Estimating altitude of a communications device

Details Estimating altitude of a communications device Estimating altitude of a communications device

2006-03-28

2006-03-28

Phan, Dao (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Position indicating

Reexamination Certificate

active

07019693

ABSTRACT:
The altitude of a communications device, which communicates with a communications system via at least one antenna, is estimated. The altitude estimation is based at least on altitude information of said at least one antenna. The altitude estimate of the communications device may be based on a two-dimensional location estimate for the communications device and on information representing three-dimensional location of said at least one antenna of said communication system. The two-dimensional location estimate and the altitude estimate may be sent to the communications device as location assistance information.

REFERENCES:
patent: 6061018 (2000-05-01), Sheynblat
patent: 6614382 (2003-09-01), Cannaday et al.
patent: 6735542 (2004-05-01), Burgett et al.
patent: 6741203 (2004-05-01), Woodell
patent: 6756938 (2004-06-01), Zhao et al.
patent: 2003/0006930 (2003-01-01), Lodwig et al.
3GPP, Digital Cellular Telecommunications System (Phase 2+); Universal Mobile Telecommunications System (UMTS); Universal Geographical Area Description (GAD) (3GPP TS 23.032, version 4.1.1, Release 4) ETSI TS 123 032, V4.1.(Jan. 2003).

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