{"id":"https://openalex.org/W3041008884","doi":"https://doi.org/10.1109/tnsm.2020.3007712","title":"Virtual Network Function Allocation to Maximize Continuous Available Time of Service Function Chains With Availability Schedule","display_name":"Virtual Network Function Allocation to Maximize Continuous Available Time of Service Function Chains With Availability Schedule","publication_year":2020,"publication_date":"2020-07-07","ids":{"openalex":"https://openalex.org/W3041008884","doi":"https://doi.org/10.1109/tnsm.2020.3007712","mag":"3041008884"},"language":"en","primary_location":{"id":"doi:10.1109/tnsm.2020.3007712","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tnsm.2020.3007712","pdf_url":null,"source":{"id":"https://openalex.org/S173527311","display_name":"IEEE Transactions on Network and Service Management","issn_l":"1932-4537","issn":["1932-4537","2373-7379"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Network and Service Management","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5046633345","display_name":"Rui Kang","orcid":"https://orcid.org/0000-0002-1564-8753"},"institutions":[{"id":"https://openalex.org/I22299242","display_name":"Kyoto University","ror":"https://ror.org/02kpeqv85","country_code":"JP","type":"education","lineage":["https://openalex.org/I22299242"]},{"id":"https://openalex.org/I39012071","display_name":"Kyoto College of Graduate Studies for Informatics","ror":"https://ror.org/05mzj8a56","country_code":"JP","type":"education","lineage":["https://openalex.org/I39012071"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Rui Kang","raw_affiliation_strings":["Graduate School of Informatics, Kyoto University, Kyoto, Japan","Graduate School of Informatics Kyoto University Kyoto Japan"],"raw_orcid":"https://orcid.org/0000-0002-1564-8753","affiliations":[{"raw_affiliation_string":"Graduate School of Informatics, Kyoto University, Kyoto, Japan","institution_ids":["https://openalex.org/I22299242","https://openalex.org/I39012071"]},{"raw_affiliation_string":"Graduate School of Informatics Kyoto University Kyoto Japan","institution_ids":["https://openalex.org/I22299242","https://openalex.org/I39012071"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5048011832","display_name":"Fujun He","orcid":"https://orcid.org/0000-0002-2860-2930"},"institutions":[{"id":"https://openalex.org/I22299242","display_name":"Kyoto University","ror":"https://ror.org/02kpeqv85","country_code":"JP","type":"education","lineage":["https://openalex.org/I22299242"]},{"id":"https://openalex.org/I39012071","display_name":"Kyoto College of Graduate Studies for Informatics","ror":"https://ror.org/05mzj8a56","country_code":"JP","type":"education","lineage":["https://openalex.org/I39012071"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Fujun He","raw_affiliation_strings":["Graduate School of Informatics, Kyoto University, Kyoto, Japan","Graduate School of Informatics Kyoto University Kyoto Japan"],"raw_orcid":"https://orcid.org/0000-0002-2860-2930","affiliations":[{"raw_affiliation_string":"Graduate School of Informatics, Kyoto University, Kyoto, Japan","institution_ids":["https://openalex.org/I22299242","https://openalex.org/I39012071"]},{"raw_affiliation_string":"Graduate School of Informatics Kyoto University Kyoto Japan","institution_ids":["https://openalex.org/I22299242","https://openalex.org/I39012071"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5067787810","display_name":"Takehiro Sato","orcid":"https://orcid.org/0000-0002-6253-0942"},"institutions":[{"id":"https://openalex.org/I22299242","display_name":"Kyoto University","ror":"https://ror.org/02kpeqv85","country_code":"JP","type":"education","lineage":["https://openalex.org/I22299242"]},{"id":"https://openalex.org/I39012071","display_name":"Kyoto College of Graduate Studies for Informatics","ror":"https://ror.org/05mzj8a56","country_code":"JP","type":"education","lineage":["https://openalex.org/I39012071"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Takehiro Sato","raw_affiliation_strings":["Graduate School of Informatics, Kyoto University, Kyoto, Japan","Graduate School of Informatics Kyoto University Kyoto Japan"],"raw_orcid":"https://orcid.org/0000-0002-6253-0942","affiliations":[{"raw_affiliation_string":"Graduate School of Informatics, Kyoto University, Kyoto, Japan","institution_ids":["https://openalex.org/I22299242","https://openalex.org/I39012071"]},{"raw_affiliation_string":"Graduate School of Informatics Kyoto University Kyoto Japan","institution_ids":["https://openalex.org/I22299242","https://openalex.org/I39012071"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5047825950","display_name":"Eiji Oki","orcid":"https://orcid.org/0000-0003-2177-5027"},"institutions":[{"id":"https://openalex.org/I22299242","display_name":"Kyoto University","ror":"https://ror.org/02kpeqv85","country_code":"JP","type":"education","lineage":["https://openalex.org/I22299242"]},{"id":"https://openalex.org/I39012071","display_name":"Kyoto College of Graduate Studies for