{"id":"https://openalex.org/W4410738081","doi":"https://doi.org/10.1109/tcomm.2025.3573391","title":"Optimizing AoI at Query in Multiuser Wireless Uplink Networks: A Whittle Index Approach","display_name":"Optimizing AoI at Query in Multiuser Wireless Uplink Networks: A Whittle Index Approach","publication_year":2025,"publication_date":"2025-05-26","ids":{"openalex":"https://openalex.org/W4410738081","doi":"https://doi.org/10.1109/tcomm.2025.3573391"},"language":"en","primary_location":{"id":"doi:10.1109/tcomm.2025.3573391","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcomm.2025.3573391","pdf_url":null,"source":{"id":"https://openalex.org/S196647941","display_name":"IEEE Transactions on Communications","issn_l":"0090-6778","issn":["0090-6778","1558-0857"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","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 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":null,"display_name":"Jingwei Liu","orcid":"https://orcid.org/0009-0000-3111-026X"},"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":["Department of Information Engineering, The Chinese University of Hong Kong, Hong Kong, SAR, China","Department of Information Engineering, The Chinese University of Hong Kong, Hong Kong SAR, China"],"raw_orcid":"https://orcid.org/0009-0000-3111-026X","affiliations":[{"raw_affiliation_string":"Department of Information Engineering, The Chinese University of Hong Kong, 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 Chen","raw_affiliation_strings":["Department of Information Engineering, The Chinese University of Hong Kong, Hong Kong, SAR, China","Department of Information Engineering, The Chinese University of Hong Kong, Hong Kong SAR, China"],"raw_orcid":"https://orcid.org/0000-0001-8886-9680","affiliations":[{"raw_affiliation_string":"Department of Information Engineering, The Chinese University of Hong Kong, 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":2.8166,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.90970514,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":91,"max":98},"biblio":{"volume":"73","issue":"11","first_page":"10318","last_page":"10329"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10273","display_name":"IoT and Edge/Fog Computing","score":0.9894999861717224,"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/T10273","display_name":"IoT and Edge/Fog Computing","score":0.9894999861717224,"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":0.9833999872207642,"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/T10080","display_name":"Energy Efficient Wireless Sensor Networks","score":0.975600004196167,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.810326337814331},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.674188494682312},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.5586757063865662},{"id":"https://openalex.org/keywords/index","display_name":"Index (typography)","score":0.4957226514816284},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.43535804748535156},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.2461910843849182}],"concepts":[{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.810326337814331},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.674188494682312},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.5586757063865662},{"id":"https://openalex.org/C2777382242","wikidata":"https://www.wikidata.org/wiki/Q6017816","display_name":"Index (typography)","level":2,"score":0.4957226514816284},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.43535804748535156},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.2461910843849182},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tcomm.2025.3573391","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcomm.2025.3573391","pdf_url":null,"source":{"id":"https://openalex.org/S196647941","display_name":"IEEE Transactions on Communications","issn_l":"0090-6778","issn":["0090-6778","1558-0857"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","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 Communications","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/9","display_name":"Industry, innovation and