An information feedback method, device, and computer storage medium

Abstract

The present invention discloses an information feedback method, device, and computer storage medium. The method includes: a first terminal receives N sets of reference signals sent by a second terminal, where N is a positive integer, and the transmission resources of the reference signals between different sets are time-division; the first terminal selects a target reference signal based on the received N sets of reference signals; the first terminal sends index information of the target reference signal to the second terminal, where the index information is carried in a feedback channel.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technologies, and in particular, to an information feedback method, an apparatus, and a computer storage medium. Background Art

[0002] The vehicle-to-everything (V2X) system adopts the sidelink (SL) transmission technology based on Long Term Evolution (LTE)-Device to Device (D2D). Different from the traditional LTE system in which communication data is received or sent through a base station, the V2X system adopts the direct communication mode from terminal to terminal, and thus has higher spectral efficiency and lower transmission delay.

[0003] In 3GPP Rel-14, the V2X technology was standardized, and two transmission modes were defined: Mode 3 and Mode 4. In Mode 3, the transmission resources of the terminal are allocated by the base station. In Mode 4, the terminal determines the transmission resources by means of sensing + reservation.

[0004] In New Radio-V2X (NR-V2X), autonomous driving needs to be supported, and thus higher requirements are imposed on data interaction between vehicles, such as higher throughput, lower delay, higher reliability, larger coverage, more flexible resource allocation, etc. To meet the above requirements, multi-antenna transmission technology needs to be introduced in NR-V2X. In the multi-antenna transmission technology, how the transmitting end selects the optimal beam from multiple candidate beams is determined based on the index value of the optimal beam fed back by the receiving end.

[0005] In addition, NR-V2X needs to support various transmission modes, such as unicast, groupcast, and broadcast. When unicast transmission is performed, the receiving end needs to feed back acknowledgment (ACK) / negative acknowledgment (NACK) information and channel quality indicator (CQI) information. The transmitting end can adjust the modulation and coding scheme (MCS) and determine whether retransmission is required according to the feedback information of the receiving end.

[0006] Based on this, how to design a feedback channel to transmit feedback information in NR-V2X is a problem to be solved. Summary of the Invention

[0007] To solve the above technical problems, an embodiment of the present invention provides an information feedback method, an apparatus, and a computer storage medium.

[0008] The information feedback method provided by the embodiment of the present invention includes:

[0009] A first terminal receives N groups of reference signals sent by a second terminal, where N is a positive integer, and the transmission resources of the reference signals between different groups are time-division;

[0010] The first terminal selects a target reference signal based on the received N groups of reference signals;

[0011] The first terminal sends index information of the target reference signal to the second terminal, where the index information is carried in a feedback channel.

[0012] In the embodiment of the present invention, the value of N is indicated based on a control channel of the second terminal; or,

[0013] The value of N is determined based on a preset configuration; or,

[0014] The value of N is determined based on a base station configuration.

[0015] In the embodiment of the present invention, each group of reference signals includes M time-domain symbols, where M is a positive integer; among them, the value of M is indicated based on a control channel of the second terminal; or,

[0016] The value of M is determined based on a preset configuration; or,

[0017] The value of M is determined based on a base station configuration.

[0018] In the embodiment of the present invention, the transmission resources of the control channel of the second terminal and the transmission resources of the reference signals are time-division.

[0019] In the embodiment of the present invention, the control channel of the second terminal is not transmitted in a beamforming manner.

[0020] In the embodiment of the present invention, the reference signals of the second terminal are transmitted in a beamforming manner.

[0021] In the embodiment of the present invention, the feedback channel further includes at least one of the following: identification information of the first terminal, identification information of the second terminal.

[0022] In the embodiment of the present invention, the feedback channel includes K time-domain symbols, where K is a positive integer; among them,

[0023] The value of K is indicated based on a control channel of the first terminal; or,

[0024] The value of K is determined based on a preset configuration; or,

[0025] The value of K is determined based on the base station configuration.

[0026] In an embodiment of the present invention, when the first terminal sends the index information of the target reference signal to the second terminal, it includes:

[0027] The first terminal sends N feedback channels to the second terminal to transmit the index information of the target reference signal N times.

[0028] In an embodiment of the present invention, the method further includes:

[0029] The first terminal performs resource listening, determines at least one available resource, and selects a transmission resource for transmitting the feedback channel from the at least one available resource.

[0030] In an embodiment of the present invention, the transmission resource of the feedback channel is indicated by the control channel of the first terminal.

[0031] In an embodiment of the present invention, the method further includes:

[0032] The first terminal determines the transmission resource for transmitting the feedback channel based on the transmission resource of the reference signal.

[0033] In an embodiment of the present invention, the transmission resources of the control channel and the feedback channel of the first terminal are time-division multiplexed.

[0034] The information feedback method provided by an embodiment of the present invention includes:

[0035] The second terminal sends N groups of reference signals to the first terminal, where N is a positive integer, and the transmission resources of the reference signals between different groups are time-division multiplexed;

[0036] The second terminal receives the index information of the target reference signal sent by the first terminal, where the index information is carried in the feedback channel.

[0037] In an embodiment of the present invention, the value of N is indicated by the control channel of the second terminal; or,

[0038] The value of N is determined based on a preset configuration; or,

[0039] The value of N is determined based on the base station configuration.

[0040] In an embodiment of the present invention, each group of reference signals includes M time-domain symbols, where M is a positive integer; among them, the value of M is indicated by the control channel of the second terminal; or,

[0041] The value of M is determined based on a preset configuration; or,

[0042] The value of M is determined based on the base station configuration.

