An information feedback method and apparatus, and a computer storage medium

Abstract

This invention discloses an information feedback method and apparatus, and a computer storage medium. The method includes: a first terminal receiving data sent by a second terminal, the data carrying first time information; the first terminal determining a first transmission time of feedback information corresponding to the data based on the first time information; the first terminal sending the feedback information to the second terminal at the first transmission time; the second terminal sending data to the first terminal; and the second terminal determining a candidate time-domain resource set and detecting the feedback information sent by the first terminal in the candidate time-domain resource set.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and in particular to an information feedback method and apparatus, and a computer storage medium. Background Technology

[0002] The vehicle-to-everything (V2X) system adopts sidelink (SL) transmission technology based on Long Term Evolution (LTE) - Device to Device (D2D). Unlike the traditional LTE system where communication data is received or sent through base stations, the V2X system uses direct terminal-to-terminal communication, thus achieving higher spectrum efficiency and lower transmission latency.

[0003] 3GPP Rel-14 standardized vehicle-to-everything (V2X) technology, defining two transmission modes: Mode 3 and Mode 4. In Mode 3, the terminal's transmission resources are allocated by the base station. In Mode 4, the terminal determines transmission resources using a sensing + reservation method.

[0004] In NR-V2X, supporting autonomous driving requires higher standards for data interaction between vehicles, such as higher throughput, lower latency, higher reliability, wider coverage, and more flexible resource allocation. To meet these requirements, NR-V2X necessitates the introduction of multi-antenna transmission technology. In this technology, the optimal beam selected by the transmitter from multiple candidate beams is determined based on the index value of the optimal beam fed back from the receiver.

[0005] In addition, NR-V2X needs to support various transmission methods, such as unicast, groupcast, and broadcast. In unicast transmission, the receiving end needs to provide acknowledgment (ACK) or non-acknowledgment (NACK) information, and the sending end determines whether retransmission is necessary based on the feedback information from the receiving end.

[0006] Typically, the resources for receiving feedback information (i.e., feedback resources) are acquired through contention. In congested scenarios, the receiver may struggle to obtain suitable feedback resources, or the acquired resources may have significant latency, making it impossible to meet the sender's latency requirements. Furthermore, in some scenarios, the sender may not receive feedback information at all, and blindly detecting feedback information would inevitably lead to a waste of resources. Summary of the Invention

[0007] To address the aforementioned technical problems, embodiments of the present invention provide an information feedback method and apparatus, and a computer storage medium.

[0008] The information feedback method provided in this embodiment of the invention includes:

[0009] The first terminal receives data sent by the second terminal, and the first terminal determines first time information based on the data.

[0010] The first terminal determines the first transmission time of the feedback information corresponding to the data based on the first time information;

[0011] The first terminal sends the feedback information to the second terminal at the first transmission time.

[0012] In this embodiment of the invention, the first time information is used to represent the maximum delay information at which the second terminal receives the feedback information.

[0013] In this embodiment of the invention, the first terminal receives the data sent by the second terminal at a second transmission time;

[0014] The first terminal determines the first transmission time of the feedback information corresponding to the data based on the first time information, including:

[0015] The first terminal determines a set of candidate time-domain resources based on the second transmission time and the first time information;

[0016] The first terminal selects the first transmission time for transmitting the feedback information from the candidate time-domain resource set.

[0017] In this embodiment of the invention, the first time information is carried in the Physical Sidelink Control Channel (PSCCH) or the Physical Sidelink Shared Channel (PSSCH).

[0018] In this embodiment of the invention, the first terminal determines the first time information based on the data, including:

[0019] The first terminal determines the first time information based on a first attribute of the data, wherein the first attribute includes at least one of the following:

[0020] The data includes priority information, QoS information, and latency information.

[0021] In this embodiment of the invention, the first terminal determines the first time information based on the first attribute of the data, including:

[0022] The first terminal determines the first time information based on the first attribute and the first correspondence, wherein the first correspondence represents the first time information corresponding to the first attribute.

[0023] The information feedback method provided in this embodiment of the invention includes:

[0024] The second terminal sends data to the first terminal;

[0025] The second terminal determines a candidate time-domain resource set and detects the feedback information sent by the first terminal in the candidate time-domain resource set.

