The Experts below are selected from a list of 8367 Experts worldwide ranked by ideXlab platform

M Fukui - One of the best experts on this subject based on the ideXlab platform.

  • requirements and design of flexible nfv network infrastructure node leveraging sdn openflow
    Optical Network Design and Modelling, 2014
    Co-Authors: Hitoshi Masutani, Yoshihiro Nakajima, Takeshi Kinoshita, Tomoya Hibi, Hirokazu Takahashi, Kazuaki Obana, Katsuhiro Shimano, M Fukui
    Abstract:

    Carrier network service infrastructures are becoming increasingly complex since thousands of service-specific hardware-based network nodes are implemented to support a wide variety of network services. This has resulted in critically high increases in the maintenance costs to ensure service quality for network services and the deployment costs for new network services. Addressing these problems requires new ways to simplify and automate operations and infrastructures. Network Function Virtualization (NFV) and software-defined networking (SDN)/OpenFlow are attractive concepts that address these problems. In this study we present the requirements and a basic design of a flexible and elastic network service infrastructure with NFV and SDN/OpenFlow. We also introduce a virtual BRAS (Broadband Remote Access Server) prototype using Intel DPDK as high performance throughputs.

  • ONDM - Requirements and design of flexible NFV network infrastructure node leveraging SDN/OpenFlow
    2014
    Co-Authors: Hitoshi Masutani, Yoshihiro Nakajima, Tomoya Hibi, Hirokazu Takahashi, Kazuaki Obana, Katsuhiro Shimano, Kinoshita Takeshi, M Fukui
    Abstract:

    Carrier network service infrastructures are becoming increasingly complex since thousands of service-specific hardware-based network nodes are implemented to support a wide variety of network services. This has resulted in critically high increases in the maintenance costs to ensure service quality for network services and the deployment costs for new network services. Addressing these problems requires new ways to simplify and automate operations and infrastructures. Network Function Virtualization (NFV) and software-defined networking (SDN)/OpenFlow are attractive concepts that address these problems. In this study we present the requirements and a basic design of a flexible and elastic network service infrastructure with NFV and SDN/OpenFlow. We also introduce a virtual BRAS (Broadband Remote Access Server) prototype using Intel DPDK as high performance throughputs.

Hitoshi Masutani - One of the best experts on this subject based on the ideXlab platform.

  • requirements and design of flexible nfv network infrastructure node leveraging sdn openflow
    Optical Network Design and Modelling, 2014
    Co-Authors: Hitoshi Masutani, Yoshihiro Nakajima, Takeshi Kinoshita, Tomoya Hibi, Hirokazu Takahashi, Kazuaki Obana, Katsuhiro Shimano, M Fukui
    Abstract:

    Carrier network service infrastructures are becoming increasingly complex since thousands of service-specific hardware-based network nodes are implemented to support a wide variety of network services. This has resulted in critically high increases in the maintenance costs to ensure service quality for network services and the deployment costs for new network services. Addressing these problems requires new ways to simplify and automate operations and infrastructures. Network Function Virtualization (NFV) and software-defined networking (SDN)/OpenFlow are attractive concepts that address these problems. In this study we present the requirements and a basic design of a flexible and elastic network service infrastructure with NFV and SDN/OpenFlow. We also introduce a virtual BRAS (Broadband Remote Access Server) prototype using Intel DPDK as high performance throughputs.

  • ONDM - Requirements and design of flexible NFV network infrastructure node leveraging SDN/OpenFlow
    2014
    Co-Authors: Hitoshi Masutani, Yoshihiro Nakajima, Tomoya Hibi, Hirokazu Takahashi, Kazuaki Obana, Katsuhiro Shimano, Kinoshita Takeshi, M Fukui
    Abstract:

    Carrier network service infrastructures are becoming increasingly complex since thousands of service-specific hardware-based network nodes are implemented to support a wide variety of network services. This has resulted in critically high increases in the maintenance costs to ensure service quality for network services and the deployment costs for new network services. Addressing these problems requires new ways to simplify and automate operations and infrastructures. Network Function Virtualization (NFV) and software-defined networking (SDN)/OpenFlow are attractive concepts that address these problems. In this study we present the requirements and a basic design of a flexible and elastic network service infrastructure with NFV and SDN/OpenFlow. We also introduce a virtual BRAS (Broadband Remote Access Server) prototype using Intel DPDK as high performance throughputs.

Wang Mingchang - One of the best experts on this subject based on the ideXlab platform.

Paul M. Harari - One of the best experts on this subject based on the ideXlab platform.

