CN118945819A - Transmission processing method, sidelink resource determination method, device and equipment terminal - Google Patents

Abstract

The application discloses a transmission processing method, a side link resource determining device and a device terminal, belonging to the technical field of communication, wherein the method of the embodiment of the application comprises the following steps: the first terminal obtains the first resource through at least one of the following modes: determining based on the first resource selection related information; based on a predefined or preconfigured determination; determining based on a configuration of the control node; determining based on the high-level configuration; determining based on inter-terminal negotiation; monitoring or detecting candidate resources; randomly selecting from candidate resources; the first terminal transmits a first reference signal on the first resource, the first reference signal being used for at least one of beam training, beam measurement and beam scanning.

Description

Transmission processing method, side link resource determining method, device and equipment terminal

Technical Field

The present application belongs to the field of communication technologies, and in particular, to a transmission processing method, a method, an apparatus and a device terminal for determining a side link resource.

Background

The initial beam training with the reference signal may reduce the number of repeated transmissions of the direct communication request DCR with beam scanning prior to the establishment of the direct communication connection. Beam management (beam measurement or beam scanning) with reference signals after the direct communication connection is established can help maintain reliable beams for communication.

However, since a terminal of a sidelink (or sidelink, etc.) may autonomously select a transmitted resource, there is a collision of related resources of a reference signal, such as a collision of resources of a different terminal selecting to transmit the reference signal, or a collision of resources of a terminal selecting to transmit the reference signal with resources reported by a channel state Information reference signal (CHANNEL STATE Information REFERENCE SIGNAL, CSI-RS), etc.

Disclosure of Invention

The embodiment of the application provides a transmission processing method, a side link resource determining device and a device terminal, which can solve the problem of resource conflict in beam training or management.

In a first aspect, a transmission processing method is provided, the method including:

The first terminal obtains the first resource through at least one of the following modes:

determining based on the first resource selection related information;

based on a predefined or preconfigured determination;

determining based on a configuration of the control node;

Determining based on the high-level configuration;

Determining based on inter-terminal negotiation;

Monitoring or detecting candidate resources;

Randomly selecting from candidate resources;

the first terminal transmits a first reference signal on the first resource, the first reference signal being used for at least one of beam training, beam measurement and beam scanning.

In a second aspect, there is provided a transmission processing method, the method comprising:

the second terminal receives a first reference signal transmitted by the first terminal on a first resource, the first reference signal being used for at least one of beam training, beam measurement, and beam scanning.

In a third aspect, a method for determining a sidelink resource is provided, including:

the terminal determines PSFCH resources according to the mapping rule of the physical side link feedback channel PSFCH;

Wherein the PSFCH mapping rules satisfy at least one of:

PSFCH mapping is carried out in M PSFCH periods, wherein M is an integer not less than 1;

The P sub-channels correspond to the same PSFCH resources;

The position of PSFCH PRB is determined first and then PSFCH PRB is extended onto the interface.

In a fourth aspect, there is provided a transmission processing apparatus including:

a first processing module, configured to obtain a first resource by at least one of:

determining based on the first resource selection related information;

based on a predefined or preconfigured determination;

determining based on a configuration of the control node;

Determining based on the high-level configuration;

Determining based on inter-terminal negotiation;

Monitoring or detecting candidate resources;

Randomly selecting from candidate resources;

A first transmitting module configured to transmit a first reference signal on the first resource, where the first reference signal is used for at least one of beam training, beam measurement, and beam scanning.

In a fifth aspect, there is provided a transmission processing apparatus including:

And the first receiving module is used for receiving a first reference signal transmitted by the first terminal on the first resource, wherein the first reference signal is used for at least one of beam training, beam measurement and beam scanning.

In a sixth aspect, there is provided a sidelink resource determining apparatus, comprising:

A second processing module, configured to determine PSFCH resources according to a mapping rule of the physical sidelink feedback channel PSFCH;

Wherein the PSFCH mapping rules satisfy at least one of:

PSFCH mapping is carried out in M PSFCH periods, wherein M is an integer not less than 1;

The P sub-channels correspond to the same PSFCH resources;

The position of PSFCH PRB is determined first and then PSFCH PRB is extended onto the interface.

In a seventh aspect, there is provided a terminal comprising a processor and a memory storing a program or instructions executable on the processor, the program or instructions implementing the steps of the method according to the first aspect, or implementing the steps of the method according to the second aspect, or implementing the steps of the method according to the third aspect when executed by the processor.

An eighth aspect provides a terminal, including a processor and a communication interface, where the processor is configured to obtain a first resource by at least one of:

determining based on the first resource selection related information;

based on a predefined or preconfigured determination;

determining based on a configuration of the control node;

Determining based on the high-level configuration;

Determining based on inter-terminal negotiation;

Monitoring or detecting candidate resources;

Randomly selecting from candidate resources;

the communication interface is to transmit a first reference signal on the first resource, the first reference signal being for at least one of beam training, beam measurement, and beam scanning.

In a ninth aspect, a terminal is provided that includes a processor and a communication interface, where the communication interface is configured to receive a first reference signal transmitted by a first terminal on a first resource, where the first reference signal is used for at least one of beam training, beam measurement, and beam scanning.

In a tenth aspect, a terminal is provided, including a processor and a communication interface, where the processor is configured to determine PSFCH resources according to a mapping rule of a physical sidelink feedback channel PSFCH;

Wherein the PSFCH mapping rules satisfy at least one of:

PSFCH mapping is carried out in M PSFCH periods, wherein M is an integer not less than 1;

The P sub-channels correspond to the same PSFCH resources;

The location of PSFCH physical resource blocks PRBs is determined first and then PSFCH PRB is extended over the interleaving block interlace.

In an eleventh aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor, performs the steps of the method as described in the first aspect, or performs the steps of the method as described in the second aspect, or performs the steps of the method as described in the third aspect.

In a twelfth aspect, there is provided a wireless communication system comprising: a terminal operable to perform the steps of the method as described in the first aspect, or to implement the steps of the method as described in the second aspect, or to implement the steps of the method as described in the third aspect.

In a thirteenth aspect, there is provided a chip comprising a processor and a communication interface coupled to the processor, the processor being adapted to run a program or instructions to implement the method according to the first aspect, or to implement the method according to the second aspect, or to implement the method according to the third aspect.

In a fourteenth aspect, there is provided a computer program/program product stored in a storage medium, the program/program product being executable by at least one processor to perform the steps of the method as described in the first aspect, or to perform the steps of the method as described in the second aspect, or to perform the steps of the method as described in the third aspect.

In the embodiment of the application, the first terminal obtains the first resource by adopting at least one of the following modes: based on the first resource selection related information, based on the predefined or preconfigured determination, based on the configuration determination of the control node, based on the higher-layer configuration determination, based on the inter-terminal negotiation determination, monitoring or detecting the candidate resource, and randomly selecting the candidate resource; therefore, the first reference signal used for at least one of beam training, beam measurement and beam scanning can be transmitted on the obtained first resource, and thus, the problem of resource conflict in beam training or management is solved as the obtained first resource is largely avoided from being the same as other terminals.

Drawings

Fig. 1 is a block diagram of a wireless communication system;

FIG. 2 is a flow chart of a transmission processing method according to an embodiment of the application;

FIG. 3 is one of the application schematics of the method of the embodiment of the present application;

FIG. 4 is a second schematic diagram of an application of the method according to the embodiment of the present application;

FIG. 5 is a third application of the method according to the embodiment of the present application;

FIG. 6 is a fourth application diagram of the method of the embodiment of the present application;

FIG. 7 is a fifth application diagram of the method of the embodiment of the present application;

FIG. 8 is a second flow chart of a transmission processing method according to an embodiment of the application;

fig. 9 is a flow chart of a sidelink resource determination method according to an embodiment of the present application;

FIG. 10 is a schematic block diagram of the apparatus corresponding to FIG. 2;

FIG. 11 is a schematic block diagram of the apparatus corresponding to FIG. 8;

FIG. 12 is a schematic block diagram of the apparatus corresponding to FIG. 9;

fig. 13 is a schematic structural view of a communication device according to an embodiment of the present application;

fig. 14 is a schematic structural view of a terminal according to an embodiment of the present application.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below 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 are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.

The terms "first," "second," and the like, herein, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the "first" and "second" distinguishing between objects generally are not limited in number to the extent that the first object may, for example, be one or more. Furthermore, the "or" in the present application means at least one of the connected objects. For example, "a or B" encompasses three schemes, scheme one: including a and excluding B; scheme II: including B and excluding a; scheme III: both a and B. The character "/" generally indicates that the context-dependent object is an "or" relationship.

The term "indication" according to the application may be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). The direct indication may be understood that the sender explicitly informs the specific information of the receiver, the operation to be executed, the request result, and other contents in the sent indication; the indirect indication may be understood as that the receiving side determines corresponding information according to the indication sent by the sending side, or determines and determines an operation or a request result to be executed according to a determination result.

It should be noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single-carrier frequency division multiple access (Single-carrier Frequency-Division Multiple Access, SC-FDMA), or other systems. The terms "system" and "network" in embodiments of the application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New Radio (NR) system for exemplary purposes and NR terminology is used in much of the following description, but the techniques may also be applied to systems other than NR systems, such as the 6 th Generation (6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a Mobile phone, a tablet Computer (Tablet Personal Computer), a Laptop (Laptop Computer), a notebook (Personal DIGITAL ASSISTANT, PDA), a palm Computer, a netbook, an Ultra-Mobile Personal Computer (Ultra-Mobile Personal Computer, UMPC), a Mobile internet device (Mobile INTERNET DEVICE, MID), a Personal Digital Assistant (PDA), Augmented Reality (Augmented Reality, AR), virtual Reality (VR) devices, robots, wearable devices (Wearable Device), aircraft (FLIGHT VEHICLE), in-vehicle devices (Vehicle User Equipment, VUE), on-board equipment, pedestrian terminals (PEDESTRIAN USER EQUIPMENT, PUE), smart home (home appliances having wireless communication function, such as refrigerator, television, washing machine or furniture, etc.), game machine, personal computer (Personal Computer, PC), teller machine or self-service machine, etc. The wearable device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. The in-vehicle apparatus may also be referred to as an in-vehicle terminal, an in-vehicle controller, an in-vehicle module, an in-vehicle component, an in-vehicle chip, an in-vehicle unit, or the like. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may include an access network device or core network device, where the access network device may also be referred to as a radio access network (Radio Access Network, RAN) device, a radio access network function, or a radio access network element. The Access network device may include a base station, a wireless local area network (Wireless Local Area Network, WLAN) Access Point (AP), or a wireless fidelity (WIRELESS FIDELITY, WIFI) node, etc. among them, the base station may be called a Node B (NB), an Evolved Node B (eNB), a next generation Node B (the next generation Node B, gNB), a New air interface Node B (New Radio Node B, NR Node B), an access point, a relay station (Relay Base Station, RBS), a serving base station (Serving Base Station, SBS), a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a Basic service set (Basic SERVICE SET, BSS), an Extended service set (Extended SERVICE SET, ESS), a Home Node B (HNB), a home evolved Node B (home evolved Node B), a transmission and reception point (Transmission Reception Point, TRP) or some other suitable terminology in the field, the base station is not limited to a specific technical vocabulary as long as the same technical effect is achieved, In the embodiment of the present application, only the base station in the NR system is described as an example, and the specific type of the base station is not limited.

For ease of understanding, some of the following descriptions are directed to embodiments of the present application:

1. internet of vehicles (Vehicle to everything, V2X)

A long term evolution (Long Term Evolution, LTE) system supports Sidelink (SL) transmission, i.e., data transmission between terminals (UEs) directly on a physical layer. LTE SIDELINK are broadcast based communications and, although useful for supporting basic security class V2X communications, are not applicable to other higher level V2X services. A New air interface (NR) system will support more advanced sidelink transmission designs, such as unicast, multicast or multicast, so that more comprehensive service types can be supported.

2. Sidelink Transport Block (TB) Transport

In SL, a physical sidelink shared channel (PHYSICAL SIDELINK SHARE CHANNEL, PSSCH) is used to transmit data. The Control information associated with the PSSCH is carried in a physical side link Control Channel (PSCCH) and side link Control information (Sidelink Control Information, SCI) of the PSSCH, respectively. SCI is divided into two stages, 1 ^st stage SCI in PSCCH and 2 ^nd stage SCI in PSSCH.

3. Beam

Because of the lack of low frequency resources, 5G NR uses a high frequency band such as millimeter wave, and because propagation loss of the high frequency band is greater than that of the low frequency band, its coverage distance is inferior to that of LTE. In order to solve the problem, one solution is that 5G implements enhancement of signals by a multi-antenna Beam Forming (Beam Forming) manner, and further implements enhancement of coverage. Beamforming is currently a signal processing technique that uses an array of sensors to directionally transmit and receive signals. The beam forming technology enables signals of certain angles to obtain constructive interference and signals of other angles to obtain destructive interference by adjusting parameters of basic units of the phased array, so that an antenna beam is directed in a specific direction. The establishment of the downlink beam is generally determined by a Synchronization Signal Block (SSB) and CSI-RS reference signals. Taking SSB as an example:

Due to the narrower beam, the same SSB is sent to different directions in NR in the form of a beam by means of time division duplex (Time Division Duplexing, TDD) so that the SSB can be received by UEs in all directions. For example, within 5ms, the base station transmits multiple SSBs (corresponding to different SSB indexes (indices)) to cover different directions, respectively. The UE receives a plurality of SSB with different signal strengths and selects one strongest SSB beam as the own SSB beam.

4. Sidelink Transmission characteristics over millimeter wave (FR 2) band

The transmission path loss on the FR2 band is larger, and the transmission range is limited; furthermore, the transmission of FR2 is easily blocked by obstacles, and if a blockage blockage occurs between two UEs, the transmission signal strength between the two UEs may be greatly attenuated.

5. NR SL CSI-RS

NR SL supports aperiodic SL CSI-RS transmission. When the UE transmits data, the PSSCH of the UE can carry SL CSI-RS, and the data (data) transmission performs rate matching (RATE MATCHING) operation on SL CSI-RS resources.

The SL CSI-RS can support at most two antenna port (antenna port) transmission. The resource mapping pattern thereof multiplexes the CSI-RS pattern of NR Uu. Wherein each physical resource block (Physical Resource Block, PRB) for PSSCH transmission carries a SL CSI-RS.

6. NR CSI request (request) and CSI report

NR SL CSI request is carried by 2 ^nd stage SCI, CSI request is 1bit indication information, CSI request and SL CSI-RS are transmitted on the same PSSCH.

NR SL CSI report carries only channel quality Indication (Channel Quality Indicator, CQI) or Rank Indication (RI) information, CSI is carried by a medium access control unit (MEDIA ACCESS Control controlelement, MAC CE), transmitted on PSSCH, SL CSI needs to be transmitted in x time units after CSI request transmission, and new CSI request is not allowed to be transmitted in x time units.

7. PC 5-unicast direct communication establishment flow

In step 1, UE2, UE3 and UE4 determine the identity of target layer 2 from the representation of the V2X application layer. For UE1, the application layer may provide the application layer identity of the target UE in addition to its own application layer identity. UE1 then sends the identity of the application layer, V2X service information and security related content out via a direct communication request (Direct Communication Request, DCR) message. If UE1 knows the application layer identification and the layer 2 identification of the target UE in advance, the message is sent in a unicast mode; otherwise, the message is sent in a broadcast mode. If the DCR message contains the application layer identification of the target UE, only the target UE will respond. If there is no application layer identification of the target UE in the message, it is possible that more than one UE responds to the message, e.g. UE2 and UE4 will also respond as long as they are interested in the V2X traffic contained therein. In this case UE1 would establish a layer 2 connection with UE2 and UE4, respectively. In step 4, if the PC5 security function is successfully activated, UE1 also tells the target UE the quality of service (Quality of Service, qoS) flows and their QoS parameters to set up. If the DCR message is sent in a broadcast manner, the UE1 obtains the layer 2 identity of the target UE. In step 5, the direct communication receiving (Direct Communication Accept, DCA) message sent back by the target UE includes the application layer identifier of the source UE, QOS flow and QOS parameters, IP address, etc. of the QOS flow(s). The connection set up to this V2X layer is completed, after which the V2X layer passes the data packet along with the packet flow identifier (Packet Flow Identifier, PFI) (QOS flow identity) of this packet to the access AS layer, which sends unicast messages according to these messages.

