@inproceedings {43268,
	title = {Longitudinal Analysis of Inter-City Network Delays},
	journal = {Network Traffic Measurement and Analysis Conference (TMA)},
	year = {2023},
	publisher = {IEEE/IFIP},
	abstract = {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.\&nbsp;},
	keywords = {big network data analysis, Internet measurements, longitudinal analysis, RTT delay},
	author = {Ozcan, Selim and Livadariu, Ioana and Smaragdakis, Georgios and Griwodz, Carsten}
}
