WO2021035450A1 - Data transmission method and communication device - Google Patents

Abstract

The embodiments of the present application provide a data transmission method and a communication device. The data transmission method comprises: a first communication device receives control information sent by a second communication device, the control information indicating an index of a first HARQ process corresponding to a first data transmission; the first communication device determines the index of the first HARQ process according to the control information; the first communication device determines, according to an end time unit of the control information and a first delay, a start time unit used by the first data transmission, wherein, if the index of the first HARQ process belongs to a first set, the first communication device determines the first delay as being a first numerical value of time units, and if the index of the first HARQ process belongs to a second set, the first communication device determines the first delay as being a first numerical value of time units or a second numerical value of time units, the first set and the second set comprising indices of different HARQ processes; the first communication device receives first data according to the determined start time unit.

Description

Data transmission method and communication equipment Technical field

The embodiments of the present application relate to the communication field, and in particular, to a data transmission method and communication equipment.

Background technique

In the current enhanced machine type communication (eMTC) system, it takes two subframes of time from the completion of receiving the downlink control information to the beginning of the transmission of the downlink data. After the downlink data transmission is completed, the terminal device needs to feed back on the uplink control channel the hybrid automatic repeat request-acknowledgement (HARQ-ACK) information indicating whether the transmission is successful. When the downlink control channel supports 10 HARQ processes or supports HARQ bundling, the HARQ-ACK feedback time of the terminal device is indicated by the HARQ-ACK delay field in the downlink control information. HARQ bundling The number of transport blocks (TB) can be up to 4.

For a system that supports 10 HARQ processes, there is a problem of insufficient resource utilization. For example, downlink control information is transmitted through the machine physical downlink control channel (MPDCCH), and downlink data is transmitted through the physical downlink shared channel (PDSCH). There are two subframe intervals between MPDCCH and PDSCH. N subframes are not used for data transmission, thus causing a waste of resources.

In order to solve the problem of resource waste, 14 HARQ processes are introduced into the downlink control channel. Currently, the scheduling delay from MPDCCH to PDSCH is fixed at 2 subframes, which cannot be used for the scheduling delay from MPDCCH to PDSCH when there are 14 HARQ processes.

Summary of the invention

The embodiments of the present application provide a data transmission method and communication device, which are used to determine the time delay when there are multiple HARQ processes, so as to correctly receive the data sent by the second communication device.

In order to solve the above technical problems, the embodiments of the present application provide the following technical solutions:

In a first aspect, an embodiment of the present application provides a data transmission method, including: a first communication device receives control information sent by a second communication device, wherein the control information indicates a first hybrid automatic repeater corresponding to the first data transmission The index of the HARQ process of the request; the first communication device determines the index of the first HARQ process according to the control information; the first communication device determines the index of the first HARQ process according to the end time unit of the control information and the first delay The start time unit used for the first data transmission, wherein, when the index of the first HARQ process belongs to a first set, the first communication device determines that the first delay is a first numerical time unit When the index of the first HARQ process belongs to the second set, the first communication device determines that the first delay is the first number of time units or the second number of time units, and the first A value is not equal to the second value, and the first set and the second set include indexes of different HARQ processes; the first communication device receives the first data according to the determined start time unit. In the embodiment of the present application, both the first communication device and the second communication device may determine the start time unit used for the first data transmission according to the end time unit and the first delay of the control information, where the first HARQ process When the index belongs to the first set, the first communication device determines that the first delay is the first number of time units. When the index of the first HARQ process belongs to the second set, the first communication device determines that the first delay is the first A number of time units, or a second number of time units, the first value is not equal to the second value, and the first set and the second set include indexes of different HARQ processes. Therefore, the specific value of the first delay can be determined according to whether the index of the first HARQ process belongs to the first set or belongs to the second set. The specific value of the first delay can be determined by the first communication device and the second communication device. The down time delay enables the first communication device to receive the first data correctly, reduces the complexity of the receiving algorithm of the first communication device, and also reduces the complexity of the sending algorithm of the second communication device, improves the flexibility of indication, and reduces Small signaling overhead, while improving the resource utilization of the system.

In a first possible implementation manner, the method further includes: the first communication device receives first information sent by the second communication device, where the first information is used to indicate the status of the first HARQ process The index can or cannot belong to the second set; when the first information indicates that the index of the first HARQ process can belong to the second set, when the index of the first HARQ process belongs to the In the first set, the first communication device determines that the transmission of the first data adopts the asynchronous HARQ mode; when the index of the first HARQ process belongs to the second set, the first communication device determines the first The data transmission adopts synchronous HARQ mode. In the case where the first information indicates that the index of the first HARQ process can belong to the second set, which HARQ method is used for transmission of the first data can be determined by the index of the first HARQ process belonging to the second set, or the index of the first HARQ process It is determined by belonging to the first set. For example, when the index of the first HARQ process belongs to the first set, the transmission of the first data adopts the asynchronous HARQ mode, and when the index of the first HARQ process belongs to the second set, the transmission of the first data adopts synchronous HARQ the way. The second communication device can indicate to the first communication device the HARQ mode adopted for the first data transmission through the value of the index of the first HARQ process, which improves the indication efficiency of the HARQ mode.

In a second aspect, an embodiment of the present application further provides a data transmission method, including: a second communication device determines the index of the first hybrid automatic repeat request HARQ process corresponding to the first data transmission; A communication device sends control information, where the control information indicates the index of the first HARQ process; the second communication device determines the first data transmission according to the end time unit of the control information and the first time delay The starting time unit used, wherein, when the index of the first HARQ process belongs to the first set, the second communication device determines that the first delay is a first numerical time unit, and when the first HARQ process index belongs to the first set, When the index of a HARQ process belongs to the second set, the second communication device determines that the first delay is the first number of time units or the second number of time units, and the first number is not equal to all For the second value, the first set and the second set include indexes of different HARQ processes; the second communication device transmits the first data according to the determined start time unit. In the embodiment of the present application, both the first communication device and the second communication device may determine the start time unit used for the first data transmission according to the end time unit and the first delay of the control information, where the first HARQ process When the index belongs to the first set, the first communication device determines that the first delay is the first number of time units. When the index of the first HARQ process belongs to the second set, the first communication device determines that the first delay is the first A number of time units, or a second number of time units, the first value is not equal to the second value, and the first set and the second set include indexes of different HARQ processes. Therefore, the specific value of the first delay can be determined according to whether the index of the first HARQ process belongs to the first set or belongs to the second set. The specific value of the first delay can be determined by the first communication device and the second communication device. The down time delay enables the first communication device to receive the first data correctly, reduces the complexity of the receiving algorithm of the first communication device, and also reduces the complexity of the sending algorithm of the second communication device, improves the flexibility of indication, and reduces Small signaling overhead, while improving the resource utilization of the system.

In a first possible implementation manner, the method further includes: the second communication device sends first information to the first communication device, where the first information is used to indicate the index of the first HARQ process Can or cannot belong to the second set; when the first information indicates that the index of the first HARQ process can belong to the second set, when the index of the first HARQ process belongs to the first set When the first set of data is set, the second communication device determines that the transmission of the first data adopts asynchronous HARQ; when the index of the first HARQ process belongs to the second set, the second communication device determines that the first data The transmission adopts synchronous HARQ mode. In the case where the first information indicates that the index of the first HARQ process can belong to the second set, which HARQ method is used for transmission of the first data can be determined by the index of the first HARQ process belonging to the second set, or the index of the first HARQ process It is determined by belonging to the first set. For example, when the index of the first HARQ process belongs to the first set, the transmission of the first data adopts the asynchronous HARQ mode, and when the index of the first HARQ process belongs to the second set, the transmission of the first data adopts synchronous HARQ the way. The second communication device can indicate to the first communication device the HARQ mode adopted for the first data transmission through the value of the index of the first HARQ process, which improves the indication efficiency of the HARQ mode.

In a first possible implementation manner, the control information includes: a first field, where, when the index of the first HARQ process belongs to the first set, the first field indicates the HARQ confirmation response delay When the index of the first HARQ process belongs to the second set, the first field includes transmission information of the transport block set, or the first field is a reserved field. In this solution, when the index of the first HARQ process belongs to the first set, the HARQ confirmation response delay is indicated by the first field. Therefore, when the second communication device sends control information, the control information carries the first field, A communication device parses the first field in the control information to obtain the HARQ confirmation response delay, and the first communication device can perform uplink feedback according to the HARQ confirmation response delay. When the index of the first HARQ process belongs to the second set, the HARQ confirmation response delay can be a predefined delay value. For example, the HARQ confirmation response delay can be 13 time units. At this time, the first field in the control information There is no need to transmit the HARQ confirmation response delay. At this time, the first field may be a reserved field, that is, the bit state of the first field is reserved. Or the first field includes the transmission information of the transport block set, and the transport block set may be a transport block set scheduled (or corresponding) by another HARQ process except the first HARQ process in the second set.

In a first possible implementation manner, when the index of the first HARQ process belongs to the second set, the first field includes N bits, and N is a positive integer; The N bits indicate whether each transmission block in the transmission block set is scheduled by means of a bitmap. The first field may include N bits, for example, the value of N may be 3 bits, or 4 bits. The N bits of the first field indicate whether each transport block in the transport block set is scheduled through a bitmap. For example, the first field includes 3 bits, then these 3 bits can indicate 3 of 3 HARQ process scheduling Whether the transmission block is scheduled, where scheduled can be expressed as being transmitted. For example, when a bit of the first field has a value of 0, it means that the transmission block is not scheduled, and when the bit has a value of 1, it means that the transmission block is scheduled.

In a first possible implementation manner, the control information includes: a second field and a third field, wherein, when the higher S bits of the third field indicate the first state, the second field indicates the The second number of time units and the index of the first HARQ process, or the index of the first number of time units and the first HARQ process; and/or, the low T bits of the third field The indicated second state is used to determine the transmission information of the transmission block; wherein, the S and the T are positive integers. In the embodiment of the present application, the second field can indicate the index of the first delay and the first HARQ process at the same time, so that the first communication device can determine the first delay and the first HARQ process by analyzing the second field of the control information. index of. The second state indicated by the low T bits of the third field. The second state is used to determine the transmission information of the transmission block. The transmission block may be a transmission block scheduled by another HARQ process in the second set except the first HARQ process. For example, the second set also includes the index of the second HARQ process, and the transport block set included in the first field refers to the transport block scheduled by the second HARQ process.

In the first possible implementation manner, the value of T is 2, the lower 2 bits of the third field are the first bit and the second bit; the first bit indicates whether the transport block is For scheduling, the second bit indicates that the transmission block is a newly transmitted transmission block or a retransmitted transmission block. As an example, the lower 2 bits of the third field are used to indicate the scheduling information corresponding to the second HARQ process, and the second HARQ process belongs to the second set. The lower 2 bits are used to indicate the scheduling information corresponding to the second HARQ process, including 1 bit indicating whether the second HARQ process is scheduled, and 1 bit indicating NDI.

In the first possible implementation manner, the HARQ confirmation response delay includes: D time units, and the value of D is 13 or 14 or 15 or 17 or 19. Wherein, the HARQ confirmation response delay is a first value, for example, the first value is 13 or 14 or 15 or 17 or 19. At this time, it can be adapted to support multiple HARQ scenarios. When 14HARQ is supported, the first delay from MPDCCH to PDSCH is relatively large, such as 7. As a result, the PDSCH to HARQ-ACK feedback can only be carried in the larger delay On the PUCCH subframe, the value 13 is the first PUCCH subframe that the PDSCH can use. In order to balance the HARQ-ACK information carried by different PUCCHs, the HARQ acknowledgement delay can also be 14, 15, 16, etc. Therefore, HARQ-ACK can be fed back, and the load carried on different PUCCH resources can be relatively balanced.

In a first possible implementation manner, when the first delay is a first numerical time unit, the control information indicates to determine the HARQ confirmation response delay from the first confirmation response delay set; when the When the first delay is a second numerical time unit, the control information indicates that the HARQ acknowledgement delay is determined from the second acknowledgement delay set; wherein, the first acknowledgement delay set and the second acknowledgement delay set The confirmation response delay set includes different HARQ confirmation response delays. In the embodiment of the present application, both the first communication device and the second communication device may predetermine two confirmation response delay sets. For example, the two confirmation response delay sets may be: the first confirmation response delay set and the second confirmation response delay set. The set of acknowledgement response delays, the first set of acknowledgement response delays and the second set of acknowledgement response delays include different HARQ acknowledgement delays. When the first delay is the second number of time units, the index of the first HARQ process belongs to the second set, and the HARQ acknowledgement delay can be determined according to the number of time units of the first delay. Get in. In the embodiment of the present application, the first communication device and the second communication device only need to determine the number of time units included in the first delay to determine the value range of the HARQ confirmation response delay, which simplifies the HARQ confirmation response delay Deterministic complexity.

In the first possible implementation manner, the first confirmation response delay set includes at least one of the following values: 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17; The second confirmation response delay set includes at least one of the following values: 13, 14, 15, 16, 19, 26. In this solution, when the first delay is large, for example, when the first delay is a second number of time units, for example, the first delay is 7 time units, the PDSCH to HARQ-ACK feedback can only be carried in time. On the larger PUCCH subframe, the value 13 is the first PUCCH subframe that the PDSCH can use. In order to balance the HARQ-ACK information carried by different PUCCHs, the values 14, 15, 16, etc. can also be used. Therefore, the HARQ-ACK can be fed back and the load carried on different PUCCH resources can be relatively balanced. When the first delay is small, for example, when the first delay is a first number of time units, for example, when the first delay is 2 time units, the HARQ-ACK feedback delay is also small, and can be more Flexible configuration. Therefore, at this time, the minimum value of the second acknowledgment delay set is greater than the minimum value of the first acknowledgment delay set. The two delays are designed to better adapt to different scheduling delays, thereby increasing different scheduling delays The flexibility of the feedback delay indication.

