CN112438029A

CN112438029A - Method, terminal, chip and storage medium for feeding back information

Info

Publication number: CN112438029A
Application number: CN201980044740.6A
Authority: CN
Inventors: 赵振山; 卢前溪; 林晖闵
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-08-10
Filing date: 2019-01-25
Publication date: 2021-03-02
Anticipated expiration: 2039-01-25
Also published as: WO2020029558A1; WO2020029287A1; CN116366222A; CN112438029B; TW202013995A

Abstract

A method, terminal, chip and storage medium for feeding back information are provided. The method comprises the following steps: a first terminal sends a channel to a second terminal; the first terminal determines the information type and/or the information bit number of the feedback information of the channel sent by the second terminal; and the first terminal receives the feedback information sent by the second terminal according to the information type and/or the information bit number of the feedback information. In the embodiment of the application, after the first terminal sends the channel to the second terminal, the feedback information of the channel sent by the second terminal can effectively assist the first terminal in sending data, so that the data interaction efficiency between the first terminal and the second terminal is improved.

Description

Method, terminal, chip and storage medium for feeding back information

Technical Field

The embodiments of the present application relate to the field of communications, and more particularly, to a method, a terminal, a chip, and a storage medium for feeding back information.

Background

The Vehicle networking system is a Sidelink (SL) transmission technology based on a Long Term evolution Vehicle to Vehicle (LTE V2V), and is different from a mode that communication data in a traditional LTE system is received or sent through a base station, and the Vehicle networking system adopts a mode of direct terminal-to-terminal communication, so that the Vehicle networking system has higher spectral efficiency and lower transmission delay.

In New Radio (NR) -V2X, higher requirements are placed on data interaction between vehicles because of the need to support autonomous driving.

Therefore, how to improve the data interaction efficiency between vehicles is a technical problem which needs to be solved urgently in the field.

Disclosure of Invention

The method, the terminal, the chip and the storage medium for feeding back the information are provided, and the data interaction efficiency between the terminal and the terminal in the Internet of vehicles can be effectively improved.

In a first aspect, a method for feeding back information is provided, including:

a first terminal sends a channel to a second terminal;

the first terminal determines the information type and/or the information bit number of the feedback information of the channel sent by the second terminal;

and the first terminal receives the feedback information sent by the second terminal according to the information type and/or the information bit number of the feedback information.

In some possible implementations, the information type of the feedback information includes at least one of the following information:

acknowledgement ACK, non-acknowledgement NACK, channel state information CSI, power information and beam information.

In some possible implementations, the determining, by the first terminal, an information type and/or an information bit number of the feedback information of the channel sent by the second terminal includes:

the first terminal receives first indication information sent by the second terminal, wherein the first indication information is used for the first terminal to determine the information type of the feedback information and/or the information bit number of the feedback information;

and the first terminal determines the information type and/or the information bit number of the feedback information according to the first indication information.

In some possible implementations, the first indication information is used to indicate a target index value corresponding to an information type of the feedback information.

the first terminal determines an information type corresponding to the target index value according to the first indication information and a first mapping relation, wherein the first mapping relation comprises a corresponding relation between at least one index value and at least one information type, and the at least one index value comprises the target index value;

and the first terminal determines the information type corresponding to the target index value as the information type of the feedback information.

In some possible implementations, the method further includes:

and the first terminal determines the information bit number of the feedback information according to the information type of the feedback information.

In some possible implementations, the information type corresponding to the target index value includes one or more information types.

In some possible implementations, the first mapping relationship is pre-configuration information, or the first mapping relationship is network configuration information.

In some possible implementations, the first indication information is used to indicate an information bit number of the feedback information.

In some possible implementations, the first indication information is used to indicate a target format corresponding to an information bit number of the feedback information.

the first terminal determines the information bit number corresponding to the target format according to the first indication information and a second mapping relation, wherein the second mapping relation comprises the corresponding relation between at least one format and at least one information bit number, and the at least one format comprises the target format;

and the first terminal determines the information bit number corresponding to the target format as the information bit number of the feedback information.

In some possible implementations, the number of information bits corresponding to each of the at least one format includes a number of information bits of one information type or a sum of numbers of information bits of a plurality of information types.

In some possible implementations, the second mapping relationship is pre-configuration information, or the second mapping relationship is network configuration information.

the first terminal determines the information type of the feedback information corresponding to the target format according to the first indication information and a third mapping relation, wherein the third mapping relation comprises a corresponding relation between at least one format and at least one information type, and the at least one format comprises the target format;

and the first terminal determines the information type corresponding to the target format as the information type of the feedback information.

In some possible implementations, the information type corresponding to each of the at least one format includes one or more information types.

In some possible implementations, the third mapping relationship is pre-configuration information, or the third mapping relationship is network configuration information.

In some possible implementation manners, the receiving, by the first terminal, the first indication information sent by the second terminal includes:

and the first terminal receives sideline control information SCI sent by the second terminal, wherein the SCI comprises the first indication information.

In some possible implementations, the method further includes:

the first terminal generates second indication information according to the information type and/or the information bit number of the feedback information, wherein the second indication information is used for the second terminal to determine the information type and/or the information bit number of the feedback information;

and the first terminal sends the second indication information to the second terminal.

In some possible implementations, the second indication information is used to indicate a target index value corresponding to an information type of the feedback information.

In some possible implementation manners, the generating, by the first terminal, second indication information according to the information type and/or the information bit number of the feedback information includes:

the first terminal determines a target index value corresponding to the information type of the feedback information according to the information type of the feedback information and a fourth mapping relation, wherein the fourth mapping relation comprises a corresponding relation between at least one index value and at least one information type, and the at least one index value comprises the target index value;

and the first terminal generates the second indication information according to the target index value corresponding to the information type of the feedback information.

In some possible implementations, the fourth mapping relationship is pre-configuration information, or the fourth mapping relationship is network configuration information.

In some possible implementations, the second indication information is used to indicate an information bit number of the feedback information.

In some possible implementations, the second indication information is used to indicate a target format corresponding to an information type and/or an information bit number of the feedback information.

the first terminal determines a target format corresponding to the information type of the feedback information according to the information type of the feedback information and a fifth mapping relation, wherein the fifth mapping relation comprises a corresponding relation between at least one format and at least one information type, and the at least one format comprises the target format;

and the first terminal generates the second indication information according to a target format corresponding to the information type of the feedback information.

In some possible implementations, the fifth mapping relationship is pre-configuration information, or the fifth mapping relationship is network configuration information.

the first terminal determines a target format corresponding to the information bit number of the feedback information according to the information bit number of the feedback information and a sixth mapping relation, wherein the sixth mapping relation comprises a corresponding relation between at least one format and at least one information bit number, and the at least one format comprises the target format;

and the first terminal generates the second indication information according to a target format corresponding to the information bit number of the feedback information.

In some possible implementations, the information bit number of the feedback information includes information bit numbers corresponding to one or more information types.

In some possible implementations, the sixth mapping relationship is pre-configuration information, or the sixth mapping relationship is network configuration information.

In some possible implementations, the sending, by the first terminal, the second indication information to the second terminal includes:

and the first terminal sends collateral control information SCI to the second terminal, wherein the SCI comprises the second indication information.

In a second aspect, a method for feeding back information is provided, the method comprising:

the second terminal receives the channel sent by the first terminal;

the second terminal determines the information type and/or the information bit number of the feedback information of the channel;

and the second terminal generates and sends the feedback information to the first terminal according to the information type and/or the information bit number of the feedback information.

In some possible implementations, the method further includes:

the second terminal generates first indication information according to the information type and/or the information bit number of the feedback information, wherein the first indication information is used for the first terminal to determine the information type and/or the information bit number of the feedback information;

and the second terminal sends the first indication information to the first terminal.

In some possible implementation manners, the generating, by the second terminal, first indication information according to the information type and/or the information bit number of the feedback information includes:

the second terminal determines the target index corresponding to the information type of the feedback information according to the information type of the feedback information and a first mapping relation, wherein the first mapping relation comprises a corresponding relation between at least one index value and at least one information type, and the at least one index value comprises the target index value;

and the second terminal generates the first indication information according to the target index corresponding to the information type of the feedback information.

In some possible implementations, the method further includes:

and the second terminal determines the information bit number of the feedback information according to the information type of the feedback information.

In some possible implementations, the first indication information is used to indicate a target format corresponding to an information type and/or an information bit number of the feedback information.

the second terminal determines the target format corresponding to the information bit number of the feedback information according to the information bit number of the feedback information and a second mapping relation, wherein the second mapping relation comprises a corresponding relation between at least one format and at least one information bit number, and the at least one format comprises the target format;

and the second terminal generates the first indication information according to the target format corresponding to the information bit number of the feedback information.

the second terminal determines the target format corresponding to the information type of the feedback information according to the information type of the feedback information and a third mapping relation, wherein the third mapping relation comprises a corresponding relation between at least one format and at least one information type, and the at least one format comprises the target format;

and the second terminal generates the first indication information according to the target format corresponding to the information type of the feedback information.

In some possible implementations, the sending, by the second terminal, the first indication information to the first terminal includes:

and the second terminal sends sideline control information SCI to the first terminal, wherein the SCI comprises the first indication information.

In some possible implementations, the determining, by the second terminal, the information type and/or the information bit number of the feedback information of the channel includes:

the second terminal receives second indication information sent by the first terminal, wherein the second indication information is used for the second end to determine the information type of the feedback information and/or the information bit number of the feedback information;

and the second terminal determines the information type and/or the information bit number of the feedback information according to the second indication information.

the second terminal determines an information type corresponding to the target index value according to the second indication information and a fourth mapping relation, wherein the fourth mapping relation comprises a corresponding relation between at least one index value and at least one information type, and the at least one index value comprises the target index value;

and the second terminal determines the information type corresponding to the target index value as the information type of the feedback information.

the second terminal determines an information type corresponding to a target format according to the second indication information and a fifth mapping relation, wherein the fifth mapping relation comprises a corresponding relation between at least one format and at least one information type, and the at least one format comprises the target format;

and the second terminal determines the information type corresponding to the target format as the information type of the feedback information.

the second terminal determines the information bit number corresponding to the target format according to the second indication information and a sixth mapping relation, wherein the sixth mapping relation comprises a corresponding relation between at least one format and at least one information bit number, and the at least one format comprises the target format;

and the second terminal determines the information bit number corresponding to the target format as the information bit number of the feedback information.

In some possible implementation manners, the receiving, by the second terminal, the second indication information sent by the first terminal includes:

and the second terminal receives the sideline control information SCI sent by the first terminal, wherein the SCI comprises the second indication information.

In a third aspect, a terminal device is provided, configured to perform the method of any one of the above first to second aspects or the method in any one of the above possible implementation manners.

In some possible implementations, the terminal device includes:

functional modules for performing the method of any of the above first to second aspects or the method of any of the above possible implementations.

In some possible implementation manners, the terminal device is a first terminal, and the first terminal is configured to execute the method in the first aspect or any one of the possible implementation manners of the first aspect.

In some possible implementations, the terminal device is a second terminal, and the second terminal is configured to execute the method in the foregoing second aspect or any one of the possible implementations of the foregoing second aspect.

In a fourth aspect, a terminal device is provided, which includes:

a processor configured to retrieve from the memory and execute a computer program configured to perform the method of any of the first to second aspects or any of the possible implementations.

In some possible implementation manners, the terminal device further includes:

a memory for storing the computer program.

In a fifth aspect, a chip is provided for performing the method of any one of the above first to second aspects or the method in any possible implementation manner.

In some possible implementations, the chip includes:

In some possible implementations, the chip further includes:

a memory for storing the computer program.

A sixth aspect provides a computer readable storage medium for storing a computer program for performing the method of any of the above first to second aspects or the method of any of the above possible implementations.

In a seventh aspect, a computer program product is provided, comprising computer program instructions for executing the method of any of the first to second aspects above or the method of any of the possible implementations above.

In an eighth aspect, there is provided a computer program product which, when run on a computer, causes the computer to perform the method of any of the above first to second aspects or the method of any of the above possible implementations.

