A novel admission control mechanism in GMPLS-based IP over optical networks |
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| Affiliation: | 1. Faculty of Computer Science & Information Technology, University of Kassala, Kassala, Sudan;2. College of Graduate Studies, Department of Computer Science, Sudan University of Science and Technology (SUST), Sudan;3. National Institute of Telecommunications (Inatel), Santa Rita do Sapucaí, MG, Brazil;4. Instituto de Telecomunicações, Portugal;5. University of Fortaleza (UNIFOR), Fortaleza, CE, Brazil;6. ITMO University, St. Petersburg, Russia;7. Center of Excellence in Information Assurance (CoEIA), King Saud University, Riyadh, 11653, Saudi Arabia;8. College of Computer and Information Sciences (CCIS), King Saud University, Riyadh, Saudi Arabia;9. Computer Science and Engineering Department, Thapar University, Patiala, Punjab, India;1. Deptt. of CSA, DAVU Jalandhar, India;2. Deptt. of CS, GNDU Amritsar, India;1. School of Environmental and Natural Resource Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia;2. Centre for Tropical Climate Change System, Institute of Climate Change, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia |
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| Abstract: | With the migration of real-time and high-priority traffic in IP networks, dynamic admission control mechanisms are very important in high-capacity networks where IP and optical technologies have converged with a GMPLS-based control-plane. In this paper proposes, we propose an integrated multilayer traffic engineering framework that considers both physical and logical (optical layer) topologies for dynamically admitting new label switched paths (LSPs) in GMPLS networks. The dynamic admission control mechanism is based on an optimal resolution of an integer linear programming model that takes into account both lightpaths availability, wavelength continuity and routing constraints. In order to minimize LSPs set up delays, this mechanism first considers the logical topology (set of lightpaths) that is already in place before setting up a new lightpath for the incoming LSP, resulting in an additional set up signaling delay. When tested by simulations, results confirm that the proposed formulation effectively improves the network performance by reducing the connection blocking rate, while guaranteeing strict delay and noise constraints. |
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