Method and apparatus for determining the location of a node...

Multiplex communications – Diagnostic testing – Determination of communication parameters

Reexamination Certificate

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C342S453000, C342S458000

Reexamination Certificate

active

07548517

ABSTRACT:
A location technique is utilized where channel-model parameters are originally estimated prior to location taking place. Location then takes place using a first set of known-located nodes, and the channel-model parameters are updated based on the distances resulting from the location estimate. Once the channel-model parameters have been updated, location again takes place using a second set of known-located nodes, node distances are calculated based on the produced locations and the channel-model parameters are again updated. This process continues until no significant change is observed between the previous and the newly estimated location, or until a maximum number of iterations is reached.

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Lee W. Young, “PCT International Search Report and Written Opinion,” WIPO, ISA/US, Aug. 22, 2007.

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