[0043] In an embodiment of the present invention, the transmission resources of the control channel and the transmission resources of the reference signal of the second terminal are time-division.

[0044] In an embodiment of the present invention, the control channel of the second terminal is not transmitted in a beamforming manner.

[0045] In an embodiment of the present invention, the reference signal of the second terminal is transmitted in a beamforming manner.

[0046] In an embodiment of the present invention, the feedback channel further includes at least one of the following: the identification information of the first terminal, the identification information of the second terminal.

[0047] In an embodiment of the present invention, the feedback channel includes K time-domain symbols, where K is a positive integer; among them,

[0048] The value of K is indicated based on the control channel of the first terminal; or,

[0049] The value of K is determined based on a preset configuration; or,

[0050] The value of K is determined based on the base station configuration.

[0051] In an embodiment of the present invention, the second terminal receives the index information of the target reference signal sent by the first terminal, including:

[0052] The second terminal receives N feedback channels sent by the first terminal, where the feedback channel includes the index information.

[0053] In an embodiment of the present invention, the method further includes:

[0054] The second terminal receives the control information of the first terminal, and determines the transmission resources for transmitting the feedback channel based on the control information of the first terminal.

[0055] In an embodiment of the present invention, the method further includes:

[0056] The second terminal determines the transmission resources for transmitting the feedback channel based on the transmission resources of the reference signal.

[0057] The information feedback device provided in an embodiment of the present invention is applied to the first terminal and includes:

[0058] A receiving unit, configured to receive N sets of reference signals sent by a second terminal, where N is a positive integer, and the transmission resources of the reference signals between different sets are time-division multiplexed;

[0059] A selecting unit, configured to select a target reference signal based on the received N sets of reference signals;

[0060] A sending unit, configured to send index information of the target reference signal to the second terminal, where the index information is carried in a feedback channel.

[0061] In an embodiment of the present invention, the value of N is indicated based on a control channel of the second terminal; or,

[0062] the value of N is determined based on a preset configuration; or,

[0063] the value of N is determined based on a base station configuration.

[0064] In an embodiment of the present invention, each set of reference signals includes M time-domain symbols, where M is a positive integer; among them,

[0065] the value of M is indicated based on a control channel of the second terminal; or,

[0066] the value of M is determined based on a preset configuration; or,

[0067] the value of M is determined based on a base station configuration.

[0068] In an embodiment of the present invention, the transmission resources of the control channel of the second terminal and the transmission resources of the reference signals are time-division multiplexed.

[0069] In an embodiment of the present invention, the control channel of the second terminal is not transmitted in a beamforming manner.

[0070] In an embodiment of the present invention, the reference signals of the second terminal are transmitted in a beamforming manner.

[0071] In an embodiment of the present invention, the feedback channel further includes at least one of the following: identification information of the first terminal, identification information of the second terminal.

[0072] In an embodiment of the present invention, the feedback channel includes K time-domain symbols, where K is a positive integer; among them,

[0073] the value of K is indicated based on a control channel of the first terminal; or,

[0074] the value of K is determined based on a preset configuration; or,

[0075] the value of K is determined based on a base station configuration.

[0076] In an embodiment of the present invention, the sending unit is configured to send a feedback channel to the second terminal N times to transmit the index information of the target reference signal N times.

[0077] In an embodiment of the present invention, the apparatus further includes:

[0078] A resource listening unit, configured to perform resource listening, determine at least one available resource, and select a transmission resource for transmitting the feedback channel from the at least one available resource.

[0079] In an embodiment of the present invention, the transmission resource of the feedback channel is indicated by the control channel of the first terminal.

[0080] In an embodiment of the present invention, the apparatus further includes:

[0081] A resource determining unit, configured to determine a transmission resource for transmitting the feedback channel based on the transmission resource of the reference signal.

[0082] In an embodiment of the present invention, the transmission resources of the control channel and the feedback channel of the first terminal are time-division.

[0083] The information feedback apparatus provided in an embodiment of the present invention is applied to a second terminal and includes:

[0084] A sending unit, configured to send N groups of reference signals to the first terminal, where N is a positive integer, and the transmission resources of the reference signals between different groups are time-division;

[0085] A receiving unit, configured to receive the index information of the target reference signal sent by the first terminal, where the index information is carried in the feedback channel.

[0086] In an embodiment of the present invention, the value of N is indicated based on the control channel of the second terminal; or,

[0087] The value of N is determined based on a preset configuration; or,

[0088] The value of N is determined based on the base station configuration.

[0089] In an embodiment of the present invention, each group of reference signals includes M time-domain symbols, where M is a positive integer; among them,

[0090] The value of M is indicated based on the control channel of the second terminal; or,

[0091] The value of M is determined based on a preset configuration; or,

[0092] The value of M is determined based on the base station configuration.

[0093] In an embodiment of the present invention, the transmission resources of the control channel and the transmission resources of the reference signal of the second terminal are time-division multiplexed.

[0094] In an embodiment of the present invention, the control channel of the second terminal is not transmitted in a beamforming manner.

[0095] In an embodiment of the present invention, the reference signal of the second terminal is transmitted in a beamforming manner.

[0096] In an embodiment of the present invention, the feedback channel further includes at least one of the following: the identification information of the first terminal and the identification information of the second terminal.

[0097] In an embodiment of the present invention, the feedback channel includes K time-domain symbols, where K is a positive integer; among them,

[0098] the value of K is indicated based on the control channel of the first terminal; or,

[0099] the value of K is determined based on a preset configuration; or,

[0100] the value of K is determined based on the base station configuration.

[0101] In an embodiment of the present invention, the receiving unit is configured to receive N feedback channels sent by the first terminal, where the feedback channel includes the index information.

