Spectrum management in heterogeneous bandwidth networks

Wang, Rui; Mukherjee, B.

doi:10.1109/glocom.2012.6503558

Cited by 44 publications

(27 citation statements)

References 9 publications

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“…Taking this direction R. Wang et al [21] and W. Fadini et al [22] presented spectrum partitioning schemes in order to utilize the spectrum resources efficiently and manage the fragmentation issue; both are discussed later in the fragmentation subsection (Section VIII-A).…”

Section: Concept Of Elastic Optical Networkmentioning

confidence: 98%

“…To overcome this serious issue, R. Wang and B. Mukherjee [21] have presented a scheme that prevents bandwidth fragmentation without performing any connection rerouting. Typically, when connection requests with lower-bandwidth and higher-bandwidth are not separated during spectrum allocation, it is more likely that the higher-bandwidth connection requests are blocked.…”

Section: A Fragmentationmentioning

confidence: 99%

“…Table VI summarizes these different aspects, namely -fragmentation, modulation, quality-of-transmission, traffic grooming, survivability, energy saving, and networking cost reductions by SBVT. [14], [21], [22] Reactive [12], [14], [34], [36], [50], [56], [57] Modulation Online [60]- [63] Offline [14] Quality of transmission [62], [63] Traffic grooming [67], [71], [72], [91], [26], [73] Survivability Protection [81]- [84] Restoration [80], [86]- [90], [92] Energy saving [93], [97], [98] Networking cost caused by SBVT [25], [27] IX. EXPERIMENTAL DEMONSTRATIONS This section presents the experimental demonstrations that have tested the functionality of the elastic optical network.…”

Section: G Networking Cost Of Sbvtmentioning

confidence: 99%

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Routing and Spectrum Allocation in Elastic Optical Networks: A Tutorial

Chatterjee

Sarma

Oki

2015

IEEE Commun. Surv. Tutorials

566

240

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Flexgrid technology is now considered to be a promising solution for future high-speed network design. In this context, we need a tutorial that covers the key aspects of elastic optical networks. This tutorial paper starts with a brief introduction of the elastic optical network and its unique characteristics. The paper then moves to the architecture of the elastic optical network and its operation principle. To complete the discussion of network architecture, this paper focuses on the different node architectures, and compares their performance in terms of scalability and flexibility. Thereafter, this paper reviews and classifies routing and spectrum allocation (RSA) approaches including their pros and cons. Furthermore, various aspects, namely -fragmentation, modulation, quality-of-transmission, traffic grooming, survivability, energy saving, and networking cost related to RSA, are presented. Finally, the paper explores the experimental demonstrations that have tested the functionality of the elastic optical network, and follows that with the research challenges and open issues posed by flexible networks.Index Terms-Elastic optical networks, node architecture, spectrum management, routing and spectrum allocation, and sliceable bandwidth-variable transponder.

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Section: Concept Of Elastic Optical Networkmentioning

confidence: 98%

Section: A Fragmentationmentioning

confidence: 99%

Section: G Networking Cost Of Sbvtmentioning

confidence: 99%

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Routing and Spectrum Allocation in Elastic Optical Networks: A Tutorial

Chatterjee

Sarma

Oki

2015

IEEE Commun. Surv. Tutorials

566

240

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“…In [7], traffic aggregation is proposed to diminish fragmentation in WDM flex-grid networks. In [8], a procedure for matching spectrum fragmentation and bandwidth demands is introduced. The work in [9] introduces procedures to avoid and to ameliorate fragmentation when it occurs.…”

Section: Related Workmentioning

confidence: 99%

Fragmentation aware routing and spectrum assignment algorithm

Moura

Fonseca

Scaraficci

2014

2014 IEEE International Conference on Communications (ICC)

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In flex-grid (elastic) networks, the spectrum can be allocated at a much finer granularity than it can be allocated in WDM networks. However, the dynamic establishment and tear down of lightpaths yields to the fragmentation of the spectrum with consequent increase in blocking of requests for connection establishment. Therefore, it is of paramount importance that allocation decisions try to mitigate the fragmentation problem. In line with that, this paper introduces the Multigraph Shortest Path Algorithm for novel Routing and Spectrum Allocation (RSA) in elastic networks. Results indicate that the joint use of the new algorithm with proposed cost functions can produce bandwidth blocking ratio four orders of magnitude lower than existing RSA algorithms.

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“…Em [94] os autores apresentam uma proposta que evita a fragmentação do espectro sem a realização de alterações na rota da conexão. A proposta adota um esquema de controle de admissão preventiva com base no particionamento do espectro da demanda com o intuito de alcançar uma maior alocação de espectro.…”

Section: Fragmentação De Espectrounclassified

Potencializando a modulação adaptativa com roteamento em múltiplos saltos em redes ópticas elásticas

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Spectrum management in heterogeneous bandwidth networks

Cited by 44 publications

References 9 publications

Routing and Spectrum Allocation in Elastic Optical Networks: A Tutorial

Routing and Spectrum Allocation in Elastic Optical Networks: A Tutorial

Fragmentation aware routing and spectrum assignment algorithm

Potencializando a modulação adaptativa com roteamento em múltiplos saltos em redes ópticas elásticas

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