{"id":"https://openalex.org/W3126410340","doi":"https://doi.org/10.1109/twc.2021.3056503","title":"Elastic FemtoCaching: Scale, Cache, and Route","display_name":"Elastic FemtoCaching: Scale, Cache, and Route","publication_year":2021,"publication_date":"2021-02-10","ids":{"openalex":"https://openalex.org/W3126410340","doi":"https://doi.org/10.1109/twc.2021.3056503","mag":"3126410340"},"language":"en","primary_location":{"id":"doi:10.1109/twc.2021.3056503","is_oa":false,"landing_page_url":"https://doi.org/10.1109/twc.2021.3056503","pdf_url":null,"source":{"id":"https://openalex.org/S63459445","display_name":"IEEE Transactions on Wireless Communications","issn_l":"1536-1276","issn":["1536-1276","1558-2248"],"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 Wireless Communications","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"http://resolver.tudelft.nl/uuid:0b551ef5-cdc8-4535-8e7b-145716d8ffa0","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5049511446","display_name":"Jeongho Kwak","orcid":"https://orcid.org/0000-0002-5737-0665"},"institutions":[{"id":"https://openalex.org/I193352282","display_name":"Daegu Gyeongbuk Institute of Science and Technology","ror":"https://ror.org/03frjya69","country_code":"KR","type":"education","lineage":["https://openalex.org/I193352282"]}],"countries":["KR"],"is_corresponding":true,"raw_author_name":"Jeongho Kwak","raw_affiliation_strings":["Department of Information and Communication Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, South Korea"],"raw_orcid":"https://orcid.org/0000-0002-5737-0665","affiliations":[{"raw_affiliation_string":"Department of Information and Communication Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, South Korea","institution_ids":["https://openalex.org/I193352282"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5070393786","display_name":"Georgios S. Paschos","orcid":"https://orcid.org/0000-0002-5922-1612"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Georgios Paschos","raw_affiliation_strings":["Amazon, Inc., Luxembourg, Luxembourg"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Amazon, Inc., Luxembourg, Luxembourg","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5044138533","display_name":"George Iosifidis","orcid":"https://orcid.org/0000-0003-1001-2323"},"institutions":[{"id":"https://openalex.org/I98358874","display_name":"Delft University of Technology","ror":"https://ror.org/02e2c7k09","country_code":"NL","type":"education","lineage":["https://openalex.org/I98358874"]}],"countries":["NL"],"is_corresponding":false,"raw_author_name":"George Iosifidis","raw_affiliation_strings":["Department of Electrical Engineering, Delft University of Technology, Delft, The Netherlands"],"raw_orcid":"https://orcid.org/0000-0003-1001-2323","affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Delft University of Technology, Delft, The Netherlands","institution_ids":["https://openalex.org/I98358874"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5049511446"],"corresponding_institution_ids":["https://openalex.org/I193352282"],"apc_list":null,"apc_paid":null,"fwci":1.7614,"has_fulltext":false,"cited_by_count":12,"citation_normalized_percentile":{"value":0.84925564,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":91,"max":98},"biblio":{"volume":"20","issue":"7","first_page":"4174","last_page":"4189"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11478","display_name":"Caching and Content Delivery","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/T11478","display_name":"Caching and Content Delivery","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/T10796","display_name":"Cooperative Communication and Network Coding","score":0.989300012588501,"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/T11409","display_name":"Advanced Wireless Network Optimization","score":0.9753999710083008,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.8692286610603333},{"id":"https://openalex.org/keywords/cache","display_name":"Cache","score":0.8411529064178467},{"id":"https://openalex.org/keywords/lease","display_name":"Lease","score":0.5165154337882996},{"id":"https://openalex.org/keywords/leverage","display_name":"Leverage (statistics)","score":0.47817355394363403},{"id":"https://openalex.org/keywords/cache-algorithms","display_name":"Cache algorithms","score":0.47454914450645447},{"id":"https://openalex.org/keywords/smart-cache","display_name":"Smart Cache","score":0.471835196018219},{"id":"https://openalex.org/keywords/cpu-cache","display_name":"CPU cache","score":0.42808443307876587},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.405988872051239}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8692286610603333},{"id":"https://openalex.org/C115537543","wikidata":"https://www.wikidata.org/wiki/Q165596","display_name":"Cache","level":2,"score":0.8411529064178467},{"id":"https://openalex.org/C2779614062","wikidata":"https://www.wikidata.org/wiki/Q716894","display_name":"Lease","level":2,"score":0.5165154337882996},{"id":"https://openalex.org/C153083717","wikidata":"https://www.wikidata.org/wiki/Q6535263","display_name":"Leverage (statistics)","level":2,"score":0.47817355394363403},{"id":"https://openalex.org/C38556500","wikidata":"https://www.wikidata.org/wiki/Q13404475","display_name":"Cache algorithms","level":4,"score":0.47454914450645447},{"id":"https://openalex.org/C167713795","wikidata":"https://www.wikidata.org/wiki/Q352090","display_name":"Smart Cache","level":5,"score":0.471835196018219},{"id":"https://openalex.org/C189783530","wikidata":"https://www.wikidata.org/wiki/Q352090","display_name":"CPU cache","level":3,"score":0.42808443307876587},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.405988872051239},{"id":"https://openalex.org/C17744445","wikidata":"https://www.wikidata.org/wiki/Q36442","display_name":"Political science","level":0,"score":0.0},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.0},{"id":"https://openalex.org/C199539241","wikidata":"https://www.wikidata.org/wiki/Q7748","display_name":"Law","level":1,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1109/twc.2021.3056503","is_oa":false,"landing_page_url":"https://doi.org/10.1109/twc.2021.3056503","pdf_url":null,"source":{"id":"https://openalex.org/S63459445","display_name":"IEEE Transactions on Wireless Communications","issn_l":"1536-1276","issn":["1536-1276","1558-2248"],"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 Wireless Communications","raw_type":"journal-article"},{"id":"pmh:oai:tudelft.nl:uuid:0b551ef5-cdc8-4535-8e7b-145716d8ffa0","is_oa":true,"landing_page_url":"http://resolver.tudelft.nl/uuid:0b551ef5-cdc8-4535-8e7b-145716d8ffa0","pdf_url":"http://resolver.tudelft.nl/uuid:0b551ef5-cdc8-4535-8e7b-145716d8ffa0","source":{"id":"https://openalex.org/S4306400906","display_name":"Research Repository (Delft University of Technology)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I98358874","host_organization_name":"Delft University of Technology","host_organization_lineage":["https://openalex.org/I98358874"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"journal article"},{"id":"pmh:oai:tara.tcd.ie:2262/98558","is_oa":false,"landing_page_url":"http://hdl.handle.net/2262/98558","pdf_url":null,"source":{"id":"https://openalex.org/S4306400387","display_name":"Trinity's Access to Research Output (TARA) (Trinity College Dublin)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205274468","host_organization_name":"Trinity College Dublin","host_organization_lineage":["https://openalex.org/I205274468"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Journal Article"}],"best_oa_location":{"id":"pmh:oai:tudelft.nl:uuid:0b551ef5-cdc8-4535-8e7b-145716d8ffa0","is_oa":true,"landing_page_url":"http://resolver.tudelft.nl/uuid:0b551ef5-cdc8-4535-8e7b-145716d8ffa0","pdf_url":"http://resolver.tudelft.nl/uuid:0b551ef5-cdc8-4535-8e7b-145716d8ffa0","source":{"id":"https://openalex.org/S4306400906","display_name":"Research Repository (Delft University of Technology)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I98358874","host_organization_name":"Delft University of Technology","host_organization_lineage":["https://openalex.org/I98358874"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"journal article"},"sustainable_development_goals":[{"score":0.6399999856948853,"display_name":"Sustainable cities and communities","id":"https://metadata.un.org/sdg/11"}],"awards":[{"id":"https://openalex.org/G2301514967","display_name":null,"funder_award_id":"2019R1F1A1062291","funder_id":"https://openalex.org/F4320322120","funder_display_name":"National Research Foundation of Korea"},{"id":"https://openalex.org/G2406092791","display_name":null,"funder_award_id":"101017109","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"},{"id":"https://openalex.org/G508382841","display_name":null,"funder_award_id":"2019R1F1A1062291","funder_id":"https://openalex.org/F4320322030","funder_display_name":"Ministry of Science, ICT and Future Planning"},{"id":"https://openalex.org/G7448753368","display_name":null,"funder_award_id":"101017109 (DAEMON)","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"}],"funders":[{"id":"https://openalex.org/F4320320300","display_name":"European Commission","ror":"https://ror.org/00k4n6c32"},{"id":"https://openalex.org/F4320320671","display_name":"National Research Foundation","ror":"https://ror.org/05s0g1g46"},{"id":"https://openalex.org/F4320322030","display_name":"Ministry of Science, ICT and Future Planning","ror":"https://ror.org/032e49973"},{"id":"https://openalex.org/F4320322120","display_name":"National Research Foundation of Korea","ror":"https://ror.org/013aysd81"},{"id":"https://openalex.org/F4320326308","display_name":"Daegu Gyeongbuk Institute of Science and Technology","ror":"https://ror.org/03frjya69"},{"id":"https://openalex.org/F4320328359","display_name":"Ministry of Science and ICT, South