CN117730594A

CN117730594A - Wireless communication method and terminal equipment

Info

Publication number: CN117730594A
Application number: CN202180100901.6A
Authority: CN
Inventors: 赵振山; 林晖闵; 张世昌; 马腾; 丁伊
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2024-03-19
Also published as: WO2023060559A1

Abstract

The embodiment of the application provides a wireless communication method and terminal equipment, which can realize sidestream multi-carrier transmission. A method of wireless communication, comprising: the first terminal equipment receives first information sent by the second terminal equipment; the first information includes at least one of: the number of simultaneously transmitted carriers supported by the second terminal device, the number of simultaneously received carriers supported by the second terminal device, a frequency band combination supported by the second terminal device, a carrier combination supported by the second terminal device, whether the second terminal device supports simultaneous transmission on carriers of different frequency bands, whether the second terminal device supports simultaneous reception on carriers of different frequency bands, whether the second terminal device supports simultaneous transmission on non-adjacent carriers, and whether the second terminal device supports simultaneous reception on non-adjacent carriers; the first terminal device selects at least one carrier according to the first information, and the at least one carrier is used for sending sidestream information to the second terminal device.

Description

Wireless communication method and terminal equipment

Technical Field

The embodiment of the application relates to the field of communication, and more particularly, to a method and terminal equipment for wireless communication.

Background

In order to improve the transmission throughput of the sidelink system, sidelink multi-carrier transmission is introduced on the sidelink, however, how to select carriers for the sidelink transmission is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a wireless communication method and terminal equipment, wherein a sending end can select a carrier wave for sidestream transmission based on the terminal capability of a receiving end, so that sidestream multi-carrier transmission is realized.

In a first aspect, a method of wireless communication is provided, the method comprising:

the first terminal equipment receives first information sent by the second terminal equipment; wherein the first information includes at least one of: the number of simultaneously transmitted carriers supported by the second terminal device, the number of simultaneously received carriers supported by the second terminal device, a frequency band combination supported by the second terminal device, a carrier combination supported by the second terminal device, whether the second terminal device supports simultaneous transmission on carriers of different frequency bands, whether the second terminal device supports simultaneous reception on carriers of different frequency bands, whether the second terminal device supports simultaneous transmission on non-adjacent carriers, and whether the second terminal device supports simultaneous reception on non-adjacent carriers;

The first terminal equipment selects at least one carrier according to the first information; wherein the at least one carrier is configured to send sidestream information to the second terminal device.

In a second aspect, there is provided a method of wireless communication, the method comprising:

the second terminal equipment sends first information to the first terminal equipment; wherein,

the first information includes at least one of: the number of simultaneously transmitted carriers supported by the second terminal device, the number of simultaneously received carriers supported by the second terminal device, a frequency band combination supported by the second terminal device, a carrier combination supported by the second terminal device, whether the second terminal device supports simultaneous transmission on carriers of different frequency bands, whether the second terminal device supports simultaneous reception on carriers of different frequency bands, whether the second terminal device supports simultaneous transmission on non-adjacent carriers, and whether the second terminal device supports simultaneous reception on non-adjacent carriers; the first information is used for the first terminal equipment to select at least one carrier, and the at least one carrier is used for the first terminal equipment to send sidestream information to the second terminal equipment.

In a third aspect, a method of wireless communication is provided, the method comprising:

The first terminal equipment receives first indication information sent by the second terminal equipment; the first indication information is used for indicating the side transmission carrier selected by the second terminal equipment;

and the first terminal equipment selects a carrier wave for sending the sidestream information to the second terminal equipment according to the first indication information.

In a fourth aspect, a method of wireless communication is provided, the method comprising:

the second terminal equipment sends first indication information to the first terminal equipment; the first indication information is used for indicating the side transmission carrier selected by the second terminal equipment, and the first indication information is used for the first terminal equipment to select the carrier used for transmitting the side transmission information to the second terminal equipment.

In a fifth aspect, a terminal device is provided for performing the method in the first aspect.

Specifically, the terminal device comprises a functional module for performing the method in any of the above first to fourth aspects.

In a sixth aspect, there is provided a terminal device comprising a processor and a memory; wherein the memory is for storing a computer program and the processor is for calling and running the computer program stored in the memory for performing the method of any of the above first to fourth aspects.

In a seventh aspect, there is provided an apparatus for implementing the method of any one of the first to fourth aspects.

Specifically, the device comprises: a processor for calling and running a computer program from a memory, causing a device in which the apparatus is installed to perform the method of any one of the first to fourth aspects as described above.

In an eighth aspect, a computer-readable storage medium is provided for storing a computer program that causes a computer to execute the method of any one of the first to fourth aspects.

In a ninth aspect, there is provided a computer program product comprising computer program instructions for causing a computer to perform the method of any one of the first to fourth aspects above.

In a tenth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of any one of the first to fourth aspects described above.

Through the technical solutions of the first aspect and the second aspect, the first terminal device selects at least one carrier for sending sidestream information to the second terminal device according to the first information. That is, the first terminal device may select a carrier for sidestream transmission based on the terminal capability of the second terminal device, thereby implementing sidestream multi-carrier transmission.

With the technical solutions of the third aspect and the fourth aspect, the first terminal device selects a carrier for transmitting side line information to the second terminal device according to the indication information for indicating the side line transmission carrier selected by the second terminal device. That is, the first terminal device may select a carrier for sidelink transmission based on the sidelink transmission carrier selected by the second terminal device, thereby implementing sidelink multi-carrier transmission.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture to which embodiments of the present application apply.

Fig. 2 is a schematic diagram of another communication system architecture to which embodiments of the present application apply.

Fig. 3 is a schematic diagram of network coverage area inside communication provided in the present application.

Fig. 4 is a schematic diagram of a partial network coverage sidestream communication provided herein.

Fig. 5 is a schematic diagram of a network overlay outside line communication provided herein.

Fig. 6 is a schematic diagram of a side-by-side communication in which a central control node is present, as provided herein.

Fig. 7 is a schematic diagram of a unicast sidestream communication provided herein.

Fig. 8 is a schematic diagram of a multicast side-line communication provided herein.

Fig. 9 is a schematic diagram of a broadcast side-by-side communication provided herein.

Fig. 10 is a schematic diagram of a slot structure in NR-V2X provided herein.

Fig. 11 is a schematic diagram of a side-by-side feedback provided herein.

Fig. 12 is a schematic diagram of a time slot structure of a PSFCH and PSCCH/PSSCH provided herein.

Fig. 13 is a schematic diagram of resources of a side-track feedback channel provided herein.

Fig. 14 is a schematic diagram of a correspondence between transmission resources of a PSFCH and resources of a PSSCH provided in the present application.

Fig. 15 is a schematic interaction flow chart of a method of wireless communication provided according to an embodiment of the present application.

Fig. 16 to 21 are schematic diagrams of carrier selection provided according to an embodiment of the present application, respectively.

Fig. 22 is a schematic interaction flow diagram of another method of wireless communication provided in accordance with an embodiment of the present application.

Fig. 23 to 26 are schematic block diagrams of terminal devices provided according to embodiments of the present application, respectively.

Fig. 27 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

Fig. 28 is a schematic block diagram of an apparatus provided in accordance with an embodiment of the present application.

Fig. 29 is a schematic block diagram of a communication system provided in accordance with an embodiment of the present application.

Detailed Description

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

The technical solution of the embodiment of the application can be applied to various communication systems, for example: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, general packet Radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, long term evolution advanced (Advanced long term evolution, LTE-a) system, evolved universal Radio access (Evolved Universal Terrestrial Radio Access, E-UTRA) system, new Radio (NR) system, evolved system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum, NR-U) system on unlicensed spectrum, non-terrestrial communication network (Non-Terrestrial Networks, NTN) system, universal mobile communication system (Universal Mobile Telecommunication System, UMTS), wireless local area network (Wireless Local Area Networks, WLAN), internet of things (internet of things, ioT), wireless fidelity (Wireless Fidelity, wiFi), fifth Generation communication (5 th-Generation, 5G) system or other communication systems, etc.

Generally, the number of connections supported by the conventional communication system is limited and easy to implement, however, with the development of communication technology, the mobile communication system will support not only conventional communication but also, for example, device-to-Device (D2D) communication, machine-to-machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), inter-vehicle (Vehicle to Vehicle, V2V) communication, or internet of vehicles (Vehicle to everything, V2X) communication, etc., and the embodiments of the present application may also be applied to these communication systems.

In some embodiments, the communication system in the embodiments of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, and a Stand Alone (SA) networking scenario.

In some embodiments, the communication system in the embodiments of the present application may be applied to unlicensed spectrum, where unlicensed spectrum may also be considered as shared spectrum; alternatively, the communication system in the embodiments of the present application may also be applied to licensed spectrum, where licensed spectrum may also be considered as non-shared spectrum.

In some embodiments, the communication system in the embodiments of the present application may be applied to the FR1 frequency band (corresponding to the frequency band range 410MHz to 7.125 GHz), the FR2 frequency band (corresponding to the frequency band range 24.25GHz to 52.6 GHz), and the new frequency band, such as the high frequency band corresponding to the frequency band range 52.6GHz to 71GHz or the frequency band range 71GHz to 114.25 GHz.

In some embodiments, embodiments of the present application may be applied to Non-terrestrial communication network (Non-Terrestrial Networks, NTN) systems, as well as terrestrial communication network (Terrestrial Networks, TN) systems.

Embodiments of the present application describe various embodiments in connection with network devices and terminal devices, where a terminal device may also be referred to as a User Equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, user Equipment, or the like.

The terminal device may be a STATION (ST) in a WLAN, may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) STATION, a personal digital assistant (Personal Digital Assistant, PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, a terminal device in a next generation communication system such as an NR network, or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

In embodiments of the present application, the terminal device may be deployed on land, including indoor or outdoor, hand-held, wearable or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.).

In the embodiment of the present application, the terminal device may be a Mobile Phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented Reality (Augmented Reality, AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned driving (self driving), a wireless terminal device in telemedicine (remote media), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation security (transportation safety), a wireless terminal device in smart city (smart city) or a wireless terminal device in smart home (smart home), a vehicle-mounted communication device, a wireless communication Chip/application specific integrated circuit (application specific integrated circuit, ASIC)/System-on Chip (SoC), or the like.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

In this embodiment of the present application, the network device may be a device for communicating with a mobile device, where the network device may be an Access Point (AP) in a WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, a relay station or an Access Point, a vehicle device, a wearable device, a network device or a base station (gNB) in an NR network, a network device in a PLMN network of future evolution, or a network device in an NTN network, etc.

By way of example and not limitation, in embodiments of the present application, a network device may have a mobile nature, e.g., the network device may be a mobile device. In some embodiments, the network device may be a satellite, a balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous orbit (geostationary earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite, or the like. In some embodiments, the network device may also be a base station located on land, in water, etc.

In this embodiment of the present application, a network device may provide a service for a cell, where a terminal device communicates with the network device through a transmission resource (e.g., a frequency domain resource, or a spectrum resource) used by the cell, where the cell may be a cell corresponding to a network device (e.g., a base station), and the cell may belong to a macro base station, or may belong to a base station corresponding to a Small cell (Small cell), where the Small cell may include: urban cells (Metro cells), micro cells (Micro cells), pico cells (Pico cells), femto cells (Femto cells) and the like, and the small cells have the characteristics of small coverage area and low transmitting power and are suitable for providing high-rate data transmission services.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

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

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

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

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

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

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The following related technologies may be optionally combined with the technical solutions of the embodiments of the present application, which all belong to the protection scope of the embodiments of the present application. Embodiments of the present application include at least some of the following.

