| PHS, called as local wireless telephone formally, It uses a high quality of digit technology to connect PHS with the city telephone net in a wireless way, and makes the traditional city telephone to be used at the handy phone in the scope covered by the net by means of an innovative conception. Compared with a mobile phone system, the PHS system has the advantages of a high utilization for the frequency source, a high quality of sound, and a lower radiation etc.Shenyang PHS system was built in May 2003.In early times the system ran smoothly. With the rapid growth of users, the system's performance turns worse and worse, and gets more complaints from the users. To solve this problem, adding more CS or RP is a usual method accepted before, which obviously can't adapt to the requirements of PHS system now. A full-scale optimization is needed to improve the system.The optimization of the PHS wireless network is a long and tough work. Considering the need of the work, this paper selects to optimize the network of Shenyang. Firstly, this paper finds out the main problem of the current network by analyzing the capability of Shenyang PHS system, Secondly, this paper provides the optimization project to solve the problem, which has already been used in the optimization of practical network. Thirdly, this paper compares the network performance between the pre-optimization system and the after-optimization system. The analysis and evaluation results show that the performance of the wireless network has been improved a lot by the optimization.In conclusion, through the research work, we've mastered the basic idea and practical technique of the PHS wireless network optimization and made good preparation for the further optimization of the PHS wireless network. |