CN117413603A - Method and apparatus in a node for wireless communication - Google Patents

Abstract

The application provides a method and a device in a node for wireless communication, so as to realize initial beam pairing based on a sidestream synchronous signal block. The method comprises the following steps: receiving first information, the first information being used to determine a plurality of sidestream signal resources; transmitting a first set of side-signal on a first side-signal resource; wherein the plurality of sideline signal resources are associated with a plurality of identifiers of a first type, the first identifier being one of the plurality of identifiers of the first type, the first identifier being associated with the first node, the first identifier being used to determine the first sideline signal resource from the plurality of sideline signal resources.

Description

Method and apparatus in a node for wireless communication

Technical Field

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

In sidelink communications, a sidelink synchronization signal block or a modified format of the sidelink synchronization signal block is used as a reference signal for initial beam pairing as an alternative. However, the conventional side-row synchronization signal block can only distinguish the synchronization source type to which the transmitting device belongs. Therefore, how to perform initial beam pairing based on the side line synchronization signal block and how to identify the transmitting device by the receiving device of the side line synchronization signal block to perform initial beam pairing are all technical problems to be solved.

Disclosure of Invention

The embodiment of the application provides a method and a device for a node of wireless communication. Various aspects related to the present application are described below.

In a first aspect, there is provided a method in a first node for wireless communication, comprising: receiving first information, the first information being used to determine a plurality of sidestream signal resources; transmitting a first set of side-signal on a first side-signal resource; wherein the plurality of sideline signal resources are associated with a plurality of identifiers of a first type, the first identifier being one of the plurality of identifiers of the first type, the first identifier being associated with the first node, the first identifier being used to determine the first sideline signal resource from the plurality of sideline signal resources.

In a second aspect, there is provided a method in a second node for wireless communication, comprising: receiving first information, the first information being used to determine a plurality of sidestream signal resources; receiving at least one side signal in a first side signal group on a first side signal resource; wherein the plurality of sidestream signal resources are associated with a plurality of first type identifications, a first identification being one of the plurality of first type identifications, the first identification being related to the first sidestream signal resources, the first identification being used to determine a first node transmitting the one or more sidestream signals.

In a third aspect, there is provided a method in a third node for wireless communication, comprising: transmitting first information, the first information being used to determine a plurality of sidestream signal resources; wherein the plurality of sidestream signal resources are associated with a plurality of first type identifications, a first identification being one of the plurality of first type identifications, the first identification being associated with a first node receiving the first information, the first identification being used by the first node to determine a first sidestream signal resource from the plurality of sidestream signal resources to transmit a first sidestream signal group.

In a fourth aspect, there is provided a first node for wireless communication, comprising: a first receiver for receiving first information, the first information being used to determine a plurality of sidestream signal resources; a first transmitter for transmitting a first set of side-line signals on a first side-line signal resource; wherein the plurality of sideline signal resources are associated with a plurality of identifiers of a first type, the first identifier being one of the plurality of identifiers of the first type, the first identifier being associated with the first node, the first identifier being used to determine the first sideline signal resource from the plurality of sideline signal resources.

In a fifth aspect, there is provided a second node for wireless communication, comprising: a third receiver for receiving first information, the first information being used to determine a plurality of sidestream signal resources; a fourth receiver that receives at least one side-row signal of the first side-row signal group on the first side-row signal resource; wherein the plurality of sidestream signal resources are associated with a plurality of first type identifications, a first identification being one of the plurality of first type identifications, the first identification being related to the first sidestream signal resources, the first identification being used to determine a first node transmitting the one or more sidestream signals.

In a sixth aspect, there is provided a third node for wireless communication, comprising: a second transmitter for transmitting first information, the first information being used to determine a plurality of sidestream signal resources; wherein the plurality of sidestream signal resources are associated with a plurality of first type identifications, a first identification being one of the plurality of first type identifications, the first identification being associated with a first node receiving the first information, the first identification being used by the first node to determine a first sidestream signal resource from the plurality of sidestream signal resources to transmit a first sidestream signal group.

In a seventh aspect, there is provided a first node for wireless communication, comprising a transceiver, a memory for storing a program, and a processor for calling the program in the memory and controlling the transceiver to receive or transmit signals to cause the first node to perform the method according to the first aspect.

In an eighth aspect, there is provided a second node for wireless communication, comprising a transceiver, a memory for storing a program, and a processor for calling the program in the memory and controlling the transceiver to receive or transmit signals to cause the second node to perform the method as described in the second aspect.

In a ninth aspect, there is provided a third node for wireless communication, comprising a transceiver, a memory for storing a program, and a processor for calling the program in the memory and controlling the transceiver to receive or transmit signals to cause the third node to perform the method according to the third aspect.

In a tenth aspect, embodiments of the present application provide a communication system, which includes the first node and/or the second node and/or the third node. In another possible design, the system may further include other devices that interact with the first node, the second node, or the third node in the solution provided in the embodiments of the present application.

In an eleventh aspect, embodiments of the present application provide a computer-readable storage medium storing a computer program that causes a computer to perform some or all of the steps of the methods of the above aspects.

In a twelfth aspect, embodiments of the present application provide a computer program product, wherein the computer program product comprises a non-transitory computer-readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of the methods of the above aspects. In some implementations, the computer program product can be a software installation package.

In a thirteenth aspect, embodiments of the present application provide a chip comprising a memory and a processor, the processor being operable to invoke and run a computer program from the memory to implement some or all of the steps described in the methods of the above aspects.

In the embodiment of the present application, the first information received by the first node may indicate a plurality of sidestream signal resources for transmitting the sidestream signal group, and the plurality of sidestream signal resources may be mapped to identities of the plurality of nodes. Therefore, the second node receiving the sidestream signal can distinguish different sending nodes according to the resources corresponding to the sidestream signal, so that the node sending the sidestream signal is identified, and effective initial beam pairing is realized.

In this embodiment of the present application, the first information may indicate a plurality of sidelobe signal resources, that is, resources used by a plurality of nodes for performing initial beam pairing are preconfigured. The first node sends the sidestream signal group on a first sidestream signal resource, and after the second node receives the first information, the second node can determine available beam information by detecting the sidestream signal.

In the embodiment of the application, any two nodes in the sidelink communication perform initial beam pairing before the sidelink unicast link is established. The unicast link is established by using the paired wave beams, so that the link range between the sending node and the receiving node can be expanded, and more nodes can realize advanced business use cases.

In the embodiment of the application, by executing initial beam pairing before the establishment of the sidelink unicast link, the transmitting node can effectively avoid transmitting the direct communication request message with larger resource expense on all beams in a beam scanning mode, thereby obviously reducing resource waste.

Drawings

Fig. 1 is a diagram illustrating an exemplary system architecture of a wireless communication system to which embodiments of the present application are applicable.

Fig. 2 is a schematic diagram of a slot structure of a side row synchronization signal block.

FIG. 3 is a schematic diagram showing the distribution of a plurality of S-SSBs in one cycle.

Fig. 4 is a flowchart of a method in a first node for wireless communication according to an embodiment of the present application.

Fig. 5 is a flow diagram of one implementation of beam initial pairing in a first operation.

Fig. 6 is a flow diagram of another implementation of beam initial pairing in a first operation.

Fig. 7 is a flow diagram of one implementation of sidelink unicast link establishment in a first operation.

Fig. 8 is a flow chart of one possible implementation of the method shown in fig. 4.

Fig. 9 is a flow chart of another possible implementation of the method shown in fig. 4.

Fig. 10 is a schematic structural diagram of a first node for wireless communication according to an embodiment of the present application.

Fig. 11 is a schematic structural diagram of a second node for wireless communication according to an embodiment of the present application.

Fig. 12 is a schematic structural diagram of a third node for wireless communication according to an embodiment of the present application.

Fig. 13 is a schematic structural diagram of an apparatus provided in an embodiment of the present application.

Fig. 14 is a schematic diagram of a hardware module of a communication device according to an embodiment of the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden for the embodiments herein, are intended to be within the scope of the present application.

Fig. 1 is a diagram illustrating an example system architecture of a wireless communication system 100 to which embodiments of the present application are applicable. The wireless communication system 100 may include a network device 110 and user devices 121-129. Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminals located within the coverage area.

In some implementations, communication between a User Equipment (UE) and the UE may be through a Sidelink (SL). The side-link communication may also be referred to as proximity-based services (proximity based services, proSe) communication, single-sided communication, side-link communication, device-to-device (D2D) communication, and the like.

Or, the side data is transmitted between the user equipment and the user equipment through the side uplink. Wherein the sidestream data may include data and/or control signaling. In some implementations, the sidelink data may be, for example, a physical sidelink control channel (physical sidelink control channel, PSCCH), a physical sidelink shared channel (physical sidelink shared channel, PSSCH), a PSCCH demodulation reference signal (demodulation reference signal, DMRS), PSSCH DMRS, a physical sidelink feedback channel (physical sidelink feedback channel, PSFCH), or the like.

Several common side-uplink communication scenarios are described below in connection with fig. 1. In the side-link communication, 3 scenarios can be classified according to whether or not a user equipment in the side-link is within the coverage of a network equipment. Scenario 1, the ue performs side-link communication within the coverage area of the network device. Scenario 2, a portion of the user devices perform side-link communications within the coverage area of the network device. Scenario 3, the ue performs side-link communication outside the coverage area of the network device.

As shown in fig. 1, in scenario 1, user devices 121-122 may communicate via a side-link, and all of user devices 121-122 are within the coverage of network device 110, or, alternatively, all of user devices 121-122 are within the coverage of the same network device 110. In such a scenario, network device 110 may send configuration signaling to user devices 121-122, and accordingly, user devices 121-122 communicate over the side-links based on the configuration signaling.

As shown in fig. 1, in case 2, user devices 123-124 may communicate via a side-uplink, and user device 123 is within the coverage of network device 110 and user device 124 is outside the coverage of network device 110. In this scenario, user device 123 receives configuration information for network device 110 and communicates over the side-link based on the configuration of the configuration signaling. However, for the ue 124, since the ue 124 is located outside the coverage area of the network device 110, the configuration information of the network device 110 cannot be received, and at this time, the ue 124 may acquire the configuration of the side uplink communication according to the configuration information of the pre-configuration (pre-configuration) and/or the configuration information sent by the ue 123 located in the coverage area, so as to communicate with the ue 123 through the side uplink based on the acquired configuration.

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

As shown in fig. 1, in case 3, user devices 125-129 are all outside the coverage area of network device 110 and cannot communicate with network device 110. In this case, the user equipment may perform side-link communication based on the pre-configuration information.

In some cases, user devices 127-129 that are outside the coverage area of the network device may form a communication group, and user devices 127-129 within the communication group may communicate with each other. In addition, the user equipment 127 in the communication group may act as a central control node, also referred to as a cluster head terminal (CH), and accordingly, the user equipment in other communication groups may be referred to as "group members".

It should be noted that fig. 1 illustrates one network device and a plurality of user devices, alternatively, the wireless communication system 100 may include a plurality of network devices and each network device may include other number of user devices within a coverage area, which is not limited in this embodiment of the present application.

Optionally, the wireless communication system 100 may further include a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that the technical solution of the embodiments of the present application may be applied to various communication systems, for example: fifth generation (5th generation,5G) systems or New Radio (NR) systems, long term evolution (long term evolution, LTE) systems, LTE frequency division duplex (frequency division duplex, FDD) systems, LTE time division duplex (time division duplex, TDD) and the like. The technical scheme provided by the application can also be applied to future communication systems, such as a sixth generation mobile communication system, a satellite communication system and the like.

The ue in the embodiments of the present application may also be referred to as a Terminal device, an access Terminal, a subscriber unit, a subscriber station, a Mobile Station (MS), a Mobile Terminal (MT), a remote station, a remote Terminal, a mobile device, a subscriber Terminal, a wireless communication device, a user agent, or a user equipment. The user equipment in the embodiment of the application can be equipment for providing voice and/or data connectivity for a user, and can be used for connecting people, things and machines, such as handheld equipment with wireless connection function, vehicle-mounted equipment and the like. The user device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet (Pad), a notebook, a palm, a mobile internet device (mobile internet device, MID), a wearable device, a vehicle, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned (self driving), a wireless terminal in teleoperation (remote medical surgery), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), or the like. Alternatively, the user equipment may act as a base station. For example, the user equipment may act as a scheduling entity providing a sidelink signal between user equipments in the internet of vehicles (V2X) or D2D etc. For example, a cellular telephone and a car communicate with each other using sidestream data. Communication between the cellular telephone and the smart home device is accomplished without relaying communication signals through the base station.

