{"created":"2025-06-11T04:18:09.717427+00:00","id":2000335,"links":{},"metadata":{"_buckets":{"deposit":"6028a030-9805-4449-bb23-d035c4652888"},"_deposit":{"created_by":20,"id":"2000335","owner":"20","owners":[20],"pid":{"revision_id":0,"type":"depid","value":"2000335"},"status":"published"},"_oai":{"id":"oai:muroran-it.repo.nii.ac.jp:02000335","sets":["41:227"]},"author_link":[],"control_number":"2000335","item_81_date_granted_17":{"attribute_name":"学位授与年月日","attribute_value_mlt":[{"subitem_dategranted":"2025-03-24"}]},"item_81_degree_grantor_10":{"attribute_name":"学位授与機関","attribute_value_mlt":[{"subitem_degreegrantor":[{"subitem_degreegrantor_language":"ja","subitem_degreegrantor_name":"室蘭工業大学"},{"subitem_degreegrantor_language":"en","subitem_degreegrantor_name":"Muroran Institute of Technology"}],"subitem_degreegrantor_identifier":[{"subitem_degreegrantor_identifier_name":"10103","subitem_degreegrantor_identifier_scheme":"kakenhi"}]}]},"item_81_degree_name_11":{"attribute_name":"学位名","attribute_value_mlt":[{"subitem_degreename":"博士（工学）","subitem_degreename_language":"ja"}]},"item_81_description_7":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"ネットワーク機能仮想化（NFV）とともに、移動体通信事業者は、ネットワークの柔軟性、\n機動性、スケーラビリティ、コスト効率を向上させながら、第5 世代（5G）ネットワークの\n構築を開始しました。しかし、5G 技術では、今後のBeyond 5G（B5G）や6G に向けて予測さ\nれる、大量のIoT デバイスからの膨大なデータトラフィックの増加に対応できないと予測\nされています。このため、データ需要の指数関数的な増加や、より厳しいユーザー体験要件\nに対応するために、既存の5G ネットワークをアップグレードするという大きな課題が浮上\nしています。\n本論文では、B5G/6G トラフィックに対応し、今後のB5G/6G アプリケーションの体験品質\n（QoE）を向上させるために、以下の3 つの研究を行いました。まず、B5G/6G アプリケーシ\nョンからの大量のトラフィックを処理するための性能スケーリング機構を開発しました。\nこれには、現在のネットワーク状況やユーザー需要に基づいてネットワーク機能を効率的\nにスケーリングする技術の設計が含まれます。次に、NFV ネットワークにおける5G ユーザ\nーのサービス品質（QoS）を向上させました。提案したソリューションは、エンドツーエン\nド遅延の削減や、さまざまな5G サービスに十分な帯域幅を確保することなど、5G ユーザー\nが体験するQoS を改善することを目的としています。最後に、デジタルツイン（DT）やバー\nチャル/拡張現実（VR/AR）など、リアルタイムのB5G/6G アプリケーションに対するQoE を\n最適化しました。著者は、B5G/6G アプリケーションのQoE を定量化する指標として情報の\n鮮度（Age of Information, AoI）を用い、トラフィックルーティング問題を解決すること\nでQoE を確保するアプローチを提案しました。","subitem_description_language":"ja","subitem_description_type":"Abstract"},{"subitem_description":"Along with Network Function Virtualization (NFV), Mobile Network Operator\nstarted to build the fifth generation (5G) networks while enhancing network\nflexibility, agility, scalability, and cost-efficiency. However, 5G technology is\npredicted to be unable to adapt to the huge data traffic generated by massive IoT\ndevices in the future beyond 5G (B5G) and the future 6G era. This has raised the\ntremendous challenge of upgrading the existing 5G network to adapt to the\nexponential growth in data demands and stricter requirements of user experience.\nTo make the 5G network adapt to forthcoming B5G/6G traffic and improve the\nQuality of Experience (QoE) for upcoming B5G/6G applications, in this dissertation,\nthe author developed three research. First, the author developed a system for\nscaling the network function capacity to handle massive traffic from B5G/6G\napplications. Second, the author ensures the Quality of Service (QoS) for 5G\napplications. The solutions aim to improve the QoS of 5G applications, such as\nreducing delay and ensuring sufficient throughput for different 5G services.