Wireless access network base station and method for...

Details Wireless access network base station and method for... Wireless access network base station and method for...

2006-07-12

2009-08-04

Le, Danh C (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S456100, C455S561000, C370S328000, C342S357490, C340S539130

Reexamination Certificate

active

07570962

ABSTRACT:
Embodiments of a base station, a communication system and a method for determining current location information of a mobile station using uplink time-difference of arrival (U-TDOA) in a wireless access network are generally described herein. Other embodiments may be described and claimed. In some embodiments, a first timing adjustment is determined from receipt of the ranging frame from the mobile station within the granted uplink time-slot, and a second timing adjustment is received from the non-serving base station. The second timing adjustment may be determined by the non-serving base station based on receipt of a ranging frame from the mobile station.

REFERENCES:
patent: 6006097 (1999-12-01), Hornfeldt et al.
patent: 6526039 (2003-02-01), Dahlman et al.
patent: 6820031 (2004-11-01), Hayakawa
patent: 6898197 (2005-05-01), Lavean
patent: 2003/0109264 (2003-06-01), Syrjarinne et al.
patent: 2004/0102165 (2004-05-01), Bloebaum et al.
patent: 2004/0258042 (2004-12-01), Kauhanen

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