CN112583532B

CN112583532B - HARQ information transmission method and device

Info

Publication number: CN112583532B
Application number: CN201910927896.0A
Authority: CN
Inventors: 杨帆; 王俊伟
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2022-04-22
Anticipated expiration: 2039-09-27
Also published as: CN112583532A; WO2021057265A1

Abstract

The embodiment of the invention provides a method and equipment for transmitting HARQ information, which can be applied to communication systems such as V2X, LTE-V, MTC, IoT and LTE-M, M2M and are used for improving the flexibility and reliability of communication. The method comprises the following steps: receiving first scheduling information at a first time, wherein the first scheduling information is used for indicating a terminal device to send a first time-frequency resource of a first channel, and the first scheduling information carries a first allocation indication; receiving second scheduling information at a second time, wherein the second scheduling information is used for indicating the terminal equipment to send a second time-frequency resource of a second channel, the second scheduling information carries a second allocation indication, and the second channel is used for carrying HARQ information of feedback downlink data or sidestream data; and when the preset condition is met, determining the HARQ information needing to be fed back according to the first allocation indication and the second allocation indication, and sending the HARQ information needing to be fed back on the first time-frequency resource.

Description

HARQ information transmission method and device

Technical Field

The present invention relates to the field of mobile communications technologies, and in particular, to a method and an apparatus for transmitting hybrid automatic repeat request (HARQ) information.

Background

In the New Radio (NR) version 15(Release-15) protocol, after an uplink grant (UL grant) is required, the terminal device does not expect to receive downlink scheduling of HARQ information carried on a Physical Uplink Shared Channel (PUSCH) that needs to be scheduled by the uplink grant, that is, the network device does not send new downlink scheduling that requires the UE to feed back corresponding HARQ information on the PUSCH after sending the UL grant. This is because: if the network device sends a UL grant in a certain previous downlink slot, the Physical Uplink Control Channel (PUCCH) transmission carrying HARQ information corresponding to the following downlink scheduling is likely to have resource conflict with the PUSCH transmission scheduled by the UL grant, and at this time, the HARQ information is required to be multiplexed and sent on the PUSCH, which results in untimely processing, inaccurate calculated HARQ information, and even failure or loss of data transmission. However, there is a requirement for a rule that the terminal device does not expect to receive feedback of new downlink scheduling for multiplexing after the UL grant, which limits flexibility and reliability of communication.

Disclosure of Invention

Embodiments of the present invention provide a method and an apparatus for transmitting HARQ information, so as to implement timely and accurately feeding back HARQ information corresponding to downlink scheduling and/or side-line scheduling after a UL grant to a network device, and the method and the apparatus can be applied to a communication system, such as V2X, LTE-V, MTC, IoT, LTE-M, M2M, and the like, so as to improve flexibility and reliability of communication.

In a first aspect, a method for transmitting HARQ information is provided, where the method includes: receiving first scheduling information at a first time, where the first scheduling information is used to instruct a terminal device to send a first time-frequency resource of a first channel, and the first scheduling information carries a first allocation instruction, where the first channel is an uplink shared channel or a sidelink shared channel; receiving second scheduling information at a second time, where the second scheduling information is used to instruct the terminal device to send a second time-frequency resource of a second channel, the second scheduling information carries a second allocation instruction, and the second channel is used to carry HARQ information for feeding back downlink data or sidestream data; and when a preset condition is met, determining the HARQ information needing to be fed back according to the first allocation indication and the second allocation indication, and sending the HARQ information needing to be fed back on the first time-frequency resource.

In the above scheme, when a preset condition is met, determining HARQ information required to be fed back according to the first allocation indication and the second allocation indication, sending the HARQ information required to be fed back on the first time-frequency resource, and sending the HARQ information required to be fed back on the first time-frequency resource. Compared with the prior art that the terminal equipment does not expect to receive the multiplexing of the new downlink scheduling feedback information after the UL grant is limited in order to avoid the occurrence of the time-frequency resource overlapping scene, the method and the device for transmitting the HARQ information provide a new HARQ information transmission scheme, and the flexibility and the reliability of communication can be improved.

In a possible design, the preset condition may be that the first time-frequency resource and the second time-frequency resource collide, for example, the first time-frequency resource and the second time-frequency resource overlap in a time domain, a time domain position of the first time-frequency resource and a time domain position of the second time-frequency resource are located in a same time window, and the like, which is not limited herein.

According to the embodiment, when time-frequency resources conflict, HARQ information corresponding to downlink scheduling and/or side scheduling of second scheduling information scheduling after the first scheduling information can be multiplexed to the first time-frequency resources indicated by the first scheduling information for transmission, the HARQ information is timely and accurately fed back to the network equipment, and the flexibility and reliability of communication are improved.

In one possible design, if the value of the first allocation indication is greater than or equal to the value of the second allocation indication, determining HARQ information requiring feedback based on the value of the first allocation indication; determining HARQ information requiring feedback based on the value of the second allocation indication if the value of the first allocation indication is less than the value of the second allocation indication.

In the embodiment, the HARQ information needing to be fed back is determined by comparing the values of the first allocation indication and the second allocation indication, and then the HARQ information corresponding to the downlink scheduling and/or the sidestream scheduling of the second scheduling information scheduling after the first scheduling information is quickly and accurately multiplexed onto the first time-frequency resource indicated by the first scheduling information for transmission.

In one possible design, the first allocation indication is used to indicate a downlink scheduling for which the corresponding HARQ feedback information needs to be transmitted on the first time-frequency resource and/or a number of side-row scheduling for the corresponding HARQ feedback information; the second allocation indication is used for indicating the number of downlink scheduling and/or sidelink scheduling which need to send corresponding HARQ feedback information on the second time-frequency resource.

In this embodiment, a specific design method of the first allocation indication and the second allocation indication is provided, which provides a basis for the scheme of determining the HARQ information by comparing the sizes of the first allocation indication and the second allocation indication, and ensures the reliability of communication.

In order to improve flexibility of the scheme, in a possible design, the first allocation indication is an indication field in the first scheduling information, and a value of the indication field indicates a total number of downlink scheduling and sidelink scheduling that require transmission of corresponding HARQ feedback information on the first time-frequency resource; the second allocation indication is a hybrid allocation indication MAI. In another possible design, the first allocation indication is two indication fields in the first scheduling information, where a value of one of the two indication fields indicates a number of downlink schedules that need to send corresponding HARQ feedback information on the first time-frequency resource, and a value of the other indication field indicates a number of side-row schedules that need to send corresponding HARQ feedback information on the first time-frequency resource; the second allocation indication is a downlink allocation indication DAI or a sideline allocation indication SAI.

The embodiment provides a plurality of design methods of the first allocation indication and the second allocation indication, thereby improving the applicability of the scheme and further improving the flexibility and reliability of communication.

In a possible design, the first scheduling information carries a first indication field, and a value of the first indication field is a first preset value; the first preset value is used for indicating that new scheduling information exists after the first time, and HARQ feedback corresponding to the new scheduling information needs to be sent on the first time-frequency resource.

In this embodiment, by designing the first indication field, the terminal device can more quickly determine that the HARQ feedback corresponding to the new scheduling information needs to be sent on the first time-frequency resource, thereby further improving the timeliness of the HARQ feedback.

In a possible design, after the second time, before the HARQ information that needs to be fed back is sent on the first time-frequency resource, third scheduling information may also be received, where the third scheduling information carries a third allocation indication; when the third allocation indication is used for updating the first allocation indication, determining the HARQ information needing feedback based on the third allocation indication.

In the embodiment, when the first time-frequency resource and the second time-frequency resource conflict, the value of the first allocation indication in the previous first scheduling information is updated by issuing the new third scheduling information so as to meet the generation of the multiplexing HARQ codebook, thereby timely and accurately feeding back the HARQ information corresponding to the downlink scheduling and/or the sidestream scheduling after the UL grant to the network equipment, and improving the flexibility and reliability of communication.

In one possible design, the third scheduling information satisfies at least one of the following conditions: the resource indication information in the third scheduling information is the same as the resource indication information in the first scheduling information; the third scheduling information and the first scheduling information have the same HARQ process number; the newly transmitted data in the third scheduling information indicates that the NDI is not turned over; the third scheduling information comprises a second indication domain, and the value of the second indication domain is a second preset value; wherein the second preset value is used to indicate that the third allocation indication in the third scheduling information is used to update the first allocation indication in the first scheduling information.

By the embodiment, various ways are provided for determining that the new third scheduling information is used for updating the value of the first allocation indication in the previous first scheduling information, so that the flexibility of the scheme is improved.

In another possible design, the resource indication information in the third scheduling information and the resource indication information in the first scheduling information may be different, that is, the third scheduling information indicates the terminal device to transmit HARQ information on a new time-frequency resource.

The embodiment can avoid multiplexing caused by resource conflict, but can also improve the timeliness and the accuracy of HARQ feedback.

In one possible design, the first allocation indication includes a first allocation indication portion and a second allocation indication portion, the first allocation indication portion is used to indicate a number of downlink schedules and/or sidelink schedules that have been scheduled before the first time and require transmission of corresponding HARQ feedback information on the first time-frequency resource, and the second allocation indication portion is used to indicate a number of downlink schedules and/or sidelink schedules that may be scheduled after the first time and require transmission of corresponding HARQ feedback on the first time-frequency resource.

In this embodiment, the first allocation indication in the first scheduling information respectively includes the first allocation indication part and the second allocation indication part, so that when the terminal device determines the HARQ information to be fed back based on the first allocation indication, the terminal device can at least ensure the accuracy of the codebook of the first part, that is, the accuracy of the actually sent downlink scheduling/sidestream scheduling feedback condition, and simultaneously provide a feedback condition for subsequent downlink scheduling/sidestream scheduling, thereby avoiding the problem of codebook confusion caused by subsequent downlink scheduling/sidestream scheduling, playing a role in checking, and improving the flexibility and reliability of communication.

In one possible design, if the value of the second allocation indication is smaller than the value of the first allocation indication part, determining HARQ information requiring feedback based on the first allocation indication part or the first allocation indication; and if the value of the second allocation indication is greater than or equal to the value of the first allocation indication part, determining the HARQ information needing to be fed back based on the first allocation indication.

In this embodiment, when the value of the second allocation indication falls within a different value range, different HARQ information determination methods are provided correspondingly, so that the accuracy of HARQ information can be further improved.

In a possible design, before the HARQ information that needs to be fed back is sent on the first time-frequency resource, the HARQ information determined according to the first allocation indicating part may be further mapped to a first part of time-frequency resources in the first time-frequency resource, and the HARQ information determined according to the second allocation indicating part may be mapped to a second part of time-frequency resources in the first time-frequency resource.

