永見 健一 NAGAMI Kenichi

ID:9000004333303

株式会社インテック 先端技術研究所研究開発部 INTEC Inc. (2012年 CiNii収録論文より)

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Articles:  1-20 of 60

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  • A Quality Information Sharing on Access Line by Smartphone  [in Japanese]

    KITAGUCHI Yoshiaki , NAGAMI Kenichi , KIKUCHI Yutaka

    With the rapid growth in demand of smartphone use, the development of Wi-Fi spot will continue to progress by telecommunications carriers. Nowadays, the user is becoming available to choose from a var …

    IEICE technical report. Internet Architecture 112(212), 53-58, 2012-09-21

  • Survey of the Internet connectivity using geolocation of smartphones  [in Japanese]

    KITAGUCHI Yoshiaki , NAGAMI Kenichi , KIKUCHI Yutaka

    With the rapid growth in demand of smartphone use, the development of Wi-Fi spot will continue to progress by telecommunications carriers. Nowadays, the user is becoming available to choose from a var …

    IEICE technical report. Social Implications of Technology and Information Ethics 111(484), 281-286, 2012-03-08

    References (8)

  • Survey of the Internet connectivity using geolocation of smartphones  [in Japanese]

    KITAGUCHI Yoshiaki , NAGAMI Kenichi , KIKUCHI Yutaka

    With the rapid growth in demand of smartphone use, the development of Wi-Fi spot will continue to progress by telecommunications carriers. Nowadays, the user is becoming available to choose from a var …

    IEICE technical report. Internet Architecture 111(485), 281-286, 2012-03-08

    References (8)

  • The Internet communication quality measurement and experience quality in Japan  [in Japanese]

    NASU Nobuaki , KITAGUCHI Yoshiaki , WAKITANI Yasuhiro , NAGAMI Kenichi , KIKUCHI Yutaka , YOSHIDA Kaoru

    In these days, broadband Internet connectivity has been widely deployed in Japan. Even though people can utilize the connectivity to access the Internet, communication qualities, such as delay and pac …

    IEICE technical report 109(137), 39-42, 2009-07-10

    Cited by (2)

  • A Trend Analysis of Delay and Packet Loss in Broadband Internet Environment through End Customers' View  [in Japanese]

    YOSHIDA Kaoru , FUJII Yoriko , KIKUCHI Yutaka , YAMAMOTO Masateru , NAGAMI Ken'ichi , NAKAGAWA Ikuo , ESAKI Hiroshi

    この10年間に,一般家庭には安価で高速なインターネット環境が広く提供されるようになってきている.一般家庭のユーザはこうしたインターネット環境を常時利用可能であるが,その通信環境は必ずしも一定していないのが現状である.これはインターネットが常に多くのユーザに利用されており,あるユーザの利用可能帯域やコアネットワークにおけるルータ負荷などが時間とともに変化しているからであり,こうしたネットワーク状態の …

    The IEICE transactions on communications B 91(10), 1182-1192, 2008-10-01

    References (9) Cited by (1)

  • Realization and Deployment of Next Generation Internet via IPv6:The Reality of IPv6 Routing  [in Japanese]

    ISHII Hideo , NAGAMI Kenichi

    インターネットは,近年,社会のインフラとして重要な役割を果たすようになってきている.現在のインターネットは,IPv4によって構成されているが,2010年には,地域インターネットレジストリ(RIR)の未分配IPv4アドレスの在庫がなくなると予想されている1).今後インターネットに接続するホストが多くなることを考えると,IPv6を使ったネットワークの構築を検討していく必要がある.本稿では,IPv6ルー …

    IPSJ Magazine 49(3), 257-261, 2008-03-15

    IPSJ  References (7)

  • Quality improvement by using bicast and the evaluation with VoIP  [in Japanese]

    YOSHIOKA Akira , WATANABE Toshihiko , KUSUDA Tomohiko , INOUE Harumitsu , NISHIKAWA Makoto , NAGAMI Kennichi , NAKAGAWA Ikuo

