Patent ID: 8254245
Filing Date: 2012-08-28
Classification: H04L,H04W

Abstract:
1. A method for transmitting a control channel in a mobile communication system, the method comprising: modulating information bits to generate a plurality of modulation symbols according to a predetermined modulation scheme; interleaving the plurality of modulation symbols using a block interleaver for each of a plurality of modulation symbol groups, wherein each of the plurality of modulation symbol groups includes at least one modulation symbol set comprised of a plurality of continuous modulation symbols of the plurality of modulation symbols; mapping the plurality of modulation symbol groups to resource elements allocated for transmitting at least one physical downlink control channel (PDCCH) in a subframe; and transmitting the at least one PDCCH, wherein the interleaving comprises: inputting the plurality of modulation symbol groups row by row to the block interleaver; performing inter-column permutation for the plurality of modulation symbol groups based on a predetermined permutation pattern; and outputting the plurality of modulation symbol groups column by column from the block interleaver, and wherein the plurality of modulation symbol groups are cyclically shifted using a cell identifier.