CN117320176A

CN117320176A - SL data transmission method, first terminal and second terminal

Info

Publication number: CN117320176A
Application number: CN202210701891.8A
Authority: CN
Inventors: 李萍; 刘思綦; 纪子超
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2023-12-29
Also published as: WO2023246774A1

Abstract

The application discloses a SL data transmission method, a first terminal and a second terminal, which belong to the technical field of communication, and the SL data transmission method in the embodiment of the application comprises the following steps: under the condition that a first event is met, the first terminal carries out rate matching or punching on a first transmission resource on a first carrier wave to obtain a target transmission resource; the first terminal sends M1 pieces of first information based on the target sending resource; or the first terminal sends or receives each piece of first information based on the priority of M1 pieces of first information and the priority of M2 pieces of second information; the first transmission resource is used for the first terminal to transmit each piece of first information.

Description

SL data transmission method, first terminal and second terminal

Technical Field

The application belongs to the technical field of communication, and particularly relates to a SL data transmission method, a first terminal and a second terminal.

Background

In order to meet the requirements of long term evolution Advanced (Long Term Evolution-Advanced, LTE-a) for a downlink peak speed up to 1Gbps and an uplink peak speed up to 500Mbps, it is necessary to provide a maximum transmission bandwidth of 100MHz, but LTE-a proposes a solution for carrier aggregation (Carrier Aggregation, CA) due to the scarcity of continuous spectrum of large bandwidth. Carrier aggregation is the aggregation of 2 or more carrier elements (Component Carrier, CC) together to support a larger transmission bandwidth (up to 100 MHz).

In a New Radio, NR, sidelink (SL) carrier aggregation application, a User Equipment (UE) may transmit a physical Sidelink shared channel (Physical Sidelink Shared Channel, PSSCH) and receive a physical Sidelink feedback channel (Physical Sidelink Feedback Channel, PSFCH) or PSSCH on multiple carrier units within a frequency band (band), resulting in a transmission/reception collision of different carriers.

Disclosure of Invention

The embodiment of the application provides a SL data transmission method, a first terminal and a second terminal, which can solve the problem of receiving and transmitting conflict of different carriers.

In a first aspect, a method for transmitting side link SL data is provided, the method comprising:

in the case where the first event is satisfied,

the first terminal performs rate matching or punching on a first transmission resource on a first carrier wave to obtain a target transmission resource; the first terminal sends M1 pieces of first information based on the target sending resource;

or the first terminal sends or receives each piece of first information based on the priority of M1 pieces of first information and the priority of M2 pieces of second information; the first transmission resource is used for the first terminal to transmit the first information;

Wherein the first event includes at least one of:

the first sending resource overlaps with a first opportunity and/or a first receiving resource of the first terminal on at least one second carrier; the first receiving resource is used for receiving M2 pieces of second information by the first terminal;

the first terminal receives a first message from the second terminal, wherein the first message is used for indicating that a second receiving resource of the second terminal on the first carrier is overlapped with a second opportunity and/or a second sending resource of the second terminal on at least one third carrier; the second receiving resource is used for the second terminal to receive each piece of first information from the first terminal;

the second receiving resource of the second terminal on the first carrier is overlapped with the third sending resource of the second terminal and/or the third terminal on at least one fourth carrier;

the first terminal receives first indication information from the second terminal; the first indication information is used for indicating the first terminal to perform SL transmission on one or more carriers based on first overhead or indicating related information of rate matching or punching of the first terminal.

In a second aspect, a method for transmitting side link SL data is provided, the method comprising:

in the case that the second event is satisfied,

the second terminal performs de-rate matching or demodulation or reception on the third receiving resource on the first carrier wave to obtain a target receiving resource; the second terminal receives N1 pieces of third information based on the target receiving resource;

or the second terminal receives each third information or sends each fourth information based on the priority of N1 third information and the priority of N2 fourth information; the third receiving resource is used for the second terminal to receive each piece of third information;

wherein the second event comprises at least one of:

the third receiving resource overlaps with a fourth opportunity and/or a fourth transmitting resource of the second terminal on at least one sixth carrier; the fourth transmission resource is used for the second terminal to transmit N2 pieces of fourth information;

the second terminal receives a third message from the first terminal, wherein the third message is used for indicating that a fifth sending resource of the first terminal on the first carrier is overlapped with a fifth opportunity and/or a fourth receiving resource of the first terminal on at least one seventh carrier; the fifth sending resource is used for the first terminal to send each piece of third information to the second terminal;

A fifth transmission resource of the first terminal on the first carrier is overlapped with a sixth opportunity and/or a fifth receiving resource of the first terminal and/or a fourth terminal on at least one eighth carrier;

the second terminal receives second indication information from the first terminal; the second indication information is used for indicating the second terminal to perform SL reception on one or more carriers based on second overhead, or indicating the second terminal to perform SL reception based on the pattern after rate matching or puncturing of the first terminal.

In a third aspect, there is provided a side link SL data transmission apparatus, the apparatus comprising:

the sending module is used for carrying out rate matching or punching on the first sending resource on the first carrier wave under the condition of meeting the first event to obtain a target sending resource; m1 pieces of first information are sent based on the target sending resource;

or, based on the priority of the M1 pieces of first information and the priority of the M2 pieces of second information, transmitting each piece of first information or receiving each piece of second information; the first transmission resource is used for the first terminal to transmit each piece of first information;

wherein the first event includes at least one of:

In a fourth aspect, there is provided a sidelink SL data transmission apparatus, comprising:

The receiving module is used for carrying out rate de-matching or demodulation or receiving on the third receiving resource on the first carrier wave under the condition that the second event is met, so as to obtain a target receiving resource; and receiving N1 pieces of third information based on the target reception resource;

or, based on the priority of the N1 pieces of third information and the priority of the N2 pieces of fourth information, receiving each piece of third information or transmitting each piece of fourth information; the third receiving resource is used for the second terminal to receive each piece of third information;

wherein the second event comprises at least one of:

the third receiving resource overlaps with a fourth opportunity and/or a fourth sending resource of the second terminal on at least one sixth carrier; the fourth transmission resource is used for the second terminal to transmit N2 pieces of fourth information;

In a fifth aspect, there is provided a first terminal comprising a processor and a memory storing a program or instructions executable on the processor, which program or instructions when executed by the processor implement the steps of the method as described in the first aspect.

In a sixth aspect, a first terminal is provided, including a processor and a communication interface; the communication interface is used for carrying out rate matching or punching on a first sending resource on a first carrier wave under the condition that a first event is met, so as to obtain a target sending resource; m1 pieces of first information are sent based on the target sending resource;

wherein the first event includes at least one of:

In a seventh aspect, there is provided a second terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the second aspect.

An eighth aspect provides a second terminal, including a processor and a communication interface; the communication interface is used for performing rate de-matching or demodulation or receiving on the third receiving resource on the first carrier wave under the condition that the second event is met, so as to obtain a target receiving resource; and receiving N1 pieces of third information based on the target reception resource;

wherein the second event comprises at least one of:

In a ninth aspect, a sidelink SL data transmission system is provided, comprising: a first terminal operable to perform the steps of the method as described in the first aspect and a second terminal operable to perform the steps of the method as described in the second aspect.

In a tenth 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 according to the first aspect or performs the steps of the method according to the second aspect.

In an eleventh aspect, there is provided a chip comprising a processor and a communication interface coupled to the processor, the processor being for running a program or instructions to implement the method according to the first aspect or to implement the method according to the second aspect.

In a twelfth aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executed by at least one processor to implement 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.

In the embodiment of the application, under the condition that the problem of receiving and transmitting conflict on different carriers exists, the first terminal performs rate matching or punching on the first transmission resource to obtain a target transmission resource, and sends M1 pieces of first information based on the target transmission resource; or the first terminal determines to send the first information or receive the second information based on the priority of M1 pieces of first information to be sent and the priority of M2 pieces of second information to be received, so that the problem of receiving and sending conflict on different carriers in a carrier aggregation scene is solved, and SL transmission performance can be improved.

Drawings

Fig. 1 is a schematic diagram of a wireless communication system to which embodiments of the present application are applicable;

fig. 2 is a schematic flow chart of a SL data transmission method according to an embodiment of the present disclosure;

FIG. 3 is one of the resource distribution diagrams on different CCs provided in the embodiments of the present application;

fig. 4 is a second flowchart of a SL data transmission method according to an embodiment of the present disclosure;

FIG. 5 is a second schematic diagram of resource distribution on different CCs according to an embodiment of the present application;

FIG. 6 is a third diagram illustrating resource distribution on different CCs according to an embodiment of the present application;

FIG. 7 is a fourth schematic diagram of resource distribution on different CCs provided by embodiments of the present application;

FIG. 8 is a fifth schematic diagram of resource distribution on different CCs provided in an embodiment of the present application;

FIG. 9 is a sixth schematic diagram of resource distribution on different CCs provided by embodiments of the present application;

FIG. 10 is a diagram of a seventh embodiment of resource distribution on different CCs;

FIG. 11 is a schematic diagram of resource distribution on different CCs according to an embodiment of the present application;

FIG. 12 is a diagram illustrating resource distribution on different CCs according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of an SL data transmission device according to an embodiment of the present disclosure;

Fig. 14 is a second schematic structural diagram of a SL data transmission device according to the present embodiment;

fig. 15 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

fig. 16 is a schematic structural diagram of a first terminal provided in an embodiment of the present application;

fig. 17 is a schematic structural diagram of a second terminal according to an embodiment of the present application.

Detailed Description

Technical solutions in 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 obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

The terms first, second and the like in the description and in the claims, 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 terms "first" and "second" are generally intended to be used in a generic sense and not to limit the number of objects, for example, the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It is noted that the techniques described in 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), and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the techniques described are applicable to bothThe above-mentioned systems and radio technologies may also be used for other systems and radio technologies. The following description describes a New air interface (NR) system for purposes of example and uses NR terminology in much of the following description, but the techniques are also applicable to communication systems other than NR system applications, such as generation 6 (6) ^th Generation, 6G) communication system.

Fig. 1 is a schematic diagram of a wireless communication system to which the embodiment of the present application is applicable, and the wireless communication system shown in fig. 1 includes a terminal 11 and a network side device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a furniture), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and 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.. Note that, the specific type of the terminal 11 is not limited in the embodiment of the present application.

The network-side device 12 may comprise an access network device or core network device, wherein the access network device may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. The access network device may include a base station, a WLAN access point, a WiFi node, or the like, where the base station may be referred to as a node B, an evolved node B (eNB), an access point, 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, a home evolved node B, a transmission receiving point (Transmitting Receiving Point, TRP), or some other suitable terminology in the field, and the base station is not limited to a specific technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiment of the present application, only the base station in the NR system is described by way of example, and the specific type of the base station is not limited. The core network device may include, but is not limited to, at least one of: core network nodes, core network functions, mobility management entities (Mobility Management Entity, MME), access mobility management functions (Access and Mobility Management Function, AMF), session management functions (Session Management Function, SMF), user plane functions (User Plane Function, UPF), policy control functions (Policy Control Function, PCF), policy and charging rules function units (Policy and Charging Rules Function, PCRF), edge application service discovery functions (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management, UDM), unified data repository (Unified Data Repository, UDR), home subscriber server (Home Subscriber Server, HSS), centralized network configuration (Centralized network configuration, CNC), network storage functions (Network Repository Function, NRF), network opening functions (Network Exposure Function, NEF), local NEF (or L-NEF), binding support functions (Binding Support Function, BSF), application functions (Application Function, AF), location management functions (location manage function, LMF), enhanced services mobile location center (Enhanced Serving Mobile Location Centre, E-SMLC), network data analysis functions (network data analytics function, NWDAF), and the like. In the embodiment of the present application, only the core network device in the NR system is described as an example, and the specific type of the core network device is not limited.

The SL data transmission method, the first terminal, and the second terminal provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings through some embodiments and application scenarios thereof.

The embodiments of the present application provide a solution to the problem of transmission and reception conflicts between different carriers. In order to facilitate a clearer understanding of the embodiments of the present application, some related technical knowledge will be described first.

1. Carrier aggregation

In order to meet the requirement of the LTE-a downlink peak speed of 1Gbps and uplink peak speed of 500Mbps, it is necessary to provide a maximum transmission bandwidth of 100MHz, but LTE-a proposes a solution for carrier aggregation due to the scarcity of continuous spectrum with such a large bandwidth.

Carrier aggregation is the aggregation of 2 or more carrier elements together to support a larger transmission bandwidth (up to 100 MHz). In practice, each carrier element corresponds to a separate cell. Typically 1 carrier element can be equated to 1 cell. The maximum bandwidth of each carrier unit is 20MHz. In order to efficiently utilize the fragmented spectrum, carrier aggregation supports aggregation between different carrier units:

(1) Carrier units of the same or different bandwidths;

(2) Contiguous or non-contiguous carrier elements within the same frequency band;

(3) Carrier elements within different frequency bands.

These several cases are indistinguishable from a baseband (baseband) implementation perspective. This mainly affects the complexity of the implementation of the radio frequency unit.

2. Side link (Sidelink, SL)

The long term evolution (Long Term Evolution, LTE) system supports a Sidelink (SL) from release 12 for direct data transmission between end User Equipments (UEs) without via network Equipment.

The LTE ideal design supports two resource allocation modes, a scheduled resource allocation (Scheduled resource allocation) mode and an autonomous resource selection (autonomous resource selection) mode, respectively. The former is controlled by the network side equipment and allocates resources for each UE, and the latter is autonomously selected by the UE.

