Performance Analysis of Multicast Traffic over Spectrum Elastic Optical Networks

Wang, Qike; Chen, Lian-Kuan

doi:10.1364/ofc.2012.oth3b.7

Cited by 51 publications

(28 citation statements)

References 7 publications

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“…Recently, some multicast tree routing issues were investigated for networks with fixed multicasting source and destination nodes [6][7][8][9][10][11][12][13]. The authors in [6] studied the online routing of bandwidth-guaranteed multicasts in traditional IP networks which can be applied into provisioning bandwidth-guaranteed virtual private network (VPN) services under the "hose" service model.…”

Section: Introductionmentioning

confidence: 99%

“…The work in [9] focused on supporting multicast routing from electronic layers in Multicast Incapable (MI) WDM networks. The work in [11][12][13] given. However, these works do not fully consider multicast routing together with virtual node mapping and multicast tree design, which may limit the bandwidth sharing on links thus decreasing the utilization of physical resources.…”

Section: Introductionmentioning

confidence: 99%

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Multicast service-oriented Virtual Network mapping over Elastic Optical Networks

Gao

Zhong

et al. 2015

2015 IEEE International Conference on Communications (ICC)

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Network Function Virtualization (NFV) allows multiple Virtual Networks (VNs) to share the underlying physical infrastructure via VN mapping, thus improving the utilization of physical resources. In this paper, for the first time, we study the multicast service-oriented VN mapping that can support big data applications over Elastic Optical Networks (EONs). Since the problem of minimizing the spectrum consumption in multicast service-oriented VN mapping is NPhard, we propose an efficient heuristic algorithm, called Integrated Genetic and Simulated Annealing (IGSA) algorithm to address the problem with low computational complexity. By encoding node mapping, multicast tree construction, link mapping and spectrum requirements in the same gene and autoadjusted evolution, and utilizing simulated annealing to find the fittest multicast requests mapping order, IGSA can perform joint optimization for all the multicast requests in a global way. Through extensive simulations, we demonstrate that IGSA outperforms the other heuristic solutions in terms of spectrum consumption, blocking probability and normalized throughput, while achieving close to minimum spectrum consumption with a much lower time complexity than MILP.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multicast service-oriented Virtual Network mapping over Elastic Optical Networks

Gao

Zhong

et al. 2015

2015 IEEE International Conference on Communications (ICC)

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“…In EON, the optical spectrum is divided into a number of frequency slots, and the width of each slot corresponds to the spectrum width of an OFDM subcarrier [5]. According to the ongoing standardization efforts in ITU-T, the minimum frequency slot that can be allocated will be 12.5 GHz (which will correspond to the minimum granularity) [6] [7].…”

Section: Introductionmentioning

confidence: 99%

Optimization in spectrum-sliced optical networks

2013

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Current communication in optical networks presents a wide range of granularities, making it hard to use the optical spectrum efficiently under the WDM framework. In Spectrum Sliced Optical Networks, the WDM rigid frequency grid is replaced by a more flexible structure, in which the spectrum is organized in frequency slots, and each traffic flow is assigned to an appropriate set of contiguous slots. The classical Routing and Wavelength Assignment (RWA) problem is then replaced by a Routing and Spectrum assignment (RSA) problem. This paper addresses an iterativa approach to balance the network load during the routing decision in Spectrum-Elastic Optical Path Networks. We have built numerical examples to illustrate the performance of our routing approach. Comparisons to other routing techniques show that our approach mitigates the lightpath requests.blocking probability

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“…Due to the unique requirements on NC&M (e.g., RMSA for resource allocation), supporting efficient all-optical multicast in EONs would be more challenging and has just started to attract research interests since recently. Wang and Chen [21] first studied all-optical multicast in EONs and compared the performance of two simple multicast-capable routing and spectrum assignment (MC-RSA) algorithms. However, they did not consider either the QoT constraint or the adaptive modulation selection.…”

mentioning

confidence: 99%

Leveraging Light Forest With Rateless Network Coding to Design Efficient All-Optical Multicast Schemes for Elastic Optical Networks

Yang

Gong

Zhou

et al. 2015

J. Lightwave Technol.

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International audienceIn this paper, we study the multicast-capable routing , modulation and spectrum assignment (MC-RMSA) schemes that consider the physical impairments from both the transmission and light-splitting in elastic optical networks (EONs). Specifically, we propose to provision each multicast request with a light-forest which consists of one or more light-trees to avoid the dilemma that because of the accumulated physical impairments, a relatively large light-tree may have to use the lowest modulation-level and hence consume too many frequency slots (FS'). In order to further improve the spectral efficiency and compensate for the differential delays among the light-trees, we incorporate the rateless network coding (R-NC) in the multicast system. We first formulate an integer linear programming (ILP) model to solve the problem for static network planning. Then, we propose three time-efficient heuristics that leverage the set-cover problem and utilize layered auxiliary graphs. The simulation results indicate that in both the ILP and heuristics, the MC-RMSA with R-NC can achieve better performance on the maximum index of used FS' than that without. After that, we evaluate the heuristics in dynamic network provisioning. The results show that the MC-RMSA with R-NC can effectively improve the performance of all-optical multicast in EONs to reduce the blocking probability

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Performance Analysis of Multicast Traffic over Spectrum Elastic Optical Networks

Abstract: Abstract:We analyze the multicast performance over spectrum elastic optical networks. Results demonstrate the flexible spectrum allocation provides lower blocking probability for multicast compared to that in ITU-T grid-based WDM networks.

Cited by 51 publications

References 7 publications

Multicast service-oriented Virtual Network mapping over Elastic Optical Networks

Multicast service-oriented Virtual Network mapping over Elastic Optical Networks

Optimization in spectrum-sliced optical networks

Leveraging Light Forest With Rateless Network Coding to Design Efficient All-Optical Multicast Schemes for Elastic Optical Networks

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