Informatics","ror":"https://ror.org/05mzj8a56","country_code":"JP","type":"education","lineage":["https://openalex.org/I39012071"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Eiji Oki","raw_affiliation_strings":["Graduate School of Informatics, Kyoto University, Kyoto, Japan","Graduate School of Informatics Kyoto University Kyoto Japan"],"raw_orcid":"https://orcid.org/0000-0003-2177-5027","affiliations":[{"raw_affiliation_string":"Graduate School of Informatics, Kyoto University, Kyoto, Japan","institution_ids":["https://openalex.org/I22299242","https://openalex.org/I39012071"]},{"raw_affiliation_string":"Graduate School of Informatics Kyoto University Kyoto Japan","institution_ids":["https://openalex.org/I22299242","https://openalex.org/I39012071"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":2.9524,"has_fulltext":false,"cited_by_count":26,"citation_normalized_percentile":{"value":0.91179536,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":91,"max":99},"biblio":{"volume":"18","issue":"2","first_page":"1556","last_page":"1570"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10714","display_name":"Software-Defined Networks and 5G","score":1.0,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10714","display_name":"Software-Defined Networks and 5G","score":1.0,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10101","display_name":"Cloud Computing and Resource Management","score":0.9951000213623047,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10138","display_name":"Network Traffic and Congestion Control","score":0.9951000213623047,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.8536849021911621},{"id":"https://openalex.org/keywords/unavailability","display_name":"Unavailability","score":0.8341838121414185},{"id":"https://openalex.org/keywords/schedule","display_name":"Schedule","score":0.6635520458221436},{"id":"https://openalex.org/keywords/integer-programming","display_name":"Integer programming","score":0.6007246375083923},{"id":"https://openalex.org/keywords/virtual-network","display_name":"Virtual network","score":0.5542131662368774},{"id":"https://openalex.org/keywords/heuristic","display_name":"Heuristic","score":0.5038005709648132},{"id":"https://openalex.org/keywords/linear-programming","display_name":"Linear programming","score":0.49390894174575806},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.48499223589897156},{"id":"https://openalex.org/keywords/distributed-computing","display_name":"Distributed computing","score":0.43917202949523926},{"id":"https://openalex.org/keywords/function","display_name":"Function (biology)","score":0.4331427812576294},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.1969248354434967}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8536849021911621},{"id":"https://openalex.org/C2780505938","wikidata":"https://www.wikidata.org/wiki/Q17093282","display_name":"Unavailability","level":2,"score":0.8341838121414185},{"id":"https://openalex.org/C68387754","wikidata":"https://www.wikidata.org/wiki/Q7271585","display_name":"Schedule","level":2,"score":0.6635520458221436},{"id":"https://openalex.org/C56086750","wikidata":"https://www.wikidata.org/wiki/Q6042592","display_name":"Integer programming","level":2,"score":0.6007246375083923},{"id":"https://openalex.org/C2776874963","wikidata":"https://www.wikidata.org/wiki/Q4112081","display_name":"Virtual network","level":2,"score":0.5542131662368774},{"id":"https://openalex.org/C173801870","wikidata":"https://www.wikidata.org/wiki/Q201413","display_name":"Heuristic","level":2,"score":0.5038005709648132},{"id":"https://openalex.org/C41045048","wikidata":"https://www.wikidata.org/wiki/Q202843","display_name":"Linear programming","level":2,"score":0.49390894174575806},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.48499223589897156},{"id":"https://openalex.org/C120314980","wikidata":"https://www.wikidata.org/wiki/Q180634","display_name":"Distributed computing","level":1,"score":0.43917202949523926},{"id":"https://openalex.org/C14036430","wikidata":"https://www.wikidata.org/wiki/Q3736076","display_name":"Function (biology)","level":2,"score":0.4331427812576294},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.1969248354434967},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.0},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.0},{"id":"https://openalex.org/C200601418","wikidata":"https://www.wikidata.org/wiki/Q2193887","display_name":"Reliability engineering","level":1,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C78458016","wikidata":"https://www.wikidata.org/wiki/Q840400","display_name":"Evolutionary biology","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tnsm.2020.3007712","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tnsm.2020.3007712","pdf_url":null,"source":{"id":"https://openalex.org/S173527311","display_name":"IEEE Transactions on Network and Service Management","issn_l":"1932-4537","issn":["1932-4537","2373-7379"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Network and Service Management","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Peace, Justice and strong