Highly reliable and economical WDM ring with optical self-healing and 1:N wavelength protection

Uehara, Daisuke

doi:10.1049/cp:19971583

Cited by 7 publications

(3 citation statements)

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“… introduced a traffic model that estimates traffic demands and applications traffic growth. It then converts the estimated amount of traffic to working capacity in long‐haul Metropolitan optical networks . Most of the developed approaches for resource dimensioning in communication networks are based on optimization models that aim to minimize the total cost of planning and allocation network resources while guaranteeing one or more QoS parameters (e.g.…”

Section: Related Workmentioning

confidence: 99%

A framework for resource dimensioning in GPON access networks

Alshaer

Shubair

Alyafei³

2011

Int J Network Mgmt

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SUMMARY In gigabit passive optical networks (GPONs), the ports of the optical line terminal (OLT) support passive optical networks (PONs). An optical split ratio supported on an OLT chassis determines the number of optical network units (ONUs) which can share PON link capacity. Generally, network planners tend to do dimensioning for PON link capacity (OLT port) based on the number of subscribers and their type (i.e. residential or business). Although this dimensioning approach is simple, it does not guarantee a selection of optical split ratio which can optimally allocate bandwidth to end‐subscribers. In this paper, we develop an integrated mathematical framework for optimally dimensioning resources in an GPON access network, namely OLT capacity. This framework comprises three resource‐dimensioning approaches which are based on user requirements: GPON link utilization and capacity optimization. Our mathematical framework has been integrated into software for GPON resource dimensioning, which we have developed to evaluate the support and performance of services in GPON access networks. Copyright © 2011 John Wiley & Sons, Ltd.

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Section: Related Workmentioning

confidence: 99%

A framework for resource dimensioning in GPON access networks

Alshaer

Shubair

Alyafei³

2011

Int J Network Mgmt

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“…To reduce the additional cost introduced by the backup equipments, systems such as 1 :N protection has been proposed by [2,3], in which a shared protection channel can be put into service to replace an invalid working channel in case of working channel failure.…”

Section: Introductionmentioning

confidence: 99%

<title>M:N protection scheme and OADM implementation in WDM optical transport networks</title>

Zong

Zhang

et al. 2000

SPIE Proceedings

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“…SONET and SDH networks are generally deployed as a ring topology [45] due to its high degree of network survivability [46]. There are three choices available for ring based protection [47][48][49][50][51][52][53][54] Because half of the capacity in each fiber is reserved for protection, the redundancy of ring protection approaches is at least 100%. Thus, the drawback of ring protection approaches is the inefficient usage of the expensive bandwidth resources of the network.…”

Section: Ring Based Approachesmentioning

confidence: 99%

Design and analysis of p-cycle-based fault-restorable optical networks with multicast capability

Zhang¹

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With recent advancement in optical transmission technology, WDM networks are able to offer huge capacity to meet the exponentially increasing demand. However, because network failures are capricious, without an efficient and fast recovery mechanism, they can cause huge data loss and therefore lead to severe disruption to network services and calamitous loss to end users. Hence, survivability is crucial to WDM networks carrying huge amount of unicast and multicast traffic. Compared with unicast traffic, multicast traffic suffers even more in a network failure. If a link/node in a multicast session fails, the traffic to all the downstream destinations of the failed link/node will be affected as well. In the past, extensive research has been directed to unicast traffic protection, due to its predominance. Recently, due to the rapid growth of multicast applications, such as video-conferencing, high definition television (HDTV), distance learning, multi-player on-line gaming, and so on, the problem of multicast traffic protection has started to draw more and more research interests. To our best knowledge, the preconfigured protection cycle (p-cycle) based approaches, which have been intensively studied for unicast traffic protection, have not been investigated for multicast traffic protection yet. Thus, motivated by the impact of the network failures to the optical multicast traffic and the merits of p-cycles, this thesis focuses on development and investigation of p-cycle based protection approaches for optical multicast traffic protection. The link-protecting p-cycle based approach for multicast traffic protection against link failure is analyzed first. The link protecting p-cycle based protection approach is shown to offer much better performance, compared with all other approaches. In particular, the joint optimization algorithm of p-cycle based link protection proposed achieves the best capacity efficiency among all algorithms for link failure recovery of static multicast traffic. For link

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Highly reliable and economical WDM ring with optical self-healing and 1:N wavelength protection

Cited by 7 publications

References 0 publications

A framework for resource dimensioning in GPON access networks

A framework for resource dimensioning in GPON access networks

<title>M:N protection scheme and OADM implementation in WDM optical transport networks</title>

Design and analysis of p-cycle-based fault-restorable optical networks with multicast capability

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