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R e s e a r c h o n L E A C H P r o t o c o l b a s e d i m p r o v e d A n t C o l o n y A l g o r i t h m
Y A N b i n h e n g , L I U J u n , L I U G u a n g b i n , H e Y a n g j i o n g
( D e p a r t m e n t o f I n f o r m a t i o n E n g i n e e r i n g , Engineering College of PAP, Xian 710086,China)
Abstract: In order to solve the problem of excessive energy consumption for transmitting to sink node directly from cluster heads in LEACH routing protocol, a routing protocol based improved ant colony algorithm was proposed. This protocol introduced leadthe energy consumption factor to improve the ant transition probability and the pheromone updating rule. And It would take full account of the residual energy of nodes and the distance between the nodes, through the establishment and update of pheromone, make sure to find the optimal path between cluster heads and base station, and use multi-hop transmission to balance the energy consumption of cluster nodes. Simulation results show that this improved routing protocol better than LEACH protocol on the cluster-head nodes selection, and it can extend the survival time of the network, and makes the energy consumption more balanced.
Key Words: wireless sensor networks; LEACH protocol; ant colony algorithm; pheromone ; e n e r g y b a l a n c e
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