Method of providing context information for a mobile device

Details Method of providing context information for a mobile device Method of providing context information for a mobile device

2011-04-05

2011-04-05

Kincaid, Lester (Department: 2617)

Telecommunications

Radiotelephone system

Emergency or alarm communication

C455S440000

Reexamination Certificate

active

07920844

ABSTRACT:
A method of providing context information regarding a mobile station includes using cell transitions as an input to a context determining algorithm. A disclosed example includes Bloom filter theory that utilizes a key based upon an indication of the cells involved in the transition and a selected number of hash functions. The bit strings resulting from operation of the hash functions are compared to information stored in a database that relates hash function results to context information. In a disclosed example, the entire process for determining the context information is carried out on the mobile station itself.

REFERENCES:
patent: 6385454 (2002-05-01), Bahl et al.
patent: 2004/0103291 (2004-05-01), Craft
patent: 2004/0104841 (2004-06-01), Syrjarinne

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