Patent ID: 8331955

Claim:
A method for use by a wireless location system (WLS) associated with a CDMA-based wireless communications network (WCN), comprising: receiving, at a first location measuring unit (LMU), a CDMA downlink signal broadcast by a sector of a base station; determining, by the first LMU, sector timing information for the sector in response to synchronizing with the downlink signal, wherein the determination of sector timing information comprises, determining slot timing information from a received downlink primary synchronization channel; determining frame timing information and a scrambling code group for the sector from a received secondary synchronization channel; determining a scrambling code for the sector from the scrambling code group for the sector and a downlink common pilot channel for the sector; and determining a frame number and a sector identifier for the sector; sending the sector timing information from the first LMU to a second LMU; receiving, at the first and second LMUs, uplink signals from a mobile device communicating with the sector of the base station; determining, at the first and second LMUs, time of arrival information for the uplink signals received at the first and second LMUs using the sector timing information; and determining a geographic location of the mobile device using the time of arrival information.