RADIOCOMMUNICATION INFRASTRUCTURE FOR A RAILWAY SIGNALLING SYSTEM OF THE CBTC TYPE

摘要

This infrastructure comprises a network (100 200) MPLS; first and second groups of access points associated with each section of the track each group forming a local network linked to the network; first and second modems (22 42) on board the train (16) for communication with access points (20 40) of the first and second groups. The network comprises pairs of local switches (122 132) each pair being associated with a section of the track and comprising a first respectively a second local switch for communication with the first respectively second group of access points of the associated section and first and second central switches (112 114) the switches being in series with one another and implementing a service for defining paths between each central switch and each local switch so that the path between the first central switch and the first local switch of a pair of switches and the path between the second central switch and the second local switch of this pair correspond to separate portions of the ring formed by the network.