A Study On Network Optimization Of Hybrid Networking Between GSM And TD-SCDMA

In recent years, as the rapid development of mobile communication technology, new technologies have been more and more widely used. But with the increasing scale of the network, the network has become the coexistence of multiple technologies. The complexity of the network has led to more and more problems. How to integrate these technologies into mobile-networks and how to play their respective roles optimization, has become the key issues to mobile-network operators. In this thesis, the network optimization scheme under multi-network condition is studied based on the GSM-900/GSM-1800/TD-SCDMA co-existence project of China Mobile,JiangSu LianYunGang Branch Inc.First, the thesis analyzes performance and feasibility in the TD-SCDMA and GSM hybrid network, from the wireless network part of the core network, TD-SCDMA and GSM dual-mode terminal interoperability and design of a hybrid TD-SCDMA and GSM networking programs. Second, the thesis discusses the TD-SCDMA and GSM hybrid-network mode optimization, network optimization for GSM side to hand-over relationship and the dual-band network optimization in urban area. The parameter optimizations of TD-SCDMA network, on the one hand, pay more attention to the connection rate, handover success rate, frequence-pilot pollution and frequency-parameter optimization. On the other hand, it discusses the common 2G/3G network planning issues, including RNC planning, LAC planning, RAC planning, URA Planning, SAC planning. Further more, the thesis analyzes Lianyungang network status and problems to study the TD-SCDMA and GSM hybrid network model of the scene optimization. The optimization focuses on the outdoor scenes of high-speed railways, viaducts, and other outer surface, analysis of these scenarios leading to issues, provides the corresponding mobile-network design, studies the indoor scene combining analysis of typical cases. To the indoor scenes, this thesis analyzes of specific issues and provides the corresponding solutions for indoor distribution system and no indoor distribution system.