Patent ID: 6307840
Filing Date: 2001-10-23
Classification: H04B,H04J

Abstract:
A method for time synchronizing a second base station with a first base station comprising the steps of:measuring a round trip delay interval of transmissions from the first base station to a mobile station in communication with the first base station and back from the mobile station to the first base station;communicating information from the first base station to the second base station to assist the second base station in receiving communications from the mobile station;receiving at the second base station communications transmitted by the mobile station and noting the time of reception;determining at the second base station, an estimate of the delay which occurs between transmission by the mobile station and reception by the second base station;computing a timing correction value based upon the estimate of the delay, time of reception at the second base station of the transmission from the mobile station to the second base station, and the measured round trip delay interval.