Xin Zhe Khooi

About Me

I am a PhD candidate in the School of Computing at the National University of Singapore (NUS), advised by Prof. Mun Choon Chan. Before my PhD studies, I was a Research Assistant at the NUS-Singtel Cybersecurity R&D Laboratory working closely with Dr. Levente Csikor, Dr. Dinil Mon Divakaran, Prof. Jialin Li and Prof. Min Suk Kang.

Prior to joining NUS, I did my undergraduate studies at the Faculty of Computer Science and Information Technology (FCSIT), University of Malaya, Malaysia, with my senior-year thesis advised by Prof. Teck Chaw Ling.

My CV can be downloaded here (Last Updated: June’24).

Research Interests

My research focuses on systems approaches for enhancing 5G/6G cellular networks. Additionally, I am broadly interested in data center networking, software-defined networking (SDN), and programmable data planes.

News

• [Apr 2025] I will be presenting a demo of SwapRAN at the OAI Workshop 2025.
• [Apr 2025] Puppis is accepted at ACM E-ENERGY’25.
• [Dec 2024] Joint work with Anuj Kalia, SwapRAN is accepted at ACM MOBICOM’25!
• [Oct 2024] JUNCTION is accepted at IEEE SECON’24.
• [Oct 2024] Collaborated work, DBench is accepted at 5G-MEMU’24.
• [Apr 2024] Joined the AI Networking Team at ByteDance, Singapore as an intern.
• [Oct 2023] Joint work with our ex-intern, Archit, is accepted at EuroP4’23!
• [Sep 2023] Emerged as 1st runner-up for the ACM SRC at SIGCOMM!
• [Jul 2023] One poster accepted at ACM SIGCOMM’23 Posters and Demos!
• [May 2023] Three collaborated works are accepted at ACM SIGCOMM’23!

Recent Publications

• How to Update Your 5G vRAN
  Xin Zhe Khooi*, Anuj Kalia*, Mun Choon Chan
  ACM MOBICOM’25. (To appear)
  [Paper] [Code]
  *Joint first-author.

• Revisiting CPU Performance Scaling for Energy-Efficient Packet Processing Applications
  Biqing Qiu, Yixi Chen, Xin Zhe Khooi, Cha Hwan Song, Mun Choon Chan
  ACM E-ENERGY’25
  [Paper] [Code]
  

• JUNCTION: A Scalable Multi-access Solution using Programmable Switches
  Xin Zhe Khooi, Cha Hwan Song, Satis Kumar Permal, Nishant Budhdev, Levente Csikor, Raj Joshi, Mun Choon Chan
  IEEE SECON’24.
  [Paper] [Code]
  

• Towards Continuous Latency Monitoring through Open RAN Interfaces
  Satis Kumar Permal, Yixi Chen, Xin Zhe Khooi, Biqing Qiu, Mun Choon Chan
  5G-MEMU’24.
  [Paper] [Code]
  

• P4EAD: Securing the In-band Control Channels on Commodity Programmable Switches
  Archit Bhatnagar*, Xin Zhe Khooi*, Cha Hwan Song, Mun Choon Chan
  EuroP4’23.
  [Paper] [Code]
  *Joint first-author.

• Poster: Towards Accelerating the 5G Centralized Unit with Programmable Switches
  Xin Zhe Khooi, Archit Bhatnagar, Satis Kumar Permal, Nishant Budhdev, Cha Hwan Song, Mun Choon Chan
  ACM SIGCOMM’23.
  [Paper] [Poster]

• Network Load Balancing with In-network Reordering Support for RDMA
  Cha Hwan Song, Xin Zhe Khooi, Raj Joshi, Inho Choi, Jialin Li, Mun Choon Chan
  ACM SIGCOMM’23.
  [Paper] [Code]

• NeoBFT: Accelerating Byzantine Fault Tolerance Using Authenticated In-Network Ordering
  Guangda Sun, Mingliang Jiang, Xin Zhe Khooi, Yunfan Li, Jialin Li
  ACM SIGCOMM’23.
  [Paper] [Code]

• Masking Corruption Packet Losses in Datacenter Networks with Link-local Retransmission
  Raj Joshi, Cha Hwan Song, Xin Zhe Khooi, Nishant Budhdev, Ayush Mishra, Mun Choon Chan, Ben Leong
  ACM SIGCOMM’23.
  [Paper] [Code]

• DySO: Enhancing Application Offload Efficiency on Programmable Switches
  Cha Hwan Song, Xin Zhe Khooi, Dinil Mon Divakaran, Mun Choon Chan
  Elsevier Computer Networks.
  [Paper] [Code]

• Revisiting Application Offloads on Programmable Switches
  Cha Hwan Song, Xin Zhe Khooi, Dinil Mon Divakaran, Mun Choon Chan
  IFIP Networking’22.
  [Paper] [Code]

• Towards a Framework for One-sided RDMA Multicast
  Xin Zhe Khooi, Cha Hwan Song, Mun Choon Chan
  ACM/IEEE ANCS’21. EuroP4’21.
  [Paper] [Video] [Code]

• Revisiting Heavy-Hitter Detection on Commodity Programmable Switches
  Xin Zhe Khooi, Levente Csikor, Jialin Li, Min Suk Kang, Dinil Mon Divakaran
  IEEE NetSoft’21.
  [Paper] [Video] [Code]

• In-Network Applications: Beyond Single Switch Pipelines
  Xin Zhe Khooi, Levente Csikor, Jialin Li, Dinil Mon Divakaran
  IEEE NetSoft’21. TaPoPF’21.
  [Paper] [Video]

• In-Network Defense Against AR-DDoS Attacks
  Xin Zhe Khooi, Levente Csikor, Min Suk Kang, Dinil Mon Divakaran
  ACM SIGCOMM’20 Poster and Demo Sessions.
  [Paper] [Poster] [Demo Pt. I] [Demo Pt. II] [Code]

• Towards In-Network Time-Decaying Aggregates for Heavy-Hitter Detection
  Xin Zhe Khooi, Levente Csikor, Min Suk Kang, Dinil Mon Divakaran
  ACM SIGCOMM’20 Poster and Demo Sessions.
  [Paper] [Poster]

• DIDA: Distributed In-Network Defense Architecture Against Amplified Reflection DDoS Attacks
  Xin Zhe Khooi, Levente Csikor, Dinil Mon Divakaran, Min Suk Kang
  IEEE NetSoft’20.
  [Paper] [Video] [Code - BMv2] [Code - Tofino]

Teaching

• [Fall’23] CS5229 Advanced Computer Networks (w/ Mun Choon Chan)

• [Winter’23] CS2105 Introduction to Computer Networks (w/ Richard Ma and Jithin Vachery)

• [Fall’22] CS3103 Computer Networks Practice (w/ Mun Choon Chan)

• [Winter’22] CS4222 Wireless Networking (w/ Mun Choon Chan)

• [Fall’21] CS3103 Computer Networks Practice (w/ Mun Choon Chan)

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