{"id":"https://openalex.org/W4200426113","doi":"https://doi.org/10.1109/vtc2021-fall52928.2021.9625082","title":"Trajectory Optimization for Age of Information Minimization in UAV Communication Systems","display_name":"Trajectory Optimization for Age of Information Minimization in UAV Communication Systems","publication_year":2021,"publication_date":"2021-09-01","ids":{"openalex":"https://openalex.org/W4200426113","doi":"https://doi.org/10.1109/vtc2021-fall52928.2021.9625082"},"language":"en","primary_location":{"id":"doi:10.1109/vtc2021-fall52928.2021.9625082","is_oa":false,"landing_page_url":"https://doi.org/10.1109/vtc2021-fall52928.2021.9625082","pdf_url":null,"source":{"id":"https://openalex.org/S4363607774","display_name":"2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall)","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":"2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall)","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/A5110926909","display_name":"Baolin Yin","orcid":"https://orcid.org/0009-0004-2690-7994"},"institutions":[{"id":"https://openalex.org/I1297991670","display_name":"Southwest University of Science and Technology","ror":"https://ror.org/04d996474","country_code":"CN","type":"education","lineage":["https://openalex.org/I1297991670"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Baolin Yin","raw_affiliation_strings":["Southwest University of Science and Technology,School of Information Engineering,Mianyang,China","School of Information Engineering, Southwest University of Science and Technology, Mianyang, China"],"affiliations":[{"raw_affiliation_string":"Southwest University of Science and Technology,School of Information Engineering,Mianyang,China","institution_ids":["https://openalex.org/I1297991670"]},{"raw_affiliation_string":"School of Information Engineering, Southwest University of Science and Technology, Mianyang, China","institution_ids":["https://openalex.org/I1297991670"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100678718","display_name":"Xinmin Li","orcid":null},"institutions":[{"id":"https://openalex.org/I1297991670","display_name":"Southwest University of Science and Technology","ror":"https://ror.org/04d996474","country_code":"CN","type":"education","lineage":["https://openalex.org/I1297991670"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xinmin Li","raw_affiliation_strings":["Southwest University of Science and Technology,School of Information Engineering,Mianyang,China","School of Information Engineering, Southwest University of Science and Technology, Mianyang, China"],"affiliations":[{"raw_affiliation_string":"Southwest University of Science and Technology,School of Information Engineering,Mianyang,China","institution_ids":["https://openalex.org/I1297991670"]},{"raw_affiliation_string":"School of Information Engineering, Southwest University of Science and Technology, Mianyang, China","institution_ids":["https://openalex.org/I1297991670"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5037335978","display_name":"Xiaoqiang Zhang","orcid":"https://orcid.org/0000-0001-5340-7697"},"institutions":[{"id":"https://openalex.org/I1297991670","display_name":"Southwest University of Science and Technology","ror":"https://ror.org/04d996474","country_code":"CN","type":"education","lineage":["https://openalex.org/I1297991670"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xiaoqiang Zhang","raw_affiliation_strings":["Southwest University of Science and Technology,School of Information Engineering,Mianyang,China","School of Information Engineering, Southwest University of Science and Technology, Mianyang, China"],"affiliations":[{"raw_affiliation_string":"Southwest University of Science and Technology,School of Information Engineering,Mianyang,China","institution_ids":["https://openalex.org/I1297991670"]},{"raw_affiliation_string":"School of Information Engineering, Southwest University of Science and Technology, Mianyang, China","institution_ids":["https://openalex.org/I1297991670"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5102015710","display_name":"Lili Wei","orcid":"https://orcid.org/0009-0002-8363-7180"},"institutions":[{"id":"https://openalex.org/I1297991670","display_name":"Southwest University of Science and Technology","ror":"https://ror.org/04d996474","country_code":"CN","type":"education","lineage":["https://openalex.org/I1297991670"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Lili Wei","raw_affiliation_strings":["Southwest University of Science and Technology,School of Information Engineering,Mianyang,China","School