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Resource dimensioning aspect of heterogeneous traffic with different service requirements: Integration versus segregation

In this paper, we consider the ATM networks in which the virtual path concept is implemented. The question of how to multiplex two or more diverse traffic classes while providing different quality of service requirements is a very complicated open problem. Two distinct options are available: integration and segregation. In an integration approach all the traffic from different connections are multiplexed onto one VP. This implies that the most restrictive QOS requirements must be applied to all services. Therefore, link utilization will be decreased because unnecessarily stringent QOS is provided to all connections. With the segregation approach the problem can be much simplified if different types of traffic are separated by assigning a VP with dedicated resources (buffers and links). Therefore, resources may not be efficiently utilized because no sharing of bandwidth can take place across the VP. The probability that the bandwidth required by the accepted connections exceeds the capacity of the link is evaluated with the probability of congestion (PC). Since the PC can be expressed as the CLP, we shall simply carry out bandwidth allocation using the PC. We first focus on the influence of some parameters (CLP, bit rate and burstiness) on the capacity required by a VP supporting a single traffic class using the new convolution approach. Numerical results are presented both to compare the required capacity and to observe which conditions under each approach are preferred

© IEE Performance Engineering in Telecommunications Networks. Twelfth UK Teletraffic Symposium, 1995, núm. 1995/054, p. 6/1-6/10

IEEE

Autor: Fabregat Gesa, Ramon
Marzo i Lázaro, Josep Lluís
Ridao Rodríguez, Pere
Data: 1995
Resum: In this paper, we consider the ATM networks in which the virtual path concept is implemented. The question of how to multiplex two or more diverse traffic classes while providing different quality of service requirements is a very complicated open problem. Two distinct options are available: integration and segregation. In an integration approach all the traffic from different connections are multiplexed onto one VP. This implies that the most restrictive QOS requirements must be applied to all services. Therefore, link utilization will be decreased because unnecessarily stringent QOS is provided to all connections. With the segregation approach the problem can be much simplified if different types of traffic are separated by assigning a VP with dedicated resources (buffers and links). Therefore, resources may not be efficiently utilized because no sharing of bandwidth can take place across the VP. The probability that the bandwidth required by the accepted connections exceeds the capacity of the link is evaluated with the probability of congestion (PC). Since the PC can be expressed as the CLP, we shall simply carry out bandwidth allocation using the PC. We first focus on the influence of some parameters (CLP, bit rate and burstiness) on the capacity required by a VP supporting a single traffic class using the new convolution approach. Numerical results are presented both to compare the required capacity and to observe which conditions under each approach are preferred
Format: application/pdf
Cita: Fabregat Gesa, R., Marzo i Lázaro, J.L., i Ridao Rodríguez, P. (1995). Resource dimensioning aspect of heterogeneous traffic with different service requirements: Integration versus segregation. IEE Performance Engineering in Telecommunications Networks. Twelfth UK Teletraffic Symposium, 1995/054, 6/1 - 6/10. Recuperat 07 maig 2010, a http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=676641
Accés al document: http://hdl.handle.net/10256/2228
Llenguatge: eng
Editor: IEEE
Col·lecció: Articles publicats (D-ATC)
És part de: © IEE Performance Engineering in Telecommunications Networks. Twelfth UK Teletraffic Symposium, 1995, núm. 1995/054, p. 6/1-6/10
Drets: Tots els drets reservats
Matèria: Mode de transferència asíncrona
Telecomunicació de banda ampla, Sistemes de
Telecomunicació -- Tràfic
Asynchronous transfer mode
Broadband communication systems
Telecommunication -- Traffic
Títol: Resource dimensioning aspect of heterogeneous traffic with different service requirements: Integration versus segregation
Tipus: info:eu-repo/semantics/article
Repositori: DUGiDocs

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