Based on the scheme, after the first terminal sends the channel to the second terminal, the feedback information of the channel sent by the second terminal can effectively assist the first terminal in sending data, and further improve the data interaction efficiency between the first terminal and the second terminal.

Drawings

Fig. 1 is a schematic block diagram of a transmission mode of an embodiment of the present application.

Fig. 2 is a schematic block diagram of another transmission mode of the embodiment of the present application.

Fig. 3 is a schematic flow chart of a method of feeding back information according to an embodiment of the present application.

Fig. 4 is another schematic flow chart of a method of feeding back information according to an embodiment of the present application.

Fig. 5 is a further schematic flow chart of a method of feeding back information according to an embodiment of the present application.

Fig. 6 to 8 are examples of types or formats of the sidelink feedback channel according to an embodiment of the present application.

Fig. 9 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Fig. 10 is another schematic block diagram of a terminal device according to an embodiment of the present application.

Fig. 11 is a schematic block diagram of a chip of an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

The embodiment of the application can be applied to any terminal equipment-to-terminal equipment communication framework.

For example, Vehicle to Vehicle (V2V), Vehicle to other devices (V2X), terminal to terminal (Device to Device, D2D), etc.

The terminal in this embodiment may be any device or apparatus configured with a physical layer and a media access control layer, and the terminal device may also be referred to as an access terminal. Such as a User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, User terminal, wireless communication device, User agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other linear processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, or the like. The embodiment of the present application takes the in-vehicle terminal as an example for explanation, but is not limited to this.

Optionally, in some embodiments of the present application, embodiments of the present application may be applicable to transmission mode 3 and transmission mode 4 defined in the third Generation Partnership Project (3 GPP) Rel-14.

Fig. 1 is a schematic view of mode 3 of the embodiment of the present application. Fig. 2 is a schematic diagram of mode 4 of the embodiment of the present application.

In transmission mode 3 shown in fig. 1, transmission resources of in-vehicle terminals (in-vehicle terminal 121 and in-vehicle terminal 122) are allocated by base station 110, and the in-vehicle terminals perform data transmission on a sidelink according to the resources allocated by 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.

In the transmission mode 4 shown in fig. 2, the vehicle-mounted terminals (vehicle-mounted terminal 131 and vehicle-mounted terminal 132) adopt a transmission mode of listening (sending) and reserving (reserving), and the vehicle-mounted terminals autonomously select transmission resources on resources of the sidelink for data transmission.

The following specifically describes the in-vehicle terminal 131 as an example.

The vehicle-mounted terminal 131 acquires an available transmission resource set in the resource pool in a listening manner, and the vehicle-mounted terminal 131 randomly selects a resource from the set to transmit data.

Since the service in the car networking system has a periodic characteristic, in this embodiment of the application, the car terminal 131 may also adopt a semi-static transmission mode. That is, after one transmission resource is taken by in-vehicle terminal 131, the resource is continuously used in a plurality of transmission cycles, so as to reduce the probability of resource reselection and resource collision.

Further, the vehicle-mounted terminal 131 may carry information of the reserved secondary transmission resource in the control information transmitted this time, so that other terminals (for example, the vehicle-mounted terminal 132) may determine whether the resource is reserved and used by the user by detecting the control information of the user, thereby achieving the purpose of reducing resource conflict.

It should be noted that the vehicle-mounted terminal related in the embodiment of the present application may be applied to a scene with high data interaction efficiency, such as automatic driving.

In the embodiment of the application, in order to improve the data interaction efficiency between the terminals of the internet of vehicles, the feedback information is sent to the sending end through the receiving end so as to assist the sending end to send data, and further the data interaction efficiency between the sending end and the receiving end is improved.

Fig. 3 is a schematic flow chart diagram of a method 200 of feeding back information according to an embodiment of the present application. The method 200 may be performed by a terminal. The first terminal shown in fig. 3 may be the in-vehicle terminal 121 shown in fig. 1, and the second terminal shown in fig. 3 may be the in-vehicle terminal 122 shown in fig. 1. Similarly, the first terminal shown in fig. 3 may be the in-vehicle terminal 131 shown in fig. 2, and the second terminal shown in fig. 3 may be the in-vehicle terminal 132 shown in fig. 2. The method 200 includes some or all of the following:

the first terminal sends 210 a channel to the second terminal.

220, the first terminal receives the feedback information of the channel sent by the second terminal.

Specifically, a first terminal sends a channel to a second terminal; the first terminal determines the information type and/or the information bit number of the feedback information of the channel sent by the second terminal; and the first terminal receives the feedback information sent by the second terminal according to the information type and/or the information bit number of the feedback information.

As shown above, the feedback information in the embodiment of the present application may include at least one of the following information types:

acknowledgement (ACK), non-acknowledgement (NACK), Channel State Information (CSI), and beam information.

In the embodiment of the application, the first terminal can determine whether retransmission is needed and an appropriate MCS and a beam are selected by sending a channel to the second terminal and receiving the feedback information of the channel sent by the second terminal, so that the data interaction efficiency between the first terminal and the second terminal can be effectively improved.

The first terminal and/or the second terminal in the embodiment of the present application may support various transmission modes.

Examples of the transmission method include a unicast (unicast) transmission method, a multicast (groupcast) transmission method, and a broadcast (broadcast) transmission method.

Taking the unicast transmission mode as an example, during unicast transmission, the second terminal may feed back information such as acknowledgement/non-acknowledgement (ACK/NACK) to the first terminal, so that the first terminal may determine whether retransmission is required according to the feedback information of the second terminal.

The second terminal in this embodiment may also estimate a state of a channel and feed back the state to the first terminal, so that the first terminal selects an appropriate Modulation and Coding Scheme (MCS) according to the feedback information to perform data transmission.

For example, the first terminal may select an appropriate Modulation and Coding Scheme (MCS) according to Channel State Information (CSI) of a Channel sent by the second terminal for data transmission.

The second terminal in the embodiment of the present application may further estimate the received transmission power of the first terminal, compare the estimated transmission power with a required demodulation threshold to obtain a power adjustment parameter, and feed back the power adjustment parameter to the first terminal; the first terminal may perform power adjustment according to the power adjustment parameter fed back by the second terminal.

The terminal in the embodiment of the present application may also support high carrier frequency transmission (carrier frequency >6 GHz).

The high carrier frequency causes great path loss, and further reduces the transmission range. In the embodiment of the present application, the coverage and reliability can be improved by Beamforming (Beamforming).

Specifically, the first terminal performs beam scanning, and respectively transmits using different beams, and the second terminal receives data transmitted by each beam, so that a beam with the best transmission quality can be selected as an optimal beam, and an index value of the beam is fed back to the first terminal, and in subsequent data transmission, the first terminal can perform data transmission with the second terminal using the optimal beam.

As can be seen from the above analysis, the information that the second terminal can feed back to the first terminal includes but is not limited to: acknowledgement (ACK), non-acknowledgement (NACK), Channel State Information (CSI), power information, and beam information.

Optionally, in some embodiments of the present application, the second terminal may feed back Acknowledgement (ACK), non-acknowledgement (NACK), Channel State Information (CSI), power information, and beam information separately to the first terminal.

Optionally, in some embodiments of the present application, the second terminal may feed back some or all of Acknowledgement (ACK), non-acknowledgement (NACK), Channel State Information (CSI), power information, and beam information to the first terminal in a combined manner.

It can be seen that, when a first terminal may combine and feed back some or all of Acknowledgement (ACK), non-acknowledgement (NACK), Channel State Information (CSI), power information, and beam information to the first terminal, since the size of information bits of feedback information is variable, a second terminal and the first terminal need to determine the size of the feedback information so that the second terminal generates the feedback information, and the first terminal receives the feedback information by decoding according to the size of the feedback information.

Fig. 4 is a schematic flow chart diagram of a method 300 of feeding back information according to an embodiment of the present application. The method 300 may be performed by a terminal. The first terminal shown in fig. 4 may be the in-vehicle terminal 121 shown in fig. 1, and the second terminal shown in fig. 4 may be the in-vehicle terminal 122 shown in fig. 1. Similarly, the first terminal shown in fig. 4 may be the in-vehicle terminal 131 shown in fig. 2, and the second terminal shown in fig. 4 may be the in-vehicle terminal 132 shown in fig. 2. The method 300 includes some or all of the following:

the first terminal sends a channel to the second terminal 310.

320, the second terminal generates first indication information, the first indication information is used for the first terminal to determine the information type and/or the information bit number of the feedback information

330, the second terminal sends the first indication information to the first terminal.

340, the first terminal determines the information type and/or the information bit number of the feedback information according to the first indication information.

350, the first terminal receives the feedback information sent by the second terminal according to the information type and/or the information bit number of the feedback information.

In this embodiment of the present application, the first terminal receives first indication information sent by the second terminal, where the first indication information is used by the first terminal to determine an information type of the feedback information and/or an information bit number of the feedback information; the first terminal determines the information type and/or the information bit number of the feedback information according to the first indication information; and the first terminal receives the feedback information according to the information type and/or the information bit number of the feedback information. The second terminal generates first indication information according to the information type and/or the information bit number of the feedback information, wherein the first indication information is used for the first terminal to determine the information type and/or the information bit number of the feedback information; and the second terminal sends the first indication information to the first terminal.

Optionally, in some embodiments of the present application, the first indication information is used to indicate a target index value corresponding to an information type of the feedback information.

Optionally, in some embodiments of the present application, the first terminal determines, according to the first indication information and a first mapping relationship, an information type corresponding to the target index value, where the first mapping relationship includes a corresponding relationship between at least one index value and at least one information type, and the at least one index value includes the target index value; and the first terminal determines the information type corresponding to the target index value as the information type of the feedback information.

In other words, the second terminal determines the target index corresponding to the information type of the feedback information according to the information type of the feedback information and a first mapping relationship, where the first mapping relationship includes a corresponding relationship between at least one index value and at least one information type, and the at least one index value includes the target index value; and the second terminal generates the first indication information according to the target index corresponding to the information type of the feedback information.

For example, if the second terminal determines that a/N feedback is needed, the type of a/N information is indicated to the first terminal, e.g., 1 bit indicates that the feedback channel feeds back a/N information.

For another example, if the second terminal determines that a/N and CSI information needs to be fed back, the two information types are indicated to the first terminal, for example, 2 bits indicate that a/N and CSI information need to be fed back (1 bit corresponds to a/N information, and 1 bit corresponds to CSI information).

In this embodiment of the present application, the second terminal can indicate the information type of the feedback information of the first terminal through the first mapping relationship.

In the following, a table format is taken as an example, and a target index value corresponding to an information type in which the indication information of the embodiment of the present application is used to indicate the feedback information is described.

TABLE 1 first mapping relation Table

Index value	Feedback information
0	A/N
1	CSI
2	Beam information
3	A/N+CSI
4	A/N + beam information
5	CSI + beam information
6	A/N + CSI + beam information
7	Without feedback

As can be seen from table 1, the first mapping relationship includes index values and information types of feedback information corresponding to the index values, where index values 0 to 6 correspond to different feedback information respectively, and index value 7 indicates that no feedback is required.

Specifically, the second terminal determines the type of the information to be fed back, and carries an index value corresponding to the type of the information to be fed back in the indication information. The first terminal determines the information type of the feedback information fed back by the second terminal according to the index value and the first mapping relation; and the first terminal determines the bit number of the feedback information according to the information type of the feedback information, and receives the feedback information according to the bit number of the feedback information.

Optionally, in some embodiments of the present application, the position or order of various ones of the feedback information may be predefined.

Optionally, the position or the order of various information types in the feedback information in the embodiment of the present application may be predefined.

Optionally, in some embodiments of the present application, the first terminal determines an information bit number of the feedback information according to an information type of the feedback information. And the second terminal determines the information bit number of the feedback information according to the information type of the feedback information.

Optionally, in some embodiments of the present application, the information type corresponding to the target index value includes one or more information types.

Optionally, in some embodiments of the present application, the first mapping relationship is pre-configuration information, or the first mapping relationship is network configuration information. Further, the first mapping relationship is configured by the network through broadcast information, radio resource control information (RRC), or downlink control signaling.