of Information Engineering, Southwest University of Science and Technology, Mianyang, China"],"affiliations":[{"raw_affiliation_string":"Southwest University of Science and Technology,School of Information Engineering,Mianyang,China","institution_ids":["https://openalex.org/I1297991670"]},{"raw_affiliation_string":"School of Information Engineering, Southwest University of Science and Technology, Mianyang, China","institution_ids":["https://openalex.org/I1297991670"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5110926909"],"corresponding_institution_ids":["https://openalex.org/I1297991670"],"apc_list":null,"apc_paid":null,"fwci":1.848,"has_fulltext":false,"cited_by_count":7,"citation_normalized_percentile":{"value":0.8474745,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":97},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"6"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T13553","display_name":"Age of Information Optimization","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/T13553","display_name":"Age of Information Optimization","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/T12079","display_name":"IoT Networks and Protocols","score":0.9947999715805054,"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"}},{"id":"https://openalex.org/T11133","display_name":"UAV Applications and Optimization","score":0.9933000206947327,"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":0.7444813251495361},{"id":"https://openalex.org/keywords/trajectory","display_name":"Trajectory","score":0.7185216546058655},{"id":"https://openalex.org/keywords/scheme","display_name":"Scheme (mathematics)","score":0.7055156230926514},{"id":"https://openalex.org/keywords/minification","display_name":"Minification","score":0.623274564743042},{"id":"https://openalex.org/keywords/convergence","display_name":"Convergence (economics)","score":0.6081246137619019},{"id":"https://openalex.org/keywords/trajectory-optimization","display_name":"Trajectory optimization","score":0.5536431670188904},{"id":"https://openalex.org/keywords/reinforcement-learning","display_name":"Reinforcement learning","score":0.5500142574310303},{"id":"https://openalex.org/keywords/optimization-problem","display_name":"Optimization problem","score":0.4718743860721588},{"id":"https://openalex.org/keywords/communications-system","display_name":"Communications system","score":0.42078739404678345},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.4205993711948395},{"id":"https://openalex.org/keywords/function","display_name":"Function (biology)","score":0.4108276069164276},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.3567470908164978},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.20649075508117676},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.13268619775772095},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.10040166974067688},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.09266328811645508}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7444813251495361},{"id":"https://openalex.org/C13662910","wikidata":"https://www.wikidata.org/wiki/Q193139","display_name":"Trajectory","level":2,"score":0.7185216546058655},{"id":"https://openalex.org/C77618280","wikidata":"https://www.wikidata.org/wiki/Q1155772","display_name":"Scheme (mathematics)","level":2,"score":0.7055156230926514},{"id":"https://openalex.org/C147764199","wikidata":"https://www.wikidata.org/wiki/Q6865248","display_name":"Minification","level":2,"score":0.623274564743042},{"id":"https://openalex.org/C2777303404","wikidata":"https://www.wikidata.org/wiki/Q759757","display_name":"Convergence (economics)","level":2,"score":0.6081246137619019},{"id":"https://openalex.org/C173246807","wikidata":"https://www.wikidata.org/wiki/Q7833062","display_name":"Trajectory optimization","level":3,"score":0.5536431670188904},{"id":"https://openalex.org/C97541855","wikidata":"https://www.wikidata.org/wiki/Q830687","display_name":"Reinforcement learning","level":2,"score":0.5500142574310303},{"id":"https://openalex.org/C137836250","wikidata":"https://www.wikidata.org/wiki/Q984063","display_name":"Optimization problem","level":2,"score":0.4718743860721588},{"id":"https://openalex.org/C101765175","wikidata":"https://www.wikidata.org/wiki/Q577764","display_name":"Communications system","level":2,"score":0.42078739404678345},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.4205993711948395},{"id":"https://openalex.org/C14036430","wikidata":"https://www.wikidata.org/wiki/Q3736076","display_name":"Function (biology)","level":2,"score":0.4108276069164276},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.3567470908164978},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.20649075508117676},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.13268619775772095},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.10040166974067688},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.09266328811645508},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.0},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","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},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C78458016","wikidata":"https://www.wikidata.org/wiki/Q840400","display_name":"Evolutionary biology","level":1,"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/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C50522688","wikidata":"https://www.wikidata.org/wiki/Q189833","display_name":"Economic growth","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/vtc2021-fall52928.2021.9625082","is_oa":false,"landing_page_url":"https://doi.org/10.1109/vtc2021-fall52928.2021.9625082","pdf_url":null,"source":{"id":"https://openalex.org/S4363607774","display_name":"2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall)","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":"2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.5299999713897705,"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy"}],"awards":[{"id":"https://openalex.org/G2321215967","display_name":null,"funder_award_id":"202008515123","funder_id":"https://openalex.org/F4320322725","funder_display_name":"China Scholarship Council"}],"funders":[{"id":"https://openalex.org/F4320322725","display_name":"China Scholarship Council","ror":"https://ror.org/04atp4p48"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":19,"referenced_works":["https://openalex.org/W1993918491","https://openalex.org/W2031834036","https://openalex.org/W2807655913","https://openalex.org/W2962804513","https://openalex.org/W2963533436","https://openalex.org/W2964023906","https://openalex.org/W2969696334","https://openalex.org/W3013971412","https://openalex.org/W3081933036","https://openalex.org/W3082337586","https://openalex.org/W3087818589","https://openalex.org/W3088572544","https://openalex.org/W3091499726","https://openalex.org/W3122481891","https://openalex.org/W3125553008","https://openalex.org/W3130254781","https://openalex.org/W3132105662","https://openalex.org/W4211024811","https://openalex.org/W6782330479"],"related_works":["https://openalex.org/W4306904969","https://openalex.org/W2138720691","https://openalex.org/W4362501864","https://openalex.org/W4380318855","https://openalex.org/W3084456289","https://openalex.org/W3101253900","https://openalex.org/W2347892399","https://openalex.org/W2133687134","https://openalex.org/W345637666","https://openalex.org/W3038596169"],"abstract_inverted_index":{"Unmanned":[0],"aerial":[1],"vehicle":[2],"(UAV)":[3],"as":[4],"a":[5,42,101],"promising":[6],"technology":[7],"in":[8],"the":[9,20,31,38,50,56,63,84,91,96,107,118,131,135,144,149,156],"6G":[10],"communication":[11,44,111],"system":[12,45],"can":[13,121],"collect":[14],"and":[15,55,105,134,138],"transmit":[16],"information":[17,32,39,53,127],"intelligently.":[18],"However,":[19],"existing":[21],"methods":[22],"are":[23],"difficult":[24],"to":[25,29,62,70,82,99,130,143],"design":[26,83,153],"UAV's":[27],"trajectory":[28,103,152],"guarantee":[30],"freshness":[33,40,128],"performance.":[34],"In":[35,68,147],"this":[36,72],"paper,":[37],"of":[41,52,109,126],"multiple-UAV":[43],"is":[46,66,80],"modeled":[47],"based":[48],"on":[49,95],"age":[51],"(AoI)":[54],"minimization":[57],"AoI":[58,98,108],"optimization":[59,74],"problem":[60],"subjected":[61],"minimal":[64],"energy":[65],"formulated.":[67],"order":[69],"solve":[71],"nonconvex":[73],"problem,":[75],"reinforcement":[76],"learning":[77],"(RL)-based":[78],"scheme":[79,89,120,133,154],"proposed":[81,88,119,150],"UAVs'":[85],"trajectory.":[86],"The":[87,113],"constructs":[90],"reward":[92],"function":[93],"depending":[94],"accumulated":[97],"make":[100],"fast":[102],"decision":[104],"reduce":[106],"UAV":[110,151],"system.":[112],"simulation":[114],"results":[115],"show":[116],"that":[117],"improve":[122],"21.7%":[123],"performance":[124,140],"gain":[125,141],"compared":[129,142],"random":[132],"greedy":[136],"scheme,":[137],"7.7%":[139],"flying-hover-communication":[145],"scheme.":[146],"addition,":[148],"has":[155],"superior":[157],"convergence.":[158]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":3},{"year":2021,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
