Institute of Mathematics and Informatics Bulgarian Academy of Sciences
Serdica Journal of Computing, Vol. 2, No 1, (2008), 45p-56p
This paper presents Quality of Service analyses in wired and
wireless IP networks based on the three popular techniques – RSVP, IntServ,
and DiffServ. The analyses are based on a quick approximation schema of
the traffic system with static and dynamic changes of the system bounds.
We offer a simulation approach where a typical leaky bucket model is ap-
proximated with a G/D/1/k traffic system with flexible bounds in waiting
time, loss and priority. The approach is applied for two cascaded leaky
buckets. The derived traffic system is programmed in C++. The simula-
tion model is flexible to the dynamic traffic changes and priorities. Student
criterion is applied in the simulation program to prove results. The results
of the simulation demonstrate the viability of the proposed solution and its
applicability for fast system reconfiguration in dynamic environmental circumstances. The simulated services cover a typical range of types of traffic
sources like VoIP, LAN emulation and transaction exchange.
This paper is sponsored by the Ministry of Education and Research of the Republic of
Bulgaria in the framework of project No 105 “Multimedia Packet Switching Networks Planning with Quality of Service and Traffic Management”.