Patent ID: 7764647

Claim:
A communications system, including a base station and a plurality of terminals, the base station communicating wirelessly with the terminals over a plurality of channels, the terminals each reporting reception quality information for a reception signal to the base station, the base station scheduling communications over the channels according to the reception quality information reported by the terminals, the terminals each comprising: a reception quality measuring section for measuring reception quality of reception signals for the channels; and a reception quality information determining section for generating, for reporting to the base station, representative reception quality information for each subgroup (i) by a 2-step grouping scheme by which the channels are divided into subgroups and the subgroups are divided into groups and (ii) according to the reception quality measured by the reception quality measuring section, wherein: the groups are allocated to the terminals by the 2-step grouping scheme; and the reception quality information determining section in each terminal generates, for reporting, the representative reception quality information only for each subgroup that belongs to the group(s) allocated to that terminal.