Synchronising WiFi access points with GPS time obtained from smartphones to aid localisation

Lami, Ihsan and Maghdid, Halgurd (2013) Synchronising WiFi access points with GPS time obtained from smartphones to aid localisation. In: International Conference on Computer Applications Technology (ICCAT), 20 - 22 January 2013, Sousse, Tunisia.

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Abstract

WiFi Access Points (WAPs) are readily available everywhere for access to the Internet. Unless specifically designed for localisation applications and their position accurately calibrated, WAPs do not offer accurate position calculation and do not know their geographic position. However, Smartphones, with the aid of onboard GPS and WiFi will know their location to within few meters when outdoors. This paper proposes to utilise Smartphones, while outdoors, to sync the clock-time and define the location of any WAP within reach. This is achieved by using Trilateration techniques where the Smartphones become reference stations at several instances in time as they approach available WAPs. Also, any WAP position is continuously updated as other Smartphones approach them. Such WAPs can later be used as reference stations to aid indoors localisation. Simulation scenarios based on MATLAB implementation has proved the viability of this scheme.

Item Type: Conference or Workshop Item (Paper)
Additional Information: © 2013 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Uncontrolled Keywords: WiFi Access Point Localisation; Clock Synchronisation; GPS time synchronisation
Subjects: Q Science > Q Science (General)
Q Science > QA Mathematics > QA75 Electronic computers. Computer science
T Technology > T Technology (General)
Divisions: School of Science > Applied Computing
Depositing User: Ihsan Lami
Date Deposited: 24 Aug 2015 13:55
Last Modified: 01 Sep 2016 14:03
URI: http://bear.buckingham.ac.uk/id/eprint/63

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