In a first possible implementation manner, the control information includes: a fourth field, where, when the index of the first HARQ process belongs to the first set, the fourth field indicates the HARQ acknowledgement delay When the index of the first HARQ process belongs to the second set, the fourth field indicates the second number of time units and the HARQ confirmation response delay, or indicates the first number of time The unit and the HARQ acknowledgement response time delay. In this solution, when the index of the first HARQ process belongs to the first set, the HARQ confirmation response delay is indicated by the fourth field. Therefore, when the second communication device sends control information, the control information carries the fourth field. A communication device parses the fourth field in the control information to obtain the HARQ confirmation response delay, and the first communication device can perform uplink feedback according to the HARQ confirmation response delay. When the index of the first HARQ process belongs to the second set, the HARQ confirmation response delay can be a delay value. For example, the HARQ confirmation response delay can be 13 time units. At this time, the fourth field in the control information is used for transmission HARQ acknowledgement response delay. When the index of the first HARQ process belongs to the second set, the fourth field indicates the first delay and HARQ acknowledgement response delay. The first delay can be the first number of time units or The second value is a time unit. In the embodiment of the present application, the fourth field can indicate the first delay and the HARQ confirmation response delay at the same time, so that the first communication device can determine the first delay and the HARQ confirmation response delay by analyzing the fourth field of the control information. .

In the first possible implementation manner, when the index of the first HARQ process belongs to the second set, the fourth field includes Q bits, and the Q is a positive integer; Q bits indicate the first delay in the first delay set, and indicate the HARQ acknowledge response delay in the third acknowledge response delay set; wherein, the first delay set includes at least one of the following Numerical value: 2, P, the P is a positive integer greater than or equal to 7; the third confirmation response delay set includes at least one of the following numerical values: 4, 5, 7, 13. Specifically, the fourth field includes Q bits, the Q bits indicate the first delay in the first delay set, and the first delay set includes at least one of the following values: 2. P, P is a positive value greater than or equal to 7. Integer, P can be pre-defined or high-level configuration. Therefore, the first time delay may be 2 time units, or the first time delay may be 7 time units, or the first time delay may be greater than 7 time units. When 14 HARQ processes are introduced, the minimum first delay is 7 subframes, and when ACK feedback takes up more time, in order to schedule transmission blocks accurately and flexibly, a first delay greater than or equal to 7 needs to be introduced. In addition, In this solution, the meaning of the HARQ process number field is not changed, which has a small impact on the protocol, and the implementation complexity of the first communication device and the second communication device is low.

In the first possible implementation manner, the first set is {0,1,2,3,4,5,6,7,8,9}, and the second set is {10,11,12 ,13}; or, the first set is {0,1,2,3,4,5,6,7,8,9}, and the second set is {12,13,14,15}. Among them, when the index of the HARQ process is 0,1,2,3,4,5,6,7,8,9, the index of the HARQ process belongs to the first set, and the index of the HARQ process is 10,11 At 12, 13, the index of the HARQ process belongs to the second set. In this solution, the index of the HARQ process included in the first set and the index of the HARQ process included in the second set are consecutive, so the first set There are 14 HARQ process indexes added to the second set. The index of the first HARQ process indicated by the control information may belong to the first set or the second set, and the index of the first HARQ process is determined according to the application scenario. Or, when the index of the HARQ process is 0,1,2,3,4,5,6,7,8,9, the index of the HARQ process belongs to the first set, and the index of the HARQ process is 12,13 , 14 and 15, the index of the HARQ process belongs to the second set. In this solution, the index of the HARQ process included in the first set and the index of the HARQ process included in the second set are not continuous, and the first set There are 14 HARQ process indexes added to the second set. The index of the first HARQ process indicated by the control information may belong to the first set or the second set, and the index of the first HARQ process is determined according to the application scenario.

In the first possible implementation manner, the first value is 2 and the second value is 7. In this solution, the specific value of the first delay can be determined according to whether the index of the first HARQ process belongs to the first set or belongs to the second set. The specific value of the first delay is the first communication device and the second set. The time delay that can be determined by the communication device enables the first terminal device to correctly receive the first data, reduces the complexity of the receiving algorithm of the first communication device, and also reduces the complexity of the sending algorithm of the second communication device, and improves the indication Flexibility, reduce signaling overhead, and improve system resource utilization.

In a third aspect, an embodiment of the present application also provides a communication device, the communication device is specifically a first communication device, and the first communication device includes: a processing module and a transceiver module, wherein the transceiver module is configured to receive The control information sent by the second communication device, wherein the control information indicates the index of the first hybrid automatic repeat request HARQ process corresponding to the first data transmission; the processing module is configured to determine the The index of the first HARQ process; the processing module is configured to determine the start time unit used for the first data transmission according to the end time unit and the first delay of the control information, wherein, when the first When the index of the HARQ process belongs to the first set, the first communication device determines that the first delay is a first number of time units, and when the index of the first HARQ process belongs to the second set, the first The communication device determines that the first time delay is the first value time unit or the second value time unit, and the first value is not equal to the second value, and the first set and the second set The set includes indexes of different HARQ processes; the transceiver module is configured to receive the first data according to the determined start time unit.

In a first possible implementation manner, the transceiver module is configured to receive first information sent by the second communication device, and the first information is used to indicate whether the index of the first HARQ process can or cannot Belong to the second set; the processing module is configured to, when the first information indicates that the index of the first HARQ process can belong to the second set, when the index of the first HARQ process belongs to In the first set, it is determined that the transmission of the first data adopts the asynchronous HARQ mode; when the index of the first HARQ process belongs to the second set, it is determined that the transmission of the first data adopts the synchronous HARQ mode.

In the third aspect of the present application, the component modules of the first communication device can also perform the steps described in the first aspect and various possible implementations. For details, see the first aspect and various possible implementations described above. In the description.

In a fourth aspect, an embodiment of the present application further provides a communication device, the communication device is specifically a second communication device, and the second communication device includes: a processing module and a transceiver module, wherein the processing module is configured to determine The index of the first HARQ process of the first hybrid automatic repeat request corresponding to the first data transmission; the transceiver module is configured to send control information to the first communication device, wherein the control information indicates the index of the first HARQ process The processing module is configured to determine the start time unit used for the first data transmission according to the end time unit and the first delay of the control information, wherein, when the index of the first HARQ process belongs to the first When the first set is set, the second communication device determines that the first delay is a first number of time units, and when the index of the first HARQ process belongs to the second set, the second communication device determines the first A delay is the first number of time units or the second number of time units, the first value is not equal to the second value, and the first set and the second set include different HARQ processes Index; the transceiver module is configured to send the first data according to the determined start time unit.

In a first possible implementation manner, the transceiver module is configured to send first information to the first communication device, where the first information is used to indicate whether the index of the first HARQ process can or cannot belong to The second set; the processing module is configured to, when the first information indicates that the index of the first HARQ process can belong to the second set, when the index of the first HARQ process belongs to all In the first set, the transmission of the first data adopts the asynchronous HARQ mode; when the index of the first HARQ process belongs to the second set, the transmission of the first data adopts the synchronous HARQ mode.

In a first possible implementation manner, the control information includes: a first field, where, when the index of the first HARQ process belongs to the first set, the first field indicates the HARQ confirmation response delay When the index of the first HARQ process belongs to the second set, the first field includes transmission information of the transport block set, or the first field is a reserved field.

In a first possible implementation manner, when the index of the first HARQ process belongs to the second set, the first field includes N bits, and N is a positive integer; The N bits indicate whether each transmission block in the transmission block set is scheduled by means of a bitmap.

In a first possible implementation manner, the control information includes: a second field and a third field, wherein, when the higher S bits of the third field indicate the first state, the second field indicates the The second number of time units and the index of the first HARQ process, or the index of the first number of time units and the first HARQ process; and/or, the low T bits of the third field The indicated second state is used to determine the transmission information of the transmission block; wherein, the S and the T are positive integers.

In the first possible implementation manner, the value of T is 2, the lower 2 bits of the third field are the first bit and the second bit; the first bit indicates whether the transport block is For scheduling, the second bit indicates that the transmission block is a newly transmitted transmission block or a retransmitted transmission block.

In the first possible implementation manner, the HARQ confirmation response delay includes: D time units, and the value of D is 13 or 14 or 15 or 17 or 19.

In a first possible implementation manner, when the first delay is a first numerical time unit, the control information indicates to determine the HARQ confirmation response delay from the first confirmation response delay set; when the When the first delay is a second numerical time unit, the control information indicates that the HARQ acknowledgement delay is determined from the second acknowledgement delay set; wherein, the first acknowledgement delay set and the second acknowledgement delay set The confirmation response delay set includes different HARQ confirmation response delays.

In the first possible implementation manner, the first confirmation response delay set includes at least one of the following values: 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17; The second confirmation response delay set includes at least one of the following values: 13, 14, 15, 16, 19, 26.

In a first possible implementation manner, the control information includes: a fourth field, where, when the index of the first HARQ process belongs to the first set, the fourth field indicates the HARQ acknowledgement delay When the index of the first HARQ process belongs to the second set, the fourth field indicates the second number of time units and the HARQ confirmation response delay, or indicates the first number of time The unit and the HARQ acknowledgement response time delay.

In the first possible implementation manner, when the index of the first HARQ process belongs to the second set, the fourth field includes Q bits, and the Q is a positive integer; Q bits indicate the first delay in the first delay set, and indicate the HARQ acknowledge response delay in the third acknowledge response delay set; wherein, the first delay set includes at least one of the following Numerical value: 2, P, the P is a positive integer greater than or equal to 7; the third confirmation response delay set includes at least one of the following numerical values: 4, 5, 7, 13.

In the first possible implementation manner, the first set is {0,1,2,3,4,5,6,7,8,9}, and the second set is {10,11,12 ,13}; or, the first set is {0,1,2,3,4,5,6,7,8,9}, and the second set is {12,13,14,15}.

In the first possible implementation manner, the first value is 2 and the second value is 7.

In the fourth aspect of the present application, the component modules of the second communication device can also perform the steps described in the foregoing second aspect and various possible implementations. For details, see the foregoing description of the second aspect and various possible implementations. In the description.

In the fifth aspect, the embodiments of the present application provide a computer-readable storage medium that stores instructions in the computer-readable storage medium, which when run on a computer, causes the computer to execute the above-mentioned first or second aspect Methods.

In a sixth aspect, embodiments of the present application provide a computer program product containing instructions, which when run on a computer, cause the computer to execute the method described in the first or second aspect.

In a seventh aspect, an embodiment of the present application provides a communication device. The communication device may include entities such as a terminal device or a network device. The communication device includes a processor and a memory; the memory is used to store instructions; By executing the instructions in the memory, the communication device executes the method according to any one of the first aspect or the second aspect.

In an eighth aspect, the present application provides a chip system including a processor for supporting communication devices to implement the functions involved in the above aspects, for example, sending or processing data and/or information involved in the above methods . In a possible design, the chip system further includes a memory, and the memory is used to store program instructions and data necessary for the communication device. The chip system can be composed of chips, and can also include chips and other discrete devices.

It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

In the embodiment of the present application, both the first communication device and the second communication device may determine the start time unit used for the first data transmission according to the end time unit and the first delay of the control information, where the first HARQ process When the index belongs to the first set, the first communication device determines that the first delay is the first number of time units. When the index of the first HARQ process belongs to the second set, the first communication device determines that the first delay is the first A number of time units, or a second number of time units, the first value is not equal to the second value, and the first set and the second set include indexes of different HARQ processes. Therefore, the specific value of the first delay can be determined according to whether the index of the first HARQ process belongs to the first set or belongs to the second set. The specific value of the first delay can be determined by the first communication device and the second communication device. The down time delay enables the first communication device to receive the first data correctly, reduces the complexity of the receiving algorithm of the first communication device, and also reduces the complexity of the sending algorithm of the second communication device, improves the flexibility of indication, and reduces Small signaling overhead, while improving the resource utilization of the system.

Description of the drawings

FIG. 1 is a schematic diagram of the composition architecture of a communication system to which a data transmission method according to an embodiment of the application is applied;

Figure 2 is a schematic diagram of subframes occupied by data transmission and feedback information transmission in a system supporting 10 HARQ processes;

Figure 3 is a schematic diagram of subframes occupied by data transmission and feedback information transmission in a system supporting 14 HARQ processes;

4 is a schematic diagram of an interaction process between a first communication device and a second communication device according to an embodiment of the application;

5 is a schematic diagram of subframes occupied by data transmission and feedback information transmission in a system supporting 14 HARQ processes in an embodiment of the application;

FIG. 6 is a schematic diagram of the composition structure of a first communication device provided by an embodiment of this application;

FIG. 7 is a schematic diagram of the composition structure of a second communication device according to an embodiment of the application;

FIG. 8 is a schematic diagram of the composition structure of a first communication device according to an embodiment of the application;

FIG. 9 is a schematic diagram of the composition structure of a second communication device according to an embodiment of the application.

detailed description

The embodiments of the present application provide a data transmission method and communication device, which are used to determine the time delay when there are multiple HARQ processes, so as to correctly receive the data sent by the second communication device.

The embodiments of the present application will be described below in conjunction with the drawings.

The terms "first" and "second" in the specification and claims of the application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, and this is merely a way of distinguishing objects with the same attribute used in describing the embodiments of the present application. In addition, the terms "including" and "having" and any variations of them are intended to cover non-exclusive inclusion, so that a process, method, system, product, or device that includes a series of units is not necessarily limited to those units, but may include Listed or inherent to these processes, methods, products, or equipment.