Fig. 1 is a schematic diagram of a communication system to which embodiments of the present application are applicable. The transmission resources of the in-vehicle terminals (in-vehicle terminal 121 and in-vehicle terminal 122) are allocated by the base station 110, and the in-vehicle terminals transmit data on the side links according to the resources allocated by the base station 110. Specifically, the base station 110 may allocate resources for single transmission to the terminal, or may allocate resources for semi-static transmission to the terminal.

Fig. 2 is a schematic diagram of another communication system to which embodiments of the present application are applicable. The vehicle-mounted terminals (the vehicle-mounted terminal 131 and the vehicle-mounted terminal 132) autonomously select transmission resources on the resources of the side links to perform data transmission. Optionally, the vehicle-mounted terminal may select the transmission resource randomly, or select the transmission resource by listening.

In the side line communication, according to the network coverage condition of the terminal for communication, the side line communication may be classified into the network coverage inside line communication, as shown in fig. 3; partial network coverage side traffic as shown in fig. 4; and network overlay outside line communications, as shown in fig. 5.

Fig. 3: in network coverage inside-side communication, all terminals performing side-side communication are in the coverage of the base station, so that the terminals can perform side-side communication based on the same side-side configuration by receiving the configuration signaling of the base station.

Fig. 4: under the condition that part of the network covers the side communication, part of terminals for performing the side communication are located in the coverage area of the base station, and the part of terminals can receive the configuration signaling of the base station and perform the side communication according to the configuration of the base station. And the terminal outside the network coverage area cannot receive the configuration signaling of the base station, in this case, the terminal outside the network coverage area determines the sidestream configuration according to the pre-configuration information and the information carried in the physical sidestream broadcast channel (Physical Sidelink Broadcast Channel, PSBCH) sent by the terminal inside the network coverage area, so as to perform sidestream communication.

Fig. 5: for network coverage outside line communication, all terminals for carrying out outside line communication are located outside the network coverage, and all terminals determine the outside line configuration according to pre-configuration information to carry out the outside line communication.

Fig. 6: for side-by-side communication with a central control node, a plurality of terminals form a communication group, the communication group having a central control node, also called a Cluster head terminal (CH), the central control node having one of the following functions: is responsible for the establishment of a communication group; joining and leaving of group members; performing resource coordination, distributing side transmission resources for other terminals, and receiving side feedback information of other terminals; and performing resource coordination and other functions with other communication groups.

It should be noted that, the Device-to-Device communication is based on a Side Link (SL) transmission technology of a Device-to-Device (D2D), and unlike a conventional cellular system in which communication data is received or transmitted through a base station, the internet of vehicles system adopts a direct terminal-to-terminal communication method, so that the system has higher spectral efficiency and lower transmission delay. Two transmission modes are defined in 3GPP, denoted as: a first mode (sidelink resource allocation mode 1) and a second mode (sidelink resource allocation mode 2).

First mode: the transmission resources of the terminal are allocated by the base station, and the terminal transmits data on the side links according to the resources allocated by the base station; the base station may allocate resources for single transmission to the terminal, or may allocate resources for semi-static transmission to the terminal. As shown in fig. 3, the terminal is located in the coverage area of the network, and the network allocates transmission resources for side transmission to the terminal.

Second mode: and the terminal selects one resource from the resource pool to transmit data. As shown in fig. 5, the terminal is located outside the coverage area of the cell, and autonomously selects transmission resources in a preconfigured resource pool to perform side transmission; or as shown in fig. 3, the terminal autonomously selects transmission resources from a resource pool configured by the network to perform side transmission.

In New air-interface-vehicle to other devices (New Radio-Vehicle to Everything, NR-V2X), autopilot is supported, thus placing higher demands on data interaction between vehicles, such as higher throughput, lower latency, higher reliability, greater coverage, more flexible resource allocation, etc.

In LTE-V2X, a broadcast transmission scheme is supported, and in NR-V2X, unicast and multicast transmission schemes are introduced. For unicast transmission, the receiving terminal has only one terminal, as shown in fig. 7, and unicast transmission is performed between UE1 and UE 2; for multicast transmission, the receiving end is all terminals in a communication group or all terminals in a certain transmission distance, as shown in fig. 8, UE1, UE2, UE3 and UE4 form a communication group, wherein UE1 sends data, and other terminal devices in the group are all receiving end terminals; for the broadcast transmission mode, the receiving end is any one of the terminals around the transmitting end terminal, as shown in fig. 9, UE1 is the transmitting end terminal, and the other terminals around it, UE2 to UE6 are all receiving end terminals.

For a better understanding of the embodiments of the present application, the frame structure of the NR-V2X system relevant to the present application will be described.

As shown in fig. 10, which shows a slot structure in NR-V2X, fig. 10 (a) shows a slot structure in which a physical sidelink feedback channel (Physical Sidelink Feedback Channel, PSFCH) is not included in a slot; the diagram (b) in fig. 10 shows a slot structure including the PSFCH.

The physical sidelink control channel (Physical Sidelink Control Channel, PSCCH) in NR-V2X occupies 2 or 3 orthogonal frequency division multiplexing (Orthogonal frequency-division multiplexing, OFDM) symbols from the second sidelink symbol of the slot in the time domain and may occupy {10,12, 15,20,25} physical resource blocks (physical resource block, PRBs) in the frequency domain. To reduce the complexity of blind detection of PSCCH by a UE, only one PSCCH symbol number and PRB number are allowed to be configured in one resource pool. In addition, because the sub-channel is the minimum granularity of the physical sidelink shared channel (Physical Sidelink Shared Channel, PSSCH) resource allocation in NR-V2X, the number of PRBs occupied by the PSCCH must be less than or equal to the number of PRBs contained in one sub-channel in the resource pool, so as not to cause additional restrictions on PSSCH resource selection or allocation. The PSSCH also starts in the time domain from the second side symbol of the slot, the last time domain symbol in the slot being a Guard Period (GP) symbol, the remaining symbols mapping the PSSCH. The first side symbol in the slot is a repetition of the second side symbol, and typically the receiving end terminal uses the first side symbol as an automatic gain control (Auto gain control, AGC) symbol, the data on which is not typically used for data demodulation. The PSSCH occupies M subchannels in the frequency domain, each comprising N consecutive PRBs. As shown in fig. 10 (a).

When a PSFCH channel is included in a slot, the penultimate symbol and the third last symbol in the slot are used for PSFCH channel transmission, and the data on the third last symbol is a repetition of the data on the second last symbol, and one time-domain symbol before the PSFCH channel is used as a GP symbol, as shown in (b) of fig. 10.

For a better understanding of the embodiments of the present application, the side-by-side feedback channels relevant to the present application are described.

In NR-V2X, a side-by-side feedback channel is introduced for improved reliability. For example, for unicast transmission, the transmitting end terminal sends side line data (including PSCCH and PSSCH) to the receiving end terminal, and the receiving end terminal sends hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ) feedback information (including Acknowledgement (ACK) or negative Acknowledgement (Negative Acknowledgement, NACK)) to the transmitting end terminal, and the transmitting end terminal determines whether retransmission is required according to the feedback information of the receiving end terminal. Wherein the HARQ feedback information is carried in a sidelink feedback channel, e.g. PSFCH. As shown in fig. 11.

The side feedback can be activated or deactivated through the pre-configuration information, the network configuration information or the sending terminal, if the side feedback is activated, the receiving terminal receives the side data sent by the sending terminal, and feeds back HARQ ACK or NACK to the sending terminal according to the detection result, and the sending terminal decides to send retransmission data or new data according to the feedback information of the receiving terminal; if the sidestream feedback is deactivated, the receiving end terminal does not need to send feedback information, and the transmitting end terminal typically sends data in a blind retransmission manner, for example, the transmitting end terminal repeatedly sends K times for each sidestream data, instead of deciding whether to need to send retransmission data according to the feedback information of the receiving end terminal.

To facilitate a better understanding of the embodiments of the present application, the format of the side-by-side feedback channel relevant to the present application is described.

In NR-V2X, a sidelink feedback channel PSFCH is introduced, which carries only 1 bit of HARQ-ACK information, occupies 2 time domain symbols in the time domain (the second symbol carries sidelink feedback information, the data on the first symbol is a duplicate of the data on the second symbol, but the symbol is used as AGC), and occupies 1 PRB in the frequency domain. In one slot, the structures of PSFCH and PSSCH/PSCCH are as shown in fig. 12 (or (b) of fig. 10), and the positions of the time domain symbols occupied by PSFCH, PSCCH, and PSSCH in one slot are schematically shown in fig. 12. In one slot, the last symbol is used as GP, the second last symbol is used for PSFCH transmission, the third last symbol is the same as the data of the PSFCH symbol, used as AGC, the fourth last symbol is also used as GP, the first symbol in the slot is used as AGC, the data on this symbol is the same as the data on the second time domain symbol in the slot, the PSCCH occupies 3 time domain symbols, and the remaining symbols are available for PSSCH transmission.

For better understanding of the embodiments of the present application, the resources of the sidelink feedback channel related to the present application are described.

In order to reduce the overhead of the PSFCH channel, one slot defined in every N slots includes the PSFCH transmission resource, i.e. the period of the side feedback resource is N slots, where n=1, 2, 4, the parameter N is preconfigured or network configured, and a schematic diagram of n=4 is shown in fig. 13. Wherein, the PSSCH transmitted in slots 2, 3, 4, 5 is transmitted in slot 7, so that slots {2, 3, 4, 5} can be regarded as a set of slots, and the PSSCH transmitted in the set of slots has its corresponding PSFCH in the same slot.

The resources of the sidelink feedback channel may be determined according to the time slot in which the sidelink data PSSCH is located and the starting position of the occupied sub-band, as shown in fig. 14: wherein n=4, the PSSCHs transmitted in the same subband starting position in different time slots respectively correspond to different PSFCH resources in the feedback time slot.

For a better understanding of the embodiments of the present application, side-row multicarrier is described with respect to the present application.

To improve throughput of the sidelink transmission system, multicarrier transmission may be supported on the sidelink link. In the internet of vehicles system, a multi-carrier transmission scheme is introduced, and data of a terminal can be transmitted on one or more carriers, so that the problem of carrier selection is solved, and one mode is that the terminal selects the carrier with the lowest CBR for data transmission according to the channel occupancy rate (channel busy ratio, CBR) of each carrier. CBR reflects the channel occupancy in the past 100ms or 100 slots, with lower CBR indicating lower system resource occupancy and more available resources; the higher CBR means that the higher the system resource occupancy, the more congested, the more likely transmission collisions and interference will occur.

If side-line multi-carrier transmission is introduced in an NR side-line (SL) system, how to perform carrier selection is a problem to be solved.

Based on the above problems, the present application proposes a scheme for selecting side-row carriers, so as to implement side-row multi-carrier transmission.

The technical scheme of the present application is described in detail below through specific embodiments.