Optionally, in some embodiments of the present application, the first indication information is used to indicate an information bit number of the feedback information.

Optionally, in some embodiments of the present application, the first indication information is used to indicate a target format corresponding to an information type and/or an information bit number of the feedback information.

Optionally, in some embodiments of the present application, the first terminal determines, according to the first indication information and a second mapping relationship, an information bit number corresponding to the target format, where the second mapping relationship includes a correspondence relationship between at least one format and at least one information bit number, and the at least one format includes the target format; and the first terminal determines the information bit number corresponding to the target format as the information bit number of the feedback information.

In other words, the second terminal determines the target format corresponding to the information bit number of the feedback information according to the information bit number of the feedback information and a second mapping relationship, where the second mapping relationship includes a corresponding relationship between at least one format and at least one information bit number, and the at least one format includes the target format; and the second terminal generates the first indication information according to the target format corresponding to the information bit number of the feedback information.

Optionally, in some embodiments of the present application, the information bit number corresponding to each of the at least one format includes an information bit number of one information type or a sum of information bit numbers of a plurality of information types.

For example, assuming that 4 feedback channel formats are predefined, the information bit numbers of the feedback information corresponding to

formats

0, 1, 2, and 3 are 1, 2, 5, and 10, respectively. The second terminal determines that the bit number of the information to be fed back is 2 bits, selects format 1 and indicates the format 1 to the first terminal through 2 bits (for example, 01); if the second terminal determines that the number of information bits to be fed back is 10 bits, format 3 is selected and indicated to the first terminal by 2 bits (e.g., 11).

Optionally, in some embodiments of the present application, the second mapping relationship is pre-configuration information, or the second mapping relationship is network configuration information. Further, the second mapping relationship is configured by the network through broadcast information, radio resource control information (RRC), or downlink control signaling.

Optionally, in some embodiments of the present application, the first terminal determines, according to the first indication information and a third mapping relationship, an information type of the feedback information corresponding to the target format, where the third mapping relationship includes a correspondence relationship between at least one format and at least one information type, and the at least one format includes the target format; and the first terminal determines the information type corresponding to the target format as the information type of the feedback information.

In other words, the second terminal determines the target format corresponding to the information type of the feedback information according to the information type of the feedback information and a third mapping relationship, where the third mapping relationship includes a correspondence relationship between at least one format and at least one information type, and the at least one format includes the target format; and the second terminal generates the first indication information according to the target format corresponding to the information type of the feedback information.

Optionally, in some embodiments of the present application, the information type corresponding to each of the at least one format includes one or more information types.

Optionally, in some embodiments of the present application, the third mapping relationship is pre-configuration information, or the third mapping relationship is network configuration information. Further, the third mapping relationship is configured by the network through broadcast information, radio resource control information (RRC), or downlink control signaling.

Optionally, in some embodiments of the present application, the first terminal receives sideline control information SCI sent by the second terminal, where the SCI includes the first indication information. In other words, the first indication information is carried within the sideline control information SCI. It should be understood that the embodiment of the present application only exemplifies that the first indication information is included in the SCI, but the embodiment of the present application is not limited thereto. For example, in other alternative embodiments, the first indication information may also be carried in a Physical Sidelink Control Channel (PSCCH).

The method of feeding back information according to the embodiment of the present application is described in detail above with reference to fig. 4 from the perspective of indicating the information type and/or the information bit of the feedback information by the second terminal to the first terminal, and will be described below with reference to fig. 5 from the perspective of indicating the second terminal by the first terminal.

Fig. 5 is a schematic flow chart diagram of a method 400 of feeding back information according to an embodiment of the present application. The method 400 may be performed by a terminal. The first terminal shown in fig. 5 may be the in-vehicle terminal 121 shown in fig. 1, and the second terminal shown in fig. 5 may be the in-vehicle terminal 122 shown in fig. 1. Similarly, the first terminal shown in fig. 5 may be the in-vehicle terminal 131 shown in fig. 2, and the second terminal shown in fig. 5 may be the in-vehicle terminal 132 shown in fig. 2. The method 400 includes some or all of the following:

the first terminal sends 410 a channel to the second terminal.

And 420, the first terminal generates second indication information, and the second indication information is used for the second terminal to determine the information type and/or the information bit number of the feedback information of the channel.

430, the first terminal sends the indication information to the second terminal.

And 440, the second terminal determines the information type and/or the information bit number of the feedback information of the channel according to the second indication information.

450, the second terminal generates and sends the feedback information of the channel to the first terminal according to the information type and/or the information bit number of the feedback information.

Specifically, before the first terminal receives the feedback information sent by the second terminal, the first terminal needs to generate indication information and send the indication information to the second terminal.

Optionally, in some embodiments of the present application, the second indication information is used to indicate a target index value corresponding to an information type of the feedback information.

Optionally, in some embodiments of the present application, the first terminal determines, according to an information type of the feedback information and a fourth mapping relationship, a target index value corresponding to the information type of the feedback information, where the fourth mapping relationship includes a correspondence relationship between at least one index value and at least one information type, and the at least one index value includes the target index value; and the first terminal generates the second indication information according to the target index value corresponding to the information type of the feedback information.

In other words, the second terminal determines the information type corresponding to the target index value according to the second indication information and a fourth mapping relationship, where the fourth mapping relationship includes a correspondence relationship between at least one index value and at least one information type, and the at least one index value includes the target index value; and the second terminal determines the information type corresponding to the target index value as the information type of the feedback information.

For example, the first terminal determines that a/N feedback is required, then indicates the type of the a/N information to the second terminal, for example, indicates that the a/N information is required to be fed back by 1 bit, and the second terminal determines that the a/N information is required to be fed back according to the indication information and feeds back the a/N information in a feedback channel.

For another example, the first terminal determines that a/N and CSI information need to be fed back, and indicates the two information types to the second terminal, for example, 2 bits indicate that a/N and CSI information need to be fed back (1 bit corresponds to a/N information, and 1 bit corresponds to CSI information), and the second terminal may determine that a/N and CSI information need to be fed back according to the indication information and feed back the a/N and CSI information in a feedback channel.

In this embodiment of the present application, the first terminal can indicate the information type of the feedback information of the second terminal through the fourth mapping relationship.

TABLE 2 fourth mapping relation Table

As can be seen from table 2, the first mapping relationship includes index values and information types of feedback information corresponding to the index values, where index values 0 to 6 correspond to different feedback information respectively, and index value 7 indicates that no feedback is required.

Specifically, the first terminal carries an index value used for indicating the type of information that the second terminal needs to feed back in the indication information. And the second terminal determines the type of the information to be fed back according to the index value and the fourth mapping relation, generates and sends the feedback information to the first terminal according to the type of the information required to be fed back.

Optionally, in some embodiments of the present application, the fourth mapping relationship is pre-configuration information, or the fourth mapping relationship is network configuration information. Further, the fourth mapping relationship is configured by the network through broadcast information, radio resource control information (RRC), or downlink control signaling.

Optionally, in some embodiments of the present application, the second indication information is used to indicate an information bit number of the feedback information.

Optionally, in some embodiments of the present application, the second indication information is used to indicate a target format corresponding to an information type and/or an information bit number of the feedback information.

Optionally, in some embodiments of the present application, the first terminal determines a target format corresponding to the information type of the feedback information according to the information type of the feedback information and a fifth mapping relationship, where the fifth mapping relationship includes a correspondence relationship between at least one format and at least one information type, and the at least one format includes the target format; and the first terminal generates the second indication information according to a target format corresponding to the information type of the feedback information.

In other words, the second terminal determines the information type corresponding to the target format according to the second indication information and a fifth mapping relationship, where the fifth mapping relationship includes a corresponding relationship between at least one format and at least one information type, and the at least one format includes the target format; and the second terminal determines the information type corresponding to the target format as the information type of the feedback information.

Optionally, in some embodiments of the present application, the fifth mapping relationship is pre-configuration information, or the fifth mapping relationship is network configuration information. Further, the fifth mapping relationship is configured by the network through broadcast information, radio resource control information (RRC), or downlink control signaling.

Optionally, in some embodiments of the present application, the first terminal determines a target format corresponding to the information bit number of the feedback information according to the information bit number of the feedback information and a sixth mapping relationship, where the sixth mapping relationship includes a corresponding relationship between at least one format and at least one information bit number, and the at least one format includes the target format; and the first terminal generates the second indication information according to a target format corresponding to the information bit number of the feedback information.

In other words, the second terminal determines the information bit number corresponding to the target format according to the second indication information and a sixth mapping relationship, where the sixth mapping relationship includes a corresponding relationship between at least one format and at least one information bit number, and the at least one format includes the target format; and the second terminal determines the information bit number corresponding to the target format as the information bit number of the feedback information.

Optionally, in some embodiments of the present application, the information bit number of the feedback information includes an information bit number corresponding to one or more information types.

For example, assuming that 4 formats of feedback information are predefined, the information bit numbers of the feedback information corresponding to

formats

0, 1, 2, and 3 are 1, 2, 5, and 10, respectively. And if the first terminal determines that the bit number of the information to be fed back is 2 bits, selecting a format 1 and indicating the format 1 to the second terminal through 2 bits (for example, 01). And if the first terminal determines that the bit number of the information to be fed back is 10 bits, selecting format 3 and indicating the format to the second terminal through 2 bits (for example, 11), and the second terminal generates and sends the feedback information to the first terminal according to the indication information.

Optionally, in some embodiments of the present application, the sixth mapping relationship is pre-configuration information, or the sixth mapping relationship is network configuration information. Further, the sixth mapping relationship is configured by the network through broadcast information, radio resource control information (RRC), or downlink control signaling.

Optionally, in some embodiments of the present application, the first terminal sends collateral control information SCI to the second terminal, where the SCI includes the second indication information. In other words, the second indication information is carried within the sideline control information SCI. It should be understood that the embodiment of the present application only exemplifies that the second indication information is included in the SCI, but the embodiment of the present application is not limited thereto. For example, in other alternative embodiments, the second indication information may also be carried in a Physical Sidelink Control Channel (PSCCH).

In this embodiment, after determining the bit number or the information type of the feedback information, the first terminal may further determine or select a format or a type of a sidelink feedback channel for carrying the feedback information. Therefore, the embodiment of the present application further provides a method for determining or selecting a format or a type of a sidelink feedback channel. That is, the first terminal determines a type or a format of a sidelink feedback channel, where the sidelink feedback channel is used for carrying the feedback information.

Example 1:

the first terminal may determine the type or format of the sidelink feedback channel according to the information type and/or the information bit number of the feedback information.

For example, if the information bit number of the feedback information is less than or equal to K, the first terminal determines to use a first type of sidelink feedback channel, or the first terminal determines to use a first format of sidelink feedback channel, where K is a positive integer, and preferably, K is 2 or 4.

For another example, if the information bit number of the feedback information is greater than K, the first terminal determines to use a sidelink feedback channel of a second type, or the first terminal determines to use a sidelink feedback channel of a second format.

For another example, if the information type of the feedback information is ACK or NACK, the first terminal determines to use a third type of sidelink feedback channel, or the first terminal determines to use a third format of sidelink feedback channel.

For another example, if the information type of the feedback information is feedback information of another type except ACK or NACK, or the feedback information includes at least two feedback information types, the first terminal determines to use a sidelink feedback channel of a fourth type, or the first terminal determines to use a feedback channel of a fourth format. Where ACK and NACK are the same type of feedback information. For example, if the feedback information is ACK, the first terminal determines to use a third type of sidelink feedback channel; if the feedback information is CQI, the first terminal determines to use a fourth type of sidelink feedback channel; if the feedback information is ACK and PMI, the first terminal determines to use a fourth type of sidelink feedback channel; and if the feedback information is PMI, RI and CQI, the first terminal determines to use a fourth type of sidelink feedback channel.

Wherein the first type of side row feedback channel, or the first format of side row feedback channel, or the third type of side row feedback channel, or the third format of side row feedback channel occupies M time-domain symbols in the time domain; wherein M is a positive integer less than or equal to 4.

