Feedback information receiving method, base station and user equipment

Patent metadata

Field	Value
Publication number	US-11071134-B2
Application number	US-201916728996-A
Country	US
Kind code	B2
Filing date	Dec 27, 2019
Priority date	Aug 14, 2015
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

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:
determining an uplink subframe for receiving feedback information corresponding to downlink data;
determining a physical uplink control channel (PUCCH) resource;
sending scheduling information for scheduling the downlink data, 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 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;
receiving on the PUCCH resource in the uplink subframe, encoded feedback information from the user equipment;
wherein the scheduling information comprises PUCCH resource indication information and a downlink assignment index (DAI) accumulation indication, and
the PUCCH resource indication information indicates the PUCCH resource, and a value of the DAI accumulation indication indicates an accumulative counting in a scheduled downlink subframe subset 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 sub set.

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 a 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:
determining an uplink subframe for receiving feedback information corresponding to the downlink data;
determining a physical uplink control channel (PUCCH) resource;
sending scheduling information for scheduling the downlink data, 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 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;
receiving on the PUCCH resource in the uplink subframe, encoded feedback information from the user equipment;
wherein the scheduling information comprises PUCCH resource indication information and a downlink assignment index (DAI) accumulation indication, and
the PUCCH resource indication information indicates the PUCCH resource, and a value of the DAI accumulation indication indicates an accumulative counting in a scheduled downlink subframe subset 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 a 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 user equipment by the base station;
determining a codebook of the feedback information according to a downlink assignment index (DAI) accumulation indication, wherein a value of the DAI accumulation indication indicates an accumulative counting in the scheduled downlink subframe subset according to an order that is first in ascending order of a carrier index and then in ascending order of a subframe index, the codebook corresponds to a scheduled downlink subframe subset, and the scheduled downlink subframe subset belongs to the preconfigured downlink subframe set;
determining a physical uplink control channel (

Assignees

• Huawei Tech Co Ltd

Inventors

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

Classifications

• H04W72/21

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04W72/20 Primary

  Control channels or signalling for resource management · CPC title

• H04L5/0082

  at predetermined intervals · CPC title

• H04L5/0007

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

• H04L5/0094

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