Integrating ground forces dispatching, subway security, rapid response to and disposal of emergencies;

Creating the ground-underground integrated metro public security emergency command and communication system

I. Industry Demand

The subway is part of the city fast orbit transportation, with such advantages as large capacity, fastness, punctuality, low energy consumption, less pollution, no limitation to the external weather conditions and comfortable and convenient ride, and is often referred to as "green traffic". Urban metro transportation is the indispensable infrastructure of the modern city development. It is not only an important symbol of measuring the urban modernization, but also an important guarantee for sustaining the development of urban economy.

However, as the public transportation of high density and large flow of population, the subway is characterized by large flow of people, complex geographical environment, and difficult management, etc., and in the event of fire, accident or terrorist attacks events, it is easy to cause heavy casualties, with its social influence and political influence and international influence being very serious. Looking at the world metro situations, terrorist attacks and disaster events are shocking by sight, such as Japan's Tokyo subway sediment phosphorus gas event, Moscow subway bombings and Korea Daegu subway serious fires, and all this manifests that subway security should not be ignored.

Metro Public security substations take on the security task for the safety of the subway. With the rapid advancement of subway construction, its security task will be more onerous. It has been unable to meet requirements of the urban management in the new period for the subway security relying on the work patterns of "Management of Civil Air Defense" and "Huge-crowed Strategy". Therefore, it has become the major problem facing the metro police department how to use high-tech equipment to necessarily monitor, manage, and command all kinds of factors (personnel and event conditions, etc.) on the scene so as to provide sufficient, accurate, timely information and the required information needed to take actions and decisions for major site security and to make the blow and round-ups quicker and more precise.

II. Solutions 

Relying on nearly 20 years of experience in the technology, the accumulation of products, and the support for emergency command and communication in the field of professional mobile communication, fully absorbing the experience in planning, constructing, using and maintaining the urban subway public security 350 million wireless trunking communication system in Beijing, Shanghai, Tianjin, Chengdu, Xi 'an, etc. and combined with the advantages of the existing analog and digital Trunking system, ACETEC has independently researched and developed the entire network/entire IP soft switch digital trunking communication system – ADT-6000, by using the advanced design philosophy and by taking the latest development of mobile communication at home and abroad for reference. The ADT-6000 will enable the command department to have a real-time and accurate grasp of the distribution and locations of police forces along all stations in the underground and on the ground, and carry out a real-time monitoring on their duty status so as to achieve reasonable, effective police deployment and adjustments, and in the event of sudden incidents, to deploy and respond quickly, and finally to improve the ability to respond and handle the subway emergencies.

ADT-6000 metro private wireless communication system includes: PDT switching control centers, PDT base stations, wireless coverage systems, wired/wireless link mutual backup systems, command and dispatch systems, network management systems, recording systems, different network interconnection systems.

III System Features

1. Wire/wireless dual-link standby networking, to guarantee the real-time smooth of ground and underground-integrated command

The metro base station uses the networking of wire link with switching control center as the main operation mode, while establishing wireless connections to the ground main base station of the municipal public security bureau with wireless networking standby equipment. Once the switching control node or wire link fails and breaks off, the system starts operating automatically to guarantee no interruption of command and communication on the ground and underground.

2. Application of positioning technology, real-time mastery of the distribution of the police force

Using a variety of technological means to determine the underground positional accuracy, and providing the technological support for the adjustment and deployment of police forces to respond to and handle sudden terrorist events.

3. Carrier-class performance, to ensure reliable operation

In industrialization design, with carrier-class performance and high environmental fitness, to guarantee continuous operation 24 hours a day under the limited machine room.

4. Open network architecture, to realize the resources integration

Able to realize the interconnection and internetworking with TETRA digital trunking, MPT analog trunking, conventional wireless/wire equipment and to realize unified dispatch. 

IV. Typical Cases

·350 million police emergency wireless trunking communication system for Beijing Metro line 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 14, 15 etc., and Yizhang, Changpin, Daxing, Fangshan lines, the Olympic Extension, and airport line;

·350 million police emergency wireless trunking communication system for Guangzhou Metro line 2;

·350 million police emergency wireless trunking communication system for Shanghai Metro line 4 in the second phrase;

·350 million police emergency wireless trunking communication system for Tianjin Metro line 1, 2, and 3, the transportation junction of Tianjin Railway Station, Binhai Mass Transit;

·350 million police emergency wireless trunking communication system for Xi’an Metro 1 and 2;

·350 million police emergency wireless trunking communication system for Chendu Metro 1 and 2;