RADIO BASE STATION, RELAY STATION AND RADIO COMMUNICATION METHOD

摘要

The present invention is designed to increase the capacity of backhaul links between radio base stations and relay stations. The present invention is designed so that a radio base station (BS) non-orthogonal-multiplexes downlink signals for a plurality of communication devices including at least one relay station, over the same radio resource, with different transmission power, and transmits the downlink signals to the plurality of communication devices with the different transmission power, and a relay station (RS) cancels interference by a downlink signal for another communication device, which is non-orthogonal-multiplexed in the radio base station, over the same radio resource, with the different transmission power, so as to receive a downlink signal for a lower communication device connected to the subject station, as a downlink signal for the subject station, and transmits the downlink signal to the lower communication device, using a radio resource that is different from the radio resource that is used in non-orthogonal-multiplexing in the radio base station.

主权项

1. A radio base station that is connected to a relay station via a backhaul link and communicates with a user terminal via the relay station, the radio base station comprising:
a multiplexing section that non-orthogonal-multiplexes downlink signals for a plurality of communication devices including at least one relay station, over a same radio resource, with different transmission power; and a transmission section that transmits the downlink signals to the plurality of communication devices with the different transmission power.