodulation reference signal (DMRS), a PSSCH DMRS, a physical sidelink feedback channel (PSFCH), etc.

[0040] The following describes several common sidelink communication scenarios with reference to Figure 1. Sidelink communication can be categorized into three scenarios, depending on whether the user device in the sidelink is within the coverage of the network device. Scenario 1: The user device conducts sidelink communication within the coverage of the network device. Scenario 2: Some user devices conduct sidelink communication within the coverage of the network device. Scenario 3: The user device conducts sidelink communication outside the coverage of the network device.

[0041] As shown in Figure 1, in scenario 1, user equipments 121-122 can communicate via a sidelink, and user equipments 121-122 are all within the coverage of network device 110, or in other words, user equipments 121-122 are all within the coverage of the same network device 110. In this scenario, network device 110 can send configuration signaling to user equipments 121-122, and accordingly, user equipments 121-122 communicate via the sidelink based on the configuration signaling.

[0042] As shown in Figure 1, in scenario 2, user equipment 123-124 can communicate via a sidelink, and user equipment 123 is within the coverage of network device 110, while user equipment 124 is outside the coverage of network device 110. In this scenario, user equipment 123 receives configuration information from network device 110 and communicates via the sidelink based on the configuration signaling. However, for user equipment 124, since user equipment 124 is outside the coverage of network device 110, it cannot receive the configuration information of network device 110. In this case, user equipment 124 can obtain the configuration of the sidelink communication based on pre-configuration configuration information and / or configuration information sent by user equipment 123 within the coverage area, so as to communicate with user equipment 123 via the sidelink based on the obtained configuration.

[0043] In some cases, the user equipment 123 may send the configuration information to the user equipment 124 via a physical sidelink broadcast channel (PSBCH) to configure the user equipment 124 to communicate via the sidelink.

[0044] As shown in Figure 1, in scenario 3, user equipments 125-129 are all outside the coverage of network device 110 and cannot communicate with network device 110. In this case, the user equipments can all perform sidelink communication based on pre-configured information.

[0045] In some cases, user devices 127-129 located outside the coverage area of ​​the network device can form a communication group, and the user devices 127-129 in the communication group can communicate with each other. In addition, user device 127 in the communication group can serve as a central control node, also known as a cluster header (CH), and correspondingly, user devices in other communication groups can be referred to as "group members."

[0046] It should be noted that Figure 1 exemplarily shows a network device and multiple user devices. Optionally, the wireless communication system 100 may include multiple network devices and the coverage range of each network device may include other numbers of user devices. This embodiment of the present application does not limit this.

[0047] Optionally, the wireless communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiment of the present application.

[0048] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: fifth generation (5G) system or new radio (NR) system, long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, etc. The technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system, satellite communication system, etc.

[0049] The user equipment in the embodiment of the present application may also be referred to as a terminal device, an access terminal, a user unit, a user station, a mobile station, a mobile station (MS), a mobile terminal (MT), a remote station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent or a user device. The user equipment in the embodiment of the present application may be a device that provides voice and / or data connectivity to a user, and may be used to connect people, objects and machines, such as a handheld device with a wireless connection function, a vehicle-mounted device, etc. The user equipment in the embodiment of the present application may be a mobile phone, a tablet computer (Pad), a laptop computer, a PDA, a mobile internet device (MID), a wearable device, a vehicle, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. Optionally, the user equipment may act as a base station. For example, a user device can act as a dispatching entity, providing sidelink signals between user devices in vehicle-to-everything (V2X) or D2D networks. For example, a cell phone and a car can communicate with each other using sidelink data. A cell phone and a smart home device can also communicate with each other without relaying the communication signal through a base station.

[0050] The network device in the embodiments of the present application may be a device for communicating with a user equipment, and may also be referred to as an access network device or a radio access network device. For example, the network device may be a base station. The network device in the embodiments of the present application may refer to a radio access network (RAN) node (or device) that connects the user equipment to a wireless network. A base station can broadly cover various names as follows, or be replaced with the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, transmitting and receiving point (TRP), transmitting point (TP), access point (AP), master station MeNB, secondary station SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. A base station can also refer to a communication module, a modem or a chip used to be set in the aforementioned device or apparatus. The base station can also be a mobile switching center and a device that performs base station functions in D2D, V2X, and machine-to-machine (M2M) communications, a network-side device in a 6G network, or a device that performs base station functions in future communication systems. The base station can support networks with the same or different access technologies. The embodiments of this application do not limit the specific technology and specific device form used by the network equipment.

[0051] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move based on the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device that communicates with another base station.

[0052] In some deployments, the network device in the embodiments of the present application may refer to a CU or a DU, or the network device may include a CU and a DU. The gNB may also include an AAU.

[0053] The network equipment and user equipment can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water; can also be deployed in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the scenarios in which the network equipment and user equipment are located.

[0054] It should be understood that all or part of the functions of the communication device in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (such as a cloud platform).

[0055] For ease of understanding, some relevant technical knowledge involved in the embodiments of this application is first introduced. The following related technologies can be combined with the technical solutions of the embodiments of this application as optional solutions, and they all fall within the scope of protection of the embodiments of this application. The embodiments of this application include at least part of the following contents.

[0056] It should be understood that the interpretation of the terminology in the embodiments of the present application can refer to the specification protocols TS36 series, TS37 series and TS38 series of the 3rd Generation Partnership Project (3GPP), but can also refer to the specification protocols of the Institute of Electrical and Electronics Engineers (IEEE).

[0057] With the development of communication technology, technical research and standardization of sideline communication are gradually being carried out. The sideline communication developed in the RAN of 5G NR Release-16 (Rel-16) is mainly used to support advanced V2X applications. In Rel-17, the System Architecture 2 (SA2) Working Group specifically studies and standardizes ProSe, including public safety and commercial related services. As part of Rel-17, in order to save power consumption for battery-constrained users and improve the reliability of sideline communication, the Radio Access Network Working Group 1 (RAN1) and RAN2 developed power saving technologies (such as partial sensing, discontinuous reception (DRX) and inter-UE coordination (IUC) technology).

[0058] The application areas of side-by-side communication are also gradually expanding. For example, although NR SL was originally developed to support V2X applications, the industry is increasingly keen to expand NR SL to more commercial use cases. For example, highly automated driving technology requires sharing a large amount of sensor information between vehicles.

[0059] The continuous expansion of sidelink communication applications is placing higher demands on NR SL. These requirements include two key requirements: increasing sidelink data rates and supporting more new carriers on the sidelink. Adding more new carriers expands the transmission bandwidth, further increasing the data rate.

[0060] According to 3GPP project RP-222806, the research on supporting new carriers in the NR SL evolution of Rel-18 focuses on sidelink beam management (SL BM). Sidelink beam management typically includes initial beam-pairing, beam maintenance, and beam failure recovery (BFR).

[0061] The relationship between PC5 / sidelink unicast link establishment and sidelink initial beam pairing includes the following three candidate procedures:

[0062] Alternative process 1: Perform initial beam pairing before establishing the sidelink unicast link between UE1 and UE2;

[0063] Alternative process 2: Perform initial beam pairing during the sidelink unicast link establishment process between UE1 and UE2;

[0064] Alternative process three: Initial beam pairing starts after the sidelink unicast link between UE1 and UE2 is established.

[0065] Among them, alternative process one can expand the transmission range of sidelink communications and improve resource utilization. Specifically, the advantage of performing initial beam pairing before the sidelink unicast link is established is that the paired beams can be fully utilized to expand the transmission range, so that sidelink unicast links can be established between more UEs, thereby providing more advanced business use case services. These UEs are, for example, high-performance audio-visual equipment in stadiums, large event venues, and concerts. Furthermore, the advantage of performing initial beam pairing before the sidelink unicast link is established is that the direct communication request (DCR) message used to establish the unicast link only needs to be sent on the paired beam through the physical sidelink shared channel (PSSCH), thereby avoiding the use of beam sweeping to send DCR multiple times on the resources occupied by multiple transmit beams, thereby significantly improving resource utilization efficiency.

[0066] For the reference signal used in Alternative Procedure 1, the 3GPP RAN1 meeting has agreed to use the SL synchronization signal / physical sidelink broadcast channel block (S-SS / PSBCH block, S-SSB) or a modified format based on S-SSB as an alternative solution. As an example, the operation process for performing initial beam pairing using the S-SSB as the reference signal in Alternative Procedure 1 can be as follows:

[0067] UE1 sends multiple S-SSBs using beam sweeping.

[0068] UE2 performs reference signal received power (RSRP) measurement on the sidelink synchronization signal (SLSS) and / or PSBCH, and UE2 determines the transmit beam of UE1 and the receive beam of UE2 based on the measured RSRP;

[0069] For the determined transmitting beam of UE1, UE2 reports the associated beam.

[0070] Traditional S-SSB design

[0071] In the traditional NR S-SSB design, S-SSB consists of the sidelink primary synchronization signal (S-PSS), the sidelink secondary synchronization signal (S-SSS) and the PSBCH. Typically, S-SSB occupies one time slot in the time domain. S-SSB uses the numerology configured by the SL bandwidth part (BWP), including subcarrier spacing and cyclic prefix (CP) length. In an SL BWP, the transmission of S-SSB cannot be frequency division multiplexed (FDM) with the transmission of other sidelink physical channels. Therefore, invalid S-SSB(s) transmission not only increases resource consumption, but also seriously affects the available resources of other physical SL channels / signals.

[0072] For ease of understanding, the structure of a time slot of S-SSB is exemplarily illustrated below in conjunction with Figure 2. Referring to Figure 2, in a time slot of S-SSB, there are S-PSS and S-SSS, PSBCH, and the last guard symbol, which occupy two symbols respectively. In the structure shown in Figure 2, in an S-SSB time slot of a normal CP, the first symbol (i.e., the first PSBCH symbol) can be used for automatic gain control (AGC), the second and third symbols are used to carry S-PSS, the fourth and fifth symbols are used to carry S-SSS, the last symbol is used as a guard symbol, and the other symbols are used to carry PSBCH.

[0073] As shown in Figure 2, the S-SSB spans 11 common resource blocks (Common RBs) in a SL BWP in the frequency domain, or 132 subcarriers. The S-PSS and S-SSS occupy 127 subcarriers. The frequency domain location of the S-SSB in the SL BWP is preconfigured or configured. Therefore, S-SSB-receiving UEs (including UE1) do not need to perform blind detection in the frequency domain to find the S-SSB.

[0074] The UE sends S-SSB to expand the coverage of the synchronization reference source. Specifically, in NR SL, the global navigation satellite system (GNSS), gNB / eNB and NR SL UE (i.e., synchronization reference UE, SyncRefUE) can all be used as the synchronization reference source for a UE. SyncRefUE can send synchronization information (e.g., S-SSB) to enable surrounding UEs to have the same timing reference.

[0075] In traditional S-SSB designs, one or more S-SSBs are transmitted in a fixed period (i.e., 160ms, 16 radio frames). The number of S-SSBs transmitted in an S-SSB period is preconfigured or configurable, depending on the subcarrier spacing (SCS) and frequency range, as shown in Table 1. Table 1 shows the number of S-SSBs transmitted in an S-SSB period.

[0076] Table 1

[0077] The distribution of multiple S-SSBs within a fixed period depends on two parameters: one is the slot offset from the start of the S-SSB period to the first S-SSB, and the other is the slot interval between two consecutive S-SSBs.

[0078] For ease of understanding, the following example illustrates the distribution of multiple S-SSBs within a fixed period, with reference to Figure 3. In the example of Figure 3, the fixed period, also known as the S-SSB period, is 16 radio frames. When 16 radio frames are grouped together, each period starts with the first time slot of the current group of radio frames and ends with the first time slot of the next group of radio frames.

