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Sensors 2015, 15(3), 5112-5135;

Opportunistic Mobility Support for Resource Constrained Sensor Devices in Smart Cities

Luleå University of Technology, Skellefteå, SE-93187, Sweden
Author to whom correspondence should be addressed.
Academic Editor: Antonio Puliafito
Received: 23 December 2014 / Revised: 11 February 2015 / Accepted: 13 February 2015 / Published: 2 March 2015
(This article belongs to the Special Issue Sensors and Smart Cities)
Full-Text   |   PDF [2087 KB, uploaded 2 March 2015]   |  


A multitude of wireless sensor devices and technologies are being developed and deployed in cities all over the world. Sensor applications in city environments may include highly mobile installations that span large areas which necessitates sensor mobility support. This paper presents and validates two mechanisms for supporting sensor mobility between different administrative domains. Firstly, EAP-Swift, an Extensible Authentication Protocol (EAP)-based sensor authentication protocol is proposed that enables light-weight sensor authentication and key generation. Secondly, a mechanism for handoffs between wireless sensor gateways is proposed. We validate both mechanisms in a real-life study that was conducted in a smart city environment with several fixed sensors and moving gateways. We conduct similar experiments in an industry-based anechoic Long Term Evolution (LTE) chamber with an ideal radio environment. Further, we validate our results collected from the smart city environment against the results produced under ideal conditions to establish best and real-life case scenarios. Our results clearly validate that our proposed mechanisms can facilitate efficient sensor authentication and handoffs while sensors are roaming in a smart city environment. View Full-Text
Keywords: smart cities; WSN; sensors; EAP-Swift smart cities; WSN; sensors; EAP-Swift

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Granlund, D.; Holmlund, P.; Åhlund, C. Opportunistic Mobility Support for Resource Constrained Sensor Devices in Smart Cities. Sensors 2015, 15, 5112-5135.

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