A mobile communication system comprising: a first base station; and a relay station adapted to conduct a wireless relay between the first base station and a mobile station, wherein the relay station is adapted to notify the first base station of type information indicating a type of whether or not the relay station itself is a movable relay station (20_1), wherein the first base station is adapted to perform, for the relay station, at least one of configuration and control according to the type, characterized in that when the type indicates the movable relay station (20_1), the first base station is adapted to allocate, upon the configuration, a reference signal specific to a cell formed by the first base station itself as a reference signal for causing the movable relay station (20_1) to demodulate a radio signal from the first base station itself and is adapted to instruct the movable relay station (20_1) to transmit an uplink backhaul signal using higher power than that used by a fixed relay station (20_2), which the type does not indicate the movable relay station (20_1), or to instruct the movable relay station (20_1) to perform modulation at a smaller number of its multiple levels and a lower coding rate than those of the fixed relay station (20_2) for the generation of the uplink backhaul signal, and when the type does not indicate the movable relay station (20_1), the first base station is adapted to allocate, upon the configuration, the reference signal specific to the fixed relay station (20_2) as a reference signal for causing the fixed relay station (20_2) to demodulate a radio signal from the first base station itself. a first base station; and a relay station adapted to conduct a wireless relay between the first base station and a mobile station, wherein the relay station is adapted to notify the first base station of type information indicating a type of whether or not the relay station itself is a movable relay station (20_1), wherein the first base station is adapted to perform, for the relay station, at least one of configuration and control according to the type, characterized in that when the type indicates the movable relay station (20_1), the first base station is adapted to allocate, upon the configuration, a reference signal specific to a cell formed by the first base station itself as a reference signal for causing the movable relay station (20_1) to demodulate a radio signal from the first base station itself and is adapted to instruct the movable relay station (20_1) to transmit an uplink backhaul signal using higher power than that used by a fixed relay station (20_2), which the type does not indicate the movable relay station (20_1), or to instruct the movable relay station (20_1) to perform modulation at a smaller number of its multiple levels and a lower coding rate than those of the fixed relay station (20_2) for the generation of the uplink backhaul signal, and when the type does not indicate the movable relay station (20_1), the first base station is adapted to allocate, upon the configuration, the reference signal specific to the fixed relay station (20_2) as a reference signal for causing the fixed relay station (20_2) to demodulate a radio signal from the first base station itself.