MHPP: A new Dynamic Bandwidth Allocation in Ethernet Passive Optical Networks

In an Ethernet Passive Optical Network (EPON) a variety of applications with different Quality of Services (QoS) should be transmitted. Therefore, an EPON network must provide a differentiated QoS for different applications in such a way that the utilization of upstream channel should not go down. In this paper, we shall propose a new Dynamic Bandwidth Allocation (DBA) called MHPP (Maximum High Priority Proportion) to reduce packet loss rate and packet delay for high priority traffic. MHPP first grants those Optical Network Units (ONUs) that have more high priority traffic in their granted bits. Hence, the order of ONUs is changed in every transmission cycle based on the proportion of high priority data to granted bits. Our performance evaluations show that the MHPP algorithm can significantly reduce packet delay and packet loss for high priority traffic.