Abstract:

Unfixed location events and queries in wireless sensor networks is an important research topic.To achieve efficiency and maximizing the network life cycle, we propose an event query algorithm based on Hash function and energy balancing.In the algorithm,a sensor node only needs to care about the neighbor nodes within its communication range while not knowing the status of the entire network.The algorithm features less redundant data,less query energy consumption, a longer network life cycle, and ease of implementation.The simulation experiments in OMNET++ network simulator show that,compared with the classic routing algorithm, the proposed algorithm can query events quickly and effectively,while minimizing and balancing the energy consumption and prolonging the network life cycle.     

Key words: wireless sensor networks;hash function;energy balancing;event query;OMNET++