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Calculating Distances Between Wireless Nodes for Wireless Network Localization

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This paper presents a patent targeted to obtain distance measurements between nodes belonging to a wireless network. The main motivation for this patent is the measurement of the distance between a user device and an access point (or base station). After several distance measurements to different access points at sight and assuming the position of the access points known, the device can compute its own position by trilateration. The main advantage in front of previously existing methods to obtain distance measurements is that the method presented here involves only software modifications to legacy terminals, thus allowing avoiding the need for hardware modifications at the user terminal.
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Keywords: IEEE 802.11; RTT; Ranging; WLAN; location system; multilateration; positioning; round trip time

Document Type: Research Article

Publication date: December 1, 2012

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  • Recent Patents on Telecommunications publishes review and research articles, and guest edited thematic issues by experts on recent patents in telecommunications. The journal also covers recent research (where patents have been registered) in fast emerging areas of the field such as networks, wireless communications, communication technology, computing and processing, and the Internet. A selection of important and recent patents on telecommunications is also included in the journal. The journal is essential reading for all researchers involved in telecommunication science and technology.
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