Location finding using a single base station in cdma/tdma...

Details Location finding using a single base station in cdma/tdma... Location finding using a single base station in cdma/tdma...

H - Electricity

04

Q

H04Q 7/36 (2006.01) G01S 3/14 (2006.01) G01S 3/32 (2006.01) G01S 5/12 (2006.01) G01S 13/84 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2321395

A location or position of a wireless mobile unit is determined using only measurements from a single base station. A distance between the wireless mobile unit and the base station is calculated utilizing a roundtrip delay value of an RF uplink signal received from a wireless mobile unit. Thereafter, an angle of arrival of the received signal is determined using measurements of the received signal from each of a plurality of antenna sectors of a multi-sector antenna. The angle of arrival is determined based upon stored antenna signal measurements of the multi-sector antenna, wherein a combination of different sector signal measurements corresponds to a single angle measurement. Using the determined distance and angle of arrival, a position or location of a wireless mobile unit can easily be determined using only measurements of the single base station.

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