[0079] In Figure 3, there are four S-SSBs within a fixed period. The time interval between the time slot of the first S-SSB and the start of the fixed period is the time offset. The time interval between two consecutive S-SSBs in Figure 3 is the time interval.

[0080] In the NR Uu interface, SSBs sent by a network device (e.g., a gNB) can be part of the initial access procedure. During the initial access procedure, the UE can detect the SSBs and identify the best SSB or the best beam between the gNB and the UE. The UE can then report the best SSB or the best beam pair via the physical random access channel (PRACH). During this procedure, the gNB can identify the corresponding UE and the best beam pair with the UE.

[0081] The traditional NR S-SSB structure is similar to the NR Uu SSB structure, but the traditional S-SSB is designed only for synchronization. That is, the sidelink synchronization signal identity (SL-SSID) carried by the traditional S-SSB through the S-PSS and S-SSS can only distinguish the synchronization source type. The synchronization source type includes whether it is within the cell / GNSS coverage or outside the cell / GNSS coverage, and whether the SyncRefUE is directly or indirectly synchronized to the synchronization source. Therefore, the traditional SL-SSID is not UE-specific and cannot be used to distinguish different UEs. In other words, by detecting S-SSBs, UE2 cannot identify whether multiple SSBs are from the same UE or multiple UEs, nor can it identify UE1 that sends the S-SSB from multiple UEs, so that UE2 cannot determine the optional beams that need to be reported and the exact number of optional beams.

[0082] A related technical solution proposes the use of an enhanced SL-SSID. This enhanced SL-SSID includes two parts: a UE-specific information indicator and a synchronization information indicator. For the synchronization information indicator, the current solution can be reused; for the UE-specific information indicator, it can be based on the source ID and / or destination ID.

[0083] However, this solution expands the indication range of SL-SSID, which inevitably requires redesigning the sequence generation of S-PSS and S-SSS. Modifying the standard is difficult and is not conducive to backward compatibility. In other words, it does not support UEs of NR Rel-16 and Rel-17.

[0084] In summary, for SLBM, how to perform initial beam pairing using S-SSB before establishing a sidelink unicast link is a technical problem that needs to be solved. Furthermore, how UE2 receiving the S-SSB can identify the transmitting UE through the S-SSB is also a technical problem that needs to be solved. Furthermore, how to better carry the UE identifier or source identifier in the S-SSB is also a technical problem that needs to be solved.

[0085] It should be understood that the above-mentioned problem that the receiving node cannot identify the sending node when initial beam pairing is performed based on S-SSB is only an example. The embodiments of the present application can be applied to scenarios where the sending node cannot be identified when beam management is performed based on any type of reference signal.

[0086] In order to solve the above problems, an embodiment of the present application proposes a method in a first node for wireless communication. Through this method, the first node determines a first side signal resource associated with the first node from multiple side signal resources based on first information, and sends a first side signal group on the first side signal resource. For the second node, it can be determined whether the side signal is sent by the first node based on the resource of the side signal. In other words, the present application introduces multiple side signal resources associated with multiple nodes to facilitate the receiving node (or second node) to identify the sending node (or first node), thereby effectively performing operations such as initial beam pairing.

[0087] It should be noted that the beam mentioned in the embodiments of the present application may include or be replaced by at least one of the following: beam, physical beam, logical beam, spatial filter, spatial parameter, spatial domain filter, spatial domain transmission filter, spatial domain reception filter, antenna port. The meanings of these expressions may be consistent, and the embodiments of the present application do not distinguish between them.

[0088] The following describes a detailed description of the method embodiment of the present application in conjunction with the accompanying drawings. Figure 4 is a schematic flow chart of a method for wireless communication in a first node provided in an embodiment of the present application. The method shown in Figure 4 includes steps S410 and S420. It should be understood that the method shown in Figure 4 can be performed by the first node.

[0089] In some implementations, the first node can be any of the user devices described above for sidewalk communication. For example, the first node can be a vehicle in V2X or a V2X infrastructure. In some implementations, the first node can be located within or outside the network coverage area. When within the network coverage area, the first node can perform sidewalk communication based on the configuration of the network device.

[0090] As an embodiment, the first node may be a network-controlled repeater (NCR).

[0091] As an embodiment, the first node may be a user equipment, for example, the user equipments 121 to 129 shown in FIG1 .

[0092] As an embodiment, the first node may be a relay, such as a relay terminal.

[0093] Referring to FIG. 4 , in step S410 , first information is received.

[0094] The first node can receive the first information in a variety of ways. In some embodiments, the first node can receive the first information via another node that interacts with it. The other node can be a network device or a user device other than the first node. In some embodiments, the first node can receive the first information via a higher layer of its own.

[0095] In some embodiments, the sender of the first information may be a communications device interacting with the first node. For example, the sender of the first information may be a network device providing services to the first node. This network device may also be referred to as a third node. For example, the third node sends the first information to the first node. For example, the sender of the first information may be another network-side device other than the third node.

[0096] As an embodiment, the sender of the first information is a base station. The base station can provide communication services for the area where the first node is located.

[0097] As an embodiment, the first information is configured by the network device (including gNB).

[0098] In some embodiments, the sender of the first information may be a higher layer corresponding to the first node. The higher layer may send the first information to a lower layer or a lower layer of the first node. For example, the first information may be sent layer by layer from the radio resource control (RRC) layer corresponding to the first node to the physical layer.

[0099] As an embodiment, the first information includes higher-layer information. The higher-layer information may be information about the first operation sent down from higher layers relative to the physical layer. For example, the first information may be RRC signaling, or the first information may be carried in RRC signaling. For another example, the first information may be a higher-layer configuration or pre-configuration.

[0100] As an embodiment, the first information includes an RRC layer signaling.

[0101] As an embodiment, the first information includes an RRC information element (IE). For example, the first information can be carried in the RRC IE.

[0102] As an embodiment, the first information may be an RRC IE (SL-SyncConfig), and for details, please refer to 3GPP TS38.331 6.3.5.

[0103] As an embodiment, the first information may be an RRC IE (SL-FreqConfig).

[0104] As an embodiment, the first information may be an RRC IE (SL-BWP-Config).

[0105] The first information is used to determine multiple sidelink signal resources. The multiple sidelink signal resources can be preconfigured time-frequency resources for transmitting one or more sidelink signals, time-frequency resources occupied by sidelink signals, or time-frequency resources used for sidelink signals. In some embodiments, the sidelink signals associated with the multiple sidelink signal resources may include multiple sidelink signal groups. Exemplarily, any sidelink signal resource from the multiple sidelink signal resources can be used for sidelink signals in one or more sidelink signal groups.

[0106] As an embodiment, the sidelink signal resources include time domain resources and / or frequency domain resources.

[0107] As an embodiment, the sidelink signal resource includes one or more resource elements (REs).

[0108] As an embodiment, the sidelink signal resource includes one or more time slots in the time domain.

[0109] As an embodiment, the sidelink signal resource includes one or more subcarriers in the frequency domain.

[0110] In one embodiment, the multiple sidelink signal resources are used for the multiple sidelink signal groups, respectively. The multiple sidelink signal groups can be multiple sidelink signal groups sent by multiple nodes, or multiple sidelink signal groups sent by a single node. The multiple sidelink signal resources can correspond one-to-one to the multiple sidelink signal groups, or they can not correspond one-to-one.

[0111] Exemplarily, multiple sidewalk signal resources may be used to send multiple sidewalk signal groups, or may be used to receive multiple sidewalk signal groups, which is not limited here.

[0112] As an embodiment, the multiple sidelink signal resources are respectively time-frequency resources occupied by the multiple sidelink signal groups. Exemplarily, the time-frequency resources occupied by the multiple sidelink signal groups are orthogonal.

[0113] As an embodiment, any sideline signal group among the multiple sideline signal groups includes at least one sideline signal. Any sideline signal group may include one or more sideline signals sent by any node.

[0114] As an embodiment, any side signal group among the plurality of side signal groups includes a plurality of side signals.

[0115] The multiple sidelink signal resources indicated by the first information can be used to send multiple sidelink signals. In some embodiments, multiple sidelink signal resources are used to send sidelink synchronization signal blocks. The sidelink synchronization signal block can be a sidelink synchronization broadcast signal block, and the sidelink synchronization signal block can be expressed as S-SSB (sidelink-synchronization signal block) or as S-SS / PSBCH block, which is not limited in this embodiment of the present application. The S-SSB in this article can be replaced by S-SS / PSBCH block. The sidelink synchronization signal block may include at least two of S-PSS, S-SSS and PSBCH. The sidelink synchronization signal block may include S-PSS and S-SSS. The sidelink synchronization signal block may not include PSBCH.

[0116] In some embodiments, a plurality of sidelink signal resources are used to transmit a sidelink channel state information-reference signal (SL CSI-RS).

[0117] As an embodiment, the first information is used to indicate multiple S-SSB resources.

[0118] As an embodiment, the first information is used to indicate multiple SL CSI-RS resources.

[0119] The first information may indicate the plurality of sidelink signal resources using various parameters. In some embodiments, the first information may include at least one of a transmission period, time allocations, and frequency domain locations. At least one of the transmission period, time allocations, and frequency domain locations is used to determine the plurality of sidelink signal resources.

[0120] The transmission period can be used to indicate the time period of the sidelink signal resource. Multiple transmission periods refer to different time domain lengths and / or time domain positions of the transmission periods. In some embodiments, multiple transmission periods can follow the design of NR SL or be newly designed according to resource usage requirements. For example, when the transmission period of the first S-SSB is determined according to the requirements of initial beam pairing and / or sidelink unicast link establishment and / or beam management, the design of the transmission period of the first S-SSB needs to be convenient for high-level signaling to indicate.

[0121] For example, any one of the multiple transmission cycles may be indicated using a designated time unit, which may be a time slot or a symbol, etc., which is not limited here.

[0122] As an embodiment, any one of the multiple transmission cycles includes a positive integer number of time slots.

[0123] For example, any one of the multiple sending cycles can be represented by a specified time length. The specified time length can be represented by M time units representing a time period. The time unit can be milliseconds.

[0124] As an embodiment, any one of the multiple sending cycles includes a positive integer number of milliseconds (ms).

[0125] As an embodiment, any one of the multiple sending cycles is equal to 160ms.

[0126] In some embodiments, multiple sidelink signal resources may correspond to one transmission cycle. To implement configuration of multiple sidelink signal resources within one transmission cycle, the transmission cycle may be extended. For example, one or more transmission cycles in the multiple transmission cycles may be greater than 160 ms.

[0127] For example, any one of the multiple sending cycles may be a specified number of T time units or a specified time length of T. The T may be a fixed value or a variable that changes according to a certain rule.

[0128] As an embodiment, any one of the multiple sending cycles is a constant.

[0129] As an embodiment, any one of the multiple sending cycles is variable.

[0130] In one embodiment, the multiple sidelink signal resources correspond to multiple transmission cycles. For example, the multiple sidelink signal resources may correspond to multiple different transmission cycles. In another example, any several of the multiple sidelink signal resources may correspond to the same transmission cycle. In another example, any one of the multiple sidelink signal resources may be distributed within two or more different transmission cycles.

[0131] As an embodiment, the first information indicates a plurality of S-SSB periods.

[0132] Time allocation can be used to indicate the time domain location of sidelink signal resources. Time allocation can be indicated by multiple parameters. Multiple time allocations refer to one or more different parameters in the time allocation. In some embodiments, the time allocation of sidelink signal resources may include parameters such as time offset, time interval, and the number of resources within a transmission cycle. Taking the resources corresponding to S-SSB in Figure 3 as an example, the time offset, time interval, and number of resources constitute the time allocation of S-SSB resources. The number of resources is 4.

[0133] As an embodiment, the number of resources in a sending cycle is greater than or equal to 1.

[0134] As an embodiment, the number of resources in a sending cycle can be any one of 1, 2, 4, 8, 16, 32, and 64.

