The minimum coincidence routing approach in wavelength-routed optical WDM networks

Masip-Bruin, X.; Germán, Martín; Castro, Alberto; Marín‐Tordera, Eva; Serral-Gracià, R.; López, Sergio Sánchez; Yannuzzi, M.; Gagliano, Roque; Grampín, Eduardo

doi:10.1109/lanoms.2009.5338795

Cited by 8 publications

(5 citation statements)

References 15 publications

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“…They show that limiting the number of hops for accepted connections effectively reduces overall blocking probability when the network load is high. However, it has a negative effect when the load is low [9].…”

Section: Challenges In the Wdm Routingmentioning

confidence: 99%

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A New Adaptive approach in Routing and Wavelength Assignment for Optical WDM Networks

Sarwade¹,

Bhosale²

2015

International Conference on Advances in Computing, Control and Networking - ACCN 2015

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The technology employed in fiber optic communication which multiplexes a number of optical carrier signals onto a single optical fiber by using different wavelengths of laser light is known as the wavelength-division multiplexing (WDM). In optical WDM networks, when maximum flow algorithms are used for the Routing and wavelength assignment (RWA) problem, it optimizes the network resource usage. The existing routing methods rarely consider the current network load when making the routing decision. In order to overcome the drawbacks of the existing RWA methods, an adaptive routing and wavelength assignment protocol is proposed which is based on maximum flow and load balancing. In this work, Routing and Wavelength assignment is proposed adaptively based on the type of reservation request. When a network handles an advance reservation request, the routing is done using our Max-flow algorithm and wavelength assignment is done using an advance reservation algorithm. When the network handles an immediate reservation request, routing is done using the traffic load on each link on the paths and wavelength assignment is done using an immediate reservation algorithm.

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Section: Challenges In the Wdm Routingmentioning

confidence: 99%

“…2. Distinct wavelength constraint: All the light paths within a link must be assigned different wavelengths [9]. In this paper, we propose to develop an efficient wavelength assignment algorithm in addition to the maximum flow based routing algorithm developed earlier [12].…”

Section: Proposed Solution Wavelength Assignment In Wdm Networkmentioning

confidence: 99%

A New Adaptive approach in Routing and Wavelength Assignment for Optical WDM Networks

Sarwade¹,

Bhosale²

2015

International Conference on Advances in Computing, Control and Networking - ACCN 2015

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“…Comparisons are made between the accuracy of the blockage probability for various traffic classifications and patterns [18]. According to [19], sparse partial WCs only need 2.4% converters under various load circumstances. Numerous scenarios are considered in the study of adaptive alternate routing [20].…”

Section: Literature Surveymentioning

confidence: 99%

Wavelength Assignment Techniques with Converters for All Optical Networks (AONs)

Franklin

Sen

2022

AJEAT

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We present an optical routing and wavelength assignment (RWA) technique for the best placement of the wavelength converters. The wavelength converter placement was considered independently at the complete nodes and partial nodes. In comparison to existing approaches, our technique performs better and requires fewer wavelength converters to get the required performance. As much as 7%, the likelihood of blocking is decreased. The study also demonstrates that the top four nodes have the biggest influence over the blocking performance of the network. It is clear that placing the converters in the right location is just as crucial to improving performance as simply adding more converters.

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“…Architecture of control plane performing the route and wavelength selection is also discussed [14]. There are many possible solutions to the RWA problem [15]. In [16], Physical Level Impairment (PLI) aware RWA problem is also surveyed, and many combinations of Routing, Wavelength Assignment, and Impairment Verification processes are presented.…”

Section: A Routing and Wavelength Assignmentmentioning

confidence: 99%

Multi-tiers route design coordinating QoS-specific K shortest paths over optical network

Tode

Takada

Tanigawa

2015

2015 IEEE International Conference on Communication Workshop (ICCW)

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In the Wavelength Division Multiplexing (WDM) based optical circuit switching network, it takes longer time to set up the intermediate optical cross-connecting devices on the route. Thus, pre-computed routing approaches are desirable to instantly set up the connection. Most of their research works are based on the K Shortest Path (KSP) algorithm or it's variants considering route disjointness, because of load balancing effect in network, its simplicity, and quick response caused by heuristic approach. However, it essentially remains some issues to be solved, especially on the capability for various QoS support and fairer load balancing. In particular, the set of K shortest paths independently selected between any two nodes is insufficient for entire network load balancing. Specifically, sequential selection of the K routes for each source-destination (S-D) pair causes the unfairness and unbalance in network load among all S-D pairs. In the paper, to tackle the above problems, we propose multi-tiers route design method, which provides more enhanced load balancing by selecting QoS specific multiple routes for each node pair, coordinating with the routes for other node pairs. The proposed method is not the improvement of the KSP algorithm and it's variants themselves, but the framework to find a limited number (K') of adequate paths from the K (K' ≤ K) routes precomputed by KSP based algorithms for each S-D pair and each QoS level, taking spatial relationship between routes into account. Thus, the proposed method has complementary relationship with the KSP based algorithms themselves.

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The minimum coincidence routing approach in wavelength-routed optical WDM networks

Cited by 8 publications

References 15 publications

A New Adaptive approach in Routing and Wavelength Assignment for Optical WDM Networks

A New Adaptive approach in Routing and Wavelength Assignment for Optical WDM Networks

Wavelength Assignment Techniques with Converters for All Optical Networks (AONs)

Multi-tiers route design coordinating QoS-specific K shortest paths over optical network

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