HARQ transmission enhancement method, communication device, and readable storage medium

Patent metadata

Field	Value
Publication number	US-12526090-B2
Application number	US-202118260341-A
Country	US
Kind code	B2
Filing date	Jan 5, 2021
Priority date	Jan 5, 2021
Publication date	Jan 13, 2026
Grant date	Jan 13, 2026

Abstract

A hybrid automatic repeat request (HARQ) transmission enhancement method includes receiving a downlink transmission sent by a base station, when an abnormal process is needed in sending of a HARQ feedback signal for the downlink transmission, determining whether the HARQ feedback signal satisfies a condition for postponing feedback, and if yes, selecting a physical uplink shared channel (PUSCH) after an originally scheduled sending time unit of the HARQ feedback signal to transmit at least part of the HARQ feedback signal.

First claim

What is claimed is:

1 . A hybrid automatic repeat request (HARQ) transmission enhancement method, comprising:
receiving a downlink transmission sent by a base station; when an abnormal process is needed in sending of a HARQ feedback signal for the downlink transmission, determining whether the HARQ feedback signal satisfies a condition for postponing feedback; and if yes, selecting a physical uplink shared channel (PUSCH) after an originally scheduled sending time unit of the HARQ feedback signal to transmit at least a part of the HARQ feedback signal; wherein before determining whether the HARQ feedback signal satisfies a condition for postponing feedback, the method further comprises: receiving an enabling indication of a postponing HARQ feedback from the base station; wherein the enabling indication of the postponing HARQ feedback is included in a radio resource control (RRC) signaling or a downlink control information (DCI).

2 . The HARQ transmission enhancement method according to claim 1 , wherein a physical downlink shared channel (PDSCH) based on a semi-persistent scheduling (SPS) carries the downlink transmission.

3 . The HARQ transmission enhancement method according to claim 1 , wherein the condition for postponing feedback comprises:
an aggregation factor corresponding to the downlink transmission is greater than a first threshold.

4 . The HARQ transmission enhancement method according to claim 1 , wherein the condition for postponing feedback comprises:
an aggregation factor corresponding to the downlink transmission is less than a second threshold.

5 . The HARQ transmission enhancement method according to claim 1 , further comprising:
if the HARQ feedback signal does not satisfy the condition for postponing feedback, abandon sending the HARQ feedback signal.

6 . The HARQ transmission enhancement method according to claim 1 , wherein determining whether the HARQ feedback signal satisfies the condition for postponing feedback comprises:
selecting a first PUSCH after an originally scheduled time unit of the HARQ feedback signal, and determining whether a PUSCH additionally carries the HARQ feedback signal; if yes, using the PUSCH to additionally carry the HARQ feedback signal for transmission, if not, discarding the HARQ feedback signal.

7 . The HARQ transmission enhancement method according to claim 6 , wherein whether the PUSCH additionally carries the HARQ feedback signal comprises:
determining whether a value of a multiplexing parameter is greater than an amount of information of the HARQ feedback signal according to a preset multiplexing parameter, wherein the multiplexing parameter is configured by the base station in advance; if yes, using the PUSCH to carry the HARQ feedback signal for transmission; if not, discarding the HARQ feedback signal.

8 . The HARQ transmission enhancement method according to claim 1 , wherein determining whether the HARQ feedback signal satisfies the condition for postponing feedback further comprises:
selecting a first PUSCH after an originally scheduled time unit of the HARQ feedback signal, and determining whether a PUSCH additionally carries a transmission of the HARQ feedback signal; if yes, using the PUSCH to additionally carry the HARQ feedback signal; if not, skipping the PUSCH, and selecting a second PUSCH that satisfies a carrying condition from a plurality of PUSCHs included in a preset feedback window to additionally carry and transmit the HARQ feedback signal.

9 . The HARQ transmission enhancement method according to claim 8 , wherein after selecting the second PUSCH that satisfies the carrying condition, the method further comprises:
if there is no second PUSCH satisfying the carrying condition, determining whether a cumulative value of free resources of any plurality of PUSCHs in the feedback window satisfies a need to additionally carry the HARQ feedback signal, and if yes, entering a feedback group transmission operation.

10 . The HARQ transmission enhancement method according to claim 8 , wherein after selecting the second PUSCH that satisfies the carrying condition, the method further comprises:
if there is no second PUSCH satisfying the carrying condition, determining, whether there is any PUSCH in the feedback window that carries part of the HARQ feedback signal, if yes, entering a feedback group transmission operation.

11 . The HARQ transmission enhancement method according to claim 9 , wherein the feedback group transmission operation comprises:
grouping HARQ feedback signals according to preset service attributes to obtain a plurality of feedback groups; selecting the feedback groups in sequence from high to low according to preset priorities corresponding to the service attributes and configuring the feedback groups with a qualified PUSCH within the feedback window to carry and transmit the qualified PUSCH until a PUSCH selection fails.

12 . The HARQ transmission enhancement method according to claim 11 , wherein after the PUSCH selection fails, the method further comprises:
discarding a current feedback group and a feedback group whose priority order is lower than the current feedback group.

13 . A HARQ transmission enhancement method, comprising:
sending an enabling indication of postponing HARQ feedback to a user equipment; sending a downlink transmission to the user equipment; if a HARQ feedback signal sent from the user equipment for the downlink transmission is not received in a feedback time unit corresponding to the downlink transmission, trying to use a physical uplink shared channel (PUSCH) to receive at least a part of the HARQ feedback signal from the user equipment after the feedback time unit; wherein a downlink indication comprises a multiplexing indication comprising a multiplexing parameter, and the multiplexing parameter is used to indicate a number of PUSCH multiplexing bytes allocated to the user equipment.

14 . A communication device, comprising:
a processor; and a communication circuit, wherein the processor is connected to the communication circuit; wherein the processor is configured to: receive a downlink transmission sent by a base station; when an abnormal process is needed in sending of a HARQ feedback signal for the downlink transmission, determine whether the HARQ feedback signal satisfies a condition for postponing feedback; and if yes, select a physical uplink shared channel (PUSCH) after an originally scheduled sending time unit of the HARQ feedback signal to transmit at least a part of the HARQ feedback signal; wherein before the processor determines whether the HARQ feedback signal satisfies a condition for postponing feedback, the processor is configured to receive an enabling indication of a postponing HARQ feedback from the base station, wherein the enabling indication of the postponing HARQ feedback is included in a radio resource control (RRC) signaling or a downlink control information (DCI).

15 . The communication device according to claim 14 , wherein a physical downlink shared channel (PDSCH) based on a semi-persistent scheduling (SPS) carries the downlink transmission.

Assignees

• Jrd Communication Shenzhen Ltd

Inventors

• Yin Xiaoxue
• Sheng Jia

Classifications

• H04W72/11

  Semi-persistent scheduling · CPC title

• H04L1/1854 Primary

  Scheduling and prioritising arrangements · CPC title

• H04L5/0055 Primary

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