By the embodiment, after receiving the first time-frequency resource, the network device can obtain HARQ information corresponding to downlink scheduling or sidelink scheduling before the second time from the first part of time-frequency resources in the first time-frequency resource, and obtain HARQ information corresponding to downlink scheduling or sidelink scheduling after the second time from the second part of time-frequency resources in the first time-frequency resource, so that the efficiency of signal processing can be improved, and the system performance can be improved.

In a second aspect, a method for transmitting HARQ information is provided, the method including: sending first scheduling information at a first time, wherein the first scheduling information is used for indicating a terminal device to send a first time-frequency resource of a first channel, the first scheduling information carries a first allocation indication, and the first channel is an uplink shared channel or a side-line shared channel; sending second scheduling information at a second time, where the second scheduling information is used to instruct the terminal device to send a second time-frequency resource of a second channel, the second scheduling information carries a second allocation instruction, and the second channel is used to feed back HARQ information of downlink data or sidestream data; and receiving HARQ information sent by the terminal equipment on the first time-frequency resource.

In one possible design, the preset conditions include: the first time frequency resource and the second time frequency resource are overlapped on a time domain; or the time domain position of the first time frequency resource and the time domain position of the second time frequency resource are positioned in the same time window.

In a possible design, the first allocation indication is an indication field in the first scheduling information, and a value of the indication field indicates a total number of downlink scheduling and sidelink scheduling that are required to send corresponding HARQ feedback information on the first time/frequency resource; the second allocation indication is a hybrid allocation indication, MAI; or, the first allocation indication is two indication fields in the first scheduling information, where a value of one of the two indication fields indicates a number of downlink schedules that need to send corresponding HARQ feedback information on the first time-frequency resource, and a value of the other indication field indicates a number of sideline schedules that need to send corresponding HARQ feedback information on the first time-frequency resource; the second allocation indication is a downlink allocation indication DAI or a sideline allocation indication SAI.

In a possible design, after the second time, before receiving HARQ information sent by the terminal device on the first time-frequency resource, third scheduling information may also be sent, where the third scheduling information carries a third allocation indication, and the third allocation indication is used to update the first allocation indication.

In one possible design, after receiving HARQ information sent by the terminal device on the first time-frequency resource, HARQ information mapped to a first part of time-frequency resources in the first time-frequency resource may be further determined according to the first allocation indicating part, and HARQ information mapped to a second part of time-frequency resources in the first time-frequency resource may be further determined according to the second allocation indicating part.

In a third aspect, a terminal device is provided, including: a receiving module, configured to receive first scheduling information at a first time, where the first scheduling information is used to instruct a terminal device to send a first time-frequency resource of a first channel, and the first scheduling information carries a first allocation instruction, where the first channel is an uplink shared channel or a sidelink shared channel; receiving second scheduling information at a second time, where the second scheduling information is used to instruct the terminal device to send a second time-frequency resource of a second channel, the second scheduling information carries a second allocation instruction, and the second channel is used to carry HARQ information for feeding back downlink data or sidestream data; a processing module, configured to determine, according to the first allocation indication and the second allocation indication, HARQ information that needs to be fed back when a preset condition is met; and a sending module, configured to send HARQ information that needs to be fed back on the first time-frequency resource.

In one possible design, the processing module is to: determining HARQ information needing feedback based on the value of the first allocation indication if the value of the first allocation indication is greater than or equal to the value of the second allocation indication;

determining HARQ information requiring feedback based on the value of the second allocation indication if the value of the first allocation indication is less than the value of the second allocation indication.

In one possible design, the receiving module is further configured to: after the second time, before the sending module sends the HARQ information needing to be fed back on the first time-frequency resource, receiving third scheduling information, where the third scheduling information carries a third allocation indication; the processing module is used for: when the third allocation indication is used for updating the first allocation indication, determining the HARQ information needing feedback based on the third allocation indication.

In one possible design, the processing module is to: if the value of the second allocation indication is smaller than the value of the first allocation indication part, determining HARQ information needing to be fed back based on the first allocation indication part or the first allocation indication; and if the value of the second allocation indication is greater than or equal to the value of the first allocation indication part, determining the HARQ information needing to be fed back based on the first allocation indication.

In one possible design, the processing terminal device is further configured to: before the sending module sends the HARQ information needing to be fed back on the first time-frequency resource, the HARQ information determined according to the first allocation indicating part is mapped to a first part of time-frequency resources in the first time-frequency resources, and the HARQ information determined according to the second allocation indicating part is mapped to a second part of time-frequency resources in the first time-frequency resources.

In a fourth aspect, a network device is provided, comprising: a sending module, configured to send first scheduling information at a first time, where the first scheduling information is used to instruct a terminal device to send a first time-frequency resource of a first channel, and the first scheduling information carries a first allocation instruction, where the first channel is an uplink shared channel or a sidelink shared channel; sending second scheduling information at a second time, where the second scheduling information is used to instruct the terminal device to send a second time-frequency resource of a second channel, the second scheduling information carries a second allocation instruction, and the second channel is used to feed back HARQ information of downlink data or sidestream data; a receiving module, configured to receive HARQ information sent by the terminal device on the first time-frequency resource.

In one possible design, the sending module is further configured to: after the second time, before the receiving module receives the HARQ information sent by the terminal device on the first time-frequency resource, sending third scheduling information, where the third scheduling information carries a third allocation indication, and the third allocation indication is used to update the first allocation indication.

In one possible design, the network device further includes a processing module, configured to, after the receiving module receives HARQ information sent by the terminal device on the first time-frequency resource, determine, according to the first allocation indicating portion, HARQ information mapped to a first part of the first time-frequency resources, and determine, according to the second allocation indicating portion, HARQ information mapped to a second part of the first time-frequency resources.

In a fifth aspect, a network device is provided, and the specific structure of the network device may include a processor, and optionally, may further include a transceiver. The processor and the transceiver may perform corresponding functions in the method as provided in the second aspect or any one of the possible designs of the second aspect as described above.

In a sixth aspect, a terminal device is provided, where the specific structure of the terminal device may include a processor, and optionally, may further include a transceiver. The processor and the transceiver may perform the respective functions in the method as provided in the first aspect above or any one of the possible designs of the first aspect.

In a seventh aspect, a system is provided, where the system includes the terminal and the network device.

In an eighth aspect, a communications apparatus is provided that includes a processor and a memory to store computer-executable instructions; the processor is configured to execute computer-executable instructions stored by the memory to cause the communication device to perform a method as provided by any one of the possible designs of the first aspect.

In a ninth aspect, a communications apparatus is provided that includes a processor and an interface circuit; the interface circuit is used for receiving code instructions and transmitting the code instructions to the processor; the processor executes the code instructions to perform a method as provided by the first aspect or any one of the possible designs of the first aspect described above.

In a tenth aspect, a communication apparatus is provided, comprising a processor and a memory; the memory is used for storing computer execution instructions; the processor is configured to execute computer-executable instructions stored by the memory to cause the communication device to perform a method as provided by any one of the possible designs of the second aspect.

In an eleventh aspect, a communication device is provided that includes a processor and an interface circuit; the interface circuit is used for receiving code instructions and transmitting the code instructions to the processor; the processor executes the code instructions to perform a method as provided by any one of the possible designs of the second aspect described above.

In a twelfth aspect, there is provided a readable storage medium for storing instructions that, when executed, cause a method as provided by any one of the possible designs of the first aspect described above to be implemented.

In a thirteenth aspect, there is provided a readable storage medium for storing instructions that, when executed, cause a method as provided by any one of the possible designs of the second aspect described above to be implemented.

In a fourteenth aspect, a chip is provided, the chip being coupled to a memory and configured to read and execute program instructions stored in the memory to implement the method as provided in any one of the possible designs of the first aspect or the second aspect.

In a fifteenth aspect, there is provided a computer program product comprising instructions stored thereon, which when run on a computer, cause the computer to perform the method as provided by any one of the possible designs of the above first or second aspect.

In an embodiment of the present invention, a new HARQ information transmission method is provided in an embodiment of the present invention, where the method includes: receiving first scheduling information at a first time, where the first scheduling information is used to instruct a terminal device to send a first time-frequency resource of a first channel, and the first scheduling information carries a first allocation instruction, where the first channel is an uplink shared channel or a sidelink shared channel; receiving second scheduling information at a second time, where the second scheduling information is used to instruct the terminal device to send a second time-frequency resource of a second channel, the second scheduling information carries a second allocation instruction, and the second channel is used to carry HARQ information for feeding back downlink data or sidestream data; when a preset condition is met, for example, a first time-frequency resource and a second time-frequency resource collide, HARQ information that needs to be fed back may be determined according to the first allocation indication and the second allocation indication, and the HARQ information that needs to be fed back may be sent on the first time-frequency resource. Compared with the prior art that the terminal device does not expect to receive the multiplexing of the new downlink scheduling feedback information after the UL grant is limited in order to avoid the occurrence of the time-frequency resource overlapping scene, the method and the device for transmitting the HARQ information have the advantages that the HARQ information corresponding to the downlink scheduling and/or the sidestream scheduling after the UL grant can be multiplexed onto the PUSCH scheduled by the UL grant for transmission, the effect of timely and accurately feeding the HARQ information corresponding to the downlink scheduling and/or the sidestream scheduling after the UL grant back to the network device is achieved, and the flexibility and the reliability of communication can be improved.

Drawings

FIG. 1A is a schematic diagram of a possible application scenario in an embodiment of the present invention;

FIG. 1B is a schematic diagram of another possible application scenario in an embodiment of the invention;

FIG. 1C is a schematic diagram of another possible application scenario in an embodiment of the present invention;

FIG. 2A is a diagram illustrating a resource scheduling scenario according to an embodiment of the present invention;

FIG. 2B is a diagram illustrating a resource scheduling scenario according to an embodiment of the present invention;

fig. 3 is a flowchart of a HARQ information transmission method according to an embodiment of the present invention;

FIG. 4A is a diagram illustrating resource overlap according to an embodiment of the present invention;

FIG. 4B is a diagram illustrating another resource overlap according to an embodiment of the present invention;

FIG. 4C is a diagram illustrating another resource overlap according to an embodiment of the present invention;

fig. 5 is a flowchart of another HARQ information transmission method according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of overlapping of a first time-frequency resource and a second time-frequency resource in a time domain;

fig. 7 is a schematic diagram of a resource scheduling method according to an embodiment of the present invention;

fig. 8 is a flowchart of another HARQ information transmission method according to an embodiment of the present invention;

FIG. 9 is a diagram illustrating a DAI format according to an embodiment of the present invention;

fig. 10A is a schematic diagram of an HARQ codebook generating method according to an embodiment of the present invention;

fig. 10B is a schematic diagram of another HARQ codebook generating method according to an embodiment of the present invention;

fig. 10C is a schematic diagram of another HARQ codebook generation method according to an embodiment of the present invention;

fig. 10D is a diagram illustrating another HARQ codebook generating method according to an embodiment of the present invention;

fig. 11 is a schematic diagram of mapping HARQ information to time-frequency resources according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a first terminal device according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a first network device according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a second terminal device according to an embodiment of the present invention;

fig. 15 is a schematic structural diagram of a second network device according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings.

