Network Optimization For GuiYang PHS

PHS network communication system of GuiYang, it was little cellular communications technology that was adopted. Because PHS base station launch power to be little, electric wave pierce through ability to be weak, in GuiYang area among the special geographical environment that spread all over " steamed bun mountain ", interfere increasing, problem influenced and conversed seriously that the blocking rate of frequency increases etc. after presenting TCH, cause putting through rate low , cutting off rate high situation, operation index low similar city than other have. In order to clarify TCH interferes increasing , physics reason to increase of blocking rate of frequency, look for and solve the solution with low putting through rate , of high cutting off rate, optimize the network, we is it combine GuiYang telecommunication Company " excellent network " project distribute and travel the characteristic not to go on research to GuiYang electromagnetism , PHS of network " have to begin on will it be June 2003, this thesis is a part of this work, include mainly:1 Direct against the question that GuiYang PHS network exists —The blocking rate of cutting off rate, frequency is high, the low grade question of the putting through rate, gather a large number of operation data in recent GuiYang PHS network, carry on the analysis, research, has put forward the necessity that the network optimizes.2 Have analysed meaning , content, question and network best use method and means needing paying attention to optimized in network planning and relation, network while optimizing3 Analyse spread characteristic of electromagnetic wave, especially to PHS network influence that electromagnetic wave travel geographical environment of GuiYang -Will mainly decline and pass more effects soon. Several spread model in electromagnetic wave is it analyse , compare to go on, is it suit network mathematics model, communication of system , PHS of this area , to select --COST231-Hata. Using the artificial software MatLab, the network situation of according with this area carries on emulation to analyse, draw suit revision range of fetching etc. of factor , GuiYang of area.COST231-Hata model after it's time to revising has already been applied to optimize in the project in GuiYang PHS network, the result indicates this model is to analysing GuiYang PHS network electromagnetic wave propagates and distributes andhas greater directive significance, is it offer the perspective suggestion and consult to maintain for operator for the future networking.