Method and system for network synchronization

Details Method and system for network synchronization Method and system for network synchronization

2011-06-14

2011-06-14

Ngo, Ricky (Department: 2464)

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

C375S140000

Reexamination Certificate

active

07961760

ABSTRACT:
A method and a system for network synchronization are provided. In this method, when a node attempts to join a network, a parent node is searched from all other nodes already joined the network per specific time interval. If the parent node can be found, sync-information sent by the parent node is received by the node so as to synchronize with the parent node and enter a working mode. When a sleeping instruction sent by the parent node is received, or a timer determines that a network ending time is reached according to the sync-information, the node switches to a sleeping mode. However, when the timer determines that a network wakeup time is reached according to the sync-information, the node attempts to join the network again. All nodes in the network can work and sleep simultaneously so as to extend the lifetime of the battery.

REFERENCES:
patent: 2006/0104241 (2006-05-01), Kim
patent: 2006/0187866 (2006-08-01), Werb et al.
patent: 2007/0177574 (2007-08-01), Park et al.
patent: 2008/0291855 (2008-11-01), Bata et al.

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