Lifetime Prolonging Algorithms for Wireless Sensor Networks

In the wireless sensor networks, prolonging network lifetime is an important aim. Unbalanced energy consumption influences greatly the network lifetime. Therefore, it introduces hybrid transmission mechanism for cell-based wireless sensor network. The sensor node forwards data either by one-hop direct transmission or by multiple small hops. This mechanism focuses on a novel transmission probabilities finding algorithm. The algorithm can obtained the hybrid transmission probabilities of each slice to even out the energy consumption efficiently. Furthermore, lateral length optimizing method is developed for each cell. Simulations show the mechanism can prolong the network lifetime more efficiently comparing with other schemes.