Xi Yang

Xi Yang
Xi Yang
Network Research Engineer

Dr. Xi Yang is a Network Research Engineer at the Scientific Networking Division (ESnet) of Berkeley Lab. He is currently leading the development of the SENSE orchestration system ( and the NSF FABRIC testbed ( network control system. His research interest includes advanced network architecture, next-generation Internet, optical networking, large-scale network testbed and application, network middleware for science workflows, and cloud computing. He is also exploring the quantum communication and networking  (, and the advanced wireless networking (5G/6G) areas.

Before joining the ESnet, Dr. Xi Yang was a senior research scientist and the director of R&D at the University of Maryland / Mid-Atlantic Crossroads, and also a PI and Co-PI for several research projects funded by DOE and NSF.  He worked with Lucent Technologies as a member of technical staff in Bells Labs, Beijing, China in 2000. He joined University of Southern California / Information Sciences Institute as a Research Associate in 2004 and became a Computer Scientist in 2006.  He received a B.S. degree in communication engineering and an M.S. degree in communication and information systems from the University of Electronic Science and Technology, China in 1997 and 2000, and a Ph.D. degree in computer science from the University of Nebraska-Lincoln in 2004. 

Journal Articles

Inder Monga, Chin Guok, John MacAuley, Alex Sim, Harvey Newman, Justas Balcas, Phil DeMar, Linda Winkler, Tom Lehman, Xi Yang, “Software-Defined Network for End-to-end Networked Science at the Exascale,” Journal of Future Generation Computer Systems, Volume 110, 2020, pp 181-201. (corresponding author)

Tom Lehman, Xi Yang, Nasir Ghani, Feng Gu, Chin Guok, Inder Monga, Brian Tierney, “Multilayer Networks: An Architecture Framework,” IEEE Communications Magazine, Volume 49, Issue 5, Pages: 122 - 130, May 2011.

Xi Yang, Lu Shen and B. Ramamurthy, “Survivable Lightpath Provisioning in WDM Mesh Networks under Shared Path Protection and Signal Quality Constraints,” IEEE/OSA Journal of Lightwave Technology, Vol. 23, No. 4, Apr. 2005.

Xi Yang and Byrav Ramamurthy, “Dynamic Routing in Translucent WDM Optical Networks: The Intra-Domain Case,” IEEE/OSA Journal of Lightwave Technology, Vol. 23, No. 3, Mar. 2005.

Lu Shen, Xi Yang, B. Ramamurthy, “Shared Risk Link Group (SRLG)-Diverse Path Provisioning Under Hybrid Service Level Agreements in Wavelength-Routed Optical Mesh Networks,” IEEE/ACM Transactions on Networking, Vol. 13, No. 4, August 2005.

Xi Yang and Byrav Ramamurthy, “Sparse Regeneration in Translucent Wavelength-Routed Optical Networks: Architecture, Network Design and Wavelength Routing,” Springer Journal of Photonic Network Communications. Vol. 10, No. 1, July 2005.

Xi Yang, “Availability-Differentiated Service Provisioning in Free-Space Optical Access Networks,” OSA Journal of Optical Networking, Vol. 4, No. 7, July 2005.

Xi Yang and Byrav Ramamurthy, “Inter-Domain Wavelength Routing in the Next-Generation Translucent Optical Internet Backbones,” OSA Journal of Optical Networking, Vol. 3, No. 3, Mar. 2004.

Lu Shen, Xi Yang and B. Ramamurthy, “Signaling Schemes for Dynamic Provisioning in Wavelength-routed Optical Mesh Networks,” Springer Journal of Photonic Network Communications, Vol. 8, No. 1, June 2004

 Select Conference Papers

Paul Ruth, Ilya Baldin, Komal Thareja, Tom Lehman, Xi Yang, Ezra Kissel, "FABRIC Network Service Model." IFIP Networking 2022.

