William Sentosa

William Sentosa

PhD candidate at UIUC

William Sentosa

About me

I am a PhD candidate in Computer Science at the University of Illinois Urbana-Champaign (UIUC), advised by Prof. Brighten Godfrey. Before joining UIUC, I worked with Prof. Shan Lu and Prof. Henry Hoffmann from UChicago to build an auto-configuration framework for systems software. I earned a BS degree in Computer Science from Bandung Institute of Technology, Indonesia, in 2017.

My research interests span broadly in the area of networked systems, including (but not limited to) low-latency networking, cellular networks, wide-area networks, ML Sys, Sys for ML, and VR/AR systems.

Note: I am on the job market for 2025, looking for a research lab or research engineering position.

I enjoy building systems, and these are three topics that I have been working on:

  • Low latency networking
    • DChannel provides a network-layer multipath solution that utilizes network slices in 5G (eMBB and URLLC) to achieve low latency and high bandwidth (NSDI’23, HotMobile’21)
    • HVC explores the challenges and opportunities of using emerging differentiated services across multiple networking layers. (HotNets’23)
    • WTSN achieves low latency in WiFi by using TSN through a multipath design (HotMobile’25)
    • cISP proposes a design of wide-area networks that move data at near light speed in a vacuum (NSDI’22)
  • Network emulation for network protocol evaluation
    • CellReplay is an accurate record-and-replay emulator for cellular networks (NSDI’25)
  • Offloading VR/AR components to the cloud
    • RemoteVIO offloads head tracking to a remote server (MMSys’25)
    • OpenWarp improves the cloud rendering experience through a mesh-based reprojection technique (MMSys’25)

Publications

CellReplay: Towards accurate record-and-replay for cellular networks
William Sentosa, Balakrishnan Chandrasekaran, P. Brighten Godfrey, and Haitham Hassanieh.
To appear at 22nd USENIX Symposium on Networked Systems Design and Implementation (USENIX NSDI’25)

DChannel: Accelerating Mobile Applications With Parallel High-bandwidth and Low-latency Channels
William Sentosa, Balakrishnan Chandrasekaran, P. Brighten Godfrey, Haitham Hassanieh, and Bruce Maggs.
In 20th USENIX Symposium on Networked Systems Design and Implementation (USENIX NSDI’23)

Accelerating Mobile Applications With Parallel High-bandwidth and Low-latency Channels
William Sentosa, Balakrishnan Chandrasekaran, P. Brighten Godfrey, Haitham Hassanieh, Bruce Maggs, and Ankit Singla.
In 22nd International Workshop on Mobile Computing Systems and Applications (ACM HotMobile’21)

RemoteVIO: Offloading Head Tracking in an End-to-End XR System
Qinjun Jiang, Yihan Pang, William Sentosa, Steven Gao, Muhammad Huzaifa, Jeffrey Zhang, Javier Perez-Ramirez, Dibakar Das, Dave Cavalcanti, P. Brighten Godfrey, and Sarita Adve.
In 16th ACM Multimedia Systems Conference (ACM MMsys’25)

XRgo: Design and Evaluation of Rendering Offload for Low-Power Extended Reality Devices
Steven Gao, Jeffrey Liu, Qinjun Jiang, Finn Sinclair, William Sentosa, P. Brighten Godfrey, and Sarita Adve.
In 16th ACM Multimedia Systems Conference (ACM MMsys’25)

Is WTSN the missing piece for low latency in general-purpose Wi-Fi?
Milind Kumar Vaddiraju, William Sentosa, Qinjun Jiang, Sarita Adve, Dave Cavalcanti, Dibakar Das, P. Brighten Godfrey, Javier Perez-Ramirez, and Deepak Vasisht.
In 26th International Workshop on Mobile Computing Systems and Applications (ACM HotMobile’25)

Boosting Application Performance using Heterogeneous Virtual Channels: Challenges and Opportunities
Talal Touseef, William Sentosa, Milind Kumar Vaddiraju, Debopam Bhattacherjee, Bala Chandrasekaran, P. Brighten Godfrey, and Shubham Tiwari.
In Twenty-second ACM Workshop on Hot Topics in Networks (ACM HotNets’23)

cISP: A Speed-of-Light Internet Service Provider
Debopam Bhattacherjee, Waqar Aqeel, Sangeetha Abdu Jyothi, Ilker Nadi Bozkurt, William Sentosa, Muhammad Tirmazi, Anthony Aguirre, Balakrishnan Chandrasekaran, P. Brighten Godfrey, Gregory Laughlin, Bruce Maggs, and Ankit Singla.
In 19th USENIX Symposium on Networked Systems Design and Implementation (USENIX NSDI’22)

Understanding and Auto-Adjusting Performance-Sensitive Configurations
Shu Wang, Chi Li, Henry Hoffmann, Shan Lu, William Sentosa, and Achmad Imam Kistijantoro.
In 23rd International Conference on Architectural Support for Programming Languages and Operating Systems (ACM ASPLOS’18)