Research Of ZigBee Tree Routing Optimize Based On Energy-Balance

ZigBee, a low-cost, low-power consumption, short-distance wireless communication technology, is designed for the low-rate wireless sensor network and control network, so this technology can be used in the application fields of wireless communication such as the industry control, house automatization and medical treatment and so on. Because the ZigBee device is supplied energy by batteries and the energy of the batteries is limited, the lifetime of the ZigBee network is based on the batteries seriously. Therefore, it is important to use the energy of the batteries efficiently in the ZigBee network, and the research of the routing algorithm based on energy efficient for ZigBee network is very significant.In this thesis, first, I introduced the features and some conceptions of the ZigBee network. Then, I gave a detiled introduction to ZigBee tree routing algorithm and AODVjr algorithm, proved some formulations and analyzed the shortcomings of the existing research work.Aiming at the problem of ZigBee tree routing algorithm in which the solution may not be optimal and some nodes may exhaust the energy as a result of heavy transmissions, an optimized ZigBee tree routing algorithm based on the energy-balance. The optimized algorithm imports neighbor-table and the depth of nodes to make sure the routing local optimal in routing hops. This paper also considers the residual energy of nodes to avoid selecting nodes with low residual energy in routing selection. The simulation result indicates that this improved algorithm can reduce the energy consumption efficiently, maximize the lifetime of the whole network.At the same time,we simulated the impoved routing algorithms by OMNET++ simulator and analyzed these simulation results detailed.The simulation results indicate that the energy consumption was reduced efficiently,the problem of unbalance load was resolved and the lifetime of the whole network was maximized in the improved algorithm.