{"id":"https://openalex.org/W2946371207","doi":"https://doi.org/10.1109/jsac.2019.2916449","title":"Economical Caching for Scalable Videos in Cache-Enabled Heterogeneous Networks","display_name":"Economical Caching for Scalable Videos in Cache-Enabled Heterogeneous Networks","publication_year":2019,"publication_date":"2019-05-24","ids":{"openalex":"https://openalex.org/W2946371207","doi":"https://doi.org/10.1109/jsac.2019.2916449","mag":"2946371207"},"language":"en","primary_location":{"id":"doi:10.1109/jsac.2019.2916449","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jsac.2019.2916449","pdf_url":null,"source":{"id":"https://openalex.org/S90422530","display_name":"IEEE Journal on Selected Areas in Communications","issn_l":"0733-8716","issn":["0733-8716","1558-0008"],"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 Journal on Selected Areas in Communications","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/A5057094640","display_name":"Xuewei Zhang","orcid":"https://orcid.org/0000-0002-3078-8850"},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Xuewei Zhang","raw_affiliation_strings":["School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, China"],"affiliations":[{"raw_affiliation_string":"School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5086282554","display_name":"Tiejun Lv","orcid":"https://orcid.org/0000-0003-4127-2419"},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Tiejun Lv","raw_affiliation_strings":["School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, China"],"affiliations":[{"raw_affiliation_string":"School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5043282231","display_name":"Yuan Ren","orcid":"https://orcid.org/0000-0003-2520-8388"},"institutions":[{"id":"https://openalex.org/I4210136859","display_name":"Xi\u2019an University of Posts and Telecommunications","ror":"https://ror.org/04jn0td46","country_code":"CN","type":"education","lineage":["https://openalex.org/I4210136859"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yuan Ren","raw_affiliation_strings":["School of Communication and Information Engineering, Xi\u2019an University of Posts and Telecommunications (XUPT), Xi\u2019an, China"],"affiliations":[{"raw_affiliation_string":"School of Communication and Information Engineering, Xi\u2019an University of Posts and Telecommunications (XUPT), Xi\u2019an, China","institution_ids":["https://openalex.org/I4210136859"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5021527965","display_name":"Wei Ni","orcid":"https://orcid.org/0000-0003-0780-4637"},"institutions":[{"id":"https://openalex.org/I4210101388","display_name":"Health Sciences and Nutrition","ror":"https://ror.org/0152bt112","country_code":"AU","type":"facility","lineage":["https://openalex.org/I1292875679","https://openalex.org/I2801453606","https://openalex.org/I4210101388","https://openalex.org/I4387156119"]},{"id":"https://openalex.org/I42894916","display_name":"Data61","ror":"https://ror.org/03q397159","country_code":"AU","type":"other","lineage":["https://openalex.org/I1292875679","https://openalex.org/I2801453606","https://openalex.org/I42894916","https://openalex.org/I4387156119"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Wei Ni","raw_affiliation_strings":["Data61, Commonwealth Scientific and Industrial Research, Sydney, NSW, Australia"],"affiliations":[{"raw_affiliation_string":"Data61, Commonwealth Scientific and Industrial Research, Sydney, NSW, Australia","institution_ids":["https://openalex.org/I4210101388","https://openalex.org/I42894916"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5038087450","display_name":"Norman C. Beaulieu","orcid":"https://orcid.org/0000-0001-9233-219X"},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Norman C. Beaulieu","raw_affiliation_strings":["School of Information and Communication Engineering and the Beijing Key Laboratory of Network System Architecture and Convergence, Beijing University of Posts and Telecommunications, Beijing, China"],"affiliations":[{"raw_affiliation_string":"School of Information and Communication Engineering and the Beijing Key Laboratory of Network System Architecture and Convergence, Beijing University of Posts and Telecommunications, Beijing, China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5017544512","display_name":"Y. Jay Guo","orcid":"https://orcid.org/0000-0001-6008-9682"},"institutions":[{"id":"https://openalex.org/I114017466","display_name":"University of Technology Sydney","ror":"https://ror.org/03f0f6041","country_code":"AU","type":"education","lineage":["https://openalex.org/I114017466"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Y. Jay Guo","raw_affiliation_strings":["Global Big Data Technologies Centre, University of Technology