The network device in the embodiments of the present application may be a device for communicating with a user equipment, which may also be referred to as an access network device or a radio access network device, e.g. 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 (radio access network, RAN) node (or device) that accesses the user device to the wireless network. The base station may broadly cover or replace various names in the following, such as: a node B (NodeB), an evolved NodeB (eNB), a next generation NodeB (gNB), a relay station, a transmission point (transmitting and receiving point, TRP), a transmission point (transmitting point, TP), an Access Point (AP), a master station MeNB, a secondary station SeNB, a multi-mode wireless (MSR) node, a home base station, a network controller, an access node, a wireless node, a transmission node, a transceiver node, a baseband unit (BBU), a radio remote unit (Remote Radio Unit, RRU), an active antenna unit (active antenna unit, AAU), a radio head (remote radio head, RRH), a Central Unit (CU), a Distributed Unit (DU), a positioning node, and the like. The base station may 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 may also refer to a communication module, modem, or chip for placement within the aforementioned device or apparatus. The base station may also be a mobile switching center, D2D, V X, a device that performs a function of a base station in machine-to-machine (M2M) communication, a network-side device in a 6G network, a device that performs a function of a base station in a future communication system, or the like. The base stations may support networks of the same or different access technologies. The embodiment of the application does not limit the specific technology and the specific device form adopted by the network device.

The base station may be fixed or mobile. For example, a helicopter or drone may be configured to act as a mobile base station, and one or more cells may move according to the location of the mobile base station. In other examples, a helicopter or drone may be configured to function as a device to communicate with another base station.

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

Network devices and user devices may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; the device can be deployed on the water surface; but also on aerial planes, balloons and satellites. In the embodiment of the present application, the scene where the network device and the user device are located is not limited.

It should be understood that all or part of the functionality of the communication device in this application may also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform (e.g. a cloud platform).

For ease of understanding, some related art knowledge related to the embodiments of the present application will be described first. The following related technologies may be optionally combined with the technical solutions of the embodiments of the present application, which all belong to the protection scope of the embodiments of the present application. Embodiments of the present application include at least some of the following.

It should be understood that the term (terminalogy) in the embodiments of the present application may be interpreted with reference to the third generation partnership project (3rd generation partnership project,3GPP) specification protocols TS36 series, TS37 series and TS38 series, but may also be interpreted with reference to the institute of electrical and electronics engineers (Institute of Electrical and Electronics Engineers, IEEE) specification protocols.

With the development of communication technology, technical research and standardization on sidestream communication is being developed. Sidestream communications developed in the RAN of 5G NR Release-16 (Release-16, rel-16) are mainly used to support advanced V2X applications. In Rel-17, system architecture working group 2 (System Architecture, sa 2) is specifically researched and standardized for ProSe including public safety (public safety) and business related services (commercial related service). As part of Rel-17, radio access network working group 1 (RAN 1) and RAN2 developed power saving techniques such as partial sensing (DRX), discontinuous reception (discontinuous reception) and Inter-user coordination (IUC) techniques in order to save power consumption for battery limited users and improve reliability of side-by-side communications.

The application field of sidestream communication is also expanding gradually. Illustratively, while NR SL was originally developed to support V2X applications, industry is increasingly enthusiasm to extend NR SL to more commercial use cases. For example: highly automated driving techniques require a large amount of sensor information to be shared between vehicles.

Due to the continuous expansion of the application field of the sidestream communication, higher requirements are put forward on the NR SL. These requirements include two key requirements: increasing the sidelink data rate and supporting more new carriers on the sidelink. By adding more new carriers, the transmission bandwidth can be enlarged, thereby further increasing the data rate.

From 3GPP project RP-222806, it is known that NR SL evolution (evolution) of Rel-18 has focused mainly on sidelobe beam management (sidelink beam management, SL BM) for supporting new carriers. Sidestream beam management typically includes initial beam-pairing (initial beam-maintenance), beam main-maintenance (beam main-maintenance), beam failure recovery (beam failure recovery, BFR), and the like.

The relationship for PC 5/sidelink unicast link establishment (unicast link establishment) with sidelink initial beam pairing includes the following three alternative flows (candidate procedures):

Alternative procedure one: performing initial beam pairing prior to establishment of a sidelink unicast link between UE1 and UE 2;

alternative flow two: performing initial beam pairing during setup of a sidelink unicast link between UE1 and UE 2;

alternative flow three: the initial beam pairing is started after the sidelink unicast link between UE1 and UE2 is established.

The alternative flow can expand the transmission range of the sidestream communication and improve the resource utilization rate. In particular, the advantage of performing initial beam pairing prior to sidelink unicast link establishment is that the paired beam expansion transmission range can be fully utilized, so that sidelink unicast links can be established between more UEs, thereby providing more advanced business case services. Such UEs are, for example, stadiums, large arenas, high performance audiovisual equipment at concerts, and the like. Further, performing initial beam pairing before sidelink unicast link establishment is further advantageous in that direct communication request (direction communication request, DCR) messages for unicast link establishment need only be transmitted on the paired beams through the physical sidelink shared channel (physical sidelink shared channel, PSSCH), thereby avoiding multiple transmissions of DCR on resources occupied by multiple transmission beams by using beam scanning (beam scanning), and thus significantly improving resource utilization efficiency.

For the reference signal adopted in alternative procedure one, the 3GPP RAN1 conference has agreed to adopt side-line synchronous broadcast signal blocks (SL synchronization signal/physical sidelink broadcast channel block, S-SS/PSBCH block, S-SSB) or modified formats based on S-SSB as an alternative. As one example, an alternative flow-an operational flow to perform initial beam pairing using S-SSB as a reference signal may be as follows:

UE1 transmits a plurality of S-SSBs by means of beam scanning (beam scanning);

UE2 performs reference signal received power (reference signal received power, RSRP) measurements for sidelink synchronization signals (SL synchronization signal, SLSS) and/or PSBCH, UE2 determining a transmit beam of UE1 and a receive beam of UE2 based on the measured RSRP;

for the determined transmit beam of UE1, UE2 performs associated beam reporting.

Traditional S-SSB design

In a conventional NR S-SSB design, the S-SSB consists of a sideline primary synchronization signal (sidelink primary synchronization signal, S-PSS), a sideline secondary synchronization signal (sidelink secondary synchronization signal, S-SSS) and a PSBCH. Typically, the S-SSB occupies one slot in the time domain. The S-SSB uses a mathematical format (numerology) configured by a SL bandwidth part (BWP) including a subcarrier spacing and a Cyclic Prefix (CP) length, etc. In one SL BWP, the transmission of the S-SSB cannot be frequency division multiplexed (frequency division multiplexing, FDM) with the transmission of other sidelink physical channels, so that the ineffective S-SSB (S) transmission not only increases the resource consumption, but also severely affects the available resources of other physical SL channels/signals.

For ease of understanding, the structure of one slot of the S-SSB is exemplarily described below with reference to fig. 2. Referring to fig. 2, in one slot of the S-SSB, S-PSS and S-SSS occupying two symbols, respectively, PSBCH, and a last guard symbol (guard symbol) are included. In the structure shown in fig. 2, one S-SSB slot of a normal CP, the first symbol (i.e., the first PSBCH symbol) may be used for automatic gain control (automatic gain control, AGC), the second and third symbols for carrying the S-PSS, the fourth and fifth symbols for carrying the S-SSS, the last symbol for the guard symbol, and the other symbols for carrying the PSBCH.

As shown in fig. 2, the S-SSB spans 11 Common resource blocks (Common resource blocks, common RBs), i.e., 132 subcarriers, in one SL BWP in the frequency domain. Wherein, S-PSS and S-SSS occupy 127 sub-carriers. The frequency domain location of the S-SSB in the SL BWP is preconfigured or configured. Thus, the receiving UE of S-SSB (including UE 1) does not need to perform blind detection in the frequency domain to find S-SSB.

The UE sends S-SSB in order to extend the coverage of the synchronization reference source (synchronization reference source). Specifically, in NR SL, the Global navigation satellite System (global navigation satellite system, GNSS), gNB/eNB and NR SL UE (i.e., sync RefUE) can all be used as a synchronization reference source for one UE. The SyncRefUE can cause surrounding UEs to have the same timing reference by transmitting synchronization information (e.g., S-SSB).

In the design of a conventional S-SSB, one or more S-SSBs are transmitted in a fixed period (i.e., 160ms,16 radio frames). The number of multiple S-SSBs in one S-SSB period is preconfigured or configurable, depending on the subcarrier spacing (subcarrier spacing, SCS) and frequency domain range (frequency range), as shown in table 1. Table 1 shows the number of S-SSB transmissions in one S-SSB period.

TABLE 1

The distribution of the plurality of S-SSBs within a fixed period depends on two parameters, one being the slot offset (slot offset) from the start of the S-SSB period to the first S-SSB and the other being the slot interval (slot interval) between two consecutive S-SSBs.

For ease of understanding, the distribution of multiple S-SSBs over a fixed period is illustrated below in connection with FIG. 3. In the example of fig. 3, the fixed period, i.e., the S-SSB period, is 16 radio frames. When 16 radio frames are used as a group, the beginning of each period is the first time slot of the current group of radio frames, and the ending is the first time slot of the next group of radio frames.

There are 4S-SSBs in a fixed period of fig. 3. The time period between the time slot in which the first S-SSB is located and the start position of the fixed period is a time offset. The time period between two adjacent S-SSBs in fig. 3 is a time interval.

In the NR Uu interface, SSBs transmitted by a network appliance (e.g., a gNB) may be part of an initial access procedure (initial access procedure). In the initial access procedure, the UE may identify the best SSB by detecting SSBs or the best beam from the gNB to the UE, and then the UE may report the best SSB or the best beam pair through a physical random access channel (physical random access channel, PRACH). In this procedure, the gNB may identify the corresponding UE, or may identify the best beam pair with this UE.

The conventional NR S-SSB structure is similar to the NR Uu SSB structure, but the conventional S-SSB design is only used for synchronization. That is, the legacy S-SSB can only distinguish between sync source types (synchronization source type) by the side-row sync signal identification (sidelink synchronization signal identity, SL-SSID) carried by the S-PSS and S-SSS. The synchronization source type is included within or outside of the cell/GNSS coverage and whether the SyncRefUE is directly or indirectly synchronized to the synchronization source. Thus the conventional SL-SSID is not UE-specific and cannot be used to distinguish between different UEs. In other words, by detecting S-SSBs, UE2 cannot identify whether multiple SSBs are from the same UE or multiple UEs, and UE1 transmitting the S-SSBs cannot be identified from multiple UEs, so that UE2 cannot determine the optional beam to be reported and the exact number of optional beams.

In a related solution, the use of enhanced SL-SSID is proposed. The enhanced SL-SSID comprises two parts, UE-specific information indication and synchronization information indication: for the synchronization information indication part, the current scheme can be reused; for UE-specific information indication, the Source identification (Source ID) and/or Destination identification (Destination ID) may be based.

However, this scheme enlarges the indication range of SL-SSID, and it is necessary to redesign the sequence generation of S-PSS and S-SSS, and the difficulty of modifying the standard is great, and it is also disadvantageous to make backward compatibility (back compatibility), i.e. UEs that do not support NR Rel-16 and Rel-17.

In summary, how to perform initial beam pairing before sidelink unicast link establishment through S-SSB is a technical problem to be solved for SL BM. Furthermore, how to identify the transmitting UE by the S-SSB is also a technical problem to be solved by the UE2 receiving the S-SSB. Furthermore, how better the S-SSB can carry the UE identity or the source identity is also a technical problem to be solved.

It should be appreciated that the above-mentioned problem that the receiving node cannot identify the transmitting node when performing initial beam pairing based on the S-SSB is only one example, and the embodiments of the present application may be applied to a scenario that the transmitting node cannot be identified when performing beam management based on any type of reference signal.

