A data transmission method and device, and computer storage medium

Abstract

The present application discloses a data transmission method and device, and a computer storage medium. The method includes: a first terminal sends a physical side control channel PSCCH and / or a physical side shared channel PSSCH to a second terminal, and the PSCCH or PSSCH includes feedback information and / or measurement information.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and in particular to a data transmission method and device, and a computer storage medium. Background Art

[0002] The Internet of Vehicles 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 by base stations, the Internet of Vehicles system adopts terminal-to-terminal direct communication, so it has higher spectrum efficiency and lower transmission delay.

[0003] In 3GPP Rel-14, vehicle-to-everything (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 sensing + reservation.

[0004] In NR-V2X, it is necessary to support autonomous driving, which puts forward higher requirements for data interaction between vehicles, such as higher throughput, lower latency, higher reliability, larger coverage, more flexible resource allocation, etc. In order to meet the above requirements, multi-antenna transmission technology needs to be introduced in NR-V2X. In multi-antenna transmission technology, how the transmitter selects the optimal beam from multiple candidate beams is determined based on the index value of the optimal beam fed back by the receiver.

[0005] In addition, NR-V2X needs to support various transmission modes, such as unicast, groupcast, and broadcast. In unicast transmission, the receiving end needs to feedback confirmation (ACK) / non-confirmation (NACK) information and channel quality indicator (CQI) information. The transmitting end can adjust the modulation and coding strategy (MCS) and determine whether retransmission is required based on the feedback information from the receiving end.

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

[0007] The embodiments of the present application provide a data transmission method and device, and a computer storage medium.

[0008] The data transmission method provided in the embodiment of the present application includes:

[0009] The first terminal sends a physical sidelink control channel (PSCCH) and / or a physical sidelink shared channel (PSSCH) to the second terminal, where the PSCCH or PSSCH includes feedback information and / or measurement information.

[0010] In the embodiment of the present application, the method further includes:

[0011] Before the first terminal sends the PSCCH and / or PSSCH to the second terminal, the first terminal receives data and / or a measurement signal sent by the second terminal.

[0012] In the embodiment of the present application, the feedback information is feedback information corresponding to the data sent by the second terminal;

[0013] The measurement information is measurement information corresponding to the measurement signal sent by the second terminal.

[0014] In the embodiment of the present application, when the PSCCH includes feedback information and / or measurement information:

[0015] The first terminal sends the feedback information and / or the measurement information to the second terminal through sidelink control information (SCI, SidelinkControlInformation) in the PSCCH, wherein the SCI includes the feedback information and / or the measurement information.

[0016] In the embodiment of the present application, the PSCCH also includes at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information.

[0017] In an embodiment of the present application, the identification information of the first terminal is carried by the SCI in the PSCCH; or, the identification information of the second terminal is carried by the SCI in the PSCCH; or, the group identification information is carried by the SCI in the PSCCH.

[0018] In the embodiment of the present application, the PSCCH further includes at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information, including:

[0019] The scrambling code sequence corresponding to the PSCCH is used to determine at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information.

[0020] In the embodiment of the present application, the PSCCH further includes at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information, including:

[0021] The mask sequence corresponding to the SCI in the PSCCH is used to determine at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information.

[0022] In the embodiment of the present application, the SCI does not include resource scheduling information.

[0023] In an embodiment of the present application, the SCI includes first indication information, where the first indication information is used to indicate that the SCI includes feedback information and / or measurement information, or the first indication information is used to indicate an SCI format.

[0024] In the embodiment of the present application, the method further includes:

[0025] The first terminal performs resource monitoring, determines at least one available resource, and selects a resource for transmitting the PSCCH from the at least one available resource.

[0026] In the embodiment of the present application, the method further includes:

[0027] The first terminal determines, based on the transmission resources corresponding to the data sent by the second terminal, resources for transmitting the PSCCH, or,

[0028] The first terminal determines resources for transmitting the PSCCH based on the transmission resources corresponding to the measurement signal sent by the second terminal.

[0029] In the embodiment of the present application, the method further includes:

[0030] The first terminal determines the resources for transmitting the PSCCH based on second indication information sent by the second terminal, wherein the second indication information is carried in the data sent by the second terminal, or the second indication information is carried in the control information corresponding to the data sent by the second terminal.

[0031] In the embodiment of the present application, when the PSSCH includes feedback information and / or measurement information:

[0032] The first terminal sends the feedback information and / or the measurement information to the second terminal via a media access control (MAC) control element (CE) in a PSSCH, wherein the MAC CE includes the feedback information and / or the measurement information.

[0033] In the embodiment of the present application, when the PSSCH includes feedback information and / or measurement information:

[0034] The feedback information and / or measurement information occupies a first resource subset of the transmission resources used by the PSSCH, wherein the first resource subset is determined according to a first criterion, and the first criterion is pre-configured or network configured.

[0035] In the embodiment of the present application, the first criterion includes:

[0036] The transmission resource of the feedback information and / or measurement information is a transmission resource on a DMRS symbol of the PSSCH, and the transmission resource of the feedback information and / or measurement information cannot occupy the transmission resource of the DMRS of the PSSCH, or,

[0037] The transmission resource of the feedback information and / or measurement information is a transmission resource on a time domain symbol adjacent to the DMRS symbol of the PSSCH.

[0038] In the embodiment of the present application, the method further includes:

[0039] The size of the first resource subset is determined by the number of symbols after the information bits of the feedback information and / or measurement information are channel coded and modulated.

[0040] In the embodiment of the present application, the feedback information and / or measurement information occupies a first resource subset of the transmission resources used by the PSSCH, including:

[0041] The data of the PSSCH on the first resource subset is punctured or replaced by the feedback information and / or measurement information.

[0042] In an embodiment of the present application, the PSSCH also includes at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information.

[0043] In an embodiment of the present application, the identification information of the first terminal is carried by the MAC CE in the PSSCH; or, the identification information of the second terminal is carried by the MAC CE in the PSSCH; or, the group identification information is carried by the MAC CE in the PSSCH.

[0044] In the embodiment of the present application, the PSSCH also includes at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information, including:

[0045] The scrambling code sequence corresponding to the PSSCH is used to determine at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information.

[0046] In the embodiment of the present application, the method further includes:

[0047] The first terminal performs resource monitoring, determines at least one available resource, and selects a resource for transmitting the PSSCH from the at least one available resource.

[0048] In the embodiment of the present application, the method further includes:

[0049] The first terminal determines, based on the transmission resources corresponding to the data sent by the second terminal, resources for transmitting the PSSCH, or,

[0050] The first terminal determines resources for transmitting the PSSCH based on the transmission resources corresponding to the measurement signal sent by the second terminal.

