Translator Disclaimer
2010 Statistical analysis and modeling of Internet VoIP traffic for network engineering
Bowei Xi, Hui Chen, William S. Cleveland, Thomas Telkamp
Electron. J. Statist. 4(none): 58-116 (2010). DOI: 10.1214/09-EJS473


Network engineering for quality-of-service (QoS) of Internet voice communication (VoIP) can benefit substantially from simulation study of the VoIP packet traffic on a network of routers. This requires accurate statistical models for the packet arrivals to the network from a gateway. The arrival point process is the superposition, or statistical multiplexing, of the arrival processes of packets of individual calls. The packets of each call form a transient point process with on-intervals of transmission and off-intervals of silence. This article presents the development and validation of models for the multiplexed process based on statistical analyses of VoIP traffic from the Global Crossing (GBLX) international network: 48 hr of VoIP arrival times and headers of 1.315 billion packets from 332018 calls. Statistical models and methods involve point processes and their superposition; time series autocorrelations and power spectra; long-range dependence; random effects and hierarchical modeling; bootstrapping; robust estimation; modeling independence and identical distribution; and visualization methods for model building. The result is two models validated by the analyses that can generate accurate synthetic multiplexed packet traffic. One is a semi-empirical model: empirical data are a part of the model. The second is a mathematical model: the components are parametric statistical models. This is the first comprehensive modeling of VoIP traffic based on data from a service provider carrying a full range of VoIP applications. The models can be used for simulation of any IP network architecture, wireline or wireless, because the modeling is for the IP-inbound traffic to an IP network. This is achieved because the GBLX data, collected on an IP link, are very close to their properties when they entered the GBLX network.


Download Citation

Bowei Xi. Hui Chen. William S. Cleveland. Thomas Telkamp. "Statistical analysis and modeling of Internet VoIP traffic for network engineering." Electron. J. Statist. 4 58 - 116, 2010.


Published: 2010
First available in Project Euclid: 29 January 2010

zbMATH: 1329.62480
MathSciNet: MR2645478
Digital Object Identifier: 10.1214/09-EJS473

Primary: 62-07, 62P30
Secondary: 62M10, 62M15

Rights: Copyright © 2010 The Institute of Mathematical Statistics and the Bernoulli Society


Back to Top