{"id":"https://openalex.org/W2947618021","doi":"https://doi.org/10.3390/s19112449","title":"Multi-Location-Aware Joint Optimization of Content Caching and Delivery for Backhaul-Constrained UDN","display_name":"Multi-Location-Aware Joint Optimization of Content Caching and Delivery for Backhaul-Constrained UDN","publication_year":2019,"publication_date":"2019-05-29","ids":{"openalex":"https://openalex.org/W2947618021","doi":"https://doi.org/10.3390/s19112449","mag":"2947618021","pmid":"https://pubmed.ncbi.nlm.nih.gov/31146353"},"language":"en","primary_location":{"id":"doi:10.3390/s19112449","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s19112449","pdf_url":"https://www.mdpi.com/1424-8220/19/11/2449/pdf?version=1559114644","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj","pubmed"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/1424-8220/19/11/2449/pdf?version=1559114644","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5071392558","display_name":"Wenpeng Jing","orcid":"https://orcid.org/0000-0002-6553-0358"},"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":"Wenpeng Jing","raw_affiliation_strings":["Beijing Key Laboratory of Network System Architecture and Convergence, Beijing Laboratory of Advanced Information Networks, Beijing University of Posts and Telecommunications, Beijing 100876, China"],"affiliations":[{"raw_affiliation_string":"Beijing Key Laboratory of Network System Architecture and Convergence, Beijing Laboratory of Advanced Information Networks, Beijing University of Posts and Telecommunications, Beijing 100876, China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5000851572","display_name":"Xiangming Wen","orcid":"https://orcid.org/0000-0003-2793-6696"},"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":"Xiangming Wen","raw_affiliation_strings":["Beijing Key Laboratory of Network System Architecture and Convergence, Beijing Laboratory of Advanced Information Networks, Beijing University of Posts and Telecommunications, Beijing 100876, China"],"affiliations":[{"raw_affiliation_string":"Beijing Key Laboratory of Network System Architecture and Convergence, Beijing Laboratory of Advanced Information Networks, Beijing University of Posts and Telecommunications, Beijing 100876, China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5019111566","display_name":"Zhaoming Lu","orcid":"https://orcid.org/0000-0002-0182-1770"},"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":"Zhaoming Lu","raw_affiliation_strings":["Beijing Key Laboratory of Network System Architecture and Convergence, Beijing Laboratory of Advanced Information Networks, Beijing University of Posts and Telecommunications, Beijing 100876, China"],"affiliations":[{"raw_affiliation_string":"Beijing Key Laboratory of Network System Architecture and Convergence, Beijing Laboratory of Advanced Information Networks, Beijing University of Posts and Telecommunications, Beijing 100876, China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100458455","display_name":"Haijun Zhang","orcid":"https://orcid.org/0000-0002-0236-6482"},"institutions":[{"id":"https://openalex.org/I92403157","display_name":"University of Science and Technology Beijing","ror":"https://ror.org/02egmk993","country_code":"CN","type":"education","lineage":["https://openalex.org/I92403157"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Haijun Zhang","raw_affiliation_strings":["Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Engineering and Technology Research Center for Convergence Networks and Ubiquitous Services, School of Computer and Communication Engineering, University of Science and Technology Beijing(USTB), Beijing 100083, China"],"affiliations":[{"raw_affiliation_string":"Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Engineering and Technology Research Center for Convergence Networks and Ubiquitous Services, School of Computer and Communication Engineering, University of Science and Technology Beijing(USTB), Beijing 100083, China","institution_ids":["https://openalex.org/I92403157"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5071392558"],"corresponding_institution_ids":["https://openalex.org/I139759216"],"apc_list":{"value":2400,"currency":"CHF","value_usd":2598},"apc_paid":{"value":2400,"currency":"CHF","value_usd":2598},"fwci":0.3714,"has_fulltext":true,"cited_by_count":2,"citation_normalized_percentile":{"value":0.63576891,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"19","issue":"11","first_page":"2449","last_page":"2449"},"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":0.9958000183105469,"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/T10148","display_name":"Advanced MIMO Systems Optimization","score":0.9837999939918518,"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/backhaul","display_name":"Backhaul (telecommunications)","score":0.9304417371749878},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.8002078533172607},{"id":"https://openalex.org/keywords/cache","display_name":"Cache","score":0.7372620105743408},{"id":"https://openalex.org/keywords/base-station","display_name":"Base station","score":0.6554785966873169},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.6024335026741028},{"id":"https://openalex.org/keywords/optimization-problem","display_name":"Optimization