{"id":"https://openalex.org/W3011047918","doi":"https://doi.org/10.1109/twc.2020.2979958","title":"Improving Caching Efficiency in Content-Aware C-RAN-Based Cooperative Beamforming: A Joint Design Approach","display_name":"Improving Caching Efficiency in Content-Aware C-RAN-Based Cooperative Beamforming: A Joint Design Approach","publication_year":2020,"publication_date":"2020-03-18","ids":{"openalex":"https://openalex.org/W3011047918","doi":"https://doi.org/10.1109/twc.2020.2979958","mag":"3011047918"},"language":"en","primary_location":{"id":"doi:10.1109/twc.2020.2979958","is_oa":false,"landing_page_url":"https://doi.org/10.1109/twc.2020.2979958","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":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":null,"display_name":"Ming-Min Zhao","orcid":"https://orcid.org/0000-0002-3020-2434"},"institutions":[{"id":"https://openalex.org/I76130692","display_name":"Zhejiang University","ror":"https://ror.org/00a2xv884","country_code":"CN","type":"education","lineage":["https://openalex.org/I76130692"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Ming-Min Zhao","raw_affiliation_strings":["College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, China"],"raw_orcid":"https://orcid.org/0000-0002-3020-2434","affiliations":[{"raw_affiliation_string":"College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, China","institution_ids":["https://openalex.org/I76130692"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5034376590","display_name":"Yunlong Cai","orcid":"https://orcid.org/0000-0001-9418-1700"},"institutions":[{"id":"https://openalex.org/I76130692","display_name":"Zhejiang University","ror":"https://ror.org/00a2xv884","country_code":"CN","type":"education","lineage":["https://openalex.org/I76130692"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yunlong Cai","raw_affiliation_strings":["College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, China"],"raw_orcid":"https://orcid.org/0000-0001-9418-1700","affiliations":[{"raw_affiliation_string":"College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, China","institution_ids":["https://openalex.org/I76130692"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5071265062","display_name":"Minjian Zhao","orcid":"https://orcid.org/0000-0002-3020-2434"},"institutions":[{"id":"https://openalex.org/I5023651","display_name":"McGill University","ror":"https://ror.org/01pxwe438","country_code":"CA","type":"education","lineage":["https://openalex.org/I5023651"]},{"id":"https://openalex.org/I76130692","display_name":"Zhejiang University","ror":"https://ror.org/00a2xv884","country_code":"CN","type":"education","lineage":["https://openalex.org/I76130692"]}],"countries":["CA","CN"],"is_corresponding":false,"raw_author_name":"Min-Jian Zhao","raw_affiliation_strings":["College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, China","McGill University, Montreal, Canada"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, China","institution_ids":["https://openalex.org/I76130692"]},{"raw_affiliation_string":"McGill University, Montreal, Canada","institution_ids":["https://openalex.org/I5023651"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101474760","display_name":"Beno\u0131\u0302t Champagne","orcid":"https://orcid.org/0000-0002-0022-6072"},"institutions":[{"id":"https://openalex.org/I159948400","display_name":"Jinan University","ror":"https://ror.org/02xe5ns62","country_code":"CN","type":"education","lineage":["https://openalex.org/I159948400"]},{"id":"https://openalex.org/I5023651","display_name":"McGill University","ror":"https://ror.org/01pxwe438","country_code":"CA","type":"education","lineage":["https://openalex.org/I5023651"]}],"countries":["CA","CN"],"is_corresponding":false,"raw_author_name":"Benoit Champagne","raw_affiliation_strings":["McGill University, Montreal, Canada","School of Intelligent Systems Science and Engineering, Jinan University, Zhuhai, China"],"raw_orcid":"https://orcid.org/0000-0002-0022-6072","affiliations":[{"raw_affiliation_string":"McGill University, Montreal, Canada","institution_ids":["https://openalex.org/I5023651"]},{"raw_affiliation_string":"School of Intelligent Systems Science and Engineering, Jinan University, Zhuhai, China","institution_ids":["https://openalex.org/I159948400"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5020442416","display_name":"Theodoros A. Tsiftsis","orcid":"https://orcid.org/0000-0002-4856-3932"},"institutions":[{"id":"https://openalex.org/I159948400","display_name":"Jinan University","ror":"https://ror.org/02xe5ns62","country_code":"CN","type":"education","lineage":["https://openalex.org/I159948400"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Theodoros A. Tsiftsis","raw_affiliation_strings":["School of Intelligent Systems Science and Engineering, Jinan University, Zhuhai, China"],"raw_orcid":"https://orcid.org/0000-0002-4856-3932","affiliations":[{"raw_affiliation_string":"School of Intelligent Systems Science and Engineering, Jinan