Effects of traffic aggregation on quality of service parameters

Abstract

Differentiated Services (DiffServ) Architecture is based on aggregation of traffic as opposed to per flow traffic. When DiffServ is used in real time traffic environment it is important to study the effects of traffic aggregation on quality of service parameters. One-way delay and instantaneous packet delay variation (IPDV) are the most commonly used quality of service parameters for real time traffic. In this paper we study how one-way delay and IPDV are affected by traffic aggregation. We discover through our simulations and analytical models that IPDV increases with traffic aggregations while one-way delay is not affected purely due to aggregation. We used a priority queue scheduler for our simulation where the real time traffic was served with highest priority.