公开(公告)号：EP1727311A1

公开(公告)日：2006-11-29

申请号：EP05291105.4

申请日：2005-05-23

申请人： Siemens Transportation Systems S.A.S.

发明人： De Lajudie, Raphaelle ,  Loudhaief, Wissam ,  Renard, Nicolas ,  Rivoalen, Mathieu

IPC分类号： H04L12/28 ,  B61L27/00

CPC分类号： B61L27/0005 ,  B61L2205/02

摘要： The present invention discloses a communication system between a vehicle network and a wayside network that takes frequently in account the quality of a radio-frequency connection between a plurality of distinct clients in the vehicle and respective access points at the wayside in order to provide a stable connection with permanent high quality. According to the invention, the transmission/reception of a data stream over a first low quality's client based gateway between the vehicle and the wayside network can be re-directed in real-time over a second higher quality's client based gateway. By this solution, the usual slow functionality of roaming between a single client in a train and access points at the wayside can be avoided. Moreover, the re-routing is performed by dedicated routers in the vehicle and at the wayside so that the typical roaming procedure is enhanced even if the access points are linked to different wayside subnets.

摘要翻译： 本发明公开了一种在车辆网络和路边网络之间的通信系统，其经常考虑到车辆中的多个不同客户端之间的射频连接的质量以及在路边的各个接入点，以便提供稳定的 连接永久高品质。 根据本发明，可以通过第二较高质量的基于客户端的网关实时地在车辆和路边网络之间的第一低质量的基于客户端的网关上发送/接收数据流。 通过这种解决方案，可以避免在列车中的单个客户端和路边的接入点之间漫游的通常较慢的功能。 此外，重新路由由车辆中的专用路由器和路边执行，使得即使接入点链接到不同的路旁子网，典型的漫游过程也被增强。