Towards a Digital Twin for LEO Non Terrestrial Network Performance

Abstract: The rapid expansion and increasing complexity of Low Earth Orbit (LEO) satellite constellations demands new digital twins for accurate predictive network performance evaluation. Modern LEO networks feature highly dynamic topologies, dense satellite deployments, and integration with terrestrial 5G/6G systems — that well-exceed current open-source/broadly available simulation tool capabilities. A high-fidelity Digital Twin model should capture real-time mobility considerations for time-varying LEO-to-earth downlink, emerging regulatory considerations (e.g. spectrum allocation driven coexistence/interference), orbit-aware inter-satellite coordination aspects, to feed into future AI-driven resource optimization architectural solutions. This talk will start by pointing out deficiencies in current 3GPP TR 38.111 and 6G-NTN EU Doppler spread models and its consequent impact downstream on NTN Downlink PHY Layer 1 processing and highlight ongoing efforts via ns-3-leo full stack network simulator at UW Fundamentals of Networking Lab (https://wp.ece.uw.edu/funlab/). Speaker: [] Prof. Sumit Roy Guest Scientist, Nokia Bell Labs (Radio Systems Research) sumit.1.roy@nokia.com Dept. of Electrical & Comp. Eng U. Washington, Seattle sroy@uw.edu Sumit Roy (Fellow IEEE) received the B. Tech. (EE) degree from the IIT Kanpur in 1983, and M. S. (1985) and Ph. D. (1988) degrees from the University of California (Santa Barbara) in Electrical & Comp. Engineering as well as an M. A. in Statistics and Applied Probability (1988). He has been a faculty member in Electrical & Computer Engineering (UW) since 1998 where he was appointed to a Distinguished Term Professorship for Integrated Systems (2014-19) in recognition of his scholarly accomplishments. He continues to direct the Fundamentals of Networking Laboratory (FUNLaB) https://wp.ece.uw.edu/funlab/, the long-standing maintainer/manager of the Open Source network simulator ns-3 project (www.nsnam.org), recognized via the ACM SIGCOMM Networking Systems Award 2020 for “development of a networking system that has had a significant impact on the world of computer networking” https://www.sigcomm.org/content/sigcomm-networking-systems-award. His expertise spans analysis/design and prototyping of future wireless communication systems/networks: next-Gen wireless LANs, 5G New Radio and beyond 5G/6G standards, with an emphasis on terrestrial and airborne (vehicular) applications, multi-standard inter-networking/coexistence and dynamic spectrum access solutions for spectrum sharing. He spent 2001-03 on academic leave at Intel Wireless Technology Lab as a Senior Researcher/Standards Architect engaged in systems architecture and standards development for ultra-wideband systems (Wireless PANs) and next generation high-speed wireless LANs (802.11n). He was elevated to IEEE Fellow in 2007 for “contributions to multi-user communications theory and cross-layer design of wireless networking standards”. He served as Program Lead for Innovate Beyond 5G, the R&D component of OUSD R&E’s 5G-to-xG Initiative (2020-22) , where managed a RD&P portfolio focused on dual-use of commercial (5G) technologies for Federal use cases and oversaw 3GPP contributions. He is currently Distinguished Lecturer for IEEE Future Networks Technical Community (https://futurenetworks.ieee.org/) and IEEE Comm. Society (https://www.comsoc.org/engagement-community/distinguished-lecturers) and serves as Assoc. E-i-C for IEEE Comm. Standards Magazine (https://www.comsoc.org/publications/magazines/ieee-communications-standards-magazine/editorial-board). Virtual: https://events.vtools.ieee.org/m/561632