Service-specific resource allocation in WDM networks with quality constraints

Jukan, Admela; As, Harmen R. van

doi:10.1109/49.887924

Cited by 39 publications

(23 citation statements)

References 16 publications

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“…More specifically, the related issues are: (1) What is the best performance of light-path assessments with partial information? (2) What is the trade-off between the performance and the complexity (i.e., the amount) of network management information?…”

Section: Isp B (Subnet B)mentioning

confidence: 99%

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Network management information for light-path assessment: trade-off between performance and complexity

Liu

Chan³

2003

IEEE INFOCOM 2003. Twenty-Second Annual Joint Conference of the IEEE Computer and Communications Societies (IEEE Cat. No.03CH37

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Abstract--We investigate network management information for light-path assessment to dynamically set up end-to-end lightpaths across administrative domains. Our focus is on invetigating what performance can be possibly achieved given partial management information, and whether a small loss in performance can trade off with a large saving in management information.The partial information we consider includes aggregated characterization of subnetworks, and local states from wavelength converters. We cast the light-path assessment as a decision problem, and define the performance as the probability of an erroneous decision. We apply the decision theory to show that the optimal performance using the partial information is the Bayes probability of error. We derive an upper bound of the Bayes error in terms of the blocking probability. We evaluate the upper bound using both independent and dependent models of wavelength usage. Our study shows that there exits a ``threshold effect'': The Bayes error decreases exponentially to 0 with respect to the load when the load is either below or above a threshold value; and is non-negligible when the load is in a small duration around the threshold. This suggests that a small percentage of error decisions can trade off with a large saving in management information.Index terms--Partial management information, lightpath assessment, decision theory, Bayes rule, blocking probability. I. INTRODUCTIONDynamically assessing the quality of light-paths is important to many applications in wavelength-routed optical networks such as on-demand light-path provisioning, protection and restoration. As the light-path quality is a complex measure [1], this work considers a simple quality, which is the wavelength availability on a candidate light-path. The assessment then becomes determining availability of wavelengths for supporting an end-to-end call based on given management information.Complete or partial network management information can be used to assess the wavelength availability on a light-path. Complete information corresponds to the detailed states of wavelength usage, i.e. "which wavelengths are used at which links of a network'', when there is no wavelengths converters in the network. Wavelength converters can reduce state information due to their ability to relax the wavelength continuity constraint. However, it is expected that wavelength converters remain expensive and are thus used mostly on the boundaries of sub-networks [2]. Therefore, generally complete state information involves the detailed wavelength occupancy within a subnet. Partial information includes aggregated load and topology information at each subnet, and local states, e.g., the total number of wavelengths used at wavelength converters.Providing state information is a basic functionality of network management. Traditional network management systems intend to obtain as complete state information as possible [3]. But future IP-WDM networks may have hundreds of links with each link supporting hundreds of wavelengths [...

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Section: Isp B (Subnet B)mentioning

confidence: 99%

“…As the light-path quality is a complex measure [1], this work considers a simple quality, which is the wavelength availability on a candidate light-path. The assessment then becomes determining availability of wavelengths for supporting an end-to-end call based on given management information.…”

Section: Introductionmentioning

confidence: 99%

Network management information for light-path assessment: trade-off between performance and complexity

Liu

Chan³

2003

IEEE INFOCOM 2003. Twenty-Second Annual Joint Conference of the IEEE Computer and Communications Societies (IEEE Cat. No.03CH37

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“…Especially, service differentiation in terms of blocking probability has been studied and several methods have been proposed [4][5][6][7][8]. If the number of available wavelengths for each class is pre-determined so that a higher priority class can utilize more wavelengths than lower classes [9], service differentiation in terms of blocking probability can be provided simply.…”

Section: Introductionmentioning

confidence: 99%

MDP-based lightpath establishment for service differentiation in all-optical WDM networks with wavelength conversion capability

Tachibana

Koyanagi

2010

Photon Netw Commun

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In this paper, we propose a service differentiation method for lightpath establishment in all-optical WDM networks. The proposed method derives the optimal lightpath establishment policy for each serve class based on a Markov Decision Process (MDP). The optimal policy considered here is to provide service differentiation for lightpath establishment and to utilize wavelengths effectively. Here, we focus on two cases for wavelength conversion capability; full-range wavelength conversion and limited-range wavelength conversion. For full-range wavelength conversion, the number of lightpaths for each class is considered as a state of MDP. On the other hand, for limited-range wavelength conversion, the service class of lightpath that has been established with each output wavelength is considered as the state. Based on these states, we derive the optimal policy for lightpath establishment. In both cases, we evaluate the performance of the proposed method with simulation. In numerical examples, we show that our proposed method can provide service differentiation and use wavelengths effectively regardless of wavelength conversion capability.

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“…architectures and optical technologies, efficient and technology-independent algorithms and protocols for dynamic and service-differentiated wavelength circuit provisioning will playa key role [1].…”

Section: Introductionmentioning

confidence: 99%

Distributed discovery of wavelength paths in multiservice WDM networks

Franzl

Jukan

2002

IFIP Advances in Information and Communication Technology

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Abstract:This work proposes a distributed method for wavelength channel provisioning in multi-service WDM networks, where subject to constraints on wavelength routing such as transmission quality or resource availability, the best of the multiple feasible paths can be found. The numerical examples and simulation study of multi-service wavelength-routed networks under dynarnic traffic conditions have shown the applicability of our methods for the optical network services yet to emerge.

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Service-specific resource allocation in WDM networks with quality constraints

Cited by 39 publications

References 16 publications

Network management information for light-path assessment: trade-off between performance and complexity

Network management information for light-path assessment: trade-off between performance and complexity

MDP-based lightpath establishment for service differentiation in all-optical WDM networks with wavelength conversion capability

Distributed discovery of wavelength paths in multiservice WDM networks

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