Wherein the second type of side row feedback channel, or the second format of side row feedback channel, or the fourth type of side row feedback channel, or the fourth format of side row feedback channel occupies N time domain symbols in the time domain; where N is a positive integer, N is greater than or equal to 7, and N is less than or equal to P, where P is the number of time domain symbols included in one slot. Further, the time domain symbol used for transmitting a Physical Sidelink Control Channel (PSCCH) is further included in a time slot or a subframe where the Sidelink feedback Channel of the second type, the Sidelink feedback Channel of the second format, the Sidelink feedback Channel of the fourth type, or the Sidelink feedback Channel of the fourth format is located, and indication Information used for indicating transmission resources of the Sidelink feedback Channel is included in Sidelink Control Information (SCI) carried by the PSCCH.

It should be understood that, in the embodiment of the present application, the first type of side row feedback channel and the third type of side row feedback channel may be of the same type, and the first format of side row feedback channel and the third format of side row feedback channel may be of the same format.

It should be understood that, in the embodiment of the present application, the second type of side row feedback channel and the fourth type of side row feedback channel may be of the same type, and the second format of side row feedback channel and the fourth format of side row feedback channel may be of the same format.

It should be understood that, in this embodiment of the application, the first type of side row feedback channel, or the first format of side row feedback channel, or the second type of side row feedback channel, or the second format of side row feedback channel, or the third type of side row feedback channel, or the third format of side row feedback channel, or the fourth type of side row feedback channel, or the fourth format of side row feedback channel is preconfigured in a terminal device, or configured to a terminal device through a network.

Fig. 6 is an example of a first type of side row feedback channel, or a side row feedback channel of the first format, or a side row feedback channel of the third type, or a side row feedback channel of the third format in this embodiment of the application.

Fig. 7 is an example of a second type of side row feedback channel, or a side row feedback channel in the second format, or a side row feedback channel in the fourth type, or a side row feedback channel in the fourth format in this embodiment of the application.

Fig. 8 is another example of a second type of side row feedback channel, or a side row feedback channel in the second format, or a side row feedback channel in the fourth type, or a side row feedback channel in the fourth format in this embodiment of the application.

As shown in fig. 6, one slot may include 14 OFDM symbols, where the Sidelink feedback Channel occupies 1 OFDM symbol, and the previous and next OFDM symbols in the Sidelink feedback Channel are respectively used for Automatic Gain Control (AGC) and Guard Period (Guard Period, GP), and the first 11 OFDM symbols in the slot are used for transmitting Physical Sidelink Control Channel (PSCCH) and/or Physical Sidelink Shared Channel (PSCCH). Further, symbols used as AGC or GP are also included in OFDM symbols used for PSCCH and/or PSCCH.

In the format shown in fig. 6, the sidelink feedback channel only occupies 1 OFDM symbol in one subframe, i.e. the 1 OFDM symbol is used for transmitting feedback information, and the format shown in fig. 6 can be used for transmitting very little feedback information, such as 1-bit HARQ feedback.

As shown in fig. 7, one slot may include 14 OFDM symbols, wherein the sidelink feedback channel occupies 12 OFDM symbols, and the remaining two OFDM symbols are used for AGC or GP, respectively. In the format shown in fig. 7, the sidelink feedback channel occupies 12 OFDM symbols in one slot, that is, the 12 OFDM symbols are used for transmitting feedback information, and the format shown in fig. 7 may be used for transmitting feedback information of multiple bits, such as HARQ greater than 2 bits or multiple types of feedback information, for example, CQI, PMI, RI, beam information, and the like.

In the format shown in fig. 6 or fig. 7, the first terminal does not have the indication information indicating the transmission resource of the sidelink feedback channel, and therefore the method is suitable for a case where the second terminal may determine or already know the transmission resource of the sidelink feedback channel in advance, for example, the transmission resource of the sidelink feedback channel is indicated to the first terminal by the second terminal, or is determined according to the transmission resource where the sidelink channel sent by the second terminal is located, and therefore the second terminal may detect the sidelink feedback channel according to the predetermined transmission resource.

As shown in fig. 8, one slot may include 14 OFDM symbols, where the first OFDM symbol is used as AGC, the last OFDM symbol is used as GP, 3 OFDM symbols are used for transmitting PSCCH, 9 OFDM symbols are used for transmitting sidelink feedback channel, and SCI carried in PSCCH includes indication information for indicating transmission resources of the sidelink feedback channel.

In the format shown in fig. 8, the first terminal sends the PSCCH for indicating the transmission resource of the side row feedback channel, so that the second terminal can detect the side row feedback channel according to the indication information of the PSCCH.

It should be understood that fig. 6, 7, and 8 are only examples of formats or types of sideline feedback channels according to the embodiments of the present application, and the embodiments of the present application are not limited thereto.

For example, in other alternative embodiments, the format or type of the sidelink feedback channel may be independent of the AGC or GP.

For another example, in other alternative embodiments, the number of OFDM symbols occupied by the measurement feedback channel may be 2.

Example two:

the first terminal may determine the type or format of the sidelink feedback channel according to configuration information; wherein the configuration information is pre-configuration information or information of network equipment configuration.

For example, the first terminal receives configuration Information sent by a network through a broadcast message, or Radio Resource Control (RRC) signaling, or Downlink Control Information (DCI), where the configuration Information indicates that a sidelink feedback channel in a first format is used when the bit number of the feedback Information is less than or equal to 2 bits, and therefore, when the first terminal needs to feed back 1-bit HARQ Information, the feedback Information is transmitted through the sidelink feedback channel in the first format.

Example three:

the first terminal may determine the type or format of the sidelink feedback channel through an indication of other terminals.

Optionally, in some embodiments of the present application, the first terminal receives third indication information sent by the second terminal, and the first terminal determines a type or a format of the sidelink feedback channel according to the third indication information. Optionally, the third indication information is carried in a sideline channel, which is one of the following channels: PSCCH, pscsch, or Physical Sidelink Broadcast Channel (PSBCH).

Optionally, in some embodiments of the present application, the first terminal receives fourth indication information sent by a third terminal, and the first terminal determines the type or format of the sidelink feedback channel according to the fourth indication information, where the first terminal, the second terminal, and the third terminal are terminals in the same communication group, and the third terminal is a group head of the communication group. Optionally, the fourth indication information is carried in a sideline channel, and the sideline channel is one of the following channels: PSCCH, pscsch, or PSBCH. The group head is a terminal having a function of resource management, resource allocation, resource coordination, resource control, or the like in one communication group.

Optionally, in some embodiments of the present application, the side row feedback channel comprises automatic gain control symbols and/or guard interval symbols.

Optionally, in some embodiments of the present application, the information type of the feedback information includes at least one of the following information:

channel Quality Indicator (CQI);

precoding Matrix Indicator (PMI);

rank Indicator (RI);

reference Signal Received Power (RSRP);

reference Signal Received Quality (RSRQ);

received Signal Strength Indicator (RSSI);

interference indication information; and

and (4) path loss information.

It should be understood that the above embodiments are only examples for determining the format or type of the sidestream feedback channel by the first terminal device of the present application, and should not be construed as limiting the present application.

For example, in other alternative embodiments, the first terminal device may also determine the format or type of the sidestream feedback channel in a negotiated manner with the second terminal device.

The preferred embodiments of the present application have been described in detail with reference to the accompanying drawings, however, the present application is not limited to the details of the above embodiments, and various simple modifications can be made to the technical solution of the present application within the technical idea of the present application, and these simple modifications are all within the protection scope of the present application.

For example, the various features described in the foregoing detailed description may be combined in any suitable manner without contradiction, and various combinations that may be possible are not described in this application in order to avoid unnecessary repetition.

For example, various embodiments of the present application may be arbitrarily combined with each other, and the same should be considered as the disclosure of the present application as long as the concept of the present application is not violated.

It should be understood that, in the various method embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

For example, the first terminal in fig. 5 may perform 420 and 430 first, and then perform 410.

Method embodiments of the present application are described in detail above in conjunction with fig. 2-5, and apparatus embodiments of the present application are described in detail below in conjunction with fig. 9 and 10.

Fig. 9 is a schematic block diagram of a terminal device 500 according to an embodiment of the present application. It should be understood that the terminal device 500 shown in fig. 9 may be the first terminal in fig. 4 or fig. 5, or may also be the second terminal in fig. 4 or fig. 5, and this embodiment of the present application is not particularly limited.

Optionally, in some embodiments of the present application, when the terminal device 500 is used as the first terminal in fig. 4 or fig. 5, the terminal device 500 may include:

a communication module 510 for transmitting a channel to the second terminal; a determining module 520, configured to determine an information type and/or an information bit number of the feedback information of the channel sent by the second terminal; the communication module 510 is further configured to receive the feedback information sent by the second terminal according to the information type and/or the information bit number of the feedback information.

Optionally, in some embodiments of the present application, the communication module 510 is further configured to:

receiving first indication information sent by the second terminal, wherein the first indication information is used for the terminal equipment to determine the information type of the feedback information and/or the information bit number of the feedback information; the determining module 520 is specifically configured to:

and determining the information type and/or the information bit number of the feedback information according to the first indication information.

Optionally, in some embodiments of the present application, the determining module 520 is specifically configured to:

determining an information type corresponding to the target index value according to the first indication information and a first mapping relation, wherein the first mapping relation comprises a corresponding relation between at least one index value and at least one information type, and the at least one index value comprises the target index value; and determining the information type corresponding to the target index value as the information type of the feedback information.

Optionally, in some embodiments of the present application, the determining module 520 is further configured to:

and determining the information bit number of the feedback information according to the information type of the feedback information.

Optionally, in some embodiments of the present application, the first mapping relationship is pre-configuration information, or the first mapping relationship is network configuration information.

Optionally, in some embodiments of the present application, the first indication information is used to indicate a target format corresponding to an information bit number of the feedback information.

determining an information bit number corresponding to the target format according to the first indication information and a second mapping relation, wherein the second mapping relation comprises a corresponding relation between at least one format and at least one information bit number, and the at least one format comprises the target format; and determining the information bit number corresponding to the target format as the information bit number of the feedback information.

Optionally, in some embodiments of the present application, the information bit number corresponding to each of the at least one format includes an information bit number of one information type, or a sum of information bit numbers of a plurality of information types.

Optionally, in some embodiments of the present application, the second mapping relationship is pre-configuration information, or the second mapping relationship is network configuration information.

the terminal device determines the information type of the feedback information corresponding to the target format according to the first indication information and a third mapping relation, wherein the third mapping relation comprises a corresponding relation between at least one format and at least one information type, and the at least one format comprises the target format; and determining the information type corresponding to the target format as the information type of the feedback information.

Optionally, in some embodiments of the present application, the third mapping relationship is pre-configuration information, or the third mapping relationship is network configuration information.

Optionally, in some embodiments of the present application, the communication module 510 is specifically configured to:

and receiving Sideline Control Information (SCI) sent by the second terminal, wherein the SCI comprises the first indication information.

generating second indication information according to the information type and/or the information bit number of the feedback information, wherein the second indication information is used for the second terminal to determine the information type and/or the information bit number of the feedback information; the communication module 510 is further configured to:

and sending the second indication information to the second terminal.

determining a target index value corresponding to the information type of the feedback information according to the information type of the feedback information and a fourth mapping relation, wherein the fourth mapping relation comprises a corresponding relation between at least one index value and at least one information type, and the at least one index value comprises the target index value; and generating the second indication information according to the target index value corresponding to the information type of the feedback information.

Optionally, in some embodiments of the present application, the fourth mapping relationship is pre-configuration information, or the fourth mapping relationship is network configuration information.

determining a target format corresponding to the information type of the feedback information according to the information type of the feedback information and a fifth mapping relation, wherein the fifth mapping relation comprises a corresponding relation between at least one format and at least one information type, and the at least one format comprises the target format; and generating the second indication information according to a target format corresponding to the information type of the feedback information.

Optionally, in some embodiments of the present application, the fifth mapping relationship is pre-configuration information, or the fifth mapping relationship is network configuration information.

determining a target format corresponding to the information bit number of the feedback information according to the information bit number of the feedback information and a sixth mapping relation, wherein the sixth mapping relation comprises a corresponding relation between at least one format and at least one information bit number, and the at least one format comprises the target format; and generating the second indication information according to a target format corresponding to the information bit number of the feedback information.