[0051] In the embodiment of the present application, the method further includes:

[0052] The first terminal determines resources for transmitting the PSSCH based on third indication information sent by the second terminal, wherein the third indication information is carried in data sent by the second terminal, or the third indication information is carried in control information corresponding to the data sent by the second terminal.

[0053] In this embodiment of the present application, the feedback information includes at least one of the following:

[0054] Acknowledgement (ACK) / non-acknowledgement (NACK) information, beam index information, channel quality indication (CQI, Channel Quality Indication) information, precoding matrix indication (PMI, Precoding Matrix Indication) information, rank indication (RI, Rank Indication) information, power indication information, channel state indication (CSI, Channel State Indication) information.

[0055] In the embodiment of the present application, when the feedback information includes the ACK / NACK information, the feedback information also includes hybrid automatic repeat request HARQ process information.

[0056] The data transmission device provided in the embodiment of the present application includes:

[0057] The sending unit is used to send PSCCH and / or PSSCH to the second terminal, where the PSCCH or PSSCH includes feedback information and / or measurement information.

[0058] In the embodiment of the present application, the device further includes:

[0059] A receiving unit is configured to receive data and / or a measurement signal sent by the second terminal.

[0060] In the embodiment of the present application, the feedback information is feedback information corresponding to the data sent by the second terminal;

[0061] The measurement information is measurement information corresponding to the measurement signal sent by the second terminal.

[0062] In the embodiment of the present application, when the PSCCH includes feedback information and / or measurement information:

[0063] The sending unit is used to send the feedback information and / or the measurement information to the second terminal through the SCI in the PSCCH, wherein the SCI includes the feedback information and / or the measurement information.

[0064] In the embodiment of the present application, the PSCCH also includes at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information.

[0065] In an embodiment of the present application, the identification information of the first terminal is carried by the SCI in the PSCCH; or, the identification information of the second terminal is carried by the SCI in the PSCCH; or, the group identification information is carried by the SCI in the PSCCH.

[0066] In the embodiment of the present application, the PSCCH further includes at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information, including:

[0067] The scrambling code sequence corresponding to the PSCCH is used to determine at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information.

[0068] In the embodiment of the present application, the PSCCH further includes at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information, including:

[0069] The mask sequence corresponding to the SCI in the PSCCH is used to determine at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information.

[0070] In the embodiment of the present application, the SCI does not include resource scheduling information.

[0071] In an embodiment of the present application, the SCI includes first indication information, where the first indication information is used to indicate that the SCI includes feedback information and / or measurement information, or the first indication information is used to indicate an SCI format.

[0072] In the embodiment of the present application, the device further includes:

[0073] The resource monitoring unit is used to perform resource monitoring, determine at least one available resource, and select a resource for transmitting the PSCCH from the at least one available resource.

[0074] In the embodiment of the present application, the device further includes:

[0075] A resource determination unit is used to determine the resources used to transmit the PSCCH based on the transmission resources corresponding to the data sent by the second terminal, or to determine the resources used to transmit the PSCCH based on the transmission resources corresponding to the measurement signal sent by the second terminal.

[0076] In the embodiment of the present application, the device further includes:

[0077] A resource determination unit is used to determine the resources used to transmit the PSCCH based on second indication information sent by the second terminal, wherein the second indication information is carried in the data sent by the second terminal, or the second indication information is carried in the control information corresponding to the data sent by the second terminal.

[0078] In the embodiment of the present application, when the PSSCH includes feedback information and / or measurement information:

[0079] The sending unit is used to send the feedback information and / or the measurement information to the second terminal through the MAC CE in the PSSCH, wherein the MAC CE includes the feedback information and / or the measurement information.

[0080] In the embodiment of the present application, when the PSSCH includes feedback information and / or measurement information:

[0081] The feedback information and / or measurement information occupies a first resource subset of the transmission resources used by the PSSCH, wherein the first resource subset is determined according to a first criterion, and the first criterion is pre-configured or network configured.

[0082] In the embodiment of the present application, the first criterion includes:

[0083] The transmission resource of the feedback information and / or measurement information is a transmission resource on a DMRS symbol of the PSSCH, and the transmission resource of the feedback information and / or measurement information cannot occupy the transmission resource of the DMRS of the PSSCH, or,

[0084] The transmission resource of the feedback information and / or measurement information is a transmission resource on a time domain symbol adjacent to the DMRS symbol of the PSSCH.

[0085] In the embodiment of the present application, the size of the first resource subset is determined by the number of symbols after the information bits of the feedback information and / or measurement information are channel coded and modulated.

[0086] In the embodiment of the present application, the feedback information and / or measurement information occupies a first resource subset of the transmission resources used by the PSSCH, including:

[0087] The data of the PSSCH on the first resource subset is punctured or replaced by the feedback information and / or measurement information.

[0088] In an embodiment of the present application, the PSSCH also includes at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information.

[0089] In an embodiment of the present application, the identification information of the first terminal is carried by the MAC CE in the PSSCH; or, the identification information of the second terminal is carried by the MAC CE in the PSSCH; or, the group identification information is carried by the MAC CE in the PSSCH.

[0090] In the embodiment of the present application, the PSSCH also includes at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information, including:

[0091] The scrambling code sequence corresponding to the PSSCH is used to determine at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information.

[0092] In the embodiment of the present application, the device further includes:

[0093] The resource monitoring unit is used to perform resource monitoring, determine at least one available resource, and select a resource for transmitting the PSSCH from the at least one available resource.

[0094] In the embodiment of the present application, the device further includes:

[0095] A resource determination unit is used to determine the resources used to transmit the PSSCH based on the transmission resources corresponding to the data sent by the second terminal, or to determine the resources used to transmit the PSSCH based on the transmission resources corresponding to the measurement signal sent by the second terminal.

[0096] In the embodiment of the present application, the device further includes:

[0097] A resource determination unit is used to determine the resources used to transmit the PSSCH based on the third indication information sent by the second terminal, wherein the third indication information is carried in the data sent by the second terminal, or the third indication information is carried in the control information corresponding to the data sent by the second terminal.

[0098] In this embodiment of the present application, the feedback information includes at least one of the following:

[0099] ACK / NACK information, beam index information, CQI information, PMI information, RI information, power indication information, CSI information.

[0100] In the embodiment of the present application, when the feedback information includes the ACK / NACK information, the feedback information also includes (HARQ, Hybrid Automatic Repeat reQuest) process information.

[0101] The computer storage medium provided in the embodiment of the present application stores computer executable instructions thereon, and the computer executable instructions implement the above-mentioned data transmission method when executed by a processor.

