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Optimizing the wireless sensor network lifetime under reliability constraint | IEEE Conference Publication | IEEE Xplore

Optimizing the wireless sensor network lifetime under reliability constraint


Abstract:

Both network lifetime and reliability are of major concern in wireless sensor networks. In this paper, we propose to optimize the wireless sensor network lifetime under a...Show More

Abstract:

Both network lifetime and reliability are of major concern in wireless sensor networks. In this paper, we propose to optimize the wireless sensor network lifetime under a reliability constraint. First, we define the reliability with regards to the accuracy of observations made through sensor nodes. Then, we introduce a function that links reliability to the average amount of energy consumed by the network when reporting an event to the data collector. Based on this function, we bring out the required number of successive readings to be performed in order to optimize both network lifetime and reliability. Subsequently, we give a different definition to the reliability in order to maximize the network lifetime by relaxing the reliability constraint. In this case, the reliability is defined with regards to the number of non-reported events. We show that the network lifetime does not increase indefinitely when relaxing the reliability constraint. Finally, we conclude that new node placement strategies should be designed for wireless sensor applications that tolerate losing events (i.e. events that are not reported to the data collector), in order to maximize their network lifetime.
Date of Conference: 24-27 November 2008
Date Added to IEEE Xplore: 10 April 2009
ISBN Information:
Print ISSN: 2156-9711
Conference Location: Dubai, United Arab Emirates

References

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