A Green Geographic Routing of WSN with Low-cost in the Presence of Localization Errors
Wenlin Wang · Journal of Yunnan Normal University · 2013
Existing energy-efficient geographic routing algorithms of wireless sensor network have two problems in practical deployment.Firstly,the cost for getting the geographic location information of nodes incurs too expensive to implement,such as GPS.Then,they ignore the exsit of location errors and the evaluation of the influence to the routing performance and energy-saving.In order to solve these two problems,an green geographic routing with low-cost is proposed.Distributed network coordinate algorithm is employed to obtain relative location information between nodes to save costs.Moreover,evaluating the localization performance of network coordinate and classical location algorithm of WSN(such as MDS or MDS-MAP) are compared.Data-gathering ring scheme is presented to narrowed down the neighbor candidate nodes set to reduce the energy cosumption and an adaptive transmission strategy is employed to enlarge the transmissino range to cope with the transmission failure.Extensive simulation results show that the localization errors of network coordinate are obviously less than MDS or MDS-MAP.Comparing with LED,our proposal exhibits significant routing performance improvement and decrease of energy consumption.