Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-03-28
2006-03-28
Vuong, Quochien B. (Department: 2682)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S456300, C455S456600, C455S041200, C380S247000, C380S255000
Reexamination Certificate
active
07020474
ABSTRACT:
A first portable wireless communication device enters a PICONET and establishes unencrypted communications with a second wireless communication device, the PICONET master. The first portable wireless communication device transmits identification information to the second wireless communication device using a conventional short-distance communications protocol. The second wireless communication device transmits, in a novel FEMTONET communications mode, an encryption key to the first portable wireless communication device. The first portable wireless communication device then securely transmits encrypted messages based on the encryption key to the second wireless communication device using the conventional short-distance communications protocol.
REFERENCES:
patent: 6397073 (2002-05-01), Hottinen
patent: 6459903 (2002-10-01), Lee
patent: 6804494 (2004-10-01), Fernandez-Corbaton et al.
patent: 2002/0114467 (2002-08-01), Vatanen
patent: 2002/0123325 (2002-09-01), Cooper
patent: 2003/0048904 (2003-03-01), Wang et al.
patent: 2003/0088772 (2003-05-01), Gehrmann et al.
Cross Match Technologies, Inc.
Dao Minh D.
Sterne Kessler Goldstein & Fox P.L.L.C.
Vuong Quochien B.
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