Senses Lab

SEnsors NetworkS and Embedded Systems Laboratory

Center for Cyber Intelligence and Information Security

A detailed analytical and simulation study of geographic random forwarding

Research Area: Design, implementation and evaluation of protocol stacks for sensor networks Year: 2013
Type of Publication: Article
Authors: P. Casari; M. Nati; Chiara Petrioli; M. Zorzi
Journal: Wireless Communications and Mobile Computing Volume: 13
Number: 10 Pages: 916-934
Month: July
Abstract:
In this paper, we extend previous work on geographic random forwarding (GeRaF) by considering a more efficient paradigm whereby on/off cycles are exploited and every node can participate to packet relaying, as long as it wakes up during any handshake procedure. The protocol is fully distributed, as routing decisions are made hop by hop based on geographic metrics and using a joint channel access/routing procedure, like in the first version of GeRaF. In addition, a previously defined analytical model for GeRaF is used to analyze the protocol, after extending it to cover the new channel access and relay selection procedure. The model is employed to find optimal choices for the parameters of the protocol, before comparing analytical results with ns2 simulations. Results confirm that the geographic paradigm remains a very good solution for energy-constrained, density-constrained, and latency-constrained networks, and that small yet very effective protocol optimizations can achieve remarkable performance improvements
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