{"id":"https://openalex.org/W4403331609","doi":"https://doi.org/10.1109/jiot.2024.3478255","title":"Coded Caching in Hierarchical Cache-Aided Networks With Nonuniform User Distribution","display_name":"Coded Caching in Hierarchical Cache-Aided Networks With Nonuniform User Distribution","publication_year":2024,"publication_date":"2024-10-11","ids":{"openalex":"https://openalex.org/W4403331609","doi":"https://doi.org/10.1109/jiot.2024.3478255"},"language":"en","primary_location":{"id":"doi:10.1109/jiot.2024.3478255","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jiot.2024.3478255","pdf_url":null,"source":{"id":"https://openalex.org/S2480266640","display_name":"IEEE Internet of Things Journal","issn_l":"2327-4662","issn":["2327-4662","2372-2541"],"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 Internet of Things Journal","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/A5100360040","display_name":"Xiaoxia Wang","orcid":"https://orcid.org/0000-0002-5687-4992"},"institutions":[{"id":"https://openalex.org/I157773358","display_name":"Sun Yat-sen University","ror":"https://ror.org/0064kty71","country_code":"CN","type":"education","lineage":["https://openalex.org/I157773358"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Xiaoxia Wang","raw_affiliation_strings":["School of Electronic and Communication Engineering, Sun Yat-sen University, Shenzhen, China"],"affiliations":[{"raw_affiliation_string":"School of Electronic and Communication Engineering, Sun Yat-sen University, Shenzhen, China","institution_ids":["https://openalex.org/I157773358"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5010582544","display_name":"Chunpeng James Chen","orcid":null},"institutions":[{"id":"https://openalex.org/I157773358","display_name":"Sun Yat-sen University","ror":"https://ror.org/0064kty71","country_code":"CN","type":"education","lineage":["https://openalex.org/I157773358"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Chunpeng Chen","raw_affiliation_strings":["School of Electronic and Communication Engineering, Sun Yat-sen University, Shenzhen, China"],"affiliations":[{"raw_affiliation_string":"School of Electronic and Communication Engineering, Sun Yat-sen University, Shenzhen, China","institution_ids":["https://openalex.org/I157773358"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100768454","display_name":"Kai Huang","orcid":"https://orcid.org/0009-0007-5772-7912"},"institutions":[{"id":"https://openalex.org/I157773358","display_name":"Sun Yat-sen University","ror":"https://ror.org/0064kty71","country_code":"CN","type":"education","lineage":["https://openalex.org/I157773358"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Kai Huang","raw_affiliation_strings":["School of Electronic and Communication Engineering, Sun Yat-sen University, Shenzhen, China"],"affiliations":[{"raw_affiliation_string":"School of Electronic and Communication Engineering, Sun Yat-sen University, Shenzhen, China","institution_ids":["https://openalex.org/I157773358"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5004595691","display_name":"Jinbei Zhang","orcid":"https://orcid.org/0000-0003-2348-1970"},"institutions":[{"id":"https://openalex.org/I157773358","display_name":"Sun Yat-sen University","ror":"https://ror.org/0064kty71","country_code":"CN","type":"education","lineage":["https://openalex.org/I157773358"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jinbei Zhang","raw_affiliation_strings":["School of Electronic and Communication Engineering, Sun Yat-sen University, Shenzhen, China"],"affiliations":[{"raw_affiliation_string":"School of Electronic and Communication Engineering, Sun Yat-sen University, Shenzhen, China","institution_ids":["https://openalex.org/I157773358"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5088801513","display_name":"Kechao Cai","orcid":"https://orcid.org/0000-0003-4354-0843"},"institutions":[{"id":"https://openalex.org/I157773358","display_name":"Sun Yat-sen University","ror":"https://ror.org/0064kty71","country_code":"CN","type":"education","lineage":["https://openalex.org/I157773358"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Kechao Cai","raw_affiliation_strings":["School of Electronic and Communication Engineering, Sun Yat-sen University, Shenzhen, China"],"affiliations":[{"raw_affiliation_string":"School of Electronic and Communication Engineering, Sun Yat-sen University, Shenzhen, China","institution_ids":["https://openalex.org/I157773358"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5100360040"],"corresponding_institution_ids":["https://openalex.org/I157773358"],"apc_list":null,"apc_paid":null,"fwci":0.349,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.62017157,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":91,"max":95},"biblio":{"volume":"12","issue":"3","first_page":"3219","last_page":"3233"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11478","display_name":"Caching and Content Delivery","score":0.9994999766349792,"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":0.9994999766349792,"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":0.9972000122070312,"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":0.9750000238418579,"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":0.8597081899642944},{"id":"https://openalex.org/keywords/cache","display_name":"Cache","score":0.6835870146751404},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.5014779567718506},{"id":"https://openalex.org/keywords/smart-cache","display_name":"Smart Cache","score":0.47418126463890076},{"id":"https://openalex.org/keywords/distributed-computing","display_name":"Distributed computing","score":0.36170005798339844},{"id":"https://openalex.org/keywords/cache-algorithms","display_name":"Cache algorithms","score":0.33657658100128174},{"id":"https://openalex.org/keywords/cpu-cache","display_name":"CPU