[0026] In this embodiment of the invention, the second terminal sends data to the first terminal at a second transmission time;

[0027] The second terminal determines the candidate time-domain resource set, including:

[0028] The second terminal determines the candidate time-domain resource set based on the second transmission time and the first time information.

[0029] In this embodiment of the invention, the first time information is used to represent the maximum delay information at which the second terminal receives the feedback information.

[0030] In this embodiment of the invention, the second terminal detects the feedback information sent by the first terminal in the candidate temporal resource set, including:

[0031] After the second terminal sends data to the first terminal at the second transmission time, it starts a timer, wherein the duration of the timer is determined based on the first time information;

[0032] If the second terminal detects the feedback information sent by the first terminal at the first transmission moment before the timer expires, the second terminal stops detecting the feedback information and sends the feedback information to the higher-level entity.

[0033] If the second terminal does not detect the feedback information sent by the first terminal when the timer expires, the second terminal stops detecting the feedback information and sends an indication message to the higher-level entity. The indication message is used to indicate that the second terminal did not detect the feedback information in the candidate time-domain resource set.

[0034] In this embodiment of the invention, the second terminal carries the first time information in the data it sends to the first terminal.

[0035] In this embodiment of the invention, the first time information is carried in PSCCH or PSSCH.

[0036] In this embodiment of the invention, the first time information is determined based on a first attribute of the data sent by the second terminal to the first terminal at the second transmission time.

[0037] In this embodiment of the invention, the first attribute includes at least one of the following:

[0038] The data includes priority information, QoS information, and latency information.

[0039] In this embodiment of the invention, the first time information is determined based on the first attribute of the data sent by the second terminal to the first terminal at the second transmission time, including:

[0040] The first time information is determined based on the first attribute and the first correspondence, wherein the first correspondence represents the first time information corresponding to the first attribute.

[0041] The information feedback device provided in this embodiment of the invention includes:

[0042] The receiving unit is used to receive data sent by the second terminal;

[0043] A determining unit is configured to determine first time information based on the data; and, based on the first time information, determine the first transmission time of the feedback information corresponding to the data.

[0044] The sending unit is used to send the feedback information to the second terminal at the first transmission time.

[0045] In this embodiment of the invention, the first time information is used to represent the maximum delay information at which the second terminal receives the feedback information.

[0046] In this embodiment of the invention, the receiving unit receives the data sent by the second terminal at the second transmission time;

[0047] The determining unit is configured to determine a candidate time-domain resource set based on the second transmission time and the first time information; and select the first transmission time for transmitting the feedback information from the candidate time-domain resource set.

[0048] In this embodiment of the invention, the first time information is carried in PSCCH or PSSCH.

[0049] In this embodiment of the invention, the determining unit is configured to determine the first time information based on a first attribute of the data, wherein the first attribute includes at least one of the following:

[0050] The data includes priority information, Quality of Service (QoS) information, and latency information.

[0051] In this embodiment of the invention, the determining unit is used to determine the first time information based on the first attribute and the first correspondence, wherein the first correspondence represents the first time information corresponding to the first attribute.

[0052] The information feedback device provided in this embodiment of the invention includes:

[0053] A sending unit, used to send data to the first terminal;

[0054] The determining unit is used to determine the candidate time-domain resource set;

[0055] The detection unit is used to detect the feedback information sent by the first terminal in the candidate time-domain resource set.

[0056] In this embodiment of the invention, the sending unit sends data to the first terminal at a second transmission time;

[0057] The determining unit is used to determine the candidate time-domain resource set based on the second transmission time and the first time information.

[0058] In this embodiment of the invention, the first time information is used to represent the maximum delay information at which the second terminal receives the feedback information.

[0059] In this embodiment of the invention, the detection unit is configured to start a timer after sending data to the first terminal at a second transmission time, wherein the duration of the timer is determined based on the first time information; if the second terminal detects feedback information sent by the first terminal at a first transmission time before the timer expires, the second terminal stops detecting feedback information and sends the feedback information to a higher-level entity; if the second terminal does not detect feedback information sent by the first terminal when the timer expires, the second terminal stops detecting feedback information and sends indication information to a higher-level entity, wherein the indication information is used to indicate that the second terminal did not detect the feedback information in the candidate time-domain resource set.

[0060] In this embodiment of the invention, the second terminal carries the first time information in the data it sends to the first terminal.

[0061] In this embodiment of the invention, the first time information is carried in PSCCH or PSSCH.

