CN117580170A

CN117580170A - Side link communication method and communication device

Info

Publication number: CN117580170A
Application number: CN202210934760.4A
Authority: CN
Inventors: 邓云; 刘星
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2022-08-04
Filing date: 2022-08-04
Publication date: 2024-02-20
Also published as: WO2024027812A1

Abstract

The application discloses a side link communication method and a communication device, wherein the side link communication method comprises the following steps: transmitting indication information to the network equipment, wherein the indication information is used for indicating a carrier wave needing to transmit side link channel state information SL CSI; receiving first resource allocation information sent by the network equipment, wherein the first resource allocation information is used for indicating side chain transmission resources allocated on the carrier; and transmitting the SL CSI on the side chain transmission resource. By implementing the method and the device, the SL CSI to be transmitted on which carriers can be indicated to the network equipment, so that the network equipment can conveniently allocate the side link transmission resources of the corresponding carriers.

Description

Side link communication method and communication device

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a side link communication method and a communication device.

Background

In the side link communication (Sidelink Communication), signaling and data interaction between terminal devices (UE) can be performed through a PC5 interface. The terminal device supporting the side link communication has two resource allocation modes, a scheduled resource allocation mode (also referred to as mode one) and an automatic resource selection mode (also referred to as mode two). For the scheduled resource allocation mode, the transmitting terminal device needs to send a scheduling request (Scheduling Request, SR) to the network device in a connected state to request allocation of resources for side link transmission. For the automatic resource selection mode, the transmitting terminal device selects a resource for side link transmission from the resource pool.

In the side link communication, in order to improve the channel transmission efficiency, a terminal device performing side link communication may transmit side link channel state information (Sidelink Channel State Information, SL CSI) to another terminal device. If the terminal device that needs to send the SL CSI is in mode one, the terminal device needs to trigger the SR to request the network device to allocate the sidelink transmission resources for transmitting the SL CSI. But currently the network device configures one SR configuration information for the SL CSI to be transmitted by the terminal device. The configured SR is used for transmitting 1 bit of information, and is used for indicating whether side link transmission resources for transmitting SL CSI need to be allocated, and this way is only suitable for the terminal device to support side link communication on one carrier, if the terminal device supports side link communication on multiple carriers, it is possible to transmit SL CSI on any one or multiple carriers, and how to request side link transmission resources for transmitting SL CSI at this time is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a side link communication method and a communication device, which can indicate to network equipment which carrier waves are to be transmitted with SL CSI, thereby facilitating the network equipment to allocate side link transmission resources of corresponding carrier waves and supporting the scene that terminal equipment performs side link communication on a plurality of carrier waves.

In a first aspect, an embodiment of the present application provides a side link communication method, including:

transmitting indication information to the network equipment, wherein the indication information is used for indicating a carrier wave needing to transmit side link channel state information SL CSI;

receiving first resource allocation information sent by the network equipment, wherein the first resource allocation information is used for indicating side chain transmission resources allocated on the carrier;

and transmitting the SL CSI on the side chain transmission resource.

Based on the description of the first aspect, the terminal device may indicate, to the network device through the indication information, that the terminal device has a carrier wave of SL CSI to be transmitted, where the terminal device receives first resource allocation information sent by the network device, where the first resource allocation information is used to indicate a side link transmission resource allocated by the network device on the carrier wave, and the terminal device sends the SL CSI on the allocated side link transmission resource. According to the embodiment of the application, the scene that the terminal equipment performs the side link communication on a plurality of carriers can be supported, when the terminal equipment has the SL CSI to be transmitted on one or a plurality of carriers, the corresponding carrier is indicated to the network equipment, and the network equipment is also convenient to allocate the side link transmission resources of the corresponding carrier.

In an alternative embodiment, the indication information is carried in a first scheduling request SR, where the first SR is used to request the network device to allocate side link transmission resources for transmitting SL CSI.

In this way, the indication information can be carried in the SR so as to be compatible with existing systems, while reducing signaling overhead.

In an alternative embodiment, the indication information includes N bits in the first SR, where N is an integer greater than or equal to 2.

In this way, the indication may be indicated by at least two bits in the first SR, that is, the at least two bits may indicate multiple carriers through different bit value combinations, thereby implementing a scenario of supporting the terminal device to perform side link communication on multiple carriers.

In an optional implementation manner, the value of N is determined according to the number of carriers for side link communication by the terminal device, where the carriers for side link communication by the terminal device include the carriers with SL CSI to be transmitted.

In this way, any one or more of a plurality of carriers on which the terminal device performs side link communication can be instructed by N bits.

In an alternative embodiment, there is a correspondence between the values represented by the N bits and the indicated carrier;

The larger the value represented by the N bits is, the larger the carrier indicated by the N bits is, or the correspondence is configured by the network device.

In this way, the network device may be facilitated to determine the carrier indicated by the N bits.

In an alternative embodiment, the first SR is multiplexed with HARQ feedback information for a hybrid automatic repeat request and transmitted on a first uplink transmission resource, where the first uplink transmission resource is a transmission resource allocated for the HARQ feedback information.

In this way, the first SR carrying the indication information is multiplexed with the HARQ feedback information, thereby saving transmission resources.

In an alternative embodiment, the CSI multiplexing of the first SR and the downlink channel is transmitted on a second uplink transmission resource, where the second uplink transmission resource is a transmission resource allocated for the CSI of the downlink channel.

In this way, the first SR carrying the indication information is multiplexed with CSI of the downlink channel, thereby saving transmission resources.

In an alternative embodiment, the indication information is carried in a data buffer status report BSR.

In this way, the indication information is carried in the BSR, so that the modification of the existing SR is avoided, and the system is compatible with the existing system.

In an alternative embodiment, the indication information includes M bits in the BSR, where M is an integer greater than or equal to 1.

In this way, the carrier wave where the SL CSI to be transmitted exists in the terminal equipment is indicated by M bits in the BSR, so that the modification of the existing SR can be avoided, and the system is compatible with the existing system.

In an alternative embodiment, each of the M bits is used to indicate whether there is SL CSI to be transmitted on a different carrier, respectively.

In this way, one bit indicates whether a carrier has SL CSI to be transmitted, and the indication manner is simple and intuitive.

