English 
Views: 6 Author: Site Editor Publish Time: 2019-12-30 Origin: Site
Xianyang International Airport is an important gateway airport in China. It is the largest air transportation hub in Northwest China. It is also the ninth largest airport in Mainland China (passenger throughput in 2014) and the fifth largest airport (area) in the country. The airport's design capacity is 100,000 flights per year, 50 million passengers per year, 500,000 tons of cargo and mail, and 32 flights during peak hours. The airport's passenger throughput reached 29.206 million in 2014.
The production and operation of Xianyang Airport needs real-time, reliable, large-scale, dense user wireless data transmission requirements to ensure, which is not met by ordinary communication systems. In order to solve the information exchange between the ground and passenger dispatch, baggage and mail handling, cargo handling, aviation fuel, aviation food, maintenance, ground vehicles and other dispatching commands, Xi'an Xianyang Airport uses the LTE multimedia broadband trunking dispatch system Transform the airport's own airport dispatch communication system.
The three-layer architecture of the 4G multimedia broadband trunking dispatching system is divided into a control center layer, a base station layer, and a terminal layer. The three layers are interconnected through wired and wireless methods to form a 4G multimedia broadband trunking dispatching system.
As the core processing unit of the entire network, the LTE core network device is responsible for the management and control of the entire network sub-units. In the control center subsystem, each professional application subsystem is connected to the LTE core network unit through a router to achieve communication between the control center and the wireless terminal side. The control center layer supports the airport ground handling vehicle positioning business and the dispatch tasks assigned by work orders, which greatly improves the work efficiency of the airport ground handling.
The base station system includes LTE base station equipment BBU (Base band Unit) equipment and RRU (Radio Remote Unit) equipment to cover airport stations and tunnel areas. Each LTE base station accesses the network switch through 100M Ethernet, and connects with the control center through the channel provided by the communication transmission system. The BBU equipment is connected to the RRU equipment through optical fiber. The BBU equipment can be placed in a dedicated communication room. The maximum optical fiber distance between the BBU equipment and the RRU equipment is 20km.
According to the requirements of wireless signal coverage, the RRU equipment is arranged on the terminal building, and the wireless coverage is extended through the RRU + plate antenna to achieve wireless data communication with the vehicle-mounted wireless equipment. The airport's outfield runway and the city have 4G wireless network coverage, and at the same time connect the data interconnection between the airport and outside.
The traditional working mode of the airport can only use the voice intercom mode of the analog cluster to communicate the location information of the vehicle, which often results in inefficient use of the vehicle. 4G multimedia broadband trunking dispatching system terminals are divided into handheld terminals and vehicle terminals. The airport staff is equipped with handheld computers, which can implement cluster, video and data functions.
A set of vehicle-mounted equipment is set on the front of the work vehicle, which can realize the cluster function and simultaneously receive real-time data information provided by the control center and send real-time video monitoring information to the control center. The rich terminal configuration brings unprecedented convenience to airport staff. Now using rich terminal types, the vehicle's location information can be reported in real time. At the same time, voice and video are used to communicate with each other, which greatly improves the command center's access to the airport. Vehicle and personnel utilization efficiency.
According to the forecast and evaluation of comprehensive indicators, by 2020, the passenger throughput of this system will increase by 7% year-on-year in 14 years, the number of flights and landings will increase by 25%, and the cargo and mail throughput will increase by 110%. Through the construction of the 4G multimedia broadband trunking dispatching system, Xi'an Xianyang International Airport has entered a brand-new stage for the use of wireless communication services, greatly improving its carrying and dispatching capabilities.
