Patent ID: 8711787
Filing Date: 2014-04-29
Classification: H04B

Abstract:
1. A base station comprising: a channel information reception module configured to receive, from a plurality of relay stations, channel information with respect to channels formed between the plurality of relay stations and the base station; a selection module configured to select relay stations from among the plurality of relay stations based on the channel information; a first transmission and reception module configured to, in a first downlink relay sub-frame among downlink sub-frames, transmit downlink relay signals simultaneously to the selected relay stations; and a second transmission and reception module configured to, in a second downlink relay sub-frame among downlink sub-frames, sequentially transmit downlink relay signals to the remaining relay stations using a scheduled radio resource, wherein the selection module is configured to determine relay stations that are capable of simultaneously performing reception to select relay stations from among the plurality of relay stations based on the channel information.