Design And Implementation Of Digital Trunking Coverage Of An Airport Terminal

The concept of trunk system comes from translation of ”Trunking”. In trunking system, channel resources can be shared by all users, and system supports auto-channel selection and group assigning, so the resource, cost and channel can be shared. It’s widely used in multipurpose service and highly efficient wireless scheduling. Trunking as one of mobile communication system, it is mainly used for scheduling command communication. Currently most civilairports use 800 M digital trunking systems for communication scheduling in ground traffic control and information exchange among different departments. The systems can provide coverage mainly for Terminals, apron and hosting civil aviation departments.The thesis designs and schemes the coverage in Terminal2 through the trunking system users’ requirement. With the T2’s buiding, most users will move in this place. It’s a great challenge for trunking system.At the beginning of the building, to examining the existing base station coverage performance, we test cluster signal on Terminal2, and find that the communication quality is poor. Through the statistics, we found that the current base station capacity load is close to saturation. After the completion of the new terminal, the users will increase sharply. Only by adjusting the increase base station antennas, and network optimization have been unable to meet the demand of users. To solve the 800 M digital clustering system’s weak signal in Terminal2, make sure the user in Terminal 2 can immediately use cluster system for scheduling command. We combine the airport TETRA cluster system with experience of the construction of the cluster network. Through comprehensive consideration, we should build a new base station in advance. Then the article introduces the build of the base station scheme with the airport terrain conditions. As Terminal2 is built, we tested the inside of the signal, and found the inside of Terminal2’s steel structure and interior is more complex than we desiged, cluster signal cannot be reached. But for these small weak coverage area, rebuilding the base station orbuilding a new base station could waste a lot of resources, and the base station construction fee is expensive. Therefore we decided to adopt the method of indoor coverage in these blind area. the thesis describe indoor coverage principle, discussed the frequency shift repeater, fiber optic repeater stations and same frequency repeater station technology in the application of indoor coverage. Through analysis and comparison, choose the most suitable solution for airport Terminal2, then we take part in designing the cluster network coverage, project deployment, and construction. Compared with other airport schemes, this scheme is more suitable for the airport, because it consides the airport’s conditions and the users’ requirement, including the number of frequency carrier and the selection of repeater stations. After finishing this project, we find that system can provide a better communication scheduling services and explore more about 800 M airport digital trunking mobile communication system coverage solution. The thesis solve the problem of Terminal2 digital cluster signals.