{"id":"https://openalex.org/W3081560128","doi":"https://doi.org/10.1109/twc.2020.3019056","title":"Minimizing the Age of Information of Cognitive Radio-Based IoT Systems Under a Collision Constraint","display_name":"Minimizing the Age of Information of Cognitive Radio-Based IoT Systems Under a Collision Constraint","publication_year":2020,"publication_date":"2020-09-01","ids":{"openalex":"https://openalex.org/W3081560128","doi":"https://doi.org/10.1109/twc.2020.3019056","mag":"3081560128"},"language":"en","primary_location":{"id":"doi:10.1109/twc.2020.3019056","is_oa":false,"landing_page_url":"https://doi.org/10.1109/twc.2020.3019056","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":"https://openalex.org/A5100390977","display_name":"Qian Wang","orcid":"https://orcid.org/0000-0001-5072-5518"},"institutions":[{"id":"https://openalex.org/I129604602","display_name":"The University of Sydney","ror":"https://ror.org/0384j8v12","country_code":"AU","type":"education","lineage":["https://openalex.org/I129604602"]},{"id":"https://openalex.org/I177725633","display_name":"Chinese University of Hong Kong","ror":"https://ror.org/00t33hh48","country_code":"HK","type":"education","lineage":["https://openalex.org/I177725633"]}],"countries":["AU","HK"],"is_corresponding":false,"raw_author_name":"Qian Wang","raw_affiliation_strings":["School of Electrical and Information Engineering, The University of Sydney, Sydney, NSW, Australia","The Chinese University of Hong Kong, Hong Kong SAR, China"],"raw_orcid":"https://orcid.org/0000-0001-5072-5518","affiliations":[{"raw_affiliation_string":"School of Electrical and Information Engineering, The University of Sydney, Sydney, NSW, Australia","institution_ids":["https://openalex.org/I129604602"]},{"raw_affiliation_string":"The Chinese University of Hong Kong, Hong Kong SAR, China","institution_ids":["https://openalex.org/I177725633"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100327671","display_name":"He Chen","orcid":"https://orcid.org/0000-0001-8886-9680"},"institutions":[{"id":"https://openalex.org/I177725633","display_name":"Chinese University of Hong Kong","ror":"https://ror.org/00t33hh48","country_code":"HK","type":"education","lineage":["https://openalex.org/I177725633"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"He Chen","raw_affiliation_strings":["The Chinese University of Hong Kong, Hong Kong SAR, China"],"raw_orcid":"https://orcid.org/0000-0001-8886-9680","affiliations":[{"raw_affiliation_string":"The Chinese University of Hong Kong, Hong Kong SAR, China","institution_ids":["https://openalex.org/I177725633"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5032726332","display_name":"Y. T. Gu","orcid":"https://orcid.org/0000-0002-9648-4913"},"institutions":[{"id":"https://openalex.org/I129604602","display_name":"The University of Sydney","ror":"https://ror.org/0384j8v12","country_code":"AU","type":"education","lineage":["https://openalex.org/I129604602"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Yifan Gu","raw_affiliation_strings":["School of Electrical and Information Engineering, The University of Sydney, Sydney, NSW, Australia"],"raw_orcid":"https://orcid.org/0000-0002-9648-4913","affiliations":[{"raw_affiliation_string":"School of Electrical and Information Engineering, The University of Sydney, Sydney, NSW, Australia","institution_ids":["https://openalex.org/I129604602"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100448724","display_name":"Yonghui Li","orcid":"https://orcid.org/0000-0001-7702-1123"},"institutions":[{"id":"https://openalex.org/I129604602","display_name":"The University of Sydney","ror":"https://ror.org/0384j8v12","country_code":"AU","type":"education","lineage":["https://openalex.org/I129604602"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Yonghui Li","raw_affiliation_strings":["School of Electrical and Information Engineering, The University of Sydney, Sydney, NSW, Australia"],"raw_orcid":"https://orcid.org/0000-0001-7702-1123","affiliations":[{"raw_affiliation_string":"School of Electrical and Information Engineering, The University of Sydney, Sydney, NSW, Australia","institution_ids":["https://openalex.org/I129604602"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5043371405","display_name":"Branka Vucetic","orcid":"https://orcid.org/0000-0002-2700-2001"},"institutions":[{"id":"https://openalex.org/I177725633","display_name":"Chinese University of Hong Kong","ror":"https://ror.org/00t33hh48","country_code":"HK","type":"education","lineage":["https://openalex.org/I177725633"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"Branka Vucetic","raw_affiliation_strings":["The Chinese University of Hong Kong, Hong Kong SAR, China"],"raw_orcid":"https://orcid.org/0000-0002-2700-2001","affiliations":[{"raw_affiliation_string":"The Chinese University of Hong Kong, Hong Kong