Starting from release 15, LTE supports the Sidelink carrier aggregation. The CA and Uu interfaces of LTE Sidelink (i.e., downlink and uplink) are different, and there is no division of primary carrier (Primary component carrier, PCC) and secondary carrier (Secondary component carrier, SCC). The UE in autonomous resource selection mode performs resource awareness (sensing) and resource reservation on each CC independently.

The design of LTE sidlink is applicable to specific public safety transactions, such as emergency communications in disaster sites such as fire or earthquake, or internet of vehicles (vehicle to everything, V2X) communications, etc. The internet of vehicles communication includes various services such as basic security type communication, advanced (automatic) driving, formation, sensor expansion, and the like. Since LTE sip only supports broadcast communications, it is mainly used for basic security class communications, and other advanced V2X services will be supported by NR sip.

The 5G NR system can be used for the working frequency band which is not supported by LTE and is above 6GHz, supports larger working bandwidth, and also supports Sidelink interface communication of direct communication between terminals.

The SL data transmission method provided in the embodiment of the present invention may be applied to the first terminal, and the embodiment of the present invention uses the first terminal as the transmitting end for illustration, but the first terminal is not limited to be used only for transmitting SL data.

Fig. 2 is one of the flow charts of the SL data transmission method according to the embodiment of the present application, and as shown in fig. 2, the method includes step 201; wherein:

step 201, under the condition that the first event is satisfied, the first terminal performs rate matching or puncturing on the first transmission resource on the first carrier wave to obtain a target transmission resource; the first terminal sends M1 pieces of first information based on the target sending resource;

or the first terminal sends or receives each first information based on the priority of M1 pieces of first information and the priority of M2 pieces of second information; the first transmission resource is used for the first terminal to transmit each first information.

Wherein the first event includes at least one of:

the first sending resource overlaps with a first opportunity and/or a first receiving resource of the first terminal on at least one second carrier; the first receiving resource is used for the first terminal to receive each piece of second information;

the second receiving resource of the second terminal on the first carrier is overlapped with the third transmitting resource of the second terminal and/or the third terminal on at least one fourth carrier;

the first terminal receives first indication information from the second terminal; the first indication information is used for indicating the first terminal to perform SL transmission on one or more carriers based on first overhead or indicating related information of rate matching or puncturing of the first terminal.

It should be noted that the embodiments of the present application may be applied in a scenario where carrier aggregation technology is applied to SL.

Specifically, when the NR SL applies carrier aggregation technology, since the NR SL supports multiple subcarrier intervals and the physical secondary link feedback channels (physical sidelink feedback channel, PSFCH) are configured according to the resource pool, there may be overlapping portions between the physical secondary link shared channels (Pysical Sidelink Share Channel, PSSCH) and the PSFCH on different carriers in carrier aggregation, fig. 3 is one of the resource distribution diagrams on different CCs provided in the embodiment of the present application, as shown in fig. 3, the hatched areas on CC1, CC2 and CC3 represent transmission resources on carriers, the hatched areas represent reception resources on carriers, and the unshaded F area in the figure represents the reserved time for PSFCH on carriers, which can distribute the transmission resources and the reception resources. It can be seen that the PSFCH transmission resource used for transmission on CC1 overlaps with the PSSCH reception resource used for reception on CC2, and the PSFCH transmission resource used for transmission on CC1 also overlaps with the PSSCH reception resource used for reception on CC3, and if the terminal is to transmit PSSCH and receive PSFCH simultaneously on overlapping portions of PSSCH and PSFCH on different carriers of carrier aggregation, half duplex problem of transmission-reception collision occurs.

In addition, since there may be overlapping portions of PSSCH positions configured on different carriers of carrier aggregation, if the UE is to simultaneously transmit and receive PSSCH in the overlapping portions of PSSCH on different carriers of carrier aggregation, half duplex problem of transmission and reception collision may also occur.

In this embodiment of the present application, in a process of performing SL transmission on at least one carrier, when a first event is met, for example, when there is an overlap between a first transmission resource on the first carrier and a timing or a reception resource on another carrier, or when there is an overlap between a second reception resource corresponding to the first transmission resource and a timing or a transmission resource on another carrier, the following steps are performed:

the first terminal performs rate matching or puncturing on the first transmission resource on the first carrier wave to obtain a target transmission resource without receiving and transmitting conflict, and then the first terminal transmits M1 pieces of first information based on the target transmission resource without receiving and transmitting conflict, so that the receiving and transmitting conflict problem of different carrier waves can be effectively solved.

Or, the first terminal may send each first information or receive each second information based on the priority of the M1 first information and the priority of the M2 second information, so as to avoid the transmission and reception conflict generated by simultaneously transmitting and receiving the information.

Specifically, the first event may include any one of the following:

1) The first sending resource overlaps with a first opportunity and/or a first receiving resource of the first terminal on at least one second carrier; the first receiving resource is used for the first terminal to receive each piece of second information;

the first transmission resource may be a resource for transmission.

The first occasion may be understood as a resource reserved on at least one second carrier for transmitting or receiving PSFCH.

The first reception resource may be a resource for reception.

2) The first terminal receives a first message from the second terminal; the first message is used for indicating that a second receiving resource of the second terminal on the first carrier is overlapped with a second time and/or a second sending resource of the second terminal on at least one third carrier; the second receiving resource is used for the second terminal to receive each piece of first information from the first terminal;

specifically, the second terminal may send a first message to a sending end corresponding to the second receiving resource, that is, to the first terminal, so as to instruct the first terminal to perform rate matching or puncturing on the first sending resource corresponding to the second receiving resource, where the second receiving resource on the first carrier overlaps with the second timing and/or the second sending resource on the at least one third carrier, that is, where the receiving resource of the second terminal overlaps with the timing and/or the sending resource on the other carrier;

After receiving the first message, the first terminal performs rate matching or puncturing on the first transmission resource so as to avoid the transmission and reception conflict of the second receiving resource.

In addition, if the receiving end corresponding to the second transmission resource of the second terminal on the at least one third carrier is the first terminal, the second terminal may not inform the first terminal of the first message through a higher layer notification or a transmission signaling.

The first message is used for indicating that one or more positions, symbols or occasions of the second terminal on one or more carriers have a transmission-reception conflict, are unavailable or are available only for transmission, or is used for indicating that one or more positions, symbols or occasions of the first terminal on one or more carriers are unavailable for transmission.

The second receiving resource may be a resource for receiving, and the transmitting end of the second receiving resource includes the first terminal.

The second transmission resource may be a resource for transmission.

The second occasion may be a PSFCH occasion.

In particular, the third carrier and the second carrier may be the same carrier.

3) The second receiving resource of the second terminal on the first carrier is overlapped with the third sending resource of the second terminal and/or the third terminal detected by the second terminal on at least one fourth carrier;

Specifically, when the second receiving resource of the second terminal on the first carrier overlaps with the third transmitting resource of the second terminal and/or the third terminal on the at least one fourth carrier, the second terminal may notify, through a higher layer notification or through a transmission signaling, a transmitting end corresponding to the second receiving resource, that is, notify the first terminal that the second receiving resource has a transmission-reception conflict, or notify that one or more positions, symbols or opportunities of the first terminal on one or more carriers are unavailable for transmission; after receiving the notification, the first terminal performs rate matching or puncturing on the first transmission resource to avoid the transmission and reception conflict with the second reception resource.

In addition, since the receiving resource corresponding to the first transmitting resource is the second receiving resource of the second terminal, the first terminal may also determine whether there is an overlap between the second receiving resource corresponding to the first transmitting resource and the third transmitting resource by detecting the first transmitting resource, and may further determine that one or more positions, symbols or opportunities of the first terminal on one or more carriers are unavailable for transmission according to the portion where the second receiving resource and the third transmitting resource overlap.

The third transmission resource may be a resource for transmission, and the receiving end of the third transmission resource may be the first terminal.

4) The first terminal receives first indication information from the second terminal; the first indication information is used for indicating the first terminal to perform SL transmission on one or more carriers based on first overhead or indicating related information of rate matching or puncturing of the first terminal.

The first indication information may be used, for example, to indicate a first overhead in a Transport Block (TB) size (size) determination process and a second secondary side link control information (Sidelink Control Information, SCI) symbol number determination process;

for another example, a position or symbol may be used to indicate that the first terminal needs rate matching or puncturing;

as another example, it may be used to indicate whether the first terminal needs rate matching or puncturing;

as another example, related information that may be used to indicate how to rate match or puncture;

as another example, carrier information indicating that there is a transmission/reception collision may be used.

The first indication information may be carried by a physical sidelink control channel (physical sidelink control channel, PSCCH) or a PSSCH.

The at least two carriers referred to above may satisfy at least one of:

1. A carrier of intra band;

2. the subcarrier spacing (Subcarrier Spacing, SCS) of the carriers is the same or different;

3. the corresponding Transmissions (TX) are the same or synchronized;

4. the corresponding Radio Frequencies (RF) are the same or different;

5. the corresponding bands are different.

In the SL data transmission method provided in the embodiment of the present invention, under a situation that there is a problem of a transmission/reception collision on different carriers, a first terminal performs rate matching or puncturing on a first transmission resource to obtain a target transmission resource, and transmits M1 pieces of first information based on the target transmission resource; or the first terminal determines to send the first information or receive the second information based on the priority of M1 pieces of first information to be sent and the priority of M2 pieces of second information to be received, so that the problem of receiving and sending conflict on different carriers in a carrier aggregation scene is solved, and SL transmission performance can be improved.

Optionally, the first transmission resource may include at least one of the following:

1) Periodic reserved resources and/or aperiodic reserved resources for transmission;

2) A TB to be transmitted;

3) PSSCH to be transmitted;

4) PSCCH to be transmitted;

5) A PSSCH demodulation reference signal (Demodulation Reference Signal, DMRS) to be transmitted;

6) PSCCH DMRS to be transmitted.

Optionally, the first timing and/or the second timing may include at least one of:

1. PSFCH timing;

2、PSFCH；

3. PSFCH automatic gain control (Automatic Gain Control, AGC);

4. PSFCH Guard Period (GP);

5. GP symbol;

6. AGC symbols;

7. symbols occupied by switching periods (Transmission switching period, TX switching period) are transmitted.

The PSFCH timing may include PSFCH, PSFCH AGC, and PSFCH GP.

Optionally, the first receiving resource may include at least one of:

1) Reserved resources for reception;

2) A TB to be received;

3) PSSCH to be received;

4) PSCCH to be received;

5) PSSCH DMRS to be received;

6) PSCCH DMRS to be received;

7) PSFCH to be received;

8) PSFCH AGC to be received;

9) The PSFCH GP to be received.

Optionally, the second transmission resource and/or the third transmission resource may include at least one of the following:

1. periodic reserved resources and/or aperiodic reserved resources for transmission;

2. a TB to be transmitted;

3. PSSCH to be transmitted;

4. PSCCH to be transmitted;

5. PSSCH DMRS to be transmitted;

6. PSCCH DMRS to be transmitted;

7. PSFCH to be sent;

8. PSFCH AGC to be sent;

9. the PSFCH GP to be transmitted.

Optionally, the second receiving resource may include at least one of:

1) Reserved resources for reception;

2) A TB to be received;

3) PSSCH to be received;

4) PSCCH to be received;

5) PSSCH DMRS to be received;

6) PSCCH DMRS to be received;

7) Resources for reception are recommended or desired.

Optionally, the first overhead may include at least one of:

1. overlapping portions of a third reception resource of the second terminal on the first carrier with a fourth occasion and/or a fourth transmission resource of the second terminal on the at least one sixth carrier;

2. overlapping portions of a third reception resource of the second terminal on the first carrier with a fifth occasion and/or a fourth reception resource of the first terminal on the at least one seventh carrier;

3. and overlapping portions of the third reception resource of the second terminal on the first carrier and the sixth opportunity and/or the fifth reception resource of the first terminal and/or the fourth terminal on the at least one eighth carrier.

Optionally, the implementation manner of the first terminal performing rate matching on the first transmission resource on the first carrier may include:

The first terminal, when determining a resource mapping of a first transmission resource on a first carrier, satisfies at least one of:

1) A position or symbol mapping of the first transmission resource in which there is no overlap with the first occasion and/or the first reception resource on the at least one second carrier;

2) The first transmission resource is not in a position or symbol mapping overlapping with the first occasion and/or the first reception resource on the at least one second carrier;

3) A position or symbol mapping of the first transmission resource in which there is no overlap with the second occasion and/or the second transmission resource on the at least one third carrier;

4) The first transmission resource is not in a position or symbol mapping overlapping with the second occasion and/or the second transmission resource on the at least one third carrier;

5) A position or symbol mapping of the first transmission resource in which there is no overlap with a third transmission resource on at least one fourth carrier;

6) The first transmission resource is not mapped in a position or symbol overlapping with a third transmission resource on at least one fourth carrier.

Optionally, the implementation manner of the first terminal to punch the first transmission resource on the first carrier may include:

when the first terminal punches the first transmission resource on the first carrier, at least one of the following is satisfied:

1. The first transmission resource is transmitted at a position or symbol that does not overlap with the first occasion and/or the first reception resource on the at least one second carrier;

2. the first transmission resource is not transmitted at a position or symbol overlapping with the first occasion and/or the first reception resource on the at least one second carrier;

3. the first transmission resource is transmitted at a position or symbol which does not overlap with the second opportunity and/or the second transmission resource on the at least one third carrier;

4. the first transmission resource is not transmitted at a position or symbol overlapping with the second occasion and/or the second transmission resource on the at least one third carrier;

5. the first transmission resource is transmitted at a position or symbol where there is no overlap with the third transmission resource on the at least one fourth carrier;

6. the first transmission resource is not transmitted in a position or symbol that overlaps with a third transmission resource on at least one fourth carrier.