University, Zhuhai, China","institution_ids":["https://openalex.org/I159948400"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.5455,"has_fulltext":false,"cited_by_count":13,"citation_normalized_percentile":{"value":0.8377126,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":"19","issue":"6","first_page":"4125","last_page":"4140"},"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":0.9986000061035156,"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":0.9926999807357788,"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":0.8567473888397217},{"id":"https://openalex.org/keywords/radio-access-network","display_name":"Radio access network","score":0.6820476055145264},{"id":"https://openalex.org/keywords/cache","display_name":"Cache","score":0.6015995144844055},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.5727507472038269},{"id":"https://openalex.org/keywords/c-ran","display_name":"C-RAN","score":0.5584918260574341},{"id":"https://openalex.org/keywords/beamforming","display_name":"Beamforming","score":0.526290237903595},{"id":"https://openalex.org/keywords/baseband","display_name":"Baseband","score":0.5079947113990784},{"id":"https://openalex.org/keywords/optimization-problem","display_name":"Optimization problem","score":0.5064624547958374},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.4660687744617462},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.3743845224380493},{"id":"https://openalex.org/keywords/distributed-computing","display_name":"Distributed computing","score":0.3441060781478882},{"id":"https://openalex.org/keywords/base-station","display_name":"Base station","score":0.3403862714767456},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.30673080682754517},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.0937037467956543}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8567473888397217},{"id":"https://openalex.org/C106365562","wikidata":"https://www.wikidata.org/wiki/Q3078360","display_name":"Radio access network","level":4,"score":0.6820476055145264},{"id":"https://openalex.org/C115537543","wikidata":"https://www.wikidata.org/wiki/Q165596","display_name":"Cache","level":2,"score":0.6015995144844055},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.5727507472038269},{"id":"https://openalex.org/C2779765720","wikidata":"https://www.wikidata.org/wiki/Q5005908","display_name":"C-RAN","level":5,"score":0.5584918260574341},{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.526290237903595},{"id":"https://openalex.org/C65165936","wikidata":"https://www.wikidata.org/wiki/Q575784","display_name":"Baseband","level":3,"score":0.5079947113990784},{"id":"https://openalex.org/C137836250","wikidata":"https://www.wikidata.org/wiki/Q984063","display_name":"Optimization problem","level":2,"score":0.5064624547958374},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.4660687744617462},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.3743845224380493},{"id":"https://openalex.org/C120314980","wikidata":"https://www.wikidata.org/wiki/Q180634","display_name":"Distributed computing","level":1,"score":0.3441060781478882},{"id":"https://openalex.org/C68649174","wikidata":"https://www.wikidata.org/wiki/Q1379116","display_name":"Base station","level":2,"score":0.3403862714767456},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.30673080682754517},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.0937037467956543},{"id":"https://openalex.org/C207029474","wikidata":"https://www.wikidata.org/wiki/Q384018","display_name":"Mobile station","level":3,"score":0.0},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/twc.2020.2979958","is_oa":false,"landing_page_url":"https://doi.org/10.1109/twc.2020.2979958","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"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G2768110700","display_name":null,"funder_award_id":"LQ20F010010","funder_id":"https://openalex.org/F4320338464","funder_display_name":"Natural Science Foundation of Zhejiang Province"},{"id":"https://openalex.org/G2937299307","display_name":"\u9762\u5411\u9ad8\u6548\u80fd\u6beb\u7c73\u6ce2\u901a\u4fe1\u7cfb\u7edf\u7684\u591a\u5c3a\u5ea6\u6df7\u5408\u6536\u53d1\u673a\u65b9\u6cd5\u7814\u7a76","funder_award_id":"61971376","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G4222582882","display_name":null,"funder_award_id":"91938202","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G442922040","display_name":"\u6beb\u7c73\u6ce2MIMO\u7cfb\u7edf\u4e2d\u9ad8\u6548\u6df7\u5408\u6536\u53d1\u673a\u4f18\u5316\u7b97\u6cd5\u7814\u7a76","funder_award_id":"LR19F010002","funder_id":"https://openalex.org/F4320338464","funder_display_name":"Natural Science Foundation of Zhejiang Province"},{"id":"https://openalex.org/G6110245451","display_name":"\u786c\u4ef6\u6027\u80fd\u53d7\u9650\u4e0b\u5ba4\u5916\u6beb\u7c73\u6ce2\u5927\u89c4\u6a21MIMO\u5173\u952e\u6280\u672f\u7814\u7a76","funder_award_id":"61831004","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G7368841389","display_name":null,"funder_award_id":"2019QNA5011","funder_id":"https://openalex.org/F4320335787","funder_display_name":"Fundamental Research Funds for the Central Universities"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320335787","display_name":"Fundamental Research Funds for the Central Universities","ror":null},{"id":"https://openalex.org/F4320338464","display_name":"Natural