Fig. 15 is a schematic interaction flow diagram of a method 200 of wireless communication according to an embodiment of the present application, as shown in fig. 15, the method 200 of wireless communication may include at least some of the following:

s210, the second terminal equipment sends first information to the first terminal equipment; wherein the first information includes at least one of: the number of simultaneously transmitted carriers supported by the second terminal device, the number of simultaneously received carriers supported by the second terminal device, a frequency band combination supported by the second terminal device, a carrier combination supported by the second terminal device, whether the second terminal device supports simultaneous transmission on carriers of different frequency bands, whether the second terminal device supports simultaneous reception on carriers of different frequency bands, whether the second terminal device supports simultaneous transmission on non-adjacent carriers, and whether the second terminal device supports simultaneous reception on non-adjacent carriers;

S220, the first terminal equipment receives the first information sent by the second terminal equipment;

s230, the first terminal equipment selects at least one carrier according to the first information; wherein the at least one carrier is configured to send sidestream information to the second terminal device.

In this embodiment of the present application, the content included in the first information may be terminal capability information of the second terminal device, or the first information is included in the terminal capability information of the second terminal device, that is, the first terminal device may select a carrier for sidestream transmission based on the terminal capability information of the second terminal device, so as to implement sidestream multi-carrier transmission.

In some embodiments, the Band combination (Band combination) includes, but is not limited to, at least one of:

E-UTRA and NR, NR and NR.

In some embodiments, the carrier combination includes, but is not limited to, at least one of:

inter-band (inter-band) carrier combining, intra-band (intra-band) carrier combining.

In some embodiments, the first terminal device may be a transmitting terminal and the second terminal device may be a receiving terminal.

In some embodiments, terminal capability information may be interacted between the sender terminal and the receiver terminal. The terminal capability information may include, but is not limited to, at least one of:

Number of simultaneously transmitted carriers supported: namely the number of carriers which are transmitted by the terminal in a lateral direction at the same time;

number of simultaneous received carriers supported: namely the number of carriers which are simultaneously received by the terminal in a sideways way;

supported frequency band combination: a combination of frequency bands including EUTRA and NR, and a combination of NR and NR frequency bands;

supported carrier combination: carrier combinations including inter-band (inter-band) and/or intra-band (intra-band);

whether simultaneous transmission on carriers of different frequency bands is supported or not;

whether simultaneous reception on carriers of different frequency bands is supported;

whether simultaneous transmission on non-adjacent carriers is supported;

whether simultaneous reception on non-adjacent carriers is supported.

It should be understood that the frequency band combination supported by the terminal may include a frequency band combination supported by the terminal for performing side-line reception, or may include a frequency band combination supported by the terminal for performing side-line transmission.

It should be understood that the carrier combination supported by the terminal may include a carrier combination supported by the terminal for performing side-line reception, or may include a carrier combination supported by the terminal for performing side-line transmission.

In some embodiments, the first information is carried by PC 5-radio resource control (Radio Resource Control, RRC) signaling. For example, the first information may occupy one or more elements in PC5-RRC signaling, or the first information may occupy one or more fields in PC5-RRC signaling.

In some embodiments, the first information is carried by a medium access control element (Media Access Control Control Element, MAC CE). For example, the first information may occupy one or more elements in the MAC CE, or the first information may occupy one or more fields in the MAC CE.

In some embodiments, the first terminal device sends second information to the second terminal device before the first terminal device receives the first information sent by the second terminal device; the second information is used for requesting content included in the first information.

In some embodiments, the first information is carried by a lateral terminal capability information (UECapabilityInformationSidelink) and/or the second information is carried by a lateral terminal capability query (uecapabilityendersidelink).

In some embodiments, the second information is carried over PC5-RRC signaling. For example, the second information may occupy one or more elements in PC5-RRC signaling, or the second information may occupy one or more fields in PC5-RRC signaling.

In some embodiments, the second information is carried by the MAC CE. For example, the second information may occupy one or more elements in the MAC CE, or the second information may occupy one or more fields in the MAC CE.

That is, in the embodiment of the present application, the second terminal device may autonomously send the first information to the first terminal device; the second terminal device may also send the first information to the first terminal device based on the request of the first terminal device.

Specifically, for example, as shown in fig. 16, the second terminal device autonomously transmits its own terminal capability information to the first terminal device through a lateral terminal capability information (UECapabilityInformationSidelink).

Specifically, for example, as shown in fig. 17, the second terminal device sends its own terminal capability information to the first terminal device through the lateral terminal capability information (UECapabilityInformationSidelink) under the lateral terminal capability query (uecapabilityendersidelnk) request sent by the first terminal device.

In some embodiments, the sidestream information includes, but is not limited to, at least one of:

Side row control information, side row reference signals and side row data.

For example, the sidelink information is sidelink control information (Sidelink Control Information, SCI) which may be transmitted on the PSCCH or which is a second order SCI carried over the resources of the PSSCH.

As another example, the side-row information is a side-row reference signal that may be transmitted on a PSCCH or PSSCH, the side-row reference signal including any one of: demodulation reference signals (Demodulation Reference Signal, DMRS), channel state information reference information (Channel State Information Reference Signal, CSI-RS), phase tracking reference signals (Phase Tracking Reference Signal, PT-RS).

For another example, the sidelink information is sidelink data, which may be transmitted on the PSSCH.

In some embodiments, if the sidestream information sent on the at least one carrier activates sidestream feedback, sidestream feedback information corresponding to sidestream information on the at least one carrier is located in the same time slot or the same time domain symbol. For example, the sideline information is sideline data transmitted on the PSSCH, and the sideline feedback information corresponding to the sideline information is transmitted on the PSFCH. The sidelink feedback information is, for example, HARQ feedback information (including ACK or NACK).

It should be noted that, the sidestream information sent by the first terminal device on the at least one carrier may be located in the same time slot, or may be located in different time slots, but sidestream feedback information corresponding to the sidestream information is located in the same time slot.

In some embodiments, if the first information includes at least the number of simultaneously transmitted carriers supported by the second terminal device, the number of the at least one carrier is less than or equal to the number of simultaneously transmitted carriers supported by the second terminal device.

That is, when the first terminal device knows the number of simultaneously transmitted carriers supported by the second terminal device, the first terminal device may perform carrier selection according to the number of simultaneously transmitted carriers supported by the second terminal device. Specifically, for example, the number of the at least one carrier selected by the first terminal device is less than or equal to the number of simultaneously transmitted carriers supported by the second terminal device.

For example, when the first terminal device sends the PSSCH to the second terminal device through the selected carrier, and activates the sidelink feedback of the sidelink information sent on the PSSCH, the first terminal device expects the second terminal device to send the PSFCH on the selected carrier respectively, and the number of the carriers supported by the second terminal device and sent simultaneously is N, the first terminal device can only select N carriers or less to send the PSSCH, so as to ensure that the maximum sending capability of the second terminal device is not exceeded when the second terminal device sends the PSFCH.

Specifically, for example, as shown in fig. 18, the system configures 4 carriers, and each carrier is configured with PSFCH resources, the PSFCH resources configured on the 4 carriers are the same, and the minimum time interval between the PSSCH and its associated PSFCH is 2 slots, so the PSSCH transmitted on slot 2/3/4/5, and its corresponding PSFCH is located in slot 7. The terminal capability information is interacted between the first terminal equipment and the second terminal equipment through PC5-RRC signaling, the first terminal equipment acquires that the maximum number of simultaneously transmitted carriers supported by the second terminal equipment is 2, so that for PSCCH/PSSCH to be transmitted, if side feedback is activated, the number of the selected carriers cannot exceed 2 when the first terminal equipment selects the carriers, otherwise, the second terminal equipment is possibly caused to exceed the maximum number of simultaneously transmitted carriers supported by the second terminal equipment when PSFCH is fed back, and therefore PSFCH cannot be fed back on some carriers. For example, if the first terminal device selects carrier 0/1/2 and the selected time slots are time slots 2/3/4, respectively, this results in that the second terminal device needs to transmit PSFCH from 3 carriers simultaneously in time slot 7, which exceeds the maximum number of simultaneous transmissions that the second terminal device can support.

In some embodiments, if the first information includes at least the number of simultaneously received carriers supported by the second terminal device, the number of the at least one carrier is less than or equal to the number of simultaneously received carriers supported by the second terminal device. That is, when the first terminal device knows the number of simultaneously received carriers supported by the second terminal device, the first terminal device may perform carrier selection according to the number of simultaneously received carriers supported by the second terminal device. Specifically, for example, the number of the at least one carrier selected by the first terminal device is less than or equal to the number of simultaneously received carriers supported by the second terminal device.

For example, when the first terminal device knows that the number of simultaneously received carriers supported by the second terminal device is 2 at the maximum, the first terminal device cannot select more than 2 carriers to transmit simultaneously when selecting the carriers, otherwise, the second terminal device cannot receive data on part of the carriers.

In some embodiments, if the first information includes at least a combination of frequency bands supported by the second terminal device; the first terminal device selects the at least one carrier from carriers in the frequency band combination supported by the second terminal device. That is, in S230, the first terminal device performs carrier selection according to the frequency band combination supported by the second terminal device, and cannot select carriers in other frequency band combinations and transmit at the same time.

For example, as shown in fig. 19, the system configures 3 frequency bands, namely, a frequency band 1, a frequency band 2, and a frequency band 3, wherein the frequency band 1 includes a carrier 0 and a carrier 1, the frequency band 2 includes a carrier 2, and the frequency band 3 includes a carrier 3. The second terminal device only supports the combination of the frequency band 1 and the frequency band 2, so that the first terminal device can only select the carriers in the frequency band 1 and the frequency band 2 when selecting the carriers, for example, the first terminal device selects the carrier 0 and the carrier 2 to perform side transmission, or the first terminal device selects the carrier 1 and the carrier 2 to perform side transmission, but the first terminal device cannot select the carriers in the frequency band 1 and the frequency band 3 at the same time, or the first terminal device cannot select the carriers in the frequency band 2 and the frequency band 3 at the same time.

In some embodiments, in the process that the first terminal device performs carrier selection according to the frequency band combination supported by the second terminal device, the number of carriers that are simultaneously received and supported by the second terminal device may be combined, or the number of carriers that are simultaneously transmitted and supported by the second terminal device may be combined, which is not described herein.

In some embodiments, if the first information includes at least that the second terminal device does not support simultaneous transmission on carriers of different frequency bands, the first terminal device selects the at least one carrier within the same frequency band. Or if the first information at least comprises that the second terminal equipment does not support simultaneous reception on carriers of different frequency bands; the first terminal device selects the at least one carrier wave within the same frequency band. That is, in S230, the first terminal device can only select carriers in the same frequency band, but cannot simultaneously select carriers in different frequency bands for transmission.

Specifically, for example, as shown in fig. 20, the sidestream system supports 2 frequency bands, i.e., frequency band 1 and frequency band 2; each frequency band comprises 2 carriers, the carriers included in the frequency band 1 are respectively carrier 0 and carrier 1, and the carriers included in the frequency band 2 are respectively carrier 2 and carrier 3; if the second terminal device does not support simultaneous transmission in different frequency bands, the first terminal device can only select 1 carrier in the frequency band when selecting the carrier, for example, the first terminal device selects carrier 0 in frequency band 1, or the first terminal device selects carrier 1 in frequency band 1, or the first terminal device selects carrier 0 and carrier 1 in frequency band 1, or the first terminal device selects carrier 2 in frequency band 2, or the first terminal device selects carrier 3 in frequency band 2, or the first terminal device selects carrier 2 and carrier 3 in frequency band 2. At this time, the PSSCH sent by the first terminal device on at least one carrier may activate sidestream feedback, or may deactivate sidestream feedback, that is, there is no limitation to activating or deactivating sidestream feedback. The first terminal device cannot select carriers in two frequency bands simultaneously, e.g. simultaneously selecting carrier 1 in frequency band 1 and carrier 2 in frequency band 2.

