Title :
Estimation of token bucket parameters of VoIP traffic
Author :
Bruno, R. ; Garroppo, R.G. ; Giordano, S.
Author_Institution :
Dept. of Inf. Eng., Pisa Univ., Italy
Abstract :
We present a procedure to evaluate the parameters of the LEAP (linear bounded arrival processes) traffic characterisation when a stochastic model of considered traffic flow is available. The procedure, based on an equivalent queuing system, has been applied to a VoIP (voice over IP) scenario in a DiffServ (differentiated services) network architecture. In particular, we consider the characterisation of a traffic flow composed by the aggregation of telephone sources with VAD (voice activity detection), where each one has been modelled by a fluidic on-off process with exponentially distributed sojourn times in each state. For testing the goodness of our approach we have carried out discrete events simulations, which have highlighted the accuracy of the proposed procedure in the considered scenario
Keywords :
Internet telephony; discrete event simulation; packet switching; parameter estimation; queueing theory; stochastic processes; telecommunication traffic; token networks; transport protocols; voice communication; DiffServ network architecture; Internet; LEAP traffic characterisation; PCM codec; VAD; VoIP traffic; differentiated services; discrete events simulation; exponentially distributed sojourn times; fluidic on-off process; linear bounded arrival processes; packet voice sources; queuing system; stochastic model; telephone sources; token bucket parameters estimation; traffic flow; voice activity detection; voice over IP; voice traffic; Aggregates; Discrete event simulation; Filters; Internet telephony; Stochastic processes; Telecommunication traffic; Teleconferencing; Testing; Traffic control; Web and internet services;
Conference_Titel :
High Performance Switching and Routing, 2000. ATM 2000. Proceedings of the IEEE Conference on
Conference_Location :
Heidelberg
Print_ISBN :
0-7803-5884-8
DOI :
10.1109/HPSR.2000.856682
