| In wireless sensor network, the routing protocol is the important component of network layer and also is the core technology. But the routing choose is determined by shorRREQ path in traditional wireless sensor network routing protocols, such as AODV, DSR and TORA protocols. They do not have ability to adjust more QoS parameters. Moreover they cannot make the corresponding adjustment along with the user’s needs. Against these problems, this article proposed the dynamic routing configuration algorithm under the QoS safeguard. An intermediate layer has been designed between the application layer and the wireless sensor network layer, this intermediate layer has provided a connection for the user, which enables the route agreement have the dynamic disposition characteristic.The dynamic routing configuration algorithm has been designed detailedly. The system architecture consists of application layer, intermediate layer and sensing layer. In which the intermediate layer is the essential part to realize the dynamic route disposition process. It can choose a path to meet the user’s needs from the numerous paths through fuzzy matching. But in the match process, the network parameter is changed along with the time variation. The different ways’ parameters will appear interlocks which cause the change of route frequent.Therefore, one kind of appraisal algorithm is needed to reduce the appearance of stagger. So a new appraisal algorithm has been proposed in the foundation of existing appraisal algorithm. By comparison and analysis, the performance was improved greatly and the effect of evaluate is improved too. The simulation experiment to the system has been carried on using the NS2network simulation software. When the parameters of user’s and the appraisal algorithm in intermediate layer have been changed, the experimental results were so different. The results proved that the dynamic route disposition process can be realized well through the system which is designed in this thesis. |
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