Modified of polling mechanism with threshold and precondition for market activation in Ethernet PON

In this paper, propose and analysis a multiple access mechanism based on a polling scheme that is appropriate for Ethernet passive optical networks. We also suggested a threshold that limits upstream data sizes for avoidance of starvation problem. We assume three kinds of traffic patterns, for realistic simulation results, which are constant bit rate traffic, Poisson arrival traffic, and burst traffic, respectively, using OPNET. We then analyzed the proposed schemes´ performances. A precondition for market activation is also given. The analysis shows that our proposal is simple and can extend the limitation of the distance.