institutions","score":0.5299999713897705,"id":"https://metadata.un.org/sdg/16"}],"awards":[{"id":"https://openalex.org/G1642938526","display_name":"Service-chain mapping and scheduling scheme considering uncertainties in processing performance","funder_award_id":"21H03426","funder_id":"https://openalex.org/F4320334764","funder_display_name":"Japan Society for the Promotion of Science"},{"id":"https://openalex.org/G5842560449","display_name":"Distributed Placement of Virtual Network Functions in Edge Networks","funder_award_id":"22KJ1685","funder_id":"https://openalex.org/F4320334764","funder_display_name":"Japan Society for the Promotion of Science"},{"id":"https://openalex.org/G6672117657","display_name":"Network control scheme to suppress spectrum fragmentation in elastic optical networks","funder_award_id":"15K00116","funder_id":"https://openalex.org/F4320334764","funder_display_name":"Japan Society for the Promotion of Science"},{"id":"https://openalex.org/G7873054827","display_name":"Control scheme to control reliable optical networks utilizing wavelength spectrum resources","funder_award_id":"18H03230","funder_id":"https://openalex.org/F4320334764","funder_display_name":"Japan Society for the Promotion of Science"}],"funders":[{"id":"https://openalex.org/F4320334764","display_name":"Japan Society for the Promotion of Science","ror":"https://ror.org/00hhkn466"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":25,"referenced_works":["https://openalex.org/W2011039300","https://openalex.org/W2024060531","https://openalex.org/W2097571405","https://openalex.org/W2118578357","https://openalex.org/W2142224489","https://openalex.org/W2289096564","https://openalex.org/W2401610261","https://openalex.org/W2500898769","https://openalex.org/W2547270753","https://openalex.org/W2613616588","https://openalex.org/W2615618921","https://openalex.org/W2784296952","https://openalex.org/W2790045047","https://openalex.org/W2891148312","https://openalex.org/W2897196169","https://openalex.org/W2897748361","https://openalex.org/W2911389110","https://openalex.org/W2943422123","https://openalex.org/W2967858304","https://openalex.org/W3015825841","https://openalex.org/W3016017978","https://openalex.org/W3034938232","https://openalex.org/W3149604617","https://openalex.org/W4251616545","https://openalex.org/W4255712498"],"related_works":["https://openalex.org/W4237235066","https://openalex.org/W2983685817","https://openalex.org/W2011675579","https://openalex.org/W4285278887","https://openalex.org/W2995925505","https://openalex.org/W134783735","https://openalex.org/W2365237642","https://openalex.org/W3116484972","https://openalex.org/W2941986668","https://openalex.org/W4232431455"],"abstract_inverted_index":{"This":[0],"paper":[1],"proposes":[2],"an":[3,91],"optimization":[4],"model":[5,36,56,89,161,186],"to":[6,20,139,150],"derive":[7],"the":[8,22,43,50,76,87,98,102,117,121,129,135,152,159,163,184,194,206],"virtual":[9,46],"network":[10],"function":[11,28],"(VNF)":[12],"allocation":[13,59,123],"of":[14,26,45,52,63,78,100,105,120,131,167,191,197],"time":[15,25,64,83,109,166],"slots":[16,65,110],"in":[17,31,60,81,111,141],"sequence":[18],"aiming":[19],"maximize":[21],"continuous":[23,107,164],"available":[24,108,165],"service":[27,38],"chains":[29],"(SFCs)":[30],"a":[32,61,68,142,147,189,210],"network.":[33],"The":[34,54,199],"proposed":[35,55,88,160,185],"suppresses":[37],"interruptions":[39],"otherwise":[40],"created":[41],"by":[42],"unavailability":[44,177],"machines":[47],"(VMs)":[48],"and":[49],"reallocation":[51],"VNFs.":[53],"computes":[57],"VNF":[58,122,179],"series":[62],"based":[66],"on":[67,75],"VM":[69,80,176],"availability":[70,77],"schedule,":[71],"which":[72,173],"provides":[73],"information":[74],"each":[79,82,112],"slot.":[84],"We":[85,114,145,181],"formulate":[86],"as":[90],"integer":[92],"linear":[93],"programming":[94],"(ILP)":[95],"problem":[96,124,133,136],"with":[97,170,188,209],"goal":[99],"maximizing":[101],"minimum":[103],"number":[104],"longest":[106],"SFC.":[113],"prove":[115],"that":[116,158,183],"decision":[118],"version":[119],"(VNFA)":[125],"is":[126,137,203],"NP-complete.":[127],"As":[128],"size":[130],"ILP":[132,207],"increases,":[134],"difficult":[138],"solve":[140,151],"practical":[143],"time.":[144],"develop":[146],"heuristic":[148,201],"algorithm":[149,202],"VNFA":[153],"problem.":[154],"Numerical":[155],"results":[156],"show":[157],"improves":[162],"SFCs":[168],"compared":[169],"existing":[171],"models,":[172],"partially":[174],"consider":[175],"or":[178],"reallocation.":[180],"observe":[182],"together":[187],"consideration":[190],"routing":[192],"reduces":[193],"path":[195],"length":[196],"requests.":[198],"developed":[200],"faster":[204],"than":[205],"approach":[208],"limited":[211],"performance":[212],"penalty.":[213]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":3},{"year":2023,"cited_by_count":3},{"year":2022,"cited_by_count":6},{"year":2021,"cited_by_count":10},{"year":2020,"cited_by_count":3}],"updated_date":"2026-07-22T07:51:19.307946","created_date":"2025-10-10T00:00:00"}