[0062] In this embodiment of the invention, the first time information is determined based on a first attribute of the data sent by the second terminal to the first terminal at the second transmission time.

[0063] In this embodiment of the invention, the first attribute includes at least one of the following:

[0064] The data includes priority information, QoS information, and latency information.

[0065] In this embodiment of the invention, the first time information is determined based on the first attribute of the data sent by the second terminal to the first terminal at the second transmission time, including:

[0066] The first time information is determined based on the first attribute and the first correspondence, wherein the first correspondence represents the first time information corresponding to the first attribute.

[0067] The computer storage medium provided in this embodiment of the invention stores computer-executable instructions, which, when executed by a processor, implement the aforementioned information feedback method.

[0068] In the technical solution of this embodiment of the invention, a first terminal receives data sent by a second terminal, and the first terminal determines first time information based on the data; the first terminal determines a first transmission time of feedback information corresponding to the data based on the first time information; the first terminal sends the feedback information to the second terminal at the first transmission time. The second terminal sends data to the first terminal; the second terminal determines a candidate time-domain resource set, and detects the feedback information sent by the first terminal in the candidate time-domain resource set. By adopting the technical solution of this embodiment of the invention, by carrying the delay information of the feedback information in the transmitted data, the receiving end can transmit the feedback information within a predetermined time; in addition, by detecting whether there is feedback information within a certain period of time after the sending end sends the data, the sending end avoids endless detection of feedback information due to detection failure. Attached Figure Description

[0069] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0070] Figure 1 This is a schematic diagram of Mode 3 in the Internet of Vehicles (IoV) scenario.

[0071] Figure 2 This is a schematic diagram of Mode 4 in the Internet of Vehicles (IoV) scenario.

[0072] Figure 3 This is a flowchart illustrating the information feedback method according to an embodiment of the present invention. Figure 1 ;

[0073] Figure 4 This is a flowchart illustrating the information feedback method according to an embodiment of the present invention. Figure 2 ;

[0074] Figure 5 This is a schematic diagram of the structural composition of the information feedback device according to an embodiment of the present invention. Figure 1 ;

[0075] Figure 6 This is a schematic diagram of the structural composition of the information feedback device according to an embodiment of the present invention. Figure 2 ;

[0076] Figure 7 This is a schematic diagram of the structural composition of a computer device according to an embodiment of the present invention. Detailed Implementation

[0077] To gain a more detailed understanding of the features and technical content of the embodiments of the present invention, the implementation of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for reference and illustration only and are not intended to limit the embodiments of the present invention.

[0078] To facilitate understanding of the technical solutions of the embodiments of the present invention, the following will explain and describe Mode 3 and Mode 4 in the Internet of Vehicles.

[0079] Mode 3: such as Figure 1 As shown, the transmission resources of the vehicle-mounted terminal are allocated by the base station (such as the evolved NodeB in LTE). Specifically, the base station sends a control message indicating the grant resources to the vehicle-mounted terminal via the downlink (DL). Then, the vehicle-mounted terminal transmits 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 or for semi-static transmission to the vehicle-mounted terminal.

[0080] Mode 4: such as Figure 2 As shown, the vehicle-mounted terminal adopts a listening + reservation transmission method. The vehicle-mounted terminal obtains the set of available transmission resources from the resource pool through listening, and then randomly selects a resource from this set for data transmission. Because the services in the vehicle-to-everything (V2X) system have periodic characteristics, the vehicle-mounted terminal typically adopts a semi-static transmission method. That is, after selecting a transmission resource, the vehicle-mounted terminal will continuously use that resource for multiple transmission cycles, thereby reducing the probability of resource reselection and resource conflicts. The vehicle-mounted terminal carries information about reserving resources for the next transmission in the control information of this transmission. This allows other terminals to determine whether the resource has been reserved and used by the vehicle-mounted terminal by detecting its control information, thus reducing resource conflicts.

[0081] It should be noted that in LTE-V2X, mode 3 indicates that the transmission resources of the vehicle terminal are allocated by the base station, and mode 4 indicates 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 invention does not limit them.

[0082] NR-V2X requires the introduction of multi-antenna transmission technology, which offers several advantages:

[0083] 1) Higher transmission rate: By using multiple antennas for multiplexing transmission, multiple data streams can be transmitted on the same time and frequency resources, thereby increasing the transmission rate.

