Multi-channel digital wireless system of a container terminal in Shanghai port
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1. Case description: general introduction
Shanghai Port is one of the largest port groups in China. A container terminal branch of the port is located on the west bank of the Yangtze River on the north side of Waigaoqiao, Pudong New Area, Shanghai, and is in charge of container handling business. As our national-level major infrastructure project and the foundation project for the construction of Shanghai International Shipping Center, the container has maintained a leap-forward production momentum since its official operation in 2000. Top 10 Container Terminals”.
2. Market challenges
Professional wireless communication is the core of the container terminal command and dispatch system. The terminal built a 400MHZ Motorola SmartNet analog trunking communication system in the 1990s. The system once played an important communication guarantee role in port operations with its reliable performance. However, after more than ten years of operation, the system equipment has entered an aging stage, and the system capacity cannot meet the communication and business requirements such as the increasing traffic volume.
The container terminal subsequently adopted conventional walkie-talkies as daily communication equipment. In the more than a year of using conventional walkie-talkies, new problems have continued to emerge. There are more than 500 users in the terminal, and there are more than 30 talk groups to use conventional walkie-talkies. At present, the only 4 frequency points can not meet the needs, and the communication interference is large and the call quality is low, which cannot guarantee the daily command, dispatch and security needs of the port. .
3. Excellent results
Zhendonggang staff said that after installing the MOTOTRBO™ digital conventional communication system, the voice is clearer. Without the confusion of calls during peak hours, smooth and clear calls can be made even in dense box areas, bringing great convenience to work.
Port command and dispatch personnel said that after the application of the MOTOTRBO™ digital conventional system, the port’s command and dispatch capability has been significantly improved. The functions of GPS positioning, group call and single call optimize the difficulty of actual command on site, and can dispatch the port machinery and equipment in time, which not only improves the loading and unloading efficiency, ensures the safety of port loading and unloading, but also generates economic benefits. The remote monitoring and remote killing functions can prevent the radio from being used improperly and improve the utilization efficiency of the call channel.
4. Features and advantages of MOTOTRBO digital conventional communication system
Motorola is convinced that the MOTOTRBOTM digital conventional communication system of Zhendong Container Terminal has the following advantages:
1. Using TDMA technology, higher spectrum utilization: MOTOTRBO™ adopts 2-slot TDMA time-division multiple access digital technology, which can be split into two logical channels in the 12.5KHz relay channel, which can be used by two groups of people at the same time. At the same time when a relay frequency point is used for communication, only one relay device is used, which saves equipment investment for customers and saves valuable frequency resources. The efficient use of the frequency spectrum enables the system to support more users, provides greater wireless voice and data communication capacity, and effectively solves the frequency resource shortage problem faced by the terminal.
2. Better call quality: MOTOTRBO™ digital receivers can filter and suppress noise in voice calls, which is especially important in a busy and complex environment like Zhendong Container Terminal.
3. Stronger data processing functions: MOTOTRBO™ provides stronger data processing functions such as SMS, database query, vehicle location information data transmission and positioning, data collection and transmission, etc., which not only meets the needs of the terminal to realize the positioning of cranes, trucks and other vehicles. problems, and future-proof to meet growing business demands. Meng Chao, sales technical support manager of Motorola’s wireless intercom channel business, said: “The successful application of the MOTOTRBO™ system in Zhendong Port fully reflects the features and advantages of the system in terms of communication. MOTOTRBO™ adopts TDMA technology and the function of dynamic channel allocation. , it is particularly important for Zhendong Container Terminal with limited frequency resources, concentrated use of communication terminals, and large traffic volume. The background noise filtering technology of MOTOTRBO™ digital walkie-talkies ensures that users can still communicate clearly in a high-noise environment such as a port .MOTOTRBO™ is a comprehensive analog and digital dual-mode system that enables users to easily and economically transition to a digital platform on a schedule that works for them.”
Therefore, it is imminent to deploy a more efficient command and dispatch communication system.Taking into account various factors such as frequency resources, use costs, application requirements, etc., Zhendong Container Terminal needs such a command and dispatch communication system: high frequency utilization rate and full use of existing frequency resources; stable, reliable, high-quality, anti-interference voice Communication; with data applications such as group call, single call, remote kill, remote monitoring and GPS positioning, and can be future-oriented to meet growing business needs, and
5. Solutions
Facing the business and communication challenges faced by Zhendong Container Terminal, Motorola partners Beijing Zhongruite Communication Equipment Co., Ltd. and Shanghai Haida Communication Co., Ltd. proposed the construction of MOTOTRBO™ digital conventional communication system, which was adopted by Zhendong Container Terminal. Zhendong Container Code MOTOTRBO™ digital conventional communication system provides: 6 XiR R8200 repeaters, 328 XiR M8268 vehicle radios, 137 XiR P8268 and XiR P8200 handheld terminals, and developed scheduling software and GPS for real-time management of users GPS. Shanghai Haida Communication Co., Ltd. signed a supply contract with Beijing Zhongruite in late April 2010, and all the equipment was in place in late May, one month ahead of the two-month deadline. The system was installed and tested without affecting the normal operation of the port, and was put into operation at the end of June. The system covers the entire port within a radius of one kilometer.
The representative technician of Beijing Zhongruite Shanghai Office said: “Using the MOTOTRBO™ system, one base station can cover the entire Zhendong Container Terminal, and the more economical investment finally prompted customers to choose this system. In view of the problems of insufficient port channels and many users in the past , we recommend the MOTOTRBO™ Capacity Plus (Intelligent Channel Sharing) solution. Capacity Plus expands the MOTOTRBO™ system with 12 voice channels and 24 additional dedicated data channels, providing excellent support for 1200 users on demand. Throughout the solution During the development of the solution, we actively listened to customer suggestions, rationally planned the communication system, fully met customer needs and controlled the investment scale. During the equipment installation and testing process, we worked closely with Motorola engineers to solve the problems encountered in the actual operation of the system. Difficult, the client is very satisfied.”
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