The Analysis And Optimization Of WCDMA Wireless Network System

With the rapid development of mobile communication technology, the continuous expansion of network size, the continuous influx of new various businesses, and the rapid increase in the number of users, therefore network optimization is to be a heavy and indispensable work. Efficient network optimization and high quality of operation maintenance is the key to assurance and to improve the quality of mobile communication network. Studying the methods of network optimization, and using optimization tools to optimize the network, it will have effectively implemented on sharing resources between the 3G and 2G. Improving the system resource utilization and improving the network performance of the system is great significance for achieving high-quality 3G services.The thesis first described the development of domestic and international communication technologies and technical standards for 3G network and features, and then introduced the key WCDMA technologies, including RF, IF, baseband, wireless access network resource management technology, and enhanced technology of WCDMA receiver. Then combined with network optimization objectives, content, requirements, key technical indicators, it analyzed the WCDMA network optimization principles and methods, finally it elaborated on the RF, business service, switching between systems, and indoor coverage system optimization processes and technical methods.Conducting research on the basis of the above, for instance of PS data optimization services, the thesis introduced the user side structure of the PS business and protocols, described the detailed PS business data transmission and analytical methods used, mainly focused on analyzing of the basic issues and problems caused by data transmission performance. Finally, the thesis made specific proposal for optimization programs, and give a detailed solution and full procedure to a typical problem occurring in new site such as low download rate of HSDPA.The proposal for optimization programs has the ability of improving network quality, protecting of the multi-service access, eliminating the common IF interference and other common problems. This proposal has great guiding significance to future WCDMA networks for fast, low-cost construction.