Patent ID: 6483825
Filing Date: 2002-11-19
Classification: H04B,H04H

Abstract:
A time synchronization method for synchronizing the time of a plurality of base stations in a CDMA system and the time of a base station controller that controls each of these base stations, comprising the steps of:providing the base station controller with a GPS receiver for receiving signals from GPS satellites and generating a reference time based upon the received signals; adopting the reference time generated by the GPS receiver as the time of the base station controller; and measuring a transmission delay time from the base station controller to each base station and regarding the transmission delay time as time correction data; transmitting, from the base station controller to each base station, data for specifying said reference time and said time correction data for each base station; and in each base station, synchronizing the time of each base station to that of the base station controller based upon the received data for specifying said reference time and said time correction data for each base station.