Patent ID: 8520612

Claim:
A method for radio resource control carried out in a radio communications system including a plurality of base stations, the method comprising the steps of: subdividing a radio resource that can be used by the base stations into a plurality of first radio resources on the frequency axis, allocating a first set of one or more of the first radio resources to a second radio resource for initially transmitting a packet, and allocating a second set of first radio resources other than the first set of first radio resources to a third radio resource for retransmitting the packet, wherein a transmission power of the third radio resource is set to be smaller than the transmission power of the second radio resource, wherein the second and third radio resources of a first base station are set to bet different from the second and third radio resources of an adjacent second base station, wherein the third radio resource includes a fourth radio resource for retransmitting the packet for a first time and a fifth radio resource for retransmitting the packet for a second time, wherein the transmission power of the fourth radio resource is set to be smaller than the transmission power of the second radio resource, wherein the transmission power of the fifth radio resource is set to be smaller than the transmission power of the fourth radio resource, and wherein the fourth and fifth radio resources of the first base station are set to be different from the fourth and fifth radio resources of the adjacent second base station.