MAC-Layer Performance Enhancement Using Control Packet Buffering in Optical Burst-Switched Networks

El-Rahman, Ahmed I. Abd; Rabia, Sherif I.; Shalaby, Hossam M. H.

doi:10.1109/jlt.2012.2187043

Cited by 12 publications

(4 citation statements)

References 11 publications

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“…Various other methods have been proposed to resolve contention. Wavelength conversion [14], fiber delay lines [15], and control packet buffering [16] are among the contention resolution schemes that are applicable to optical networks.…”

Section: Buffer-less Architecture and Contentionmentioning

confidence: 99%

Intelligent Deflection Routing in Buffer-Less Networks

Haeri

Trajković

2015

IEEE Trans. Cybern.

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Abstract-Deflection routing is employed to ameliorate packet loss caused by contention in buffer-less architectures such as optical burst-switched (OBS) networks. The main goal of deflection routing is to successfully deflect a packet based only on a limited knowledge that network nodes possess about their environment.In this paper, we present a framework that introduces intelligence to deflection routing (iDef). iDef decouples the design of the signaling infrastructure from the underlying learning algorithm. It consists of a signaling and a decision-making module. Signaling module implements a feedback management protocol while the decision-making module implements a reinforcement learning algorithm. We also propose several learning-based deflection routing protocols, implement them in iDef using the ns-3 network simulator, and compare their performance.

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Section: Buffer-less Architecture and Contentionmentioning

confidence: 99%

Intelligent Deflection Routing in Buffer-Less Networks

Haeri

Trajković

2015

IEEE Trans. Cybern.

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“…In particular, factors influencing the contention problem are of major interest. Recently, we have proposed a new CP-buffering-based contention resolution technique [7]. In this technique, an electronic buffer is implemented at each core node.…”

Section: Introductionmentioning

confidence: 99%

Assessment of an Optical Burst Switched Core Node With a Restricted Number of Simultaneous Active Users Using the Burst Error Loss Rate

El-Rahman¹,

Rabia

Shalaby

2014

J. Opt. Commun. Netw.

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The technical superiority of spectralamplitude coding optical code-division multiple-access (SAC-OCDMA) systems over traditional wavelength division multiplexing (WDM) systems in optical burst switched (OBS) networks is mainly attributed to the former's better medium access control (MAC) layer performance. Nevertheless, in order to conduct an accurate comparison, a thorough study of the physical layer performance should be involved, especially because in many cases the physical layer noise would affect the maximum achievable number of simultaneously active users. Hence, in this work, we develop a novel assessment approach that combines both MAC and physical layer capabilities by introducing a new burst error loss rate parameter. In particular, the approach targets cases with limitations on the number of simultaneous active users. Next, as an example of a noisy physical layer, the effect of phase-induced intensity noise on the number of active users in OBS/SAC-OCDMA systems is analyzed. Our analysis shows that this effect introduces a burst error rate (BurstER) in the multiple-access interference cancellation operation (not investigated before). This BurstER is an increasing function of the number of active users and hence would suppress the system MAC layer performance. Finally, assuming an ideal WDM physical layer, we employ the developed approach to present an illustrative performance comparison between OBS/SAC-OCDMA and OBS/WDM systems. The results show that OBS/SAC-OCDMA performance outperforms that of OBS/WDM when the number of tolerated bits in error per burst exceeds a certain value.Index Terms-Optical burst switched (OBS) networks; Phase-induced intensity noise (PIIN); Queuing theory; Spectral-amplitude coding optical code-division multipleaccess (SAC-OCDMA); Wavelength division multiplexing (WDM).

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“…In reference to the outputted process of a burst, according to the studies cited in this paper, the same probability to select the output ports, which lead to the same edge node (or destination), was used. Such an assumption makes it easy to establish the burst-outputted model in an OBS core node, but it ignores the difference of the service rates of network interface units (NIUs) 2,3 and the difference of output ports-selected rules based on optimal routing algorithms. 4 In fact, according to the general rule of an optimal routing, if there is enough remaining wavelength in a network, it should select a shortest path; it should also increase the probability of selecting a low-load or shortdelay path.…”

Section: Introductionmentioning

confidence: 99%

Blocking performance of a burst-outputted model considering different service rates and different output port-selected probabilities in an optical burst switching core node

Hou

Changyue

et al. 2013

Opt. Eng

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Abstract. In an optical burst switching core node, each output port is equipped with a different network interface unit that can provide a specific data rate. Bursts will use different probabilities of select output ports, which is in accordance to the pathlength metric-based routing optimal algorithm and wavelength resource situation. Previous studies ignore this issue. We establish a burst-outputted model considering the different service rate of output ports and different port-selected probabilities. We calculate burst-blocking probability and analyze the relationship between service rate and output-portselected probability in detail.

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MAC-Layer Performance Enhancement Using Control Packet Buffering in Optical Burst-Switched Networks

Cited by 12 publications

References 11 publications

Intelligent Deflection Routing in Buffer-Less Networks

Intelligent Deflection Routing in Buffer-Less Networks

Assessment of an Optical Burst Switched Core Node With a Restricted Number of Simultaneous Active Users Using the Burst Error Loss Rate

Blocking performance of a burst-outputted model considering different service rates and different output port-selected probabilities in an optical burst switching core node

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