An Energy-Aware Geographic Routing Protocol for Mobile Ad Hoc Networks |
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Gang Wang,Guodong Wang. An Energy-Aware Geographic Routing Protocol for Mobile Ad Hoc Networks. International Journal of Software and Informatics, 2010,4(2):183~196 |
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Fund:This work is sponsored by the National Natural Science Foundation of China under GrantNo.60972007; the National Science Foundation for Distinguished Young Scholars of China underGrant No.60625102; the Foundation for Innovative Research Groups of the National Natural ScienceFoundation of China under Grant No.60921001. |
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Abstract:Mobile ad hoc networks (MANET) are characterized by multi-hop wireless links
and resource constrained nodes. To improve network lifetime, energy balance is an important
concern in such networks. Geographic routing has been widely regarded as efficient and
scalable. However, it cannot guarantee packet delivery in some cases, such as faulty location
services. Moreover, greedy forwarding always takes the shortest local path so that it has a
tendency of depleting the energy of nodes on the shortest path. The matter gets even worse
when the nodes on the boundaries of routing holes suffer from excessive energy consumption,
since geographic routing tends to deliver data packets along the boundaries by perimeter
routing. In this paper, we present an Energy-Aware Geographic Routing (EGR) protocol for
MANET that combines local position information and residual energy levels to make routing
decisions. In addition, we use the prediction of the range of a destination's movement to
improve the delivery ratio. The simulation shows that EGR exhibits a noticeably longer
network lifetime and a higher delivery rate than some non-energy-aware geographic routing
algorithms, such as GPSR, while not compromising too much on end-to-end delivery delay. |
keywords:constrained flooding energy-aware routing MANET |
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