Please use this identifier to cite or link to this item:
Title: Performance analysis of dedicated protection and shared protection for waveband switching based on multi-granularity optical cross-connect
Authors: Guo, L
Wang, X
Jiang, D
Hou, W
Ji, W
Issue Date: 2011
Source: Optics communications, 2011, v. 284, no. 3, p. 764-776
Abstract: In order to save the switching ports and the cost of Multi-Granularity Optical Cross-Connect (MG-OXC), the waveband switching technique was proposed to groom multiple wavelength-level traffic to a few waveband tunnels to be switched by a few switching ports in MG-OXC. At the same time, protection for fibers is very important to ensure the service continuity since each wavelength carries a lot of traffic. Although existing works have addressed the waveband switching protection, most of them separately considered only the dedicated protection or shared protection in static demand scenario and did not deeply analyze and compare the dedicated protection and shared protection in dynamic demand scenario. Therefore, in this paper, we deeply study the consumptions of wavelengths in fibers and ports in MG-OXCs for Waveband Shared Protection (WSP) and Waveband Dedicated Protection (WDP) in dynamic demand scenario, and propose the port-cost calculation and update methods based on a new waveband layered auxiliary graph that is developed based on MG-OXC structure. In simulations, we compare WSP, WDP, traditional end-to-end waveband shared protection and traditional end-to-end waveband dedicated protection. Simulation results show that the shared protection has smaller port-cost, better wavelength utilization efficiency and lower blocking probability than the dedicated protection with the same waveband switching policy, and the sub-path waveband switching has bigger port-cost, better wavelength utilization efficiency and lower blocking probability than the end-to-end waveband switching with the same backup wavelength assignment policy.
Keywords: Dedicated protection
Multi-granularity optical cross-connect (MG-OXC)
Optical cross-connect (OXC)
Shared protection
Waveband switching
Publisher: Elsevier
Journal: Optics communications 
ISSN: 0030-4018
EISSN: 1873-0310
DOI: 10.1016/j.optcom.2010.09.067
Appears in Collections:Journal/Magazine Article

View full-text via PolyU eLinks SFX Query
Show full item record


Last Week
Last month
Citations as of Sep 8, 2020


Last Week
Last month
Citations as of Sep 18, 2020

Page view(s)

Last Week
Last month
Citations as of Sep 21, 2020

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.