[0084] 2) Greater coverage and higher reliability: Beamforming technology can concentrate energy into a very narrow beam, thereby improving the signal-to-interference-plus-noise ratio (SINR) at the receiver, which can increase the success rate of reception or increase the transmission distance.

[0085] Here, beamforming can improve coverage and reliability. The transmitting end selects the optimal beam from multiple candidate beams through the following process: The transmitting end needs to perform beam scanning and transmit using different beams respectively; the receiving end receives the data transmitted by each beam respectively, thereby selecting the beam with the best transmission quality as the optimal beam, and feeding back the index value of this beam to the transmitting end; in subsequent data transmission, the transmitting end can use this optimal beam for data transmission.

[0086] In the above scheme, the receiver needs to feed back the beam index value to the transmitter. In addition, the receiver also needs to feed back other types of information to the transmitter, such as ACK / NACK information. Different feedback information can enable the transmitter to make different transmission strategies.

[0087] However, the information feedback in NR-V2X mainly has the following problems:

[0088] 1) Time constraints for information feedback: The resources for the receiver to send feedback information can be obtained through contention. In congested scenarios, the receiver may have difficulty obtaining suitable feedback resources, or the obtained feedback resources may have a large delay, and using such feedback resources to send feedback information can no longer meet the delay requirements of the sender.

[0089] 2) The sending end did not receive feedback information, which may be due to two reasons:

[0090] 2.1) The receiving end failed to receive the control information from the sending end correctly, and therefore could not receive data. The receiving end will not provide feedback.

[0091] 2.2) The receiving end correctly received the control information, detected the data, and sent feedback information, but the sending end failed to detect the feedback information correctly.

[0092] At this point, how should the sending end stop detecting the feedback information from the receiving end?

[0093] Figure 3 This is a flowchart illustrating the information feedback method according to an embodiment of the present invention. Figure 1 ,like Figure 3 As shown, the information feedback method includes the following steps:

[0094] Step 301: The first terminal receives data sent by the second terminal, and the first terminal determines the first time information based on the data.

[0095] In this embodiment of the invention, the types of the first terminal and the second terminal are not limited, and can be devices such as vehicle terminals, mobile phones, and laptops.

[0096] In this embodiment of the invention, the first time information is used to represent the maximum delay information at which the second terminal receives the feedback information.

[0097] In this embodiment of the invention, the first time information can be indicated by display. Specifically, the first time information is carried in PSCCH or PSSCH and is indicated by several bits in PSCCH or PSSCH.

[0098] In this embodiment of the invention, the first time information can also be indicated implicitly. Specifically, the first terminal determines the first time information based on a first attribute of the data, wherein the first attribute includes at least one of the following: priority information, QoS information, and latency information of the data. Here, the first terminal determines the first time information based on the first attribute and a first correspondence, wherein the first correspondence represents the first time information corresponding to the first attribute.

[0099] In practice, different attributes of the data correspond to different time information. A correspondence table can be established, which includes multiple correspondences. Each correspondence represents the correspondence between an attribute and time information. After the first terminal receives the data sent by the second terminal, it looks up the first time information corresponding to the first attribute of the received data in the correspondence table.

[0100] Step 302: The first terminal determines the first transmission time of the feedback information corresponding to the data based on the first time information.

[0101] Assumption: The first terminal receives the data sent by the second terminal at the second transmission time; accordingly:

[0102] The first terminal determines a set of candidate time-domain resources based on the second transmission time and the first time information;

[0103] The first terminal selects the first transmission time for transmitting the feedback information from the candidate time-domain resource set.

[0104] For example: The second terminal sends data with a time information of 20ms (maximum delay). The second terminal sends data at time n (second transmission time). The first terminal receives the data at time n and learns the time information it carries. The first terminal selects a resource (first transmission time) within [n+1, n+20ms] (candidate time domain resource set) and transmits feedback information.

[0105] Step 303: The first terminal sends the feedback information to the second terminal at the first transmission time.

[0106] In the technical solution of this invention embodiment, the feedback information received by the second terminal at the first transmission time meets the latency requirements of the second terminal.

[0107] Figure 4 This is a flowchart illustrating the information feedback method according to an embodiment of the present invention. Figure 2 ,like Figure 4 As shown, the information feedback method includes the following steps:

[0108] Step 401: The second terminal sends data to the first terminal.

