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Sensors 2014, 14(7), 11993-12022; doi:10.3390/s140711993
Article

On the Network Convergence Process in RPL over IEEE 802.15.4 Multihop Networks: Improvement and Trade-Offs

1,2,*  and 1
1 Universitat Politècnica de Catalunya/Fundació i2Cat, C/Esteve Terradas, 7, 08860 Castelldefels, Spain 2 Department of Computer Engineering, Toyserkan Branch, Islamic Azad University, Toyserakn, Hamedan Province, 65816-85184, Iran
* Author to whom correspondence should be addressed.
Received: 12 April 2014 / Revised: 20 June 2014 / Accepted: 25 June 2014 / Published: 7 July 2014
(This article belongs to the Special Issue Wireless Sensor Networks and the Internet of Things)

Abstract

The IPv6 Routing Protocol for Low-power and Lossy Networks (RPL) has been recently developed by the Internet Engineering Task Force (IETF). Given its crucial role in enabling the Internet of Things, a significant amount of research effort has already been devoted to RPL. However, the RPL network convergence process has not yet been investigated in detail. In this paper we study the influence of the main RPL parameters and mechanisms on the network convergence process of this protocol in IEEE 802.15.4 multihop networks. We also propose and evaluate a mechanism that leverages an option available in RPL for accelerating the network convergence process. We carry out extensive simulations for a wide range of conditions, considering different network scenarios in terms of size and density. Results show that network convergence performance depends dramatically on the use and adequate configuration of key RPL parameters and mechanisms. The findings and contributions of this work provide a RPL configuration guideline for network convergence performance tuning, as well as a characterization of the related performance trade-offs.
Keywords: RPL; IPv6; IEEE 802.15.4; network convergence; Trickle; RPL parameters RPL; IPv6; IEEE 802.15.4; network convergence; Trickle; RPL parameters
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.

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Kermajani, H.; Gomez, C. On the Network Convergence Process in RPL over IEEE 802.15.4 Multihop Networks: Improvement and Trade-Offs. Sensors 2014, 14, 11993-12022.

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