| Author | Musalim, Johan |
| Call Number | AIT Thesis no.TC-00-05 |
| Subject(s) | Asynchronous transfer mode
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of
Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. TC-00-05 |
| Abstract | Self-similar (or fractal) processes have been proposed as better models for certain
types of traffic (e.g., aggregate Ethernet LAN traffic, VBR video traffic, Internet traffic)
which will be transported in ATM networks. This model has very distinct statistical properties
when compared to traditional traffic models such as Poisson - based models, due to its longrange
dependence nature. However, there is still considerable debate about how to model such
processes and about their impact on network performance.
This thesis work studies the impact of multiplexing multiple self-similar traffic
together in ATM multiplexer with respect to cell loss rate. Here self-similar time series
generated using FGN and F-ARIMA methods are transformed using a set of mathematical
transformation techniques to model empirical aggregate Ethernet LAN traffic characteristics.
The synthetic traffic model is then used as input source traffic in the ATM simulation. The
simulations are conducted at several link utilization values ranging from low to very high link
utilization. Input traffic sources with different self-similarity parameter are used and the ATM
multiplexer buffer size is varied.
Simulation results show that, for correlated sources, self-similar traffic has
insignificant impact on cell loss ratio (CLR) when the link utilization is low(~ 30 %). For
medium link utilization, the results show that increasing buffer size could reduce the CLR,
with larger buffer size needed for sources with higher self-similarity parameter. However
when the link utilization is high, simulation results show that, for correlated sources, selfsimilar
traffic has serious impact on CLR. The results indicate that increasing buffer size is
not effective to reduce the CLR for high bursty traffic when the link utilization is high. |
| Year | 2000 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. TC-00-05 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Telecommunications (TC) |
| Chairperson(s) | Erke, Tapio ; |
| Examination Committee(s) | Ahmed, Kazi M.;Teerapat Sanguankotchakom; |
| Scholarship Donor(s) | Sonera, Finland; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2000 |