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1 to 19 of 19 results
  • GPON redundancy eraser algorithm for long-reach extension

     Segarra Mullerat, Josep; Sales Zaragoza, Vicente; Prat Goma, Josep
    International Conference on Transparent Optical Networks
    Presentation's date: 2013-06
    Presentation of work at congresses

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    Long-Reach (LR) extension is a promising scheme for future next generation access networks, enabling less Central Offices (COs) in the field and a large number of customers in the access/metro area. Because of the large propagation time between ONUs and OLT, inefficiency occurs in the Dynamic Bandwidth Allocation (DBA) protocols. To solve this drawback the GPON Redundancy Eraser Algorithm for Long-Reach (GREAL) is proposed, removing the redundancy caused by scheduling intervals (SIs) smaller than the Round-Trip-Time (RTT), while providing also multi-service QoS. This algorithm is independent of the SIs and uses real data queuing information without prediction, achieving a great enhancement in bandwidth utilization

  • Planning and designing FTTH networks: elements, tools and practical issues

     Segarra Mullerat, Josep; Sales Zaragoza, Vicente; Prat Goma, Josep
    International Conference on Transparent Optical Networks
    Presentation's date: 2012
    Presentation of work at congresses

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    Fiber-To-The Home (FTTH) provides the offered and new broadband services. Now it is deployed massively worldwide with Passive Optical Networks (PONs), being the EPON and GPON standards the most used. In this paper we consider solutions for planning and designing such optical fiber access networks from the point of view of an incumbent operator; taking into account components administration, mapping tools, design applications and automation resources; therefore, managing infrastructures, materials, geography, houses,buildings and users databases. The networks will be dynamic, so the proposed designs and utilities must also be active to reach thousands of passed homes and to cover the life-cycle of the networks and not only the initial built.

    Fiber-To-The Home (FTTH) provides the offered and new broadband services. Now it is deployed massively worldwide with Passive Optical Networks (PONs), being the EPON and GPON standards the most used. In this paper we consider solutions for planning and designing such optical fiber access networks from the point of view of an incumbent operator; taking into account components administration, mapping tools, design applications and automation resources; therefore, managing infrastructures, materials, geography, houses,buildings and users databases. The networks will be dynamic, so the proposed designs and utilities must also be active to reach thousands of passed homes and to cover the life-cycle of the networks and not only the initial built.

  • Access services availability and traffic forecast in PON deployment

     Segarra Mullerat, Josep; Sales Zaragoza, Vicente; Prat Goma, Josep
    International Conference on Transparent Optical Networks
    Presentation's date: 2011-06
    Presentation of work at congresses

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    In this paper, offered and new broadband services for residential customers are considered in Passive Optical Networks (PONs). The user bit rates together with QoS requirements are evaluated for the availability of the services in the PONs, according to the number of users and the network bit rates deployed. Traffic forecast is also estimated for the next future access services evolution and for the dimensioning of the optical access networks, taking into account the required bit rates and the number of users involved.

  • GPON scheduling disciplines under multi-service bursty traffic and long-reach approach

     Segarra Mullerat, Josep; Sales Zaragoza, Vicente; Prat Goma, Josep
    International Conference on Transparent Optical Networks
    Presentation's date: 2010-07
    Presentation of work at congresses

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    Gigabit-capable PON (GPON) is the optical access standard being deployed by many incumbent operators, but the Dynamic Bandwidth Allocation (DBA) algorithm for multi-service Quality of Service (QoS) is not specified; hence, to provide QoS we propose fair DBA scheduling disciplines adapted to bursty traffic. Moreover, Long- Reach (LR) access is a promising scheme for future next generation access networks, enabling for a large number of customers in the access/metro area. We improve our scheduling disciplines to enhance the transmission efficiency in the LR approach by using a traffic prediction.

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    SARDANA: an all-optical access-metro WDM/TDM-PON  Open access

     Prat Goma, Josep; Segarra Mullerat, Josep; Sales Zaragoza, Vicente; Lazaro Villa, Jose Antonio; Chanclou, Philippe; Soila, Risto; Teixeira, A.; TosiBeleffi, Giorgio M; Tomkos, Ioannis; Spirou, S
    Federation of Telecommunications Engineers of the European Union Congress
    Presentation's date: 2010-09
    Presentation of work at congresses

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    A new optical access network, named “Scalable Advanced Ring-based passive Dense Access Network Architecture” (SARDANA), is presented. It transparently integrates WDM metro and TDM PON access technologies, implementing ring protection, 100 km reach and up to 1024 users served at 10 Gb/s, with passive highly-shared infrastructure. The introduced innovations are hybrid ring/tree WDM/TDM Passive Optical Network (PON) architecture; a resilient remote node (RN), which is distantly pumped from the Optical Line Terminal (OLT); and a reflective ONU (Optical Network Unit); as well as an enhanced Medium Access Control (MAC) protocol.

