Method and apparatus for synchronizing a node within an...

Details Method and apparatus for synchronizing a node within an... Method and apparatus for synchronizing a node within an...

2007-09-18

2007-09-18

Nguyen, Lee (Department: 2618)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S350000, C455S041200

Reexamination Certificate

active

11249638

ABSTRACT:
A method and apparatus for synchronizing a node (200) within an ad-hoc communication system (100) is described herein. During operation all nodes periodically broadcast a synchronization beacon for other nodes to utilize for synchronization when a coordinating access point (node) is unavailable. A particular node's synchronization beacon will have an associated “tier” number that is incremented from the tier number of the beacon used to synchronize the particular node. In the absence of an access point, a node that joins the ad-hoc communication system will listen for synchronization beacons transmitted by other nodes. If synchronization beacons are heard, the node will synchronize with a beacon having a lowest tier. The node will then broadcast its own beacon having its tier number incremented from the lowest tier beacon heard.

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Proceedings of the 38th Hawaii International Conference on System Sciences—2005-08 Distributed Sleep-Scheduling Protocols for Energy Conservation in Wireless Networks.

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