Radwin Transportation FiberinMotion - Page 80

FinMDeploymentGuide Release4.5.10 3‐14
IntraTrainHandover(ITHO)UpdateMessage NetworkGuidelines
TheIntraTrainHandovermechanismdiscoversthatahigherthroughputcanbeachieved
throughTMU‐B,definedatpresentasPASSIVE.(TMU‐BmaybeconnectedtothesameTBSas
TMU‐Aortoadifferentone‐thisdoesnotaffecttheITHO).
AnITHOisthereforeinitiatedandTMU‐Bisre‐definedasACTIVE.TMU‐Bthensends2update
messages(markedinblueinFigure 3‐10):
• Updatemessagetowaysidecorerouterwithon‐boardrouterMAC‐toupdatethewa y ‐
sideL2networkofthenewdatapath(sameprocessasintheIBHOupdatedescribed
above)
• UpdatemessagetotheotherTMU(TMU‐A)withthewa ysidecorerouterMAC‐to
updatethetrainL2networkofthenewdatapath.
Figure3‐10:ITHO‐Part2