Research On TD-LTE Network Coverage Optimization For Specific Scenario

With the advent of the era of large data,in order to meet new business development requests and competitive environment,the demandsforrate of mobile communication are increasingly high.The Chinese government strongly supports TD development,and at present 4G network has been applied nationwide.Since 4G outdoor frequency band is relatively high,and signal penetration is week,the demand for indoor signal is extremely urgent.However,there exist series of problems in the construction of traditional indoor distribution system like unclear demand,construction coordination difficulties,high investment,low efficiency,long period,more rectification and other issues.This thesis aimsto research and analyze the new ideas and new methods of network depth coverage,thus solve the above problems.With the enhancement of TD-LTE network users' perception as starting point,and TD-LTE network depth coverage rate for Specific Coverage Scenarios as acting point,this thesis is to research and design new types of coverage methodson the basis of research and analysis of fundamental theories of TD-LTE technology and network optimization technology.1)Comparing various optimization schemes,with the principle of fine demand,multiple coordination,sub-scenarios and fine transformation,by adoptingmulti-network coordination,indoor and outdoor synergy effect,macro-micro combination and optimization of the construction mode of outdoor radiatesindoors,new schemes,new products and new technologies are proposed for scenarios with good closure,large penetration loss,high user demand and high capacity requirements based on the network optimization adjustment.2)Mainly considering people's resistance to the construction of mobile base stations,poor electromagnetic environment and the status of moreobvious poor coverage phenomenon,the integrated micro-station construction scheme which contains BBU/RRU high-performance embellished antenna is adopted.3)By analyzing the characteristics of specific scenarios and technical parameters,coverage ways of small cell,micro cell,Pico/Femtocell,optical fiber distribution system and mobile phone companion are put forward.Furthermore,by comparing the characteristics of the above methods and summarizing the advantages and disadvantages,the ideal Matching Scheme for specific scenario optimization is realized.After on-site debugging and comprehensive testing,the scheme proposed in this thesis is proved to solve the problems of blind area supplement and insufficient depth of coverage,effectively improve the connection rate,reduce the call drop rate,improve users' perception and realize expected effects.The project results have been approved by Liaoning Mobile and started trial in Liaoning,Fujian and other provinces.