Paper Info
Title
A minimal redundant shared OLT protection for hybrid WDM–TDM optical access networks
Abstract
Abstract In this paper, a hybrid WDM–TDM-based optical access network architecture has been proposed that aims to provide optical line terminal (OLT) protection and partial feeder fiber protection without using any or minimal redundant OLT or any separate protection feeder fiber. The architecture is termed as minimal redundant shared OLT protection (MRSO) architecture. MRSO provides load shared OLT protection, where the ONUs of the failed OLT are supported by either another operational OLT that is lightly loaded in times of failure or by a redundant OLT located somewhere in the network. An appropriate control mechanism to enable communication among the mutually supporting OLTs has also been introduced. The control protocol enables distributed failure detection, updating of traffic load condition, and failure recovery. In MRSO, the remote node of the failed OLT can determine the node (OLT) that can take over the services along with the associated protection path depending on the current load condition. The paper further presents a new procedure for calculating availability of service for providing shared OLT protection. The availability of network service per end user subject to different failure scenarios within the proposed network architecture has been explored. Finally, our cost and scalability comparison shows that the proposed architecture provides significant cost and scalability benefit over previously proposed OLT protection schemes while achieving higher levels of network availability.
Year
DOI
Venue
2015
10.1007/s11107-015-0566-3
Photonic Network Communications
Keywords
Field
DocType
Optical access networks,CAPEX,Availability of service,OLT protection,Load balancing,Ring mesh network architecture,Coverage area,Scalability,User density
Wavelength-division multiplexing,Network service,Optical line termination,End user,Load balancing (computing),Computer science,Computer network,Network architecture,Access network,Distributed computing,Scalability
Journal
Volume
Issue
ISSN
30
3
1572-8188
Citations 
PageRank 
References 
0
0.34
5
Authors
2
Name
Order
Citations
PageRank
Anirban Kanungoe161.29
Goutam Das25023.25