The transmission processing method provided by the embodiment of the application is described in detail below by means of some embodiments and application scenarios thereof with reference to the accompanying drawings.

As shown in fig. 2, a transmission processing method according to an embodiment of the present application includes:

step 201, the first terminal obtains the first resource through at least one of the following ways:

determining based on the first resource selection related information;

based on a predefined or preconfigured determination;

determining based on a configuration of the control node;

Determining based on the high-level configuration;

Determining based on inter-terminal negotiation;

Monitoring or detecting candidate resources;

Randomly selecting among the candidate resources.

In this step, the first terminal is a terminal for direct communication, and the terminals for direct communication all adopt at least one mode to determine the first resource, so that the first resources among different terminals are more effectively avoided being identical.

Step 202, the first terminal transmits a first reference signal on the first resource, wherein the first reference signal is used for at least one of beam training, beam measurement and beam scanning.

In this step, the first terminal transmits the first reference signal on the first resource obtained in step 201, that is, transmits the first reference signal, where the first reference signal is used for at least one of beam training, beam measurement and beam scanning.

In this way, the first terminal obtains the first resource in at least one of the following manners: based on the first resource selection related information, based on the predefined or preconfigured determination, based on the configuration determination of the control node, based on the higher-layer configuration determination, based on the inter-terminal negotiation determination, monitoring or detecting the candidate resource, and randomly selecting the candidate resource; therefore, the first reference signal used for at least one of beam training, beam measurement and beam scanning can be transmitted on the obtained first resource, so that the problem of resource conflict in beam training or management is solved and the problem of half duplex receiving and transmitting between terminals is reduced because the obtained first resource is largely avoided from being the same as other terminals.

Optionally, the first reference signal includes, but is not limited to, a SL CSI-RS, a side link synchronization signal block (Sidelink Synchronization SIGNAL AND PBCH block, S-SSB), a PSSCH Demodulation reference signal (Demodulation REFERENCE SIGNAL, DMRS), PSCCH DMRS.

Optionally, the first resource includes a time domain or frequency domain resource that transmits the first reference signal.

Alternatively, the first resource may be a resource corresponding to the first pattern (pattern), and the first resource may be obtained by at least one of the above manners, or the first pattern may be obtained by at least one of the above manners. That is, the first pattern is obtained in at least one of the following ways: based on the first resource selection related information, based on the predefined or preconfigured determination, based on the configuration determination of the control node, based on the higher layer configuration determination, based on the inter-terminal negotiation determination, the candidate resources are monitored or detected, and the candidate resources are randomly selected.

Optionally, the first pattern includes at least one of a sequence of the first reference signal, a resource mapping of the first reference signal (e.g., antenna port number, density, spread spectrum pattern (cdm-Type), start symbol (symbol) position, frequency domain allocation (specifically, allocation of REs within one PRB), etc.), a time interval of the first reference signal (e.g., an interval between slots transmitting the first reference signal), and a bandwidth of the first reference signal.

Optionally, the first reference signal is transmitted according to a first pattern.

Optionally, the first resource selection related information includes at least one of:

the identity of the first terminal;

grouping information of the first terminal;

A direct communication request, DCR, associated with the first reference signal;

the physical side link control channel PSCCH associated with the first reference signal.

As an embodiment, the identity of the first terminal is a UE ID, and the first resource or the first pattern is determined according to the UE ID.

As an embodiment, the grouping information of the first terminal is grouping information of the first terminal after grouping different UEs, and the first resource or the first pattern is determined according to the grouping information, where UEs in the same grouping correspond to the same first resource or the first pattern.

As an embodiment, the first resource or the first pattern is determined based on the first resource selection related information, which may be a hash value or digest information or cyclic redundancy check information generated according to the first resource selection related information. For example parameters in the sequence generation of the first reference signalWherein, May be a decimal value of a cyclic redundancy check (Cyclic Redundancy Check, CRC) of the PSCCH associated with the first reference signal.

Optionally, when the control node includes a network side device or a terminal and the control node is a terminal, the control node may be a first terminal, or a terminal that directly communicates with the first terminal, or other terminals.

Optionally, the candidate resources are resources that are pre-defined or pre-configured or configured by the control node to allow for the transmission of the first reference signal.

As an embodiment, the determining the first resource or the first pattern based on the predefined or the preconfigured may be directly taking the predefined or the preconfigured resource or the pattern as the first resource or the first pattern; the first terminal may also select the first resource or the first pattern from predefined or preconfigured resources or patterns.

As one embodiment, the first resource or the first pattern is determined based on the configuration of the control node, and the resource or the pattern configured by the control node can be directly used as the first resource or the first pattern; the first terminal may select the first resource or the first pattern from the resources or patterns configured by the control node.

As an embodiment, the first resource or the first pattern is determined based on the higher layer configuration, and may be that the higher layer (application layer, NAS layer, L2/3 layer, etc.) directly designates or configures the resource or the pattern as the first resource or the first pattern; the first resource or the first pattern may be further determined according to information (such as terminal information, etc.) of the higher layer configuration.

As an implementation manner, the first resource or the first pattern may be determined based on inter-terminal negotiation, where the first resource or the first pattern is determined by performing negotiation communication between UEs at other frequency points such as FR 1; the first resources or the first patterns may be determined by negotiating between UEs through an IUC-like mechanism, for example, the terminal may determine non-recommended and/or recommended first resource information based on the detection result and send the information, and the first terminal detects the information and excludes or preferentially excludes non-recommended first resources and/or selects or preferentially selects recommended first resources from candidate first resources in the process of determining the resource selection of the first resources based on the detection result of the information.

As an implementation manner, the first resource or the first pattern is determined by listening or detecting the candidate resource, which may be that the first terminal determines whether the candidate resource is the first resource or the first pattern by detecting whether the energy of the candidate resource or the received Power (REFERENCE SIGNAL RECEIVED Power, RSRP) of the reference signal is higher than a certain threshold, that is, the first terminal may be used to transmit the first reference signal; or the first terminal may determine whether the candidate resource is the first resource or the first pattern by monitoring whether listen before talk (Listen Before Talk, LBT) of the candidate resource is successful, which may be used to transmit the first reference signal.

Of course, the manner in which the first terminal determines the first resource is not limited to the above embodiment, and is not listed here.

Optionally, the first resource satisfies at least one of:

the first resource is located on a specific carrier;

The first resource is located on a specific bandwidth portion BWP;

the first resource is located on a particular resource pool.

I.e. the first resource obtained via step 201, is located on a specific carrier, BWP or resource pool. Wherein a particular carrier, BWP or resource pool is protocol-agreed or control node configured.

Alternatively, the first resource obtained by the first terminal through at least one manner may be one or more. Of course, the first resources from which the first terminal finally transmits the first reference signal may be one or more of the resulting first resources.

Optionally, the first terminal transmits a first reference signal on the first resource, including:

the first terminal transmits the first reference signal on a first resource within a first time window or a first timer time.

That is, the first resource of the first terminal transmitting the first reference signal is a first resource within a first time window or a first timer time. For example, the first terminal obtains 100 first resources in at least one manner described above, but the first resources for transmitting the first reference signal are only 20 resources within the first time window or the first timer time.

As an implementation manner, the first terminal is provided with a first time window or a first timer, and in the first time window or the first timer time (the running time of the first timer), the first terminal can send a first reference signal on the first resource; if the time-out is over, the first terminal releases the first resource, i.e. the released first resource can be used for other UEs to send the first reference signal.

Optionally, the first terminal sends the first reference signal on the first pattern within the second time window or within the second timer time. That is, the first pattern of the first terminal transmitting the first reference signal is the first pattern within the second time window or the second timer time.

As an implementation manner, the first terminal is configured with a second time window or a second timer, and in the second time window or the second timer time (the running time of the second timer), the first terminal may send the first reference signal on the first pattern; if the time-out occurs, the first terminal releases the first pattern, i.e. the released first pattern can be used for other UEs to send the first reference signal.

As an embodiment, the first time window or first timer is protocol predefined or control node configured; the second time window or the second timer is protocol predefined or control node configured, the second time window may be the same as or different from the first time window, and the second timer may be the same as or different from the first timer.

Optionally, the first terminal transmits a first reference signal on the first resource, including:

the first terminal repeatedly transmits the first reference signal a plurality of times.

As an embodiment, the first terminal periodically transmits the first reference signal.

As an embodiment, the first terminal may repeatedly transmit the first reference signal a plurality of times in one period.

As an embodiment, the first terminal may repeat transmitting the first reference signal a plurality of times within one first resource.

The beam direction of the multiple transmissions, the Index (Index) of the first reference signal, the unified transmission configuration indicator (Transmission Configuration Indicator, TCI) state (state) of the first reference signal, and the Quasi Co-Location (QCL) relationship of the first reference signal may be the same or different.

In addition, in this embodiment, if the first resource is determined based on the configuration of the control node, the first terminal transmits the first reference signal on the first resource, which may be understood as that the control node schedules the first terminal to send the first reference signal, for example, the base station schedules the first resource to send the SL CSI-RS to the first terminal under mode 1.

Optionally, the first resource is further used for transmitting at least one of: source user information; target user information.

That is, the first terminal transmits at least one of source user information and target user information in addition to the first reference signal on the first resource. Wherein,

As an implementation manner, the source user information transmitted on the first resource is the sender information of the first reference signal, such as the ID of the first terminal; the target user information transmitted on the first resource is the desired receiving end information of the first reference signal, such as the ID of the second terminal.

As one embodiment, at least one of the source user information and the target user information is PSCCH or PSSCH information. For example, if the higher layer provides the target user information, the PSCCH or PSSCH may carry the target user information.

Optionally, in this embodiment, after receiving the first reference signal, the second terminal sends first beam feedback information to the first terminal according to a measurement result of the first reference signal, where the first beam feedback information is transmitted (sent) on the second resource.

Optionally, the method further comprises:

after the first reference signal is sent, the first terminal receives first beam feedback information sent by the second terminal on the second resource.

That is, the first terminal is able to receive the first beam feedback information on the second resource.

Optionally, the transmission time of the first beam feedback information has a correspondence with the transmission time of the first reference signal.

As an embodiment, the transmission time of the first reference signal may be a first time unit corresponding to the first reference signal, for example, a time unit (such as a slot or symbol) where the first reference signal is located may be a time unit (slot or symbol) where the first reference signal starts or ends.

As an implementation manner, the transmission time of the first beam feedback information is the time when the second terminal transmits the first beam feedback information, which may be a third time window or a third time unit where the first beam feedback information is located, and the first beam feedback information may be transmitted in a time not earlier than at least one of the first time upper limit and not later than the first time lower limit.

As an implementation manner, after the first terminal sends the first reference signal at the time N, the first terminal expects to receive the first beam feedback information in a time window (a third time window) from n+k1 to n+k2, or expects to receive the first beam feedback information at a time not earlier than n+t1 or not later than n+t2; after receiving the first reference signal at the time N, the second terminal sends the first beam feedback information in a time window (a third time window) from n+k1 to n+k2, or sends the first beam feedback information at a time not earlier than n+t1 or at a time not later than n+t2. For example, as shown in fig. 3, the first terminal repeatedly transmits the first reference signal CSI-RS 13 times, and receives the first beam Feedback information transmitted by the second terminal, that is, the received beam Feedback information (Feedback) within a time window (third time window) from n+k1 to n+k2 after transmitting the CSI-RS1 at time N.

As an embodiment, at least one of the third time window, the third time unit, the first upper time limit, the first lower time limit may be protocol predefined, network or first terminal configured/indicated.

Optionally, the second resource is a resource within a transmission time of the first beam feedback information.

In one embodiment, when the second terminal selects the second resource, the second terminal preferentially selects the resource that satisfies at least one of the third time window, the third time unit, the first time upper limit, and the first time lower limit.

Optionally, when the first conditions are met, the transmission time of the corresponding first beam feedback information is allowed to be at least partially overlapped by a plurality of first reference signals; or when the first condition is not met, not allowing the transmission time of the corresponding first beam feedback information to overlap;

wherein the first condition includes at least one of:

The beam directions are the same;

unified transmission configuration indicates that the TCI states are the same;

Quasi co-located QCL relationships are identical;

the indexes are the same;

The sequences are identical;

The resource locations have an association.

As one embodiment, the first beam feedback information corresponding to the plurality of first reference signals includes beam feedback information corresponding to the plurality of first reference signals one to one; or one beam feedback information corresponding to the plurality of first reference signals; or includes one beam feedback information corresponding to a part of the first reference signals in the plurality of first reference signals and one beam feedback information corresponding to another part of the first reference signals in the plurality of first reference signals.

As an implementation manner, the resource location has an association relationship that the resource locations of the plurality of first reference signals are located in the same time, for example, in a certain time window [ L1, L2 ]; the resource location intervals of the plurality of first reference signals may satisfy a certain rule, for example, the time domain resource locations are L, l+offset, l+2×offset, …, l+m×offset. Therefore, the transmission time of the first beam feedback information corresponding to the first reference signal located in a certain time window [ L1, L2] is the same; or the time domain resource positions are located in the first beam feedback information corresponding to the first reference signals of the L, l+offset, l+2 x offset, …, l+m x offset, and the transmission time is the same.

Optionally, the first resource has a correspondence with one or more of the second resources.

It may also be understood that the first resource has a correspondence with a candidate resource of the second resource, which may be one or more. In this way, feedback resource conflicts between different UEs are avoided.

As an embodiment, the second resource of the second terminal transmitting the first beam feedback information is one or more of candidate resources of one or more second resources corresponding to the first resource. For example, the Z resources corresponding to the first resource are candidate resources of a second resource, and the second resource for the second terminal to send the first beam feedback information is one or more of the Z resources. Specifically, the second terminal randomly selects the second resources for transmission from the Z resources or selects the second resources for transmission according to the identification information of the second terminal.

As an implementation manner, the first resources (e.g., first resources used for transmission, candidate resources of the first resources) are numbered according to a first preset sequence, and the second resources (e.g., second resources used for transmission, candidate resources of the second resources) are numbered according to a second preset sequence, where the kth first resource corresponds to the (k-1) th×z+1 to kth×z second resources.

Wherein the first preset sequence may include at least one of: a) Based on ascending or descending order of RE units; b) Ascending or descending order based on PRB units; c) Ascending or descending order based on slot/symbol. The second preset sequence may include at least one of: a) Ascending or descending order based on PRB/subshannel; b) Ascending or descending order based on slot/symbol.

Optionally, the first reference signal is transmitted on a first resource pool, and the first beam feedback information is transmitted on a second resource pool,

The second resource pool is the first resource pool; or alternatively, the first and second heat exchangers may be,

The first resource pool and one or more second resource pools have a corresponding relationship; or alternatively, the first and second heat exchangers may be,

The second resource pool is a resource pool where the resource for transmitting the first beam feedback information is located.

The second resource pool is the first resource pool, that is, the first beam feedback information corresponding to the first reference signal may be transmitted in the same resource pool as the first reference signal, for example, the first terminal sends the first reference signal on the resource pool 1 (RP 1), and the second terminal also sends the first beam feedback information corresponding to the first reference signal on the RP 1.

The first resource pool and one or more second resource pools have a corresponding relation, that is, the first beam feedback information corresponding to the first reference signal can be transmitted with the first reference signal in the corresponding resource pool, if the first resource pool corresponds to the Z second resource pools, the first terminal receives the first beam feedback information corresponding to the first reference signal on the Z second resource pools; the second terminal selects a second resource pool at random or according to the identification information of the second terminal, or sends first beam feedback information corresponding to the first reference signal on Z second resource pools. For example, the first terminal (UE 1) transmits a first reference signal on RP1, and the second terminal (UE 2) transmits first beam feedback information corresponding to the first reference signal on RP2 associated with RP 1.

