Analysis of a generic model for a bottleneck link in an integrated services communications network

Remco Litjens*, Richard J. Boucherie

*Corresponding author for this work

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Abstract

We develop and analyse a generic model for performance evaluation, parameter optimisation and dimensioning of a bottleneck link in an integrated services communications network. Possible application areas include ip, atm and gsm/gprs networks. The model enables analytical evaluation for a scenario of integrated speech, video and data services, selected for the fundamental differences in their service characteristics. While a speech call is assigned a single resource unit for its entire duration, both video and data calls can handle varying resource assignments. The principal distinction between these elastic call types, is that in case of video calls, a more generous resource assignment implies a better throughput and thus video quality, while for data calls the increased throughput implies a reduced transfer time. Markov chain analysis is applied to derive basic performance measures such as the expected resource utilization, service-specific blocking probabilities and the expected video and data qos. Furthermore, analytical expressions are derived for the expected video and data qos, conditional on the call duration or file size, respectively, and on the system state on arrival. As a potential application, these measures can be fed back to the caller as an indication of the expected qos. A numerical study, focussing on a wireless access network, is included to demonstrate the merit of the presented generic model and performance analysis.

Original languageEnglish
Title of host publicationProceedings of ASMTA 2007
Subtitle of host publication14th International Conference on Analytical and Stochastic Modelling Techniques and Applications
EditorsKhalid Al-Begain
Pages89-96
Number of pages8
Publication statusPublished - 1 Dec 2007
Event14th International Conference on Analytical and Stochastic Modelling Techniques and Applications, ASMTA 2007 - Prague, Czech Republic
Duration: 4 Jun 20076 Jun 2007
Conference number: 14

Conference

Conference14th International Conference on Analytical and Stochastic Modelling Techniques and Applications, ASMTA 2007
Abbreviated titleASMTA 2007
CountryCzech Republic
CityPrague
Period4/06/076/06/07

Keywords

  • Communication systems and networks
  • Markov models
  • Performance modelling
  • Stochastic models
  • Wireless and mobile systems and networks

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    Litjens, R., & Boucherie, R. J. (2007). Analysis of a generic model for a bottleneck link in an integrated services communications network. In K. Al-Begain (Ed.), Proceedings of ASMTA 2007: 14th International Conference on Analytical and Stochastic Modelling Techniques and Applications (pp. 89-96)