[0102] In an embodiment of the present invention, the apparatus further includes: a determining unit, configured to receive the control information of the first terminal and determine the transmission resources for transmitting the feedback channel based on the control information of the first terminal.

[0103] In an embodiment of the present invention, the apparatus further includes: a determining unit, configured to determine the transmission resources for transmitting the feedback channel based on the transmission resources of the reference signal.

[0104] The computer storage medium provided by the embodiment of the present invention stores computer-executable instructions thereon, and when the computer-executable instructions are executed by a processor, the above information feedback method is implemented.

[0105] In the technical solution of the embodiment of the present invention, a first terminal receives N groups of reference signals sent by a second terminal, where N is a positive integer. Among them, the transmission resources of the reference signals between different groups are time-division; the first terminal selects a target reference signal based on the received N groups of reference signals; the first terminal sends index information of the target reference signal to the second terminal, where the index information is carried in a feedback channel. By adopting the technical solution of the embodiment of the present invention, the second terminal sends N groups of reference signals by means of beam scanning, and the first terminal sends index information of the target reference signal (i.e., beam index information) to the second terminal through a newly designed feedback channel. In addition, the first terminal repeats sending the feedback channel N times, so that the receiving end can receive the index information using N different beams, ensuring the receiving performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0106] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0107] Figure 1 It is a schematic diagram of a scenario of Mode 3 in a vehicle-to-everything network;

[0108] Figure 2 It is a schematic diagram of a scenario of Mode 4 in a vehicle-to-everything network;

[0109] Figure 3 It is a schematic flow chart of the information feedback method according to an embodiment of the present invention Figure 1 ;

[0110] Figure 4 It is a schematic flow chart of the information feedback method according to an embodiment of the present invention Figure 2 ;

[0111] Figure 5 It is a schematic diagram of the structural composition of the information feedback device according to an embodiment of the present invention Figure 1 ;

[0112] Figure 6 It is a schematic diagram of the structural composition of the information feedback device according to an embodiment of the present invention Figure 2 ;

[0113] Figure 7 It is a schematic diagram of the structural composition of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0114] In order to be able to understand the features and technical content of the embodiments of the present invention in more detail, the implementation of the embodiments of the present invention will be described in detail below with reference to the drawings. The attached drawings are for reference and illustration only and are not used to limit the embodiments of the present invention.

[0115] To facilitate the understanding of the technical solutions of the embodiments of the present invention, the following separately explains and describes Mode 3 and Mode 4 in the vehicle-to-everything (V2X) network.

[0116] Mode 3: As Figure 1 shown, the transmission resources of the in-vehicle terminal are allocated by a base station (such as an evolved NodeB (eNB) in LTE). Specifically, the base station sends a control message for indicating the grant resources to the in-vehicle terminal through the downlink (DL). Then, the in-vehicle terminal sends data on the SL according to the resources allocated by the base station. In Mode 3, the base station can allocate resources for single transmission to the in-vehicle terminal, or allocate semi-static transmission resources to the terminal.

[0117] Mode 4: As Figure 2 shown, the in-vehicle terminal adopts a transmission method of listening + reservation. The in-vehicle terminal obtains a set of available transmission resources by listening in the resource pool, and randomly selects a resource from the set of transmission resources for data transmission. Since the services in the V2X system have periodic characteristics, the in-vehicle terminal usually adopts a semi-static transmission method, that is, after the in-vehicle terminal selects a transmission resource, it will continuously use this resource in multiple transmission cycles, thereby reducing the probability of resource reselection and resource conflict. The in-vehicle terminal will carry information for reserving the next transmission resource in the control information of this transmission, so that other terminals can judge whether this resource is reserved and used by the in-vehicle terminal by detecting the control information of the in-vehicle terminal, achieving the purpose of reducing resource conflict.

[0118] It should be noted that in LTE-V2X, Mode 3 is used to indicate that the transmission resources of the in-vehicle terminal are allocated by the base station, and Mode 4 is used to indicate that the transmission resources of the in-vehicle terminal are independently selected by the terminal. In NR-V2X, new transmission modes can be defined, and the present invention does not limit this.

[0119] In NR-V2X, it is necessary to introduce multi-antenna transmission technology. Multi-antenna can bring the following benefits:

[0120] 1) Higher transmission rate: Using the multiplexing transmission method of multi-antenna, multiple data streams can be transmitted on the same time-frequency resource, thereby improving the transmission rate.

[0121] 2) Larger coverage range and higher reliability: Using beamforming technology, the energy can be concentrated in a very narrow beam, thereby improving the signal-to-interference-plus-noise ratio (SINR) at the receiving end, thereby increasing the receiving success probability at the receiving end, or increasing the transmission distance.

[0122] Here, beamforming can improve the coverage and reliability. The process for the transmitter to select the optimal beam from multiple candidate beams is as follows: The transmitter needs to perform beam scanning and transmit data using different beams respectively; the receiver receives the data transmitted by each beam, so as to select a beam with the best transmission quality as the optimal beam, and feedback the index value of this beam to the transmitter; in subsequent data transmissions, the transmitter can use this optimal beam for data transmission.

[0123] In the above solution, the receiver needs to feedback the index value of the beam to the transmitter. How to feedback beam information in NR-V2X is a problem to be solved:

[0124] 1) During the beam scanning process, beamforming is used for data transmission. If beamforming is not used during the process of beam information feedback, it is difficult to ensure the transmission distance and reception performance.

