阅读说明：本技术 用于半静态harq-ack码本确定的回落操作的方法及设备 (Method and apparatus for fallback operation for semi-static HARQ-ACK codebook determination ) 是由 雷海鹏 汪海明 颜智 喻晓冬 于 2018-02-13 设计创作，主要内容包括：本发明涉及用于半静态HARQ-ACK码本确定的回落操作的方法及设备。本发明的一个实施例提供一种设备,其包括：接收器,其接收下行链路DL关联集内的至少一个DL传输；处理器,其确定是否使用回落混合自动重传请求应答HARQ-ACK传输；及发射器,其响应于所述回落HARQ-ACK传输被使用而在所述DL关联集的第一资源上传输第一HARQ-ACK码本或响应于所述回落HARQ-ACK传输未被使用而在所述DL关联集的第二资源上传输第二HARQ-ACK码本。(The invention relates to a method and equipment for fallback operation of semi-static HARQ-ACK codebook determination. One embodiment of the present invention provides an apparatus, comprising: a receiver that receives at least one DL transmission within a downlink DL association set; a processor that determines whether to acknowledge HARQ-ACK transmission using a fallback hybrid automatic repeat request; and a transmitter that transmits a first HARQ-ACK codebook on a first resource of the DL association set in response to the fallback HARQ-ACK transmission being used or a second HARQ-ACK codebook on a second resource of the DL association set in response to the fallback HARQ-ACK transmission not being used.)

1. An apparatus, comprising:

a receiver that receives at least one DL transmission within a downlink DL association set;

a processor that determines whether to acknowledge HARQ-ACK transmission using a fallback hybrid automatic repeat request; and

a transmitter that transmits a first HARQ-ACK codebook on a first resource of the DL association set in response to the fallback HARQ-ACK transmission being used or a second HARQ-ACK codebook on a second resource of the DL association set in response to the fallback HARQ-ACK transmission not being used.

2. The apparatus of claim 1, wherein the processor:

determining to use the fallback HARQ-ACK transmission in response to the number of the at least one DL transmission not being greater than N, where N is a positive integer.

3. The apparatus of claim 1, wherein the processor:

determining at least one HARQ-ACK bit required for HARQ-ACK feedback corresponding to the at least one DL transmission; and

determining to use the fallback HARQ-ACK transmission in response to the number of the at least one HARQ-ACK bit not being greater than Z, where Z is a positive integer.

4. The apparatus of claim 1, wherein

Each of the at least one DL transmission includes an indicator indicating whether the fallback HARQ-ACK transmission is to be used; and the processor:

determining to use the fallback HARQ-ACK transmission in response to the indicator indicating that the fallback HARQ-ACK transmission is to be used.

5. The apparatus of claim 1, wherein

Each of the at least one DL transmission comprises an indicator indicating whether a single DL transmission is transmitted in the DL association set; and the processor:

determining to use the fallback HARQ-ACK transmission in response to the indicator indicating that a single DL transmission is transmitted in the DL association set.

6. The apparatus of claim 1, wherein

Each of the at least one DL transmission comprises an indicator indicating whether the number of the at least one DL transmission in the DL association set is not greater than X; and the processor:

determining to use the fallback HARQ-ACK transmission in response to the indicator indicating that the number of the at least one DL transmission in the DL association set is not greater than X, where X is a positive integer.

7. The apparatus of claim 1, wherein

Each of the at least one DL transmission comprises a total DL Assignment Index (DAI) indicating a total number of the at least one DL transmission in the DL association set; and the processor:

determining to use the fallback HARQ-ACK transmission in response to the value of the total DAI not being greater than Y, where Y is a positive integer.

