| Project/Area Number |
62580022
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Informatics
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
HASEGAWA Toshiharu Kyoto Univ. Faculty of Eng., Professor, 工学部, 教授 (40025911)
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| Co-Investigator(Kenkyū-buntansha) |
TAKINE Tetsuya Kyoto Univ. Fac. of Eng. Assistant, 工学部, 助手 (00216821)
NISHIO Shojiro Osaka Univ. Fac. of Eng., Associate Prof., 基礎工学部, 助教授 (50135539)
TAKAHASHI Yutaka KYOTO Univ. Fac. of Eng., Associate Prof., 工学部, 助教授 (00135526)
FUKUSHIMA Masao Kyoto Univ. Fac. of Eng., Associate Prof., 工学部, 助教授 (30089114)
IBARAKI Toshihide Kyoto Univ. Faculty of Eng., Professor, 工学部, 教授 (50026192)
荻野 勝哉 京都大学, 工学部, 講師 (60026292)
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| Project Period (FY) |
1987 – 1989
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| Project Status |
Completed (Fiscal Year 1989)
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| Budget Amount *help |
¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1989: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1988: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1987: ¥1,500,000 (Direct Cost: ¥1,500,000)
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| Keywords | Information flow / Networking / LAN / Performance Evaluation / Database / CSMA / Polling system / Interconnection / ネットワーキング / データベース / CSMAトークン方式 / ポーリング |
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| Research Abstract |
1. In order to develop performance evaluation techniques of interconnected networks of LAN's with CSMA/CD, departure processes from this type of networks are studied. The relations between gateway buffer size and message loss ratio, overall performance of interconnected LAN's and the behavior of messages with priority are derived so that effective methods of analysis, design and evaluation of the system are developed.
2. For polling systems, message departure processes, asymmetric polling systems and systems with correlated input are studied and effective methods of analysis, design and evaluation of them are derived.
3. Distributed database systems with multiversion are studied considering the effects of transmission delay in the network. Performance evaluation of some of the concurrency control algorithms are carried out with applications of queueing network theory.
4. Hybrid CSMA/CD systems and multichannel slotted ALOHA systems are studied and performance evaluation methods for them are derived.
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