Single point location tracking for a mobile device in a...

Details Single point location tracking for a mobile device in a... Single point location tracking for a mobile device in a...

2011-07-12

2011-07-12

Ly, Nghi H (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S456500, C455S456600

Reexamination Certificate

active

07979079

ABSTRACT:
Briefly, in accordance with one or more embodiments, the location of a mobile device within a floor plan of a building or the like environment may be determined using a single transmission link between transceiver and the mobile device. A bit error rate value and a receiver signal strength indication value are measured for the present location of the mobile device in the floor plan. The coordinates where the mobile device is located may be determined by looking up the measured bit error rate value and the received signal strength indication value in a lookup table. Due to environmental factors of the floor plan, the combination of the bit error rate value and the received signal strength indication value corresponds to a unique coordinate location in the floor plan from which the location of the mobile device may be determined.

REFERENCES:
patent: 2005/0181804 (2005-08-01), Misikangas et al.
patent: 2005/0185618 (2005-08-01), Friday et al.
patent: 2005/0266855 (2005-12-01), Zeng et al.
P. Bahl V. Padmanabhan, “A Software System for Locating Mobile Users: Design, Evaluation & Lessons,” Microsoft Research Technical Report TR-2000-12, Feb. 2000.

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