Long-Reach Passive Optical Networks

Davey, R.P.; Grossman, Daniel B.; Rasztovits-Wiech, M.; Payne, David B.; Nesset, D.; Kelly, Anthony E.; Rafel, Albert; Appathurai, S.; Yang, Sheng-Hui

doi:10.1109/jlt.2008.2006991

Cited by 207 publications

(62 citation statements)

References 20 publications

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“…For every hour of the day, this distribution is characterized by a different λ according to a diurnal access pattern. 2 In this case, an intermediate node might receive traffic both from the root OLT and from the sub-OLT, so, to avoid collision of traffic from these different sources, a coordination protocol between the OLT and the sub-OLT is needed. A generalization of this scheme is possible also for multiple MSs and mesh links.…”

Section: A Connection Requestmentioning

confidence: 99%

“…Nowadays integrated metro/access architectures, where the access and metro infrastructure converge into a single domain, as in the case of Long Reach Passive Optical Networks (LR-PONs) [2], represent a promising candidate for nextgeneration cost-and energy-efficient network architectures for content delivery to users. They are typically multi-stage networks spanning up to few hundreds of kilometers and, because of their extended footprint, the effect of replicated servers in this context needs to be investigated.…”

Section: Introductionmentioning

confidence: 99%

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Using replicated video servers for VoD traffic offloading in integrated metro/access networks

Fratini

Savi

Verticale

et al. 2014

2014 IEEE International Conference on Communications (ICC)

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Abstract-Internet traffic is increasingly becoming a mediastreaming traffic. Especially, Video-on-Demand (VoD) services are pushing the demand for broadband connectivity to the Internet, and optical fiber technology is being deployed in the access network to keep up with such increasing demand. To provide a more scalable network architecture for video/content delivery, network operators are currently considering novel integrated metro/access networks which accommodate replicated video servers directly in their infrastructure. In such way, servers for VoD delivery are placed nearer to the end users, the core segment of the network is partially traffic offloaded, and the end users experience better performance in terms of QoS. In our work, we will evaluate the performance improvement of an integrated metro/access architecture for VoD delivery with replicated video servers considering different configurations in terms of number of replicated servers, meshing degree and adopted network technologies. We develop a network simulator in which replicas of video servers (called Metro Servers, or MSs) are deployed to meet the demand of VoD traffic. In the result section we compare the performance of the various configurations and discuss which are the minimum requirements to minimize blocking of the VoD requests.

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Section: A Connection Requestmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Using replicated video servers for VoD traffic offloading in integrated metro/access networks

Fratini

Savi

Verticale

et al. 2014

2014 IEEE International Conference on Communications (ICC)

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“…The width of these bands is something of a challenge to provide a uniform gain across. More importantly, the amplified spontaneous emission (ASE) of the amplifier is proportional to the band width, and with practical amplifiers the ASE power can rival that of the signal [12]. This large ASE reduces the extinction ratio of the signal, which can have some impact on the operation of some OLT receivers.…”

Section: Optical Amplifier Based Reach Extendersmentioning

confidence: 99%

Trends in Standardization of Optical Access Networks in ITU-T

Effenberger

Kani

2010

IEICE Trans. Commun.

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“…Integrated metro/access architectures, where the access and metro infrastructure converge into a single domain (as in the case of Long Reach Passive Optical Networks (LR-PONs) [6]) represent a promising candidate for next-generation cost-and energy-efficient network architectures for content delivery to users [7]. They are typically multi-stage networks spanning up to few hundreds of kilometers.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of video server replication in metro/access networks

et al. 2015

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Internet traffic is increasingly becoming a media-streaming traffic. Especially, Video-on-Demand (VoD) services are pushing the demand for broadband connectivity to the Internet, and optical fiber technology is being deployed in the access network to keep up with such increasing demand. To provide a more scalable network architecture for video delivery, network operators are currently considering novel metro/access network architectures which can accommodate replicated video servers directly in their infrastructure. When servers for VoD delivery are placed nearer to the end users, part of the traffic can be offloaded from the core segment of the network, and the end users can experience better Quality of Service (QoS). While the deployment of caching systems for traffic offloading has been studied in the core network, no work has already investigated the potential performance gains by replicating the content in the metro/access segment of the network, even closer to the users. In our work, we will compare the performance of video server replication in different metro/access network architectures, i.e. a metro ring architecture and a tree-based architecture, by considering both active and passive technologies. We will evaluate using both simulative and analytical methodologies how content providers could benefit from the deployment of replicas of video servers in terms of blocking probability of the VoD requests.

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Long-Reach Passive Optical Networks

Cited by 207 publications

References 20 publications

Using replicated video servers for VoD traffic offloading in integrated metro/access networks

Using replicated video servers for VoD traffic offloading in integrated metro/access networks

Trends in Standardization of Optical Access Networks in ITU-T

Performance evaluation of video server replication in metro/access networks

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