To solve the above-mentioned problems, embodiments of the present application propose a method in a first node for wireless communication. According to the method, a first node determines a first side signal resource associated with the first node in a plurality of side signal resources according to first information, and sends a first side signal group on the first side signal resource. For the second node, it may be determined whether the sidestream signal is transmitted by the first node based on the resources of the sidestream signal. That is, the present application introduces a plurality of sidelink signal resources associated with a plurality of nodes in order for a receiving node (or a second node) to identify a transmitting node (or a first node) so as to effectively perform an initial beam pairing or the like.

It should be noted that, the beams mentioned in the embodiments of the present application may include or be replaced by at least one of the following: a beam, a physical beam (physical beam), a logical beam (logical beam), a spatial filter (spatial filter), spatial parameters (spatial parameter), a spatial filter (spatial domain filter), a spatial transmission filter (spatial domain transmission filter), a spatial reception filter (spatial domain reception filter), an antenna port (antenna port). The meaning of these expressions may be consistent and are not differentiated by the embodiments of the present application.

Method embodiments of the present application are described in detail below with reference to the accompanying drawings. Fig. 4 is a flowchart of a method in a first node for wireless communication according to an embodiment of the present application. The method shown in fig. 4 includes step S410 and step S420. It should be appreciated that the method illustrated in fig. 4 may be performed by a first node.

In some implementations, the first node may be any of the user devices described above that perform sidestream communications. For example, the first node may be a vehicle in V2X or an infrastructure communication facility in V2X. In some implementations, the first node may be located within the range of network coverage or may be located outside the range of network coverage. When located within the network coverage, the first node may communicate laterally based on the configuration of the network device.

As an embodiment, the first node may be a network-controlled relay (NCR).

As an embodiment, the first node may be a user equipment, e.g. user equipment 121-129 as shown in fig. 1.

As an embodiment, the first node may be a relay (relay), such as a relay terminal.

Referring to fig. 4, in step S410, first information is received.

The first node may receive the first information in a number of ways. In some embodiments, the first node may receive the first information through other nodes with which it interacts. The other nodes may be network devices or user devices other than the first node. In some embodiments, the first node may receive the first information through a higher layer of itself.

In some embodiments, the sender of the first information may be a communication device that interacts with the first node. Illustratively, the sender of the first information is a network device that provides services for the first node. The network device may also be referred to as a third node. For example, the third node transmits the first information to the first node. Illustratively, the sender of the first information may be other network-side devices than the third node.

As an embodiment, the sender of the first information is a base station. The base station may provide communication services for the area in which the first node is located.

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

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 next or bottom layer of the first node. For example, the first information may be issued by a radio resource control (radio resource control, RRC) layer corresponding to the first node to the physical layer by layer.

As an embodiment, the first information comprises a higher layer information. The higher layer information may be information about the first operation issued by respective higher layers with respect to the physical layer. For example, the first information may be an RRC signaling, or the first information may be carried in the RRC signaling. As another example, the first information is high-level configured or preconfigured.

As an embodiment, the first information comprises an RRC layer signaling.

As an embodiment, the first information comprises an RRC information element (information element, IE). For example, the first information may be carried in an RRC IE.

As an embodiment, the first information may be an RRC IE (SL-SyncConfig), and reference may be made specifically to 3GPP TS38.3316.3.5.

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

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

The first information is used to determine a plurality of sidestream signal resources. The plurality of sidelink signal resources may be preconfigured time-frequency resources for transmitting one or more sidelink signals, time-frequency resources occupied by the sidelink signals, or time-frequency resources used for the sidelink signals. In some embodiments, the sidestream signals associated with the plurality of sidestream signal resources may include a plurality of sidestream signal groups. For example, any of a plurality of side row signal resources may be used for side row signals in one or more side row signal groups.

As an embodiment, the sidelink signal resource comprises a time domain resource and/or a frequency domain resource.

As an embodiment, the sidelink signal resource comprises one or more Resource Elements (REs).

As an embodiment, the sidelink signal resource comprises one or more time slots in the time domain.

As an embodiment, the sidelobe signal resource comprises one or more subcarriers in the frequency domain.

As an embodiment, the plurality of sidestream signal resources are respectively used for the plurality of sidestream signal groups. The plurality of sidestream signal groups may be a plurality of sidestream signal groups transmitted by a plurality of nodes, or a plurality of sidestream signal groups transmitted by one node. The plurality of side row signal resources may or may not be in one-to-one correspondence with the plurality of side row signal groups.

Illustratively, the plurality of sidestream signal resources may be used to transmit or receive a plurality of sidestream signal groups, without limitation.

As an embodiment, the plurality of sidelink signal resources are time-frequency resources occupied by the plurality of sidelink signal groups, respectively. Illustratively, the time-frequency resources occupied by the plurality of sidelobe signal groups are orthogonal.

As one embodiment, any one of the plurality of side row signal groups includes at least one side row signal. Any side row signal group may include one or more side row signals transmitted by any node.

As one embodiment, any one of the plurality of side row signal groups includes a plurality of side row signals.

The plurality of sidestream signal resources indicated by the first information may be used to transmit a plurality of sidestream signals. In some embodiments, a plurality of sidestream signal resources are used to transmit sidestream synchronization signal blocks. The side line synchronization signal block may be a side line synchronization broadcast signal block, and the side line synchronization signal block may be represented as S-SSB (sidelink-synchronization signal block) or S-SS/PSBCH block, which is not limited in this embodiment of the present application. The S-SSB herein may be replaced by an S-SS/PSBCH block. The sidelink synchronization signal block may include at least two of the S-PSS, S-SSS and PSBCH. The side row synchronization signal block may include an S-PSS and an S-SSS. The sidelink synchronization signal block may not include the PSBCH.

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

As one embodiment, the first information is used to indicate a plurality of S-SSB resources.

As one embodiment, the first information is used to indicate a plurality of SL CSI-RS resources.

The first information may indicate a plurality of sidestream signal resources by a plurality of parameters. In some embodiments, the first information may include at least one of a transmission period, a time allocation (time allocations), and a frequency domain location. At least one of a transmission period, a time allocation, and a frequency domain location is used to determine a plurality of sidelobe signal resources.

The transmission period may be used to indicate a time period for the sidestream signal resource. Multiple transmission periods refer to transmission periods that differ in time-domain length and/or time-domain position. In some embodiments, the multiple transmit periods may follow the design of the NR SL, or may be newly designed according to the resource usage requirement. 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 setup and/or beam management, the design of the transmission period of the first S-SSB needs to facilitate higher layer signaling for indication.

For example, any one of the plurality of transmission periods may be indicated with a specified time unit. The specified time unit may be a time slot, a symbol, or the like, which is not limited herein.

As one embodiment, any one of the plurality of transmission periods includes a positive integer number of time slots.

Illustratively, any one of the plurality of transmission periods may be represented by a specified length of time. The specified length of time may represent a time period in M time units. The time unit may be milliseconds.

As one embodiment, any one of the plurality of transmission periods includes a positive integer number of milliseconds (ms).

As an embodiment, any one of the plurality of transmission periods is equal to 160ms.

In some embodiments, multiple sidestream signal resources may correspond to one transmission period. In order to realize the configuration of a plurality of sidelobe signal resources within one transmission period, the transmission period may be enlarged. For example, one or more of the plurality of transmission periods is greater than 160ms.

For example, any one of the plurality of transmission periods may be a specified T time units or T time lengths. The T can be a fixed value or a variable which changes according to a certain rule.

As an embodiment, any one of the plurality of transmission periods is a constant.

As an embodiment, any one of the plurality of transmission periods is variable.

As an embodiment, the plurality of sidelink signal resources respectively correspond to a plurality of transmission periods. For example, the plurality of sidelink signal resources may correspond to a plurality of different transmission periods, respectively. As another example, any several of the plurality of sidelink signal resources may correspond to the same transmission cycle. As another example, any one of the plurality of sidestream signal resources may be distributed over two or more different transmission periods.

As one embodiment, the first information indicates a plurality of S-SSB periods.

A time allocation (time allocation) may be used to indicate the time domain location of the sidelink signal resource. The time allocation may be indicated by a number of parameters. Multiple time allocations refer to one or more parameters in the time allocation being different. In some embodiments, the time allocation of sidestream signal resources may include parameters such as time offset, time interval, and number of resources in one transmission period. Taking the resources corresponding to the S-SSB in fig. 3 as an example, the time offset, the time interval, and the number of resources constitute the time allocation of the S-SSB resources. Wherein the number of resources is 4.

As an embodiment, the number of resources in one transmission period is greater than or equal to 1.

As an embodiment, the number of resources in one transmission period may be any one of 1, 2, 4, 8, 16, 32, 64.

As one example, the value of the time offset may be any number from 0 to 1279.

As an example, the value of the time interval may be any number from 0 to 639.

As an embodiment, the plurality of sidelink signal resources respectively correspond to a plurality of time allocations. For example, the plurality of sidelink signal resources may correspond to a plurality of different time allocations, respectively. The plurality of different time allocations may be different in at least one parameter of time offset, time interval, and number of resources. As another example, any several of the plurality of sideline signal resources may correspond to the same time allocation. An exemplary explanation will be made later with reference to fig. 8 and 9.

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

The frequency domain location may be used to indicate the frequency domain occupied by the sidelink signal resource. In some embodiments, the frequency domain position of the sidelink signal resource may be indicated with at least two parameters of a start position, an end position and a frequency domain range of the frequency domain. In some embodiments, the frequency domain locations of the sidelink signal resources may be contiguous or spaced.

As an example, the frequency domain location may be one or more RBs in SL BWP.

As one embodiment, the frequency domain location may be one or more subcarriers.

In some embodiments, the frequency domain location of any of the plurality of side-row signal resources comprises an absolute frequency domain location of the side-row signal resource or a frequency offset of the side-row signal resource relative to a reference frequency domain location. Illustratively, the frequency domain location of the sidelobe signal resource may be indicated by an absolute frequency domain location. For example, the frequency domain location may be represented as a frequency band or a frequency bin. Illustratively, the frequency domain location of the sidelobe signal resource may be indicated by a relative frequency domain location. The relative frequency domain location may be determined based on any reference frequency domain location. For example, the frequency domain position may be a value where the start frequency point and the frequency offset of the corresponding frequency band of the side signal are added. For another example, the frequency domain position may be a value of a termination frequency point and a frequency offset reduction of the frequency band corresponding to the sidelobe signal.

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

As an embodiment, the frequency offset is one or more parameters such as subcarriers or RBs, which are not limited herein.

As an embodiment, the first information indicates a plurality of frequency domain positions of the S-SSBs or a plurality of frequency offsets from an absolute frequency domain position. The absolute frequency domain position may be used as a reference frequency domain position.

As an embodiment, the plurality of sidelink signal resources respectively correspond to a plurality of frequency domain locations. For example, the plurality of sidelink signal resources may correspond to a plurality of different frequency domain locations, respectively. As another example, any several of the plurality of sidelink signal resources may correspond to the same frequency domain location. As another example, any one of the plurality of side-row signal resources may be distributed in two or more different frequency domain locations.

When the sidestream signal is S-SSB, the plurality of sidestream signal resources are a plurality of S-SSB resources. Each S-SSB resource may correspond to different S-SSB periods, different slot offsets, different slot spacings, different frequency domain locations, etc.

In some embodiments, the plurality of sidestream signal resources may be indicated by a variety of parameters. For example, one or more parameters of the sidelink signal resources described above may be used as an index to a plurality of sidelink signal resources to facilitate the indication.

As one embodiment, the plurality of sidelink signal resources are configured for at least one of the sidelink initial beam pairing, sidelink unicast link establishment, and sidelink beam management. The sidestream signal resources are configured for at least one of three operations in order to increase the efficiency of sidestream communications. The three operations will be described later with reference to fig. 5 to 7.

With continued reference to fig. 4, in step S420, a first set of side-line signals is transmitted on a first side-line signal resource.

After determining the plurality of sidestream signal resources, the first node may select the first sidestream signal resource and transmit the sidestream signal. That is, the first sidelink signal resource is a resource associated with the first node of the plurality of sidelink signal resources. In some embodiments, the first node may select a first sidestream signal resource corresponding thereto based on the identification in the plurality of sidestream signal resources.

