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Mobile Networks and Applications
Erschienen in: Mobile Networks and Applications 5/2011

01.10.2011

Taking Advantage of Overhearing in Low Power Listening WSNs: A Performance Analysis of the LWT-MAC Protocol

verfasst von: Cristina Cano, Boris Bellalta, Anna Sfairopoulou, Miquel Oliver, Jaume Barceló

Erschienen in: Mobile Networks and Applications | Ausgabe 5/2011

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Abstract

LWT-MAC is a new Low Power Listening MAC protocol for WSNs designed to rapidly react to instantaneous increases of the network load. It takes advantage of overhearing by waking up all nodes at the end of a transmission to send or receive packets without needing to transmit the long preamble before. In this work, detailed analytical models of the LWT-MAC and B-MAC protocols, for both saturated and unsaturated conditions, are presented. Moreover, the key LWT-MAC parameters are optimized in order to minimize the energy consumption, constrained to obtain the same throughput as the IEEE 802.11 (CSMA/CA) MAC protocol. From the behavior of the optimal LWT-MAC parameters, a heuristic configuration is proposed. Finally, the LWT-MAC is compared to B-MAC, in both single and multi-hop scenarios, showing improvements in energy consumption, throughput and delay.
Vorheriger Artikel Effects of Nodes Geometry and Power Allocation in Space-Time Coded Cooperative Wireless Systems
Nächster Artikel Joint Power Allocation and Interference Mitigation Techniques for Cooperative Spread Spectrum Systems with Multiple Relays

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Fußnoten
1
The effect of the CA timer previously described has not been studied, it is considered that collisions move the system to the unscheduled mode.
 
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Metadaten
Titel
Taking Advantage of Overhearing in Low Power Listening WSNs: A Performance Analysis of the LWT-MAC Protocol
verfasst von
Cristina Cano
Boris Bellalta
Anna Sfairopoulou
Miquel Oliver
Jaume Barceló
Publikationsdatum
01.10.2011
Verlag
Springer US
Erschienen in
Mobile Networks and Applications / Ausgabe 5/2011
Print ISSN: 1383-469X
Elektronische ISSN: 1572-8153
DOI
https://doi.org/10.1007/s11036-010-0280-4

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