Patent ID: 9288018
Filing Date: 2016-03-15
CPC Classification: H04L

Claim Text:
1. A method for transmitting uplink control information by a user equipment in a wireless communication system supporting carrier aggregation and operating in time division duplexing (TDD), the method comprising: when a specific parameter is less than a specific value, generating, by the user equipment, hybrid automatic repeat request-acknowledgement (HARQ-ACK) bits including an individual bit value corresponding to a respective HARQ-ACK for each of a plurality of component carriers (CCs); when the specific parameter is equal to or greater than the specific value, generating, by the user equipment, the HARQ-ACK bits including bit values corresponding to all HARQ-ACKs for each of the plurality of CCs; and transmitting, by the user equipment, the uplink control information including the generated HARQ-ACK bits, wherein when the specific parameter is 5, the specific value is 5 and a number of the bit values is 2, a mapping relationship between the HARQ-ACKs and the bit values is given by the following table: wherein {(a0, a1), (b0, b1), (c0, c1), (d0, d1)} corresponds to one of {(1, 1), (1, 0), (0, 1), (0, 0)}, {(1, 1), (0, 1), (1, 0), (0, 0)}, {(0, 0), (1, 0), (0, 1), (1, 1)} or {(0, 0), (0, 1), (1, 0), (1, 1)}, and wherein “A” represents ACK (acknowledgement), “D” represents DTX (discontinuous transmission), “N/D” represents NACK (negative ACK) or DTX, and “any” represents one of ACK, NACK or DTX.