| In recent years,with the continuous development of mobile communication wireless data traffic exploded,mobile operators 2G/3G network overall utilization is rising gradually,has brought tremendous pressure to the cellular network and mobile network standard evolution,intelligent mobile phone and height as well as the application of wireless communication based on the emergence of a large number of people,not only have a higher user experience requirements for outdoor wireless communication,wireless communication and quality of the indoor environment also have higher requirements,but in actual engineering,wiring pipeline,covering buildings equipment cables limited resources,while also taking into account the cost of investment,to avoid duplication,so the necessity and urgency of the indoor distribution system of road construction is becoming more and more serious.The most effective way to solve the building depth coverage is to build indoor distribution system.Analysis of the present stage of the indoor distribution system,expounds the concept of indoor distribution system,through the introduction of indoor distribution system composition,classification,common equipment,signal source etc.detailed analysis of the selection principle of the signal source,indoor distribution system based on the signal distribution method and application scenarios for each distribution and main advantages shortcomings.This paper discusses the basic theory of WLAN indoor distribution construction project at the same time,focuses on the description of the design of WLAN indoor distribution system,and to the city of Changzhou stadium Exhibition Center as an example,analyzes the design of WLAN signal coverage point selection,and traffic analysis and frequency planning according to the indoor distribution quantity of IEEE802.11 series WLAN the basic technology and user access to the exhibition center,indoor distribution based on the principle,according to the site survey,analyzed the indoor distribution system design requirementscoverage prediction edge strength,an important area of coverage,source selection and active use of equipment,room cable,proposed by WLAN and GSM combined mode of indoor distribution system design,the system has been tested and optimized,demonstrated GSM and WLAN based on the way into the The feasibility of indoor distribution system provides valuable experience for the next whole network promotion,as well as the further development of multi mode indoor distribution system. |