In an alternative embodiment, the method further comprises:

transmitting a second SR to the network device, where the second SR is used to request the network device to allocate uplink transmission resources;

receiving second resource allocation information sent by the network equipment, wherein the second resource allocation information is used for indicating a third uplink transmission resource;

the sending indication information to the network device includes:

and sending the BSR carrying the indication information to the network equipment on the third uplink transmission resource.

In this way, the existing SR configuration may not be changed, and the indication information may be carried through the BSR, thereby being compatible with the existing system.

In a second aspect, an embodiment of the present application provides a method for side link communication, where the method includes:

receiving indication information sent by terminal equipment, wherein the indication information is used for indicating a carrier wave needing to send side link channel state information SL CSI;

and sending first resource allocation information to the terminal equipment in response to the indication information, wherein the first resource allocation information is used for indicating side chain transmission resources allocated on the carrier.

Based on the description of the second aspect, the terminal device may indicate to the network device that the terminal device has SL CSI to be transmitted on a certain carrier, through the indication information, and the network device allocates sidelink transmission resources on the carrier. According to the embodiment of the application, the scene that the terminal equipment performs the side link communication on a plurality of carriers can be supported, when the terminal equipment has the SL CSI to be transmitted on one or a plurality of carriers, the corresponding carrier is indicated to the network equipment, and the network equipment is also convenient to allocate the side link transmission resources of the corresponding carrier.

In an alternative embodiment, the first SR is multiplexed with HARQ feedback information for a hybrid automatic repeat request and transmitted on a first uplink transmission resource, where the first uplink transmission resource is a transmission resource allocated for the HARQ feedback information. In an alternative embodiment, the CSI multiplexing of the first SR and the downlink channel is transmitted on a second uplink transmission resource, where the second uplink transmission resource is a transmission resource allocated for the CSI of the downlink channel.

In an alternative embodiment, the method further comprises:

receiving a second SR sent by the terminal equipment, wherein the second SR is used for requesting the network equipment to allocate uplink transmission resources;

transmitting second resource allocation information to the terminal equipment in response to the second SR, wherein the second resource allocation information is used for indicating a third uplink transmission resource;

the receiving the indication information sent by the terminal equipment comprises the following steps:

and receiving the BSR carrying the indication information sent by the terminal equipment on the third uplink transmission resource.

In a third aspect, embodiments of the present application provide a communication device comprising means for implementing the method in any one of the possible implementations of the first and second aspects.

In a fourth aspect, embodiments of the present application provide a communications apparatus comprising a processor and a memory, the processor and the memory being interconnected, the memory being configured to store a computer program comprising program instructions, the processor being configured to invoke the program instructions to perform a method according to the first aspect or any alternative embodiment of the first aspect or to perform a method according to the second aspect or any alternative embodiment of the second aspect.

In a fifth aspect, embodiments of the present application provide a chip comprising a processor coupled to an interface, the processor and the interface; the interface is for receiving or outputting signals and the processor is for executing code instructions to perform a method according to the first aspect or any optional implementation of the first aspect or to perform a method according to the second aspect or any optional implementation of the second aspect.

In a sixth aspect, an embodiment of the present application provides a module apparatus, where the module apparatus includes a communication module, a power module, a storage module, and a chip module, where: the power supply module is used for providing electric energy for the module equipment; the storage module is used for storing data and/or instructions; the communication module is communicated with external equipment; the chip module is used for calling data and/or instructions stored in the storage module, and executing the method according to the first aspect or any optional implementation manner of the first aspect or executing the method according to the second aspect or any optional implementation manner of the second aspect in combination with the communication module.

In a seventh aspect, embodiments of the present application provide a computer readable storage medium storing a computer program, the computer program comprising program instructions, which when executed by an electronic device, implement a method according to the first aspect or any optional implementation of the first aspect, or perform a method according to the second aspect or any optional implementation of the second aspect.

Drawings

Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application;

fig. 2 is a schematic flow chart of a side-link communication method according to an embodiment of the present application;

fig. 3a is a schematic diagram of an SL CSI report format according to an embodiment of the present application;

fig. 3b is a schematic diagram of a BSR format according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of still another communication device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a module device according to an embodiment of the present application.

Detailed Description

In the embodiment of the present application, unless otherwise specified, the character "/" indicates that the front-rear association object is one or a relationship. For example, A/B may represent A or B. "and/or" describes an association relationship of an association object, meaning that three relationships may exist. For example, a and/or B may represent: a exists alone, A and B exist together, and B exists alone.

It should be noted that the terms "first," "second," and the like in the embodiments of the present application are used for distinguishing between description and not necessarily for indicating or implying a relative importance or number of features or characteristics that are indicated, nor does it imply a sequential order.

In the embodiments of the present application, "at least one" means one or more, and "a plurality" means two or more. Furthermore, "at least one item(s)" below, or the like, refers to any combination of these items, and may include any combination of single item(s) or plural items(s). For example, at least one (one) of A, B or C may represent: a, B, C, a and B, a and C, B and C, or A, B and C. Wherein each of A, B, C may itself be an element or a collection comprising one or more elements.

In this application embodiments, "exemplary," "in some embodiments," "in another embodiment," etc. are used to indicate an example, instance, or illustration. Any embodiment or design described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, the term use of an example is intended to present concepts in a concrete fashion.

"of", "corresponding" and "corresponding" in the embodiments of the present application may be sometimes used in combination, and it should be noted that the meaning to be expressed is consistent when the distinction is not emphasized. In the embodiments of the present application, communications and transmissions may sometimes be mixed, and it should be noted that, when the distinction is not emphasized, the meaning expressed is consistent. For example, a transmission may include sending and/or receiving, either nouns or verbs.

The equal to that relates to in this application embodiment can be with being greater than even using, is applicable to the technical scheme that adopts when being greater than, also can be with being less than even using, is applicable to the technical scheme that adopts when being less than. It should be noted that when the number is equal to or greater than the sum, the number cannot be smaller than the sum; when the value is equal to or smaller than that used together, the value is not larger than that used together.

Some terms related to the embodiments of the present application are explained below to facilitate understanding by those skilled in the art.

