Method and system for updating train control data using broadband wireless access system

Abstract

A system and method for updating train control data are provided. The system for updating train control data can operate to revise, update and maintain the corresponding train control functions installed in an on-board device without workers directly approaching on-board and ground devices using a broadband wireless access system. The on-board device is configured to receive train control data classified by identification information via a wireless network and determine whether the train control data is train control data to be updated using the identification information. The on-board device is configured to update the train control data depending on whether the train control data is the train control data to be updated.

What is claimed is: 
     
         1 . A system for updating train control data comprising:
 a ground control unit that is installed on the ground and includes a ground function controller configured to generate train control data and a ground wireless communication unit configured to give identification information identifying train control data and transmit the train control data including the identification information to an on-board device via a wireless network; and   an on-board device that is installed in a train and includes an on-board wireless communication unit configured to receive the train control data and check the identification information included in the train control data and an on-board function controller configured to update the train control data under control of the on-board wireless communication unit.   
     
     
         2 . The system of  claim 1 , wherein the ground wireless communication unit is configured to give certain predetermined identification information to train control data to be updated out of the train control data. 
     
     
         3 . The system of  claim 2 , wherein the train control data to which the certain identification information is given includes at least one of data on automatic train protection (ATP), automatic train operation (ATO) and automatic train supervision (ATS) functions. 
     
     
         4 . The system of  claim 1 , wherein the on-board wireless communication unit comprises:
 a wireless data receiving unit configured to receive the train control data transmitted from the ground wireless communication unit, process the received train control data and determine whether the received train control data is the train control data to be updated;   an updated data buffer configured to temporarily store the train control data to be updated out of the received train control data; and   an on-board device interface unit configured to transmit the train control data received from the wireless data receiving unit and the train control data stored in the updated data buffer to the on-board function controller.   
     
     
         5 . The system of  claim 4 , wherein the wireless data receiving unit is configured to receive the train control data from the ground wireless communication unit, determine whether the certain predetermined identification information is given to the received train control data, verify the received train control data as train control data to be updated when the received train control data includes the certain identification information and store the train control data to be updated in the updated data buffer. 
     
     
         6 . The system of  claim 4 , wherein the wireless data receiving unit is configured to transmit the received train control data to the on-board device interface unit when the received train control data does not include the certain identification information. 
     
     
         7 . The system of  claim 4 , wherein the on-board device interface unit is configured to transmit the train control data stored in the updated data buffer to the on-board function controller when an update start signal is received from the ground control unit via the wireless data receiving unit. 
     
     
         8 . A method of updating train control data comprising:
 receiving, at an on-board device, train control data classified by identification information from a ground control unit via a wireless network;   determining, at the on-board device, whether the train control data is train control data to be updated using the identification information; and   updating the train control data at the on-board device, depending on whether the train control data is the train control data to be updated.   
     
     
         9 . The method of  claim 8 , wherein the train control data to be updated includes at least one of data on ATP, ATO and ATS functions. 
     
     
         10 . The method of  claim 8 , wherein the on-board device is configured to determine whether the received train control data includes the certain predetermined identification information, and verify the received train control data as train control data to be updated when the received train control data includes the certain identification information. 
     
     
         11 . The method of  claim 8 , further comprising:
 temporarily storing, at the on-board device, the train control data to be updated in an updated data buffer when the received train control data is verified as the train control data to be updated; and   updating the train control data to be updated, which has been temporarily stored in the updated data buffer, at an on-board function controller when the update start signal is received from the ground control unit via the wireless network.