QoS Provisioning in the EPON Systems with Traffic-Class Burst-Polling Based Delta DBA

Yeon-Mo YANG  Ji-Myong NHO  Nitaigour Premchand MAHALIK  Kiseon KIM  Byung-Ha AHN  

Publication
IEICE TRANSACTIONS on Communications   Vol.E89-B   No.2   pp.419-426
Publication Date: 2006/02/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.2.419
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Optical Fiber for Communications
Keyword: 
dynamic bandwidth allocation (DBA),  Ethernet passive optical networks (EPON),  quality-of-service (QoS),  burst-polling,  scheduling,  

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Summary: 
As an alternative solution to provide the quality of services (QoS) for broadband access over Ethernet Passive Optical Network (EPON), we present the usage of MAC control message for plural class queues and a traffic-class burst-polling based delta dynamic bandwidth allocation (DBA), referred to as TCBP-DDBA, scheme. For better QoS support, the TCBP-DDBA minimizes packet delays and delay variations for expedited forwarding packet and maximizes throughput for assured forwarding and best effort packets. The network resources are efficiently utilized and adaptively allocated to the three traffic classes for the given unbalanced traffic conditions by guaranteeing the requested QoS. Simulation results using OPNET show that the TCBP-DDBA scheme performs well in comparison to the conventional unit-based allocation scheme over the measurement parameters such as: packet delay, packet delay variation, and channel utilization.