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July  2009, 5(3): 541-552. doi: 10.3934/jimo.2009.5.541

Traffic modelling and bandwidth allocation algorithm for video telephony service traffic

Bong Joo Kim 1, , Gang Uk Hwang 1, and  Yeon Hwa Chung 2,

1. 

Department of Mathematical Sciences and Telecommunication Engineering Program, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, South Korea, South Korea
2. 

R&D Division, Corporate Customer Supporting BU, Business Group, KT, KT Daeduk 2 Center, Daejeon 305-811, South Korea

Received  August 2008 Revised  April 2009 Published  June 2009

In this paper, we analyze the stochastic characteristics of the measured video telephony service traffic and propose a mathematical model of the video telephony service traffic based on the analyzed stochastic characteristics. From our analysis, a voice traffic can be modelled by a renewal process with deterministic inter-arrival times and fixed packet size. On the other hand, a video traffic is modelled by an on and off source, where on and off periods are according to gamma distributions with respective parameters. Using the mathematical model, we estimate the required bandwidth to satisfy a given Quality of Service (QoS) requirement for the video telephony service traffic. To show the validity of our analysis, numerical studies with the NS-2 simulator are provided.
Keywords: QoS, bandwidth allocation, fluid flow analysis., Video telephony service traffic.
Mathematics Subject Classification: Primary: 90B22; Secondary: 90B15, 90B1.
Citation: Bong Joo Kim, Gang Uk Hwang, Yeon Hwa Chung. Traffic modelling and bandwidth allocation algorithm for video telephony service traffic. Journal of Industrial and Management Optimization, 2009, 5 (3) : 541-552. doi: 10.3934/jimo.2009.5.541
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