Optionally, the first terminal determines a demodulation reference signal pattern (DMRS pattern) on the first carrier based on the target transmission resource;

or, the first terminal selects the DMRS pattern on the first carrier; wherein the DMRS pattern satisfies at least one of:

1) The DMRS pattern does not overlap with the first timing and/or the first reception resource of the first terminal on the at least one second carrier;

2) DMRS pattern is not punctured;

3) The DMRS pattern is not within an overlapping portion of the first transmission resource on the first carrier and the first opportunity and/or the first reception resource of the first terminal on the at least one second carrier;

4) The DMRS pattern does not overlap with a second timing and/or a second transmission resource of the second terminal on at least one third carrier;

5) The DMRS pattern is not within an overlapping portion of the first transmission resource on the first carrier and the second opportunity and/or second transmission resource of the second terminal on the at least one third carrier;

6) The DMRS pattern does not overlap with third transmission resources of the second terminal and/or the third terminal on at least one fourth carrier;

7) The DMRS pattern is not within an overlapping portion of the first transmission resource on the first carrier and the third transmission resource on the at least one fourth carrier of the second terminal and/or the third terminal.

Optionally, in the case of satisfying the first event, the first terminal sends second indication information to the second terminal; the second indication information is used for indicating the second terminal to perform SL reception on one or more carriers based on second overhead, or indicating the second terminal to perform SL reception based on the pattern after rate matching or punching of the first terminal; wherein the second overhead may include at least one of:

1. Overlapping portions of a first transmission resource of the first terminal on the first carrier with a first occasion and/or a first reception resource of the first terminal on the at least one second carrier;

2. overlapping portions of a first transmission resource of the first terminal on the first carrier and a second occasion and/or a second transmission resource of the second terminal on the at least one third carrier;

3. overlapping portions of the first transmission resources of the first terminal on the first carrier with the third transmission resources of the second terminal and/or the third terminal on the at least one fourth carrier.

The second indication information may be used, for example, to indicate a first overhead in the TB size determination process and in the second-order SCI symbol number determination process;

as another example, it may be used to indicate whether the first terminal is rate matched or punctured;

for another example, related information that may be used to indicate overlapping portions;

as another example, related information that may be used to instruct the first terminal how to rate match or puncture;

as another example, related information that may be used to indicate how to de-rate match, demodulate, or receive;

The second indication information may be carried by the PSCCH or PSSCH.

Optionally, the embodiments of the present application may solve the half duplex problem according to the priority, and select to receive or transmit with a high priority.

The implementation manner of the first terminal for sending each first information or receiving each second information based on the priority of the M1 first information and the priority of the M2 second information may include:

the first terminal determines the sending priority corresponding to each first information and the receiving priority corresponding to each second information based on the priority of M1 first information and the priority of M2 second information; the receiving priority is the highest priority in each second information;

the first terminal performs any one of the following based on the transmission priority and the reception priority:

1) The first terminal sends each piece of first information under the condition that the sending priority is higher than the receiving priority;

2) Under the condition that the sending priority is equal to the receiving priority, the first terminal sends each piece of first information;

3) The first terminal receives each second message under the condition that the sending priority is lower than the receiving priority;

4) The first terminal receives each second information under the condition that the sending priority is equal to the receiving priority;

5) The first terminal sends each piece of first information under the condition that the sending priority is larger than a first threshold value;

6) Under the condition that the transmission priority is equal to a first threshold value, the first terminal transmits each piece of first information;

7) The first terminal receives each piece of second information under the condition that the sending priority is smaller than a first threshold value;

8) The first terminal receives each second message under the condition that the sending priority is equal to a first threshold value;

9) The first terminal receives each second message under the condition that the receiving priority is larger than a second threshold value;

10 In the case where the reception priority is equal to the second threshold value, the first terminal receives each second information;

11 If the reception priority is smaller than the second threshold, the first terminal transmits each first information;

12 If the reception priority is equal to the second threshold value, the first terminal transmits each first information;

13 If the priority of m1 pieces of first information is greater than the third threshold, the priority of m2 pieces of second information is greater than the fourth threshold, and m1 is greater than m2, the first terminal transmits each piece of first information;

14 If the priority of m1 pieces of first information is greater than the third threshold, the priority of m2 pieces of second information is greater than the fourth threshold, and m1 is equal to m2, the first terminal transmits each piece of first information;

15 If the priority of m1 pieces of first information is greater than the third threshold, the priority of m2 pieces of second information is greater than the fourth threshold, and m1 is less than m2, the first terminal receives each piece of second information;

16 If the priority of m1 pieces of first information is greater than the third threshold, the priority of m2 pieces of second information is greater than the fourth threshold, and m1 is equal to m2, the first terminal receives each piece of second information;

17 If there is at least one first information having a priority greater than or equal to a fifth threshold, the first terminal transmits each first information;

18 If the priority of each first information is less than or equal to the fifth threshold value, the first terminal receives each second information;

19 If there is at least one second information having a priority greater than or equal to the sixth threshold, the first terminal receives each second information;

20 If the priority of each of the second information is less than or equal to the sixth threshold value, the first terminal transmits each of the first information.

For example, the first terminal performs SL transmission on at least two carriers, including sending or receiving first information and sending or receiving second information.

1. When N is transmitted _{TX, first information} First information and receive N _{RX, second information} When the second information occurs at the same time, the first terminal may determine to send the first information according to the transmission priority of the first information and the transmission priority of the second information, or receive the second information, including any one of the following:

a. the priority of the first information is N _{TX, first information} The highest priority of the first information and the priority of the second information is N _{RX, second information} The highest priority in the second information. If the priority of sending the first information is higher than the priority of receiving the second information, selecting to send the first information; otherwise, receiving second information;

b. if the priority of the first information is greater than a first threshold, selecting to send the first information; otherwise, receiving second information;

c. if the priority of the second information is greater than a second threshold, selecting to receive the second information; otherwise, sending first information;

d. there is n _{TX, first information} The priority of the first information is greater than a third threshold, n exists _{RX, second information} The priority of the second information is greater than the fourth threshold. If n _{TX, firstInformation processing system} Greater than or equal to n _{RX, second information} Selecting to send first information; otherwise, receiving the second information.

2. When receiving N _{RX, first information} First information and transmission N _{TX, second information} When the second information is sent at the same time, the first terminal may determine to receive the first information according to the transmission priority of the first information and the transmission priority of the second information, or send the second information, including any one of the following:

a. the priority of receiving the first information is N _{RX, first information} The highest priority of the first information, and the priority of the second information is N _{TX, second information} The highest priority in the second information. Selecting to receive the first information if the priority of receiving the first information is higher than the priority of sending the second information; otherwise, sending second information;

b. if the priority of the first information is greater than a fifth threshold, selecting to receive the first information; otherwise, sending second information;

c. if the priority of the second information is greater than a sixth threshold, selecting to send the second information; otherwise, receiving first information;

d. there is n _{RX, first information} The priority of the first information is greater than the seventh threshold, n exists _{TX, second information} The priority of the second information is greater than the eighth threshold. If n _{RX, first information} Greater than or equal to n _{TX, second information} Selecting to receive the first information; otherwise, the second information is sent.

The first information may be carried on the PSSCH and the second information may be carried on the PSFCH.

Optionally, after the first terminal performs rate matching or puncturing on the first transmission resource on the first carrier to obtain the target transmission resource, the method may further include:

the first terminal calculates the number N 'of resource elements RE available for PSSCH in one physical resource block PRB based on the target transmission resource by adopting the formula (1)' _RE ：

Wherein,characterizing a third overhead>Characterizing the number of sub-carriers within one PRB, < >>Characterizing the number of symbols available for side-row in a time slot, for example>Symbol number representing PSFCH occupancy, < ->Representing the RE number occupied by the phase tracking reference signal PT-RS and the channel state information reference signal CSI-RS,/and the like>Representing the average number of DMRS resource elements RE in one time slot;

the third overhead may include at least one of:

1) The first sending resource of the first terminal on the first carrier wave and the first opportunity and/or the first receiving resource of the first terminal on at least one second carrier wave have the overlapped symbol number;

2) The first sending resource of the first terminal on the first carrier wave and the second sending resource of the second terminal on at least one third carrier wave have overlapped symbol numbers;

3) The first transmission resource of the first terminal on the first carrier and the third transmission resource of the second terminal and/or the third terminal on the at least one fourth carrier have overlapping symbol numbers.

In the embodiment of the present application, when determining the transport block set (Transport Block Set, TBS) on the carrier, the first terminal or the second terminal may calculate the TB size according to the resources after puncturing, and subtract the overhead of the overlapping portion.

In particular, the third overhead may be subtracted from the scheduling symbols when determining available Resource Elements (REs), i.e. from the symbols in the formula when determining available REs in one physical Resource block (Physical Resource Block, PRB)It should be noted that the number of available REs in one slot or the number of REs occupied by PSSCH N can be calculated according to equation (5) _RE ：

Wherein n is _PRB For the number of PRBs occupied by the PSSCH,for the number of REs occupied by the first order SCI, the REs occupied by the DMRS, which may include PSCCH and PSCCH,>for the number of RE occupied by the second SCI, N _R ′ _E The specific calculation formula is shown in formula (1) for the number of REs available for PSSCH in one PRB.

In one embodiment, in the above formula (1):

representing the number of subcarriers in one PRB;

Representing the number of symbols available for sidelobes in a slot, excluding the last GP symbol and the first symbol for AGC;

or 3, representing the number of symbols occupied by the PSFCH, determined according to the PSFCH overhead indication (overhead indication) field indication in the first-order SCI;

representing Overhead given by higher layer configuration side link Reference Signal Overhead (sl-X-Overhead) for representing the number of REs occupied by Phase-tracking Reference Signal (PT-RS) and channel state information (CSI-RS) Reference signals;

the DMRS time domain pattern (sl-PSSCH-DMRS-time pattern) representing the average DMRS RE number in one slot is determined by Table 8.1.3.2-1 according to the DMRS time domain pattern of the side link PSSCH configured by the higher layer.

the first terminal calculates the RE number Q 'occupied by the second step side link control information SCI based on the target transmission resource by adopting the formula (2)' _SCI2 ：

Wherein,and l does not include the fourth overhead +.>O _SCI2 Bit number, L, characterizing second-level SCI information _SCI2 Cyclic redundancy check (Cyc) characterizing second-order SCI lic Redundancy Check, CRC) length, < >>Code rate offset characterizing second order SCI, +.>Characterizing the modulation order of the second order SCI, R characterizing the code rate corresponding to the modulation and coding strategy (Modulation and Coding Scheme, MCS) in the first order SCI indicating the MCS index indicated in the domain, α characterizing the maximum spectral efficiency of the second order SCI configured for radio resource control (Radio Resource Control, RRC), and->Characterizing the number of REs available for mapping the second order SCI on the first orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbol,/I>Representing the number of symbols occupied by PSFCH, and gamma represents the number of residual REs of PRB where the last second-order SCI modulation symbol is located;

the fourth pin includes at least one of:

1) The first sending resource of the first terminal on the first carrier wave and the first opportunity and/or the first receiving resource of the first terminal on at least one second carrier wave are provided with overlapped symbols;

2) The first transmission resource of the first terminal on the first carrier wave and the second transmission resource of the second terminal on at least one third carrier wave have overlapped symbols;

3) The first transmission resource of the first terminal on the first carrier has overlapping symbols with the third transmission resource of the second terminal and/or the third terminal on the at least one fourth carrier.

In one embodiment, in formula (2) above:

O _SCI2 the number of information bits representing the second-level SCI may be determined by the format of the second-level SCI;

L _SCI2 a CRC length representing the second order SCI, e.g., 24 bits;

the code rate offset representing the second order SCI may be indicated by the first order SCI;

representing the modulation order of the second order SCI;

r represents the code rate corresponding to the MCS index indicated in the MCS indication domain in the first-order SCI;

represents the number of REs available for mapping the second order SCI on the first OFDM symbol,/I>Indicating the number of REs within the transmission bandwidth of PSSCH, < >>Indicating the number of REs for PSCCH on the first OFDM symbol.

But->Wherein (1)>/>Representing OFDM symbols which can be used for sidelobes in the current time slot except the first AGC symbol and the last GP symbol;

or 3, representing the number of symbols occupied by the PSFCH, which can be determined according to the PSFCH overhead indication field indication in the first-order SCI;

the value of gamma can be 0 to 11, which represents the number of the remained REs of the PRB where the last second-order SCI modulation symbol is located, and the parameter is used for ensuring that the resources occupied by the second-order SCI are an integer number of PRBs;

α represents the maximum spectral efficiency of the RRC configured second order SCI.

The SL data transmission method provided in the embodiment of the present application may be applied to the second terminal, and in the embodiment of the present application, the second terminal is taken as a receiving end for illustration, but the second terminal is not limited to be only used for receiving SL data.

Fig. 4 is a second flowchart of a SL data transmission method according to an embodiment of the present disclosure, as shown in fig. 4, the method includes step 401; wherein:

step 401, under the condition that the second event is satisfied, the second terminal performs rate-de-matching or demodulation or reception on the third receiving resource on the first carrier wave to obtain a target receiving resource; the second terminal receives N1 pieces of third information based on the target receiving resource;

or the second terminal receives the third information or transmits the fourth information based on the priority of the N1 third information and the priority of the N2 fourth information; the third receiving resource is used for the second terminal to receive each third information.