1. And a terminal device. In this embodiment of the present application, the terminal device is a device with a wireless transceiver function, and may be referred to as a terminal, a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), an access terminal device, a vehicle-mounted terminal device, an industrial control terminal device, a UE unit, a UE station, a mobile station, a remote terminal device, a mobile device, a UE terminal device, a wireless communication device, a UE agent, or a UE apparatus. The terminal device may be fixed or mobile. It should be noted that the terminal device may support at least one wireless communication technology, such as long term evolution (long term evolution, LTE), new radio, NR, etc. For example, the terminal device may be a mobile phone, a tablet, a desktop, a notebook, a kiosk, a car-mounted terminal, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in an industrial control (industrial control), a wireless terminal in a self-driving (self-driving), a wireless terminal in a teleoperation (remote medical surgery), a wireless terminal in a smart grid, a wireless terminal in a transportation security (transportation safety), a wireless terminal in a smart city, a wireless terminal in a smart home (smart home), a cellular phone, a cordless phone, 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), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a wearable device, a terminal in a future mobile communication network, or a public land mobile network (public land mobile network) in a future mobile communication network, etc. In some embodiments of the present application, the terminal device may also be a device with a transceiver function, such as a chip system. The chip system may include a chip and may also include other discrete devices.

2. A network device. The network device in the embodiment of the present application is a device that provides a wireless communication function for a terminal device, and may also be referred to as an access network device, a radio access network (radio access network, RAN) device, or the like. Wherein the network device may support at least one wireless communication technology, e.g., LTE, NR, etc. By way of example, network devices include, but are not limited to: next generation base stations (gnbs), evolved node bs (enbs), radio network controllers (radio network controller, RNCs), node bs (node bs, NB), base station controllers (base station controller, BSC), base transceiver stations (base transceiver station, BTS), home base stations (e.g., home evolved node B, or home node B, HNB), baseband units (BBUs), transceiving points (transmitting and receiving point, TRPs), transmitting points (transmitting point, TP), mobile switching centers, and the like in a fifth generation mobile communication system (5 th-generation, 5G). The network device may also be a wireless controller, a Centralized Unit (CU), and/or a Distributed Unit (DU) in the cloud wireless access network (cloud radio access network, CRAN) scenario, or the network device may be a relay station, an access point, an in-vehicle device, a terminal device, a wearable device, and a network device in future mobile communication or a network device in a future evolved PLMN, etc. In some embodiments, the network device may also be an apparatus, such as a system-on-a-chip, having functionality for providing wireless communication for the terminal device. By way of example, the chip system may include a chip, and may also include other discrete devices.

3. Resource allocation pattern

In side link communication (Sidelink Communication), signaling and data interaction can be performed between terminal devices through a PC5 interface. The terminal device may be within network coverage or outside network coverage while side link communication is performed. When a terminal device is within network coverage, the terminal device may be in any state: a connected state, an idle state, or an Inactive state.

Terminal devices supporting side link communication have two resource allocation modes: a scheduled resource allocation mode (also referred to as mode one) and an automatic resource selection mode (also referred to as mode two). For the scheduled resource allocation mode, a transmitting terminal (Tx UE) needs to transmit an SR request to a network device in a connected state to request allocation of transmission resources for side link communication. The network device schedules side link transmission resources for transmitting side link control information and data.

For the automatic resource selection mode, the sending terminal can be in a connection state, or in an idle state, or in an Inactive state; either within the network coverage or outside the network coverage. The transmitting terminal itself selects the side link transmission resources from the resource pool.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application. The communication system may include, but is not limited to, one or more network devices, one or more terminal devices, such as in fig. 1 for example one network device 101 and two terminal devices, terminal device 102 and terminal device 103, respectively, terminal device 102 and terminal device 103 being capable of side link communication. In fig. 1, the network device 101 takes a base station as an example, the terminal device 102 and the terminal device 103 take a mobile phone as an example, the terminal device 102 or the terminal device 103 can establish a wireless link with the network device 101 to perform communication, and the wireless link established between the terminal device and the network device can be an uplink and/or a downlink, and correspondingly, can also be referred to as an uplink channel and/or a downlink channel. The communication system shown in fig. 1 includes, but is not limited to, a network device and a terminal device, and may further include other communication devices, and the number and form of the devices shown in fig. 1 are used for illustration and not to limit the embodiments of the present application.

In the side link communication, in order to improve the channel transmission efficiency, the terminal device performing the side link communication may trigger the terminal device of the opposite terminal to send the SL CSI, so that the opposite terminal device may take corresponding transmission parameters according to the information after obtaining the SL CSI. If the terminal device that needs to transmit the SL CSI is in mode one, the terminal device needs to transmit an SR to the network device to request the network device to allocate the sidelink transmission resource for transmitting the SL CSI without sidelink transmission resource. In the current protocol, the terminal device only supports side-link communication on one carrier, and the network device configures an SR configuration for possible SL CSI transmission, where the SR configuration may configure time-frequency resources and periods corresponding to the SL CSI SR. The SL CSI SR is an SR for requesting side chain transmission resources for transmitting the SL CSI. Wherein, the SL CSI SR is used to transmit 1 bit of information, by which it can be indicated whether or not a side chain transmission resource for transmitting the SL CSI is requested.

If multi-carrier side link communication Sidelink is introduced, i.e. one terminal device may simultaneously communicate with the same or different terminal device on multiple carriers, then the terminal device may have SL CSI to be transmitted on any carrier or carriers of the multiple carriers. If the terminal equipment is in a connection state and adopts a resource scheduling mode of mode one, the terminal equipment needs to apply for a side link transmission resource for transmitting the SL CSI to the network equipment, however, according to the existing SR configuration, the terminal equipment cannot transmit 1 bit of information to enable the network equipment to accurately know the carrier wave in which the SL CSI needs to be transmitted, and further the network equipment cannot allocate the side link transmission resource to the terminal equipment in time. It is also not feasible to configure one SR per carrier, because of the limited number of SR configurations that require data transmission requests for both the uplink and side link channels, and not all SR configurations can be used for SL CSI transmission requirements. In order to solve the above problem, when the terminal device requests the network device for the side link transmission resource for transmitting the SL CSI, the terminal device sends indication information, where the indication information is used to indicate on which carrier or carriers the terminal device has the SL CSI to be sent, so that the network device allocates the side link transmission resource on the corresponding carrier. This approach does not require the use of multiple SRs to configure transmission resource scheduling requests for SL CSI and also supports the terminal device side link communication scenario over multiple carriers. The network equipment is convenient to allocate side chain transmission resources for transmitting SL CSI on corresponding carriers.