The technical solutions of the embodiments of this application can be applied to various data processing communication systems, such as code division multiple access (CDMA), time division multiple access (TDMA), and frequency division multiple access (frequency division multiple access). division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier frequency division multiple access (single carrier FDMA, SC-FDMA) and other systems. The term "system" can be used interchangeably with "network". The CDMA system can implement wireless technologies such as universal terrestrial radio access (UTRA) and CDMA2000. UTRA can include wideband CDMA (wideband CDMA, WCDMA) technology and other CDMA variants. CDMA2000 can cover the interim standard (IS) 2000 (IS-2000), IS-95 and IS-856 standards. The TDMA system can implement wireless technologies such as the global system for mobile communication (GSM). OFDMA system can realize such as evolved universal wireless terrestrial access (evolved UTRA, E-UTRA), ultra mobile broadband (ultra mobile broadband, UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash OFDMA And other wireless technologies. UTRA and E-UTRA are UMTS and UMTS evolved versions. 3GPP is a new version of UMTS that uses E-UTRA in long term evolution (LTE) and various versions based on LTE evolution. The Fifth Generation (5 Generation, "5G") communication system and New Radio ("NR") are the next generation communication systems under study. In addition, the communication system may also be applicable to future-oriented communication technologies, all of which are applicable to the technical solutions provided in the embodiments of the present application. The system architecture and business scenarios described in the embodiments of this application are intended to more clearly illustrate the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. Those of ordinary skill in the art will know that with the network With the evolution of the architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems.

Fig. 1 shows a schematic structural diagram of a possible radio access network (RAN) according to an embodiment of the present application. The RAN may be a base station access system of a 2G network (that is, the RAN includes a base station and a base station controller), or may be a base station access system of a 3G network (that is, the RAN includes a base station and an RNC), or may be 4G The base station access system of the network (that is, the RAN includes eNB and RNC), or may be the base station access system of the 5G network.

The RAN includes one or more network devices. The network device may be any device with a wireless transceiving function, or a chip set in a device with a specific wireless transceiving function. The network equipment includes, but is not limited to: base stations (such as base stations BS, base stations NodeB, evolved base stations eNodeB or eNB, base stations gNodeB or gNB in the fifth generation 5G communication system, base stations in future communication systems, and connections in WiFi systems. Ingress node, wireless relay node, wireless backhaul node), etc. The base station may be: a macro base station, a micro base station, a pico base station, a small station, a relay station, etc. Multiple base stations can support networks of one or more of the aforementioned technologies, or future evolution networks. The core network may support a network of one or more technologies mentioned above, or a future evolved network. The base station may include one or more co-site or non co-site transmission receiving points (transmission receiving points, TRP). The network device may also be a wireless controller, a centralized unit (CU), or a distributed unit (DU) in a cloud radio access network (cloud radio access network, CRAN) scenario. The network device can also be a server, a wearable device, or a vehicle-mounted device. The following description takes the network device as a base station as an example. The multiple network devices may be base stations of the same type, or base stations of different types. The base station can communicate with the terminal equipment 1-6, and can also communicate with the terminal equipment 1-6 through a relay station. The terminal device 1-6 can support communication with multiple base stations of different technologies. For example, the terminal device can support communication with a base station that supports an LTE network, can also support communication with a base station that supports a 5G network, and can also support a base station that supports an LTE network. And the dual connection of the base station of the 5G network. For example, the terminal is connected to the RAN node of the wireless network. At present, some examples of RAN nodes are: gNB, transmission reception point (TRP), evolved Node B (evolved Node B, eNB), radio network controller (RNC), Node B (Node B) B, NB), base station controller (BSC), base transceiver station (BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (baseband unit) , BBU), or wireless fidelity (Wifi) access point (AP), etc. In a network structure, the network device may include a centralized unit (CU) node, or a distributed unit (DU) node, or a RAN device including a CU node and a DU node.

Terminal equipment 1-6, also known as user equipment (UE), mobile station (MS), mobile terminal (MT), terminal, etc., is a way to provide voice and/ Or a device with data connectivity, or a chip set in the device, for example, a handheld device with a wireless connection function, a vehicle-mounted device, etc. At present, some examples of terminal devices are: mobile phones (mobile phones), tablet computers, notebook computers, handheld computers, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented Augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving (self-driving), wireless terminals in remote medical surgery, and smart grid (smart grid) The wireless terminal in the transportation safety (transportation safety), the wireless terminal in the smart city (smart city), the wireless terminal in the smart home (smart home), etc. The terminal device provided in the embodiment of the present application may be a low-complexity terminal device and/or a terminal device in the coverage enhancement A mode.

In the embodiment of the present application, the base station and UE1 to UE6 form a communication system. In the communication system, the base station sends one or more of system information, RAR messages, and paging messages to one or more of UE1 to UE6. In addition, UE4 to UE6 also form a communication system. In this communication system, UE5 can be implemented as a base station. UE5 can send one or more of system information, control information, and paging messages to UE4 and One or more UEs in UE6.

Please refer to FIG. 2, which is a schematic diagram of subframes occupied by data transmission and feedback information transmission in a system supporting 10 HARQ processes. For a system supporting 10 HARQ processes, there is a problem of insufficient resource utilization. M0 to M9 are 10 MPDCCH subframes for scheduling PDSCH, and D0 to D9 are 10 PDSCH subframes for M0 to M9 scheduling. The data blocks D0 to D3 are fed back on the physical uplink control channel (PUCCH) at A0, the data blocks D4 to D7 are fed back at A1, and D8 and D9 are fed back at A2. Since there is an interval of two subframes between MPDCCH and PDSCH, subframes 0 and 1 are not used for data transmission, which causes a waste of resources.

In order to solve the problem of resource waste, please refer to Figure 3. To support 14 HARQ processes in the system for transmitting data and sending feedback information occupied by the subframe schematic diagram, the introduction of 14 HARQ processes in the downlink control channel, M10 to M13 are newly introduced HARQ The scheduling information corresponding to the process. The data scheduled by M10 and M11 are transmitted in subframe 17 and subframe 18, and the HARQ-ACK information of the data scheduled by M10 and M11 is fed back in subframe 20 in the same way. In subframe 17 and subframe 18, since the HARQ process for D10 and D11 has not yet fed back a HARQ acknowledgement (acknowledgement, ACK), scheduling cannot be performed, and two more HARQ processes need to be introduced. In summary, 14 HARQ processes need to be introduced to make full use of resources. Compared with the scenario where 10 HARQ processes are introduced in the downlink control channel, the transmission rate can be increased by 20% in the scenario where the downlink control channel uses 14 HARQ processes.

From the above description, it can be seen that the scheduling delay between M10 and D10 is 7 subframes, where the scheduling delay refers to the time unit from the MPDCCH subframe for scheduling PDSCH to the interval between the PDSCH subframe, for example, the time unit may be a frame , Subframe, or symbol, or effective frame, or effective subframe, or effective symbol, or absolute frame, or absolute subframe, or absolute symbol, or bandwidth-reduced low-complexity and coverage enhancement, BL/CE) sub-frames, etc. The HARQ-ACK delay from D10 to subframe 30 is 13 subframes, among which, the HARQ-ACK delay can also be referred to as the feedback delay. The HARQ-ACK delay refers to the delay from the PDSCH subframe to the feedback of the PDSCH subframe. The time unit of the interval between PUCCH subframes of the feedback information of the data.

At present, the scheduling delay from MPDCCH to PDSCH is fixed at 2 subframes, which cannot be used for the scheduling delay from MPDCCH to PDSCH when there are 14 HARQ processes. Similarly, the time delay from PDSCH to HARQ-ACK feedback is dynamically indicated, but it cannot be adapted to the scenario of 14 HARQ-ACKs.

Currently, as shown in Table 1 below, the HARQ-ACK delay field can also be used to indicate the HARQ process index used and the scheduling delay.

Table 1

HARQ-ACK delay domain in DCI	HARQ ID used	PDSCH subframe scheduling delay
0	10	2
1	10	7
10	11	2
11	11	7
100	12	2
101	12	7
110	13	2
111	13	7

As shown in Table 2 below, the bit states 10 to 15 of the HARQ process number field can also be used to indicate the HARQ confirmation response delay.

Table 2

HARQ-ID field in DCI	HARQ-ACK delay
10	4
11	5
12	7
13	9
14	11
15	13

In this solution, the HARQ-ACK delay field and the HARQ process number field are reinterpreted, which has a great impact on the current communication protocol, and the implementation complexity of network equipment and terminal equipment is relatively high. At the same time, these two fields only indicate HARQ-ACK delay, HARQ process index, and scheduling delay, which are less flexible for signaling use.

In order to solve the problem of indicating the scheduling delay when 14 HARQ processes are introduced in the downlink control channel, an embodiment of the present application proposes a data transmission method, which is suitable for the data transmission scenario of HARQ process scheduling. First, please refer to FIG. 4 , The schematic diagram of the interaction flow between the first communication device and the second communication device provided by the embodiments of this application, for example, the first communication device may be the aforementioned terminal device, and the second communication device may be the aforementioned network device. In the information processing method provided by the embodiment of the present application, the subsequent steps 401 to 404 are described in detail from the side of the second communication device, and the subsequent steps 411 to 414 are described from the side of the first communication device, and mainly include the following steps:

401. The second communication device determines the index of the first HARQ process corresponding to the first data transmission.

In the embodiment of the present application, the first data is the downlink data that the second communication device needs to send to the first communication device. The first data may also be called downlink data, or the first data may also be called data to be sent, for example, A piece of data can be data carried by one or more transport blocks. The first HARQ process corresponding to the first data transmission means that the HARQ process scheduling the first data is the first HARQ process, and the first HARQ process has an index. For example, the index of the first HARQ process may be referred to as the first index. When the second communication device determines that the first data needs to be transmitted to the first communication device, the second communication device first determines the index of the first HARQ process corresponding to the first data transmission, for example, the first HARQ process determined by the second communication device The index can be an index number or an index identifier.

402. The second communication device sends control information to the first communication device, where the control information indicates an index of the first HARQ process.

In the embodiment of the present application, after the second communication device determines the index of the first HARQ process, the second communication device may indicate the index of the first HARQ process to the first communication device. For example, the second communication device may communicate with the first HARQ process. A communication connection is established between a communication device, and the communication connection may be a wired connection or a wireless connection. The second communication device sends control information to the first communication device. The control information may be carried by physical layer signaling. For example, the control information may be downlink control information (DCI), or the control information may be other The signaling used to communicate with the first communication device is not limited here.

Wherein, the control information indicates the index of the first HARQ process. For example, a field in the control information can be used to carry the index of the first HARQ process. This field can be a newly added field in the control information or a reserved field in the control information. A field, or a field transferred in the control information, and the transferred field may use a field originally used for other functions to carry the index of the first HARQ process. The manner in which the control information carries the index of the first HARQ process is not limited. It should be noted that other fields may be included in the control information. For details, please refer to the examples in the subsequent embodiments.

In some embodiments of the present application, in addition to performing step 401 to step 404, the data transmission method provided in the embodiment of the present application may further include the following steps by the second communication device:

The second communication device sends first information to the first communication device, where the first information is used to indicate whether the index of the first HARQ process can or cannot belong to the second set;

In the case where the first information indicates that the index of the first HARQ process can belong to the second set, when the index of the first HARQ process belongs to the first set, the second communication device determines that the transmission of the first data adopts the asynchronous HARQ mode; When the index of a HARQ process belongs to the second set, the second communication device determines that the transmission of the first data adopts the synchronous HARQ mode.

Wherein, the first information is used to indicate whether the index of the first HARQ process can or cannot belong to the second set, and the index of the first HARQ process can belong to the second set means that the first communication device supports that the first HARQ process index belongs to the second set The ability that the index of the first HARQ process cannot belong to the second set is that the first communication device does not support the ability of the first HARQ process index to belong to the second set, that is, the index of the first HARQ process can only belong to the first set at this time. The first information is used to indicate whether the index of the first HARQ process can or cannot belong to the second set, and can also be expressed as: the first information is used to enable or disable the index indicating the first HARQ process from the second set. For example, the first information may be used to enable 14 HARQ, or enable additional HARQ, the second device enables the first device to use more HARQ, or enables the first device to use more than 10 HARQ.

The transmission of the first data can adopt asynchronous HARQ mode or synchronous HARQ mode. Synchronous HARQ can be understood as the retransmission of the previous (or most recent) data transmission interval corresponding to the HARQ process index, which is fixed or predefined. , Or the retransmission is sent at a fixed time after the previous data transmission. It can also be understood that the time interval between data transmission and HARQ-ACK is fixed or predefined, or HARQ-ACK delay is fixed or predefined. Asynchronous HARQ can be understood as the retransmission of the previous (or most recent) data transmission interval corresponding to the HARQ process index is arbitrary or configured by the second communication device, that is, the retransmission can be based on the first (or most recent) data transmission interval. 2. The scheduling of communication equipment occurs at any time. It can also be understood that the time interval between data transmission and HARQ-ACK is configurable or indicated, or HARQ-ACK delay is configurable or indicated. In the case where the first information indicates that the index of the first HARQ process can belong to the second set, which method of transmission of the first data can be determined by the index of the first HARQ process belonging to the second set, or the index of the first HARQ process belonging to The first set is determined. For example, when the index of the first HARQ process belongs to the first set, the transmission of the first data adopts the asynchronous HARQ method, and when the index of the first HARQ process belongs to the second set, the transmission of the first data adopts the synchronous HARQ method. . The second communication device can indicate to the first communication device the HARQ mode adopted for the first data transmission through the value of the index of the first HARQ process, which improves the indication efficiency of the HARQ mode.

In some embodiments of the present application, the control information includes: a first field, in which,

When the index of the first HARQ process belongs to the first set, the first field indicates HARQ-ACK delay;

When the index of the first HARQ process belongs to the second set, the first field includes transmission information of the transport block set, or the first field is a reserved field.