[0125] 2) If beamforming is used in the transmission of feedback information, the terminal that sends the feedback information (i.e., the transmitter of the feedback information) obtains resources through competition. How the terminal that receives the feedback information (i.e., the receiver of the feedback information) obtains the resources obtained by the transmitter of the feedback information and uses an appropriate beam to align with the transmitter of the feedback information are all problems to be solved by the technical solutions of the embodiments of the present invention.

[0126] Figure 3 Flow schematic of the information feedback method according to the embodiments of the present invention Figure 1 , as Figure 3 shown, the information feedback method includes:

[0127] Step 301: The first terminal receives N groups of reference signals sent by the second terminal, where N is a positive integer, and the transmission resources of the reference signals between different groups are time-division.

[0128] In the embodiments of the present invention, the types of the first terminal and the second terminal are not limited, and they can be devices such as vehicle-mounted terminals, mobile phones, and laptops.

[0129] In the embodiments of the present invention, the second terminal uses beam scanning for data transmission. The total number of beams of the second terminal is N, and each beam scanning occupies M data symbols (that is, each group of reference signals includes M time-domain symbols, where M is a positive integer). Therefore, it takes N×M symbols to complete one beam scanning, and the first terminal receives the data transmitted through beam scanning.

[0130] It should be noted that, unless otherwise specified, the symbols mentioned in the present invention refer to Orthogonal Frequency Division Multiplexing (OFDM) symbols.

[0131] It should be noted that N is the total number of beams of the second terminal, or the total number of beams to be scanned by the second terminal.

[0132] In an embodiment of the present invention, the total number of beams N of the second terminal can be determined in the following ways:

[0133] 1) The value of N is indicated based on the control channel of the second terminal; or,

[0134] 2) The value of N is determined based on a preset configuration; or,

[0135] 3) The value of N is determined based on the base station configuration.

[0136] In an embodiment of the present invention, the number of symbols M occupied by each beam scan can be determined in the following ways:

[0137] 1) The value of M is indicated based on the control channel of the second terminal; or,

[0138] 2) The value of M is determined based on a preset configuration; or,

[0139] 3) The value of M is determined based on the base station configuration.

[0140] In one embodiment, the transmission resources of the control channel and the reference signal of the second terminal are time-division multiplexed. Further, the control channel of the second terminal is not transmitted in a beamforming manner. The reference signal of the second terminal is transmitted in a beamforming manner.

[0141] Here, the control channel and the data channel of the second terminal are transmitted in a Time Division Multiplexing (TDM) manner. This is because: if the control channel and the data channel of the second terminal are transmitted in a Frequency Division Multiplexing (FDM) manner, it is difficult to achieve that the control channel does not use beamforming while the data channel uses beamforming for transmission.

[0142] Step 302: The first terminal selects a target reference signal based on the received N groups of reference signals.

[0143] In one embodiment, after the first terminal receives N sets of reference signals sent by the second terminal in a beam scanning manner, it selects a reference signal with the best transmission quality from the N sets of reference signals (corresponding to N beams) as the optimal reference signal, that is, the target reference signal.

[0144] Step 303: The first terminal sends the index information of the target reference signal to the second terminal, where the index information is carried in the feedback channel.

[0145] In the embodiments of the present invention, a new channel is designed, that is, the feedback channel is used to transmit the index information of the target reference signal. In addition, the feedback channel can also be used to carry other feedback information, such as acknowledgment (ACK) / negative acknowledgment (NACK) information, channel quality indicator (CQI) information, precoding matrix indicator (PMI) information, rank indication (RI) information, power indication information, etc.

[0146] In one embodiment, the feedback channel further includes at least one of the following: the identification information of the first terminal, the identification information of the second terminal.

[0147] In the embodiments of the present invention, the feedback channel includes K time-domain symbols, where K is a positive integer; the number of symbols K occupied by the feedback channel can be determined in the following ways:

[0148] 1) The value of K is indicated based on the control channel of the first terminal; or,

[0149] 2) The value of K is determined based on a preset configuration; or,

[0150] 3) The value of K is determined based on the base station configuration.

[0151] In the embodiments of the present invention, the first terminal sends the feedback channel to the second terminal N times to transmit the index information of the target reference signal N times.

[0152] Here, each feedback channel occupies K symbols, so the total number of symbols occupied by the feedback channel is N×K, where N is the total number of beams of the second terminal.

[0153] In the embodiments of the present invention, the purpose of the first terminal sending the feedback channel to the second terminal N times is that the second terminal uses the beam scanning method to align N beams with the first terminal to receive N feedback channels, where one beam corresponds to the reception of one feedback channel.

[0154] In the embodiments of the present invention, the transmission resources of the feedback channel can be determined in the following ways:

[0155] Method 1: The feedback resources of the first terminal are obtained by listening.

[0156] Specifically, the first terminal performs resource listening to determine at least one available resource, and selects the transmission resource for transmitting the feedback channel from the at least one available resource. Further, the transmission resource of the feedback channel is indicated by the control channel of the first terminal.

[0157] Method 2: The feedback resources of the first terminal are determined by the transmission resources of the data sent by the second terminal.

[0158] Specifically, the first terminal determines the transmission resource for transmitting the feedback channel based on the transmission resource of the reference signal. For example: the transmission resource of the feedback channel can be determined by the index of the lowest physical resource block (PRB, Physical Resource Block) where the data or the reference signal is located or the index of the lowest sub-band.

[0159] In the above solution, the time domain length of the transmission resource of the feedback channel is N×K. Here, each feedback channel occupies K symbols. If the feedback channel is transmitted N times, the total number of symbols occupied by the feedback channel is N×K.