[0102] In the technical solution of the embodiment of the present application, the first terminal sends PSCCH and / or PSSCH to the second terminal, and the PSCCH or PSSCH includes feedback information and / or measurement information. Using the technical solution of the embodiment of the present application, the feedback information and / or measurement information is carried in PSCCH or PSSCH for transmission, thereby avoiding the design of a new feedback channel. In addition, the feedback terminal (i.e., the first terminal) can determine the transmission resources of the feedback channel (i.e., PSCCH or PSSCH) by using a resource listening method or determine the transmission resources of the feedback channel (i.e., PSCCH or PSSCH) according to the transmission resources of the data or measurement signal sent by the second terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0103] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0104] Figure 1 This is a schematic diagram of the scenario of Mode 3 in the Internet of Vehicles;

[0105] Figure 2 A schematic diagram of a scenario of Mode 4 in the Internet of Vehicles;

[0106] Figure 3 A schematic diagram of a data transmission method according to an embodiment of the present application;

[0107] Figure 4 A schematic diagram of the structure of a data transmission device according to an embodiment of the present application;

[0108] Figure 5 A schematic diagram of the structural composition of a computer device according to an embodiment of the present application. DETAILED DESCRIPTION

[0109] In order to enable a more detailed understanding of the features and technical contents of the embodiments of the present application, the implementation of the embodiments of the present application is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present application.

[0110] To facilitate understanding of the technical solutions of the embodiments of the present application, Mode 3 and Mode 4 in the Internet of Vehicles are explained below respectively.

[0111] Mode 3: If Figure 1 As shown in Figure 1, the transmission resources of the vehicle terminal are allocated by the base station (such as the evolved NodeB (eNB) in LTE). Specifically, the base station sends a control message indicating the grant resources to the vehicle terminal through the downlink (DL). Then, the 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 a single transmission to the vehicle terminal, or it can allocate resources for semi-static transmission to the terminal.

[0112] Mode 4: If Figure 2 As shown, the vehicle terminal adopts a listening + reserved transmission mode. The vehicle terminal obtains a set of available transmission resources in the resource pool by listening, and randomly selects a resource from the transmission resource set to transmit data. Since the services in the Internet of Vehicles system have periodic characteristics, the vehicle terminal usually adopts a semi-static transmission mode, that is, after the vehicle terminal selects a transmission resource, it will continue to use the resource in multiple transmission cycles, thereby reducing the probability of resource reselection and resource conflict. The vehicle terminal will carry the information of reserving the next transmission resource in the control information of this transmission, so that other terminals can determine whether this resource is reserved and used by the vehicle terminal by detecting the control information of the vehicle terminal, so as to achieve the purpose of reducing resource conflicts.

[0113] It should be noted that in LTE-V2X, mode 3 is used to indicate that the transmission resources of the vehicle terminal are allocated by the base station, and mode 4 is used to indicate that the transmission resources of the vehicle terminal are selected autonomously by the terminal. In NR-V2X, new transmission modes can be defined, and this application does not limit this.

[0114] Multi-antenna transmission technology needs to be introduced in NR-V2X. Multi-antenna can bring the following benefits:

[0115] 1) Higher transmission rate: By using multiple antennas for multiplexing transmission, multiple data streams can be transmitted on the same time-frequency resources, thereby improving the transmission rate.

[0116] 2) Wider coverage and higher reliability: Beamforming technology can be used to concentrate energy into a very narrow beam, thereby improving the signal to interference plus noise ratio (SINR) at the receiving end, thereby increasing the probability of successful reception at the receiving end or increasing the transmission distance.

[0117] Here, beamforming can improve coverage and reliability. How the transmitter selects the best beam from multiple candidate beams is achieved through the following process: the transmitter needs to perform beam scanning and use different beams for transmission; the receiver receives the data transmitted by each beam respectively, so as to select a beam with the best transmission quality as the optimal beam, and feed back the index value of the beam to the transmitter; in subsequent data transmission, the transmitter can use the optimal beam for data transmission.

[0118] In the above scheme, the receiving end needs to feed back the index value of the beam to the transmitting end. In addition, the receiving end also needs to feed back other types of information to the transmitting end, such as ACK / NACK information, CQI information, etc. Different feedback information can be used by the transmitting end to make different transmission strategies. The technical solution of the embodiment of the present application designs a feedback channel in NR-V2X to transmit feedback information.

[0119] Figure 3 Schematic diagram of the data transmission method according to the embodiment of the present application. Figure 3 As shown, the data transmission method includes:

[0120] Step 301: The first terminal receives data and / or measurement signals sent by the second terminal.

[0121] In the embodiment of the present application, the types of the first terminal and the second terminal are not limited, and they may be vehicle-mounted terminals, mobile phones, notebooks and other devices.

[0122] In the embodiment of the present application, the first terminal and the second terminal are located in the Internet of Vehicles, and the first terminal and the second terminal communicate with each other using an end-to-end sidelink. Based on this, the first terminal receives data and / or measurement signals sent by the second terminal through the sidelink.

[0123] In the embodiment of the present application, the measurement signal includes at least one of the following:

[0124] Demodulation Reference Signal (DMRS), Channel State Indicator Reference Signal (CSI-RS), Sounding Reference Signal (SRS), Phase Tracking Reference Signal (PT-RS).

[0125] Step 302: The first terminal sends PSCCH and / or PSSCH to the second terminal, wherein the PSCCH or PSSCH includes feedback information and / or measurement information, or the first terminal sends a first side channel to the second terminal, wherein the first side channel includes feedback information and / or measurement information.

[0126] In the embodiment of the present application, the feedback information is feedback information corresponding to the data sent by the second terminal; and the measurement information is measurement information corresponding to the measurement signal sent by the second terminal.

[0127] In the embodiment of the present application, the feedback information and / or measurement information sent by the first terminal to the second terminal can be implemented in the following three ways:

[0128] Mode 1: The first terminal carries the feedback information and / or measurement information in the PSCCH and transmits it to the second terminal.

[0129] Mode 2: The first terminal carries the feedback information and / or measurement information in the PSSCH and transmits it to the second terminal.

[0130] Method three: The first terminal transmits the feedback information and / or measurement information carried in the first side channel to the second terminal. Furthermore, the first side channel is a side channel different from PSCCH and PSSCH, and the channel is used to transmit feedback information. Furthermore, the first side channel is called a physical side feedback channel. Optionally, the first side channel occupies the last K symbols in a subframe, where 1<=K<14. Optionally, the first side channel and the data and / or side signal sent by the second terminal and received by the first terminal are located in the same subframe or time slot. For example, the data sent by the second terminal to the first terminal occupies the first 8 time domain symbols of a subframe, the first terminal receives the data, and sends feedback information of the data in the first side channel, and the first side channel occupies the last 4 time domain symbols of the subframe.

[0131] In the above solution, the feedback information includes at least one of the following:

[0132] ACK / NACK information, beam index information, CQI information, PMI information, RI information, power indication information, CSI information.

[0133] Here, the power indication information is used to indicate whether to increase power or reduce power; or, the power indication information is power head room information (Power Head Room), wherein the power head room information can also be used to indicate whether to increase power or reduce power; or the power indication information is the transmission power information of the first terminal transmitting PSCCH or PSSCH.