Optionally, in some embodiments of the present application, the sixth mapping relationship is pre-configuration information, or the sixth mapping relationship is network configuration information.

and sending Sideline Control Information (SCI) to the second terminal, wherein the SCI comprises the second indication information.

determining the type or format of a side row feedback channel, wherein the side row feedback channel is used for carrying the feedback information.

and determining the type or format of the sideline feedback channel according to the information type and/or the information bit number of the feedback information.

Optionally, in some embodiments of the present application, the determining module 520 is more specifically configured to:

if the information bit number of the feedback information is less than or equal to K, determining to use a first type of side-line feedback channel, or determining to use a first format of side-line feedback channel; alternatively, the first and second electrodes may be,

if the information bit number of the feedback information is larger than K, determining to use a second type of side line feedback channel, or determining to use a second format of side line feedback channel; alternatively, the first and second electrodes may be,

if the information type of the feedback information is ACK or NACK, determining to use a third type of side-line feedback channel or determining to use a third format of side-line feedback channel; alternatively, the first and second electrodes may be,

if the information type of the feedback information is feedback information of other types except ACK or NACK, or the feedback information comprises at least two feedback information types, determining to use a fourth type of side-row feedback channel, or determining to use a fourth format of feedback channel;

wherein K is a positive integer.

Optionally, in some embodiments of the present application, the first type of side row feedback channel, or the first format of side row feedback channel, or the third type of side row feedback channel, or the third format of side row feedback channel occupies M time-domain symbols in a time domain;

wherein M is a positive integer less than or equal to 4.

Optionally, in some embodiments of the present application, the second type of side row feedback channel, or the second format of side row feedback channel, or the fourth type of side row feedback channel, or the fourth format of side row feedback channel occupies N time domain symbols in a time domain;

where N is a positive integer, N is greater than or equal to 7, and N is less than or equal to P, where P is the number of time domain symbols included in one slot.

determining the type or format of the side-row feedback channel according to configuration information; wherein the configuration information is pre-configuration information or information of network equipment configuration.

receiving third indication information sent by the second terminal, where the determining module 520 is configured to determine the type or format of the sidelink feedback channel according to the third indication information.

receiving fourth indication information sent by a third terminal, where the determining module 520 is configured to determine the type or format of the sidelink feedback channel according to the fourth indication information, where the first terminal, the second terminal, and the third terminal are terminals in the same communication group, and the third terminal is a group head of the communication group.

channel quality indication information (CQI);

precoding matrix indication information, PMI;

rank indication information RI;

reference signal received power, RSRP;

reference signal received quality, RSRQ;

a Received Signal Strength Indication (RSSI);

interference indication information; and

and (4) path loss information.

When the terminal device 500 may also be used as the second terminal in fig. 4 or fig. 5, that is, the terminal device 500 may include:

a communication module 510, configured to receive a channel sent by a first terminal; a determining module 520, configured to determine an information type and/or an information bit number of the feedback information of the channel, and generate the feedback information according to the information type and/or the information bit number of the feedback information; the communication module 510 is further configured to send the feedback information to the first terminal.

generating first indication information according to the information type and/or the information bit number of the feedback information, wherein the first indication information is used for the first terminal to determine the information type and/or the information bit number of the feedback information; the communication module 510 is further configured to:

and the terminal equipment sends the first indication information to the first terminal.

determining the target index corresponding to the information type of the feedback information according to the information type of the feedback information and a first mapping relation, wherein the first mapping relation comprises a corresponding relation between at least one index value and at least one information type, and the at least one index value comprises the target index value; and generating the first indication information according to the target index corresponding to the information type of the feedback information.

determining the target format corresponding to the information bit number of the feedback information according to the information bit number of the feedback information and a second mapping relation, wherein the second mapping relation comprises a corresponding relation between at least one format and at least one information bit number, and the at least one format comprises the target format; and generating the first indication information according to the target format corresponding to the information bit number of the feedback information.

determining the target format corresponding to the information type of the feedback information according to the information type of the feedback information and a third mapping relation, wherein the third mapping relation comprises a corresponding relation between at least one format and at least one information type, and the at least one format comprises the target format; and generating the first indication information according to the target format corresponding to the information type of the feedback information.

and sending Sideline Control Information (SCI) to the first terminal, wherein the SCI comprises the first indication information.

receiving second indication information sent by the first terminal, where the second indication information is used by the second end to determine an information type of the feedback information and/or an information bit number of the feedback information; the determining module 520 is specifically configured to:

and determining the information type and/or the information bit number of the feedback information according to the second indication information.

the second indication information and a fourth mapping relation determine an information type corresponding to the target index value, the fourth mapping relation includes a corresponding relation between at least one index value and at least one information type, and the at least one index value includes the target index value; and determining the information type corresponding to the target index value as the information type of the feedback information.

determining an information type corresponding to a target format according to the second indication information and a fifth mapping relation, wherein the fifth mapping relation comprises a corresponding relation between at least one format and at least one information type, and the at least one format comprises the target format; and determining the information type corresponding to the target format as the information type of the feedback information.

Optionally, in some embodiments of the present application, the determining unit is specifically configured to:

determining an information bit number corresponding to the target format according to the second indication information and a sixth mapping relation, wherein the sixth mapping relation comprises a corresponding relation between at least one format and at least one information bit number, and the at least one format comprises the target format; and determining the information bit number corresponding to the target format as the information bit number of the feedback information.

and receiving Sideline Control Information (SCI) sent by the first terminal, wherein the SCI comprises the second indication information.

wherein K is a positive integer.

wherein M is a positive integer less than or equal to 4.

and the second terminal sends third indication information to the first terminal, wherein the third indication information is used for the first terminal to determine the type or the format of the side row feedback channel.

channel quality indication information (CQI);

precoding matrix indication information, PMI;

rank indication information RI;

reference signal received power, RSRP;

reference signal received quality, RSRQ;

a Received Signal Strength Indication (RSSI);

interference indication information; and

and (4) path loss information.

It is to be understood that apparatus embodiments and method embodiments may correspond to one another and that similar descriptions may refer to method embodiments. Specifically, the terminal device 500 shown in fig. 9 may correspond to a corresponding main body for executing the

methods

200, 300, and 400 in the embodiments 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 corresponding flows in each method in fig. 1 to fig. 5, and are not described again here for brevity.

The terminal device of the embodiment of the present application is described above from the perspective of the functional modules in conjunction with fig. 9. It should be understood that the functional modules may be implemented by hardware, by instructions in software, or by a combination of hardware and software modules.

Specifically, the steps of the method embodiments in the present application may be implemented by integrated logic circuits of hardware in a processor and/or instructions in the form of software, and the steps of the method disclosed in conjunction with the embodiments in the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.

Alternatively, the software modules may be located in random access memory, flash memory, read only memory, programmable read only memory, electrically erasable programmable memory, registers, and the like, as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps in the above method embodiments in combination with hardware thereof.

For example, in the embodiment of the present application, the determining module 520 shown in fig. 9 may be implemented by a processor, and the communication module 510 shown in fig. 9 may be implemented by a transceiver.

Fig. 10 is a schematic structural diagram of a terminal device 600 according to an embodiment of the present application. The terminal device 600 shown in fig. 10 includes a processor 610, and the processor 610 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 10, the terminal device 600 may further include a memory 620. The memory 620 may be used to store instructions and codes, instructions, etc. that may be executed by the processor 610. From the memory 620, the processor 610 may call and run a computer program to implement the method in the embodiment of the present application.

The memory 620 may be a separate device from the processor 610, or may be integrated into the processor 610.

Optionally, as shown in fig. 10, the terminal device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 630 may include a transmitter and a receiver, among others. The transceiver 630 may further include one or more antennas.

Optionally, the terminal device 600 may be a first terminal in the embodiment of the present application, and the terminal device 600 may implement a corresponding flow implemented by the first terminal in each method in the embodiment of the present application. That is to say, the terminal device 600 in the embodiment of the present application may correspond to the first terminal in the embodiment of the present application, and may correspond to the corresponding main body in the

methods

200, 300, and 400 executed according to the embodiment of the present application, and for brevity, no further description is provided here.

Optionally, the terminal device 600 may be a second terminal in the embodiment of the present application, and the terminal device 600 may implement a corresponding process implemented by the second terminal in each method in the embodiment of the present application, that is, the terminal device 600 in the embodiment of the present application may correspond to the second terminal in the embodiment of the present application and may correspond to a corresponding main body in the

methods

200, 300, and 400 executed according to the embodiment of the present application, and for brevity, no further description is given here.

It should be understood that the various components in the terminal device 600 are connected by a bus system that includes a power bus, a control bus, and a status signal bus in addition to a data bus.

In addition, an embodiment of the present application further provides a chip, which may be an integrated circuit chip, and has signal processing capability, and may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiment of the present application.

Alternatively, the chip may be applied to various terminal devices, so that the terminal device mounted with the chip can execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application.

Fig. 11 is a schematic structural diagram of a chip according to an embodiment of the present application.

The chip 700 shown in fig. 11 includes a processor 710, and the processor 710 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 11, the chip 700 may further include a memory 720. From the memory 720, the processor 710 can call and run a computer program to implement the method in the embodiment of the present application. The memory 620 may be used to store instructions and codes, instructions, etc. that may be executed by the processor 610.

The memory 720 may be a separate device from the processor 710, or may be integrated into the processor 710.

Optionally, the chip 700 may further include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and in particular, may obtain information or data transmitted by other devices or chips.

Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.

Optionally, the chip may be applied to the first terminal device in the embodiment of the present application, and the chip may implement a corresponding process implemented by the first terminal in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the chip may be applied to the second terminal in the embodiment of the present application, and the chip may implement a corresponding process implemented by the second terminal in each method in the embodiment of the present application, and for brevity, details are not described here again.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc. It will also be appreciated that the various components in the chip 700 are connected by a bus system that includes a power bus, a control bus, and a status signal bus in addition to a data bus.

The processor referred to in the embodiments of the present application may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a transistor logic device, a discrete hardware component, or the like. Further, a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

Further, the memory referred to in the embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile 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. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory.

It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like.

The embodiment of the application also provides a computer readable storage medium for storing the computer program.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer-readable storage medium may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

A computer program product comprising computer program instructions is also provided in an embodiment of the present application.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions enable the computer to execute corresponding processes implemented by the network device in the methods in the embodiment of the present application, which are not described herein again for brevity.

Optionally, the computer program product may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiment of the present application, which are not described herein again for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

The embodiment of the application also provides a communication system.

Optionally, the communication system may include the first terminal and the second terminal. Further, the communication system may further include a network device.

It should be noted that the term "system" and the like herein may also be referred to as "network management architecture" or "network system" and the like.

It is also to be understood that the terminology used in the embodiments of the present application and the appended claims is for the purpose of describing particular embodiments only, and is not intended to be limiting of the embodiments of the present application.

For example, as used in the examples of this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

Those of skill in the art would 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 implementation. 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 embodiments of the present application.

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. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially implemented or make a contribution to the prior art, or may be implemented in the form of a software product stored in a storage medium and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: u disk, removable hard disk, read only memory, random access memory, magnetic or optical disk, etc. for storing program codes. It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways.

For example, the division of a unit or a module or a component in the above-described device embodiments is only one logical function division, and there may be other divisions in actual implementation, for example, a plurality of units or modules or components may be combined or may be integrated into another system, or some units or modules or components may be omitted, or not executed. Also for example, the units/modules/components described above as separate/display components may or may not be physically separate, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the units/modules/components can be selected according to actual needs to achieve the purposes of the embodiments of the present application.

Finally, it should be noted that the above shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The above description is only a specific implementation of the embodiments of the present application, but the scope of the embodiments of the present application is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the embodiments of the present application, and all the changes or substitutions should be covered by the scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.

