{"id":"https://openalex.org/W1966660858","doi":"https://doi.org/10.1109/tit.2016.2557804","title":"Hierarchical Coded Caching","display_name":"Hierarchical Coded Caching","publication_year":2016,"publication_date":"2016-04-22","ids":{"openalex":"https://openalex.org/W1966660858","doi":"https://doi.org/10.1109/tit.2016.2557804","mag":"1966660858"},"language":"en","primary_location":{"id":"doi:10.1109/tit.2016.2557804","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tit.2016.2557804","pdf_url":null,"source":{"id":"https://openalex.org/S4502562","display_name":"IEEE Transactions on Information Theory","issn_l":"0018-9448","issn":["0018-9448","1557-9654"],"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 Information Theory","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/A5084509524","display_name":"Nikhil Karamchandani","orcid":"https://orcid.org/0000-0002-7233-0717"},"institutions":[{"id":"https://openalex.org/I162827531","display_name":"Indian Institute of Technology Bombay","ror":"https://ror.org/02qyf5152","country_code":"IN","type":"education","lineage":["https://openalex.org/I162827531"]}],"countries":["IN"],"is_corresponding":true,"raw_author_name":"Nikhil Karamchandani","raw_affiliation_strings":["IIT Bombay, Mumbai, India","IIT Bombay; Mumbai India"],"raw_orcid":"https://orcid.org/0000-0002-7233-0717","affiliations":[{"raw_affiliation_string":"IIT Bombay, Mumbai, India","institution_ids":["https://openalex.org/I162827531"]},{"raw_affiliation_string":"IIT Bombay; Mumbai India","institution_ids":["https://openalex.org/I162827531"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5069438536","display_name":"Urs Niesen","orcid":"https://orcid.org/0000-0002-2938-228X"},"institutions":[{"id":"https://openalex.org/I72090969","display_name":"Nokia (United States)","ror":"https://ror.org/038km2573","country_code":"US","type":"company","lineage":["https://openalex.org/I2738502077","https://openalex.org/I72090969"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Urs Niesen","raw_affiliation_strings":["Bell Labs, Alcatel-Lucent, Murray Nill, NJ"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Bell Labs, Alcatel-Lucent, Murray Nill, NJ","institution_ids":["https://openalex.org/I72090969"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5113662214","display_name":"Mohammad Ali Maddah-Ali","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Mohammad Ali Maddah-Ali","raw_affiliation_strings":["Bell Labs, Alcatel-Lucent, Holmdel, NJ, USA","Bell Laboratories\u2014Alcatel-Lucent, Holmdel, NJ, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Bell Labs, Alcatel-Lucent, Holmdel, NJ, USA","institution_ids":[]},{"raw_affiliation_string":"Bell Laboratories\u2014Alcatel-Lucent, Holmdel, NJ, USA","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5083980887","display_name":"Suhas Diggavi","orcid":"https://orcid.org/0000-0001-7313-9861"},"institutions":[{"id":"https://openalex.org/I161318765","display_name":"University of California, Los Angeles","ror":"https://ror.org/046rm7j60","country_code":"US","type":"education","lineage":["https://openalex.org/I161318765"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Suhas N. Diggavi","raw_affiliation_strings":["University of California at Los Angeles, Los Angeles, CA, USA","University of California at Los Angeles; Los Angeles CA USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of California at Los Angeles, Los Angeles, CA, USA","institution_ids":["https://openalex.org/I161318765"]},{"raw_affiliation_string":"University of California at Los Angeles; Los Angeles CA USA","institution_ids":["https://openalex.org/I161318765"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5084509524"],"corresponding_institution_ids":["https://openalex.org/I162827531"],"apc_list":null,"apc_paid":null,"fwci":37.2068,"has_fulltext":false,"cited_by_count":268,"citation_normalized_percentile":{"value":0.99851344,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":98,"max":100},"biblio":{"volume":"62","issue":"6","first_page":"3212","last_page":"3229"},"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/T11896","display_name":"Opportunistic and Delay-Tolerant Networks","score":0.9783999919891357,"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/T10742","display_name":"Peer-to-Peer Network