{"id":"https://openalex.org/W4390098148","doi":"https://doi.org/10.23919/wiopt58741.2023.10349810","title":"Optimizing Age of Information in Uplink Multiuser MIMO Networks with Partial Observations","display_name":"Optimizing Age of Information in Uplink Multiuser MIMO Networks with Partial Observations","publication_year":2023,"publication_date":"2023-08-24","ids":{"openalex":"https://openalex.org/W4390098148","doi":"https://doi.org/10.23919/wiopt58741.2023.10349810"},"language":"en","primary_location":{"id":"doi:10.23919/wiopt58741.2023.10349810","is_oa":false,"landing_page_url":"https://doi.org/10.23919/wiopt58741.2023.10349810","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2023 21st International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)","raw_type":"proceedings-article"},"type":"conference-paper","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/A5100326781","display_name":"Jingwei Liu","orcid":"https://orcid.org/0009-0000-2782-4315"},"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":"Jingwei Liu","raw_affiliation_strings":["The Chinese University of Hong Kong,Department of Information Engineering,Hong Kong SAR,China","Department of Information Engineering, The Chinese University of Hong Kong, Hong Kong SAR, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"The Chinese University of Hong Kong,Department of Information Engineering,Hong Kong SAR,China","institution_ids":["https://openalex.org/I177725633"]},{"raw_affiliation_string":"Department of Information Engineering, The Chinese University of Hong Kong, Hong Kong SAR, China","institution_ids":["https://openalex.org/I177725633"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100390977","display_name":"Qian Wang","orcid":"https://orcid.org/0000-0001-5072-5518"},"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":"Qian Wang","raw_affiliation_strings":["The Chinese University of Hong Kong,Department of Information Engineering,Hong Kong SAR,China","Department of Information Engineering, The Chinese University of Hong Kong, Hong Kong SAR, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"The Chinese University of Hong Kong,Department of Information Engineering,Hong Kong SAR,China","institution_ids":["https://openalex.org/I177725633"]},{"raw_affiliation_string":"Department of Information Engineering, The Chinese University of Hong Kong, Hong Kong SAR, China","institution_ids":["https://openalex.org/I177725633"]}]},{"author_position":"last","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 Henry Chen","raw_affiliation_strings":["The Chinese University of Hong Kong,Department of Information Engineering,Hong Kong SAR,China","Department of Information Engineering, The Chinese University of Hong Kong, Hong Kong SAR, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"The Chinese University of Hong Kong,Department of Information Engineering,Hong Kong SAR,China","institution_ids":["https://openalex.org/I177725633"]},{"raw_affiliation_string":"Department of Information Engineering, The Chinese University of Hong Kong, Hong Kong SAR, China","institution_ids":["https://openalex.org/I177725633"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I177725633"],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"135","last_page":"142"},"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":0.9807999730110168,"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":0.9128000140190125,"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/computer-science","display_name":"Computer science","score":0.7434420585632324},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.7155157923698425},{"id":"https://openalex.org/keywords/partially-observable-markov-decision-process","display_name":"Partially observable Markov decision process","score":0.7137853503227234},{"id":"https://openalex.org/keywords/scheduling","display_name":"Scheduling (production processes)","score":0.6782609820365906},{"id":"https://openalex.org/keywords/random-access","display_name":"Random access","score":0.6205185651779175},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.5693450570106506},{"id":"https://openalex.org/keywords/markov-decision-process","display_name":"Markov decision