초록 ▼

In the present invention, the slave base station attains synchronization with the reference base station through messages transmitted from and received by a mobile station in the soft handoff region between the reference base station and the slave base station. First, the round trip delay between th

In the present invention, the slave base station attains synchronization with the reference base station through messages transmitted from and received by a mobile station in the soft handoff region between the reference base station and the slave base station. First, the round trip delay between the mobile station and the reference base station is measured by the reference base station. Once the mobile station acquires the signal from the slave base station, it measures and reports the difference between the amount of time it takes a signal to travel from the reference base station to it and the amount of time it takes a signal to travel from the slave base station to it. The last measurement necessary is a measurement by the slave base station of the time difference between the time it received the reverse link signal from the mobile and station the time it transmitted a signal to the mobile station. A series of computations described in detail herein are performed upon the measured time values to determine the time difference between the slave base station and an adjustment of the slave base station timing is performed in accordance therewith.

대표청구항 ▼

[ We claim:] [11.] A method for time synchronizing a slave base station with a reference base station, comprising the steps of:measuring at said reference base station a round trip delay for at least one transmission from said reference base station to a mobile station and a transmission from said m

[ We claim:] [11.] A method for time synchronizing a slave base station with a reference base station, comprising the steps of:measuring at said reference base station a round trip delay for at least one transmission from said reference base station to a mobile station and a transmission from said mobile station to said reference base station;acquiring at said slave station a transmission from said mobile station;adjusting said slave base station time reference, if necessary, to allow said mobile station to receive a transmission from said slave base station;acquiring at said mobile station a transmission from said slave station;measuring at said mobile station a first time difference between the time of receipt at said mobile station of a transmission from said slave base station and the time of receipt at said mobile station of a transmission from said reference base station;communicating said first time difference to said reference base station and said slave base station;measuring at said slave base station a round trip delay for at least one transmission between said slave base station and said mobile station, said round trip delay corresponding to the time a transmission is received at said slave base station from said mobile station and the time a related transmission is transmitted from said slave base station to said mobile station; andcomputing at a base station controller a timing correction value for said slave station in accordance with said measurements.