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Sensors 2017, 17(4), 899; doi:10.3390/s17040899

An Algorithm for Timely Transmission of Solicitation Messages in RPL for Energy-Efficient Node Mobility

1
Department of Computer Engineering, Graduate School of Ajou University, Suwon 16499, Korea
2
Department of Cyber Security, Ajou University, Suwon 16499, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Mohamed F. Younis
Received: 24 January 2017 / Revised: 14 April 2017 / Accepted: 15 April 2017 / Published: 19 April 2017
(This article belongs to the Section Sensor Networks)
View Full-Text   |   Download PDF [686 KB, uploaded 19 April 2017]   |  

Abstract

The IPv6 Routing Protocol for Low Power and Lossy Networks (RPL) was proposed for various applications of IPv6 low power wireless networks. While RPL supports various routing metrics and is designed to be suitable for wireless sensor network environments, it does not consider the mobility of nodes. Therefore, there is a need for a method that is energy efficient and that provides stable and reliable data transmission by considering the mobility of nodes in RPL networks. This paper proposes an algorithm to support node mobility in RPL in an energy-efficient manner and describes its operating principle based on different scenarios. The proposed algorithm supports the mobility of nodes by dynamically adjusting the transmission interval of the messages that request the route based on the speed and direction of the motion of mobile nodes, as well as the costs between neighboring nodes. The performance of the proposed algorithm and previous algorithms for supporting node mobility were examined experimentally. From the experiment, it was observed that the proposed algorithm requires fewer messages per unit time for selecting a new parent node following the movement of a mobile node. Since fewer messages are used to select a parent node, the energy consumption is also less than that of previous algorithms. View Full-Text
Keywords: low power and lossy networks; RPL; mobility; energy efficiency; solicitation transmission low power and lossy networks; RPL; mobility; energy efficiency; solicitation transmission
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Park, J.; Kim, K.-H.; Kim, K. An Algorithm for Timely Transmission of Solicitation Messages in RPL for Energy-Efficient Node Mobility. Sensors 2017, 17, 899.

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