AuthorsS. Ozcan, I. Livadariu, G. Smaragdakis and C. Griwodz
TitleLongitudinal Analysis of Inter-City Network Delays
AfilliationCommunication Systems
Project(s)The Center for Resilient Networks and Applications
Publication TypeProceedings, refereed
Year of Publication2023
Conference NameNetwork Traffic Measurement and Analysis Conference (TMA)
Keywordsbig network data analysis, Internet measurements, longitudinal analysis, RTT delay
During the last decades, public and private investments contributed to building the Internet infrastructure, including undersea cables, long-distance fiber links, broadband networks, and satellite constellations to reduce end-to-end delay. However, a systematic longitudinal analysis of end-to-end network delays between major city pairs is still missing. In this study, we measure the inter-city delays over the last six years, considering 17 major metropolitan areas around the globe. Our analysis shows that the delay for 88% of city pairs end-to-end delay has decreased. Moreover, we study delay changes for regional and long-haul (intercontinental) pairs. Our analysis shows that end-to-end delay has decreased for 80% and 55% of city pairs in Europe and North America, respectively. Our study also shows that despite the overall decrease in inter-city delays, global phenomena, e.g., the COVID-19 pandemic, profoundly impact many inter-city connections simultaneously while not affecting others. 
Citation Key43268