NDLI: A novel fault-tolerant multi-EPON system with sharing protection through bridge ONUs

Content Provider	Springer Nature Link
Author	Hwang, I Shyan Shyu, Zen Der Ke, Liang Yu
Copyright Year	2008
Abstract	In the EPON, any failure of optical line terminal (OLT) or feeder fiber can halt the entire system. Many previous studies proposed dedicated protection architectures to protect the critical components, which results in high cost for deployment. To achieve high reliability and low-cost for deployment, this article proposes a novel fault-tolerant Multi-EPON system with cost-effective shared protection through Bridge ONUs. Under failures, the Bridge ONU controls the faulty EPON, plays the role of OLT and the transmission of faulty EPONs are restored by relaying to other interconnected adjacent EPONs. The minimum hop-count relay algorithm and the relay window mechanism are also proposed for the Multi-EPON system to efficiently help data relaying to the central office (CO). Furthermore, the one-wait dynamic bandwidth allocation enables the controller of affected Passive Optical Networks (PONs) to obtain more up-to-date buffer information from each ONU in order to enhance overall system performance. The simulation results show that the proposed Multi-EPON system can provide high system performance for different failure situations in terms of throughput, average delay, maximum delay, and expedited forwarding (EF) jitter, especially in high traffic loads.
Starting Page	24
Ending Page	38
Page Count	15
File Format	PDF
ISSN	1387974X
Journal	Photonic Network Communications
Volume Number	18
Issue Number	1
e-ISSN	15728188
Language	English
Publisher	Springer US
Publisher Date	2008-08-20
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	EPON Protection Fault-tolerant Multi-bridge ONU Dynamic bandwidth allocation Characterization and Evaluation of Materials Electrical Engineering Computer Communication Networks
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Computer Networks and Communications Electrical and Electronic Engineering Hardware and Architecture Software

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