The second resource pool is a resource pool where the resource for transmitting the first beam feedback information is located, that is, the first beam feedback information corresponding to the first reference signal is transmitted on the determined resource pool where the second resource is located. For example, the first resource is associated with a plurality of second resources, where the plurality of second resources may be located in a plurality of resource pools, and the second terminal selects the second resources to send the first beam feedback information, where the second resource pool is the resource pool where the selected second resources are located.

Optionally, in a case that the plurality of first reference signals meet a second condition, the plurality of first reference signals are transmitted on the same first resource pool, and the corresponding first beam feedback information is transmitted on the first resource pool;

Wherein the second condition includes at least one of:

The beam directions are the same;

The TCI states are the same;

QCL relationships are identical;

the indexes are the same;

The sequences are identical;

Are located on the same antenna panel.

Optionally, the first beam feedback information includes at least one of:

Source user information;

target user information;

A resource location of one or more first reference signals;

measurement results of one or more first reference signals;

receiving feedback information;

DCR。

As an embodiment, if the first beam feedback information includes source user information, the source user information is user information of a terminal that transmits the first beam feedback information, such as an ID of a second terminal; if the first beam feedback information includes target user information, the target user information is the user information of the terminal receiving the first beam feedback information, such as the ID of the first terminal; if the first beam feedback information includes resource locations (also referred to as patterns or indexes) of one or more first reference signals, the one or more first reference signals are measured by the second terminal, and the one or more first reference signals with better measurement results (such as RSRP is greater than a certain threshold value) are also referred to as optimal first reference signals; the first beam feedback information includes measurement results of one or more first reference signals, such as measurement results of an optimal first reference signal (RSRP or SINR, etc.); if the first beam feedback information includes receiving feedback information, the receiving feedback information is acknowledgement ACK or negative acknowledgement NACK, for example, sending ACK on a second resource corresponding to the beam direction of the optimal first reference signal; if the first beam feedback information includes DCR, the DCR may be directly sent on the second resource corresponding to the beam direction of the optimal first reference signal, where the optimal beam information is implicit in the resource mapping relationship.

Optionally, the bearer channel of the first beam feedback information includes at least one of a physical sidelink feedback channel PSFCH, a physical sidelink shared channel PSSCH, and a PSCCH.

If a known PSFCH format (format) is adopted, that is, PSFCH carrying the first beam feedback information occupies 1 PRB, an ACK may be sent on a second resource corresponding to the beam direction of the optimal first reference signal; if it is a new PSFCH format, the PSFCH format carrying the first beam feedback information occupies N1 time units or N2 frequency domain units, for example new PSFCH format may refer to the design of PUCCH format 2/3/4, where the scrambling sequence is generated according to a pseudo-random sequence, and the initialization parameter of the pseudo-random sequence is generated according to the UE2 ID or the UE1 ID.

In addition, if the first beam feedback information is transmitted through PSFCH +pssch or PSCCH, ACK or NACK may be transmitted on PSFCH corresponding to the first resource of the optimal first reference signal, and the remaining beam feedback information of the first beam feedback information may be transmitted on the resource associated with PSFCH.

Optionally, the transmission resource of the first beam feedback information includes a first portion and a second portion, where the first portion and the second portion have a correspondence;

The first part is used for transmitting and receiving feedback information, the second part is used for the first terminal to send DCR, or the second terminal transmits at least one of the following:

The rest information except the receiving feedback information in the first wave beam feedback information;

Source user information;

DCR；

And a second reference signal for at least one of beam training, beam measurement, and beam scanning.

That is, the transmission resources of the first beam feedback information include two types of resources, one type is a resource for transmitting the reception feedback information, i.e., a first portion; one type is resources, i.e. a second part, for the first terminal to transmit the DCR, or for the second terminal to transmit the remaining information in the first beam feedback information, the source user information (the sender user information of the first beam feedback information), the DCR, the second reference signal, except for the receiving feedback information.

The first beam feedback information is transmitted on a second resource, and the second resource used for transmission is the transmission resource of the first beam feedback information, and the first part of the second resource and the second part of the second resource have a corresponding relationship.

As one embodiment, the first portion and the second portion have a correspondence relationship of: the second part is the resource reserved by the first part, for example, the first part carries information to indicate the second part; or the second part is the resource reserved by the first resource corresponding to the first part; or the second part is a second part corresponding to the resources reserved for the first resources corresponding to the first part.

As an embodiment, the transmission resources of the first beam feedback information include PSFCH +pssch or PSCCH resources, PSFCH resources are first part of transmitting ACK/NACK, and PSSCH or PSCCH resources are second part.

Optionally, the second terminal repeatedly sends the first beam feedback information multiple times within the transmission time of the first beam feedback information.

As one embodiment, the transmission time of the first beam feedback information is a second time window, and the second terminal repeatedly transmits the first beam feedback information multiple times within the second time window.

As an embodiment, the second time window is protocol predefined or control node configured, or the second time window has a correspondence with the first time window.

Specifically, the implementation of repeating the transmission of the first beam feedback information and the transmission of the first reference signal by the first terminal for multiple times is omitted herein.

Optionally, before the second terminal sends the first beam feedback information on the second resource, determining the power of the first beam feedback information according to at least one of the following: downlink path loss; maximum transmission power allowed by the terminal; side link path loss.

Wherein the maximum transmission power allowed by the terminal is the maximum transmission power allowed by the second terminal.

As an embodiment, the sidelink path loss is derived from an RSRP or path loss (pathloss) of the first reference signal of the first terminal.

As an embodiment, the first power is obtained based on the downlink path loss, the second power is obtained based on the maximum transmission power allowed by the terminal, the third power is obtained based on the side link path loss, and the power of the first beam feedback information may be any one of the first power, the second power, and the third power, may be a minimum value of any two of the first power, the second power, and the third power, and may be a minimum value of the three.

Optionally, after the first terminal transmits the first reference signal on the first resource, the method further includes:

the first terminal receives a second reference signal transmitted by a second terminal on a third resource, the second reference signal being used for at least one of beam training, beam measurement and beam scanning.

Optionally, after receiving the first reference signal, the second terminal transmits the second reference signal. The second terminal receives the first reference signal transmitted by the first terminal on the first resource, and then sends the second reference signal on the third resource.

As an embodiment, the second terminal transmits the second reference signal after receiving the first reference signal, and the second terminal also transmits the first beam feedback information, which may not carry the user information of the second terminal, such as ID.

Optionally, before the second reference signal sent on the third resource, the second terminal further includes: the third resource is obtained by at least one of: determining based on the second resource selection related information; based on a predefined or preconfigured determination; determining based on a configuration of the control node; determining based on the high-level configuration; determining based on the first terminal indication; monitoring or detecting candidate resources; randomly selecting among the candidate resources.

The manner in which the second terminal determines the third resource is similar to the manner in which the first terminal determines the first resource described above, and will not be described in detail here. It should be appreciated that the candidate resource employed by the third resource is determined to be a candidate resource for the third resource.

Optionally, the third resource is a resource within a transmission time of the second reference signal.

I.e. the second terminal, when selecting the third resource, preferentially selects the resource within the transmission time of the second reference signal.

In one embodiment, when the second terminal selects the third resource, the second terminal preferentially selects a resource that satisfies at least one of the fourth time window, the fourth time unit, the second time upper limit, and the second time lower limit.

As an implementation manner, the transmission time of the second reference signal is a time when the second terminal transmits the second reference signal, and may be a fourth time window or a fourth time unit in which the second reference signal is located, and may be that the second reference signal is transmitted in a time not earlier than at least one of the second upper time limit and not later than the second lower time limit.

As an embodiment, at least one of the fourth time window, the fourth time unit, the second upper time limit, the second lower time limit may be protocol predefined, network or first terminal configured/indicated.

As an embodiment, the third resource is a second portion of the second resource. For example, as shown in fig. 4, the first terminal repeatedly transmits the first reference signal CSI-RS 13 times, and receives the Feedback information Feedback transmitted by the second terminal in a time window (third time window) from n+k1 to n+k2 after the CSI-RS1 is transmitted at time N, where the Feedback is transmitted in a first portion of the second resource, and a second portion corresponding to the first portion is used for the second terminal to transmit the second reference signal CSI-RS2.

Alternatively, the third resource may be a resource corresponding to the second pattern, where the third resource is obtained in at least one manner as described above, or the second pattern may be obtained in at least one manner as described above.

As an embodiment, the second pattern may be the first pattern received by the second terminal.

As an embodiment, the second pattern may be a pattern configured/preconfigured with a plurality of second reference signals based on the control node, and one of the second patterns is autonomously selected by the second terminal to transmit the second reference signals.

Optionally, after the first terminal transmits the first reference signal on the first resource, the method further includes:

The first terminal receives the DCR sent by the second terminal on the fourth resource.

Here, the second terminal sends a DCR on the fourth resource for the PC5 connection establishment request.

Optionally, the DCR sent by the second terminal, or the PSCCH where the DCR is located, or the PSSCH where the DCR is located, includes at least one of the following:

establishing connection target information, namely information of a target terminal connected with the PC5 by the second terminal, such as ID of the target terminal;

information of the first reference signal, such as index of the first reference signal, pattern information of the first signal, etc.;

The first beam feeds back information.

As an embodiment, the second terminal sends the DCR to the target terminal, and the first terminal receives the DCR when it is the target terminal.

As an embodiment, the connection establishment target information may be determined according to the detected terminal information in the PSCCH/psch transmitted together with the first reference signal; the connection establishment target information may also be determined according to a determination manner of a first resource, for example, the first resource is determined according to an ID of the first terminal, and the second terminal may determine an ID of the first terminal, that is, an ID of the target terminal, according to the first resource that receives the first reference signal; the connection establishment target information can also be determined according to the target terminal information provided by the application layer.

Optionally, the fourth resource is a resource within a transmission time of the second terminal transmitting the DCR.

In one embodiment, when the second terminal selects the fourth resource, the second terminal preferentially selects a resource that satisfies at least one of the fifth time window, the fifth time unit, the third upper time limit, and the third lower time limit.

As an embodiment, the transmission time for transmitting the DCR is a time for the second terminal to transmit the DCR, may be a fifth time window or a fifth time unit in which the DCR is located, and may be a time for transmitting the DCR not earlier than at least one of the third upper time limit and not later than the third lower time limit.

As an embodiment, the fourth resource is a second portion of the second resource.

As an embodiment, at least one of the fifth time window, the fifth time unit, the third upper time limit, and the third lower time limit has a corresponding relationship with the time unit in which the received first reference signal is located, for example, as shown in fig. 5, after the second terminal receives the first reference signal CSI-RS at time N, the second terminal expects to send DCR in the time window (fifth time window) from n+k3 to n+k4.

As an embodiment, at least one of the fifth time window, the fifth time unit, the third upper time limit, and the third lower time limit has a correspondence with at least one of the third time window, the third time unit, the first upper time limit, and the first lower time limit in which the transmitted first beam feedback information is located, for example, after the second terminal transmits the beam feedback information at time N ', the second terminal expects to transmit the DCR in a time window (fifth time window) from N ' +k3' to N ' +k4 '.

As an embodiment, at least one of the fifth time window, the fifth time unit, the third upper time limit, the third lower time limit may be protocol predefined, network or first terminal configured/indicated.

Optionally, before the second terminal sends the DCR on the fourth resource, the method further includes: the second terminal obtains the fourth resource by at least one of the following modes: determining based on the second resource selection related information; determining based on a configuration of the control node; the determination is based on the first terminal indication.

Optionally, the second resource selection related information includes at least one of:

the identity of the second terminal;

Grouping information of the second terminal;

a DCR associated with the second reference signal;

the second reference signal associated PSCCH.

The manner in which the second terminal determines the fourth resource is similar to the manner in which the first terminal determines the first resource described above, and will not be described in detail herein.

Optionally, the second terminal repeatedly transmits the DCR a plurality of times.

As an embodiment, the second terminal repeatedly transmits the DCR a plurality of times within the fifth time window.

Specifically, the second terminal repeatedly transmits the DCR multiple times is similar to the first terminal repeatedly transmitting the first reference signal multiple times, and will not be described herein.

Optionally, before the second terminal sends the DCR on the fourth resource, the method further includes: determining a fourth terminal according to the first reference signal; and judging whether the fourth terminal is matched with the own connection establishment target, and determining whether to send DCR according to the matching result.

Namely, when the terminal determined by the second terminal according to the first reference signal is matched with the self connection establishment target, the DCR is sent; otherwise, the DCR is not sent.

Optionally, after the first terminal receives the first beam feedback information sent by the second terminal, the method further includes:

the first terminal sends a DCR on a fifth resource.

Here, the first terminal transmits a DCR on the fifth resource for the PC5 connection establishment request.

In one embodiment, the first terminal, upon receiving the first beam feedback information of the target terminal, e.g., the second terminal, sends the DCR to the second terminal. The first terminal does not need to wait for all the first reference signals to be sent.

Optionally, the DCR sent by the first terminal, or the PSCCH where the DCR is located, or the PSSCH where the DCR is located, includes at least one of the following:

the connection establishment target information is information of a target terminal to which the first terminal establishes a PC5 connection, such as an ID of the target terminal.

Optionally, the first terminal sends the DCR on a fifth resource, including:

the first terminal sends a DCR to a third terminal, the third terminal comprising at least one of:

A terminal for transmitting the first beam feedback information;

A terminal determined according to the target user information in the first beam feedback information;

and determining the terminal according to the target user information provided by the application layer.

The third terminal, namely the first terminal, establishes a target terminal for PC5 connection.

Optionally, the method further comprises:

The first terminal obtains the fifth resource by at least one of the following modes:

determining based on a configuration of the control node;

The determination is based on the second terminal indication.

Optionally, the fifth resource is a resource within a transmission time of the first terminal transmitting the DCR.

In one embodiment, when the first terminal selects the fifth resource, the first terminal preferentially selects a resource that satisfies at least one of the sixth time window, the sixth time unit, the fourth time upper limit, and the fourth time lower limit.

As an embodiment, the transmission time for transmitting the DCR is a time for the first terminal to transmit the DCR, may be a sixth time window or a sixth time unit in which the DCR is located, and may transmit the DCR in a time not earlier than at least one of the fourth upper time limit and not later than the fourth lower time limit.

As an embodiment, the fifth resource is a second portion of the second resource.

As an embodiment, at least one of the sixth time window, the sixth time unit, the fourth upper time limit, and the fourth lower time limit has a correspondence with the time unit in which the received first beam Feedback information is located, for example, as shown in fig. 6, the first terminal receives the first beam Feedback information Feedback at time N3, and expects to send DCR in a time window (sixth time window) from n3+k5 to n3+k6.

As an embodiment, at least one of the sixth time window, the sixth time unit, the fourth upper time limit, and the fourth lower time limit has a correspondence with the time unit in which the first reference signal is located, for example, the first terminal transmits the first reference signal at time N4, and expects to transmit the DCR in the time window (sixth time window) from n4+k7 to n4+k8.

As an embodiment, at least one of the sixth time window, the sixth time unit, the fourth upper time limit, the fourth lower time limit may be protocol predefined, network or second terminal configured/indicated.

Optionally, the first terminal repeatedly transmits the DCR a plurality of times.

As an embodiment, the first terminal repeatedly transmits the DCR a plurality of times within the sixth time window.

Specifically, the first terminal repeatedly transmits the DCR multiple times is similar to the first terminal repeatedly transmitting the first reference signal multiple times, and will not be described herein.

Optionally, the first terminal determines the power of transmitting the DCR according to at least one of:

downlink path loss;

maximum transmission power allowed by the terminal;

side link path loss.

Wherein the maximum transmission power allowed by the terminal is the maximum transmission power allowed by the first terminal.

As an embodiment, the sidelink path loss is obtained from RSRP or pathloss of the first beam feedback information received by the first terminal.

