Patent ID: 9510334
Filing Date: 2016-11-29
CPC Classification: H04J,H04L,H04W

Claim Text:
1. A method of reporting control information in a wireless communication system in which a plurality of downlink time divisional duplex (TDD) subframes are associated with an uplink TDD subframe, the method comprising: receiving, by a user equipment (UE) supporting at least one cell including a primary cell, resource allocation information used for a first physical uplink control channel (PUCCH) format; selecting, by the UE, a PUCCH format among a plurality of PUCCH formats including the first PUCCH format and a second PUCCH format, wherein the second PUCCH format is selected if the UE receives a first physical downlink shared channel (PDSCH) in one of the plurality of downlink TDD subframes on the primary cell, wherein the UE receives a second PDSCH with a downlink assignment index (DAI) in one of the plurality of downlink TDD subframes on the primary cell, wherein the UE does not receive a first physical downlink control channel (PDCCH) corresponding to the first PDSCH on the primary cell, and wherein the UE receives a second PDCCH corresponding to the second PDSCH; and in response to the first and second PDSCHs, transmitting, by the UE, a positive-acknowledgement (ACK)/negative-acknowledgement (NACK) signal by using the selected PUCCH format.