The Optimization Of The Gsm Network

For mobile operators, the operators with the completion of the restructuring, competition between operators will become more intense. At the same time as the 3G network launch, the original GSM mobile communications network will be gradually reduced investment, the future of the GSM network optimization will become the mobile communications network operators to maintain the focus on steady improvement in quality.The purpose of network optimization is to find the major factors that affect the quality of network, and ultimately achieve better network performance. It can improve network quality, bringing a higher degree of customers'satisfaction and enhancing an operator's competence. The major problems that can be resolved through network optimization include low-level signal coverage, overreach coverage, traffic unbalance between uplink and downlink, island effect, radio interference, and other network problems caused by the above reasons, such as call loss, call failure and handover failure. In addition, the optimization can cut down regional traffic congestion or idleness caused by unbalanced traffic loads.First of all,the article introduces GSM network architecture. This article goes deeply into the key technology which is closely bound up with GSM Network Optimization:Cellular Technology and Frequency Reuse TDMA,Diversity Reception, Frequency-Hopping Spread Spectrum and Power Control. Then the importance, the main contents and common methods of NO are discussed. After that the practical problems occurred during the optimization of the GSM network of China Unicom AnKang Branch are studied. We analyzed the causes of some problems, such as bad network coverage, user call dropping, and network congestions and so on, and provide resolutions to them. In this thesis, the analysis for the problerm principle is included also. The work flow and policy and measure for the troubleshooting for network problem is presented also such as Coverage, handover, parameter configuration, Equipment hardware, interference, antenna, transmission, radicalization site and network upgrade. As a test, these resolutions have been applied in the real NO of China Unicom AnKang Branch. It improved GSM network quality and brought a higher degree of customers'satisfaction of China Unicom AnKang Branch.