Redundant trees for preplanned recovery in arbitrary vertex-redundant or edge-redundant graphs
IEEE/ACM Transactions on Networking (TON)
Light trees: optical multicasting for improved performance in wavelength routed networks
IEEE Communications Magazine
Design of the optical path layer in multiwavelength cross-connected networks
IEEE Journal on Selected Areas in Communications
Optical layer multicast: rationale, building blocks, and challenges
IEEE Network: The Magazine of Global Internetworking
| Hi-index | 0.00 |
As multicast applications become more and more popular, implementing multicast in the optical domain has attracted increased attention due to its more efficient bandwidth usage. And also these services have quality-of-service requirements. In this article, the problem of cost-effective optical multicast provisioning to satisfy the differentiated leaf availability requirements is formally stated. A Mixed Integer Linear Program formulation is proposed for provisioning dedicated light-tree protection with differentiated leaf availability guarantee. The algorithm is so complex and infeasible that we also propose a feasible two-step approximate approach to solve the problem. Different from the previous schemes, our scheme finds out the primary light-trees and backup paths for destination nodes whose availability is not satisfied. Because of taking the different leaf availability requirements into account, the proposed algorithm obtains a more efficient feasible solution requiring less network resources.