| Our country is vast in territory, and in order to meet the coverage requirements, we need construct a large-scale communication network, which need operator’s enormous investment. With the continuous development of mobile communication network construction and technology in China, China’s mobile communication network has entered the coexistent status of2G,3G and4G network. At present, the2G and3G network construction of China’s three major communication operators have achieved a considerable scale. China Mobile has started commercial TD-LTE network in more than20cities, and China Telecom and China Unicom have also started the construction of TD-LTE network. With the enlarging of mobile network scale, network optimization has become the key work to ensure and enhance the network quality.Based on daily optimization of GSM and WCDMA network as well as engineering optimization of TD-LTE network, this paper studies and analyzes the problems encountered in practice combined with theoretical knowledge and network optimization method of GSM, WCDMA and TD-LTE system. Firstly, on the basis of analyzing the problems found through traffic statistics, testing and complaint in daily optimization, optimize the network by using concrete methods. Then, make adjustments according to the reasons found by analyzing the problems of testing in engineering optimization. In order to lay a good foundation for the development of communication services, we improve the network quality and performance by using a variety of optimizing methods. |