LinkPeek: A Link Outage Resilient IP Packet Forwarding Mechanism for 6LoWPAN/RPL based Low-Power and Lossy Networks (LLNs)

Lohith, YS and Narasimman, Sathya T and Anand, SVR and Hedge, Malati (2015) LinkPeek: A Link Outage Resilient IP Packet Forwarding Mechanism for 6LoWPAN/RPL based Low-Power and Lossy Networks (LLNs). In: IEEE Third International Conference on Mobile Services MS, JUN 27-JUL 02, 2015, New York, NY, pp. 65-72.

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Abstract

Packets traversing through a multi-hop Low-power and Lossy Network (LLN) experience various link outage conditions in transit that can lead to packet loss at an intermediate relay node. Motivated by the problem of providing high Packet Delivery Ratio (PDR) in the LLNs running RPL(Routing Protocol for Low-power and Lossy Networks) routing protocol, we implemented a lightweight add-on functionality to the network layer's packet forwarding mechanism, LinkPeek, in which the forwarding node iteratively retransmits the packet to its alternate/next best parent belonging to the same RPL DODAG(Destination Oriented Directed Acyclic Graph) instance whenever IEEE 802.15.4 MAC layer retransmission count set by our mechanism for the current best parent is exceeded. With this simple reactive and successive retry mechanism, our experimentation has shown significant performance gain in terms of achieving high PDRs, even at higher data rates, over the LLNs under different operating environments. We implemented LinkPeek over the ContikiRPL protocol stack. We describe the implementation details and discuss various tunable parameters that affect the network performance. The Cooja simulation and real-world physical testbed experimentation with link outage environment showed PDRs > 99.40% with LinkPeek as against the PDRs of 76-90% obtained using the native network stack implementation. Through the experimental results we demonstrate the effectiveness of our approach in supporting higher data rates even in node mobility scenarios.

Item Type:	Conference Proceedings
Series.:	IEEE International Conference on Mobile Services
Additional Information:	Copy right for this article belongs to the IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	24 Aug 2016 09:50
Last Modified:	24 Aug 2016 09:50
URI:	http://eprints.iisc.ac.in/id/eprint/54552

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