Korea","ror":"https://ror.org/01wpjm123"}],"has_content":{"grobid_xml":false,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W3126410340.pdf"},"referenced_works_count":38,"referenced_works":["https://openalex.org/W1551092876","https://openalex.org/W1607044975","https://openalex.org/W1767905185","https://openalex.org/W1972738071","https://openalex.org/W2029482994","https://openalex.org/W2038007012","https://openalex.org/W2051773775","https://openalex.org/W2058677708","https://openalex.org/W2060176666","https://openalex.org/W2061442141","https://openalex.org/W2086664582","https://openalex.org/W2090481988","https://openalex.org/W2110519532","https://openalex.org/W2137152139","https://openalex.org/W2138993731","https://openalex.org/W2147524058","https://openalex.org/W2279407724","https://openalex.org/W2294354713","https://openalex.org/W2563036668","https://openalex.org/W2746390786","https://openalex.org/W2794138919","https://openalex.org/W2803681848","https://openalex.org/W2911361087","https://openalex.org/W2940499853","https://openalex.org/W2946043566","https://openalex.org/W2956416002","https://openalex.org/W2962801070","https://openalex.org/W2963531342","https://openalex.org/W2963873918","https://openalex.org/W2966982543","https://openalex.org/W3004172495","https://openalex.org/W3005611113","https://openalex.org/W3013381883","https://openalex.org/W3014620413","https://openalex.org/W3014722646","https://openalex.org/W3033563497","https://openalex.org/W4250589301","https://openalex.org/W4297972233"],"related_works":["https://openalex.org/W2031173804","https://openalex.org/W2114386333","https://openalex.org/W2509523906","https://openalex.org/W2363769136","https://openalex.org/W2148571123","https://openalex.org/W2109715593","https://openalex.org/W2012518269","https://openalex.org/W1918294866","https://openalex.org/W4234542536","https://openalex.org/W57688818"],"abstract_inverted_index":{"The":[0,87],"advent":[1],"of":[2,31,58,139,149,205,212],"elastic":[3],"Content":[4,9],"Delivery":[5],"Networks":[6],"(CDNs)":[7],"enable":[8],"Providers":[10],"(CPs)":[11],"to":[12,27,44,54,82,90,106,124,184,234],"lease":[13,182,216],"cache":[14,50,70,181,215,237],"capacity":[15],"on":[16],"demand":[17],"and":[18,22,62,74,108,121,143,209],"at":[19],"different":[20,112],"cloud":[21],"edge":[23],"locations":[24],"in":[25,39,49,52,77,80,110,160,240],"order":[26,53,81],"enhance":[28],"the":[29,92,98,117,147,161,165,192,196,202,206,213,227],"quality":[30],"their":[32],"services.":[33,86],"This":[34],"article":[35],"addresses":[36],"key":[37],"challenges":[38],"this":[40,175],"context,":[41],"namely":[42],"how":[43],"invest":[45],"an":[46,93,155],"available":[47],"budget":[48],"space":[51],"match":[55],"spatio-temporal":[56],"fluctuations":[57],"demand,":[59],"wireless":[60,78],"environment":[61],"storage":[63],"prices.":[64],"Specifically,":[65],"we":[66,153,177,224],"jointly":[67],"consider":[68],"dynamic":[69],"rental,":[71],"content":[72],"placement,":[73],"request-cache":[75],"association":[76],"scenarios":[79],"provide":[83,154],"just-in-time":[84],"CDN":[85],"goal":[88],"is":[89],"maximize":[91],"aggregate":[94],"utility":[95,232],"metric":[96],"for":[97],"CP":[99],"that":[100,191,226],"captures":[101],"both":[102],"service":[103],"benefits":[104],"due":[105],"caching":[107],"fairness":[109],"servicing":[111],"end":[113],"users.":[114],"We":[115,189],"leverage":[116],"Lyapunov":[118],"drift-minus-benefit":[119],"technique":[120],"Jensen's":[122],"inequality":[123],"transform":[125],"our":[126],"infinite":[127],"horizon":[128],"problem":[129],"into":[130],"hour-by-hour":[131],"subproblems":[132],"which":[133],"can":[134],"be":[135],"solved":[136],"without":[137],"knowledge":[138],"future":[140],"file":[141],"popularity":[142],"transmission":[144],"rates.":[145],"For":[146],"case":[148],"non-overlapping":[150],"small":[151],"cells,":[152],"optimal":[156],"subproblem":[157,166],"solution.":[158,188],"However,":[159],"general":[162],"overlapping":[163],"case,":[164,176],"becomes":[167],"a":[168,179,186,241],"mixed":[169],"integer":[170],"non-linear":[171],"program":[172],"(MINLP).":[173],"In":[174],"employ":[178],"randomized":[180,214],"method":[183],"derive":[185],"scalable":[187],"show":[190],"proposed":[193,228],"algorithm":[194,229],"guarantees":[195],"theoretical":[197],"performance":[198],"bound":[199],"by":[200],"exploiting":[201],"submodularity":[203],"property":[204,211],"objective":[207],"function":[208],"pick-and-compare":[210],"method.":[217],"Finally,":[218],"via":[219],"real":[220],"dataset":[221],"driven":[222],"simulations,":[223],"find":[225],"achieves":[230],"154%":[231],"compared":[233],"similar":[235],"static":[236],"storage-based":[238],"algorithms":[239],"representative":[242],"urban":[243],"topology.":[244]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":5},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":2}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2021-02-15T00:00:00"}