    移動するクルマといったモバイル環境における通信の不安定さを補う技術としてバイキャスト技術が有望と筆者らは考える.従来,このような通信品質改善手法を評価する場合,パケット到達率,往復遅延時間といった単純な指標を用いて議論することが多かった.しかし,実際に実現したいことは, (通信を利用する)アプリケーションレベルでの安定性改善であり,上記指標の改善とそれとは一致しない可能性もある.そこで,筆者らはV …

    情報処理学会研究報告. QAI, [高品質インターネット] 2007(72), 109-113, 2007-07-19

  • Inferring the Internet topology in Japan through end-to-end latency measurement  [in Japanese]

    KIKUCHI Yutaka , FUJII Yoriko , MASATERU Yamamoto , NAGAMI Ken'ichi , NAKAGAWA Ikuo

    In this paper, we try to infer the Japanese Internet topology based on collected delay data from four ISPs. We first propose a hypothetical model of the Japanese Internet topology, then conduct the hy …

    情報処理学会研究報告. QAI, [高品質インターネット] 2007(72), 103-108, 2007-07-19

  • Quality improvement by using bicast and the evaluation with VoIP  [in Japanese]

    YOSHIOKA Akira , WATANABE Toshihiko , KUSUDA Tomohiko , INOUE Harumitsu , NISHIKAWA Makoto , NAGAMI Kennichi , NAKAGAWA Ikuo

    移動するクルマといったモバイル環境における通信の不安定さを補う技術としてバイキャスト技術が有望と筆者らは考える.従来,このような通信品質改善手法を評価する場合,パケット到達率,往復遅延時間といった単純な指標を用いて議論することが多かった.しかし,実際に実現したいことは, (通信を利用する)アプリケーションレベルでの安定性改善であり,上記指標の改善とそれとは一致しない可能性もある.そこで,筆者らはV …

    情報処理学会研究報告. DSM, [分散システム/インターネット運用技術] 46, 109-113, 2007-07-19

    References (11)

  • Inferring the Internet topology in Japan through end-to-end latency measurement  [in Japanese]

    KIKUCHI Yutaka , FUJII Yoriko , YAMAMOTO MASATERU , NAGAMI Ken'ichi , NAKAGAWA Ikuo

    In this paper, we try to infer the Japanese Internet topology based on collected delay data from four ISPs. We first propose a hypothetical model of the Japanese Internet topology, then conduct the hy …

    情報処理学会研究報告. DSM, [分散システム/インターネット運用技術] 46, 103-108, 2007-07-19

    References (3) Cited by (1)

  • Active Adjusting Architecture for Broadcast Contents Delivery  [in Japanese]

    NAKAGAWA Ikuo , NAGAMI Kenichi , OGASHIWA Nobuo , AZUMA Masami , UCHIDA Toyokazu

    Digital broadcasting technologies and evolution of broadband Internet services will cause the realization of broadcasting services over "Ubiquitous Network" environment soon. Although that some servic …

    情報処理学会研究報告. QAI, [高品質インターネット] 22, 79-83, 2007-07-18

    References (2)

  • Quality improvement by using bicast and the evaluation with VoIP  [in Japanese]

    YOSHIOKA Akira , WATANABE Toshihiko , KUSUDA Tomohiko , INOUE Harumitsu , NISHIKAWA Makoto , NAGAMI Kennichi , NAKAGAWA Ikuo

    移動するクルマといったモバイル環境における通信の不安定さを補う技術としてバイキャスト技術が有望と筆者らは考える.従来,このような通信品質改善手法を評価する場合,パケット到達率,往復遅延時間といった単純な指標を用いて議論することが多かった.しかし,実際に実現したいことは, (通信を利用する)アプリケーションレベルでの安定性改善であり,上記指標の改善とそれとは一致しない可能性もある.そこで,筆者らはV …

    IEICE technical report 107(151), 109-113, 2007-07-12

    References (11)

  • Inferring the Internet topology in Japan through end-to-end latency measurement  [in Japanese]

    KIKUCHI Yutaka , FUJII Yoriko , YAMAMOTO MASATERU , NAGAMI Ken'ichi , NAKAGAWA Ikuo

