| 日時(Date) |
2023年 6月 7日 (水) / Wed. Jun. 7th, 2023 4限 (15:10--16:40) / 4th period (15:10--16:40) |
|---|---|
| 場所(Location) | エーアイ大講義室, AI Inc. Seminar Hall （L1） |
| 司会(Chair) | 笠原 |
| 講演者(Presenter) | Richard T. B. Ma (School of Computing, National University of Singapore) |
| 題目(Title) | Research on Internet Transport Economics |
| 概要(Abstract) | With the rise of video streaming and cloud services,the Internet has evolved into a content-centric service platform. Due to the best-effort service model of the Internet, the quality of service (QoS) of Internet services however cannot be guaranteed. Furthermore, characterizing QoS is challenging since it depends on the autonomous business decisions such as capacity planning,routing strategies and peering agreements of network providers. To quantify the QoS for Internet-based services, we regard the Internet infrastructure as a transport system for data packets and study the Internet ecosystem and the economics of transport services collectively provided by the autonomous network providers. In contrast to the traditional transport economics that studies the movement of people and goods over space and time, our focus in the Internet transport economics is the movement of streams of data packets that create information services. In particular, we model the supply of network capacities and demands of throughput driven by network protocols and establish a macroscopic network equilibrium under which both the end-to-end delays and drop rates of Internet routes can be derived. We show that this equilibrium solution always exists and its uniqueness can be guaranteed under various realistic scenarios. We analyze the impacts of user demands and resource capacities on the network equilibrium and provide implications of Netflix-Comcast type of peering on the QoS of users. We demonstrate that our framework can be used as a building block to understand the routing strategies under a Wardrop equilibrium and to enable further studies such as Internet peering and in-network caching. |
| 講演言語(Language) | English |
| 講演者紹介(Introduction of Lecturer) | Richard T. B. Ma is an associate professor with the Department of Computer Science, School of Computing, National University of Singapore. His research interests include cloud computing, distributed data and AI systems, and Internet economics and evolution. He leads the Systems, Analytics, Networks, Economics (SANE) group, which develops cloud-based data systems and performance models/analyses of network systems. Richard received his Ph.D. from Columbia University in 2010. During his Ph.D. study, he interned at IBM Thomas J. Watson Research Center, NY, USA, and Telefonica Research, Barcelona. He received the Best Paper Award Runners-up from the ACM Mobihoc 2020 and a co-recipient of the Best Paper Award in the IEEE IC2E 2013, the IEEE ICNP 2014, and the IEEE Workshop on SDP 2015. He is a Senior Member of the ACM and IEEE. |