.3 G Wireless Network Planning

The number of the subscribers has been increasing rapidly, and the research of new wireless services has been made in recent years. How to use the limited frequency resource effectively and to improve system capacity has been the pivotal matter of the third generation wireless communication. Wireless network planning is an important procedure in 3G rollout3G is the abbreviation of the 3rd Generation , which refers to the third generation mobile communication technology. Compared with the first generation of analog handset and the second generation of digital handset for GSM,TDMA, the third generation handset generally refers to the new generation of mobile communication system that combines wireless communication and multimedia technology. WCDMA inherits the GSM's characteristic of high standardization level and good open, and makes great progress in standardization. The network operation enterprise can introduce GPRS network equipments and new services to GSM network, cultivate data service customers, and gradually transit to 3G.This paper describes the parts in WCDMA wireless network planning flow. Generally introduce the background of wireless communication and the main characteristics in the first .Primarily analyze and discuss the parts in WCDMA wireless network planning flow: First, propagation models are analyzed, they are Hata, CCIR, COST231-Hata, COST231-WIM and Planet .Scope of application of the models in network planning of WCDMA system is discussed. Second, the critical problem of capacity and coverage is discussed in the process of third generation mobile network planning, and how to balance the above two is also explained. At last ,with a simulation tool, an example is shown to analyze the simulation results.