Research On The Technology And Its Application In Depth Coverage Of The Mobile Communication Network

With the efforts of network construction for many years, the width coverage of network has almost been completed. But depth coverage, which is more important to mobile operators for it affects end-users, needs resources far beyond mobile operators can afford. The solution for depth coverage is pressing.The problems of depth coverage are different from city to city. The mainly scenes with depth coverage problem include:urban-village, large residence without macro sites, high rise residence. The problems in urban-village scene are highlight in recent years. Though the latter two are common, it is quite difficult to find solutions for them. Combining theory with practice, many efforts are needed to analyze different scenes separately.In this paper, solutions for normal depth coverage scenes are collected and more research has focused on depth courage problem of urban-villages scenes. A number of techniques are used for the analysis of urban-villages depth courage problem which include:fixed-pointed test and walking test, analysis of wireless communication environment, link budget, comparison of forecast data and measured data. The solution based on these techniques is adjusted according to various problems in practical engineering. Eventually, a three-dimension and multi-layer network model is designed to simplify problem solving. Urban-villages depth coverage is simplified into high rise macro base station and low-floor outdoor distribution system. Theoretical derivation is used to analyze coverage needs separately. Furthermore, in order to simplify the engineering design, mathematical and statistical models are introduced to obtain computing urban-villages typical buildings and outdoor derive empirical scale distributed systems.Finally, the positioning of depth coverage of city A is by the ways of analysis of user complains, courage forecast, combining with practical engineering experience of city A. Different solutions of three typical depth coverage problems is introduced and evaluated, which will provide a reference for other cities with similar problems.