[0160] In the embodiments of the present invention, the control channel in the first terminal may or may not be transmitted. If the first terminal does not transmit the control channel, the value of K and / or the transmission resource of the feedback channel are obtained by the second terminal through a preset operation; for example, the second terminal obtains the value of K through a preset configuration or a base station configuration, and the second terminal determines the transmission resource of the feedback channel based on the transmission resource of the reference signal;

[0161] If the first terminal transmits the control channel, the value of K and / or the transmission resource of the feedback channel are obtained by the second terminal through the control channel of the first terminal, or obtained by the second terminal through a preset operation; wherein, the transmission resource of the control channel of the first terminal and the transmission resource of the feedback channel are time-division multiplexed.

[0162] Figure 4 Schematic flow of the information feedback method according to the embodiments of the present invention Figure 2 , as Figure 4 shown, the information feedback method includes:

[0163] Step 401: The second terminal sends N groups of reference signals to the first terminal, where N is a positive integer, and the transmission resources of the reference signals between different groups are time-division multiplexed.

[0164] In an embodiment of the present invention, the second terminal performs data transmission by means of beam scanning. The total number of beams of the second terminal is N, and each beam scanning occupies M data symbols (that is, each group of reference signals includes M time-domain symbols, and M is a positive integer). Therefore, it takes N×M symbols to complete one beam scanning, and the first terminal receives the data transmitted by beam scanning.

[0165] It should be noted that N is the total number of beams of the second terminal, or the total number of beams to be scanned by the second terminal.

[0166] In an embodiment of the present invention, the total number of beams N of the second terminal can be determined in the following ways:

[0167] 1) The value of N is indicated based on the control channel of the second terminal; or,

[0168] 2) The value of N is determined based on a preset configuration; or,

[0169] 3) The value of N is determined based on the base station configuration.

[0170] In an embodiment of the present invention, the number of symbols M occupied by each beam scanning can be determined in the following ways:

[0171] 1) The value of M is indicated based on the control channel of the second terminal; or,

[0172] 2) The value of M is determined based on a preset configuration; or,

[0173] 3) The value of M is determined based on the base station configuration.

[0174] In an embodiment, the transmission resources of the control channel and the transmission resources of the reference signal of the second terminal are time-division. Further, the control channel of the second terminal is not transmitted by means of beamforming. The reference signal of the second terminal is transmitted by means of beamforming.

[0175] Here, the control channel and the data channel of the second terminal are transmitted by means of TDM. The reason is as follows: If the control channel and the data channel of the second terminal are transmitted by means of FDM, it is difficult to achieve that the control channel does not use beamforming while the data channel uses beamforming for transmission.

[0176] Step 402: The second terminal receives the index information of the target reference signal sent by the first terminal, where the index information is carried in the feedback channel.

[0177] In one embodiment, the feedback channel further includes at least one of the following: the identification information of the first terminal and the identification information of the second terminal.

[0178] In the embodiments of the present invention, the feedback channel includes K time-domain symbols, where K is a positive integer; among them, the number of symbols K occupied by the feedback channel can be determined in the following manner:

[0179] 1) The value of K is indicated based on the control channel of the first terminal; or,

[0180] 2) The value of K is determined based on a preset configuration; or,

[0181] 3) The value of K is determined based on the base station configuration.

[0182] In the embodiments of the present invention, the second terminal receives N feedback channels sent by the first terminal, where the feedback channel includes the index information. Further, the second terminal receives the N feedback channels sent by the first terminal through N beams, where one beam corresponds to receiving one feedback channel.

[0183] In the embodiments of the present invention, the transmission resources of the feedback channel can be determined in the following manner:

[0184] Method 1: The second terminal receives the control information of the first terminal and determines the transmission resources for transmitting the feedback channel based on the control information of the first terminal.

[0185] Method 2: The second terminal determines the transmission resources for transmitting the feedback channel based on the transmission resources of the reference signal.

[0186] Specifically, the second terminal determines the transmission resources for transmitting the feedback channel based on the transmission resources of the reference signal. For example: the transmission resources of the feedback channel can be determined by the index of the lowest PRB or the index of the lowest subband where the data or the reference signal is located.

[0187] Figure 5 Schematic diagram of the structural composition of the information feedback device according to the embodiments of the present invention Figure 1 , the information feedback device can be applied to the first terminal, as Figure 5 shown, the information feedback device includes:

[0188] A receiving unit 501, configured to receive N groups of reference signals sent by the second terminal, where N is a positive integer, and the transmission resources of the reference signals between different groups are time-division;

[0189] A selecting unit 502, configured to select a target reference signal based on the received N groups of reference signals;

[0190] A transmitting unit 503, configured to send index information of the target reference signal to the second terminal, where the index information is carried in a feedback channel.

[0191] In one embodiment, the value of N is indicated based on a control channel of the second terminal; or,

[0192] the value of N is determined based on a preset configuration; or,

[0193] the value of N is determined based on a base station configuration.

[0194] In an embodiment of the present invention, the second terminal performs data transmission by means of beam scanning. It should be noted that N is the total number of beams of the second terminal, or the total number of beams to be scanned by the second terminal.

[0195] In one embodiment, each group of reference signals includes M time-domain symbols, where M is a positive integer; among them, the value of M is indicated based on a control channel of the second terminal; or,

[0196] the value of M is determined based on a preset configuration; or,

[0197] the value of M is determined based on a base station configuration.

[0198] It should be noted that the symbols mentioned in the present invention refer to OFDM symbols unless otherwise specified.

[0199] In one embodiment, transmission resources of the control channel of the second terminal and transmission resources of the reference signal are time-division multiplexed.

[0200] In one embodiment, the control channel of the second terminal is not transmitted by means of beamforming.

[0201] In one embodiment, the reference signal of the second terminal is transmitted by means of beamforming.

