{"id":"https://openalex.org/W4315629898","doi":"https://doi.org/10.1109/globecom48099.2022.10001098","title":"Towards Coverage-Aware Cooperative Video Caching in LEO Satellite Networks","display_name":"Towards Coverage-Aware Cooperative Video Caching in LEO Satellite Networks","publication_year":2022,"publication_date":"2022-12-04","ids":{"openalex":"https://openalex.org/W4315629898","doi":"https://doi.org/10.1109/globecom48099.2022.10001098"},"language":"en","primary_location":{"id":"doi:10.1109/globecom48099.2022.10001098","is_oa":false,"landing_page_url":"https://doi.org/10.1109/globecom48099.2022.10001098","pdf_url":null,"source":{"id":"https://openalex.org/S4363607705","display_name":"GLOBECOM 2022 - 2022 IEEE Global Communications Conference","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"GLOBECOM 2022 - 2022 IEEE Global Communications Conference","raw_type":"proceedings-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/A5006769633","display_name":"Ruili Zhao","orcid":"https://orcid.org/0000-0002-7704-5931"},"institutions":[{"id":"https://openalex.org/I10535382","display_name":"Chongqing University of Posts and Telecommunications","ror":"https://ror.org/03dgaqz26","country_code":"CN","type":"education","lineage":["https://openalex.org/I10535382"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Ruili Zhao","raw_affiliation_strings":["School of Communication and Information Engineering Chongqing University of Posts and Telecommunications,Chongqing,China","School of Communication and Information Engineering Chongqing University of Posts and Telecommunications, Chongqing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Communication and Information Engineering Chongqing University of Posts and Telecommunications,Chongqing,China","institution_ids":["https://openalex.org/I10535382"]},{"raw_affiliation_string":"School of Communication and Information Engineering Chongqing University of Posts and Telecommunications, Chongqing, China","institution_ids":["https://openalex.org/I10535382"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5016656803","display_name":"Yongyi Ran","orcid":"https://orcid.org/0000-0002-3200-1409"},"institutions":[{"id":"https://openalex.org/I10535382","display_name":"Chongqing University of Posts and Telecommunications","ror":"https://ror.org/03dgaqz26","country_code":"CN","type":"education","lineage":["https://openalex.org/I10535382"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yongyi Ran","raw_affiliation_strings":["School of Communication and Information Engineering Chongqing University of Posts and Telecommunications,Chongqing,China","School of Communication and Information Engineering Chongqing University of Posts and Telecommunications, Chongqing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Communication and Information Engineering Chongqing University of Posts and Telecommunications,Chongqing,China","institution_ids":["https://openalex.org/I10535382"]},{"raw_affiliation_string":"School of Communication and Information Engineering Chongqing University of Posts and Telecommunications, Chongqing, China","institution_ids":["https://openalex.org/I10535382"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5052677758","display_name":"Jiangtao Luo","orcid":"https://orcid.org/0000-0002-9160-3047"},"institutions":[{"id":"https://openalex.org/I10535382","display_name":"Chongqing University of Posts and Telecommunications","ror":"https://ror.org/03dgaqz26","country_code":"CN","type":"education","lineage":["https://openalex.org/I10535382"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jiangtao Luo","raw_affiliation_strings":["School of Communication and Information Engineering Chongqing University of Posts and Telecommunications,Chongqing,China","School of Communication and Information Engineering Chongqing University of Posts and Telecommunications, Chongqing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Communication and Information Engineering Chongqing University of Posts and Telecommunications,Chongqing,China","institution_ids":["https://openalex.org/I10535382"]},{"raw_affiliation_string":"School of Communication and Information Engineering Chongqing University of Posts and Telecommunications, Chongqing, China","institution_ids":["https://openalex.org/I10535382"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5045720734","display_name":"Shuangwu Chen","orcid":"https://orcid.org/0000-0003-2817-9738"},"institutions":[{"id":"https://openalex.org/I126520041","display_name":"University of Science and Technology of China","ror":"https://ror.org/04c4dkn09","country_code":"CN","type":"education","lineage":["https://openalex.org/I126520041","https://openalex.org/I19820366"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Shuangwu Chen","raw_affiliation_strings":["University of Science and Technology of China,Hefei,China","University of Science and Technology of China, Hefei, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Science and Technology of China,Hefei,China","institution_ids":["https://openalex.org/I126520041"]},{"raw_affiliation_string":"University of Science and Technology of China, Hefei, China","institution_ids":["https://openalex.org/I126520041"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":4.4974,"has_fulltext":false,"cited_by_count":21,"citation_normalized_percentile":{"value":0.96901798,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":94,"max":99},"biblio":{"volume":null,"issue":null,"first_page":"1893","last_page":"1898"},"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/T11896","display_name":"Opportunistic and Delay-Tolerant Networks","score":0.9976999759674072,"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/T12042","display_name":"Satellite Communication Systems","score":0.9976999759674072,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace 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":0.8914300203323364},{"id":"https://openalex.org/keywords/cache","display_name":"Cache","score":0.7672972679138184},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.516416609287262},{"id":"https://openalex.org/keywords/the-internet","display_name":"The