Wherein, when the index of the first HARQ process belongs to the second set, the value of the first delay may be fixed, for example, fixed to 7 or more than 7 time units. The control information includes a first field. The first field can indicate different information according to the value of the index of the first HARQ process. For example, when the index of the first HARQ process belongs to the first set, the first field indicates the HARQ confirmation response. Delay (HARQ-ACK delay), HARQ acknowledgement delay can also be referred to as HARQ feedback delay. It can be understood that for the PDSCH in subframe nk, the first communication device determines that subframe n is used as HARQ-ACK transmission Subframe, where k refers to HARQ-ACK delay. The PDSCH of subframe n-k can also be understood as the last subframe of PDSCH transmission is n-k. The HARQ-ACK transmission subframe can be understood as the first subframe for HARQ-ACK transmission. When the index of the first HARQ process belongs to the first set, the HARQ confirmation response delay is indicated by the first field. Therefore, when the second communication device sends control information, the control information carries the first field, and the first communication device analyzes and controls In the first field of the information, the HARQ confirmation response delay is obtained, and the first communication device can perform uplink feedback according to the HARQ confirmation response delay.

When the index of the first HARQ process belongs to the second set, the HARQ confirmation response delay can be a predefined delay value. For example, the HARQ confirmation response delay can be 13 time units. At this time, the first field in the control information There is no need to transmit the HARQ confirmation response delay. At this time, the first field may be a reserved field, that is, the bit state of the first field is reserved. Or the first field includes the transmission information of the transport block set. The transport block set may be a transport block set scheduled (or corresponding) by another HARQ process in the second set except the first HARQ process. For example, the second set also includes the first HARQ process. 2. Index of the HARQ process, the second HARQ process may be one or HARQ process, and the transmission block set included in the first field refers to the transmission block scheduled by the second HARQ process. Wherein, the transmission information refers to whether the transmission block in the transmission block set is scheduled or whether to transmit each transmission block in the transmission block set.

In some embodiments of the present application, the control information may be DCI, and the first field in the control information may be the HARQ-ACK delay field in the DCI.

In some embodiments of the present application, when the index of the first HARQ process belongs to the second set, the first field includes N bits, and N is a positive integer;

The N bits in the first field indicate whether each transport block in the transport block set is scheduled through a bitmap.

The first field may include N bits, for example, the value of N may be 3 bits, or 4 bits. The N bits of the first field indicate whether each transport block in the transport block set is scheduled through a bitmap. For example, the first field includes 3 bits, then these 3 bits can indicate 3 of 3 HARQ process scheduling Whether the transmission block is scheduled, where scheduled can be expressed as being transmitted. For example, when a bit of the first field has a value of 0, it means that the transmission block is not scheduled, and when the bit has a value of 1, it means that the transmission block is scheduled.

In some embodiments of the present application, the control information includes: a second field and a third field, where:

When the high S bits of the third field indicate the first state, the second field indicates the second number of time units and the index of the first HARQ process, or indicates the first number of time units and the index of the first HARQ process;

and / or,

The second state indicated by the low T bits of the third field is used to determine the transmission information of the transmission block;

Among them, S and T are positive integers.

The control information includes a second field and a third field. The second field can indicate different information according to different bit states of the third field. For example, when the higher S bits of the third field indicate the first state, the second field Indicate the index of the second number of time units and the first HARQ process, or indicate the index of the first number of time units and the first HARQ process, the value of S is not limited, for example, the first state indicated by S bits may be For a specific state, for example, the value of S may be 2, and the value of the first state may be 11. The high S bits refer to S bits from the high bit to the low bit of the third field. When the index of the first HARQ process belongs to the second set, the second field indicates the first delay and the index of the first HARQ process. A time delay can be a time unit of the first value or a time unit of the second value. In the embodiment of the present application, the second field can indicate the index of the first delay and the first HARQ process at the same time, so that the first communication device can determine the first delay and the first HARQ process by analyzing the second field of the control information. index of.

In some embodiments of the present application, the second state indicated by the low T bits of the third field is used to determine the transmission information of the transport block, and the transport block may be the first HARQ process in the second set. Transmission blocks scheduled by other HARQ processes. For example, the second set also includes the index of the second HARQ process, and the transmission block set included in the first field refers to the transmission block scheduled by the second HARQ process. Among them, the transmission information refers to whether the transmission block in the transmission block set is scheduled, and/or the new data indicator (NDI) corresponding to the transmission block when the transmission block is scheduled or the transmission block scheduled by the HARQ process NDI. It can be understood that if the NDI is flipped or changed or switched or toggled, it means that the corresponding TB is a new transmission, and if it is not flipped, the transmission block is a retransmission. Among them, flip refers to the state of a bit changes from 1 to 0, or from 0 to 1. Or the transmission information may be a transmission block type, for example, whether the transmission block type may be new data transmission or retransmission of data.

In some embodiments of the present application, the control information may be DCI, the second field in the control information may be the HARQ-ACK delay field in the DCI, and the third field may be the HARQ process number field in the DCI.

In some embodiments of the present application, the value of T is 2, and the lower 2 bits of the third field are the first bit and the second bit;

The first bit indicates whether the transmission block is scheduled, and the second bit indicates whether the transmission block is a newly transmitted transmission block or a retransmitted transmission block.

As an example, the lower 2 bits of the third field are used to indicate the scheduling information corresponding to the second HARQ process, and the second HARQ process belongs to the second set. The lower 2 bits are used to indicate the scheduling information corresponding to the second HARQ process, including 1 bit indicating whether the second HARQ process is scheduled, and 1 bit indicating NDI.

In some embodiments of the present application, the HARQ confirmation response delay includes: D time units, and the value of D is 13 or 14 or 15 or 17 or 19.

Wherein, the HARQ confirmation response delay is a first value, for example, the first value is 13 or 14 or 15 or 17 or 19. At this time, it can be adapted to support multiple HARQ scenarios. When 14HARQ is supported, the first delay from MPDCCH to PDSCH is relatively large, such as 7. As a result, the PDSCH to HARQ-ACK feedback can only be carried in the larger delay On the PUCCH subframe, the value 13 is the first PUCCH subframe that the PDSCH can use. In order to balance the HARQ-ACK information carried by different PUCCHs, the HARQ acknowledgement delay can also be 14, 15, 16, etc. Therefore, HARQ-ACK can be fed back, and the load carried on different PUCCH resources can be relatively balanced.

In some embodiments of the present application, when the first delay is a first numerical time unit, the control information indicates to determine the HARQ confirmation response delay from the first confirmation response delay set;

When the first delay is a second numerical time unit, the control information indicates to determine the HARQ confirmation response delay from the second confirmation response delay set;

Wherein, the first confirmation response delay set and the second confirmation response delay set include different HARQ confirmation response delays.

In the embodiment of the present application, both the first communication device and the second communication device may predetermine two confirmation response delay sets. For example, the two confirmation response delay sets may be: the first confirmation response delay set and the second confirmation response delay set. The set of acknowledgement response delays, the first set of acknowledgement response delays and the second set of acknowledgement response delays include different HARQ acknowledgement delays. The difference here is that at least one HARQ confirmation response delay belongs to one set (for example, the first confirmation response delay set), and the HARQ confirmation response delay does not belong to another set (for example, the second confirmation response delay set) . When the first delay is the second number of time units, the index of the first HARQ process belongs to the second set, and the HARQ acknowledgement delay can be determined according to the number of time units of the first delay. Get in. In the embodiment of the present application, the first communication device and the second communication device only need to determine the number of time units included in the first delay to determine the value range of the HARQ confirmation response delay, which simplifies the HARQ confirmation response delay Deterministic complexity.

Further, in some embodiments of the present application, the first confirmation response delay set includes at least one of the following values: 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17;

The second confirmation response delay set includes at least one of the following values: 13, 14, 15, 16, 19, 26;

Wherein, the value is the number of time units.

Specifically, the first confirmation response delay set includes one or more of the following elements, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17. The second confirmation response delay set includes one or more of the following elements: 13, 14, 15, 16, 19, 26. It can be seen that the minimum delay included in the second confirmation response delay set is 13, and the minimum delay included in the first confirmation response delay set is 4. Therefore, the number of time units included in the first delay is sufficient. It is determined from which set of acknowledgement response delays that the HARQ acknowledgement response delay should be obtained, which simplifies the complexity of determining the HARQ acknowledgement response delay. In addition, when the first delay is relatively large, for example, when the first delay is a second number of time units, for example, the first delay is 7 time units, the PDSCH to HARQ-ACK feedback can only be carried when the delay is greater. On the PUCCH subframe, and the value 13 is the first PUCCH subframe that the PDSCH can use. In order to balance the HARQ-ACK information carried by different PUCCHs, the values 14, 15, 16, etc. can also be used. Feeding back HARQ-ACK can also make the load carried on different PUCCH resources relatively balanced. When the first delay is small, for example, when the first delay is a first number of time units, for example, when the first delay is 2 time units, the HARQ-ACK feedback delay is also small, and can be more Flexible configuration. Therefore, at this time, the minimum value of the second acknowledgment delay set is greater than the minimum value of the first acknowledgment delay set. The two delays are designed to better adapt to different scheduling delays, thereby increasing different scheduling delays The flexibility of the feedback delay indication.

In some embodiments of the present application, the control information includes: a fourth field, where

When the index of the first HARQ process belongs to the first set, the fourth field indicates the HARQ confirmation response delay;

When the index of the first HARQ process belongs to the second set, the fourth field indicates the second number of time units and the HARQ confirmation response delay, or the first number of time units and the HARQ confirmation response delay.

The control information includes a fourth field, and the fourth field may indicate different information according to the value of the index of the first HARQ process. For example, when the index of the first HARQ process belongs to the first set, the fourth field indicates HARQ Acknowledgment delay (HARQ-ACK delay). The HARQ acknowledgement delay can also be called HARQ feedback delay. When the index of the first HARQ process belongs to the first set, the HARQ acknowledgement delay is indicated by the fourth field. Therefore, when the second communication device sends control information, the control information carries the fourth field. The first communication device parses the fourth field in the control information to obtain the HARQ confirmation response delay. The first communication device can confirm the HARQ according to the HARQ Response time delay for uplink feedback. When the index of the first HARQ process belongs to the second set, the HARQ confirmation response delay can be a delay value. For example, the HARQ confirmation response delay can be 13 time units. At this time, the fourth field in the control information is used for transmission HARQ acknowledgement response delay. When the index of the first HARQ process belongs to the second set, the fourth field indicates the first delay and HARQ acknowledgement response delay. The first delay can be the first number of time units or The second value is a time unit. In the embodiment of the present application, the fourth field can indicate the first delay and the HARQ confirmation response delay at the same time, so that the first communication device can determine the first delay and the HARQ confirmation response delay by analyzing the fourth field of the control information. .

In some embodiments of the present application, when the index of the first HARQ process belongs to the second set, the fourth field includes Q bits, and Q is a positive integer;

The Q bits in the fourth field indicate the first delay in the first delay set, and indicate the HARQ acknowledgement delay in the third acknowledgement delay set;

Wherein, the first delay set includes at least one of the following values: 2. P, where P is a positive integer greater than or equal to 7;

The third confirmation response delay set includes at least one of the following values: 4, 5, 7, 13;

Wherein, the value is the number of time units.

Optionally, the first HARQ process index is indicated by the HARQ process number field.

Specifically, the fourth field includes Q bits, the Q bits indicate the first delay in the first delay set, and the first delay set includes at least one of the following values: 2. P, P is a positive value greater than or equal to 7. Integer, P can be pre-defined or high-level configuration. Therefore, the first time delay may be 2 time units, or the first time delay may be 7 time units, or the first time delay may be greater than 7 time units. When 14 HARQ processes are introduced, the minimum first delay is 7 subframes, and when ACK feedback takes up more time, in order to schedule transmission blocks accurately and flexibly, a first delay greater than or equal to 7 needs to be introduced. In addition, In this solution, the meaning of the HARQ process number field is not changed, which has a small impact on the protocol, and the implementation complexity of the first communication device and the second communication device is low.

In the embodiment of this application, the Q bits also indicate the HARQ confirmation response delay in the third confirmation response delay set. The third confirmation response delay set includes at least one of the following values: 4, 5, 7, 13, and therefore HARQ The value of the confirmation response delay can be 4 time units, or 5 time units, or 7 time units, or 13 time units. When the first delay is large, for example, when the first delay is a second number of time units, for example, the first delay is 7 time units, resulting in PDSCH to HARQ-ACK feedback can only be carried on the PUCCH with greater delay On the subframe, the value 13 is the first PUCCH subframe that the PDSCH can use. When the first delay is small, for example, when the first delay is a first number of time units, for example, when the first delay is 2 time units, the HARQ-ACK feedback delay is also small, for example, it can be 4 , And can be configured more flexibly. Therefore, by selecting HARQ acknowledgement delays of different sizes from the third acknowledgement response delay set, different scheduling delays can be better adapted, thereby increasing the flexibility of feedback delay indication under different scheduling delays.

In some embodiments of the present application, the control information may be DCI, and the fourth field in the control information may be the HARQ-ACK delay field in the DCI.

In some embodiments of the present application, the method provided in the embodiments of the present application further includes:

Time delay for the second communication device to obtain the HARQ confirmation response;

The second communication device determines to enable HARQ feedback bundling according to the HARQ confirmation response delay belonging to the fourth confirmation response delay set, or the second communication device confirms that the HARQ response delay belongs to the fifth confirmation response delay set according to the HARQ When determining not to enable HARQ feedback binding;

The second communication device sends feedback binding indication information to the first communication device, where the feedback binding indication information is used by the first communication device to determine whether to enable HARQ feedback binding.