In order to facilitate understanding of the embodiments of the present invention, an application scenario of the present application is described below.

Fig. 1A is a schematic view of a possible application scenario in the embodiment of the present invention. Fig. 1A includes a terminal device and a network device, which can communicate with each other. After the network equipment sends downlink data to the terminal equipment, the terminal equipment feeds back HARQ information to the network equipment according to the receiving condition of the downlink data, wherein the HARQ information comprises an Acknowledgement (ACK) and a non-acknowledgement (NACK). If the terminal device successfully receives the downlink data sent by the network device, the terminal device may reply an ACK to the network device, and the network device may continue to transmit new data or end the transmission process. If the terminal equipment fails to receive the downlink data sent by the network equipment, the terminal equipment can reply NACK to the network equipment, and the network equipment can retransmit the data transmitted last time, so that the success rate of data transmission is improved as much as possible. If the base station does not receive any feedback, the terminal device is considered to be in a Discontinuous Transmission (DTX) state.

Please refer to fig. 1B, which is a schematic diagram of another possible application scenario in the embodiment of the present invention. Fig. 1B includes a network device, a terminal device 1, and a terminal device 2, where both the terminal device 1 and the terminal device 2 may communicate with the network device, and the terminal device 1 and the terminal device 2 may also communicate with each other directly (i.e., device to device (D2D)). The link over which terminal device 1 and terminal device 2 communicate directly is a sidelink. The network device may transmit a side-link grant (SL grant) or a Sidelink Control Information (SCI) to the terminal device, for example, the terminal device 1, schedule the terminal device 1 to transmit the sideline data to the terminal device 2, and the HARQ information corresponding to the sideline data may be reported to the network device by the terminal device unit 1 which is the transmitting device.

Please refer to fig. 1C, which is a schematic diagram of another possible application scenario in the embodiment of the present invention. Fig. 1C includes a network device, a terminal device, and a vehicle-mounted terminal, where both the terminal device and the vehicle-mounted terminal may communicate with the network device, the terminal device and the vehicle-mounted terminal may also directly communicate with each other (i.e., V2X), a link where the terminal device and the vehicle-mounted terminal directly communicate with the vehicle-mounted terminal may also be referred to as a sidelink, and HARQ information corresponding to sidelink data on the sidelink may also be reported to the network device by a sending device (e.g., the terminal device or the vehicle-mounted terminal).

In the 5G system, the feedback time of the HARQ information may be configured by the network device through Radio Resource Control (RRC) signaling, or indicated through Downlink Control Information (DCI) for dynamic signaling. The transmission of DCI is generally completed through a Physical Downlink Control Channel (PDCCH), but the transmission of PDCCH is not completely reliable, and the terminal device is affected by factors such as channel conditions, and there still exist situations that the terminal device cannot receive the PDCCH and cannot correctly analyze DCI, so that the terminal device cannot accurately feed HARQ information back to the network device, thereby causing data loss and increased transmission delay.

In order to avoid this problem, Downlink Assignment Indication (DAI) mechanisms are introduced in both LTE and NR systems, where DCI includes a DAI field for telling a terminal device how many downlink data in an HARQ feedback window need to be HARQ fed back, so that the terminal device can determine whether to miss detection of a PDCCH and corresponding downlink data (e.g., PDSCH data) based on the DAI field. In the 5G NR system, the DAI mechanism includes two different DAIs, one is a counter DAI (counter DAI), which indicates how many downlink data have been transmitted/scheduled or the current DCI has been transmitted/scheduled; the other DAI is a total DAI, which indicates the number of downlink data PDSCHs that need to be fed back in one HARQ feedback window, or the number of bits of HARQ information that needs to be fed back, or the number of HARQ bits that need to be multiplexed.

In the NR Release-15 protocol, after the UL grant is requested, the terminal device does not expect to receive the new downlink scheduling of the HARQ information that needs to be carried on the PUSCH of the uplink grant scheduling, that is, the network device does not send the new downlink scheduling that requires the UE to feed back the corresponding HARQ information on the PUSCH after sending the UL grant. This is because: if the network device sends a UL grant in a certain preceding downlink slot, the PUCCH transmission carrying HARQ information corresponding to the following downlink scheduling is likely to have resource conflict with the PUSCH transmission scheduled by the UL grant. For example, referring to fig. 2A, a horizontal axis in fig. 2A represents a time domain, a vertical axis represents a frequency domain, PDSCH _1 is downlink data scheduled before a UL grant, PDSCH _2 is new downlink data scheduled after the UL grant, HARQ information corresponding to PDSCH _1 and PDSCH _2 needs to be carried on a PUCCH for transmission, uplink data scheduled by the UL grant needs to be carried on a PUSCH for transmission, and as can be seen from fig. 2A, time-frequency resources for PUSCH transmission and time-frequency resources for PUCCH overlap on slot (slot) n + 2. In this case, HARQ information generally needs to be multiplexed with the PUSCH, that is, HARQ information that should be originally transmitted on the PUCCH is carried on the PUSCH for transmission. However, the bearer of the PDSCH subjected to subsequent scheduling may cause the backoff of the HARQ codebook generated before, which may cause the terminal device to process in a non-timely manner, thereby increasing the time delay of uplink transmission. In addition, if the UL grant is DCI format 1_1, the DCI may carry a DAI value, where the DAI is a total DAI, that is, the number of PDSCHs that need to multiplex HARQ information on a PUSCH or the number of PDCCHs that need to be detected by the terminal device, and the terminal device may generate an HARQ codebook according to the total DAI, but the total DAI may not include downlink scheduling after the UL grant, so that the terminal device may not generate an accurate HARQ codebook even if HARQ information corresponding to subsequent downlink scheduling of the UL grant is required to be multiplexed. Therefore, the protocol requires that the HARQ feedback of PDSCH _2 cannot be multiplexed for transmission on PUSCH, meaning that the resources of the two cannot overlap.

However, such scheduling restriction (the terminal device does not expect to receive new downlink scheduling after the UL grant is required) is a relatively strong restriction, and especially in a Time Division Duplex (TDD) scenario, if the UL grant is transmitted in a certain previous downlink slot and the number of time domain symbols occupied by the scheduled PUSCH is relatively large, there is a very high possibility that PUCCH transmission carrying HARQ feedback of the PDSCH scheduled next overlaps with PUSCH transmission in the current uplink slot, so in order to avoid multiplexing, the downlink HARQ feedback scheduled after the UL grant can only be delayed to be transmitted in the next uplink slot, which increases delay undoubtedly for HARQ feedback, and has a great impact on low-delay and high-reliability (URLLC) traffic. Meanwhile, for HARQ feedback on an unlicensed spectrum (unlicensed band), since feedback according to a timing relationship on the licensed spectrum cannot be completely strict, and scheduling of a single DCI can be supported to feed back all previously fed back PDSCHs together according to the existing technical viewpoint and conference conclusion, it is also possible to feed back downlink scheduling before and after the UL grant together.

Therefore, the prior art has the problem that the HARQ information corresponding to the downlink scheduling after the UL grant cannot be timely and accurately fed back to the network device in a multiplexing manner on the PUSCH, so that the terminal device is stipulated not to expect to receive new downlink scheduling which needs to multiplex the HARQ information on the PUSCH after the UL grant, and the flexibility and reliability of communication are severely limited. In view of this, embodiments of the present invention provide a new HARQ information transmission method, which mainly provides an enhanced DAI mechanism and a UL grant to multiplex HARQ information corresponding to downlink scheduling and/or sidelink scheduling after the UL grant onto a PUSCH scheduled for transmission, so as to achieve the purpose of timely and accurately feeding back HARQ information corresponding to downlink scheduling and/or sidelink scheduling after the UL grant to a network device.

In order to make the embodiments of the present invention clearer, the following provides a general description of some of the contents and concepts related to the embodiments of the present invention.

1) Terminal equipment, also known as terminals, includes equipment providing voice and/or data connectivity to a user, which may include, for example, handheld devices having wireless connection capability or processing devices connected to wireless modems. The terminal device may communicate with a core network via a Radio Access Network (RAN), exchanging voice and/or data with the RAN. The terminal device may include a User Equipment (UE), a V2X terminal device, a wireless terminal device, a mobile terminal device, a device-to-device communication (D2D) terminal device, a machine-to-machine/machine-type communication (M2M/MTC) terminal device, an internet of things (IoT) terminal device, a subscriber unit (subscriber unit), a subscriber station (subscriber state), a mobile station (mobile state), a remote station (remote state), an access point (access point, AP), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), or a user equipment (user device), etc. For example, mobile telephones (or so-called "cellular" telephones), computers with mobile terminal equipment, portable, pocket, hand-held, computer-included mobile devices, and the like may be included. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. Also included are constrained devices, such as devices that consume less power, or devices that have limited storage capabilities, or devices that have limited computing capabilities, etc. Examples of information sensing devices include bar codes, Radio Frequency Identification (RFID), sensors, Global Positioning Systems (GPS), laser scanners, and the like.

By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable smart device or intelligent wearable equipment etc. is the general term of using wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets, smart helmets, smart jewelry and the like for monitoring physical signs.

The various terminal devices described above, if located on a vehicle (e.g., placed in or installed in the vehicle), may be considered to be vehicle-mounted terminal devices, which are also referred to as on-board units (OBUs), for example. When the terminal device is a vehicle-mounted terminal device, the vehicle-mounted terminal device can feed back HARQ information corresponding to downlink scheduling, and can also feed back HARQ information corresponding to side-row scheduling. Therefore, in the embodiment of the present invention, the HARQ information described below may include HARQ information corresponding to side-line data in addition to HARQ information corresponding to downlink data.