In some embodiments, in the process that the first terminal device performs carrier selection in the same frequency band, the number of carriers that are simultaneously received and supported by the second terminal device may be combined, or the number of carriers that are simultaneously transmitted and supported by the second terminal device may be combined, which is not described herein.

In some embodiments, if the first information includes at least a carrier combination supported by the second terminal device; the first terminal device selects the at least one carrier from the carrier combinations supported by the second terminal device. That is, in S230, the first terminal device performs carrier selection according to the carrier combination supported by the second terminal device, and cannot select carriers in other carrier combinations and transmit at the same time.

Specifically, for example, as shown in fig. 21, the system configures 4 carriers, namely carrier 0, carrier 1, carrier 2, and carrier 3. The 4 carriers may belong to the same frequency band or different frequency bands, which is not limited in this embodiment. The second terminal device supports the combination of carrier 0 and carrier 1 and the combination of carrier 2 and carrier 3, so that the first terminal device can only select carrier 0 and carrier 1 for data transmission when selecting carrier, or the first terminal device can select carrier 2 and carrier 3 for data transmission. And other carrier combinations cannot be selected for data transmission, for example, the first terminal device cannot select a combination of carrier 1 and carrier 2, or the first terminal device cannot select a combination of carrier 0 and carrier 2, or the first terminal device cannot select a combination of carrier 1 and carrier 3, or the first terminal device cannot select a combination of carrier 0 and carrier 3. Of course, the first terminal device cannot select any combination of 3 or 4 carriers for sidestream transmission.

In some embodiments, in the process that the first terminal device performs carrier selection in the carrier combination supported by the second terminal device, the number of carriers that are simultaneously received and supported by the second terminal device may be combined, or the number of carriers that are simultaneously transmitted and supported by the second terminal device may be combined, which is not described herein.

In some embodiments, if the first information includes at least that the second terminal device does not support simultaneous transmission on non-adjacent carriers, the at least one carrier does not include the non-adjacent carriers. Or if the first information at least includes that the second terminal equipment does not support simultaneous reception on non-adjacent carriers, the at least one carrier does not include the non-adjacent carriers. That is, in S230, the first terminal device can only select adjacent carriers, but cannot select non-adjacent carriers at the same time for transmission.

Specifically, for example, as shown in fig. 21, the system configures 4 carriers, namely carrier 0, carrier 1, carrier 2, and carrier 3. The 4 carriers are 4 adjacent carriers belonging to the same frequency band. If the second terminal device does not support simultaneous transmission on non-adjacent carriers, the first terminal device can only select adjacent carriers when selecting carriers, for example, select any combination of 2 adjacent carriers: for example, the first terminal device selects carrier 0 and carrier 1, or the first terminal device selects carrier 1 and carrier 2, or the first terminal device selects carrier 2 and carrier 3. The first terminal device may also select any adjacent combination of 3 carriers: for example, the first terminal device selects carrier 0, carrier 1 and carrier 2, or the first terminal device selects carrier 1, carrier 2 and carrier 3. The first terminal device may also select all 4 carriers; and the first terminal device cannot select non-adjacent carriers at the same time, for example, the first terminal device cannot select carrier 1 and carrier 3 at the same time, or the first terminal device cannot select carrier 2 and carrier 4 at the same time. In addition, when the first terminal device transmits the PSSCH using the selected plurality of adjacent carriers, side feedback needs to be simultaneously activated for some of the plurality of adjacent carriers. For example, when the first terminal device selects carrier 0, carrier 1 and carrier 2 to transmit the PSSCH, the first terminal device may activate the side feedback of the PSSCH on 3 carriers at the same time, or the first terminal device may deactivate the side feedback of the PSSCH on 3 carriers at the same time. Or the first terminal equipment activates side feedback to PSSCH on carrier 0 and carrier 1, and deactivates side feedback to PSSCH on carrier 2. Or the first terminal equipment deactivates side feedback to PSSCH on carrier 0 and activates side feedback to PSSCH on carrier 1 and carrier 2. Or the first terminal equipment activates side feedback to the PSSCH on the carrier 0, and deactivates side feedback to the PSSCH on the carrier 1 and the carrier 2. Or the first terminal equipment deactivates side feedback to PSSCH on carrier 0 and carrier 1 and activates side feedback to PSSCH on carrier 2. By the method, the second terminal equipment can be ensured to transmit on adjacent carriers when transmitting PSFCH.

In some embodiments, the sidelink information transmitted on some or all of the at least one carrier activates sidelink feedback.

In some embodiments, the first terminal device performs resource selection on the at least one carrier according to the first information.

In some embodiments, if the first information includes at least the number of simultaneously transmitted carriers supported by the second terminal device, and the number of the at least one carrier is greater than the number of simultaneously transmitted carriers supported by the second terminal device; and the first terminal equipment performs resource selection on the at least one carrier according to the number of the carrier which is supported by the second terminal equipment and is transmitted simultaneously.

In some embodiments, if the sidelink information sent on all carriers in the at least one carrier activates sidelink feedback, the number of carriers corresponding to the sidelink feedback information located in the same time slot and corresponding to the sidelink information sent on the selected resource on the at least one carrier does not exceed the number of simultaneously sent carriers supported by the second terminal device.

Specifically, for example, when the first terminal device sends the PSSCH to the second terminal device through the selected carrier, and activates sidestream feedback of sidestream information sent on the PSSCH, when determining transmission resources of the PSSCH, it needs to consider the number of carriers of the PSFCH that the second terminal device sends the PSFCH simultaneously, so that the number of carriers of the PSFCH that the second terminal device sends the PSFCH simultaneously does not exceed its maximum sending capability.

For example, as shown in fig. 18, if the maximum number of simultaneous transmission carriers supported by the second terminal device is 2, when the first terminal device transmits PSCCH/PSSCH, if the number of selected transmission carriers does not exceed 2, there is no limitation on resource selection of the first terminal device on each carrier; if the number of selected transmission carriers exceeds 2, in order to avoid that the number of carriers for simultaneously transmitting PSFCH by the second terminal device exceeds 2, the resource selection of the first terminal device needs to be limited. For example, the first terminal device selects 3 carriers for transmitting PSCCH/PSSCH, corresponding to carrier 0, carrier 1, carrier 2; the first terminal device selects the transmission resources on the time slots 2/3 on the carrier 0/1 respectively, when the first terminal device selects the transmission resources on the carrier 2, the first terminal device cannot select the transmission resources on the time slots 2, 3, 4 or 5, otherwise, the second terminal device needs to send PSFCH on 3 carriers at the same time in the time slot 7, and the capability of the second terminal device is exceeded. Therefore, the first terminal device needs to select transmission resources on the carrier 2 in other time slots except for the time slot 2, the time slot 3, the time slot 4 and the time slot 5, for example, select transmission resources on the time slot 6, and its corresponding PSFCH is located in the time slot 11, so that the second terminal device feeds back the feedback information of the PSSCH transmitted on the carrier 0 and the carrier 1 in the time slot 7, and feeds back the feedback information of the PSSCH transmitted on the carrier 2 in the time slot 11.

In some embodiments, the first terminal device determines whether the sidestream information sent on the at least one carrier activates sidestream feedback based on the first information. For example, when the first terminal device transmits the PSSCH on at least one carrier, it is determined whether to activate sidestream feedback according to the number of simultaneously transmitted carriers supported by the second terminal device.

In some embodiments, if the first information includes at least the number of simultaneously transmitted carriers supported by the second terminal device, and the number of the at least one carrier is greater than the number of simultaneously transmitted carriers supported by the second terminal device; the first terminal device determines whether the sidestream information transmitted on the at least one carrier activates sidestream feedback according to the number of simultaneously transmitted carriers supported by the second terminal device. In some embodiments, the first terminal device determines that sidestream information sent on M carriers of the at least one carrier activates sidestream feedback; m is a positive integer, and M is less than or equal to the number of simultaneously transmitted carriers supported by the second terminal device.

For example, as shown in fig. 18, if the maximum number of simultaneous transmission carriers supported by the second terminal device is 2, when the first terminal device transmits PSCCH/PSSCH, if the number of selected transmission carriers does not exceed 2, there is no limitation on resource selection of the first terminal device on each carrier; if the number of selected transmission carriers exceeds 2, in order to avoid that the second terminal device simultaneously transmits more than 2 carriers of the PSFCH, it is necessary to determine whether to activate sidestream feedback. For example, the first terminal device selects 3 carriers for transmitting PSCCH/PSSCH, corresponding to carrier 0, carrier 1, carrier 2; the first terminal device selects the transmission resources on the time slot 2, the time slot 3 and the time slot 4 on the carrier 0, the carrier 1 and the carrier 2 respectively, so that the first terminal device can only activate side feedback for PSSCH on at most 2 carriers, otherwise, the second terminal device can send PSFCH on 3 carriers at the same time in the time slot 7, and the capability of the second terminal device is exceeded.

In some embodiments, if the first information includes at least that the second terminal device does not support simultaneous transmission on carriers of different frequency bands, and the first terminal device selects carriers in multiple frequency bands; the first terminal device activates only sidestream feedback of sidestream information transmitted on carriers within one of the plurality of frequency bands.

Specifically, for example, when the first terminal device selects carriers in different frequency bands, the side feedback is activated only by the PSSCH transmitted in one frequency band, and the side feedback needs to be deactivated for the PSSCH transmitted in other frequency bands. As shown in fig. 20, if the second terminal device does not support simultaneous transmission in different frequency bands, when the first terminal device performs resource selection, if carriers in different frequency bands are selected, for example, carrier 1 in the frequency band 1 and carrier 2 in the frequency band 2 are selected simultaneously, the first terminal device can only perform side feedback for PSSCH activation of carrier 1, side feedback for PSSCH deactivation of carrier 2, or vice versa, side feedback for PSSCH deactivation of carrier 1, and side feedback for PSSCH activation of carrier 2; thereby ensuring that the second terminal device does not transmit PSFCH on carrier 1 and carrier 2 simultaneously.

In some embodiments, if the first information includes at least that the second terminal device does not support simultaneous transmission on non-adjacent carriers, and the first terminal device selects a plurality of non-adjacent carriers; the first terminal device activates only sidestream feedback of sidestream information transmitted on an adjacent carrier of the plurality of carriers.

Specifically, for example, when the first terminal device selects a plurality of non-adjacent carriers, only PSSCH transmitted on adjacent carriers in the plurality of carriers activates side feedback, and PSSCH transmitted on other carriers needs to deactivate side feedback. As shown in fig. 21, if the second terminal device does not support simultaneous transmission in different frequency bands, when the first terminal device performs resource selection, if non-adjacent carriers are selected, if carrier 1 and carrier 3 are selected simultaneously, the first terminal device can only perform active side feedback on the PSSCH of carrier 1, perform inactive side feedback on the PSSCH of carrier 3, or, conversely, perform active side feedback on the PSSCH of carrier 3; thereby ensuring that the second terminal device does not transmit PSFCH on carrier 1 and carrier 3 simultaneously. For another example, the first terminal device selects carrier 0, carrier 1 and carrier 3 at the same time, and the first terminal device can only perform active side feedback on the PSSCH of carrier 0 and/or carrier 1, perform inactive side feedback on the PSSCH of carrier 3, or perform active side feedback on the PSSCH of carrier 3 and perform active side feedback on the PSSCH of carrier 0 and carrier 1; thereby ensuring that the second terminal device does not transmit PSFCH on non-adjacent carriers at the same time.

