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Method and apparatus for battery life extension for nodes within beaconing networks

Invented by: Edgar H. Callaway
Boca Raton, FL

Monique J. Bourgeois
Sunrise, FL

Originally Assigned to: Motorola, Inc.
Schaumburg, IL
[Now assigned to . . .]

Issued:2008-07-15
Filed:2004-12-20
Application No:11017274
Examined by:Chan; Wing F.

An "identical beacons" field (401) is inserted near the beginning of a transmitted beacon (403) that contains either an integer equal to the number of consecutive identical beacons sent (i.e., identical to the one presently being transmitted) or a repetition bit indicating whether or not the beacon contains changed information when compared to a prior-sent beacon. After sleeping awhile, a node (302-304) wakes up, receives a first portion of the beacon containing the identical beacons field, and analyzes the identical beacons field. Based on the analysis, the node makes a decision on whether to remain "awake" for reception of the remaining beacon or to return to sleep.

[pdf] U.S. Pat. No. 7,400,595

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