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ICC
2007
IEEE

A Two-phase Approach for Dynamic Lightpath Scheduling in WDM Optical Networks

13 years 8 months ago
A Two-phase Approach for Dynamic Lightpath Scheduling in WDM Optical Networks
— Lightpath scheduling is an important capability in next-generation wavelength-division multiplexing (WDM) optical networks to reserve resources in advance for a specified time period while provisioning end-to-end lightpaths. In a dynamic environment, the end user requests for dynamic scheduled lightpath demands (D-SLDs) need to be serviced without the knowledge of future requests. Even though the starting time of the request may be hours or days from the current time, the end-user however expects a quick response as to whether the request could be satisfied. We propose a twophase approach to dynamically schedule and provision D-SLDs. In the first phase, termed the deterministic lightpath scheduling phase, upon arrival of a lightpath request, the network control plane schedules a path with guaranteed resources so that the user can get a quick response with a deterministic lightpath schedule. In the second phase, termed the lightpath re-optimization phase, we re-provision some alread...
Lu Shen, Xi Yang, Ajay Kumar Todimala, Byrav Ramam
Added 02 Jun 2010
Updated 02 Jun 2010
Type Conference
Year 2007
Where ICC
Authors Lu Shen, Xi Yang, Ajay Kumar Todimala, Byrav Ramamurthy
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