Jonathan Guiang, Aashay Arora, Diego Davila, John Graham, Dima Mishin, Igor Sfiligoi, Frank Würthwein, Tom Lehman, Xi Yang, Chin Guok, Harvey Newman, Justas Balcas, Thomas Hutton, "Integrating End-to-End Exascale SDN into the LHC Data Distribution Cyberinfrastructure," PEARC 2022.

Frank Würthwein, Jonathan Guiang, Aashay Arora, Diego Davila, John Graham, Dima Mishin, Thomas Hutton, Igor Sfiligoi, Harvey Newman, Justas Balcas, Tom Lehman, Xi Yang, Chin Guok, "Managed Network Services for Exascale Data Movement Across Large Global Scientific Collaborations,"  4th Annual Workshop on Extreme-scale Experiment-in-the-Loop Computing (XLOOP), 2022.

Inder Monga etc. “SDN for End-to-End Networked Science at the Exascale (SENSE),” The 5th International Workshop on Innovating the Network for Data Intensive Science (INDIS) at Super Computing, Dallas, TX, November 11, 2018.

Xi Yang and Tom Lehman, “Model Driven Advanced Hybrid Cloud Services for Big Data: Paradigm and Practice,” The 7th International Workshop on Data-Intensive Computing in the Clouds at Super Computing, Salt Lake City, UT, November 14, 2016.

Wei Tang, Jonathan Jenkins, Folker Meyer, Robert Ross, Rajkumar Kettimuthu, Linda Winkler, Xi Yang, Thomas Lehman and Narayan Desai, “Data-Aware Resource Scheduling for Multicloud Workflows: A Fine-Grained Simulation Approach,” IEEE 6th International Conference on Cloud Computing Technology and Science (CloudCom), page 887-892, Singapore, December, 2014.

Aaron Brown, Jeff W. Boote, Tom Lehman, Xi Yang, “Enabling Large Scale Science using Inter- domain Circuits over OpenFlow,” Research SandBox, Super Computing, Seattle, November 2011.

Jason Zurawski, Eric Boyd, Tom Lehman, Shawn Mckee, Azher Mughal, Harvey Newman, Paul Sheldon, Steve Wolff and Xi Yang, “Scientific Data Movement enabled by the DYNES Instrument,” NDM at Super Computing 2011.

Xi Yang, Tom Lehman, Kenichi Ogaki, Munefumi Tsurusawa, “On M-Concurrency Path Computation and its Application in Dynamic Service Multi-Layer Networks,” The 14th Conference on Optical Network Design and Modeling, Kyoto, Japan, February 2010.

Xi Yang, Tom Lehman, Kenichi Ogaki and Tomohiro Otani, “A Study on Cross-Layer Multi-Constraint Path Computation for IP-over-Optical Networks,” IEEE ICC 2009.

Tom Lehman, Xi Yang, Chin P. Guok, Nageswara S. V. Rao, Andy Lake, John Vollbrecht, Nasir Ghani, Control Plane Architecture and Design Considerations for Multi-Service, Multi-Layer, Multi-Domain Hybrid Networks, IEEE INFOCOM Workshop on High Speed Networking, Anchorage, Alaska, May 2007.

Open Source Software 

SENSE Orchestration System, (Architect and Chief Developer. The software is being deployed for production on the global AutoGOLE/SENSE Testbed)

SENSE Realtime Monitoring System, (Architect and Lead of Development.)

FABRIC Testbed Control Framework (Lead for the Network Controller and key contributor to many other components.)

FABRIC Federation Software Suite  (Architect and Lead of Development.)

GENI Stitching Computation Service (GENI-SCS), (Architect and Chief Developer. The software was in active production service for the GENI community for 10 years.)

GENI Aggregate Manager (GENI-AM) for Dynamic Circuit Network, yang/GENI-DCN-AM (Architect and Chief Developer. The software was in production service as the Internet2 ION-AM, as well as an SDX GENI-AM for the Internet2 WIX.)

DRAGON Software Suite: (Architect and Chief Developer. The software had been deployed to world-wide network testbeds and production networks including MAX, Internet2 HOPI and ION, and USLHCNet.)

OSCARS Software Suite: (A Key Contributor.)