Home // CLOUD COMPUTING 2015, The Sixth International Conference on Cloud Computing, GRIDs, and Virtualization // View article
Authors:
Fariborz Mousavi Madani
Sheida Mokhtari
Keywords: elastic optical network; fragmentation-aware; load-balancing; VONE
Abstract:
Optical network virtualization has recently been studied extensively as a promising solution to share physical infrastructure resources among different users and applications. Virtual network embedding over elastic optical networks has recently attracted massive attentions as a promising solution to realize fine-grained flexibility in resource provisioning. Variation of bandwidth requirements associated with virtual network requests accompanied by nondeterministic nature in arrival and holding times of them result in fragmentation of spectral blocks along both frequency and spatial directions. Spectral fragmentation refrains commitment to spectrum contiguity and spectrum continuity constraints in lightpath establishment thereby severely exacerbate blocking probability, as well as spectrum utilization. Fragmentation-aware routing and spectrum assignment problem has been extensively studied in the context of elastic optical network provisioning. These schemes, however, cannot be applied to virtual network embedding since we cannot refer to routing and spectrum assignment problem to implement virtual link mapping without regard to virtual node mapping. Therefore, in this paper, an integer linear programming formulation for fragmentation-aware virtual network embedding was developed for the first time to our knowledge. Numerical simulations for three different scenarios were carried on and demonstrated that our proposed model outperforms the previous work over a wide range of offered traffic loads under the same conditions.
Pages: 27 to 32
Copyright: Copyright (c) IARIA, 2015
Publication date: March 22, 2015
Published in: conference
ISSN: 2308-4294
ISBN: 978-1-61208-388-9
Location: Nice, France
Dates: from March 22, 2015 to March 27, 2015