TD-LTE Indoor Deep Coverage Construction And Optimization Research

Today,The use and improvement of LTE service is the user's expectation of high quality service and capacity in the operator's room.Users want faster Internet connections in the room than ever before.In the near future,indoor wireless network data services will become an important growth pole for traffic,especially in multi-story buildings and large traffic areas.LTE indoor coverage is increasingly important.Therefore,LTE indoor deep coverage optimization and construction is one of the key elements to provide quality services,meeting the needs of users for large bandwidth mobile networks.4G network is driven by VOLTE,indoor business promotion and operator competition.There is a need to accelerate transformation and upgrades to transform from a leading edge advantage to a customer-aware end-to-end system advantage.The 4G network construction will focus on breadth,depth,thickness,and precision to depth coverage.After in-depth analysis,China Unicom concluded that the difficulty of problem discovery,problem solving and problem landing are serious constraints to the improvement of deep coverage quality of 4G network,which makes deep coverage the biggest bottleneck of 4G network.Compared with outdoor coverage planning,the current construction needs of indoor coverage planning mainly come from user complaints,government-enterprise needs and co-location needs.It can only solve the problems one by one,lacking the overall planning of the whole network,and unable to plan and solve the indoor coverage enhancement of the whole network.,And there are many problems,such as the design of indoor coverage system is too complex,the traditional indoor distribution system adopts the networking form of coaxial cable and passive devices,and the line loss and coupling degree need to be comprehensively considered in the design process,which is difficult to design and requires a large amount of calculation work.Complex construction technology;The traditional indoor covering system needs to use a large number of passive devices and streets in the process of construction,which has higher requirements for manual work intensity and technical level.The degree of cooperation between owners is low,and now the awareness of owners and environmental protection and rights protection is continuously rising.However,the traditional indoor distribution construction requires a large amount of work,which makes it quite difficult to construct in residential areas.It is difficult to maintain,the traditional passive distribution system is difficult to manage,the aging speed of equipment is fast,serious corrosion and falling off are easy to occur in the process of use,and it is difficult to detect and solve in time,thus leading to the quality of indoor coverage is not guaranteed.The update efficiency is low,and the traditional indoor coverage method is difficult to meet the requirements of the current network for equalization in terms of power and capacity,and the one-way distribution method also does not meet the requirements of 4G network for antenna transceiver mode.Therefore,by making full use of the correlation analysis between MR and XDR,the longitude and latitude information in signaling data is given to MR data,and the network information and location information are matched.Through modeling,a scientific and accurate indoor coverage planning support method is established to effectively realize the accurate positioning of network coverage problem.By promoting the landing application of the best construction mode and taking the application scenario as the traction,the LTE construction application scheme library including several typical scenarios is established.According to the matching principle of scenarios and the priority principle of scheme selection,the three libraries of "scenario library","scenario library" and "case library" are organically combined,and the menu of sub-scenario solutions is realized with consideration of both quality and benefit.Type output,flexible construction according to the scheme template,effectively cope with the difficulty of solving the problem of 4G network.Through the establishment of multi-dimensional index quality evaluation methods and standards,we can achieve accurate quality evaluation and problem location of deep coverage network,and implement specific optimization measures of macro station and sub-base station,promote new construction methods,and improve the effect of solving deep coverage problem points.The rapid improvement of LTE network coverage and customer perception is realized.