Patent ID: 9584266
Date: 2017-02-28
CPC Classifications: H04L,H04W

Claim:
1. A method for performing a hybrid automatic repeat request (HARQ) process in a wireless communication system supporting carrier aggregation, the method comprising: setting a scheduling cell having a first uplink-downlink (UL-DL) configuration and a scheduled cell having a second UL-DL configuration; and performing a HARQ process in the scheduled cell based on a number of HARQ processes for the scheduled cell, wherein, when a combination of the first UL-DL configuration and the second UL-DL configuration corresponds to a UL-DL configuration combination of a first set, the number of HARQ processes for the scheduled cell is determined as a number of available uplink subframes * N (N≧2), wherein, when a combination of the first UL-DL configuration and the second UL-DL configuration corresponds to a UL-DL configuration combination of a second set other than the first set, the number of HARQ processes for the scheduled cell is determined as the number of available uplink subframes +N (N≧1), wherein subframe configurations according to the UL-DL configurations are defined as follows: wherein D denotes a downlink subframe, S denotes a special subframe and U denotes an uplink subframe, wherein the UL-DL configuration combination of the first set is defined as (UL-DL configuration of the scheduling cell, UL-DL configuration of the scheduled cell), and wherein the UL-DL configuration combination of the first set includes at least one of (0, 1), (0, 2), (0, 3), (0, 4), (0, 5), (0, 6), (1, 3), (2, 3), (3, 1), (3, 2), (6, 1), (6, 2), (6, 3), (6, 4) and (6, 5).