  • Peer review program to enhance treatment planning quality assurance for community radiation oncologists
    Journal of Radiation Oncology, 2020
    Co-Authors: Jessica Schuster, Greg Cooley, Benjamin Y. Durkee, Anna K. Olson, Adam R. Burr, Paul M. Harari
    Abstract:

    Objective Many cancer patients are treated at treatment centers staffed by community radiation oncologists (CRO). Patients choose these facilities for location convenience and anticipate equivalent care to “high volume” centers despite contrary literature. Local CROs hypothesized that a two-step quality assurance (QA) program that added early contour and case review would improve confidence in radiation treatment plan quality and reduce variability across facilities. Methods Five physicians at five academic satellites participated in the pilot two-step QA program. This program established an efficient, secure, HIPPA compliant workflow to review case details and contours on CT simulation after uploading to a Remote Access Server on a commercially available platform. Results Over 12 months, 148 patient contours were reviewed by at least one CRO with an average of 2 reviewers per case. Reviewers approved 67% without change, requested clarification or change in 28%, and would not approve 4% of cases unless revised. The most common reasons cited for change request were “review GTV—volume increase” and “review CTV—volume increase.” Eighty-eight percent of treated cases that were not approved initially subsequently completed recommended modifications. Published literature was shared for 29% cases and sub-specialist consulted for 19% of cases. Conclusion A two-step QA program was considered highly valuable by all participants allowing easily implanted mechanisms for standardization, higher case volume, and shared educational resources for small academic satellite CROs who are faced with the challenge of caring for a diverse community cancer population. Feasibility suggests the model could serve as a model for other CRO.

  • Peer review program to enhance treatment planning quality assurance for community radiation oncologists
    Journal of Radiation Oncology, 2020
    Co-Authors: Jessica Schuster, Greg Cooley, Benjamin Y. Durkee, Anna K. Olson, Adam R. Burr, Paul M. Harari
    Abstract:

    Many cancer patients are treated at treatment centers staffed by community radiation oncologists (CRO). Patients choose these facilities for location convenience and anticipate equivalent care to “high volume” centers despite contrary literature. Local CROs hypothesized that a two-step quality assurance (QA) program that added early contour and case review would improve confidence in radiation treatment plan quality and reduce variability across facilities. Five physicians at five academic satellites participated in the pilot two-step QA program. This program established an efficient, secure, HIPPA compliant workflow to review case details and contours on CT simulation after uploading to a Remote Access Server on a commercially available platform. Over 12 months, 148 patient contours were reviewed by at least one CRO with an average of 2 reviewers per case. Reviewers approved 67% without change, requested clarification or change in 28%, and would not approve 4% of cases unless revised. The most common reasons cited for change request were “review GTV—volume increase” and “review CTV—volume increase.” Eighty-eight percent of treated cases that were not approved initially subsequently completed recommended modifications. Published literature was shared for 29% cases and sub-specialist consulted for 19% of cases. A two-step QA program was considered highly valuable by all participants allowing easily implanted mechanisms for standardization, higher case volume, and shared educational resources for small academic satellite CROs who are faced with the challenge of caring for a diverse community cancer population. Feasibility suggests the model could serve as a model for other CRO.

Yuan Wen - One of the best experts on this subject based on the ideXlab platform.

  • NOMS - QoE-based bandwidth allocation with SDN in FTTH networks
    2014 IEEE Network Operations and Management Symposium (NOMS), 2014
    Co-Authors: Wei Guo, Wenyu Zhang, Yuan Wen
    Abstract:

    In the High Speed Internet (HSI) service of the Fiber-To-The-Home (FTTH) networks, there are increasingly various applications, such as browsing, video streaming, large downloads and online games. They are competing for the fixed bandwidth on a best-effort basis, and finally resulting in the network congestion and poor quality of experience (QoE). Users want to improve the quality of certain applications. However, today's network service controller (e.g. Broadband Remote Access Server, BRAS) lacks mechanisms to meet the users' desire to enhance the QoE of specific applications. Moreover, BRAS still lacks mechanisms to allocate the bandwidth resources properly for users' different applications according to their “sweet points”. “Sweet points” is a specific bandwidth value. The QoE gets worse quickly when the bandwidth is smaller than the “sweet point”, and keeps the same approximately when the bandwidth is larger than the “sweet point”. In this paper, we proposed a novel BRAS architecture using Software-Defined Networking (SDN) technology, which can improve the user's QoE by adjusting the bandwidth of a specific application to its “sweet point” according to their requirements. To demonstrate the feasibility of our proposed novel BRAS, we built a prototype using SDN to help the user to adjust the bandwidth for the specific application and improve the users' QoE. The experimental results show that users could enhance the QoE of specific applications according to users' preference.