Analysis of an optical packet switch with partially shared buffer and wavelength conversion

Debnath, Soumitra; Mahapatra, Santanu; Gangopadhyay, R.

doi:10.1049/iet-com:20060537

Cited by 6 publications

(4 citation statements)

References 20 publications

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“…For all-optical packet switching, optical buffering implemented by fiber delay lines (FDLs) [2,[6][7][8][9][11][12][13][14]17,19,20,[24][25][26]28,29] is a solution to the output contention problem. Optical packets can be recirculated in FDLs to avoid output contention.…”

Section: Introductionmentioning

confidence: 99%

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A latency-aware scheduling algorithm for all-optical packet switching networks with FDL buffers

Chou

Lin

2010

Photon Netw Commun

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Optical buffers implemented by fiber delay lines (FDLs) have a volatile nature due to signal loss and noise accumulation. Packets suffer from excessive recirculation through FDLs, and they may be dropped eventually in their routing paths. Because of this, packet scheduling becomes more difficult in FDL buffers than in RAM buffers, and requires additional design considerations for reducing packet loss. We propose a latency-aware scheduling scheme and an analytical model for all-optical packet switching networks with FDL buffers. The latency-aware scheduling scheme is intended to minimize the packet loss rate of the networks by ranking packets in the optimal balance between latency and residual distance. The analytical model is based on non-homogeneous Markovian analysis to study the effect of the proposed scheduling scheme on packet loss rate and average delay. Furthermore, our numerical results show how various network parameters affect the optimal balance. We demonstrate quantitatively how to achieve the proper balance between latency and residual distance so that the network performance can be improved significantly. For instance, we find that under a given latency limit and light traffic load our scheduling scheme achieves a packet loss rate 71% lower than a scheduling scheme that ranks packets simply based on latency

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Section: Introductionmentioning

confidence: 99%

“…Some proposed output buffer switches with FDL buffers [6,7,11,14]. Some proposed shared buffer switches with FDL buffers [12,19,20,28,29], and some proposed hybrid buffer switches with FDL buffers [9,8]. They mainly focus on analyzing and reducing packet loss due to buffer overflow.…”

Section: Introductionmentioning

confidence: 99%

A latency-aware scheduling algorithm for all-optical packet switching networks with FDL buffers

Chou

Lin

2010

Photon Netw Commun

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“…Optical buffering implemented by FDLs [4], [5], [6], [7], [8], [9], [10], [11], [12], [13], [14], [15], [16], [17], [18], [19] is a main solution to the output contention. Optical packets can be recirculated in FDLs to avoid the output contention.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of a prioritization scheduling scheme for asynchronous optical packet switching networks

Chou

Lin

2010

2010 Second International Conference on Ubiquitous and Future Networks (ICUFN)

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All-optical packet switching is a promising scheme to meet high-capacity data transmission and avoid the bottleneck of optical-electrical-optical conversion. However, optical buffers implemented by Fiber Delay Lines (FDLs) suffer a signal quality issue that noise and crosstalk from optical components of FDL buffers induce signal loss and noise accumulation. Optical packets will be dropped, if signal loss and noise accumulation result in poor signal quality. Because of this, packet scheduling becomes more difficult in the FDL buffer than in the RAM buffer, and requires additional design considerations to reduce packet loss. In this paper, we propose a prioritization scheduling scheme for asynchronous all-optical packet switching networks with FDL buffers. The prioritization scheduling scheme is intended to minimize the packet loss probability and the average latency of the networks by ranking packets in the optimal balance between latency and residual distance. We demonstrate quantitatively how to achieve the fitting balance between latency and residual distance so that the network performance can be improved significantly.Index Terms-Multi-hop packet scheduling, optical networks, optical packet switching, fiber delay lines, buffers.

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“…To address this issue, an optical packet switch can exploit time, space, and wavelength domains or a combination of them to avoid packet contention [28,[59][60][61][62][63][64].…”

Section: Contention Resolutionsmentioning

confidence: 99%

Design and analysis of optical packet switching systems with multicast capability

Huang¹

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Optical fiber communication has developed so rapidly during the last decades that it has become the backbone of today's communication systems. To take advantage of the huge bandwidth of optical fiber links, optical packet switching systems have been proposed and investigated intensively. However, most of the existing optical packet switches cannot effectively support multicast applications. To address this problem, this thesis is focused on optical multicast packet switching. Several optical multicast

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Analysis of an optical packet switch with partially shared buffer and wavelength conversion

Cited by 6 publications

References 20 publications

A latency-aware scheduling algorithm for all-optical packet switching networks with FDL buffers

A latency-aware scheduling algorithm for all-optical packet switching networks with FDL buffers

Performance analysis of a prioritization scheduling scheme for asynchronous optical packet switching networks

Design and analysis of optical packet switching systems with multicast capability

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