[0109] In this embodiment of the invention, the types of the first terminal and the second terminal are not limited, and can be devices such as vehicle terminals, mobile phones, and laptops.

[0110] Step 402: The second terminal determines a candidate time-domain resource set and detects the feedback information sent by the first terminal in the candidate time-domain resource set.

[0111] In this embodiment of the invention, it is assumed that the second terminal sends data to the first terminal at a second transmission time; the second terminal determines the candidate time-domain resource set based on the second transmission time and the first time information.

[0112] The first time information is used to represent the maximum delay information at which the second terminal receives the feedback information.

[0113] In one embodiment, the second terminal carries the first time information in the data it sends to the first terminal; further, the first time information is carried in the PSCCH or PSSCH. It should be understood that the second terminal may also choose not to carry the first time information in the data it sends to the first terminal.

[0114] In this embodiment of the invention, after the second terminal sends data to the first terminal at the second transmission time, it starts a timer, wherein the duration of the timer is determined based on the first time information;

[0115] The second terminal detects the feedback information sent by the first terminal in each time unit, and the timer is decremented by 1 after each time unit is completed.

[0116] If the second terminal detects the feedback information sent by the first terminal at the first transmission moment before the timer expires, the second terminal stops detecting the feedback information and sends the feedback information to the higher-level entity.

[0117] If the second terminal does not detect the feedback information sent by the first terminal when the timer expires, the second terminal stops detecting the feedback information and sends an indication message to the higher-level entity. The indication message is used to indicate that the second terminal did not detect the feedback information in the candidate time-domain resource set.

[0118] For example, after sending data at time n, the second terminal detects feedback information within the time range [n+1, n+T]. Here, T is the maximum delay the second terminal expects to receive the feedback information. After sending data, the second terminal starts a timer T1 and sets T1 to the maximum expected delay T for receiving feedback information, such as T1 = T = 20ms. The second terminal detects feedback information in each subsequent subframe and decrements the timer. If feedback information is detected, the second terminal stops detecting it and reports the feedback information to the higher layer. If no feedback information is detected before the timer reaches 0, the second terminal stops detecting and reports an indication to the higher layer. This indication indicates that the second terminal has not detected feedback information or that the feedback detection timed out.

[0119] In one embodiment, the first time information is determined based on a first attribute of the data sent by the second terminal to the first terminal at the second transmission time. The first attribute includes at least one of the following: priority information, QoS information, and latency information of the data. Further, the first time information is determined based on the first attribute and a first correspondence, wherein the first correspondence represents the first time information corresponding to the first attribute.

[0120] Figure 5 This is a schematic diagram of the structure of the information feedback device according to an embodiment of the present invention. Figure 1 ,like Figure 5 As shown, the information feedback device includes:

[0121] The receiving unit 501 is used to receive data sent by the second terminal;

[0122] The determining unit 502 is configured to determine first time information based on the data; and determine the first transmission time of the feedback information corresponding to the data based on the first time information.

[0123] The sending unit 503 is used to send the feedback information to the second terminal at the first transmission time.

[0124] In one embodiment, the first time information is used to represent the maximum delay information at which the second terminal receives the feedback information.

[0125] In one embodiment, the receiving unit receives the data sent by the second terminal at a second transmission time;

[0126] The determining unit 502 is configured to determine a candidate time-domain resource set based on the second transmission time and the first time information; and select the first transmission time for transmitting the feedback information from the candidate time-domain resource set.

[0127] In one embodiment, the first time information is carried in PSCCH or PSSCH.

[0128] In one embodiment, the determining unit 502 is configured to determine the first time information based on a first attribute of the data, wherein the first attribute includes at least one of the following:

[0129] The data includes priority information, Quality of Service (QoS) information, and latency information.

[0130] In one embodiment, the determining unit 502 is configured to determine the first time information based on the first attribute and the first correspondence, wherein the first correspondence represents the first time information corresponding to the first attribute.

[0131] Those skilled in the art should understand that Figure 5 The functions of each unit in the information feedback device shown can be understood by referring to the relevant description of the aforementioned information feedback method. Figure 5 The functions of each unit in the information feedback device shown can be implemented by a program running on a processor or by specific logic circuits.

