| 摘要 |
PROBLEM TO BE SOLVED: To enhance the efficiency of hand-over by a different frequency with respect to a hand-over method, a base station, a mobile station and a mobile communication system in a CDMA mobile communication system. SOLUTION: In the case of a hand-over for the mobile communication system that includes a mobile station 3 and a plurality of distributed base stations 11, 12,... and where frequencies f1, f2 for a traffic channel for the base stations 11, 12 differ from each other, the traffic channel of the base station 11 in the compression mode are transmitted repetitively twice by compressing 2 frames into a one-frame time in the unit of, e.g., 4 frames in the usual mode, the mobile station 3 selects a reception frequency of the current traffic channel or a reception frequency of a perch channel of the base station 12 being a mobile destination for a 2-frame period of the usual mode based on a head timing of a frame of the perch channel, restores a reception frame of the traffic channel in the compression mode to apply reception processing to the frame and extracts a system frame number by two frames of the perch channel. |