    In this paper, we try to infer the Japanese Internet topology based on collected delay data from four ISPs. We first propose a hypothetical model of the Japanese Internet topology, then conduct the hy …

    IEICE technical report 107(151), 103-108, 2007-07-12

    References (3) Cited by (5)

  • Measurement and analysis of the internet quality from an end users' point of view  [in Japanese]

    YAMAMOTO Masateru , NAGAMI Kenichi , KIKUCHI Yutaka , FUJII Yoriko , NAKAGAWA Ikuo

    Popularization of broadband caused phenomena, such as an increase of P2P type applications and traffic. It is necessary to investigate how the circumstances of users influence to the traffic quality. …

    情報処理学会研究報告. QAI, [高品質インターネット] 23, 23-28, 2007-05-29

    References (2)

  • Measurement and analysis of the internet quality from an end users' point of view  [in Japanese]

    YAMAMOTO Masateru , NAGAMI Kenichi , KIKUCHI Yutaka , FUJII Yoriko , NAKAGAWA Ikuo

    Popularization of broadband caused phenomena, such as an increase of P2P type applications and traffic. It is necessary to investigate how the circumstances of users influence to the traffic quality. …

    IEICE technical report 107(74), 23-28, 2007-05-22

    References (2) Cited by (2)

  • Development of Testing Equipment for the Interoperability Test of Heterogeneous Routers  [in Japanese]

    KIKUCHI Yutaka , ISHIHARA Takeshi , HISHIOKA Hiroo , KUSUDA Tomohiko , NAGAMI Ken'ichi , NAKAGAWA Ikuo , ESAKI Hiroshi

    MILS-IX architecture makes IXes widely distributed and Layer 2 media free. There were interoperability problems on routing equipments to deploy the architecture to the Internet, so router manufacturer …

    情報処理学会研究報告. DSM, [分散システム/インターネット運用技術] 45, 19-24, 2007-05-10

    References (8)

  • Development of Testing Equipment for the Interoperability Test of Heterogeneous Routers  [in Japanese]

    KIKUCHI Yutaka , ISHIHARA Takeshi , HISHIOKA Hiroo , KUSUDA Tomohiko , NAGAMI Ken'ichi , NAKAGAWA Ikuo , ESAKI Hiroshi

    MILS-IX architecture makes IXes widely distributed and Layer 2 media free. There were interoperability problems on routing equipments to deploy the architecture to the Internet, so router manufacturer …

    IEICE technical report 107(30), 19-24, 2007-05-03

    References (8)

  • Proposal and Evaluation of Load Balancing Algorithm for MPLS TE LSP Setup in Carrier Network  [in Japanese]

    KUMAKI KENJI , NAKAWAGA IKUO , NAGAMI KEN-ICHI , HASEGAWA TERUYUKI , ANO SHIGEHIRO

    Recently some carriers try to build a converged network as NGN (Next Generation Network) and need to control high-capacity traffic which includes some kinds of applications such as voice, video and da …

    IPSJ journal 48(4), 1616-1626, 2007-04-15

    IPSJ  References (17) Cited by (4)

  • Research and Realization of "MPLS-IX" Architecture by Collaboration of Academic and Industries  [in Japanese]

    MATSUSHIMA SATORU , NAKAGAWA IKUO , NAGAMI KENICHI , KIKUCHI YUTAKA , ESAKI HIROSHI

    This paper gives the overview of activities related with the development and deployment of "MPLS-IX Architecture" in the next generation distributed IX development consortium. We have focused on the M …

    IPSJ journal 48(2), 721-732, 2007-02-15

    IPSJ  References (13)

  • Active Adjusting Architecture for Broadcast Contents Delivery  [in Japanese]

    NAKAGAWA Ikuo , NAGAMI Kenichi , OGASHIWA Nobuo , AZUMA Masami , UCHIDA Toyokazu

    Digital broadcasting technologies and evolution of broadband Internet services will cause the realization of broadcasting services over "Ubiquitous Network" environment soon. Although that some servic …

    IEICE technical report 106(465), 79-83, 2007-01-11

    References (2)

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