COMMUNICATION METHOD FOR A TOLLING SYSTEM COMPRISING A SERVER AND AT LEAST ONE ON-BOARD-UNIT
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United States of America Patent
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Aug 13, 2015
app pub date -
Feb 9, 2015
filing date -
Feb 10, 2014
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Abstract
A communication method for a tolling system having a server and at least one on-board-unit includes: predefining a message communication protocol comprising a predefined set of messages to be transmitted between the server and the on-board-unit; initializing a message format for each of the messages, the message format comprising a fixed length part and a variable length part with at least one status table; and assigning a multilevel security using at least two security levels attached to the messages and granted to the server and/or the on-board-unit.
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