Wherein the second event comprises at least one of:

the third receiving resource overlaps with a fourth opportunity and/or a fourth transmitting resource of the second terminal on at least one sixth carrier; the fourth transmission resource is used for the second terminal to transmit fourth information;

the second terminal receives a third message from the first terminal, wherein the third message is used for indicating that a fifth sending resource of the first terminal on the first carrier is overlapped with a fifth opportunity and/or a fourth receiving resource of the first terminal on at least one seventh carrier; the fifth sending resource is used for the first terminal to send each third message to the second terminal;

The fifth sending resource of the first terminal on the first carrier is overlapped with the sixth time and/or the fifth receiving resource of the first terminal and/or the fourth terminal on at least one eighth carrier;

Specifically, in the embodiment of the present application, in the process of performing SL reception on at least one carrier, under the condition that the second event is satisfied, specifically, when there is an overlap between the third receiving resource on the first carrier and the opportunity or the transmitting resource on the other carrier, or when there is an overlap between the transmitting resource corresponding to the third receiving resource, that is, the fifth transmitting resource and the opportunity or the receiving resource on the other carrier, the following steps are executed to solve the transmit-receive conflict:

the second terminal performs rate-resolved matching or demodulation or reception on the third receiving resources on the first carrier wave to obtain target receiving resources without receiving-transmitting conflict, and then the second terminal receives N1 pieces of third information based on the target receiving resources without receiving-transmitting conflict, so that the receiving-transmitting conflict problem of different carrier waves can be effectively solved.

Or, the second terminal may further receive each third information or send each fourth information based on the priority of the N1 third information and the priority of the N2 fourth information, so as to avoid the transmission and reception conflict generated by simultaneously transmitting and receiving the information.

The third information received by the second terminal may be first information transmitted by the first terminal based on the target transmission resource, and the fourth information transmitted by the second terminal may be second information received by the first terminal.

Specifically, the second event may include any one of the following:

1) The third receiving resource overlaps with a fourth opportunity and/or a fourth transmitting resource of the second terminal on at least one sixth carrier; the second terminal is used for receiving the second information, wherein the second transmission resource is used for transmitting the second information;

the third reception resource may be a resource for reception.

The fourth occasion may be understood as a resource reserved on at least one sixth carrier for transmitting or receiving the PSFCH.

The fourth transmission resource may be a resource for transmission.

2) The second terminal receives a third message from the first terminal; the third message is used for indicating that a fifth sending resource of the first terminal on the first carrier is overlapped with a fifth opportunity and/or a fourth receiving resource of the first terminal on at least one seventh carrier; the fifth sending resource is used for the first terminal to send each third message to the second terminal;

Specifically, the first terminal may send a third message to the receiving end corresponding to the fifth sending resource, that is, to the second terminal, so as to instruct the second terminal to perform rate-de-matching or demodulation or reception on the third receiving resource corresponding to the fifth sending resource, where the fifth sending resource on the first carrier overlaps with the fifth occasion and/or the fourth receiving resource on the at least one seventh carrier, that is, where the sending resource of the first terminal overlaps with the occasion and/or the sending resource on the other carrier;

after receiving the third message, the second terminal performs rate de-matching or demodulation or reception on the third receiving resource to avoid the transmission and reception conflict of the fifth transmitting resource.

In addition, if the second terminal is the first terminal at the transmitting end corresponding to the fourth receiving resource on the at least one seventh carrier, the first terminal may inform the second terminal of the third message without higher layer notification or signaling.

The third message is used to indicate that the first terminal has a transmission/reception conflict in one or more positions, symbols or occasions on one or more carriers, is unavailable for transmission or is available only for reception, or is used to indicate that the second terminal is unavailable for reception in one or more positions, symbols or occasions on one or more carriers.

The fifth transmission resource may be a resource for transmission.

The fourth reception resource may be a resource for reception.

The fifth occasion may be a PSFCH occasion.

3) The fifth sending resource of the first terminal on the first carrier is overlapped with the sixth time and/or the fifth receiving resource of the first terminal and/or the fourth terminal on at least one eighth carrier;

specifically, when the fifth transmission resource of the first terminal on the first carrier overlaps with the sixth time and/or the fifth receiving resource of the first terminal and/or the fourth terminal on at least one eighth carrier, the receiving end corresponding to the fifth transmission resource may be notified through a higher layer notification or through a transmission signaling, that is, the second terminal may be notified that the fifth transmission resource has a transmission-reception conflict, or the second terminal may be notified that one or more positions, symbols or time on one or more carriers are unavailable for receiving; after receiving the notification, the second terminal may perform rate-matching or demodulation or reception on the third receiving resource, so as to avoid a transmission/reception conflict with the fifth transmitting resource.

In addition, since the transmission resource corresponding to the second reception resource is the fifth transmission resource of the first terminal, the second terminal may determine whether there is an overlap between the fifth transmission resource corresponding to the second reception resource and the fifth reception resource by detecting the second reception resource, and may further determine that one or more positions, symbols, or opportunities of the second terminal on one or more carriers are unavailable for reception according to the portion where the fifth transmission resource and the fifth reception resource overlap.

The sixth occasion may be a PSFCH occasion.

The fifth reception resource may be a resource for reception.

4) The second terminal receives second indication information from the first terminal; the second indication information is used for indicating the second terminal to perform SL reception on one or more carriers based on second overhead, or indicating the second terminal to perform SL reception based on the pattern after rate matching or puncturing of the first terminal.

The second indication information may be used, for example, to indicate a first overhead in a transport block size (TB size) determination process and a second-order SCI symbol number determination process;

The second indication information may be carried by the PSCCH or PSSCH.

The at least two carriers referred to above may satisfy at least one of:

1. A carrier of intra band;

2. SCS of the carrier is the same or different;

3. corresponding TX are identical or synchronous;

4. the corresponding RF is the same or different;

5. the corresponding bands are different.

In the SL data transmission method provided in the embodiment of the present invention, in the case where the second event is satisfied, for example, when there is an overlap between the third receiving resource of the second terminal on the first carrier and the opportunity or the transmitting resource on the other carrier, or when there is an overlap between the fifth transmitting resource and the opportunity or the receiving resource on the other carrier, the second terminal performs rate-dematching or demodulation or receiving on the third receiving resource, so as to obtain a target receiving resource without a receiving-transmitting conflict, and receives N1 pieces of third information based on the target receiving resource; or the second terminal receives the third information or transmits the fourth information based on the priority of the N1 third information to be received and the priority of the N2 fourth information to be transmitted, so that the problem of receiving and transmitting conflict of different carriers during carrier aggregation is solved, and the SL transmission performance is further improved.

Optionally, the third receiving resource may include at least one of:

1) Reserved resources for reception;

2) A TB to be received;

3) PSSCH to be received;

4) PSCCH to be received;

5) PSSCH DMRS to be received;

6) PSCCH DMRS to be received.

Optionally, the fourth, fifth and/or sixth timing may include at least one of:

1. PSFCH timing;

2、PSFCH；

3、PSFCH AGC；

4、PSFCH GP；

5. GP symbol;

6. AGC symbols;

7. TX switching period.

The PSFCH timing may include PSFCH, PSFCH AGC, and PSFCH GP.

Optionally, the fourth transmission resource may include at least one of the following:

2) A TB to be transmitted;

3) PSSCH to be transmitted;

4) PSCCH to be transmitted;

5) PSSCH DMRS to be transmitted;

6) PSCCH DMRS to be transmitted;

7) PSFCH to be sent;

8) PSFCH AGC to be sent;

9) The PSFCH GP to be transmitted.

Optionally, the fourth receiving resource and/or the fifth receiving resource may include at least one of the following:

1. reserved resources for reception;

2. a TB to be received;

3. PSSCH to be received;

4. PSCCH to be received;

5. PSSCH DMRS to be received;

6. PSCCH DMRS to be received;

7. PSFCH to be received;

8. PSFCH AGC to be received;

9. The PSFCH GP to be received.

Optionally, the fifth transmission resource may include at least one of the following:

2) A TB to be transmitted;

3) PSSCH to be transmitted;

4) PSCCH to be transmitted;

5) PSSCH DMRS to be transmitted;

6) PSCCH DMRS to be transmitted.

Optionally, the second overhead may include at least one of:

Optionally, the performing, by the second terminal, rate de-matching on the third receiving resource on the first carrier may include:

the second terminal, when determining the resource mapping of the third reception resource on the first carrier, satisfies at least one of:

1) The third reception resource is rate-de-matched at a position or symbol where there is no overlap with the fourth occasion and/or fourth transmission resource on the at least one sixth carrier;

2) The third receive resource is not rate-matched in a position or symbol overlapping with a fourth occasion and/or fourth transmit resource on the at least one sixth carrier;

3) The third receive resource is de-rate matched at a location or symbol where there is no overlap with the fifth occasion and/or the fourth receive resource on the at least one seventh carrier;

4) The third receive resource is not rate-matched in a position or symbol overlapping with the fifth occasion and/or the fourth receive resource on the at least one seventh carrier;

5) The third receive resource is de-rate matched at a location or symbol where there is no overlap with the sixth occasion and/or the fifth receive resource on the at least one eighth carrier;

6) The third receive resource is not rate-matched in a position or symbol that overlaps with the sixth occasion and/or the fifth receive resource on the at least one eighth carrier.

Optionally, an implementation manner of demodulating or receiving, by the second terminal, the third receiving resource on the first carrier may include:

when demodulating or receiving the third receiving resource on the first carrier, the second terminal meets at least one of the following operations:

1. Demodulation or reception of the third reception resource at a position or symbol where there is no overlap with the fourth occasion and/or fourth transmission resource on the at least one sixth carrier;

2. the third reception resource is not demodulated or received at a position or symbol that overlaps with the fourth occasion and/or fourth transmission resource on the at least one sixth carrier;

3. demodulation or reception of the third reception resource at a position or symbol where there is no overlap with the fifth occasion and/or the fourth reception resource on the at least one seventh carrier;

4. the third reception resource is not demodulated or received at a position or symbol that overlaps with the fifth occasion and/or the fourth reception resource on the at least one seventh carrier;

5. demodulation or reception of the third reception resource at a position or symbol where there is no overlap with the sixth occasion and/or the fifth reception resource on the at least one eighth carrier;

6. the third receive resource is not demodulated or received at a position or symbol that overlaps with the sixth occasion and/or the fifth receive resource on the at least one eighth carrier.

Optionally, the implementation manner of performing rate de-matching, demodulation, or reception on the third receiving resource on the first carrier by the second terminal may include:

the second terminal performs rate de-matching or demodulation or reception on a third receiving resource on the first carrier based on the target pattern;

Wherein the target pattern comprises at least one of the following:

1) Rate matching or puncturing pattern of the first terminal on one or more carriers based on the second indication information;

2) Pattern determined based on the position of the third receiving resource and a fourth opportunity of the second terminal on at least one sixth carrier and/or whether the fourth transmitting resource overlaps or not;

3) Pattern determined based on the position of the third reception resource and a fifth occasion of the first terminal on at least one seventh carrier and/or whether the fourth reception resource overlaps or overlaps;

4) And a pattern determined based on the position of the third receiving resource and a sixth opportunity of the first terminal and/or the fourth terminal on at least one eighth carrier and/or whether the fifth receiving resource overlaps or not.

Optionally, in the case that the second event is satisfied, the second terminal sends first indication information to the first terminal; the first indication information is used for indicating the first terminal to perform SL transmission on one or more carriers based on first overhead or indicating related information of rate matching or punching of the first terminal;

wherein the first overhead comprises at least one of:

The first indication information may be used, for example, to indicate a first overhead in the TB size determination process and in the second-order SCI symbol number determination process;

The first indication information may be carried by a PSCCH or a PSSCH.

Optionally, the implementation manner of receiving each third information or sending each fourth information by the second terminal based on the priority of the N1 third information and the priority of the N2 fourth information includes:

The second terminal determines the receiving priority corresponding to each third information and the sending priority corresponding to each fourth information based on the priority of each third information and the priority of N2 fourth information; the receiving priority is the highest priority in each third information, and the sending priority is the highest priority in each fourth information;

the second terminal performs any one of the following based on the reception priority and the transmission priority:

1) The second terminal receives each third information under the condition that the receiving priority is higher than the sending priority;

2) The second terminal receives each third information under the condition that the receiving priority is equal to the sending priority;

3) The second terminal transmits each fourth information under the condition that the receiving priority is lower than the transmitting priority;

4) The second terminal transmits each fourth information under the condition that the receiving priority is equal to the transmitting priority;

5) The second terminal receives each third information under the condition that the receiving priority is larger than a seventh threshold value;

6) The second terminal receives each third information under the condition that the receiving priority is equal to a seventh threshold value;

7) The second terminal sends fourth information under the condition that the receiving priority is smaller than a seventh threshold value;

8) The second terminal sends each fourth message under the condition that the receiving priority is equal to a seventh threshold value;

9) The second terminal transmits each fourth information under the condition that the transmission priority is larger than an eighth threshold value;

10 If the transmission priority is equal to the eighth threshold, the second terminal transmits each fourth information;

11 If the transmission priority is smaller than the eighth threshold, the second terminal receives each third information;

12 If the transmission priority is equal to the eighth threshold, the second terminal receives each third information;

13 If the priority of the n1 pieces of third information is greater than the ninth threshold, the priority of the n2 pieces of fourth information is greater than the tenth threshold, and n1 is greater than n2, the second terminal receives each piece of third information;

14 If the priority of the n1 pieces of third information is greater than the ninth threshold, the priority of the n2 pieces of fourth information is greater than the tenth threshold, and n1 is equal to n2, the second terminal receives each piece of third information;

15 If the priority of the n1 pieces of third information is greater than the ninth threshold, the priority of the n2 pieces of fourth information is greater than the tenth threshold, and n1 is less than n2, the second terminal transmits each fourth information;

16 If the priority of the n1 pieces of third information is greater than the ninth threshold, the priority of the n2 pieces of fourth information is greater than the tenth threshold, and n1 is equal to n2, the second terminal transmits each fourth information;

17 If there is at least one third information having a priority greater than or equal to the eleventh threshold, the second terminal receives each third information;

18 If the priority of each third information is less than or equal to the eleventh threshold, the second terminal transmits each fourth information;

19 If there is at least one fourth information having a priority greater than or equal to the twelfth threshold, the second terminal transmits each fourth information;

20 The second terminal receives each third information in the case where the priorities of the fourth information are all less than or equal to the twelfth threshold.

