Precise analysis and measurement method for delay composition of time-sensitive networking

When estimating the maximum transmission delay At between adjacent nodes according to TSN (time-sensitive networking) standards, it was inevitable to introduce additional ineffective wailing lime, which was referred to as bubble delay. The negative effect of bubble delay on increasing the end-to-end delay and decreasing the planning success rate was analyzed, and the precise measurement method of A* was proposed for the first lime based on analyzing the delay composition of At in fine granularity. Based on the exact At, the bubble delay caused by TSN planning was eliminated. A real lest environment was built based on two customized TSN switching devices. The test results show that the bubble delay accounted for 26. 4% of the end-to-end delay at least, and the planning success rate increased by 8. 9% to 39. 1% alter eliminating the bubble delay. © 2024 National University of Defense Technology. All rights reserved.