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Open AccessArticle

A Reliable Handoff Mechanism for Mobile Industrial Wireless Sensor Networks

1
School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China
2
Department of Information Systems and Technology (IST), Mid Sweden University, Sundsvall 85170, Sweden
*
Author to whom correspondence should be addressed.
Sensors 2017, 17(8), 1797; https://doi.org/10.3390/s17081797
Received: 27 June 2017 / Revised: 25 July 2017 / Accepted: 28 July 2017 / Published: 4 August 2017
(This article belongs to the Special Issue Smart Industrial Wireless Sensor Networks)
With the prevalence of low-power wireless devices in industrial applications, concerns about timeliness and reliability are bound to continue despite the best efforts of researchers to design Industrial Wireless Sensor Networks (IWSNs) to improve the performance of monitoring and control systems. As mobile devices have a major role to play in industrial production, IWSNs should support mobility. However, research on mobile IWSNs and practical tests have been limited due to the complicated resource scheduling and rescheduling compared with traditional wireless sensor networks. This paper proposes an effective mechanism to guarantee the performance of handoff, including a mobility-aware scheme, temporary connection and quick registration. The main contribution of this paper is that the proposed mechanism is implemented not only in our testbed but in a real industrial environment. The results indicate that our mechanism not only improves the accuracy of handoff triggering, but also solves the problem of ping-pong effect during handoff. Compared with the WirelessHART standard and the RSSI-based approach, our mechanism facilitates real-time communication while being more reliable, which can help end-to-end packet delivery remain an average of 98.5% in the scenario of mobile IWSNs. View Full-Text
Keywords: Industrial Wireless Sensor Networks (IWSNs); handoff triggering; reliable communication; mobility aware Industrial Wireless Sensor Networks (IWSNs); handoff triggering; reliable communication; mobility aware
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Ma, J.; Yang, D.; Zhang, H.; Gidlund, M. A Reliable Handoff Mechanism for Mobile Industrial Wireless Sensor Networks. Sensors 2017, 17, 1797.

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