Dynamic Intelligent MAC Protocol for Metropolitan Optical Packet Switching Ring Networks

Nguyễn, Việt Hùng; Atmaca, Tülin

doi:10.1109/icc.2006.255181

Cited by 6 publications

(4 citation statements)

References 8 publications

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“…However, compared to other mechanisms such as OU-CSMA/CA or TCARD [9], the VSC mechanism improves clearly the network performance in terms of average access delay and packet loss ratio. Hence, we think that the VSC scheme is a good choice that compromises performance and complexity of asynchronous networks that support variable-size packets, while compared to other mechanisms such as MPB [7] and DI-MAC [8].…”

Section: Discussionmentioning

confidence: 99%

“…There have been some works carried out on the fairness improvement in the studied asynchronous optical ring network, such as Modified Packet Bursting (MPB) [7], Dynamic MAC (DI-MAC) [8] and the Traffic Control Architecture using Remote Descriptors (TCARD) [9]. Among them, the protocols presented in [7] and [8] provide good performance but they are not easy to understand and implement since they lack simplicity.…”

Section: Introductionmentioning

confidence: 99%

“…Among them, the protocols presented in [7] and [8] provide good performance but they are not easy to understand and implement since they lack simplicity. In this paper, we propose a Virtual SynChronization (VSC) scheme that provides a good network performance (in terms of mean access delay and packet loss ratio), while being simple to implement.…”

Section: Introductionmentioning

confidence: 99%

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Performance of a Virtual Synchronization Mechanism in an Asynchronous Optical Network

Nguyen¹,

Eido²,

Atmaca³

2009

2009 Fifth Advanced International Conference on Telecommunications

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Optical Packet Switched (OPS) ring Metropolitan Area Networks (MAN) are among the most promising solutions for Next Generation MAN architectures. However, a particular phenomenon is observed in optical ring networks with random access to the transmission medium, such as in asynchronous Optical Unslotted Carrier Sense Multiple Access with Collision Avoidance (OU-CSMA/CA). Due to the random moments of packet transmissions, the amount of bandwidth which is available for use, on each wavelength, becomes divided into many small pieces. This problem, also called bandwidth fragmentation, causes a waste of some transmission resources. In fact, free spaces which are smaller then the optical packet size are out of use for traffic insertion. The bandwidth fragmentation is reduced in synchronous networks, thanks to the better use of the transmission resources provided by these networks [6]. This paper describes an access scheme that is proposed to improve the performance of the original OU-CSMA/CA applied to an asynchronous optical ring network. We propose a "virtual synchronization" mechanism (VSC), which improves significantly the bandwidth utilization while being very simple to implement. We provide simulation works in order to validate the efficiency of the proposed mechanism. Numerical results show the improvement of performance provided by the VSC mechanism, compared to the original CSMA/CA protocol.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Performance of a Virtual Synchronization Mechanism in an Asynchronous Optical Network

Nguyen¹,

Eido²,

Atmaca³

2009

2009 Fifth Advanced International Conference on Telecommunications

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“…For example, in HORNET, each node checks every slot availability status by sensing the subcarrier multiplexed (SCM) [9]. However, MACs based on CSMA/CA cause bandwidth fragmentation and unfair access to bandwidth unless specific controls are applied, as in [16], where a dynamic intelligent algorithm is proposed to mitigate the bandwidth fragmentation problem by spacing local packet transmission epochs in order to release usable bandwidth for downstream nodes. Such methods rely on complex per-node processes.…”

Section: B Various Mac Optionsmentioning

confidence: 99%

Full Featured and Lightweight Control for Optical Packet Metro Networks [Invited]

Sadeghioon¹,

Gravey²,

Ušćumlić³

et al. 2014

J. Opt. Commun. Netw.

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Metro networks support increasing traffic volumes and evolving traffic profiles. Revisiting metro network architecture, optical packet rings with packet optical add and drop multiplexing (POADM) features are proposed in order to support both optical transparency and subwavelength granularity. A medium access control (MAC) structure for multiring POADM networks is proposed, which can support multiprotocol encapsulation and provides the support of differentiated quality of service (QoS) and differentiated protection on a per-flow basis. Unicast and multicast flows are efficiently transported between stations, with a lightweight control within each station. An opportunistic insertion process associated with an appropriate scheduling process is shown to ensure transport network QoS levels. Simple models are provided to assess the transfer performance on the POADM ring. Per-flow protection mechanisms are proposed, and their efficiency is assessed. Dimensioning costs are derived, which take into account the number of used wavelengths and the number of fixed receivers required to support a given traffic matrix. Finally, it is shown that POADM rings can be used to directly support metro Ethernet services and thus allow collapsing the stack of transport network layers.

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Optical Metropolitan Networks: Packet Format, MAC Protocols and Quality of Service

Atmaca¹,

Nguyen²

2011

Network Performance Engineering

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Dynamic Intelligent MAC Protocol for Metropolitan Optical Packet Switching Ring Networks

Cited by 6 publications

References 8 publications

Performance of a Virtual Synchronization Mechanism in an Asynchronous Optical Network

Performance of a Virtual Synchronization Mechanism in an Asynchronous Optical Network

Full Featured and Lightweight Control for Optical Packet Metro Networks [Invited]

Optical Metropolitan Networks: Packet Format, MAC Protocols and Quality of Service

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