2) Network devices, such as Access Network (AN) devices, Radio Access Network (RAN) devices, and access network devices, such as base stations (e.g., access points), may refer to devices in AN access network that communicate with wireless terminal devices over AN air interface through one or more cells. The base station may be configured to interconvert received air frames and Internet Protocol (IP) packets as a router between the terminal device and the rest of the access network, which may include an IP network. The network device may also coordinate attribute management for the air interface. For example, the network device may include an evolved Node B (NodeB or eNB or e-NodeB) in a Long Term Evolution (LTE) system or an advanced long term evolution (LTE-a), or may also include a next generation Node B (gNB) or a next generation evolved Node B (gNB) in a fifth generation mobile communication technology (5G) New Radio (NR) system: enhanced next generation base stations; the system may also include a Centralized Unit (CU) and a Distributed Unit (DU) in a Cloud RAN (Cloud RAN) system, or may also include a relay device, which is not limited in the embodiment of the present application.

In this embodiment, the network device may further include a core network device, and the core network device includes, for example, a network device that processes and forwards signaling and data of a user. In the 4G system, one core network device is, for example, a Mobility Management Entity (MME). The MME is a key control node of an access network of the LTE system defined by the 3rd generation partnership project (3 GPP) protocol, and is responsible for positioning and paging procedures of idle mode terminal devices, and the like, including relaying. In short, the MME is a core network device responsible for a signaling processing part. Or, in the 5G system, the core network device includes, for example, a core network device such as an access management network element, a session management network element, or a user plane gateway. The user plane gateway may be a server having functions of performing mobility management, routing, forwarding and the like on user plane data, and is generally located on a network side, such as a Serving Gateway (SGW) or a packet data network gateway (PGW) or a user plane network function (UPF).

3) Time-frequency resources, frequency-domain resources in a wireless communication system, are generally described in units of Physical Resource Blocks (PRBs) or RBs. One RB includes 12 subcarriers in the frequency domain. The time domain resource is generally in units of Orthogonal Frequency Division multiplexing Multiple access (OFDM) symbols, sub-slots (sub-slots), slots (slots), subframes (subframes), or frames (frames). It should be noted that the terms "time-frequency resource" and "resource" in the embodiments of the present application may be used interchangeably.

4) Hybrid automatic repeat request (HARQ) is a technique formed by combining forward error correction coding and automatic repeat request. For example, the network device may allocate and indicate a time-frequency resource for sending Channel State Information (CSI) and hybrid automatic repeat request (HARQ) information to the terminal, so that the terminal device sends corresponding HARQ response information on the indicated time-frequency resource. For example, the network device sends downlink data through a Physical Downlink Shared Channel (PDSCH) on a time-frequency resource with a time-domain position of slot (slot) n, and instructs the terminal device to feed back HARQ response information corresponding to the downlink data on the time-frequency resource with a time-domain position of slot (n + k) through a downlink control channel (PDCCH). Thus, when the terminal device receives the data on the time-frequency resource with the time domain position slot n, the HARQ response information is fed back on the time-frequency resource with the time domain position slot (n + k). For convenience of explanation, the HARQ acknowledgement information is expressed in terms of HARQ information herein, that is, the HARQ acknowledgement information may be used interchangeably with HARQ information.

5) A time window may refer to a time range or a time period, the time period has a start time and an end time, and the length of the time window is the length from the start time to the end time. A time window may contain one or more time units including slots, symbols, subframes, etc.

6) The terms "system" and "network" in embodiments of the present invention may be used interchangeably. "plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" generally indicates that the preceding and following related objects are in an "or" relationship, unless otherwise specified.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention.

Example one

Please refer to fig. 3, which is a flowchart illustrating a HARQ information transmission method according to an embodiment of the present invention, the method includes:

s101, the terminal equipment receives first scheduling information at a first time, wherein the first scheduling information is used for indicating the terminal equipment to send a first time-frequency resource of a first channel, and the first scheduling information carries a first allocation indication.

The first scheduling information may be DCI for uplink data scheduling, where the DCI may also be referred to as a UL grant, or may also be DCI for sidelink scheduling, or a sidelink grant (SL grant), and the embodiment of the present invention is not limited herein. When the terminal device receives the UL grant at the first time, the first channel may be an uplink shared channel, that is, the UL grant is used to instruct the terminal device to transmit the first time-frequency resource of the uplink shared channel. When the terminal device receives the SL grant at the first time, the first channel may be a sidelink shared channel, that is, the SL grant is used to instruct the terminal device to transmit the first time-frequency resource of the sidelink shared channel.

The first allocation indication carried in the first scheduling information may be a total DAI. It should be understood that the embodiment of the present invention may be applied to a HARQ feedback scenario of downlink data, and may also be applied to a HARQ feedback scenario of sidelink data, and accordingly, the first allocation indication may indicate a number of downlink schedules that need to send corresponding HARQ feedback information on the first time-frequency resource, may also indicate a number of sideline schedules that need to send corresponding HARQ feedback information on the first time-frequency resource, and may also indicate a total number of downlink schedules and sideline schedules that need to send corresponding HARQ feedback information on the first time-frequency resource, which is not limited in this embodiment of the present invention.

The downlink scheduling in the embodiment of the present invention may be at least one of the following: the PDSCH receives or releases the semi-static PDSCH and the combination of the serving cell where the downlink control information DCI associated with the PDSCH is located and the downlink control channel monitoring opportunity; a DCI for scheduling PDSCH reception or semi-static PDSCH release; a downlink control channel PDCCH for bearing DCI information; PDSCH reception or release of semi-static PDSCH.

The side scheduling in the embodiment of the present invention may be at least one of the following: the combination of the PSSCH of the physical side row shared channel/PSCCH or the release of the semi-static PSSCH and the monitoring opportunity of the serving cell and the downlink control channel of the downlink control information DCI related to the PSSCH/PSCCH; DCI for scheduling PSSCH reception or semi-static PSSCH release; a downlink control channel PDCCH for bearing DCI information; psch/PSCCH reception or release of semi-static PSCCHs.

And S102, receiving second scheduling information at a second time, wherein the second scheduling information is used for indicating the terminal equipment to send a second time-frequency resource of a second channel, the second scheduling information carries a second allocation indication, and the second channel is used for feeding back HARQ information of downlink data or sidestream data.

When the embodiment of the invention is applied to the HARQ feedback scenes of different data, the second allocation indication can have different design modes.

1) And under the scene of downlink data HARQ feedback, the first allocation indication is an indication domain in the first scheduling information, and the value of the indication domain represents the number of downlink scheduling needing to send corresponding HARQ feedback information on the first time-frequency resource. And the second channel is used for feeding back downlink data, for example, the second channel is a PDCCH, and the second scheduling information is a DL grant. The second allocation indication carried in the DL grant may be a DAI, and is used to count downlink data that needs to be subjected to HARQ feedback. It should be understood that the type of DAI here may be a total DAI or a counter DAI, and the embodiment of the present invention is not limited here. For example, in a single carrier scenario, only the counter DAI is included in the DL grant. For example, in a multi-carrier scenario, the DL grant may include both the counter DAI and the total DAI.

2) And under the HARQ feedback scene of the side row data, the first allocation indication is an indication field in the first scheduling information, and the value of the indication field indicates the number of side row scheduling needing to send corresponding HARQ feedback information on the first time-frequency resource. The second channel is used for feeding back the sidelink data, for example, the second channel may be a Physical Uplink Control Channel (PUCCH), and the second scheduling information is a SL grant. The second allocation indication carried in the SL grant is a Sideline Allocation Indicator (SAI) and is used for counting the sideline scheduling that needs to be subjected to HARQ feedback. It should be understood that the type of SAI here may be a count SAI (counter SAI), which indicates how many sidelink schedules have been transmitted/scheduled by the current serving cell and PDCCH monitoring opportunity or currently transmitted/scheduled to the several sidelink schedules, or may be a total SAI, which indicates the total number of sidelink schedules that need to be fed back in one HARQ feedback window, or the number of HARQ information that needs to be fed back, or the number of HARQ bits that need to be multiplexed. It should be noted that, in the implementation, the SAI may also be defined by other names (or expressed by other terms), and any term that has the same or similar function as the SAI defined in the embodiment of the present invention is within the protection scope of the present invention, and the embodiment of the present invention does not limit the specific expression form of the SAI.

One HARQ feedback window may be understood as a set of downlink slots corresponding to HARQ information that needs to be fed back on one PUCCH resource in one slot or sub-slot scheduled by the base station, or a set of several continuous or discontinuous uplink slots, where HARQ information carried by different PUCCH resources in the set of uplink slots may be multiplexed on one PUCCH resource for feedback. The uplink and downlink timeslot sets may be configured through a high-level signaling, such as a radio resource control RRC signaling, or may be indicated through a dynamic signaling, such as DCI, based on the configuration of the high-level signaling.

3) And considering that the HARQ feedback scene is required to be carried out in both downlink scheduling and sideline scheduling.

One possible design is: the first allocation indication is two indication fields in the first scheduling information, one of the two indication fields indicates the number of downlink schedules which need to send corresponding HARQ feedback information on the first time-frequency resource, and the other indication field indicates the number of sideline schedules which need to send corresponding HARQ feedback information on the first time-frequency resource. And the second scheduling information may be a DL grant or a SL grant, and the second allocation indication may be a DAI or SAI.

Another possible design is: the first allocation indication is an indication field in the first scheduling information, and a value of the indication field indicates the total number of downlink scheduling and side-line scheduling which need to send corresponding HARQ feedback information on the first time-frequency resource. The second scheduling information may be a DL grant or a SL grant, the second allocation indication is a hybrid allocation indication (MAI) used for counting the downlink scheduling and the sidelink scheduling that need to perform HARQ feedback, and the counting sequence may be sorted according to an ascending order of serving cell indexes and then according to an ascending order of PDCCH monitoring opportunities. It should be understood that MAI here may be a count MAI (counter MAI) indicating how many uplink scheduling and downlink scheduling (downlink scheduling and uplink scheduling joint count) have been transmitted/scheduled by the current serving cell and PDCCH monitoring opportunity, or may be a total MAI (total MAI) indicating the total number of downlink scheduling and uplink data that need to be fed back in one HARQ feedback window, or the number of bits of HARQ information that needs to be fed back, or the number of HARQ bits that need to be multiplexed. It should be noted that, in the implementation, MAI may be defined by other names (or expressed by other terms), and any expression having the same or similar function as MAI defined in the embodiment of the present invention is within the protection scope of the present invention, and the embodiment of the present invention does not limit the specific expression form of MAI.

It should be understood that the downlink HARQ information feedback and the sidelink HARQ information feedback may be located on different PUCCH resources, as shown in fig. 2B, the downlink HARQ information feedback is on PUCCH _1, and the sidelink HARQ information feedback is on PUCCH _ 2.

