Patent ID: 8655377
Filing Date: 2014-02-18
Classification: G01S,H04W

Abstract:
1. A method for use in locating a mobile device, comprising: causing the mobile device to receive beacon signals from a serving base transceiver station (BTS) and one or more adjacent BTSs, wherein each BTS is located at a cell site and each beacon signal includes cell identification (CID) information; detecting a number of sibling pairs based on the received beacon signals, wherein a sibling pair comprises two downlink transmission antennae that are co-sited sectors of a multi-sector cell site; and selecting a predefined location method based on the number of sibling pairs detected; wherein, if a sibling pair is detected at a sectored cell site, either a single site location method or an adjacent site location method is selected, and a bearing/angle from the sectored cell site to the mobile device is determined from power measurements from the sibling pair and knowledge of a spatial response and orientation of sector antennae associated with the sibling pair.