NDLI: Fairness enhanced dynamic routing and spectrum allocation in elastic optical networks

Content Provider	IET Digital Library
Author	Xiong, Yu Fan, Xue Liu, Shuming
Abstract	The finer spectrum granularity unit in elastic optical networks makes wider spectrum services more likely to be restricted by the constraints of spectrum continuity and spectrum contiguity (2SC), leading to higher blocking probability (BP). Obviously, it would deteriorate the fairness among multi-granularity services. Therefore, a fair dynamic routing and spectrum allocation algorithm is proposed. By virtualising the network resources as a ‘resource pool’, a two-dimensional rectangle packing model in combination with service holding-time is introduced to satisfy the 2SC constraints and to optimise the allocation of the ‘resource pool’ for dynamic multi-granularity services. Besides multi-granularity service fairness is achieved by tackling heterogeneous-size services together. Simulation results show that the benefit in terms of fairness can be reaped. Meanwhile, the authors also investigate the proposed algorithm's impact on performance metrics: namely, spectrum resource utilisation and BP. The results indicate that the proposed algorithm can achieve lower BP and higher spectrum efficiency.
Starting Page	1012
Ending Page	1020
Page Count	9
ISSN	17518628
Volume Number	10
e-ISSN	17518636
Issue Number	Issue 9, Jun (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/10/9
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2015.0783
Journal	IET Communications
Publisher Date	2016-06-09
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	2SC Constraints Blocking Probability Communication Network Design, Planning And Routing Elastic Optical Network Fair Dynamic Routing Fairness Enhanced Dynamic Routing Heterogeneous-size Services Multigranularity Services Network ReSource Optical Fibre Network Resource Pool Service Holding-time Spectrum Allocation Spectrum Allocation Algorithm Spectrum Contiguity Spectrum Granularity Unit Spectrum Resource Utilisation Spectrum Services Telecommunication Network Routing Two-dimensional Rectangle Packing Model
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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