A New All-Optical Switching Node Including Virtual Memory and Synchronizer

Batti, Selma; Zghal, Mourad; Boudriga, Noureddine

doi:10.4304/jnw.5.2.165-179

Cited by 20 publications

(7 citation statements)

References 29 publications

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“…An out-of-band signaling scheme is used to exchange the necessary control information between the core nodes along the related optical route. Figure 1 depicts the architecture that has been proposed in [8] to implement optical nodes. The node is composed of N input ports and N output ports.…”

Section: State Of the Art Of Quality Of Service Provisioning Schemes mentioning

confidence: 99%

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Contention Resolution for Transmission Control Protocol over Optical Burst-Switching Networks Using Random Segment Dropping

Abdallah¹,

Hamdi²,

Boudriga³

et al. 2009

SIMULATION

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Optical burst switching (OBS) is a promising method for data transfer in photonic networks based on a Wavelength Division Multiplexing (WDM) technology. Transmission control protocol (TCP)-based applications generate the majority of data traffic in the Internet1 thus, understanding and improving the performance of TCP over OBS networks is critical. In this paper, we develop a novel burstdropping strategy to improve the quality of service provided by TCP over OBS networks. Our approach relies on random-segment dropping according to the capacity of a special optical component, called the optical virtual memory, which is used for buffering purposes within the optical switches. The core node predicts incipient congestion by computing the average blocking duration in the optical virtual memories. When this size exceeds a threshold, segments are randomly dropped. Simulation results show that the proposed method performs better than common techniques in terms of burst loss probability and transmission delay.

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Section: State Of the Art Of Quality Of Service Provisioning Schemes mentioning

confidence: 99%

“…At the entrance to the first loop (L1) we use one Fiber Bragg Grating (FBG), which overlaps a reflection band that forces an optical data unit in loop L1 to keep circulating if the signal carrying the data unit has a wavelength SIMULATION Volume 86, Number 4 Architecture of the all-optical virtual memory[8].…”

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confidence: 99%

Contention Resolution for Transmission Control Protocol over Optical Burst-Switching Networks Using Random Segment Dropping

Abdallah¹,

Hamdi²,

Boudriga³

et al. 2009

SIMULATION

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“…where c = 3 × 10 8 m/s is the light celerity and n e is the effective refractive index. The control unit (CU) 36 dynamically configures the turn number in each loop based on the knowledge of a codeword. At the detection of an input optical pulse by the synchronizer, the CU commands the wavelength converter, which allows signal wavelength conversion from 0 to 1 in the fiber Bragg grating (FBG) reflection band.…”

Section: Optical Codeword Conceptmentioning

confidence: 99%

All‐optical VPN platform for multisite VLC‐based networks

Salhi

Sliti

Boudriga

2018

Trans Emerging Tel Tech

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Optical networks and, in particular, visible light communication represent a very promising communication medium for future‐generation company networks. The establishment of virtual private networks (VPNs) in these specific distributed networks is a fundamental issue. In this paper, we present an all‐optical VPN platform based on visible light communication small cells on the access side and an optical fiber link on the backbone side. We exploited the security enhancement using the superposition of optical signals encoded using optical code‐division multiplexing codewords specific to each user. Two VPN modes are proposed: transport and tunnel. Even though the transport mode provides a much lower blocking rate as well as transmission performance (lower packet delay), the tunnel mode is advantageous from a security perspective due to the embedded optical code‐division multiple access encoding that it implements. Simulations are carried out for both modes to study the performance and security level provided by the proposed VPN architecture relatively to specific parameters (codeword size and number of simultaneous users).

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“…Also, a Jet-like signaling approach and a QoS contention resolution based on wavelength converters and optical buffering are adopted [7]. The OBS core node architecture proposed in [8] is used to implement the grooming capability. This architecture is composed of N input/output ports.…”

Section: Grooming Capable Core Node Architecturementioning

confidence: 99%

Dynamic optical burst grooming in OBS networks

Abdallah

Boudriga

2012

2012 14th International Conference on Transparent Optical Networks (ICTON)

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In this paper, we investigate the design and the implementation of dynamic optical bursts grooming in segmented-based traffic OBS networks. The objective is to aggregate into one burst, different overlapping short bursts which are transmitted to the same destination. This process is executed at the grooming unit of the core node. We propose a design and a physical implementation of this unit based on the Virtual Optical Memory (VOM©) component. The VOM is a RAM-like memory which is used for temporal storing of data segments. Moreover, a signaling scheme and a grooming control module are developed in order to manage the grooming operation. In addition, a dimensioning framework is carried out and a performance study is performed in order to evaluate the grooming process according the grooming factor, VOM capacity, and maximum storing period.

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A New All-Optical Switching Node Including Virtual Memory and Synchronizer

Cited by 20 publications

References 29 publications

Contention Resolution for Transmission Control Protocol over Optical Burst-Switching Networks Using Random Segment Dropping

Contention Resolution for Transmission Control Protocol over Optical Burst-Switching Networks Using Random Segment Dropping

All‐optical VPN platform for multisite VLC‐based networks

Dynamic optical burst grooming in OBS networks

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