[0135] As an embodiment, the value of the time offset may be any number between 0 and 1279.

[0136] As an embodiment, the value of the time interval may be any number from 0 to 639.

[0137] As an embodiment, the multiple sidelink signal resources each correspond to multiple time allocations. For example, the multiple sidelink signal resources may each correspond to multiple different time allocations. The multiple different time allocations may differ in at least one of the following parameters: time offset, time interval, and number of resources. For another example, any number of the multiple sidelink signal resources may correspond to the same time allocation. This will be explained below with reference to Figures 8 and 9 for exemplary purposes.

[0138] As an example, the first information may indicate multiple S-SSB time allocations, where each S-SSB time allocation corresponds to three parameters: the number of S-SSBs in an S-SSB period (sl-NumSSB-WithinPeriod), a time slot offset (sl-TimeOffsetSSB), and a time slot interval (sl-TimeInterval).

[0139] The frequency domain location can be used to indicate the frequency domain occupied by the sidewalk signal resource. In some embodiments, the frequency domain location of the sidewalk signal resource can be indicated by at least two parameters: the starting location, the ending location, and the frequency domain range. In some embodiments, the frequency domain location of the sidewalk signal resource can be continuous or intermittent.

[0140] As an embodiment, the frequency domain location may be one or more RBs in a SL BWP.

[0141] As an embodiment, the frequency domain location may be one or more subcarriers.

[0142] In some embodiments, the frequency domain position of any side signal resource among the multiple side signal resources includes the absolute frequency domain position of the side signal resource, or the frequency offset of the side signal resource relative to a reference frequency domain position. Exemplarily, the frequency domain position of the side signal resource can be indicated by an absolute frequency domain position. For example, the frequency domain position can be expressed as a frequency band or a frequency point. Exemplarily, the frequency domain position of the side signal resource can be indicated by a relative frequency domain position. The relative frequency domain position can be determined based on any reference frequency domain position. For example, the frequency domain position can be the value of the sum of the starting frequency point and the frequency offset of the frequency band corresponding to the side signal. For another example, the frequency domain position can be the value of the subtraction of the ending frequency point and the frequency offset of the frequency band corresponding to the side signal.

[0143] As an embodiment, the reference frequency domain position is an absolute frequency domain position.

[0144] As an embodiment, the frequency offset is a parameter such as one or more subcarriers or RBs, which is not limited here.

[0145] As an embodiment, the first information indicates the frequency domain positions of multiple S-SSBs, or multiple frequency offsets from an absolute frequency domain position. The absolute frequency domain position can be used as a reference frequency domain position.

[0146] In one embodiment, the multiple sidelink signal resources correspond to multiple frequency domain locations. For example, the multiple sidelink signal resources may correspond to multiple different frequency domain locations. In another example, any several of the multiple sidelink signal resources may correspond to the same frequency domain location. In another example, any one of the multiple sidelink signal resources may be distributed within two or more different frequency domain locations.

[0147] When the sidelink signal is S-SSB, the multiple sidelink signal resources are multiple S-SSB resources. Each S-SSB resource can correspond to different S-SSB period, different time slot offset, different time slot interval, different frequency domain position and other parameters.

[0148] In some embodiments, the multiple sidewalk signal resources may be indicated by multiple parameters. For example, one or more parameters of the sidewalk signal resources may be used as indexes of the multiple sidewalk signal resources for easy indication.

[0149] In one embodiment, the multiple sidelink signal resources are configured for at least one of sidelink initial beam pairing, sidelink unicast link establishment, and sidelink beam management. The sidelink signal resources are configured for at least one of three operations to improve the efficiency of sidelink communications. These three operations are described below with reference to Figures 5 through 7.

[0150] Continuing with FIG4 , in step S420 , a first sidelink signal group is transmitted on a first sidelink signal resource.

[0151] After determining multiple sidelink signal resources, the first node may select a first sidelink signal resource and transmit a sidelink signal. In other words, the first sidelink signal resource is a resource associated with the first node among the multiple sidelink signal resources. In some embodiments, the first node may select the first sidelink signal resource corresponding to the resource based on an identifier among the multiple sidelink signal resources.

[0152] Multiple sidewalk signal resources can be associated with multiple first-class identifiers to facilitate multiple nodes in determining corresponding sidewalk signal resources. Multiple sidewalk signal resources can be associated with multiple first-class identifiers, which can alternatively be represented by multiple sidewalk signal resources corresponding to multiple first-class identifiers, or multiple sidewalk signal resources can be distinguished by multiple first-class identifiers.

[0153] As an embodiment, the multiple first-category identifiers are respectively used to determine the multiple sidelink signal resources.

[0154] To identify multiple sidewalk signal resources, the multiple first-category identifiers may include multiple identifiers. In some embodiments, the multiple identifiers may correspond one-to-one with the multiple sidewalk signal resources. For example, when the multiple sidewalk signal resources include multiple types of sidewalk signal resources, the multiple identifiers may correspond one-to-one with the multiple types of sidewalk signal resources. The multiple types of sidewalk signal resources may be classified based on one or more parameters including transmission period, time allocation, and time domain location. In some embodiments, one of the multiple identifiers corresponds to multiple sidewalk signal resources.

[0155] The association of multiple first-category identifiers with multiple sidewalk signal resources can be indicated by second information. In other words, the second information is used to indicate the association of the multiple sidewalk signal resources with the multiple first-category identifiers. In some embodiments, the first node can receive the second information to distinguish the multiple sidewalk signal resources by the multiple first-category identifiers.

[0156] The various ways in which the first node receives the second information can refer to the various ways in which the first information is received, and are not described in detail here.

[0157] In one embodiment, the second information is used to indicate an association relationship between the multiple sidelink signal resources and the multiple first-category identifiers. For example, the second information may indicate a correspondence between the indexes of the multiple sidelink signal resources and the multiple first-category identifiers. In another example, the second information may indicate a method for determining the multiple first-category identifiers based on the time-frequency positions of the multiple sidelink signal resources.

[0158] As an embodiment, the second information includes a higher layer signaling.

[0159] As an embodiment, the second information includes an RRC layer signaling.

[0160] As an embodiment, the second information includes an RRC IE.

[0161] The second node may receive the first information and the second information in any of a variety of ways as the first node.

[0162] In some embodiments, multiple sidelink signal resources may be associated with multiple first-category identifiers by mapping. As an embodiment, the second information indicates a mapping relationship between multiple S-SSB resources and L1 Source IDs or part of L1 Source IDs.

[0163] As an embodiment, the multiple sidelink signal resources are mapped to the multiple first-class identifiers. Taking S-SSB resources as an example, when the multiple first-class identifiers are source identifiers of layer 1 (L1), the multiple S-SSB resources are mapped to layer 1 source identifiers Source IDs or partial L1 Source IDs. The source identifier can be represented by 8 bits. The first node can select the S-SSB resource for sending the S-SSB by its source identifier. The second node can distinguish L1 Source IDs or partial L1 Source IDs by S-SSBs detected on different resources.

[0164] As an embodiment, the association of the multiple side signal resources with the multiple first-category identifiers includes the multiple side signal resources corresponding to the multiple first-category identifiers. The multiple first-category identifiers may be associated with indication parameters of the multiple side signal resources. For example, the multiple first-category identifiers may correspond to the time domain positions of the multiple side signal resources.

[0165] As an embodiment, the multiple sidelink signal resources correspond one-to-one to the multiple first-class identifiers. For each of the multiple sidelink signal resources, the first-class identifier is unique. In this scenario, the transmitting node and the receiving node identify a corresponding sidelink signal resource through a first-class identifier.

[0166] In one embodiment, at least one of the multiple sidelink signal resources is associated with one of the multiple first-category identifiers. For example, the indication parameters of two sidelink signal resources among the multiple sidelink signal resources may be associated with one of the multiple first-category identifiers, and the two sidelink signal resources may be identified by this identifier. For example, a single L1 Source ID may be associated with multiple S-SSB time allocations.

[0167] As an embodiment, one of the plurality of side signal resources is associated with at least one first-category identifier among the plurality of first-category identifiers. For example, one of the plurality of side signal resources may be associated with two of the plurality of first-category identifiers, and the side signal resource may be identified by either of the two identifiers.

[0168] Multiple first-class identifiers can also be used to identify multiple nodes. Multiple nodes can correspond to multiple sidelink signal resources using multiple first-class identifiers. Any of the multiple nodes can use the first-class identifier to determine one or more corresponding sidelink signal resources from the multiple sidelink signal resources.

[0169] In one embodiment, the multiple first-class identifiers are used to identify multiple nodes, any of which is a UE. Exemplarily, the first-class identifier can be used to distinguish two or more UEs in a sidelink. For example, two UEs correspond to one first-class identifier, and other nodes determine which is the sending node based on the first-class identifier in the information.

[0170] As an embodiment, the multiple first-class identifiers correspond to the multiple nodes. The multiple first-class identifiers can correspond to the multiple nodes in a multiple continuous or intermittent identification manner. For example, when the multiple first-class identifiers are serial numbers, the serial numbers of different nodes can be continuous.

[0171] As an embodiment, the plurality of first-type identifiers correspond one-to-one to the plurality of nodes. For each node in the communication system, the first-type identifier is unique and can be used for identification by other communication devices.

[0172] As an embodiment, at least one of the plurality of first-class identifiers is associated with one of the plurality of nodes. For example, one of the plurality of nodes may be associated with two of the plurality of first-class identifiers. Other nodes may identify the node through either of the two identifiers.

[0173] As an embodiment, one of the plurality of first-class identifiers is associated with at least one of the plurality of nodes. For example, two nodes of the plurality of nodes may be associated with one of the plurality of first-class identifiers. Other nodes may identify the two nodes through this identifier.

[0174] In one embodiment, the first node is one of the multiple nodes. The first node may be any one of the multiple nodes. When the first information indicates multiple sidelink signal resources for multiple nodes to transmit sidelink signals, the first node is any one of the multiple nodes that needs to transmit sidelink signals.

[0175] As an embodiment, the multiple nodes include the first node.

[0176] The second node may be a node with which the first node hopes to perform initial beam pairing, sidelink unicast link establishment, or sidelink beam management, or may be a node that receives a sidelink signal sent by the first node.

[0177] As an embodiment, the multiple nodes include the second node.

[0178] The plurality of first-category identifiers may include a first identifier associated with a first node. The first identifier is associated with the first node, and alternatively, the first node corresponds to the first identifier, or the first node can be identified using the first identifier. As an embodiment, the first identifier is used to identify the first node.

[0179] In some embodiments, the multiple first-category identifiers may identify multiple nodes in multiple ways. Taking the first identifier as an example, the first identifier may include multiple identifiers related to the first node or the sidelink signal sent by the first node.

[0180] Exemplarily, the multiple first-type identifiers may be node identifiers or beam indicators. When the first-type identifier is a beam indicator, the receiving node may determine useful beam information by receiving the sidelink signal.

[0181] As an embodiment, the first identifier includes a source identity (Source ID). The source identity of the sidewalk signal in the first identifier can facilitate a node receiving the sidewalk signal to identify the sending node.

[0182] As an embodiment, the first identifier includes a layer 1 source identity (L1 Source ID). For example, the first node can find the associated S-SSB resource based on its own L1 Source ID, and send multiple beams on the S-SSB resource by beam scanning. The second node detects the S-SSB, determines the L1 Source ID of the UE that sends the S-SSB based on the resources occupied by the detected S-SSB and the mapping relationship between the S-SSB resources and the L1 Source ID, thereby judging UE1.

[0183] As an embodiment, the first identifier includes a layer 2 source identifier (layer 2 source ID, L2 Source ID).

[0184] The first node may be sending a sidelink signal to one or more identified nodes. For example, when the first node is performing unicast or multicast communication, the node receiving the sidelink signal may have already been in sidelink communication with the first node, or may have established sidelink communication with the first node via the sidelink signal. In this scenario, the first identifier may also be used to identify the node communicating with the first node.