[0202] In one embodiment, the feedback channel further includes at least one of the following: identification information of the first terminal, identification information of the second terminal.

[0203] In one embodiment, the feedback channel includes K time-domain symbols, where K is a positive integer; among them,

[0204] the value of K is indicated based on a control channel of the first terminal; or,

[0205] the value of K is determined based on a preset configuration; or,

[0206] the value of K is determined based on a base station configuration.

[0207] In one embodiment, the sending unit 503 is configured to send a feedback channel to the second terminal N times to transmit the index information of the target reference signal N times.

[0208] In one embodiment, the apparatus further includes:

[0209] A resource listening unit 504, configured to perform resource listening, determine at least one available resource, and select a transmission resource for transmitting the feedback channel from the at least one available resource.

[0210] In one embodiment, the transmission resource of the feedback channel is indicated by the control channel of the first terminal.

[0211] In one embodiment, the apparatus further includes:

[0212] A resource determining unit 505, configured to determine a transmission resource for transmitting the feedback channel based on the transmission resource of the reference signal.

[0213] In one embodiment, the transmission resources of the control channel and the feedback channel of the first terminal are time-division multiplexed.

[0214] Those skilled in the art should understand that Figure 5 The implementation functions of the units in the information feedback device shown can be understood with reference to the relevant descriptions of the foregoing information feedback method. Figure 5 The functions of the units in the information feedback device shown can be implemented by a program running on a processor or by specific logic circuits.

[0215] Figure 6 This is a schematic structural composition of the information feedback device according to an embodiment of the present invention Figure 2 , and the information feedback device can be applied to a second terminal. As Figure 6 shown, the information feedback device includes:

[0216] A sending unit 601, configured to send N groups of reference signals to a first terminal, where N is a positive integer, and the transmission resources of the reference signals between different groups are time-division multiplexed;

[0217] A receiving unit 603, configured to receive the index information of the target reference signal sent by the first terminal, where the index information is carried in a feedback channel.

[0218] In one embodiment, the value of N is indicated based on the control channel of the second terminal; or,

[0219] the value of N is determined based on a preset configuration; or,

[0220] The value of N is determined based on the base station configuration.

[0221] In an embodiment of the present invention, the second terminal uses beam scanning to send data. It should be noted that N is the total number of beams of the second terminal, or the total number of beams to be scanned by the second terminal.

[0222] In an embodiment, each group of reference signals includes M time-domain symbols, where M is a positive integer; among them, the value of M is indicated based on the control channel of the second terminal; or,

[0223] The value of M is determined based on a preset configuration; or,

[0224] The value of M is determined based on the base station configuration.

[0225] It should be noted that the symbols mentioned in the present invention refer to OFDM symbols unless otherwise specified.

[0226] In an embodiment, the transmission resources of the control channel and the transmission resources of the reference signal of the second terminal are time-division multiplexed.

[0227] In an embodiment, the control channel of the second terminal does not use beamforming for transmission.

[0228] In an embodiment, the reference signal of the second terminal uses beamforming for transmission.

[0229] In an embodiment, the feedback channel further includes at least one of the following: the identification information of the first terminal, the identification information of the second terminal.

[0230] In an embodiment, the feedback channel includes K time-domain symbols, where K is a positive integer; among them,

[0231] The value of K is indicated based on the control channel of the first terminal; or,

[0232] The value of K is determined based on a preset configuration; or,

[0233] The value of K is determined based on the base station configuration.

[0234] In an embodiment, the receiving unit 603 is configured to receive N feedback channels sent by the first terminal, where the feedback channel includes the index information.

[0235] In an embodiment, the apparatus further includes: a determining unit 602, configured to receive the control information of the first terminal and determine the transmission resources for transmitting the feedback channel based on the control information of the first terminal.

[0236] In one embodiment, the apparatus further includes a determining unit 602, configured to determine a transmission resource for transmitting the feedback channel based on the transmission resource of the reference signal.

[0237] Those skilled in the art should understand that Figure 6 the implementation functions of the units in the illustrated information feedback apparatus can be understood with reference to the relevant descriptions of the foregoing information feedback method. Figure 6 The functions of the units in the illustrated information feedback apparatus can be implemented by a program running on a processor or by specific logic circuits.

[0238] The above technical solutions of the embodiments of the present invention are applicable not only to the vehicle networking system, but also to other end-to-end communication systems. The terminals in the embodiments of the present invention may be vehicle-mounted terminals, handheld terminals, personal digital assistants (PDAs), wearable terminals, and the like.

[0239] If the above information feedback apparatus in the embodiments of the present invention is implemented in the form of software function modules and sold or used as an independent product, it may also be stored in a computer-readable storage medium. Based on such an understanding, the technical solutions of the embodiments of the present invention essentially or the part that contributes to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in the embodiments of the present invention. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROMs), magnetic disks, or optical discs that can store program codes. In this way, the embodiments of the present invention are not limited to any specific combination of hardware and software.

[0240] Correspondingly, the embodiments of the present invention further provide a computer storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, the above information feedback method of the embodiments of the present invention is implemented.

[0241] Figure 7 is a schematic structural diagram of a computer device according to an embodiment of the present invention, and the computer device may be any type of terminal. For example Figure 7As shown, the computer device 100 may include one or more (only one is shown in the figure) processors 1002 (the processor 1002 may include, but is not limited to, processing devices such as microprocessors, microcontroller units (MCUs), programmable logic devices, or field programmable gate arrays (FPGAs)), a memory 1004 for storing data, and a transmission device 1006 for communication functions. Those of ordinary skill in the art can understand that Figure 7 the structure shown is only illustrative and does not limit the structure of the above-mentioned electronic device. For example, the computer device 100 may further include more or fewer components than those Figure 7 shown in, or have a different configuration from that Figure 7 shown.

