Interdomain dynamic wavelength routing in the next-generation translucent optical Internet

Yang, Xi; Ramamurthy, Byrav

doi:10.1364/jon.3.000169

Cited by 14 publications

(52 citation statements)

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“…For example, we can design all-optical sub-networks (optical islands) such that any route is physically feasible and the border switch is equipped with transponder interfaces, where the signal undergoes electrical conversion [46][47][48][49][50][51]. This design is simple and straightforward and can be used for static and dynamic optical networks, but is suboptimal.…”

Section: Pli-aware Dynamic Routing: Multi-domain and Multi-granmentioning

confidence: 99%

“…The requirement for routing in a MDMG network (in case of OEO border switches) is that the RWA process needs to know the extent of each domain and the granularities on each link within the domains. There are several reasons for this [46,47]: 1) When entering or leaving an all-optical domain, the regeneration process cleans up the optical impairments discussed in Section I. If the domain is not an alloptical domain, the routing process needs to compute a path which is physically feasible and also satisfies the bandwidth requirement considering the granularities of different links using some kind of constrained shortest path first (CSPF) algorithm.…”

Section: Pli-aware Dynamic Routing: Multi-domain and Multi-granmentioning

confidence: 99%

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Physical layer impairment aware routing (PLIAR) in WDM optical networks: issues and challenges

Saradhi

Subramaniam

2009

IEEE Commun. Surv. Tutorials

149

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Abstract-In WDM optical networks, the physical layer impairments (PLIs) and their significance depend on network type-opaque, translucent, or transparent; the reach-access, metro, or core/long-haul; the number and type of network elements-fiber, wavelengths, amplifiers, switching elements, etc.; and the type of applications-real-time, non-real time, missioncritical, etc. In transparent optical networks, PLIs incurred by non-ideal optical transmission media accumulate along an optical path, and the overall effect determines the feasibility of the lightpaths. If the received signal quality is not within the receiver sensitivity threshold, the receiver may not be able to correctly detect the optical signal and this may result in high bit-error rates. Hence, it is important to understand various PLIs and their effect on optical feasibility, analytical models, and monitoring and mitigation techniques. Introducing optical transparency in the physical layer on one hand leads to a dynamic, flexible optical layer with the possibility of adding intelligence such as optical performance monitoring, fault management, etc. On the other hand, transparency reduces the possibility of client layer interaction with the optical layer at intermediate nodes along the path. This has an impact on network design, planning, control, and management.Hence, it is important to understand the techniques that provide PLI information to the control plane protocols and that use this information efficiently to compute feasible routes and wavelengths. The purpose of this article is to provide a comprehensive survey of various PLIs, their effects, and the available modeling and mitigation techniques. We then present a comprehensive survey of various PLI-aware network design techniques, regenerator placement algorithms, routing and wavelength assignment algorithms, and PLI-aware failure recovery algorithms. Furthermore, we identify several important research issues that need to be addressed to realize dynamically reconfigurable next-generation optical networks. We also argue the need for PLI-aware control plane protocol extensions and present several interesting issues that need to be considered in order for these extensions to be deployed in real-world networks.Index Terms-Wavelength division multiplexing, wavelengthrouted optical networks, routing and wavelength assignment, optical performance monitoring, optical layer service level agreements, transmission impairments, quality of transmission, physical layer impairment aware routing, impairment constraintbased routing, regenerator placement algorithms, physical layer impairment aware control plane, GMPLS-based WDM networks, and IP over WDM networks.

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Section: Pli-aware Dynamic Routing: Multi-domain and Multi-granmentioning

confidence: 99%

Section: Pli-aware Dynamic Routing: Multi-domain and Multi-granmentioning

confidence: 99%

Physical layer impairment aware routing (PLIAR) in WDM optical networks: issues and challenges

Saradhi

Subramaniam

2009

IEEE Commun. Surv. Tutorials

149

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“…In practice, various components (e.g., OEO converter) are also required in addition to the optical amplifier to overcome physical impairments (e.g., noise and disper-sion) [11]. In this paper, however, we simply try to minimize the number of wavebands that are actually used because the number of these components required depends on the number of wave-bands actually used.…”

Section: Objective Functionmentioning

confidence: 99%

Design of Logical Topology with Effective Waveband Usage in IP-over-WDM Networks

2006

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“…For interdomain routing in optical networks, the BGP/GMPLS solution has been proposed [30]. We also proposed an interdomain routing solution from an algorithmic perspective in [41]. All these enhancements can also be used for disseminating and updating states of regeneration and optical links in translucent optical networks.…”

Section: • Advertisement and Discovery Of Regeneration Resourcementioning

confidence: 99%

“…This study is devoted to addressing the intradomain routing problem, in which we take into consideration optical-layer constraints as well as allocation of regeneration resources. By leaving the complex local routing constraints and computation to an intradomain routing algorithm, the interdomain algorithm only needs to concatenate those local routes into lightpaths at the domain boundary, and hence can be made simple and carried out "on-the-fly" [41].…”

Section: A Problem Statementmentioning

confidence: 99%

Dynamic routing in translucent WDM optical networks: the intradomain case

Yang

Ramamurthy

2005

J. Lightwave Technol.

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Abstract-Translucent wavelength-division multiplexing optical networks use sparse placement of regenerators to overcome physical impairments and wavelength contention introduced by fully transparent networks, and achieve a performance close to fully opaque networks at a much less cost. In previous studies, we addressed the placement of regenerators based on static schemes, allowing for only a limited number of regenerators at fixed locations. This paper furthers those studies by proposing a dynamic resource allocation and dynamic routing scheme to operate translucent networks. This scheme is realized through dynamically sharing regeneration resources, including transmitters, receivers, and electronic interfaces, between regeneration and access functions under a multidomain hierarchical translucent network model. An intradomain routing algorithm, which takes into consideration optical-layer constraints as well as dynamic allocation of regeneration resources, is developed to address the problem of translucent dynamic routing in a single routing domain. Network performance in terms of blocking probability, resource utilization, and running times under different resource allocation and routing schemes is measured through simulation experiments.Index Terms-Dynamic routing, physical impairments, regeneration, routing and wavelength assignment (RWA), signal quality constraints, translucent optical network, wavelength-division multiplexing (WDM).

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Interdomain dynamic wavelength routing in the next-generation translucent optical Internet

Cited by 14 publications

References 0 publications

Physical layer impairment aware routing (PLIAR) in WDM optical networks: issues and challenges

Physical layer impairment aware routing (PLIAR) in WDM optical networks: issues and challenges

Design of Logical Topology with Effective Waveband Usage in IP-over-WDM Networks

Dynamic routing in translucent WDM optical networks: the intradomain case

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