Design And Implementation Of Performance Testing Tool For RNC In WCDMA

The rapid development of mobile communication makes the increasingly high performance requirements for communication equipments. As the most important method for testing the performance of communication equipments, performance testing is playing a more and more important role. However, some cases of performance testing can not be achieved only by using artificial means, we need to write software to simulate some behaviors of performance testing in order to make a full test of the equipments.Aiming at the functions of objects simulated by the testing tool, this paper analysed the basic functions and software architecture of radio network controller (RNC) system. According to the requirements of performance testing, this paper studied the signaling flow related to performace testing in detail. So performace testing can trigger the corresponding signaling flow in radio network controller system.Because the testing tool just only simulated the functions of user equipment and NodeB, instead of implementing them completely, so the tool not only has to predigest and combine the architecture of Uu interface and Iub interface, in order to form the unique interface for the tool, but also has to predigest the related protocols according to functions of testing tool.As performance testing needs a large number of users to initiate calls, we raise synchronous traffic model and BHCA traffic model. Because we must have continuing voice datas during a long-time test for maintaining a call, so we raise a method to simulate the AMR voice datas.Considering the maintainability and expansibility of the tool, the designer used the modular method at the very beginning of the design. So, the tool was divided into six modules functionally, including user interface module, testcase generator module, user equipment resources module, Iub interface contol plane module, ATM function module and IP protocol stack module. By using this method, designers have established the solid foundation for the farther development of the tool.By using the performace testing tool to test the stability and performace of radio network controller system in a real testing environment, designers can verify the correctness of the tool. At the mean time, by analyzing the results of the test, designers can estimate the performace and capability of radio network controller system.