It should be noted that, in the embodiments of the present application, the carrier wave may be replaced by "frequency", which is not described in detail below.

As shown in fig. 2, a flow chart of an embodiment of a side link communication method provided in the present application, as shown in fig. 2, may include, but is not limited to, the following steps:

301, the terminal device sends indication information to the network device, where the indication information is used to indicate a carrier wave that needs to send side link channel state information SL CSI, and may also be referred to as the indication information, where the indication information is used to indicate that the terminal device has a carrier wave that needs to send side link channel state information SL CSI, and accordingly, the network device receives the indication information.

The terminal device may refer to a terminal device that performs carrier aggregation on a side chain.

In one embodiment, the terminal device may perform side link communication on multiple carriers, or may also be referred to as carrier aggregation by the terminal device on side links. For convenience of description, for example, the terminal device performs side link communication on Q carriers, Q may be an integer greater than or equal to 2. If the terminal device has SL CSI to be transmitted on a carrier or carriers, the terminal device may request side link transmission resources for transmitting the SL CSI to the network device, and for convenience of description, the carrier on which the SL CSI to be transmitted is referred to as a first carrier in this application. Wherein the first carrier may comprise one or more carriers, in other words, the terminal device may be that there is SL CSI to be transmitted on the one or more carriers. The Q carriers include a first carrier, in other words, the terminal device may have SL CSI to be transmitted on one or more of the Q carriers. For example, Q may be equal to 8, and the terminal device may perform side-link communication with the same or different terminal devices on 8 carriers, but the terminal device may be that there is SL CSI to be transmitted on any one or more of the 8 carriers, and for convenience of description, one or more carriers on which there is SL CSI to be transmitted will be referred to as a first carrier in this application. The SL CSI described above is used to describe information about the channel quality of the side link channel. For example, SL CSI describes the side link propagation effects of a wireless signal between a transmitter and a receiver, including the effects of distance, scattering, fading, etc. on the signal. Fig. 3a is a schematic diagram of a structure of SL CSI, which includes one byte as shown. Wherein the channel quality indication (Channel Quality Indication, CQI) occupies 4 bits.

The terminal device may acquire the side link transmission resources for transmitting the SL CSI in a mode one (scheduling resource allocation mode), that is, the network device allocates the side link transmission resources for transmitting the SL CSI to the terminal device. In order for the network device to be able to identify on which carrier or carriers the terminal device has SL CSI to send, so that the network device allocates sidelink transmission resources on the corresponding carrier, the terminal device sends indication information to the network device, where the indication information is used to indicate that the terminal device has carriers of the SL CSI to send.

In some embodiments, the indication information may include N bits, where N is an integer greater than or equal to 2, to indicate different carriers and/or carrier combinations by the N bits.

In some embodiments, the value of N may be determined according to the number of carriers that the terminal device performs side link communication.

As an example, if the terminal device performs side link communication on Q carriers, the value of N may be log ₂ Q is rounded up. For example, if Q is 8, the first carrier may be indicated by 3 bits, which may be understood as indicating the first carrier by a value represented by N bits. Where the value represented by N bits is understood to be a binary value represented by the N bits as a whole, e.g. N is 3, if the N bits are 000, the represented value is 0; if the N bits are 001, the indicated value is 1; if the N bits are 010, the indicated value is 2. In this embodiment, there is a correspondence between the value represented by the N bits and the indicated carrier, and when the terminal device has SL CSI to be transmitted on the first carrier, the value corresponding to the first carrier is determined, where the bit information corresponding to the value is the indication information. The correspondence may be a default rule, for example, the larger the number of N bits, the larger the carrier indicated by the N bits. For example, the terminal device performs side-link communication on 8 carriers, which are F1, F2...f8 in order from small to large, then the 8 carriers may be indicated by bits 000, 001, 010, 011, 100, 101, 110, 111 in order. When the terminal equipment has SL CSI to be transmitted in a certain carrier To transmit indication information containing corresponding bit information. For example, when the terminal device has SL CSI to be transmitted on carrier F2, the terminal device may transmit indication information carrying 001, i.e. the indication information is 001. It is understood that the correspondence between the values represented by the N bits and the indicated carriers may also be configured by the network device. In some embodiments, the network device may only configure a correspondence between a part of carriers in the multiple carriers in which the terminal device performs side link communication and the value represented by the N bits, for example, the terminal device performs side link communication (or may also be referred to as side link carrier aggregation) in F1, F2..

As another example, the value of N may also be the same as the value of Q, i.e. one of the N bits corresponds to one carrier, and the value of this bit may be used to indicate whether there is SL CSI to be transmitted on the corresponding carrier. For example, if the bit value is 0, it indicates that there is no SL CSI to be transmitted on the corresponding carrier, and if the bit value is 1, it indicates that there is SL CSI to be transmitted on the corresponding carrier.

As yet another example, the terminal device may have SL CSI to be transmitted on one carrier, i.e. the first carrier comprises one carrier, or on multiple carriers, i.e. the first carrier comprises multiple carriers. In order to facilitate that the indication information may indicate one carrier or may indicate a combination of multiple carriers, in this embodiment of the present application, the value of N may be determined according to the possibility of various combinations of Q carriers. For example, the value of Q is 8, the N bits may indicate a single carrier or a combination of two carriers, then the value of N may be log ₂ W is rounded upwards, wherein,i.e. 6 bits are required for indication. The 6 bits represent different values, and correspondingly indicate different carriers or carrier combinations. For example, 000000-000111 indicates any one carrier of 8 carriers, and 001000-100011 indicates two carrier combinations of 8 carriers, respectively. In this way, when the terminal device performs side link communication on a plurality of carriers, only one SR configuration may be required to indicate any one carrier or carrier combination.

