An efficient network-side path protection scheme in OFDM-based elastic optical networks

2017 ◽  
Vol 31 (1) ◽  
pp. e3410 ◽  
Author(s):  
Hai Dao ◽  
Michel Morvan ◽  
Philippe Gravey
Keyword(s):  
Optical Networks ◽  
Protection Scheme ◽  
Path Protection

New Dimensions for Survivable Service Provisioning in Optical Backbone and Access Networks

2011 ◽  
pp. 227-252
Author(s):  
Paolo Monti ◽  
Lena Wosinska ◽  
Cicek Cavdar ◽  
Andrea Fumagalli ◽  
Jiajia Chen
Keyword(s):  
Optical Networks ◽  
Service Providers ◽  
Blocking Probability ◽  
Access Networks ◽  
Service Provisioning ◽  
Protection Scheme ◽  
Path Protection ◽  
Trade Offs ◽  
Set Up ◽  
Shared Path Protection

<div>Originally, networks were engineered to provide only one type of service, i.e. either voice or data, so only one level of resiliency was requested. This trend has changed, and today’s approach in service provisioning is quite different. A Service Level Agreement (SLA) stipulated between users and service providers (or network operators) regulates a series of specific requirements, e.g., connection set-up times and connection availability that has to be met in order to avoid monetary fines. In recent years this has caused a paradigm shift on how to provision these services. From a “one-solution-fits-all” scenario, we witness now a more diversified set of approaches where trade-offs among different network parameters (e.g., level of protection vs. cost and/or level of protection vs. blocking probability) play an important role.</div><div>This chapter aims at presenting a series of network resilient methods that are specifically tailored for a dynamic provisioning with such differentiated requirements. Both optical backbone and access networks are considered. In the chapter a number of provisioning scenarios - each one focusing on a specific Quality of Service (QoS) parameter - are considered. First the effect of delay tolerance, defined as the amount of time a connection request can wait before being set up, on blocking probability is investigated when Shared Path Protection is required. Then the problem of how to assign “just-enough” resources to meet each connection availability requirement is described, and a possible solution via a Shared Path Protection Scheme with Differentiated Reliability is presented. Finally a possible trade off between deployment cost and level of reliability performance in Passive Optical Networks (PONs) is investigated.&nbsp;The presented results highlight the importance of carefully considering each connection’s QoS parameters while devising a resilient provisioning strategy. By doing so the benefits in terms of cost saving and blocking probability improvement becomes relevant, allowing network operators and service providers to maintain satisfied customers at reasonable capital and operational expenditure levels</div>

A Multi-Backup Path Protection scheme for survivability in Elastic Optical Networks

2016 ◽  
Vol 30 ◽  
pp. 167-175 ◽  
Author(s):  
Dharmendra Singh Yadav ◽  
Abhishek Chakraborty ◽  
B.S. Manoj
Keyword(s):  
Optical Networks ◽  
Protection Scheme ◽  
Backup Path ◽  
Path Protection

scholarly journals Attack-Aware Dedicated Path Protection in Optical Networks

2016 ◽  
Vol 34 (4) ◽  
pp. 1050-1061 ◽  
Author(s):  
Marija Furdek ◽  
Nina Skorin-Kapov ◽  
Lena Wosinska
Keyword(s):  
Optical Networks ◽  
Path Protection ◽  
Dedicated Path Protection

A new algorithm based on auxiliary virtual topology for sub-path protection in WDM optical networks

2009 ◽  
Vol 32 (4) ◽  
pp. 777-781 ◽  
Author(s):  
Xingwei Wang ◽  
Lei Guo ◽  
Xuekui Wang ◽  
Yu Zhang ◽  
Xiaobing Zheng ◽  
...  
Keyword(s):  
Optical Networks ◽  
Wdm Optical Networks ◽  
Virtual Topology ◽  
Path Protection
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