US Patent No. 10,433,329

METHODS FOR SENDING AND RECEIVING FEEDBACK INFORMATION, USER EQUIPMENT, AND ACCESS NETWORK DEVICE


Patent No. 10,433,329
Issue Date October 01, 2019
Title Methods For Sending And Receiving Feedback Information, User Equipment, And Access Network Device
Inventorship Lei Guan, Beijing (CN)
Yongxia Lyu, Beijing (CN)
Zhiyu Yan, Shenzhen (CN)
Jiehua Xiao, Shanghai (CN)
Assignee Huawei Technologies Co., Ltd., Shenzhen (CN)

Claim of US Patent No. 10,433,329

1. A method for sending feedback information, comprising:receiving, by user equipment (UE) in a downlink subframe in a preconfigured downlink subframe set, downlink data that is sent by an access network device by using a downlink shared channel, and a downlink assignment index (DAI) index indicator and a DAI total quantity indicator that are sent by the access network device by using a downlink control channel;
determining, by the UE, an uplink subframe for sending feedback information corresponding to the downlink shared channel, wherein the preconfigured downlink subframe set is a set that is associated with the uplink subframe and that consists of all downlink subframes of carriers preconfigured for the UE;
determining, by the UE, a codebook of the feedback information according to the DAI index indicator and the DAI total quantity indicator, wherein the codebook corresponds to all downlink subframes in a real-time scheduling downlink subframe subset, the real-time scheduling downlink subframe subset is a set that consists of downlink subframes actually scheduled by the access network device, and the real-time scheduling downlink subframe subset is a subset of the preconfigured downlink subframe set;
performing, by the UE, channel coding on the feedback information according to the codebook; and
sending, by the UE in the uplink subframe, the channel coded feedback information to the access network device;
wherein the value of a DAI index indicator corresponding to each downlink subframe in the real-time scheduling downlink subframe subset is: a count value obtained by performing an accumulative count on the subframes in the real-time scheduling downlink subframe subset in a preset order; and in the real-time scheduling downlink subframe subset, the value of a DAI total quantity indicator of each downlink subframe in a first order combination corresponding to a current subframe sequence number is: a sum of a current quantity and a historical quantity, wherein the current quantity is a total quantity of downlink shared channels scheduled in the downlink subframes in the first order combination corresponding to the current subframe sequence number, and the historical quantity is a total quantity of downlink shared channels scheduled in each downlink subframe in the first order combinations corresponding to subframe sequence numbers of all downlink subframes before a subframe moment of the current subframe sequence number in the real-time scheduling downlink subframe subset.