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MERLIN : cross-layer integration of MAC and routing for low duty-cycle sensor networks
Date Issued
2008-11
Date Available
2009-07-13T15:43:32Z
Abstract
Sensor network MAC protocols typically sacrifice packet latency to achieve energy efficiency. Such delays may well increase due to routing protocol operation. For this reason it is imperative that we attempt to quantify the end-to-end delay and energy consumption when jointly using low duty cycle MAC and routing protocols. In this paper, we present a comprehensive evaluation of MERLIN (MAC and efficient routing integrated with support for localization), a
cross-layer protocol that integrates both MAC and routing features. In contrast to many sensor network protocols, it employs a multicast upstream and multicast downstream approach to relaying packets to and from the gateway. Simultaneous reception and transmission errors are notified by asynchronous burst ACK and negative burst ACK
messages. A division of the network into timezones, together with an appropriate scheduling policy, enables the routing of packets to the closest gateway. An evaluation of MERLIN has been conducted through simulation, against both the SMAC and the ESR routing protocols (an improved version of the DSR algorithm). The results illustrate that the joint usage of both SMAC and ESR, in low duty cycle scenarios, causes extremely high end-to-end delays and prevents acceptable data delivery rate. MERLIN, as an integrated approach, notably reduces latency, resulting in nodes that can deliver data in a very low duty cycle, yielding a significant extension to network lifetime.
Sponsorship
Science Foundation Ireland
Type of Material
Journal Article
Publisher
Elsevier
Journal
Ad Hoc Networks
Volume
6
Issue
8
Start Page
1238
End Page
1257
Copyright (Published Version)
2007 Elsevier B.V.
Subject – LCSH
Wireless sensor networks
Computer network protocols
Wireless sensor networks--Energy consumption
Web versions
Language
English
Status of Item
Peer reviewed
ISSN
1570-8705
This item is made available under a Creative Commons License
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