Patent ID: 9160516
Filing Date: 2015-10-13
Classification: H04L,H04W

Abstract:
1. A method for transmitting uplink control information by a user equipment (UE) in a TDD (Time Division Duplex) wireless communication system including a base station (BS) and configured with a plurality of serving cells including a first serving cell having a first UL/DL (Uplink/Downlink) configuration and a second serving cell that is aggregated with the first serving cell for communications between the BS and the UE and has a second UL/DL configuration that is different from the first UL/DL configuration, the method comprising: receiving, by the UE from the BS, a signal in a downlink subframe via the second serving cell having the second UL/DL configuration; and in response to the signal, transmitting, by the UE to the BS, a HARQ-ACK (Hybrid Automatic Repeat reQuest-Acknowledgement) response in an uplink subframe, wherein a location of the uplink subframe of the second serving cell within a sequence of second serving cell UL/DL subframes is restricted to be common with a location of the uplink subframe of the first serving cell within a sequence of first serving cell UL/DL subframes, the sequence of first serving cell UL/DL subframes being different from the sequence of second serving cell UL/DL subframes.