Feedback information sending method, user equipment, and base station

Patent metadata

Field	Value
Publication number	US-2020137784-A1
Application number	US-201916728996-A
Country	US
Kind code	A1
Filing date	Dec 27, 2019
Priority date	Aug 14, 2015
Publication date	Apr 30, 2020
Grant date	—

Abstract

The present disclosure describes methods, user equipment, and base stations for sending feedback information. One example method includes: sending scheduling information on a downlink control channel to user equipment, wherein the downlink control channel is in a downlink subframe which belongs to a preconfigured downlink subframe set, and the scheduling information is used for scheduling downlink data; determining an uplink subframe for receiving feedback information corresponding to the downlink data, wherein the preconfigured downlink subframe set is a set of downlink subframes that are associated with the uplink subframe and that are of all carriers configured for the user equipment by the base station; sending PUCCH resource indication information to the user equipment for indicating a PUCCH resource.

First claim

What is claimed is:

1 . A feedback information receiving method, comprising:
sending scheduling information on a downlink control channel to user equipment, wherein the downlink control channel is in a downlink subframe that belongs to a preconfigured downlink subframe set, and the scheduling information is used for scheduling downlink data; determining an uplink subframe for receiving feedback information corresponding to the downlink data, wherein the preconfigured downlink subframe set is a set of downlink subframes that are associated with the uplink subframe and that are of all carriers configured for the user equipment by a base station; determining a physical uplink control channel (PUCCH) resource; sending PUCCH resource indication information to the user equipment for indicating the PUCCH resource; and receiving on the PUCCH resource in the uplink subframe, encoded feedback information from the user equipment; wherein the scheduling information comprises a downlink assignment index (DAI) accumulation indication, and the DAI accumulation indication is located in each piece of scheduling information of a scheduled downlink subframe subset, a value of the DAI accumulation indication indicates an accumulative counting in the scheduled downlink subframe set according to an order that is first in ascending order of a carrier index and then in ascending order of a subframe index, and the scheduled downlink subframe subset belongs to the preconfigured downlink subframe set.

2 . The method according to claim 1 , wherein the scheduling information further comprises a DAI total quantity indication, wherein the DAI total quantity indication indicates a sum of a quantity of scheduled carriers corresponding to a current downlink subframe and all downlink subframes before the current downlink subframe in the scheduled downlink subframe subset.

3 . The method according to claim 1 , wherein
a bit quantity of a codebook of the feedback information and the PUCCH resource indication information indicate the PUCCH resource in a preconfigured PUCCH resource set; or the PUCCH resource indication information, a bit quantity of a codebook of the feedback information, and a bit quantity of channel state information (CSI) indicate the PUCCH resource in a preconfigured PUCCH resource set.

4 . The method according to claim 3 , wherein
the bit quantity of a codebook of the feedback information indicates a PUCCH resource subset in the preconfigured PUCCH resource set, and a status of the PUCCH resource indication information indicates the PUCCH resource in the PUCCH resource subset.

5 . The method according to claim 3 , wherein
a bit capacity interval corresponding to the bit quantity of the codebook indicates the PUCCH resource subset in the preconfigured PUCCH resource set.

6 . The method according to claim 5 , wherein the bit capacity interval is predefined or is configured by radio resource control (RRC) signaling.

7 . The method according to claim 3 , wherein the preconfigured PUCCH resource set includes PUCCH resources of multiple different PUCCH formats.

8 . A non-transitory computer-readable storage medium storing instructions that, when executed by a processor, cause a base station to carry out operations of:
sending scheduling information on a downlink control channel to user equipment, wherein the downlink control channel is in a downlink subframe that belongs to a preconfigured downlink subframe set, and the scheduling information is used for scheduling downlink data; determining an uplink subframe for receiving feedback information corresponding to the downlink data, wherein the preconfigured downlink subframe set is a set of downlink subframes that are associated with the uplink subframe and that are of all carriers configured for the user equipment by the base station; determining a physical uplink control channel (PUCCH) resource; sending PUCCH resource indication information to the user equipment for indicating the PUCCH resource; and receiving on the PUCCH resource in the uplink subframe, encoded feedback information from the user equipment; wherein the scheduling information comprises a downlink assignment index (DAI) accumulation indication, and the DAI accumulation indication is located in each piece of scheduling information of a scheduled downlink subframe subset, a value of the DAI accumulation indication indicates an accumulative counting in the scheduled downlink subframe set according to an order that is first in ascending order of a carrier index and then in ascending order of a subframe index, and the scheduled downlink subframe subset belongs to the preconfigured downlink subframe set.

9 . The non-transitory computer-readable storage medium according to claim 8 , wherein the scheduling information further comprises a DAI total quantity indication, wherein the DAI total quantity indication indicates a sum of a quantity of scheduled carriers corresponding to a current downlink subframe and all downlink subframes before the current downlink subframe in the scheduled downlink subframe subset.

10 . The non-transitory computer-readable storage medium according to claim 8 , wherein
a bit quantity of a codebook of the feedback information and the PUCCH resource indication information indicate the PUCCH resource in a preconfigured PUCCH resource set; or the PUCCH resource indication information, a bit quantity of a codebook of the feedback information, and a bit quantity of channel state information (CSI) indicate the PUCCH resource in a preconfigured PUCCH resource set.

11 . The non-transitory computer-readable storage medium according to claim 10 , wherein
the bit quantity of a codebook of the feedback information indicates a PUCCH resource subset in the preconfigured PUCCH resource set, and a status of the PUCCH resource indication information indicates the PUCCH resource in the PUCCH resource subset.

12 . The non-transitory computer-readable storage medium according to claim 10 , wherein
a bit capacity interval corresponding to the bit quantity of the codebook indicates the PUCCH resource subset in the preconfigured PUCCH resource set.

13 . The non-transitory computer-readable storage medium according to claim 12 , wherein the bit capacity interval is predefined or is configured by radio resource control (RRC) signaling.

14 . The non-transitory computer-readable storage medium according to claim 10 , wherein the preconfigured PUCCH resource set includes PUCCH resources of multiple different PUCCH formats.

15 . An apparatus, comprising:
one or more processors, and at least one non-transitory storage medium configure to store program instructions; wherein, when executed by the one or more processors, the instructions cause the apparatus to perform a method that comprises: receiving scheduling information from a base station on a downlink control channel, wherein the downlink control channel is in a downlink subframe that belongs to a preconfigured downlink subframe set, and the scheduling information is used for scheduling downlink data; determining an uplink subframe for sending feedback information corresponding to the downlink data, wherein the preconfigured downlink subframe set is a set of downlink subframes that are associated with the uplink subframe and that are of all carriers configured for the user equipment by the base station; determining a codebook of the feedback information according to a downlink assignment index (DAI) accumulation indication, wherein the DAI accumulation indication is located in each piece of scheduling information of a sched

Assignees

• Huawei Tech Co Ltd

Inventors

• Guan Lei
• Lyu Yongxia
• Yan Zhiyu
• Xiao Jiehua

Classifications

• H04L5/0007

  the frequencies being orthogonal, e.g. OFDM(A) or DMT · CPC title

• H04L5/0082

  at predetermined intervals · CPC title

• H04L5/0094

  Indication of how sub-channels of the path are allocated · CPC title

• H04B7/0626

  Channel coefficients, e.g. channel state information [CSI] · CPC title

• H04L5/0055 Primary

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