US Patent No. 10,602,517

HARQ FEEDBACK USING CARRIER AGGREGATION


Patent No. 10,602,517
Issue Date March 24, 2020
Title Harq Feedback Using Carrier Aggregation
Inventorship Fredrik Berggren, Kista (SE)
Yan Cheng, Beijing (CN)
Lixia Xue, Beijing (CN)
David Jean-marie Mazzarese, Beijing (CN)
Assignee HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)

Claim of US Patent No. 10,602,517

1. A method, comprising:receiving, by a terminal device, data carried in one or both of:
a subframe on a downlink data channel of a downlink Frequency-Division Duplexing (FDD) carrier, and
a downlink subframe on a downlink data channel of a Time-Division Duplexing (TDD) carrier;
determining, by the terminal device, whether the data has been correctly received;
selecting, by the terminal device, a sequence and a modulation symbol, or selecting, by the terminal device, a modulation symbol, to form a hybrid automatic repeat request (HARQ) feedback indicating whether the data has been correctly received; and
transmitting, by the terminal device, the HARQ feedback on a scheduling request resource in an uplink control channel subframe in an uplink FDD carrier;wherein spatial bundling is performed in the uplink control channel subframe if the uplink control channel subframe is assigned for HARQ feedback of both the subframe on the downlink data channel of the downlink FDD carrier and the downlink subframe on the downlink data channel of the TDD carrier, and spatial bundling is not performed in the uplink control channel subframe if the uplink control channel subframe is assigned only for HARQ feedback of the subframe on the downlink data channel of the downlink FDD carrier.