8. The apparatus of claim 4, wherein the indicator is included in a DL assignment.

9. The apparatus of claim 1, wherein the first HARQ-ACK codebook contains a single HARQ-ACK bit.

10. The apparatus of claim 1, wherein the first HARQ-ACK codebook contains a single HARQ-ACK bit transmitted in the DL association set in response to a single DL transmission; transmitting in the DL association set in response to a single DL transmission and the single DL transmission carrying two transport block TBs including two HARQ-ACK bits; transmitting a single DL transmission in the DL association set in response to the single DL transmission and the single DL transmission configured for Code Block Group (CBG) -based retransmission includes M HARQ-ACK bits, where M is a configured maximum number of CBGs per TB.

11. The apparatus of claim 1, wherein the first resource is determined based on a lowest Control Channel Element (CCE) index of a Physical Downlink Control Channel (PDCCH) associated with the DL transmission.

12. The apparatus of claim 1, wherein the first resource is indicated by an associated DL assignment from a set of resources configured by RRC signaling.

13. The apparatus of claim 1, wherein the receiver further receives Radio Resource Control (RRC) signaling to enable the fallback HARQ-ACK transmission.

14. The apparatus of claim 1, wherein the first HARQ-ACK codebook is carried in a physical uplink control channel, PUCCH, and a format of the PUCCH is configured by RRC signaling.

15. An apparatus, comprising:

a transmitter that transmits at least one DL transmission within a DL association set;

a processor that determines whether a fallback HARQ-ACK transmission is to be used; and

a receiver to receive a first HARQ-ACK codebook on first resources of the DL association set in response to the fallback HARQ-ACK transmission being used or a second HARQ-ACK codebook on second resources of the DL association set in response to the fallback HARQ-ACK transmission not being used.

16. The apparatus of claim 15, wherein the processor

Determining that the fallback HARQ-ACK transmission is to be used in response to the number of the at least one DL transmission not being greater than N, where N is a positive integer.

17. The apparatus of claim 15, wherein the processor

Determining at least one HARQ-ACK bit required for HARQ-ACK feedback corresponding to the at least one DL transmission;

determining that the fallback HARQ-ACK transmission is to be used in response to the number of the at least one HARQ-ACK bit not being greater than Z, where Z is a positive integer.

18. The apparatus of claim 15, wherein each of the at least one DL transmissions comprises an indicator indicating whether the fallback HARQ-ACK transmission is to be used.

19. The apparatus of claim 15, wherein each of the at least one DL transmission comprises an indicator indicating whether a single DL transmission is transmitted in the DL association set.

20. The apparatus of claim 15, wherein each of the at least one DL transmission comprises an indicator indicating whether the number of the at least one DL transmission in the DL association set is not greater than X; and the processor:

determining that the fallback HARQ-ACK transmission is to be used in response to the number of the at least one DL transmission in the DL association set not being greater than X, where X is a positive integer.

21. The apparatus of claim 15, wherein

Each of the at least one DL transmission comprises a total DL Assignment Index (DAI) indicating a total number of the at least one DL transmission in the DL association set; and the processor:

determining that the fallback HARQ-ACK transmission is to be used in response to the value of the total DAI not being greater than Y, where Y is a positive integer.

22. The apparatus of claim 18, wherein the indicator is included in a DL assignment.

23. The apparatus of claim 15, wherein the first HARQ-ACK codebook contains a single HARQ-ACK bit.

24. The apparatus of claim 15, wherein the first HARQ-ACK codebook contains a single HARQ-ACK bit transmitted in the DL association set in response to a single DL transmission; transmitting in the DL association set in response to a single DL transmission and the single DL transmission carrying two transport block TBs including two HARQ-ACK bits; transmitting a single DL transmission in the DL association set in response to the single DL transmission and the single DL transmission configured for Code Block Group (CBG) -based retransmission includes M HARQ-ACK bits, where M is a configured maximum number of CBGs per TB.

25. The apparatus of claim 15, wherein a resource having a lowest control channel element, CCE, index linked to a physical downlink control channel, PDCCH, associated with the DL transmission is assigned as a first resource.

