| The development of mobile internet and intelligent terminals has stimulated people's desires for mobile broadband services. As a 4G technology independently developed by China, TD-LTE, characterized by peak rate, dynamic bandwidth configuration and high spectrum utilization and so on, may make various high-speed internet services available.According to statistics of authorities, 90% data services are performed indoors. As a result,there are higher requirements for indoor network coverage.This paper analyzes the status quo of Linxia mobile indoor distribution system construction, and summarizes the existing problems after the implementation of the single indoor distribution and outdoor distribution system, namely the high-rise residential building block due to weak signal coverage in indoor signal difference, indoor living room window,and the adjacence to the window and other in-depth coverage chambers, outdoor public areas. According to TD-LTE business and indoor coverage technology requirements,the indoor and outdoor cooperative coverage technology is introduced and based on the analysis of indoor distribution planning and design system to put forward the design of Linxia mobile high-rise residential TD-LTE indoor distribution system and coverage scheme, and carry on the more detailed research and elaboration the indoor coverage requirement analysis method, the test and analysis on the current situation of network coverage, design scheme selection, signal source design, indoor and outdoor area distribution distribution link budget,distribution system design, test and acceptance and other related contents.In accordance with the standard test methods, for a large residential area in Linxia region the coverage requirements is proposed and according to the network coverage status of formulation design, indoor and outdoor collaborative coverage scheme is taken with indoor distribution system as the main coverage and outdoor distribution system coverage as the supplement to estimate signal source design, distribution system link budget and verify that the system can meet the coverage requirements and put into practice. Then based on test requirements of TD-LTE indoor distribution system, the coverage level and quality, handover success rate, leakage, upload / download rate and other indicator tests are carried out in the residential indoor high school low layer and roads inside and outside of the district, and all the problems found in the acceptance testing process are optimized and solved, with the results achieving design requirements and technical indicators, showing the feasibility of the design scheme.High-rise residential TD-LTE indoor and outdoor distributed collaborative coverage technology can meet the business desired coverage requirements and at the same time, it effectively avoids problems such as serious leakage, and inadequate coverage in elevators,stairs and other regions and the unable satisfaction of residential road coverage requirements for indoor distribution system to meet the effect of indoor and outdoor overall coverage, and there are certain advantages in lowering overall application difficulty and property sensitivity. |
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