RADIO COMMUNICATION BASE STATION, RADIO POSITION FINDING SYSTEM, TRANSMISSION TIMING-MEASURING APPARATUS AND POSITION FINDING CENTER APPARATUS

摘要

PROBLEM TO BE SOLVED: To prevent errors in radio position finding which result from a transmission timing offset caused by a cable between a base station apparatus and an antenna, etc.;SOLUTION: A transmission timing-measuring means synchronized by a GPS is set to each of base station apparatuses, so that a transmission timing is corrected by a feedback process. Alternatively, measured results of the transmission timing-measuring means are sent to the center apparatus, and the transmission timing offset value is taught to a terminal and compensated in accordance with a request of the terminal. Since the transmission timing offset of the radio base station is thus compensated for, a position finding accuracy is improved.;COPYRIGHT: (C)2002,JPO