26. The apparatus of claim 15, wherein the transmitter transmits a DL assignment to indicate the first resource from a set of resources configured by RRC signaling.

27. The apparatus of claim 15, wherein the transmitter transmits Radio Resource Control (RRC) signaling for enabling the fallback HARQ-ACK transmission.

28. The apparatus of claim 15, wherein the first HARQ-ACK codebook is carried in a physical uplink control channel, PUCCH, and a format of the PUCCH is configured by RRC signaling.

29. A method, comprising:

receiving at least one DL transmission within a DL association set;

determining whether to use fallback HARQ-ACK transmission; and

transmitting a first HARQ-ACK codebook on a first resource of the DL association set in response to the fallback HARQ-ACK transmission being used or transmitting a second HARQ-ACK codebook on a second resource of the DL association set in response to the fallback HARQ-ACK transmission not being used.

30. The method of claim 29, wherein the step of determining whether to use a fallback HARQ-ACK transmission comprises:

determining to use the fallback HARQ-ACK transmission in response to the number of the at least one DL transmission not being greater than N, where N is a positive integer.

31. The method of claim 29, wherein the step of determining whether to use a fallback HARQ-ACK transmission comprises:

determining at least one HARQ-ACK bit required for HARQ-ACK feedback corresponding to the at least one DL transmission; and

determining to use the fallback HARQ-ACK transmission in response to the number of the at least one HARQ-ACK bit not being greater than Z, where Z is a positive integer.

32. The method of claim 29, wherein

Each of the at least one DL transmission includes an indicator indicating whether the fallback HARQ-ACK transmission is to be used; and the step of determining whether to use a fallback HARQ-ACK transmission comprises:

determining to use the fallback HARQ-ACK transmission in response to the indicator indicating that the fallback HARQ-ACK transmission is to be used.

33. The method of claim 29, wherein

Each of the at least one DL transmission comprises an indicator indicating whether a single DL transmission is transmitted in the DL association set; and the step of determining whether to use a fallback HARQ-ACK transmission comprises:

determining to use the fallback HARQ-ACK transmission in response to the indicator indicating that a single DL transmission is transmitted in the DL association set.

34. The method of claim 29, wherein

Each of the at least one DL transmission comprises an indicator indicating whether the number of the at least one DL transmission in the DL association set is not greater than X; and the step of determining whether to use a fallback HARQ-ACK transmission comprises:

determining to use the fallback HARQ-ACK transmission in response to the indicator indicating that the number of the at least one DL transmission in the DL association set is not greater than X, where X is a positive integer.

35. The method of claim 29, wherein

Each of the at least one DL transmission comprises a total DL Assignment Index (DAI) indicating a total number of the at least one DL transmission in the DL association set; and the step of determining whether to use a fallback HARQ-ACK transmission comprises:

determining to use the fallback HARQ-ACK transmission in response to the value of the total DAI not being greater than Y, where Y is a positive integer.

36. The method of claim 32, wherein the indicator is included in a DL assignment.

37. The method of claim 29 wherein the first HARQ-ACK codebook contains a single HARQ-ACK bit.

38. The method of claim 29, wherein the first HARQ-ACK codebook contains a single HARQ-ACK bit transmitted in the DL association set in response to a single DL transmission; transmitting in the DL association set in response to a single DL transmission and the single DL transmission carrying two transport block TBs including two HARQ-ACK bits; transmitting a single DL transmission in the DL association set in response to the single DL transmission and the single DL transmission configured for Code Block Group (CBG) -based retransmission includes M HARQ-ACK bits, where M is a configured maximum number of CBGs per TB.

39. The method of claim 29, wherein the first resource is determined based on a lowest Control Channel Element (CCE) index of a Physical Downlink Control Channel (PDCCH) associated with the DL transmission.

40. The method of claim 29, wherein the first resource is indicated by an associated DL assignment from a set of resources configured by RRC signaling.

