Patent ID: 8315229
Filing Date: 2012-11-20
Classification: H04W

Abstract:
1. A method of facilitating acquisition, by a mobile station in radio communication with an anchor base station, of data representing distances between the mobile station and base stations of an active set of base stations in radio communication with the mobile station, the active set including a subset of neighbor base stations of the anchor base station, the method comprising: transmitting, from the anchor base station to each other base station of the active set, a ranging resource signal identifying a reference code and a reference time associated with the mobile station; causing the mobile station to transmit a ranging signal including the reference code to each base station of the active set at a time in response to the reference time, such that each base station of the active set receives the ranging signal at a respective time; receiving, from each base station of the active set, a respective offset signal identifying a respective difference in time between the reference time and the respective time when the base station of the active set received the ranging signal; and transmitting, to the mobile station, a ranging control signal in response to the respective offset signals.