The plurality of sidestream signal resources may be associated with a plurality of first type identifications to facilitate determination of corresponding sidestream signal resources by the plurality of nodes. The plurality of sidestream signal resources may be associated with a plurality of first type identifiers, alternatively the plurality of sidestream signal resources may correspond to the plurality of first type identifiers, or the plurality of sidestream signal resources may be distinguished by the plurality of first type identifiers.

As an embodiment, the plurality of first class identifications are used to determine the plurality of sidestream signal resources, respectively.

To determine the plurality of sidestream signal resources, the plurality of first type identifications may include a plurality of identifications. In some embodiments, the plurality of identifications may be in one-to-one correspondence with the plurality of sidestream signal resources. For example, when the plurality of sidestream signal resources includes a plurality of types of sidestream signal resources, the plurality of identifications are in one-to-one correspondence with the plurality of types of sidestream signal resources. The various types of sidelink signal resources may be categorized according to one or more parameters of a transmission cycle, a time allocation, and a time domain position. In some embodiments, one of the plurality of identifications corresponds to a plurality of sidestream signal resources.

The association of the plurality of first class identifications with the plurality of sidestream signal resources may be indicated by the second information. That is, the second information is used to indicate that the plurality of sidestream signal resources are associated with the plurality of first type identifications. In some embodiments, the first node may receive the second information to distinguish the plurality of sidestream signal resources by the plurality of first class identifications.

The various ways of receiving the second information by the first node may refer to various ways of receiving the first information, which are not described herein.

As an embodiment, the second information is used to indicate an association between the plurality of sidestream signal resources and the plurality of first type identifications. For example, the second information may indicate correspondence of indexes of the plurality of sidestream signal resources with the plurality of first class identifications. As another example, the second information may indicate a manner of determining the plurality of first type identifications based on time-frequency locations of the plurality of sidestream signal resources.

As an embodiment, the second information comprises a higher layer signaling.

As an embodiment, the second information comprises an RRC layer signaling.

As an embodiment, the second information includes an RRC IE.

The manner in which the first information and the second information are received by the second node may be any of a number of manners by the first node.

In some embodiments, the plurality of sidestream signal resources may be associated with the plurality of first type identifications by way of a map. As one embodiment, the second information indicates a mapping relationship between the plurality of S-SSB resources and the L1Source IDs or the partial L1Source IDs.

As one embodiment, the plurality of sidestream signal resources are mapped to the plurality of first class identifications. Taking the S-SSB resources as an example, when the plurality of first type identifiers are layer 1 (layer 1, L1) Source identifiers, the plurality of S-SSB resources are mapped to layer 1Source identifiers Source IDs or part of L1Source IDs. Wherein the source identifier may be represented by 8 bits. The first node may select an S-SSB resource to send the S-SSB by its source identification. The second node may distinguish between L1Source IDs or partial L1Source IDs by detecting S-SSBs on different resources.

As one embodiment, the associating of the plurality of sidestream signal resources with the plurality of first type identifications includes the plurality of sidestream signal resources corresponding to the plurality of first type identifications. The plurality of first class identifications may be associated with indication parameters of the plurality of sidestream signal resources. For example, the plurality of first class identifications may correspond to time domain locations of the plurality of side row signal resources.

As one embodiment, the plurality of sidestream signal resources are in one-to-one correspondence with the plurality of first type identifiers. The first type of identification is unique to each of the plurality of sidestream signal resources. In this scenario, the transmitting node and the receiving node identify a corresponding sidestream signal resource by a first type identifier.

As one embodiment, at least one sidestream signal resource of the plurality of sidestream signal resources is associated with one of the plurality of first type identifications. For example, the indication parameter of two sidestream signal resources of the plurality of sidestream signal resources may be associated with an identifier of a plurality of identifiers of a first type, by which the two sidestream signal resources may be identified. For example, one L1 Source ID may be associated with multiple S-SSB time allocations.

As one embodiment, one of the plurality of sidestream signal resources is associated with at least one of the plurality of first type identifications. For example, one of the side-row signal resources may be associated with two of the plurality of first-type identifiers, with either of the two identifiers identifying the side-row signal resource.

The plurality of first class identifications may also be used to identify a plurality of nodes. With the plurality of first class identifications, the plurality of nodes may correspond to a plurality of sidestream signal resources. Any node of the plurality of nodes may determine one or more sidestream signal resources corresponding thereto from among the plurality of sidestream signal resources by the first class identification.

As an embodiment, the plurality of first class identifications are used to identify a plurality of nodes, respectively, any one of the plurality of nodes being a UE. Illustratively, a first type of identification may be used to distinguish between two or more UEs in a sidelink. For example, two UEs correspond to one first type identifier, and the other nodes determine which is the transmitting node through the first type identifier in the information.

As an embodiment, the plurality of first class identifications corresponds to the plurality of nodes. The plurality of first class identifications may correspond to the plurality of nodes by a plurality of consecutive or spaced identifications. For example, where the plurality of first classes are identified as sequence numbers, the sequence numbers of different nodes may be consecutive.

As one embodiment, the plurality of first type identifiers are in one-to-one correspondence with the plurality of nodes. The first type of identification is unique to each node in the communication system and can be used for other communication device identification.

As one embodiment, at least one of the plurality of first class identifications 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-type identifiers. Other nodes can identify the node by either of these two identifications.

As one embodiment, one of the plurality of first class identifications 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 type identifications. Other nodes can identify both nodes by this identification.

As an embodiment, the first node is one of the plurality of nodes. The first node may be any one of a plurality of nodes. When the first information indicates a plurality of sidestream signal resources for a plurality of nodes to transmit sidestream signals, the first node is any one of the plurality of nodes that needs to transmit sidestream signals.

As an embodiment, the plurality of nodes includes the first node.

The second node may be a node where the first node wishes to perform initial beam pairing or sidelink unicast link establishment or sidelink beam management, or may be a node that receives a sidelink signal sent by the first node.

As an embodiment, the plurality of nodes includes the second node.

The plurality of first class identifications may include a first identification associated with the first node. The first identifier is associated with the first node, alternatively the first node corresponds to the first identifier, or the first node may be identified with the first identifier. As an embodiment, the first identification is used to identify the first node.

In some embodiments, the plurality of first class identifications may identify the plurality of nodes in a plurality of ways. Taking the first identifier as an example, the first identifier may include a plurality of identifiers related to the first node or a sidestream signal sent by the first node.

The plurality of first type identifications may be node identifications or beam indications, for example. When the first type of identification is beam indication, the receiving node can determine useful beam information through receiving side row signals.

As one embodiment, the first identifier includes a Source identifier (Source ID). The source identifier of the sidestream signal in the first identifier may facilitate the node that receives the sidestream signal to identify the sending node.

As an embodiment, the first identifier includes a layer 1source identifier (layer 1source identity,L1 Source ID). For example, the first node may find an associated S-SSB resource according to its L1 Source ID and transmit multiple beams on the S-SSB resource by means of beam scanning. The second node detects the S-SSB, and determines the L1 Source ID of the UE sending the S-SSB according to the detected resource occupied by the S-SSB and the mapping relation between the S-SSB resource and the L1 Source ID, so as to judge the UE1.

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

The first node may be a node that sends a sidelink signal to one or more of the acknowledgments. For example, when the first node performs unicast or multicast communication, the node receiving the sidelink signal has performed sidelink communication with the first node, or has established sidelink communication with the first node through the sidelink signal. In this scenario, the first identification may also be used to identify a node in communication with the first node.

As an embodiment, the first identification is used to identify the second node. The second node may be any node in communication 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 a node of the plurality of nodes. The second node may determine, in a plurality of ways, an association of the plurality of sidestream signal resources with the first type identifier, and determine the sending node according to the received sidestream signal.

As an embodiment, the first identification comprises a Destination identification (Destination identity, destination ID).

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

As an embodiment, the first identity comprises a layer 2destination identity (layer 2destination ID,L2 Destination ID).

The first node may determine a first sidelink signal resource among the plurality of sidelink signal resources by the first identifier. As previously described, the plurality of first class identifications are associated with a plurality of sidestream signal resources. The first identifier is one of a plurality of first class identifiers, and thus the first identifier corresponds to one or more of a plurality of sidestream signal resources. The resource corresponding to the first identifier is a first side signal resource.

As an embodiment, the first identification is used to determine the first side signal resource. Illustratively, the first identity may be for the first node to select a first sidelink signal resource corresponding thereto.

The first node transmits a first set of side-line signals on a first side-line signal resource. For a second node receiving the sidestream signals, if the second node receives one or more sidestream signals in the first sidestream signal group, the second node determines that the transmitting node is the first node according to the resources occupied by the sidestream signals.

As can be seen from the foregoing, the first sidelink signal resource is one of a plurality of sidelink signal resources. The plurality of side row signal resources are for a plurality of side row signal groups, and thus the first side row signal group is one of the plurality of side row signal groups.

As one embodiment, the plurality of side row signal resources are respectively used for a plurality of side row signal groups, the first side row signal group being one of the plurality of side row signal groups. When the plurality of sidestream signal resources are respectively used for the plurality of sidestream signal groups, the plurality of sidestream signal resources are in one-to-one correspondence with the plurality of sidestream signal groups. The first side-row signal group corresponds to a first side-row signal resource.

As an embodiment, the plurality of sidestream signal resources are respectively used for transmitting a plurality of sidestream signal groups, the first sidestream signal group being one of the plurality of sidestream signal groups.

As one embodiment, the plurality of side row signal resources are each used to receive a plurality of side row signal groups, the first side row signal group being one of the plurality of side row signal groups.

As previously described, any of the plurality of side row signal groups includes at least one side row signal. The first side row signal group is one of a plurality of side row signal groups.

As an embodiment, the first set of side row signals comprises at least one side row signal, any of the first set of side row signals being a side row synchronization signal block.

As an embodiment, the first side row signal group comprises a plurality of side row signals.

Illustratively, the side row signals in the first side row signal group may be S-SSB.

As one example, either side-row signal in the first side-row signal group is S-SSB in either traditional (legacy) NR Rel-16 or Rel-17.

As one example, any side-row signal in the first side-row signal group is a new S-SSB that is different from the S-SSB in conventional nrrel-16 and Rel-17. The new S-SSB adopts a modified format of S-SSB.

As one embodiment, any side row signal in the first side row signal group comprises S-PSS.

As one embodiment, any side-row signal in the first side-row signal group comprises S-SSS.

As one embodiment, at least one side row signal of the first side row signal group comprises S-SSB.

As an embodiment, the first side-row signal group comprises at least one S-SSB.

Illustratively, the side row signals in the first side row signal group may be SL CSI-RS.

As an embodiment, any side-row signal of the first side-row signal group is a SL CSI-RS.

As an embodiment, at least one side row signal of the first side row signal group comprises a SL CSI-RS.

As an embodiment, the first side-row signal group comprises at least one SL CSI-RS.

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

As one embodiment, the first sidelink signal group is associated with at least one of sidelink initial beam pairing, sidelink unicast link establishment and sidelink beam management.

Illustratively, the first node performs sidelink initial beam pairing with other nodes by transmitting a first sidelink signal group. The sidelink initial beam pair is used for matching the transmit beam and the receive beam of the first node with other nodes to determine the best beam pair. The other node is for example the second node described above.

For one embodiment, the procedure of the sidestream initial beam pairing may refer to the pairing procedure of other communication systems (for example, NR), and the related procedure may be improved according to the characteristics of the sidestream communication system.

As one embodiment, the process of sidelining the initial beam pairing includes two processes of coarse beam pairing and fine beam pairing.

For ease of understanding, an initial beam pairing procedure including coarse pairing and fine pairing is described below in connection with fig. 5. As shown in fig. 5, the sidelink receive beam of UE1 is initially beam paired with the sidelink transmit beam of UE 2.

Referring to fig. 5, in step S510, coarse pairing is completed between UE2 transmit beam a and UE1 receive beam 2.

In step S520, UE1 receives the signals transmitted by Beam A using the 3 narrower beams 2-1, 2-2 and 2-3 and performs measurements for refined pairing. UE1 configures 3 narrow beams in beam 2 and UE2 transmits multiple signals.