[0185] In one embodiment, the first identifier is used to identify a second node. The second node may be any node communicating with the first node. In some embodiments, the second node may be one of a plurality of nodes. In some embodiments, the second node may not be one of the plurality of nodes. The second node may determine the association between the plurality of sidelink signal resources and the first type identifier in various ways, and determine the transmitting node based on the received sidelink signal.

[0186] As an embodiment, the first identifier includes a destination identity (Destination ID).

[0187] As an embodiment, the first identifier includes a layer 1 destination ID (layer 1 destination ID, L1 Destination ID).

[0188] As an embodiment, the first identifier includes a layer 2 destination ID (L2 Destination ID).

[0189] The first node can identify a first sidewalk signal resource from among multiple sidewalk signal resources using a first identifier. As described above, multiple first-category identifiers are associated with multiple sidewalk signal resources. The first identifier is one of the multiple first-category identifiers, and therefore, the first identifier corresponds to one or more sidewalk signal resources from the multiple sidewalk signal resources. The resource corresponding to the first identifier is the first sidewalk signal resource.

[0190] As an embodiment, the first identifier is used to determine the first sidelink signal resource. Exemplarily, the first identifier can be used by the first node to select the first sidelink signal resource corresponding thereto.

[0191] The first node sends a first sideways signal group on a first sideways signal resource. For a second node receiving sideways signals, if the second node receives one or more sideways signals in the first sideways signal group, it determines that the sending node is the first node based on the resources occupied by the sideways signals.

[0192] As can be seen from the foregoing, the first sideways signal resource is one of a plurality of sideways signal resources. The plurality of sideways signal resources are used for a plurality of sideways signal groups, and therefore, the first sideways signal group is one of the plurality of sideways signal groups.

[0193] In one embodiment, the plurality of sidelink signal resources are respectively used for a plurality of sidelink signal groups, and the first sidelink signal group is one of the plurality of sidelink signal groups. When the plurality of sidelink signal resources are respectively used for a plurality of sidelink signal groups, the plurality of sidelink signal resources correspond one-to-one to the plurality of sidelink signal groups. The first sidelink signal group corresponds to the first sidelink signal resource.

[0194] As an embodiment, the plurality of sidelink signal resources are respectively used to send a plurality of sidelink signal groups, and the first sidelink signal group is one of the plurality of sidelink signal groups.

[0195] As an embodiment, the plurality of sidelink signal resources are respectively used to receive a plurality of sidelink signal groups, and the first sidelink signal group is one of the plurality of sidelink signal groups.

[0196] As mentioned above, any side signal group among the plurality of side signal groups includes at least one side signal. The first side signal group is one of the plurality of side signal groups.

[0197] As an embodiment, the first sideline signal group includes at least one sideline signal, and any sideline signal in the first sideline signal group is a sideline synchronization signal block.

[0198] As an embodiment, the first side signal group includes multiple side signals.

[0199] Exemplarily, the sideline signal in the first sideline signal group may be S-SSB.

[0200] As an embodiment, any sideline signal in the first sideline signal group is S-SSB in legacy NR Rel-16 or Rel-17.

[0201] As an embodiment, any sideline signal in the first sideline signal group is a new S-SSB, which is different from the S-SSB in the traditional NR Rel-16 and Rel-17. The new S-SSB adopts an improved format of S-SSB.

[0202] As an embodiment, any sideline signal in the first sideline signal group includes S-PSS.

[0203] As an embodiment, any sideline signal in the first sideline signal group includes S-SSS.

[0204] As an embodiment, at least one sideline signal in the first sideline signal group includes S-SSB.

[0205] As an embodiment, the first side signal group includes at least one S-SSB.

[0206] Exemplarily, the sidelink signals in the first sidelink signal group may be SL CSI-RS.

[0207] As an embodiment, any sidelink signal in the first sidelink signal group is a SL CSI-RS.

[0208] As an embodiment, at least one sidelink signal in the first sidelink signal group includes a SL CSI-RS.

[0209] As an embodiment, the first sidelink signal group includes at least one SL CSI-RS.

[0210] In some embodiments, the first sidewalk signal group is used for at least one of sidewalk initial beam pairing, sidewalk unicast link establishment, and sidewalk beam management.

[0211] As an embodiment, the first sidewalk signal group is related to at least one of sidewalk initial beam pairing, sidewalk unicast link establishment and sidewalk beam management.

[0212] Exemplarily, the first node performs sideways initial beam pairing with other nodes by sending a first sideways signal group. The sideways initial beam pairing is used to match the transmit beam and receive beam of the first node with the other nodes to determine the optimal beam pair. The other node is, for example, the second node described above.

[0213] As an embodiment, the process of side-by-side initial beam pairing can refer to the pairing process of other communication systems (for example, NR), and the relevant process can also be improved according to the characteristics of the side-by-side communication system.

[0214] As an embodiment, the process of the side-by-side initial beam pairing includes two processes: coarse beam pairing and fine beam pairing.

[0215] For ease of understanding, the initial beam pairing process including coarse pairing and fine pairing is exemplarily described below with reference to Figure 5. As shown in Figure 5, the sideline receive beam of UE1 is initially paired with the sideline transmit beam of UE2.

[0216] 5 , in step S510 , a rough pairing is completed between UE2 transmitting beam A and UE1 receiving beam 2 .

[0217] In step S520, UE1 uses three narrower beams, 2-1, 2-2, and 2-3, to receive the signal transmitted by beam A, perform measurements, and perform refined pairing. UE1 configures three narrow beams in beam 2, and UE2 transmits signals multiple times.

[0218] Subsequently, UE1 selects a narrow beam as a receiving beam for UE2's transmitting beam A based on the measurement result.

[0219] As an embodiment, the initial beam pairing process includes coarse beam pairing.

[0220] For ease of understanding, the following illustrative example illustrates the initial beam pairing process, including coarse pairing, with reference to Figure 6. As shown in Figure 6, UE1's sideways transmit beam is initially paired with UE2's sideways receive beam. Referring to Figure 6, UE1 transmits four beams using beam scanning. UE2 measures each of UE1's four transmit beams using two receive beams. Based on the measurement results, UE2 determines the matching UE1 transmit beam and UE2 receive beam and notifies UE1 of the matching pair.

[0221] Exemplarily, the first node establishes a sidelink unicast link with another node by sending a first sidelink signal group. The other node is a user equipment or a relay with which the first node desires to conduct sidelink communication. The other node is, for example, a second node.

[0222] For ease of understanding, the following describes an implementation process of establishing a sidelink unicast link by taking UE1 and UE2 in FIG. 7 as an example.

[0223] 7 , in step S710, UE1 sends a DCR to UE2. By sending the DCR, UE1 requests UE2 to establish a sidelink unicast link.

[0224] In step S720, UE2 feeds back a direct communication accept to UE1. According to the feedback from UE2, UE1 and UE2 complete the process of establishing the sidelink unicast link.

[0225] In some embodiments, the sidewalk unicast link establishment process may include initial beam pairing. For example, when the initial beam pairing is performed before the unicast link is established, the sidewalk unicast link establishment process may be considered to include performing the initial beam pairing.

[0226] Exemplarily, the first node performs sidewalk beam management with other nodes through the first sidewalk signal group. As described above, sidewalk beam management includes processes such as initial beam pairing, beam maintenance, and beam failure recovery. Multiple processes in sidewalk beam management can enable the first node to perform stable sidewalk communication within a larger link range. Among them, processes such as beam maintenance and beam failure recovery can refer to the implementation processes of other communication systems (e.g., NR), and the relevant processes can also be improved according to the characteristics of the sidewalk communication system.

[0227] In some embodiments, not all sidelink signal groups require preconfigured sidelink signal resources. For example, the number of UEs supporting S-SSB-based initial beam pairing is limited, and not all L1 Source IDs need to be associated with at least one S-SSB. Typically, only the L1 Source IDs of UEs supporting S-SSB-based initial beam pairing are mapped to S-SSB resources.

[0228] In some embodiments, the first sidelink signal group includes at least one sidelink synchronization signal block, the node corresponding to the first type of identifier supports sidelink initial beam pairing and / or sidelink unicast link establishment and / or sidelink beam management based on the sidelink synchronization signal block, or the at least one sidelink synchronization signal block occupies the first type of resources, or the resources of the first sidelink signal group are associated with the first type of identifier.

[0229] As an embodiment, multiple nodes corresponding to multiple first-category identifiers support S-SSB-based sidewalk initial beam pairing and / or sidewalk unicast link establishment and / or sidewalk beam management.

[0230] As an embodiment, S-SSBs sent or received by multiple nodes corresponding to multiple first-class identifiers occupy first-class resources. The first-class resources are different from the resources occupied by traditional S-SSBs used for synchronization. In other words, the first-class resources are configured separately from the resources used for synchronization.

[0231] As an embodiment, multiple side signal resources used to send or receive S-SSB are associated with the first type of identifier, or carry the first type of identifier, or are mapped to the first type of identifier.

[0232] As shown in Figure 4, a first node can identify a first sidelink signal resource from multiple sidelink signal resources using a first identifier. The first sidelink signal resource can be used to send a first sidelink signal group. A second node that receives one or more sidelink signals of the first sidelink signal group can determine that the sending node of the sidelink signal is the first node based on the resources occupied by the sidelink signal or the identifier corresponding to the occupied resource. This allows the second node to identify the first node and perform operations such as initial beam pairing, sidelink unicast linking, or beam management with the first node.

[0233] As mentioned above, multiple sidelink signal resources are used for multiple sidelink signal groups. Because any sidelink signal group within the multiple sidelink signal groups includes one or more sidelink signals, any sidelink signal resource within the multiple sidelink signal resources may include one or more sidelink signal sub-resources. When any sidelink signal resource includes multiple sidelink signal sub-resources, the multiple sidelink signal sub-resources may be used to transmit multiple sidelink signals within any sidelink signal group.

[0234] As an embodiment, the sidelink signal sub-resources include time domain resources and / or frequency domain resources.

[0235] As an embodiment, the sidelink signal sub-resource includes one or more REs.

[0236] As an embodiment, the sidelink signal sub-resource includes one or more symbols in the time domain.

[0237] As an embodiment, the sidelink signal sub-resource includes one or more sub-carriers in the frequency domain.

[0238] In some embodiments, any of the multiple sidelink signal resources includes multiple sidelink signal sub-resources, and the multiple sidelink signal sub-resources correspond to at least one of the same transmission period, the same time allocation, and the same frequency domain location. Exemplarily, the resource configuration parameters corresponding to the multiple sidelink signal sub-resources in any of the sidelink signal resources are identical to facilitate indication. For example, the multiple sidelink signal resources correspond to the same time offset and time interval.

[0239] As an embodiment, the multiple sidelink signal sub-resources included in any sidelink signal resource among the multiple sidelink signal resources are used for a sidelink signal group.

[0240] As an embodiment, any sidelink signal resource among the plurality of sidelink signal resources includes a plurality of sidelink signal sub-resources and is used to transmit a sidelink signal group.

[0241] As an embodiment, the first information may include at least one of the transmission period, time allocation, and frequency domain position corresponding to the multiple sidelink signal sub-resources, so as to indicate the multiple sidelink signal sub-resources.

[0242] As an embodiment, the multiple sidelink signal sub-resources are orthogonal in the time domain. The multiple sidelink signal resources can be orthogonalized by different time allocations or frequency domain positions, so as to be used for simultaneous transmission or reception of multiple sidelink signals.

[0243] In some embodiments, the first information includes multiple time allocations, and any one of the multiple time allocations is used to indicate at least one of the time offset of a side signal resource among multiple side signal resources, the time interval of a side signal resource among multiple side signal resources, and the number of side signal sub-resources included in a side signal resource among multiple side signal resources.