Sydney, Ultimo, NSW, Australia"],"affiliations":[{"raw_affiliation_string":"Global Big Data Technologies Centre, University of Technology Sydney, Ultimo, NSW, Australia","institution_ids":["https://openalex.org/I114017466"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":6,"corresponding_author_ids":["https://openalex.org/A5057094640"],"corresponding_institution_ids":["https://openalex.org/I139759216"],"apc_list":null,"apc_paid":null,"fwci":4.0845,"has_fulltext":false,"cited_by_count":29,"citation_normalized_percentile":{"value":0.94427003,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":90,"max":99},"biblio":{"volume":"37","issue":"7","first_page":"1608","last_page":"1621"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11478","display_name":"Caching and Content Delivery","score":0.9998999834060669,"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":0.9998999834060669,"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":0.9926000237464905,"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":0.9811999797821045,"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":0.8819462656974792},{"id":"https://openalex.org/keywords/cache","display_name":"Cache","score":0.7692261934280396},{"id":"https://openalex.org/keywords/base-station","display_name":"Base station","score":0.5337067246437073},{"id":"https://openalex.org/keywords/scalability","display_name":"Scalability","score":0.525192141532898},{"id":"https://openalex.org/keywords/optimization-problem","display_name":"Optimization problem","score":0.522818922996521},{"id":"https://openalex.org/keywords/greedy-algorithm","display_name":"Greedy algorithm","score":0.44494277238845825},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.382373183965683},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.2840210497379303}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8819462656974792},{"id":"https://openalex.org/C115537543","wikidata":"https://www.wikidata.org/wiki/Q165596","display_name":"Cache","level":2,"score":0.7692261934280396},{"id":"https://openalex.org/C68649174","wikidata":"https://www.wikidata.org/wiki/Q1379116","display_name":"Base station","level":2,"score":0.5337067246437073},{"id":"https://openalex.org/C48044578","wikidata":"https://www.wikidata.org/wiki/Q727490","display_name":"Scalability","level":2,"score":0.525192141532898},{"id":"https://openalex.org/C137836250","wikidata":"https://www.wikidata.org/wiki/Q984063","display_name":"Optimization problem","level":2,"score":0.522818922996521},{"id":"https://openalex.org/C51823790","wikidata":"https://www.wikidata.org/wiki/Q504353","display_name":"Greedy algorithm","level":2,"score":0.44494277238845825},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.382373183965683},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.2840210497379303},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/jsac.2019.2916449","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jsac.2019.2916449","pdf_url":null,"source":{"id":"https://openalex.org/S90422530","display_name":"IEEE Journal on Selected Areas in Communications","issn_l":"0733-8716","issn":["0733-8716","1558-0008"],"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 Journal on Selected Areas in Communications","raw_type":"journal-article"},{"id":"pmh:oai:opus.lib.uts.edu.au:10453/135190","is_oa":false,"landing_page_url":"http://hdl.handle.net/10453/135190","pdf_url":null,"source":{"id":"https://openalex.org/S4306401357","display_name":"UTS ePRESS (University of Technology Sydney)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I114017466","host_organization_name":"University of Technology Sydney","host_organization_lineage":["https://openalex.org/I114017466"],"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":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/9","score":0.41999998688697815,"display_name":"Industry, innovation and infrastructure"}],"awards":[{"id":"https://openalex.org/G6607030689","display_name":null,"funder_award_id":"61671072","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G7647418852","display_name":null,"funder_award_id":"61801382","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":44,"referenced_works":["https://openalex.org/W1919748448","https://openalex.org/W1970722330","https://openalex.org/W1972738071","https://openalex.org/W1991620090","https://openalex.org/W1994783589","https://openalex.org/W2003892785","https://openalex.org/W2085080593","https://openalex.org/W2112053513","https://openalex.org/W2172073677","https://openalex.org/W2213621529","https://openalex.org/W2258632262","https://openalex.org/W2300813249","https://openalex.org/W2321936408","https://openalex.org/W2336784746","https://openalex.org/W2344555256","https://openalex.org/W2345821518","https://openalex.org/W2413378857","https://openalex.org/W2435503