[0132] Figure 6This is a schematic diagram of the structure of the information feedback device according to an embodiment of the present invention. Figure 2 ,like Figure 6 As shown, the information feedback device includes:

[0133] The sending unit 601 is used to send data to the first terminal;

[0134] Determining unit 602 is used to determine the candidate time-domain resource set;

[0135] The detection unit 603 is used to detect the feedback information sent by the first terminal in the candidate time-domain resource set.

[0136] In one embodiment, the sending unit 601 sends data to the first terminal at a second transmission time;

[0137] The determining unit 602 is used to determine the candidate time-domain resource set based on the second transmission time and the first time information.

[0138] The first time information is used to represent the maximum delay information at which the second terminal receives the feedback information.

[0139] In one embodiment, the detection unit 603 is configured to start a timer after sending data to the first terminal at a second transmission time, wherein the duration of the timer is determined based on the first time information; if the second terminal detects feedback information sent by the first terminal at a first transmission time before the timer expires, the second terminal stops detecting feedback information and sends the feedback information to a higher-level entity; if the second terminal does not detect feedback information sent by the first terminal when the timer expires, the second terminal stops detecting feedback information and sends indication information to a higher-level entity, the indication information indicating that the second terminal did not detect the feedback information in the candidate time-domain resource set.

[0140] In one embodiment, the second terminal carries the first time information in the data it sends to the first terminal.

[0141] In one embodiment, the first time information is carried in PSCCH or PSSCH.

[0142] In one embodiment, the first time information is determined based on a first attribute of the data sent by the second terminal to the first terminal at the second transmission time.

[0143] In one embodiment, the first attribute includes at least one of the following: priority information, QoS information, and latency information of the data.

[0144] In one embodiment, the first time information is determined based on the first attribute of the data sent by the second terminal to the first terminal at the second transmission time, including:

[0145] The first time information is determined based on the first attribute and the first correspondence, wherein the first correspondence represents the first time information corresponding to the first attribute.

[0146] Those skilled in the art should understand that Figure 6 The functions of each unit in the information feedback device shown can be understood by referring to the relevant description of the aforementioned information feedback method. Figure 6 The functions of each unit in the information feedback device shown can be implemented by a program running on a processor or by specific logic circuits.

[0147] The technical solutions described in the embodiments of the present invention are not only applicable to vehicle networking systems, but also to other end-to-end communication systems. The terminal described in the embodiments of the present invention can be an in-vehicle terminal, a handheld terminal, a PDA (Personal Digital Assistant), a wearable terminal, etc.

[0148] If the information feedback device described in the embodiments of the present invention is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiments of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), magnetic disks, or optical disks. Thus, the embodiments of the present invention are not limited to any specific hardware and software combination.

[0149] Accordingly, embodiments of the present invention also provide a computer storage medium storing computer-executable instructions, which, when executed by a processor, implement the information feedback method described above in the embodiments of the present invention.

[0150] Figure 7 This is a schematic diagram of the structural composition of a computer device according to an embodiment of the present invention. The computer device according to an embodiment of the present invention can be any type of terminal, such as... Figure 7As shown, the computer device 100 may include one or more (only one is shown in the figure) processors 1002 (processors 1002 may include, but are not limited to, microprocessors (MCUs, Micro Controller Units) or programmable logic devices (FPGAs, Field Programmable Gate Arrays), memory 1004 for storing data, and transmission device 1006 for communication functions. Those skilled in the art will understand that... Figure 7 The structure shown is for illustrative purposes only and does not limit the structure of the aforementioned electronic device. For example, computer device 100 may also include... Figure 7 The more or fewer components shown, or having the same Figure 7 The different configurations shown.

[0151] The memory 1004 can be used to store software programs and modules of application software, such as the program instructions / modules corresponding to the information feedback method in this embodiment of the invention. The processor 1002 executes various functional applications and data processing by running the software programs and modules stored in the memory 1004, thereby implementing the above-described method. 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 memory. In some instances, the memory 1004 may further include memory remotely located relative to the processor 1002, and these remote memories can be connected to the computer device 100 via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0152] The transmission device 1006 is used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by the communication provider of the computer device 100. In one example, the transmission device 1006 includes a network adapter (NIC, Network Interface Controller), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission device 1006 may be a radio frequency (RF) module, used for wireless communication with the Internet.

[0153] The technical solutions described in the embodiments of the present invention can be combined arbitrarily without conflict.

