KDDI R&D Laboratories

Displaying 1-7 of 7 results

  • White Papers // Sep 2012

    Control Plane Techniques for Elastic Optical Networks: GMPLS/PCE Vs OpenFlow

    Elastic Optical Networks (EON), which are able to allocate an appropriate optical spectrum range and modulation format to an optical path according to the client (e.g. IP) traffic demand and path attributes (e.g., physical length or optical impairments), have been proposed to more efficiently utilize network spectrum resources. A control...

    Provided By KDDI R&D Laboratories

  • White Papers // Sep 2012

    First Proof-of-Concept Demonstration of OpenFlow-Controlled Elastic Optical Networks Employing Flexible Transmitter/Receiver

    In this paper, for the first time, the authors experimentally demonstrate an OpenFlow-controlled Elastic Optical Network (EON) employing a flexible transmitter/receiver. The flexible transmitter can switch the symbol rate and modulation format of the optical signal without modifying the hardware, and the flexible receiver can automatically detect different modulation formats...

    Provided By KDDI R&D Laboratories

  • White Papers // Feb 2012

    First Field Trial of an OpenFlow-Based Unified Control Plane for Multi-Layer Multi-Granularity Optical Networks

    In today's commercial IP/optical multi-layer networks, different layers are separately operated without dynamic interaction, which leads to low network efficiency, high OPEX and CAPEX, as well as long processing latency for path provisioning and restoration. Despite a decade of development and standardization efforts, with three different interconnection models (i.e. peer,...

    Provided By KDDI R&D Laboratories

  • White Papers // Oct 2011

    Interworking Between OpenFlow and PCE for Dynamic Wavelength Path Control in Multi-Domain WSON

    OpenFlow, as a promising control plane technique for a software-defined network, has been attracting much attention from both academia and industry in recent years. In, an OpenFlow-based control plane for a single domain Wavelength Switched Optical Network (WSON) has been experimentally presented. However, to the best of the authors' knowledge,...

    Provided By KDDI R&D Laboratories

  • White Papers // Oct 2009

    On Locating Loss Links of Signaling Messages in SIP-Based Services

    The number of SIP-based services provided by Network Service Providers (NSPs) is increasing. SIP allows NSPs to collect the information on traffic control and charging fees for their customer communications. Monitoring SIP signaling messages (exchanged between SIP servers and user terminals) is vital for providing stable SIP-based services. One of...

    Provided By KDDI R&D Laboratories

  • White Papers // Oct 2009

    OSPF-Based Fast Reroute for BGP Link Failures

    The Border Gateway Protocol (BGP) is one of the key components of today's Internet infrastructure. Many ISPs rely on BGP for convergence of inter-domain routes upon BGP link failures. However, the convergence of BGP requires several seconds of downtime, which may cause critical performance degradation of applications. In this paper,...

    Provided By KDDI R&D Laboratories

  • White Papers // Apr 2009

    Security Verification for Authentication and Key Exchange Protocols

    In a ubiquitous environment, it is preferable for authentication and key exchange protocols to be optimized automatically in accordance with security requirements. In this paper, it proposes a security verification method for authentication and key exchange protocols that is based on Bellare et al.'s model. In particular, it shows the...

    Provided By KDDI R&D Laboratories

  • White Papers // Oct 2009

    On Locating Loss Links of Signaling Messages in SIP-Based Services

    The number of SIP-based services provided by Network Service Providers (NSPs) is increasing. SIP allows NSPs to collect the information on traffic control and charging fees for their customer communications. Monitoring SIP signaling messages (exchanged between SIP servers and user terminals) is vital for providing stable SIP-based services. One of...

    Provided By KDDI R&D Laboratories

  • White Papers // Oct 2009

    OSPF-Based Fast Reroute for BGP Link Failures

    The Border Gateway Protocol (BGP) is one of the key components of today's Internet infrastructure. Many ISPs rely on BGP for convergence of inter-domain routes upon BGP link failures. However, the convergence of BGP requires several seconds of downtime, which may cause critical performance degradation of applications. In this paper,...

    Provided By KDDI R&D Laboratories

  • White Papers // Apr 2009

    Security Verification for Authentication and Key Exchange Protocols

    In a ubiquitous environment, it is preferable for authentication and key exchange protocols to be optimized automatically in accordance with security requirements. In this paper, it proposes a security verification method for authentication and key exchange protocols that is based on Bellare et al.'s model. In particular, it shows the...

    Provided By KDDI R&D Laboratories

  • White Papers // Feb 2012

    First Field Trial of an OpenFlow-Based Unified Control Plane for Multi-Layer Multi-Granularity Optical Networks

    In today's commercial IP/optical multi-layer networks, different layers are separately operated without dynamic interaction, which leads to low network efficiency, high OPEX and CAPEX, as well as long processing latency for path provisioning and restoration. Despite a decade of development and standardization efforts, with three different interconnection models (i.e. peer,...

    Provided By KDDI R&D Laboratories

  • White Papers // Sep 2012

    Control Plane Techniques for Elastic Optical Networks: GMPLS/PCE Vs OpenFlow

    Elastic Optical Networks (EON), which are able to allocate an appropriate optical spectrum range and modulation format to an optical path according to the client (e.g. IP) traffic demand and path attributes (e.g., physical length or optical impairments), have been proposed to more efficiently utilize network spectrum resources. A control...

    Provided By KDDI R&D Laboratories

  • White Papers // Sep 2012

    First Proof-of-Concept Demonstration of OpenFlow-Controlled Elastic Optical Networks Employing Flexible Transmitter/Receiver

    In this paper, for the first time, the authors experimentally demonstrate an OpenFlow-controlled Elastic Optical Network (EON) employing a flexible transmitter/receiver. The flexible transmitter can switch the symbol rate and modulation format of the optical signal without modifying the hardware, and the flexible receiver can automatically detect different modulation formats...

    Provided By KDDI R&D Laboratories

  • White Papers // Oct 2011

    Interworking Between OpenFlow and PCE for Dynamic Wavelength Path Control in Multi-Domain WSON

    OpenFlow, as a promising control plane technique for a software-defined network, has been attracting much attention from both academia and industry in recent years. In, an OpenFlow-based control plane for a single domain Wavelength Switched Optical Network (WSON) has been experimentally presented. However, to the best of the authors' knowledge,...

    Provided By KDDI R&D Laboratories