Subsequently, UE1 selects one narrow beam as a reception beam for transmission beam a of UE2 according to the measurement result.

As an embodiment, the initial beam pairing procedure includes beam rough pairing.

For ease of understanding, an initial beam pairing procedure including coarse pairing is described below in connection with fig. 6. As shown in fig. 6, the sidelink transmit beam of UE1 is initially beam paired with the sidelink receive beam of UE 2. Referring to fig. 6, ue1 transmits 4 beams by means of beam scanning. UE2 makes measurements on the 4 transmit beams of UE1 over the 2 receive beams, respectively. The UE2 determines a matched UE1 transmit beam and UE2 receive beam according to the measurement result, and notifies the UE1.

Illustratively, the first node establishes a sidestream unicast link with other nodes by sending the first sidestream signal group. The other nodes are user equipment or relays for which the first node desires to perform sidestream communication. The other node is for example a second node.

For ease of understanding, the procedure of one implementation of sidelink unicast link establishment is illustrated below by taking UE1 and UE2 in fig. 7 as examples.

Referring to fig. 7, in step S710, UE1 transmits DCR to UE 2. UE1 requests UE2 to establish a sidelink unicast link by sending a DCR.

In step S720, UE2 feeds back a direct communication acceptance to UE1 (direct communication accept). According to the feedback of the UE2, the UE1 and the UE2 complete the establishment process of the sidestream unicast link.

In some embodiments, the sidelink unicast link establishment procedure may include initial beam pairing. For example, when initial beam pairing occurs prior to unicast link establishment, the sidelink unicast link establishment procedure may be considered to include performing initial beam pairing.

Illustratively, the first node performs sidelink beam management with other nodes via the first sidelink signal group. As described above, sidelink beam management includes initial beam pairing, beam maintenance, and beam failure recovery. Multiple processes in sidelink beam management may enable the first node to perform stable sidelink communications over a larger link range. The processes such as beam maintenance and beam failure recovery may refer to the implementation process of other communication systems (for example, NR), and may also improve the related flow according to the characteristics of the sidestream communication system.

In some embodiments, not all sidestream signal groups require preconfigured sidestream 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 L1 Source IDs supporting UEs based on S-SSB initial beam pairing have a mapping relationship with the S-SSB resources.

In some embodiments, the first sidelink signal group includes at least one sidelink synchronization signal block, and the node corresponding to the first type 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 a first type of resource, or the resource of the first sidelink signal group is associated with the first type identifier.

As one embodiment, a plurality of nodes corresponding to a plurality of first type identifications support S-SSB based sidelink initial beam pairing and/or sidelink unicast link establishment and/or sidelink beam management.

As an embodiment, the S-SSBs sent or received by the plurality of nodes corresponding to the plurality of first class identifiers occupy the first class resources. The first type of resources is different from the resources occupied by the S-SSB conventionally used for synchronization. That is, the first type of resources are configured separately from the resources used for synchronization.

As an embodiment, a plurality of sidestream signal resources for sending or receiving S-SSBs are associated with, carry, or map to the first type of identification.

As can be seen from fig. 4, the first node may determine the first sidelink signal resource from the plurality of sidelink signal resources by the first identifier. The first side-row signal resource may be used to transmit a first side-row signal group. The second node that receives one or more sidestream signals of the first sidestream signal group may determine, according to a resource occupied by the sidestream signal or an identifier corresponding to the occupied resource, that a sending node of the sidestream signal is the first node. It follows that the second node may identify the first node to perform beam initial pairing, sidelink unicast linking, or beam management operations with the first node.

As mentioned previously, multiple sidestream signal resources are used for multiple sidestream signal groups. Since any of the plurality of side row signal groups includes one or more side row signals, any of the plurality of side row signal resources may include one or more side row signal sub-resources. When any side row signal resource includes multiple side row signal sub-resources, the multiple side row signal sub-resources may be used to transmit multiple side row signals in any side row signal group.

As an embodiment, the sidelink signal sub-resource comprises a time domain resource and/or a frequency domain resource.

As one embodiment, the side row signal sub-resource includes one or more REs.

As an embodiment, the sidelink signal sub-resource comprises one or more symbols in the time domain.

As an embodiment, the sidelink signal sub-resource comprises one or more sub-carriers in the frequency domain.

In some embodiments, any one of the plurality of sidelink signal resources comprises a plurality of sidelink signal sub-resources, each of the plurality of sidelink signal sub-resources corresponding to at least one of a same transmission cycle, a same time allocation, and a same frequency domain location. Illustratively, the resource configuration parameters corresponding to a plurality of sidelink signal sub-resources in any of the sidelink signal resources are the same for ease of indication. For example, the plurality of sidelobe signal resources correspond to the same time offset and time interval.

As an embodiment, a plurality of sidelink signal sub-resources comprised by any of the plurality of sidelink signal resources are used for one sidelink signal group.

As one embodiment, any of the plurality of sideline signal resources comprises a plurality of sideline signal sub-resources being used to transmit a sideline signal group.

As an embodiment, the first information may include at least one of a transmission period, a time allocation, and a frequency domain position corresponding to the plurality of sidelink signal sub-resources, for indicating the plurality of sidelink signal sub-resources.

As an embodiment, the plurality of sidelink signal sub-resources are orthogonal in the time domain. The plurality of sidelink signal resources may be orthogonalized by different time allocations or frequency domain locations for simultaneous transmission or simultaneous reception of the plurality of sidelink signals.

In some embodiments, the first information includes a plurality of time allocations, any one of the plurality of time allocations being used to indicate at least one of a time offset of one of the plurality of sideline signal resources, a time interval of one of the plurality of sideline signal resources, a number of sideline signal sub-resources included by one of the plurality of sideline signal resources.

As one embodiment, the first information includes a plurality of time allocations, any one of the plurality of time allocations being used to indicate one of the plurality of side row signal resources. That is, the first information may indicate a plurality of sidestream signal resources, respectively, through a plurality of time allocations.

As one embodiment, any of the plurality of time allocations includes a time offset, a time interval, and a number of side-row signal sub-resources. The time offset and the time interval can be any number mentioned above, or can be newly designed parameters for different operations.

As an embodiment, the time offset included in any one of the plurality of time allocations is a time offset of a first one of the plurality of sidelink signal sub-resources included in one of the plurality of sidelink signal resources.

As an embodiment, the first sidelink signal sub-resource is a first sidelink signal sub-resource of the plurality of sidelink signal sub-resources in a time domain. Illustratively, the plurality of side-row signal sub-resources are time-domain configured in time-order. The first sidelink signal sub-resource of the plurality of sidelink signal resources is a temporally foremost one of the sidelink signal sub-resources.

As an embodiment, the time offset of the first one of the plurality of sideline signal sub-resources is a time offset between the first one of the plurality of sideline signal sub-resources and a start of a transmission period to which the plurality of sideline signal sub-resources belong. For example, when the plurality of sidelink signal sub-resources correspond to the same transmission period, the time offset may be an offset between a time domain position of the first sidelink signal sub-resource and a start position of the transmission period.

The time offset may be represented by various time units, such as time slots, symbols, etc.

As one embodiment, the time offset of a first side row signal sub-resource of the plurality of side row signal sub-resources comprises a positive integer number of time slots.

As one embodiment, the time offset of a first side row signal sub-resource of the plurality of side row signal sub-resources comprises a positive integer number of side row slots.

As an embodiment, the time interval included in any one of the plurality of time allocations is a time interval of any consecutive two of the plurality of sideline signal sub-resources included in one of the plurality of sideline signal resources. Illustratively, the interval of any two side row signal sub-resources of the plurality of side row signal sub-resources is a positive integer multiple of the time interval.

As an embodiment, the two consecutive sideline signal sub-resources are any two consecutive sideline signal sub-resources in the time domain among the plurality of sideline signal sub-resources. For example, two consecutive side-row signal sub-resources may be a first side-row signal sub-resource and a second side-row signal sub-resource in the time domain, or may be a second and third side-row signal sub-resource, and so on.

The time interval may also be represented by various time units, such as time slots, symbols, etc.

As an embodiment, the time interval of two consecutive side row signal sub-resources of the plurality of side row signal sub-resources comprises a positive integer number of time slots.

As an embodiment, the time interval of two consecutive side row signal sub-resources of the plurality of side row signal sub-resources comprises a positive integer number of side row time slots.

As an embodiment, the number of sideline signal sub-resources included in any one of the plurality of time allocations is the number of all sideline signal sub-resources included in one of the plurality of sideline signal resources. For example, the number of sideline signal resources in the time allocation may be the number of all sideline signal sub-resources in one period.

As an embodiment, the number of sidelink signal sub-resources is the number of all sidelink signal sub-resources in the time domain among the plurality of sidelink signal sub-resources.

The first information may include a plurality of time allocations. Any of a plurality of time allocations may be used to indicate a plurality of side row signal sub-resources of any of the side row signal resources. Illustratively, three parameters in any one time allocation are used to determine the time domain location of each of the plurality of sidelink signal sub-resources. Illustratively, at least one of the three parameters of the time allocation is used to determine the plurality of sidestream signal resources. For example, when the plurality of time allocations of the plurality of sideline signal resources are only different in time offset, the plurality of sideline signal sub-resources in each sideline signal resource may be indicated by the time offset.

As one embodiment, any one of the plurality of time allocations is used to indicate a plurality of sideline signal sub-resources comprised by one of the plurality of sideline signal resources, a time offset of a first one of the plurality of sideline signal sub-resources, a time interval of two consecutive ones of the plurality of sideline signal sub-resources, a number of sideline signal sub-resources of the plurality of sideline signal sub-resources being used to determine the plurality of sideline signal sub-resources.

As one embodiment, any one of the plurality of time allocations is used to indicate a plurality of sideline signal sub-resources included by one of the plurality of sideline signal resources.

As one embodiment, at least one of a time offset of a first sideline signal sub-resource of the plurality of sideline signal sub-resources, a time interval of two consecutive sideline signal sub-resources of the plurality of sideline signal sub-resources, and a number of sideline signal sub-resources of the plurality of sideline signal sub-resources is used to determine the plurality of sideline signal sub-resources.

In some embodiments, at least two of the plurality of sidelink signal resources correspond to a same transmission cycle, time allocations of the at least two sidelink signal resources are different, and/or frequency domain locations of the at least two sidelink signal resources are different. As can be seen from the foregoing, one transmission period may configure a plurality of sideline signal resources, where the plurality of sideline signal resources correspond to the same transmission period. For example, the period of S-SSB may be extended to support more mapping of L1 Source IDs.

As an embodiment, the time allocation difference of the at least two sidelink signal resources corresponding to the same transmission period includes at least one of a time offset, a time interval, and a number of sidelink signal sub-resources being different.

As an embodiment, the time allocation difference of the at least two sideline signal resources corresponding to the same transmission period includes a time offset difference, so as to ensure that the first sideline signal sub-resource of the two sideline signal resources does not overlap. In this scenario, the time interval and the number of sidelink signal sub-resources in the time allocation may be the same or different.

As an implementation manner of the above embodiment, at least two sidestream signal resources with different time offsets in the same transmission period are independent from each other in time domain position. That is, in the same transmission period, the time periods of at least two sidestream signal resources are not overlapped, which can help reduce mutual interference of different node sidestream signals. An exemplary explanation will be made later with reference to fig. 8.

As an implementation manner of the above embodiment, at least two sidestream signal resources with different time offsets in the same transmission period are mutually interacted in time domain position. That is, in the same transmission period, the time periods of at least two sidelink signal resources overlap, so that the resources can be more effectively utilized. An exemplary explanation will be made later with reference to fig. 9.

As an embodiment, the time allocations of the at least two sidelobe signal resources corresponding to the same transmission period are different, including the same time offset and different time intervals. In this scenario, a first sidelink signal sub-resource of the two sidelink signal resources may correspond to a different frequency domain location to avoid overlapping of the resources.

As an embodiment, the time allocation differences of the at least two sidelobe signal resources corresponding to the same transmission period comprise time offsets and time intervals being different. In this scenario, the time interval of the at least two sideline signal resources and the number of the sideline signal sub-resources should meet the requirement that all the sideline signal sub-resources of the at least two sideline signal resources are orthogonal.