In some embodiments, the presence of SL CSI to be transmitted on different numbers of carriers may also be indicated by different numbers of bits included in the indication information, e.g., if 3 bits are included in the indication information, the indication information indicates that there is SL CSI to be transmitted on one of the Q carriers. If the indication information contains 5 bits, the indication information indicates that there is SL CSI to be transmitted on two carriers of the Q carriers at the same time, and so on. It is understood that if the indication information is carried in an SR, the indication information including the number of bits may be an SR configured by different SR configurations, i.e. multiple SR configurations are required.

In some embodiments, the above indication information may be multiplexed with hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ) feedback information. The indication information may be transmitted on a first uplink transmission resource multiplexed with the HARQ feedback information, wherein the first uplink transmission resource may be a transmission resource allocated for the HARQ feedback information. For example, when the terminal device needs to send the indication information in the time slot n, the terminal device also needs to send HARQ feedback information in the time slot, where the HARQ feedback information may be HARQ feedback ACK/NACK for downlink data. The terminal device may determine one physical uplink control channel (Physical Uplink Control Channel, PUCCH) resource as a first uplink transmission resource so as to be able to simultaneously transmit the indication information and the HARQ feedback information. For example, the HARQ feedback information that the terminal device needs to feed back includes 1-bit HARQ ACK/NACK, and the indication information sent by the terminal device includes 3 bits, so that the terminal device needs to transmit 4 bits in total, for example, the 1 st bit is a bit of HARQ feedback, and the last 3 bits represent the indication information, which may be understood to be the first 3 bits to represent the indication information, and the last 1 bit to represent HARQ feedback. The terminal equipment determines a resource capable of bearing 4 bits from PUCCH resources configured by the network and capable of transmitting different bit lengths, and takes the resource as a first uplink transmission resource, and the 4-bit information is borne on the PUCCH resource in the time slot and is sent to the network. Correspondingly, the network device analyzes and obtains 4 bits, the network device can determine that the terminal device only needs to feed back 1-bit HARQ ACK/NACK in a time slot n through the scheduling information of the terminal device before, and the terminal device transmits 4-bit information, then the network device determines that the terminal device transmits 3-bit information representation indication information, and further can know on which carrier the terminal device has SL CSI to be transmitted through the 3-bit information, and can timely allocate side-link transmission resources for the terminal device on the carrier.

It is understood that the terminal device may have multiple data radio bearers (Data Radio Bearer, DRBs) over the Uu interface (i.e., the interface between the terminal device and the network device) for which the network device may configure different SRs. When the terminal device has data to be transmitted in a certain DRB, the terminal device may send a corresponding SR, which is referred to as a third SR for convenience of description, where the third SR is used to request the network device to allocate uplink transmission resources to transmit the data of the DRB. The third SR may also be multiplexed with the HARQ feedback information, so as to facilitate the network device to distinguish whether the DRB has the third SR triggered by data to be transmitted or the indication information triggered by SL CSI to be transmitted, where in the embodiment of the present application, the indication information and the number of bits carried in the third SR are different. For example, the indication information includes 3 bits, and the third SR may include 2 bits, or 4 bits.

In some embodiments, the indication information may be multiplexed with CSI of a downlink channel (may also be referred to as CSI of a Uu interface). CSI may be used to describe channel quality related information. For example, CSI describes the propagation effects of a wireless signal between a transmitter and a receiver, including the effects of distance, scattering, fading, etc. on the signal. For downlink transmission, the CSI of the downlink channel may be used for the terminal device to feed back the quality of the downlink channel to the network device, so that the network device performs, according to the CSI of the downlink channel, processing such as resource scheduling, beam management, mobility management, rate matching, and so on, to improve the communication quality. The CSI of the downlink channel sent by the terminal device to the network device may be carried in CSI reports (reports). For example, CSI for a downlink channel may include at least one of: CSI reference signal resource indicator (CSI-RS resource indicator, CRI), rank Indicator (RI), channel quality indicator (channel quality indicator, CQI), precoding matrix indicator (precoding matrix indicator, PMI), layer Indicator (LI), layer 1reference signal received power (layer 1reference signal received power,L1-RSRP), or layer 1 signal-to-interference-plus-noise ratio (layer 1signal-to-noise and interference ratio, L1-SINR).

For example, the indication information may be multiplexed with CSI of the downlink channel and transmitted on a second uplink transmission resource, where the second uplink transmission resource may be a transmission resource allocated for CSI of the downlink channel. For example, when the terminal device needs to transmit the indication information in the time slot n, the terminal device also needs to transmit CSI of the downlink channel in the time slot. The terminal device may determine one PUCCH resource as the second uplink transmission resource so as to be capable of simultaneously transmitting the indication information and CSI of the downlink channel.

In some embodiments, the third SR for requesting the network device to allocate uplink transmission resources to transmit data of the DRB may also be multiplexed with CSI of the downlink channel, so as to facilitate the network device to distinguish whether the DRB has the third SR triggered by data to be transmitted or the indication information of SL CSI trigger to be transmitted, where the number of bits carried in the indication information and the third SR in the embodiment of the present application is different. For example, the indication information includes 3 bits, and the third SR may include 2 bits, or 4 bits.

In some embodiments, the above indication information for indicating that the terminal device has the carrier of the SL CSI to be transmitted may be carried in a first SR, where the first SR may be a side link transmission resource for requesting the network device to allocate and transmit the SL CSI.

In one embodiment, the first SR may be a new SR configuration, where the new SR configuration is configured by the network device and includes 1 bit of information when the terminal device supports side link communication on one carrier, and for convenience of description, the new SR configuration is referred to as a first SR configuration, and the SR configuration including 1 bit of information configured by the network device when the terminal device supports side link communication on one carrier is referred to as a second SR configuration. When the terminal equipment performs side link communication on a plurality of carriers, the terminal equipment transmits the first SR according to the first SR configuration and ignores the second SR configuration transmitted by the network equipment. When the terminal device switches to (or backs to) side link communication on one carrier, the terminal device may in turn send a second SR according to a second SR configuration without requiring the network device to reconfigure the SR, the second SR comprising 1-bit information.

