Evolution of Optical Access Networks: Architectures and Capacity Upgrades

Kramer, Glen; Andrade, Marilet De; Roy, Rajesh; Chowdhury, Pulak

doi:10.1109/jproc.2011.2176690

Cited by 73 publications

(41 citation statements)

References 14 publications

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“…In order to obtain the delay in the wireless front end of our FiWi network, we have to average the sums of the nodal delays (39) with the queueing delay correction terms (40) whereby is the traffic intensity at node due to traffic flowing from source node to destination node .…”

Section: G Delay On Wmn Pathmentioning

confidence: 99%

FiWi Access Networks Based on Next-Generation PON and Gigabit-Class WLAN Technologies: A Capacity and Delay Analysis

Аурзада

Lévesque

Maier

et al. 2014

IEEE/ACM Trans. Networking

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Abstract-Current Gigabit-class passive optical networks (PONs) evolve into next-generation PONs, whereby high-speed Gb/s time division multiplexing (TDM) and long-reach wavelength-broadcasting/routing wavelength division multiplexing (WDM) PONs are promising near-term candidates. On the other hand, next-generation wireless local area networks (WLANs) based on frame aggregation techniques will leverage physical-layer enhancements, giving rise to Gigabit-class very high throughput (VHT) WLANs. In this paper, we develop an analytical framework for evaluating the capacity and delay performance of a wide range of routing algorithms in converged fiber-wireless (FiWi) broadband access networks based on different next-generation PONs and a Gigabit-class multiradio multichannel WLAN-mesh front end. Our framework is very flexible and incorporates arbitrary frame size distributions, traffic matrices, optical/wireless propagation delays, data rates, and fiber faults. We verify the accuracy of our probabilistic analysis by means of simulation for the wireless and wireless-optical-wireless operation modes of various FiWi network architectures under peer-to-peer, upstream, uniform, and nonuniform traffic scenarios. The results indicate that our proposed optimized FiWi routing algorithm (OFRA) outperforms minimum (wireless) hop and delay routing in terms of throughput for balanced and unbalanced traffic loads, at the expense of a slightly increased mean delay at small to medium traffic loads.Index Terms-Availability, fiber-wireless (FiWi) access networks, frame aggregation, integrated routing algorithms, next-generation passive optical networks (PONs), very high throughput wireless local area network (VHT WLAN).

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Section: G Delay On Wmn Pathmentioning

confidence: 99%

FiWi Access Networks Based on Next-Generation PON and Gigabit-Class WLAN Technologies: A Capacity and Delay Analysis

Аурзада

Lévesque

Maier

et al. 2014

IEEE/ACM Trans. Networking

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“…FTTH technology uses optical fibre to connect subscribers at their premises with two-way transmission speeds of up to 100 Mbps (Kramer, De Andrade, Roy, & Chowdhury, 2012). Continuing improvements in fibre-optic equipment are focused on increasing these speeds without replacing the deployed fibre, creating a "future proof NGN technology (Fibre to the Home Council Europe, 2012).…”

Section: Choice Of Ngn Technologiesmentioning

confidence: 99%

“…1 and 2 derive from deployment models used in previous studies to assess the costs in the rollout process of NGA networks (Coomonte et al, 2012;Feijóo, Gómez-Barroso, & Ramos, 2011). The FTTH architecture is congruent with technical models of fixed fibre-based access networks (Kramer et al, 2012) and main fibre cost-related studies (Analysys Mason, 2008Mason, , 2009. The architecture for the mobile network is based on the evolved UMTS Terrestrial Radio Access Network (e-UTRAN) (3GGPP, 2012;Dahlman et al, 2006).…”

Section: Network Architecture and Active Devicesmentioning

confidence: 99%

How much energy will your NGN consume? A model for energy consumption in next generation access networks: The case of Spain

Coomonte¹,

Feijóo²,

Ramos³

et al. 2013

Telecommunications Policy

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The contribution to global energy consumption of the information and communications technology (ICT) sector has increased considerably in the last decade, along with its growing relevance to the overall economy. This trend will continue due to the seemingly ever greater use of these technologies, with broadband data traffic generated by the usage of telecommunication networks as a primary component. In fact, in response to user demand, the telecommunications industry is initiating the deployment of next generation networks (NGNs). However, energy consumption is mostly absent from the debate on these deployments, in spite of the potential impact on both expenses and sustainability.[n addition, consumers are unaware of the energy impact of their choices in ultra-broadband services. This paper focuses on forecasting energy consumption in the access part of NGNs by modelling the combined effect of the deployment of two different ultra-broadband technologies (FTTH-GPON and LTE), the evolution of traffic per user, and the energy consumption in each of the networks and user devices. Conclusions are presented on the levels of energy consumption, their cost and the impact of different network design parameters. The effect of technological developments, techno-economic and policy decisions on energy consumption is highlighted. On the consumer side, practical figures and comparisons across technologies are provided. Although the paper focuses on Spain, the analysis can be extended to similar countries.

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“…Additionally, PONs present a relatively low-cost deployment and energy consumption when compared with other alternatives. Consequently, PONs have been already widely deployed, while Next-Generation PONs (NG-PONs) are regarded as the most promising solution for future broadband fiber-based access networks [2].…”

Section: Introductionmentioning

confidence: 99%

On the impact of software failures on time division multiplexed Passive Optical Networks dependability

Fernández

Stol

2014

2014 6th International Workshop on Reliable Networks Design and Modeling (RNDM)

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Abstract-Passive Optical Networks (PONs) are widely regarded as the best suited technology for deploying broadband access networks. As new services emerge, the dependability of PONs has become critical as end users expect access networks to be highly reliable. Although PONs dependability regarding hardware failures has been extensively studied, very little attention has been drawn to software failures in PONs. Chiefly, this paper aims at performing an exhaustive analysis of the effect of software failures in PONs dependability and failure-related costs. Additionally, hardware failures are also included for the sake of completeness and comparison. By applying Duane's model for reliability growth to current literature results, the PON software dependability is estimated as a function of the testing phase duration. Then, a Markov cost model, accounting for both hardware and software failures is developed and solved by means of Monte Carlo simulations. Hence, the effect of software failures in PONs asymptotic availability, failure impact and dependability-related costs is detailed; revealing to be of utmost importance. Moreover, how the testing process duration affects these three parameters is also pinpointed.

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Evolution of Optical Access Networks: Architectures and Capacity Upgrades

Cited by 73 publications

References 14 publications

FiWi Access Networks Based on Next-Generation PON and Gigabit-Class WLAN Technologies: A Capacity and Delay Analysis

FiWi Access Networks Based on Next-Generation PON and Gigabit-Class WLAN Technologies: A Capacity and Delay Analysis

How much energy will your NGN consume? A model for energy consumption in next generation access networks: The case of Spain

On the impact of software failures on time division multiplexed Passive Optical Networks dependability

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