Patent ID: 8699427
Filing Date: 2014-04-15
Classification: H04L,H04W

Abstract:
1. An OFDMA communication system for performing communication using one or more subchannels between a base station and a plurality of terminals, the communication system comprising: a downlink frame generation circuit which generates a downlink frame for a downlink period for performing communication from the base station to at least one terminal of the plurality of terminals; an uplink frame generation circuit which generates an uplink frame for an uplink period for performing communication from at least one terminal of the plurality of terminals to the base station; a channel allocation circuit which allocates, for one terminal of the plurality of terminals, one or more subchannels available in the one terminal, wherein the channel allocation circuit allocates, among the subchannels, each of the subchannels having a same time slot among a plurality of time slots in a time-axis direction and a same frequency band among a plurality of frequency bands in a frequency-axis direction in the downlink frame and in the uplink frame for a single terminal of the plurality of terminals, the channel allocation circuit notifies allocation information indicating the allocated subchannels for a sequence pair of the downlink and uplink frames to the one terminal by each downlink frame, and the channel allocation is made for each sequence pair of the downlink and uplink frames, and each time the channel allocation is made, allocation information indicating the allocated subchannels is notified by each downlink frame.