| This article describes the Chaohu area of geography, topography, culture and customs, combined with the 2008,2009, broadband subscribers, CDMA20001X wireless network card,user, business development, as well as provincial company issued a number of tasks the situation is expected to EVDO users. EVDO air interface described in detail the seven key technologies and the former, the reverse link budget. Chaohu, China Telecom, the main branch of the EVDO wireless network planning, according to the former, the reverse link budget combined with the geographical area from the lake conditions and the economic situation, on lake areas were divided into four types of link models are Chaohu city, Four county and suburban counties, rural plains, mountainous areas. COST-HAT A model is given using a variety of rates and under different link model is the base station coverage radius.. According to China Telecom and Anhui companies EVDO network planning guidance, in full knowledge of the EVDO network, wireless link budget, EVDO wireless network air interface technology features, EVDO network capacity of the budget before the reverse, PN and other planning features Characteristics of the case. Chaohu local network EVDO network planning. Specific planning a 312 base stations and base station PN code, the base station azimuth, elevation angle of the base station carried out a detailed plan, and planning of urban harmony nest wu were DT test high-speed verification, validation of the downlink rate in 1M above, up more than in the 0.6M. The results from the validation to see better planning purposes. |