41. The method of claim 29, further comprising receiving Radio Resource Control (RRC) signaling for enabling the fallback HARQ-ACK transmission.

42. The method of claim 29 wherein the first HARQ-ACK codebook is carried in a physical uplink control channel, PUCCH, and a format of the PUCCH is configured by RRC signaling.

43. A method, comprising:

transmitting at least one DL transmission within the DL association set;

determining whether a fallback HARQ-ACK transmission is to be used; and

receiving a first HARQ-ACK codebook on a first resource of the DL association set in response to the fallback HARQ-ACK transmission being used or receiving a second HARQ-ACK codebook on a second resource of the DL association set in response to the fallback HARQ-ACK transmission not being used.

44. The method of claim 43, further comprising:

determining that the fallback HARQ-ACK transmission is to be used in response to the number of the at least one DL transmission not being greater than N, where N is a positive integer.

45. The method of claim 43, further comprising:

determining at least one HARQ-ACK bit required for HARQ-ACK feedback corresponding to the at least one DL transmission;

determining that the fallback HARQ-ACK transmission is to be used in response to the number of the at least one HARQ-ACK bit not being greater than Z, where Z is a positive integer.

46. The method of claim 43, wherein each of the at least one DL transmission comprises an indicator indicating whether the fallback HARQ-ACK transmission is to be used.

47. The method of claim 43, wherein each of the at least one DL transmission comprises an indicator indicating whether a single DL transmission is transmitted in the DL association set.

48. The method of claim 43, wherein each of the at least one DL transmission comprises an indicator indicating whether the number of the at least one DL transmission in the DL association set is not greater than X; and the method further comprises:

determining that the fallback HARQ-ACK transmission is to be used in response to the number of the at least one DL transmission in the DL association set not being greater than X, where X is a positive integer.

49. The method of claim 43, wherein

Each of the at least one DL transmission comprises a total DL Assignment Index (DAI) indicating a total number of the at least one DL transmission in the DL association set; and the method further comprises:

determining that the fallback HARQ-ACK transmission is to be used in response to the value of the total DAI not being greater than Y, where Y is a positive integer.

50. The method of claim 46, wherein the indicator is included in a DL assignment.

51. The method of claim 43 wherein the first HARQ-ACK codebook includes a single HARQ-ACK bit.

52. The method of claim 43, wherein the first HARQ-ACK codebook includes a single HARQ-ACK bit transmitted in the DL association set in response to a single DL transmission; transmitting in the DL association set in response to a single DL transmission and the single DL transmission carrying two transport block TBs including two HARQ-ACK bits; transmitting a single DL transmission in the DL association set in response to the single DL transmission and the single DL transmission configured for Code Block Group (CBG) -based retransmission includes M HARQ-ACK bits, where M is a configured maximum number of CBGs per TB.

53. The method of claim 43, wherein a resource having a lowest Control Channel Element (CCE) index linked to a Physical Downlink Control Channel (PDCCH) associated with the DL transmission is assigned as a first resource.

54. The method of claim 43, further comprising transmitting a DL assignment to indicate the first resource from a set of resources configured by RRC signaling.

55. The method of claim 43, further comprising transmitting Radio Resource Control (RRC) signaling for enabling the fallback HARQ-ACK transmission.

56. The method of claim 43 wherein the first HARQ-ACK codebook is carried in a Physical Uplink Control Channel (PUCCH) and a format of the PUCCH is configured by RRC signaling.

Technical Field

The present invention relates generally to a 3GPP5G New Radio (NR), and more particularly to a 3GPP5G new radio for HARQ-ACK transmission of NR downlink data transmissions.

