Systems and methods of HARQ codebook determination for multiple PUCCH

Patent metadata

Field	Value
Publication number	US-12375222-B2
Application number	US-202418650446-A
Country	US
Kind code	B2
Filing date	Apr 30, 2024
Priority date	May 3, 2019
Publication date	Jul 29, 2025
Grant date	Jul 29, 2025

Abstract

Systems and methods of HARQ codebook determination for multiple PUCCH are disclosed. In some embodiments, a method performed by a base station for constructing a semi-static HARQ codebook for each of multiple PUCCH resources in an uplink slot, each of the multiple PUCCH resources carrying HARQ feedback for PDSCH transmissions within a certain downlink time interval. The base station, based on a TDRA table, determines a sub-TDRA table for each downlink time interval comprising entries of the TDRA table with a TDRA ending in the downlink time interval. This includes pruning each sub-TDRA table to remove entries with overlapping TDRAs. The semi-static HARQ codebook is constructed for each pruned sub-TDRA table based on the remaining entries in the pruned sub-TDRA tables. The semi-static HARQ codebook is transmitted to the wireless device. In this way, it is possible to construct a semi-static HARQ codebook for multiple PUCCH transmission within a slot.

First claim

What is claimed is:

1. A method performed by a base station for constructing, for a wireless device, a semi-static Hybrid Automatic Repeat Request, HARQ, codebook for each of multiple Physical Uplink Control Channel, PUCCH, resources in an uplink slot, each of the multiple PUCCH resources carrying HARQ feedback for Physical Downlink Shared Channel, PDSCH, transmissions within a certain downlink time interval, the method comprising:
based on a Time Domain Resource Allocation, TDRA, table comprising a list of TDRA entries configured for the wireless device, determining a sub-TDRA table for each downlink time interval comprising entries of the TDRA table with a TDRA ending in the downlink time interval;
pruning each sub-TDRA table to remove entries with overlapping TDRAs;
constructing a semi-static HARQ codebook for each pruned sub-TDRA table based on the remaining entries in the pruned sub-TDRA tables; and
using the semi-static HARQ codebooks for receiving HARQ feedback in the uplink slot.

2. The method of claim 1 further comprising:
reserving one bit in the semi-static HARQ codebook for each remaining entry of each sub-TDRA table.

3. The method of claim 1 further comprising:
reserving multiple bits in the semi-static HARQ codebook based on multiple Transport Blocks, TBs, and Code-Block Groups, CBGs.

4. The method of claim 1 wherein pruning each sub-TDRA table comprises:
for the downlink slots that are only overlapped by one DL time interval, the TDRA table pruning algorithm as in Rel-15 can be applied pruning each sub-TDRA table.

5. The method of claim 1 wherein constructing each semi-static HARQ codebook comprises constructing each semi-static HARQ codebook based on the PDSCH correspondence to the multiple PUCCH transmissions in the slot.

6. The method of claim 1 wherein constructing each semi-static HARQ codebook further comprises dividing the PDSCHs that can be acknowledged within the slot into multiple groups each corresponding to one uplink sub-slot for a PUCCH transmission that is used to carry the corresponding HARQ feedback.

7. A method performed by a wireless device for enabling feedback for multiple Physical Downlink Shared Channel, PDSCH, transmissions, the method comprising:
constructing a semi-static Hybrid Automatic Repeat Request, HARQ, codebook for each of multiple Physical Uplink Control Channel, PUCCH, resources in an uplink slot, each of the multiple PUCCH resources carrying HARQ feedback for Physical Downlink Shared Channel, PDSCH, transmissions within a certain downlink time interval, wherein each semi-static HARQ codebook is constructed based on remaining entries in a pruned sub-Time Domain Resource Allocation, TDRA, table, the sub-TDRA table being determined for one of the downlink time intervals to comprise entries of a TDRA table with a TDRA ending in the downlink time interval, the TDRA table being configured for the wireless device; and the pruned sub-TDRA table being pruned to remove entries with overlapping TDRAs; and
transmitting, to the base station, feedback for multiple PDSCH transmissions based on the semi-static HARQ codebooks.

8. The method of claim 7 wherein each semi-static HARQ codebook is constructed by reserving one bit in the semi-static HARQ codebook for each remaining entry of the pruned sub-TDRA table.