In some possible designs, the receiving of the second scheduling information at the second time may refer to that the DL grant (or SL grant) is the last DL grant (or SL grant) of all DL grants (or SL grants) feeding back HARQ information on the second time-frequency resource, and the determination manner of the precedence order of the DL grants (or SL grants) may be obtained by sorting according to the ascending order of serving cell (serving cell) indexes and then the ascending order of PDCCH monitoring indexes.

S103, when the preset condition is met, comparing the values of the first allocation indication and the second allocation indication, determining the HARQ information needing to be fed back by using the first allocation indication or the second allocation indication, and sending the HARQ information needing to be fed back on the first time-frequency resource.

The preset condition may be that the first time-frequency resource and the second time-frequency resource collide, for example, the resources overlap in a time domain, for example, the first time-frequency resource and the second time-frequency resource are located in the same time window, as long as the preset condition meets the requirement that HARQ information that should originally be sent on the second time-frequency resource needs to be multiplexed onto the first time-frequency resource for sending, which is not limited in the embodiment of the present invention.

In the embodiment of the present invention, there may be multiple ways in which the first time-frequency resource and the second time-frequency resource overlap in the time domain, and as long as at least one OFDM symbol is the same in the time domain, the first time-frequency resource and the second time-frequency resource may be considered to overlap in the time domain. The first, the first time frequency resource and the second time frequency resource partially overlap in the time domain, for example, fig. 4A; in the second type, the first time-frequency resource and the second time-frequency resource are completely overlapped in the time domain, for example, fig. 4B.

It should be understood that the first time-frequency resource and the second time-frequency resource are located in different serving cells or carriers, and the different serving cells or carriers have different subcarrier spacings SCS, so that the first time-frequency resource and the second time-frequency resource are considered to be overlapped in the time domain as long as one symbol is the same in the time domain position in the time domain regardless of the symbol corresponding to any subcarrier, for example, fig. 4C; .

In the following, taking the first scheduling information as UL grant and the second scheduling information as DL grant as an example, a specific scheme for determining HARQ information that needs to be fed back by comparing values of the first allocation indication and the second allocation indication is described.

1) In a single carrier scenario, if the DL grant includes only the counter DAI, the value of the counter DAI in the DL grant and the value of the total DAI in the UL grant may be compared to determine which DAI is used to generate the HARQ codebook.

Exemplarily, if the total DAI in the UL grant is greater than or equal to the counter DAI in the DL grant, the HARQ codebook is generated based on the total DAI in the UL grant, that is, when the terminal device correctly resolves the release of the PDSCH or the semi-static PDSCH and passes CRC check, an ACK is generated, and if the release of the PDSCH or the semi-static PDSCH does not correctly resolve or passes CRC check, a NACK is fed back; generating a NACK for a PDSCH corresponding to a discontinuous DAI value in the counter DAI, for example, if the downlink scheduling received by the terminal device includes counter DAI ═ 6 and counter DAI ═ 8, and if the scheduling of counter DAI ═ 7 is not received, feeding back a NACK for the downlink scheduling when counter DAI ═ 7; further, the terminal device successfully receives the NACK of the partial difference between the counter DAI value and the total DAI in the second scheduling information, for example, if the counter DAI received in the second scheduling information is 6 and the total DAI value is 8, the corresponding DAI is 7 and 8, the NACK is a downlink scheduling feedback NACK. And after generating the codebook, multiplexing the HARQ information to the PUSCH. And if the total DAI in the UL grant is less than the counter DAI in the DL grant, generating an HARQ codebook based on the counter DAI in the DL grant, and multiplexing HARQ information on the PUSCH.

2) In a multi-carrier scenario, the DL grant may include both a counter DAI and a total DAI, and at this time, the total DAI in the DL grant may be compared with the total DAI in the UL grant to determine which DAI value to perform codebook generation according to.

Illustratively, if the total DAI in the UL grant is larger than or equal to the total DAI in the DL grant, the HARQ codebook is generated based on the total DAI in the UL grant, and the HARQ information is multiplexed onto the PUSCH. If the total DAI in the UL grant is less than the total DAI in the DL grant, the HARQ codebook is generated based on the total DAI in the DL grant and the HARQ information is multiplexed onto the PUSCH, or the PUSCH is dropped and the HARQ codebook is generated using the total DAI in the DL grant and the HARQ information is transmitted only on the PUCCH.

As an optional implementation manner, an indication field may be set in the UL grant to indicate whether the UE needs to consider whether the subsequent scheduling still performs multiplexing on the scheduled PUSCH of the grant after receiving the indication field value. For example, the first scheduling information may carry a first indication field, and when a value of the first indication field is a first preset value, it is characterized that new scheduling information is still available after the first time, and HARQ feedback corresponding to the new scheduling information needs to be sent on the first time-frequency resource. For example, when the value of the first indication field is "1", it indicates that HARQ feedback corresponding to a subsequently scheduled PDSCH overlaps with a PUSCH, then HARQ information needs to be multiplexed onto the PUSCH; when the value of the indication field is "0", it indicates that HARQ feedback corresponding to the subsequently scheduled PDSCH overlaps with the PUSCH, the HARQ information does not need to be multiplexed, or the subsequently scheduled PDSCH does not need to perform HARQ feedback.

In the above scheme, the HARQ information to be fed back is determined by comparing the values of the first allocation indication and the second allocation indication, and then the HARQ information scheduled by the second scheduling information and/or corresponding to the sidelink scheduling after the first scheduling information is multiplexed onto the first time-frequency resource indicated by the first scheduling information, so as to achieve fast and accurate transmission.

Example two

Please refer to fig. 5, which is a flowchart illustrating another HARQ information transmission method according to an embodiment of the present invention, the method includes:

s201, the terminal device receives first scheduling information at a first time, where the first scheduling information is used to instruct the terminal device to send a first time-frequency resource of a first channel, and the first scheduling information carries a first allocation instruction.

For a specific implementation manner of step S201, reference may be made to the specific implementation manner of step S101 in the first embodiment, and details are not described here again.

And S202, receiving second scheduling information at a second time, wherein the second scheduling information is used for indicating the terminal equipment to send a second time-frequency resource of a second channel, the second scheduling information carries a second allocation indication, and the second channel is used for feeding back HARQ information of downlink data or sidestream data.

For a specific implementation manner of step S202, reference may be made to the specific implementation manner of step S102 in the first embodiment, and details are not described here.

And S203, when the preset condition is met, the terminal equipment receives third scheduling information at a third moment, the third scheduling information carries a third allocation indication, the first allocation indication is updated through the third allocation indication, and the terminal equipment determines HARQ information needing to be fed back based on the third allocation indication.

In the embodiment of the present invention, when the third scheduling information satisfies at least one of the following conditions, it is determined that the third scheduling information is to update the content of the previous first scheduling information:

1) the third scheduling information and the first scheduling information have the same HARQ process number.

2) And a New Data Indicator (NDI) in the third scheduling information is not flipped.

3) And the resource indication information in the third scheduling information is the same as the resource indication information in the first scheduling information.

That is, the first scheduling information indicates that the first time-frequency resource used by the terminal device to transmit the first channel and the third scheduling information indicates that the third time-frequency resource used by the terminal device to transmit the first channel are the same, and a Modulation and Coding Scheme (MCS) indicated by the first scheduling information is also the same as an MCS indicated by the third scheduling information. In addition, if the configuration is based on a codebook, the first scheduling information and the third scheduling information indicate that the codebook type is also identical.

Wherein, the meaning that the time frequency resources are the same includes that the time domain resources are the same and the frequency domain resources are the same. In some possible designs, the value of the HARQ feedback slot indication K of the first scheduling information indication₁Value K of HARQ feedback time slot indication capable of being indicated by third scheduling information₂Different but K₁、K₂The indicated time slots are the same. At this time, K can be ignored₂The value is determined by merely determining whether the time-frequency resource size or the number of the scheduled time-domain symbols is the same as the number of the Physical Resource Blocks (PRBs), so that the third scheduling information is to update the content of the previous first scheduling information (including updating the first allocation indication).

4) And an indication field is added in the third scheduling information to indicate that the third scheduling information is used for updating the content of the previous first scheduling information. For example, the third scheduling information includes a second indication field.

One possible design is: and if the second indication field is overturned, the third scheduling information is considered to update the content of the previous first scheduling information. For example, the value of the second indication field in the first scheduling information is 0, and the value of the second indication field in the third scheduling information is 1; or, the value of the second indication field in the first scheduling information is 1, and the value of the second indication field in the third scheduling information is 0.

Another possible design is: and if the value of the second indication field is a second preset value, the third scheduling information is considered to update the content of the previous first scheduling information. For example, a second indication field of "1" indicates that the UL grant is updated, and a second indication field of "0" indicates that the newly scheduled UL grant is updated, that is, the third scheduling information is used for scheduling new uplink data.

As an optional implementation manner, when the UL Grant _2 updates the content of the UL Grant _1, the updated content may include:

1) UL Grant _1 is DCI format 0_1, and updated UL Grant _2 may be DCI format 0_ 1.

2) And updating the DAI value carried in the UL Grant _ 1.

One possible design is that the value of the DAI carried in the UL Grant _1 needs to include both the number of all downlink data included in the UL Grant _1 and the number of downlink data scheduled by the network device before the UL Grant _2 after the UL Grant _ 1.

3) UL Grant _1 is DCI format 0_1, and updated UL Grant _2 may be DCI format 0_ 0.

One possible design is to reuse the indication field in DCI format 0_0 to carry the value of the new DAI. For example, all or part of the bits of the "modulation and coding scheme" indication field in DCI format 0_0 may be reused to carry the value of the new DAI. The value of the new DAI may be the number of downlink data scheduled by the network device after the UL grant _1 and before the UL grant _2, or may include the number of all downlink data included in the UL grant _1 and the number of downlink or sideline scheduling scheduled by the network device after the UL grant _1 and before the UL grant _2, which is not limited in this embodiment of the present invention. In this design, it can be considered that the MCS value does not change for the resource size and location indicated in the updated Grant, and the UE can determine according to the MCS value in the first UL Grant _ 1.

Further, the terminal device determines the HARQ information needing to be fed back based on the third allocation indication, and multiplexes the HARQ information on the first resource for transmission.

Illustratively, the first scheduling information is a UL grant and the second scheduling information is a UL grant. Referring to fig. 6, the network device transmits UL grant _1 in slot n-1 (i.e. the first time), a downlink scheduling DL grant is issued in a time slot n (i.e. the second time instant) to schedule PDSCH 2, when detecting that the second time-frequency resource of the HARQ information corresponding to PDSCH _2 and the first time-frequency resource of the PUSCH data scheduled by UL grant _1 overlap or are located within the same time window (as shown in fig. 6, overlap in slot n + 2), issuing updated UL grant _2 (i.e. third scheduling information) in a time slot n +1 (after a second time) to reconfigure the PUSCH scheduled before, generating an HARQ codebook by the terminal device according to a third allocation indication in the newly issued UL grant _2, and transmitting the generated HARQ codebook on a first time frequency resource, therefore, the purpose of multiplexing HARQ information corresponding to downlink scheduling after the UL grant on the PUSCH is achieved.

