method for allocating channels used for allocation of high-speed physical downlink shared channels to a plurality of cells under the same base station, device for allocating channels located at a base station and configured to allocate high-physical physical downlink shared channels speed for a plurality of cells under the base station, method for allocating available resources from a base station that is used to allocate available resources for a plurality of cells under the base station, method for allocating available resources from a base station that is used to allocate available resources to a plurality of cells under the same base station