Claims

A method for feeding back information, the method comprising:

a first terminal sends a channel to a second terminal;

the first terminal determines the information type and/or the information bit number of the feedback information of the channel sent by the second terminal;

and the first terminal receives the feedback information sent by the second terminal according to the information type and/or the information bit number of the feedback information.
The method of claim 1, wherein the information type of the feedback information comprises at least one of the following information:

acknowledgement ACK, non-acknowledgement NACK, channel state information CSI, power information and beam information.
The method according to claim 1 or 2, wherein the determining, by the first terminal, the information type and/or the information bit number of the feedback information of the channel sent by the second terminal comprises:

the first terminal receives first indication information sent by the second terminal, wherein the first indication information is used for the first terminal to determine the information type of the feedback information and/or the information bit number of the feedback information;

and the first terminal determines the information type and/or the information bit number of the feedback information according to the first indication information.
The method of claim 3, wherein the first indication information is used to indicate a target index value corresponding to an information type of the feedback information.
The method according to claim 4, wherein the determining, by the first terminal, the information type and/or the information bit number of the feedback information of the channel sent by the second terminal comprises:

the first terminal determines an information type corresponding to the target index value according to the first indication information and a first mapping relation, wherein the first mapping relation comprises a corresponding relation between at least one index value and at least one information type, and the at least one index value comprises the target index value;

and the first terminal determines the information type corresponding to the target index value as the information type of the feedback information.
The method of claim 5, further comprising:

and the first terminal determines the information bit number of the feedback information according to the information type of the feedback information.
The method according to claim 5 or 6, wherein the information type corresponding to the target index value comprises one or more information types.
The method according to any of claims 5 to 7, wherein the first mapping relationship is pre-configuration information or the first mapping relationship is network configuration information.
The method of claim 3, wherein the first indication information is used for indicating a number of information bits of the feedback information.
The method of claim 3, wherein the first indication information is used for indicating a target format corresponding to the information bit number of the feedback information.
The method according to claim 10, wherein the determining, by the first terminal, the information type and/or the information bit number of the feedback information of the channel sent by the second terminal comprises:

the first terminal determines the information bit number corresponding to the target format according to the first indication information and a second mapping relation, wherein the second mapping relation comprises the corresponding relation between at least one format and at least one information bit number, and the at least one format comprises the target format;

and the first terminal determines the information bit number corresponding to the target format as the information bit number of the feedback information.
The method according to claim 11, wherein the number of information bits corresponding to each of the at least one format comprises a sum of information bits for one information type or information bits for a plurality of information types.
The method according to claim 11 or 12, wherein the second mapping relationship is pre-configuration information or the second mapping relationship is network configuration information.
The method according to claim 10, wherein the determining, by the first terminal, the information type and/or the information bit number of the feedback information of the channel sent by the second terminal comprises:

the first terminal determines the information type of the feedback information corresponding to the target format according to the first indication information and a third mapping relation, wherein the third mapping relation comprises a corresponding relation between at least one format and at least one information type, and the at least one format comprises the target format;

and the first terminal determines the information type corresponding to the target format as the information type of the feedback information.
The method of claim 14, wherein the type of information corresponding to each of the at least one format comprises one or more types of information.
The method according to claim 14 or 15, wherein the third mapping relationship is pre-configured information or the third mapping relationship is network configuration information.
The method according to any one of claims 3 to 16, wherein the receiving, by the first terminal, the first indication information sent by the second terminal comprises:

and the first terminal receives sideline control information SCI sent by the second terminal, wherein the SCI comprises the first indication information.
The method according to claim 1 or 2, characterized in that the method further comprises:

the first terminal generates second indication information according to the information type and/or the information bit number of the feedback information, wherein the second indication information is used for the second terminal to determine the information type and/or the information bit number of the feedback information;

and the first terminal sends the second indication information to the second terminal.
The method of claim 18, wherein the second indication information is used for indicating a target index value corresponding to an information type of the feedback information.
The method according to claim 19, wherein the first terminal generates second indication information according to the information type and/or the information bit number of the feedback information, and comprises:

the first terminal determines a target index value corresponding to the information type of the feedback information according to the information type of the feedback information and a fourth mapping relation, wherein the fourth mapping relation comprises a corresponding relation between at least one index value and at least one information type, and the at least one index value comprises the target index value;

and the first terminal generates the second indication information according to the target index value corresponding to the information type of the feedback information.
The method of claim 20, wherein the information type corresponding to the target index value comprises one or more information types.
The method according to claim 20 or 21, wherein the fourth mapping relationship is pre-configuration information or the fourth mapping relationship is network configuration information.
The method of claim 18, wherein the second indication information is used for indicating a number of information bits of the feedback information.
The method according to claim 18, wherein the second indication information is used for indicating a target format corresponding to an information type and/or an information bit number of the feedback information.
The method according to claim 24, wherein the generating, by the first terminal, second indication information according to the information type and/or the information bit number of the feedback information comprises:

the first terminal determines a target format corresponding to the information type of the feedback information according to the information type of the feedback information and a fifth mapping relation, wherein the fifth mapping relation comprises a corresponding relation between at least one format and at least one information type, and the at least one format comprises the target format;

and the first terminal generates the second indication information according to a target format corresponding to the information type of the feedback information.
The method of claim 25, wherein the fifth mapping relationship is pre-configured information or wherein the fifth mapping relationship is network configuration information.
The method according to claim 24, wherein the generating, by the first terminal, second indication information according to the information type and/or the information bit number of the feedback information comprises:

the first terminal determines a target format corresponding to the information bit number of the feedback information according to the information bit number of the feedback information and a sixth mapping relation, wherein the sixth mapping relation comprises a corresponding relation between at least one format and at least one information bit number, and the at least one format comprises the target format;

and the first terminal generates the second indication information according to a target format corresponding to the information bit number of the feedback information.
The method of claim 27, wherein the information bits of the feedback information comprise a sum of information bits corresponding to one information type or a plurality of information types.
The method according to claim 27 or 28, wherein the sixth mapping relationship is pre-configuration information or the sixth mapping relationship is network configuration information.
The method according to any of claims 18 to 29, wherein the sending of the second indication information by the first terminal to the second terminal comprises:

and the first terminal sends collateral control information SCI to the second terminal, wherein the SCI comprises the second indication information.
The method according to any one of claims 1 to 30, further comprising:

the first terminal determines the type or format of a side-row feedback channel, wherein the side-row feedback channel is used for carrying the feedback information.
The method of claim 31, wherein the first terminal determines a type or format of a sidelink feedback channel, comprising:

and the first terminal determines the type or format of the sideline feedback channel according to the information type and/or the information bit number of the feedback information.
The method according to claim 32, wherein the determining, by the first terminal, the type or format of the sidelink feedback channel according to the information type and/or the information bit number of the feedback information comprises:

if the information bit number of the feedback information is less than or equal to K, the first terminal determines to use a first type of side-line feedback channel, or the first terminal determines to use a first format of side-line feedback channel; alternatively, the first and second electrodes may be,

if the information bit number of the feedback information is greater than K, the first terminal determines to use a second type of side-line feedback channel, or the first terminal determines to use a second format of side-line feedback channel; alternatively, the first and second electrodes may be,

if the information type of the feedback information is ACK or NACK, the first terminal determines to use a third type of side-line feedback channel, or the first terminal determines to use a third format of side-line feedback channel; alternatively, the first and second electrodes may be,

if the information type of the feedback information is feedback information of other types except for ACK or NACK, or the feedback information comprises at least two feedback information types, the first terminal determines to use a fourth type of sidelink feedback channel, or the first terminal determines to use a fourth format of feedback channel;

wherein K is a positive integer.
The method according to claim 33, wherein the first type of side row feedback channel, or the first format of side row feedback channel, or the third type of side row feedback channel, or the third format of side row feedback channel, occupies M time domain symbols in time domain;

wherein M is a positive integer less than or equal to 4.
The method according to claim 33, wherein the second type of side row feedback channel, or the second format of side row feedback channel, or the fourth type of side row feedback channel, or the fourth format of side row feedback channel, occupies N time domain symbols in time domain;

where N is a positive integer, N is greater than or equal to 7, and N is less than or equal to P, where P is the number of time domain symbols included in one slot.
The method of claim 31, the first terminal determining a type or format of a sidelink feedback channel, comprising:

the first terminal determines the type or format of the side row feedback channel according to configuration information; wherein the configuration information is pre-configuration information or information of network equipment configuration.
The method of claim 31, the first terminal determining a type or format of a sidelink feedback channel, comprising:

and the first terminal receives third indication information sent by the second terminal, and the first terminal determines the type or format of the side-row feedback channel according to the third indication information.
The method of claim 31, the first terminal determining a type or format of a sidelink feedback channel, comprising:

the first terminal receives fourth indication information sent by a third terminal, and the first terminal determines the type or format of the sidelink feedback channel according to the fourth indication information, wherein the first terminal, the second terminal and the third terminal are terminals in the same communication group, and the third terminal is a group head of the communication group.
The method according to any of claims 31 to 38, wherein the sidelink feedback channel comprises automatic gain control symbols and/or guard interval symbols.
The method according to any of claims 1 to 39, wherein the information type of the feedback information comprises at least one of the following information:

channel quality indication information (CQI);

precoding matrix indication information, PMI;

rank indication information RI;

reference signal received power, RSRP;

reference signal received quality, RSRQ;

a Received Signal Strength Indication (RSSI);

interference indication information; and

and (4) path loss information.
A method for feeding back information, the method comprising:

the second terminal receives the channel sent by the first terminal;

the second terminal determines the information type and/or the information bit number of the feedback information of the channel;

and the second terminal sends the feedback information to the first terminal according to the information type and/or the information bit number of the feedback information.
The method of claim 41, wherein the information type of the feedback information comprises at least one of the following information:

acknowledgement ACK, non-acknowledgement NACK, channel state information CSI, power information and beam information.
The method of claim 41 or 42, further comprising:

the second terminal generates first indication information according to the information type and/or the information bit number of the feedback information, wherein the first indication information is used for the first terminal to determine the information type and/or the information bit number of the feedback information;

and the second terminal sends the first indication information to the first terminal.
The method of claim 43, wherein the first indication information is used to indicate a target index value corresponding to an information type of the feedback information.
The method according to claim 44, wherein the second terminal generates the first indication information according to the information type and/or the information bit number of the feedback information, and comprises:

the second terminal determines the target index corresponding to the information type of the feedback information according to the information type of the feedback information and a first mapping relation, wherein the first mapping relation comprises a corresponding relation between at least one index value and at least one information type, and the at least one index value comprises the target index value;

and the second terminal generates the first indication information according to the target index corresponding to the information type of the feedback information.
The method of claim 45, further comprising:

and the second terminal determines the information bit number of the feedback information according to the information type of the feedback information.
The method according to claim 45 or 46, wherein the information type corresponding to the target index value comprises one or more information types.
The method according to any of claims 45 to 47, wherein the first mapping relationship is pre-configured information or the first mapping relationship is network configuration information.
The method of claim 43, wherein the first indication information is used for indicating the information bit number of the feedback information.
The method according to claim 43, wherein the first indication information is used to indicate a target format corresponding to an information type and/or an information bit number of the feedback information.
The method according to claim 50, wherein the second terminal generates the first indication information according to the information type and/or the information bit number of the feedback information, and comprises:

the second terminal determines the target format corresponding to the information bit number of the feedback information according to the information bit number of the feedback information and a second mapping relation, wherein the second mapping relation comprises a corresponding relation between at least one format and at least one information bit number, and the at least one format comprises the target format;

and the second terminal generates the first indication information according to the target format corresponding to the information bit number of the feedback information.
The method according to claim 51, wherein the number of information bits corresponding to each of the at least one format comprises a sum of information bits for one information type or information bits for a plurality of information types.
The method according to claim 51 or 52, wherein the second mapping relationship is pre-configuration information or the second mapping relationship is network configuration information.
The method according to claim 50, wherein the second terminal generates the first indication information according to the information type and/or the information bit number of the feedback information, and comprises:

the second terminal determines the target format corresponding to the information type of the feedback information according to the information type of the feedback information and a third mapping relation, wherein the third mapping relation comprises a corresponding relation between at least one format and at least one information type, and the at least one format comprises the target format;