According to the scheme, when the first time-frequency resource and the second time-frequency resource conflict, the value of the first allocation indication in the previous first scheduling information is updated by issuing the new third scheduling information so as to meet the generation of the multiplexing HARQ codebook, further, the HARQ information corresponding to the downlink scheduling and/or the sidestream scheduling after the UL grant is timely and accurately fed back to the network equipment, and the flexibility and the reliability of communication are improved.

In an alternative embodiment, the terminal device determines, based on the third allocation indication, HARQ information that needs to be fed back, and may also send the HARQ information on a new time-frequency resource (third time-frequency resource) instead of multiplexing the HARQ information on the first time-frequency resource, where resource indication information in the third scheduling information is different from resource indication information in the first scheduling information, that is, the third scheduling information indicates the terminal device to send the HARQ information on the new time-frequency resource, so as to avoid multiplexing due to resource collision.

For example, referring to fig. 7, the UL grant _2 may be used to schedule the original PUSCH and schedule the PUSCH that should be originally transmitted in the slot n +2 to the slot n +3 for transmission, so as to avoid resource collision with the PUCCH, thereby causing multiplexing.

For other updated contents of the third scheduling information, reference may be made to the implementation manner of the updated contents described above, which is not described herein again. For example, the time-frequency resources indicated by the new scheduling information UL Grant _2 in fig. 7 are different from the time-frequency resources indicated by UL Grant _1, but the NDI in UL Grant _2 may still remain unchanged, and the HARQ process number may also remain unchanged, but the resources are changed. Correspondingly, the MCS may also change, and at this time, the terminal device may use a new time-frequency resource indicated by the new UL Grant _2 for sending the PUSCH data, where the new time-frequency resource is not overlapped with the first time-frequency resource or is located in the same time window. On the other hand, for the convenience of identification implementation, in this embodiment, the grant update indication field (i.e., the second indication field) carried in the UL grant _2 can be understood as cancellation of the UL grant _1 or cancellation of the resource scheduled by the UL grant _1 last time.

In the embodiment, when the first time-frequency resource conflicts with the second time-frequency resource, the uplink data is scheduled to the new time-frequency resource which does not conflict with the second time-frequency resource by sending the new third scheduling information, so that multiplexing caused by resource conflict can be avoided, and the flexibility and reliability of communication are improved.

EXAMPLE III

Please refer to fig. 8, which is a flowchart of another HARQ information transmission method according to an embodiment of the present invention, where the method includes:

s301, the terminal device receives first scheduling information at a first time, where the first scheduling information is used to instruct the terminal device to send a first time-frequency resource of a first channel, and the first scheduling information carries a first allocation indication, and the first allocation indication includes a first allocation indication part and a second allocation indication part.

The first allocation indication may be a DAI, an SAI, or an MAI, which is not limited herein. The first allocation indication part is used for indicating the number of downlink scheduling and/or side-line scheduling which are scheduled before the first time and need to send the corresponding HARQ feedback information on the first time-frequency resource, and the second allocation indication part is used for indicating the number of downlink scheduling and/or side-line scheduling which can be scheduled after the first time and need to send the corresponding HARQ feedback on the first time-frequency resource.

Exemplarily, assuming that the first scheduling information is DCI format 1_1, the first allocation indication may be a DAI. The DAI in the DCI format 1_1 may be divided into two parts, namely a first allocation indication part and a second allocation indication part, which are actual DAI (actual DAI), and potential DAI (potential DAI), respectively, where the actual DAI represents the number of actually scheduled PDSCHs, and the potential DAI represents the number of PDSCHs that the network device may subsequently transmit and expect the UE to feedback at most. For example, as shown in fig. 9, the total DAI includes 4 bits, where the Most Significant Bit (MSB)2 bits (bits) is an actual total DAI (actual total DAI) indicating the number of downlink or sidelink scheduling actually scheduled, and the Least Significant Bit (LSB)2 bits is a potential total DAI (potential total DAI) indicating the number of downlink or sidelink scheduling that the network device may send and expect the UE to feedback at most.

In a possible design, in combination with the foregoing embodiment, considering HARQ feedback of downlink data and a HARQ feedback scenario of sidelink data at the same time, the first allocation indicating part may be further divided into two indication fields, which are respectively used to indicate the number of downlink schedules actually scheduled and the number of sidelink schedules actually scheduled, and similarly, the second allocation indicating part may also be further divided into two indication fields, which are respectively used to indicate the number of downlink schedules that the network device may subsequently transmit and expect that the UE may feedback at most and the number of sidelink schedules that the network device may subsequently transmit and expect that the UE may feedback at most.

And S302, receiving second scheduling information at a second time, wherein the second scheduling information is used for indicating the terminal equipment to send a second time-frequency resource of a second channel, the second scheduling information carries a second allocation indication, and the second channel is used for feeding back HARQ information of downlink data or sidestream data.

For a specific implementation manner of step S302, reference may be made to the specific implementation manner of step S102 in the first embodiment, and details are not described here.

It should be understood that, in the specific implementation, after step S301 is executed, step S302 may not be executed, and step S303 may be directly executed.

S303, determining the HARQ information needing to be fed back based on the first allocation indication, and sending the HARQ information on the first time-frequency resource.

Specifically, if the value of the second allocation indication is smaller than the value of the first allocation indication part, determining HARQ information that needs to be fed back based on the first allocation indication part or the first allocation indication; and if the value of the second allocation indication is greater than or equal to the value of the first allocation indication part, determining the HARQ information needing to be fed back based on the first allocation indication.

Illustratively, the first scheduling information is UL grant, the second scheduling information is DL grant, and DAI in the UL grant is total DAI. After receiving the DL grant, the terminal equipment firstly generates a first part of HARQ codebook according to the actual total DAI in the total DAI, and then generates a second part of HARQ codebook according to the potential total DAI in the total DAI.

Taking the HARQ feedback scenario of the downlink data as an example, the specific method for generating the HARQ codebook corresponding to the downlink data may include the following three cases:

firstly, the number of downlink schedules actually received by the terminal equipment, or the DAI value in the last DL grant is less than or equal to the actual total DAI value, then the terminal equipment feeds back corresponding ACK/NACK according to the downlink scheduling situation actually received, and the NACK is supplemented at the insufficient place. And then generating a second partial codebook according to the potential total DAI, wherein the second partial codebook can comprise two processing modes: 1) and the terminal equipment does not receive the PDSCH of any potential, the whole potential part does not feed back, and the second part codebook is not generated. As shown in fig. 10A, if counter DAI is 3 smaller than the actual total DCI, a codebook is generated only according to the actual portion, and the last codebook (codebook) may be { Ack, Nack, Ack, Nack }; 2) and generating a codebook so that all potential PDSCHs are NACK. As shown in fig. 10B, if the counter DAI is 3 smaller than the actual total DCI, a codebook is generated only from two DAIs in the first allocation indication, and the final codebook may be { Ack, Nack }.

Secondly, the number of PDSCHs actually received by the terminal device, or the DAI value in the DL grant, is greater than the value of active total DAI and less than or equal to the total DAI (i.e. the sum of active total DAI and potential total DAI), then the terminal device generates a codebook according to the total DAI: and generating a first part codebook according to the actual total DAI, generating a second part HARQ codebook according to the potential total DAI, and feeding back NACK if the number of the HARQ codebooks is insufficient. As in fig. 10C.

Thirdly, the number of PDSCHs actually received by the terminal equipment, or the DAI value in the DL grant is larger than the total DAI value, then the terminal equipment generates a codebook according to the total DAI: and generating a first part of codebook according to the actual total DAI, generating a second part of HARQ codebook according to the number of PDSCHs corresponding to the prior potential total DAI value, and not feeding back PDSCHs exceeding the DAI value. As shown in fig. 10D.

As an optional implementation manner, after determining the HARQ information, the terminal device may further map the HARQ information determined by the first allocation indicating part to a first part of time-frequency resources in the first time-frequency resources, and map the HARQ information determined by the second allocation indicating part to a second part of time-frequency resources in the first time-frequency resources. In this way, the network device (e.g., the base station) may obtain HARQ information corresponding to downlink scheduling or sidelink scheduling before UL grant scheduling from the first portion of time-frequency resources in the first time-frequency resources, and obtain HARQ information corresponding to downlink scheduling or sidelink scheduling after UL grant scheduling from the second portion of time-frequency resources in the first time-frequency resources. As shown in fig. 11, the two part codebooks may be mapped separately, a first part HARQ codebook is mapped to a first symbol after a demodulation reference signal (DMRS), and a second part HARQ codebook is mapped after the mapping is completed.

According to the scheme, the first allocation indication in the first scheduling information respectively comprises the first allocation indication part and the second allocation indication part, so that when the terminal equipment determines the HARQ information needing to be fed back based on the first allocation indication, the codebook of the first part, namely the accuracy of the actually sent downlink scheduling/sidestream scheduling feedback condition, can be at least ensured, meanwhile, a feedback condition is provided for the subsequent downlink scheduling/sidestream scheduling, the problem of codebook confusion caused by the subsequent downlink scheduling/sidestream scheduling can be avoided, a checking function is achieved, and the flexibility and reliability of communication are improved.

The various embodiments described above can be combined with each other to achieve different technical effects.

The following describes the apparatus provided by the embodiment of the present invention with reference to the drawings.

Referring to fig. 12, a first terminal device in the implementation of the present invention includes:

a receiving module 401, configured to receive first scheduling information at a first time, where the first scheduling information is used to instruct a terminal device to send a first time-frequency resource of a first channel, and the first scheduling information carries a first allocation instruction, where the first channel is an uplink shared channel or a sidelink shared channel; receiving second scheduling information at a second time, where the second scheduling information is used to instruct the terminal device to send a second time-frequency resource of a second channel, the second scheduling information carries a second allocation instruction, and the second channel is used to carry HARQ information for feeding back downlink data or sidestream data;

a processing module 402, configured to determine, according to the first allocation indication and the second allocation indication, HARQ information that needs to be fed back when a preset condition is met;

a sending module 403, configured to send HARQ information that needs to be fed back on the first time-frequency resource.