Optionally, after the second terminal performs rate-de-matching or demodulation or receiving on the third receiving resource on the first carrier to obtain the target receiving resource, the second terminal calculates the number N 'of resource elements RE available for PSSCH in one physical resource block PRB based on the target receiving resource by using formula (3)' _RE ：

Wherein,characterizing a fifth overhead, < >>Characterizing the number of sub-carriers within one PRB, < >>Characterizing the number of symbols available for side-row in a time slot, for example>Symbol number representing PSFCH occupancy, < ->Characterization of the number of REs occupied by PT-RS and CSI-RS,>representing the average number of DMRS REs in a time slot;

the fifth overhead may include at least one of:

1) The third receiving resource of the second terminal on the first carrier wave and the fourth opportunity and/or the fourth sending resource of the second terminal on at least one sixth carrier wave have the overlapped symbol number;

2) The third receiving resource of the second terminal on the first carrier wave and the fifth opportunity and/or the fourth receiving resource of the first terminal on at least one seventh carrier wave have the overlapped symbol number;

3) The third receiving resource of the second terminal on the first carrier has an overlapping symbol number with the sixth opportunity and/or the fifth receiving resource of the first terminal and/or the fourth terminal on at least one eighth carrier.

In one embodiment, in the above formula (3):

representing the number of subcarriers in one PRB;

representing oneThe number of symbols available for sidelobes in the slot, excluding the last GP symbol and the first symbol for AGC; />

Or 3, representing the number of symbols occupied by PSFCH, determined according to PSFCH overhead indication domain indication in first-order SCI;

the Overhead given by the high-layer configuration sl-X-overheads is represented and used for representing the RE number occupied by PT-RS and CSI-RS;

the average DMRS RE number in a time slot is represented and is determined according to the sl-PSSCH-DMRS-TimePattern configured by a higher layer.

Optionally, after the second terminal performs rate-de-matching, demodulation, or reception on the third reception resource on the first carrier to obtain the target reception resource, the second terminal calculates, based on the target reception resource, the number Q 'of REs occupied by the second sidelink control information SCI using formula (4)' _SCI2 ：

Wherein,and l does not include the sixth overhead->O _SCI2 Bit number, L, characterizing second-level SCI information _SCI2 CRC length characterizing second order SCI, +.>The code rate offset of the second order SCI is characterized,representing the modulation order of the second-order SCI, R representing the code rate corresponding to the MCS index indicated in the MCS indication domain in the first-order SCI, alpha representing the maximum spectral efficiency of the second-order SCI configured by the radio resource control RRC,/->Characterizing the number of REs available for mapping the second order SCI on the first OFDM symbol,/I>Representing the number of symbols occupied by PSFCH, and gamma represents the number of residual REs of PRB where the last second-order SCI modulation symbol is located;

the sixth overhead may include at least one of:

1) The third receiving resource of the second terminal on the first carrier wave and the fourth opportunity and/or the fourth sending resource of the second terminal on at least one sixth carrier wave have overlapped symbols;

2) The third receiving resource of the second terminal on the first carrier wave and the fifth opportunity and/or the fourth receiving resource of the first terminal on at least one seventh carrier wave are provided with overlapped symbols;

3) The third receiving resource of the second terminal on the first carrier has overlapping symbols with the sixth opportunity and/or the fifth receiving resource of the first terminal and/or the fourth terminal on the at least one eighth carrier.

In one embodiment, in formula (4) above:

L _SCI2 a CRC length representing the second order SCI, e.g., 24 bits;

representing the modulation order of the second order SCI;

represents the number of REs available for mapping the second order SCI on the first OFDM symbol,/I>Indicating the number of REs within the transmission bandwidth of PSSCH, < >>Indicating the number of REs for PSCCH on the first OFDM symbol. />

But->Wherein (1)> Representing OFDM symbols which can be used for sidelobes in the current time slot except the first AGC symbol and the last GP symbol;

or 3, representing the number of symbols occupied by PSFCH, which can be determined according to PSFCH overhead indication field indication in first-order SCISetting;

The following illustrates a SL data transmission method provided in an embodiment of the present application:

1. fig. 5 is a second schematic diagram of resource distribution on different CCs provided in this embodiment of the present application, as shown in fig. 5, the first terminal configures CC1 and CC2, where the slot format (slot format) lengths of CC1 and CC2 are both 14 symbols (symbols), no PSFCH is configured on CC1, and PSFCH is configured on CC2, and it is seen that there is an overlap between the PSSCH to be transmitted on CC1 and the PSFCH timing (occalasion) on CC2, including 2 symbols of PSFCH (symbol #11, symbol # 12), and the GP symbol of the PSFCH of CC2 is also the GP symbol of the PSSCH of CC1, and if the symbols are not transmitted, then the first terminal performs rate matching on the PSSCH when determining the PSSCH resource mapping to be transmitted on CC1, that is, the PSSCH is not mapped on symbol #11, symbol #12.

In calculating the TB size, the number of available REs in one slot or the number of REs occupied by PSSCH N is calculated by equation (5) _RE ：

The number of REs available for the PSSCH in one PRB is calculated based on formula (1):

above-mentioned

The fourth overhead is subtracted from the scheduling symbol in determining the RE occupied by the second order SCI, that is, in determining the OFDM symbol available in one slot, calculated based on equation (2):

Above-mentionedWherein l does not include the fourth overhead +.>I.e. l=0, 1,2 …,9.

2. Fig. 6 is a third schematic diagram of resource distribution on different CCs provided in this embodiment of the present application, as shown in fig. 6, the first terminal configures CC1 and CC2, where slot lengths of CC1 and CC2 are 14 symbols, PSFCH is not configured on CC1, PSFCH is configured on CC2, and it is seen that there is an overlap between a PSSCH to be transmitted on CC1 and a PSFCH to be received on CC2, including 2 symbols (symbol #11, symbol # 12) of the PSFCH, and GP symbols of the PSFCH of CC2 are also GP symbols of the PSSCH of CC1, and the symbols are not transmitted, and when determining that the PSSCH resource to be transmitted on CC1 is mapped, the first terminal performs rate matching on the PSSCH, that is, the PSSCH is not mapped on symbol #11, symbol #12.

3. Fig. 7 is a fourth schematic diagram of resource distribution on different CCs provided in this embodiment of the present application, as shown in fig. 7, the second terminal configures CC1 and CC2, where slot format lengths of CC1 and CC2 are both 14 symbols, no PSFCH is configured on CC1, and PSFCH is configured on CC2, where it is seen that there is an overlapping portion between a PSSCH to be received on CC1 (a transmitting end of the PSSCH to be received is a first terminal) and a PSFCH to be transmitted on CC2, including 2 symbols of the PSFCH (symbol #11, symbol # 12), a GP symbol of the PSFCH of CC2 is also a GP symbol of the PSSCH of CC1, and the symbol is not transmitted, and then the second terminal informs the first terminal that the first terminal is a first message by a higher layer notification or signaling, indicating that symbol #11 and symbol #12 of the first terminal on CC1 are not available for transmission, and when determining that the PSSCH resource mapping to be transmitted on CC1 is performed, the first terminal performs rate matching, that is, symbol #11 and symbol #12 is not mapped.

Or, the second terminal configures CC1 and CC2, where slot lengths of CC1 and CC2 are 14 symbols, no PSFCH is configured on CC1, no PSFCH is configured on CC2, there is an overlapping portion between a PSSCH to be received on CC1 (a transmitting end of the PSSCH to be received is a first terminal) and a PSFCH to be transmitted on CC2 (a receiving end of the PSFCH to be transmitted is a first terminal), the overlapping portion includes 2 symbols of PSFCH (symbol #11, symbol # 12), a GP symbol of the PSFCH of CC2 is also a GP symbol of the PSSCH of CC1, and the symbol is not transmitted, and when determining that a PSSCH resource to be transmitted on CC1 is mapped, the first terminal performs rate matching on the PSSCH, that is, the PSSCH is not mapped to symbol #11, and symbol #12. It is understood that the first terminal may determine that there is a collision according to the mapping between the PSSCH and the PSFCH, and the notification of the second terminal is not necessarily required.

4. Fig. 8 is a fifth schematic diagram of resource distribution on different CCs provided in this embodiment of the present application, as shown in fig. 8, when the second terminal detects that there is an overlapping portion (symbol #6 and symbol # 7) between a PSSCH to be received by CC1 (the transmitting end of the PSSCH to be received is the first terminal) and a PSSCH to be transmitted by another terminal on CC2, the first terminal performs rate matching on the PSSCH when determining that the PSSCH resource to be transmitted on CC1 is mapped, that is, the PSSCH does not map symbol #6 and symbol #7.

Or, the second terminal detects that the overlapping portion (symbol #6 and symbol # 7) exists between the PSSCH to be received by the CC1 (the transmitting end of the PSSCH to be received is the first terminal) and the PSSCH to be transmitted by other terminals on the CC2 (the receiving end of the PSSCH to be transmitted is the first terminal), and when determining that the PSSCH resource to be transmitted on the CC1 is mapped, the first terminal performs rate matching on the PSSCH, that is, the PSSCH does not map the symbol #6 and the symbol #7.

5. Fig. 9 is a sixth schematic diagram of resource distribution on different CCs provided in this embodiment of the present application, as shown in fig. 9, the second terminal configures CC1 and CC2, where slot lengths of CC1 and CC2 are 14 symbols, PSFCH is not configured on CC1, PSFCH is configured on CC2, there is overlap between PSSCH to be received on CC1 and PSFCH occasin on CC21, including 2 symbols (symbol #11, symbol # 12) of PSFCH, and GP symbols of PSFCH of CC2 are also GP symbols of PSSCH of CC1, and the symbols are not transmitted, and when SL reception is performed on CC1 by the second terminal, rate de-matching is not performed on the PSSCH to be received on symbol #11, symbol # 12.

The number of REs available for the PSSCH in one PRB is calculated based on formula (6):

above-mentioned

The sixth overhead is subtracted from the scheduling symbol in determining the RE occupied by the second order SCI, that is, in determining the OFDM symbol available in one slot, calculated based on equation (2):

/>

above-mentionedWherein l does not include the sixth overhead->I.e. l=0, 1,2 …,9.

6. Fig. 10 is a seventh schematic diagram of resource distribution on different CCs provided in this embodiment of the present application, as shown in fig. 10, the second terminal configures CC1 and CC2, where slot lengths of CC1 and CC2 are 14 symbols, PSFCH is not configured on CC1, PSFCH is configured on CC2, there is an overlap between a PSSCH to be received on CC1 and a PSFCH to be transmitted on CC2, including 2 symbols (symbol #11, symbol # 12) of the PSFCH, and GP symbols of the PSFCH of CC2 are also GP symbols of the PSSCH of CC1, and the symbols are not transmitted, so when SL reception is performed on CC1 by the second terminal, the PSSCH to be received is not rate-resolved in symbol #11, symbol # 12.

7. Fig. 11 is an eighth view of resource distribution on different CCs provided in this embodiment of the present application, as shown in fig. 11, the first terminal configures CC1 and CC2, where slot format lengths of CC1 and CC2 are both 14 symbols, PSFCH is not configured on CC1, PSFCH is configured on CC2, there is an overlapping portion between a PSSCH to be transmitted on CC1 (a receiving end of the PSSCH to be transmitted is a second terminal) and a PSFCH to be received on CC2, including 2 symbols of PSFCH (symbol #11, symbol # 12), a GP symbol of the PSFCH of CC21 is also a GP symbol of the PSSCH of CC12, and the symbol is not transmitted, and then the first terminal informs the second terminal of a third message by a higher layer notification or signaling, indicating that symbol #11 and symbol #12 of the second terminal on CC1 are unavailable for receiving, and does not perform rate de-matching on the PSSCH to be received when the second terminal performs SL reception on CC 1.

Or, the first terminal configures CC1 and CC2, where slot lengths of CC1 and CC2 are 14 symbols, no PSFCH is configured on CC1, no PSFCH is configured on CC2, there is an overlapping portion between a PSSCH to be transmitted on CC1 (a receiving end of the PSSCH to be transmitted is a second terminal) and a PSFCH to be received on CC2 (a transmitting end of the PSSCH to be received is a first terminal), the overlapping portion includes 2 symbols of PSFCH (symbol #11, symbol # 12), a GP symbol of the PSFCH of CC2 is also a GP symbol of the PSSCH of CC1, and the symbol is not transmitted, so when the second terminal performs SL reception on CC1, no rate-de-matching is performed on the symbol #11, symbol #12 to be received.

8. Fig. 12 is a ninth schematic view of resource distribution on different CCs provided in this embodiment of the present application, as shown in fig. 12, when a first terminal detects that an overlapping portion (symbol #6 and symbol # 7) exists between a PSSCH to be transmitted of CC1 (a receiving end of the PSSCH to be transmitted is a second terminal) and a PSSCH to be received of another terminal on CC2, the second terminal does not perform rate de-matching on the symbol #11 and symbol #12 to be received when performing SL reception on CC 1.

