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There are different Metrics for Quality of Service (QoS) in Wireless Sensor Networks (WSN) and most of them are application-dependent. One of the most important of them is the number of active nodes. Regarding the sensors redundancy, we can improve the network lifetime by activating enough number of nodes and making the others sleep. Also, proposing a method that uses the nodes energy equally can...
This paper proposes a novel algorithm to improve the lifetime of wireless sensor network. This algorithm employs compressive sensing in conjunction with Particle Swarm Optimization algorithm to decrease the communication rate and to build up the data aggregation trees respectively. We build up the data aggregation tree in a way that it can be utilized to maximize the efficiency by rectifying the delay...
Recently, mobility-assisted data collection has been proposed to prolong network lifetime. However, the upper bound of throughput capacity in such mobility-assisted data collection models has not been studied. In this work, we first derive the upper bound of throughput capacity when a mobile sink is available for data collection. Given the traveling speed of the mobile sink and the required delay...
In wireless ad hoc sensor networks (WASNs), a crucial issue is to reduce power consumption while satisfying some key network properties. In this paper, we propose a fault-tolerant topology control that optimizes the lifetime of the network at a given degree k of connectivity by minimizing power consumption. Our topology control is fully distributed and uses a model-based transmission power adaptation...
Data gathering is a common but critical operation in many applications of wireless sensor networks. The innovative techniques that improve energy efficiency to prolong the network lifetime are highly required. As a novel information acquiring and processing technology, multimedia sensor networks, in contrast to the traditional sensor networks, pay more attention to the multimedia data (e.g., audio,...
A major issue in wireless sensor networks is to prolong network lifetime by efficient energy management. In this paper we present an initial study of maximum lifetime routing in sparse sensor networks. We have studied simulations of how different heuristic routing algorithms influence the energy consumption of individual sensor nodes, and thus the functional lifetime of a sparse sensor network. The...
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