In one possible design, the processing module 402 is configured to: determining HARQ information needing feedback based on the value of the first allocation indication if the value of the first allocation indication is greater than or equal to the value of the second allocation indication;

In one possible design, the receiving module 401 is further configured to: after the second time, before the sending module 403 sends the HARQ information that needs to be fed back on the first time-frequency resource, receiving third scheduling information, where the third scheduling information carries a third allocation indication; the processing module 402 is configured to: when the third allocation indication is used for updating the first allocation indication, determining the HARQ information needing feedback based on the third allocation indication.

In one possible design, the processing module 402 is configured to: if the value of the second allocation indication is smaller than the value of the first allocation indication part, determining HARQ information needing to be fed back based on the first allocation indication part or the first allocation indication; and if the value of the second allocation indication is greater than or equal to the value of the first allocation indication part, determining the HARQ information needing to be fed back based on the first allocation indication.

For a specific implementation manner of the method steps executed by each module in the terminal device, reference may be made to a specific implementation manner of the method steps executed by the terminal device in the foregoing embodiment, and details are not described here again.

Referring to fig. 13, a first network device in an implementation of the present invention includes:

a sending module 501, configured to send first scheduling information at a first time, where the first scheduling information is used to instruct a terminal device to send a first time-frequency resource of a first channel, and the first scheduling information carries a first allocation instruction, where the first channel is an uplink shared channel or a sidelink shared channel; sending second scheduling information at a second time, where the second scheduling information is used to instruct the terminal device to send a second time-frequency resource of a second channel, the second scheduling information carries a second allocation instruction, and the second channel is used to feed back HARQ information of downlink data or sidestream data;

a receiving module 502, configured to receive HARQ information sent by the terminal device on the first time-frequency resource.

In one possible design, the sending module 501 is further configured to: after the second time, before the receiving module 502 receives the HARQ information sent by the terminal device on the first time-frequency resource, sending third scheduling information, where the third scheduling information carries a third allocation indication, and the third allocation indication is used to update the first allocation indication.

In one possible design, the network device further includes a processing module 503, configured to, after the receiving module 502 receives HARQ information sent by the terminal device on the first time-frequency resource, determine, according to the first allocation indicating portion, HARQ information mapped to a first part of the first time-frequency resources, and determine, according to the second allocation indicating portion, HARQ information mapped to a second part of the first time-frequency resources.

For a specific implementation manner of the method steps executed by each module in the network device, reference may be made to a specific implementation manner of the network device when executing the corresponding method steps in the foregoing method embodiment, which is not described herein again.

Referring to fig. 14, for a second terminal device provided in the embodiment of the present invention, the terminal device may include a processor 601, a transmitter 602, and a receiver 603.

The processor 601 may include a Central Processing Unit (CPU) or an Application Specific Integrated Circuit (ASIC), may include one or more Integrated circuits for controlling program execution, may include a hardware Circuit developed using a Field Programmable Gate Array (FPGA), and may include a baseband chip.

The transmitter 602 may be configured to communicate with an external device via a network, such as an ethernet, a wireless access network, a wireless local area network, or a wired network.

The receiver 603 may be used for network communication with external devices, for example, the external devices may be communicated through a network such as an ethernet, a radio access network, a wireless local area network, or a wired network.

Alternatively, the receiver 603 and the transmitter 602 may be one functional module, for example, one functional module may implement both the transmitting function and the receiving function, or may be different sub-modules in one functional module, or the receiver 603 and the transmitter 602 may also be two independent functional modules.

Optionally, the terminal device may further include a memory 604. The number of the memories 604 may be one or more. The Memory 604 may include a Read Only Memory (ROM), a Random Access Memory (RAM), a disk Memory, and the like. The memory 604 may be used for storing program codes required for the processor 601 to perform tasks, and may also be used for storing data and the like. The memory 604 is shown in dashed lines in fig. 5, since it is an optional functional block rather than a mandatory functional block.

The memory 604, the receiver 603 and the transmitter 602 may be connected to the processor 601 via the bus 600 (as an example in fig. 5), or may be connected to the processor 601 via a dedicated connection.

The processor 601 is programmed to solidify the code corresponding to the method shown in the foregoing into the chip, so that the chip can execute the method shown in the foregoing embodiments when running. How to program the processor 601 is well known to those skilled in the art and will not be described herein.

The terminal device may be configured to perform the method performed by the terminal device in the above method embodiment. Therefore, for the functions and the like realized by each unit in the terminal device, reference may be made to the description of the foregoing method, which is not repeated herein.

Referring to fig. 15, a second network device in the embodiment of the present invention may include a processor 701, a transmitter 702, and a receiver 703.

The processor 701 may include a CPU or ASIC, may include one or more integrated circuits for controlling program execution, may include hardware circuits developed using an FPGA, and may include a baseband chip, among others.

The transmitter 702 may be configured to communicate with an external device via a network, such as an ethernet, a wireless access network, a wireless local area network, or a wired network.

The receiver 703 may be used for network communication with an external device, for example, the external device may be communicated with through a network such as an ethernet, a radio access network, a wireless local area network, or a wired network.

Alternatively, the receiver 703 and the transmitter 702 may be one functional module, for example, one functional module may implement both the transmitting function and the receiving function, or may be different sub-modules in one functional module, or the receiver 703 and the transmitter 702 may also be two independent functional modules.

Optionally, the network device may also include a memory 704. The number of the memory 704 may be one or more. Memory 704 may include ROM, RAM, and disk storage, among others. The memory 704 may be used for storing program codes required for the processor 701 to perform tasks, and may also be used for storing data and the like. The memory 704 is shown in dashed lines in fig. 6, since it is an optional functional block rather than a mandatory functional block.

The memory 704, the receiver 703 and the transmitter 702 may be connected to the processor 701 via the bus 700 (as an example in fig. 6), or may be connected to the processor 701 via a dedicated connection.

The processor 701 is programmed to solidify the code corresponding to the method shown in the foregoing description into the chip, so that the chip can execute the method shown in the foregoing embodiments when running. How to program the processor 701 is well known to those skilled in the art and will not be described herein.

The network device may be configured to perform the method performed by the network device in the above method embodiments. Therefore, for the functions and the like realized by each unit in the network device, reference may be made to the description of the foregoing method, which is not repeated herein.

Based on the same technical concept, the embodiment of the invention also provides a communication device, which comprises a processor and a memory, wherein the memory is used for storing computer execution instructions; the processor is configured to execute the computer-executable instructions stored in the memory to cause the communication device to perform the method performed by the terminal device.

Based on the same technical concept, the embodiment of the invention also provides a communication device, which comprises a processor and an interface circuit; the interface circuit is used for receiving code instructions and transmitting the code instructions to the processor; the processor executes the code instructions to perform the method performed by the terminal device.

Based on the same technical concept, the embodiment of the invention also provides a communication device, which comprises a processor and a memory; the memory is used for storing computer execution instructions; the processor is configured to execute computer-executable instructions stored by the memory to cause the communication device to perform the method as described above for execution by a network device.

Based on the same technical concept, the embodiment of the invention also provides a communication device, which comprises a processor and an interface circuit; the interface circuit is used for receiving code instructions and transmitting the code instructions to the processor; the processor executes the code instructions to perform the method described above as being performed by the network device.

Based on the same technical concept, embodiments of the present invention also provide a readable storage medium for storing instructions, which when executed, enable the HARQ information transmission method provided in the embodiments of the present invention to be implemented.

Based on the same technical concept, the embodiment of the invention also provides a system, which comprises the terminal and the network equipment.

Based on the same technical concept, the embodiment of the present invention further provides a chip, where the chip is coupled with a memory, and is configured to read and execute the program instructions stored in the memory, so as to implement the HARQ information transmission method provided in the embodiment of the present invention.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method for transmitting hybrid automatic repeat HARQ information is characterized by comprising the following steps:

receiving first scheduling information at a first time, where the first scheduling information is used to instruct a terminal device to send a first time-frequency resource of a first channel, and the first scheduling information carries a first allocation instruction, where the first channel is an uplink shared channel or a sidelink shared channel;

receiving second scheduling information at a second time, where the second scheduling information is used to instruct the terminal device to send a second time-frequency resource of a second channel, the second scheduling information carries a second allocation instruction, and the second channel is used to carry HARQ information for feeding back downlink data or sidestream data;

when a preset condition is met, determining the HARQ information needing to be fed back according to the first allocation indication and the second allocation indication, and sending the HARQ information needing to be fed back on the first time-frequency resource;

wherein the preset conditions include: the first time frequency resource and the second time frequency resource are overlapped on a time domain; or the time domain position of the first time frequency resource and the time domain position of the second time frequency resource are positioned in the same time window;

wherein determining the HARQ information requiring feedback according to the first allocation indication and the second allocation indication includes:

determining HARQ information needing feedback based on the value of the first allocation indication if the value of the first allocation indication is greater than or equal to the value of the second allocation indication;

2. The method of claim 1, wherein the first allocation indication indicates a number of downlink schedules required to transmit the corresponding HARQ feedback information on the first time-frequency resource and/or a side-row schedule of the corresponding HARQ feedback information;

the second allocation indication is used for indicating the number of downlink scheduling and/or sidelink scheduling which need to send corresponding HARQ feedback information on the second time-frequency resource.

3. The method of claim 2, wherein the first allocation indication is an indication field in the first scheduling information, and a value of the indication field indicates a total number of downlink scheduling and sidelink scheduling for which corresponding HARQ feedback information needs to be transmitted on the first time/frequency resource; the second allocation indication is a hybrid allocation indication, MAI; or,

the first allocation indication is two indication domains in the first scheduling information, a value of one of the two indication domains indicates the number of downlink schedules which need to send corresponding HARQ feedback information on the first time-frequency resource, and a value of the other indication domain indicates the number of side-row schedules which need to send corresponding HARQ feedback information on the first time-frequency resource; the second allocation indication is a downlink allocation indication DAI or a sideline allocation indication SAI.

4. The method of claim 1, wherein the first scheduling information carries a first indication field, and a value of the first indication field is a first preset value; the first preset value is used for indicating that new scheduling information exists after the first time, and HARQ feedback corresponding to the new scheduling information needs to be sent on the first time-frequency resource.

5. The method of claim 1, wherein after the second time, before transmitting the HARQ information requiring feedback on the first time-frequency resource, further comprising:

receiving third scheduling information, wherein the third scheduling information carries a third allocation indication;

when the third allocation indication is used for updating the first allocation indication, determining the HARQ information needing feedback based on the third allocation indication.

