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  • 1. Battiti, R.
    et al.
    Lo Cigno, R.
    Sabel, M.
    Orava, Fredrik
    KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT. KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Pehrson, Björn
    KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT. KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Wireless LANs: From WarChalking to open access networks2005In: Mobile Networks and Applications , ISSN 1383-469X, E-ISSN 1572-8153, Vol. 10, no 3, p. 275-287Article in journal (Refereed)
    Abstract [en]

    This work discusses the evolution of W-LANs from their current status of wireless termination of LAN services to a possible global infrastructure where the access networks become open to multiple operators and a vehicle of a win-win scenario, where both users and operators benefit from the new network architecture. The idea of Open Access Networks (OANs) can go beyond wireless HotSpots and be generalized to a generic shared access infrastructure that fosters service operators competition and drastically reduces the cost of last mile coverage. The general concept of Open Access Networks is detailed, highlighting its difference with the more traditional model of vertical integration of the access network into the global service. About the OANs development, it is shown how to support the quick and smooth evolution of the infrastructure toward a widespread and reliable communication support. Business models are discussed by mentioning the different actors, the market organization and the different organization forms. The final part of the paper is devoted to technical challenges such as access control, security, privacy, roaming, resource exploitation and service differentiation. As an example of how to tackle these problems, we discuss a pricing technique devoted to resource management and billing support. In addition we present a simulation on how the OAN concept can speed-up the deployment of broadband access in a real case.

  • 2.
    Muchanga, Americo Francisco
    et al.
    KTH, School of Information and Communication Technology (ICT), Electronic, Computer and Software Systems, ECS.
    Wosinska, Lena
    KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT.
    Orava, Fredrik
    Haralson, Joanna
    Inter-domain routing in optical networks2005In: OPTICAL NETWORKS AND TECHNOLOGIES, 2005, Vol. 164, p. 263-270Conference paper (Refereed)
    Abstract [en]

    In this paper we present a mechanism for obtaining an abstraction of network topology in optical networks in order to compute an end-to-end lightpath across multiple domains.

  • 3.
    Muchanga, Americo
    et al.
    KTH, School of Information and Communication Technology (ICT), Electronic, Computer and Software Systems, ECS.
    Wosinska, Lena
    KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT.
    Orava, Fredrik
    KTH, School of Information and Communication Technology (ICT).
    Inter-layer communication for improving restoration time in optical networks2006In: Optical Fiber Communication Conference, 2006 and the 2006 National Fiber Optic Engineers Conference. OFC 2006, WASHINGTON: OPTICAL SOC AMERICA , 2006, p. 1455-1461Conference paper (Refereed)
    Abstract [en]

    The restoration time in high capacity optical networks has to be kept as short as possible in order to avoid a huge loss of data. This paper discusses several methods to improve restoration time in optical networks and we propose the use of error codes that will trigger immediately the appropriate layer recovery mechanism, which is the best to handle a given fault.

  • 4.
    Muchanga, Américo Francisco
    et al.
    KTH, School of Information and Communication Technology (ICT).
    Wosinska, Lena
    KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT.
    Orava, Fredrik
    KTH, School of Information and Communication Technology (ICT).
    Providing QoS in end to end Optical Networking. 2006Report (Other academic)
  • 5.
    Muchanga, Américo
    et al.
    KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT.
    Wosinska, Lena
    KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT.
    Orava, Fredrik
    KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT.
    Haralson, Joanna
    KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT.
    Requirements for interdomain routing in optical networks2005In: National Fiber Optic Engineers Conference (NFOEC) 2005, Optical Society of America, 2005Conference paper (Refereed)
    Abstract [en]

    In this paper we present a mechanism for obtaining an abstraction of network topology in optical networks in order to compute an end-to-end lightpath across multiple domains in GMPLS networks. We also propose changes to BGP in order to carry the abstracted information. Furthermore we use Opnet to simulate MPLS operation as a special case of GMPLS.

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