Method and apparatus for setting HARQ RRT timer in carrier aggregation system

摘要

A method and apparatus for setting a HARQ RRT timer in a carrier aggregation system. The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and apparatus for setting a HARQ RRT timer in a carrier aggregation system, wherein a base station sets up a plurality of cells including at least one FDD serving cell and at least one TDD serving cell. And transmitting data in subframe n through a secondary cell corresponding to an FDD serving cell among a plurality of cells, and if the primary cell is a TDD serving cell among a plurality of cells, Retransmitting data in frame m (m ≧ n + k + 4), where k is the interval between downlink transmission and HARQ feedback transmission associated with downlink transmission. [Selection] Figure 9