{"links":{},"id":66309,"metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00066309","sets":["1164:4088:5648:5896"]},"path":["5896"],"owner":"10","recid":"66309","title":["輻輳制御パラメータのリアルタイム推定の研究"],"pubdate":{"attribute_name":"公開日","attribute_value":"2009-10-02"},"_buckets":{"deposit":"f75d3962-cac8-42b2-a678-3a44f5f4e7c7"},"_deposit":{"id":"66309","pid":{"type":"depid","value":"66309","revision_id":0},"owners":[10],"status":"published","created_by":10},"item_title":"輻輳制御パラメータのリアルタイム推定の研究","author_link":["0","0"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"輻輳制御パラメータのリアルタイム推定の研究"},{"subitem_title":"Real-time Estimation of TCP Congestion Control Parameters","subitem_title_language":"en"}]},"item_type_id":"4","publish_date":"2009-10-02","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"明星大学大学院情報学研究科情報学専攻"},{"subitem_text_value":"明星大学情報学部情報学科"}]},"item_4_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"Department of Information Science, Graduate School of Information Science, Meisei University","subitem_text_language":"en"},{"subitem_text_value":"School of Information Science, Meisei University","subitem_text_language":"en"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_publisher":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"情報処理学会","subitem_publisher_language":"ja"}]},"publish_status":"0","weko_shared_id":-1,"item_file_price":{"attribute_name":"Billing file","attribute_type":"file","attribute_value_mlt":[{"url":{"url":"https://ipsj.ixsq.nii.ac.jp/record/66309/files/IPSJ-IOT09007007.pdf"},"date":[{"dateType":"Available","dateValue":"2011-10-02"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-IOT09007007.pdf","filesize":[{"value":"204.1 kB"}],"mimetype":"application/pdf","priceinfo":[{"tax":["include_tax"],"price":"660","billingrole":"5"},{"tax":["include_tax"],"price":"330","billingrole":"6"},{"tax":["include_tax"],"price":"0","billingrole":"43"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"815fe5cc-8dcc-4fed-a0b3-eb1efdbd2579","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2009 by the Information Processing Society of Japan"}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"茂木, 重憲"},{"creatorName":"渡邊, 晶"}],"nameIdentifiers":[{}]}]},"item_4_creator_6":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Shigenori, Mogi","creatorNameLang":"en"},{"creatorName":"Akira, Watanabe","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA12326962","subitem_source_identifier_type":"NCID"}]},"item_4_textarea_12":{"attribute_name":"Notice","attribute_value_mlt":[{"subitem_textarea_value":"SIG Technical Reports are nonrefereed and hence may later appear in any journals, conferences, symposia, etc."}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourceuri":"http://purl.org/coar/resource_type/c_18gh","resourcetype":"technical report"}]},"item_4_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"TCP の輻輳制御動作の解析や再送原因の解明には，cwnd や ssthresh の値が必要である．しかしこれらの値は TCP の内部変数で，伝送されるパケットからは入手できない．そこで伝送されるパケットに対して TCP の輻輳制御アルゴリズムと同じ動作を行い，リアルタイムに値を推定する研究を行った．FreeBSD の TCP を対象として，tcpdump に推定機能を実装し，TCP 内部の値と推定値が一致することを確認した．","subitem_description_type":"Other"}]},"item_4_description_8":{"attribute_name":"論文抄録(英)","attribute_value_mlt":[{"subitem_description":"To analyze the behavior of the TCP congestion contorol, the value of the congestion control parameters, such as cwnd and ssthresh are required. These values could not be obtained from packets because they are not stored in the TCP header but they are maintained in the operating system. We present this method to estimate the TCP congestion contorol parameters in real time. In the method, we apply the TCP congestion control algorithms implemented in FreeBSD 8.0 to each observed packet. We have modified tcpdump to support our estimation method. The result of simple comparision test between estimated values and the values inside the FreeBSD kernel shows our estimation method goes almost well.","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"6","bibliographic_titles":[{"bibliographic_title":"研究報告インターネットと運用技術（IOT）"}],"bibliographicPageStart":"1","bibliographicIssueDates":{"bibliographicIssueDate":"2009-10-02","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"7","bibliographicVolumeNumber":"2009-IOT-7"}]},"relation_version_is_last":true,"weko_creator_id":"10"},"created":"2025-01-18T23:27:10.519394+00:00","updated":"2025-01-22T01:04:41.615817+00:00"}