Therefore, in the embodiment of the application, the first terminal device selects at least one carrier for sending the sidestream information to the second terminal device according to the first information. That is, the first terminal device may select a carrier for sidestream transmission based on the terminal capability of the second terminal device, thereby implementing sidestream multi-carrier transmission.

Fig. 22 is a schematic interaction flow diagram of a method 300 of wireless communication according to an embodiment of the present application, as shown in fig. 22, the method 300 of wireless communication may include at least some of the following:

s310, the second terminal equipment sends first indication information to the first terminal equipment; the first indication information is used for indicating the side transmission carrier selected by the second terminal equipment, and the first indication information is used for the first terminal equipment to select the carrier used for transmitting the side transmission information to the second terminal equipment;

s320, the first terminal equipment receives the first indication information sent by the second terminal equipment;

s330, the first terminal equipment selects a carrier wave for sending side line information to the second terminal equipment according to the first indication information.

In some embodiments, the side transmission carriers selected by the second terminal device belong to different frequency bands, or the side transmission carriers selected by the second terminal device belong to the same frequency band.

In some embodiments, the sidestream information includes at least one of:

side row control information, side row reference signals and side row data.

For example, the sidelink information is sidelink control information, which may be transmitted on the PSCCH, or the sidelink control information is a second order SCI, carried over resources of the PSSCH.

As another example, the side-row information is a side-row reference signal that may be transmitted on a PSCCH or PSSCH, the side-row reference signal including any one of: demodulation reference signals (DMRS), channel state information reference information (CSI-RS), phase tracking reference signals (PT-RS).

In some embodiments, the first indication information is carried over PC5-RRC signaling. For example, the first indication information may occupy one or more elements in PC5-RRC signaling, or the first indication information may occupy one or more fields in PC5-RRC signaling.

In some embodiments, the first indication information is carried by the MAC CE. For example, the first indication information may occupy one or more elements in the MAC CE, or the first indication information may occupy one or more fields in the MAC CE.

For example, the sidestream system supports 4 carriers, namely carrier 0, carrier 1, carrier 2, and carrier 3. The 4 carriers may belong to the same frequency band or may belong to different frequency bands, which is not limited in this embodiment. The first terminal equipment receives first indication information sent by the second terminal equipment, the first indication information indicates that the second terminal equipment selects carrier 0 and carrier 1 to perform side transmission, and when the first terminal equipment selects the carrier, the first terminal equipment can select carrier 0 to perform side transmission, or can select carrier 1 to perform side transmission, or can select carrier 0 and carrier 1 to perform side transmission.

In some embodiments, the first terminal device performs carrier selection according to the detected carrier used by the second terminal device. For example, the first terminal device detects the sidestream data sent by the second terminal device on the carrier 0 and the carrier 1, and does not detect the sidestream data sent by the second terminal device on the carrier 2 and the carrier 3, so the first terminal device may determine that the sidestream sending carrier selected by the second terminal device includes the carrier 0 and the carrier 1, and when the first terminal device performs carrier selection, may select the carrier 0 to perform sidestream sending, or may select the carrier 1 to perform sidestream sending, or may select the carrier 0 and the carrier 1 to perform sidestream sending. Otherwise, if the first terminal device selects other carriers to perform data transmission, the second terminal device may be caused to perform frequent carrier switching. For example, when the first terminal device selects carrier 2 and carrier 3 to transmit data, and activates sidelink feedback, when the second terminal device receives sidelink transmission on carrier 2 and carrier 3, PSFCH needs to be transmitted on carrier 2 and carrier 3, but when the second terminal device transmits PSCCH/PSSCH, it needs to switch to transmit on carrier 0 and carrier 1 again, which causes the second terminal device to transmit PSFCH and PSCCH/PSSCH using different carriers, and carrier switching frequently occurs.

Therefore, in the embodiment of the present application, the first terminal device selects the carrier for transmitting the sidestream information to the second terminal device according to the indication information for indicating the sidestream transmission carrier selected by the second terminal device. That is, the first terminal device may select a carrier for sidelink transmission based on the sidelink transmission carrier selected by the second terminal device, thereby implementing sidelink multi-carrier transmission.

The method embodiments of the present application are described in detail above with reference to fig. 15 to 22, and the apparatus embodiments of the present application are described in detail below with reference to fig. 23 to 26, it being understood that the apparatus embodiments and the method embodiments correspond to each other, and similar descriptions may refer to the method embodiments.

Fig. 23 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application. As shown in fig. 23, the terminal device 400 is a first terminal device, and the terminal device 400 includes:

a communication unit 410, configured to receive first information sent by the second terminal device; wherein the first information includes at least one of: the number of simultaneously transmitted carriers supported by the second terminal device, the number of simultaneously received carriers supported by the second terminal device, a frequency band combination supported by the second terminal device, a carrier combination supported by the second terminal device, whether the second terminal device supports simultaneous transmission on carriers of different frequency bands, whether the second terminal device supports simultaneous reception on carriers of different frequency bands, whether the second terminal device supports simultaneous transmission on non-adjacent carriers, and whether the second terminal device supports simultaneous reception on non-adjacent carriers;

A processing unit 420, configured to select at least one carrier according to the first information; wherein the at least one carrier is configured to send sidestream information to the second terminal device.

In some embodiments, if the sidelink information sent on the at least one carrier activates the sidelink feedback, the sidelink feedback information corresponding to the sidelink information on the at least one carrier is located in the same time slot or the same time domain symbol.

In some embodiments, if the first information includes at least the number of simultaneously received carriers supported by the second terminal device, the number of the at least one carrier is less than or equal to the number of simultaneously received carriers supported by the second terminal device.

In some embodiments, if the first information includes at least a combination of frequency bands supported by the second terminal device;

the processing unit 420 is specifically configured to: and selecting the at least one carrier from the carriers in the frequency band combination supported by the second terminal equipment.

In some embodiments, if the first information includes at least that the second terminal device does not support simultaneous transmission on carriers of different frequency bands, or if the first information includes at least that the second terminal device does not support simultaneous reception on carriers of different frequency bands;

the processing unit 420 is specifically configured to: the at least one carrier is selected within the same frequency band.

In some embodiments, if the first information includes at least a carrier combination supported by the second terminal device;

the processing unit 420 is specifically configured to: and selecting the at least one carrier from the carrier combination supported by the second terminal equipment.

In some embodiments, if the first information includes at least that the second terminal device does not support simultaneous transmission on non-adjacent carriers, or if the first information includes at least that the second terminal device does not support simultaneous reception on non-adjacent carriers, the at least one carrier does not include non-adjacent carriers.

In some embodiments, the processing unit 420 is further configured to perform resource selection on the at least one carrier according to the first information.

In some embodiments, if the first information includes at least the number of simultaneously transmitted carriers supported by the second terminal device, and the number of the at least one carrier is greater than the number of simultaneously transmitted carriers supported by the second terminal device;

the processing unit 420 is specifically configured to:

and selecting resources on the at least one carrier according to the number of the carriers which are supported by the second terminal equipment and transmitted simultaneously.

In some embodiments, the processing unit 420 is further configured to determine whether the sidestream information sent on the at least one carrier activates sidestream feedback based on the first information.

The processing unit 420 is specifically configured to:

and determining whether the sidestream information transmitted on the at least one carrier activates sidestream feedback according to the number of simultaneously transmitted carriers supported by the second terminal device.

In some embodiments, the processing unit 420 is specifically configured to:

determining sidestream information transmitted on M carriers of the at least one carrier to activate sidestream feedback; m is a positive integer, and M is less than or equal to the number of simultaneously transmitted carriers supported by the second terminal device.

In some embodiments, if the first information includes at least that the second terminal device does not support simultaneous transmission on carriers of different frequency bands, and the first terminal device selects carriers in multiple frequency bands;

the processing unit 420 is further configured to activate only sidestream feedback of sidestream information sent on carriers within one of the plurality of frequency bands.

In some embodiments, if the first information includes at least that the second terminal device does not support simultaneous transmission on non-adjacent carriers, and the first terminal device selects a plurality of non-adjacent carriers;

the processing unit 420 is further configured to activate only sidestream feedback of sidestream information sent on an adjacent carrier of the plurality of carriers.

In some embodiments, the sidestream information includes at least one of:

side row control information, side row reference signals and side row data.

For example, the sidelink information is a Sidelink Control Information (SCI), which may be transmitted on the PSCCH, or the sidelink control information is a second order SCI, carried over the resources of the PSSCH.

In some embodiments, the communication unit is further configured to send second information to the second terminal device before the first terminal device receives the first information sent by the second terminal device; the second information is used for requesting content included in the first information.

In some embodiments, the first information is carried by PC5-RRC signaling or by a medium access control element MAC CE; and/or the number of the groups of groups,

The second information is carried through PC5-RRC signaling or carried through MAC CE.

In some embodiments, the first information is carried by a lateral terminal capability information UECapabilityInformationSidelink, and/or the second information is carried by a lateral terminal capability query uecapabilityenquirysilink.

In some embodiments, the band combination includes at least one of:

frequency band combination of evolved universal radio access E-UTRA and new radio NR, frequency band combination of NR and NR.

In some embodiments, the carrier combination includes at least one of:

carrier combination between frequency bands and carrier combination within a frequency band.

In some embodiments, the communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip. The processing unit may be one or more processors.

It should be understood that the terminal device 400 according to the embodiment of the present application may correspond to the first terminal device in the embodiment of the method of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 400 are respectively for implementing the corresponding flow of the first terminal device in the method 200 shown in fig. 15, and are not repeated herein for brevity.

Fig. 24 shows a schematic block diagram of a terminal device 500 according to an embodiment of the present application. The terminal device 500 is a second terminal device, as shown in fig. 24, and the terminal device 500 includes:

a communication unit 510 configured to send first information to a first terminal device; wherein,

In some embodiments, if the first information includes at least a combination of frequency bands supported by the second terminal device, the at least one carrier belongs to the combination of frequency bands supported by the second terminal device.

In some embodiments, if the first information at least includes that the second terminal device does not support simultaneous transmission on carriers of different frequency bands, or if the first information at least includes that the second terminal device does not support simultaneous reception on carriers of different frequency bands, the at least one carrier belongs to the same frequency band.

In some embodiments, if the first information includes at least a carrier combination supported by the second terminal device, the at least one carrier belongs to the carrier combination supported by the second terminal device.

In some embodiments, the first information is further used for resource selection by the first terminal device on the at least one carrier.

In some embodiments, the first information includes at least a number of simultaneously transmitted carriers supported by the second terminal device, and the number of the at least one carrier is greater than the number of simultaneously transmitted carriers supported by the second terminal device.

In some embodiments, the first information is further for the first terminal device to determine whether the sidestream information sent on the at least one carrier activates sidestream feedback.

In some embodiments, sidestream information transmitted on M carriers of the at least one carrier activates sidestream feedback; m is a positive integer, and M is less than or equal to the number of simultaneously transmitted carriers supported by the second terminal device.

In some embodiments, if the first information includes at least that the second terminal device does not support simultaneous transmission on carriers of different frequency bands, and the first terminal device selects carriers in a plurality of frequency bands, side information transmitted on carriers in one of the plurality of frequency bands activates side feedback.

In some embodiments, if the first information includes at least that the second terminal device does not support simultaneous transmission on non-adjacent carriers, and the first terminal device selects a plurality of non-adjacent carriers, side information transmitted on adjacent carriers in the plurality of carriers activates side feedback.

In some embodiments, the sidestream information includes at least one of:

side row control information, side row reference signals and side row data.

