{"id":"https://openalex.org/W4200387272","doi":"https://doi.org/10.1109/vtc2021-fall52928.2021.9625458","title":"Peak Age of Information Minimization in UAV-assisted Cognitive Relay Networks","display_name":"Peak Age of Information Minimization in UAV-assisted Cognitive Relay Networks","publication_year":2021,"publication_date":"2021-09-01","ids":{"openalex":"https://openalex.org/W4200387272","doi":"https://doi.org/10.1109/vtc2021-fall52928.2021.9625458"},"language":"en","primary_location":{"id":"doi:10.1109/vtc2021-fall52928.2021.9625458","is_oa":false,"landing_page_url":"https://doi.org/10.1109/vtc2021-fall52928.2021.9625458","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/A5034021921","display_name":"Shengnan Cao","orcid":"https://orcid.org/0009-0005-9581-9792"},"institutions":[{"id":"https://openalex.org/I68986083","display_name":"Northwest Normal University","ror":"https://ror.org/00gx3j908","country_code":"CN","type":"education","lineage":["https://openalex.org/I68986083"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Shengnan Cao","raw_affiliation_strings":["College of Computer Science and Engineering, Northwest Normal University, Lanzhou, China"],"affiliations":[{"raw_affiliation_string":"College of Computer Science and Engineering, Northwest Normal University, Lanzhou, China","institution_ids":["https://openalex.org/I68986083"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5002217587","display_name":"Xiangdong Jia","orcid":null},"institutions":[{"id":"https://openalex.org/I41198531","display_name":"Nanjing University of Posts and Telecommunications","ror":"https://ror.org/043bpky34","country_code":"CN","type":"education","lineage":["https://openalex.org/I41198531"]},{"id":"https://openalex.org/I68986083","display_name":"Northwest Normal University","ror":"https://ror.org/00gx3j908","country_code":"CN","type":"education","lineage":["https://openalex.org/I68986083"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xiangdong Jia","raw_affiliation_strings":["College of Computer Science and Engineering, Northwest Normal University, Lanzhou, China","Wireless Communication Key Lab of Jiangsu Province, Nanjing University of Posts and Telecommunications, Nanjing, China"],"affiliations":[{"raw_affiliation_string":"College of Computer Science and Engineering, Northwest Normal University, Lanzhou, China","institution_ids":["https://openalex.org/I68986083"]},{"raw_affiliation_string":"Wireless Communication Key Lab of Jiangsu Province, Nanjing University of Posts and Telecommunications, Nanjing, China","institution_ids":["https://openalex.org/I41198531"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5102437939","display_name":"Yixuan Guo","orcid":null},"institutions":[{"id":"https://openalex.org/I68986083","display_name":"Northwest Normal University","ror":"https://ror.org/00gx3j908","country_code":"CN","type":"education","lineage":["https://openalex.org/I68986083"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yixuan Guo","raw_affiliation_strings":["College of Computer Science and Engineering, Northwest Normal University, Lanzhou, China"],"affiliations":[{"raw_affiliation_string":"College of Computer Science and Engineering, Northwest Normal University, Lanzhou, China","institution_ids":["https://openalex.org/I68986083"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5034021921"],"corresponding_institution_ids":["https://openalex.org/I68986083"],"apc_list":null,"apc_paid":null,"fwci":2.464,"has_fulltext":false,"cited_by_count":9,"citation_normalized_percentile":{"value":0.90296094,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":90,"max":98},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"5"},"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":0.9718999862670898,"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/T10300","display_name":"Congenital Heart Disease Studies","score":0.9538999795913696,"subfield":{"id":"https://openalex.org/subfields/2713","display_name":"Epidemiology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.7858014702796936},{"id":"https://openalex.org/keywords/relay","display_name":"Relay","score":0.7733091711997986},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6720190048217773},{"id":"https://openalex.org/keywords/minification","display_name":"Minification","score":0.5794996023178101},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.5295981764793396},{"id":"https://openalex.org/keywords/trajectory","display_name":"Trajectory","score":0.4937473237514496},{"id":"https://openalex.org/keywords/convex-optimization","display_name":"Convex optimization","score":0.4659619629383087},{"id":"https://openalex.org/keywords/duplex","display_name":"Duplex (building)","score":0.4656928777694702},{"id":"https://openalex.org/keywords/cognitive-radio","display_name":"Cognitive radio","score":0.4650963544845581},{"id":"https://openalex.org/keywords/interference","display_name":"Interference (communication)","score":0.4647350311279297},{"id":"https://openalex.org/keywords/scheme","display_name":"Scheme (mathematics)","score":0.4629415273666382},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.33746853470802307},{"id":"https://openalex.org/keywords/regular-polygon","display_name":"Regular polygon","score":0.33371907472610474},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.29572784900665283},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.18627524375915527},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.12373241782188416},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.09848204255104065}],"concepts":[{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.7858014702796936},{"id":"https://openalex.org/C2778156585","wikidata":"https://www.wikidata.org/wiki/Q174053","display_name":"Relay","level":3,"score":0.7733091711997986},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6720190048217773},{"id":"https://openalex.org/C147764199","wikidata":"https://www.wikidata.org/wiki/Q6865248","display_name":"Minification","level":2,"score":0.5794996023178101},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.5295981764793396},{"id":"https://openalex.org/C13662910","wikidata":"https://www.wikidata.org/wiki/Q193139","display_name":"Trajectory","level":2,"score":0.4937473237514496},{"id":"https://openalex.org/C157972887","wikidata":"https://www.wikidata.org/wiki/Q463359","display_name":"Convex