{"id":"https://openalex.org/W4410358630","doi":"https://doi.org/10.1109/taes.2025.3570255","title":"LEO Satellite Handover Using Advantage Actor-Critic Algorithm in Giant Constellation Network","display_name":"LEO Satellite Handover Using Advantage Actor-Critic Algorithm in Giant Constellation Network","publication_year":2025,"publication_date":"2025-05-14","ids":{"openalex":"https://openalex.org/W4410358630","doi":"https://doi.org/10.1109/taes.2025.3570255"},"language":"en","primary_location":{"id":"doi:10.1109/taes.2025.3570255","is_oa":false,"landing_page_url":"https://doi.org/10.1109/taes.2025.3570255","pdf_url":null,"source":{"id":"https://openalex.org/S193624734","display_name":"IEEE Transactions on Aerospace and Electronic Systems","issn_l":"0018-9251","issn":["0018-9251","1557-9603","2371-9877"],"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 Aerospace and Electronic Systems","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/A5108224011","display_name":"Chao Tong","orcid":null},"institutions":[{"id":"https://openalex.org/I149594827","display_name":"Xidian University","ror":"https://ror.org/05s92vm98","country_code":"CN","type":"education","lineage":["https://openalex.org/I149594827"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Chenqiang Tong","raw_affiliation_strings":["State Key Laboratory of Integrated Service Networks, Xidian University, Xi'an, China","Xidian University, Xi&#x0027;an, China"],"raw_orcid":"https://orcid.org/0009-0009-4443-8921","affiliations":[{"raw_affiliation_string":"State Key Laboratory of Integrated Service Networks, Xidian University, Xi'an, China","institution_ids":["https://openalex.org/I149594827"]},{"raw_affiliation_string":"Xidian University, Xi&#x0027;an, China","institution_ids":["https://openalex.org/I149594827"]}]},{"author_position":"middle","author":{"id":null,"display_name":"Chen Chen","orcid":"https://orcid.org/0000-0002-4971-5029"},"institutions":[{"id":"https://openalex.org/I149594827","display_name":"Xidian University","ror":"https://ror.org/05s92vm98","country_code":"CN","type":"education","lineage":["https://openalex.org/I149594827"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Chen Chen","raw_affiliation_strings":["State Key Laboratory of Integrated Service Networks, Xidian University, Xi'an, China","Xidian University, Xi&#x0027;an, China"],"raw_orcid":"https://orcid.org/0000-0002-4971-5029","affiliations":[{"raw_affiliation_string":"State Key Laboratory of Integrated Service Networks, Xidian University, Xi'an, China","institution_ids":["https://openalex.org/I149594827"]},{"raw_affiliation_string":"Xidian University, Xi&#x0027;an, China","institution_ids":["https://openalex.org/I149594827"]}]},{"author_position":"middle","author":{"id":null,"display_name":"Li Cong","orcid":"https://orcid.org/0009-0005-8348-7663"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Li Cong","raw_affiliation_strings":["State Grid Jilin Province Electric Power Company Limited Information Communication Company, Changchun, China"],"raw_orcid":"https://orcid.org/0009-0005-8348-7663","affiliations":[{"raw_affiliation_string":"State Grid Jilin Province Electric Power Company Limited Information Communication Company, Changchun, China","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101932168","display_name":"Tong Mu","orcid":"https://orcid.org/0000-0002-4152-7752"},"institutions":[{"id":"https://openalex.org/I194716290","display_name":"China Academy of Space Technology","ror":"https://ror.org/025397a59","country_code":"CN","type":"government","lineage":["https://openalex.org/I194716290","https://openalex.org/I2802615301"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Tong Mu","raw_affiliation_strings":["National Key Laboratory of Science and Technology on Space Microwave, CAST, Xi'an, China","National Key Laboratory of Science and Technology on Space Microwave, CAST, Xi&#x0027;an, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Key Laboratory of Science and Technology on Space Microwave, CAST, Xi'an, China","institution_ids":["https://openalex.org/I194716290"]},{"raw_affiliation_string":"National Key Laboratory of Science and Technology on Space Microwave, CAST, Xi&#x0027;an, China","institution_ids":["https://openalex.org/I194716290"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5065373445","display_name":"Qingqi Pei","orcid":"https://orcid.org/0000-0001-7601-5434"},"institutions":[{"id":"https://openalex.org/I149594827","display_name":"Xidian University","ror":"https://ror.org/05s92vm98","country_code":"CN","type":"education","lineage":["https://openalex.org/I149594827"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Qingqi Pei","raw_affiliation_strings":["State Key Laboratory of Integrated Service