Selected Research Projects
National key R&D programs and industry-university joint grants across 8+ long-term partnerships, producing conference papers, a best paper award, and national deliverables. Most engagements involve ByteDance production systems and are confidential.
- Multimodal Network End-to-End Transmission Protocol and Congestion Control — National Key R&D Program of China. 2022–2025. Total Funding: 3,000,000 RMB. Industry-side technical lead, responsible for industrial scenario verification and engineering implementation. Collaborated with Beijing University of Posts and Telecommunications (BUPT) and Xi’an Jiaotong University.
Industry Mentorship & Service
Supervise 15+ graduate students and visiting interns on thesis research, industrial practice, and career development; teach selected postgraduate seminar sessions. Alumni include first authors of SIGCOMM/NSDI papers, researchers at Microsoft Research Asia, and engineers at global technology companies.
School of Computer Science, Beijing University of Posts and Telecommunications (BUPT) — Industry Mentor, Professional Master’s Program — 2026–
School of Computer Science, Fudan University — Industry Mentor, Professional Master’s Program — 2024–
Selected Academic Articles
† corresponding author · ‡ PI and first-author advisor at ByteDance.
Horizon: A Hyper-Edge Observability Engine for Live Streaming Networks — Liu, Ziqian; Ding, Daqian; Han, Rui†; Xie, Zhendong; Xu, Aifang; Wang, Changqian; Liu, Kefei; Li, Jialin; Xiao, Yunming; Cui, Heming; Qiu, Yiming. SIGCOMM ‘26
HyperEdge: An Edge CDN Infrastructure for Cost-Efficient Video Streaming — Wei, Dehui; Li, Haozhe; Han, Rui‡; Zhang, Jiao; Yan, Ma; Pang, Xiaofei; Peng, Yajie; Xue, Zhichen; Li, Jialin. Best Paper Award. NSDI ‘26 PDF
Skyline: A Cloud Centric Internet Monitoring Engine — Guo, Shixian; Liu, Ziqian; Bai, Yangyang; Chen, Yuan; Zhang, Qi; Lv, Yang; Hu, Jianwei; Li, Gen; Liu, Songlin; Zhong, Zhenyang; Wen, Sisi; Dong, Yongbin; Luo, Feng; Chen, Anjian; Han, Rui; Li, Hang; Xu, Shuai; Huang, Yibo; Liu, Kefei; Qiu, Yiming. NSDI ‘26
RLive: Robust Delivery System for Scaling Live Streaming Services — Tian, Yu; Lv, Gerui; Wu, Qinghua; Fang, Ruili; Peng, Yajie; Xue, Zhichen; Han, Rui‡; Lin, Chuanqing; Pang, Xiaofei; Liu, Jingxing; Li, Zhenyu. EuroSys ‘26
HELDR: Packet Loss Detection and Retransmission for Live Streaming Hyper-Edge Network — Guo, Peisheng; Zhang, Jiao; Wang, Yuqing; Li, Haozhe; Xue, Zhichen; Peng, Yajie; Han, Rui‡; Pang, Xiaofei; Huang, Tao; Fang, Ruili; Zhu, Zhenpeng; Chen, Weiqi; Wei, Dehui. IWQoS ‘25
PScheduler: QoE-Enhanced Multipath Scheduler for Video Services in Large-Scale Peer-to-Peer CDNs — Wei, Dehui; Zhang, Jiao; Li, Haozhe; Xue, Zhichen; Peng, Yajie; Pang, Xiaofei; Liu, Yuanjie; Han, Rui‡; Li, Jialin. INFOCOM ‘24 PDF
Multipath Smart Preloading Algorithms in Short-Video Peer-to-Peer CDN Transmission Architecture — Wei, Dehui; Zhang, Jiao; Li, Haozhe; Xue, Zhichen; Peng, Yajie; Han, Rui‡. IEEE Network ‘24 PDF
Technical Standards
Core drafter representing ByteDance/Volcano Engine.
