Improved Dynamic Bandwidth Allocation Algorithm for XGPON

Rizwan Aslam Butt

doi:10.1364/JOCN.9.000087

Improved Dynamic Bandwidth Allocation Algorithm for XGPON

2016-12-22

31

PRE

AI

R

Rizwan Aslam Butt

S

Sevia Mahdaliza Idrus *

K

Kashif Naseer Qureshi

N

Nadiatulhuda Zulkifli

M

Mohammad, Siti Hasunah

DOI：10.1364/JOCN.9.000087

原文链接

摘要

En 中文

Passive optical networks (PONs) require a dynamic bandwidth allocation (DBA) algorithm at the optical line terminal for efficient utilization of upstream bandwidth among the optical network units (ONUs) as per the quality of service requirements for each traffic class defined by PON standardizing bodies. The GigaPON access network (GIANT) was the first International Telecommunication Union compliant DBA algorithm, which is further improved by Immediate Allocation with Colorless Grant (IACG) and Efficient Bandwidth Utilization (EBU) algorithms. However, the polling mechanism of IACG and EBU may not report the true bandwidth demand of ONUs during a service interval. Furthermore, ONU scheduling mechanisms give preference to best effort traffic over the assured traffic during recursive allocation cycles in a service interval, which results in an increase in upstream delays for the assured traffic class. This paper presents an improved bandwidth utilization (IBU) algorithm, which rectifies these deficiencies with a novel polling and scheduling mechanism. Experimental results show that IBU improves the mean of upstream delays of type 2 traffic up to 98%, 93%, and 76% and up to 99%, 92%, and 73% for type 3 traffic compared to the GIANT, IACG, and EBU algorithms, respectively. IBU also shows the least frame loss compared to these state-of-the-art algorithms.

Keyword:

DBA

Dynamic bandwidth allocation

Efficient bandwidth utilization

PON

XGPON

Improved Dynamic Bandwidth Allocation Algorithm for XGPON

摘要

AI总结

期刊

机构

引用论文