387","https://openalex.org/W2460967409","https://openalex.org/W2521531759","https://openalex.org/W2522961195","https://openalex.org/W2604281498","https://openalex.org/W2612580893","https://openalex.org/W2613269360","https://openalex.org/W2739609899","https://openalex.org/W2757633303","https://openalex.org/W2793571972","https://openalex.org/W2797227322","https://openalex.org/W2806304687","https://openalex.org/W2807012911","https://openalex.org/W2809228156","https://openalex.org/W2962718958","https://openalex.org/W2962880523","https://openalex.org/W2963290290","https://openalex.org/W2963444094","https://openalex.org/W2963611429","https://openalex.org/W2963723102","https://openalex.org/W2963805754","https://openalex.org/W2963997272","https://openalex.org/W3100538838","https://openalex.org/W3100640070","https://openalex.org/W3103833233","https://openalex.org/W3104205931","https://openalex.org/W3104804075"],"related_works":["https://openalex.org/W4387497383","https://openalex.org/W3183948672","https://openalex.org/W3173606202","https://openalex.org/W3110381201","https://openalex.org/W2948807893","https://openalex.org/W2935909890","https://openalex.org/W2778153218","https://openalex.org/W2758277628","https://openalex.org/W1531601525","https://openalex.org/W4295990986"],"abstract_inverted_index":{"We":[0,81],"develop":[1],"the":[2,54,79,95,108,113,121,132,144,151,169,174,186,192,195,201,205,229,246,255,258,264,270,274],"optimal":[3,170],"economical":[4],"caching":[5,134,189,207,277],"schemes":[6,278],"in":[7],"cache-enabled":[8],"heterogeneous":[9],"networks,":[10],"while":[11],"delivering":[12],"multimedia":[13],"video":[14,26,30],"services":[15],"with":[16,124],"personalized":[17],"viewing":[18],"qualities":[19],"to":[20,32,49,69,78,106,157,184,263],"mobile":[21],"users.":[22],"By":[23],"applying":[24],"scalable":[25],"coding":[27],"(SVC),":[28],"each":[29,130,199],"file":[31],"be":[33,158],"requested":[34],"is":[35,102,136,141,164,214,221,234,250,279],"divided":[36,235],"into":[37,62,236],"one":[38],"base":[39,57],"layer":[40,133,188,202,206,267],"(BL)":[41],"and":[42,71,75,89,93,160,204],"several":[43],"enhancement":[44],"layers":[45],"(ELs).":[46],"In":[47,104,120,191],"order":[48,105],"assign":[50],"different":[51],"transmission":[52,87],"tasks,":[53],"serving":[55],"small-cell":[56],"stations":[58],"(SBSs)":[59],"are":[60,67,155,209,242],"grouped":[61],"$K$":[63],"clusters.":[64],"The":[65],"SBSs":[66],"able":[68],"cache":[70,126,196],"cooperatively":[72],"transmit":[73],"BL":[74],"EL":[76],"contents":[77],"user.":[80],"analytically":[82],"derive":[83],"expressions":[84],"for":[85,98,117,198],"successful":[86],"probability":[88],"ergodic":[90],"service":[91],"rate,":[92],"then":[94],"closed-form":[96],"expression":[97],"EConomical":[99],"Efficiency":[100],"(ECE)":[101],"obtained.":[103],"enhance":[107],"ECE":[109,114,231],"performance,":[110],"we":[111,177],"formulate":[112],"optimization":[115,153,248],"problems":[116],"two":[118,237,240],"cases.":[119],"first":[122],"case,":[123,194],"equal":[125],"size":[127,197],"equipped":[128],"at":[129],"SBS,":[131,200],"indicator":[135,208],"determined.":[137],"Since":[138],"this":[139,161,227],"problem":[140,163,213,233,249],"NP-hard,":[142],"after":[143],"l":[145],"<sub":[146],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[147],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">0</sub>":[148],"-norm":[149],"approximation,":[150],"discrete":[152],"variables":[154],"relaxed":[156,162,175],"continuous,":[159],"convex.":[165],"Next,":[166],"based":[167,181],"on":[168],"solution":[171],"derived":[172],"from":[173],"problem,":[176,219,228],"devise":[178],"a":[179,215],"greedy-strategy":[180],"heuristic":[182],"algorithm":[183],"achieve":[185],"near-optimal":[187],"indicators.":[190],"second":[193],"size,":[203],"jointly":[210],"optimized.":[211],"This":[212],"mixed":[216],"integer":[217],"programming":[218],"which":[220],"more":[222],"challenging.":[223],"To":[224],"effectively":[225],"solve":[226],"original":[230,247],"maximization":[232],"subproblems.":[238],"These":[239],"subproblems":[241],"iteratively":[243],"solved":[244],"until":[245],"convergent.":[251],"Numerical":[252],"results":[253],"verify":[254],"correctness":[256],"of":[257,273],"theoretical":[259],"derivations.":[260],"Additionally,":[261],"compared":[262],"most":[265],"popular":[266],"placement":[268],"strategy,":[269],"performance":[271],"superiority":[272],"proposed":[275],"SVC-based":[276],"testified.":[280]},"counts_by_year":[{"year":2025,"cited_by_count":3},{"year":2023,"cited_by_count":4},{"year":2022,"cited_by_count":8},{"year":2021,"cited_by_count":4},{"year":2020,"cited_by_count":9},{"year":2019,"cited_by_count":1}],"updated_date":"2026-04-05T17:49:38.594831","created_date":"2025-10-10T00:00:00"}