[0242] The memory 1004 can be used to store software programs and modules of application software, such as the program instructions / modules corresponding to the methods in the embodiments of the present invention. The processor 1002 executes various functional applications and data processing by running the software programs and modules stored in the memory 1004, that is, implements the above-mentioned methods. The memory 1004 may include high-speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memories. In some instances, the memory 1004 may further include a memory remotely set relative to the processor 1002, and these remote memories can be connected to the computer device 100 through a network. Examples of the above-mentioned network include, but are not limited to, the Internet, enterprise intranets, local area networks, mobile communication networks, and their combinations.

[0243] The transmission device 1006 is used to receive or send data via a network. Specific examples of the above-mentioned network may include a wireless network provided by the communication provider of the computer device 100. In one instance, the transmission device 1006 includes a network adapter or a network interface controller (NIC), which can be connected to other network devices through a base station and thus communicate with the Internet. In one instance, the transmission device 1006 can be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0244] Among the technical solutions described in the embodiments of the present invention, they can be combined arbitrarily without conflict.

[0245] In several embodiments provided by the present invention, it should be understood that the disclosed methods and intelligent devices can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined, or can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed can be through some interfaces. The indirect coupling or communication connection of devices or units can be electrical, mechanical, or other forms.

[0246] The units described above as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0247] In addition, each functional unit in the embodiments of the present invention can be all integrated in a second processing unit, or each unit can be separately used as a unit, or two or more units can be integrated in one unit. The above-mentioned integrated units can be implemented in the form of hardware, or in the form of a combination of hardware and software functional units.

[0248] As mentioned above, the above are only specific implementation manners of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered by the protection scope of the present invention.

Claims

1. An information feedback method, the method comprises: A first terminal receives N sets of reference signals sent by a second terminal, where N is a positive integer, and the transmission resources of the reference signals between different sets are time-division; The first terminal selects a target reference signal based on the received N sets of reference signals; The first terminal sends index information of the target reference signal to the second terminal, where the index information is carried in a feedback channel; Wherein, the feedback channel further includes at least one of the following: identification information of the first terminal, identification information of the second terminal.

2. The method according to claim 1, wherein, The value of N is indicated based on a control channel of the second terminal; or, The value of N is determined based on a preset configuration; or, The value of N is determined based on a base station configuration.

3. The method according to claim 1, wherein, Each set of reference signals includes M time-domain symbols, where M is a positive integer; wherein, The value of M is indicated based on a control channel of the second terminal; or, The value of M is determined based on a preset configuration; or, The value of M is determined based on a base station configuration.

4. The method according to claim 3, wherein, The transmission resources of the control channel of the second terminal and the transmission resources of the reference signals are time-division.

5. The method according to claim 3, wherein, The control channel of the second terminal is not transmitted in a beamforming manner.

6. The method according to claim 5, wherein, The reference signals of the second terminal are transmitted in a beamforming manner.

7. The method according to any one of claims 1 to 6, wherein, The feedback channel includes K time-domain symbols, where K is a positive integer; wherein, The value of K is indicated based on a control channel of the first terminal; or, The value of K is determined based on a preset configuration; or, The value of K is determined based on a base station configuration.

8. The method according to any one of claims 1 to 6, wherein, The first terminal sending the index information of the target reference signal to the second terminal includes: The first terminal sends the feedback channel N times to the second terminal to transmit the index information of the target reference signal N times.

9. The method according to any one of claims 1 to 6, wherein, The method further comprises: The first terminal performs resource listening, determines at least one available resource, and selects a transmission resource for transmitting the feedback channel from the at least one available resource.

10. The method according to claim 9, wherein, The transmission resource of the feedback channel is indicated by a control channel of the first terminal.

11. The method according to any one of claims 1 to 6, wherein, The method further comprises: The first terminal determines a transmission resource for transmitting the feedback channel based on the transmission resource of the reference signal.

12. The method according to claim 7, wherein, The transmission resources of the control channel of the first terminal and the feedback channel are time-division.

13. An information feedback method, the method comprises: The second terminal sends N sets of reference signals to the first terminal, where N is a positive integer, and the transmission resources of the reference signals between different sets are time-division multiplexed; The second terminal receives the index information of the target reference signal sent by the first terminal, where the index information is carried in the feedback channel; Wherein, the feedback channel further includes at least one of the following: the identification information of the first terminal, the identification information of the second terminal.

14. The method according to claim 13, Wherein, The value of N is indicated based on the control channel of the second terminal; or, The value of N is determined based on a preset configuration; or, The value of N is determined based on the base station configuration.

15. The method according to claim 13, Wherein, Each set of reference signals includes M time-domain symbols, where M is a positive integer; wherein, The value of M is indicated based on the control channel of the second terminal; or, The value of M is determined based on a preset configuration; or, The value of M is determined based on the base station configuration.

16. The method according to claim 15, Wherein, The transmission resources of the control channel of the second terminal and the transmission resources of the reference signals are time-division multiplexed.

17. The method according to claim 15, Wherein, The control channel of the second terminal is not transmitted in a beamforming manner.

18. The method according to claim 17, Wherein, The reference signal of the second terminal is transmitted in a beamforming manner.

19. The method according to any one of claims 13 to 18, Wherein, The feedback channel includes K time-domain symbols, where K is a positive integer; wherein, The value of K is indicated based on the control channel of the first terminal; or, The value of K is determined based on a preset configuration; or, The value of K is determined based on the base station configuration.

