Method for Estimating Location of Nodes in Wireless Networks
AssigneeMitsubishi Electric Research Laboratories, Inc.
InventorsZafer Sahinoglu, Ghulam M. Bhatti, Jinyun Zhang
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Abstract
A method localizes a set of nodes in a wireless network that includes a target node having unknown location and a set of anchor nodes having known locations. The set of anchor nodes is partitioned into subsets of anchor nodes, wherein each subset has at least three anchor nodes. A distance from the target node to each of anchor nodes in each subset is measured, to estimate possible locations of the target node. A geometric constraint is applied to each estimated location to determine valid locations, which are then filtered to determine filtered locations. The filtered locations are averaged to determine an initial estimate of the location.
Claims8
A method for localizing a set of nodes in a wireless network including a target node having unknown location and a set of anchor nodes having known locations, comprising a processor in the target node for performing step of the method, the steps comprising:
- partitioning the set of anchor nodes into subsets of anchor nodes, wherein each subset has at least three anchor nodes;
- measuring, from the target node, a distance to each of anchor nodes in each subset;
- estimating, for each subset, an estimated location of the target node based on the distances to the anchor nodes in the subset;
- applying a geometric constraint to each estimated location to determine valid locations;
- applying a filer to the valid locations to determine filtered locations;
- and
- averaging the filtered locations to determine an initial estimate of the location.
Dependencies are inferred from the claim text.