In some embodiments, the communication unit is further configured to receive second information sent by the first terminal device before the second terminal device sends the first information to the first terminal device; the second information is used for requesting content included in the first information.

In some embodiments, the first information is carried by a PC 5-radio resource control, RRC, signaling, or by a medium access control, MAC CE, element; and/or the number of the groups of groups,

In some embodiments, the band combination includes at least one of:

In some embodiments, the carrier combination includes at least one of:

In some embodiments, the communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip.

It should be understood that the terminal device 500 according to the embodiment of the present application may correspond to the second terminal device in the embodiment of the method of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 500 are respectively for implementing the corresponding flow of the second terminal device in the method 200 shown in fig. 15, which is not repeated herein for brevity.

Fig. 25 shows a schematic block diagram of a terminal device 600 according to an embodiment of the present application. As shown in fig. 25, the terminal device 600 is a first terminal device, and the terminal device 600 includes:

A communication unit 610, configured to receive first indication information sent by the second terminal device; the first indication information is used for indicating the side transmission carrier selected by the second terminal equipment;

and a processing unit 620, configured to select a carrier for sending side line information to the second terminal device according to the first indication information.

In some embodiments, the sidestream information includes at least one of:

side row control information, side row reference signals and side row data.

In some embodiments, the first indication information is carried through PC 5-radio resource control, RRC, signaling, or through a medium access control, MAC CE, element.

In some embodiments, the processing unit 620 is configured to perform carrier selection according to the detected carrier used by the second terminal device.

It should be understood that the terminal device 600 according to the embodiment of the present application may correspond to the first terminal device in the embodiment of the method of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 600 are respectively for implementing the corresponding flow of the first terminal device in the method 300 shown in fig. 22, and are not repeated herein for brevity.

Fig. 26 shows a schematic block diagram of a terminal device 700 according to an embodiment of the present application. The terminal device 700 is a second terminal device, as shown in fig. 26, and the terminal device 700 includes:

a communication unit 710, configured to send first indication information to a first terminal device; the first indication information is used for indicating the side transmission carrier selected by the second terminal equipment, and the first indication information is used for the first terminal equipment to select the carrier used for transmitting the side transmission information to the second terminal equipment.

In some embodiments, the sidestream information includes at least one of:

side row control information, side row reference signals and side row data.

It should be understood that the terminal device 700 according to the embodiment of the present application may correspond to the second terminal device in the embodiment of the method of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 700 are respectively for implementing the corresponding flow of the second terminal device in the method 300 shown in fig. 22, and are not repeated herein for brevity.

Fig. 27 is a schematic structural diagram of a communication device 800 provided in an embodiment of the present application. The communication device 800 shown in fig. 27 comprises a processor 810, from which the processor 810 may call and run a computer program to implement the method in the embodiments of the present application.

In some embodiments, as shown in fig. 27, the communication device 800 may also include a memory 820. Wherein the processor 810 may call and run a computer program from the memory 820 to implement the methods in embodiments of the present application.

Wherein the memory 820 may be a separate device from the processor 810 or may be integrated into the processor 810.

In some embodiments, as shown in fig. 27, the communication device 800 may further include a transceiver 830, and the processor 810 may control the transceiver 830 to communicate with other devices, and in particular, may transmit information or data to other devices, or receive information or data transmitted by other devices.

Among other things, transceiver 830 may include a transmitter and a receiver. Transceiver 830 may further include antennas, the number of which may be one or more.

In some embodiments, the communication device 800 may be specifically a first terminal device in the embodiments of the present application, and the communication device 800 may implement a corresponding flow implemented by the first terminal device in each method in the embodiments of the present application, which is not described herein for brevity.

In some embodiments, the communication device 800 may be specifically a second terminal device in the embodiments of the present application, and the communication device 800 may implement a corresponding flow implemented by the second terminal device in each method in the embodiments of the present application, which is not described herein for brevity.

Fig. 28 is a schematic structural view of an apparatus of an embodiment of the present application. The apparatus 900 shown in fig. 28 includes a processor 910, and the processor 910 may call and execute a computer program from a memory to implement the methods in the embodiments of the present application.

In some embodiments, as shown in fig. 28, apparatus 900 may further comprise a memory 920. Wherein the processor 910 may invoke and run a computer program from the memory 920 to implement the methods in the embodiments of the present application.

Wherein the memory 920 may be a separate device from the processor 910 or may be integrated in the processor 910.

In some embodiments, the apparatus 900 may also include an input interface 930. The processor 910 may control the input interface 930 to communicate with other devices or chips, and in particular, may acquire information or data sent by the other devices or chips.

In some embodiments, the apparatus 900 may further include an output interface 940. Wherein the processor 910 may control the output interface 940 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.

In some embodiments, the apparatus may be applied to the first terminal device in the embodiments of the present application, and the apparatus may implement a corresponding flow implemented by the first terminal device in each method in the embodiments of the present application, which is not described herein for brevity.

In some embodiments, the apparatus may be applied to the second terminal device in the embodiments of the present application, and the apparatus may implement a corresponding flow implemented by the second terminal device in each method in the embodiments of the present application, which is not described herein for brevity.

In some embodiments, the device mentioned in the embodiments of the present application may also be a chip. For example, a system-on-chip or a system-on-chip, etc.

Fig. 29 is a schematic block diagram of a communication system 1000 provided in an embodiment of the present application. As shown in fig. 29, the communication system 1000 includes a first terminal device 1010 and a second terminal device 1020.

The first terminal device 1010 may be used to implement the corresponding function implemented by the first terminal device in the above method, and the second terminal device 1020 may be used to implement the corresponding function implemented by the second terminal device in the above method, which are not described herein for brevity.

It should be appreciated that the processor of an embodiment of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or 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) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memory is exemplary but not limiting, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

Embodiments of the present application also provide a computer-readable storage medium for storing a computer program.

In some embodiments, the computer readable storage medium may be applied to the first terminal device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the first terminal device in each method of the embodiments of the present application, which is not described herein for brevity.

In some embodiments, the computer readable storage medium may be applied to the second terminal device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the second terminal device in each method of the embodiments of the present application, which is not described herein for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

In some embodiments, the computer program product may be applied to the first terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding procedure implemented by the first terminal device in the methods in the embodiments of the present application, which is not described herein for brevity.

In some embodiments, the computer program product may be applied to the second terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding flow implemented by the second terminal device in the methods in the embodiments of the present application, which is not described herein for brevity.

The embodiment of the application also provides a computer program.

In some embodiments, the computer program may be applied to the first terminal device in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the first terminal device in each method in the embodiments of the present application, which is not described herein for brevity.

In some embodiments, the computer program may be applied to the second terminal device in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the second terminal device in each method in the embodiments of the present application, which is not described herein for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

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

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

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. For such understanding, the technical solutions of the present application may be embodied in essence or in a part contributing to the prior art or in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

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

Claims

A method of wireless communication, comprising:

the first terminal equipment receives first information sent by the second terminal equipment; wherein the first information includes at least one of: the number of simultaneously transmitted carriers supported by the second terminal device, the number of simultaneously received carriers supported by the second terminal device, the frequency band combination supported by the second terminal device, the carrier combination supported by the second terminal device, whether the second terminal device supports simultaneous transmission on carriers of different frequency bands, whether the second terminal device supports simultaneous reception on carriers of different frequency bands, whether the second terminal device supports simultaneous transmission on non-adjacent carriers, and whether the second terminal device supports simultaneous reception on non-adjacent carriers;

The first terminal equipment selects at least one carrier according to the first information; the at least one carrier is configured to send sidestream information to the second terminal device.
The method of claim 1, wherein,

and if the sidestream information sent on the at least one carrier activates sidestream feedback, the sidestream feedback information corresponding to the sidestream information on the at least one carrier is located in the same time slot or the same time domain symbol.
The method of claim 1 or 2, wherein,

and if the first information at least comprises the number of the simultaneously transmitted carriers supported by the second terminal equipment, the number of the at least one carrier is smaller than or equal to the number of the simultaneously transmitted carriers supported by the second terminal equipment.
The method of claim 1 or 2, wherein,

and if the first information at least comprises the number of the simultaneously received carriers supported by the second terminal equipment, the number of the at least one carrier is smaller than or equal to the number of the simultaneously received carriers supported by the second terminal equipment.
The method of claim 1 or 2, wherein,

if the first information at least comprises the frequency band combination supported by the second terminal equipment;

The first terminal device selects at least one carrier according to the first information, including:

and the first terminal equipment selects at least one carrier from carriers in the frequency band combination supported by the second terminal equipment.
The method of claim 1 or 2, wherein,

if the first information at least comprises that the second terminal equipment does not support simultaneous transmission on carriers of different frequency bands, or if the first information at least comprises that the second terminal equipment does not support simultaneous reception on carriers of different frequency bands;

the first terminal device selects at least one carrier according to the first information, including:

the first terminal device selects the at least one carrier wave in the same frequency band.
The method of claim 1 or 2, wherein,

if the first information at least comprises carrier combination supported by the second terminal equipment;

the first terminal device selects at least one carrier according to the first information, including:

the first terminal device selects the at least one carrier from the carrier combination supported by the second terminal device.
The method of claim 1 or 2, wherein,

And if the first information at least comprises that the second terminal equipment does not support simultaneous transmission on non-adjacent carriers, or if the first information at least comprises that the second terminal equipment does not support simultaneous reception on non-adjacent carriers, the at least one carrier does not comprise non-adjacent carriers.
The method of any of claims 1-8, wherein the sidestream information sent on some or all of the at least one carrier activates sidestream feedback.
The method of any one of claims 1 to 9, wherein the method further comprises:

and the first terminal equipment performs resource selection on the at least one carrier according to the first information.
The method of claim 10, wherein,

if the first information at least comprises the number of simultaneously transmitted carriers supported by the second terminal device, and the number of the at least one carrier is greater than the number of simultaneously transmitted carriers supported by the second terminal device;

the first terminal device performs resource selection on the at least one carrier according to the first information, including:

and the first terminal equipment performs resource selection on the at least one carrier according to the number of the carriers supported by the second terminal equipment and transmitted simultaneously.
The method of claim 11, wherein,

and if the sidestream information sent by all carriers in the at least one carrier activates sidestream feedback, the number of carriers corresponding to the sidestream feedback information which is located in the same time slot and corresponds to the sidestream information sent on the resource selected on the at least one carrier does not exceed the number of simultaneously sent carriers supported by the second terminal device.
The method of any one of claims 1 to 9, wherein the method further comprises:

and the first terminal equipment determines whether the sidestream information sent on the at least one carrier wave activates sidestream feedback according to the first information.
The method of claim 13, wherein,

if the first information at least comprises the number of simultaneously transmitted carriers supported by the second terminal device, and the number of the at least one carrier is greater than the number of simultaneously transmitted carriers supported by the second terminal device;

the first terminal device determines whether the sidestream information sent on the at least one carrier activates sidestream feedback according to the first information, including:

and the first terminal equipment determines whether the sidestream information transmitted on the at least one carrier activates sidestream feedback according to the number of the carriers supported by the second terminal equipment and transmitted simultaneously.
The method of claim 14, wherein the first terminal device determining whether the sidestream information sent on the at least one carrier activates sidestream feedback based on a number of concurrently transmitted carriers supported by the second terminal device, comprising:

the first terminal equipment determines that sidestream information sent on M carriers in the at least one carrier activates sidestream feedback; m is a positive integer, and M is smaller than or equal to the number of simultaneously transmitted carriers supported by the second terminal device.
The method according to any of claims 1 to 9, wherein if the first information at least includes that the second terminal device does not support simultaneous transmission on carriers of different frequency bands, and the first terminal device selects carriers within a plurality of frequency bands;

the method further comprises the steps of:

and the first terminal equipment only activates the sidestream feedback of the sidestream information sent on the carrier wave in one of the frequency bands.
The method according to any of claims 1 to 9, wherein if the first information comprises at least that the second terminal device does not support simultaneous transmission on non-adjacent carriers, and the first terminal device selects a plurality of non-adjacent carriers;