process","score":0.48428720235824585},{"id":"https://openalex.org/keywords/markov-chain","display_name":"Markov chain","score":0.43051743507385254},{"id":"https://openalex.org/keywords/independent-and-identically-distributed-random-variables","display_name":"Independent and identically distributed random variables","score":0.4101071357727051},{"id":"https://openalex.org/keywords/markov-process","display_name":"Markov process","score":0.395824134349823},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.3590140640735626},{"id":"https://openalex.org/keywords/distributed-computing","display_name":"Distributed computing","score":0.351563423871994},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.3396926522254944},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.27259260416030884},{"id":"https://openalex.org/keywords/random-variable","display_name":"Random variable","score":0.2206716239452362},{"id":"https://openalex.org/keywords/markov-model","display_name":"Markov model","score":0.1935117542743683},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.12887641787528992},{"id":"https://openalex.org/keywords/machine-learning","display_name":"Machine learning","score":0.10446470975875854}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7434420585632324},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.7155157923698425},{"id":"https://openalex.org/C17098449","wikidata":"https://www.wikidata.org/wiki/Q176814","display_name":"Partially observable Markov decision process","level":4,"score":0.7137853503227234},{"id":"https://openalex.org/C206729178","wikidata":"https://www.wikidata.org/wiki/Q2271896","display_name":"Scheduling (production processes)","level":2,"score":0.6782609820365906},{"id":"https://openalex.org/C101722063","wikidata":"https://www.wikidata.org/wiki/Q218825","display_name":"Random access","level":2,"score":0.6205185651779175},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.5693450570106506},{"id":"https://openalex.org/C106189395","wikidata":"https://www.wikidata.org/wiki/Q176789","display_name":"Markov decision process","level":3,"score":0.48428720235824585},{"id":"https://openalex.org/C98763669","wikidata":"https://www.wikidata.org/wiki/Q176645","display_name":"Markov chain","level":2,"score":0.43051743507385254},{"id":"https://openalex.org/C141513077","wikidata":"https://www.wikidata.org/wiki/Q378542","display_name":"Independent and identically distributed random variables","level":3,"score":0.4101071357727051},{"id":"https://openalex.org/C159886148","wikidata":"https://www.wikidata.org/wiki/Q176645","display_name":"Markov process","level":2,"score":0.395824134349823},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.3590140640735626},{"id":"https://openalex.org/C120314980","wikidata":"https://www.wikidata.org/wiki/Q180634","display_name":"Distributed computing","level":1,"score":0.351563423871994},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.3396926522254944},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.27259260416030884},{"id":"https://openalex.org/C122123141","wikidata":"https://www.wikidata.org/wiki/Q176623","display_name":"Random variable","level":2,"score":0.2206716239452362},{"id":"https://openalex.org/C163836022","wikidata":"https://www.wikidata.org/wiki/Q6771326","display_name":"Markov model","level":3,"score":0.1935117542743683},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.12887641787528992},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.10446470975875854},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.0},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.23919/wiopt58741.2023.10349810","is_oa":false,"landing_page_url":"https://doi.org/10.23919/wiopt58741.2023.10349810","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2023 21st International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G3607357566","display_name":"Information Freshness-Oriented Random Access: From Theory to Practical Implementation","funder_award_id":"ITS/204/20","funder_id":"https://openalex.org/F4320326427","funder_display_name":"Innovation and Technology Fund"},{"id":"https://openalex.org/G6071823571","display_name":null,"funder_award_id":"4055166","funder_id":"https://openalex.org/F4320322942","funder_display_name":"Chinese