State validation using bi-directional wireless link

Details State validation using bi-directional wireless link State validation using bi-directional wireless link

2006-03-06

2008-11-04

Zimmerman, Brian (Department: 2612)

Communications: electrical

Selective

Interrogation response

C340S010400, C340S003100, C340S003400

Reexamination Certificate

active

07446647

ABSTRACT:
Building monitoring and control systems including bi-directional radio frequency links between master and remote units wherein the remote units operate in a low power, non-receiving state a majority of the time is disclosed. The bi-directional capability allows coordinated scheduling which aids in allowing the remote units to transmit data only at periodic time intervals to extend battery life. The bi-directional capabilities also allow for re-read requests for alarm validation and for putting remote units in armed and disarmed states for power conservation.

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