Multiplex communications – Communication over free space – Signaling for performing battery saving
Reexamination Certificate
2005-10-19
2009-02-03
Patel, Ajit (Department: 2617)
Multiplex communications
Communication over free space
Signaling for performing battery saving
C455S574000
Reexamination Certificate
active
07486631
ABSTRACT:
In a 802.15.4 network, each reduced functionality device (RFD) is permitted to communicate with only an assigned full function device (FFD). The present invention allows each of the RFDs to communicate with another RFD upon the RFD determining that the local FFD assigned to the RFD is inoperable or unable to communicate. Under emergency conditions, the RFD is able to communicate with a closely located RFDs such that the closely located RFDs can receive and respond to an emergency situation and/or repeat the message. To satisfy the 802.15.4 standards, communication between the RFDs is allowed only during emergency conditions and when the FFD is inoperative. A comprehensive test procedure is included to insure the integrity of the system is preserved at all times.
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Ehlers Gregory A.
Mulligan Geoff
Howard & Howard Attorneys P.C.
Patel Ajit
Ranco Incorporated of Delaware
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