Patent ID: 7239619
Filing Date: 2007-07-03
Classification: H04M,H04W

Abstract:
1. A mobile communication system comprising a mobile station and a plurality of base stations, wherein the mobile station comprises: cell selection reference receiving means for, on the occasion of a handover from a first base station to a second base station as a base station for the mobile station to be connected, receiving a first cell selection reference signal from the first base station and a second cell selection reference signal from the second base station out of cell selection reference signals broadcasted by the respective base stations, each cell selection reference signal containing identification information for identification of a base station and a cell established by the base station; cell selection reference received power measuring means for measuring received power values of the first and second cell selection reference signals received by the cell selection reference receiving means; uplink transmitted power acquiring means for acquiring a first uplink transmitted power value and a second uplink transmitted power value, which are transmitted powers of respective uplinks from the mobile station to the first base station and to the second base station; and cell control information transmitting means for transmitting to the first base station, first cell control information based on at least the received power value of the first cell selection reference signal, the first and second uplink transmitted power values, and the first identification information included in the first cell selection reference signal, and for transmitting to the second base station, second cell control information based on at least the received power value of the second cell selection reference signal, the first and second uplink transmitted power values, and the second identification information included in the second cell selection reference signal; and wherein each of the base stations comprises: cell selection reference broadcasting means for broadcasting the cell selection reference signal; and cell controlling means for acquiring the cell control information transmitted to the relevant base station by the cell control information transmitting means of the mobile station and for, based on the cell control information, controlling a power of the cell selection reference signal broadcasted by the cell selection reference broadcasting means into the cell established by the relevant base station specified by the identification information in the cell control information, so that the first and second uplink transmitted power values become substantially equal and so that a received power value at the mobile station of the cell selection reference signal broadcasted by the relevant base station becomes substantially equal to a predetermined reference power value.