  • Agile reconfigurable and traffic adapted all-optical access-metro networks

     Segarra Mullerat, Josep; Sales Zaragoza, Vicente; Prat Goma, Josep
    International Conference on Transparent Optical Networks
    Presentation's date: 2009-07
    Presentation of work at congresses

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    The emerging high bandwidth and on-demand user applications require improvements in capacity, configurability and resiliency in next generation optical access networks to incrementally expand on the basis of customers requirements. New architectures and technologies are needed to achieve also scalability and active traffic adaptation. In this article an all-optical merger of access and metro networks is proposed with the use of Reconfigurable Optical Add Drop Multiplexers (ROADMs) and Optical Burst Switching Multiplexers (OBSMs), which are new network elements multiplexing at optical burst level. The resulting novel network architectures, named the OBSWAMA network, are evaluated as an innovative solution to reach a flexible, dynamic and efficient solution for the aforementioned next generation optical access networks.

  • TECNICAS Y DISPOSITIVOS PAR AL ANUEVA GENERACION DE REDES DE ACESO POR FIBRA OPTICA

     Prat Goma, Josep; Segarra Mullerat, Josep; Sales Zaragoza, Vicente; Polo Querol, Victor Manuel; Fabrega Sanchez, Josep Maria; Santos Blanco, María Concepción; Lazaro Villa, Jose Antonio
    Participation in a competitive project

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  • A nesting ranging algorithm for a Hybrid WDM/TDM PON with colorless Reflective-ONUs under different distances OLT-ONUs

     Segarra Mullerat, Josep; Sales Zaragoza, Vicente; Prat Goma, Josep
    Photonic network communications
    Date of publication: 2008-08
    Journal article

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  • OLT Design Approach for Resilient Extended PON with OBS Dynamic Bandwidth Allocation Sharing the OLT Optical Resources

     Segarra Mullerat, Josep; Sales Zaragoza, Vicente; Prat Goma, Josep
    ICTON 2008 - 10th International Conference on Transparent Optical Networks
    Presentation of work at congresses

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  • An all-optical access-metro interface for hybrid WDM/TDM PON based on OBS

     Segarra Mullerat, Josep; Sales Zaragoza, Vicente; Prat Goma, Josep
    Journal of lightwave technology
    Date of publication: 2007-04
    Journal article

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  • Traffic Performance of an Access Hybrid WDM/TDM PON with Colorless Reflective-ONUs under Different Distances OLT-ONUs

     Segarra Mullerat, Josep; Sales Zaragoza, Vicente; Prat Goma, Josep
    9th International Conference on Transparent Optical Networks 2007
    Presentation of work at congresses

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  • Red De Acceso Avanzada En Anillo De Alta Densidad (RAAAD) - TEC2005-05160

     Prat Goma, Josep; Gené Bernaus, Joan M.; Junyent Giralt, Gabriel; Sales Zaragoza, Vicente; Segarra Mullerat, Josep; Santos Blanco, María Concepción; Polo Querol, Victor Manuel; Fernandez Canti, Rosa M.; Arellano Pinilla, Cristina; Bock Montero, Carlos; Omella, Mireia; Fabrega Sanchez, Josep Maria
    Participation in a competitive project

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  • Juegos cooperativos y conflictos de intereses. Teoría y práctica

     Carreras Escobar, Francisco; Llongueras Arola, Maria Dolors; Magaña Nieto, Antonio; Giménez Pradales, José Miguel; Puente Del Campo, Mª Albina; Freixas Bosch, Josep; Pons Navarro, Montserrat; Sales Zaragoza, Vicente
    Participation in a competitive project

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  • Queue management and priority scheduling disciplines for QoS control in Wavelength Routed OBS (WROBS) access networks

     Segarra Mullerat, Josep; Sales Zaragoza, Vicente; Prat Goma, Josep
    8th International Conference on Transparent Optical Networks
    Presentation of work at congresses

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  • Integrated IP/WDM Routing in GMPLS-Based Optical Networks

     Comellas Colome, Jaume; Prat Goma, Josep; Sales Zaragoza, Vicente; Junyent Giralt, Gabriel
    IEEE network
    Date of publication: 2003-03
    Journal article

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  • Redes Avanzadas de Fibra Óptica hasta el Hogar (RAFOH) - TIC2002-00053

     Prat Goma, Josep; Junyent Giralt, Gabriel; Gené Bernaus, Joan M.; Comellas Colome, Jaume; Sales Zaragoza, Vicente; Segarra Mullerat, Josep; Santos Blanco, María Concepción; Polo Querol, Victor Manuel; Soler Rocasalbas, Marçal
    Participation in a competitive project

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  • Dynamic ip/wdm grooming using gmpls traffic engineering functions

     Comellas Colome, Jaume; Prat Goma, Josep; Sales Zaragoza, Vicente; Junyent Giralt, Gabriel
    IEEE Emerging Telecommunication Technologies Conference
    Presentation of work at congresses

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  • Performance Monitor for All-Optical Networks based on Homodyne Spectroscopy

     Comellas Colome, Jaume; Prat Goma, Josep; Junyent Giralt, Gabriel; Sales Zaragoza, Vicente
    IEEE photonics technology letters
    Date of publication: 2000-11
    Journal article

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  • A Novel Methodology for Measuring Coherent Homowavelength Crosstalk in a Optical signal Supervisory system

     Rafel Porti, Alberto; Prat Goma, Josep; Sales Zaragoza, Vicente
    Proceedings of Optical Fiber Communication
    Presentation of work at congresses

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