期刊名称：International Journal of Computer Science and Information Technologies
电子版ISSN：0975-9646
出版年度：2014
卷号：5
期号：4
页码：5773-5775
出版社：TechScience Publications
摘要：Wireless Sensor Networks are used in many applications. It consists of sensor nodes. Sensor nodes are powered by renewable batteries. Since it is not possible to replenish sensor node battery, it is important to conserve node energy. Plenty of work in this field is done in homogeneous WSNs, research in heterogeneous WSN still remain unexplored. The proposed approach uses ACO methodology to maximize lifetime of heterogeneous WSN. Proposed algorithm uses two types of pheromones to find shortest distance from source to destination. Based on pheromone and heuristic information, the ants seek an optimal path on the network. Further if the data packet to be sent is very small then the non participating nodes are put to low power state rather than to sleep state. This helps to reduce the power consumed during transition from active state to sleep state and vice versa. The results show that the approach is effective and efficient in finding high quality solutions for maximizing the lifetime of heterogeneous WSNs
