Use of mobile stations for determination of base station...

Details Use of mobile stations for determination of base station... Use of mobile stations for determination of base station...

2006-10-24

2006-10-24

Furguson, Keith (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S456200, C455S456500, C455S456600, C455S422100, C455S414100, C455S414200, C455S561000

Reexamination Certificate

active

07127257

ABSTRACT:
In a wireless communication network, base station antenna positions and time offsets are stored in a base station almanac data base along with other information used for obtaining the most reliable mobile station position fixes under a variety of conditions. The system uses the position fixes of mobile stations and terrestrial ranging information to determine base station antenna positions and base station timing offsets. The base station antenna positions are determined during normal mobile station position determinations, in order to maintain and improve the antenna location data, and to correct for change or relocation of the base station antennas. It is possible to recover quickly from a loss of cell sector identity during relocation of a base station antenna, and to ensure accuracy of mobile station position determination based on ranging from the base stations, and rapid acquisition of position data from mobile stations having global satellite receivers.

REFERENCES:
patent: 6128501 (2000-10-01), Ffoulkes-Jones
patent: 6167275 (2000-12-01), Oros et al.
patent: 6445927 (2002-09-01), King et al.
patent: 2002/0022482 (2002-02-01), Ishikawa
patent: 2003/0195008 (2003-10-01), Mohi et al.

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