University of Hong Kong"},{"id":"https://openalex.org/G7919533748","display_name":"Enabling Ultrareliable Low-latency Wireless Communications for Industrial IoT: A Noncoherent Multiuser Massive MIMO Framework","funder_award_id":"14205020","funder_id":"https://openalex.org/F4320321592","funder_display_name":"Research Grants Council, University Grants Committee"}],"funders":[{"id":"https://openalex.org/F4320321592","display_name":"Research Grants Council, University Grants Committee","ror":"https://ror.org/00djwmt25"},{"id":"https://openalex.org/F4320322942","display_name":"Chinese University of Hong Kong","ror":"https://ror.org/00t33hh48"},{"id":"https://openalex.org/F4320326427","display_name":"Innovation and Technology Fund","ror":null}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":13,"referenced_works":["https://openalex.org/W2125933266","https://openalex.org/W2137152139","https://openalex.org/W2146487252","https://openalex.org/W2168359464","https://openalex.org/W2963270598","https://openalex.org/W2995433474","https://openalex.org/W3082478152","https://openalex.org/W3102260691","https://openalex.org/W3138649231","https://openalex.org/W3198713257","https://openalex.org/W4205984110","https://openalex.org/W4211024811","https://openalex.org/W4362683620"],"related_works":["https://openalex.org/W2096013579","https://openalex.org/W52153049","https://openalex.org/W1760611253","https://openalex.org/W1589140671","https://openalex.org/W1515117609","https://openalex.org/W4323315247","https://openalex.org/W2294884454","https://openalex.org/W3169161914","https://openalex.org/W4321379664","https://openalex.org/W2211790881"],"abstract_inverted_index":{"This":[0],"paper":[1],"investigates":[2],"a":[3,18,126,163,207],"multiuser":[4],"scheduling":[5,115,165],"problem":[6],"within":[7],"an":[8,174],"uplink":[9],"multiple-input":[10],"multi-output":[11],"(MIMO)":[12],"status":[13,42,86],"update":[14],"network,":[15],"consisting":[16],"of":[17,29,41,64,85,102,106,138,210],"multi-antenna":[19],"access":[20],"point":[21],"(AP)":[22],"and":[23,133,172,199],"multiple":[24,30,45],"single-antenna":[25],"devices.":[26,211],"The":[27],"presence":[28],"an-tennas":[31],"at":[32,88,110],"the":[33,62,71,82,89,97,103,107,136,170,183,187,195,202],"AP":[34,72,98],"introduces":[35],"spatial":[36],"degrees-of-freedom,":[37],"enabling":[38],"concurrent":[39],"transmission":[40],"updates":[43,87,109],"from":[44],"devices":[46,143],"in":[47],"each":[48,111],"time":[49,105],"slot.":[50],"Our":[51,178],"objective":[52],"is":[53,93,144],"to":[54,149,168,194],"optimize":[55],"network-wide":[56],"information":[57,65],"freshness,":[58],"as":[59,125],"measured":[60],"by":[61,68],"age":[63],"(AoI)":[66],"metric,":[67],"determining":[69],"how":[70],"can":[73],"best":[74],"schedule":[75],"device":[76,90,112],"transmissions,":[77],"while":[78],"taking":[79],"into":[80],"account":[81],"random":[83],"arrival":[84],"side.":[91],"It":[92],"worth":[94],"noting":[95],"that":[96,135,182,205],"has":[99],"partial":[100],"observations":[101],"system":[104],"latest":[108],"when":[113],"making":[114],"decisions.":[116],"To":[117],"address":[118],"this":[119,159],"decision-making":[120],"problem,":[121],"we":[122,161],"model":[123],"it":[124],"partially":[127],"observable":[128],"Markov":[129],"decision":[130],"process":[131],"(POMDP)":[132],"establish":[134],"evolution":[137],"belief":[139,152],"states":[140,153],"for":[141],"different":[142],"independent.":[145],"We":[146],"also":[147],"manage":[148],"characterize":[150],"feasible":[151],"using":[154],"three-dimensional":[155],"vectors.":[156],"Building":[157],"on":[158],"foundation,":[160],"develop":[162],"dynamic":[164],"(DS)":[166],"policy":[167,185,204],"solve":[169],"POMDP":[171],"implement":[173],"action":[175,189],"space":[176,190],"reduction.":[177],"numerical":[179],"results":[180],"indicate":[181],"DS":[184,197],"with":[186],"reduced":[188],"performs":[191],"almost":[192],"identically":[193],"original":[196],"policy,":[198],"both":[200],"outperform":[201],"baseline":[203],"schedules":[206],"fixed":[208],"number":[209]},"counts_by_year":[{"year":2024,"cited_by_count":1}],"updated_date":"2026-07-14T23:27:15.235271","created_date":"2025-10-10T00:00:00"}