SAR, China","institution_ids":["https://openalex.org/I177725633"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":7.4186,"has_fulltext":false,"cited_by_count":60,"citation_normalized_percentile":{"value":0.974715,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":96,"max":99},"biblio":{"volume":"19","issue":"12","first_page":"8054","last_page":"8067"},"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/T10300","display_name":"Congenital Heart Disease Studies","score":0.9890999794006348,"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"}},{"id":"https://openalex.org/T12079","display_name":"IoT Networks and Protocols","score":0.9455000162124634,"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/cognitive-radio","display_name":"Cognitive radio","score":0.7674955129623413},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6527109146118164},{"id":"https://openalex.org/keywords/context","display_name":"Context (archaeology)","score":0.5615374445915222},{"id":"https://openalex.org/keywords/markov-decision-process","display_name":"Markov decision process","score":0.5551674365997314},{"id":"https://openalex.org/keywords/metric","display_name":"Metric (unit)","score":0.5369935035705566},{"id":"https://openalex.org/keywords/markov-process","display_name":"Markov process","score":0.5177180171012878},{"id":"https://openalex.org/keywords/constraint","display_name":"Constraint (computer-aided design)","score":0.5072717070579529},{"id":"https://openalex.org/keywords/markov-chain","display_name":"Markov chain","score":0.4961865544319153},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.45507848262786865},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.26980218291282654},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.213184654712677},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.14576691389083862},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.09023621678352356},{"id":"https://openalex.org/keywords/machine-learning","display_name":"Machine learning","score":0.08140173554420471},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.08101406693458557}],"concepts":[{"id":"https://openalex.org/C149946192","wikidata":"https://www.wikidata.org/wiki/Q3235733","display_name":"Cognitive radio","level":3,"score":0.7674955129623413},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6527109146118164},{"id":"https://openalex.org/C2779343474","wikidata":"https://www.wikidata.org/wiki/Q3109175","display_name":"Context (archaeology)","level":2,"score":0.5615374445915222},{"id":"https://openalex.org/C106189395","wikidata":"https://www.wikidata.org/wiki/Q176789","display_name":"Markov decision process","level":3,"score":0.5551674365997314},{"id":"https://openalex.org/C176217482","wikidata":"https://www.wikidata.org/wiki/Q860554","display_name":"Metric (unit)","level":2,"score":0.5369935035705566},{"id":"https://openalex.org/C159886148","wikidata":"https://www.wikidata.org/wiki/Q176645","display_name":"Markov process","level":2,"score":0.5177180171012878},{"id":"https://openalex.org/C2776036281","wikidata":"https://www.wikidata.org/wiki/Q48769818","display_name":"Constraint (computer-aided design)","level":2,"score":0.5072717070579529},{"id":"https://openalex.org/C98763669","wikidata":"https://www.wikidata.org/wiki/Q176645","display_name":"Markov chain","level":2,"score":0.4961865544319153},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.45507848262786865},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.26980218291282654},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.213184654712677},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.14576691389083862},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.09023621678352356},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.08140173554420471},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.08101406693458557},{"id":"https://openalex.org/C21547014","wikidata":"https://www.wikidata.org/wiki/Q1423657","display_name":"Operations management","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/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/twc.2020.3019056","is_oa":false,"landing_page_url":"https://doi.org/10.1109/twc.2020.3019056","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":[{"display_name":"Peace, Justice and strong institutions","id":"https://metadata.un.org/sdg/16","score":0.75}],"awards":[{"id":"https://openalex.org/G2752632411","display_name":null,"funder_award_id":"4055126","funder_id":"https://openalex.org/F4320322942","funder_display_name":"Chinese University of Hong Kong"},{"id":"https://openalex.org/G8132340549","display_name":"Short code design for mission critical communications","funder_award_id":"DP190101988","funder_id":"https://openalex.org/F4320334704","funder_display_name":"Australian Research Council"},{"id":"https://openalex.org/G8281838290","display_name":"Ultralow latency wireless systems","funder_award_id":"FL160100032","funder_id":"https://openalex.org/F4320334704","funder_display_name":"Australian Research Council"}],"funders":[{"id":"https://openalex.org/F4320322942","display_name":"Chinese University of Hong Kong","ror":"https://ror.org/00t33hh48"},{"id":"https://openalex.org/F4320334704","display_name":"Australian Research