Protocols and Architectures for Wireless Sensor Networks

Karl, Holger; Willig, Andreas

doi:10.1002/0470095121

Cited by 1,175 publications

(975 citation statements)

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“…Multihop networks offer different advantages when monitoring data has to be transmitted over long distances. Mainly, the network robustness to sensor node failure and the high power efficiency [1] make multihop networks attractive for monitoring applications. Figure 2 illustrates a schematic multihop network deployed on a road bridge.…”

Section: Wireless Sensor Networkmentioning

confidence: 99%

Wireless Sensor Network Platforms

Bischoff¹,

Meyer²,

Feltrin³

2008

Encyclopedia of Structural Health Monitoring

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A wireless sensor network is a network made up of many tiny intercommunicating computers equipped with one or several sensors. Each tiny computer represents a node of the network. The nodes are self‐contained units typically consisting of a power supply with limited capacity, a radio transceiver, a microcontroller, and one or more sensors. This article gives an introduction to wireless sensor networks for structural health monitoring, shows the general architecture of sensor nodes, and overviews current hardware and software platforms. Furthermore, it shows the characteristics and limits of such monitoring systems and gives advice to choose a suitable platform to an application. Because nodes are powered by an autonomous source, energy‐related aspects, energy storage, and scavenging are presented as well.

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Section: Wireless Sensor Networkmentioning

confidence: 99%

Wireless Sensor Network Platforms

Bischoff¹,

Meyer²,

Feltrin³

2008

Encyclopedia of Structural Health Monitoring

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“…For energy efficiency duty cycle of sensor nodes should be low. Duty cycle [7] of a node is the ratio of time spends in active mode to total frame time. Clustering prefers TDMA scheduling for node to cluster head communication.…”

Section: Introductionmentioning

confidence: 99%

“…After a certain time, known as round time [7], re-clustering is performed. Round time is the total duration of cluster set-up and continuous data processing phase.…”

Section: Introductionmentioning

confidence: 99%

Analyzing the Effect of Variable Round Time for Clustering Approach in Wireless Sensor Networks

Pal¹,

Singh²,

Yadav³

2013

LNSE

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Abstract-As wireless sensor networks are energy constraint networks so energy efficiency of sensor nodes is the main design issue. Clustering of nodes is an energy efficient approach. It prolongs the lifetime of wireless sensor networks by avoiding long distance communication. Clustering algorithms operate in rounds. Performance of clustering algorithm depends upon the round time. A large round time consumes more energy of cluster heads while a small round time causes frequent re-clustering. So existing clustering algorithms apply a trade off to round time and calculate it from the initial parameters of networks. But it is not appropriate to use initial parameters based round time value throughout the network lifetime because wireless sensor networks are dynamic in nature (nodes can be added to the network or some nodes go out of energy). In this paper a variable round time approach is proposed that calculates round time depending upon the number of active nodes remaining in the field. The proposed approach makes the clustering algorithm adaptive to network dynamics. For simulation the approach is implemented with LEACH in NS-2 and the results show that there is 6% increase in network lifetime, 7% increase in 50% node death time and 5% improvement over the data units gathered at the base station.

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“…This paper addresses the problem of optimizing the evaluation of declarative queries over sensor networks (SNs) [1]. Throughout, by sensor networks we mean ad-hoc, wireless networks whose nodes are energy-constrained sensors endowed with general-purpose computing capability.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Optimization of Declarative Sensor Network Queries

Galpin

Brenninkmeijer

Jabeen

et al. 2009

Lecture Notes in Computer Science

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Abstract. We present a sensor network query processing architecture that covers all the query optimization phases that are required to map a declarative query to executable code. The architecture is founded on the view that a sensor network truly is a distributed computing infrastructure, albeit a very constrained one. As such, we address the problem of how to develop a comprehensive optimizer for an expressive declarative continuous query language over acquisitional streams as one of finding extensions to classical distributed query processing techniques that contend with the peculiarities of sensor networks as an environment for distributed computing.

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Protocols and Architectures for Wireless Sensor Networks

Cited by 1,175 publications

References 0 publications

Wireless Sensor Network Platforms

Wireless Sensor Network Platforms

Analyzing the Effect of Variable Round Time for Clustering Approach in Wireless Sensor Networks

Comprehensive Optimization of Declarative Sensor Network Queries

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