The method further comprises the steps of:

and the first terminal equipment only activates the sidestream feedback of the sidestream information sent on the adjacent carrier waves in the plurality of carrier waves.
The method of any of claims 1 to 17, wherein the sidestream information comprises at least one of:

side row control information, side row reference signals and side row data.
The method according to any of claims 1 to 18, wherein before the first terminal device receives the first information sent by the second terminal device, the method further comprises:

the first terminal equipment sends second information to the second terminal equipment; the second information is used for requesting content included in the first information.
The method of claim 19, wherein,

the first information is carried by PC 5-radio resource control RRC signaling, or carried by a media access control element MAC CE; and/or the number of the groups of groups,

the second information is carried through PC5-RRC signaling or carried through MAC CE.
The method of claim 19, wherein,

the first information is carried by a user equipment capability information UECapacity information Sidelink, and/or the second information is carried by a user equipment capability inquiry UECapacity EnquirySidelink.
The method of any one of claims 1 to 21, wherein the combination of frequency bands comprises at least one of:

frequency band combination of evolved universal radio access E-UTRA and new radio NR, frequency band combination of NR and NR.
The method of any of claims 1 to 22, wherein the carrier combination comprises at least one of:

carrier combination between frequency bands and carrier combination within a frequency band.
A method of wireless communication, comprising:

the second terminal equipment sends first information to the first terminal equipment; wherein,

the first information includes at least one of: the number of simultaneously transmitted carriers supported by the second terminal device, the number of simultaneously received carriers supported by the second terminal device, the frequency band combination supported by the second terminal device, the carrier combination supported by the second terminal device, whether the second terminal device supports simultaneous transmission on carriers of different frequency bands, whether the second terminal device supports simultaneous reception on carriers of different frequency bands, whether the second terminal device supports simultaneous transmission on non-adjacent carriers, and whether the second terminal device supports simultaneous reception on non-adjacent carriers; the first information is used for the first terminal equipment to select at least one carrier wave, and the at least one carrier wave is used for the first terminal equipment to send sidestream information to the second terminal equipment.
The method of claim 24, wherein,

and if the sidestream information sent on the at least one carrier activates sidestream feedback, the sidestream feedback information corresponding to the sidestream information on the at least one carrier is located in the same time slot or the same time domain symbol.
The method of claim 24 or 25, wherein,

and if the first information at least comprises the number of the simultaneously transmitted carriers supported by the second terminal equipment, the number of the at least one carrier is smaller than or equal to the number of the simultaneously transmitted carriers supported by the second terminal equipment.
The method of claim 24 or 25, wherein,

and if the first information at least comprises the number of the simultaneously received carriers supported by the second terminal equipment, the number of the at least one carrier is smaller than or equal to the number of the simultaneously received carriers supported by the second terminal equipment.
The method of claim 24 or 25, wherein,

and if the first information at least comprises the frequency band combination supported by the second terminal equipment, the at least one carrier belongs to the frequency band combination supported by the second terminal equipment.
The method of claim 24 or 25, wherein,

If the first information at least includes that the second terminal equipment does not support simultaneous transmission on carriers of different frequency bands, or if the first information at least includes that the second terminal equipment does not support simultaneous reception on carriers of different frequency bands, the at least one carrier belongs to the same frequency band.
The method of claim 24 or 25, wherein,

and if the first information at least comprises the carrier combination supported by the second terminal equipment, the at least one carrier belongs to the carrier combination supported by the second terminal equipment.
The method of claim 24 or 25, wherein,

and if the first information at least comprises that the second terminal equipment does not support simultaneous transmission on non-adjacent carriers, or if the first information at least comprises that the second terminal equipment does not support simultaneous reception on non-adjacent carriers, the at least one carrier does not comprise non-adjacent carriers.
The method of any of claims 24 to 31, wherein the sidestream information sent on some or all of the at least one carrier activates sidestream feedback.
The method according to any of claims 24 to 32, wherein the first information is further used for resource selection by the first terminal device on the at least one carrier.
The method of claim 33, wherein,

the first information at least comprises the number of simultaneously transmitted carriers supported by the second terminal device, and the number of the at least one carrier is larger than the number of simultaneously transmitted carriers supported by the second terminal device.
The method of claim 34, wherein,

and if the sidestream information sent by all carriers in the at least one carrier activates sidestream feedback, the number of carriers corresponding to the sidestream feedback information which is located in the same time slot and corresponds to the sidestream information sent on the resource selected on the at least one carrier does not exceed the number of simultaneously sent carriers supported by the second terminal device.
The method according to any of claims 24 to 32, wherein the first information is further for the first terminal device to determine whether the sidestream information sent on the at least one carrier activates sidestream feedback.
The method of claim 36, wherein,

the first information at least comprises the number of simultaneously transmitted carriers supported by the second terminal device, and the number of the at least one carrier is larger than the number of simultaneously transmitted carriers supported by the second terminal device.
The method of claim 37, wherein,

the sidestream information sent on M carriers of the at least one carrier activates sidestream feedback; m is a positive integer, and M is smaller than or equal to the number of simultaneously transmitted carriers supported by the second terminal device.
A method as claimed in any one of claims 24 to 32, wherein if the first information comprises at least that the second terminal device does not support simultaneous transmission on carriers of different frequency bands, and the first terminal device selects carriers within a plurality of frequency bands, side information transmitted on carriers within one of the plurality of frequency bands activates side feedback.
A method as claimed in any one of claims 24 to 32, wherein if the first information comprises at least that the second terminal device does not support simultaneous transmission on non-adjacent carriers and the first terminal device selects a plurality of non-adjacent carriers, sidestream information transmitted on adjacent carriers of the plurality of carriers activates sidestream feedback.
The method of any one of claims 24 to 40, wherein the sidestream information includes at least one of:

Side row control information, side row reference signals and side row data.
The method of any of claims 24 to 41, wherein before the second terminal device sends the first information to the first terminal device, the method further comprises:

the second terminal equipment receives second information sent by the first terminal equipment; the second information is used for requesting content included in the first information.
The method of claim 42, wherein,

the first information is carried by PC 5-radio resource control RRC signaling, or carried by a media access control element MAC CE; and/or the number of the groups of groups,

the second information is carried through PC5-RRC signaling or carried through MAC CE.
The method of claim 42, wherein,

the first information is carried by a user equipment capability information UECapability information Sidelink, and/or the second information is carried by a user equipment capability inquiry UECapability EnquirySidelink.
The method of any one of claims 24 to 44, wherein the band combination comprises at least one of:

Frequency band combination of evolved universal radio access E-UTRA and new radio NR, frequency band combination of NR and NR.
The method of any one of claims 24 to 45, wherein the carrier combination comprises at least one of:

carrier combination between frequency bands and carrier combination within a frequency band.
A method of wireless communication, comprising:

the first terminal equipment receives first indication information sent by the second terminal equipment; the first indication information is used for indicating the sidestream sending carrier wave selected by the second terminal equipment;

and the first terminal equipment selects a carrier wave for sending the sidestream information to the second terminal equipment according to the first indication information.
The method of claim 47, wherein the side-by-side transmission carriers selected by the second terminal device belong to different frequency bands, or wherein the side-by-side transmission carriers selected by the second terminal device belong to the same frequency band.
The method of claim 47 or 48, wherein the sidestream information includes at least one of:

side row control information, side row reference signals and side row data.
The method of any one of claims 47 to 49,

The first indication information is carried by a PC 5-radio resource control RRC signaling, or carried by a media access control element MAC CE.
A method of wireless communication, comprising:

the second terminal equipment sends first indication information to the first terminal equipment; the first indication information is used for indicating the side transmission carrier selected by the second terminal equipment, and the first indication information is used for the first terminal equipment to select the carrier used for transmitting the side transmission information to the second terminal equipment.
The method of claim 51, wherein the side-by-side transmission carriers selected by the second terminal device belong to different frequency bands, or wherein the side-by-side transmission carriers selected by the second terminal device belong to the same frequency band.
The method of claim 51 or 52, wherein the sidestream information comprises at least one of:

side row control information, side row reference signals and side row data.
The method of any one of claim 51 to 53,

the first indication information is carried by a PC 5-radio resource control RRC signaling, or carried by a media access control element MAC CE.
A terminal device, wherein the terminal device is a first terminal device, the terminal device comprising:

the communication unit is used for receiving the first information sent by the second terminal equipment; wherein the first information includes at least one of: the number of simultaneously transmitted carriers supported by the second terminal device, the number of simultaneously received carriers supported by the second terminal device, the frequency band combination supported by the second terminal device, the carrier combination supported by the second terminal device, whether the second terminal device supports simultaneous transmission on carriers of different frequency bands, whether the second terminal device supports simultaneous reception on carriers of different frequency bands, whether the second terminal device supports simultaneous transmission on non-adjacent carriers, and whether the second terminal device supports simultaneous reception on non-adjacent carriers;

the processing unit is used for selecting at least one carrier according to the first information; the at least one carrier is configured to send sidestream information to the second terminal device.
The terminal device of claim 55, wherein,

and if the sidestream information sent on the at least one carrier activates sidestream feedback, the sidestream feedback information corresponding to the sidestream information on the at least one carrier is located in the same time slot or the same time domain symbol.
The terminal device of claim 55 or 56, wherein,

and if the first information at least comprises the number of the simultaneously transmitted carriers supported by the second terminal equipment, the number of the at least one carrier is smaller than or equal to the number of the simultaneously transmitted carriers supported by the second terminal equipment.
The terminal device of claim 55 or 56, wherein,

and if the first information at least comprises the number of the simultaneously received carriers supported by the second terminal equipment, the number of the at least one carrier is smaller than or equal to the number of the simultaneously received carriers supported by the second terminal equipment.
The terminal device of claim 55 or 56, wherein,

if the first information at least comprises the frequency band combination supported by the second terminal equipment;

the processing unit is specifically configured to:

and selecting at least one carrier from carriers in the frequency band combination supported by the second terminal equipment.
The terminal device of claim 55 or 56, wherein,

if the first information at least comprises that the second terminal equipment does not support simultaneous transmission on carriers of different frequency bands, or if the first information at least comprises that the second terminal equipment does not support simultaneous reception on carriers of different frequency bands;