[0244] As an embodiment, the first information includes multiple time allocations, and any one of the multiple time allocations is used to indicate one of the multiple sidelink signal resources. That is, the first information can indicate multiple sidelink signal resources respectively through multiple time allocations.

[0245] As an embodiment, any of the multiple time allocations includes a time offset, a time interval, and the number of sidelink signal sub-resources, wherein the time offset and time interval can be any of the numbers mentioned above or newly designed parameters for different operations.

[0246] As an embodiment, the time offset included in any time allocation among the multiple time allocations is the time offset of the first sidelink signal sub-resource among the multiple sidelink signal sub-resources included in a sidelink signal resource among the multiple sidelink signal resources.

[0247] In one embodiment, the first sidelink signal sub-resource is the first sidelink signal sub-resource in the time domain among the multiple sidelink signal sub-resources. Exemplarily, the multiple sidelink signal sub-resources are arranged in chronological order in the time domain. The first sidelink signal sub-resource among the multiple sidelink signal resources is the sidelink signal sub-resource that is the earliest in time.

[0248] In one embodiment, the time offset of a first sidelink signal sub-resource among the multiple sidelink signal sub-resources is a time offset between the first sidelink signal sub-resource among the multiple sidelink signal sub-resources and the start of a transmission period to which the multiple sidelink signal sub-resources belong. For example, when multiple sidelink signal sub-resources correspond to the same transmission period, the time offset may be an offset between the time domain position of the first sidelink signal sub-resource and the start position of the transmission period.

[0249] The time offset can be expressed by various time units, such as time slots, symbols, etc.

[0250] As an embodiment, the time offset of the first sidelink signal sub-resource among the multiple sidelink signal sub-resources includes a positive integer number of time slots.

[0251] As an embodiment, the time offset of the first sidelink signal sub-resource among the multiple sidelink signal sub-resources includes a positive integer number of sidelink time slots.

[0252] In one embodiment, the time interval included in any one of the multiple time allocations is the time interval between any two consecutive sidewalk signal sub-resources among the multiple sidewalk signal sub-resources included in one of the multiple sidewalk signal resources. Exemplarily, the interval between any two sidewalk signal sub-resources among the multiple sidewalk signal sub-resources is a positive integer multiple of the time interval.

[0253] As an embodiment, the two consecutive side signal sub-resources are any two consecutive side signal sub-resources in the time domain among the multiple side signal sub-resources. For example, the two consecutive side signal sub-resources can be the first side signal sub-resource and the second side signal sub-resource in the time domain, or the second and the third side signal sub-resource, and so on.

[0254] The time interval can also be represented by various time units, such as time slots, symbols, etc.

[0255] As an embodiment, the time interval between two consecutive sidelink signal sub-resources among the plurality of sidelink signal sub-resources includes a positive integer number of time slots.

[0256] As an embodiment, the time interval between two consecutive sidelink signal sub-resources among the plurality of sidelink signal sub-resources includes a positive integer number of sidelink time slots.

[0257] In one embodiment, the number of sidelink signal sub-resources included in any one of the multiple time allocations is the number of all sidelink signal sub-resources included in one of the multiple sidelink signal resources. Exemplarily, one sidelink signal resource corresponds to one transmission cycle, and the number of sidelink signal resources within the time allocation may be the number of all sidelink signal sub-resources within one cycle.

[0258] As an embodiment, the number of the sidelink signal sub-resources is the number of all sidelink signal sub-resources in the time domain among the multiple sidelink signal sub-resources.

[0259] The first information may include multiple time allocations. Any of the multiple time allocations may be used to indicate multiple sidelink signal sub-resources in any sidelink signal resource. Exemplarily, three parameters in any time allocation are used to determine the time domain location of each of the multiple sidelink signal sub-resources. Exemplarily, at least one of the three parameters of the time allocation is used to determine the multiple sidelink signal resources. For example, if the multiple time allocations for the multiple sidelink signal resources differ only in time offset, the time offset may be used to indicate the multiple sidelink signal sub-resources in each sidelink signal resource.

[0260] As an embodiment, any one of the multiple time allocations is used to indicate multiple side signal sub-resources included in a side signal resource among the multiple side signal resources, and at least one of the time offset of the first side signal sub-resource among the multiple side signal sub-resources, the time interval between two consecutive side signal sub-resources among the multiple side signal sub-resources, and the number of side signal sub-resources among the multiple side signal sub-resources is used to determine the multiple side signal sub-resources.

[0261] As an embodiment, any one of the multiple time allocations is used to indicate multiple sidelink signal sub-resources included in one sidelink signal resource among the multiple sidelink signal resources.

[0262] As an embodiment, at least one of the time offset of the first side signal sub-resource among multiple side signal sub-resources, the time interval between two consecutive side signal sub-resources among the multiple side signal sub-resources, and the number of side signal sub-resources among the multiple side signal sub-resources is used to determine the multiple side signal sub-resources.

[0263] In some embodiments, at least two of the multiple sidelink signal resources correspond to the same transmission period, the at least two sidelink signal resources have different time allocations, and / or the at least two sidelink signal resources have different frequency domain locations. As previously mentioned, multiple sidelink signal resources can be configured in a transmission period, and the multiple sidelink signal resources correspond to the same transmission period. For example, the S-SSB period can be expanded to support the mapping of more L1 Source IDs.

[0264] As an embodiment, the different time allocations of at least two sidelink signal resources corresponding to the same transmission period include at least one difference among a time offset, a time interval, and a number of sidelink signal sub-resources.

[0265] In one embodiment, at least two sidelink signal resources corresponding to the same transmission period have different time allocations, including different time offsets, to ensure that the first sidelink signal sub-resources in the two sidelink signal resources do not overlap. In this scenario, the time interval and the number of sidelink signal sub-resources in the time allocation can be the same or different.

[0266] As one implementation of the above embodiment, at least two sidewalk signal resources with different time offsets within the same transmission cycle are independent in time domain location. That is, within the same transmission cycle, the time periods of at least two sidewalk signal resources do not overlap, which helps reduce mutual interference between sidewalk signals from different nodes. This will be illustrated below with reference to Figure 8.

[0267] As one implementation of the above embodiment, at least two sidelink signal resources with different time offsets within the same transmission cycle interact in time domain location. That is, within the same transmission cycle, the time periods of at least two sidelink signal resources overlap, enabling more efficient resource utilization. This will be illustrated below with reference to Figure 9.

[0268] As an embodiment, at least two sidelink signal resources corresponding to the same transmission period have different time allocations, including the same time offset and different time intervals. In this scenario, the first sidelink signal sub-resources in the two sidelink signal resources can correspond to different frequency domain positions to avoid resource overlap.

[0269] As an embodiment, the time allocation of at least two sidelink signal resources corresponding to the same transmission period is different, including different time offsets and time intervals. In this scenario, the time interval and the number of sidelink signal sub-resources of the at least two sidelink signal resources should meet the requirement that all sidelink signal sub-resources of the at least two sidelink signal resources are orthogonal.

[0270] As an embodiment, when at least two sidewalk signal resources among the multiple sidewalk signal resources correspond to the same transmission period, all sidewalk signal sub-resources in the at least two sidewalk signal resources do not overlap.

[0271] The above describes various designs for sidelink signal resources including multiple sidelink signal sub-resources. For ease of understanding, the following illustrates sidelink signal resources using two possible implementations shown in Figures 8 and 9. As shown in Figures 8 and 9, these time-frequency resources are used for transmitting or receiving S-SSB.

[0272] Referring to Figure 8 , a transmission cycle includes N sidelink signal resources, where N > 1. The N sidelink signal resources are sidelink signal resource 801, sidelink signal resource 802, through sidelink signal resource 80N. As shown in Figure 8 , each sidelink signal resource includes four sidelink signal sub-resources. The N sidelink signal resources have different time offsets but the same time interval.

[0273] In Figure 8 , N sidelink signal resources correspond to N L1 source identifiers. Sidelink signal resource 801 corresponds to L1 source ID #1, sidelink signal resource 802 corresponds to L1 source ID #2, and so on. Sidelink signal resource 80N corresponds to L1 source ID #N. As previously described, the node corresponding to L1 source ID #1 can send S-SSBs on sidelink signal resource 801. A node receiving an S-SSB on sidelink signal resource 801 can determine, based on the resource, that the sending node is the node corresponding to L1 source ID #1.

[0274] Continuing with Figure 8 , the N sidelink signal resources correspond to the same transmission cycle. The time periods for sidelink signal resource 801, 802, and 80N are independent of each other. On the time axis shown in Figure 9 , the N sequential time periods correspond to the N sidelink signal resources. Therefore, the four sidelink signal sub-resources of sidelink signal resource 801 are in the first time period in the time domain, the four sidelink signal sub-resources of sidelink signal resource 802 are in the adjacent second time period, followed by the sequential time periods for sidelink signal resources 803 through 80N.

[0275] Referring to Figure 9 , a transmission cycle in Figure 9 also includes N sidelink signal resources, namely sidelink signal resource 901, sidelink signal resource 902, through sidelink signal resource 90N. Similarly, each sidelink signal resource includes four sidelink signal sub-resources. The N sidelink signal resources have different time offsets but the same time interval.

[0276] In Figure 9, N side signal resources correspond to N L1 source identifiers. Side signal resource 901 corresponds to L1 source ID#1, side signal resource 902 corresponds to L1 source ID#2, and so on. Side signal resource 90N corresponds to L1 source ID#N.

[0277] Unlike Figure 8 , the time periods of the N sidewalk signal resources in Figure 9 overlap. On the timeline shown in Figure 9 , the N first sidewalk signal sub-resources of the N sidewalk signal resources are configured first, followed by the N second sidewalk signal sub-resources, the N third sidewalk signal sub-resources, and the N fourth sidewalk signal sub-resources of the N sidewalk signal resources.

[0278] The method embodiment of the present application is described in detail above in conjunction with Figures 1 to 9 . The device embodiment of the present application is described in detail below in conjunction with Figures 10 to 14 . It should be understood that the description of the method embodiment corresponds to the description of the device embodiment. Therefore, for portions not described in detail, reference can be made to the above method embodiment.

[0279] FIG10 is a diagram of a first node for wireless communication provided in an embodiment of the present application. As shown in FIG10 , the first node 1000 includes a first receiver 1010 and a first transmitter 1020 .

[0280] The first receiver 1010 may be configured to receive first information, where the first information is used to determine a plurality of sidelink signal resources.

[0281] The first transmitter 1020 can be used to send a first side signal group on a first side signal resource; wherein, the multiple side signal resources are associated with multiple first-class identifiers, the first identifier is one of the multiple first-class identifiers, the first identifier is related to the first node, and the first identifier is used to determine the first side signal resource from the multiple side signal resources.

[0282] As an embodiment, the first sidewalk signal group is used for at least one of sidewalk initial beam pairing, sidewalk unicast link establishment, and sidewalk beam management.

[0283] As an embodiment, the first sideline signal group includes at least one sideline signal, and any sideline signal in the first sideline signal group is a sideline synchronization signal block.

[0284] As an embodiment, the first node 1000 further includes a second receiver, which is configured to receive second information; wherein the second information is used to indicate that the multiple sidelink signal resources are associated with the multiple first-category identifiers.

[0285] As an embodiment, the first information includes at least one of a transmission period, a time allocation and a frequency domain position, and at least one of the transmission period, the time allocation and the frequency domain position is used to determine the multiple side signal resources.

[0286] As an embodiment, any sidelink signal resource among the multiple sidelink signal resources includes multiple sidelink signal sub-resources, and the multiple sidelink signal sub-resources correspond to at least one of the same transmission period, the same time allocation, and the same frequency domain position.

[0287] As an embodiment, the first information includes multiple time allocations, and any one of the multiple time allocations is used to indicate at least one of the time offset of a side signal resource among the multiple side signal resources, the time interval of a side signal resource among the multiple side signal resources, and the number of side signal sub-resources included in a side signal resource among the multiple side signal resources.

