Method of refining node position information in wireless...

Details Method of refining node position information in wireless... Method of refining node position information in wireless...

2007-01-09

2010-11-16

Chang, Kent (Department: 2617)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S328000, C455S440000, C455S456100, C709S223000

Reexamination Certificate

active

07835333

ABSTRACT:
Provided is a method for refining node position information in a wireless sensor network having an ultra wideband communication network and a wireless personal area network where the initial positions of respective nodes are set, by utilizing nodes at a 2-hop distance, or more than a 2-hop distance when the number of neighboring nodes at a 1-hop distance is not sufficient to perform triangulation, and to refine the position of nodes based on a distance measured between the respective nodes. Because the initial position is refined and confirmed in a wireless sensor network, a user node operates as a pseudo anchor node for the nodes which have no anchor node nearby. Furthermore, as a node has the refined position, it can act as a pseudo anchor node and be used to compute the position of the other nodes. Additionally, positions of nodes of the wireless sensor network can be estimated with more accuracy.

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