\nFinally, the author optimized the QoE for real-time B5G/6G applications like\nDigital twin (DT) and Virtual/Augmented Reality (VR/AR). The author uses a metric\ncalled Age of Information (AoI) to measure QoE in B5G/6G applications and solve\nthe traffic routing problem to ensure QoE.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_81_dissertation_number_13":{"attribute_name":"学位授与番号","attribute_value_mlt":[{"subitem_dissertationnumber":"甲第541号"}]},"item_81_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.15118/0002000335","subitem_identifier_reg_type":"JaLC"}]},"item_81_text_12":{"attribute_name":"学位の種別","attribute_value_mlt":[{"subitem_text_language":"ja","subitem_text_value":"課程博士"}]},"item_81_text_14":{"attribute_name":"報告番号","attribute_value_mlt":[{"subitem_text_language":"ja","subitem_text_value":"甲第541号"}]},"item_81_text_15":{"attribute_name":"学位記番号","attribute_value_mlt":[{"subitem_text_language":"ja","subitem_text_value":"博甲第541号"}]},"item_81_text_16":{"attribute_name":"研究科・専攻","attribute_value_mlt":[{"subitem_text_language":"ja","subitem_text_value":"工学研究科"}]},"item_81_version_type_24":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorAffiliations":[{"affiliationNames":[{"affiliationName":"室蘭工業大学","affiliationNameLang":"ja"},{"affiliationName":"Muroran Institute of Technology","affiliationNameLang":"en"}]}],"creatorNames":[{"creatorName":"CHEN, ZHENKE","creatorNameLang":"en"}],"familyNames":[{"familyName":"CHEN","familyNameLang":"en"}],"givenNames":[{"givenName":"ZHENKE","givenNameLang":"en"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","date":[{"dateType":"Available","dateValue":"2025-06-11"}],"filename":"A541.pdf","filesize":[{"value":"3 MB"}],"format":"application/pdf","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://muroran-it.repo.nii.ac.jp/record/2000335/files/A541.pdf"},"version_id":"ce094adf-ab86-4d8f-b548-fbe733e37e53"},{"accessrole":"open_access","date":[{"dateType":"Available","dateValue":"2025-06-11"}],"filename":"A541_summary.pdf","filesize":[{"value":"116 KB"}],"format":"application/pdf","mimetype":"application/pdf","url":{"objectType":"abstract","url":"https://muroran-it.repo.nii.ac.jp/record/2000335/files/A541_summary.pdf"},"version_id":"7545bbdf-3409-409b-b8a0-f25143087f18"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"doctoral thesis","resourceuri":"http://purl.org/coar/resource_type/c_db06"}]},"item_title":"Dynamic Scaling and Real-Time Scheduling in Network Function Virtualization for Beyond 5G Networks","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Dynamic Scaling and Real-Time Scheduling in Network Function Virtualization for Beyond 5G Networks","subitem_title_language":"en"},{"subitem_title":"Beyond 5Gネットワークにおけるネットワーク機能仮想化の動的スケーリングとリアルタイムスケジューリング","subitem_title_language":"ja"}]},"item_type_id":"81","owner":"20","path":["227"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2025-06-11"},"publish_date":"2025-06-11","publish_status":"0","recid":"2000335","relation_version_is_last":true,"title":["Dynamic Scaling and Real-Time Scheduling in Network Function Virtualization for Beyond 5G Networks"],"weko_creator_id":"20","weko_shared_id":-1},"updated":"2025-06-11T06:20:22.905590+00:00"}