Spectrum Allocation Policy in Elastic Optical Networks

Ireneusz Olszewski


The considered problem covers routing and spectrum allocation problem (RSA problem) in Elastic Optical Networks while maintaining the spectrum continuity constraints, non-overlapping spectra constraints for adjacent connections on individual links of the network and spectrum contiguity constraints of the connection. In this article the modified version of the First Fit spectrum slot allocation policy for Fixed Alternate Routing in flexible optical networks has been proposed. The Fixed Alternate Routing with proposed spectrum allocation policy rejects fewer requests, provides less bandwidth blocking probability and less spectrum fragmentation than Fixed Alternate Routing with well-known First Fit and Exact Fit spectrum allocation policies. However, the cost of improving these parameters is a higher computational complexity of the proposed allocation policy.

Full Text:



X. Wan, N. Hua, X. Zheng, “Dynamic Routing and Spectrum Assignment in Spectrum –Flexible Transparent Optical Networks,” Opt. Commun. Netw. vol. 4, No. 8, pp. 603-613, August 2012.

I. Olszewski, “Improved Dynamic Routing Algorithms in Elastic Optical Networks,” Photonic Network Communications, 2017, DOI: 10.1007/s11107-017- 0700-5

K. Walkowiak, A. Kasprzak, M. Klimkowski, “Dynamic Routing of Anycast and Unicast Traffic in Elastic Optical Networks,” IEEE International Conference on Communications (ICC 2014), June 2014

B. C. Catterjee, N. Sarma, E. Oki, “Routing and Spectrum Allocation in Elastic Optical Networks: A Tutorial,” IEEE Communications Surveys and Tutorials,” Vol. 17, No. 3, pp.1776-1800, third quarter 2015.

A. Rosa, C. Cavdar, S. Sarvalho, J. Costa, L. Wosinska, “Spectrum allocation policy modelling for elastic optical networks,” in roc. 9th Int.Conf. HONET, 2012, pp. 242-246.

R. Wang, B. Mukherjee, “Spectrum management in heterogenous bandwidth optical networks,” Opt. Switching and Networking, 11, pp. 83-91, 2014

B. Mukherjee, “Optical WDM Networks,” Berlin, Germany: Springer-Verlag, 2006.

J. Comellas, G. Junyent, “Improving Link Spectrum Utilization in FlexGrid Optical Networks,” IEEE/OSA Journal of Optical Communications and Networking, vol.7, no.7, pp. 618-627, July 2015.

J. Zhao, S. Subrabaniam, M. Brandt-Pearce, “Virtual Topology Mapping in Elastic Optical Networks,” Optical Network and System, IEEE ICC 2013, pp 3904-3908.

B. C. Catterjee, E. Oki, “Performance Evaluation of Spectrum Allocation Policies for Elastic Optical Networks,” ICTON 2015


  • There are currently no refbacks.

International Journal of Electronics and Telecommunications
is a periodical of Electronics and Telecommunications Committee
of Polish Academy of Sciences

eISSN: 2300-1933