As an embodiment, the fourth power is obtained based on the downlink path loss, the fifth power is obtained based on the maximum transmission power allowed by the terminal, the sixth power is obtained based on the side link path loss, and the power of the first terminal for transmitting the DCR may be any one of the fourth power, the fifth power, and the sixth power, may be a minimum value of any two of the fourth power, the fifth power, and the sixth power, and may be a minimum value of the three.

Optionally, after the first terminal receives the second reference signal transmitted by the second terminal on the third resource, the method further includes:

and the first terminal sends second beam feedback information to the second terminal on a sixth resource.

And the second terminal receives the second beam feedback information on the sixth resource.

Optionally, before the first terminal sends the second beam feedback information to the second terminal on the sixth resource, the method further includes:

The first terminal obtains the sixth resource by at least one of the following means:

determining based on a configuration of the control node;

The determination is based on the second terminal indication.

Optionally, the sixth resource is a resource within a transmission time of the second beam feedback information.

It should be appreciated that, the implementation of the first terminal sending the second beam feedback information to the second terminal on the sixth resource is similar to the implementation of the second terminal sending the first beam feedback information to the first terminal on the second resource, which is not described herein.

Optionally, after the first terminal receives the DCR sent by the second terminal on the fourth resource, the method further includes:

and the first terminal sends a direct communication response DCA to the second terminal on a seventh resource.

Wherein DCA is used for PC5 connection establishment confirmation.

Optionally, before the first terminal sends the direct communication response DCA to the second terminal on the seventh resource, the method further includes:

The first terminal obtains the seventh resource by at least one of the following means:

determining based on a configuration of the control node;

The determination is based on the second terminal indication.

Optionally, the seventh resource is a resource within a transmission time of the first terminal transmitting DCA.

I.e. the first terminal, when selecting the seventh resource, preferentially selects the resource within the transmission time of the first terminal for transmitting the DCA.

In one embodiment, when selecting the seventh resource, the first terminal preferentially selects a resource that satisfies at least one of the seventh time window, the seventh time unit, the fifth time upper limit, and the fifth time lower limit.

As an embodiment, the transmission time for transmitting the DCA is a time for the first terminal to transmit the DCA, may be a seventh time window or a seventh time unit in which the DCA is located, and may transmit the DCA in a time not earlier than at least one of the fifth upper time limit and not later than the fifth lower time limit.

As an embodiment, at least one of the seventh time window, the seventh time unit, the fifth upper time limit, and the fifth lower time limit has a correspondence with the time unit in which the received DCR is located, for example, as shown in fig. 7, the first terminal receives the DCR at time N5, and expects to send the DCA in the time window (seventh time window) from N5+k9 to N5 +k10.

As an embodiment, at least one of the seventh time window, the seventh time unit, the fifth upper time limit, and the fifth lower time limit has a correspondence with the time unit in which the first reference signal is located, and the first terminal transmits the first reference signal at time N6, and expects to transmit DCA in the time windows (seventh time windows) of n6+k11 to n6+k12.

As an embodiment, at least one of the seventh time window, the seventh time unit, the fifth upper time limit, the fifth lower time limit may be protocol predefined, network or second terminal configured/indicated.

Optionally, the first terminal repeatedly transmits the DCA a plurality of times.

As an embodiment, the first terminal repeatedly transmits DCA multiple times in the seventh time window.

Specifically, the first terminal repeatedly transmits the DCA multiple times is similar to the first terminal repeatedly transmitting the first reference signal multiple times, and will not be described herein.

Optionally, the first terminal determines the power of transmitting DCA according to at least one of:

downlink path loss;

maximum transmission power allowed by the terminal;

side link path loss.

Wherein the maximum transmission power allowed by the terminal is the maximum transmission power allowed by the first terminal.

As an embodiment, the sidelink path loss is derived from RSRP or pathloss of the DCR received by the first terminal.

In one embodiment, the seventh power is obtained based on the downlink path loss, the eighth power is obtained based on the maximum transmission power allowed by the terminal, the ninth power is obtained based on the side link path loss, and the power of the first terminal for transmitting the DCR may be any one of the seventh power, the eighth power, and the ninth power, may be a minimum value of any two of the seventh power, the eighth power, and the ninth power, and may be a minimum value of the three.

Optionally, after the second terminal receives the DCR sent by the first terminal on the fifth resource, the method further includes: the DCA is sent on the eighth resource.

Optionally, the method further comprises:

after transmitting the DCR, the first terminal receives the DCA on an eighth resource.

Wherein DCA is used for PC5 connection establishment confirmation.

Optionally, the eighth resource is a resource within a transmission time of receiving DCA.

I.e. the second terminal, when selecting the eighth resource, preferentially selects the resource within the transmission time of the received DCA.

In one embodiment, when the second terminal selects the eighth resource, the second terminal preferentially selects a resource that satisfies at least one of the eighth time window, the eighth time unit, the sixth time upper limit, and the sixth time lower limit.

As an embodiment, at least one of the eighth time window, the eighth time unit, the sixth upper time limit, the sixth lower time limit may be protocol predefined, network or first terminal configured/indicated.

Optionally, before the second terminal sends the DCA on the eighth resource, the method further includes: the eighth resource is obtained by at least one of:

determining based on a configuration of the control node;

The determination is based on the first terminal indication.

Optionally, in this embodiment, after the first terminal sends the first reference signal on the first resource, the first terminal expects to receive the first beam feedback information corresponding to the first reference signal in at least one of the second resource, the third time window, the third time unit, and not earlier than the first upper time limit and not later than the first lower time limit.

Optionally, if the first terminal receives the first beam feedback information corresponding to the first reference signal, for example, the first beam feedback information sent by the second terminal, in at least one of the second resource, the third time window, the third time unit, the first time upper limit and the first time lower limit, the first terminal executes at least one of the following:

desiring to receive a second reference signal, such as a SL CSI-RS, within at least one of a third resource, a fourth time window, a fourth time unit, a second upper time limit, and a second lower time limit;

Desiring to receive the DCR within at least one of a fourth resource, a fifth time window, a fifth time unit, a third upper time limit, and a third lower time limit;

Desiring to transmit the DCR within at least one of a fifth resource, a sixth time window, a sixth time unit, a fourth upper time limit, and a fourth lower time limit;

And sending the ACK of the first beam feedback information in at least one of a ninth resource, a ninth time window, a ninth time unit, a seventh upper time limit and a seventh lower time limit.

The ninth resource, the ninth time window, the ninth time unit, the seventh upper time limit and the seventh lower time limit correspond to the first terminal sending the ACK or NACK after receiving the first beam feedback information.

Optionally, the method further comprises:

in the case that the first beam feedback information is not received, the first terminal performs at least one of:

transmitting a negative acknowledgement NACK for the first beam feedback information on a ninth resource;

and switching the beam direction of the first reference signal and retransmitting the first reference signal.

In an embodiment, the first beam feedback information corresponding to the first reference signal, for example, the first beam feedback information sent by the second terminal, is not received by the first terminal in at least one of the second resource, the third time window, the third time unit, the first time upper limit and the first time lower limit.

In one embodiment, the transmitting the NACK of the first beam feedback information on the ninth resource includes transmitting the NACK of the first beam feedback information within at least one of the ninth resource, the ninth time window, the ninth time unit, the seventh upper time limit, and the seventh lower time limit.

As an embodiment, at least one of the ninth resource, the ninth time window, the ninth time unit, the seventh upper time limit, the seventh lower time limit is protocol predefined, network or second terminal configured/indicated.

As an embodiment, at least one of the ninth resource, the ninth time window, the ninth time unit, the seventh time upper limit, and the seventh time lower limit has a correspondence with the first beam feedback information, for example, the first terminal transmits the first reference signal at time N7, and transmits the ACK of the first beam feedback information in the time windows (ninth time windows) of n7+k13 to n7+k14.

Wherein the beam direction of the first reference signal is switched and the first reference signal is retransmitted to ensure that at least one of beam training, beam measurement and beam scanning is enabled.

As an implementation manner, the first terminal switches the beam direction after receiving the information that the second terminal triggers the first terminal to retransmit the first reference signal with a different beam direction.

In one embodiment, before the first terminal switches the beam direction to retransmit the first reference signal, at least one of ACK or NACK response time of the first terminal to the first beam feedback information and retransmission time of the first beam feedback information by the second terminal is also considered. For example, the first terminal does not receive the first beam feedback information of the second terminal on the second resource, and the first terminal needs to switch the beam direction of the first reference signal after sending the NACK on the ninth resource corresponding to the second resource.

Optionally, in this embodiment, for the first terminal expects to receive the DCR in at least one of the fourth resource, the fifth time window, the fifth time unit, the third upper time limit, and the third lower time limit (possibly after the second terminal receives the first reference signal CSI-RS, the second terminal does not send the first beam feedback information, only sends the DCR, where the DCR may carry the first beam feedback information),

If the first terminal receives the DCR, such as the DCR sent by the second terminal, in at least one of the fourth resource, the fifth time window, the fifth time unit, the third upper time limit, and the third lower time limit, the first terminal executes at least one of the following:

Transmitting DCA in at least one of a seventh resource, a seventh time window, a seventh time unit, a fifth upper time limit, and a fifth lower time limit;

And sending the ACK to the DCR in at least one of tenth resources, tenth time window, tenth time unit, eighth time upper limit and eighth time lower limit.

And the tenth resource, the tenth time window, the tenth time unit, the eighth upper time limit and the eighth lower time limit correspond to the first terminal to send ACK or NACK after receiving the DCR.

Optionally, the method further comprises:

In case that the DCR is not received, the first terminal performs at least one of:

transmitting a NACK for the DCR on a tenth resource;

and switching the beam direction of the first reference signal and retransmitting the first reference signal.

As an implementation manner, the first terminal does not receive the DCR, i.e., the first terminal does not receive the DCR, e.g., the DCR sent by the second terminal, in at least one of the fourth resource, the fifth time window, the fifth time unit, the third upper time limit, and the third lower time limit.

In one embodiment, transmitting the NACK for the DCR on the tenth resource includes transmitting the NACK for the DCR within at least one of the tenth resource, the tenth time window, the tenth time unit, the eighth time upper limit, and the eighth time lower limit.

As an embodiment, at least one of the tenth resource, the tenth time window, the tenth time unit, the eighth upper time limit, the eighth lower time limit is protocol predefined, network or second terminal configured/indicated.

As an embodiment, at least one of the tenth resource, the tenth time window, the tenth time unit, the eighth time upper limit, and the eighth time lower limit has a correspondence with the DCR, for example, the first terminal transmits the DCR at time N8, and transmits the NACK of the DCR in the time window (tenth time window) from n8+k15 to n8+k16.

Wherein the beam direction of the first reference signal is switched and the first reference signal is retransmitted, as indicated above, for ensuring that at least one of beam training, beam measurement and beam scanning is enabled.

As an implementation manner, the first terminal switches the beam direction after receiving the information that the second terminal triggers the first terminal to retransmit the first reference signal with a different beam direction.

As an embodiment, before the first terminal switches the beam direction to retransmit the first reference signal, at least one of ACK or NACK response time of the first terminal to the DCR and retransmission time of the second terminal to the DCR is also considered. For example, the first terminal does not receive the DCR of the second terminal on the fourth resource, and the first terminal needs to switch the beam direction of the first reference signal after transmitting the NACK on the tenth resource corresponding to the fourth resource.

Optionally, after the first terminal sends the DCR on the fifth resource, the first terminal expects to receive the DCA, such as the DCA sent by the second terminal, in at least one of the eighth resource, the eighth time window, the eighth time unit, the sixth time upper limit, and the sixth time lower limit.

Optionally, if the first terminal receives the DCA in at least one of the eighth resource, the eighth time window, the eighth time unit, the sixth upper time limit, and the sixth lower time limit, the connection establishment between the first terminal and the PC5 of the opposite terminal is successful. Or the first terminal sends the ACK of the DCA in at least one of eleventh resource, eleventh time window, eleventh time unit, ninth time upper limit and ninth time lower limit.

At least one of the eleventh resource, the eleventh time window, the eleventh time unit, the ninth time upper limit and the ninth time lower limit corresponds to the first terminal sending the ACK or the NACK after receiving the DCA.

Optionally, the method further comprises:

In the case that the DCA is not received, or the NACK of the DCR is received, or the acknowledgement ACK of the DCR is not received, or the NACK of the DCR is not received, the first terminal performs at least one of the following:

transmitting a NACK of the DCA on an eleventh resource;

Resending the DCR;

Triggering retransmission of the DCA;

and switching the beam direction of the first reference signal and retransmitting the first reference signal.

As an implementation manner, the first terminal does not receive the DCA, i.e., the first terminal does not receive the DCA in at least one of the eighth resource, the eighth time window, the eighth time unit, the sixth time upper limit, and the sixth time lower limit, such as the DCA sent by the second terminal.

As an embodiment, the first terminal receives NACK of the DCR within at least one of the twelfth resource, the twelfth time window, the twelfth time unit, the tenth time upper limit, and the tenth time lower limit.

As an embodiment, at least one of the twelfth resource, the twelfth time window, the twelfth time unit, the tenth upper time limit, the tenth lower time limit is protocol predefined, network or second terminal configured/indicated.

As one embodiment, at least one of the twelfth resource, the twelfth time window, the twelfth time unit, the tenth time upper limit, and the tenth time lower limit has a correspondence with the DCR.

As an embodiment, the first terminal receives no ACK or NACK for the DCR in at least one of the twelfth resource, the twelfth time window, the twelfth time unit, the tenth time upper limit, and the tenth time lower limit.

In one embodiment, transmitting the NACK of the DCA on the eleventh resource includes transmitting the NACK of the DCA in at least one of the eleventh resource, the eleventh time window, the eleventh time unit, the ninth time upper limit, and the ninth time lower limit.

As an implementation manner, the step of retransmitting the DCR includes the step of the first terminal reselecting the fifth resource to transmit the DCR, for example, the first terminal reselects the fifth resource to transmit the DCR in at least one of a sixth time window, a sixth time unit, a fourth time upper limit, and a fourth time lower limit; or resend the DCR on the reserved fifth resource, i.e. without having to reselect the fifth resource.

As an embodiment, the trigger re-sending DCA, i.e. the first terminal triggers the second terminal to re-send DCA.

In one embodiment, the beam direction of the first reference signal is switched, and the first reference signal is retransmitted, and before the first terminal switches the beam direction to retransmit the first reference signal, at least one of ACK or NACK response time of the second terminal to the DCR and retransmission time of the first terminal to the DCR is considered.

Optionally, in this embodiment, the first terminal expects to receive an ACK or NACK for the DCA after transmitting the DCA.

As an embodiment, the first terminal transmits the DCA on the seventh resource, and expects to receive an ACK or NACK for the DCA in at least one of the thirteenth resource, the thirteenth time window, the thirteenth time unit, the eleventh time upper limit, and the eleventh time lower limit.

As an embodiment, at least one of the thirteenth resource, the thirteenth time window, the thirteenth time unit, the eleventh time upper limit, the eleventh time lower limit is protocol predefined, network or second terminal configured/indicated.

As one embodiment, at least one of the thirteenth resource, the thirteenth time window, the thirteenth time unit, the eleventh time upper limit, and the eleventh time lower limit has a correspondence with the DCA.

If the first terminal receives the ACK of DCA after sending DCA, the connection establishment between the first terminal and the PC5 of the opposite terminal is successful.

Optionally, the method further comprises:

In case of failure in transmitting DCA, the first terminal retransmits DCA.

Wherein the failure to send the DCA includes at least one of an ACK or NACK for the DCA not received, or a NACK for the DCA received, or an ACK for the DCA not received.

In the case that no ACK or NACK of DCA is received, or no ACK of DCA is received, the first terminal performs at least one of:

Resending the DCA;

and switching the beam direction of the first reference signal and retransmitting the first reference signal.

As an embodiment, the retransmitting DCA may be a reselection of the seventh resource transmitting DCA, such as a reselection of the seventh resource transmitting DCA within at least one of a seventh time window, a seventh time unit, a fifth time upper limit, and a fifth time lower limit; or the DCR is retransmitted on the reserved seventh resource, i.e. without having to reselect the seventh resource.