and the second terminal generates the first indication information according to the target format corresponding to the information type of the feedback information.
The method according to claim 54, wherein the information type corresponding to each of the at least one format comprises one or more information types.
The method according to claim 54 or 55, wherein the third mapping relationship is pre-configured information or the third mapping relationship is network configuration information.
The method according to any of claims 43 to 56, wherein the sending of the first indication information by the second terminal to the first terminal comprises:

and the second terminal sends sideline control information SCI to the first terminal, wherein the SCI comprises the first indication information.
The method according to claim 41 or 42, wherein the second terminal determines the information type and/or the information bit number of the feedback information of the channel, comprising:

the second terminal receives second indication information sent by the first terminal, wherein the second indication information is used for the second end to determine the information type of the feedback information and/or the information bit number of the feedback information;

and the second terminal determines the information type and/or the information bit number of the feedback information according to the second indication information.
The method of claim 58, wherein the second indication information is used for indicating a target index value corresponding to an information type of the feedback information.
The method according to claim 59, wherein the second terminal determines the information type and/or the information bit number of the feedback information of the channel, comprising:

the second terminal determines an information type corresponding to the target index value according to the second indication information and a fourth mapping relation, wherein the fourth mapping relation comprises a corresponding relation between at least one index value and at least one information type, and the at least one index value comprises the target index value;

and the second terminal determines the information type corresponding to the target index value as the information type of the feedback information.
The method of claim 60, wherein the information type corresponding to the target index value comprises one or more information types.
The method according to claim 60 or 61, wherein the fourth mapping relationship is pre-configuration information or the fourth mapping relationship is network configuration information.
The method of claim 58, wherein the second indication information is used for indicating the information bit number of the feedback information.
The method according to claim 58, wherein the second indication information is used for indicating a target format corresponding to an information type and/or an information bit number of the feedback information.
The method according to claim 64, wherein the second terminal determines the information type and/or the information bit number of the feedback information of the channel, and comprises:

the second terminal determines an information type corresponding to a target format according to the second indication information and a fifth mapping relation, wherein the fifth mapping relation comprises a corresponding relation between at least one format and at least one information type, and the at least one format comprises the target format;

and the second terminal determines the information type corresponding to the target format as the information type of the feedback information.
The method of claim 65, wherein the fifth mapping relationship is pre-configured information or wherein the fifth mapping relationship is network configuration information.
The method according to claim 64, wherein the second terminal determines the information type and/or the information bit number of the feedback information of the channel, and comprises:

the second terminal determines the information bit number corresponding to the target format according to the second indication information and a sixth mapping relation, wherein the sixth mapping relation comprises a corresponding relation between at least one format and at least one information bit number, and the at least one format comprises the target format;

and the second terminal determines the information bit number corresponding to the target format as the information bit number of the feedback information.
The method of claim 67, wherein the information bits of the feedback information comprise information bits corresponding to one or more information types.
The method according to claim 67 or 68, wherein the sixth mapping relationship is pre-configured information or wherein the sixth mapping relationship is network configuration information.
The method according to any of claims 58 to 69, wherein the receiving, by the second terminal, the second indication information sent by the first terminal comprises:

and the second terminal receives the sideline control information SCI sent by the first terminal, wherein the SCI comprises the second indication information.
The method of any one of claims 41 to 70, further comprising:

and the second terminal determines the type or format of a side row feedback channel, wherein the side row feedback channel is used for carrying the feedback information.
The method of claim 71, wherein the second terminal determines a type or format of a sidelink feedback channel, comprising:

and the second terminal determines the type or format of the sideline feedback channel according to the information type and/or the information bit number of the feedback information.
The method according to claim 72, wherein the determining, by the second terminal, the type or format of the sidelink feedback channel according to the information type and/or the information bit number of the feedback information comprises:

if the information bit number of the feedback information is less than or equal to K, the second terminal determines to use a first type of side-line feedback channel, or the second terminal determines to use a first format of side-line feedback channel; alternatively, the first and second electrodes may be,

if the information bit number of the feedback information is greater than K, the second terminal determines to use a second type of side-line feedback channel, or the second terminal determines to use a second format of side-line feedback channel; alternatively, the first and second electrodes may be,

if the information type of the feedback information is ACK or NACK, the second terminal determines to use a third type of side-line feedback channel, or the second terminal determines to use a third format of side-line feedback channel; alternatively, the first and second electrodes may be,

if the information type of the feedback information is feedback information of other types except for ACK or NACK, or the feedback information comprises at least two feedback information types, the second terminal determines to use a fourth type of sidelink feedback channel, or the second terminal determines to use a fourth format of feedback channel;

wherein K is a positive integer.
The method according to claim 73, wherein the first type of side row feedback channel, or the first format of side row feedback channel, or the third type of side row feedback channel, or the third format of side row feedback channel, occupies M time domain symbols in time domain;

wherein M is a positive integer less than or equal to 4.
The method according to claim 73, wherein the second type of side row feedback channel, or the second format of side row feedback channel, or the fourth type of side row feedback channel, or the fourth format of side row feedback channel, occupies N time domain symbols in the time domain;

where N is a positive integer, N is greater than or equal to 7, and N is less than or equal to P, where P is the number of time domain symbols included in one slot.
The method of claim 71, the second terminal determining a type or format of a sidelink feedback channel, comprising:

the second terminal determines the type or format of the side row feedback channel according to the configuration information; wherein the configuration information is pre-configuration information or information of network equipment configuration.
The method of claim 71, further comprising:

and the second terminal sends third indication information to the first terminal, wherein the third indication information is used for the first terminal to determine the type or the format of the side row feedback channel.
The method of claim 71, the second terminal determining a type or format of a sidelink feedback channel, comprising:

the second terminal receives fourth indication information sent by a third terminal, and the second terminal determines the type or format of the sideline feedback channel according to the fourth indication information, wherein the first terminal, the second terminal and the third terminal are terminals in the same communication group, and the third terminal is a group head of the communication group.
The method according to any of claims 71 to 78, wherein the sidelink feedback channel comprises automatic gain control symbols and/or guard interval symbols.
The method according to any of claims 71-79, wherein the information type of the feedback information comprises at least one of the following information:

channel quality indication information (CQI);

precoding matrix indication information, PMI;

rank indication information RI;

reference signal received power, RSRP;

reference signal received quality, RSRQ;

a Received Signal Strength Indication (RSSI);

interference indication information; and

and (4) path loss information.
A terminal device, comprising:

a communication module for transmitting a channel to a second terminal;

a determining module, configured to determine an information type and/or an information bit number of the feedback information of the channel sent by the second terminal;

the communication module is further configured to receive the feedback information sent by the second terminal according to the information type and/or the information bit number of the feedback information.
The terminal device of claim 81, wherein the information type of the feedback information comprises at least one of the following information:

acknowledgement ACK, non-acknowledgement NACK, channel state information CSI, power information and beam information.
The terminal device of claim 81 or 82, wherein the communication module is further configured to:

receiving first indication information sent by the second terminal, wherein the first indication information is used for the terminal equipment to determine the information type of the feedback information and/or the information bit number of the feedback information; the determining module is specifically configured to:

and determining the information type and/or the information bit number of the feedback information according to the first indication information.
The terminal device of claim 83, wherein the first indication information is used to indicate a target index value corresponding to an information type of the feedback information.
The terminal device of claim 84, wherein the determining module is specifically configured to:

determining an information type corresponding to the target index value according to the first indication information and a first mapping relation, wherein the first mapping relation comprises a corresponding relation between at least one index value and at least one information type, and the at least one index value comprises the target index value;

and determining the information type corresponding to the target index value as the information type of the feedback information.
The terminal device of claim 85, wherein the determining module is further configured to:

and determining the information bit number of the feedback information according to the information type of the feedback information.
The terminal device of claim 85 or 86, wherein the information type corresponding to the target index value comprises one or more information types.
The terminal device of any one of claims 85 to 87, wherein the first mapping relationship is pre-configuration information or the first mapping relationship is network configuration information.
The terminal device according to claim 83, wherein the first indication information is used to indicate the information bit number of the feedback information.
The terminal device according to claim 83, wherein the first indication information is used to indicate a target format corresponding to the information bit number of the feedback information.
The terminal device of claim 90, wherein the determining module is specifically configured to:

determining an information bit number corresponding to the target format according to the first indication information and a second mapping relation, wherein the second mapping relation comprises a corresponding relation between at least one format and at least one information bit number, and the at least one format comprises the target format;

and determining the information bit number corresponding to the target format as the information bit number of the feedback information.
The terminal device according to claim 91, wherein the number of information bits for each of the at least one format comprises the number of information bits for one information type or the sum of the number of information bits for a plurality of information types.
The terminal device according to claim 91 or 92, wherein the second mapping relationship is pre-configuration information or the second mapping relationship is network configuration information.
The terminal device of claim 90, wherein the determining module is specifically configured to:

the terminal device determines the information type of the feedback information corresponding to the target format according to the first indication information and a third mapping relation, wherein the third mapping relation comprises a corresponding relation between at least one format and at least one information type, and the at least one format comprises the target format;

and determining the information type corresponding to the target format as the information type of the feedback information.
The terminal device of claim 94, wherein the type of information corresponding to each of the at least one format comprises one or more types of information.
The terminal device according to claim 94 or 95, wherein the third mapping relationship is pre-configuration information or the third mapping relationship is network configuration information.
The terminal device according to any one of claims 83 to 96, wherein the communication module is specifically configured to:

and receiving Sideline Control Information (SCI) sent by the second terminal, wherein the SCI comprises the first indication information.
The terminal device of claim 81 or 82, wherein the determining module is specifically configured to:

generating second indication information according to the information type and/or the information bit number of the feedback information, wherein the second indication information is used for the second terminal to determine the information type and/or the information bit number of the feedback information; the communication module is further configured to:

and sending the second indication information to the second terminal.
The terminal device of claim 98, wherein the second indication information is used to indicate a target index value corresponding to an information type of the feedback information.
The terminal device of claim 99, wherein the determining module is specifically configured to:

determining a target index value corresponding to the information type of the feedback information according to the information type of the feedback information and a fourth mapping relation, wherein the fourth mapping relation comprises a corresponding relation between at least one index value and at least one information type, and the at least one index value comprises the target index value;

and generating the second indication information according to the target index value corresponding to the information type of the feedback information.
The terminal device of claim 100, wherein the information type corresponding to the target index value comprises one or more information types.
The terminal device according to claim 100 or 101, wherein the fourth mapping relationship is pre-configuration information or the fourth mapping relationship is network configuration information.
The terminal device of claim 98, wherein the second indication information is used for indicating the information bit number of the feedback information.
The terminal device according to claim 98, wherein the second indication information is used to indicate a target format corresponding to an information type and/or an information bit number of the feedback information.
The terminal device of claim 104, wherein the determining module is specifically configured to:

determining a target format corresponding to the information type of the feedback information according to the information type of the feedback information and a fifth mapping relation, wherein the fifth mapping relation comprises a corresponding relation between at least one format and at least one information type, and the at least one format comprises the target format;

and generating the second indication information according to a target format corresponding to the information type of the feedback information.
The terminal device of claim 105, wherein the fifth mapping relationship is pre-configured information or wherein the fifth mapping relationship is network configuration information.
The terminal device of claim 104, wherein the determining module is specifically configured to:

determining a target format corresponding to the information bit number of the feedback information according to the information bit number of the feedback information and a sixth mapping relation, wherein the sixth mapping relation comprises a corresponding relation between at least one format and at least one information bit number, and the at least one format comprises the target format;

and generating the second indication information according to a target format corresponding to the information bit number of the feedback information.
The terminal device of claim 107, wherein the information bit number of the feedback information comprises information bit numbers corresponding to one or more information types.
The terminal device according to claim 107 or 108, wherein the sixth mapping relationship is pre-configuration information or the sixth mapping relationship is network configuration information.
The terminal device of any one of claims 98 to 109, wherein the communication module is specifically configured to:

and sending Sideline Control Information (SCI) to the second terminal, wherein the SCI comprises the second indication information.
The terminal device of any one of claims 98-109, wherein the determining module is further configured to:

