To assist the company develop a reliable train-to-ground wireless network, Moxa provided a variety of rail-certified products that were deployed onboard and at the trackside. Our AWK-4121* Series, which was customized for this project, was used onboard as a wireless client to deliver video data seamlessly to the trackside by offering 12 Mbps throughput. This was complemented by WAC-2004 controllers that support 50 ms handoff times, which were located in the control center. Moreover, our customized AWK-4121* Series wireless client features AeroLink Protection which ensures reliable wireless network failover connection times of less than 300 ms. The TAP-6226** wireless trackside units functioned as wireless APs to collect the video data onboard and a built-in fiber Ethernet switch was used to deliver the video data to the fiber network backbone. As the overall length of the metro line exceeds 25 km, the network backbone requires several switches with large bandwidth capabilities to ensure smooth data transmission. The IKS-G6524A layer 2 full Gigabit rackmount switches were deployed at the trackside and the ICS-G7828A layer 3 full Gigabit rackmount switches were utilized in the fiber network backbone to create the Turbo Chain topology. In addition, our rugged trackside wireless unit, TAP-6226**, provided network redundancy by guaranteeing recovery times of less than 100 ms.
All of the products Moxa provided have rugged designs to withstand the harsh environments that are experienced onboard trains and at the trackside. Our products’ features include the ability to withstand strong vibrations, operating temperature ranges of up to -40 to 75°C, and waterproof designs that include products with the IP68-rating. A combination of our unique network technology, rail-certified products, and our sincere customer service allow Moxa to help our customers develop reliable CCTV communication systems that enhance passenger safety onboard trains.