In one embodiment, the beam direction of the first reference signal is switched, and the first reference signal is retransmitted, and before the first terminal switches the beam direction to retransmit the first reference signal, at least one of ACK or NACK response time of the second terminal to the DCA and retransmission time of the first terminal to the DCA is considered.

Optionally, in this embodiment, the first reference signal and the DCR associated with the first reference signal are jointly transmitted.

In this way, the first terminal transmits the first reference signal together with the DCR associated with the first reference signal, and the second terminal transmits at least one of the DCA and the first beam feedback information to the first terminal according to the received DCR and the first reference signal.

In this embodiment, when determining the resource based on the terminal related information (such as the identification information of the terminal), the resource may be determined based on the receiving-side related information in addition to the transmitting-side related information. For example, the determining the first resource may determine the first resource based on the identification information of the second terminal in addition to the first resource based on the identification information of the first terminal.

As shown in fig. 8, a transmission processing method according to an embodiment of the present application includes:

In step 801, a second terminal receives a first reference signal transmitted by a first terminal on a first resource, the first reference signal being used for at least one of beam training, beam measurement and beam scanning.

Since the first resource is obtained by the first terminal in at least one of the following ways: based on the first resource selection related information, based on the predefined or preconfigured determination, based on the configuration determination of the control node, based on the higher-layer configuration determination, based on the inter-terminal negotiation determination, monitoring or detecting the candidate resource, and randomly selecting the candidate resource; the obtained first resource avoids the same condition with other terminals to a large extent, and the second terminal can realize at least one of beam training, beam measurement and beam scanning by the first reference information, so that the problem of resource conflict in beam training or management is solved.

Optionally, the second terminal may also obtain the first resource in at least one of the foregoing manners to receive the first reference signal.

Optionally, the first resource satisfies at least one of:

the first resource is located on a specific carrier;

The first resource is located on a specific BWP;

the first resource is located on a particular resource pool.

Optionally, the method further comprises:

After receiving the first reference signal, the second terminal transmits first beam feedback information on a second resource.

Optionally, the second terminal sends the first beam feedback information on a second resource, including:

And the second terminal repeatedly transmits the first beam feedback information for a plurality of times in the transmission time of the first beam feedback information.

Optionally, before the second terminal sends the first beam feedback information on the second resource, the method further includes:

The second terminal determines the power of the first beam feedback information according to at least one of the following:

downlink path loss;

maximum transmission power allowed by the terminal;

side link path loss.

Optionally, after the second terminal receives the first reference signal transmitted by the first terminal on the first resource, the method further includes:

The second terminal transmits a second reference signal on a third resource, the second reference signal being used for at least one of beam training, beam measurement and beam scanning.

Optionally, before the second reference signal sent on the third resource, the second terminal further includes:

The second terminal obtains the third resource by at least one of the following modes:

Determining based on the second resource selection information;

based on a predefined or preconfigured determination;

determining based on a configuration of the control node;

Determining based on the high-level configuration;

Determining based on the first terminal indication;

Monitoring or detecting candidate resources;

Randomly selecting among the candidate resources.

Optionally, after the second terminal receives the first reference signal transmitted by the first terminal on the first resource, the method further includes:

The second terminal sends a DCR on a fourth resource.

Optionally, before the second terminal sends the DCR on the fourth resource, the method further includes:

The second terminal obtains the fourth resource by at least one of the following modes:

Determining based on the second resource selection related information;

determining based on a configuration of the control node;

The determination is based on the first terminal indication.

Optionally, before the second terminal sends the DCR on the fourth resource, the method further includes:

The second terminal determines a fourth terminal according to the first reference signal;

And the second terminal judges whether the fourth terminal is matched with the connection establishment target of the second terminal, and determines whether to send DCR according to a matching result.

Optionally, after the second terminal sends the first beam feedback information on the second resource, the method further includes:

The second terminal receives the DCR sent by the first terminal on the fifth resource.

Optionally, after the second reference signal sent by the second terminal on the third resource, the method further includes:

and the second terminal receives second beam feedback information sent by the first terminal on a sixth resource.

Optionally, after the second terminal sends the DCR on the fourth resource, the method further includes:

and the second terminal receives DCA sent by the first terminal on a seventh resource.

Optionally, after the second terminal receives the DCR sent by the first terminal on the fifth resource, the method further includes:

the second terminal sends DCA on an eighth resource.

Optionally, before the second terminal sends the DCA on the eighth resource, the method further includes:

the second terminal obtains the eighth resource by at least one of the following means:

determining based on a configuration of the control node;

The determination is based on the first terminal indication.

Optionally, after the second terminal transmits the first beam feedback information on the second resource, at least one of the following is performed:

desiring to receive the DCR within at least one of a fifth resource, a sixth time window, a sixth time unit, a fourth upper time limit, and a fourth lower time limit;

The ACK or NACK for the first beam feedback information is expected to be received within at least one of a ninth resource, a ninth time window, a ninth time unit, a seventh upper time limit, and a seventh lower time limit.

As an embodiment, the second terminal receives DCR or dcr+ack, and the second terminal performs at least one of:

transmitting the DCA on the eighth resource;

an ACK for the DCR is sent on the twelfth resource.

As an embodiment, the second terminal sends DCA on the eighth resource, including sending DCA in at least one of the eighth resource, the eighth time window, the eighth time unit, the sixth time upper limit, and the sixth time lower limit.

As an embodiment, the second terminal receives an ACK for the first beam feedback information in at least one of the ninth resource, the ninth time window, the ninth time unit, the seventh time upper limit, and the seventh time lower limit, and performs at least one of the following:

Transmitting a second reference signal on a third resource;

The DCR is sent on the fourth resource.

As an implementation manner, the second terminal sends the second reference signal on the third resource, which includes sending the second reference signal in at least one of a fourth time window, a fourth time unit, a second time upper limit and a second time lower limit of the third resource.

As an embodiment, the second terminal sends the DCR on the fourth resource, including sending the DCR within at least one of the fourth resource, the fifth time window, the fifth time unit, the third upper time limit, and the third lower time limit.

Optionally, after the second terminal sends the first beam feedback information on the second resource, the method further includes:

In the case that the DCR is not received, or the NACK of the first beam feedback information is received, or the ACK of the first beam feedback information is not received, or the NACK of the first beam feedback information is not received, the second terminal performs at least one of:

Retransmitting the first beam feedback information;

Transmitting a NACK for the DCR on a twelfth resource;

Triggering retransmission of the first reference signal in a different beam direction;

Triggering retransmission of the DCR;

The first reference signal is received at a next one of the first resource locations.

Wherein, the failure to receive the DCR, the NACK of the first beam feedback information, the ACK of the first beam feedback information, or the NACK of the first beam feedback information is understood as the failure to send the first beam feedback information.

As an implementation manner, the second terminal does not receive the DCR, i.e., the DCR sent by the first terminal, in at least one of the fifth resource, the sixth time window, the sixth time unit, the fourth upper time limit, and the fourth lower time limit.

In one embodiment, receiving the NACK of the first beam feedback information, i.e., receiving the NACK of the first beam feedback information on the ninth resource, includes receiving the NACK of the first beam feedback information within at least one of the ninth resource, the ninth time window, the ninth time unit, the seventh upper time limit, and the seventh lower time limit.

As an embodiment, the first beam feedback information is retransmitted, i.e. the second terminal retransmits the first beam feedback information. If one first resource corresponds to a plurality of candidate positions of the second resource (candidate resources of the second resource), or a plurality of candidate positions of the second resource exist in a third time window, a third time unit, a first time upper limit and a first time lower limit, and first beam feedback information is sent at the next candidate position of the second resource. The time unit interval of the candidate location of the second resource satisfies any one of more than a sixth time window, a sixth time unit, a fourth upper time limit, and a fourth lower time limit.

As an embodiment, the first beam feedback information is retransmitted, i.e. the second terminal reselects the second resource to transmit the first beam feedback information.

As an embodiment, the first beam feedback information is retransmitted, i.e. the second terminal transmits the first beam feedback information on the retransmission resources of the reserved second resources.

In one embodiment, transmitting the NACK for the DCR on the twelfth resource includes transmitting the NACK for the DCR within at least one of the twelfth resource, the twelfth time window, the twelfth time unit, the tenth time upper limit, and the tenth time lower limit.

As an embodiment, the second terminal triggers the first terminal to switch the beam direction of the first reference signal, and resends the first reference signal.

As an embodiment, the second terminal triggers the first terminal to retransmit the DCR.

Optionally, after the second terminal sends the DCR on the fourth resource, at least one of the following is performed:

desiring to receive DCA in at least one of a seventh resource, a seventh time window, a seventh time unit, a fifth upper time limit, and a fifth lower time limit;

The ACK or NACK for the DCR is expected to be received within at least one of a tenth resource, a tenth time window, a tenth time unit, an eighth upper time limit, and an eighth lower time limit.

Optionally, if the second terminal receives the DCA in at least one of the seventh resource, the seventh time window, the seventh time unit, the fifth upper time limit, and the fifth lower time limit, the connection establishment between the second terminal and the PC5 of the opposite terminal is successful. Or the second terminal transmits the ACK of the DCA in at least one of thirteenth resource, thirteenth time window, thirteenth time unit, eleventh time upper limit and eleventh time lower limit.

Optionally, after the second terminal sends the DCR on the fourth resource, the method further includes:

In the case that the DCA is not received, or the NACK of the DCR is received, or the acknowledgement ACK of the DCR is not received, or the NACK of the DCR is not received, the first terminal performs at least one of the following:

Transmitting a NACK of the DCA on a thirteenth resource;

Resending the DCR;

Triggering retransmission of the DCA;

triggering retransmission of the first reference signal in a different beam direction.

As an implementation manner, the second terminal does not receive DCA, i.e., the second terminal does not receive DCA in at least one of the seventh resource, the seventh time window, the seventh time unit, the fifth time upper limit, and the fifth time lower limit, such as DCA of the first terminal.

As an embodiment, the second terminal receives the NACK of the DCR within at least one of the tenth resource, the tenth time window, the tenth time unit, the eighth time upper limit, and the eighth time lower limit.

In one embodiment, transmitting the NACK of the DCA on the thirteenth resource includes transmitting the NACK of the DCA in at least one of the thirteenth resource, the thirteenth time window, the thirteenth time unit, the eleventh time upper limit, and the eleventh time lower limit.

As an implementation manner, the step of retransmitting the DCR includes the step of the second terminal reselecting the fourth resource to transmit the DCR, for example, the second terminal reselects the fourth resource to transmit the DCR in at least one of a fifth time window, a fifth time unit, a third upper time limit and a third lower time limit; or resend the DCR on the reserved fourth resource, i.e. without having to reselect the fourth resource.

As an embodiment, the trigger re-sending DCA, i.e. the second terminal triggers the first terminal to re-send DCA.

As an embodiment, the second terminal triggers the first terminal to switch the beam direction of the first reference signal, and resends the first reference signal.

Optionally, in this embodiment, the second terminal expects to receive an ACK or NACK for the DCA after transmitting the DCA.

As an embodiment, the first terminal transmits the DCA on the eighth resource, and expects to receive the ACK or NACK for the DCA in at least one of the eleventh resource, the eleventh time window, the eleventh time unit, the ninth time upper limit, and the ninth time lower limit.

Optionally, if the second terminal receives an ACK of the DCA after sending the DCA, the connection establishment between the second terminal and the PC5 of the opposite terminal is successful.

Optionally, the method further comprises:

in case of failure in transmitting DCA, the second terminal retransmits DCA.

Wherein the failure to send the DCA includes at least one of an ACK or NACK for the DCA not received, or a NACK for the DCA received, or an ACK for the DCA not received.

In the case that no ACK or NACK of DCA is received, or no ACK of DCA is received, the second terminal performs at least one of:

Resending the DCA;

triggering the first reference signal to re-direct a different beam.

Optionally, the second reference signal and the DCR associated with the second reference signal are jointly transmitted.

In this way, the second terminal transmits the second reference signal together with the DCR associated with the second reference signal, and the first terminal transmits at least one of ACK/NACK of the DCA and second beam feedback information to the first terminal according to the received second reference signal and DCR.

The implementation of the joint transmission of the second reference signal and the DCR associated with the second reference signal is similar to that of the above-mentioned transmission of the second reference signal and the DCR associated with the transmission of the second reference signal, and will not be described herein again.

Optionally, the first terminal sends the second beam feedback information similar to the second terminal sends the first beam feedback information, which is not described herein.

Optionally, the first terminal sends the first reference signal and the DCR associated with the first reference signal together, and the second terminal sends at least one of DCA and first beam feedback information to the first terminal according to the received DCR and the first reference signal.

Optionally, after receiving the acknowledgement of the first beam feedback information by the first terminal, the second terminal sends the DCA to the first terminal.

As an implementation manner, the second terminal expects to receive the acknowledgement of the first beam feedback information by the first terminal within at least one of the ninth resource, the ninth time window, the ninth time unit, the seventh upper time limit and the seventh lower time limit.

In one embodiment, when the first terminal selects the ninth resource, the first terminal preferentially selects acknowledgement of the resource transmission in at least one of the ninth time window, the ninth time unit, the seventh time upper limit and the seventh time lower limit to the first beam feedback information.

As one embodiment, the first beam feedback information has a correspondence with an acknowledgement of the first beam feedback information (similar to the correspondence of PSSCH-PSFCH).

As an embodiment, if the second terminal receives the acknowledgement of the first beam feedback information by the first terminal, the beam direction of the second terminal for transmitting the DCA is the optimal transmit beam direction corresponding to the receiving DCR, and the beam direction of the transmitting DCA may be the same as the transmit beam direction corresponding to the receiving DCR or a narrow beam direction covered by the transmit beam direction corresponding to the receiving DCR.

As an implementation manner, if the second terminal does not receive the acknowledgement of the first beam feedback information by the first terminal or receives the NACK information, the second terminal reselects the second resource to transmit the first beam feedback information, or the second terminal triggers the first terminal to retransmit the DCR in a different direction and the first reference signal associated with the DCR.

It should be noted that, the method is implemented in cooperation with the transmission processing method executed by the first terminal, and the implementation manner of the embodiment of the method is applicable to the method, so that the same technical effects can be achieved.

As shown in fig. 9, an embodiment of the present application provides a sidelink resource determining method, which includes:

Step 901, the terminal determines PSFCH resources according to the mapping rule of the physical sidelink feedback channel PSFCH;

Wherein the PSFCH mapping rules satisfy at least one of:

PSFCH mapping is carried out in M PSFCH periods, wherein M is an integer not less than 1;

The P sub-channels correspond to the same PSFCH resources;

The position of PSFCH PRB is determined first and then PSFCH PRB is extended onto the interface.

The above terminal may be understood as a receiving terminal of the PSSCH, after the receiving terminal determines PSFCH resources, the receiving terminal may perform PSFCH transmission based on the determined PSFCH resources, and the PSFCH may be understood as a channel for carrying feedback information for the PSSCH transmission, for example, the feedback information may include HARQ-ACK information, collision information, and the like.

It should be understood that in the embodiment of the present application, when the terminal performs PSFCH mapping in M PSFCH periods, it indicates that there are a plurality of PSFCH transmission resource positions corresponding to one PSSCH transmission, and there may be corresponding transmission resource positions at PSFCH occasions over M PSFCH periods, or corresponding transmission resource positions at part PSFCH occasions. For example, under the existing standard, there are only 1 position of PSFCH transmission resources corresponding to one PSSCH transmission, for example, when PSFCH period is 1 slot, on slot 2, then when PSFCH mapping is performed in M PSFCH periods, if M is equal to 3, then the corresponding PSFCH transmission resources may also be on slot 3, slot 4. Such a mapping rule, if located in an unlicensed band, may increase PSFCH the probability of successful transmission.

In the embodiment of the present application, when P subchannels correspond to the same PSFCH resources, the P subchannels satisfy at least one of the following:

Subchannels on the same time domain;

subchannels on the same frequency domain;

P sub-channels are continuous;

The P subchannels are discontinuous.

