Teletraffic Engineering for the Internet – analytical approach

ITU CoE Workshop, Warsaw, Poland
24-25 November 2016

Course Description

The aim of the course is to introduce the participants to the idea of the possibility of modeling systems to which IP traffic is offered . In the first part of the course the basic notions associated with traffic engineering and modeling of network systems within the context of QoS parameters will be discussed. Models of traffic for IP systems will be also presented.

The second part of the course is devoted to modeling single-service systems. Therefore, the basic models of full-availability systems will be presented, including Erlang, Engset, Pascal and Hayword models. In this part, single-service queuing models M/M /N and M /G/ R PS, which are also proposed for modeling IP systems, will be considered.

The third part concerns modeling of multi-service systems that form the basis for modeling IP systems. In this section, a model of multi-service full-availability system will be presented. State-dependent multiservice systems to which a mixture of BPP (Bernoulli, Poisson and Pascal ) traffic streams is offered will be also considered.

The fourth part concerns modeling of multi-service IP systems in which offered traffic is subjected to different traffic shaping mechanisms. Therefore, models of systems with threshold compression and reservation mechanisms (adaptive traffic) and thresholdless compression (elastic traffic) will be analysed. A special attention will be paid to queuing models approximating the performance of real IP systems with finite buffers.

Target Population

The course is aimed at professionals working in the design, planning and network optimisation sector, traffic management officers, traffic engineers, operators planning to introduce new network services and network maintenance personnel.

Expected Outcomes

At the end of the training, the participant should have gained an understanding
of the key aspects of:

  • Network systems modeling – telecommunications traffic – QoS
  • Basics of single-service system modeling
  • Loss models: Erlag’s, Engset’s, Pascal’s and Hayword’s
  • Loss models and the Internet
  • Basics of multi-service system modeling
  • IP systems modeling
  • IP systems modeling

Course Content

  1. Network systems modeling – telecommunications traffic – QoS
    • traffic in telecommunications systems;
    • traffic theory and system modeling;
    • basic notions of traffic engineering (units, QoS parameters);
    • traffic parametrisation (packet level, call level, throughput diskretisation for the Internet).
  2. Basics of single-service system modeling

    • theoretical fundamentals of modeling of single-service systems (input stream, service stream, Markov processes.
    • Loss models: Erlag’s, Engset’s, Pascal’s and Hayword’s
    • Loss models and the Internet
  3. Basics of single-service queueing system modeling

    • Queing models: Erlang’s, M/G/R PS;
    • Queueing models and the Internet.
  4. Basics of multi-service system modeling

    • micro-state level;
    • Macro-state level;
    • Full-availability system model;
    • Generalised full-availability system model;
    • BPP traffic models.
  5. IP systems modeling

    • Stream of adaptive and elastic traffic;
    • models of systems with reservation;
    • models of threshold systems.
  6. IP systems modeling

    • Models of systems with thresholdless compression;
    • Models of systems with overflow traffic
    • Models of IP queueing systems


Prof. Maciej Stasiak

Maciej Stasiak received M.Sc. and Ph.D. degrees in electrical engineering from the Institute of Communications Engineering, Moscow, Russia, in 1979 and 1984, respectively. In 1996 he received D.Sc. degree from Poznan University of Technology in electrical engineering. In 2006 he was nominated as full professor.

Between 1983–92 he worked in Polish industry as a designer of electronic and microprocessor systems. In 1992, he joined Poznan University of Technology, where he is currently Head of the Chair of Communications and Computer Networks at the Faculty of Electronics and Telecommunications.

He is the author, and co-author, of more than 250 scientific papers and five books.

He is engaged in research and teaching in the area of performance analysis and modelling of queuing systems and multiservice IP networks. Since 2004 he has been also actively carrying out research on modelling and dimensioning cellular 2G/3G/4G networks.

Course Date (Duration)

24-25 November 2016 (2 days)

Venue of the Workshop

National Institute of Telecommunications (Instytut Łączności)
Szachowa str. 1, 04-894 Warsaw, Poland
Conference room 754

Participation fees

500 USD

Delivery Method

Face-to-face workshop. The course will be conducted as two full days lecture sessions. All participants will receive course materials in hard copy.


At the end of the course participants will take part in a written test checking the level of knowledge gained during the training.

Registration and Payments

STEP 1 – Login into ITU Academy

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STEP 2 – Registration into this course

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