Ad hoc cluster idle node coordination

Details Ad hoc cluster idle node coordination Ad hoc cluster idle node coordination

2004-12-28

2008-09-23

Appiah, Charles N (Department: 2617)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S311000, C370S315000, C370S252000

Reexamination Certificate

active

07428229

ABSTRACT:
Nodes (103a-d,105, 107, 109a-c,111a-c) in an ad hoc communication network are coordinated. The network includes the node (111b) and one or more neighbor nodes (103a-d,105, 107, 109a-c,111a,c). The node (111b) can sleep in a low duty cycle. Further, the node (111b) can awaken, responsive to a schedule; and register with a cluster head (101); listen for one or more neighbors, wherein the at least one neighbor can be active (103a-d,105, 107) or idle (109a-c,111a,c); and/or listen for one or more requests from the cluster head (101) or active neighbor(s) (103a-d,105, 107). Responsive to the request(s), the idle node (111b) can become active on a communication link.

REFERENCES:
patent: 7209740 (2007-04-01), Bahl et al.
patent: 2005/0122231 (2005-06-01), Varaiya et al.
Tijs Van Dam, et al., “An Adaptive Energy-Efficient MAC Protocol for Wireless Sensor Networks”, Faculty of Information Technology and Systems Delft University Technology.

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