[0154] In the several embodiments provided by this invention, it should be understood that the disclosed methods and smart devices can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple units or components can be combined, or 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, and the indirect coupling or communication connection between devices or units can be electrical, mechanical, or other forms.

[0155] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to achieve the purpose of this embodiment according to actual needs.

[0156] In addition, in the various embodiments of the present invention, each functional unit can be integrated into a second processing unit, or each unit can be a separate unit, or two or more units can be integrated into a unit; the integrated unit can be implemented in hardware or in the form of hardware plus software functional units.

[0157] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for information feedback, applied to sidelink unicast transmission, the method comprising: receiving, by a first terminal, data transmitted by a second terminal, determining, by the first terminal, first time information from the data, the first time information being carried in the data received from the second terminal; determining, by the first terminal, a first transmission time for transmitting feedback information corresponding to the data in a candidate time domain resource set, the candidate time domain resource set being determined by the first terminal according to the first time information, the candidate time domain resource set comprising a plurality of candidate time domain resources; transmitting, by the first terminal, the feedback information to the second terminal at the first transmission time; wherein the first time information is used to represent maximum latency information of the second terminal receiving the feedback information. receiving, by the first terminal, the data transmitted by the second terminal at a second transmission time; determining, by the first terminal, the first transmission time for transmitting the feedback information corresponding to the data, comprising: determining, by the first terminal, the candidate time domain resource set based on the second transmission time and the first time information; selecting, by the first terminal, the first transmission time for transmitting the feedback information in the candidate time domain resource set. The first time information is carried in a physical sidelink control channel (PSCCH) or a physical sidelink shared channel (PSSCH). Determining, by the first terminal, the first time information from the data, comprising: determining, by the first terminal, the first time information according to a first attribute of the data, wherein the first attribute comprises at least one of the following: priority information, quality of service (QoS) information, and latency information of the data. Determining, by the first terminal, the first time information according to the first attribute of the data, comprising: determining, by the first terminal, the first time information according to the first attribute and a first correspondence relationship, wherein the first correspondence relationship represents first time information corresponding to the first attribute.

6. A method for information feedback, applied to sidelink unicast transmission, the method comprising: transmitting, by a second terminal, data to a first terminal, wherein first time information is carried in the data transmitted by the second terminal; determining, by the second terminal, a candidate time domain resource set based on the first time information, and detecting, by the second terminal, feedback information corresponding to the data transmitted by the first terminal in the candidate time domain resource set, wherein the first time information is used to represent maximum latency information of the second terminal receiving the feedback information, and the candidate time domain resource set comprises a plurality of candidate time domain resources.

2. The method of claim 1, wherein, The second terminal starts a timer after transmitting the data to the first terminal, wherein a duration of the timer is determined based on the first time information. The second terminal detects the feedback information transmitted by the first terminal at a first transmission time before the timer expires. Transmitting, by the second terminal, the data to the first terminal at a second transmission time. ​ 3. The method according to any one of claims 1 to 2, wherein, ​ 4. The method according to any one of claims 1 to 2, wherein, ​ ​ ​ 5. The method of claim 4, wherein, ​ ​ ​ ​ ​ ​ ​ ​ 7. The method of claim 6, wherein, ​ The second terminal determines the candidate time domain resource set based on the first time information, including: The second terminal determines the candidate time domain resource set based on the second transmission time and the first time information.

8. The method of claim 7, wherein, The detecting the feedback information corresponding to the data sent by the first terminal in the candidate time domain resource set includes: If the second terminal detects the feedback information sent by the first terminal at the first transmission time before the expiration of the timer, the second terminal stops detecting feedback information and sends the feedback information to a high-level entity; If the second terminal does not detect the feedback information sent by the first terminal at the expiration of the timer, the second terminal stops detecting feedback information and sends indication information to a high-level entity, the indication information being used to indicate that the second terminal does not detect the feedback information in the candidate time domain resource set.

9. The method according to any one of claims 6 to 8, wherein, The first time information is carried in PSCCH or PSSCH.

10. The method according to any one of claims 6 to 8, wherein, The first time information is determined according to a first attribute of the second terminal sending the data to the first terminal at the second transmission time.

11. The method of claim 10, wherein, The first attribute includes at least one of: Priority information, quality of service (QoS) information, and latency information of the data.

