Impact of mesh topology in cost reduction of survivable hybrid WDM-TDM PON networks

Truong, Dieu Linh; Thuan, Phan; Hoa, Nguyen Thanh; Duong, Huy Quang

doi:10.1145/2350716.2350741

Cited by 2 publications

(2 citation statements)

References 12 publications

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“…Papers [7][8] propose some new resilient architectures where fiber rings interconnect several PONs to the CO, offering protection of the network part shared by many customers. In Paper [9] splitting points are interconnected by a mesh fiber infrastructure, reducing the fiber deployment cost and allowing multiple paths from a splitting point to the respective optical line terminal (OLT) at the CO. In [4], two resilience schemes are proposed for protecting the shared part of the access network, but no cost study is presented.…”

Section: Introductionmentioning

confidence: 99%

Toward reliable hybrid WDM/TDM passive optical networks

et al. 2014

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Individual users and enterprises are increasingly relying on the access to internet services and cannot accept long interruption time as easily as before. Moreover, the main characteristics of next generation optical access (NGOA) networks, such as long reach and large number of users per feeder line, turn the network reliability to an important design parameter to offer uninterrupted service delivery. In this regard, protection mechanisms become one of the crucial aspects that need to be considered in the design process of access networks. On the other hand, it should be noted that not all the users can afford to pay a high extra cost for protection and hence it is important to provide resilience in a costefficient way.A passive optical network (PON) combining wavelength division multiplexing (WDM) and time division multiplexing (TDM) technologies, referred to as hybrid WDM/TDM PON or HPON, is one of the most promising candidates for NGOA networks due to its ability to serve a large number of subscribers and to offer a high capacity per user. For these reasons in this paper, we propose HPON architecture offering different degrees of resilience depending on the user profiles, i.e. partial and full protection for residential and business access, respectively. Besides, the investment cost of providing resilience for the proposed schemes is investigated considering various protection upgrade road maps.Our results confirm that protecting the shared part of network with a large number of users is required in order to keep the failure impact at an acceptable level, with less than 5% increase of the investment cost compared to the unprotected case. Meanwhile, the proposed end-to-end protection for the business users considerably reduces the risk of service interruption for this kind of demanding users without a need for duplicating the deployment cost of an unprotected connection. Furthermore, a sensitivity analysis is performed to investigate the impact of changes in business user percentage and protection upgrade time on the deployment cost. The results may be used as an advice for a costefficient deployment of reliable fiber access networks.

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Section: Introductionmentioning

confidence: 99%

Toward reliable hybrid WDM/TDM passive optical networks

et al. 2014

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“…De esta forma, en el acceso se encuentra la tecnología PON (por sus siglas del inglés Passive Optical Network) que permite a los operadores ofrecer servicios de fibra hasta el hogar (Fiber to the home, FTTH). En [1], se proponen arquitecturas híbridas que emplean TDM y WDM (Multiplexación por división de tiempo con multiplexación por división en la longitud de onda) en la llamada arquitectura TDM-PON/WDM-PON, como alternativas de migración y escalamiento, procurando tener el mínimo costo en [2] y ofreciendo un gran ancho de banda comparado con las tecnologías actuales HFC (Hybrid Fiber Coaxial) y DSL (Digital Subscriber Line).…”

Section: Introductionunclassified

Análisis de los efectos dispersivos y no lineales de un canal óptico empleando métodos numéricos

Peralta

Simbaña

Fernández

2014

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En este documento, presentamos el modelado de un canal de fibra óptica mediante la resolución de la Ecuación No Lineal de Schrödinger (NLSE). Se presentan las dos formas de solución para la NLSE: la forma analítica y la forma numérica empleando el método SSF (Split–Step Fourier Transform). En la simulación se consideran efectos lineales como la dispersión cromática y los efectos no lineales. Uno de los efectos no lineal es el efecto Kerr, del que se derivan los efectos de auto modulación fase (Self Phase Modulation, SPM) y modulación de fase cruzada (Cross Phase Modulation, XPM). Los métodos de solución son empleados para simular y visualizar los efectos de propagación a través de la fibra óptica. Se analizan los efectos de propagación para un escenario de red de acceso óptica con fibra mono–modo estándar (Single Mode Fiber, SMF), con longitudes de fibra de 20 y 40 km y tasas de bits entre 1,25 y 100 Gbps. De otro lado, son presentados los fenómenos no lineales como dispersión estimulada de Raman (Stimulated Raman Scattering, SRS) y dispersión estimulada de Brillouin (Stimulated Brillouin Scattering, SBS). Se presentan las ecuaciones para modelar SRS. Se presentan resultados de simulación de la amplificación Raman en un escenario seleccionado.

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Impact of mesh topology in cost reduction of survivable hybrid WDM-TDM PON networks

Cited by 2 publications

References 12 publications

Toward reliable hybrid WDM/TDM passive optical networks

Toward reliable hybrid WDM/TDM passive optical networks

Análisis de los efectos dispersivos y no lineales de un canal óptico empleando métodos numéricos

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