Energy Efficient Routing for Multi Hop Ad Hoc Networks with Multiple Access and Adaptive Modulation to Maximise Throughput

• Autorzy: Khan D , Ball P , Childs G
• Języki publikacji: EN

Abstrakty

EN

Wireless ad hoc networks are frequently deployed in strategic applications that require the use of battery powered nodes. A key requirement for these networks is to maximize the time span when all nodes have sufficient battery charge to participate in communication with other nodes. To meet this requirement, this paper describes a routing strategy that seeks to find the best balance between minimizing the power consumption and evenly using all nodes within the network to avoid early exhaustion of individual nodes. The proposed routing scheme is compared to reported schemes using minimum power routing and the results show that the proposed scheme gives a longer time until the first node’s battery energy is depleted with a lower network power consumption than schemes using just energy minimization. Multiple access techniques are discussed and a cost-effective scheme based on available wireless LAN channels and space division multiplexing is proposed. Each path can use one, two or three time slots according to the number of hops in the path. Adaptive modulation is used where the link power budget is sufficient to maintain the throughput per unit time regardless of the number of hops in the path. Simulation results show that the throughput can be significantly improved using adaptive modulation with a small reduction in the time until the first node’s battery energy is depleted.

Słowa kluczowe

EN

ad hoc network; LAN; Multiple Access Techniques; PSR protocol

• Wydawca: Instytut Telekomunikacji i Informatyki Uniwersytetu Technologiczno-Przyrodniczego w Bydgoszczy
• Czasopismo: Image Processing & Communications
• Rocznik: 2012
• Tom: Vol. 17, no. 1-2
• Strony: 47--59
• Opis fizyczny: Bibliogr. 17 poz., rys., tab.

Twórcy

autor

Khan D

• School of Applied Technology, Humber College, Toronto, ON Canada

autor

Ball P

• Dept of Computing and Communication Technologies, Oxford Brookes University, Oxford, UK

autor

Childs G

• Dept of Computing and Communication Technologies, Oxford Brookes University, Oxford, UK

Bibliografia

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