In some embodiments of the present application, the method provided in the embodiments of the present application further includes:

Receiving, by the first communication device, feedback binding indication information sent by the second communication device;

Determining, by the first communication device, whether to enable HARQ feedback bundling according to the feedback bundling indication information;

When HARQ feedback binding is enabled, the HARQ confirmation response delay belongs to the fourth confirmation response delay set;

When HARQ feedback binding is not enabled, the HARQ confirmation response delay belongs to the fifth confirmation response delay set;

Wherein, the fourth set of acknowledgement response delays and the fifth set of acknowledgement response delays respectively include different delay values.

Wherein, the feedback binding indication information can be sent through high-layer signaling or through physical layer signaling. For example, when HARQ-ACK bundling is not enabled for higher layer signaling and the first HARQ process belongs to the second set, the HARQ acknowledgement response delay belongs to the fourth acknowledgement response delay set; when the higher layer signaling enables HARQ-ACK bundling And when the first HARQ process belongs to the second set, the HARQ confirmation response delay belongs to the fifth confirmation response delay set, the fourth confirmation response delay set and the fifth confirmation response delay set.

In some embodiments of the present application, the fifth confirmation response delay set only includes the following value: 13.

Exemplarily, the fifth confirmation response delay set only includes 13. When the first delay is large, for example, when the first delay is a second number of time units, for example, the first delay is 7 time units, resulting in PDSCH to HARQ-ACK feedback can only be carried on the PUCCH with greater delay On the subframe, the value 13 is the first PUCCH subframe that can be used by the PDSCH, so the fifth acknowledgement delay set only includes 13, which can achieve the smallest feedback delay. Since HARQ bundling will affect the acknowledgement delay of HARQ-ACK, two different sets are determined for whether to enable bundling. The bundling delay is small, and the maximum delay of not enabling bundling can be very large, so it improves This improves the accuracy of the feedback delay and the flexibility of instructions.

In some embodiments of the present application, the initialization of the scrambling sequence of the first signal is determined according to one or more of the following parameters, which include the cell identification (ID), the starting subframe or symbol or time slot of the paging opportunity, The first index. The first index is used to indicate the number or index of the first signal resource configured by the second communication device for the first communication device. Exemplarily, the first signal is a wake up signal, and the first signal resource is a resource for transmitting the first signal. For example, the second communication device configures a total of 4 resources, numbered 0,1,2,3, this number is the resource number or index, the second communication device configures the first communication device with 2 first signal resources, respectively For resources with indexes 1 and 3, the first index corresponding to the resource with index 1 is 0, and the first index corresponding to the resource with index 3 is 1. In this solution, the first terminal device can determine the initialization sequence according to the number of resources actually configured for itself by the base station, which reduces the computational complexity and simplifies the implementation complexity of the first terminal device.

411. The first communication device receives control information sent by the second communication device, where the control information indicates an index of the first HARQ process corresponding to the first data transmission.

In the embodiment of the present application, a communication connection may be established between the second communication device and the first communication device, and the communication connection may be a wired connection or a wireless connection. The second communication device sends control information to the first communication device. The control information may be carried by physical layer signaling. For example, the control information may be DCI, or the control information may be other information that can communicate with the first communication device. Order, there is no limitation here. The first communication device may receive the control information sent by the second communication device through the aforementioned communication connection, and the first communication device may also parse the control information.

412. The first communication device determines the index of the first HARQ process according to the control information.

In the embodiment of the present application, after the first communication device receives the control information, the first communication device may also parse the control information to obtain the index of the first HARQ process corresponding to the first data transmission indicated by the control information. For example, the index of the first HARQ process determined by the first communication device may be an index number or an index identification.

403. The second communication device determines the start time unit used for the first data transmission according to the end time unit of the control information and the first time delay, where, when the index of the first HARQ process belongs to the first set, the second communication device It is determined that the first delay is a first numerical time unit, and when the index of the first HARQ process belongs to the second set, the second communication device determines that the first delay is a first numerical time unit or a second numerical time unit , The first value is not equal to the second value, and the first set and the second set include indexes of different HARQ processes.

In the embodiment of the present application, there is no difference in time sequence between step 403 and the aforementioned step 402. The second communication device first determines the end time unit of the control information, where the end time unit refers to the last time unit for sending the control information, for example, the end time unit may be the last subframe in which the control information is sent, and the end time unit may be The nth subframe refers to the last subframe in which control information is sent.

In the embodiment of the present application, the first time delay is the time unit between the end time unit of the control information and the start time unit used for the first data transmission, that is, it starts from the end time unit of the control information and needs to be separated. The first time delay can start to transmit the first data. In the embodiments of the present application, the first delay has multiple implementation manners. For example, the first delay may be instructed by the second communication device to the first communication device, or the first delay may be predefined. In addition, the length of time of the first delay (duration for short) in the embodiment of the present application may be determined by the index of the first HARQ process indicated by the control information, for example, the first time is determined according to the value of the index of the first HARQ process. The length of the delay.

In the embodiment of the present application, the first communication device and the second communication device are allocated a first set and a second set pre-configured. The first set includes one or more HARQ process indexes. Similarly, the second set The index of one or more HARQ processes is included in, and the first set and the second set include indexes of different HARQ processes, that is, the HARQ processes included in the first set and the second set have different indexes. Further, the index of the HARQ process included in the second set is greater than the index of the HARQ process included in the first set, that is, the index of any HARQ process included in the second set is greater than the index of any HARQ process included in the first set.

In the embodiment of the present application, when the index of the first HARQ process belongs to the second set, the first HARQ process may also be referred to as an additional HARQ process or a 14 HARQ process.

In some embodiments of the present application, the first set is {0,1,2,3,4,5,6,7,8,9}, and the second set is {10,11,12,13}. Among them, when the index of the HARQ process is 0,1,2,3,4,5,6,7,8,9, the index of the HARQ process belongs to the first set, and the index of the HARQ process is 10,11 At 12, 13, the index of the HARQ process belongs to the second set. In this solution, the index of the HARQ process included in the first set and the index of the HARQ process included in the second set are consecutive, so the first set There are 14 HARQ process indexes added to the second set. The index of the first HARQ process indicated by the control information may belong to the first set or the second set, and the index of the first HARQ process is determined according to the application scenario.

In some other embodiments of the present application, the first set is {0,1,2,3,4,5,6,7,8,9}, and the second set is {12,13,14,15}. Among them, when the index of the HARQ process is 0,1,2,3,4,5,6,7,8,9, the index of the HARQ process belongs to the first set, and the index of the HARQ process is 12,13 , 14 and 15, the index of the HARQ process belongs to the second set. In this solution, the index of the HARQ process included in the first set and the index of the HARQ process included in the second set are not continuous, and the first set There are 14 HARQ process indexes added to the second set. The index of the first HARQ process indicated by the control information may belong to the first set or the second set, and the index of the first HARQ process is determined according to the application scenario.

In the embodiment of the present application, the second communication device may determine the number of time units included in the first delay according to the value of the index of the first HARQ process, where the time unit may be a frame, a subframe, or a symbol , Or valid frame, or valid subframe, or valid symbol, or absolute frame, or absolute subframe, or absolute symbol, or BL/CE subframe, etc. In the embodiment of this application, according to whether the index of the first HARQ process belongs to the first set or belongs to the second set, the duration of the first delay is determined as two time units of different lengths. For example, the duration of one time unit is fixed, then The first delay can be a first value time unit or a second value time unit, where the first value is not equal to the second value, for example, the second value is greater than the first value, the first value can be determined according to specific scenarios. The specific value size of the numerical value and the second numerical value.

In some embodiments of the present application, the first value is 2 and the second value is 7, that is, the first delay may include 2 time units, or the first delay may include 7 time units, so the first The specific value of the delay can be determined according to whether the index of the first HARQ process belongs to the first set or belongs to the second set. The specific value of the first delay is determined by the first communication device and the second communication device. The delay enables the first terminal device to receive the first data correctly, reduces the complexity of the receiving algorithm of the first communication device, and also reduces the complexity of the sending algorithm of the second communication device, improves the flexibility of indication, and reduces the signaling Expenses, while improving the resource utilization of the system. Without limitation, in some embodiments of the present application, the value of the second numerical value may not be limited to 7, for example, the value of the second numerical value is P, and P is a positive integer greater than or equal to 7. With reference to Figure 3, it can be seen that the first delay may be 2 subframes, for example, the scheduling delay between M0 and D0 is 7 subframes, or the first delay may be 7 subframes, such as scheduling between M10 and D10. The time delay is 7 subframes.

In some embodiments of the present application, the length of the first delay is determined by the value of the index of the first HARQ process. For example, when the index of the first HARQ process belongs to the first set, the second communication device determines the first HARQ process. The time delay is a first number of time units. When the index of the first HARQ process belongs to the second set, the second communication device determines that the first time delay is the first number of time units or the second number of time units. Wherein, when the index of the first HARQ process belongs to the first set, the second communication device can determine that the first delay is a first number of time units, that is, the first delay can only be a first number of time units, at this time The first delay cannot be a second numerical time unit. For example, the first delay may be indicated by the second communication device to the second communication device. When the index of the first HARQ process belongs to the second set, the second communication device determines that the first delay is a first number of time units, or a second number of time units, that is, the first delay can be a first number of time units The unit may also be a time unit of a second value. For example, the first time delay may be predetermined or indicated by the second communication device to the first communication device.

In the embodiments of the present application, the first numerical value and the second numerical value refer to two unequal numerical values. For example, the first numerical value may be A, and the second numerical value may be B, so A and B are not equal.

It should be noted that when the index of the first HARQ process belongs to the second set, the second communication device can determine that the first delay is the second numerical time unit, but the second communication device can also determine that the first delay is the first A number of time units. When the index of the first HARQ process belongs to the first set, the second communication device cannot determine that the first delay is a second value time unit, that is, the second communication device can only determine that the first delay is a first value time unit unit.

In the embodiment of the present application, after the second communication device determines the first time delay and the end time unit of the control information, the second communication device determines the first data transmission used according to the end time unit of the control information and the first time delay For example, the second communication device starts from the end time unit of the control information, and the time unit obtained after the delay is performed according to the first time delay is used as the start time unit for the first data transmission. The start time The unit is the time unit at which the first data starts to be transmitted. For example, the start time unit may include: start frame, start subframe, start symbol, start valid frame, start valid subframe, start valid symbol, start Absolute frame, starting absolute subframe, starting absolute symbol, etc. In the embodiment of this application, the length of the first delay is determined by the value of the index of the first HARQ process. When the index of the first HARQ process belongs to the first set or the second set, the first delay has a different value. Therefore, for different values of the first delay, the determined start time unit used for the first data transmission is also different. For example, the first delay is the first numerical time unit, so The first start time unit used for the first data transmission is determined, and the first delay is a second value time unit, and the second start time unit used for the first data transmission can be determined.

As an example, when the index of the first HARQ process belongs to the first set, the second communication device sends the first data scheduled by the first HARQ process according to the first time unit set, and the first time unit of the first time unit set is The number is n+x1, where n is the number of the last time unit for transmitting control information, and x1 is the first number of time units; when the index of the first HARQ process belongs to the second set, the second communication device follows the second time unit The first data scheduled by the first HARQ process is sent collectively, the number of the first time unit of the second time unit set is n+x2, where n is the number of the last time unit for transmitting control information, and x2 is the first numerical time. Unit, or the second value unit of time.

404. The second communication device sends the first data according to the determined start time unit.

In the embodiment of the present application, the second communication device determines the start time unit used for the first data transmission through the foregoing step 403, and the second communication device can send the first data according to the start time unit, that is, at the start time When the unit arrives, the second communication device may send the first data scheduled by the first HARQ process. Since in the embodiment of the present application, the first communication device can also determine the start time unit used for the first data transmission in the manner described in step 403, when the start time unit arrives, the first communication device can receive the first time unit. The first data scheduled by the HARQ process, so that the first communication device can implement data transmission with the second communication device.

413. The first communication device determines the start time unit used for the first data transmission according to the end time unit and the first time delay of the control information, where, when the index of the first HARQ process belongs to the first set, the first communication device It is determined that the first delay is a first numerical time unit, and when the index of the first HARQ process belongs to the second set, the first communication device determines that the first delay is a first numerical time unit or a second numerical time unit , The first value is not equal to the second value, and the first set and the second set include indexes of different HARQ processes.

In the embodiment of the present application, after the first communication device determines the index of the first HARQ process indicated by the second communication device in step 412, the first communication device first determines the end time unit of the control information, where the end time unit Refers to the last time unit for sending control information. For example, the end time unit can be the last subframe for sending control information, and the end time unit can be the nth subframe. The nth subframe refers to the last subframe for sending control information. frame.

In the embodiment of the present application, the first time delay is the time unit between the end time unit of the control information and the start time unit used for the first data transmission, that is, it starts from the end time unit of the control information and needs to be separated. The first time delay can start to transmit the first data. In the embodiments of the present application, the first delay has multiple implementation manners. For example, the first delay may be instructed by the second communication device to the first communication device, or the first delay may be predefined. In addition, the length of time of the first delay (duration for short) in the embodiment of the present application may be determined by the index of the first HARQ process indicated by the control information, for example, the first time is determined according to the value of the index of the first HARQ process. The length of the delay.

In the embodiment of the present application, the first communication device and the second communication device are allocated a first set and a second set pre-configured. The first set includes one or more HARQ process indexes. Similarly, the second set The index of one or more HARQ processes is included in, and the first set and the second set include indexes of different HARQ processes, that is, the HARQ processes included in the first set and the second set have different indexes. Further, the index of the HARQ process included in the second set is greater than the index of the HARQ process included in the first set, that is, the index of any HARQ process included in the second set is greater than the index of any HARQ process included in the first set.