cache","score":0.3138338327407837}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8597081899642944},{"id":"https://openalex.org/C115537543","wikidata":"https://www.wikidata.org/wiki/Q165596","display_name":"Cache","level":2,"score":0.6835870146751404},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.5014779567718506},{"id":"https://openalex.org/C167713795","wikidata":"https://www.wikidata.org/wiki/Q352090","display_name":"Smart Cache","level":5,"score":0.47418126463890076},{"id":"https://openalex.org/C120314980","wikidata":"https://www.wikidata.org/wiki/Q180634","display_name":"Distributed computing","level":1,"score":0.36170005798339844},{"id":"https://openalex.org/C38556500","wikidata":"https://www.wikidata.org/wiki/Q13404475","display_name":"Cache algorithms","level":4,"score":0.33657658100128174},{"id":"https://openalex.org/C189783530","wikidata":"https://www.wikidata.org/wiki/Q352090","display_name":"CPU cache","level":3,"score":0.3138338327407837}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/jiot.2024.3478255","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jiot.2024.3478255","pdf_url":null,"source":{"id":"https://openalex.org/S2480266640","display_name":"IEEE Internet of Things Journal","issn_l":"2327-4662","issn":["2327-4662","2372-2541"],"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 Internet of Things Journal","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":43,"referenced_works":["https://openalex.org/W1606035500","https://openalex.org/W1669202830","https://openalex.org/W1966660858","https://openalex.org/W1990395546","https://openalex.org/W2051773775","https://openalex.org/W2083766832","https://openalex.org/W2099111195","https://openalex.org/W2106248279","https://openalex.org/W2116334496","https://openalex.org/W2152593621","https://openalex.org/W2613761669","https://openalex.org/W2765687053","https://openalex.org/W2766845249","https://openalex.org/W2891666821","https://openalex.org/W2895650681","https://openalex.org/W2962732150","https://openalex.org/W2962887591","https://openalex.org/W2963102996","https://openalex.org/W2963279101","https://openalex.org/W2963602389","https://openalex.org/W2963846189","https://openalex.org/W2963907541","https://openalex.org/W2971499952","https://openalex.org/W2975509111","https://openalex.org/W2975657670","https://openalex.org/W2982443087","https://openalex.org/W2997366976","https://openalex.org/W3004195166","https://openalex.org/W3036956545","https://openalex.org/W3129212555","https://openalex.org/W3159673354","https://openalex.org/W3173712969","https://openalex.org/W3198517625","https://openalex.org/W4285270382","https://openalex.org/W4289655419","https://openalex.org/W4323897035","https://openalex.org/W4376464656","https://openalex.org/W4376480588","https://openalex.org/W4384159601","https://openalex.org/W4386322186","https://openalex.org/W4388676698","https://openalex.org/W4390956190","https://openalex.org/W6636912947"],"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/W3085471909","https://openalex.org/W2041820064","https://openalex.org/W2109715593","https://openalex.org/W2012518269","https://openalex.org/W4234542536"],"abstract_inverted_index":{"Coded":[0],"caching":[1,50,127,233],"has":[2],"emerged":[3],"as":[4],"a":[5,25,32,58,91,101,123,160,195],"promising":[6],"technique":[7,133],"to":[8,110,134,156,188,215],"alleviate":[9],"traffic":[10],"congestion":[11],"by":[12],"strategically":[13],"creating":[14],"coded":[15,49,126],"multicasting":[16],"opportunities,":[17],"even":[18],"for":[19,51],"caches":[20],"with":[21,54,96,236],"different":[22],"demands.":[23],"For":[24],"two-layer":[26,92],"cache-aided":[27,93],"hierarchical":[28,94,213],"network":[29,95],"consisting":[30],"of":[31,48,57,69,75,150,220,230,239],"central":[33,102],"server,":[34],"multiple":[35,38,111],"helpers,":[36],"and":[37,113,129,147,165],"users,":[39],"prior":[40,171],"works":[41,172],"have":[42],"characterized":[43],"the":[44,55,73,131,142,145,151,182,200,209,217,221,228,231,237,240],"fundamental":[45],"performance":[46],"limits":[47],"this":[52,87,207],"system":[53],"constraint":[56],"uniform":[59,174],"user":[60,76,98,115,175],"distribution":[61,77],"(i.e.,":[62,163,167],"each":[63,114,186],"helper":[64,187],"serves":[65],"an":[66,107],"equal":[67],"number":[68],"users).":[70],"However,":[71],"when":[72],"heterogeneity":[74],"is":[78,104,158,192,208],"taken":[79],"into":[80],"account,":[81],"there":[82],"remain":[83],"open":[84],"questions.":[85],"In":[86],"article,":[88],"we":[89,178],"consider":[90],"arbitrary":[97],"distributions,":[99],"where":[100],"server":[103,155],"connected":[105],"via":[106],"error-free":[108],"link":[109],"helpers":[112,157],"can":[116],"randomly":[117],"access":[118],"one":[119],"helper.":[120],"We":[121],"introduce":[122],"new":[124],"decentralized":[125],"scheme":[128,234],"employ":[130],"cut-set":[132],"characterize":[135],"lower":[136,148,202],"bounds.":[137],"Our":[138],"results":[139,226],"show":[140,180],"that":[141,181],"gap":[143,219],"between":[144],"upper":[146],"bound":[149],"achievable":[152],"rate":[153,184],"from":[154,185,199],"within":[159],"constant":[161,196],"multiplicative":[162],"[1/32])":[164],"additive":[166,218],"2)":[168],"factor,":[169],"outperforming":[170],"under":[173],"distribution.":[176],"Moreover,":[177],"also":[179],"transmission":[183],"its":[189],"attached":[190],"users":[191],"at":[193],"most":[194],"factor":[197],"away":[198],"corresponding":[201],"bound.":[203],"To":[204],"our":[205],"knowledge,":[206],"first":[210],"work":[211],"in":[212],"networks":[214],"eliminate":[216],"second":[222],"layer.":[223],"Finally,":[224],"simulation":[225],"demonstrate":[227],"superiority":[229],"proposed":[232],"compared":[235],"state":[238],"art.":[241]},"counts_by_year":[{"year":2025,"cited_by_count":1}],"updated_date":"2026-03-27T05:58:40.876381","created_date":"2025-10-10T00:00:00"}
