Network system, radio communication device, radio...

Details Network system, radio communication device, radio... Network system, radio communication device, radio...

2005-11-30

2009-02-03

Appiah, Charles N (Department: 2617)

Multiplex communications

Communication over free space

Repeater

C370S338000, C370S401000, C455S404200, C455S456200

Reexamination Certificate

active

07486633

ABSTRACT:
A network system, radio communication device, radio communication method, and computer program for same are provided. The present invention enables formation of a network topology with sensor nodes each having a traveling function and operating in the self-directive and dispersive state without using positional information. Each sensor nodes periodically transmits a HELLO message to neighboring nodes to exchange information therewith. In an area where the node density is high, the nodes are set in the Expand state and in the Bridge state. A node in the Expand state shifts to the Stay state when the node can be connected to only one neighboring node to becomes a component of the topology. A node in the Bridge state shifts to the Stay state together with neighboring nodes each having hidden terminals not less than a prespecified number to become a component of the topology.

REFERENCES:
patent: 7349360 (2008-03-01), Gutierrez et al.
patent: 2004/0190476 (2004-09-01), Bansal et al.
patent: 2000-315974 (2000-11-01), None
patent: 2003-4497 (2003-01-01), None
patent: 2004-032062 (2004-01-01), None
patent: 2004-165964 (2004-06-01), None
patent: 2004-260526 (2004-09-01), None
“The Coverage Problem in a Wireless Sensor Network”, C. -F. Huang and Y. -C. Tseng (In Second Workshop on Sensor Networks and Applications (WSNA), Sep. 2003), pp. 115-121.
“Unreliable Sensor Grids: Coverage, Connectivity and Diameter”, Shakkottari S, R. Srikant, and N. Shroff (In Proceesings of the IEEE Infocom, Mar. 2003).
“Integrated Coverage and Connectivity Configuration in Wireless Sensor Networks”, X. Wang, G. Xing, Z. Zhang, C. Lu, R. Pless, and C. Gill (In Proceedings of the ACM Symposium on Networked Embedded Systems (SenSys, 03), Nov. 2003)), pp. 28-39.
“Radar: An In-Building RF-Based User Location and Tracking System”, P. Bahl and V. Padmanabhan (In Proceedings of the IEEE Infocom, Mar. 2000)).

Affiliated with

Also associated with

Rating

Network system, radio communication device, radio... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Network system, radio communication device, radio..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Network system, radio communication device, radio... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4114277