[0288] As an embodiment, at least two side signal resources among the multiple side signal resources correspond to the same transmission period, the time allocation of the at least two side signal resources is different, and / or the frequency domain positions of the at least two side signal resources are different.

[0289] As an embodiment, the frequency domain position of any sidelink signal resource among the multiple sidelink signal resources includes the absolute frequency domain position of the sidelink signal resource, or the frequency offset of the sidelink signal resource relative to a reference frequency domain position.

[0290] As an embodiment, the first sidelink signal group includes at least one sidelink synchronization signal block, the node corresponding to the first type of identifier supports sidelink initial beam pairing and / or sidelink unicast link establishment and / or sidelink beam management based on the sidelink synchronization signal block, or the at least one sidelink synchronization signal block occupies the first type of resources, or the resources of the first sidelink signal group are associated with the first type of identifier.

[0291] As an embodiment, the first receiver 1010 and the first transmitter 1020 may be a transceiver 1330. The first node 1000 may further include a processor 1310 and a memory 1320, as specifically shown in FIG13 .

[0292] FIG11 is a diagram of a second node for wireless communication provided by an embodiment of the present application. As shown in FIG11 , the second node 1100 includes a third receiver 1110 and a fourth receiver 1120 .

[0293] The third receiver 1110 may be configured to receive first information, where the first information is used to determine a plurality of sidelink signal resources.

[0294] The fourth receiver 1120 can be used to receive at least one side signal in the first side signal group on the first side signal resource; wherein, the multiple side signal resources are associated with multiple first-class identifiers, the first identifier is one of the multiple first-class identifiers, the first identifier is related to the first side signal resource, and the first identifier is used to determine the first node sending the one or more side signals.

[0295] As an embodiment, the first sidewalk signal group is used for at least one of sidewalk initial beam pairing, sidewalk unicast link establishment, and sidewalk beam management.

[0296] As an embodiment, the first sideline signal group includes at least one sideline signal, and any sideline signal in the first sideline signal group is a sideline synchronization signal block.

[0297] As an embodiment, the second node 1100 further includes a fifth receiver, which is configured to receive second information; wherein the second information is used to indicate that the multiple sidelink signal resources are associated with the multiple first-category identifiers.

[0298] As an embodiment, the first information includes at least one of a transmission period, a time allocation and a frequency domain position, and at least one of the transmission period, the time allocation and the frequency domain position is used to determine the multiple side signal resources.

[0299] As an embodiment, any sidelink signal resource among the multiple sidelink signal resources includes multiple sidelink signal sub-resources, and the multiple sidelink signal sub-resources correspond to at least one of the same transmission period, the same time allocation, and the same frequency domain position.

[0300] As an embodiment, the first information includes multiple time allocations, and any one of the multiple time allocations is used to indicate at least one of the time offset of a side signal resource among the multiple side signal resources, the time interval of a side signal resource among the multiple side signal resources, and the number of side signal sub-resources included in a side signal resource among the multiple side signal resources.

[0301] As an embodiment, at least two side signal resources among the multiple side signal resources correspond to the same transmission period, the time allocation of the at least two side signal resources is different, and / or the frequency domain positions of the at least two side signal resources are different.

[0302] As an embodiment, the frequency domain position of any sidelink signal resource among the multiple sidelink signal resources includes the absolute frequency domain position of the sidelink signal resource, or the frequency offset of the sidelink signal resource relative to a reference frequency domain position.

[0303] As an embodiment, the first sidelink signal group includes at least one sidelink synchronization signal block, the node corresponding to the first type of identifier supports sidelink initial beam pairing and / or sidelink unicast link establishment and / or sidelink beam management based on the sidelink synchronization signal block, or the at least one sidelink synchronization signal block occupies the first type of resources, or the resources of the first sidelink signal group are associated with the first type of identifier.

[0304] As an embodiment, the third receiver 1110 and the fourth receiver 1120 may be transceivers 1330. The second node 1100 may further include a processor 1310 and a memory 1320, as specifically shown in FIG13 .

[0305] FIG12 is a diagram of a third node for wireless communication provided by an embodiment of the present application. As shown in FIG12 , the third node 1200 includes a second transmitter 1210 .

[0306] The second transmitter 1210 can be used to send first information, and the first information is used to determine multiple side signal resources; wherein, the multiple side signal resources are associated with multiple first-class identifiers, the first identifier is one of the multiple first-class identifiers, the first identifier is related to the first node receiving the first information, and the first identifier is used by the first node to determine the first side signal resource for sending the first side signal group from the multiple side signal resources.

[0307] As an embodiment, the first sidewalk signal group is used for at least one of sidewalk initial beam pairing, sidewalk unicast link establishment, and sidewalk beam management.

[0308] As an embodiment, the first sideline signal group includes at least one sideline signal, and any sideline signal in the first sideline signal group is a sideline synchronization signal block.

[0309] As an embodiment, the third node 1200 further includes a third transmitter, which can be used to send second information; wherein, the second information is used to indicate that the multiple sidelink signal resources are associated with the multiple first-category identifiers.

[0310] As an embodiment, the first information includes at least one of a transmission period, a time allocation and a frequency domain position, and at least one of the transmission period, the time allocation and the frequency domain position is used to determine the multiple side signal resources.

[0311] As an embodiment, any sidelink signal resource among the multiple sidelink signal resources includes multiple sidelink signal sub-resources, and the multiple sidelink signal sub-resources correspond to at least one of the same transmission period, the same time allocation, and the same frequency domain position.

[0312] As an embodiment, the first information includes multiple time allocations, and any one of the multiple time allocations is used to indicate at least one of the time offset of a side signal resource among the multiple side signal resources, the time interval of a side signal resource among the multiple side signal resources, and the number of side signal sub-resources included in a side signal resource among the multiple side signal resources.

[0313] As an embodiment, at least two side signal resources among the multiple side signal resources correspond to the same transmission period, the time allocation of the at least two side signal resources is different, and / or the frequency domain positions of the at least two side signal resources are different.

[0314] As an embodiment, the frequency domain position of any sidelink signal resource among the multiple sidelink signal resources includes the absolute frequency domain position of the sidelink signal resource, or the frequency offset of the sidelink signal resource relative to a reference frequency domain position.

[0315] As an embodiment, the first sidelink signal group includes at least one sidelink synchronization signal block, the node corresponding to the first type of identifier supports sidelink initial beam pairing and / or sidelink unicast link establishment and / or sidelink beam management based on the sidelink synchronization signal block, or the at least one sidelink synchronization signal block occupies the first type of resources, or the resources of the first sidelink signal group are associated with the first type of identifier.

[0316] The second transmitter 1210 may be a transceiver 1330. The third node 1200 may further include a processor 1210 and a memory 1220, as specifically shown in FIG13 .

[0317] Figure 13 is a schematic block diagram of a communication device according to an embodiment of the present application. The dashed lines in Figure 13 indicate that the unit or module is optional. Apparatus 1300 may be used to implement the method described in the above method embodiment. Apparatus 1300 may be a chip, user equipment, or network equipment.

[0318] The device 1300 may include one or more processors 1310. The processor 1310 may support the device 1300 to implement the method described in the above method embodiment. The processor 1310 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0319] The apparatus 1300 may further include one or more memories 1320. The memories 1320 store programs that can be executed by the processor 1310, causing the processor 1310 to perform the methods described in the above method embodiments. The memories 1320 may be independent of the processor 1310 or integrated into the processor 1310.

[0320] The apparatus 1300 may further include a transceiver 1330. The processor 1310 may communicate with other devices or chips via the transceiver 1330. For example, the processor 1310 may transmit and receive data with other devices or chips via the transceiver 1330.

[0321] Figure 14 is a block diagram of a hardware module of a communication device provided in an embodiment of the present application. Specifically, Figure 14 shows a block diagram of a first communication device 1450 and a second communication device 1410 communicating with each other in an access network.

[0322] The first communication device 1450 includes a controller / processor 1459, a memory 1460, a data source 1467, a transmit processor 1468, a receive processor 1456, a multi-antenna transmit processor 1457, a multi-antenna receive processor 1458, a transmitter / receiver 1454 and an antenna 1452.

[0323] The second communication device 1410 includes a controller / processor 1475, a memory 1476, a data source 1477, a receive processor 1470, a transmit processor 1416, a multi-antenna receive processor 1472, a multi-antenna transmit processor 1471, a transmitter / receiver 1418 and an antenna 1420.

[0324] During transmission from the second communications device 1410 to the first communications device 1450, at the second communications device 1410, upper layer data packets from the core network or from a data source 1477 are provided to a controller / processor 1475. The core network and data source 1477 represent all protocol layers above the L2 layer. The controller / processor 1475 implements L2 layer functionality. During transmission from the second communications device 1410 to the first communications device 1450, the controller / processor 1475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communications device 1450 based on various priority metrics. The controller / processor 1475 is also responsible for retransmission of lost packets and signaling to the first communications device 1450. The transmit processor 1416 and the multi-antenna transmit processor 1471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 1416 implements coding and interleaving to facilitate forward error correction at the second communication device 1410, as well as mapping of signal constellations based on various modulation schemes (e.g., binary phase shift keying, quadrature phase shift keying, M-phase shift keying, and M-quadrature amplitude modulation). The multi-antenna transmit processor 1471 performs digital spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming on the coded and modulated symbols to generate one or more spatial streams. The transmit processor 1416 then maps each spatial stream to a subcarrier, multiplexes it with a reference signal (e.g., a pilot) in the time and / or frequency domain, and then uses an inverse fast Fourier transform to generate a physical channel carrying the time-domain multicarrier symbol stream. The multi-antenna transmit processor 1471 then performs transmit analog precoding / beamforming operations on the time-domain multicarrier symbol stream. Each transmitter 1418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 1471 into a radio frequency stream, and then provides it to a different antenna 1420 .

[0325] During transmission from the second communications device 1410 to the first communications device 1450, each receiver 1454 at the first communications device 1450 receives a signal via its corresponding antenna 1452. Each receiver 1454 recovers the information modulated onto the RF carrier and converts the RF stream into a baseband multi-carrier symbol stream, which is provided to the receive processor 1456. The receive processor 1456 and the multi-antenna receive processor 1458 implement various L1 layer signal processing functions. The multi-antenna receive processor 1458 performs receive analog precoding / beamforming operations on the baseband multi-carrier symbol stream from the receiver 1454. The receive processor 1456 uses a fast Fourier transform to convert the baseband multi-carrier symbol stream, after the receive analog precoding / beamforming operations, from the time domain to the frequency domain. In the frequency domain, the receive processor 1456 demultiplexes the physical layer data signal and reference signal, where the reference signal is used for channel estimation. The data signal undergoes multi-antenna detection in the multi-antenna receive processor 1458 to recover any spatial streams destined for the first communications device 1450. The symbols on each spatial stream are demodulated and recovered in the receive processor 1456, and soft decisions are generated. The receive processor 1456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the second communication device 1410 on the physical channel. The upper layer data and control signals are then provided to the controller / processor 1459. The controller / processor 1459 implements the functions of the L2 layer. The controller / processor 1459 may be associated with a memory 1460 that stores program codes and data. The memory 1460 may be referred to as a computer-readable medium. During transmission from the second communication device 1410 to the first communication device 1450, the controller / processor 1459 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover the upper layer data packets from the second communication device 1410. The upper layer data packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to the L3 layer for L3 processing.

