REQUIREMENTS: Skymetro (Automated People Mover) is a subterranean air cushion cableway for passengers at the Zurich Airport. Per hour, it can transport up to 4,200 passengers between the Airside Center and Dock E which is more than 1 kilometer away. The challenge was to build a WLAN network that allows for the control of unmanned trains. The most important criterion of this project was to ensure a failure-free roaming at high speeds.
The local circumstances of the Skymetro trains running between the Airside Center and the Dock Midfield in the two Skymetro tunnels represented a challenging environment for the wireless infrastructure. Cisco components coupled with an efficient engineering made it possible to offer a solution solving previous connection problems. The customized solution included a WLAN controller, access points and antennas and was set up in a way that it could be easily extended to a video surveillance system. A redundant design fulfilled the requirements in terms of the high operational availability of the wireless infrastructure. And the setup of an active monitoring and alerting of the components allowed for a constant analysis of the system behavior. Relevant operational data needed to be permanently recorded in order to be able to take the necessary measures in case of Errors.
WLAN-PARTNER SOLUTION: The experienced system engineers of WLAN-Partner conducted site surveys and performed roaming tests as well as diverse measurements to define the optimal positions of the access points. Fast and constant transfer processes between the access points and systems in the vehicles were key for a smooth communication. Based on the measurement results, WLAN-Partner evaluated the appropriate equipment (antennas, router, etc.) to meet the complex requirements. After running successful tests and pilots, WLAN-Partner implemented the productive system.