Council","ror":"https://ror.org/05mmh0f86"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":34,"referenced_works":["https://openalex.org/W1518931405","https://openalex.org/W1976407947","https://openalex.org/W1993918491","https://openalex.org/W2025829026","https://openalex.org/W2032233621","https://openalex.org/W2097861666","https://openalex.org/W2107872937","https://openalex.org/W2115400030","https://openalex.org/W2119429640","https://openalex.org/W2125142879","https://openalex.org/W2165511051","https://openalex.org/W2169427485","https://openalex.org/W2525959385","https://openalex.org/W2690196614","https://openalex.org/W2744248483","https://openalex.org/W2751371236","https://openalex.org/W2791487310","https://openalex.org/W2897098321","https://openalex.org/W2915151495","https://openalex.org/W2917981112","https://openalex.org/W2942228371","https://openalex.org/W2944580845","https://openalex.org/W2962747376","https://openalex.org/W2963782453","https://openalex.org/W2964023187","https://openalex.org/W2966441493","https://openalex.org/W2971038916","https://openalex.org/W3003320304","https://openalex.org/W3003589928","https://openalex.org/W3009695899","https://openalex.org/W3023283283","https://openalex.org/W4230872744","https://openalex.org/W4233840023","https://openalex.org/W4301253858"],"related_works":["https://openalex.org/W2559261346","https://openalex.org/W4280609833","https://openalex.org/W2379651310","https://openalex.org/W2113019827","https://openalex.org/W1541249122","https://openalex.org/W2413828414","https://openalex.org/W2367222340","https://openalex.org/W187740018","https://openalex.org/W2162286586","https://openalex.org/W4255368532"],"abstract_inverted_index":{"This":[0],"article":[1],"considers":[2],"a":[3,21,32,109,149,180,191,202],"cognitive":[4,24],"radio-based":[5],"IoT":[6,12,29],"monitoring":[7],"system,":[8],"consisting":[9],"of":[10,42,73,86,92,104,113,120,124,135,161,165,211,277,291],"an":[11,231],"device":[13,30],"that":[14,184,196],"aims":[15],"to":[16,20,52,60,80,82,116,129,178,234,241],"update":[17,95,123],"its":[18,48],"measurement":[19],"destination":[22,99],"using":[23],"radio":[25],"technique.":[26],"Specifically,":[27],"the":[28,39,43,61,67,74,84,87,93,98,101,105,118,121,125,131,136,140,145,159,166,197,208,218,236,243,251,260,265,269,275,278,283,289,296,301],"as":[31],"secondary":[33],"user":[34,50],"(SIoT),":[35],"seeks":[36],"and":[37,77,205,214,238,258,300],"exploits":[38],"spectrum":[40],"opportunities":[41],"licensed":[44,62,75],"band":[45,76],"vacated":[46],"by":[47,144,147,222],"primary":[49],"(PU)":[51],"deliver":[53],"status":[54,88,94,122],"updates":[55],"without":[56],"causing":[57],"visible":[58],"effects":[59],"operation.":[63],"In":[64],"this":[65],"context,":[66],"SIoT":[68,137],"should":[69],"carefully":[70],"make":[71],"use":[72],"schedule":[78],"when":[79],"transmit":[81],"maintain":[83],"timeliness":[85,91,119],"update.":[89],"The":[90,169,227],"characterizes":[96],"how":[97],"knows":[100],"latest":[102],"information":[103],"SIoT.":[106,126],"We":[107,127,156,194,286],"adopt":[108],"recent":[110],"metric,":[111],"Age":[112],"Information":[114],"(AoI),":[115],"characterize":[117],"aim":[128],"minimize":[130],"long-term":[132],"average":[133,212,261,303],"AoI":[134,213,262],"while":[138],"satisfying":[139],"collision":[141,215],"constraint":[142],"imposed":[143],"PU":[146],"formulating":[148],"constrained":[150],"Markov":[151,224],"decision":[152],"process":[153],"(CMDP)":[154],"problem.":[155,168],"first":[157],"prove":[158,195],"existence":[160],"optimal":[162,170,298],"stationary":[163,171],"policy":[164,172,183,221,254,267,281,299],"CMDP":[167],"(termed":[173,255],"age-optimal":[174,244,280],"policy)":[175,257],"is":[176],"shown":[177],"be":[179],"randomized":[181],"simple":[182],"randomizes":[185],"between":[186],"two":[187,198],"deterministic":[188,199,219],"policies":[189,200],"with":[190],"fixed":[192],"probability.":[193],"have":[201],"threshold":[203,237],"structure":[204],"further":[206],"derive":[207],"closed-form":[209],"expression":[210,229],"probability":[216,240],"for":[217],"threshold-structured":[220],"conducting":[223],"Chain":[225],"analysis.":[226],"analytical":[228],"offers":[230],"efficient":[232],"way":[233],"calculate":[235],"randomization":[239],"form":[242],"policy.":[245,285],"For":[246],"comparison,":[247],"we":[248],"also":[249,287],"consider":[250],"throughput":[252],"maximization":[253],"throughput-optimal":[256,266,284],"analyze":[259],"performance":[263],"under":[264],"in":[268],"considered":[270],"system.":[271],"Numerical":[272],"simulations":[273],"show":[274],"superiority":[276],"derived":[279],"over":[282],"unveil":[288],"impacts":[290],"various":[292],"system":[293],"parameters":[294],"on":[295],"corresponding":[297],"resultant":[302],"AoI.":[304]},"counts_by_year":[{"year":2025,"cited_by_count":3},{"year":2024,"cited_by_count":9},{"year":2023,"cited_by_count":11},{"year":2022,"cited_by_count":12},{"year":2021,"cited_by_count":14},{"year":2020,"cited_by_count":11}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