As an embodiment, when at least two side-row signal resources in the plurality of side-row signal resources correspond to the same transmission period, all side-row signal sub-resources in the at least two side-row signal resources do not overlap.

Various designs of side-row signal resources including a plurality of side-row signal sub-resources are described above. For ease of understanding, the side-row signal resources are illustrated below in connection with two possible implementations shown in fig. 8 and 9. As shown in fig. 8 and 9, the time-frequency resources are used for transmitting or receiving the S-SSB.

Referring to fig. 8, N sidelink signal resources, N > 1, are included in one transmission period. The N sidestream signal resources are sidestream signal resource 801, sidestream signal resource 802 to sidestream signal resource 80N, respectively. As shown in fig. 8, each sidelink signal resource comprises 4 sidelink signal sub-resources. The time offsets of the N sidelink signal resources are different, and the time intervals are the same.

In fig. 8, N sidestream signal resources correspond to N L1 source identifiers, respectively. Sidestream signal resource 801 corresponds to L1 source ID#1, sidestream signal resource 802 corresponds to L1 source ID#2, and so on, sidestream signal resource 80N corresponds to L1 source ID#N. As described above, the node corresponding to the L1 source id#1 may send S-SSBs on the sideline signal resource 801, and the node receiving S-SSBs on the sideline signal resource 801 may determine that the sending node is the node corresponding to the L1 source id#1 according to the resource.

With continued reference to fig. 8, the N sidestream signal resources correspond to the same transmission period, and the time periods of the sidestream signal resource 801, the sidestream signal resource 802, and the sidestream signal resource 80N are independent of each other. On the time axis shown in fig. 9, N time periods sequentially arranged correspond to N side row signal resources, respectively. Thus, the first time period of the time domain of the 4 sidelink signal sub-resources of the sidelink signal resource 801, the second time period of the adjacent 4 sidelink signal sub-resources of the sidelink signal resource 802, and the time period from the sidelink signal resource 803 to the sidelink signal resource 80N sequentially arranged.

Referring to fig. 9, in fig. 9, N sidelink signal resources, that is, a sidelink signal resource 901, a sidelink signal resource 902 to a sidelink signal resource 90N, are also included in one transmission period. Likewise, each sidelink signal resource comprises 4 sidelink signal sub-resources. The time offsets of the N sidelink signal resources are different, and the time intervals are the same.

In fig. 9, N sidestream signal resources correspond to N L1 source identifiers, respectively. Sidestream signal resource 901 corresponds to L1 source ID#1, sidestream signal resource 902 corresponds to L1 source ID#2, and so on, sidestream signal resource 90N corresponds to L1 source ID#N.

Unlike fig. 8, the time periods of the N side row signal resources in fig. 9 are overlapping. On the time axis shown in fig. 9, N first side signal sub-resources of the N side signal resources are configured first, and N second side signal sub-resources, N third side signal sub-resources and N fourth side signal sub-resources of the N side signal resources are configured in sequence.

Method embodiments of the present application are described above in detail in connection with fig. 1-9, and apparatus embodiments of the present application are described below in detail in connection with fig. 10-14. It is to be understood that the description of the method embodiments corresponds to the description of the device embodiments, and that parts not described in detail can therefore be seen in the preceding method embodiments.

Fig. 10 is a schematic diagram of a first node for wireless communication according to an embodiment of the present application. As shown in fig. 10, the first node 1000 includes a first receiver 1010 and a first transmitter 1020.

A first receiver 1010 is operable to receive first information that is used to determine a plurality of sidestream signal resources.

A first transmitter 1020 operable to transmit a first set of side-line signals on a first side-line signal resource; wherein the plurality of sideline signal resources are associated with a plurality of identifiers of a first type, the first identifier being one of the plurality of identifiers of the first type, the first identifier being associated with the first node, the first identifier being used to determine the first sideline signal resource from the plurality of sideline signal resources.

As one embodiment, the first sidelink signal group is used for at least one of sidelink initial beam pairing, sidelink unicast link establishment and sidelink beam management.

As an embodiment, the first set of side row signals comprises at least one side row signal, any of the first set of side row signals being a side row synchronization signal block.

As an embodiment, the first node 1000 further comprises a second receiver operable to receive second information; wherein the second information is used to indicate that the plurality of sidestream signal resources are associated with the plurality of first type identifications.

As one embodiment, the first information includes at least one of a transmission period, a time allocation, and a frequency domain location, which is used to determine the plurality of sidelobe signal resources.

As an embodiment, any side line signal resource of the plurality of side line signal resources includes a plurality of side line signal sub-resources, and the plurality of side line signal sub-resources all correspond to at least one of the same transmission period, the same time allocation, and the same frequency domain position.

As an embodiment, the first information includes a plurality of time allocations, any one of the plurality of time allocations being used to indicate at least one of a time offset of one of the plurality of sideline signal resources, a time interval of one of the plurality of sideline signal resources, and a number of sideline signal sub-resources comprised by one of the plurality of sideline signal resources.

As an embodiment, at least two sideline signal resources of the plurality of sideline signal resources correspond to a same transmission period, time allocations of the at least two sideline signal resources are different, and/or frequency domain positions of the at least two sideline signal resources are different.

As an embodiment, the frequency domain position of any of the plurality of sidelink signal resources comprises an absolute frequency domain position of the sidelink signal resource or a frequency offset of the sidelink signal resource with respect to a reference frequency domain position.

As an embodiment, the first sideline signal group includes at least one sideline synchronization signal block, and the node corresponding to the first type identifier supports sideline initial beam pairing and/or sideline unicast link establishment and/or sideline beam management based on the sideline synchronization signal block, or the at least one sideline synchronization signal block occupies a first type of resource, or the resource of the first sideline signal group is associated with the first type identifier.

As an example, the first receiver 1010 and the first transmitter 1020 may be a transceiver 1330. The first node 1000 may also include a processor 1310 and a memory 1320, as shown in particular in fig. 13.

Fig. 11 is a second node for wireless communication according to an embodiment of the present application. As shown in fig. 11, the second node 1100 includes a third receiver 1110 and a fourth receiver 1120.

A third receiver 1110 is operable to receive first information that is used to determine a plurality of sidestream signal resources.

A fourth receiver 1120 operable to receive at least one side-row signal of the first side-row signal group on the first side-row signal resource; wherein the plurality of sidestream signal resources are associated with a plurality of first type identifications, a first identification being one of the plurality of first type identifications, the first identification being related to the first sidestream signal resources, the first identification being used to determine a first node transmitting the one or more sidestream signals.

As one embodiment, the first sidelink signal group is used for at least one of sidelink initial beam pairing, sidelink unicast link establishment and sidelink beam management.

As an embodiment, the first set of side row signals comprises at least one side row signal, any of the first set of side row signals being a side row synchronization signal block.

As an embodiment, the second node 1100 further comprises a fifth receiver operable to receive the second information; wherein the second information is used to indicate that the plurality of sidestream signal resources are associated with the plurality of first type identifications.

As one embodiment, the first information includes at least one of a transmission period, a time allocation, and a frequency domain location, which is used to determine the plurality of sidelobe signal resources.

As an embodiment, any side line signal resource of the plurality of side line signal resources includes a plurality of side line signal sub-resources, and the plurality of side line signal sub-resources all correspond to at least one of the same transmission period, the same time allocation, and the same frequency domain position.

As an embodiment, the first information includes a plurality of time allocations, any one of the plurality of time allocations being used to indicate at least one of a time offset of one of the plurality of sideline signal resources, a time interval of one of the plurality of sideline signal resources, and a number of sideline signal sub-resources comprised by one of the plurality of sideline signal resources.

As an embodiment, at least two sideline signal resources of the plurality of sideline signal resources correspond to a same transmission period, time allocations of the at least two sideline signal resources are different, and/or frequency domain positions of the at least two sideline signal resources are different.

As an embodiment, the frequency domain position of any of the plurality of sidelink signal resources comprises an absolute frequency domain position of the sidelink signal resource or a frequency offset of the sidelink signal resource with respect to a reference frequency domain position.

As an embodiment, the first sideline signal group includes at least one sideline synchronization signal block, and the node corresponding to the first type identifier supports sideline initial beam pairing and/or sideline unicast link establishment and/or sideline beam management based on the sideline synchronization signal block, or the at least one sideline synchronization signal block occupies a first type of resource, or the resource of the first sideline signal group is associated with the first type identifier.

As an example, the third receiver 1110 and the fourth receiver 1120 may be a transceiver 1330. The second node 1100 may also include a processor 1310 and a memory 1320, as shown in particular in fig. 13.

Fig. 12 is a third node for wireless communication according to an embodiment of the present application. As shown in fig. 12, the third node 1200 includes a second transmitter 1210.

A second transmitter 1210 operable to transmit first information, the first information being used to determine a plurality of sidestream signal resources; wherein the plurality of sidestream signal resources are associated with a plurality of first type identifications, a first identification being one of the plurality of first type identifications, the first identification being associated with a first node receiving the first information, the first identification being used by the first node to determine a first sidestream signal resource from the plurality of sidestream signal resources to transmit a first sidestream signal group.

As one embodiment, the first sidelink signal group is used for at least one of sidelink initial beam pairing, sidelink unicast link establishment and sidelink beam management.

As an embodiment, the first set of side row signals comprises at least one side row signal, any of the first set of side row signals being a side row synchronization signal block.

As an embodiment, the third node 1200 further comprises a third transmitter operable to transmit the second information; wherein the second information is used to indicate that the plurality of sidestream signal resources are associated with the plurality of first type identifications.

As one embodiment, the first information includes at least one of a transmission period, a time allocation, and a frequency domain location, which is used to determine the plurality of sidelobe signal resources.

As an embodiment, any side line signal resource of the plurality of side line signal resources includes a plurality of side line signal sub-resources, and the plurality of side line signal sub-resources all correspond to at least one of the same transmission period, the same time allocation, and the same frequency domain position.

As an embodiment, the first information includes a plurality of time allocations, any one of the plurality of time allocations being used to indicate at least one of a time offset of one of the plurality of sideline signal resources, a time interval of one of the plurality of sideline signal resources, and a number of sideline signal sub-resources comprised by one of the plurality of sideline signal resources.

As an embodiment, at least two sideline signal resources of the plurality of sideline signal resources correspond to a same transmission period, time allocations of the at least two sideline signal resources are different, and/or frequency domain positions of the at least two sideline signal resources are different.

As an embodiment, the frequency domain position of any of the plurality of sidelink signal resources comprises an absolute frequency domain position of the sidelink signal resource or a frequency offset of the sidelink signal resource with respect to a reference frequency domain position.

As an embodiment, the first sideline signal group includes at least one sideline synchronization signal block, and the node corresponding to the first type identifier supports sideline initial beam pairing and/or sideline unicast link establishment and/or sideline beam management based on the sideline synchronization signal block, or the at least one sideline synchronization signal block occupies a first type of resource, or the resource of the first sideline signal group is associated with the first type identifier.

The second transmitter 1210 may be a transceiver 1330. Third node 1200 may also include a processor 1210 and a memory 1220, as particularly shown in fig. 13.

Fig. 13 is a schematic structural diagram of a communication device of an embodiment of the present application. The dashed lines in fig. 13 indicate that the unit or module is optional. The apparatus 1300 may be used to implement the methods described in the method embodiments above. The apparatus 1300 may be a chip, a user device, or a network device.

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

The apparatus 1300 may also include one or more memories 1320. The memory 1320 has stored thereon a program that can be executed by the processor 1310 to cause the processor 1310 to perform the method described in the method embodiments above. The memory 1320 may be separate from the processor 1310 or may be integrated in the processor 1310.

The apparatus 1300 may also include a transceiver 1330. Processor 1310 may communicate with other devices or chips through transceiver 1330. For example, the processor 1310 may transmit and receive data to and from other devices or chips through the transceiver 1330.

Fig. 14 is a schematic diagram of a hardware module of a communication device according to an embodiment of the present application. In particular, fig. 14 shows a block diagram of a first communication device 1450 and a second communication device 1410 in communication with each other in an access network.

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.

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.