Networks, Xidian University, Xi'an, China","Xidian University, Xi&#x0027;an, China"],"raw_orcid":"https://orcid.org/0000-0001-7601-5434","affiliations":[{"raw_affiliation_string":"State Key Laboratory of Integrated Service Networks, Xidian University, Xi'an, China","institution_ids":["https://openalex.org/I149594827"]},{"raw_affiliation_string":"Xidian University, Xi&#x0027;an, China","institution_ids":["https://openalex.org/I149594827"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5003203521","display_name":"Shaohua Wan","orcid":"https://orcid.org/0000-0001-7013-9081"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Shaohua Wan","raw_affiliation_strings":["Shenzhen Institute for Advanced Study, University of Electronic Science and Technology of China, Shenzhen, China"],"raw_orcid":"https://orcid.org/0000-0001-7013-9081","affiliations":[{"raw_affiliation_string":"Shenzhen Institute for Advanced Study, University of Electronic Science and Technology of China, Shenzhen, China","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":10.0877,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.97243306,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":94,"max":97},"biblio":{"volume":"61","issue":"5","first_page":"11888","last_page":"11903"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12042","display_name":"Satellite Communication Systems","score":0.9994000196456909,"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"}},"topics":[{"id":"https://openalex.org/T12042","display_name":"Satellite Communication Systems","score":0.9994000196456909,"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"}},{"id":"https://openalex.org/T12449","display_name":"Spacecraft Design and Technology","score":0.9434000253677368,"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/constellation","display_name":"Constellation","score":0.8196673393249512},{"id":"https://openalex.org/keywords/handover","display_name":"Handover","score":0.7298167943954468},{"id":"https://openalex.org/keywords/satellite-broadcasting","display_name":"Satellite broadcasting","score":0.6153948903083801},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6116048693656921},{"id":"https://openalex.org/keywords/satellite","display_name":"Satellite","score":0.5784628391265869},{"id":"https://openalex.org/keywords/satellite-constellation","display_name":"Satellite constellation","score":0.5652773976325989},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.5196112990379333},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.40360382199287415},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.225327730178833},{"id":"https://openalex.org/keywords/aerospace-engineering","display_name":"Aerospace engineering","score":0.09941643476486206},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.09552612900733948}],"concepts":[{"id":"https://openalex.org/C70352696","wikidata":"https://www.wikidata.org/wiki/Q8928","display_name":"Constellation","level":2,"score":0.8196673393249512},{"id":"https://openalex.org/C111852164","wikidata":"https://www.wikidata.org/wiki/Q1414679","display_name":"Handover","level":2,"score":0.7298167943954468},{"id":"https://openalex.org/C2986254709","wikidata":"https://www.wikidata.org/wiki/Q209588","display_name":"Satellite broadcasting","level":3,"score":0.6153948903083801},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6116048693656921},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.5784628391265869},{"id":"https://openalex.org/C2779784338","wikidata":"https://www.wikidata.org/wiki/Q967145","display_name":"Satellite constellation","level":3,"score":0.5652773976325989},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5196112990379333},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.40360382199287415},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.225327730178833},{"id":"https://openalex.org/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","level":1,"score":0.09941643476486206},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.09552612900733948},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/taes.2025.3570255","is_oa":false,"landing_page_url":"https://doi.org/10.1109/taes.2025.3570255","pdf_url":null,"source":{"id":"https://openalex.org/S193624734","display_name":"IEEE Transactions on Aerospace and Electronic Systems","issn_l":"0018-9251","issn":["0018-9251","1557-9603","2371-9877"],"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 Aerospace and Electronic