Energy efficient distributed power management algorithm with directional antenna for wireless sensor networks

Abstract

Energy efficiency is an important consideration in a battery powered wireless sensor network (WSN). We propose an energy efficient Distributed Power Management algorithm with Directional Antenna (DDISPOW) that adaptively manages nodes' power in a dynamic wireless network to preserve network connectivity and reduce interference cooperatively. DDISPOW, with adequate transmit power, is capable of providing strongly connected reliable network. It stabilizes node connectivity over the dynamic network environment and attempts to prevent nodes from being completely disconnected from the network. It highlights the benefits of using directional antenna with lower average power, reduced interference and as much as 31% improved throughput.It will be shown that DDISPOW, while adaptively maintaining network connectivity and improving network performance, is energy efficient and significantly reduces interference when compared to common power strategy. It also alleviates the dependency of common node power strategy on few nodes that are isolated in the network by their physical location and surrounding network environment.Keywords-Distributed power management algorithm, directional antenna, topology control, energy efficiency, wireless sensor network.

Wireless Sensor Network Security Enhancement Using Directional Antennas: State of the Art and Research Challenges

“…By focusing their transmitted power in the needed direction, directional antennas have the potential to reduce the energy usage [ 12 ] and therefore to extend sensor nodes’ lifetime. Longer transmission range; reporting information inside WSNs using fewer hops [ 13 , 14 ] or reducing the risk for nodes or groups of nodes to become isolated (due to malfunctions, battery depletion or malicious attacks) [ 15 ] can significantly improve the WSN performance, when using directional antennas. Higher security; derived either from their immunity to eavesdroppers [ 16 ] or jammers [ 17 ] placed outside their narrow radiation region or from the feature of determining the exact position of a sender node using the signal’s angle of arrival [ 18 ], the directional antennas can mitigate the risk of security attacks.…”

“…Longer transmission range; reporting information inside WSNs using fewer hops [ 13 , 14 ] or reducing the risk for nodes or groups of nodes to become isolated (due to malfunctions, battery depletion or malicious attacks) [ 15 ] can significantly improve the WSN performance, when using directional antennas.…”

Evidence-based Power Management in Distributed Sensor Networks

“…Most of the work that is being carried out in power management of distributed sensor networks use data driven approaches or low level domain specific knowledge at one or more of the Physical through Transport Layers [4][5][6][7]. Some of this work in this area includes:…”

“…Ultra wideband frequency with pulse position modulation is preferred as it takes low transmission power and has simple transceiver circuitry. Pradhan and Saadavi [5] have proposed energy efficient Distributed Power Management algorithm with Directional Antenna (DDISPOW) that adaptively manages nodes' power in a dynamic wireless network to preserve network connectivity and reduce interference cooperatively. DDISPOW is a localized asynchronous algorithm that uses directional antenna to adaptively build a stable strongly connected network tailored to its surrounding node density and propagation environment.…”