Sunday, March 14, 2010

Wireless Sensor Network


Wireless Sensor Network (WSN), which is made by the convergence of sensor, nested computation, networks and wireless communication technologies, is a novel technology about acquiring and processing information. It can be defined as an autonomous, ad hoc system consisting of a collective of networked sensor nodes designed to intercommunicate via wireless radio. Wireless Sensor Networks had been applied in a lot of scenarios and situations. Both academia and industries have shown great interestin Wireless Sensor Network.Wireless senor network differ from traditional wireless network in several ways: severe energy constraints, redundant low-rate data, many-to-one flows.The main capability of Wireless sensor networks is energy efficient. On the basis of the analysis of energy management of WSN, sensing data, data processing and radio communication are the main consumers of sensor's energy. The radio communication is the major consumer of energy. Although energy efficiency can be improved at various layers of the communication protocol stack, however, due to fundamental physical limitations, progress towards further energy efficiencv is expected to routing protocol.In this paper, the issues of the transmission efficiency routing protocols of wireless sensor network based trajectory are discussed. Based analysis of the routing protocols of wireless sensor network, this paper designs two independent routing protocols through considering transmission efficiency and network lifetime such as a based on Line Trajectory Transport Efficiency routing protocol and Transport Efficiency based on B-spline curve Trajectory routing algorithm.