Patent ID: 8223704
Filing Date: 2012-07-17
Classification: H04L,H04W

Abstract:
1. A method of assigning subchannels by a transmitter in a communication system, the method comprising: dividing, by the transmitter, an entire frequency band into m subcarrier groups; mapping, by the transmitter, each of the m subcarrier groups to a subcarrier group index, wherein a subchannel includes n subcarriers selected from each of the m subcarrier groups corresponding to a subcarrier group index sequence, determining, by the transmitter, that a first data is needed to transmit in a first timing point; and assigning, by the transmitter, a first subchannel in the first timing point using a first subcarrier group index sequence, wherein the first subcarrier group index sequence is different from a second subcarrier group index sequence used for assigning a second subchannel in a second timing point, and wherein the first subcarrier group index sequence is generated by interleaving corresponding to: where Π(k) represents an interleaving formula, β represents a subchannel index of the first subchannel, k represents locations of the subcarriers included in the first subchannel, a represents an integer, and (Q−1) represents a number of subcarriers in each subchannel.