A Novel Dynamic Bandwidth Allocation Mechanism for Star-Ring-Based EPON
Joint Authors
Lee, Jhong-Yue
Hwang, I-Shyan
Shyu, Zen-Der
Source
ISRN Communications and Networking
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-04-27
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Ethernet Passive Optical Network (EPON) is proposed as a simple, cost-effective and scalable solution for bandwidth bottlenecks in access networks which can enhance the system performance because it transmits the aggregated high-speed traffic from hundreds of subscribers.
Dynamic Bandwidth Allocation (DBA) mechanism has not yet been seriously considered for use in star-ring EPON architecture.
In this paper, a distributed QoS-based dynamic bandwidth allocation (DQ-DBA) scheduling mechanism for the star-ring-based EPON architecture including optical line terminal (OLT), Sub-OLT and ONUs has been proposed to improve the system performance of traditional tree-based EPON architecture.
In DQ-DBA, the highest-priority traffic of each ONU is directed to the OLT by the tree structure; moreover, the lower-priority traffic on each ONU is transmitted to the Sub-OLT by ring architecture.
This approach can effectively resolve the idle period problem and reduce the overloading of OLT in conventional DBA mechanisms.
Exhaustive simulation experiments are performed to compare the system performance between the tree and the star-ring architectures and validate the effectiveness of the proposed mechanism.
Simulation results show that the proposed DQ-DBA mechanism in star-ring architecture can reduce packet delay and jitter for the high-priority traffic, thus ensuring the quality of service (QoS) regardless of subscriber numbers.
American Psychological Association (APA)
Hwang, I-Shyan& Lee, Jhong-Yue& Shyu, Zen-Der. 2011. A Novel Dynamic Bandwidth Allocation Mechanism for Star-Ring-Based EPON. ISRN Communications and Networking،Vol. 2011, no. 2011, pp.1-9.
https://search.emarefa.net/detail/BIM-502120
Modern Language Association (MLA)
Hwang, I-Shyan…[et al.]. A Novel Dynamic Bandwidth Allocation Mechanism for Star-Ring-Based EPON. ISRN Communications and Networking No. 2011 (2011), pp.1-9.
https://search.emarefa.net/detail/BIM-502120
American Medical Association (AMA)
Hwang, I-Shyan& Lee, Jhong-Yue& Shyu, Zen-Der. A Novel Dynamic Bandwidth Allocation Mechanism for Star-Ring-Based EPON. ISRN Communications and Networking. 2011. Vol. 2011, no. 2011, pp.1-9.
https://search.emarefa.net/detail/BIM-502120
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-502120