Patent ID: 9369862
Filing Date: 2016-06-14
CPC Classification: H04B,H04W

Claim Text:
1. A vehicle communication system, comprising: an internal local area network (LAN) arranged within a train; at least one antenna for wireless communication with external wide area networks (WAN) outside the train; and a data communication router for providing data communication between said internal LAN and said external WANs, wherein said data communication router includes a plurality of modems for communication with said external WANs, a subscriber identity module (SIM) pool including a plurality of SIMs, the SIM pool including several SIMs related to different operators for each of a plurality of different countries, a global positioning system (GPS) receiver for receiving GPS signals indicative of the current position of the train, and a controller capable of periodically assigning any one of the SIMs within said SIM pool to any one of said modems, wherein the controller is arranged to assign SIMs within said SIM pool to the modems in accordance to which country the train is currently located, as determined by the GPS signals.