Wireless innovations Next-generation
Online Workshop (WiNOW)
3-6 November, 2025 // Virtual
Yu Chen
Beijing University of Posts and Telecommunications
Yu Chen (Member, IEEE) received the B.Eng. degree in electronic science and technology from the Beijing University of Posts and Telecommunications (BUPT), Beijing, China, in 2006, and the M.Sc. and Ph.D. degrees from the Communications and Information Systems Group, University College London, London, U.K., in 2007 and 2013, respectively. Since 2015, he has been with the School of the Information and Communication Engineering, BUPT, where he is currently a Lecturer. His general research interests include fluid antenna systems, fast discrete-event simulation, end-to-end latency analysis and quality-of-service provisioning algorithm design, and cross-layer energy efficiency analysis.
Talk Title: Network Delay Model in Computer Networks And Fast Simulation
End-to-end (E2E) delay is a key quality-of-service (QoS) metric in computer networks. Traditional queueing models based on Kleinrock’s Independence Assumption (KIA) simplify analysis but ignore the inherent correlation between packet arrivals and service times. This work develops a Network Delay Model without KIA, reformulating delay propagation through the Lindley equation and introducing a new Special Phase-Type (SPH) distribution for tractable yet realistic analysis. To accelerate evaluation, we design a self-developed fast discrete-event simulation platform — Queue Solver, which implements Lindley-type recursion for multi-hop queueing networks. Queue Solver achieves a significant speedup compared with OMNET++. This unified framework bridges analytical modeling and efficient simulation, offering a practical tool for QoS-aware design and large-scale network performance evaluation.