SYNCHRONIZATION METHOD OF A RING NETWORK CAPABLE OF TRANSMITTING A SYNCHRONIZATION MESSAGE FROM A MASTER NODE AND A SLAVE NODE TO TWO PORTS WHICH MEASURE TRANSMISSION OR TIME STAMP IN EACH PORT

摘要

PURPOSE: A synchronization method of a ring network is provided to maintain seamless network synchronization owing to constant accuracy.;CONSTITUTION: A master node transmits the same synchronization messages through two ports(S501). A slave node stores a measured time stamp value of the synchronization message having a short path of the synchronization messages transmitted through the master node(S503). The slave node transmits the same delay messages through two ports(S504). The master node stores a measured time stamp value of the synchronization message having a short path of the synchronization messages transmitted through the slave node(S505). The slave node performs synchronization with the master node.;COPYRIGHT KIPO 2013;[Reference numerals] (S501) Through port A and port B, the first node sends a message to node 3; (S502) Through port A and port B, the first node at the same time outputs a time-stamped message and delivers to node 3; (S503) At node 3, the first time-stamped message arrives at the shortest port and gets saved; (S504) At node 3, through port A and port B, the purpose of the message by node 1 gets delivered; (S505) The first shortest message delivered by node 1 to arrive gets time-stamped; (S506) At node 1, through port A and port B, the time-stamped message receives a reply through node 3; (S507) A time-stamped message from node 3 gets calculated