Patent ID: 9167583
Filing Date: 2015-10-20
Classification: H04B,H04L,H04W

Abstract:
1. A method for transmitting an uplink signal in a wireless communication system supporting carrier aggregation, the method comprising: configuring, by a mobile terminal, a first cell having a first TDD (Time Division Duplex) UL-DL (Uplink-Downlink) configuration and a second cell different from the first cell and having a second TDD UL-DL configuration different from the first TDD UL-DL configuration; receiving, by the mobile terminal, data through a DL subframe of the first cell; and transmitting, transmitting by the mobile terminal, acknowledgement information on the data through a UL subframe of the second cell, wherein the first cell is a secondary cell and the second cell is a primary cell, wherein, if the first TDD UL-DL configuration and the second TDD UL-DL configuration comprise alternate ones of TDD UL-DL configuration #1 and TDD UL-DL configuration #3, then a relation between the DL subframe of the first cell and the UL subframe of the second cell corresponds to TDD UL-DL configuration #4, wherein, if the first TDD UL-DL configuration and the second TDD UL-DL configuration comprise alternate ones of TDD UL-DL configuration #2 and TDD UL-DL configuration #3, or comprise alternate ones of TDD UL-DL configuration #2 and TDD UL-DL configuration #4, then the relation between the DL subframe of the first cell and the UL subframe of the second cell corresponds to TDD UL-DL configuration #5, wherein the TDD UL-DL configurations #1, #3, #4 and #5 are described in the following table: wherein D denotes a downlink subframe, S denotes a special subframe and U denotes an uplink subframe.