In the transmission from the second communication device 1410 to the first communication device 1450, upper layer packets from the core network or upper layer packets from the data source 1477 are provided to the controller/processor 1475 at the second communication device 1410. The core network and data source 1477 represent all protocol layers above the L2 layer. The controller/processor 1475 implements the functionality of the L2 layer. In transmission from the second communication device 1410 to the first communication device 1450, a controller/processor 1475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocations to the first communication device 1450 based on various priority metrics. The controller/processor 1475 is also responsible for retransmission of lost packets and signaling to the first communication device 1450. The transmit processor 1416 and the multi-antenna transmit processor 1471 implement various signal processing functions for the Ll layer (i.e., physical layer). A transmit processor 1416 performs coding and interleaving to facilitate forward error correction at the second communication device 1410, as well as mapping of signal clusters based on various modulation schemes (e.g., binary phase shift keying, quadrature phase shift keying, M-quadrature amplitude modulation). A multi-antenna transmit processor 1471 performs digital spatial precoding on the encoded and modulated symbols, including codebook-based precoding and non-codebook-based precoding, and beamforming processing, generating one or more spatial streams. A transmit processor 1416 then maps each spatial stream to a subcarrier, multiplexes with reference signals (e.g., pilots) 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. A 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 multicarrier symbol stream provided by the multiple antenna transmit processor 1471 into a radio frequency stream that is then provided to a different antenna 1420.

In a transmission from the second communication device 1410 to the first communication device 1450, at the first communication device 1450, each receiver 1454 receives signals through its respective antenna 1452. Each receiver 1454 recovers information modulated onto a radio frequency carrier and converts the radio frequency stream into a baseband multicarrier symbol stream that is provided to a receive processor 1456. The receive processor 1456 and the multi-antenna receive processor 1458 implement various signal processing functions of the Ll layer. The multi-antenna receive processor 1458 performs receive analog precoding/beamforming operations on the baseband multi-carrier symbol streams from the receiver 1454. The receive processor 1456 converts the baseband multicarrier symbol stream after receiving the analog precoding/beamforming operation from the time domain to the frequency domain using a fast fourier transform. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receive processor 1456, wherein the reference signal is to be used for channel estimation, and the data signal is subjected to multi-antenna detection in the multi-antenna receive processor 1458 to recover any spatial streams destined for said first communication device 1450. The symbols on each spatial stream are demodulated and recovered in a receive processor 1456, and soft decisions are generated. A receive processor 1456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals that were transmitted by the second communication device 1410 on the physical channel. The upper layer data and control signals are then provided to a controller/processor 1459. The controller/processor 1459 performs the functions of the L2 layer. The controller/processor 1459 can be associated with a memory 1460 that stores program codes and data. Memory 1460 may be referred to as a computer-readable medium. In the 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, control signal processing to recover upper layer data packets from the second communication device 1410. The upper layer packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.

In the transmission from the first communication device 1450 to the second communication device 1410, an upper layer data packet is provided to a controller/processor 1459 using a data source 1467 at the first communication device 1450. Data source 1467 represents all protocol layers above the L2 layer. Similar to the transmit function at the second communication device 1410 described in the transmission from the second communication device 1410 to the first communication 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 the user and control planes. The controller/processor 1459 is also responsible for retransmission of lost packets and signaling to the second communication device 1410. The transmit processor 1468 performs modulation mapping, channel coding, and digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming, by the multi-antenna transmit processor 1457, and the transmit processor 1468 then modulates the resulting spatial streams into multi-carrier/single-carrier symbol streams, which are analog precoded/beamformed in the multi-antenna transmit processor 1457 and provided to the various 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 radio frequency symbol stream and provides it to the antenna 1452.

In the transmission from the first communication device 1450 to the second communication device 1410, the function at the second communication device 1410 is similar to the receiving function at the first communication device 1450 described in the transmission from the second communication device 1410 to the first communication device 1450. Each receiver 1418 receives radio frequency signals through its respective antenna 1420, converts the received radio frequency signals to baseband signals, and provides the baseband signals 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 functions of the Ll layer. The controller/processor 1475 implements L2 layer functionality. A controller/processor 1475 can be associated with a memory 1476 that stores program codes and data. Memory 1476 may be referred to as a computer-readable medium. In the transmission from the first communication device 1450 to the second communication device 1410, a controller/processor 1475 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover upper layer data packets from the first communication device 1450. Upper layer packets from controller/processor 1475 may be provided to all protocol layers above the core network or L2 layer, and various control signals may be provided to the core network or L3 for L3 processing.

As an embodiment, the first communication device 1450 means comprises: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus to perform at least: receiving first information, the first information being used to determine a plurality of sidestream signal resources; transmitting a first set of side-signal on a first side-signal resource; wherein the plurality of sideline signal resources are associated with a plurality of identifiers of a first type, the first identifier being one of the plurality of identifiers of the first type, the first identifier being associated with the first node, the first identifier being used to determine the first sideline signal resource from the plurality of sideline signal resources.

As an embodiment, the first communication device 1450 means comprises: a memory storing a program of computer-readable instructions that, when executed by at least one processor, produce acts comprising: receiving first information, the first information being used to determine a plurality of sidestream signal resources; transmitting a first set of side-signal on a first side-signal resource; wherein the plurality of sideline signal resources are associated with a plurality of identifiers of a first type, the first identifier being one of the plurality of identifiers of the first type, the first identifier being associated with the first node, the first identifier being used to determine the first sideline signal resource from the plurality of sideline signal resources.

As an embodiment, the first communication device 1450 corresponds to a first node or a second node in the present application.

As an embodiment, the second communication device 1410 corresponds to a third node in the present application.

As an embodiment, the first communication device 1450 is a user equipment, which may act as a relay node.

As an embodiment, the first communication device 1450 is a V2X-enabled user device, which may act as a relay node.

As an embodiment, the first communication device 1450 is a D2D enabled user device, which may act as a relay node.

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

As an example, the first communication device 1450 is a relay wireless repeater.

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

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

As an embodiment, the first communication device 1450 corresponds to a first node or a 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 is used for receiving the first information in the present application.

As an embodiment, the first communication device 1450 corresponds to a 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 is configured to transmit a first side-stream signal group in the present application.

As an embodiment, the first communication device 1450 corresponds to a 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 is configured to perform receiving of at least one side signal of the first side signal group in the present application.

As one example, the antenna 1420, the transmitter 1418, the multi-antenna transmit processor 1471, the transmit processor 1416, the controller/processor 1475 are used to transmit the first information in this application.

The embodiment of the application also provides a computer readable storage medium for storing a program. The computer-readable storage medium may be applied to a terminal or a network device provided in the embodiments of the present application, and the program causes a computer to execute the method performed by the terminal or the network device in the embodiments of the present application.

Embodiments of the present application also provide a computer program product. The computer program product includes a program. The computer program product may be applied to a terminal or a network device provided in embodiments of the present application, and the program causes a computer to perform the methods performed by the terminal or the network device in the embodiments of the present application.

The embodiment of the application also provides a computer program. The computer program may be applied to a terminal or a network device provided in embodiments of the present application, and cause a computer to perform the methods performed by the terminal or the network device in the embodiments of the present application.

It should be understood that the terms "system" and "network" may be used interchangeably in this application. In addition, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. The terms "first," "second," "third," and "fourth" and the like in the description and in the claims of this application and in the drawings, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiment of the present application, the "indication" may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B.

In the embodiment of the present application, "B corresponding to a" means that B is associated with a, from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.

In the embodiment of the present application, the term "corresponding" may indicate that there is a direct correspondence or an indirect correspondence between the two, or may indicate that there is an association between the two, or may indicate a relationship between the two and the indicated, configured, or the like.

In the embodiment of the present application, the "pre-defining" or "pre-configuring" may be implemented by pre-storing corresponding codes, tables or other manners that may be used to indicate relevant information in a device (including, for example, a user device and a network device), and the specific implementation manner is not limited in this application. Such as predefined may refer to what is defined in the protocol.

In this embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, may include an LTE protocol, an NR protocol, and related protocols applied in a future communication system, which is not limited in this application.

In the embodiment of the present application, the term "and/or" is merely an association relationship describing the association object, which indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In various embodiments of the present application, the sequence number of each process does not mean the sequence of execution, and the execution sequence 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.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may 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 loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may 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 may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be read by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital versatile disk (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (66)

1. A method in a first node for wireless communication, comprising:

receiving first information, the first information being used to determine a plurality of sidestream signal resources;

transmitting a first set of side-signal on a first side-signal resource;

wherein the plurality of sideline signal resources are associated with a plurality of identifiers of a first type, the first identifier being one of the plurality of identifiers of the first type, the first identifier being associated with the first node, the first identifier being used to determine the first sideline signal resource from the plurality of sideline signal resources.

2. The method of claim 1, wherein the first set of sidelink signals is used for at least one of sidelink initial beam pairing, sidelink unicast link establishment, and sidelink beam management.

3. The method according to claim 1 or 2, wherein the first set of side row signals comprises at least one side row signal, any side row signal of the first set of side row signals being a side row synchronization signal block.

4. A method according to any one of claims 1-3, comprising:

receiving second information;

wherein the second information is used to indicate that the plurality of sidestream signal resources are associated with the plurality of first type identifications.

5. The method of any of claims 1-4, wherein the first information comprises at least one of a transmission period, a time allocation, and a frequency domain location, the at least one of a transmission period, the time allocation, and the frequency domain location being used to determine the plurality of sidelobe signal resources.

6. The method of any of claims 1-5, wherein any of the plurality of side-row signal resources comprises a plurality of side-row signal sub-resources, each corresponding to at least one of a same transmission period, a same time allocation, and a same frequency domain location.

7. The method of claim 5 or 6, wherein the first information comprises a plurality of time allocations, any one of the plurality of time allocations being used to indicate at least one of a time offset for one of the plurality of sideline signal resources, a time interval for one of the plurality of sideline signal resources, and a number of sideline signal sub-resources comprised by one of the plurality of sideline signal resources.

8. The method according to any of claims 5-7, wherein at least two of the plurality of sideline signal resources correspond to a same transmission period, wherein the time allocations of the at least two sideline signal resources are different, and/or wherein the frequency domain locations of the at least two sideline signal resources are different.

9. The method of any of claims 5-8, wherein the frequency domain location of any of the plurality of side-row signal resources comprises an absolute frequency domain location of the side-row signal resource or a frequency offset of the side-row signal resource relative to a reference frequency domain location.

10. The method according to any of claims 1-9, wherein the first sideline signal group comprises at least one sideline synchronization signal block, wherein the node corresponding to the first class identification supports sideline initial beam pairing and/or sideline unicast link establishment and/or sideline beam management based on the sideline synchronization signal block, or wherein the at least one sideline synchronization signal block occupies a first class resource, or wherein the resource of the first sideline signal group is associated with the first class identification.

11. A method in a second node for wireless communication, comprising:

Receiving first information, the first information being used to determine a plurality of sidestream signal resources;

receiving at least one side signal in a first side signal group on a first side signal resource;

wherein the plurality of sidestream signal resources are associated with a plurality of first type identifications, a first identification being one of the plurality of first type identifications, the first identification being related to the first sidestream signal resources, the first identification being used to determine a first node transmitting the one or more sidestream signals.

12. The method of claim 11, wherein the first sidelink signal group is used for at least one of sidelink initial beam pairing, sidelink unicast link establishment, and sidelink beam management.

13. The method of claim 11 or 12, wherein the first set of side row signals comprises at least one side row signal, and wherein either side row signal in the first set of side row signals is a side row synchronization signal block.

14. The method according to any one of claims 11-13, comprising:

receiving second information;

wherein the second information is used to indicate that the plurality of sidestream signal resources are associated with the plurality of first type identifications.

15. The method of any of claims 11-14, wherein the first information comprises at least one of a transmission period, a time allocation, and a frequency domain location, the at least one of a transmission period, the time allocation, and the frequency domain location being used to determine the plurality of sidelobe signal resources.

16. The method of any of claims 11-15, wherein any of the plurality of side-row signal resources comprises a plurality of side-row signal sub-resources, each corresponding to at least one of a same transmission period, a same time allocation, and a same frequency domain location.

17. The method of claim 15 or 16, wherein the first information comprises a plurality of time allocations, any one of the plurality of time allocations being used to indicate at least one of a time offset for one of the plurality of sideline signal resources, a time interval for one of the plurality of sideline signal resources, and a number of sideline signal sub-resources comprised by one of the plurality of sideline signal resources.