Or, when the first terminal detects that there is an overlapping portion (symbol #6 and symbol # 7) between the PSSCH to be transmitted (the receiving end of the PSSCH to be transmitted is the second terminal) of the CC1 and the PSSCH to be received (the transmitting end of the PSSCH to be received is the second terminal) of the other terminal on the CC2, the second terminal does not perform rate de-matching on the PSSCH to be received at symbol #11 and symbol #12 when the second terminal performs SL reception on the CC 1.

According to the SL data transmission method provided by the embodiment of the application, the execution main body can be an SL data transmission device. In this embodiment, taking an example that the SL data transmission device performs the SL data transmission method, the SL data transmission device provided in the embodiment of the present application is described.

Fig. 13 is one of schematic structural diagrams of an SL data transmission device according to an embodiment of the present application, and as shown in fig. 13, the SL data transmission device 1300 is applied to a first terminal, and includes:

the transmitting module 1301, in case the first event is satisfied,

performing rate matching or punching on a first transmission resource on a first carrier wave to obtain a target transmission resource; m1 pieces of first information are sent based on the target sending resource;

wherein the first event includes at least one of:

In the SL data transmission apparatus provided in the embodiment of the present application, under a situation that there is a problem of a transmission/reception collision on different carriers, rate matching or puncturing is performed on a first transmission resource, so as to obtain a target transmission resource, and M1 pieces of first information are transmitted based on the target transmission resource; or based on the priority of M1 pieces of first information to be sent and the priority of M2 pieces of second information to be received, determining to send the first information or receive the second information, thereby solving the problem of receiving and transmitting conflict on different carriers in a carrier aggregation scene and improving SL transmission performance.

Optionally, the sending module 1301 is specifically configured to determine a resource mapping of a first sending resource on the first carrier;

upon determining a resource mapping of a first transmission resource on the first carrier, at least one of:

a position or symbol mapping of the first transmission resource in which there is no overlap with the first occasion and/or the first reception resource on the at least one second carrier;

the first transmission resource is not in a position or symbol mapping overlapping with a first occasion and/or a first reception resource on at least one second carrier;

a position or symbol mapping of the first transmission resource in which there is no overlap with the second occasion and/or the second transmission resource on the at least one third carrier;

the first transmission resource is not in a position or symbol mapping overlapping with a second occasion and/or a second transmission resource on at least one third carrier;

the first transmission resource is mapped at a position or symbol which is not overlapped with a third transmission resource on at least one fourth carrier;

the first transmission resource is not mapped in a position or symbol overlapping with a third transmission resource on at least one fourth carrier.

Optionally, the sending module 1301 is specifically configured to punch a first sending resource on the first carrier;

When the first transmission resource on the first carrier is perforated, at least one of the following is satisfied:

the first transmission resource is transmitted at a position or symbol which is not overlapped with the first opportunity and/or the first receiving resource on at least one second carrier;

the first transmission resource is not transmitted at a position or symbol overlapping with a first opportunity and/or a first reception resource on at least one second carrier;

the first transmission resource is transmitted at a position or symbol which is not overlapped with the second opportunity and/or the second transmission resource on at least one third carrier;

the first transmission resource is not transmitted at a position or symbol overlapping with a second opportunity and/or a second transmission resource on at least one third carrier;

the first transmission resource is transmitted at a position or symbol which is not overlapped with the third transmission resource on at least one fourth carrier;

the first transmission resource is not transmitted in a position or symbol that overlaps with a third transmission resource on at least one fourth carrier.

Optionally, the transmitting module 1301 is further configured to determine a demodulation reference signal DMRS pattern on the first carrier based on the target transmission resource;

Or, the sending module 1301 is further configured to select a DMRS pattern on the first carrier; the DMRS pattern satisfies at least one of:

the DMRS pattern does not overlap with a first occasion and/or a first reception resource of the first terminal on at least one second carrier;

the DMRS pattern is not punctured;

the DMRS pattern is not within an overlapping portion of the first transmission resource on the first carrier and a first occasion and/or first reception resource of the first terminal on at least one second carrier;

the DMRS pattern does not overlap with a second occasion and/or a second transmission resource of the second terminal on at least one third carrier;

the DMRS pattern is not within an overlapping portion of the first transmission resource on the first carrier and a second occasion and/or second transmission resource of the second terminal on at least one third carrier;

the DMRS pattern does not overlap with third transmission resources of the second terminal and/or the third terminal on at least one fourth carrier;

the DMRS pattern is not within an overlapping portion of the first transmission resource on the first carrier and a third transmission resource of the second terminal and/or a third terminal on at least one fourth carrier.

Optionally, the sending module 1301 is further configured to send second indication information to the second terminal if the first event is satisfied; the second indication information is used for indicating the second terminal to perform SL reception on one or more carriers based on second overhead, or indicating the second terminal to perform SL reception based on the pattern after the first terminal performs rate matching or punching;

wherein the second overhead comprises at least one of:

an overlapping portion of the first transmission resource of the first terminal on the first carrier and a first occasion and/or a first reception resource of the first terminal on at least one second carrier;

an overlapping portion of the first transmission resource of the first terminal on the first carrier and a second occasion and/or a second transmission resource of the second terminal on at least one third carrier;

and overlapping part of the first transmission resource of the first terminal on the first carrier and the third transmission resource of the second terminal and/or the third terminal on at least one fourth carrier.

Optionally, the first transmission resource includes at least one of:

periodic reserved resources and/or aperiodic reserved resources for transmission;

A transport block TB to be transmitted;

PSSCH to be transmitted;

PSCCH to be transmitted;

PSSCH DMRS to be transmitted;

PSCCH DMRS to be transmitted.

Optionally, the first occasion and/or the second occasion comprises at least one of:

physical sidelink feedback channel PSFCH opportunities;

PSFCH；

PSFCH AGC；

PSFCH GP；

GP symbol;

AGC symbols;

TX switching period.

Optionally, the first reception resource comprises at least one of:

reserved resources for reception;

a TB to be received;

PSSCH to be received;

PSCCH to be received;

PSSCH DMRS to be received;

PSCCH DMRS to be received;

PSFCH to be received;

PSFCH AGC to be received;

the PSFCH GP to be received.

Optionally, the second transmission resource and/or the third transmission resource includes at least one of:

a TB to be transmitted;

PSSCH to be transmitted;

PSCCH to be transmitted;

PSSCH DMRS to be transmitted;

PSCCH DMRS to be transmitted;

PSFCH to be sent;

PSFCH AGC to be sent;

the PSFCH GP to be transmitted.

Optionally, the second reception resource comprises at least one of:

reserved resources for reception;

a TB to be received;

PSSCH to be received;

PSCCH to be received;

PSSCH DMRS to be received;

PSCCH DMRS to be received;

resources for reception are recommended or desired.

Optionally, the sending module 1301 is further specifically configured to determine, based on the priority of each piece of first information and the priority of M2 pieces of second information, a sending priority corresponding to each piece of first information and a receiving priority corresponding to each piece of second information; the sending priority is the highest priority in each piece of first information, and the receiving priority is the highest priority in each piece of second information;

the transmitting module 1301 is further specifically configured to perform any one of the following based on the transmission priority and the reception priority:

the first terminal transmits each piece of first information in the case that the transmission priority is higher than the reception priority;

the first terminal transmits each piece of first information in the case that the transmission priority is equal to the reception priority;

receiving each piece of second information by the first terminal under the condition that the sending priority is lower than the receiving priority;

receiving each piece of second information by the first terminal in the case that the transmission priority is equal to the reception priority;

The first terminal sends each piece of first information under the condition that the sending priority is larger than a first threshold value;

the first terminal transmits each piece of first information under the condition that the transmission priority is equal to a first threshold value;

receiving each piece of second information by the first terminal under the condition that the transmission priority is smaller than a first threshold value;

receiving each piece of second information by the first terminal under the condition that the transmission priority is equal to a first threshold value;

receiving each piece of second information by the first terminal under the condition that the receiving priority is larger than a second threshold value;

receiving each piece of second information by the first terminal under the condition that the receiving priority is equal to a second threshold value;

the first terminal sends each piece of first information under the condition that the receiving priority is smaller than a second threshold value;

the first terminal sends each piece of first information under the condition that the receiving priority is equal to a second threshold value;

when the priority of m1 pieces of first information is greater than a third threshold value, the priority of m2 pieces of second information is greater than a fourth threshold value, and m1 is greater than m2, the first terminal sends each piece of first information;

When the priority of m1 pieces of first information is greater than a third threshold value, the priority of m2 pieces of second information is greater than a fourth threshold value, and m1 is equal to m2, the first terminal sends each piece of first information;

when the priority of m1 pieces of first information is greater than a third threshold value, the priority of m2 pieces of second information is greater than a fourth threshold value, and m1 is smaller than m2, the first terminal receives each piece of second information;

when the priority of m1 pieces of first information is greater than a third threshold value, the priority of m2 pieces of second information is greater than a fourth threshold value, and m1 is equal to m2, the first terminal receives each piece of second information;

if the priority of at least one first message is greater than or equal to a fifth threshold, the first terminal sends each first message;

receiving, by the first terminal, each of the second information in a case where the priority of each of the first information is less than or equal to a fifth threshold;

receiving each piece of second information by the first terminal when the priority of at least one piece of second information is greater than or equal to a sixth threshold; and the first terminal sends each piece of first information under the condition that the priority of each piece of second information is smaller than or equal to a sixth threshold value.

Optionally, the transmitting module 1301 is further configured to calculate, based on the target transmission resource, the number N 'of resource elements RE available for PSSCH in one physical resource block PRB using formula (1)' _RE ：

Wherein,characterizing a third overhead>Characterizing the number of sub-carriers within one PRB, < >>Characterizing the number of symbols available for side-row in a time slot, for example>Characterizing the number of symbols occupied by the physical sidelink feedback channel PSFCH,representing the RE number occupied by the phase tracking reference signal PT-RS and the channel state information reference signal CSI-RS,/and the like>Representing the average number of DMRS resource elements RE in one time slot;

the third overhead includes at least one of:

the first sending resource of the first terminal on the first carrier wave and the first opportunity and/or the first receiving resource of the first terminal on at least one second carrier wave have the overlapped symbol number;

the first sending resource of the first terminal on the first carrier wave and the second sending resource of the second terminal on at least one third carrier wave have overlapped symbol numbers;

the first transmission resource of the first terminal on the first carrier wave and the third transmission resource of the second terminal and/or the third terminal on at least one fourth carrier wave have overlapped symbol numbers.

Optionally, the transmitting module 1301 is further configured to calculate, based on the target transmission resource, the number of REs Q 'occupied by the second secondary side link control information SCI using formula (2)' _SCI2 ：

Wherein,and l does not include the fourth overhead +.>O _SCI2 Bit number, L, characterizing second-level SCI information _SCI2 CRC length characterizing second order SCI, +.>The code rate offset of the second order SCI is characterized,characterizing modulation order of second order SCIR represents a code rate corresponding to a modulation and coding strategy MCS index indicated in a MCS indication domain in a first order SCI, alpha represents a maximum spectrum efficiency of a second order SCI configured by radio resource control RRC,characterizing the number of REs available for mapping to the second order SCI on the first Orthogonal Frequency Division Multiplexing (OFDM) symbol,representing the number of symbols occupied by PSFCH, and gamma represents the number of residual REs of PRB where the last second-order SCI modulation symbol is located;

the fourth pin comprises at least one of:

the first sending resource of the first terminal on the first carrier wave and the first opportunity and/or first receiving resource of the first terminal on at least one second carrier wave are overlapped with each other;

the first sending resource of the first terminal on the first carrier wave and the second sending resource of the second terminal on at least one third carrier wave have overlapped symbols;

And the first transmission resource of the first terminal on the first carrier wave and the third transmission resource of the second terminal and/or the third terminal on at least one fourth carrier wave are provided with overlapped symbols.

Optionally, the first overhead includes at least one of:

an overlapping portion of a third reception resource of the second terminal on the first carrier and a fourth occasion and/or a fourth transmission resource of the second terminal on at least one sixth carrier;

overlapping portions of third reception resources of the second terminal on the first carrier with fifth and/or fourth reception resources of the first terminal on at least one seventh carrier;

and overlapping portions of third receiving resources of the second terminal on the first carrier and sixth opportunity and/or fifth receiving resources of the first terminal and/or fourth terminal on at least one eighth carrier.

Fig. 14 is a second schematic structural diagram of an SL data transmission device according to an embodiment of the present invention, and as shown in fig. 14, the SL data transmission device 1400 is applied to a second terminal, and includes:

a receiving module 1401 for, in case the second event is satisfied:

performing rate de-matching or demodulation or reception on the third receiving resource on the first carrier wave to obtain a target receiving resource; and receiving N1 pieces of third information based on the target reception resource;

wherein the second event comprises at least one of:

In the SL data transmission apparatus provided in the embodiment of the present invention, in the case where the second event is satisfied, for example, when there is an overlap between the third receiving resource of the second terminal on the first carrier and the opportunity or the transmitting resource on the other carrier, or when there is an overlap between the fifth transmitting resource and the opportunity or the receiving resource on the other carrier, the receiving module may perform rate-de-matching or demodulation or receiving on the third receiving resource, to obtain a target receiving resource without a receiving-transmitting conflict, and receive N1 pieces of third information based on the target receiving resource; or the receiving module receives the third information or sends the fourth information based on the priority of the N1 third information to be received and the priority of the N2 fourth information to be sent, so that the problem of receiving and sending conflict of different carriers during carrier aggregation is solved, and the SL transmission performance is further improved.