Technologies","score":0.9660000205039978,"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":0.8507013320922852},{"id":"https://openalex.org/keywords/multicast","display_name":"Multicast","score":0.6840451955795288},{"id":"https://openalex.org/keywords/scheme","display_name":"Scheme (mathematics)","score":0.6816205978393555},{"id":"https://openalex.org/keywords/false-sharing","display_name":"False sharing","score":0.6496548056602478},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.5623112320899963},{"id":"https://openalex.org/keywords/distributed-computing","display_name":"Distributed computing","score":0.5018377304077148},{"id":"https://openalex.org/keywords/constant","display_name":"Constant (computer programming)","score":0.47784754633903503},{"id":"https://openalex.org/keywords/multiplicative-function","display_name":"Multiplicative function","score":0.47656846046447754},{"id":"https://openalex.org/keywords/layer","display_name":"Layer (electronics)","score":0.45808708667755127},{"id":"https://openalex.org/keywords/cache","display_name":"Cache","score":0.18361347913742065},{"id":"https://openalex.org/keywords/cpu-cache","display_name":"CPU cache","score":0.15182897448539734},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.08914947509765625},{"id":"https://openalex.org/keywords/cache-algorithms","display_name":"Cache algorithms","score":0.07911232113838196}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8507013320922852},{"id":"https://openalex.org/C32295351","wikidata":"https://www.wikidata.org/wiki/Q899288","display_name":"Multicast","level":2,"score":0.6840451955795288},{"id":"https://openalex.org/C77618280","wikidata":"https://www.wikidata.org/wiki/Q1155772","display_name":"Scheme (mathematics)","level":2,"score":0.6816205978393555},{"id":"https://openalex.org/C5165142","wikidata":"https://www.wikidata.org/wiki/Q5432732","display_name":"False sharing","level":5,"score":0.6496548056602478},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.5623112320899963},{"id":"https://openalex.org/C120314980","wikidata":"https://www.wikidata.org/wiki/Q180634","display_name":"Distributed computing","level":1,"score":0.5018377304077148},{"id":"https://openalex.org/C2777027219","wikidata":"https://www.wikidata.org/wiki/Q1284190","display_name":"Constant (computer programming)","level":2,"score":0.47784754633903503},{"id":"https://openalex.org/C42747912","wikidata":"https://www.wikidata.org/wiki/Q1048447","display_name":"Multiplicative function","level":2,"score":0.47656846046447754},{"id":"https://openalex.org/C2779227376","wikidata":"https://www.wikidata.org/wiki/Q6505497","display_name":"Layer (electronics)","level":2,"score":0.45808708667755127},{"id":"https://openalex.org/C115537543","wikidata":"https://www.wikidata.org/wiki/Q165596","display_name":"Cache","level":2,"score":0.18361347913742065},{"id":"https://openalex.org/C189783530","wikidata":"https://www.wikidata.org/wiki/Q352090","display_name":"CPU cache","level":3,"score":0.15182897448539734},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.08914947509765625},{"id":"https://openalex.org/C38556500","wikidata":"https://www.wikidata.org/wiki/Q13404475","display_name":"Cache algorithms","level":4,"score":0.07911232113838196},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.0},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/tit.2016.2557804","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tit.2016.2557804","pdf_url":null,"source":{"id":"https://openalex.org/S4502562","display_name":"IEEE Transactions on Information Theory","issn_l":"0018-9448","issn":["0018-9448","1557-9654"],"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 Information Theory","raw_type":"journal-article"},{"id":"pmh:oai:dsapce.library.iitb.ac.in:123456789/21225","is_oa":false,"landing_page_url":"http://doi.org/10.1109/TIT.2016.2557804","pdf_url":null,"source":{"id":"https://openalex.org/S4306400899","display_name":"DSpace (IIT Bombay)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I162827531","host_organization_name":"Indian Institute of Technology Bombay","host_organization_lineage":["https://openalex.org/I162827531"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.4399999976158142,"id":"https://metadata.un.org/sdg/9","display_name":"Industry, innovation and