[0326] During transmission from the first communications device 1450 to the second communications device 1410, upper layer data packets are provided to the controller / processor 1459 at the first communications device 1450 using a data source 1467. The data source 1467 represents all protocol layers above the L2 layer. Similar to the transmission functionality at the second communications device 1410 described in the transmission from the second communications device 1410 to the first communications device 1450, the controller / processor 1459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels, implementing L2 layer functions for both the user plane and the control plane. The controller / processor 1459 is also responsible for retransmission of lost packets and signaling to the second communications device 1410. The transmit processor 1468 performs modulation mapping and channel coding, while the multi-antenna transmit processor 1457 performs digital multi-antenna spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming. The transmit processor 1468 then modulates the resulting spatial stream into a multi-carrier / single-carrier symbol stream. After analog precoding and beamforming operations in the multi-antenna transmit processor 1457, the stream is provided to different antennas 1452 via the transmitter 1454. Each transmitter 1454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 1457 into a RF symbol stream before providing it to the antenna 1452.

[0327] During a transmission from the first communication device 1450 to the second communication device 1410, the functionality at the second communication device 1410 is similar to the reception functionality at the first communication device 1450 described for the transmission from the second communication device 1410 to the first communication device 1450. Each receiver 1418 receives a radio frequency signal via its corresponding antenna 1420, converts the received radio frequency signal into a baseband signal, and provides the baseband signal to a multi-antenna receive processor 1472 and a receive processor 1470. The receive processor 1470 and the multi-antenna receive processor 1472 collectively implement the L1 layer functionality. The controller / processor 1475 implements the L2 layer functionality. The controller / processor 1475 may be associated with a memory 1476 that stores program codes and data. The memory 1476 may be referred to as a computer-readable medium. During transmission from the first communications device 1450 to the second communications device 1410, the controller / processor 1475 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper layer data packets from the first communications device 1450. The upper layer data packets from the controller / processor 1475 can be provided to the core network or all protocol layers above the L2 layer, and various control signals can also be provided to the core network or L3 for L3 processing.

[0328] As an embodiment, the first communication device 1450 apparatus 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 together with the at least one processor, and the first communication device 1450 apparatus at least: receives first information, the first information is used to determine multiple side signal resources; sends a first side signal group on the first side signal resource; wherein the multiple side signal resources are associated with multiple first-class identifiers, the first identifier is one of the multiple first-class identifiers, the first identifier is related to the first node, and the first identifier is used to determine the first side signal resource from the multiple side signal resources.

[0329] As an embodiment, the first communication device 1450 apparatus includes: a memory storing a computer-readable instruction program, wherein the computer-readable instruction program generates an action when executed by at least one processor, the action including: receiving first information, the first information being used to determine a plurality of side signal resources; sending a first side signal group on a first side signal resource; wherein the plurality of side signal resources are associated with a plurality of first-class identifiers, the first identifier is one of the plurality of first-class identifiers, the first identifier is related to the first node, and the first identifier is used to determine the first side signal resource from the plurality of side signal resources.

[0330] As an embodiment, the first communication device 1450 corresponds to the first node or the second node in this application.

[0331] As an embodiment, the second communication device 1410 corresponds to the third node in this application.

[0332] As an embodiment, the first communication device 1450 is a user equipment, which can serve as a relay node.

[0333] As an embodiment, the first communication device 1450 is a user equipment supporting V2X, which can serve as a relay node.

[0334] As an embodiment, the first communication device 1450 is a user equipment supporting D2D, and the user equipment can serve as a relay node.

[0335] As an embodiment, the first communication device 1450 is a network control relay NCR.

[0336] As an embodiment, the first communication device 1450 is a relay wireless repeater.

[0337] As an embodiment, the first communication device 1450 is a relay.

[0338] As an embodiment, the second communication device 1410 is a base station.

[0339] As an embodiment, the first communication device 1450 corresponds to the first node or the second node in this application, and the antenna 1452, the receiver 1454, the multi-antenna receiving processor 1458, the receiving processor 1456, and the controller / processor 1459 are used to receive the first information in this application.

[0340] As an embodiment, the first communication device 1450 corresponds to the first node in the present application, the antenna 1452, the transmitter 1454, the multi-antenna transmit processor 1457, the transmit processor 1468, and the controller / processor 1459 are used to send the first sidelink signal group in the present application.

[0341] As an embodiment, the first communication device 1450 corresponds to the second node in the present application, the antenna 1452, the receiver 1454, the multi-antenna receiving processor 1458, the receiving processor 1456, and the controller / processor 1459 are used to perform the reception of at least one side signal in the first side signal group in the present application.

[0342] As an embodiment, the antenna 1420, the transmitter 1418, the multi-antenna transmit processor 1471, the transmit processor 1416, and the controller / processor 1475 are used to send the first information in this application.

[0343] The present application also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to a terminal or network device provided in the present application, and the program enables a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0344] The present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to a terminal or network device provided in the present application, and the program causes a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0345] The embodiments of the present application also provide a computer program. The computer program can be applied to the terminal or network device provided in the embodiments of the present application, and the computer program enables a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0346] It should be understood that the terms "system" and "network" in this application can be used interchangeably. In addition, the terms used in this application are only used to explain the specific embodiments of this application and are not intended to limit this application. The terms "first", "second", "third", and "fourth" in the specification and claims of this application and the accompanying drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0347] In the embodiments of this application, the term "indication" may refer to a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" may refer to a direct indication of B, e.g., B can obtain information through A; it may refer to an indirect indication of B, e.g., A indicates C, e.g., B can obtain information through C; or it may refer to an association between A and B.

[0348] In the embodiment of the present application, "B corresponding to A" means that B is associated with A and B can be determined based on A. However, it should be understood that determining B based on A does not mean determining B based solely on A, but B can also be determined based on A and / or other information.

[0349] In the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and indication, configuration and configuration, etc.

[0350] In the embodiments of the present application, "pre-defined" or "pre-configured" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., including a user device and a network device). The present application does not limit the specific implementation method. For example, pre-defined may refer to information defined in a protocol.

[0351] In the embodiments of the present application, the “protocol” may refer to a standard protocol in the communications field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0352] In the embodiments of this application, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0353] In various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0354] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0355] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0356] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0357] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0358] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A method in a first node for wireless communication, characterized in that include: receiving first information, wherein the first information is used to determine a plurality of sidewalk signal resources; Sending a first sidewalk signal group on a first sidewalk signal resource; Among them, the multiple side signal resources are associated with multiple first-class identifiers, the first identifier is one of the multiple first-class identifiers, the first identifier is related to the first node, and the first identifier is used to determine the first side signal resource from the multiple side signal resources.

2. The method according to claim 1, characterized in that The first sidewalk signal group is used for at least one of sidewalk initial beam pairing, sidewalk unicast link establishment and sidewalk beam management.

3. The method according to claim 1 or 2, characterized in that: The first sideline signal group includes at least one sideline signal, and any sideline signal in the first sideline signal group is a sideline synchronization signal block.

4. The method according to any one of claims 1 to 3, characterized in that include: receiving second information; The second information is used to indicate that the multiple sidewalk signal resources are associated with the multiple first-category identifiers.

5. The method according to any one of claims 1 to 4, characterized in that The first information includes at least one of a transmission period, a time allocation, and a frequency domain position, and at least one of the transmission period, the time allocation, and the frequency domain position is used to determine the multiple sidelink signal resources.

6. The method according to any one of claims 1 to 5, characterized in that Any sidewalk signal resource among the multiple sidewalk signal resources includes multiple sidewalk signal sub-resources, and the multiple sidewalk signal sub-resources correspond to at least one of the same transmission period, the same time allocation, and the same frequency domain position.

7. The method according to claim 5 or 6, characterized in that: The first information includes multiple time allocations, and any one of the multiple time allocations is used to indicate at least one of the time offset of a side signal resource among the multiple side signal resources, the time interval of a side signal resource among the multiple side signal resources, and the number of side signal sub-resources included in a side signal resource among the multiple side signal resources.

8. The method according to any one of claims 5 to 7, characterized in that: At least two sidewalk signal resources among the multiple sidewalk signal resources correspond to the same transmission period, the time allocation of the at least two sidewalk signal resources is different, and / or the frequency domain positions of the at least two sidewalk signal resources are different.

9. The method according to any one of claims 5 to 8, characterized in that: The frequency domain position of any sidewalk signal resource among the multiple sidewalk signal resources includes an absolute frequency domain position of the sidewalk signal resource, or a frequency offset of the sidewalk signal resource relative to a reference frequency domain position.

10. The method according to any one of claims 1 to 9, characterized in that The first sidewalk signal group includes at least one sidewalk synchronization signal block, and the node corresponding to the first type of identifier supports sidewalk initial beam pairing and / or sidewalk unicast link establishment and / or sidewalk beam management based on the sidewalk synchronization signal block, or, the at least one sidewalk synchronization signal block occupies the first type of resources, or, the resources of the first sidewalk signal group are associated with the first type of identifier.

11. A method in a second node for wireless communication, characterized in that: include: receiving first information, wherein the first information is used to determine a plurality of sidewalk signal resources; receiving at least one sidewalk signal in a first sidewalk signal group on a first sidewalk signal resource; Among them, the multiple side signal resources are associated with multiple first-class identifiers, the first identifier is one of the multiple first-class identifiers, the first identifier is related to the first side signal resource, and the first identifier is used to determine the first node sending the one or more side signals.

12. The method according to claim 11, characterized in that The first sidewalk signal group is used for at least one of sidewalk initial beam pairing, sidewalk unicast link establishment and sidewalk beam management.

13. The method according to claim 11 or 12, characterized in that: The first sideline signal group includes at least one sideline signal, and any sideline signal in the first sideline signal group is a sideline synchronization signal block.

14. The method according to any one of claims 11 to 13, characterized in that include: receiving second information; The second information is used to indicate that the multiple sidewalk signal resources are associated with the multiple first-category identifiers.

15. The method according to any one of claims 11 to 14, characterized in that The first information includes at least one of a transmission period, a time allocation, and a frequency domain position, and at least one of the transmission period, the time allocation, and the frequency domain position is used to determine the multiple sidelink signal resources.

16. The method according to any one of claims 11 to 15, characterized in that Any sidewalk signal resource among the multiple sidewalk signal resources includes multiple sidewalk signal sub-resources, and the multiple sidewalk signal sub-resources correspond to at least one of the same transmission period, the same time allocation, and the same frequency domain position.

17. The method according to claim 15 or 16, characterized in that The first information includes multiple time allocations, and any one of the multiple time allocations is used to indicate at least one of the time offset of a side signal resource among the multiple side signal resources, the time interval of a side signal resource among the multiple side signal resources, and the number of side signal sub-resources included in a side signal resource among the multiple side signal resources.

18. The method according to any one of claims 15 to 17, characterized in that: At least two sidewalk signal resources among the multiple sidewalk signal resources correspond to the same transmission period, the time allocation of the at least two sidewalk signal resources is different, and / or the frequency domain positions of the at least two sidewalk signal resources are different.

19. The method according to any one of claims 15 to 18, characterized in that The frequency domain position of any sidewalk signal resource among the multiple sidewalk signal resources includes an absolute frequency domain position of the sidewalk signal resource, or a frequency offset of the sidewalk signal resource relative to a reference frequency domain position.

20. The method according to any one of claims 11 to 19, characterized in that The first sidewalk signal group includes at least one sidewalk synchronization signal block, and the node corresponding to the first type of identifier supports sidewalk initial beam pairing and / or sidewalk unicast link establishment and / or sidewalk beam management based on the sidewalk synchronization signal block, or, the at least one sidewalk synchronization signal block occupies the first type of resources, or, the resources of the first sidewalk signal group are associated with the first type of identifier.

21. A method in a third node for wireless communication, characterized in that: include: Sending first information, wherein the first information is used to determine a plurality of sidewalk signal resources; Among them, the multiple side signal resources are associated with multiple first-category identifiers, the first identifier is one of the multiple first-category identifiers, the first identifier is related to a first node receiving the first information, and the first identifier is used by the first node to determine the first side signal resource for sending a first side signal group from the multiple side signal resources.

