Huawei powers China’s Da-Qin 30,000-ton heavy-haul railway transportation
Huawei’s latest GSM-R solution has supported China’s Da-Qin Railway Line over a 30,000-ton heavy-duty traction test to increase China’s railway hauling capacity by over 50%. China is one of few nations to succeed in transportation of 30,000-ton heavy-haul trains in existing railway systems.
Da-Qin Railway Line spans 53 km across northeastern China and transports around 400 million tons of the country’s coal each year, and is the first China railway line to integrate a GSM-R communications system.
During the deployment of the GSM-R solution on Da-Qin Railway Line, Huawei had replaced the line’s repeaters with the latest DBS3900 base stations. With the deployment of the DBS3900 base stations, Da-Qin Railway Line is able to solve issues caused by repeaters, including short service life, poor immunity to interference, and network performance deterioration due to aging device. In addition, Huawei specially developed and implemented a RRU multi-site cell technology for the railway line, incorporating the remote radio unit (RRU) in different physical sites through the control of the baseband unit (BBU), overcoming frequent network handovers and weak coverage under a high-speed environment. The RRU multi-site cell technology significantly reduces the number of network handovers and improves network handover success rates, especially in tunnels, while going full-speed. This ensures the stability and security of data services in multiple locomotive operation and control for long heavy-haul trains, and effectively alleviates the shortage of frequency resources for railway communications.
To enhance reliability and convenience of maintenance of the entire network by Da-Qin Railway Network, Huawei customized a hot-back solution which combines the geo-redundancy solution in wireless network with the improved geo-redundancy backup solution for soft switching in the core network. Upon adoption of this solution, the mean time between failures (MTBF) is significantly increased, preventing network failures due to faults in any node or device. The Huawei Base Station Controller (BSC) node redundancy solution in Huawei’s GSM-R solution resolves problems of existing solutions in the industry, including slow device start-up, data switchover, and insufficient effective surveillance and maintenance methods. To enable quick and automatic switchovers between active and standby BSCs, As for Huawei’s BSC duo-redundancy solution enhances further stability of the system in carrying upper-layer services. To address the need for Da-Qin Railway Line to achieve synchronous control and high standards of safety and reliability, Huawei implements a redundancy backup solution to ensure smooth running of wireless networks. As a result, the GSM-R network in the Da-Qin Railway Line is able to achieve full E2E redundancy backup in the core network, BSC, and Base Transceiver Station (BTS). This greatly improves network reliability and ensures efficient and smooth operation of the Da-Qin Railway Line.
To address the evolution of railway transportation technologies, Huawei has been working closely with railway operators around the world to develop and implement GSM-R railway networks. By the first quarter of 2014, Huawei GSM-R solutions covered 24,000 km of railway lines globally. In 2013, Huawei achieved a 75% share of new contracts in the global GSM-R market. Moving forward, Huawei will continue to provide high-quality customer-centric GSM-R products, solutions and services for customers in the railway industry, contributing to the modernization and digitalization of modern railway communication networks.
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