Researches On Data Fusion Supporting QoS For Wireless Sensor Networks

With the increasing development of wireless communication, embedded calculation and sensor technology, wireless sensor gathering data acquisition,transaction and communication as its whole functions is widely used in the areas of industry,agriculture,military affairs,scientific researches, wireless sensor network has already become one of the hot research spots of information area. The data fusion summation of wireless sensor network is based on rules to establish some kinds of aggregation tree in sensor network, while data transmitted from leaf node to root node, middle node take fusion treatment on data in the way of"more input less output", just transfer some useful data after the treatment.With the widely used of wireless sensor network, besides the traditional conservation of energy regarded as the modern researching issue ,the quality of service ( QoS)of wireless sensor network also caused the people's attention increasingly. In the concrete use of wireless sensor network, some factors are infecting the sensor network application such as time delay,broadband restriction etc.First, this article has give the introduction of the concept,characteristic,energy consumption,Broadband restriction and the theories of wireless sensor network related to routing .Secondly, the question which and its faces to the wireless sensor network data fusion algorithm research results has carried on the discussion. A kind of analog simulation of wireless sensor network based on OMNET++ is brought forward, aimed at event-drive characteristic, using widely used of internet ipv6 anycast technology, applied to wireless sensor network, bringing forward a data fusion arithmetic based on the event-drive anycast routing, time delay and the balance of energy consumption based on the event perceptive anycast are resolved。Aiming at the problem of data fusion with time delay restriction, this article provided data fusion algorithm of balance tree. Wireless sensor network has a good capability in the QoS constrained condition. Simulation experiment indicates that the data fusion arithmetic of balance tree has a good performance in the area of time delay ensure, prolong the lifecycle of the network, comparing with the traditional algorithm.