Recent Patents on Telecommunication

Joel Rodrigues
Institute of Telecommunications, University of Beira Interior


Calculating Distances Between Wireless Nodes for Wireless Network Localization

Author(s): Israel Martin-Escalona, Francisco Barcelo-Arroyo, Marc Ciurana-Adell.


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.

Keywords: Ranging, positioning, round trip time, RTT, IEEE 802.11, WLAN, location system, multilateration.

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Article Details

Year: 2012
Page: [130 - 140]
Pages: 11
DOI: 10.2174/2211740711201020005
Price: $100