Background

In wireless communication technology, a HARQ-ACK feedback technique is typically used during data transmission in order to feedback whether data is correctly received in Downlink (DL) or Uplink (UL) transmission. HARQ-ACK collectively means positive Acknowledgement (ACK) and Negative Acknowledgement (NACK). An ACK means that the data unit was received correctly, and a NACK means that the data unit was received in error or that the data unit was lost. HARQ-ACK feedback bits corresponding to a Physical Downlink Shared Channel (PDSCH) are transmitted on a Physical Uplink Control Channel (PUCCH) or on a Physical Uplink Shared Channel (PUSCH). The HARQ-ACK feedback for multiple PDSCHs may be multiplexed in one HARQ-ACK codebook by means of HARQ-ACK multiplexing.

There are two HARQ-ACK codebook determination methods, semi-static and dynamic. For semi-static HARQ-ACK codebooks, the benefit is that the codebook size determination is rather simple. However, the disadvantage is that it causes too much overhead. Therefore, a way to reduce the overhead in the HARQ-ACK codebook is desired.

Disclosure of Invention

One embodiment of the present invention provides an apparatus, comprising: a receiver to receive at least one Downlink (DL) transmission within a DL association set; a processor that determines whether to use a fallback hybrid automatic repeat request acknowledgement (HARQ-ACK) transmission; and a transmitter that transmits a first HARQ-ACK codebook on a first resource of the DL association set in response to the fallback HARQ-ACK transmission being used or a second HARQ-ACK codebook on a second resource of the DL association set in response to the fallback HARQ-ACK transmission not being used.

Another embodiment of the present invention provides an apparatus, comprising: a transmitter that transmits at least one Downlink (DL) transmission within a DL association set; a processor that determines whether a fallback hybrid automatic repeat request acknowledgement (HARQ-ACK) transmission is to be used; and a receiver that receives a first HARQ-ACK codebook on a first resource of the DL association set in response to the fallback HARQ-ACK transmission being used or a second HARQ-ACK codebook on a second resource of the DL association set in response to the fallback HARQ-ACK transmission not being used.

Yet another embodiment of the present invention provides a method comprising: receiving at least one Downlink (DL) transmission within a DL association set; determining whether to use a fallback hybrid automatic repeat request acknowledgement (HARQ-ACK) transmission; and transmitting a first HARQ-ACK codebook on a first resource of the DL association set in response to the fallback HARQ-ACK transmission being used or transmitting a second HARQ-ACK codebook on a second resource of the DL association set in response to the fallback HARQ-ACK transmission not being used.

Yet another embodiment of the present invention provides a method comprising: transmitting at least one Downlink (DL) transmission within a DL association set; determining whether a fallback hybrid automatic repeat request-acknowledgement (HARQ-ACK) transmission is to be used; and receiving a first HARQ-ACK codebook on a first resource of the DL association set in response to the fallback HARQ-ACK transmission being used or receiving a second HARQ-ACK codebook on a second resource of the DL association set in response to the fallback HARQ-ACK transmission not being used.

Drawings

Fig. 1 illustrates an example block diagram of a wireless communication system in accordance with an embodiment of this disclosure.

Fig. 2 illustrates a downlink association set in which fallback operation will not be used according to an embodiment of the present invention.

Fig. 3 illustrates a downlink association set in which a fallback operation will be used in accordance with an embodiment of the present invention.

FIG. 4 illustrates a flow diagram of a method according to an embodiment of the invention.

FIG. 5 illustrates a flow diagram of a method according to an embodiment of the invention.

FIG. 6 illustrates a flow diagram of a method according to an embodiment of the invention.

FIG. 7 illustrates an example block diagram of a remote unit in accordance with an embodiment of this disclosure.

FIG. 8 illustrates an example block diagram of a base unit in accordance with an embodiment of this disclosure.

Detailed Description

The detailed description of the drawings is intended as a description of the presently preferred embodiments of the invention and is not intended to represent the only forms in which the present invention may be practiced. It is to be understood that the same or equivalent functions may be accomplished by different embodiments that are intended to be encompassed within the spirit and scope of the invention.