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Article

Label Stacking Scenarios in Hybrid Wavelength and Code-Switched GMPLS Networks

School of Electrical and Computer Engineering, Nanfang College of Sun Yat-Sen University, Guangzhou 510970, China
Electronics 2018, 7(10), 251; https://doi.org/10.3390/electronics7100251
Received: 18 September 2018 / Revised: 10 October 2018 / Accepted: 12 October 2018 / Published: 14 October 2018
(This article belongs to the Special Issue Optical Communications and Networks)
Multi-protocol label switching (MPLS) is a promising solution to implement high-speed internet protocol (IP) networks by reducing the layer number. To meet the increasing demand for data traffic, optical packet switching (OPS) is integrated under IP to provide high bandwidth to end users. Generalized MPLS (GMPLS) is perfectly compatible with the routing algorithm in IP/MPLS as it supports packet-switching functions. In this paper, we investigate the label stacking scenarios in GMPLS networks. In GMPLS, label stacking is done to reduce the node complexity by appending multiple labels to a single packet. Wavelength-division multiplexing (WDM) and optical code-division multiplexing (OCDM) signals have been widely used as identifying labels. As the labels can be permutated among the wavelengths or code dimensions, the structure of a label stack can be varied. However, studies on the relationship between label stacking scenarios and network performance are limited. To investigate this issue, we propose three label stacking models: sequential code distribution; sequential wavelength distribution, and random label distribution. The simulation results show that the sequential wavelength assignment, wherein the labels are uniformly distributed among the wavelengths, exhibits the best system performance in terms of the label-error rate (LER). View Full-Text
Keywords: wavelength-division multiplexing (WDM); generalized multi-protocol label switching (GMPLS); optical code-division multiplexing (OCDM); label stacking wavelength-division multiplexing (WDM); generalized multi-protocol label switching (GMPLS); optical code-division multiplexing (OCDM); label stacking
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MDPI and ACS Style

Chen, K.-S. Label Stacking Scenarios in Hybrid Wavelength and Code-Switched GMPLS Networks. Electronics 2018, 7, 251. https://doi.org/10.3390/electronics7100251

AMA Style

Chen K-S. Label Stacking Scenarios in Hybrid Wavelength and Code-Switched GMPLS Networks. Electronics. 2018; 7(10):251. https://doi.org/10.3390/electronics7100251

Chicago/Turabian Style

Chen, Kai-Sheng. 2018. "Label Stacking Scenarios in Hybrid Wavelength and Code-Switched GMPLS Networks" Electronics 7, no. 10: 251. https://doi.org/10.3390/electronics7100251

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