determining the type or format of a side row feedback channel, wherein the side row feedback channel is used for carrying the feedback information.
The terminal device of claim 111, wherein the determining module is specifically configured to:

and determining the type or format of the sideline feedback channel according to the information type and/or the information bit number of the feedback information.
The terminal device of claim 112, wherein the determining module is more specifically configured to:

if the information bit number of the feedback information is less than or equal to K, determining to use a first type of side-line feedback channel, or determining to use a first format of side-line feedback channel; alternatively, the first and second electrodes may be,

if the information bit number of the feedback information is larger than K, determining to use a second type of side line feedback channel, or determining to use a second format of side line feedback channel; alternatively, the first and second electrodes may be,

if the information type of the feedback information is ACK or NACK, determining to use a third type of side-line feedback channel or determining to use a third format of side-line feedback channel; alternatively, the first and second electrodes may be,

if the information type of the feedback information is feedback information of other types except ACK or NACK, or the feedback information comprises at least two feedback information types, determining to use a fourth type of side-row feedback channel, or determining to use a fourth format of feedback channel;

wherein K is a positive integer.
The terminal device of claim 113, wherein the first type of side row feedback channel, or the first format of side row feedback channel, or the third type of side row feedback channel, or the third format of side row feedback channel, occupies M time domain symbols in the time domain;

wherein M is a positive integer less than or equal to 4.
The terminal device of claim 113, wherein the second type of side row feedback channel, or the second format of side row feedback channel, or the fourth type of side row feedback channel, or the fourth format of side row feedback channel, occupies N time domain symbols in the time domain;

where N is a positive integer, N is greater than or equal to 7, and N is less than or equal to P, where P is the number of time domain symbols included in one slot.
The terminal device of claim 111, wherein the determining module is specifically configured to:

determining the type or format of the side-row feedback channel according to configuration information; wherein the configuration information is pre-configuration information or information of network equipment configuration.
The terminal device of claim 111, the communication module further configured to:

and receiving third indication information sent by the second terminal, wherein the determining module is configured to determine the type or format of the sidelink feedback channel according to the third indication information.
The terminal device of claim 111, the communication module further configured to:

and receiving fourth indication information sent by a third terminal, wherein the determining module is configured to determine the type or format of the sidelink feedback channel according to the fourth indication information, and the first terminal, the second terminal, and the third terminal are terminals in the same communication group, and the third terminal is a group head of the communication group.
The terminal device of any one of claims 111 to 118, wherein the sidelink feedback channel comprises automatic gain control symbols and/or guard interval symbols.
The terminal device of any one of claims 81-119, wherein the information type of the feedback information comprises at least one of:

channel quality indication information (CQI);

precoding matrix indication information, PMI;

rank indication information RI;

reference signal received power, RSRP;

reference signal received quality, RSRQ;

a Received Signal Strength Indication (RSSI);

interference indication information; and

and (4) path loss information.
A terminal device, characterized in that the terminal device comprises:

the communication module is used for receiving a channel sent by a first terminal;

a determining module, configured to determine an information type and/or an information bit number of the feedback information of the channel, and generate the feedback information according to the information type and/or the information bit number of the feedback information;

the communication module is further configured to send the feedback information to the first terminal.
The terminal device of claim 121, wherein the information type of the feedback information comprises at least one of the following information:

acknowledgement ACK, non-acknowledgement NACK, channel state information CSI, power information and beam information.
The terminal device of claim 121 or 122, wherein the determining module is further configured to:

generating first indication information according to the information type and/or the information bit number of the feedback information, wherein the first indication information is used for the first terminal to determine the information type and/or the information bit number of the feedback information; the communication module is further configured to:

and the terminal equipment sends the first indication information to the first terminal.
The terminal device of claim 123, wherein the first indication information is used to indicate a target index value corresponding to an information type of the feedback information.
The terminal device of claim 124, wherein the determining module is specifically configured to:

determining the target index corresponding to the information type of the feedback information according to the information type of the feedback information and a first mapping relation, wherein the first mapping relation comprises a corresponding relation between at least one index value and at least one information type, and the at least one index value comprises the target index value;

and generating the first indication information according to the target index corresponding to the information type of the feedback information.
The terminal device of claim 125, wherein the determining module is further configured to:

and determining the information bit number of the feedback information according to the information type of the feedback information.
The terminal device of claim 125 or 126, wherein the information type corresponding to the target index value comprises one or more information types.
The terminal device of any one of claims 125-127, wherein the first mapping relationship is pre-configured information or wherein the first mapping relationship is network configuration information.
The terminal device of claim 123, wherein the first indication information is used to indicate the information bit number of the feedback information.
The terminal device of claim 123, wherein the first indication information is used to indicate a target format corresponding to an information type and/or an information bit number of the feedback information.
The terminal device of claim 130, wherein the determining module is specifically configured to:

determining the target format corresponding to the information bit number of the feedback information according to the information bit number of the feedback information and a second mapping relation, wherein the second mapping relation comprises a corresponding relation between at least one format and at least one information bit number, and the at least one format comprises the target format;

and generating the first indication information according to the target format corresponding to the information bit number of the feedback information.
The terminal device of claim 131, wherein the number of information bits for each of the at least one format comprises a sum of information bits for one information type or a plurality of information types.
The terminal device of claim 131 or 132, wherein the second mapping relationship is pre-configuration information or wherein the second mapping relationship is network configuration information.
The terminal device of claim 130, wherein the determining module is specifically configured to:

determining the target format corresponding to the information type of the feedback information according to the information type of the feedback information and a third mapping relation, wherein the third mapping relation comprises a corresponding relation between at least one format and at least one information type, and the at least one format comprises the target format;

and generating the first indication information according to the target format corresponding to the information type of the feedback information.
The terminal device of claim 134, wherein the information type for each of the at least one format comprises one or more information types.
The terminal device of claim 134 or 135, wherein the third mapping relationship is pre-configuration information or wherein the third mapping relationship is network configuration information.
The terminal device of any one of claims 123 to 136, wherein the communication module is specifically configured to:

and sending Sideline Control Information (SCI) to the first terminal, wherein the SCI comprises the first indication information.
The terminal device of claim 121 or 122, wherein the communication module is further configured to:

receiving second indication information sent by the first terminal, wherein the second indication information is used for the second end to determine the information type of the feedback information and/or the information bit number of the feedback information; the determining module is specifically configured to:

and determining the information type and/or the information bit number of the feedback information according to the second indication information.
The terminal device of claim 138, wherein the second indication information is used for indicating a target index value corresponding to an information type of the feedback information.
The terminal device of claim 139, wherein the determining module is specifically configured to:

the second indication information and a fourth mapping relation determine an information type corresponding to the target index value, the fourth mapping relation includes a corresponding relation between at least one index value and at least one information type, and the at least one index value includes the target index value;

and determining the information type corresponding to the target index value as the information type of the feedback information.
The terminal device of claim 140, wherein the information type corresponding to the target index value comprises one or more information types.
The terminal device of claim 140 or 141, wherein the fourth mapping relationship is pre-configuration information or the fourth mapping relationship is network configuration information.
The terminal device of claim 138, wherein the second indication information is used for indicating the information bit number of the feedback information.
The terminal device of claim 128, wherein the second indication information is used to indicate a target format corresponding to an information type and/or an information bit number of the feedback information.
The terminal device of claim 144, wherein the determining module is specifically configured to:

determining an information type corresponding to a target format according to the second indication information and a fifth mapping relation, wherein the fifth mapping relation comprises a corresponding relation between at least one format and at least one information type, and the at least one format comprises the target format;

and determining the information type corresponding to the target format as the information type of the feedback information.
The terminal device of claim 145, wherein the fifth mapping relationship is pre-configured information or wherein the fifth mapping relationship is network configuration information.
The terminal device of claim 144, wherein the determining unit is specifically configured to:

determining an information bit number corresponding to the target format according to the second indication information and a sixth mapping relation, wherein the sixth mapping relation comprises a corresponding relation between at least one format and at least one information bit number, and the at least one format comprises the target format;

and determining the information bit number corresponding to the target format as the information bit number of the feedback information.
The terminal device of claim 147, wherein the information bits of the feedback information comprise information bits corresponding to one or more information types.
The terminal device of claim 147 or 148, wherein the sixth mapping relationship is pre-configuration information or wherein the sixth mapping relationship is network configuration information.
The terminal device of any one of claims 128 to 149, wherein the communication module is specifically configured to:

and receiving Sideline Control Information (SCI) sent by the first terminal, wherein the SCI comprises the second indication information.
The terminal device of any one of claims 121-150, wherein the determining module is further configured to:

determining the type or format of a side row feedback channel, wherein the side row feedback channel is used for carrying the feedback information.
The terminal device of claim 151, wherein the determining module is specifically configured to:

and determining the type or format of the sideline feedback channel according to the information type and/or the information bit number of the feedback information.
The terminal device of claim 152, wherein the determining module is more specifically configured to:

if the information bit number of the feedback information is less than or equal to K, determining to use a first type of side-line feedback channel, or determining to use a first format of side-line feedback channel; alternatively, the first and second electrodes may be,

if the information bit number of the feedback information is larger than K, determining to use a second type of side line feedback channel, or determining to use a second format of side line feedback channel; alternatively, the first and second electrodes may be,

if the information type of the feedback information is ACK or NACK, determining to use a third type of side-line feedback channel or determining to use a third format of side-line feedback channel; alternatively, the first and second electrodes may be,

if the information type of the feedback information is feedback information of other types except ACK or NACK, or the feedback information comprises at least two feedback information types, determining to use a fourth type of side-row feedback channel, or determining to use a fourth format of feedback channel;

wherein K is a positive integer.
The terminal device of claim 153, wherein the first type of side row feedback channel, or the first format of side row feedback channel, or the third type of side row feedback channel, or the third format of side row feedback channel, occupies M time domain symbols in the time domain;

wherein M is a positive integer less than or equal to 4.
The terminal device of claim 153, wherein the second type of side row feedback channel, or the second format of side row feedback channel, or the fourth type of side row feedback channel, or the fourth format of side row feedback channel occupies N time domain symbols in the time domain;

where N is a positive integer, N is greater than or equal to 7, and N is less than or equal to P, where P is the number of time domain symbols included in one slot.
The terminal device of claim 151, wherein the determining module is specifically configured to:

determining the type or format of the side-row feedback channel according to configuration information; wherein the configuration information is pre-configuration information or information of network equipment configuration.
The terminal device of claim 151, the communication module further configured to:

and the second terminal sends third indication information to the first terminal, wherein the third indication information is used for the first terminal to determine the type or the format of the side row feedback channel.
The terminal device of claim 151, the communication module further configured to:

and receiving fourth indication information sent by a third terminal, wherein the determining module is configured to determine the type or format of the sidelink feedback channel according to the fourth indication information, and the first terminal, the second terminal, and the third terminal are terminals in the same communication group, and the third terminal is a group head of the communication group.
The terminal device of any one of claims 151 to 158, wherein the sidelink feedback channel comprises automatic gain control symbols and/or guard interval symbols.
The terminal device of any one of claims 151-159, wherein the information type of the feedback information comprises at least one of:

channel quality indication information (CQI);

precoding matrix indication information, PMI;

rank indication information RI;

reference signal received power, RSRP;

reference signal received quality, RSRQ;

a Received Signal Strength Indication (RSSI);

interference indication information; and

and (4) path loss information.
A terminal device, comprising:

a processor for invoking and running a computer program from a memory, the computer program comprising: instructions for performing the method of any of claims 1 to 40.
A terminal device, comprising:

a processor for invoking and running a computer program from a memory, the computer program comprising: instructions for performing the method of any of claims 41 to 80.
A chip, comprising:

a processor for invoking and running a computer program from a memory, the computer program comprising: instructions for performing the method of any of claims 1 to 40.
A chip, comprising:

a processor for invoking and running a computer program from a memory, the computer program comprising: instructions for performing the method of any of claims 41 to 80.
A storage medium for storing a computer program, the computer program comprising: instructions for performing the method of any of claims 1 to 40.
A storage medium for storing a computer program, the computer program comprising: instructions for performing the method of any of claims 41 to 80.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 40.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 41 to 80.