In a second alternative embodiment, the above indication information for indicating that the terminal device has SL CSI to be sent on the first carrier may be carried in a buffer status report (Buffer Status Report, BSR). As shown in fig. 3b, which is a schematic diagram of a BSR structure, the terminal device performs side-link communication on 8 carriers, which are F1, F2, and F3 … F8, respectively, and one bit is used to indicate one carrier. For example, if the first bit is 1, it indicates that there is SL CSI to be transmitted on carrier F1. It is understood that if the terminal device performs side-link communication on 16 carriers, the BSR may include 16 bits.

In some embodiments, before the terminal device sends the BSR carrying the indication information, the terminal device sends a second SR to the network device, where the second SR is used to request the network device to allocate uplink transmission resources. For compatibility with existing systems, the second SR may follow an SR configuration when the terminal device supports only side-link communication on one carrier, i.e. the second SR contains 1 bit of information. And when the network equipment receives the second SR, third uplink transmission resources are allocated to the terminal equipment, and the third uplink transmission resources are indicated to the terminal equipment through the second resource allocation information. And the terminal equipment sends the BSR carrying the indication information on the indicated third uplink transmission resource.

Compared with the prior BSR requesting resources in a side link scene, which needs to contain information such as the number of data bits to be transmitted and the like, a lot of bit overhead is needed, because the number of bits contained in SL CSI to be transmitted is relatively fixed, a simple BSR requesting resources in the side link scene is introduced, and the BSR does not need to indicate the number of data bits of the SL CSI but indicates the first carrier wave, thereby saving the bit overhead. The newly introduced BSR carrying the indication information has higher priority than the existing BSR containing the number of data bits to be transmitted, so that the newly introduced BSR is preferentially transmitted once the terminal equipment obtains uplink transmission resources.

302, the network device sends first resource allocation information in response to the indication information, where the first resource allocation information is used to indicate side link transmission resources allocated on the first carrier, and correspondingly, the terminal device receives the first resource allocation information.

In some embodiments, the network device may determine on which carrier or carriers the terminal device has SL CSI to send by the indication information. The network equipment allocates side link transmission resources on the corresponding carrier for the terminal equipment and indicates the side link transmission resources to the terminal equipment through the first resource allocation information.

303, the terminal device sends SL CSI on the side link transmission resources.

In some embodiments, the terminal device receives the first resource allocation information sent by the network device, and determines the side link transmission resource allocated by the network device according to the first resource allocation information. The terminal device transmits the SL CSI on the side link transmission resources. If there is still room for allocated side link transmission resources, the terminal device may transmit other side link data/signaling. In some congestion scenarios, the network device cannot allocate the side link transmission resources in time, and when the terminal device obtains the side link transmission resources, the SL CSI is outdated, and at this time, the terminal device can use the side link transmission resources to transmit other side link data/signaling.

In this embodiment of the present application, the terminal device may indicate, through the indication information, to the network device that the carrier wave of the SL CSI to be transmitted exists in the terminal device, where the terminal device receives first resource allocation information sent by the network device, where the first resource allocation information is used to indicate a side link transmission resource allocated by the network device on the carrier wave, and the terminal device sends the SL CSI on the allocated side link transmission resource. According to the embodiment of the application, the scene that the terminal equipment performs the side link communication on a plurality of carriers can be supported, when the terminal equipment has the SL CSI to be transmitted on one or a plurality of carriers, the corresponding carrier is indicated to the network equipment, and the network equipment is also convenient to allocate the side link transmission resources of the corresponding carrier.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application. The device may be a terminal device, or may be a device in a terminal device, for example, may be a chip or a chip module in the terminal device, or may be a device that can be matched with a terminal device for use. The communication apparatus 400 shown in fig. 4 may include a transmitting unit 401 and a receiving unit 402. Wherein:

a transmitting unit 401, configured to transmit, to a network device, indication information, where the indication information is used to indicate a carrier that needs to transmit side link channel state information SL CSI;

A receiving unit 402, configured to receive first resource allocation information sent by the network device, where the first resource allocation information is used to indicate side link transmission resources allocated on the carrier;

the sending unit 401 is further configured to send the SL CSI on the side link transmission resource.

In an alternative embodiment, the sending unit 401 is further configured to send a second SR to the network device, where the second SR is used to request the network device to allocate uplink transmission resources;

the receiving unit 402 is further configured to receive second resource allocation information sent by the network device, where the second resource allocation information is used to indicate a third uplink transmission resource;

The sending unit 401 is specifically configured to send a BSR carrying the indication information to the network device on the third uplink transmission resource.

The relevant content of the embodiment can be referred to the relevant content of the method embodiment. And will not be described in detail herein.

Referring to fig. 5, fig. 5 is a schematic structural diagram of another communication device according to an embodiment of the present application. The device may be a network device, or may be a device in a network device, for example, may be a chip or a chip module in the network device, or may be a device that can be matched with a network device for use. The communication apparatus 500 shown in fig. 5 may include a receiving unit 501 and a transmitting unit 502. Wherein:

a receiving unit 501, configured to receive indication information sent by a terminal device, where the indication information is used to indicate a carrier that needs to send side link channel state information SL CSI;

and a sending unit 502, configured to send, in response to the indication information, first resource allocation information to the terminal device, where the first resource allocation information is used to indicate side link transmission resources allocated on the carrier.

The receiving unit 501 is further configured to receive a second SR sent by the terminal device, where the second SR is used to request the network device to allocate uplink transmission resources;

the sending unit 502 is further configured to send, in response to the second SR, second resource allocation information to the terminal device, where the second resource allocation information is used to indicate a third uplink transmission resource;

the receiving unit is specifically configured to receive, on the third uplink transmission resource, a BSR carrying the indication information sent by the terminal device.

Referring to fig. 6, fig. 6 is a schematic structural diagram of another communication device according to an embodiment of the present application, which is configured to implement the functions of the terminal device in fig. 2. The communication device 600 may be a terminal device or a device for a terminal device. The means for the terminal device may be a chip system or a chip within the terminal device. The chip system may be composed of a chip or may include a chip and other discrete devices.

Alternatively, the communication device 600 is configured to implement the functions of the network device in fig. 2. The communication means may be a network device or means for a network device. The means for the network device may be a system-on-chip or a chip within the network device.