[0134] Here, ACK / NACK information refers to: ACK information or NACK information.

[0135] Optionally, in the above solution, the measurement information includes at least one of the following:

[0136] Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), Received Signal Strength Indicator (RSSI), interference indication information, and path loss information.

[0137] Optionally, the RSRP in the above solution is the sidelink RSRP, the RSRQ is the sidelink RSRQ, the RSSI is the sidelink RSSI, the interference indication information is used to indicate the interference of the sidelink, and the path loss information indicates the path loss of the sidelink between the first terminal and the second terminal. The technical solution of the embodiment of the present application is described in detail below in conjunction with specific application examples.

[0138] Application example 1:

[0139] The first terminal carries the feedback information and / or the measurement information in the PSCCH and transmits it to the second terminal, that is, the PSCCH includes the feedback information and / or the measurement information.

[0140] Specifically, the first terminal sends the feedback information and / or the measurement information to the second terminal through the SCI in the PSCCH, wherein the SCI includes the feedback information and / or the measurement information.

[0141] Here, a new SCI format is designed to carry the feedback information. Further, when the feedback information includes the ACK / NACK information, the feedback information also includes HARQ process information.

[0142] In one embodiment, the PSCCH also includes at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information. Further, the identification information of the first terminal is carried by the SCI in the PSCCH; or, the identification information of the second terminal is carried by the SCI in the PSCCH; or, the group identification information is carried by the SCI in the PSCCH. For example, the SCI includes a first information field, and the first information field is used to indicate the identification information of the first terminal, and / or the identification information of the second terminal, and / or the group identification information. Among them, the group identification information is the identification information used by the first terminal and the second terminal to distinguish different groups or different service types when performing group broadcast communication.

[0143] In one embodiment, after the information bits of the SCI carried in the PSCCH are channel-coded, it is necessary to perform a scrambling operation on the coded sequence, and the scrambling code sequence can be used to determine at least one of the following: the identification information of the first terminal, the identification information of the second terminal, and the group identification information. For example, the PSCCH sent by the first terminal carries SCI, and the sequence of the information bits of the SCI after channel coding and rate matching is a first sequence. The first terminal performs a scrambling operation on the first sequence, and the scrambling code sequence of the scrambling operation is a first scrambling code sequence determined according to the identification information of the first terminal, and / or the identification information of the second terminal, and / or the group identification information. When the second terminal receives the PSCCH sent by the first terminal and uses the first scrambling code sequence to perform descrambling processing on the SCI carried therein, when the decoding is successful, the identification information of the first terminal, and / or the identification information of the second terminal, and / or the group identification information can be determined according to the first scrambling code sequence.

[0144] In one embodiment, after the information bits of the SCI carried in the PSCCH are added with a cyclic redundancy check code (CRC), it is necessary to perform a scrambling operation on the sequence, and the scrambling sequence or mask sequence used in the scrambling process can be used to determine at least one of the following: the identification information of the first terminal, the identification information of the second terminal, and the group identification information. For example, the PSCCH sent by the first terminal carries SCI, and the sequence of the information bits of the SCI after the CRC process is a second sequence. The first terminal performs a scrambling operation on the second sequence, and the scrambling sequence or mask sequence of the scrambling operation is a second scrambling sequence determined according to the identification information of the first terminal, and / or the identification information of the second terminal, and / or the group identification information. When the second terminal receives the PSCCH sent by the first terminal and uses the second scrambling sequence to perform a descrambling process on the SCI carried therein, when the decoding is successful, the identification information of the first terminal, and / or the identification information of the second terminal, and / or the group identification information can be determined according to the second scrambling sequence.

[0145] In one embodiment, the SCI carried in the PSCCH includes the feedback information and / or the measurement information, and the PSSCH scheduled by the SCI includes at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information.

[0146] It should be understood that in the above embodiments, the method of indicating the identification information of the first terminal, and / or the identification information of the second terminal, and / or the group identification information through the information field in the SCI, and the method of determining the identification information of the first terminal, and / or the identification information of the second terminal, and / or the group identification information through the corresponding scrambling sequence or mask sequence of the PSCCH, and the method of including the identification information of the first terminal, and / or the identification information of the second terminal, and / or the group identification information in the PSSCH scheduled by the SCI, can be used in combination. This application does not limit this. For example, the first information field carried in the SCI is used to indicate the identification information of the first terminal, and the identification information of the second terminal is determined by the scrambling sequence corresponding to the PSCCH. For another example, the first information field carried in the SCI is used to indicate the identification information of the first terminal, and the PSSCH scheduled by the SCI includes the identification information of the second terminal.

[0147] In the above solution, the SCI does not include resource scheduling information. Here, the resource scheduling information is used to indicate the scheduled time domain resources and / or frequency domain resources.

[0148] In one implementation, the SCI includes first indication information, where the first indication information is used to indicate that the SCI includes feedback information and / or measurement information, or the first indication information is used to indicate an SCI format.

[0149] For example, the SCI includes one bit. When the bit value is 1, it indicates that the SCI is used to transmit feedback information and / or measurement information. When the bit value is 0, it indicates that the SCI is used to schedule PSSCH resources.

[0150] For another example, the SCI includes a bit. When the bit value is 1, it indicates that the SCI is a SCI of the first format. When the bit value is 0, it indicates that the SCI is a SCI of the second format. The first format SCI is used to transmit feedback information and / or measurement information, and the second format SCI is used to transmit scheduling information of PSSCH.

[0151] In addition, the embodiment of the present application also proposes how to determine the resources of the PSCCH used to transmit feedback information, specifically including the following three methods:

[0152] Method 1: The first terminal performs resource monitoring, determines at least one available resource, and selects a resource for transmitting the PSCCH from the at least one available resource.

[0153] Here, the first terminal selects the resources of the PSCCH by monitoring. Specifically, the first terminal determines an available resource set by monitoring, and selects resources for transmitting the PSCCH from the available resource set.

[0154] Method 2: The first terminal determines the resources used to transmit the PSCCH based on the transmission resources corresponding to the data sent by the second terminal, or the first terminal determines the resources used to transmit the PSCCH based on the transmission resources corresponding to the measurement signal sent by the second terminal.

[0155] For example: the frequency domain transmission resource of the PSCCH can be determined by the index of the lowest physical resource block (PRB) where the data is located or the index of the lowest subband, or by the index of the lowest PRB where the measurement signal is located or the index of the lowest subband. For example, the frequency domain starting position of the PSCCH is subband A1, and the index of the lowest subband of the data is B1, where A1=B1+K1, K1 is a pre-configured or network-configured value, that is, the frequency domain position of the PSCCH can be determined by the frequency domain position of the data.