Optionally, the receiving module 1401 is specifically configured to determine a resource mapping of a third receiving resource on the first carrier;

in determining a resource mapping of a third reception resource on the first carrier, at least one of:

the third receiving resource is subjected to rate de-matching at a position or symbol which is not overlapped with the fourth opportunity and/or the fourth sending resource on at least one sixth carrier;

The third receiving resource is not subjected to rate de-matching at a position or symbol overlapping with a fourth opportunity and/or a fourth sending resource on at least one sixth carrier;

the third reception resource is subjected to rate de-matching at a position or symbol where no overlap exists with the fifth opportunity and/or the fourth reception resource on at least one seventh carrier;

the third reception resource is not subjected to rate de-matching at a position or symbol overlapping with a fifth opportunity and/or a fourth reception resource on at least one seventh carrier;

the third reception resource is subjected to rate de-matching at a position or symbol where no overlap exists with the sixth opportunity and/or the fifth reception resource on at least one eighth carrier;

the third receive resource is not rate-matched in a position or symbol overlapping with a sixth occasion and/or a fifth receive resource on at least one eighth carrier.

Optionally, the receiving module 1401 is further specifically configured to demodulate or receive the third receiving resource on the first carrier; at least one of the following is satisfied when demodulating or receiving the third reception resource on the first carrier:

demodulating or receiving the third receiving resource at a position or symbol which does not overlap with the fourth opportunity and/or the fourth sending resource on at least one sixth carrier;

The third reception resource is not demodulated or received in a position or symbol overlapping with a fourth occasion and/or a fourth transmission resource on at least one sixth carrier;

demodulation or reception of the third reception resource at a position or symbol where there is no overlap with the fifth occasion and/or the fourth reception resource on the at least one seventh carrier;

the third reception resource is not demodulated or received in a position or symbol that overlaps with a fifth occasion and/or a fourth reception resource on at least one seventh carrier;

demodulation or reception of the third reception resource at a position or symbol where there is no overlap with the sixth occasion and/or the fifth reception resource on the at least one eighth carrier;

the third reception resource is not demodulated or received in a position or symbol that overlaps with a sixth occasion and/or a fifth reception resource on at least one eighth carrier.

Optionally, the receiving module 1401 is further specifically configured to perform rate de-matching or demodulation or receiving on the third receiving resource on the first carrier based on the target pattern;

wherein the target pattern comprises at least one of the following:

rate matching or puncturing pattern of the first terminal on one or more carriers based on the second indication information;

A pattern determined based on the location of the third reception resource and a fourth occasion of the second terminal on at least one sixth carrier and/or a location of whether or not a fourth transmission resource overlaps or overlaps;

a pattern determined based on the location of the third reception resource and a fifth occasion of the first terminal on at least one seventh carrier and/or whether or not a fourth reception resource overlaps or overlaps;

and determining pattern based on the position of the third receiving resource and the sixth opportunity of the first terminal and/or the fourth terminal on at least one eighth carrier and/or whether the fifth receiving resource is overlapped or not.

Optionally, the receiving module 1401 is further configured to send first indication information to the first terminal if the second event is satisfied; the first indication information is used for indicating the first terminal to perform SL transmission on one or more carriers based on first overhead or indicating related information of rate matching or punching of the first terminal;

wherein the first overhead comprises at least one of:

Optionally, the third reception resource comprises at least one of:

reserved resources for reception;

a TB to be received;

PSSCH to be received;

PSCCH to be received;

PSSCH DMRS to be received;

PSCCH DMRS to be received.

Optionally, the fourth occasion, the fifth occasion and/or the sixth occasion, includes at least one of:

PSFCH timing;

PSFCH；

PSFCH AGC；

PSFCH GP；

GP symbol;

AGC symbols;

TX switching period.

Optionally, the fourth transmission resource includes at least one of:

a TB to be transmitted;

PSSCH to be transmitted;

PSCCH to be transmitted;

PSSCH DMRS to be transmitted;

PSCCH DMRS to be transmitted;

PSFCH to be sent;

PSFCH AGC to be sent;

The PSFCH GP to be transmitted.

Optionally, the fourth receiving resource and/or the fifth receiving resource comprises at least one of:

reserved resources for reception;

a TB to be received;

PSSCH to be received;

PSCCH to be received;

PSSCH DMRS to be received;

PSCCH DMRS to be received;

PSFCH to be received;

PSFCH AGC to be received;

the PSFCH GP to be received.

Optionally, the fifth transmission resource includes at least one of:

a TB to be transmitted;

PSSCH to be transmitted;

PSCCH to be transmitted;

PSSCH DMRS to be transmitted;

PSCCH DMRS to be transmitted.

Optionally, the receiving module 1401 is further specifically configured to determine, based on the priority of each third information and the priority of N2 fourth information, a receiving priority corresponding to each third information and a sending priority corresponding to each fourth information; the receiving priority is the highest priority in each third information, and the sending priority is the highest priority in each fourth information;

the receiving module 1401 is further specifically configured to perform any one of the following based on the reception priority and the transmission priority:

Receiving each piece of third information by the second terminal in a case where the reception priority is higher than the transmission priority;

receiving each third information by the second terminal in the case that the reception priority is equal to the transmission priority;

the second terminal transmits each piece of fourth information in the case where the reception priority is lower than the transmission priority;

the second terminal transmits each piece of fourth information in the case where the reception priority is equal to the transmission priority;

receiving each piece of third information by the second terminal under the condition that the receiving priority is larger than a seventh threshold value;

receiving each of the third information by the second terminal in a case where the reception priority is equal to a seventh threshold;

the second terminal sends each piece of fourth information under the condition that the receiving priority is smaller than a seventh threshold value;

the second terminal transmits each piece of fourth information in the case that the reception priority is equal to a seventh threshold value;

the second terminal transmits each piece of fourth information under the condition that the transmission priority is larger than an eighth threshold value;

the second terminal transmits each piece of fourth information in the case where the transmission priority is equal to an eighth threshold value;

Receiving each piece of third information by the second terminal under the condition that the transmission priority is smaller than an eighth threshold value;

receiving, by the second terminal, each of the third information in a case where the transmission priority is equal to an eighth threshold;

the second terminal receives each third information when the priority of n1 pieces of third information is greater than a ninth threshold, the priority of n2 pieces of fourth information is greater than a tenth threshold, and n1 is greater than n 2;

in the case that the priority of n1 pieces of third information is greater than a ninth threshold, the priority of n2 pieces of fourth information is greater than a tenth threshold, and n1 is equal to n2, the second terminal receives each piece of third information;

when the priority of n1 pieces of third information is greater than a ninth threshold, the priority of n2 pieces of fourth information is greater than a tenth threshold, and n1 is less than n2, the second terminal transmits each piece of fourth information;

when the priority of n1 pieces of third information is greater than a ninth threshold, the priority of n2 pieces of fourth information is greater than a tenth threshold, and n1 is equal to n2, the second terminal transmits each piece of fourth information;

receiving, by the second terminal, each third information when there is at least one third information having a priority greater than or equal to an eleventh threshold;

The second terminal transmits each of the fourth information in a case where the priority of each of the third information is less than or equal to an eleventh threshold;

the second terminal sends each fourth information when the priority of at least one fourth information is greater than or equal to a twelfth threshold value;

and receiving each third information by the second terminal in the case that the priority of each fourth information is smaller than or equal to a twelfth threshold value.

Optionally, the receiving module 1401 is further specifically configured to calculate, based on the target receiving resource, the number N 'of resource elements RE available for PSSCH within one physical resource block PRB using formula (3)' _RE ：

Wherein,characterizing a fifth overhead, < >>Characterizing the number of sub-carriers within one PRB, < >>Characterizing the number of symbols available for side-row in a time slot, for example>Characterizing the number of symbols occupied by the physical sidelink feedback channel PSFCH,representing the RE number occupied by the phase tracking reference signal PT-RS and the channel state information reference signal CSI-RS,/and the like>Representing the average number of DMRS resource elements RE in one time slot;

the fifth overhead includes at least one of:

the third receiving resource of the second terminal on the first carrier wave and the fourth opportunity and/or the fourth sending resource of the second terminal on at least one sixth carrier wave have the overlapped symbol number;

The third receiving resource of the second terminal on the first carrier wave and the fifth opportunity and/or the fourth receiving resource of the first terminal on at least one seventh carrier wave have the overlapped symbol number;

and the third receiving resource of the second terminal on the first carrier wave and the sixth opportunity and/or the fifth receiving resource of the first terminal and/or the fourth terminal on at least one eighth carrier wave have the overlapped symbol number.

Optionally, the receiving module 1401 is further specifically configured to calculate, based on the target receiving resource, the number of REs Q 'occupied by the second secondary side link control information SCI using formula (4)' _SCI2 ：

Wherein,and l does not include the sixth overhead->O _SCI2 Bit number, L, characterizing second-level SCI information _SCI2 CRC length characterizing second order SCI, +.>The code rate offset of the second order SCI is characterized,representing the modulation order of the second-order SCI, R representing the code rate corresponding to the modulation and coding strategy MCS index indicated in the MCS indication domain in the first-order SCI, alpha representing the maximum spectrum efficiency of the second-order SCI configured by the radio resource control RRC,characterizing the number of REs available for mapping to the second order SCI on the first Orthogonal Frequency Division Multiplexing (OFDM) symbol,representing the number of symbols occupied by PSFCH, and gamma represents the number of residual REs of PRB where the last second-order SCI modulation symbol is located;

The sixth expense includes at least one of:

a third receiving resource of the second terminal on the first carrier wave and a fourth opportunity and/or a fourth sending resource of the second terminal on at least one sixth carrier wave are provided with overlapped symbols;

a third receiving resource of the second terminal on the first carrier wave and a fifth opportunity and/or a fourth receiving resource of the first terminal on at least one seventh carrier wave are overlapped with each other;

and the third receiving resource of the second terminal on the first carrier is overlapped with the sixth opportunity and/or the fifth receiving resource of the first terminal and/or the fourth terminal on at least one eighth carrier.

Optionally, the second overhead includes at least one of:

The SL data transmission device in the embodiment of the present application may be an electronic device, for example, an electronic device with an operating system, or may be a component in an 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, 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 application are not specifically limited.

The SL data transmission device provided in the embodiment of the present application can implement each process implemented by the embodiments of the methods of fig. 2 to fig. 12, and achieve the same technical effects, so that repetition is avoided, and no detailed description is given here.

Fig. 15 is a schematic structural diagram of a communication device provided in the embodiment of the present application, as shown in fig. 15, the communication device 1500 includes a processor 1501 and a memory 1502, where the memory 1502 stores a program or an instruction that can be executed on the processor 1501, for example, when the communication device 1500 is a first terminal, the program or the instruction is executed by the processor 1501 to implement each step of the first terminal side SL data transmission method embodiment, and the same technical effects can be achieved. When the communication device 1500 is a second terminal, the program or the instruction when executed by the processor 1501 realizes the steps of the embodiment of the data transmission method of the second terminal side SL, and the same technical effects can be achieved, so that repetition is avoided and no further description is given here.

The embodiment of the application also provides a first terminal, which comprises a processor and a communication interface, wherein the communication interface is used for meeting the condition of a first event:

wherein the first event includes at least one of:

the first terminal receives first indication information from the second terminal; the first indication information is used for indicating the first terminal to perform SL transmission on one or more carriers based on first overhead or indicating related information of rate matching or punching of the first terminal. The first terminal embodiment corresponds to the first terminal side method embodiment, and each implementation process and implementation manner of the method embodiment are applicable to the first terminal embodiment, and the same technical effects can be achieved.

Fig. 16 is a schematic structural diagram of a first terminal provided in an embodiment of the present application, and as shown in fig. 16, the first terminal 1600 includes, but is not limited to: at least some of the components of the radio frequency unit 1601, the network module 1602, the audio output unit 1603, the input unit 1604, the sensor 1605, the display unit 1606, the user input unit 1607, the interface unit 1608, the memory 1609, the processor 1610, and the like.

Those skilled in the art will appreciate that first terminal 1600 may also include a power source (e.g., a battery) for powering the various components, which may be logically connected to processor 1610 by a power management system that performs functions such as managing charge, discharge, and power consumption. The first terminal structure shown in fig. 16 is not limited to the first terminal, and the terminal may include more or less components than shown, or may combine some components, or may be arranged in different components, which will not be described herein.

It should be appreciated that in embodiments of the present application, the input unit 1604 may include a graphics processing unit (Graphics Processing Unit, GPU) 16041 and a microphone 16042, with the graphics processor 16041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 1606 may include a display panel 16061, and the display panel 16061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1607 includes at least one of a touch panel 16071 and other input devices 16072. The touch panel 16071, also referred to as a touch screen. The touch panel 16071 may include two parts, a touch detection device and a touch controller. Other input devices 16072 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 this embodiment, after receiving downlink data from the network side device, the radio frequency unit 1601 may transmit the downlink data to the processor 1610 for processing; in addition, the radio frequency unit 1601 may send uplink data to the network-side device. In general, radio frequency unit 1601 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

Memory 1609 may be used to store software programs or instructions and various data. The memory 1609 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, memory 1609 may include volatile memory or nonvolatile memory, or memory 1609 may include both volatile and 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 RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 1609 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

Processor 1610 may include one or more processing units; optionally, processor 1610 integrates an application processor that primarily handles operations related to operating systems, user interfaces, applications, etc., and a modem processor that primarily handles 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 1610.