Technical Requirements for Video Bitrate Adaptation Based on Transport Layer Information — Beijing Volcano Engine Technology Co., Ltd, BUPT. CCSA Industry Standard Draft, 2025. Core Drafter.
Technical Requirements for Video Bitrate Adaptation Based on Transport Layer Information — Beijing Volcano Engine Technology Co., Ltd, BUPT. CCSA Industry Standard Draft, 2025.
Technical Requirements for Transport Information Feedback of Streaming Media Applications in Wireless LANs — Beijing Volcano Engine Technology Co., Ltd, BUPT, China Academy of Information and Communications Technology, ZTE Corporation, China United Network Communications Group Co., Ltd. CCSA Industry Standard Draft, 2025.
Technical Requirements for Packet Scheduling in Multipath Network Transmission — Beijing Volcano Engine Technology Co., Ltd, BUPT. CCSA Group Standard Draft, 2025.
Technical Requirements for NAT Device Type Detection over UDP — Beijing Volcano Engine Technology Co., Ltd, BUPT. CCSA Group Standard Draft, 2025.
Selected Patents
Hold 17+ granted and pending invention patents across CN and US jurisdictions.
- A Data Scheduling Method, Device, Electronic Equipment, and Storage Medium — Peng, Yajie; Li, Haozhe; Wei, Dehui; Han, Rui; Xue, Zhichen; Zhang, Jiao. CN118828101B
- Multi-Source Packet Retransmission Algorithm for Live Streaming Scenarios — Li, Haozhe; Guo, Peisheng; Xue, Zhichen; Peng, Yajie; Pang, Xiaofei; Han, Rui; Fang, Ruili; Zhang, Jiao. CN121907412A
- An Edge Server Access Bandwidth Estimation Algorithm for Live Streaming — Li, Haozhe; Peng, Yajie; Pang, Xiaofei; Han, Rui; Fang, Ruili; Xue, Zhichen; Guo, Peisheng; Zhang, Jiao; Liu, Yuanjie. CN121814690A
- A Method and Architecture for Live Streaming CDN Capacity Scaling — Fang, Ruili; Tian, Yu; Peng, Yajie; Han, Rui; Pang, Xiaofei. CN120980076A
- A Method and System for Cross-Border, Ultra-Low Latency Communication in In-Browser Video Classrooms — Han, Rui. CN 201710596812.0
Selected Invited Talks
SIGCOMM Reading Group: HyperEdge — ACM SIGCOMM–CCF Internet Committee Reading Group (Session 32), Xiamen University. June 2026. Invited discussant for the NSDI ‘26 Best Paper Award paper HyperEdge: An Edge CDN Infrastructure for Cost-Efficient Video Streaming. Video (Bilibili)
Hyperscale Multimedia Network Observability and Capacity Evaluation — China Academy of Information and Communications Technology (CAICT) Network Intelligent Sensing Symposium. Dec 2025. Shared ByteDance’s engineering practices for network observability and capacity evaluation; the work received the “Starbeam” Forward-Looking Innovation Application Award. News · News
Re-exploring Cost Optimization in Edge Multimedia Networks — LiveVideoStackCon ‘23. Nov 2023. Shared measurement and experimentation methodologies for cost optimization across large-scale edge infrastructure. Video (YouTube) · Video (Bilibili) · Slides
Soft Skills for Computer Engineers — Tongji University, Career Navigation Series. Mar 2024. Spoke to freshmen about career development strategies and emerging trends in information technology. News · Slides
Global Opportunities for Real-Time Video Networks — Zhongguancun Innovation Street. Mar 2018. Joined a panel with Eric Migicovsky (Y Combinator Partner, former Pebble CEO) to discuss the technical and market opportunities for global real-time communication networks.
Book Translation
- The Engineering Executive’s Primer (Chinese Edition) — Translated by Ray Han. (Original title: The Engineering Executive’s Primer: Impactful Technical Leadership, by Will Larson, published by O’Reilly in 2024). Forthcoming, Posts & Telecom Press, Late 2026. O’Reilly