Simultaneous connections routing in W-S-W elastic optical switches with limited number of connection rates

Kabacinski, W.; Rajewski, Remigiusz; Al-Tameemi, Atyaf

doi:10.23919/ondm.2017.7958549

Cited by 8 publications

(32 citation statements)

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“…In the present study, we extend our previously reported results [19] in three ways. First, for the connections considered in this study, we assume that the ratio between the connection rates and fiber capacity is not a whole number.…”

Section: Introductionsupporting

confidence: 90%

“…In this study, we use the model proposed by [19], but we focus only on the 2 × 2 switching fabric, where we do not impose any limits on the ratio between n, m 1 , and m 2 . Let ℂ be set up in the WSW1 switching fabric, and it contains only connections with two rates: m 1 and m 2 , where m 1 < m 2 .…”

Section: Model Descriptionmentioning

confidence: 99%

“…In [19], we first considered the upper bound for the RNB conditions of WSW1 switching fabrics, as well as providing the necessary and sufficient conditions for switching fabrics with two input and output fibers, and serving two connection rates. Another limitation is that the ratio between the connection rates as well as between the connection rates and the fiber capacity should be an integer.…”

Section: Introductionmentioning

confidence: 99%

“…4, we present two control algorithms, which are based on merging permutation matrices. The first algorithm proposed in our previous study [19] and the second algorithm uses a different approach for merging permutation matrices. In Sect.…”

Section: Introductionmentioning

confidence: 99%

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Rearrangeable $$2 \times 2$$ elastic optical switch with two connection rates and spectrum conversion capability

2019

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In this study, we consider simultaneous connection routing in the three-stage switching fabric of the wavelength-spacewavelength architecture for elastic optical switches, which serve connections that can occupy different spectrum widths. Recently, the upper bound of the rearrangeability conditions was derived and proved for a switching fabric serving a limited number of connection rates. A control algorithm based on matrix decomposition was also proposed. In addition, the necessary and sufficient conditions were derived and proved for a switching fabric with a size of 2 × 2 serving only two connection rates, but only when the ratios between the connection rates and link capacity are integers. In this study, we extend these results to an arbitrary ratio between the connection rates and link capacity. The number of frequency slot units required in the interstage links is much lower than that in the strict-sense nonblocking switching fabrics. We also propose modifications to the control algorithm, which further reduces the number of frequency slot units required in many cases. Finally, we extend the results for 2 × 2 switching fabrics to those with a size of r × r.

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Section: Introductionsupporting

confidence: 90%

Section: Model Descriptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Rearrangeable $$2 \times 2$$ elastic optical switch with two connection rates and spectrum conversion capability

2019

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“…Then, the second version of the simulator was expanded to provide for rearrangeable nonblocking conditions in the WSW1 architecture. The results obtained were compared with these presented in paper [18]. However, in both simulator versions mentioned above, graphical representation of the WSW1 switching fabric was not possible -it merely had the shape of one or several gray elements.…”

Section: Simulatormentioning

confidence: 99%

Defragmentation in W-S-W Elastic Optical Networks

Rajewski¹

2018

JTIT

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Abstract-In most cases defragmentation occurs, in elastic optical networks, in the links between the network's nodes. In this article, defragmentation in an elastic optical network's node is investigated. The W-S-W switching architecture has been used as a node. A short description of a purpose-built simulator is introduced. Several methods of defragmentation which are implemented in this simulator are described as well.

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New upper bound for a rearrangeable non‐blocking WSW architecture

Lin

2019

IET Communications

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Simultaneous connections routing in W-S-W elastic optical switches with limited number of connection rates

Cited by 8 publications

References 0 publications

Rearrangeable $$2 \times 2$$ elastic optical switch with two connection rates and spectrum conversion capability

Rearrangeable $$2 \times 2$$ elastic optical switch with two connection rates and spectrum conversion capability

Defragmentation in W-S-W Elastic Optical Networks

New upper bound for a rearrangeable non‐blocking WSW architecture

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