Patent ID: 8521202
Filing Date: 2013-08-27
Classification: H04W

Abstract:
1. A mobile station device configured to perform a cell search for searching a cell served by a base station device, and to select the base station device to be communicated with the mobile station device, the mobile station device comprising: a moving speed detector configured to detect a moving speed of the mobile station device; a transmitting-and-receiving unit configured to receive a radio wave transmitted from the base station device, and to initiate or to terminate the cell search based on a cell-search control signal input to the transmitting-and-receiving unit; a reception quality calculator configured to calculate a reception quality value indicative of the quality of the radio wave received by the transmitting-and-receiving unit; a threshold storing unit configured to store a threshold value for controlling the cell search; a changing unit configured to change at least one of the threshold value and the reception quality value based on the moving speed detected by the moving speed detector; a reception quality comparator configured to perform at least one of a comparison between the reception quality value and the threshold value changed, a comparison between the reception quality value changed and the threshold value, and a comparison between the reception quality value changed and the threshold value changed; and a control signal generator configured to output the cell-search control signal to the transmitting-and-receiving unit based on a result of the comparison performed by the reception quality comparator.