Systems","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G1769398006","display_name":"\u8d85\u89c6\u8ddd\u611f\u77e5\u6761\u4ef6\u4e0b\u7f51\u8054\u81ea\u52a8\u9a7e\u9a76\u8f66\u8def\u534f\u540c\u4fe1\u606f\u878d\u5408\u673a\u5236\u4e0e\u7b97\u6cd5\u7814\u7a76","funder_award_id":"62072360","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G3494558276","display_name":null,"funder_award_id":"62172438","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G6810377529","display_name":null,"funder_award_id":"2023-JCJQ-LB-007","funder_id":"https://openalex.org/F4320328373","funder_display_name":"National Key Laboratory 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/F4320328373","display_name":"National Key Laboratory Foundation of China","ror":null}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":33,"referenced_works":["https://openalex.org/W1460008853","https://openalex.org/W2516216435","https://openalex.org/W2790348754","https://openalex.org/W2800433823","https://openalex.org/W2806342976","https://openalex.org/W2887102659","https://openalex.org/W2922988740","https://openalex.org/W2945875572","https://openalex.org/W2965933676","https://openalex.org/W3001957043","https://openalex.org/W3016149928","https://openalex.org/W3035481639","https://openalex.org/W3081933036","https://openalex.org/W3124458808","https://openalex.org/W3149828318","https://openalex.org/W3205771175","https://openalex.org/W4200368199","https://openalex.org/W4214502127","https://openalex.org/W4225392202","https://openalex.org/W4292261130","https://openalex.org/W4296212358","https://openalex.org/W4312746275","https://openalex.org/W4313588255","https://openalex.org/W4328028105","https://openalex.org/W4386360732","https://openalex.org/W4386883029","https://openalex.org/W4387870429","https://openalex.org/W4389105147","https://openalex.org/W4392016175","https://openalex.org/W4392925868","https://openalex.org/W4394896840","https://openalex.org/W4401069972","https://openalex.org/W4401692221"],"related_works":["https://openalex.org/W2385787340","https://openalex.org/W2394459062","https://openalex.org/W2392670398","https://openalex.org/W4221033466","https://openalex.org/W4224313018","https://openalex.org/W2355913771","https://openalex.org/W2560673277","https://openalex.org/W4225291832","https://openalex.org/W3209202847","https://openalex.org/W4407479922"],"abstract_inverted_index":{"Low":[0],"Earth":[1],"Orbit":[2],"(LEO)":[3],"satellite":[4,56,78],"network":[5],"is":[6,96],"a":[7,35,99,106],"crucial":[8],"component":[9],"of":[10,122,128,134,153,164,188,195],"the":[11,93,120,123,131,135,162,186,193],"Space-Air-Ground":[12],"Integrated":[13],"Network":[14],"(SAGIN)":[15],"architecture":[16],"and":[17,26,66,88,117,149,156,171,192],"Non-Terrestrial":[18],"Networks":[19],"(NTN).":[20],"It":[21],"can":[22],"provide":[23],"global,":[24],"real-time,":[25],"seamless":[27],"broadband":[28],"data":[29,63,189],"services":[30],"to":[31,58,140,169,179],"many":[32],"users,":[33],"playing":[34],"critical":[36],"role":[37],"in":[38,119,151],"emergencies":[39],"such":[40],"as":[41,98],"disaster":[42],"relief.":[43],"This":[44],"paper":[45],"proposes":[46],"an":[47],"Advantage":[48],"Actor-Critic":[49],"(A2C)":[50],"algorithm-based":[51],"handover":[52,61,75,94,137,142,196],"strategy":[53,72,138,160,183],"for":[54],"LEO":[55],"networks":[57],"address":[59],"high":[60],"frequency,":[62],"transmission":[64,190],"blockage,":[65],"optimal":[67],"access":[68],"selection":[69],"issues.":[70],"The":[71,126,158],"considers":[73],"five":[74,141],"factors:":[76],"available":[77],"bandwidth,":[79],"elevation":[80],"angle,":[81],"signal":[82,173],"reception":[83],"strength,":[84],"potential":[85],"service":[86,89],"time,":[87],"quality.":[90,205],"At":[91],"first,":[92],"problem":[95],"modelled":[97],"combinatorial":[100],"optimization":[101],"problem,":[102],"subsequently":[103],"transformed":[104],"into":[105],"Markovian":[107],"Action-Value":[108],"Function":[109],"(MAVF)":[110],"based":[111],"Multi-Agent":[112],"Markov":[113],"Decision":[114],"Process":[115],"(MAMDP),":[116],"solved":[118],"framework":[121],"A2C":[124],"algorithm.":[125],"results":[127],"simulations":[129],"illustrate":[130],"superior":[132],"performance":[133],"proposed":[136,159],"compared":[139],"strategies,":[143],"namely":[144],"RH,":[145],"MFC,":[146],"MST,":[147],"MADQL,":[148],"MIS,":[150],"terms":[152],"both":[154],"convergence":[155],"practicality.":[157],"reduces":[161],"number":[163,194],"average":[165],"handovers":[166],"by":[167],"up":[168,178],"58%":[170],"improves":[172],"stability,":[174],"with":[175],"enhancements":[176],"reaching":[177],"39%.":[180],"Additionally,":[181],"this":[182],"significantly":[184],"lowers":[185],"probability":[187],"blockage":[191],"failures":[197],"(handover":[198],"failure":[199],"rate),":[200],"effectively":[201],"ensuring":[202],"user":[203],"communication":[204]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":2}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
