Optimized energy-delay sub-network routing protocol development and implementation forwireless sensor networks

Abstract

The development and the implementation issues of a reactive optimized energy-delaysub-network routing (OEDSR) protocol for wireless sensor networks (WSN) are introducedand its performance is contrasted with the popular ad hoc on-demand distancevector (AODV) routing protocol. Analytical results illustrate the performance ofthe proposed OEDSR protocol, while experimental results utilizing a hardwaretestbed under various scenarios demonstrate improvements in energy efficiencyof the OEDSR protocol. A hardware platform constructed at the University ofMissouri-Rolla (UMR), now the Missouri University of Science and Technology (MST),based on the Generation 4 Smart Sensor Node (G4-SSN) prototyping platformis also described. Performance improvements are shown in terms of end-to-end(E2E) delay, throughput, route-set-up time and drop rates and energy usageis given for three topologies, including a mobile topology. Additionally, resultsfrom the hardware testbed provide valuable lessons for network deployments.Under testing OEDSR provides a factor of ten improvement in the energy used inthe routing session and extends network lifetime compared to AODV. Depletionexperiments show that the time until the first node failure is extended by a factorof three with the network depleting and network lifetime is extended by 6.7%.