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A novel dynamic bandwidth allocation scheme towards improving the performance of XG-PON system
Optical Switching and Networking ( IF 1.9 ) Pub Date : 2022-09-13 , DOI: 10.1016/j.osn.2022.100715
Garima , Vivekanand Jha , Rakesh Kumar Singh

Time division multiplexed passive optical networks (TDM-PONs) such as EPON, XG-PON, XGS-PON, etc. have become widely accepted network architectures for meeting the bandwidth requirement of high-end consumer applications. The available bandwidth is still limited and needs to be utilized efficiently. There are scenarios when one ONU may completely dominate the network bandwidth leading to starvation of another ONUs. This may happen for an ONU in every allocation cycle. This enforces the OLT to provide such a fair allocation scheme that would provide a chance to different ONUs during polling and scheduling mechanism. This paper presents two novel DBA schemes namely the analytic hierarchy process proportional allocation scheme (AHP-PAS) and weighted sum model proportional allocation scheme (WSM-PAS) to determine the order of a transmission container (T-CONT) of an ONU for polling and scheduling. The proposed schemes are implemented in the network simulator (NS-3) and compared with the existing proportional allocation scheme (PAS) for inter-ONU and intra-ONU. The obtained results confirm that the proposed DBA schemes significantly improve the network performance in terms of delay fairness index, upstream mean delay, packet loss ratio, and packet jitter for T-CONT 2, 3, and 4.



中文翻译:

一种提高XG-PON系统性能的新型动态带宽分配方案

EPON、XG-PON、XGS-PON等时分复用无源光网络(TDM-PON)已成为广泛接受的网络架构,以满足高端消费应用的带宽需求。可用带宽仍然有限,需要有效利用。在某些情况下,一个 ONU 可能完全支配网络带宽,导致另一个 ONU 饥饿。这可能发生在每个分配周期中的 ONU 上。这强制OLT提供这样一个公平的分配方案,在轮询和调度机制期间为不同的ONU提供机会。本文提出了两种新颖的 DBA 方案,即层次分析法比例分配方案 (AHP-PAS) 和加权和模型比例分配方案 (WSM-PAS),以确定用于轮询的 ONU 的传输容器 (T-CONT) 顺序和调度。所提出的方案在网络模拟器 (NS-3) 中实现,并与现有的 ONU 间和 ONU 内的比例分配方案 (PAS) 进行比较。获得的结果证实,所提出的 DBA 方案在延迟公平指数、上行平均延迟、丢包率和 T-CONT 2、3 和 4 的数据包抖动方面显着提高了网络性能。所提出的方案在网络模拟器 (NS-3) 中实现,并与现有的 ONU 间和 ONU 内的比例分配方案 (PAS) 进行比较。获得的结果证实,所提出的 DBA 方案在延迟公平指数、上行平均延迟、丢包率和 T-CONT 2、3 和 4 的数据包抖动方面显着提高了网络性能。所提出的方案在网络模拟器 (NS-3) 中实现,并与现有的 ONU 间和 ONU 内的比例分配方案 (PAS) 进行比较。获得的结果证实,所提出的 DBA 方案在延迟公平指数、上行平均延迟、丢包率和 T-CONT 2、3 和 4 的数据包抖动方面显着提高了网络性能。

更新日期:2022-09-13
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