Research On Network Topology Optimization Model Based On Quality Of Service

The traditional "best effort" mechanism can not meet user's needs already, therefore, the network architecture based on the quality of service emerged at a historic moment.Thus, in order to obtain the higher quality of the network, this paper proposes a network topology optimization model named QoS-OSM, which is based on the QoS.For higher accuracy and calculated performance ,QoS-OSM model ,taken the existing network topology model as a basis model,combines two key technologies of quality of service measurment and routing algorithm to optimize the existing model.The paper first generates a initial network topology according to users' requirment,then takes use of QoS method by improving the related values of the quality of service to adjust the network structure,and utilizes modified routing algorithm to make sure that the network topology model can achieve the goal of best quality but minimize cost.The paper describes the entire optimization process in detail,and gives the critical technology and related algorithm of the QoS-OSM model.In addition, the following the research and design of storage structure ensures the optimization process safer and more reliability.Based on QoS-OSM model,the paper accomplishes the design and implementation of network topology optimization ,as well as topology optimization prototype system whose main functions contains network topology generation,QoS metric optimization ,routing algorithm optimization and so on.At the same time,paper also gives out the key data structure and module design , crucial technology of the optimizition model.Experimental results show that the prototype system based on QoS-OSM has a higher practicality and accuracy and gets a greater quality of service to satisfy the users' requirements.