The Routing Protocol Research Of WSNs Based On The Mobile Sink

Wireless Sensor Networks (Wireless Sensor Networks, WSNs) can objectively contact the physical world and the logical information world, and perceive the surrounding environment of nodes, gather and process the relevant data, so it has a wide of application prospects. The feature of limited, sensor node energy and cannot be charged makes energy consumption of wireless sensor network to be the key factor of application, so how to effectively save energy and balance energy consumption have become the focus in the wireless sensor network.Mobile Wireless Sensor Network derivatives in Wireless Sensor Network, with the introduction of mobile sink nodes, the flexibility of moving sink can be used to collect data dynamically, and balance node energy, so the performance and energy consumption of wireless sensor network is optimized. It can efficiently collect data, and balance network consumption, and prolong the network lifetime, and so on.The main work is as follows:(1) In this dissertation, after studying the infrastructure in wireless sensor network and mobile wireless sensor network related characteristics, analysis the performance of the network effected by the energy and moving sink in mobile wireless sensor network, and determined using the node energy consumption and the sink node mobile to optimize the network performance.(2) Put forward The Mobile Sink Routing Algorithm Based on the Proxy Mechanism of Energy Regional, the algorithm uses The Residual Energy Scanning Algorithm divides energy areas into energy relevant area, then build routing information in the energy relevant area, and choose the proxy node to store the information from the energy area and transmit information to the sink node according to the built routing information. Mobile Sink formulates the minimum traverse strategy according to the position of the proxy node.(3) Put forward The Energy Efficient Routing Tree Algorithm Based on Mobile Sink, the algorithm build routing tree first, then use the "root node footprint chain" to maintain local routing information, reduce sink mobile routing refactoring, when sink move too far from its original position, trigger routing tree reconstructing by global routing tree reconstruction algorithm, avoiding routing detours due to expanding footprint chain effectively, timely updates to the entire network routing tree, makes the routing is always in the best state.Using NS2 simulation software to simulation routing algorithm described in this paper, the simulation experiment shows that compared with the traditional relevant protocols, the mobile sink routing algorithm based on the proxy mechanism of energy regional can extend the network life cycle from 30% to 40%; the energy efficient routing tree algorithm based on mobile sink can extend network lifetime by 25% to 30%. Therefore, the two protocols of network can balance the energy consumption and extend the life cycle effectively.