problem","score":0.5208466649055481},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.5191768407821655},{"id":"https://openalex.org/keywords/small-cell","display_name":"Small cell","score":0.44827720522880554},{"id":"https://openalex.org/keywords/wireless-network","display_name":"Wireless network","score":0.43342095613479614},{"id":"https://openalex.org/keywords/distributed-computing","display_name":"Distributed computing","score":0.3908279538154602},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.3324791193008423},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.14201924204826355}],"concepts":[{"id":"https://openalex.org/C103760667","wikidata":"https://www.wikidata.org/wiki/Q798444","display_name":"Backhaul (telecommunications)","level":3,"score":0.9304417371749878},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8002078533172607},{"id":"https://openalex.org/C115537543","wikidata":"https://www.wikidata.org/wiki/Q165596","display_name":"Cache","level":2,"score":0.7372620105743408},{"id":"https://openalex.org/C68649174","wikidata":"https://www.wikidata.org/wiki/Q1379116","display_name":"Base station","level":2,"score":0.6554785966873169},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.6024335026741028},{"id":"https://openalex.org/C137836250","wikidata":"https://www.wikidata.org/wiki/Q984063","display_name":"Optimization problem","level":2,"score":0.5208466649055481},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.5191768407821655},{"id":"https://openalex.org/C179655311","wikidata":"https://www.wikidata.org/wiki/Q7543020","display_name":"Small cell","level":3,"score":0.44827720522880554},{"id":"https://openalex.org/C108037233","wikidata":"https://www.wikidata.org/wiki/Q11375","display_name":"Wireless network","level":3,"score":0.43342095613479614},{"id":"https://openalex.org/C120314980","wikidata":"https://www.wikidata.org/wiki/Q180634","display_name":"Distributed computing","level":1,"score":0.3908279538154602},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.3324791193008423},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.14201924204826355},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.0},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.0}],"mesh":[],"locations_count":5,"locations":[{"id":"doi:10.3390/s19112449","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s19112449","pdf_url":"https://www.mdpi.com/1424-8220/19/11/2449/pdf?version=1559114644","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},{"id":"pmid:31146353","is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/31146353","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors (Basel, Switzerland)","raw_type":null},{"id":"pmh:oai:doaj.org/article:60ea39769df74bed9d1b7cb0a210c720","is_oa":true,"landing_page_url":"https://doaj.org/article/60ea39769df74bed9d1b7cb0a210c720","pdf_url":null,"source":{"id":"https://openalex.org/S112646816","display_name":"SHILAP Revista de lepidopterolog\u00eda","issn_l":"0300-5267","issn":["0300-5267","2340-4078"],"is_oa":true,"is_in_doaj":true,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Sensors, Vol 19, Iss 11, p 2449 (2019)","raw_type":"article"},{"id":"pmh:oai:europepmc.org:5594757","is_oa":true,"landing_page_url":"https://www.ncbi.nlm.nih.gov/pmc/articles/6603776","pdf_url":null,"source":{"id":"https://openalex.org/S4306400806","display_name":"Europe PMC (PubMed Central)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1303153112","host_organization_name":"European Bioinformatics Institute","host_organization_lineage":["https://openalex.org/I1303153112"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Text"},{"id":"pmh:oai:mdpi.com:/1424-8220/19/11/2449/","is_oa":true,"landing_page_url":"http://dx.doi.org/10.3390/s19112449","pdf_url":null,"source":{"id":"https://openalex.org/S4306400947","display_name":"MDPI (MDPI AG)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210097602","host_organization_name":"Multidisciplinary Digital Publishing Institute (Switzerland)","host_organization_lineage":["https://openalex.org/I4210097602"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Sensors","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/s19112449","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s19112449","pdf_url":"https://www.mdpi.com/1424-8220/19/11/2449/pdf?version=1559114644","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G1231421488","display_name":null,"funder_award_id":"under","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G2191880185","display_name":null,"funder_award_id":"2018ZX030110004","funder_id":"https://openalex.org/F4320329860","funder_display_name":"National Science and Technology Major Project"},{"id":"https://openalex.org/G3317480652","display_name":null,"funder_award_id":"Science","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G37568934","display_name":null,"funder_award_id":"Grant","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G5939423041","display_name":null,"funder_award_id":"Technology","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G5994120800","display_name":null,"funder_award_id":"Natural","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G8217469405","display_name":null,"funder_award_id":"61801036","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G8955107213","display_name":null,"funder_award_id":"Major","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"},{"id":"https://openalex.org/F4320329860","display_name":"National