infrastructure"}],"awards":[{"id":"https://openalex.org/G8722626379","display_name":null,"funder_award_id":"1423271","funder_id":"https://openalex.org/F4320306076","funder_display_name":"National Science Foundation"}],"funders":[{"id":"https://openalex.org/F4320306076","display_name":"National Science Foundation","ror":"https://ror.org/021nxhr62"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":34,"referenced_works":["https://openalex.org/W860167945","https://openalex.org/W1527961683","https://openalex.org/W1555291764","https://openalex.org/W1586050161","https://openalex.org/W1659056652","https://openalex.org/W1669202830","https://openalex.org/W1920228676","https://openalex.org/W1934478726","https://openalex.org/W1945978582","https://openalex.org/W1970351028","https://openalex.org/W1990395546","https://openalex.org/W1993553863","https://openalex.org/W2039036996","https://openalex.org/W2064829135","https://openalex.org/W2083766832","https://openalex.org/W2096220631","https://openalex.org/W2099111195","https://openalex.org/W2106248279","https://openalex.org/W2112053513","https://openalex.org/W2127768834","https://openalex.org/W2152593621","https://openalex.org/W2158261262","https://openalex.org/W2294988150","https://openalex.org/W2579320238","https://openalex.org/W2963345310","https://openalex.org/W3099807289","https://openalex.org/W3103426447","https://openalex.org/W6623712918","https://openalex.org/W6631712812","https://openalex.org/W6635075814","https://openalex.org/W6648806661","https://openalex.org/W6659978517","https://openalex.org/W6697183161","https://openalex.org/W6785299815"],"related_works":["https://openalex.org/W2033488476","https://openalex.org/W2131092765","https://openalex.org/W2277662012","https://openalex.org/W1589992863","https://openalex.org/W4377015086","https://openalex.org/W1617457131","https://openalex.org/W2369090769","https://openalex.org/W2997509936","https://openalex.org/W3124313284","https://openalex.org/W4388481830"],"abstract_inverted_index":{"Caching":[0],"of":[1,23,35,53,69,88,162],"popular":[2],"content":[3,82],"during":[4,14],"off-peak":[5],"hours":[6],"is":[7,154],"a":[8,66,80,92,143],"strategy":[9],"to":[10,30,40,58,141,167],"reduce":[11],"network":[12,84],"loads":[13],"peak":[15],"hours.":[16],"Recent":[17],"work":[18],"has":[19],"shown":[20,57],"significant":[21],"benefits":[22],"designing":[24],"such":[25],"caching":[26,63,94],"strategies":[27],"not":[28],"only":[29],"locally":[31],"deliver":[32],"the":[33,36,111,123,133,137,158,163,168,173,180],"part":[34],"content,":[37],"but":[38],"also":[39],"provide":[41],"coded":[42,105,115],"multicasting":[43,106,116],"opportunities":[44,107,117],"even":[45],"among":[46],"users":[47],"with":[48,65,85],"different":[49],"demands.":[50],"Exploiting":[51],"both":[52,172],"these":[54,127],"gains":[55],"was":[56],"be":[59],"approximately":[60,179],"optimal":[61,138],"for":[62],"systems":[64],"single":[67],"layer":[68],"caches.":[70,89],"Motivated":[71],"by":[72],"practical":[73],"scenarios,":[74],"we":[75,130],"consider,":[76],"in":[77,160],"this":[78],"paper,":[79],"hierarchical":[81],"delivery":[83],"two":[86,98,128,164],"layers":[87,165,174],"We":[90,149],"propose":[91],"new":[93],"scheme":[95,135],"that":[96,132,152],"combines":[97],"basic":[99],"approaches.":[100],"The":[101],"first":[102],"approach":[103,113],"provides":[104,114],"within":[108,142],"each":[109,161],"layer;":[110],"second":[112],"across":[118],"multiple":[119],"layers.":[120],"By":[121],"striking":[122],"right":[124],"balance":[125],"between":[126,157],"approaches,":[129],"show":[131,151],"proposed":[134],"achieves":[136],"communication":[139],"rates":[140,159],"constant":[144],"multiplicative":[145],"and":[146],"additive":[147],"gap.":[148,170],"further":[150],"there":[153],"no":[155],"tension":[156],"up":[166],"aforementioned":[169],"Thus,":[171],"can":[175],"simultaneously":[176],"operate":[177],"at":[178],"minimum":[181],"rate.":[182]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":16},{"year":2024,"cited_by_count":22},{"year":2023,"cited_by_count":22},{"year":2022,"cited_by_count":20},{"year":2021,"cited_by_count":23},{"year":2020,"cited_by_count":31},{"year":2019,"cited_by_count":45},{"year":2018,"cited_by_count":38},{"year":2017,"cited_by_count":36},{"year":2016,"cited_by_count":7},{"year":2015,"cited_by_count":6}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}