An inertial sensor includes a single sense element disposed upon a silicon wafer. 5 weight % and less than 100 weight % and having an acid value in the range of 1103-1 andor a chlorine ion content in the range of 1101-1103 ppm. Alternatively, the polycrystalline silicon may be selectively formed to be used as a mask to elevate and form the impurity diffusion layer to laminate and form the gate insulator film and the gate electrode. In a preferred embodiment, the mobile station receives adjacent cell frequency information broadcast from a resident public targeted base station and performs the cell search based on the frequency information in the transmitted connection information as well as the adjacent cell frequency information.