A queueing approach to optimal resource replication in wireless sensor networks

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. Key words: resource replication, search algorithms, wireless sensor networks

• Type: Journal
• Year: 2008
• Where: PE
• Authors: Christopher R. Mann, Rusty O. Baldwin, Jeffrey P. Kharoufeh, Barry E. Mullins
• Keywords: Optimization, PE 2008, Query Failures, Resource, Wireless Sensor Networks