In the embodiment of the present application, when the index of the first HARQ process belongs to the second set, the first HARQ process may also be referred to as an additional HARQ process or a 14 HARQ process.

In some embodiments of the present application, the first set is {0,1,2,3,4,5,6,7,8,9}, and the second set is {10,11,12,13}. Among them, when the index of the HARQ process is 0,1,2,3,4,5,6,7,8,9, the index of the HARQ process belongs to the first set, and the index of the HARQ process is 10,11 At 12, 13, the index of the HARQ process belongs to the second set. In this solution, the index of the HARQ process included in the first set and the index of the HARQ process included in the second set are consecutive, so the first set There are 14 HARQ process indexes added to the second set. The index of the first HARQ process indicated by the control information may belong to the first set or the second set, and the index of the first HARQ process is determined according to the application scenario.

In some other embodiments of the present application, the first set is {0,1,2,3,4,5,6,7,8,9}, and the second set is {12,13,14,15}. Among them, when the index of the HARQ process is 0,1,2,3,4,5,6,7,8,9, the index of the HARQ process belongs to the first set, and the index of the HARQ process is 12,13 , 14 and 15, the index of the HARQ process belongs to the second set. In this solution, the index of the HARQ process included in the first set and the index of the HARQ process included in the second set are not continuous, and the first set There are 14 HARQ process indexes added to the second set. The index of the first HARQ process indicated by the control information may belong to the first set or the second set, and the index of the first HARQ process is determined according to the application scenario.

In the embodiment of the present application, the second communication device may determine the number of time units included in the first delay according to the value of the index of the first HARQ process, where the time unit may be a frame, a subframe, or a symbol , Or valid frame, or valid subframe, or valid symbol, or absolute frame, or absolute subframe, or absolute symbol, or BL/CE subframe, etc. In the embodiment of this application, according to whether the index of the first HARQ process belongs to the first set or belongs to the second set, the duration of the first delay is determined as two time units of different lengths. For example, the duration of one time unit is fixed, then The first delay can be a first value time unit or a second value time unit, where the first value is not equal to the second value, for example, the second value is greater than the first value, the first value can be determined according to specific scenarios. The specific value size of the numerical value and the second numerical value.

In some embodiments of the present application, the first value is 2 and the second value is 7, that is, the first delay may include 2 time units, or the first delay may include 7 time units, so the first delay The specific value of may be determined according to whether the index of the first HARQ process belongs to the first set or belongs to the second set. The specific value of the first delay is the delay that can be determined by the first communication device and the second communication device, This enables the first communication device to receive the first data correctly, reduces the complexity of the receiving algorithm of the first communication device, and also reduces the complexity of the sending algorithm of the second communication device, improves the flexibility of indication, and reduces the signaling overhead. At the same time, the resource utilization rate of the system is improved. Without limitation, in some embodiments of the present application, the value of the second numerical value may not be limited to 7, for example, the value of the second numerical value is P, and P is a positive integer greater than or equal to 7. With reference to Figure 3, it can be seen that the first delay may be 2 subframes, for example, the scheduling delay between M0 and D0 is 7 subframes, or the first delay may be 7 subframes, such as scheduling between M10 and D10. The time delay is 7 subframes.

In some embodiments of the present application, the length of the first delay is determined by the value of the index of the first HARQ process. For example, when the index of the first HARQ process belongs to the first set, the first communication device determines the first HARQ process. The delay is a first number of time units. When the index of the first HARQ process belongs to the second set, the first communication device determines that the first delay is the first number of time units or the second number of time units. Wherein, when the index of the first HARQ process belongs to the first set, the first communication device may determine that the first delay is a first number of time units, that is, the first delay can only be the first number of time units, at this time The first delay cannot be a second numerical time unit. For example, the first delay may be indicated to the first communication device by the second communication device. When the index of the first HARQ process belongs to the second set, the first communication device determines that the first delay is a first number of time units, or a second number of time units, that is, the first delay can be a first number of time units The unit may also be a time unit of a second value. For example, the first time delay may be predetermined or indicated by the second communication device to the first communication device.

In the embodiments of the present application, the first numerical value and the second numerical value refer to two unequal numerical values. For example, the first numerical value may be A, and the second numerical value may be B, so A and B are not equal.

It should be noted that when the index of the first HARQ process belongs to the second set, the first communication device can determine that the first delay is the second numerical time unit, but the first communication device can also determine that the first delay is the first A number of time units. When the index of the first HARQ process belongs to the first set, the first communication device cannot determine that the first delay is a second value time unit, that is, the first communication device can only determine that the first delay is a first value time unit unit.

In the embodiment of the present application, after the first communication device determines the first time delay and the end time unit of the control information, the first communication device determines the first data transmission used according to the end time unit of the control information and the first time delay. For example, the first communication device starts from the end time unit of the control information, and the time unit obtained after delaying according to the first time delay is used as the start time unit for the first data transmission. The start time The unit is the time unit at which the first data starts to be transmitted. For example, the start time unit may include: start frame, start subframe, start symbol, start valid frame, start valid subframe, start valid symbol, start Absolute frame, starting absolute subframe, starting absolute symbol, etc. In the embodiment of this application, the length of the first delay is determined by the value of the index of the first HARQ process. When the index of the first HARQ process belongs to the first set or the second set, the first delay has a different value. Therefore, for different values of the first delay, the determined start time unit used for the first data transmission is also different. For example, the first delay is the first numerical time unit, so The first start time unit used for the first data transmission is determined, and the first delay is a second value time unit, and the second start time unit used for the first data transmission can be determined.

414. The first communication device receives the first data according to the determined start time unit.

In the embodiment of the present application, the first communication device determines the start time unit used for the first data transmission through the aforementioned step 413, and the first communication device can receive the first data according to the start time unit, that is, at the start time. When the unit arrives, the first communication device can receive the first data scheduled by the first HARQ process. In the embodiment of the present application, the second communication device can also determine the start time unit used for the first data transmission in the manner of step 403, so when the start time unit arrives, the first communication device can receive the second communication The first data sent by the device, so that the first communication device can realize data transmission with the second communication device.

In some embodiments of the present application, in addition to performing step 411 to step 414, the data transmission method provided in the embodiment of the present application may further include the following steps by the first communication device:

The first communication device receives the first information sent by the second communication device, where the first information is used to indicate whether the index of the first HARQ process can or cannot belong to the second set;

The first information is used to indicate whether the index of the first HARQ process can or cannot belong to the second set, and the index of the first HARQ process can belong to the second set means that the index of the first HARQ process has the ability to belong to the second set, The index of the first HARQ process cannot belong to the second set means that the index of the first HARQ process does not have the ability to belong to the second set, that is, the index of the first HARQ process can only belong to the first set at this time. The first information is used to indicate whether the index of the first HARQ process can or cannot belong to the second set, and can also be expressed as: the first information is used to enable or disable the index indicating the first HARQ process from the second set.

The transmission of the first data can adopt the asynchronous HARQ mode or the synchronous HARQ mode. In the case where the first information indicates that the index of the first HARQ process can belong to the second set, which mode can be used for the transmission of the first data by the first HARQ process The index of belongs to the second set, or the index of the first HARQ process belongs to the first set to determine. For example, when the index of the first HARQ process belongs to the first set, the transmission of the first data adopts the asynchronous HARQ mode, and the index of the first HARQ process When belonging to the second set, the transmission of the first data adopts the synchronous HARQ mode. The second communication device can indicate to the first communication device the HARQ mode adopted for the first data transmission through the value of the index of the first HARQ process, which improves the indication efficiency of the HARQ mode.

It can be seen from the example of the foregoing embodiment that both the first communication device and the second communication device can determine the start time unit used for the first data transmission according to the end time unit and the first time delay of the control information, where, when the first When the index of the HARQ process belongs to the first set, the first communication device determines that the first delay is a first numerical time unit; when the index of the first HARQ process belongs to the second set, the first communication device determines that the first delay is The first value is one time unit, or the second value is one time unit, the first value is not equal to the second value, and the first set and the second set include indexes of different HARQ processes. Therefore, the specific value of the first delay can be determined according to whether the index of the first HARQ process belongs to the first set or belongs to the second set. The specific value of the first delay can be determined by the first communication device and the second communication device. The down time delay enables the first communication device to receive the first data correctly, reduces the complexity of the receiving algorithm of the first communication device, and also reduces the complexity of the sending algorithm of the second communication device, improves the flexibility of indication, and reduces Small signaling overhead, while improving the resource utilization of the system.

In order to facilitate a better understanding and implementation of the above-mentioned solutions in the embodiments of the present application, the following examples illustrate corresponding application scenarios for specific description.

In the solution of the embodiment of the present application, the first communication device may be a network device, and the second communication device may be a terminal device. Alternatively, the second communication device may be a network device, and the first communication device may be a terminal device. Alternatively, the first communication device may be a device with sending capability, and the second communication device may be a device with receiving capability. In the following embodiments, the first communication device is the network device, and the second communication device is the terminal device as an example. The embodiment of the present application minimizes the impact of the protocol and minimizes the implementation complexity of the terminal device and the base station. Indication and determination of scheduling delay and HARQ-ACK delay in a HARQ process scenario. In the embodiment of the present application, the interaction process between the network device and the terminal device mainly includes the following steps:

Step 1: The base station determines the control information and the first information.

Wherein, the first information indicates that the first communication device (terminal device) enables or disables the additional HARQ process. The additional HARQ process may also be referred to as X HARQ process, where X is a positive integer greater than 10, for example, X=14. In other words, the first information is used to enable or disable 14 HARQ processes. When the first information enables 14 HARQ processes, the terminal device can configure up to 14 HARQ processes, otherwise it cannot configure 14 HARQ processes. . Here, enabling and disabling can also be understood as configuration or no configuration.

The control information includes field 1 and field 2, where field 1 is the HARQ-ACK delay field, and field 2 is the HARQ process number field.

Step 2: The base station sends the control information and the first information to the terminal device.

Step 3: The terminal device receives the control information and the first information sent by the base station.

For example, the control information may be downlink control information. Specifically, the terminal device first determines whether to support an additional HARQ process according to the first information.

When the terminal device supports an additional HARQ process, and the first HARQ process index indicated by the downlink control information is the first set, the scheduling delay is the first type of delay, which can also be understood as the terminal device decoding in the first subframe set ( Or receive) the corresponding PDSCH, where the first subframe number of the first subframe set is n+x1; when the first HARQ process indicated by the downlink control information is the second set, the scheduling delay is of the second type Time delay can also be understood as the terminal device decoding (or receiving) the corresponding PDSCH in the second subframe set, where the first subframe number of the second subframe set is n+x2, and subframe n is the one receiving the MPDCCH The last subframe.

Specifically, the first set is {0,1,2,3,4,5,6,7,8,9}, and the second set is {10,11,12,13}. The foregoing first delay is the first type of delay here, and the first type of delay is 2 valid subframes, that is, x1 is the second valid subframe after subframe n, and the foregoing first delay is The second type of delay here, the second type of delay is 7 effective subframes, that is, x2 is the 7th effective subframe or absolute subframe after subframe n. That is, when the index of the scheduled HARQ process is less than or equal to 9, the scheduling delay is 2 subframes, and when the index of the scheduled HARQ process is greater than 9, the scheduling delay is 7 subframes.

As shown in Table 3 below, it is the correspondence table of HARQ process and scheduling delay:

The first HARQ process		Scheduling delay
0～9 (first set)	2 effective subframes
10～13 (Second set)	7 effective subframes

Figure 5 is a schematic diagram of subframes occupied by data transmission and feedback information transmission in a system supporting 14 HARQ processes in an embodiment of the application. When the index of the first HARQ process belongs to the second set, the first delay is 7 subframes, and the downlink When the first HARQ process index indicated by the control information is the second set, the HARQ-ACK delay is 13, and the HARQ-ACK delay and HARQ acknowledgement delay have the same meaning. When the first HARQ process index indicated by the downlink control information is In the first set, the HARQ-ACK delay is configured through field 1. That is, when the HARQ process index is included in the second set, the HARQ-ACK delay is a fixed 13, that is, the HARQ-ACK feedback at this time is synchronized.

Optionally, when the index of the first HARQ process indicated by the downlink control information is included in the second set, field 1 is used to indicate other HARQ processes in the second set (for example, the second HARQ process, the third HARQ process, and the fourth HARQ process ). Specifically, field 1 includes 3 bits, and the 3 bits indicate whether the TBs corresponding to other HARQ processes in the second set are scheduled according to the bitmap mode. As shown in Table 4 below, the second HARQ process, the third HARQ process, and the fourth HARQ process belong to the second set.

Table 4 is a table of indication contents corresponding to different bit states of field 1:

Field 1	Instruction content
First bit	Whether the TB corresponding to the second HARQ process is scheduled
Second bit	Whether the TB corresponding to the third HARQ process is scheduled
Third bit	Whether the TB corresponding to the fourth HARQ process is scheduled

Exemplarily, when the high S bit of field 2 (HARQ process number) in the downlink control information is in the first state, field 1 in the downlink control information is used to indicate HARQ ID and scheduling delay, as shown in Table 5 below. :

Table 5 is a table of HARQ ID and scheduling delay indicated by field 1 in the downlink control information:

At this time, the low T bits of field 2 are used to indicate the scheduling information corresponding to the second HARQ process, and the second HARQ process belongs to the second set. Specifically, S=2, and the first state is 11, that is, when the upper 2 bits are 11, field 1 is used to indicate HARQ ID and scheduling delay. T=2, that is, the lower 2 bits are used to indicate the scheduling information corresponding to the second HARQ process, including 1 bit indicating whether the second HARQ process is scheduled, and 1 bit indicating NDI.