The embodiment of the application also provides a second terminal, which comprises a processor and a communication interface, wherein the communication interface is used for meeting the condition of a second event:

performing rate de-matching or demodulation or reception on the third receiving resource on the first carrier wave to obtain a target receiving resource; receiving N1 pieces of third information based on the target reception resource;

wherein the second event comprises at least one of:

The second terminal embodiment corresponds to the second terminal side method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the second terminal embodiment, and the same technical effects can be achieved.

Fig. 17 is a schematic structural diagram of a second terminal provided in an embodiment of the present application, and as shown in fig. 17, the second terminal 1700 includes, but is not limited to: at least some of the components of the radio frequency unit 1701, the network module 1702, the audio output unit 1703, the input unit 1704, the sensor 1705, the display unit 1706, the user input unit 1707, the interface unit 1708, the memory 1709, the processor 1710, and the like.

Those skilled in the art will appreciate that the second terminal 1700 may further include a power source (e.g., a battery) for powering the various components, and that the power source may be logically coupled to the processor 1710 via a power management system to perform functions such as managing charging, discharging, and power consumption via the power management system. The second terminal structure shown in fig. 17 does not constitute a limitation of the second terminal, and the terminal may include more or less components than illustrated, or may combine some components, or may be arranged in different components, which will not be described herein.

It should be appreciated that in embodiments of the present application, the input unit 1704 may include a graphics processing unit (Graphics Processing Unit, GPU) 17041 and a microphone 17042, with the graphics processor 17041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 1706 may include a display panel 17061, and the display panel 17061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1707 includes at least one of a touch panel 17071 and other input devices 17072. The touch panel 17071 is also referred to as a touch screen. The touch panel 17071 can include two parts, a touch detection device and a touch controller. Other input devices 17072 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 this embodiment, after receiving downlink data from the network side device, the radio frequency unit 1701 may transmit the downlink data to the processor 1710 for processing; in addition, the radio frequency unit 1701 may send uplink data to the network side device. In general, the radio frequency unit 1701 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 1709 may be used for storing software programs or instructions and various data. The memory 1709 may mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage 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 1709 may include volatile memory or nonvolatile memory, or the memory 1709 may include both volatile and 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 RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 1709 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

Processor 1710 can include one or more processing units; optionally, the processor 1710 integrates an application processor that primarily handles operations related to the operating system, user interface, and applications, and a modem processor that primarily handles 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 1710.

The embodiment of the application also provides a SL data transmission system, which comprises: a first terminal operable to perform the steps of the first terminal-side SL data transmission method described above, and a second terminal operable to perform the steps of the second terminal-side SL data transmission method described above.

The embodiment of the present application further provides a readable storage medium, which may be volatile or non-volatile, and the readable storage medium stores a program or an instruction, where the program or the instruction implements each process of the above SL data transmission method embodiment when executed by a processor, and the process may achieve the same technical effect, so that repetition is avoided, and no further description is given here.

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.

The embodiment of the application further provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction, implement each process of the above SL data transmission method embodiment, and achieve the same technical effect, so that repetition is avoided, and no further description is given here.

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, where the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement each process of the above-mentioned SL data transmission method embodiment, and achieve the same technical effects, so that repetition is avoided, and details are not repeated herein.

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 also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in 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 may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. A method for side link SL data transmission, comprising:

in the case where the first event is satisfied,

wherein the first event includes at least one of:

2. The SL data transmission method according to claim 1, wherein the first terminal rate-matches the first transmission resource on the first carrier, comprises:

the first terminal, when determining the resource mapping of the first transmission resource on the first carrier, satisfies at least one of the following:

3. The SL data transmission method according to claim 1, wherein the first terminal punctures a first transmission resource on the first carrier, comprising:

4. A SL data transmission method according to any of claims 1 to 3, wherein the method further comprises:

the first terminal determines a demodulation reference signal (DMRS) pattern on the first carrier based on the target transmission resource;

or, the first terminal selects DMRS pattern on the first carrier; the DMRS pattern satisfies at least one of:

the DMRS pattern is not punctured;

5. The SL data transmission method according to claim 1, further comprising:

under the condition that the first event is met, the first terminal sends second indication information to the second terminal; the second indication information is used for indicating the second terminal to perform SL reception on one or more carriers based on second overhead, or indicating the second terminal to perform SL reception based on the pattern after the first terminal performs rate matching or punching;

Wherein the second overhead comprises at least one of:

6. The SL data transmission method according to any one of claims 1 to 5, wherein said first transmission resource comprises at least one of:

a transport block TB to be transmitted;

physical side link shared channel PSSCH to be transmitted;

a physical side link control channel PSCCH to be transmitted;

PSSCH DMRS to be transmitted;

PSCCH DMRS to be transmitted.

7. The SL data transmission method according to any one of claims 1 to 6, wherein the first occasion and/or the second occasion comprises at least one of:

Physical sidelink feedback channel PSFCH opportunities;

PSFCH；

PSFCH automatic gain control AGC;

PSFCH guard interval GP;

GP symbol;

AGC symbols;

the symbols occupied by the switching period TX switching period are transmitted.

8. The SL data transmission method according to any of claims 1 to 7, wherein the first reception resource comprises at least one of:

reserved resources for reception;

a TB to be received;

PSSCH to be received;

PSCCH to be received;

PSSCH DMRS to be received;

PSCCH DMRS to be received;

PSFCH to be received;

PSFCH AGC to be received;

the PSFCH GP to be received.

9. The SL data transmission method according to any of claims 1 to 8, wherein said second transmission resource and/or said third transmission resource comprises at least one of:

a TB to be transmitted;

PSSCH to be transmitted;

PSCCH to be transmitted;

PSSCH DMRS to be transmitted;

PSCCH DMRS to be transmitted;

PSFCH to be sent;

PSFCH AGC to be sent;

the PSFCH GP to be transmitted.

10. The SL data transmission method according to any of claims 1 to 8, wherein the second reception resource comprises at least one of:

Reserved resources for reception;

a TB to be received;

PSSCH to be received;

PSCCH to be received;

PSSCH DMRS to be received;

PSCCH DMRS to be received;

resources for reception are recommended or desired.

11. The SL data transmission method according to claim 1, wherein the first terminal transmits each of the first information or receives each of the second information based on a priority of M1 pieces of first information and a priority of M2 pieces of second information, comprising:

the first terminal determines a sending priority corresponding to each piece of first information and a receiving priority corresponding to each piece of second information based on the priority of each piece of first information and the priority of M2 pieces of second information; the sending priority is the highest priority in each piece of first information, and the receiving priority is the highest priority in each piece of second information;

receiving each piece of second information by the first terminal when the priority of at least one piece of second information is greater than or equal to a sixth threshold;

And the first terminal sends each piece of first information under the condition that the priority of each piece of second information is smaller than or equal to a sixth threshold value.

12. The SL data transmission method according to claim 1, wherein after the first terminal performs rate matching or puncturing on the first transmission resource on the first carrier to obtain the target transmission resource, the method further comprises:

the first terminal calculates a physical resource block PRB based on the target transmission resource by adopting a formula (1)Number of resource elements RE N 'available for PSSCH' _RE ：

the third overhead includes at least one of:

13. The SL data transmission method according to claim 1, wherein after the first terminal performs rate matching or puncturing on the first transmission resource on the first carrier to obtain the target transmission resource, the method further comprises:

the first terminal calculates the RE number Q 'occupied by the second step side link control information SCI by adopting a formula (2) based on the target transmission resource' _SCI2 ：

Wherein,and l does not include the fourth overhead +.>O _SCI2 Bit number, L, characterizing second-level SCI information _SCI2 Cyclic redundancy check CRC length characterizing second order SCI,>code rate offset characterizing second order SCI, +.>Representing the modulation order of the second-order SCI, R representing the code rate corresponding to the modulation and coding strategy MCS index indicated in the MCS indication domain in the first-order SCI, alpha representing the maximum spectrum efficiency of the second-order SCI configured by the radio resource control RRC, Characterizing the number of REs available for mapping to the second order SCI on the first Orthogonal Frequency Division Multiplexing (OFDM) symbol,representing the number of symbols occupied by PSFCH, and gamma represents the number of residual REs of PRB where the last second-order SCI modulation symbol is located;

the fourth pin comprises at least one of:

14. The SL data transmission method according to claim 1, wherein the first overhead comprises at least one of:

15. A method for side link SL data transmission, comprising:

in the case that the second event is satisfied,

wherein the second event comprises at least one of:

16. The SL data transmission method of claim 15, wherein the second terminal de-rate-matches the third reception resource on the first carrier, comprises:

The second terminal, when determining the resource mapping of the third receiving resource on the first carrier, satisfies at least one of the following:

17. The SL data transmission method according to claim 15, wherein the second terminal demodulates or receives the third reception resource on the first carrier, comprising:

When demodulating or receiving the third receiving resource on the first carrier, the second terminal meets at least one of the following conditions:

18. A SL data transmission method according to any of claims 15 to 17, wherein said second terminal de-rate-matches or demodulates or receives the third reception resource on the first carrier, comprising:

The second terminal performs de-rate matching or demodulation or reception on a third receiving resource on the first carrier based on a target pattern;

wherein the target pattern comprises at least one of the following:

19. The SL data transmission method according to claim 15, further comprising:

under the condition that the second event is met, the second terminal sends first indication information to the first terminal; the first indication information is used for indicating the first terminal to perform SL transmission on one or more carriers based on first overhead or indicating related information of rate matching or punching of the first terminal;

Wherein the first overhead comprises at least one of:

20. The SL data transmission method according to any of claims 15 to 19, wherein the third reception resource comprises at least one of:

reserved resources for reception;

a transport block TB to be received;

physical side link shared channel PSSCH to be received;

a physical side link control channel PSCCH to be received;

PSSCH demodulation reference signal DMRS to be received;

PSCCH DMRS to be received.

21. The SL data transmission method according to any one of claims 15 to 20, wherein the fourth occasion, the fifth occasion, and/or the sixth occasion, comprises at least one of:

Physical sidelink feedback channel PSFCH opportunities;

PSFCH；

PSFCH automatic gain control AGC;

PSFCH guard interval GP;

GP symbol;

AGC symbols;

22. The SL data transmission method according to any of claims 15 to 21, wherein the fourth transmission resource comprises at least one of:

a TB to be transmitted;

PSSCH to be transmitted;

PSCCH to be transmitted;

PSSCH DMRS to be transmitted;

PSCCH DMRS to be transmitted;

PSFCH to be sent;

PSFCH AGC to be sent;

the PSFCH GP to be transmitted.

23. The SL data transmission method according to any of claims 15 to 22, wherein the fourth reception resource and/or the fifth reception resource comprises at least one of:

reserved resources for reception;

a TB to be received;

PSSCH to be received;

PSCCH to be received;

PSSCH DMRS to be received;

PSCCH DMRS to be received;

PSFCH to be received;

PSFCH AGC to be received;

the PSFCH GP to be received.

24. The SL data transmission method according to any of claims 15 to 23, wherein the fifth transmission resource comprises at least one of:

a TB to be transmitted;

PSSCH to be transmitted;

PSCCH to be transmitted;

PSSCH DMRS to be transmitted;

PSCCH DMRS to be transmitted.

25. The SL data transmission method according to claim 15, wherein the second terminal receives each of the third information or transmits each of the fourth information based on a priority of N1 third information and a priority of N2 fourth information, comprising:

26. The SL data transmission method according to claim 15, wherein after the second terminal performs rate de-matching or demodulation or reception on the third reception resource on the first carrier to obtain the target reception resource, the method further comprises:

the second terminal calculates the number N 'of resource elements RE available for PSSCH in one physical resource block PRB based on the target receiving resource by adopting a formula (3)' _RE ：

Wherein,characterizing a fifth overhead, < >>Characterizing the number of sub-carriers within one PRB, < >>Characterizing the number of symbols available for side-row in a time slot, for example>Symbol number representing PSFCH occupancy, < ->Representing the RE number occupied by the phase tracking reference signal PT-RS and the channel state information reference signal CSI-RS,/and the like>Representing the average number of DMRS resource elements RE in one time slot;

the fifth overhead includes at least one of:

27. The SL data transmission method according to claim 15, wherein after the second terminal performs rate de-matching or demodulation or reception on the third reception resource on the first carrier to obtain the target reception resource, the method further comprises:

the second terminal calculates the RE number Q 'occupied by the second step side link control information SCI by adopting a formula (4) based on the target receiving resource' _SCI2 ：

Wherein,and l does not include the sixth overhead->O _SCI2 Bit number, L, characterizing second-level SCI information _SCI2 Cyclic redundancy check CRC length characterizing second order SCI,>code rate offset characterizing second order SCI, +.>Representing the modulation order of the second-order SCI, R representing the code rate corresponding to the modulation and coding strategy MCS index indicated in the MCS indication domain in the first-order SCI, alpha representing the maximum spectrum efficiency of the second-order SCI configured by the radio resource control RRC, Characterizing the number of REs available for mapping to the second order SCI on the first Orthogonal Frequency Division Multiplexing (OFDM) symbol,representing the number of symbols occupied by PSFCH, and gamma represents the number of residual REs of PRB where the last second-order SCI modulation symbol is located;

the sixth expense includes at least one of:

28. The SL data transmission method of claim 15, wherein the second overhead comprises at least one of:

29. A side link SL data transmission apparatus, comprising:

wherein the first event includes at least one of:

30. A side link SL data transmission apparatus, comprising:

wherein the second event comprises at least one of:

31. A first terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the sidelink SL data transmission method of any of claims 1 to 14.

32. A second terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the sidelink SL data transmission method of any of claims 15 to 28.

33. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implement the sidelink SL data transmission method according to any one of claims 1 to 14, or the steps of the sidelink SL data transmission method according to any one of claims 15 to 28.