Modeling End-to-End Packet Delay Dynamics of the Internet using System Identification
نویسندگان
چکیده
Understanding the end-to-end packet delay dynamics of the Internet is of crucial importance since (1) it directly affects the QoS (Quality of Services) of realtime applications, and (2) it enables us to design an efficient congestion control mechanism for both realtime and nonrealtime applications. In this paper, we propose a novel approach for modeling the end-to-end packet delay dynamics of the Internet. The key idea of our approach is treating the network, seen by specific source and destination hosts, as a black-box, and modeling the end-to-end packet delay dynamics using system identification, having been throughly used in the field of control engineering. The end-to-end packet delay dynamics is modeled as a SISO (Single-Input and Single-Output) system. The input to the system is a packet inter-departure time from the source host, and the output from the system is an endto-end packet delay variation measured by the destination host. In this paper, the ARX (Auto-Regressive eXogenous) model is used and its coefficients are determined using system identification. Several topics such as model validation and selection of the orders of the ARX model are also discussed. We show that the ARX model accurately captures the end-to-end packet delay dynamics if the orders of the ARX model is appropriately chosen. We also show that the effect of other UDP and TCP traffic can be modeled by white noise by using the end-to-end packet delay variation. Key Topics: Traffic Modeling and Measurements and Simulation methods
منابع مشابه
On Measuring the End-to-End Packet Delay and its Dynamics Modeling using System Identification
Understanding the end-to-end packet delay dynamics of the Internet is of crucial importance since it directly affects the QoS (Quality of Services) of realtime services, and it enables us to design an efficient congestion control mechanism. In this paper, we measure the end-to-end packet delay of the Internet, and build a model representing its dynamics using the system identification. We first...
متن کاملOn Modeling Round-Trip Time Dynamics of the Internet Using System Identification
Understanding the end-to-end packet delay dynamics of the Internet is of crucial importance since it directly affects the QoS (Quality of Services) of realtime services, and it enables us to design an efficient congestion control mechanism. In this paper, we measure the round-trip time, and build a mathematical model representing its dynamics using system identification. We first measure, as th...
متن کاملAn Application of System Identification to Modeling End-to-End Packet Delay Dynamics of the Internet
متن کامل
Master’s Thesis Title Studies on Modeling Packet Delay Dynamics of the Internet using System Identification and its Application for Designing a Rate-Based Congestion Control Mechanism
Understanding the end-to-end packet delay dynamics of the Internet is of crucial importance since it directly affects the QoS (Quality of Services) of realtime services, and it enables us to design an efficient congestion control mechanism. In this thesis, we measure the round-trip time in the actual operating Internet, and build a mathematical model representing its dynamics using system ident...
متن کاملMeasurement-Based Modeling of Internet Round-Trip Time Dynamics Using System Identification
Understanding the end-to-end packet delay dynamics of the Internet is of crucial importance since it directly affects the QoS (Quality of Services) of various applications, and it enables us to design an efficient congestion control mechanism. In our previous studies, we have measured round-trip time of the Internet, and have modeled its dynamics by the ARX (Auto-Regressive eXogenous) model usi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2000