It will be appreciated that the PSFCH resources corresponding to several sub-channels in the same time domain are identical. For example, in the case where P subchannels are consecutive, from the lowest subchannel, PSFCH PRB or PSFCH INTERLACE corresponding to each two subchannels are the same until two subchannels cannot be found within RB set or within the resource pool. At this time, if the cyclic shift pairs of PSFCH corresponding to different subchannels may be different, i.e., distinguished from the code domain, in order to distinguish two subchannels on the PRB. Or the PRB cyclic shift on PSFCH INTERLACE corresponding to different subchannels is different. For example, both the PSFCH resources of sub-channel 0 and sub-channel 1 correspond to interface 0, then the PRB actually carrying information on sub-channel 0 is on the first PRB of interface 0, while the PRB actually carrying information on sub-channel 1 is on the second PRB, and so on. The distinguishing method is the same when the sub-channels are discontinuous, and will not be described again here.

It is also understood that the PSFCH resources corresponding to several sub-channels on the same frequency domain are identical. For example, sub-channel 0 corresponds to PSFCH PRB or PSFCH INTERLACE on all or part of the slots associated with the same PSFCH are the same. Also, in order to distinguish these sub-channels, as above, it may be distinguished from a cyclic shift of the code domain or PRB.

It should be noted that, the subchannels in different time domains or the subchannels in different frequency domains may also correspond to the same PSFCH resources, which is not described herein.

In the embodiment of the application, the terminal determines the position PSFCH PRB first and then expands PSFCH PRB to the interface

It will be appreciated that when designing PSFCH mapping rules, the unit of PSFCH resources is still PRB, but the end terminal will send one interface when it sends PSFCH. The advantage of this is that the existing PSFCH mapping rules can be basically reused, and if the terminal is required to send PSFCH in the form of inter, the terminal can map the PRB extension obtained according to the PSFCH mapping rules to the corresponding inter. In addition, if the PRB carrying PSFCH feedback information on the interlace is a specific certain PRB, multiple PSFCH orthogonal resources may also be provided on the same interlace, so as to solve the problem that the number of interlaces is small and PSFCH resources mapped by different sub-channels are not orthogonal.

Optionally, the PSFCH set where the PSFCH resources are located occupies a total of H physical resources, where H is a positive integer; the H physical resources may be contiguous or non-contiguous. The physical resource may be at least one of PRB, interface, code domain resource, cyclic shift pair, partial PRB on interface.

It can be appreciated that all PSFCH resources configured on one PSFCH occasions are H in total. For example, H PRBs, H interlaces, or some fixed interlaces plus some PRBs, where the fixed interlaces may function to meet the bandwidth requirements in unlicensed bands.

It can be appreciated that the PSFCH resources are resources used for spreading PSFCH when represented as code domain resources, cyclic shift pairs, or PRB positions on the interlace, PRB cyclic shift on interalce. For example, since there may be only 10 interlaces on one RB set, but since one PSFCH period may contain multiple slots, if one subchannel contains one interlace, then the number of interlaces on PSFCH occasions is insufficient to make PSFCH resources of these subchannels completely orthogonal. Thus, if code domain resources, e.g., 6 or more cyclic shift pairs, are introduced, then the fully orthogonal PSFCH resources become more, possibly making the corresponding PSFCH resources of the associated subchannels fully orthogonal. Similarly, if the actual PSFCH feedback information is carried from the interface or the PRBs for differentiating the different PSFCH resource information are differentiated, the PSFCH resources that are completely orthogonal are increased. Thus, when defining the mapping rule, the PSFCH resources corresponding to the sub-channels may no longer be PRBs in the standard, but rather a certain code domain resource on a more specific PRB, a certain cyclic shift pair, or a certain PRB position on the interface, or PRB cyclic shift information on the interface.

It is also understood that PSFCH resources configured on PSFCH occasions may or may not be contiguous. For example, to make PSFCH INTERLACE for all or part of the sub-channels in the same frequency domain or in the same time domain the PSFCH PRB for these sub-channels may be configured in a discontinuous but on the same inter PRB when the initial PSFCH mapped PRB is configured. I.e. these PRBs would map to the same interface. Therefore, the problem that PSFCH INTERLACE is less and PSFCH resources corresponding to the sub-channels cannot be completely orthogonal can be solved, and the information can be further distinguished by the position of the information PRB on the code domain resources or the interface or the information of the PRB cyclic shift. Of course, no further distinction may be made, since the probability of multiple terminals accessing one RB set at the same time on the unlicensed band is small, and thus the influence on the system may be small even if the problem of orthogonality is not solved.

Optionally, PSFCH resources satisfy at least one of:

W1 integeries;

w2 PRBs;

w3 code domain resources on PRB;

w4 cyclic shift pairs;

Wherein W1, W2, W3, W4 are positive integers.

It is understood that PSFCH sent by the terminal may be at least one of the inter, PRB, inter plus several additional PRBs, some cyclic shifts on the PRB.

Optionally, for the PSSCH time slot and the sub-channel associated with the PSFCH transmission time domain position, the transmission resource corresponding to the sub-channel on the PSSCH time slot is L physical resources in the H physical resources.

It can be appreciated that there are corresponding PSFCH resources for all PSSCH slots and subchannels associated with PSFCH occasions according to the PSFCH mapping rules. Typically, these sub-channels will share H physical resources and thus each corresponds to L physical resources. L is a positive integer and is typically configured to be 1.

It will be appreciated that since the number of PSFCH resources in some dimensions may be difficult to ensure that the PSFCH resources corresponding to each sub-channel are all completely orthogonal, then the L physical resources corresponding to multiple sub-channels may be the same. For example, a plurality of sub-channels each correspond to 1 PRB or 1 interface, and the sub-channels are distinguished by code domain information. Or they all correspond to 1 interlace and then are distinguished by information such as PRB cyclic shift on the interlace. Of course, it is also possible to directly indicate that a certain code domain resource is mapped at the time of PSFCH resource mapping. At this time, the H physical resources themselves distinguish between specific PRB or code domain resources on the interlace or PRB cyclic shift resources on the interlace. For example, there are 10 interlaces on PSFCH occasions, but 6 cyclic shift pairs are introduced, then H is equal to 60. Further, there may be 5 or 10 cyclic shifts of PRBs on the interface, then H is equal to 300 or 600, and so on. It will be appreciated that it is also possible to refer to only one of the above examples, and no further description is given here.

Optionally, in the embodiment of the present application, the L physical resources are physical resources with an index range [ (i1+j×y1) ×l, (i1+1+j×y1) ×l-1] in the H physical resources, i1 represents an index value of a PSSCH slot associated with PSFCH, j represents an index value of a subchannel, Y1 represents a number of slots associated with PSFCH opportunities, Y1 is equal to m×y2, and Y2 represents a number of slots contained in one PSFCH cycle.

It will be appreciated that the H physical resources are numbered according to a certain rule, for example, from low to high or from high to low, if code domain information is introduced, it is also possible to first use the frequency domain, then use the code domain, if information such as cyclic shift pairs of the code domain, cyclic shift of the PBR level is introduced at the same time, then use the frequency domain, then use the PRB, last use the code domain, and so on.

Alternatively, since PSFCH corresponding to one PSSCH transmission may be located at PSFCH occasions of a plurality of PSFCH periods in the unlicensed band, one PSFCH occasion requires feedback resources corresponding to sub-channels of a plurality of PSFCH periods. Thus, the existing PSFCH mapping rules need to be updated. One approach is to basically reuse existing rules, extending only the number of slots associated with PSFCH occasions from the number of slots contained in one PSFCH cycle to the number of slots contained in M PSFCH cycles. At this point, PSFCH mapping still follows the basic rule of time-domain-first-time-domain-then-frequency-domain, except that the range of the time domain becomes larger, like considering the current M PSFCH cycles as one virtual large PSFCH cycle.

Optionally, the L physical resources are physical resources in which an index range of the H physical resources is [ (i2+j×y2) l+m (a×m×y2), (i2+1+j×y2) l+m (a×m×y2) -1], i2 represents an index value in Y2 psch slots associated with PSFCH occasions, M is an index value in Y2 slots associated with one PSFCH occasion, and a represents a number of subchannels per unit time associated with one PSFCH occasion.

Another method different from the PSFCH mapping rule described above is to consider the PSSCH slot in each PSFCH period of M PSFCH periods associated with PSFCH opportunities as a subset of mapping according to the original standard, that is, mapping is performed first in a period PSFCH, mapping is still performed according to the rule of time-domain-first-frequency-domain-first in the period, and mapping is performed again in the next period after the period is mapped. The index of the period corresponding to the number of the M periods to be mapped is 0. Alternatively, the smaller m, the earlier the corresponding periodic time domain, and also the later.

It should be noted that, in the embodiment of the present application, the PSFCH period associated with the PSFCH period is not completely divided into PSFCH periods according to the PSFCH period as the last time slot in the period, but rather, one PSFCH period corresponding to the PSFCH period should include those time slots corresponding to the number of time slots. For example, when PSFCH opportunities are discussed, assuming PSFCH cycle is 4, time slots 0-3, 4-7, etc. are generally considered to be one PSFCH cycle. However, since the processing of data requires time, the time slot belonging to PSFCH times is generally spaced apart from the time slot of PSFCH times by a certain distance, and if 1 is assumed, the time slot in PSFCH cycles corresponding to PSFCH times on time slot 7 should be 2 to 5.

According to the method provided by the embodiment of the application, the execution main body can be a device. In the embodiment of the present application, an apparatus executing method is taken as an example, and an apparatus provided in the embodiment of the present application is described.

As shown in fig. 10, a transmission processing apparatus 1000 according to an embodiment of the present application includes:

a first processing module 1010, configured to obtain a first resource by at least one of:

determining based on the first resource selection related information;

based on a predefined or preconfigured determination;

determining based on a configuration of the control node;

Determining based on the high-level configuration;

Determining based on inter-terminal negotiation;

Monitoring or detecting candidate resources;

Randomly selecting from candidate resources;

A first transmitting module 1020 is configured to transmit a first reference signal on the first resource, where the first reference signal is used for at least one of beam training, beam measurement, and beam scanning.

Optionally, the first resource selection related information includes at least one of:

the identity of the first terminal;

grouping information of the first terminal;

A direct communication request, DCR, associated with the first reference signal;

the physical side link control channel PSCCH associated with the first reference signal.

Optionally, the first resource satisfies at least one of:

the first resource is located on a specific carrier;

The first resource is located on a specific bandwidth portion BWP;

the first resource is located on a particular resource pool.

Optionally, the first sending module is further configured to:

the first reference signal is transmitted on a first resource within a first time window or a first timer time.

Optionally, the first sending module is further configured to:

And repeating the transmission of the first reference signal for a plurality of times.

Optionally, the first resource is further used for transmitting at least one of: source user information; target user information.

Optionally, the apparatus further comprises:

And the second receiving module is used for receiving the first beam feedback information sent by the second terminal on the second resource after the first reference signal is sent.

Optionally, the transmission time of the first beam feedback information has a correspondence with the transmission time of the first reference signal.

Optionally, the second resource is a resource within a transmission time of the first beam feedback information.

Optionally, when the first conditions are met, the transmission time of the corresponding first beam feedback information is allowed to be at least partially overlapped by a plurality of first reference signals; or when the first condition is not met, not allowing the transmission time of the corresponding first beam feedback information to overlap;

wherein the first condition includes at least one of:

The beam directions are the same;

unified transmission configuration indicates that the TCI states are the same;

Quasi co-located QCL relationships are identical;

the indexes are the same;

The sequences are identical;

The resource locations have an association.

Optionally, the first resource has a correspondence with one or more of the second resources.

Optionally, the first reference signal is transmitted on a first resource pool, and the first beam feedback information is transmitted on a second resource pool,

The second resource pool is the first resource pool; or alternatively, the first and second heat exchangers may be,

The first resource pool and one or more second resource pools have a corresponding relationship; or (b)

The second resource pool is a resource pool where the resource for transmitting the first beam feedback information is located.

Optionally, in a case that the plurality of first reference signals meet a second condition, the plurality of first reference signals are transmitted on the same first resource pool, and the corresponding first beam feedback information is transmitted on the first resource pool;

Wherein the second condition includes at least one of:

The beam directions are the same;

The TCI states are the same;

QCL relationships are identical;

the indexes are the same;

The sequences are identical;

Are located on the same antenna panel.

Optionally, the first beam feedback information includes at least one of:

Source user information;

target user information;

A resource location of one or more first reference signals;

measurement results of one or more first reference signals;

receiving feedback information;

DCR。

Optionally, the bearer channel of the first beam feedback information includes at least one of a physical sidelink feedback channel PSFCH, a physical sidelink shared channel PSSCH, and a PSCCH.

Optionally, the transmission resource of the first beam feedback information includes a first portion and a second portion, where the first portion and the second portion have a correspondence;

The first part is used for transmitting and receiving feedback information, the second part is used for the first terminal to send DCR, or the second terminal transmits at least one of the following:

The rest information except the receiving feedback information in the first wave beam feedback information;

Source user information;

DCR；

And a second reference signal for at least one of beam training, beam measurement, and beam scanning.

Optionally, the apparatus further comprises:

And a third receiving module, configured to receive a second reference signal sent by the second terminal on a third resource, where the second reference signal is used for at least one of beam training, beam measurement, and beam scanning.

Optionally, the third resource is a resource within a transmission time of the second reference signal.

Optionally, the apparatus further comprises:

and the fourth receiving module is used for receiving the DCR sent by the second terminal on the fourth resource.

Optionally, the DCR sent by the second terminal, or the PSCCH where the DCR is located, or the PSSCH where the DCR is located, includes at least one of the following:

establishing connection target information;

Information of the first reference signal;

The first beam feeds back information.

Optionally, the fourth resource is a resource within a transmission time of the second terminal transmitting the DCR.

Optionally, the apparatus further comprises:

And the second sending module is used for sending the DCR on the fifth resource.

Optionally, the second sending module is further configured to:

Transmitting a DCR to a third terminal, the third terminal comprising at least one of:

A terminal for transmitting the first beam feedback information;

A terminal determined according to the target user information in the first beam feedback information;

and determining the terminal according to the target user information provided by the application layer.

Optionally, the apparatus further comprises:

a third processing module, configured to obtain the fifth resource by at least one of:

determining based on a configuration of the control node;

The determination is based on the second terminal indication.

Optionally, the fifth resource is a resource within a transmission time of the first terminal transmitting the DCR.

Optionally, the apparatus further comprises:

A fourth processing module for determining a power to transmit the DCR based on at least one of:

downlink path loss;

maximum transmission power allowed by the terminal;

side link path loss.

Optionally, the apparatus further comprises:

and the third sending module is used for sending second beam feedback information to the second terminal on a sixth resource.

Optionally, the apparatus further comprises:

A fifth processing module, configured to obtain the sixth resource by at least one of:

determining based on a configuration of the control node;

The determination is based on the second terminal indication.

Optionally, the sixth resource is a resource within a transmission time of the second beam feedback information.

Optionally, the apparatus further comprises:

and the fourth sending module is used for sending a direct communication response DCA to the second terminal on the seventh resource.

Optionally, the apparatus further comprises:

a sixth processing module, configured to obtain the seventh resource by at least one of:

determining based on a configuration of the control node;

The determination is based on the second terminal indication.

Optionally, the seventh resource is a resource within a transmission time of the first terminal transmitting DCA.

Optionally, the apparatus further comprises:

a seventh processing module for determining the power to transmit the DCA according to at least one of:

downlink path loss;

maximum transmission power allowed by the terminal;

side link path loss.

Optionally, the apparatus further comprises:

and a fifth receiving module, configured to receive the DCA on the eighth resource after the DCR is transmitted.

Optionally, the eighth resource is a resource within a transmission time of receiving DCA.

Optionally, the apparatus further comprises:

a seventh processing module, configured to perform at least one of the following in a case where the first beam feedback information is not received:

Transmitting a negative acknowledgement YACK of the first beam feedback information on a ninth resource;

and switching the beam direction of the first reference signal and retransmitting the first reference signal.

