| 摘要 |
PROBLEM TO BE SOLVED: To provide a radio connection system for trains and ground networks, which is capable of ensuring continuity of data. SOLUTION: The radio connection system includes a mobile device 12 mounted on a train 10, two or more access points 16A installed along a line 14 of the train 10, and a data transfer controller 20 for performing the control of data transfer between the access points 16A and a ground network 18. The data transfer controller 20 includes data ports, a MAC learning table making MAC addresses of transfer processing data correspond to the data ports, and an update control part for performing update processing of the MAC learning table. When a change signal transmitted by a change signal transmission part comes to one of two or more data ports, the update control part performs update of the MAC learning table so as to change a data port corresponding to a MAC address of the mobile device 12 to the data port to which the change signal has come. COPYRIGHT: (C)2006,JPO&NCIPI
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