Optionally, when the scheduling delay is 7, HARQ-ACK delay is the first value, for example, the first value is 13 or 14 or 15 or 17 or 19. That is, the HARQ-ACK feedback time is fixed at this time, which is synchronous HARQ.

Optionally, when the scheduled delay is the first type of delay (2 subframes) and the scheduled HARQ process belongs to the second set, the HARQ-ACK delay belongs to the third set, and when the scheduled delay is the first In the second type of delay (7 subframes), the HARQ-ACK delay belongs to the fourth set. The third set is different from the fourth set. The difference between the two sets means that at least one element belongs to the fourth set, but the element does not belong to the third set. The optional third set includes one or more of the following elements, for example, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17. The fourth set includes one or more of the following elements, such as 13, 14, 15, 16, 19, 26. Optionally, the first state set of field 2 is used to indicate the HARQ-ACK delay. Exemplary, as shown in Table 6 below:

Table 6 is the HARQ-ACK delay value table indicated by the HARQ process number:

Optionally, when HARQ-ACK bundling is not enabled in higher layer signaling and the first HARQ process that is scheduled belongs to the second set, the HARQ ACK delay belongs to the fifth set; when the higher layer signaling enables HARQ-ACK bundling And when the scheduled first HARQ process belongs to the second set, the HARQ ACK delay belongs to the sixth set, and the fifth set is different from the sixth set. Exemplarily, the sixth set only includes 13.

Optionally, when the first information sent by the second communication device enables additional HARQ processes (it can also be to enable 14HARQ processes or enable the index of the first HARQ process to be indicated in the second set), and when the coverage enhancement scheduling enhancement is configured When (ce-SchedulingEnhancement) is set to range 2 or coverage enhancement HARQ acknowledgement binding (ce-HARQ-AckBundling), HARQ ACK delay is indicated by field 1 (HARQ-ACK delay), HARQ-ACK The first state of delay indicates the first value, for example, the first value is 13, and the first state is 101. It is understandable that when the first information sent by the second communication device enables the additional HARQ process, and when the coverage enhancement scheduling enhancement (ce-SchedulingEnhancement) is set to range 2 or the coverage enhancement HARQ confirmation response binding ( ce-HARQ-AckBundling), the value of HARQ-ACK delay includes at least 13, and the HARQ-ACK delay at this time can be more adapted to the HARQ-ACK delay requirement when the 14HARQ process is enabled, and the feedback accuracy is improved.

When the first information sent by the base station does not enable additional HARQ processes, when the configuration ce-SchedulingEnhancement is set to range2, or when ce-HARQ-AckBundling is set, the first state of field 1 indicates the second value, for example, the second value 9. As shown in Table 7 below, the value of HARQ-ACK delay is exemplified.

Table 7 is the value table of HARQ-ACK delay:

Exemplarily, field 2 (HARQ process number) indicates the index of the first HARQ process. When the scheduled first HARQ process index belongs to the second set {10,11,12,13}, field 1 (HARQ-ACK delay field) ) Is used to indicate the scheduling delay and HARQ-ACK feedback delay. For example, as shown in Table 8 below.

Table 8 is the HARQ-ACK delay value table indicated by the HARQ process number:

HARQ-ACK delay domain in DCI	HARQ-ACK delay value	Scheduled PDSCH
0	4	2
1	5	2
10	7	2
11	9	2
100	4	7
101	5	7
110	7	7
111	9	7

Step 4: The terminal device determines the control information, and receives the PDSCH according to the first information.

Among them, the control information and the first information determined by the terminal device are detailed in the description of the control information and the first information in the foregoing step 3, which will not be repeated here.

It can be seen from the foregoing example that, in the embodiment of the present application, when the base station enables additional HARQ processes, the scheduling delay and the feedback delay of the HARQ process are fixed, so that the terminal device can correctly receive and feed back HARQ-ACK, reducing The complexity of the receiving algorithm of the terminal equipment and the base station is improved, and the remaining state is used to indicate the TB scheduling situation in the second HARQ process, which improves the flexibility of indication, reduces the signaling overhead, and improves the resource utilization rate of the system. When the feedback delay of the HARQ process is configurable, when the indicated scheduling delay is 2, the HARQ-ACK delay value is smaller, and when the indicated scheduling delay is 7, the HARQ-ACK delay value is larger. In this way, TBs with different scheduling delays can be adapted, and HARQ-ACK feedback time information can be indicated more flexibly and accurately.

Optionally, the embodiments of the present application may also be applied to 5G or other communication systems. For example, the solution of the embodiment of this application can also be used in the compatibility of other communication systems with other systems, such as the compatibility of NR with enhanced machine type of communication (eMTC), and further enhanced machine type of communication (FeMTC) systems. Wait.

It should be noted that for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should know that this application is not limited by the described sequence of actions. Because according to this application, some steps can be performed in other order or at the same time. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by this application.

To facilitate better implementation of the above-mentioned solutions in the embodiments of the present application, related devices for implementing the above-mentioned solutions are also provided below.

Please refer to FIG. 6, which is a schematic diagram of the composition structure of a first communication device in an embodiment of this application. The first communication device 1000 includes a processing module 1001 and a transceiver module 1002, wherein,

The transceiver module is configured to receive control information sent by a second communication device, where the control information indicates the index of the first hybrid automatic repeat request HARQ process corresponding to the first data transmission;

The processing module is configured to determine the index of the first HARQ process according to the control information;

The processing module is configured to determine the start time unit used for the first data transmission according to the end time unit and the first delay of the control information, wherein, when the index of the first HARQ process belongs to the first When collecting, the first communication device determines that the first delay is a first number of time units, and when the index of the first HARQ process belongs to the second set, the first communication device determines that the first The delay is the first number of time units or the second number of time units, the first value is not equal to the second value, and the first set and the second set include indexes of different HARQ processes ；

The transceiver module is configured to receive the first data according to the determined start time unit.

In some embodiments of the present application, the transceiver module is configured to receive first information sent by the second communication device, and the first information is used to indicate whether the index of the first HARQ process can or cannot belong to The second set;

The processing module is configured to, when the first information indicates that the index of the first HARQ process can belong to the second set, when the index of the first HARQ process belongs to the first set, It is determined that the transmission of the first data adopts the asynchronous HARQ mode; when the index of the first HARQ process belongs to the second set, it is determined that the transmission of the first data adopts the synchronous HARQ mode.

Please refer to FIG. 7, which is a schematic diagram of the composition structure of the second communication device in this embodiment of the application. The second communication device 1100 includes: a processing module 1101 and a transceiver module 1102, wherein,

The processing module is configured to determine the index of the first hybrid automatic repeat request HARQ process corresponding to the first data transmission;

The transceiver module is configured to send control information to a first communication device, where the control information indicates the index of the first HARQ process;

The processing module is configured to determine the start time unit used for the first data transmission according to the end time unit and the first delay of the control information, wherein, when the index of the first HARQ process belongs to the first When collecting, the second communication device determines that the first delay is a first number of time units, and when the index of the first HARQ process belongs to the second set, the second communication device determines that the first The delay is the first number of time units or the second number of time units, the first value is not equal to the second value, and the first set and the second set include indexes of different HARQ processes ；

The transceiver module is configured to send the first data according to the determined start time unit.

In some embodiments of the present application, the transceiver module is configured to send first information to the first communication device, where the first information is used to indicate whether the index of the first HARQ process can or cannot belong to all Said the second set;

The processing module is configured to, when the first information indicates that the index of the first HARQ process can belong to the second set, when the index of the first HARQ process belongs to the first set, The transmission of the first data adopts the asynchronous HARQ mode; when the index of the first HARQ process belongs to the second set, the transmission of the first data adopts the synchronous HARQ mode.

In some embodiments of the present application, the control information includes: a first field, where

When the index of the first HARQ process belongs to the first set, the first field indicates the HARQ confirmation response delay;

When the index of the first HARQ process belongs to the second set, the first field includes transmission information of a transport block set, or the first field is a reserved field.

In some embodiments of the present application, when the index of the first HARQ process belongs to the second set, the first field includes N bits, and the N is a positive integer;

The N bits of the first field indicate whether each transmission block in the transmission block set is scheduled in a bitmap manner.

In some embodiments of the present application, the control information includes: a second field and a third field, where:

When the high S bits of the third field indicate the first state, the second field indicates the second number of time units and the index of the first HARQ process, or indicates the first number of time units And the index of the first HARQ process;

and / or,

The second state indicated by the low T bits of the third field is used to determine the transmission information of the transmission block;

Wherein, the S and the T are positive integers.

In some embodiments of the present application, the value of T is 2, and the lower 2 bits of the third field are the first bit and the second bit;

The first bit indicates whether the transmission block is scheduled, and the second bit indicates that the transmission block is a newly transmitted transmission block or a retransmitted transmission block.

In some embodiments of the present application, the HARQ confirmation response delay includes D time units, and the value of D is 13 or 14 or 15 or 17 or 19.

In some embodiments of the present application, when the first delay is a first numerical time unit, the control information indicates to determine the HARQ confirmation response delay from the first confirmation response delay set;

When the first time delay is a second numerical time unit, the control information indicates to determine the HARQ confirmation response time delay from the second confirmation response time delay set;

Wherein, the first set of acknowledgement response delays and the second set of acknowledgement response delays include different HARQ acknowledgement response delays.

In some embodiments of the present application, the first confirmation response delay set includes at least one of the following values: 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17;

The second set of acknowledgement response delays includes at least one of the following values: 13, 14, 15, 16, 19, 26;

Wherein, the value is the number of time units.

In some embodiments of the present application, the control information includes: a fourth field, where

When the index of the first HARQ process belongs to the first set, the fourth field indicates the HARQ confirmation response delay;

When the index of the first HARQ process belongs to the second set, the fourth field indicates the second number of time units and the HARQ confirmation response delay, or indicates the first number of time units And the HARQ confirmation response delay.

In some embodiments of the present application, when the index of the first HARQ process belongs to the second set, the fourth field includes Q bits, and the Q is a positive integer;

The Q bits of the fourth field indicate the first delay in the first delay set, and indicate the HARQ acknowledgement delay in the third acknowledgement delay set;

Wherein, the first delay set includes at least one of the following values: 2. P, where P is a positive integer greater than or equal to 7;

The third set of acknowledgement response delays includes at least one of the following values: 4, 5, 7, 13;

Wherein, the value is the number of time units.

In some embodiments of the present application, the first set is {0,1,2,3,4,5,6,7,8,9}, and the second set is {10,11,12, 13};

or,

The first set is {0,1,2,3,4,5,6,7,8,9}, and the second set is {12,13,14,15}.

In some embodiments of the present application, the first value is 2 and the second value is 7.

It can be seen from the example of the foregoing embodiment that both the first communication device and the second communication device can determine the start time unit used for the first data transmission according to the end time unit and the first time delay of the control information, where, when the first When the index of the HARQ process belongs to the first set, the first communication device determines that the first delay is a first numerical time unit; when the index of the first HARQ process belongs to the second set, the first communication device determines that the first delay is The first value is one time unit, or the second value is one time unit, the first value is not equal to the second value, and the first set and the second set include indexes of different HARQ processes. Therefore, the specific value of the first delay can be determined according to whether the index of the first HARQ process belongs to the first set or belongs to the second set. The specific value of the first delay can be determined by the first communication device and the second communication device. The time delay enables the terminal device to receive the first data correctly, reduces the complexity of the receiving algorithm of the first communication device, and also reduces the complexity of the sending algorithm of the second communication device, improves the flexibility of indication, and reduces the signal. Make the cost, and improve the resource utilization of the system at the same time.

The embodiments of the present application also provide a computer storage medium, wherein the computer storage medium stores a program, and the program executes some or all of the steps recorded in the above method embodiments.

As shown in FIG. 8, it is a schematic structural diagram of another device according to an embodiment of this application. The device is a first communication device, and the first communication device may include: a processor 121 (for example, a CPU), a memory 122, and a transmitter 124. The transmitter 124 and the receiver 123 are coupled to the processor 121, and the processor 121 controls the sending action of the transmitter 124 and the receiving action of the receiver 123. The memory 122 may include a high-speed RAM memory, or may also include a non-volatile memory NVM, such as at least one disk memory. The memory 122 may store various instructions for completing various processing functions and implementing the methods of the embodiments of the present application. step. Optionally, the first communication device involved in the embodiment of the present application may further include one or more of a power supply 125, a communication bus 126, and a communication port 127. The receiver 123 and the transmitter 124 may be integrated in the transceiver of the first communication device, or may be independent receiving and transmitting antennas on the first communication device. The communication bus 126 is used to implement communication connections between components. The aforementioned communication port 127 is used to implement connection and communication between the first communication device and other peripherals.

In the embodiment of the present application, the above-mentioned memory 122 is used to store computer executable program code, and the program code includes instructions; when the processor 121 executes the instructions, the instructions cause the processor 121 to perform the processing actions of the first communication device in the above-mentioned method embodiment. , The transmitter 124 is made to execute the sending action of the first communication device in the foregoing method embodiment, and the implementation principle and technical effect are similar, and will not be repeated here.

As shown in FIG. 9, it is a schematic structural diagram of another device according to an embodiment of this application. The device is a second communication device, and the second communication device may include: a processor (for example, a CPU) 131, a memory 132, and a receiver 133. The receiver 133 and the transmitter 134 are coupled to the processor 131, and the processor 131 controls the receiving action of the receiver 133 and the sending action of the transmitter 134. The memory 132 may include a high-speed RAM memory, or may also include a non-volatile memory NVM, such as at least one disk memory. The memory 132 may store various instructions for completing various processing functions and implementing the methods of the embodiments of the present application. step. Optionally, the second communication device involved in the embodiment of the present application may further include one or more of a power supply 135, a communication bus 136, and a communication port 137. The receiver 133 and the transmitter 134 may be integrated in the transceiver of the second communication device, or may be independent receiving and transmitting antennas on the second communication device. The communication bus 136 is used to implement communication connections between components. The aforementioned communication port 137 is used to implement connection and communication between the second network device and other peripherals.