Optionally, the apparatus further comprises:

An eighth processing module, configured to perform at least one of the following in a case where the DCR is not received:

YACK sending the DCR on a tenth resource;

and switching the beam direction of the first reference signal and retransmitting the first reference signal.

Optionally, the apparatus further comprises:

The ninth processing module is configured to perform at least one of the following in a case where DCA is not received, YACK of DCR is received, acknowledgement ACK of DCR is not received, or YACK of DCR is not received:

YACK transmitting the DCA on an eleventh resource;

Resending the DCR;

Triggering retransmission of the DCA;

and switching the beam direction of the first reference signal and retransmitting the first reference signal.

Optionally, the apparatus further comprises:

And a fifth sending module, configured to resend the DCA by the first terminal in case of failure in sending the DCA.

Optionally, the first reference signal and the DCR associated with the first reference signal are jointly transmitted.

The device obtains the first resource by adopting at least one of the following modes: based on the first resource selection related information, based on the predefined or preconfigured determination, based on the configuration determination of the control node, based on the higher-layer configuration determination, based on the inter-terminal negotiation determination, monitoring or detecting the candidate resource, and randomly selecting the candidate resource; therefore, the first reference signal used for at least one of beam training, beam measurement and beam scanning can be transmitted on the obtained first resource, and thus, the problem of resource conflict in beam training or management is solved as the obtained first resource is largely avoided from being the same as other terminals.

It should be noted that, the apparatus is an apparatus to which the method executed by the first terminal is applied, and the implementation manner of the embodiment of the method is applicable to the apparatus, so that the same technical effects can be achieved.

The device in the embodiment of the application can be an electronic device, for example, an electronic device with an operating system, or can be a component in the electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, the terminals may include, but are not limited to, the types of terminals 11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the present application are not limited in detail.

The device provided by the embodiment of the application can realize each process realized by the embodiments of the methods of fig. 2 to 7 and achieve the same technical effects, and in order to avoid repetition, the description is omitted here.

As shown in fig. 11, a transmission processing apparatus 1100 according to an embodiment of the present application includes:

A first receiving module 1110 is configured to receive a first reference signal transmitted by a first terminal on a first resource, where the first reference signal is used for at least one of beam training, beam measurement, and beam scanning.

Optionally, the first resource satisfies at least one of:

the first resource is located on a specific carrier;

The first resource is located on a specific BWP;

the first resource is located on a particular resource pool.

Optionally, the apparatus further comprises:

and a sixth sending module, configured to send the first beam feedback information on the second resource after receiving the first reference signal.

Optionally, the sixth sending module is further configured to

And repeating the transmission of the first beam feedback information for a plurality of times within the transmission time of the first beam feedback information.

Optionally, the apparatus further comprises:

A tenth processing module, configured to determine the power of the first beam feedback information according to at least one of:

downlink path loss;

maximum transmission power allowed by the terminal;

side link path loss.

Optionally, the apparatus further comprises:

a seventh transmitting module configured to transmit a second reference signal on a third resource, where the second reference signal is used for at least one of beam training, beam measurement, and beam scanning.

Optionally, the apparatus further comprises:

an eleventh processing module, configured to obtain the third resource by at least one of:

Determining based on the second resource selection information;

based on a predefined or preconfigured determination;

determining based on a configuration of the control node;

Determining based on the high-level configuration;

Determining based on the first terminal indication;

Monitoring or detecting candidate resources;

Randomly selecting among the candidate resources.

Optionally, the apparatus further comprises:

and an eighth sending module, configured to send DCR on the fourth resource by the second terminal.

Optionally, the apparatus further comprises:

a twelfth processing module, configured to obtain the fourth resource by at least one of:

Determining based on the second resource selection related information;

determining based on a configuration of the control node;

The determination is based on the first terminal indication.

Optionally, the apparatus further comprises:

a thirteenth processing module, configured to determine a fourth terminal according to the first reference signal;

And the fourteenth processing module is used for judging whether the fourth terminal is matched with the connection establishment target of the fourth terminal, and determining whether to send DCR according to a matching result.

Optionally, the apparatus further comprises:

and a seventh receiving module, configured to receive the DCR sent by the first terminal on the fifth resource.

Optionally, the apparatus further comprises:

and an eighth receiving module, configured to receive second beam feedback information sent by the first terminal on a sixth resource.

Optionally, the apparatus further comprises:

and a ninth receiving module, configured to receive the DCA sent by the first terminal on the seventh resource.

Optionally, the apparatus further comprises:

And a tenth sending module, configured to send DCA on the eighth resource.

Optionally, the apparatus further comprises:

The fifteenth processing module is configured to obtain the eighth resource by at least one of:

determining based on a configuration of the control node;

The determination is based on the first terminal indication.

Optionally, the apparatus further comprises:

The sixteenth processing module is configured to perform at least one of the following in a case that the DCR is not received, or YACK of the first beam feedback information is received, or ACK of the first beam feedback information is not received, or YACK of the first beam feedback information is not received:

Retransmitting the first beam feedback information;

YACK transmitting the DCR on a twelfth resource;

triggering retransmission of the first reference signal in different beam directions

Triggering a new sent DCR;

The first reference signal is received at a next one of the first resource locations.

Optionally, the apparatus further comprises:

A seventeenth processing module, configured to perform at least one of the following in a case where DCA is not received, or YACK of DCR is received, or acknowledgement ACK of DCR is not received, or YACK of DCR is not received:

YACK transmitting the DCA on an eleventh resource;

Resending the DCR;

Triggering retransmission of the DCA;

triggering retransmission of the first reference signal in a different beam direction.

Optionally, the apparatus further comprises:

And an eleventh sending module, configured to resend the DCA by the second terminal in case of failure in sending the DCA.

Optionally, the second reference signal and the DCR associated with the second reference signal are jointly transmitted.

It should be noted that, the apparatus is an apparatus to which the method executed by the second terminal is applied, and the implementation manner of the embodiment of the method is applicable to the apparatus, so that the same technical effects can be achieved.

The device in the embodiment of the application can be an electronic device, for example, an electronic device with an operating system, or can be a component in the electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, the terminals may include, but are not limited to, the types of terminals 11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the present application are not limited in detail.

The device provided by the embodiment of the application can realize each process realized by the embodiment of the method of fig. 8 and achieve the same technical effects, and in order to avoid repetition, the description is omitted here.

As shown in fig. 12, a sidelink resource determining apparatus according to an embodiment of the present application includes:

a second processing module 1210 configured to determine PSFCH resources according to a physical sidelink feedback channel PSFCH mapping rule;

Wherein the PSFCH mapping rules satisfy at least one of:

PSFCH mapping is carried out in M PSFCH periods, wherein M is an integer not less than 1;

The P sub-channels correspond to the same PSFCH resources;

The location of PSFCH physical resource blocks PRBs is determined first and then PSFCH PRB is extended over the interleaving block interlace.

Optionally, the PSFCH resources satisfy at least one of:

W1 integeries;

w2 PRBs;

w3 code domain resources on PRB;

w4 cyclic shift pairs;

Wherein W1, W2, W3, W4 are positive integers.

Optionally, the PSFCH set where the PSFCH resources are located occupies a total of H physical resources, where H is a positive integer, and the H physical resources may be continuous or discontinuous;

wherein, the physical resource can be at least one of PRB, inter, code domain resource, cyclic shift pair, partial PRB on inter, PRB cyclic shift on inter.

Optionally, the P subchannels satisfy at least one of:

Subchannels on the same time domain;

subchannels on the same frequency domain;

P sub-channels are continuous;

The P subchannels are discontinuous.

Optionally, for a PSSCH time slot and a subchannel associated with a PSFCH transmission time domain position, a PSFCH transmission resource corresponding to the subchannel on the PSSCH time slot is L physical resources of the H physical resources.

Optionally, the L physical resources are physical resources with an index range [ (i1+j×y1) ×l, (i1+1+j×y1) ×l-1] in the H physical resources, i1 represents an index value of a PSSCH slot associated with PSFCH, j represents an index value of a subchannel, Y1 represents a number of slots associated with PSFCH opportunities, Y1 is equal to m×y2, and Y2 represents a number of slots included in one PSFCH cycle.

Optionally, the L physical resources are physical resources with an index range [ (i2+j×y2) ×l+m+m (a×m×y2), (i2+1+j×y2) ×l+m (a×m×y2) -1] in the H physical resources, i2 represents an index value in Y2 PSSCH slots associated with PSFCH occasions, M is an index value in each Y2 slots associated with one PSFCH occasion, and a represents the number of subchannels per unit time associated with one PSFCH occasion.

It should be noted that, the device is a device to which the method executed by the terminal is applied, and the implementation manner of the embodiment of the method is applicable to the device, so that the same technical effects can be achieved.

The device in the embodiment of the application can be an electronic device, for example, an electronic device with an operating system, or can be a component in the electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, the terminals may include, but are not limited to, the types of terminals 11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the present application are not limited in detail.

The device provided by the embodiment of the application can realize each process realized by the embodiment of the method of fig. 9 and achieve the same technical effects, and in order to avoid repetition, the description is omitted here.

As shown in fig. 13, the embodiment of the present application further provides a communication device 1300, including a processor 1301 and a memory 1302, where the memory 1302 stores a program or an instruction that can be executed on the processor 1301, for example, when the communication device 1300 is a terminal, the program or the instruction is executed by the processor 1301 to implement each step of the foregoing embodiment of the transmission processing method executed by the first terminal, each step of the embodiment of the transmission processing method executed by the second terminal, and each step of the embodiment of the sidelink resource determining method executed by the terminal, and the same technical effect can be achieved, so that repetition is avoided, and details are not repeated here.

The embodiment of the application also provides a terminal, which comprises a processor and a communication interface, wherein the communication interface is coupled with the processor, and the processor is used for running a program or instructions to realize the steps in the embodiment of the method shown in fig. 2, the steps in the embodiment of the method shown in fig. 8 or the steps in the embodiment of the method shown in fig. 9. The terminal embodiment corresponds to the terminal-side method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment, and the same technical effects can be achieved. Specifically, fig. 14 is a schematic diagram of a hardware structure of a terminal for implementing an embodiment of the present application.

The terminal 1400 includes, but is not limited to: at least part of the components of the radio frequency unit 1401, the network module 1402, the audio output unit 1403, the input unit 1404, the sensor 1405, the display unit 1406, the user input unit 1407, the interface unit 1408, the memory 1409, the processor 1410, and the like.

Those skilled in the art will appreciate that terminal 1400 may also include a power source (e.g., a battery) for powering the various components, which may be logically connected to processor 1410 by a power management system so as to perform functions such as managing charging, discharging, and power consumption by the power management system. The terminal structure shown in fig. 14 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine certain components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 1404 may include a graphics processing unit (Graphics Processing Unit, GPU) 14041 and a microphone 14042, with the graphics processor 14041 processing image data of still pictures or video obtained by an image capture device (e.g., a camera) in a video capture mode or an image capture mode. The display unit 1406 may include a display panel 14061, and the display panel 14061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1407 includes at least one of a touch panel 14071 and other input devices 14072. The touch panel 14071 is also referred to as a touch screen. The touch panel 14071 may include two parts, a touch detection device and a touch controller. Other input devices 14072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In the embodiment of the present application, after receiving downlink data from a network side device, the radio frequency unit 1401 may transmit the downlink data to the processor 1410 for processing; in addition, the radio frequency unit 1401 may send uplink data to the network-side device. In general, the radio frequency unit 1401 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

Memory 1409 may be used to store software programs or instructions and various data. The memory 1409 may mainly include a first memory area storing programs or instructions and a second memory area storing data, wherein the first memory area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 1409 may include volatile memory or nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static random access memory (STATIC RAM, SRAM), dynamic random access memory (DYNAMIC RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate Synchronous dynamic random access memory (Double DATA RATE SDRAM, DDRSDRAM), enhanced Synchronous dynamic random access memory (ENHANCED SDRAM, ESDRAM), synchronous link dynamic random access memory (SYNCH LINK DRAM, SLDRAM), and Direct random access memory (DRRAM). Memory 1409 in embodiments of the application includes, but is not limited to, these and any other suitable types of memory.

Processor 1410 may include one or more processing units; optionally, the processor 1410 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, etc., and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 1410.

Wherein, the steps of the method embodiment shown in fig. 2 are performed, and the processor 1410 is configured to obtain the first resource by at least one of the following:

determining based on the first resource selection related information;

based on a predefined or preconfigured determination;

determining based on a configuration of the control node;

Determining based on the high-level configuration;

Determining based on inter-terminal negotiation;

Monitoring or detecting candidate resources;

Randomly selecting from candidate resources;

a radio frequency unit 1401 for transmitting a first reference signal on the first resource, the first reference signal being used for at least one of beam training, beam measurement and beam scanning.

The method embodiment shown in fig. 8 is performed, and a radio frequency unit 1401 is configured to receive a first reference signal transmitted by a first terminal on a first resource, where the first reference signal is used for at least one of beam training, beam measurement and beam scanning.

Wherein, the steps of the method embodiment shown in fig. 9 are performed, and the processor 1410 is configured to determine PSFCH resources according to the mapping rule of the physical sidelink feedback channel PSFCH;

Wherein the PSFCH mapping rules satisfy at least one of:

PSFCH mapping is carried out in M PSFCH periods, wherein M is an integer not less than 1;

The P sub-channels correspond to the same PSFCH resources;

The location of PSFCH physical resource blocks PRBs is determined first and then PSFCH PRB is extended over the interleaving block interlace.

It can be appreciated that the implementation process of each implementation manner mentioned in this embodiment may refer to the related description of the method embodiment, and achieve the same or corresponding technical effects, so that repetition is avoided and detailed description is omitted herein.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored, where the program or the instruction implements each process of the foregoing transmission processing method embodiment, or each process of the foregoing sidelink resource determining method embodiment and achieves the same technical effect when executed by a processor, and in order to avoid repetition, details are not repeated herein.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc. In some examples, the readable storage medium may be a non-transitory readable storage medium.

The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or instructions to implement each process of the above transmission processing method embodiment, or each process of the above sidelink resource determining method embodiment and achieve the same technical effect, so that repetition is avoided, and no further description is provided herein.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiments of the present application further provide a computer program/program product stored in a storage medium, where the computer program/program product is executed by at least one processor to implement each process of the foregoing transmission processing method embodiment, or each process of the foregoing sidelink resource determination method embodiment, and achieve the same technical effects, and for avoiding repetition, a detailed description is omitted herein.

The embodiment of the application also provides a wireless communication system, which comprises: a terminal operable to perform the steps of the transmission processing method as described above or to perform the steps of the sidelink resource determination method as described above.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the description of the embodiments above, it will be apparent to those skilled in the art that the above-described example methods may be implemented by means of a computer software product plus a necessary general purpose hardware platform, but may also be implemented by hardware. The computer software product is stored on a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes instructions for causing a terminal or network side device to perform the methods according to the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms of embodiments may be made by those of ordinary skill in the art without departing from the spirit of the application and the scope of the claims, which fall within the protection of the present application.