The communication apparatus 600 includes at least one processor 620 configured to implement a data processing function of a terminal device or a network device in the method provided in the embodiments of the present application. The apparatus 600 may further include a communication interface 610, configured to implement a transceiving operation of a terminal device or a network device in the method provided in the embodiment of the present application. In an embodiment of the present application, the processor 620 may be a central processing unit (Central Processing Unit, CPU), which may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSPs), application specific integrated circuits (Application Specific Integrated Circuit, ASICs), off-the-shelf programmable gate arrays (Field-Programmable Gate Array, FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. In the present embodiment, the communication interface 610 may be a transceiver, circuit, bus, module, or other type of communication interface for communicating with other devices over a transmission medium. For example, the communication interface 610 may be used to communicate with other devices in the communication apparatus 600. The processor 620 utilizes the communication interface 610 to transmit and receive data and is configured to implement the method described in fig. 2 in the method embodiment described above.

The communications apparatus 600 can also include at least one memory 630 for storing program instructions and/or data. Memory 630 is coupled to processor 620. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, which may be in electrical, mechanical, or other forms for information interaction between the devices, units, or modules. Processor 620 may operate in conjunction with memory 630. Processor 620 may execute program instructions stored in memory 630. At least one of the at least one memory may be included in the processor.

When the communication device 600 is powered on, the processor 620 may read the software program in the memory 630, interpret and execute instructions of the software program, and process data of the software program. When data needs to be transmitted wirelessly, the processor 620 performs baseband processing on the data to be transmitted, and outputs a baseband signal to a radio frequency circuit (not shown), and the radio frequency circuit performs radio frequency processing on the baseband signal and then transmits the radio frequency signal to the outside in the form of electromagnetic waves through an antenna. When data is transmitted to the apparatus 600, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 620, and the processor 620 converts the baseband signal into data and processes the data.

In another implementation, the rf circuitry and antenna may be provided separately from the baseband processing processor 620, for example, in a distributed scenario, the rf circuitry and antenna may be remotely located from the communication device.

The specific connection medium between the communication interface 610, the processor 620, and the memory 630 is not limited in the embodiments of the present application. In the embodiment of the present application, the memory 630, the processor 620 and the communication interface 610 are connected by a bus 640 in fig. 6, where the bus is indicated by a thick line in fig. 6, and the connection manner between other components is only schematically illustrated, and is not limited thereto. The buses may be classified as address buses, data buses, control buses, etc. For ease of illustration, only one thick line is shown in fig. 6, but not only one bus or one type of bus.

When the communication apparatus 600 is specifically used for a terminal device, for example, when the communication apparatus 600 is specifically a chip or a chip system, the baseband signal may be output or received by the communication interface 610. When the communication apparatus 600 is a terminal device, the radio frequency signal may be output or received by the communication interface 610.

It should be noted that, the communication device may execute the steps related to the terminal device or the network device in the foregoing method embodiment, and the implementation manner provided by each step may be referred to specifically, which is not described herein again.

For each device, product, or application to or integrated with a communication device, each module included in the device may be implemented by hardware such as a circuit, and different modules may be located in the same component (for example, a chip, a circuit module, or the like) or in different components in the terminal, or at least some modules may be implemented by using a software program, where the software program runs on a processor integrated in the terminal, and the remaining (if any) some modules may be implemented by hardware such as a circuit.

The memory may be 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 Programmable ROM (EPROM), an electrically erasable programmable ROM (electrically EPROM, EEPROM), or a flash memory, among others. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example but not limitation, many forms of random access memory (random access memory, RAM) are available, such as Static RAM (SRAM), dynamic RAM (dynamic random access memory, DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM).

The embodiment of the application provides a chip. The chip comprises: a processor and a memory. Wherein the number of processors may be one or more and the number of memories may be one or more. The processor, by reading the instructions and data stored on the memory, can perform the side-link communication method shown in fig. 2 and the steps performed by the related embodiments described above.

As shown in fig. 7, fig. 7 is a schematic structural diagram of a module device according to an embodiment of the present application. The module device 700 may perform the steps related to the terminal device or the network device in the foregoing method embodiment, where the module device 700 includes: a communication module 701, a power module 702, a memory module 703 and a chip module 704. Wherein the power module 702 is configured to provide power to the module device; the storage module 703 is used for storing data and/or instructions; the communication module 701 is used for communicating with external equipment; the chip module 704 is configured to invoke the data and/or instructions stored in the memory module 703, and in combination with the communication module 701, can perform the side link communication method as shown in fig. 2 and the steps performed by the related embodiments.

A computer-readable storage medium is also provided in an embodiment of the present application. The computer readable storage medium stores a computer program, where the computer program includes program instructions that, when executed by an electronic device, implement steps performed by a terminal device in the side-link communication method shown in fig. 2 or implement steps performed by a network device in the side-link communication method shown in fig. 2.

The computer readable storage medium may be an internal storage unit of the terminal device or the network device according to any of the foregoing embodiments, for example, a hard disk or a memory of the device. The computer readable storage medium may also be an external storage device of the terminal device or network device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a flash card (flash card) or the like, which are provided on the device. Further, the computer-readable storage medium may also include both an internal storage unit of the terminal device or the network device and an external storage device. The computer-readable storage medium is used to store the computer program and other programs and data required by the terminal device or network device. The computer-readable storage medium may also be used to temporarily store data that has been output or is to be output. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more sets of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., high-density digital video disc (digital video disc, DVD)), or a semiconductor medium. The semiconductor medium may be a solid state disk.

With respect to each of the apparatuses and each of the modules/units included in the products described in the above embodiments, it may be a software module/unit, a hardware module/unit, or a software module/unit, and a hardware module/unit. For example, for each device or product applied to or integrated on a chip, each module/unit included in the device or product may be implemented in hardware such as a circuit, or at least part of the modules/units may be implemented in software program, where the software program runs on a processor integrated inside the chip, and the rest (if any) of the modules/units may be implemented in hardware such as a circuit; for each device and product applied to or integrated in the chip module, each module/unit contained in the device and product can be realized in a hardware manner such as a circuit, different modules/units can be located in the same component (such as a chip, a circuit module and the like) or different components of the chip module, or at least part of the modules/units can be realized in a software program, the software program runs on a processor integrated in the chip module, and the rest (if any) of the modules/units can be realized in a hardware manner such as a circuit; for each device and product applied to or integrated in the data acquisition node, each module/unit contained in each device and product may be implemented in hardware such as a circuit, and different modules/units may be located in the same component (for example, a chip, a circuit module, etc.) or different components in the terminal, or at least part of the modules/units may be implemented in a software program, where the software program runs on a processor integrated in the data acquisition node, and the rest (if any) of the modules/units may be implemented in hardware such as a circuit.

