A share-controlled packet fair queueing algorithm for IntServ EPON

A share-controlled PFQ algorithm is proposed for IntServ EPON. It divides packet scheduling into high-priority phase and low-priority phase. In the high-priority phase, an improved PFQ algorithm is presented, which introduces a new constraint and a control factor into the scheduling discipline to overcome bandwidth preemption and to freely distribute excess bandwidth. Computer simulation results show that both the reserved services and non-reserved service can obtain excellent QoS performance when scheduled with the proposed algorithm.