Science Foundation of Zhejiang Province","ror":"https://ror.org/01h0zpd94"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":57,"referenced_works":["https://openalex.org/W1611674276","https://openalex.org/W1767905185","https://openalex.org/W1928152501","https://openalex.org/W1960633731","https://openalex.org/W1967956032","https://openalex.org/W1972205959","https://openalex.org/W1972738071","https://openalex.org/W1988834815","https://openalex.org/W2004101329","https://openalex.org/W2037169571","https://openalex.org/W2038519345","https://openalex.org/W2039090559","https://openalex.org/W2042599231","https://openalex.org/W2057624533","https://openalex.org/W2073875488","https://openalex.org/W2079587612","https://openalex.org/W2081893537","https://openalex.org/W2091364465","https://openalex.org/W2110838621","https://openalex.org/W2112053513","https://openalex.org/W2122186362","https://openalex.org/W2127370595","https://openalex.org/W2129062845","https://openalex.org/W2137853299","https://openalex.org/W2160547390","https://openalex.org/W2210084516","https://openalex.org/W2213621529","https://openalex.org/W2226827734","https://openalex.org/W2364089413","https://openalex.org/W2405190381","https://openalex.org/W2490965583","https://openalex.org/W2511171290","https://openalex.org/W2547161317","https://openalex.org/W2601341989","https://openalex.org/W2617309511","https://openalex.org/W2621249430","https://openalex.org/W2622879782","https://openalex.org/W2774422416","https://openalex.org/W2877508583","https://openalex.org/W2887719614","https://openalex.org/W2893303065","https://openalex.org/W2945851184","https://openalex.org/W2958988029","https://openalex.org/W2963040956","https://openalex.org/W2963360080","https://openalex.org/W3012080241","https://openalex.org/W3101474566","https://openalex.org/W3102090507","https://openalex.org/W3103426447","https://openalex.org/W3103833233","https://openalex.org/W4240374930","https://openalex.org/W4250589301","https://openalex.org/W4285719527","https://openalex.org/W6680293426","https://openalex.org/W6747033292","https://openalex.org/W6775638715","https://openalex.org/W6785471874"],"related_works":["https://openalex.org/W2592537445","https://openalex.org/W2117039245","https://openalex.org/W2497039592","https://openalex.org/W4287262510","https://openalex.org/W2238502947","https://openalex.org/W4327983820","https://openalex.org/W2588899857","https://openalex.org/W2511268924","https://openalex.org/W2791638519","https://openalex.org/W2474288807"],"abstract_inverted_index":{"This":[0],"work":[1],"studies":[2],"the":[3,25,63,69,77,102,111,127,140,171,192,195],"joint":[4,120,167],"problem":[5],"of":[6,194],"content":[7,154],"placement,":[8],"remote":[9],"radio":[10],"head":[11],"(RRH)":[12],"clustering":[13],"and":[14,91,136,145,173],"beamformer":[15],"design,":[16],"in":[17,36,81],"a":[18,40,54,85,160,165],"cache-enabled":[19],"cloud-radio":[20],"access":[21],"network":[22],"(C-RAN).":[23],"In":[24],"considered":[26],"system,":[27],"downlink":[28],"users":[29],"are":[30,123],"cooperatively":[31],"served":[32],"by":[33],"multiple":[34],"RRHs,":[35],"turn":[37],"connected":[38],"to":[39,74,83,100,115,125],"centralized":[41],"baseband":[42],"unit":[43],"(BBU)":[44],"pool":[45],"via":[46],"fronthaul":[47,70,88],"links.":[48,71],"Each":[49],"RRH":[50],"is":[51,156],"equipped":[52],"with":[53],"local":[55],"cache":[56],"from":[57],"which":[58,132],"it":[59],"can":[60,176],"directly":[61],"acquire":[62],"requested":[64],"user":[65],"contents,":[66],"without":[67],"utilizing":[68],"We":[72],"aim":[73],"jointly":[75],"optimize":[76],"aforementioned":[78],"three":[79],"aspects,":[80],"order":[82],"strike":[84],"balance":[86],"between":[87,104],"traffic":[89],"reduction":[90],"transmission":[92],"power":[93],"minimization.":[94],"To":[95],"this":[96],"end,":[97],"we":[98,163],"propose":[99,164],"employ":[101],"ratio":[103],"these":[105],"two":[106],"important":[107],"system":[108],"utilities":[109],"as":[110,116,182,184],"objective":[112],"function,":[113],"referred":[114],"caching":[117],"efficiency.":[118],"Two":[119],"design":[121,168],"algorithms":[122,175],"presented":[124],"address":[126],"resulting":[128],"nonconvex":[129],"optimization":[130],"problem,":[131],"features":[133],"coupling":[134],"constraints":[135],"mixed-integer":[137],"variables,":[138],"namely:":[139],"penalty":[141,146],"concave-convex":[142],"procedure":[143],"(P-CCCP)":[144],"dual":[147],"decomposition":[148],"(PDD)":[149],"based":[150],"algorithms.":[151,197],"Furthermore,":[152],"since":[153],"placement":[155],"usually":[157],"updated":[158],"over":[159],"larger":[161],"timescale,":[162],"two-timescale":[166],"algorithm,":[169],"where":[170],"P-CCCP":[172],"PDD-based":[174],"be":[177],"employed":[178],"for":[179,185],"efficient":[180],"initialization":[181],"well":[183],"establishing":[186],"performance":[187],"limits.":[188],"Simulation":[189],"results":[190],"validate":[191],"efficiency":[193],"proposed":[196]},"counts_by_year":[{"year":2025,"cited_by_count":3},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":5},{"year":2020,"cited_by_count":2}],"updated_date":"2026-07-13T07:31:44.756512","created_date":"2025-10-10T00:00:00"}