A Queueing Approach to Optimal Resource Replication in Wireless Sensor Networks

Document Type

Article

Publication Date

10-2008

Publication Source

Performance Evaluation

Abstract

We develop a queueing model for analyzing resource replication strategies in wireless sensor networks. The model can be used to minimize either the total transmission rate of the network (an energy-centric approach) or to ensure the proportion of query failures does not exceed a predetermined threshold (a failure-centric approach). The model explicitly considers the limited availability of network resources, as well as the frequency of resource requests and query deadlines, to determine the optimal replication strategy for a network resource. While insufficient resource replication increases query failures and transmission rates, replication levels beyond the optimum result in only marginal decreases in the proportion of query failures at a cost of higher total energy expenditure and network traffic.

Inclusive pages

689-700

ISBN/ISSN

0166-5316

Comments

Permission documentation on file.

Publisher

Elsevier

Volume

65

Peer Reviewed

yes

Issue

10

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