Patent ID: 8942142
Filing Date: 2015-01-27
Classification: H04L

Abstract:
1. A method for improving acknowledgement/negative-acknowledgement (ACK/NACK) bundling in a user equipment (UE) of a wireless communication system, the method comprising: receiving an uplink (UL) grant allocated to an uplink sub-frame, the uplink sub-frame being utilized for transmitting a hybrid automatic repeat request (HARQ) feedback corresponding to a downlink (DL) sub-frame; if a time division duplex (TDD) UL/DL configuration of the UE is set to 0, determining whether the UE misses any downlink assignment according to a downlink assignment index (DAI) carried in latest received Physical Downlink Control Channel (PDCCH) signaling for downlink assignment; if a time division duplex (TDD) UL/DL configuration of the UE is set to 1-6, determining whether the UE misses any downlink assignment according to a DAI carried in a received PDCCH signaling for the uplink grant; and transmitting the HARQ (Hybrid Automatic Repeat Request) feedback based on the determination whether the UE misses any downlink assignment.