[0156] For example: the time domain transmission resource of the PSCCH may be determined by the subframe where the data is located, or by the subframe where the measurement signal is located. For example, the time domain position of the PSCCH is subframe C1, and the subframe where the data is located is D1, wherein C1=D1+P1, and P1 is a pre-configured or network-configured value, that is, the time domain position of the PSCCH may be determined by the time domain position of the data.

[0157] Method 3:

[0158] The first terminal determines the resources for transmitting the PSCCH based on second indication information sent by the second terminal, wherein the second indication information is carried in the data sent by the second terminal, or the second indication information is carried in the control information corresponding to the data sent by the second terminal.

[0159] For example, the second terminal sends data to the first terminal, and the control information corresponding to the data carries second indication information, and the second indication information is used to indicate the resource used by the feedback information of the data. The first terminal receives the control information and data sent by the second terminal, and determines the resource of the feedback information corresponding to the data according to the second indication information carried in the control information, and sends a PSCCH on the resource, and the PSCCH carries the feedback information.

[0160] Application Example 2:

[0161] The first terminal carries the feedback information and / or the measurement information in the PSSCH and transmits it to the second terminal, that is, the PSSCH includes the feedback information and / or the measurement information.

[0162] In one embodiment, the first terminal sends the feedback information and / or the measurement information to the second terminal via a MAC CE in a PSSCH, wherein the MAC CE includes the feedback information and / or the measurement information.

[0163] Here, the feedback information and / or the measurement information is carried in the PSSCH in the form of MAC CE. When the first terminal sends the PSSCH, it also sends the feedback information and / or the measurement information.

[0164] In one embodiment, the feedback information and / or measurement information is carried in the PSSCH, including that the feedback information and / or measurement information is carried in the PSSCH by puncturing part of the resources of the PSSCH. Specifically, the data of the PSSCH is mapped to the transmission resources of the PSSCH, the feedback information and / or measurement information selects a first resource subset from the transmission resources used by the PSSCH, and punctures the data of the PSSCH corresponding to the first resource subset, that is, the feedback information and / or measurement information replaces the data of the PSSCH on the first resource subset. Further, the first resource subset is determined according to a first criterion, and the first criterion includes: the transmission resources of the feedback information and / or measurement information are the transmission resources on the DMRS symbol of the PSSCH, and the transmission resources of the feedback information and / or measurement information cannot occupy the transmission resources of the DMRS of the PSSCH; or, the first criterion includes: the transmission resources of the feedback information and / or measurement information are the transmission resources on the time domain symbols adjacent to the DMRS symbols of the PSSCH. Further, the transmission resource of the feedback information and / or measurement information is a resource on a DMRS symbol of the PSSCH or a time domain symbol adjacent to the DMRS symbol, starting from the lowest or highest frequency domain position. The first criterion is pre-configured or network configured.

[0165] Furthermore, the size of the first resource subset is determined by the number of symbols after the information bits of the feedback information and / or measurement information are channel coded and modulated.

[0166] For example, PSSCH occupies one subframe, and the frequency domain occupies 8 PRBs. The 3rd, 6th, 9th, and 12th time domain symbols in the PSSCH subframe are DMRS symbols. On each DMRS symbol, all resource units are used to transmit DMRS sequences. The first criterion is that the feedback information occupies the resources on the first time domain symbol after the first DMRS symbol, and is the resource starting from the lowest frequency domain position of the PSSCH frequency domain resource. That is, the feedback information occupies the resources starting from the lowest frequency domain position on the 4th time domain symbol of the subframe where the PSSCH is located. If the feedback information needs to occupy 20 resource units, then on the 4th time domain symbol, the PSSCH data on the 20 resource units starting from the lowest position of the frequency domain resources occupied by the PSSCH are replaced by the feedback information.

[0167] In one embodiment, the feedback information and / or measurement information is carried in the PSSCH, including that the feedback information and / or measurement information is carried in the PSSCH by way of rate matching. Specifically, the resource size occupied by the feedback information and / or measurement information is first determined. Then, the resources occupied by the feedback information and / or measurement information in the transmission resources of the PSSCH are determined according to the first criterion. When calculating the resource units available for the data of the PSSCH, it is necessary to remove the resources reserved for the feedback information and / or measurement information, and when mapping the data of the PSSCH to the transmission resources, the data of the PSSCH does not occupy the resources used by the feedback information and / or measurement information. The feedback information and / or measurement information is mapped to the resources determined in the PSSCH according to the first criterion, that is, the feedback information and / or measurement information will not puncture the data of the PSSCH.

[0168] In one embodiment, the feedback information and / or measurement information and the PSSCH use different modulation schemes or coding schemes.

[0169] In one embodiment, the feedback information and / or measurement information and the PSSCH use different power spectrum densities, or the feedback information and / or measurement information and the PSSCH have different power factors.

[0170] In one embodiment, the PSSCH further includes at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information. Further, the identification information of the first terminal is carried by a MAC CE in the PSSCH; or the identification information of the second terminal is carried by a MAC CE in the PSSCH; or the group identification information is carried by a MAC CE in the PSSCH.

[0171] In one embodiment, after the data of the PSSCH is channel-coded, it is necessary to perform a scrambling operation on the coded sequence, and the scrambling code sequence can be used to determine at least one of the following: the identification information of the first terminal, the identification information of the second terminal, and the group identification information. For example, the sequence of the PSSCH data sent by the first terminal after channel coding and rate matching is a first sequence, and the first terminal performs a scrambling operation on the first sequence. The scrambling code sequence of the scrambling operation is a first scrambling code sequence determined according to the identification information of the first terminal, and / or the identification information of the second terminal, and / or the group identification information. When the second terminal receives the PSSCH sent by the first terminal and uses the first scrambling code sequence to perform descrambling processing on the PSSCH data, when the decoding is successful, the identification information of the first terminal, and / or the identification information of the second terminal, and / or the group identification information can be determined according to the first scrambling code sequence.

[0172] In one embodiment, the first terminal sends fifth indication information to the second terminal, and the fifth indication information is used to indicate at least one of the following information: the type of the feedback information; the number of bits corresponding to the feedback information type; the type of the measurement information; the number of bits corresponding to the measurement information type. Further, the fifth indication information is included in the PSSCH, or the fifth indication information is included in the PSCCH corresponding to the PSSCH.

[0173] In one embodiment, the first terminal obtains sixth indication information, and the sixth indication information is used to indicate at least one of the following information: the type of feedback information sent by the first terminal; the number of bits corresponding to the type of feedback information sent by the first terminal; the type of measurement information sent by the first terminal; the number of bits corresponding to the type of measurement information sent by the first terminal. Further, the first terminal can obtain the sixth indication information in the following manner: 1) the first terminal receives a first side transmission channel sent by the second terminal, and the sixth indication information is included in the first side transmission channel. Or, 2) the first terminal receives configuration information sent by the network, and the configuration information includes the sixth indication information.