Science and Technology Major Project","ror":null}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2947618021.pdf","grobid_xml":"https://content.openalex.org/works/W2947618021.grobid-xml"},"referenced_works_count":34,"referenced_works":["https://openalex.org/W1972738071","https://openalex.org/W1974747079","https://openalex.org/W1982300822","https://openalex.org/W2010630450","https://openalex.org/W2039090559","https://openalex.org/W2076238075","https://openalex.org/W2076933439","https://openalex.org/W2084099189","https://openalex.org/W2093375622","https://openalex.org/W2256188983","https://openalex.org/W2296319761","https://openalex.org/W2398409936","https://openalex.org/W2405190381","https://openalex.org/W2415391790","https://openalex.org/W2425152312","https://openalex.org/W2559537540","https://openalex.org/W2592916654","https://openalex.org/W2605344455","https://openalex.org/W2757150185","https://openalex.org/W2765404514","https://openalex.org/W2791595663","https://openalex.org/W2795601417","https://openalex.org/W2803724614","https://openalex.org/W2897039430","https://openalex.org/W2962718958","https://openalex.org/W2963040956","https://openalex.org/W2963568889","https://openalex.org/W2963969622","https://openalex.org/W2964011116","https://openalex.org/W3102351675","https://openalex.org/W3105101694","https://openalex.org/W3122800475","https://openalex.org/W4250589301","https://openalex.org/W6749922303"],"related_works":["https://openalex.org/W4297310313","https://openalex.org/W2963149344","https://openalex.org/W2901118320","https://openalex.org/W2097644939","https://openalex.org/W2012551222","https://openalex.org/W4200445394","https://openalex.org/W1984184009","https://openalex.org/W4303414366","https://openalex.org/W2041847789","https://openalex.org/W1690954787"],"abstract_inverted_index":{"Mobile":[0],"edge":[1],"caching":[2,59],"is":[3,105,114,122,135,163],"regarded":[4],"as":[5],"a":[6,110,155,211,216],"promising":[7],"way":[8],"to":[9,26,140,179],"reduce":[10],"the":[11,15,20,38,57,66,70,78,88,93,117,127,130,166,174,180,187,197,207,235,245,248,252,255,264],"backhaul":[12,175],"load":[13],"of":[14,22,40,51,69,119,168,183,244,251,257],"base":[16],"stations":[17],"(BSs).":[18],"However,":[19],"capacity":[21],"BSs'":[23],"cache":[24],"tends":[25],"be":[27],"small,":[28],"while":[29],"mobile":[30],"users'":[31,170],"content":[32,58,61,71,74,94,97,111,142,212],"preferences":[33],"are":[34,45,99,193,224,230,261],"diverse.":[35],"Furthermore,":[36],"both":[37],"locations":[39,150],"users":[41,138],"and":[42,60,73,96,158,190,215,220,254,260],"user-BS":[43,120,156],"association":[44,121,157,219],"uncertain":[46],"in":[47,77,90,242],"wireless":[48,159],"networks.":[49],"All":[50],"these":[52,184],"pose":[53],"great":[54],"challenges":[55],"on":[56,206],"delivery.":[62],"This":[63],"paper":[64],"studies":[65],"joint":[67],"optimization":[68,209],"placement":[72,95,112,213],"delivery":[75,98],"schemes":[76],"cache-enabled":[79,265],"ultra-dense":[80],"small-cell":[81],"network":[82,246],"(UDN)":[83],"with":[84,165,267],"constrained-backhaul":[85,268],"link.":[86,269],"Considering":[87],"differences":[89],"decision":[91],"time-scales,":[92],"investigated":[100],"separately,":[101],"but":[102,148],"their":[103],"interplay":[104],"taken":[106],"into":[107,200],"consideration.":[108],"Firstly,":[109],"problem":[113,162,188],"formulated,":[115,164],"where":[116],"uncertainty":[118],"considered.":[123],"Specifically,":[124],"different":[125],"from":[126,144],"existing":[128],"works,":[129],"specific":[131],"multi-location":[132],"request":[133],"pattern":[134],"considered":[136],"that":[137,234],"tend":[139],"send":[141],"requests":[143],"more":[145,201],"than":[146],"one":[147,152],"limited":[149],"during":[151],"day.":[153],"Secondly,":[154],"resources":[160,221],"allocation":[161,222],"objective":[167],"maximizing":[169],"data":[171],"rates":[172],"under":[173],"bandwidth":[176],"constraint.":[177],"Due":[178],"non-convex":[181],"nature":[182],"two":[185],"problems,":[186],"transformation":[189],"variables":[191],"relaxation":[192],"adopted,":[194],"which":[195,232],"convert":[196],"original":[198],"problems":[199],"tractable":[202],"forms.":[203],"Then,":[204],"based":[205],"convex":[208],"methods,":[210],"algorithm,":[214],"cache-aware":[217],"user":[218],"algorithm":[223],"proposed,":[225],"respectively.":[226],"Finally,":[227],"simulation":[228],"results":[229],"given,":[231],"validate":[233],"proposed":[236],"algorithms":[237],"have":[238],"obvious":[239],"performance":[240],"advantages":[241],"terms":[243],"utility,":[247],"hit":[249],"ratio":[250],"cache,":[253],"quality":[256],"service":[258],"guarantee,":[259],"suitable":[262],"for":[263],"UDN":[266]},"counts_by_year":[{"year":2022,"cited_by_count":1},{"year":2020,"cited_by_count":1}],"updated_date":"2026-04-16T08:26:57.006410","created_date":"2025-10-10T00:00:00"}
