Performance, Computing, and Communications Conference, 2002. 21st IEEE International (2006)
Phoenix, AZ, USA
Apr. 10, 2006 to Apr. 12, 2006
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/.2006.1629432
S. Zou , Dept. of Comput. Sci., Alberta Univ., Edmonton, Alta., Canada
We consider the problem of extending the lifetime of wireless sensor networks (WSNs) where sensors report their data to a base station via multi-hop transmission. In-network data aggregation is introduced to reduce the traffic. The lifetime is optimized using a LP (linear programming) framework built on a multicommodity network flow model to which we introduce the concept of flow loss multiplier to express the impact of data aggregation over correlated data. To balance energy consumption across the network, data aggregation is performed only at the first hop (FH) transmission. Heuristics are proposed to obtain significant FH aggregation, accordingly prolonging system lifetime. Simulation results show that FH aggregation possesses characteristics that make it suitable under certain data collection applications/scenarios.
energy consumption, first hop data aggregation, wireless sensor network, WSN, multihop transmission, network traffic, linear programming
J. Harms, I. Nikolaidis and S. Zou, "Extending sensor network lifetime via first hop data aggregation," Performance, Computing, and Communications Conference, 2002. 21st IEEE International(PCC), Phoenix, AZ, USA, 2006, pp. 54.