optimization","level":3,"score":0.4659619629383087},{"id":"https://openalex.org/C99611785","wikidata":"https://www.wikidata.org/wiki/Q6453233","display_name":"Duplex (building)","level":3,"score":0.4656928777694702},{"id":"https://openalex.org/C149946192","wikidata":"https://www.wikidata.org/wiki/Q3235733","display_name":"Cognitive radio","level":3,"score":0.4650963544845581},{"id":"https://openalex.org/C32022120","wikidata":"https://www.wikidata.org/wiki/Q797225","display_name":"Interference (communication)","level":3,"score":0.4647350311279297},{"id":"https://openalex.org/C77618280","wikidata":"https://www.wikidata.org/wiki/Q1155772","display_name":"Scheme (mathematics)","level":2,"score":0.4629415273666382},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.33746853470802307},{"id":"https://openalex.org/C112680207","wikidata":"https://www.wikidata.org/wiki/Q714886","display_name":"Regular polygon","level":2,"score":0.33371907472610474},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.29572784900665283},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.18627524375915527},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.12373241782188416},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.09848204255104065},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"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/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C54355233","wikidata":"https://www.wikidata.org/wiki/Q7162","display_name":"Genetics","level":1,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","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/C163258240","wikidata":"https://www.wikidata.org/wiki/Q25342","display_name":"Power (physics)","level":2,"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/C552990157","wikidata":"https://www.wikidata.org/wiki/Q7430","display_name":"DNA","level":2,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/vtc2021-fall52928.2021.9625458","is_oa":false,"landing_page_url":"https://doi.org/10.1109/vtc2021-fall52928.2021.9625458","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"},{"id":"pmh:oai:ir.lzu.edu.cn/:262010/468364","is_oa":false,"landing_page_url":"http://ir.lzu.edu.cn/handle/262010/468364","pdf_url":null,"source":{"id":"https://openalex.org/S4406923049","display_name":"Lanzhou University Institutional Repository","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":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"\u4f1a\u8bae\u8bba\u6587"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G7702826171","display_name":null,"funder_award_id":"61861039","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":15,"referenced_works":["https://openalex.org/W1993918491","https://openalex.org/W2005503805","https://openalex.org/W2030093752","https://openalex.org/W2066786775","https://openalex.org/W2144916297","https://openalex.org/W2742988081","https://openalex.org/W2744248483","https://openalex.org/W2796882881","https://openalex.org/W2892275535","https://openalex.org/W2941668489","https://openalex.org/W2944580845","https://openalex.org/W3019935896","https://openalex.org/W3101996971","https://openalex.org/W4205984110","https://openalex.org/W7066534461"],"related_works":["https://openalex.org/W2548963335","https://openalex.org/W2159941915","https://openalex.org/W1995129237","https://openalex.org/W4388081250","https://openalex.org/W2909457694","https://openalex.org/W1761601995","https://openalex.org/W2904599916","https://openalex.org/W4321608401","https://openalex.org/W4300468626","https://openalex.org/W3193749313"],"abstract_inverted_index":{"Age":[0],"of":[1,18,104,124],"information":[2],"(AoI)":[3],"is":[4,12,84],"a":[5,52],"new":[6],"performance":[7],"index":[8],"proposed":[9,115],"recently,":[10],"which":[11],"used":[13],"to":[14,95],"describe":[15],"the":[16,29,39,46,73,81,97,102,114,122],"freshness":[17,123],"information.":[19,125],"This":[20],"paper":[21],"studies":[22],"<tex":[23],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[24],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">$A$</tex>":[25],"oI":[26],"minimization":[27,69],"for":[28,60],"unmanned":[30],"aerial":[31],"vehicle":[32],"(UAV)-assisted":[33],"cognitive":[34],"radio":[35],"networks":[36],"(CRN),":[37],"where":[38],"primary":[40],"users":[41,44],"and":[42,49,62,77,107],"secondary":[43],"share":[45],"authorized":[47],"spectrum,":[48],"UAV":[50,74],"as":[51],"relay":[53],"adopts":[54],"time":[55],"division":[56],"duplex":[57],"(TDD)":[58],"scheme":[59,118],"uplink":[61],"downlink":[63],"transmissions.":[64],"We":[65],"focus":[66],"on":[67],"AoI":[68],"by":[70],"jointly":[71],"optimizing":[72],"flight":[75],"trajectory":[76],"resource":[78],"allocation.":[79],"Since":[80],"optimization":[82],"problem":[83],"non-convex,":[85],"we":[86],"use":[87],"an":[88],"efficient":[89],"successive":[90],"convex":[91],"approximation":[92],"iterative":[93],"algorithm":[94],"solve":[96],"optimal":[98],"solution,":[99],"while":[100],"satisfying":[101],"conditions":[103],"interference":[105],"threshold":[106],"feasibility":[108],"constraints.":[109],"Simulation":[110],"results":[111],"show":[112],"that":[113],"joint":[116],"design":[117],"can":[119],"effectively":[120],"improve":[121]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":5},{"year":2022,"cited_by_count":2}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