12. The method of claim 11, wherein, The first time information is determined according to the first attribute of the second terminal sending the data to the first terminal at the second transmission time, including: The first time information is determined according to the first attribute and a first correspondence relationship, wherein the first correspondence relationship represents the first time information corresponding to the first attribute.

13. An information feedback apparatus applied to sidelink unicast transmission, the apparatus comprising: a receiving unit configured to receive data sent by a second terminal; a determining unit configured to determine first time information according to the data; and determine a first transmission time for transmitting feedback information corresponding to the data in a candidate time domain resource set, the first time information being carried in the data received from the second terminal, the candidate time domain resource set being determined by the determining unit according to the first time information, the candidate time domain resource set including a plurality of candidate time domain resources; a sending unit configured to send the feedback information to the second terminal at the first transmission time; wherein the first time information is used to represent maximum latency information of the second terminal receiving feedback information.

14. The apparatus of claim 13, wherein, The receiving unit receives the data sent by the second terminal at a second transmission time; The determining unit is configured to determine the candidate time domain resource set based on the second transmission time and the first time information. The first transmission time for transmitting the feedback information is selected in the candidate time domain resource set.

15. The apparatus of any one of claims 13-14, wherein, The first time information is carried in PSCCH or PSSCH.

16. The apparatus of any one of claims 13-14, wherein, The determining unit is configured to determine the first time information according to a first attribute of the data, wherein the first attribute includes at least one of: Priority information, quality of service (QoS) information, and latency information of the data.

17. The apparatus of claim 16, wherein, The determining unit is configured to determine the first time information according to the first attribute and a first correspondence relationship, wherein the first correspondence relationship indicates first time information corresponding to the first attribute. 18.An information feedback apparatus applied to sidelink unicast transmission, the apparatus comprising: a sending unit configured to send data to a first terminal, wherein first time information is carried in the data sent by the sending unit; a determining unit configured to determine a candidate time domain resource set based on the first time information; a detecting unit configured to detect feedback information corresponding to the data sent by the first terminal in the candidate time domain resource set, wherein the first time information is used to indicate maximum time delay information of the second terminal receiving the feedback information, and the candidate time domain resource set comprises a plurality of candidate time domain resources, wherein the detecting unit is further configured to: start a timer after sending data to the first terminal, wherein a time length of the timer is determined based on the first time information; detect the feedback information sent by the first terminal at a first transmission moment before the timer expires.

19. The apparatus of claim 18, wherein, The sending unit sends data to the first terminal at a second transmission moment; The determining unit is configured to determine the candidate time domain resource set based on the second transmission moment and the first time information.

20. The apparatus of claim 19, wherein, The detecting unit is configured to stop detecting feedback information and send the feedback information to a higher layer entity if the feedback information sent by the first terminal is detected at the first transmission moment before the timer expires; and stop detecting feedback information and send indication information to the higher layer entity if the feedback information sent by the first terminal is not detected when the timer expires, wherein the indication information is used to indicate that the detecting unit does not detect the feedback information in the candidate time domain resource set.

21. The apparatus of any one of claims 18 to 20, wherein, The first time information is carried in a PSCCH or a PSSCH.

22. The apparatus of any one of claims 18 to 20, wherein, The first time information is determined according to a first attribute of the second terminal sending the data to the first terminal at the second transmission moment.

23. The apparatus of claim 22, wherein, The first attribute comprises at least one of the following: priority information, QoS information, and time delay information of the data.

24. The apparatus of claim 23, wherein, The first time information is determined according to the first attribute of the second terminal sending the data to the first terminal at the second transmission moment, comprising: The first time information is determined according to the first attribute and a first correspondence relationship, wherein the first correspondence relationship indicates first time information corresponding to the first attribute. 25.A computer storage medium having computer executable instructions stored thereon, the computer executable instructions being executed by a processor to implement the method steps of any one of claims 1 to 5. 26.A computer storage medium having computer executable instructions stored thereon, the computer executable instructions being executed by a processor to implement the method steps of any one of claims 6 to 12.

27. A terminal device, comprising: comprising: a processor, a transmission device for receiving or sending data via a network, and a memory for storing a computer program capable of running on the processor, The processor, when executing the computer program, performs the method steps of any one of claims 1 to 5.

28. A terminal device, comprising: comprising: a processor, transmission means for receiving or transmitting data via a network and a memory for storing a computer program which is executable on the processor, The processor, when executing the computer program, performs the method steps of any one of claims 6 to 12.

Images