9. The method of claim 7 wherein each semi-static HARQ codebook is constructed by reserving multiple bits in the semi-static HARQ codebook based on multiple Transport Blocks, TBs, and Code-Block Groups, CBGs.

10. The method of claim 7 wherein, for the downlink slots that are only overlapped by one downlink time interval, the TDRA table pruning algorithm as in Rel-15 is applied to each sub-TDRA table.

11. The method of claim 7 wherein each semi-static HARQ codebook is constructed based on the PDSCH correspondence to the multiple PUCCH transmissions in the slot.

12. The method of claim 7 wherein the each semi-static HARQ codebook further comprises: the PDSCHs that can be acknowledged within a slot are divided into multiple groups each corresponding to one Uplink sub-slot for a PUCCH transmission that is used to carry the corresponding HARQ feedback.

13. A base station for constructing, for a wireless device, a semi-static Hybrid Automatic Repeat Request, HARQ, codebook for each of multiple Physical Uplink Control Channel, PUCCH, resources in an uplink slot, each of the multiple PUCCH resources carrying HARQ feedback for Physical Downlink Shared Channel, PDSCH, transmissions within a certain downlink time interval, the base station comprising:
one or more processors; and
memory comprising instructions to cause the base station to:
based on a Time Domain Resource Allocation, TDRA, table comprising a list of TDRA entries configured for the wireless device, determine a sub-TDRA table for each downlink time interval comprising entries of the TDRA table with a TDRA ending in the downlink time interval;
prune each sub-TDRA table to remove entries with overlapping TDRAs;
construct a semi-static HARQ codebook for each pruned sub-TDRA table based on the remaining entries in the pruned sub-TDRA tables; and
using the semi-static HARQ codebooks for HARQ feedback in the uplink slot.

14. The base station of claim 13 further comprising instructions to cause the base station to:
reserve one bit in the semi-static HARQ codebook for each remaining entry of each sub-TDRA table.

15. The base station of claim 13 further comprising instructions to cause the base station to:
reserve multiple bits in the semi-static HARQ codebook based on multiple Transport Blocks, TBs, and Code-Block Groups, CBGs.

16. The base station of claim 13 wherein pruning each sub-TDRA table comprises instructions to cause the base station to:
for the downlink slots that are only overlapped by one DL time interval, the TDRA table pruning algorithm as in Rel-15 can be applied pruning each sub-TDRA table.

17. A wireless device for enabling feedback for multiple Physical Downlink Shared Channel, PDSCH, channels, the wireless device comprising:
one or more processors; and
memory storing instructions executable by the one or more processors, whereby the wireless device is operable to:
constructing a semi-static Hybrid Automatic Repeat Request, HARQ, codebook for each of multiple Physical Uplink Control Channel, PUCCH, resources in an uplink slot, each of the multiple PUCCH resources carrying HARQ feedback for Physical Downlink Shared Channel, PDSCH, transmissions within a certain downlink time interval; where each semi-static HARQ codebook is constructed based on remaining entries in a pruned sub-Time Domain Resource Allocation, TDRA, table, the sub-TDRA table being determined for one of the downlink time intervals to comprise entries of a TDRA table with a TDRA ending in the downlink time interval, the TDRA table being configured for the wireless device; and the pruned sub-TDRA table being pruned to remove entries with overlapping TDRAs; and
transmit, to the base station, feedback for multiple data channels based on the semi-static HARQ codebooks.

18. The wireless device of claim 17 wherein each semi-static HARQ codebook is constructed by reserving one bit in the semi-static HARQ codebook for each remaining entry of the pruned sub-TDRA table.

19. The wireless device of claim 17 wherein each semi-static HARQ codebook is constructed by reserving multiple bits in the semi-static HARQ codebook based on multiple Transport Blocks, TBs, and Code-Block Groups, CBGs.

20. The wireless device of claim

Assignees

• Ericsson Telefon Ab L M

Inventors

• Falahati Sorour
• Baldemair Robert
• Behravan Ali

Classifications

• H04L5/0092 Primary

  Indication of how the channel is divided · CPC title

• H04L5/0082

  at predetermined intervals · CPC title

• H04L5/0055

  Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861) · CPC title

• H04L1/1896

  ARQ related signaling · CPC title

• H04L1/1812

  Hybrid protocols; Hybrid automatic repeat request [HARQ] · CPC title