METHOD FOR DECISION OF END-TO-END TRANSMIT PATH AND SEARCH OF TRANSMIT SLOT FOR TRANSMITTING END-TO-END LOW-LATENCY DATA AND NODE APPARATUS PERFORMING THE THEORY

摘要

The present invention relates to a method for searching an end-to-end transmission path and a transmission slot for end-to-end low-latency transmission, which is capable of guaranteeing ultralow end-to-end transmission delay, and a node apparatus executing the same. According to the present invention, the method comprises: a step (a) of transmitting a path check request message including an address of a destination node to at least a part of nodes on a plurality of candidate paths from a packet transmission start node to the destination node through flooding when a first node in a network is the packet transmission start node; a step (b) of receiving the path check request message from a previous neighboring node on a candidate path including the first node when the first node is a node neighboring to the destination node among the nodes on the path, and transmitting a response message to the path check request message to the previous neighboring node having transferred the path check request message; a step (c) of transferring the path check request message received from the previous neighboring node on the candidate path including the first node to a next neighboring node on the candidate path including the first node when the first node is a middle node excluding the destination neighboring node among the nodes on the path, and updating the response message received from the next neighboring node to a response message thereof to transfer the updated response message to the next neighboring node; and a step (d) of comparing delay for each candidate node recorded in the received response messages when the first node is a packet transmission start node finally receiving a response message to select a path satisfying a required end-to-end delay value among the candidate paths as an end-to-end low delay path.