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions described in accordance with the embodiments of the present application are all or partially produced. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired or wireless means.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

In the several embodiments provided in the present application, it should be understood that the disclosed method, apparatus, and system may be implemented in other manners. For example, the device embodiments described above are merely illustrative; for example, the division of the units is only one logic function division, and other division modes can be adopted in actual implementation; for example, multiple units or components may be combined or may be 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 the embodiments of the present invention may be integrated in one processing unit, or each unit may be physically included separately, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in hardware plus software functional units.

The integrated units implemented in the form of software functional units described above may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a gateway node, etc.) to perform part of the steps of the method according to the embodiments of the present invention.

Those skilled in the art will appreciate that implementing all or part of the above-described methods in accordance with the embodiments may be accomplished by way of a computer program stored on a computer readable storage medium, which when executed may comprise the steps of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), or the like.

The foregoing disclosure is only a preferred embodiment of the present application, and it is not intended to limit the scope of the claims, and one of ordinary skill in the art will understand that all or part of the processes for implementing the embodiments described above may be performed with equivalent changes in the claims of the present application and still fall within the scope of the claims.

Claims

1. A side link communication method, comprising:

and transmitting the SL CSI on the side chain transmission resource.

2. The method of claim 1, wherein the indication information is carried in a first scheduling request, SR, requesting network equipment to allocate side link transmission resources for transmission of SL CSI.

3. The method of claim 2, wherein the indication information comprises N bits in the first SR, the N being an integer greater than or equal to 2.

4. The method of claim 3, wherein the value of N is determined according to the number of carriers for side link communication by the terminal device, and the carriers for side link communication by the terminal device include the carriers for which the SL CSI to be transmitted is present.

5. The method of claim 4, wherein there is a correspondence between the values represented by the N bits and the indicated carrier;

6. The method according to any of claims 2-5, wherein the first SR is multiplexed with hybrid automatic repeat request, HARQ, feedback information for transmission on a first uplink transmission resource, the first uplink transmission resource being a transmission resource allocated for the HARQ feedback information.

7. The method of any of claims 2-5, wherein the first SR is multiplexed with CSI of a downlink channel for transmission on a second uplink transmission resource, the second uplink transmission resource being a transmission resource allocated for CSI of the downlink channel.

8. The method of claim 1, wherein the indication information is carried in a data buffer status report, BSR.

9. The method of claim 8, wherein the indication information comprises M bits in the BSR, the M being an integer greater than or equal to 1.

10. The method of claim 9, wherein each of the M bits is used to indicate whether there is SL CSI to send on a different carrier, respectively.

11. The method of any one of claims 8-10, wherein the method further comprises:

the sending indication information to the network device includes:

12. A side link communication method, comprising:

13. The method of claim 12, wherein the indication information is carried in a first scheduling request, SR, requesting network devices to allocate sidelink transmission resources for transmission of SL CSI.

14. The method of claim 13, wherein the indication information comprises N bits in the first SR, the N being an integer greater than or equal to 2.

15. The method of claim 14, wherein the value of N is determined according to the number of carriers for side link communication by the terminal device, and the carriers for side link communication by the terminal device include the carriers for which the SL CSI to be transmitted is present.

16. The method of claim 15, wherein there is a correspondence between the values represented by the N bits and the indicated carrier;

17. The method according to any of claims 13-16, wherein the first SR is multiplexed with hybrid automatic repeat request, HARQ, feedback information for transmission on a first uplink transmission resource, the first uplink transmission resource being a transmission resource allocated for the HARQ feedback information.

18. The method of any of claims 13-16, wherein the first SR is multiplexed with CSI of a downlink channel for transmission on a second uplink transmission resource, the second uplink transmission resource being a transmission resource allocated for CSI of the downlink channel.

19. The method of claim 12, wherein the indication information is carried in a data buffer status report, BSR.

20. The method of claim 19, wherein the indication information comprises M bits in the BSR, the M being an integer greater than or equal to 1.

21. The method of claim 20, wherein each of the M bits is used to indicate whether there is SL CSI to send on a different carrier, respectively.

22. The method of any one of claims 19-21, wherein the method further comprises:

23. A communication device, comprising:

a sending unit, configured to send indication information to a network device, where the indication information is used to indicate a carrier wave that needs to send side link channel state information SL CSI;

A receiving unit, configured to receive first resource allocation information sent by the network device, where the first resource allocation information is used to indicate side link transmission resources allocated on the carrier;

the sending unit is further configured to send the SL CSI on the side link transmission resource.

24. A communication device, comprising:

a receiving unit, configured to receive indication information sent by a terminal device, where the indication information is used to indicate a carrier wave that needs to send side link channel state information SL CSI;

and the sending unit is used for responding to the indication information and sending first resource allocation information to the terminal equipment, wherein the first resource allocation information is used for indicating side chain transmission resources allocated on the carrier.

25. A communication device comprising a processor and a memory, the processor and the memory being interconnected, wherein the memory is adapted to store a computer program, the computer program comprising program instructions, the processor invoking the program instructions to perform the method of any of claims 1-12 or to perform the method of any of claims 13-24.

26. A chip comprising a processor and an interface, the processor and the interface coupled; the interface is for receiving or outputting signals, the processor is for executing code instructions, performing the method of any of claims 1 to 12, or performing the method of any of claims 13 to 24.

27. The utility model provides a module equipment, its characterized in that, module equipment includes communication module, power module, storage module and chip module, wherein:

the power supply module is used for providing electric energy for the module equipment;

the storage module is used for storing data and/or instructions;

the communication module is used for communicating with external equipment;

the chip module is configured to invoke data and/or instructions stored by the memory module, perform the method according to any of claims 1 to 12, or perform the method according to any of claims 13 to 24 in combination with the communication module.

28. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program comprising program instructions which, when executed by an electronic device, implement the method of any one of claims 1 to 12 or the method of any one of claims 13 to 24.