Claims (71)

1. A transmission processing method, comprising: The first terminal obtains the first resource in at least one of the following ways: Determining based on the first resource selection related information; Based on a predefined or preconfigured determination; Determined based on the configuration of the control node; Determined based on high-level configuration; Determined based on negotiation between terminals; Monitor or detect candidate resources; Randomly select among candidate resources; The first terminal transmits a first reference signal on the first resource, where the first reference signal is used for at least one of beam training, beam measurement, and beam scanning. 2. The method according to claim 1, wherein the first resource selection related information comprises at least one of the following: an identifier of the first terminal; grouping information of the first terminal; a direct communication request DCR associated with the first reference signal; The first reference signal is associated with a physical sidelink control channel PSCCH. 3. The method according to claim 1 or 2, wherein the first resource satisfies at least one of the following: The first resource is located on a specific carrier; The first resource is located on a specific bandwidth part BWP; The first resource is located in a specific resource pool. 4. The method according to any one of claims 1 to 3, wherein the first terminal transmits a first reference signal on the first resource, comprising: The first terminal sends the first reference signal on a first resource within a first time window or a first timer time. 5. The method according to any one of claims 1 to 4, wherein the first terminal transmits a first reference signal on the first resource, comprising: The first terminal repeatedly sends the first reference signal multiple times. 6. The method according to any one of claims 1 to 5, characterized in that the first resource is also used to transmit at least one of the following: source user information; target user information. 7. The method according to any one of claims 1 to 6, further comprising: After sending the first reference signal, the first terminal receives first beam feedback information sent by a second terminal using a second resource. 8 . The method according to claim 7 , wherein the transmission time of the first beam feedback information corresponds to the transmission time of the first reference signal. 9. The method according to claim 8 is characterized in that the second resource is a resource within the transmission time of the first beam feedback information. 10. The method according to any one of claims 7 to 9, characterized in that when a first condition is met, the transmission time of the corresponding first beam feedback information is allowed to at least partially overlap; or when the first condition is not met, the transmission time of the corresponding first beam feedback information is not allowed to overlap; The first condition includes at least one of the following: The beam directions are the same; The unified transmission configuration indicates that the TCI status is the same; The relationship is the same for quasi-co-sited QCL; The index is the same; The sequence is the same; Resource locations have associative relationships. 11. The method according to claim 9 or 10, characterized in that the first resource has a corresponding relationship with one or more of the second resources. 12. The method according to any one of claims 7 to 11, characterized in that when the first reference signal is transmitted on a first resource pool and the first beam feedback information is transmitted on a second resource pool, The second resource pool is the first resource pool; or, The first resource pool has a corresponding relationship with one or more of the second resource pools; or The second resource pool is a resource pool where resources for transmitting the first beam feedback information are located. 13. The method according to claim 12, characterized in that, when a plurality of the first reference signals meet the second condition, the plurality of the first reference signals are transmitted on the same first resource pool, and the corresponding first beam feedback information is transmitted on the first resource pool; The second condition includes at least one of the following: The beam directions are the same; TCI status is the same; The QCL relationship is the same; The index is the same; The sequence is the same; Located on the same antenna panel. 14. The method according to any one of claims 7 to 13, wherein the first beam feedback information comprises at least one of the following: Source user information; Target user information; resource locations of one or more first reference signals; measurement results of one or more first reference signals; Receive feedback; DCR. 15. The method according to any one of claims 7 to 14 is characterized in that the bearer channel of the first beam feedback information includes at least one of a physical sidelink feedback channel PSFCH, a physical sidelink shared channel PSSCH and a PSCCH. 16. The method according to any one of claims 7 to 15, characterized in that the transmission resource of the first beam feedback information includes a first part and a second part, and the first part and the second part have a corresponding relationship; The first part is used to transmit reception feedback information, and the second part is used for the first terminal to send a DCR, or the second terminal to transmit at least one of the following: The remaining information in the first beam feedback information except the received feedback information; Source user information; DCR; A second reference signal, where the second reference signal is used for at least one of beam training, beam measurement, and beam scanning. 17. The method according to any one of claims 1 to 16, characterized in that after the first terminal transmits the first reference signal on the first resource, the method further comprises: The first terminal receives a second reference signal sent by the second terminal on a third resource, where the second reference signal is used for at least one of beam training, beam measurement, and beam scanning. The method according to claim 17, characterized in that the third resource is a resource within a transmission time of the second reference signal. 19. The method according to any one of claims 1 to 18, characterized in that after the first terminal transmits the first reference signal on the first resource, the method further comprises: The first terminal receives the DCR sent by the second terminal on the fourth resource. 20. The method according to claim 19, wherein the DCR sent by the second terminal, or the PSCCH where the DCR is located, or the PSSCH where the DCR is located, comprises at least one of the following: Establishing target information; information of the first reference signal; The first beam feedback information. 21. The method according to claim 19 or 20, characterized in that the fourth resource is a resource within a transmission time during which the second terminal sends the DCR. 22. The method according to any one of claims 7 to 16, characterized in that after the first terminal receives the first beam feedback information sent by the second terminal, it also includes: The first terminal sends the DCR on the fifth resource. 23. The method according to claim 22, wherein the first terminal sends the DCR on the fifth resource, comprising: The first terminal sends a DCR to a third terminal, where the third terminal includes at least one of the following: a terminal sending the first beam feedback information; A terminal determined according to target user information in the first beam feedback information; The terminal is determined based on the target user information provided by the application layer. 24. The method according to claim 22 or 23, further comprising: The first terminal obtains the fifth resource by at least one of the following methods: Determined based on the configuration of the control node; Determined based on the second terminal indication. 25. The method according to any one of claims 22 to 24, characterized in that the fifth resource is a resource within a transmission time during which the first terminal sends the DCR. 26. The method according to any one of claims 22 to 25, characterized in that the first terminal determines the power of sending the DCR according to at least one of the following: Downlink path loss; The maximum transmit power allowed by the terminal; Sidelink path loss. 27. The method according to claim 17 or 18, characterized in that after the first terminal receives the second reference signal transmitted by the second terminal on the third resource, the method further comprises: The first terminal sends second beam feedback information to the second terminal on a sixth resource. 28. The method according to claim 27, wherein before the first terminal sends the second beam feedback information to the second terminal on the sixth resource, the method further comprises: The first terminal obtains the sixth resource by at least one of the following methods: Determined based on the configuration of the control node; Determined based on the second terminal indication. 29. The method according to claim 27 or 28, characterized in that the sixth resource is a resource within the transmission time of the second beam feedback information. 30. The method according to any one of claims 19 to 21, characterized in that after the first terminal receives the DCR sent by the second terminal on the fourth resource, the method further comprises: The first terminal sends a direct communication response DCA to the second terminal on a seventh resource. 31. The method according to claim 30, characterized in that before the first terminal sends a direct communication response DCA to the second terminal on the seventh resource, it also includes: The first terminal obtains the seventh resource by at least one of the following methods: Determined based on the configuration of the control node; Determined based on the second terminal indication. 32. The method according to claim 30 or 31, characterized in that the seventh resource is a resource within a transmission time during which the first terminal sends a DCA. 33. The method according to any one of claims 30 to 32, wherein the first terminal determines the power of sending DCA according to at least one of the following: Downlink path loss; The maximum transmit power allowed by the terminal; Sidelink path loss. 34. The method according to any one of claims 22 to 26, further comprising: After sending the DCR, the first terminal receives a DCA on an eighth resource. 35. The method according to claim 34, characterized in that the eighth resource is a resource within the transmission time of receiving DCA. 36. The method according to any one of claims 9 to 16, further comprising: In a case where the first beam feedback information is not received, the first terminal performs at least one of the following: Sending a negative acknowledgement NACK of the first beam feedback information on a ninth resource; Switch the beam direction of the first reference signal, and resend the first reference signal. 37. The method according to any one of claims 19 to 21, further comprising: In the case where the DCR is not received, the first terminal performs at least one of the following: sending a NACK for the DCR on a tenth resource; Switch the beam direction of the first reference signal, and resend the first reference signal. 38. The method according to any one of claims 1 to 37, further comprising: In case that the DCA is not received, or a NACK of the DCR is received, or an ACK of the DCR is not received, or a NACK of the DCR is not received, the first terminal performs at least one of the following: Sending a NACK for the DCA on an eleventh resource; Resend DCR; Trigger resending of DCA; Switch the beam direction of the first reference signal, and resend the first reference signal. 39. The method according to any one of claims 30 to 33, further comprising: In case that sending the DCA fails, the first terminal resends the DCA. 40. The method according to any one of claims 1 to 39, characterized in that the first reference signal and the DCR associated with the first reference signal are jointly transmitted. 41. A transmission processing method, comprising: The second terminal receives a first reference signal transmitted by the first terminal on a first resource, where the first reference signal is used for at least one of beam training, beam measurement, and beam scanning. 42. The method according to claim 41, wherein the first resource satisfies at least one of the following: The first resource is located on a specific carrier; The first resource is located on a specific BWP; The first resource is located in a specific resource pool. 43. The method according to claim 41 or 42, further comprising: After receiving the first reference signal, the second terminal sends first beam feedback information on a second resource. 44. The method according to claim 43, wherein the second terminal sends the first beam feedback information on the second resource, comprising: The second terminal repeatedly sends the first beam feedback information multiple times within the transmission time of the first beam feedback information. 45. The method according to claim 43 or 44, characterized in that before the second terminal sends the first beam feedback information on the second resource, it also includes: The second terminal determines the power of the first beam feedback information according to at least one of the following: Downlink path loss; The maximum transmit power allowed by the terminal; Sidelink path loss. 46. The method according to any one of claims 41 to 45, characterized in that after the second terminal receives the first reference signal transmitted by the first terminal on the first resource, the method further comprises: The second terminal sends a second reference signal on a third resource, where the second reference signal is used for at least one of beam training, beam measurement, and beam scanning. 47. The method according to claim 46, characterized in that before the second reference signal sent by the second terminal on the third resource, the method further comprises: The second terminal obtains the third resource in at least one of the following ways: determining based on the second resource selection information; Based on a predefined or preconfigured determination; Determined based on the configuration of the control node; Determined based on high-level configuration; Determining based on the first terminal indication; Monitor or detect candidate resources; Randomly select among candidate resources. 48. The method according to any one of claims 41 to 47, characterized in that after the second terminal receives the first reference signal transmitted by the first terminal on the first resource, the method further comprises: The second terminal sends the DCR on a fourth resource. 49. The method according to claim 48, characterized in that before the second terminal sends the DCR on the fourth resource, it also includes: The second terminal obtains the fourth resource by at least one of the following methods: Determine based on the second resource selection related information; Determined based on the configuration of the control node; Determined based on the first terminal indication. 50. The method according to claim 48 or 49, characterized in that before the second terminal sends the DCR on the fourth resource, it also includes: The second terminal determines a fourth terminal according to the first reference signal; The second terminal determines whether the fourth terminal matches its own connection establishment target, and determines whether to send the DCR according to the matching result. 51. The method according to any one of claims 43 to 45, characterized in that after the second terminal sends the first beam feedback information on the second resource, it also includes: The second terminal receives the DCR sent by the first terminal on the fifth resource. 52. The method according to claim 46 or 47, characterized in that after the second terminal sends the second reference signal on the third resource, it also includes: The second terminal receives second beam feedback information sent by the first terminal on the sixth resource. 53. The method according to any one of claims 48 to 50, characterized in that after the second terminal sends the DCR on the fourth resource, it also includes: The second terminal receives the DCA sent by the first terminal on the seventh resource. 54. The method according to claim 51, characterized in that after the second terminal receives the DCR sent by the first terminal on the fifth resource, the method further comprises: The second terminal sends a DCA on an eighth resource. 55. The method according to claim 54, characterized in that before the second terminal sends the DCA on the eighth resource, it also includes: The second terminal obtains the eighth resource by at least one of the following methods: Determined based on the configuration of the control node; Determined based on the first terminal indication. 56. The method according to any one of claims 43 to 45, characterized in that after the second terminal sends the first beam feedback information on the second resource, it also includes: In a case where the DCR is not received, or a NACK of the first beam feedback information is received, or an ACK of the first beam feedback information is not received, or a NACK of the first beam feedback information is not received, the second terminal performs at least one of the following: resending the first beam feedback information; sending a NACK for the DCR on a twelfth resource; Trigger retransmission of the first reference signal in different beam directions Trigger new sending of DCR; The first reference signal is received at a next first resource location. 57. The method according to any one of claims 48 to 50, characterized in that after the second terminal sends the DCR on the fourth resource, it also includes: In case that the DCA is not received, or a NACK of the DCR is received, or an ACK of the DCR is not received, or a NACK of the DCR is not received, the first terminal performs at least one of the following: Sending a NACK for the DCA on an eleventh resource; Resend DCR; Trigger resending of DCA; Trigger resending of the first reference signal in different beam directions. 58. The method according to any one of claims 54 or 55, further comprising: In case that sending the DCA fails, the second terminal resends the DCA. 59. The method according to claim 46 or 47, characterized in that the second reference signal and the DCR associated with the second reference signal are jointly transmitted. 60. A method for determining sidelink resources, comprising: The terminal determines the PSFCH resource according to the physical sidelink feedback channel PSFCH mapping rule; The PSFCH mapping rule satisfies at least one of the following: PSFCH mapping is performed within M PSFCH periods, where M is an integer not less than 1; P subchannels correspond to the same PSFCH resource; First determine the location of the PSFCH physical resource block (PRB), and then extend the PSFCH PRB to the interlace block. 61. The method according to claim 60, characterized in that the PSFCH resource satisfies at least one of the following: W1 interlace; W 2 PRBs; W 3 code domain resources on PRB; W 4 cyclic shift pairs; Among them, W1, W2, W3, and W4 are positive integers. 62. The method according to claim 60, characterized in that the PSFCH set where the PSFCH resource is located occupies a total of H physical resources, where H is a positive integer; The physical resource is at least one of a PRB, an interlace, a code domain resource, a cyclic shift pair, a portion of a PRB on an interlace, and a PRB cyclic shift on an interlace. 63. The method according to claim 60, wherein the P subchannels satisfy at least one of the following: Sub-channels in the same time domain; Subchannels on the same frequency domain; P subchannels are continuous; The P sub-channels are not contiguous. 64. The method according to claim 62 is characterized in that, for the PSSCH time slot and subchannel associated with the PSFCH sending time domain position, the PSFCH sending resources corresponding to the subchannel on the PSSCH time slot are L physical resources among the H physical resources. 65. The method according to claim 64 is characterized in that the L physical resources are physical resources with an index range of [(i1+j*Y1)*L, (i1+1+j*Y1)*L-1] among the H physical resources, i1 represents the index value of the PSSCH time slot associated with the PSFCH, j represents the index value of the subchannel, Y1 represents the number of time slots associated with a PSFCH opportunity, Y1 is equal to M*Y2, and Y2 represents the number of time slots contained in a PSFCH cycle. 66. The method according to claim 64 is characterized in that the L physical resources are physical resources among the H physical resources whose index range is [(i2+j*Y2)*L+m*(A*M*Y2),(i2+1+j*Y2)*L+m*(A*M*Y2)-1], i2 represents the index value within the Y2 PSSCH time slots associated with the PSFCH opportunity, m is the index value of each Y2 time slots associated with a PSFCH opportunity, and A represents the number of subchannels per unit time associated with a PSFCH opportunity. 67. A transmission processing device, comprising: The first processing module is configured to obtain the first resource by at least one of the following methods: Determining based on the first resource selection related information; Based on a predefined or preconfigured determination; Determined based on the configuration of the control node; Determined based on high-level configuration; Determined based on negotiation between terminals; Monitor or detect candidate resources; Randomly select among candidate resources; The first sending module is used to transmit a first reference signal on the first resource, where the first reference signal is used for at least one of beam training, beam measurement and beam scanning. 68. A transmission processing device, comprising: The first receiving module is used to receive a first reference signal transmitted by a first terminal on a first resource, where the first reference signal is used for at least one of beam training, beam measurement and beam scanning. 69. A sidelink resource determination device, comprising: The second processing module is used to determine the PSFCH resource according to the physical sidelink feedback channel PSFCH mapping rule; The PSFCH mapping rule satisfies at least one of the following: PSFCH mapping is performed within M PSFCH periods, where M is an integer not less than 1; P subchannels correspond to the same PSFCH resource; First determine the location of the PSFCH physical resource block (PRB), and then extend the PSFCH PRB to the interleaving block iYterlace. 70. A terminal, characterized in that it comprises a processor and a memory, the memory storing a program or instruction that can be run on the processor, and the program or instruction, when executed by the processor, implements the steps of the transmission processing method as described in any one of claims 1 to 40, or the steps of the transmission processing method as described in any one of claims 41 to 59, or the steps of the side-link resource determination method as described in any one of claims 60 to 66. 71. A readable storage medium, characterized in that a program or instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the transmission processing method according to any one of claims 1 to 40, or the steps of the transmission processing method according to any one of claims 41 to 59, or the steps of the side-link resource determination method according to any one of claims 60 to 66 are implemented.