Patent ID: 7336641
Filing Date: 2008-02-26
Classification: H04B,H04W

Abstract:
1. A method for determining a mutual time difference of signals transmitted between a first base station and a second base station in an asynchronous code division multiplexing access (CDMA) system, the asynchronous CDMA system having at least one other base station and forming at least three pairs of two adjacent base stations, the method comprising the steps of: (a) for each pair of the at least three pairs of two adjacent base stations, measuring time difference of signals transmitted between two adjacent base stations of said pair, obtaining an adjusted time difference corresponding to said pair, and obtaining an accuracy of the adjusted time difference; (b) determining a set of all possible paths between said first base station and said second base station, wherein each path of said set of all possible paths comprises at least one pair of two adjacent base stations; and (c) providing weights to the obtained adjusted time differences corresponding to pair(s) of two adjacent base stations included in each path of said set of all possible paths.