Traffic Analysis and Simulation of a Prioritized Shared Medium

Jeffrey J. Evans, Cynthia S. Hood, Phillip M. Dickens
2003 Simulation (San Diego, Calif.)  
This work studies the delay effects resulting from heterogeneous traffic types competing for communications resources on a prioritized shared medium using a fixed access and admission control scheme. This research focuses on a specific class of Hybrid Fiber Coaxial (HFC) residential Internet access system. Such systems have three separate traffic classes: voice, modem, and high-speed data. We use analysis, modeling and simulation, to understand how the combination of these three traffic
more » ... all competing for finite and prioritized bandwidth resources, impacts the "perceived" quality of service (QoS) by the end user. We develop analytic models for the various traffic types being considered, and validate the individual models using simulation. We then conduct simulation studies addressing the impact of the combination of these three data sources all vying for the limited bandwidth resources under varying source and offered load conditions. We show that traditional modeling techniques are not able to effectively capture the behavior of such real-world systems, and demonstrate that our techniques are quite useful for gaining insight into the behavior and performance of these systems.
doi:10.1177/0037599703038879 fatcat:gaiso3mx6rb73lhpjubn4hwwui