Abstract
With the increase of Internet services and the intensive development of IP infrastructure, WIMAX technology is revolutionizing the broadband wireless world. This due to the low cost deployment, the high capacity and the large coverage. Quality of Service (QoS) is achieved through the use of five service classes (UGS, ertPS, rtPS, nrtPS, and BE), an Admission Control (AC) mechanism, a traffic policer and a traffic shaper. The AC, traffic policer and traffic shaper are not defined in the standard. We focus on the laster by proposing in this study a new traffic shaper that avoids low priority traffic while it keeping good QoS for high priorities traffic. We evaluate the proposed algorithm by a markov chain to show the benefits of the proposed shaping algorithm.
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