In another possible design, when the communication device is a chip in a terminal device or a network device, the chip includes: a processing unit and a communication unit. The processing unit may be, for example, a processor, and the communication unit may be, for example, an input. / Output interface, pin or circuit, etc. The processing unit can execute the computer-executable instructions stored in the storage unit, so that the chip in the terminal executes the wireless communication method of any one of the foregoing first aspect. Optionally, the storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit in the terminal located outside the chip, such as a read-only memory (read-only memory). -only memory, ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), etc.

Among them, the processor mentioned in any of the above can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the above The first aspect is an integrated circuit for program execution of the wireless communication method.

In addition, it should be noted that the device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physically separate. The physical unit can be located in one place or distributed across multiple network units. Some or all of the modules can be selected according to actual needs to achieve the objectives of the solutions of the embodiments. In addition, in the drawings of the device embodiments provided in the present application, the connection relationship between the modules indicates that they have a communication connection between them, which can be specifically implemented as one or more communication buses or signal lines. Those of ordinary skill in the art can understand and implement it without creative work.

Through the description of the above embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus necessary general hardware. Of course, it can also be implemented by dedicated hardware including dedicated integrated circuits, dedicated CPUs, dedicated memory, Dedicated components and so on to achieve. Under normal circumstances, all functions completed by computer programs can be easily implemented with corresponding hardware. Moreover, the specific hardware structures used to achieve the same function can also be diverse, such as analog circuits, digital circuits or special-purpose circuits. Circuit etc. However, for this application, software program implementation is a better implementation in more cases. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a readable storage medium, such as a computer floppy disk. , U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, etc., including several instructions to make a computer device (which can be A personal computer, server, or network device, etc.) execute the method described in each embodiment of the present application.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part.

The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website site, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server or a data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

Claims (30)

1. A data transmission method, characterized in that it comprises:

   The first communication device receives control information sent by the second communication device, where the control information indicates the index of the first hybrid automatic repeat request HARQ process corresponding to the first data transmission;

   Determining, by the first communication device, the index of the first HARQ process according to the control information;

   The first communication device determines the start time unit used for the first data transmission according to the end time unit and the first time delay of the control information, wherein, when the index of the first HARQ process belongs to the first set When the first communication device determines that the first time delay is a first number of time units, when the index of the first HARQ process belongs to the second set, the first communication device determines the first time Extended to the first number of time units or a second number of time units, the first number is not equal to the second number, and the first set and the second set include indexes of different HARQ processes;

   The first communication device receives the first data according to the determined start time unit.
2. The method according to claim 1, wherein the method further comprises:

   Receiving, by the first communication device, first information sent by the second communication device, where the first information is used to indicate whether the index of the first HARQ process can or cannot belong to the second set;

   In the case where the first information indicates that the index of the first HARQ process can belong to the second set, when the index of the first HARQ process belongs to the first set, the first communication device determines The transmission of the first data adopts the asynchronous HARQ mode; when the index of the first HARQ process belongs to the second set, the first communication device determines that the transmission of the first data adopts the synchronous HARQ mode.
3. A data transmission method, characterized in that it comprises:

   The second communication device determines the index of the first hybrid automatic repeat request HARQ process corresponding to the first data transmission;

   The second communication device sends control information to the first communication device, where the control information indicates the index of the first HARQ process;

   The second communication device determines the start time unit used for the first data transmission according to the end time unit and the first time delay of the control information, wherein, when the index of the first HARQ process belongs to the first set When the second communication device determines that the first time delay is a first number of time units, when the index of the first HARQ process belongs to the second set, the second communication device determines the first time Extended to the first number of time units or a second number of time units, the first number is not equal to the second number, and the first set and the second set include indexes of different HARQ processes;

   The second communication device sends the first data according to the determined start time unit.
4. The method according to claim 3, wherein the method further comprises:

   Sending, by the second communication device, first information to the first communication device, where the first information is used to indicate whether the index of the first HARQ process can or cannot belong to the second set;

   In the case where the first information indicates that the index of the first HARQ process can belong to the second set, when the index of the first HARQ process belongs to the first set, the second communication device determines The transmission of the first data adopts the asynchronous HARQ mode; when the index of the first HARQ process belongs to the second set, the second communication device determines that the transmission of the first data adopts the synchronous HARQ mode.
5. The method according to any one of claims 1 to 4, wherein the control information comprises: a first field, wherein:

   When the index of the first HARQ process belongs to the first set, the first field indicates the HARQ confirmation response delay;

   When the index of the first HARQ process belongs to the second set, the first field includes transmission information of a transport block set, or the first field is a reserved field.
6. The method according to claim 5, wherein when the index of the first HARQ process belongs to the second set, the first field includes N bits, and the N is a positive integer;

   The N bits of the first field indicate whether each transmission block in the transmission block set is scheduled in a bitmap manner.
7. The method according to any one of claims 1 to 4, wherein the control information comprises: a second field and a third field, wherein:

   When the high S bits of the third field indicate the first state, the second field indicates the second number of time units and the index of the first HARQ process, or indicates the first number of time units And the index of the first HARQ process;

   and / or,

   The second state indicated by the low T bits of the third field is used to determine the transmission information of the transmission block;

   Wherein, the S and the T are positive integers.
8. The method according to claim 7, wherein the value of T is 2, and the lower 2 bits of the third field are the first bit and the second bit;

   The first bit indicates whether the transmission block is scheduled, and the second bit indicates that the transmission block is a newly transmitted transmission block or a retransmitted transmission block.
9. The method according to claim 5 or 6, characterized in that the HARQ confirmation response delay comprises: D time units, and the value of D is 13 or 14 or 15 or 17 or 19.
10. The method according to any one of claims 1 to 4, characterized in that:

    When the first delay is a first numerical time unit, the control information indicates to determine the HARQ confirmation response delay from the first confirmation response delay set;

    When the first time delay is a second numerical time unit, the control information indicates to determine the HARQ confirmation response time delay from the second confirmation response time delay set;

    Wherein, the first set of acknowledgement response delays and the second set of acknowledgement response delays include different HARQ acknowledgement response delays.
11. The method according to claim 10, wherein the first confirmation response delay set includes at least one of the following values: 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17;

    The second set of acknowledgement response delays includes at least one of the following values: 13, 14, 15, 16, 19, 26;

    Wherein, the value is the number of time units.
12. The method according to any one of claims 1 to 11, wherein the control information comprises: a fourth field, wherein:

    When the index of the first HARQ process belongs to the first set, the fourth field indicates the HARQ confirmation response delay;

    When the index of the first HARQ process belongs to the second set, the fourth field indicates the second number of time units and the HARQ confirmation response delay, or indicates the first number of time units And the HARQ confirmation response delay.
13. The method according to claim 12, wherein when the index of the first HARQ process belongs to the second set, the fourth field includes Q bits, and the Q is a positive integer;

    The Q bits of the fourth field indicate the first delay in the first delay set, and indicate the HARQ acknowledgement delay in the third acknowledgement delay set;

    Wherein, the first delay set includes at least one of the following values: 2. P, where P is a positive integer greater than or equal to 7;

    The third set of acknowledgement response delays includes at least one of the following values: 4, 5, 7, 13;

    Wherein, the value is the number of time units.
14. The method according to any one of claims 1 to 13, wherein the first set is {0,1,2,3,4,5,6,7,8,9}, and the first set is {0,1,2,3,4,5,6,7,8,9}. The second set is {10,11,12,13};

    or,

    The first set is {0,1,2,3,4,5,6,7,8,9}, and the second set is {12,13,14,15}.
15. The method according to any one of claims 1 to 14, wherein the first value is 2 and the second value is 7.
16. A communication device, wherein the communication device is specifically a first communication device, and the first communication device includes: a processing module and a transceiver module, wherein:

    The transceiver module is configured to receive control information sent by a second communication device, where the control information indicates the index of the first hybrid automatic repeat request HARQ process corresponding to the first data transmission;

    The processing module is configured to determine the index of the first HARQ process according to the control information;

    The processing module is configured to determine the start time unit used for the first data transmission according to the end time unit and the first delay of the control information, wherein, when the index of the first HARQ process belongs to the first When collecting, the first communication device determines that the first delay is a first number of time units, and when the index of the first HARQ process belongs to the second set, the first communication device determines that the first The delay is the first number of time units or the second number of time units, the first value is not equal to the second value, and the first set and the second set include indexes of different HARQ processes ；

    The transceiver module is configured to receive the first data according to the determined start time unit.
17. The communication device according to claim 16, wherein:

    The transceiver module is configured to receive first information sent by the second communication device, where the first information is used to indicate whether the index of the first HARQ process can or cannot belong to the second set;

    The processing module is configured to, when the first information indicates that the index of the first HARQ process can belong to the second set, when the index of the first HARQ process belongs to the first set, It is determined that the transmission of the first data adopts the asynchronous HARQ mode; when the index of the first HARQ process belongs to the second set, it is determined that the transmission of the first data adopts the synchronous HARQ mode.
18. A communication device, characterized in that, the communication device is specifically a second communication device, and the second communication device includes: a processing module and a transceiver module, wherein:

    The processing module is configured to determine the index of the first hybrid automatic repeat request HARQ process corresponding to the first data transmission;

    The transceiver module is configured to send control information to a first communication device, where the control information indicates the index of the first HARQ process;

    The processing module is configured to determine the start time unit used for the first data transmission according to the end time unit and the first delay of the control information, wherein, when the index of the first HARQ process belongs to the first When collecting, the second communication device determines that the first delay is a first number of time units, and when the index of the first HARQ process belongs to the second set, the second communication device determines that the first The delay is the first number of time units or the second number of time units, the first value is not equal to the second value, and the first set and the second set include indexes of different HARQ processes ；

    The transceiver module is configured to send the first data according to the determined start time unit.
19. The communication device according to claim 18, wherein:

    The transceiver module is configured to send first information to the first communication device, where the first information is used to indicate whether the index of the first HARQ process can or cannot belong to the second set;

    The processing module is configured to, when the first information indicates that the index of the first HARQ process can belong to the second set, when the index of the first HARQ process belongs to the first set, The transmission of the first data adopts the asynchronous HARQ mode; when the index of the first HARQ process belongs to the second set, the transmission of the first data adopts the synchronous HARQ mode.
20. The communication device according to any one of claims 16 to 19, wherein the control information comprises: a first field, wherein:

    When the index of the first HARQ process belongs to the first set, the first field indicates the HARQ confirmation response delay;

    When the index of the first HARQ process belongs to the second set, the first field includes transmission information of a transport block set, or the first field is a reserved field.
21. The communication device according to claim 20, wherein when the index of the first HARQ process belongs to the second set, the first field includes N bits, and the N is a positive integer;

    The N bits of the first field indicate whether each transmission block in the transmission block set is scheduled in a bitmap manner.
22. The communication device according to any one of claims 16 to 19, wherein the control information comprises: a second field and a third field, wherein:

    When the high S bits of the third field indicate the first state, the second field indicates the second number of time units and the index of the first HARQ process, or indicates the first number of time units And the index of the first HARQ process;

    and / or,

    The second state indicated by the low T bits of the third field is used to determine the transmission information of the transmission block;

    Wherein, the S and the T are positive integers.
23. The communication device according to claim 22, wherein the value of T is 2, and the lower 2 bits of the third field are the first bit and the second bit;

    The first bit indicates whether the transmission block is scheduled, and the second bit indicates that the transmission block is a newly transmitted transmission block or a retransmitted transmission block.
24. The communication device according to claim 20 or 21, wherein the HARQ confirmation response delay comprises: D time units, and the value of D is 13 or 14 or 15 or 17 or 19.
25. The communication device according to any one of claims 16 to 19, characterized in that:

    When the first delay is a first numerical time unit, the control information indicates to determine the HARQ confirmation response delay from the first confirmation response delay set;

    When the first time delay is a second numerical time unit, the control information indicates to determine the HARQ confirmation response time delay from the second confirmation response time delay set;

    Wherein, the first set of acknowledgement response delays and the second set of acknowledgement response delays include different HARQ acknowledgement response delays.
26. The communication device according to claim 25, wherein the first confirmation response delay set includes at least one of the following values: 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17 ；

    The second set of acknowledgement response delays includes at least one of the following values: 13, 14, 15, 16, 19, 26;

    Wherein, the value is the number of time units.
27. The communication device according to any one of claims 16 to 26, wherein the control information comprises: a fourth field, wherein:

    When the index of the first HARQ process belongs to the first set, the fourth field indicates the HARQ confirmation response delay;

    When the index of the first HARQ process belongs to the second set, the fourth field indicates the second number of time units and the HARQ confirmation response delay, or indicates the first number of time units And the HARQ confirmation response delay.
28. The communication device according to claim 27, wherein when the index of the first HARQ process belongs to the second set, the fourth field includes Q bits, and the Q is a positive integer;

    The Q bits of the fourth field indicate the first delay in the first delay set, and indicate the HARQ acknowledgement delay in the third acknowledgement delay set;

    Wherein, the first delay set includes at least one of the following values: 2. P, where P is a positive integer greater than or equal to 7;

    The third set of acknowledgement response delays includes at least one of the following values: 4, 5, 7, 13;

    Wherein, the value is the number of time units.
29. The communication device according to any one of claims 16 to 28, wherein the first set is {0,1,2,3,4,5,6,7,8,9}, and the The second set is {10,11,12,13};

    or,

    The first set is {0,1,2,3,4,5,6,7,8,9}, and the second set is {12,13,14,15}.
30. The communication device according to any one of claims 16 to 29, wherein the first value is 2 and the second value is 7.

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