Separate wavelength pools for multiple-class optical channel provisioning

Andriolli, N.; Jakab, T.; Valcarenghi, L.; Castoldi, P.

doi:10.1109/netwks.2004.241154

Cited by 9 publications

(4 citation statements)

References 9 publications

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“…When there are different traffic classes to be supported in optical channel provisioning strategies, it is a general problem how to protect the premium class traffic from the uncontrolled competition with the low priority traffic. Separate Wavelength Pool strategy gives a simple and effective solution for this problem [5]. The available wavelength pool is separated in SWAP, the first pool serves to allocate working connections for premium traffic only, and the second pool is for SRLG-based shared spare capacity oriented restoration routes for premium class traffic and for working routes of low priority pre-emptable traffic.…”

Section: The Swap Strategy and Some Ilp Model For Its Evaluationmentioning

confidence: 99%

“…Minimum disjoint paths are calculated to the fixed working ones for the premium traffic, and the spare capacities allocation is based on to the Shared Risk Link Groups (SRLG) set up according to the working routes. The calculation of spare capacities are performed according to formulas (4) and (5) '…”

Section: The Swap Strategy and Some Ilp Model For Its Evaluationmentioning

confidence: 99%

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ILP Based Evaluation of Separate Wavelength Pool (Swap) Strategy

Lakatos

2005

Optical Networks and Technologies

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The paper proposes a general approach to support the analysis and evaluation of dynamic routing and wavelength assignment strategies applicable in advanced optical networks. Some ILP based models are introduced to apply the proposed analysis support for the evaluation of Separate Wavelength Pool strategy. Results from a small network example are described and analyzed to validate the proposed ILP models in one hand and to highlight the advantages of the shared capacity related resilience and the preemption techniques applicable in advanced optical networks on the other hand.

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Section: The Swap Strategy and Some Ilp Model For Its Evaluationmentioning

confidence: 99%

Section: The Swap Strategy and Some Ilp Model For Its Evaluationmentioning

confidence: 99%

ILP Based Evaluation of Separate Wavelength Pool (Swap) Strategy

Lakatos

2005

Optical Networks and Technologies

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“…Uma maneira de se diferenciar o atendimento de requisic ¸ões é segregar os recursos para cada classe [8] [9]. Esta política de diferenciac ¸ão pode melhorar o atendimento do tráfego de uma classe de maior prioridade.…”

Section: B Segregac ¸ãO De Recursosunclassified

Compartilhamento Parcial de Banda entre Usuários Não-Cooperativos

Savasini¹,

Quitério²,

Waldman³

2005

Anais Do XXII Simpósio Brasileiro De Telecomunicações

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“…On the one hand, providing different degrees of fault tolerance requires more complex resilience schemes; on the other hand, it often saves network resources. A common practice for saving network resources is to exploit idle (i.e., unutilized) high-class protection resources to transmit low-class traffic under failure-free network conditions [4]- [8]. Furthermore, in multilayer networks, spare resources allocated for protecting connections at one layer (e.g., the optical layer) can be shared by upper layer (e.g., the IP layer) resilience schemes, as in the common-pool approach [9], [10].…”

Section: Introductionmentioning

confidence: 99%

Idle Protection Capacity Reuse in Multiclass Optical Networks

Andriolli

Giorgetti

Valcarenghi

et al. 2007

J. Lightwave Technol.

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Optical networks carrying traffic belonging to different survivability classes must ensure not only the proper survivability differentiation but also the efficient network resource utilization. Current approaches improve network resource utilization by carrying low-class preemptable traffic along highclass spare resources, which are idle (i.e., unutilized) during failure-free conditions. In this paper, the proposed idle protection capacity reuse (IR) framework generalizes the practice of reutilizing idle spare resources to both failure-free and failure conditions. The IR framework is based on the idea of exploiting idle high-class lightpath protection resources not only for routing low-class lightpaths during the provisioning phase (i.e., provisioning-phase IR, P-IR) but also for dynamically restoring low-class lightpaths during the recovery phase (i.e., recovery-phase IR, R-IR). Both P-IR and R-IR have the potential to improve network utilization while providing multiclass lightpaths with the required survivability differentiation. The numerical evaluation shows that the utilization of R-IR in dynamic restoration results in an improved low-class lightpath survivability with respect to the utilization of stub release. Moreover, if P-IR and R-IR are alternatively exploited, then the former improves the provisioning performance, while the latter guarantees a higher survivability. In the end, if P-IR and R-IR are concurrently employed in the provisioning and in the dynamic restoration of two different low classes of lightpaths, respectively, an inherent survivability differentiation is achieved.

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Separate wavelength pools for multiple-class optical channel provisioning

Cited by 9 publications

References 9 publications

ILP Based Evaluation of Separate Wavelength Pool (Swap) Strategy

ILP Based Evaluation of Separate Wavelength Pool (Swap) Strategy

Compartilhamento Parcial de Banda entre Usuários Não-Cooperativos

Idle Protection Capacity Reuse in Multiclass Optical Networks

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