Internet","score":0.4857954978942871},{"id":"https://openalex.org/keywords/markov-decision-process","display_name":"Markov decision process","score":0.480505108833313},{"id":"https://openalex.org/keywords/service","display_name":"Service (business)","score":0.46692347526550293},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.4198911488056183},{"id":"https://openalex.org/keywords/markov-process","display_name":"Markov process","score":0.37163424491882324}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8914300203323364},{"id":"https://openalex.org/C115537543","wikidata":"https://www.wikidata.org/wiki/Q165596","display_name":"Cache","level":2,"score":0.7672972679138184},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.516416609287262},{"id":"https://openalex.org/C110875604","wikidata":"https://www.wikidata.org/wiki/Q75","display_name":"The Internet","level":2,"score":0.4857954978942871},{"id":"https://openalex.org/C106189395","wikidata":"https://www.wikidata.org/wiki/Q176789","display_name":"Markov decision process","level":3,"score":0.480505108833313},{"id":"https://openalex.org/C2780378061","wikidata":"https://www.wikidata.org/wiki/Q25351891","display_name":"Service (business)","level":2,"score":0.46692347526550293},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.4198911488056183},{"id":"https://openalex.org/C159886148","wikidata":"https://www.wikidata.org/wiki/Q176645","display_name":"Markov process","level":2,"score":0.37163424491882324},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.0},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.0},{"id":"https://openalex.org/C136264566","wikidata":"https://www.wikidata.org/wiki/Q159810","display_name":"Economy","level":1,"score":0.0},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","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":1,"locations":[{"id":"doi:10.1109/globecom48099.2022.10001098","is_oa":false,"landing_page_url":"https://doi.org/10.1109/globecom48099.2022.10001098","pdf_url":null,"source":{"id":"https://openalex.org/S4363607705","display_name":"GLOBECOM 2022 - 2022 IEEE Global Communications Conference","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"GLOBECOM 2022 - 2022 IEEE Global Communications Conference","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.5600000023841858,"id":"https://metadata.un.org/sdg/16","display_name":"Peace, Justice and strong institutions"}],"awards":[{"id":"https://openalex.org/G6535027985","display_name":null,"funder_award_id":"62171072,62172064,62003067,62101525","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G7076915781","display_name":null,"funder_award_id":"cstc2021jcyj-msxmX0586","funder_id":"https://openalex.org/F4320323172","funder_display_name":"Natural Science Foundation of Chongqing"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320323172","display_name":"Natural Science Foundation of Chongqing","ror":"https://ror.org/01h0zpd94"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":16,"referenced_works":["https://openalex.org/W2571488926","https://openalex.org/W2583274845","https://openalex.org/W2767860529","https://openalex.org/W2784294454","https://openalex.org/W2799292918","https://openalex.org/W2799986488","https://openalex.org/W2896110232","https://openalex.org/W2935268363","https://openalex.org/W2954910960","https://openalex.org/W2957568412","https://openalex.org/W2968925205","https://openalex.org/W2999271997","https://openalex.org/W3189035828","https://openalex.org/W4281554877","https://openalex.org/W4283205773","https://openalex.org/W4285154459"],"related_works":["https://openalex.org/W2152099439","https://openalex.org/W2065457896","https://openalex.org/W3173234801","https://openalex.org/W1984163603","https://openalex.org/W2167984027","https://openalex.org/W3021302227","https://openalex.org/W2315999538","https://openalex.org/W187740018","https://openalex.org/W2162286586","https://openalex.org/W4255368532"],"abstract_inverted_index":{"Video":[0],"services":[1],"such":[2],"as":[3,113],"short":[4],"video":[5,20,31,45,69,83,92,112,127],"sharing":[6],"have":[7],"exploded":[8],"due":[9],"to":[10,42,48,121],"the":[11,89,94,98,107,123,139,164,174],"rapid":[12],"development":[13],"of":[14,63,91,111,126],"Internet":[15,38],"social":[16],"media":[17],"platforms.":[18],"Caching":[19],"segments":[21],"on":[22],"satellites":[23],"effectively":[24],"shortens":[25],"service":[26,124,176],"delay":[27,125,177],"and":[28,46,71,97,156,173],"speeds":[29],"up":[30],"sharing,":[32],"especially":[33],"for":[34],"users":[35],"without":[36],"terrestrial":[37],"access.":[39],"However,":[40],"where":[41],"place":[43],"what":[44],"how":[47],"replace":[49],"it":[50],"in":[51,93],"time":[52],"is":[53],"by":[54,129,143,171,181],"no":[55],"means":[56],"an":[57],"easy":[58],"task,":[59],"requiring":[60],"careful":[61],"consideration":[62],"many":[64],"factors,":[65],"e.g.,":[66],"satellite":[67],"coverage,":[68],"popularity,":[70],"limited":[72],"caching":[73,84],"resource.":[74],"In":[75,103],"this":[76],"paper,":[77],"we":[78,105],"propose":[79],"a":[80,114,153],"coverage-aware":[81],"cooperative":[82],"algorithm":[85,151],"(CACVC)":[86],"that":[87,163],"considers":[88],"prevalence":[90],"coverage":[95],"area":[96],"collaboration":[99],"between":[100],"adjacent":[101],"satellites.":[102],"CACVC,":[104],"model":[106],"cache":[108,141,165],"placement":[109],"problem":[110],"Partially":[115],"Observable":[116],"Markov":[117],"Decision":[118],"Process":[119],"(POMDP)":[120],"optimize":[122],"provided":[128],"access":[130],"satellites,":[131,133],"neighboring":[132],"or":[134],"ground":[135],"stations.":[136],"We":[137],"derive":[138],"optimal":[140],"strategy":[142],"utilizing":[144],"Multi-Agent":[145],"Deep":[146],"Deterministic":[147],"Policy":[148],"Gradient":[149],"(MADDPG)":[150],"with":[152],"centralized":[154],"training":[155],"distributed":[157],"execution":[158],"paradigm.":[159],"Simulation":[160],"results":[161],"show":[162],"hit":[166],"ratio":[167],"can":[168,178],"be":[169,179],"improved":[170],"4%~18%,":[172],"average":[175],"reduced":[180],"1%~14%.":[182]},"counts_by_year":[{"year":2025,"cited_by_count":9},{"year":2024,"cited_by_count":10},{"year":2023,"cited_by_count":2}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}