Research On The Cover Of Mobile Base Station

In recent years, with the growth of mobile users progression, the contradiction of frequency resources and the number of users, become more and more outstanding. The main problems are the interference of equivalent frequencies or neighbor frequencies among bases, while in the masses of rural area, as for still fewer users, principal contradiction is that the network coverage of the base is so small that it is unable to meet the users'demands. In choosing the base location, the predicting basis is still the traditional Okumura model. And because Okumura model is mounded according to the area of Japan, it does not suit the prediction of network coverage in our area .One base costs up to a million .So the problems that should be soloed urgently at present are that: how to predict the network coverage in our area, scientificly and effectively, how to make the layout of them and how to adjust the existing base so that they could reach the best results.In the article, we mainly probe into various kinds of factors influencing the network coverage and adjust various kinds of wireless network parameter ,in odder to reach the best cover results .The revising data that suit the network coverage in the area of QQHAR city could be drawn through actual measurement comparing with theory predict .And this result could offer reference for network planning for the future .Through this thesis, it can be proved that the network coverage of the bases could be adjusted effectively by adjusting the wireless network parameters to achieve the purpose that the network optimizes Besides, because our area is mainly the plain, it can play a consulting role to the scientific prediction of network coverage model in our area, the Northeast and even the areas that are similar to our regional geographical environment in the whole country.Mobile users'most direct impression is the coverage of wireless signals. Errors exist between the theory calculation and practical measurement of network coverage. And different wireless parameters adjustment can lead to the influences to network .In this thesis; these kinds of influences have been measured concretely, summed up and summarized. Meanwhile, measurements are carried in network coverage of typical bases. And practical measurement value has compared with theory value .Through this thesis ,I have deeply understand the wireless network coverage no matter theoretically or from practice .And all the knowledge and experience offer kind theory guarantee to the network optimization work that I am engaged in.