Localization for low cost sensor network

Details Localization for low cost sensor network Localization for low cost sensor network

2007-10-30

2007-10-30

Anderson, Matthew (Department: 2618)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S338000, C370S339000, C370S401000, C455S456100, C455S456200, C455S456300

Reexamination Certificate

active

11163099

ABSTRACT:
Wireless devices, systems and approaches or methods having the capability of determining the location of a given wireless device. An example system includes a wireless device that generates at least one pulse as a part of an output signal, and the at least one pulse is captured by anchor devices and used, in a time of arrival approach, to determine the location of the example device. The at least one pulse may be generated during a designated portion of an otherwise normally modulated message. Another example system includes an anchor node that generates a directional output signal, the direction output signal including data indicating its direction, and the directions of output signals from plural anchor nodes when pointed at a wireless device are used to determine the location of the wireless device. Combinations of the pulse and directional antenna systems, devices used within each of these systems, and approaches associated with these systems are also included.

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