[0174] It should be understood that in the above embodiments, the method of indicating the identification information of the first terminal, and / or the identification information of the second terminal, and / or the group identification information through the MAC CE in the PSSCH, and the method of determining the identification information of the first terminal, and / or the identification information of the second terminal, and / or the group identification information through the corresponding scrambling sequence of the PSSCH, can be used in combination. This application does not limit this. For example, the MAC CE in the PSSCH carries the identification information of the first terminal, and the identification information of the second terminal is determined by the scrambling sequence corresponding to the PSSCH.

[0175] It should be understood that the identification information of the first terminal, and / or the identification information of the second terminal, and / or the group identification information can be carried in the PSSCH in a manner similar to the feedback information and / or measurement information in the above embodiments through puncturing or rate matching. The method used is the same as that in the above embodiments and will not be repeated here.

[0176] In the embodiment of the present application, if the first terminal has no data to be transmitted, the first terminal sends a PSSCH without data, and the PSSCH carries feedback information and / or measurement information. Further, when the feedback information includes the ACK / NACK information, the feedback information also includes HARQ process information.

[0177] In addition, the embodiment of the present application also proposes how to determine the resources of the PSSCH used to transmit feedback information and / or measurement information, specifically including the following three methods:

[0178] Method 1: The first terminal performs resource monitoring, determines at least one available resource, and selects a resource for transmitting the PSSCH from the at least one available resource.

[0179] Here, the first terminal selects the resources of the PSSCH by listening. Specifically, the first terminal determines an available resource set by listening, and selects resources for transmitting the PSSCH from the available resource set.

[0180] Method 2: The first terminal determines the resources used to transmit the PSSCH based on the transmission resources corresponding to the data sent by the second terminal, or the first terminal determines the resources used to transmit the PSSCH based on the transmission resources corresponding to the measurement signal sent by the second terminal.

[0181] For example: the frequency domain transmission resource of PSSCH can be determined by the index of the lowest PRB or the lowest subband where the data is located, or by the index of the lowest PRB or the lowest subband where the measurement signal is located. For example, the frequency domain starting position of the PSSCH is subband A2, and the index of the lowest subband of the data is B2, where A2=B2+K2, K2 is a pre-configured or network-configured value, that is, the frequency domain position of the PSSCH can be determined by the frequency domain position of the data.

[0182] For example, the time domain transmission resource of the PSSCH may be determined by the subframe where the data is located, or by the subframe where the measurement signal is located. For example, the time domain position of the PSSCH is subframe C2, and the subframe where the data is located is D2, where C2=D2+P2, and P2 is a pre-configured or network-configured value, that is, the time domain position of the PSSCH may be determined by the time domain position of the data.

[0183] Method 3:

[0184] The first terminal determines resources for transmitting the PSSCH based on third indication information sent by the second terminal, wherein the third indication information is carried in data sent by the second terminal; or the third indication information is carried in control information corresponding to the data sent by the second terminal.

[0185] For example: the second terminal sends data to the first terminal, and the control information corresponding to the data carries third indication information, and the third indication information is used to indicate the resource used by the feedback information of the data. The first terminal receives the control information and data sent by the second terminal, and determines the resource of the feedback information corresponding to the data according to the third indication information carried in the control information, and sends a PSSCH on the resource, and the PSSCH carries the feedback information.

[0186] Application Example 3:

[0187] The first terminal transmits feedback information and / or measurement information in a first sidelink channel to the second terminal, wherein the first sidelink channel is not a PSCCH or a PSSCH, and the channel is only used to transmit feedback information and / or measurement information.

[0188] In one embodiment, the first side channel is a sequence, and the sequence is used to carry the feedback information and / or side information. For example, different sequences are used to carry ACK or NACK information, the first sequence is used to indicate the sending of ACK information, and the second sequence is used to indicate the sending of NACK information, and the first terminal determines the transmission sequence according to the information to be fed back (ACK or NACK).

[0189] In addition, the embodiment of the present application further proposes how to determine the resources of the first side channel used to transmit feedback information and / or measurement information, specifically including the following three methods:

[0190] Method 1: The first terminal performs resource monitoring, determines at least one available resource, and selects a resource for transmitting the first side channel from the at least one available resource.

[0191] Here, the first terminal selects the resources of the first side channel by listening. Specifically, the first terminal determines an available resource set by listening, and selects the resources for transmitting the first side channel from the available resource set.

[0192] Method 2: The first terminal determines the resources used to transmit the first side channel based on the transmission resources corresponding to the data sent by the second terminal, or the first terminal determines the resources used to transmit the first side channel based on the transmission resources corresponding to the measurement signal sent by the second terminal.

[0193] For example: the frequency domain transmission resource of the first side channel can be determined by the index of the lowest PRB or the lowest subband where the data is located, or by the index of the lowest PRB or the lowest subband where the measurement signal is located. For example, the frequency domain starting position of the first side channel is subband A3, and the index of the lowest subband of the data is B3, where A3=B3+K3, K3 is a pre-configured or network-configured value, that is, the frequency domain position of the first side channel can be determined by the frequency domain position of the data.

[0194] For example: the time domain transmission resource of the first side channel can be determined by the subframe where the data is located, or by the subframe where the measurement signal is located. For example, the time domain position of the first side channel is subframe C3, and the subframe where the data is located is D3, where C3=D3+P3, and P3 is a pre-configured or network-configured value, that is, the time domain position of the first side channel can be determined by the time domain position of the data.

[0195] For example: the first side channel is a sequence, occupying a time domain symbol, and the transmission resources used by the sequence can be determined by the subframe where the data is located. For example, the sequence uses the last time domain symbol of the subframe where the data is located, the starting position (or ending position) of the frequency domain resources of the sequence is the same as the starting position (or ending position) of the frequency domain resources of the data, and the size of the frequency domain resources occupied by the sequence can be pre-configured, or network configured, or determined according to the size of the frequency domain resources of the data.

[0196] Method 3:

[0197] The first terminal determines resources for transmitting the first side channel based on fourth indication information sent by the second terminal, wherein the fourth indication information is carried in data sent by the second terminal; or the fourth indication information is carried in control information corresponding to the data sent by the second terminal.

[0198] For example, the second terminal sends data to the first terminal, and the control information corresponding to the data carries fourth indication information, and the fourth indication information is used to indicate the resource used by the feedback information of the data. The first terminal receives the control information and data sent by the second terminal, and determines the resource of the feedback information corresponding to the data according to the fourth indication information carried in the control information, and sends the first side channel on the resource, and the first side channel carries the feedback information.

[0199] Figure 4 Schematic diagram of the structure of the data transmission device according to the embodiment of the present application. Figure 4 As shown, the data transmission device includes:

[0200] The sending unit 402 is configured to send a PSCCH and / or a PSSCH to the second terminal, where the PSCCH or the PSSCH includes feedback information and / or measurement information.