20. The method according to any one of claims 13 to 18, Wherein, The second terminal receiving the index information of the target reference signal sent by the first terminal includes: The second terminal receives N feedback channels sent by the first terminal, where the feedback channel includes the index information.

21. The method according to any one of claims 13 to 18, Wherein, The method further includes: The second terminal receives the control information of the first terminal, and determines the transmission resources for transmitting the feedback channel based on the control information of the first terminal.

22. The method according to any one of claims 13 to 18, Wherein, The method further includes: The second terminal determines the transmission resources for transmitting the feedback channel based on the transmission resources of the reference signals.

23. An information feedback device, the device is applied to the first terminal, the device Comprises: A receiving unit, configured to receive N sets of reference signals sent by a second terminal, where N is a positive integer, and the transmission resources of the reference signals between different sets are time-division multiplexed; A selection unit, configured to select a target reference signal based on the received N sets of reference signals; A sending unit, configured to send index information of the target reference signal to the second terminal, where the index information is carried in a feedback channel; Wherein, the feedback channel further includes at least one of the following: identification information of the first terminal and identification information of the second terminal.

24. The apparatus according to claim 23, Wherein, the value of N is indicated based on a control channel of the second terminal; or, the value of N is determined based on a preset configuration; or, the value of N is determined based on a base station configuration.

25. The apparatus according to claim 23, Wherein, each group of reference signals includes M time-domain symbols, and M is a positive integer; wherein, the value of M is indicated based on a control channel of the second terminal; or, the value of M is determined based on a preset configuration; or, the value of M is determined based on a base station configuration.

26. The apparatus according to claim 25, Wherein, transmission resources of the control channel of the second terminal and transmission resources of the reference signal are time-division multiplexed.

27. The apparatus according to claim 25, Wherein, the control channel of the second terminal is not transmitted in a beamforming manner.

28. The apparatus according to claim 27, Wherein, the reference signal of the second terminal is transmitted in a beamforming manner.

29. The apparatus according to any one of claims 23 to 28, Wherein, the feedback channel includes K time-domain symbols, and K is a positive integer; wherein, the value of K is indicated based on a control channel of the first terminal; or, the value of K is determined based on a preset configuration; or, the value of K is determined based on a base station configuration.

30. The apparatus according to any one of claims 23 to 28, Wherein, the sending unit is configured to send the feedback channel to the second terminal N times to transmit index information of the target reference signal N times.

31. The apparatus according to any one of claims 23 to 28, Wherein, the apparatus further includes: a resource listening unit, configured to perform resource listening, determine at least one available resource, and select a transmission resource for transmitting the feedback channel from the at least one available resource.

32. The apparatus according to claim 31, Wherein, the transmission resource of the feedback channel is indicated by a control channel of the first terminal.

33. The apparatus according to any one of claims 23 to 28, Wherein, the apparatus further includes: a resource determining unit, configured to determine a transmission resource for transmitting the feedback channel based on the transmission resource of the reference signal.

34. The apparatus according to claim 29, Wherein, transmission resources of the control channel of the first terminal and transmission resources of the feedback channel are time-division multiplexed.

35. An information feedback apparatus, the apparatus is applied to a second terminal, the apparatus includes: a sending unit, configured to send N groups of reference signals to a first terminal, N is a positive integer, wherein transmission resources of reference signals between different groups are time-division multiplexed; A receiving unit, configured to receive index information of a target reference signal sent by the first terminal, where the index information is carried in a feedback channel; Wherein, the feedback channel further includes at least one of the following: identification information of the first terminal, identification information of the second terminal.

36. The apparatus according to claim 35, Wherein, The value of N is indicated based on a control channel of the second terminal; or, The value of N is determined based on a preset configuration; or, The value of N is determined based on a base station configuration.

37. The apparatus according to claim 35, Wherein, Each group of reference signals includes M time-domain symbols, and M is a positive integer; wherein, The value of M is indicated based on a control channel of the second terminal; or, The value of M is determined based on a preset configuration; or, The value of M is determined based on a base station configuration.

38. The apparatus according to claim 37, Wherein, The transmission resources of the control channel of the second terminal and the transmission resources of the reference signal are time-division multiplexed.

39. The apparatus according to claim 37, Wherein, The control channel of the second terminal is not transmitted in a beamforming manner.

40. The apparatus according to claim 39, Wherein, The reference signal of the second terminal is transmitted in a beamforming manner.

41. The apparatus according to any one of claims 35 to 40, Wherein, The feedback channel includes K time-domain symbols, and K is a positive integer; wherein, The value of K is indicated based on a control channel of the first terminal; or, The value of K is determined based on a preset configuration; or, The value of K is determined based on a base station configuration.

42. The apparatus according to any one of claims 35 to 40, Wherein, The receiving unit is configured to receive N feedback channels sent by the first terminal, where the feedback channel includes the index information.

43. The apparatus according to any one of claims 35 to 40, Wherein, The apparatus further includes: A determining unit, configured to receive control information of the first terminal, and determine transmission resources for transmitting the feedback channel based on the control information of the first terminal.

44. The apparatus according to any one of claims 35 to 40, Wherein, The apparatus further includes: A determining unit, configured to determine transmission resources for transmitting the feedback channel based on the transmission resources of the reference signal.

45. A computer storage medium, on which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, the method steps described in any one of claims 1 to 12, or the method steps described in any one of claims 13 to 22 are implemented.

46. A terminal, Including: One or more processors; A memory, configured to store data; The processor implements the method steps described in any one of claims 1 to 12, or the method steps described in any one of claims 13 to 22 by running software programs and modules stored in the memory.

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