Research Of Wireless Sensor Networks With Skelenton-based Network Topology

The Wireless Sensor Networks (WSN) is the product of the combination of MEMS, communication, sensor and network technologies. It is foreseen and being proved that WSN would be widely used in all areas. However, being widely used in various areas also complicates the design of WSN, consequently increases the prices of WSN application products. This seems to be running away from the initiation of WSN, which is to make it cheap and convenient. Different applications of WSN require different network topologies and node working modes. We need to design network protocols for different applications to take use of the network topology, so as to achieve better network performance and lower product prices.In this paper, we keep above points in mind, and focused on only one scenario: the application of WSN for monitoring a river or a road, which needs no full coverage of a plane, but a set of lines. We model this kind of networks as Wireless Sensor Networks with Skelenton-based Network Topology, and research the node placement algorithm, MAC algorithm, routing algorithm and network initialization methods.We introduce the new Discrete Power Model for Sensor Nodes to find the most optimal node placement method to reduce network energy consumption and increase network lifetime. Our simulation results show that the network using our node model reduces energy consumption of network by 7% compared with normal sensor node model, and increases network lifetime by 16%.Based on the current S-MAC protocol, we take use of the Skelenton-based network topology and propose Pipelined S-MAC algorithm. The algorithm inherits the good energy-saving performance of S-MAC. At the same time, it reduces the transfer delay of S-MAC.We also provide a network initialization method for Skelenton-based network topology. It completes in O(N) time slots, and also generates routing tables for each sensor node. So the corresponding routing algorithm is also presented in this paper.With this tailored design, we provide a complete solution for Wireless Sensor Networks with Skeleton Network Topology.