| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a path controller capable of setting an upper limit value of traffic for every source address and to provide a data transmission system equipped with this path controller. <P>SOLUTION: The data transmission system 1 includes: a radio transceiving part 4 prepared on the ground; a radio transceiving part 50 prepared in a train T and used for transceiving a packet with the radio transceiving part 4; a router 3 prepared on the ground for transceiving a packet with the radio transceiving part 4 through one of ports 30; a sensor data transmitter 6 prepared on the ground and connected with either of ports 30 of the router 3 for transmitting the data as a packet to the train T; a sensor transmission controller 2 for controlling the router 3 and controlling the traffic amount of the packet, which is transmitted and received with the router 3; and a sensor data receiving part 54 prepared at the train T for receiving the data, which is transmitted from the sensor data transmitter 6, through a radio transceiving part 50. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
