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以太无源光网络综合了PON技术和以太网技术的优点,以其高带宽、低成本、易使用、易升级的优良特性成为目前光接入网的优选方案。文中在IPACT算法的基础上提出了一种支持队列优先级的上行接入带宽分配算法,并构建了基于OPNET的系统仿真模型,评价了在信源到达为Pareto分布下该算法的性能。仿真表明该算法满足业务的QoS,提高了带宽的吞吐率,并保证了各业务队列带宽分配的公平性。
Ethernet passive optical network combines the advantages of PON technology and Ethernet technology, with its high bandwidth, low cost, easy to use, easy to upgrade the excellent features become the preferred optical access network solutions. Based on the IPACT algorithm, an uplink access bandwidth allocation algorithm supporting queuing priority is proposed and an OPNET-based system simulation model is constructed to evaluate the performance of the algorithm when the source arrival is Pareto distribution. The simulation results show that this algorithm can satisfy the QoS of the service, improve the throughput of the bandwidth, and ensure the fairness of bandwidth allocation of each service queue.