IP Library › Granted Patent US 11,902,996
Granted Patent B2
US 11,902,996 · App. 17/903,376 · Granted Feb 13, 2024

Hybrid automatic repeat request (HARQ) based on codeblock groups in new radio systems

Inventors: Hong He (Beijing, CN); Debdeep Chatterjee (San Jose, CA); Gang Xiong (Beaverton, OR); Hwan-Joon Kwon (Portland, OR); Sergey Sosnin (Zavolzhie, RU); Yongjun Kwak (Portland, OR)
Assignee: Apple Inc.
H04W72/23H04L1/1812H04L1/1887H04L1/1896H04W72/044H04W72/12H04L1/08
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 11,902,996
App. No.
17/903,376
Granted
Feb 13, 2024
Kind
B2
Abstract

Embodiments of a User Equipment (UE), Generation Node-B (gNB) and methods of communication are disclosed herein. The UE may receive a physical downlink control channel (PDCCH) that schedules a physical downlink shared channel (PDSCH) in a slot, and on a component carrier (CC) of a plurality of CCs. The PDCCH may include a total downlink assignment index (DAI) and a counter DAI for hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback of the PDSCH. The total DAI may indicate a total number of pairs of CCs and slots for the HARQ-ACK feedback. The UE may encode the HARQ-ACK feedback to include a bit that indicates whether the PDSCH is successfully decoded. A size of the HARQ-ACK feedback may be based on the total DAI, and a position of the bit may be based on the counter DAI.

Claims (33)

1. A method, comprising:

decoding a physical downlink control channel (PDCCH) that schedules a physical downlink shared channel (PDSCH) in a scheduled slot of a plurality of slots, the PDSCH further scheduled on a scheduled current component carrier (CC) of a plurality of CCs, wherein the plurality of CCs comprises different sub-carrier spacings, wherein the PDCCH comprises a downlink control information (DCI) that comprises:

a total downlink assignment index (DAI) for hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback, wherein the total DAI is updated from scheduling instance to scheduling instance, wherein a first CC of the plurality of CCs has additional scheduling instances in comparison to a second CC of the plurality of CCs and the total DAI indicates a number of scheduling instances up to a current scheduling instance in which PDSCH transmission(s) associated with PDCCH or PDCCH indicating that a downlink (DL) semi-persistent scheduling (SPS) release is present; and

a counter DAI based on an accumulative number of scheduling instances up to the current scheduling instance in which PDSCH transmission(s) associated with PDCCH or PDCCH indicating that a DL SPS release is present; and

encoding the HARQ-ACK feedback based on the total DAI and the counter DAI.

2. The method of claim 1 , wherein the HARQ-ACK feedback includes per transport block (TB) HARQ-ACK information.

3. The method of claim 1 , wherein the HARQ-ACK feedback includes per transport block (TB) HARQ-ACK information and per code block group (CBG) HARQ-ACK information.

4. The method of claim 3 , wherein the per TB HARQ-ACK information is included in a per TB sub-codebook and the per CBG HARQ-ACK information is included in a per CBG sub-codebook.

5. The method of claim 4 , wherein the HARQ-ACK feedback includes a concatenation of the per TB sub-codebook and per CBG sub-codebook.

6. The method of claim 5 , wherein separate counter DAIs and total DAIs apply to each of the per TB sub-codebook and per CBG sub-codebook.

7. The method of claim 1 , wherein separate counter DAIs and total DAIs apply to each HARQ-ACK sub-codebook.

8. An apparatus, comprising:

a processor configured to cause a user equipment device (UE) to:

decode a physical downlink control channel (PDCCH) that schedules a physical downlink shared channel (PDSCH) in a scheduled slot of a plurality of slots, the PDSCH further scheduled on a scheduled current component carrier (CC) of a plurality of CCs, wherein the plurality of CCs comprises different sub-carrier spacings, wherein the PDCCH comprises a downlink control information (DCI) that comprises:

a total downlink assignment index (DAI) for hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback, wherein the total DAI is updated from scheduling instance to scheduling instance, wherein a first CC of the plurality of CCs has additional scheduling instances in comparison to a second CC of the plurality of CCs and the total DAI indicates a number of scheduling instances up to a current scheduling instance in which PDSCH transmission(s) associated with PDCCH or PDCCH indicating that a downlink (DL) semi-persistent scheduling (SPS) release is present; and

a counter DAI based on an accumulative number of scheduling instances up to the current scheduling instance in which PDSCH transmission(s) associated with PDCCH or PDCCH indicating that a DL SPS release is present; and

encode the HARQ-ACK feedback based on the total DAI and the counter DAI.

9. The apparatus of claim 8 , wherein the HARQ-ACK feedback includes per transport block (TB) HARQ-ACK information.

10. The apparatus of claim 8 , wherein the HARQ-ACK feedback includes per transport block (TB) HARQ-ACK information and per code block group (CBG) HARQ-ACK information.

11. The apparatus of claim 10 , wherein the per TB HARQ-ACK information is included in a per TB sub-codebook and the per CBG HARQ-ACK information is included in a per CBG sub-codebook.

12. The apparatus of claim 11 , wherein the HARQ-ACK feedback includes a concatenation of the per TB sub-codebook and per CBG sub-codebook.

13. The apparatus of claim 12 , wherein separate counter DAIS and total DAIs apply to each of the per TB sub-codebook and per CBG sub-codebook.

14. The apparatus of claim 8 , wherein separate counter DAIS and total DAIs apply to each HARQ-ACK sub-codebook.

15. The apparatus of claim 8 , further comprising a radio operably coupled to the processor.

16. A method, comprising:

transmitting, to a user equipment (UE), a physical downlink control channel (PDCCH) that schedules a physical downlink shared channel (PDSCH) in a scheduled slot of a plurality of slots, the PDSCH further scheduled on a scheduled current component carrier (CC) of a plurality of CCs, wherein the plurality of CCs comprises different sub-carrier spacings, wherein the PDCCH comprises a downlink control information (DCI) that comprises:

a total downlink assignment index (DAI) for hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback, wherein the total DAI is updated from scheduling instance to scheduling instance, wherein a first CC of the plurality of CCs has additional scheduling instances in comparison to a second CC of the plurality of CCs and the total DAI indicates a number of scheduling instances up to a current scheduling instance in which PDSCH transmission(s) associated with PDCCH or PDCCH indicating that a downlink (DL) semi-persistent scheduling (SPS) release is present; and

a counter DAI based on an accumulative number of scheduling instances up to the current scheduling instance in which PDSCH transmission(s) associated with PDCCH or PDCCH indicating that a DL SPS release is present; and

receiving, from the UE, the HARQ-ACK feedback based on the total DAI and the counter DAI.

17. The method of claim 16 , wherein the HARQ-ACK feedback includes per transport block (TB) HARQ-ACK information.

18. The method of claim 16 , wherein the HARQ-ACK feedback includes per transport block (TB) HARQ-ACK information and per code block group (CBG) HARQ-ACK information.

19. The method of claim 18 , wherein the per TB HARQ-ACK information is included in a per TB sub-codebook and the per CBG HARQ-ACK information is included in a per CBG sub-codebook.

20. The method of claim 19 , wherein the HARQ-ACK feedback includes a concatenation of the per TB sub-codebook and per CBG sub-codebook.