[0201] The device also includes:

[0202] The receiving unit 401 is configured to receive data and / or a measurement signal sent by the second terminal.

[0203] In the above solution, the measurement signal includes at least one of the following:

[0204] DMRS, CSI-RS, SRS, PT-RS.

[0205] In the above solution, the feedback information is feedback information corresponding to the data sent by the second terminal; and the measurement information is measurement information corresponding to the measurement signal sent by the second terminal.

[0206] In one embodiment, when the PSCCH includes feedback information and / or measurement information: the sending unit 402 is used to send the feedback information and / or the measurement information to the second terminal via the SCI in the PSCCH, wherein the SCI includes the feedback information and / or the measurement information.

[0207] In one embodiment, the PSCCH further includes at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information. Further, the identification information of the first terminal is carried by the SCI in the PSCCH; or, the identification information of the second terminal is carried by the SCI in the PSCCH; or, the group identification information is carried by the SCI in the PSCCH.

[0208] In one implementation, the PSCCH further includes at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information, including:

[0209] The scrambling code sequence corresponding to the PSCCH is used to determine at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information.

[0210] In one implementation, the PSCCH further includes at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information, including:

[0211] The mask sequence corresponding to the SCI in the PSCCH is used to determine at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information.

[0212] In one implementation, the SCI does not include resource scheduling information.

[0213] In one implementation, the SCI includes first indication information, where the first indication information is used to indicate that the SCI includes feedback information and / or measurement information, or the first indication information is used to indicate an SCI format.

[0214] In one implementation, the sending unit 402 is further configured to send fifth indication information to the second terminal, where the fifth indication information is used to indicate at least one of the following information:

[0215] The type of the feedback information;

[0216] The number of bits corresponding to the feedback information type;

[0217] The type of the measurement information;

[0218] The number of bits corresponding to the measurement information type.

[0219] In one implementation, the fifth indication information is included in the PSSCH, or the fifth indication information is included in a PSCCH corresponding to the PSSCH.

[0220] In one embodiment, the device further comprises:

[0221] The receiving unit 401 is configured to obtain sixth indication information, where the sixth indication information is used to indicate at least one of the following information:

[0222] type of feedback information sent by the first terminal;

[0223] The number of bits corresponding to the feedback information type sent by the first terminal;

[0224] type of measurement information sent by the first terminal;

[0225] The number of bits corresponding to the measurement information type sent by the first terminal.

[0226] In one implementation, the receiving unit 401 is configured to receive a first sideline transmission channel sent by the second terminal, and the sixth indication information is included in the first sideline transmission channel.

[0227] In one implementation, the receiving unit 401 is configured to receive configuration information sent by a network, where the configuration information includes the sixth indication information.

[0228] In one embodiment, the device further comprises:

[0229] The resource monitoring unit 403 is used to perform resource monitoring, determine at least one available resource, and select a resource for transmitting the PSCCH from the at least one available resource.

[0230] In one embodiment, the device further comprises:

[0231] The resource determination unit 404 is used to determine the resources used to transmit the PSCCH based on the transmission resources corresponding to the data sent by the second terminal, or to determine the resources used to transmit the PSCCH based on the transmission resources corresponding to the measurement signal sent by the second terminal.

[0232] In one embodiment, the device further comprises:

[0233] The resource determination unit 404 is used to determine the resources used to transmit the PSCCH based on the second indication information sent by the second terminal, wherein the second indication information is carried in the data sent by the second terminal, or the second indication information is carried in the control information corresponding to the data sent by the second terminal.

[0234] In one embodiment, when the PSSCH includes feedback information and / or measurement information: the sending unit 402 is used to send the feedback information and / or the measurement information to the second terminal via a MAC CE in the PSSCH, wherein the MAC CE includes the feedback information and / or the measurement information.

[0235] In one implementation, when the PSSCH includes feedback information and / or measurement information:

[0236] The feedback information and / or measurement information occupies a first resource subset of the transmission resources used by the PSSCH, wherein the first resource subset is determined according to a first criterion, and the first criterion is pre-configured or network configured.

[0237] In one embodiment, the first criterion includes:

[0238] The transmission resource of the feedback information and / or measurement information is a transmission resource on a DMRS symbol of the PSSCH, and the transmission resource of the feedback information and / or measurement information cannot occupy the transmission resource of the DMRS of the PSSCH, or,

[0239] The transmission resource of the feedback information and / or measurement information is a transmission resource on a time domain symbol adjacent to the DMRS symbol of the PSSCH.

[0240] In one embodiment, the size of the first resource subset is determined by the number of symbols after information bits of the feedback information and / or measurement information are channel coded and modulated.

[0241] In one embodiment, the feedback information and / or measurement information occupies a first resource subset of the transmission resources used by the PSSCH, including:

[0242] The data of the PSSCH on the first resource subset is punctured or replaced by the feedback information and / or measurement information.

[0243] In one embodiment, when the PSSCH includes feedback information and / or measurement information: the feedback information and / or measurement information is carried in the PSSCH by way of rate matching.

[0244] In one embodiment, the PSSCH further includes at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information. Further, the identification information of the first terminal is carried by a MAC CE in the PSSCH; or, the identification information of the second terminal is carried by a MAC CE in the PSSCH; or, the group identification information is carried by a MAC CE in the PSSCH.

[0245] In one embodiment, the PSSCH further includes at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information, including:

[0246] The scrambling code sequence corresponding to the PSSCH is used to determine at least one of the following: identification information of the first terminal, identification information of the second terminal, and group identification information.

[0247] It should be understood that the identification information of the first terminal, and / or the identification information of the second terminal, and / or the group identification information can be carried in the PSSCH through perforation or rate matching in a manner similar to the feedback information and / or measurement information in the method embodiment. The method used is the same as that in the above-mentioned method embodiment and will not be repeated here.

[0248] In one embodiment, the device further comprises:

[0249] The resource monitoring unit 403 is used to perform resource monitoring, determine at least one available resource, and select a resource for transmitting the PSSCH from the at least one available resource.

[0250] In one embodiment, the device further comprises:

[0251] The resource determination unit 404 is used to determine the resources used to transmit the PSSCH based on the transmission resources corresponding to the data sent by the second terminal, or to determine the resources used to transmit the PSSCH based on the transmission resources corresponding to the measurement signal sent by the second terminal.

[0252] In one embodiment, the device further comprises:

[0253] The resource determination unit 404 is used to determine the resources used to transmit the PSSCH based on the third indication information sent by the second terminal, wherein the third indication information is carried in the data sent by the second terminal, or the third indication information is carried in the control information corresponding to the data sent by the second terminal.