6. The method of claim 5,

the third scheduling information satisfies at least one of the following conditions:

the resource indication information in the third scheduling information is the same as the resource indication information in the first scheduling information;

the third scheduling information and the first scheduling information have the same HARQ process number;

the newly transmitted data in the third scheduling information indicates that the NDI is not turned over;

the third scheduling information comprises a second indication domain, and the value of the second indication domain is a second preset value; wherein the second preset value is used to indicate that the third allocation indication in the third scheduling information is used to update the first allocation indication in the first scheduling information.

7. The method of claim 1, wherein the first allocation indication comprises a first allocation indication part and a second allocation indication part, the first allocation indication part being used for indicating a number of downlink schedules and/or sidewise schedules that have been scheduled before the first time instant and require the transmission of corresponding HARQ feedback information on the first time-frequency resources, the second allocation indication part being used for indicating a number of downlink schedules and/or sidewise schedules that may be scheduled after the first time instant and require the transmission of corresponding HARQ feedback on the first time-frequency resources;

if the value of the second allocation indication is smaller than the value of the first allocation indication part, determining HARQ information needing to be fed back based on the first allocation indication part or the first allocation indication;

and if the value of the second allocation indication is greater than or equal to the value of the first allocation indication part, determining the HARQ information needing to be fed back based on the first allocation indication.

8. The method of claim 7, wherein before transmitting the HARQ information requiring feedback on the first time-frequency resource, further comprising:

and according to the HARQ information determined by the first allocation indicating part, mapping to a first part of time-frequency resources in the first time-frequency resources, and according to the HARQ information determined by the second allocation indicating part, mapping to a second part of time-frequency resources in the first time-frequency resources.

9. A method for transmitting hybrid automatic repeat HARQ information is characterized by comprising the following steps:

sending first scheduling information at a first time, wherein the first scheduling information is used for indicating a terminal device to send a first time-frequency resource of a first channel, the first scheduling information carries a first allocation indication, and the first channel is an uplink shared channel or a side-line shared channel;

sending second scheduling information at a second time, where the second scheduling information is used to instruct the terminal device to send a second time-frequency resource of a second channel, the second scheduling information carries a second allocation instruction, and the second channel is used to feed back HARQ information of downlink data or sidestream data;

when a preset condition is met, receiving HARQ information sent by the terminal equipment on the first time-frequency resource;

wherein the preset conditions include: the first time frequency resource and the second time frequency resource are overlapped on a time domain; or the time domain position of the first time frequency resource and the time domain position of the second time frequency resource are positioned in the same time window.

10. The method of claim 9, wherein the first allocation indication indicates a number of downlink schedules required to transmit the corresponding HARQ feedback information on the first time-frequency resource and/or a side-row schedule of the corresponding HARQ feedback information;

11. The method of claim 10, wherein the first allocation indication is an indication field in the first scheduling information, a value of the indication field indicating a total number of downlink scheduling and sidelink scheduling for which corresponding HARQ feedback information needs to be transmitted on the first time-frequency resource; the second allocation indication is a hybrid allocation indication, MAI; or,

12. The method of claim 9, wherein the first scheduling information carries a first indication field, and a value of the first indication field is a first preset value; the first preset value is used for indicating that new scheduling information exists after the first time, and HARQ feedback corresponding to the new scheduling information needs to be sent on the first time-frequency resource.

13. The method of claim 9, wherein after the second time instant, prior to receiving HARQ information transmitted by the terminal device on the first time-frequency resources, further comprising:

and sending third scheduling information, wherein the third scheduling information carries a third allocation indication, and the third allocation indication is used for updating the first allocation indication.

14. The method of claim 13, wherein the third scheduling information satisfies at least one of the following conditions:

15. The method of claim 9, wherein the first allocation indication comprises a first allocation indication part and a second allocation indication part, the first allocation indication part being used for indicating a number of downlink schedules and/or sidewise schedules that have been scheduled before the first time and require transmission of corresponding HARQ feedback information on the first time-frequency resources, the second allocation indication part being used for indicating a number of downlink schedules and/or sidewise schedules that may be scheduled after the first time and require transmission of corresponding HARQ feedback on the first time-frequency resources.

16. The method of claim 15, wherein after receiving HARQ information transmitted by the terminal device on the first time-frequency resource, further comprising:

determining HARQ information mapped on a first part of time-frequency resources in the first time-frequency resources according to the first allocation indicating part, and determining HARQ information mapped on a second part of time-frequency resources in the first time-frequency resources according to the second allocation indicating part.

17. A terminal device, comprising:

a receiving module, configured to receive first scheduling information at a first time, where the first scheduling information is used to instruct a terminal device to send a first time-frequency resource of a first channel, and the first scheduling information carries a first allocation instruction, where the first channel is an uplink shared channel or a sidelink shared channel; receiving second scheduling information at a second time, where the second scheduling information is used to instruct the terminal device to send a second time-frequency resource of a second channel, the second scheduling information carries a second allocation instruction, and the second channel is used to carry HARQ information for feeding back downlink data or sidestream data;

a processing module, configured to determine, according to the first allocation indication and the second allocation indication, HARQ information that needs to be fed back when a preset condition is met;

a sending module, configured to send HARQ information that needs to be fed back on the first time-frequency resource;

wherein the processing module is configured to:

18. The terminal device of claim 17, wherein the first allocation indication indicates a downlink scheduling for which the corresponding HARQ feedback information needs to be transmitted on the first time-frequency resource and/or a number of side-row scheduling for the corresponding HARQ feedback information;

19. The terminal device of claim 18, wherein the first allocation indication is an indication field in the first scheduling information, and a value of the indication field indicates a total number of downlink scheduling and sidelink scheduling for which corresponding HARQ feedback information needs to be transmitted on the first time/frequency resource; the second allocation indication is a hybrid allocation indication, MAI; or,

20. The terminal device of claim 17, wherein the first scheduling information carries a first indication field, and a value of the first indication field is a first preset value; the first preset value is used for indicating that new scheduling information exists after the first time, and HARQ feedback corresponding to the new scheduling information needs to be sent on the first time-frequency resource.

21. The terminal device of claim 17, wherein the receiving module is further configured to: after the second time, before the sending module sends the HARQ information needing to be fed back on the first time-frequency resource, receiving third scheduling information, where the third scheduling information carries a third allocation indication;

the processing module is used for: when the third allocation indication is used for updating the first allocation indication, determining the HARQ information needing feedback based on the third allocation indication.

22. The terminal device of claim 21,

23. The terminal device of claim 17, wherein the first allocation indication comprises a first allocation indication part and a second allocation indication part, the first allocation indication part being used for indicating a number of downlink schedules and/or sidelink schedules that have been scheduled before the first time and require transmission of corresponding HARQ feedback information on the first time-frequency resources, the second allocation indication part being used for indicating a number of downlink schedules and/or sidelink schedules that may be scheduled after the first time and require transmission of corresponding HARQ feedback on the first time-frequency resources;

wherein the processing module is configured to:

24. The terminal device of claim 23, wherein the terminal device is further configured to:

before the sending module sends the HARQ information needing to be fed back on the first time-frequency resource, the HARQ information determined according to the first allocation indicating part is mapped to a first part of time-frequency resources in the first time-frequency resources, and the HARQ information determined according to the second allocation indicating part is mapped to a second part of time-frequency resources in the first time-frequency resources.

25. A network device, comprising:

a sending module, configured to send first scheduling information at a first time, where the first scheduling information is used to instruct a terminal device to send a first time-frequency resource of a first channel, and the first scheduling information carries a first allocation instruction, where the first channel is an uplink shared channel or a sidelink shared channel; sending second scheduling information at a second time, where the second scheduling information is used to instruct the terminal device to send a second time-frequency resource of a second channel, the second scheduling information carries a second allocation instruction, and the second channel is used to feed back HARQ information of downlink data or sidestream data;

a receiving module to: when a preset condition is met, receiving HARQ information sent by the terminal equipment on the first time-frequency resource;

26. The network device of claim 25, wherein the first allocation indication indicates a number of downlink schedules required to transmit the corresponding HARQ feedback information on the first time-frequency resource and/or a side-row schedule of the corresponding HARQ feedback information;

27. The network device of claim 26, wherein the first allocation indication is an indication field in the first scheduling information, a value of the indication field indicating a total number of downlink scheduling and sidelink scheduling for which corresponding HARQ feedback information needs to be transmitted on the first time-frequency resource; the second allocation indication is a hybrid allocation indication, MAI; or,

28. The network device of claim 25, wherein the first scheduling information carries a first indication field, and a value of the first indication field is a first preset value; the first preset value is used for indicating that new scheduling information exists after the first time, and HARQ feedback corresponding to the new scheduling information needs to be sent on the first time-frequency resource.

29. The network device of claim 25, wherein the sending module is further to:

after the second time, before the receiving module receives the HARQ information sent by the terminal device on the first time-frequency resource, sending third scheduling information, where the third scheduling information carries a third allocation indication, and the third allocation indication is used to update the first allocation indication.

30. The network device of claim 29, wherein the third scheduling information satisfies at least one of the following conditions:

31. The network device of claim 25, wherein the first allocation indication comprises a first allocation indication portion and a second allocation indication portion, the first allocation indication portion indicating a number of downlink schedules and/or sidewise schedules that have been scheduled before the first time and require transmission of corresponding HARQ feedback information on the first time-frequency resources, the second allocation indication portion indicating a number of downlink schedules and/or sidewise schedules that may be scheduled after the first time and require transmission of corresponding HARQ feedback on the first time-frequency resources.

32. The network device of claim 31, wherein the network device further comprises a processing module configured to determine HARQ information mapped to a first portion of the first time-frequency resources according to the first allocation indication portion and determine HARQ information mapped to a second portion of the first time-frequency resources according to the second allocation indication portion after the receiving module receives HARQ information transmitted by the terminal device on the first time-frequency resources.

33. A communication device comprising a processor and a memory;

the memory is used for storing computer execution instructions;

the processor is configured to execute computer-executable instructions stored by the memory to cause the communication device to perform the method of any of claims 1-8.

34. A communication device comprising a processor and interface circuitry;

the interface circuit is used for receiving code instructions and transmitting the code instructions to the processor; the processor executes the code instructions to perform the method of any of claims 1 to 8.

35. A communication device comprising a processor and a memory;

the memory is used for storing computer execution instructions;

the processor is configured to execute computer-executable instructions stored by the memory to cause the communication device to perform the method of any of claims 9 to 16.

36. A communication device comprising a processor and interface circuitry;

the interface circuit is used for receiving code instructions and transmitting the code instructions to the processor; the processor executes the code instructions to perform the method of any of claims 9 to 16.

37. A readable storage medium storing instructions that, when executed, cause the method of any one of claims 1-8 to be implemented.

38. A readable storage medium storing instructions that, when executed, cause the method of any one of claims 9-16 to be implemented.