18. The method according to any of claims 15-17, wherein at least two of the plurality of sideline signal resources correspond to a same transmission period, wherein the time allocations of the at least two sideline signal resources are different, and/or wherein the frequency domain locations of the at least two sideline signal resources are different.

19. The method of any of claims 15-18, wherein the frequency domain location of any of the plurality of side-row signal resources comprises an absolute frequency domain location of the side-row signal resource or a frequency offset of the side-row signal resource relative to a reference frequency domain location.

20. The method according to any of claims 11-19, wherein the first sideline signal group comprises at least one sideline synchronization signal block, wherein the node corresponding to the first class identification supports sideline initial beam pairing and/or sideline unicast link establishment and/or sideline beam management based on the sideline synchronization signal block, or wherein the at least one sideline synchronization signal block occupies a first class resource, or wherein the resource of the first sideline signal group is associated with the first class identification.

21. A method in a third node for wireless communication, comprising:

transmitting first information, the first information being used to determine a plurality of sidestream signal resources;

wherein the plurality of sidestream signal resources are associated with a plurality of first type identifications, a first identification being one of the plurality of first type identifications, the first identification being associated with a first node receiving the first information, the first identification being used by the first node to determine a first sidestream signal resource from the plurality of sidestream signal resources to transmit a first sidestream signal group.

22. The method of claim 21, wherein the first set of sidelink signals is used for at least one of sidelink initial beam pairing, sidelink unicast link establishment, and sidelink beam management.

23. The method of claim 21 or 22, wherein the first set of side row signals comprises at least one side row signal, and wherein either side row signal in the first set of side row signals is a side row synchronization signal block.

24. The method according to any one of claims 21-23, comprising:

transmitting second information;

wherein the second information is used to indicate that the plurality of sidestream signal resources are associated with the plurality of first type identifications.

25. The method of any of claims 21-24, wherein the first information comprises at least one of a transmission period, a time allocation, and a frequency domain location, the at least one of a transmission period, the time allocation, and the frequency domain location being used to determine the plurality of sidelobe signal resources.

26. The method of any of claims 21-25, wherein any of the plurality of side-row signal resources comprises a plurality of side-row signal sub-resources, each corresponding to at least one of a same transmission period, a same time allocation, and a same frequency domain location.

27. The method of claim 25 or 26, wherein the first information comprises a plurality of time allocations, any one of the plurality of time allocations being used to indicate at least one of a time offset for one of the plurality of sideline signal resources, a time interval for one of the plurality of sideline signal resources, and a number of sideline signal sub-resources comprised by one of the plurality of sideline signal resources.

28. The method according to any of claims 25-27, wherein at least two of the plurality of sideline signal resources correspond to a same transmission period, wherein the time allocations of the at least two sideline signal resources are different, and/or wherein the frequency domain locations of the at least two sideline signal resources are different.

29. The method of any of claims 25-28, wherein the frequency domain location of any of the plurality of side-row signal resources comprises an absolute frequency domain location of the side-row signal resource or a frequency offset of the side-row signal resource relative to a reference frequency domain location.

30. The method according to any of claims 21-29, wherein the first sideline signal group comprises at least one sideline synchronization signal block, wherein the node corresponding to the first class identification supports sideline initial beam pairing and/or sideline unicast link establishment and/or sideline beam management based on the sideline synchronization signal block, or wherein the at least one sideline synchronization signal block occupies a first class resource, or wherein the resource of the first sideline signal group is associated with the first class identification.

31. A first node for wireless communication, comprising:

a first receiver for receiving first information, the first information being used to determine a plurality of sidestream signal resources;

a first transmitter for transmitting a first set of side-line signals on a first side-line signal resource;

wherein the plurality of sideline signal resources are associated with a plurality of identifiers of a first type, the first identifier being one of the plurality of identifiers of the first type, the first identifier being associated with the first node, the first identifier being used to determine the first sideline signal resource from the plurality of sideline signal resources.

32. The first node of claim 31, wherein the first sidelink signal group is used for at least one of sidelink initial beam pairing, sidelink unicast link establishment, and sidelink beam management.

33. The first node of claim 31 or 32, wherein the first set of side row signals comprises at least one side row signal, any side row signal in the first set of side row signals being a side row synchronization signal block.

34. The first node according to any of claims 31-33, comprising:

A second receiver for receiving second information;

wherein the second information is used to indicate that the plurality of sidestream signal resources are associated with the plurality of first type identifications.

35. The first node of any of claims 31-34, wherein the first information comprises at least one of a transmission period, a time allocation, and a frequency domain location, the at least one of a transmission period, the time allocation, and the frequency domain location being used to determine the plurality of sidelobe signal resources.

36. The first node of any of claims 31-35, wherein any of the plurality of sidelink signal resources comprises a plurality of sidelink signal sub-resources, each of the plurality of sidelink signal sub-resources corresponding to at least one of a same transmission cycle, a same time allocation, and a same frequency domain location.

37. The first node of claim 35 or 36, wherein the first information comprises a plurality of time allocations, any one of the plurality of time allocations being used to indicate at least one of a time offset for one of the plurality of sidelink signal resources, a time interval for one of the plurality of sidelink signal resources, and a number of sidelink signal sub-resources comprised by one of the plurality of sidelink signal resources.

38. The first node according to any of claims 35-37, wherein at least two of the plurality of sidelink signal resources correspond to a same transmission cycle, wherein the time allocations of the at least two sidelink signal resources are different, and/or wherein the frequency domain locations of the at least two sidelink signal resources are different.

39. The first node of any of claims 35-38, wherein the frequency domain location of any of the plurality of sidelink signal resources comprises an absolute frequency domain location of the sidelink signal resource or a frequency offset of the sidelink signal resource from a reference frequency domain location.

40. The first node according to any of claims 31-39, wherein the first sideline signal group comprises at least one sideline synchronization signal block, wherein the node corresponding to the first class identification supports sideline initial beam pairing and/or sideline unicast link establishment and/or sideline beam management based on the sideline synchronization signal block, or wherein the at least one sideline synchronization signal block occupies a first class resource, or wherein the resource of the first sideline signal group is associated with the first class identification.

41. A second node for wireless communication, comprising:

a third receiver for receiving first information, the first information being used to determine a plurality of sidestream signal resources;

a fourth receiver for receiving at least one side signal of the first side signal group on the first side signal resource;

wherein the plurality of sidestream signal resources are associated with a plurality of first type identifications, a first identification being one of the plurality of first type identifications, the first identification being related to the first sidestream signal resources, the first identification being used to determine a first node transmitting the one or more sidestream signals.

42. The second node of claim 41, wherein the first sidelink signal group is used for at least one of sidelink initial beam pairing, sidelink unicast link establishment and sidelink beam management.

43. The second node according to claim 41 or 42, wherein the first set of side row signals comprises at least one side row signal, any side row signal of the first set of side row signals being a side row synchronization signal block.

44. The second node according to any of claims 41-43, comprising:

A fifth receiver for receiving the second information;

wherein the second information is used to indicate that the plurality of sidestream signal resources are associated with the plurality of first type identifications.

45. The second node according to any of claims 41-44, wherein the first information comprises at least one of a transmission period, a time allocation and a frequency domain location, the at least one of a transmission period, the time allocation and the frequency domain location being used to determine the plurality of sidelobe signal resources.

46. The second node according to any of claims 41-45, wherein any of the plurality of sidelink signal resources comprises a plurality of sidelink signal sub-resources, each of the plurality of sidelink signal sub-resources corresponding to at least one of a same transmission cycle, a same time allocation, and a same frequency domain location.

47. The second node according to claim 45 or 46, wherein the first information comprises a plurality of time allocations, any one of the plurality of time allocations being used to indicate at least one of a time offset for one of the plurality of sidelink signal resources, a time interval for one of the plurality of sidelink signal resources, a number of sidelink signal sub-resources comprised by one of the plurality of sidelink signal resources.

48. The second node according to any of claims 45-47, wherein at least two of the plurality of sidelink signal resources correspond to a same transmission cycle, wherein the time allocations of the at least two sidelink signal resources are different, and/or wherein the frequency domain locations of the at least two sidelink signal resources are different.

49. The second node according to any of claims 45-48, wherein the frequency domain location of any of the plurality of sidelobe signal resources comprises an absolute frequency domain location of the sidelobe signal resource or a frequency offset of the sidelobe signal resource from a reference frequency domain location.

50. The second node according to any of claims 41-49, wherein the first sideline signal group comprises at least one sideline synchronization signal block, wherein the node corresponding to the first class identity supports sideline initial beam pairing and/or sideline unicast link establishment and/or sideline beam management based on the sideline synchronization signal block, or wherein the at least one sideline synchronization signal block occupies a first class of resources, or wherein the resources of the first sideline signal group are associated with the first class identity.

51. A third node for wireless communication, comprising:

a second transmitter for transmitting first information, the first information being used to determine a plurality of sidestream signal resources;

wherein the plurality of sidestream signal resources are associated with a plurality of first type identifications, a first identification being one of the plurality of first type identifications, the first identification being associated with a first node receiving the first information, the first identification being used by the first node to determine a first sidestream signal resource from the plurality of sidestream signal resources to transmit a first sidestream signal group.

52. The third node of claim 51 wherein the first sidelink signal group is used for at least one of sidelink initial beam pairing, sidelink unicast link establishment and sidelink beam management.

53. The third node of claim 51 or 52 wherein the first set of side row signals includes at least one side row signal, any side row signal in the first set of side row signals being a side row synchronization signal block.

54. The third node according to any of claims 51-53, comprising:

a third transmitter for transmitting the second information;

Wherein the second information is used to indicate that the plurality of sidestream signal resources are associated with the plurality of first type identifications.

55. The third node of any of claims 51-54, wherein the first information comprises at least one of a transmission period, a time allocation, and a frequency domain location, the at least one of a transmission period, the time allocation, and the frequency domain location being used to determine the plurality of sidelobe signal resources.

56. The third node of any of claims 51-55, wherein any of the plurality of sidelink signal resources comprises a plurality of sidelink signal sub-resources, each of the plurality of sidelink signal sub-resources corresponding to at least one of a same transmission cycle, a same time allocation, and a same frequency domain location.

57. The third node of claim 55 or 56, wherein the first information comprises a plurality of time allocations, any one of the plurality of time allocations being used to indicate at least one of a time offset for one of the plurality of sideline signal resources, a time interval for one of the plurality of sideline signal resources, and a number of sideline signal sub-resources comprised by one of the plurality of sideline signal resources.

58. The third node according to any of claims 55-57, wherein at least two of the plurality of sidelink signal resources correspond to a same transmission cycle, wherein the time allocations of the at least two sidelink signal resources are different, and/or wherein the frequency domain locations of the at least two sidelink signal resources are different.

59. The third node of any of claims 55-58, wherein the frequency domain location of any of the plurality of sidelink signal resources comprises an absolute frequency domain location of the sidelink signal resource or a frequency offset of the sidelink signal resource from a reference frequency domain location.

60. The third node according to any of claims 51-59, wherein the first sideline signal group comprises at least one sideline synchronization signal block, wherein the node corresponding to the first class identification supports sideline initial beam pairing and/or sideline unicast link establishment and/or sideline beam management based on the sideline synchronization signal block, or wherein the at least one sideline synchronization signal block occupies a first class resource, or wherein the resource of the first sideline signal group is associated with the first class identification.

61. A node for wireless communication, comprising a transceiver, a memory for storing a program, and a processor for calling the program in the memory and controlling the transceiver to receive or transmit signals to cause the node to perform the method of any of claims 1-10 or 11-20 or 21-30.

62. An apparatus comprising a processor to invoke a program from memory to cause the apparatus to perform the method of any of claims 1-10 or 11-20 or 21-30.

63. A chip comprising a processor for calling a program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1-10 or 11-20 or 21-30.

64. A computer-readable storage medium, having stored thereon a program that causes a computer to perform the method of any one of claims 1-10 or 11-20 or 21-30.

65. A computer program product comprising a program for causing a computer to perform the method of any one of claims 1-10 or 11-20 or 21-30.

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