22. The method according to claim 21, characterized in that The first sidewalk signal group is used for at least one of sidewalk initial beam pairing, sidewalk unicast link establishment and sidewalk beam management.

23. The method according to claim 21 or 22, characterized in that The first sideline signal group includes at least one sideline signal, and any sideline signal in the first sideline signal group is a sideline synchronization signal block.

24. The method according to any one of claims 21 to 23, characterized in that include: sending a second message; The second information is used to indicate that the multiple sidewalk signal resources are associated with the multiple first-category identifiers.

25. The method according to any one of claims 21 to 24, characterized in that The first information includes at least one of a transmission period, a time allocation, and a frequency domain position, and at least one of the transmission period, the time allocation, and the frequency domain position is used to determine the multiple sidelink signal resources.

26. The method according to any one of claims 21 to 25, characterized in that Any sidewalk signal resource among the multiple sidewalk signal resources includes multiple sidewalk signal sub-resources, and the multiple sidewalk signal sub-resources correspond to at least one of the same transmission period, the same time allocation, and the same frequency domain position.

27. The method according to claim 25 or 26, characterized in that The first information includes multiple time allocations, and any one of the multiple time allocations is used to indicate at least one of the time offset of a side signal resource among the multiple side signal resources, the time interval of a side signal resource among the multiple side signal resources, and the number of side signal sub-resources included in a side signal resource among the multiple side signal resources.

28. The method according to any one of claims 25 to 27, characterized in that At least two sidewalk signal resources among the multiple sidewalk signal resources correspond to the same transmission period, the time allocation of the at least two sidewalk signal resources is different, and / or the frequency domain positions of the at least two sidewalk signal resources are different.

29. The method according to any one of claims 25 to 28, characterized in that The frequency domain position of any sidewalk signal resource among the multiple sidewalk signal resources includes an absolute frequency domain position of the sidewalk signal resource, or a frequency offset of the sidewalk signal resource relative to a reference frequency domain position.

30. The method according to any one of claims 21 to 29, characterized in that The first sidewalk signal group includes at least one sidewalk synchronization signal block, and the node corresponding to the first type of identifier supports sidewalk initial beam pairing and / or sidewalk unicast link establishment and / or sidewalk beam management based on the sidewalk synchronization signal block, or, the at least one sidewalk synchronization signal block occupies the first type of resources, or, the resources of the first sidewalk signal group are associated with the first type of identifier.

31. A first node for wireless communication, characterized in that: include: A first receiver, configured to receive first information, wherein the first information is used to determine a plurality of sidewalk signal resources; A first transmitter, configured to send a first sidewalk signal group on a first sidewalk signal resource; The plurality of side signal resources are associated with a plurality of first-category identifiers, and the first identifier is one of the plurality of first-category identifiers. The first identifier is related to the first node, and the first identifier is used to determine the first sideways signal resource from the multiple sideways signal resources.

32. The first node according to claim 31, characterized in that The first sidewalk signal group is used for at least one of sidewalk initial beam pairing, sidewalk unicast link establishment and sidewalk beam management.

33. The first node according to claim 31 or 32, characterized in that: The first sideline signal group includes at least one sideline signal, and any sideline signal in the first sideline signal group is a sideline synchronization signal block.

34. The first node according to any one of claims 31-33, characterized in that: include: a second receiver, configured to receive second information; The second information is used to indicate that the multiple sidewalk signal resources are associated with the multiple first-category identifiers.

35. The first node according to any one of claims 31-34, characterized in that: The first information includes at least one of a transmission period, a time allocation, and a frequency domain position, and at least one of the transmission period, the time allocation, and the frequency domain position is used to determine the multiple sidelink signal resources.

36. The first node according to any one of claims 31-35, characterized in that: Any sidewalk signal resource among the multiple sidewalk signal resources includes multiple sidewalk signal sub-resources, and the multiple sidewalk signal sub-resources correspond to at least one of the same transmission period, the same time allocation, and the same frequency domain position.

37. The first node according to claim 35 or 36, characterized in that: The first information includes multiple time allocations, and any one of the multiple time allocations is used to indicate at least one of the time offset of a side signal resource among the multiple side signal resources, the time interval of a side signal resource among the multiple side signal resources, and the number of side signal sub-resources included in a side signal resource among the multiple side signal resources.

38. The first node according to any one of claims 35-37, characterized in that: At least two sidewalk signal resources among the multiple sidewalk signal resources correspond to the same transmission period, the time allocation of the at least two sidewalk signal resources is different, and / or the frequency domain positions of the at least two sidewalk signal resources are different.

39. The first node according to any one of claims 35-38, characterized in that: The frequency domain position of any sidewalk signal resource among the multiple sidewalk signal resources includes an absolute frequency domain position of the sidewalk signal resource, or a frequency offset of the sidewalk signal resource relative to a reference frequency domain position.

40. The first node according to any one of claims 31-39, characterized in that: The first sidewalk signal group includes at least one sidewalk synchronization signal block, and the node corresponding to the first type of identifier supports sidewalk initial beam pairing and / or sidewalk unicast link establishment and / or sidewalk beam management based on the sidewalk synchronization signal block, or, the at least one sidewalk synchronization signal block occupies the first type of resources, or, the resources of the first sidewalk signal group are associated with the first type of identifier.

41. A second node for wireless communication, characterized in that: include: a third receiver, configured to receive first information, wherein the first information is used to determine a plurality of sidewalk signal resources; a fourth receiver, configured to receive at least one sidewalk signal in the first sidewalk signal group on the first sidewalk signal resource; Among them, the multiple side signal resources are associated with multiple first-class identifiers, the first identifier is one of the multiple first-class identifiers, the first identifier is related to the first side signal resource, and the first identifier is used to determine the first node sending the one or more side signals.

42. The second node according to claim 41, characterized in that The first sidewalk signal group is used for at least one of sidewalk initial beam pairing, sidewalk unicast link establishment and sidewalk beam management.

43. The second node according to claim 41 or 42, characterized in that: The first sideline signal group includes at least one sideline signal, and any sideline signal in the first sideline signal group is a sideline synchronization signal block.

44. The second node according to any one of claims 41-43, characterized in that: include: a fifth receiver, configured to receive second information; The second information is used to indicate that the multiple sidewalk signal resources are associated with the multiple first-category identifiers.

45. The second node according to any one of claims 41-44, characterized in that: The first information includes at least one of a transmission period, a time allocation, and a frequency domain position, and at least one of the transmission period, the time allocation, and the frequency domain position is used to determine the multiple sidelink signal resources.

46. ​​The second node according to any one of claims 41-45, characterized in that: Any sidewalk signal resource among the multiple sidewalk signal resources includes multiple sidewalk signal sub-resources, and the multiple sidewalk signal sub-resources correspond to at least one of the same transmission period, the same time allocation, and the same frequency domain position.

47. The second node according to claim 45 or 46, characterized in that: The first information includes multiple time allocations, and any one of the multiple time allocations is used to indicate at least one of the time offset of a side signal resource among the multiple side signal resources, the time interval of a side signal resource among the multiple side signal resources, and the number of side signal sub-resources included in a side signal resource among the multiple side signal resources.

48. The second node according to any one of claims 45-47, characterized in that: At least two sidewalk signal resources among the multiple sidewalk signal resources correspond to the same transmission period, the time allocation of the at least two sidewalk signal resources is different, and / or the frequency domain positions of the at least two sidewalk signal resources are different.

49. The second node according to any one of claims 45-48, characterized in that: The frequency domain position of any sidewalk signal resource among the multiple sidewalk signal resources includes an absolute frequency domain position of the sidewalk signal resource, or a frequency offset of the sidewalk signal resource relative to a reference frequency domain position.

50. The second node according to any one of claims 41-49, characterized in that: The first sidewalk signal group includes at least one sidewalk synchronization signal block, and the node corresponding to the first type of identifier supports sidewalk initial beam pairing and / or sidewalk unicast link establishment and / or sidewalk beam management based on the sidewalk synchronization signal block, or, the at least one sidewalk synchronization signal block occupies the first type of resources, or, the resources of the first sidewalk signal group are associated with the first type of identifier.

51. A third node for wireless communication, characterized in that: include: A second transmitter, configured to send first information, wherein the first information is used to determine a plurality of sidewalk signal resources; Among them, the multiple side signal resources are associated with multiple first-category identifiers, the first identifier is one of the multiple first-category identifiers, the first identifier is related to a first node receiving the first information, and the first identifier is used by the first node to determine the first side signal resource for sending a first side signal group from the multiple side signal resources.

52. The third node according to claim 51, characterized in that: The first sidewalk signal group is used for at least one of sidewalk initial beam pairing, sidewalk unicast link establishment and sidewalk beam management.

53. The third node according to claim 51 or 52, characterized in that: The first sideline signal group includes at least one sideline signal, and any sideline signal in the first sideline signal group is a sideline synchronization signal block.

54. The third node according to any one of claims 51-53, characterized in that: include: A third transmitter, used for sending second information; The second information is used to indicate that the multiple sidewalk signal resources are associated with the multiple first-category identifiers.

55. The third node according to any one of claims 51-54, characterized in that: The first information includes at least one of a transmission period, a time allocation, and a frequency domain position, and at least one of the transmission period, the time allocation, and the frequency domain position is used to determine the multiple sidelink signal resources.

56. The third node according to any one of claims 51-55, characterized in that: Any sidewalk signal resource among the multiple sidewalk signal resources includes multiple sidewalk signal sub-resources, and the multiple sidewalk signal sub-resources correspond to at least one of the same transmission period, the same time allocation, and the same frequency domain position.

57. The third node according to claim 55 or 56, characterized in that: The first information includes multiple time allocations, and any one of the multiple time allocations is used to indicate at least one of the time offset of a side signal resource among the multiple side signal resources, the time interval of a side signal resource among the multiple side signal resources, and the number of side signal sub-resources included in a side signal resource among the multiple side signal resources.

58. The third node according to any one of claims 55-57, characterized in that: At least two sidewalk signal resources among the multiple sidewalk signal resources correspond to the same transmission period, the time allocation of the at least two sidewalk signal resources is different, and / or the frequency domain positions of the at least two sidewalk signal resources are different.

59. The third node according to any one of claims 55-58, characterized in that: The frequency domain position of any sidewalk signal resource among the multiple sidewalk signal resources includes an absolute frequency domain position of the sidewalk signal resource, or a frequency offset of the sidewalk signal resource relative to a reference frequency domain position.

60. The third node according to any one of claims 51-59, characterized in that: The first sidewalk signal group includes at least one sidewalk synchronization signal block, and the node corresponding to the first type of identifier supports sidewalk initial beam pairing and / or sidewalk unicast link establishment and / or sidewalk beam management based on the sidewalk synchronization signal block, or, the at least one sidewalk synchronization signal block occupies the first type of resources, or, the resources of the first sidewalk signal group are associated with the first type of identifier.

61. A node used for wireless communication, characterized in that: It includes a transceiver, a memory and a processor, wherein the memory is used to store programs, and the processor is used to call the programs in the memory and control the transceiver to receive or send signals so that the node executes the method as described in any one of claims 1-10 or 11-20 or 21-30.

62. A device, characterized in that It comprises a processor, which is used to call a program from a memory so that the device executes the method as described in any one of claims 1-10 or 11-20 or 21-30.

63. A chip, characterized in that: It comprises a processor, which is used to call a program from a memory, so that a device equipped with the chip executes the method as described in any one of claims 1-10, 11-20 or 21-30.

64. A computer-readable storage medium, characterized in that A program is stored thereon, the program causing a computer to execute the method as claimed in any one of claims 1-10, 11-20 or 21-30.

65. A computer program product, characterized in that The method comprises a program which causes a computer to execute the method as claimed in any one of claims 1-10, 11-20 or 21-30.

66. A computer program, characterized in that The computer program enables a computer to execute the method according to any one of claims 1-10, 11-20 or 21-30.

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