The processing unit is specifically configured to:

and selecting the at least one carrier wave in the same frequency band.
The terminal device of claim 55 or 56, wherein,

if the first information at least comprises carrier combination supported by the second terminal equipment;

the processing unit is specifically configured to:

and selecting the at least one carrier from carrier combinations supported by the second terminal equipment.
The terminal device of claim 55 or 56, wherein,

and if the first information at least comprises that the second terminal equipment does not support simultaneous transmission on non-adjacent carriers, or if the first information at least comprises that the second terminal equipment does not support simultaneous reception on non-adjacent carriers, the at least one carrier does not comprise non-adjacent carriers.
A terminal device according to any of claims 55 to 62, wherein the sidestream information sent on some or all of the at least one carrier activates sidestream feedback.
The terminal device of any of claims 55 to 63, wherein the processing unit is further configured to perform resource selection on the at least one carrier according to the first information.
The terminal device of claim 64, wherein,

if the first information at least comprises the number of simultaneously transmitted carriers supported by the second terminal device, and the number of the at least one carrier is greater than the number of simultaneously transmitted carriers supported by the second terminal device;

the processing unit is specifically configured to:

and selecting resources on the at least one carrier according to the number of the carriers which are supported by the second terminal equipment and transmitted simultaneously.
The terminal device of claim 65, wherein,

and if the sidestream information sent by all carriers in the at least one carrier activates sidestream feedback, the number of carriers corresponding to the sidestream feedback information which is located in the same time slot and corresponds to the sidestream information sent on the resource selected on the at least one carrier does not exceed the number of simultaneously sent carriers supported by the second terminal device.
The terminal device of any of claims 55 to 63, wherein the processing unit is further configured to determine whether the sidestream information sent on the at least one carrier activates sidestream feedback based on the first information.
The terminal device of claim 67,

If the first information at least comprises the number of simultaneously transmitted carriers supported by the second terminal device, and the number of the at least one carrier is greater than the number of simultaneously transmitted carriers supported by the second terminal device;

the processing unit is specifically configured to:

and determining whether the sidestream information transmitted on the at least one carrier activates sidestream feedback according to the number of the carriers supported by the second terminal device and transmitted simultaneously.
The terminal device of claim 68, wherein the processing unit is specifically configured to:

determining sidestream information transmitted on M carriers of the at least one carrier to activate sidestream feedback; m is a positive integer, and M is smaller than or equal to the number of simultaneously transmitted carriers supported by the second terminal device.
A terminal device according to any of claims 55 to 63, wherein if the first information comprises at least that the second terminal device does not support simultaneous transmission on carriers of different frequency bands, and the first terminal device selects carriers within a plurality of frequency bands;

the processing unit is further configured to activate only sidestream feedback of sidestream information sent on carriers within one of the plurality of frequency bands.
A terminal device as claimed in any one of claims 55 to 63, wherein if the first information comprises at least that the second terminal device does not support simultaneous transmission on non-adjacent carriers and the first terminal device selects a plurality of non-adjacent carriers;

the processing unit is further configured to activate only sidestream feedback of sidestream information sent on an adjacent carrier of the plurality of carriers.
The terminal device of any of claims 55 to 71, wherein the sidestream information includes at least one of:

side row control information, side row reference signals and side row data.
A terminal device according to any of claims 55 to 72, wherein the communication unit is further adapted to send second information to the second terminal device before the first terminal device receives the first information sent by the second terminal device; the second information is used for requesting content included in the first information.
The terminal device of claim 73, wherein,

the first information is carried by PC 5-radio resource control RRC signaling, or carried by a media access control element MAC CE; and/or the number of the groups of groups,

The second information is carried through PC5-RRC signaling or carried through MAC CE.
The terminal device of claim 73, wherein,

the first information is carried by a user equipment capability information UECapacity information Sidelink, and/or the second information is carried by a user equipment capability inquiry UECapacity EnquirySidelink.
The terminal device according to any of the claims 55 to 75, wherein said combination of frequency bands comprises at least one of:

frequency band combination of evolved universal radio access E-UTRA and new radio NR, frequency band combination of NR and NR.
The terminal device of any of claims 55 to 76, wherein the carrier combination comprises at least one of:

carrier combination between frequency bands and carrier combination within a frequency band.
A terminal device, wherein the terminal device is a second terminal device, the terminal device comprising:

a communication unit for transmitting first information to a first terminal device; wherein,

the first information includes at least one of: the number of simultaneously transmitted carriers supported by the second terminal device, the number of simultaneously received carriers supported by the second terminal device, the frequency band combination supported by the second terminal device, the carrier combination supported by the second terminal device, whether the second terminal device supports simultaneous transmission on carriers of different frequency bands, whether the second terminal device supports simultaneous reception on carriers of different frequency bands, whether the second terminal device supports simultaneous transmission on non-adjacent carriers, and whether the second terminal device supports simultaneous reception on non-adjacent carriers; the first information is used for the first terminal equipment to select at least one carrier wave, and the at least one carrier wave is used for the first terminal equipment to send sidestream information to the second terminal equipment.
The terminal device of claim 78, wherein,

and if the sidestream information sent on the at least one carrier activates sidestream feedback, the sidestream feedback information corresponding to the sidestream information on the at least one carrier is located in the same time slot or the same time domain symbol.
The terminal device of claim 78 or 79,

and if the first information at least comprises the number of the simultaneously transmitted carriers supported by the second terminal equipment, the number of the at least one carrier is smaller than or equal to the number of the simultaneously transmitted carriers supported by the second terminal equipment.
The terminal device of claim 78 or 79,

and if the first information at least comprises the number of the simultaneously received carriers supported by the second terminal equipment, the number of the at least one carrier is smaller than or equal to the number of the simultaneously received carriers supported by the second terminal equipment.
The terminal device of claim 78 or 79,

and if the first information at least comprises the frequency band combination supported by the second terminal equipment, the at least one carrier belongs to the frequency band combination supported by the second terminal equipment.
The terminal device of claim 78 or 79,

if the first information at least includes that the second terminal equipment does not support simultaneous transmission on carriers of different frequency bands, or if the first information at least includes that the second terminal equipment does not support simultaneous reception on carriers of different frequency bands, the at least one carrier belongs to the same frequency band.
The terminal device of claim 78 or 79,

and if the first information at least comprises the carrier combination supported by the second terminal equipment, the at least one carrier belongs to the carrier combination supported by the second terminal equipment.
The terminal device of claim 78 or 79,

and if the first information at least comprises that the second terminal equipment does not support simultaneous transmission on non-adjacent carriers, or if the first information at least comprises that the second terminal equipment does not support simultaneous reception on non-adjacent carriers, the at least one carrier does not comprise non-adjacent carriers.
A terminal device according to any of claims 78 to 85, wherein the sidestream information sent on some or all of the at least one carrier activates sidestream feedback.
The terminal device of any of claims 78 to 86, wherein the first information is further for the first terminal device to perform resource selection on the at least one carrier.
The terminal device of claim 87, wherein,

the first information at least comprises the number of simultaneously transmitted carriers supported by the second terminal device, and the number of the at least one carrier is larger than the number of simultaneously transmitted carriers supported by the second terminal device.
The terminal device of claim 88, wherein,

and if the sidestream information sent by all carriers in the at least one carrier activates sidestream feedback, the number of carriers corresponding to the sidestream feedback information which is located in the same time slot and corresponds to the sidestream information sent on the resource selected on the at least one carrier does not exceed the number of simultaneously sent carriers supported by the second terminal device.
The terminal device of any of claims 78 to 86, wherein the first information is further for the first terminal device to determine whether the sidestream information sent on the at least one carrier activates sidestream feedback.
The terminal device of claim 90, wherein,

the first information at least comprises the number of simultaneously transmitted carriers supported by the second terminal device, and the number of the at least one carrier is larger than the number of simultaneously transmitted carriers supported by the second terminal device.
The terminal device of claim 91, wherein,

the sidestream information sent on M carriers of the at least one carrier activates sidestream feedback; m is a positive integer, and M is smaller than or equal to the number of simultaneously transmitted carriers supported by the second terminal device.
A terminal device as claimed in any one of claims 78 to 86, wherein if the first information comprises at least that the second terminal device does not support simultaneous transmission on carriers of different frequency bands, and the first terminal device selects carriers within a plurality of frequency bands, side information transmitted on carriers within one of the plurality of frequency bands activates side feedback.
A terminal device as claimed in any of claims 78 to 86, wherein if the first information comprises at least that the second terminal device does not support simultaneous transmission on non-adjacent carriers and the first terminal device selects a non-adjacent plurality of carriers, sidestream information transmitted on adjacent carriers of the plurality of carriers activates sidestream feedback.
The terminal device of any of claims 78 to 94, wherein the sidestream information includes at least one of:

side row control information, side row reference signals and side row data.
The terminal device of any of claims 78 to 95, wherein the communication unit is further configured to receive second information sent by the first terminal device before the second terminal device sends the first information to the first terminal device; the second information is used for requesting content included in the first information.
The terminal device of claim 96, wherein,

the first information is carried by PC 5-radio resource control RRC signaling, or carried by a media access control element MAC CE; and/or the number of the groups of groups,

the second information is carried through PC5-RRC signaling or carried through MAC CE.
The terminal device of claim 96, wherein,

the first information is carried by a user equipment capability information UECapacity information Sidelink, and/or the second information is carried by a user equipment capability inquiry UECapacity EnquirySidelink.
The terminal device of any of claims 78 to 98, wherein the band combination comprises at least one of:

frequency band combination of evolved universal radio access E-UTRA and new radio NR, frequency band combination of NR and NR.
The terminal device of any of claims 78 to 99, wherein the carrier combination comprises at least one of:

carrier combination between frequency bands and carrier combination within a frequency band.
A terminal device, wherein the terminal device is a first terminal device, the terminal device comprising:

the communication unit is used for receiving the first indication information sent by the second terminal equipment; the first indication information is used for indicating the sidestream sending carrier wave selected by the second terminal equipment;

and the processing unit is used for selecting a carrier wave for transmitting the sidestream information to the second terminal equipment according to the first indication information.
The terminal device of claim 101, wherein the side-by-side transmission carriers selected by the second terminal device belong to different frequency bands, or wherein the side-by-side transmission carriers selected by the second terminal device belong to the same frequency band.
The terminal device of claim 101 or 102, wherein the sidestream information includes at least one of:

Side row control information, side row reference signals and side row data.
The terminal device according to any of the claims 101 to 103,

the first indication information is carried by a PC 5-radio resource control RRC signaling, or carried by a media access control element MAC CE.
A terminal device, wherein the terminal device is a second terminal device, the terminal device comprising:

a communication unit, configured to send first indication information to a first terminal device; the first indication information is used for indicating the side transmission carrier selected by the second terminal equipment, and the first indication information is used for the first terminal equipment to select the carrier used for transmitting the side transmission information to the second terminal equipment.
The terminal device of claim 105, wherein the side transmission carriers selected by the second terminal device belong to different frequency bands, or wherein the side transmission carriers selected by the second terminal device belong to the same frequency band.
The terminal device of claim 105 or 106, wherein the sidestream information includes at least one of:

Side row control information, side row reference signals and side row data.
The terminal device according to any of the claims 105 to 107,

the first indication information is carried by a PC 5-radio resource control RRC signaling, or carried by a media access control element MAC CE.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory, to perform the method of any of claims 1 to 23, or to perform the method of any of claims 24 to 46, or to perform the method of any of claims 47 to 50, or to perform the method of any of claims 51 to 54.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 23, or to perform the method of any one of claims 24 to 46, or to perform the method of any one of claims 47 to 50, or to perform the method of any one of claims 51 to 54.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 23, or to perform the method of any one of claims 24 to 46, or to perform the method of any one of claims 47 to 50, or to perform the method of any one of claims 51 to 54.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 23, or to perform the method of any one of claims 24 to 46, or to perform the method of any one of claims 47 to 50, or to perform the method of any one of claims 51 to 54.
A computer program, characterized in that the computer program causes a computer to perform the method of any one of claims 1 to 23, or to perform the method of any one of claims 24 to 46, or to perform the method of any one of claims 47 to 50, or to perform the method of any one of claims 51 to 54.