[0254] In one embodiment, the feedback information includes at least one of the following:

[0255] ACK / NACK information, beam index information, CQI information, PMI information, RI information, power indication information, CSI information.

[0256] In one embodiment, when the feedback information includes the ACK / NACK information, the feedback information also includes HARQ process information. Here, ACK / NACK information refers to: ACK information or NACK information.

[0257] In one embodiment, the measurement information includes at least one of the following:

[0258] RSRP, RSRQ, RSSI, interference indication information, and path loss information.

[0259] Those skilled in the art should understand that Figure 4 The implementation functions of each unit in the data transmission device shown can be understood by referring to the relevant description of the aforementioned data transmission method. Figure 4 The functions of each unit in the data transmission device shown can be implemented by a program running on a processor, or by a specific logic circuit.

[0260] The above-mentioned technical scheme of the embodiment of the present application is not only applicable to the Internet of Vehicles system, but also to other end-to-end communication systems. The terminal in the embodiment of the present application can be a vehicle-mounted terminal, a handheld terminal, a PDA (Personal Digital Assistant), a wearable terminal, etc.

[0261] If the above-mentioned data transmission device of the embodiment of the present application is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the embodiment of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory (ROM, Read Only Memory), a disk or an optical disk. In this way, the embodiment of the present application is not limited to any specific combination of hardware and software.

[0262] Correspondingly, an embodiment of the present application further provides a computer storage medium, in which computer executable instructions are stored. When the computer executable instructions are executed by a processor, the above-mentioned data transmission method of the embodiment of the present application is implemented.

[0263] Figure 5 Schematic diagram of the structure of the computer device of the embodiment of the present application. The computer device of the embodiment of the present application can be any type of terminal, such as Figure 5 As 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 a processing device such as a microprocessor (MCU, Micro Controller Unit) or a programmable logic device (FPGA, Field Programmable Gate Array)), a memory 1004 for storing data, and a transmission device 1006 for communication functions. It can be understood by those skilled in the art that Figure 5 The structure shown is only for illustration and does not limit the structure of the above electronic device. Figure 5 More or fewer components as shown, or with Figure 5 Different configurations are shown.

[0264] The memory 1004 can be used to store software programs and modules of application software, such as program instructions / modules corresponding to the data transmission method in the embodiment of the present application. The processor 1002 executes various functional applications and data processing by running the software programs and modules stored in the memory 1004, that is, implementing the above method. The memory 1004 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 1004 may further include a memory remotely arranged relative to the processor 1002, and these remote memories may be connected to the computer device 100 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0265] The transmission device 1006 is used to receive or send data via a network. The specific example of the above network may include a wireless network provided by a communication provider of the computer device 100. In one example, the transmission device 1006 includes a network adapter (NIC, Network Interface Controller), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 1006 can be a radio frequency (RF, Radio Frequency) module, which is used to communicate with the Internet wirelessly.

[0266] The technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0267] In the several embodiments provided in the present application, it should be understood that the disclosed methods and intelligent devices can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as: 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 components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0268] The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0269] In addition, all functional units in the embodiments of the present application may be integrated into a second processing unit, or each unit may be a separate unit, or two or more units may be integrated into one unit; the above-mentioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0270] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application.

Claims

1. A data transmission method, the method comprising: The first terminal receives data sent by the second terminal; The first terminal sends a physical sidelink feedback channel PSFCH to the second terminal, where the PSFCH includes feedback information corresponding to the data sent by the second terminal, and the feedback information includes ACK / NACK information; The PSFCH is only used to send the feedback information, the feedback information sent in the PSFCH is carried by a sequence, and the PSFCH is not a physical sidelink control channel PSCCH or a physical sidelink shared channel PSSCH.

2. The method according to claim 1, wherein: The first terminal sends measurement information to the second terminal via a medium access control MAC control element CE in a PSSCH, wherein the MAC CE includes the measurement information.

3. The method according to claim 1 or 2, further comprising: The first terminal receives indication information carried in data sent by the second terminal, where the indication information is used to determine resources for transmitting the PSFCH.

4. The method according to claim 1 or 2, wherein: The frequency domain transmission resource of the PSFCH is determined based on the lowest subband where the data is located.

5. The method according to claim 1 or 2, wherein: The time domain transmission resource of the PSFCH is determined based on the subframe where the data is located.

6. The method according to claim 1 or 2, wherein: The method further comprises: The first terminal performs resource monitoring, determines at least one available resource, and selects a resource for transmitting the PSFCH from the at least one available resource.

7. The method according to claim 1 or 2, wherein: The feedback information also includes at least one of the following: Beam index information, channel quality indication CQI information, precoding matrix indication PMI information, rank indication RI information, power indication information, channel state indication CSI information.

8. The method according to claim 7, wherein: When the feedback information includes the ACK / NACK information, the feedback information also includes hybrid automatic repeat request HARQ process information.

9. A data transmission device, comprising: A receiving unit, configured to receive data sent by a second terminal; a sending unit, configured to send a PSFCH to the second terminal, wherein the PSFCH includes feedback information corresponding to the data sent by the second terminal, and the feedback information includes ACK / NACK information; The PSFCH is only used to send the feedback information, the feedback information sent in the PSFCH is carried by a sequence, and the PSFCH is not a physical sidelink control channel PSCCH or a physical sidelink shared channel PSSCH.

10. The device according to claim 9, wherein: The sending unit is used to send the feedback information to the second terminal through the MAC CE in the PSSCH, wherein the MAC CE includes the feedback information.

11. The device according to claim 9 or 10, wherein the receiving unit is further configured to: Receive indication information carried in the data sent by the second terminal, where the indication information is used to determine resources for transmitting PSFCH.

12. The device according to claim 9 or 10, wherein: The frequency domain transmission resource of the PSFCH is determined based on the lowest subband where the data is located.

13. The device according to claim 9 or 10, wherein: The time domain transmission resource of the PSFCH is determined based on the subframe where the data is located.

14. The device according to claim 9 or 10, wherein: The device also includes: The resource monitoring unit is used to perform resource monitoring, determine at least one available resource, and select a resource for transmitting the PSFCH from the at least one available resource.

15. The device according to claim 9 or 10, wherein: The feedback information also includes at least one of the following: Beam index information, CQI information, PMI information, RI information, power indication information, CSI information.

16. The device according to claim 15, wherein: When the feedback information includes the ACK / NACK information, the feedback information also includes HARQ process information.

17. A computer storage medium having computer executable instructions stored thereon, wherein the computer executable instructions, when executed by a processor, implement the method steps described in any one of claims 1 to 8.

18. A computer device, characterized in that: The computer device comprises: one or more processors, a memory and a transmission device, wherein: The transmission device is used to receive or send data via a network; The memory is used to store a computer program that can be executed by the processor; When the processor is used to run the computer program, the computer device is caused to perform the method according to any one of claims 1 to 8.

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