Patent ID: 8477641

Claim:
A radio communication system, comprising: a calculator that calculates an index for determining a priority order for controlling a transmission timing based upon timing information associated with a timing at which a signal is transmitted from each mobile station to a base station, or communication information associated with communication of each mobile station; a priority order determining unit that determines the priority order based upon said calculated index; and an allocating unit that allocates channel resources for communicating information, which is employed at the moment of modifying a shift of said transmission timing, to the mobile stations in a descending order of the priority, to begin with the mobile station of which said determined priority order is high, wherein said calculator calculates the index based upon at least one of extra-Cyclic-Prefix timing shift occurrence information indicative of existence of the mobile station being in a situation of a transmission timing causing interference to occur in a signal transmitted to the base station, Discontinuous Reception (DRX) operation information indicative of lengths of a wake-up time and a sleep time of the mobile station that repeats an activation status and a sleep status, and of a timing of transition to each status, Timing Advance (TA) information indicative of a shift of the transmission timing, transmission path estimation information associated with a transmission path of each mobile station, communication service information indicative of kinds of communication services of each mobile station, and an elapsed time since modification of the transmission timing shift performed in the past, and wherein said calculator calculates the index that is in proportion to a timing shift sample value being obtained from the TA information, a signal level value being obtained from the transmission path estimation information, a real-time value being obtained from the communication service information, and the elapsed time, and is in inverse proportion to a DRX remaining activation time being obtained from the Discontinuous Reception operation information.