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Study of Teaching Materials on Demand Using Space Collaboration System

Research Project

Project/Area Number 10680248
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Educational technology
Research InstitutionNational Institute of Multimedia Education

Principal Investigator

KONDO Kimio  Research & Development, Professor, 研究開発部, 教授 (40249925)

Co-Investigator(Kenkyū-buntansha) TANAKA Kenji  Research & Development, Researcher, 通信総合研究所, 研究官
ASAI Kikuo  Research & Development, Associate Professor, 研究開発部, 助教授 (90290874)
YUKI Kiyohiro  Research & Development, Professor, 研究開発部, 教授 (60300696)
OSAWA Noritaka  Research & Development, Associate Professor, 研究開発部, 助教授 (30251721)
SUGIMOTO Yuji  Research & Development, Professor, 研究開発部, 教授 (90311167)
林 善士  メディア教育開発センター, 研究開発部, 助教授 (70300697)
Project Period (FY) 1998 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2000: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1999: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1998: ¥700,000 (Direct Cost: ¥700,000)
KeywordsSatellite Network / Multicast Communication / IP Connection / Data Transmission Service / Link Quality / 衛星通信 / 教育交流ネットワーク / データ伝送 / TCP / UDP / VSAT
Research Abstract

The purpose of this research was to develop data transmission system for provide learning materials with universities, which was strongly required to extend Inter-University Satellite Network, "Space Collaboration System" as an infrastructure of the next generation in higher education. TCP (Transmission Control Protocol) is suitable for point-to-point connection, however, it has feature of bad throughput efficiency because of large round trip time in propagation. So, we have used UDP (User Datagram Protocol), and achieved reliable data transmission, implementing a multicast file transfer program with several VSAT stations of the SCS.
Extension of the SCS needed remote use in the same campus. The data transmission system has been designed to transfer data from any lecture room through local area network. Remote control was necessary for using the SCS at the room outside the SCS room. We have then developed the link control system which can be operated at the distance room.
The SCS increases the VSAT stations every year, expanding the network. It has been recognized that the SCS is an important network for distance education in Japan. The number of simultaneous session will also go up, and this causes a budget problem. There are several requirements to improve the SCS in technical and operational matters, though the quality of images and the operation of instruments have been evaluated as reasonable. We hope that the data transmission service will continue to support the SCS users strongly.

Report

(4 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] K.Asai,N.Osawa,and K.Kondo: "On the data transmission scheme in inter-university satellite network"Proceedings of 2000 Asia-Pacific Symposium on Broadcasting and Communications (APSBC2000). 48-51 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 浅井紀久夫,大澤範高,近藤喜美夫: "大学間衛星ネットワークにおけるデータ伝送方式の検討"2000年電子情報通信学会ソサイエティ大会. B-3-18. 199 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Asai,N.Osawa,K.Kondo,and K.Yuki: "Reliable multicast file transfer on the inter-university satellite network"Proceedings of 2000 International Conference on Communication Technology (ICCT2000). 1137-1140 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 浅井紀久夫 他: "大学間衛星ネットワーク「スペース・コラボレーション・システム」の遠隔回線制御"情報処理学会論文誌. 40,11. 3957-3966 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 浅井紀久夫 他: "スペース・コラボレーション・システムにおけるデータ伝送サービスと品質に関する検討"電子情報通信学会信学技報. ET99-41. 17-24 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 浅井紀久夫 他: "スペース・コラボレーション・システムにおけるデータ伝送の検討"情報処理学会研究報告. GW30-2. 7-12 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Asai, et al.: "Data Transmission on the Japanese Inter-university Sattelite Network"Pacific Telecommunications Council. PTC99. M.2.5.2 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Asai, N.Osawa, and K.Kondo: "On the data transmission scheme in inter-university satellite network"Proceedings of 2000 Asia-Pacific Symposium on Broadcasting and Communications (APSBC2000). 48-51 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Asai, N.Osawa, and K.Kondo: "Study on data transmissions scheme in inter-University satellite network"2000 IEICE Society Conference Proceedings. B-3-18 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Asai, N.Osawa, K.Kondo, K.Yuki: "Reliable multicast file transfer on the inter-university satellite network"Procedings of 2000 International Conference on Communication Technology (ICCT2000). 1137-1140 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Asai, et al.: "Remote link control of inter-university satellite network (Space Collaboration System)"Transactions of Information Processing Society of Japan. Vol.40, no.11. 3957-3966 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Asai, et al.: "Study of data transmission service and its quality on the space collaboration system"Technical Report of IEICE. ET99-41. 17-24 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Asai, et al.: "Study of data transmission using the Space Collaboration System"Research Report of IPSJ. GW30-2. 7-12 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Asai, et al.: "Data transmission on the Japanese inter-university satellite network"Pacific Telecommunications Council. M.2.5.2. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Asai,N.Osawa,and K.Kondo: "On the data transmission scheme in inter-university satellite network"Peoceedings of 2000 Asia-Pacific Symposium on Broadcasting and Communications (APSBC2000). 48-51 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 浅井紀久夫,大澤範高,近藤喜美夫: "大学間衛星ネットワークにおけるデータ伝送方式の検討"2000年電子情報通信学会ソサイエティ大会. B-3-18. 199 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Asai,N.Osawa,K.Kondo,and K.Yuki: "Reliable multicast file transfer on the inter-university sattelite network"Proceedings of 2000 International Conference on Communication Technology (ICCT2000). 1137-1140 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 浅井紀久夫、他: "大学間衛星ネットワーク「スペース・コラボレーション・システム」の遠隔回線制御"情報処理学会論文誌. 40,11. 3957-3966 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 浅井紀久夫、他: "スペース・コラボレーション・システムにおけるデータ伝送サービスと品質に関する検討"電子情報通信学会信学技報. ET99-41. 17-24 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 浅井紀久夫 他: "スペース・コラポレーション・システムにおけるデータ伝送の検討" 情報処理学会研究報告. GW30-2. 7-12 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Asai et al.: "Data Transmission on the Japanese Inter-University Satellite Network" Pacific Telecommunications Council. (in press). (1999)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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