Sub-band Virtual Concatenation Lightpath Blocking Performance Evaluation for CO-OFDM Optical Networks

Cai, Anliang; Peng, Limei; Shen, Gangxiang

doi:10.1364/acpc.2012.as4d.3

Cited by 2 publications

(10 citation statements)

References 3 publications

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“…Previous works on multipath RSA in EON that do not consider differential delay bound can be found in [5,[9][10][11]13,14,17,[23][24][25]29,30,33,34,[36][37][38][39]. Multipath RSA problems studied in these previous works can be classified into static multipath RSA problems [23,24,30,36] or dynamic multipath RSA problems [5,[9][10][11]13,14,17,25,29,33,34,[37][38][39] depending on whether connection requests are given in advance or arrival/terminating dynamically. Most of these previous works considered networks with multiple modulation formats [9,10,13,14,17,23,25,29,30,[36][37][38]…”

Section: Introductionmentioning

confidence: 99%

“…Most of these previous works considered networks with multiple modulation formats [9,10,13,14,17,23,25,29,30,[36][37][38][39], i.e., these authors studied multipath RMSA problems. The rest of these previous works considered networks with a single modulation format [5,11,24,33,34]. Among these previous works, traffic grooming mechanisms are employed in [11] and [13].…”

Section: Introductionmentioning

confidence: 99%

“…Among these previous works, traffic grooming mechanisms are employed in [11] and [13]. No traffic grooming mechanism was used in [5,10,14,17,[23][24][25]29,30,33,34,[36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

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Dynamic multi-hop multipath RMSA and traffic grooming in OFDM-based sliceable elastic optical networks

Lin

Tseng

2023

JHS

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In elastic optical networks (EON), routing, modulation selection, and spectrum assignment (RMSA) is crucial in provisioning connection requests. Multipath RMSA offers a number of benefits including provisioning of ultra-high bandwidth demands and better utilization of fragmented spectrum resource. By Combining with traffic grooming, multipath RMSA and traffic grooming is able to provide better utilization of network resource in provisioning connection requests. Adding multi-hop routing mechanism to multipath RMSA and traffic grooming increases the flexibility for selecting paths resulting in higher probability of successfully finding routing paths for connection requests. Dynamic multipath RMSA problem in EON has been investigated extensively in the literature. Dynamic multi-hop multipath RMSA and traffic grooming problem in EON is far from been well studied. This paper proposes an algorithm for the dynamic multi-hop multipath RMSA and traffic grooming problem in OFDM-based elastic optical networks with sliceable bandwidth-variable transponders. Performance of the proposed algorithm is studied via simulation. Our simulation results show that the proposed algorithm yields lower bandwidth blocking ratio than an existing algorithm.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dynamic multi-hop multipath RMSA and traffic grooming in OFDM-based sliceable elastic optical networks

Lin

Tseng

2023

JHS

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“…Some studies have been conducted in this direction. Cai et al [8] applied the VCAT technique to the frequency domain by transmitting the sub-bands of a CO-OFDM optical channel via different routes and showed that the VCAT technique can significantly improve lightpath blocking performance. Shen et al [9] developed two analytical models for performance evaluation of the VCAT technique under the conditions with and without spectrum conversion in the CO-OFDM optical networks and showed that VCAT can significantly improve lightpath blocking performance over non-VCAT.…”

Section: Introductionmentioning

confidence: 99%

“…For the VCAT technique, though there have been some studies on dynamic lightpath service provisioning [8][9], the study on the static RSA problem to the best of our knowledge is still absent. In this study, we focus on solving the RSA problem with the sub-band VCAT technique and evaluating how sub-band VCAT can help improve spectrum utilization for the elastic optical network compared to the non-VCAT case.…”

Section: Introductionmentioning

confidence: 99%

How much can sub-band virtual concatenation (VCAT) help static routing and spectrum assignment in elastic optical networks? (Invited)

Yuan

Shen

2014

2014 IEEE International Conference on Communication Systems

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Orthogonal Frequency Division Multiplexing (OFDM) has recently been proposed as a modulation technique for optical networks due to its higher spectral efficiency and superior impairment tolerance. There have been extensive studies on routing and spectrum assignment (RSA) of the OFDM-based elastic optical network, of which most focus on a single route for each lightpath service. In this paper, we study the RSA problem for the elastic optical network considering the multi-path subband virtual concatenation (VCAT) technique that allows the sub-bands of a VCAT lightpath connection to be transmitted over different routes. We develop integer linear programing (ILP) models to optimally solve the problem. We evaluate the benefit of the multi-path sub-band VCAT technique for the RSA problem through comparing with the non-VCAT case. In addition, because of the limitation of synchronization in the sub-band VCAT technique, we set a maximal distance difference among the sub-band paths of a VCAT connection to evaluate how the limitation can impact the RSA performance. We find that the multi-path sub-band VCAT technique shows a stronger benefit in a network with a higher nodal degree.

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Sub-band Virtual Concatenation Lightpath Blocking Performance Evaluation for CO-OFDM Optical Networks

Cited by 2 publications

References 3 publications

Dynamic multi-hop multipath RMSA and traffic grooming in OFDM-based sliceable elastic optical networks

Dynamic multi-hop multipath RMSA and traffic grooming in OFDM-based sliceable elastic optical networks

How much can sub-band virtual concatenation (VCAT) help static routing and spectrum assignment in elastic optical networks? (Invited)

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