Results 1 - 10 of 4,989

Exploiting Sink Mobility for Maximizing Sensor Networks Lifetime

by Z. Maria Wang, Stefano Basagni, Emanuel Melachrinoudis, Chiara Petrioli - Proceedings of the 38th Annual Hawaii International Conference on System Sciences , 2005
"... Abstract—This paper explores the idea of exploiting the mobil-ity of data collection points (sinks) for the purpose of increasing the lifetime of a wireless sensor network with energy-constrained nodes. We give a novel linear programming formulation for the joint problems of determining the movement ..."
Abstract - Cited by 110 (2 self) - Add to MetaCart
Abstract—This paper explores the idea of exploiting the mobil-ity of data collection points (sinks) for the purpose of increasing the lifetime of a wireless sensor network with energy-constrained nodes. We give a novel linear programming formulation for the joint problems of determining

TIME-VARYING OPPORTUNISTIC PROTOCOL FOR MAXIMIZING SENSOR NETWORKS LIFETIME

by Kobi Cohen, Senior Member
"... We consider transmission scheduling by medium access control (MAC) protocols for energy limited wireless sensor networks (WSN) in order to maximize the network lifetime. Time-varying Opportunistic Protocol (TOP) for maximizing the network lifetime is proposed. By executing TOP each sensor exploits l ..."
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We consider transmission scheduling by medium access control (MAC) protocols for energy limited wireless sensor networks (WSN) in order to maximize the network lifetime. Time-varying Opportunistic Protocol (TOP) for maximizing the network lifetime is proposed. By executing TOP each sensor exploits

A Novel Energy-Efficient Heuristic for Target Coverage to Maximize Sensor Network Lifetime

by unknown authors
"... To achieve power-efficient monitoring of targets in a terrain covered by a sensor network, it is sensible to divide the sensors into cover sets and make each of these sets responsible for covering the targets for a certain period of time. Generating the maximum number of such cover sets has been pro ..."
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proved to be an NP-complete problem, and thus algorithms producing suboptimal solutions have been proposed. This paper proposes an efficient method to extend the sensor network operational time by organizing the sensors into a maximal number of non-disjoint sensor covers that are activated successively

Energy Conserving Routing in Wireless Ad-hoc Networks

by Jae-hwan Chang, Leandros Tassiulas , 2000
"... An ad-hoc network of wireless static nodes is considered as it arises in a rapidly deployed, sensor based, monitoring system. Information is generated in certain nodes and needs to reach a set of designated gateway nodes. Each node may adjust its power within a certain range that determines the set ..."
Abstract - Cited by 622 (2 self) - Add to MetaCart
An ad-hoc network of wireless static nodes is considered as it arises in a rapidly deployed, sensor based, monitoring system. Information is generated in certain nodes and needs to reach a set of designated gateway nodes. Each node may adjust its power within a certain range that determines

HEED: A Hybrid, Energy-Efficient, Distributed Clustering Approach for Ad Hoc Sensor Networks

by Ossama Younis, Sonia Fahmy - IEEE TRANS. MOBILE COMPUTING , 2004
"... Topology control in a sensor network balances load on sensor nodes and increases network scalability and lifetime. Clustering sensor nodes is an effective topology control approach. In this paper, we propose a novel distributed clustering approach for long-lived ad hoc sensor networks. Our proposed ..."
Abstract - Cited by 590 (1 self) - Add to MetaCart
Topology control in a sensor network balances load on sensor nodes and increases network scalability and lifetime. Clustering sensor nodes is an effective topology control approach. In this paper, we propose a novel distributed clustering approach for long-lived ad hoc sensor networks. Our

Energy-efficient communication protocol for wireless microsensor networks

by Wendi Rabiner Heinzelman, Anantha Chandrakasan, Hari Balakrishnan , 2000
"... Wireless distributed microsensor systems will enable the reliable monitoring of a variety of environments for both civil and military applications. In this paper, we look at communication protocols, which can have significant impact on the overall energy dissipation of these networks. Based on our f ..."
Abstract - Cited by 2103 (10 self) - Add to MetaCart
findings that the conventional protocols of direct transmission, minimum-transmission-energy, multihop routing, and static clustering may not be optimal for sensor networks, we propose LEACH (Low-Energy Adaptive Clustering Hierarchy), a clustering-based protocol that utilizes randomized rotation of local

ASCENT: Adaptive self-configuring sensor networks topologies

by Alberto Cerpa, Deborah Estrin , 2004
"... Advances in microsensor and radio technology will enable small but smart sensors to be deployed for a wide range of environmental monitoring applications. The low per-node cost will allow these wireless networks of sensors and actuators to be densely distributed. The nodes in these dense networks w ..."
Abstract - Cited by 449 (15 self) - Add to MetaCart
Advances in microsensor and radio technology will enable small but smart sensors to be deployed for a wide range of environmental monitoring applications. The low per-node cost will allow these wireless networks of sensors and actuators to be densely distributed. The nodes in these dense networks

Maximum Lifetime Routing In Wireless Sensor Networks

by Jae-hwan Chang, Leandros Tassiulas - IEEE/ACM TRANSACTIONS ON NETWORKING , 2000
"... Routing in power-controlled wireless sensor networks is formulated as an optimization problem with the goal of maximizing the system lifetime. Considering that the information is delivered in the form of packets, we identified the problem as an integer programming problem. It is known that the syste ..."
Abstract - Cited by 282 (0 self) - Add to MetaCart
Routing in power-controlled wireless sensor networks is formulated as an optimization problem with the goal of maximizing the system lifetime. Considering that the information is delivered in the form of packets, we identified the problem as an integer programming problem. It is known

Energy Aware Routing for Low Energy Ad Hoc Sensor Networks

by Rahul C. Shah, Jan M. Rabaey , 2002
"... The recent interest in sensor networks has led to a number of routing schemes that use the limited resources available at sensor nodes more efficiently. These schemes typically try to find the minimum energy path to optimize energy usage at a node. In this paper we take the view that always using lo ..."
Abstract - Cited by 428 (5 self) - Add to MetaCart
The recent interest in sensor networks has led to a number of routing schemes that use the limited resources available at sensor nodes more efficiently. These schemes typically try to find the minimum energy path to optimize energy usage at a node. In this paper we take the view that always using

Maximizing the Functional Lifetime of Sensor Networks

by Arvind Giridhar - In ACM Syposium on Information Processing in Sensor Networks (IPSN , 2005
"... Abstract — The functional lifetime of a sensor network is defined as the maximum number of times a certain data collection function or task can be carried out without any node running out of energy. The specific task considered in this paper is that of communicating a specified quantity of informati ..."
Abstract - Cited by 50 (0 self) - Add to MetaCart
Abstract — The functional lifetime of a sensor network is defined as the maximum number of times a certain data collection function or task can be carried out without any node running out of energy. The specific task considered in this paper is that of communicating a specified quantity
Results 1 - 10 of 4,989