infrastructure","score":0.4300000071525574}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":41,"referenced_works":["https://openalex.org/W1993918491","https://openalex.org/W2032100464","https://openalex.org/W2033705007","https://openalex.org/W2039479710","https://openalex.org/W2042545035","https://openalex.org/W2044502527","https://openalex.org/W2056921512","https://openalex.org/W2065284701","https://openalex.org/W2083868427","https://openalex.org/W2146487252","https://openalex.org/W2364839527","https://openalex.org/W2567921381","https://openalex.org/W2744248483","https://openalex.org/W2756717425","https://openalex.org/W2791487310","https://openalex.org/W2825335763","https://openalex.org/W2945729351","https://openalex.org/W2963270598","https://openalex.org/W2963524120","https://openalex.org/W2963782453","https://openalex.org/W2969447045","https://openalex.org/W2974930049","https://openalex.org/W2977041145","https://openalex.org/W2992286867","https://openalex.org/W2995116859","https://openalex.org/W2995485083","https://openalex.org/W3045939557","https://openalex.org/W3097276919","https://openalex.org/W3134845586","https://openalex.org/W3160249156","https://openalex.org/W3203778212","https://openalex.org/W3209370296","https://openalex.org/W4205984110","https://openalex.org/W4289713065","https://openalex.org/W4296912959","https://openalex.org/W4321488450","https://openalex.org/W4379740692","https://openalex.org/W4386250055","https://openalex.org/W4399620366","https://openalex.org/W4401508057","https://openalex.org/W4403017771"],"related_works":["https://openalex.org/W4391375266","https://openalex.org/W2899084033","https://openalex.org/W2748952813","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"],"abstract_inverted_index":{"In":[0],"this":[1,84],"paper,":[2],"we":[3,86,144,211],"explore":[4],"how":[5],"to":[6,10,43,68,77,94,129,216],"schedule":[7],"multiple":[8,100],"users":[9,24],"optimize":[11],"information":[12,39,48],"freshness":[13],"in":[14,115,195],"a":[15,51,58,116,137,155],"pull-based":[16],"wireless":[17],"network,":[18],"where":[19],"the":[20,32,36,45,73,78,96,104,108,141,160,166,174,179,188,198,206,221,232],"status":[21],"updates":[22],"from":[23],"are":[25,185],"requested":[26],"by":[27,72,102,168],"randomly":[28],"arriving":[29],"queries":[30],"at":[31,40],"destination.":[33],"We":[34],"use":[35],"age":[37],"of":[38,47,80,140,162,165,178,191,197,205],"query":[41,111],"(QAoI)":[42],"characterize":[44],"performance":[46],"freshness.":[49],"Such":[50],"decision-making":[52],"problem":[53],"is":[54,65,148],"naturally":[55],"modeled":[56],"as":[57],"Markov":[59],"decision":[60],"process":[61,113],"(MDP),":[62],"which,":[63],"however,":[64],"prohibitively":[66],"high":[67],"be":[69],"solved":[70],"optimally":[71],"standard":[74],"method":[75],"due":[76],"curse":[79],"dimensionality.":[81],"To":[82],"address":[83],"issue,":[85],"employ":[87],"Whittle":[88,131,163,193,218,234],"index":[89,235],"approach,":[90],"which":[91],"allows":[92],"us":[93],"decouple":[95],"original":[97],"MDP":[98],"into":[99],"sub-MDPs":[101],"relaxing":[103],"scheduling":[105,203],"constraints.":[106],"However,":[107],"binary":[109],"Markovian":[110],"arrival":[112],"results":[114,226],"bi-dimensional":[117],"state":[118,121],"and":[119,150,202,230,240],"complex":[120],"transitions":[122],"within":[123],"each":[124],"sub-MDP,":[125],"making":[126],"it":[127,147],"challenging":[128],"verify":[130],"indexability":[132,164],"using":[133],"conventional":[134],"methods.":[135],"After":[136],"thorough":[138],"analysis":[139],"sub-MDP\u2019s":[142],"structure,":[143],"show":[145,231],"that":[146],"unichain":[149],"its":[151],"optimal":[152],"policy":[153,236],"follows":[154],"threshold-type":[156,183],"structure.":[157],"This":[158],"facilitates":[159],"verification":[161],"sub-MDP":[167,180],"employing":[169],"an":[170,213],"easy-to-verify":[171],"condition.":[172],"Subsequently,":[173],"steady-state":[175],"probability":[176],"distributions":[177],"under":[181],"different":[182,192],"policies":[184,239],"analyzed,":[186],"constituting":[187],"analytical":[189],"expressions":[190],"indices":[194,219],"terms":[196],"expected":[199],"average":[200],"QAoI":[201],"time":[204],"sub-MDP.":[207],"Building":[208],"on":[209],"these,":[210],"devise":[212],"efficient":[214],"algorithm":[215],"calculate":[217],"for":[220],"formulated":[222],"sub-MDPs.":[223],"The":[224],"simulation":[225],"validate":[227],"our":[228],"analyses":[229],"proposed":[233],"outperforms":[237],"baseline":[238],"achieves":[241],"near-optimal":[242],"performance.":[243]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":1}],"updated_date":"2026-03-27T05:58:40.876381","created_date":"2025-10-10T00:00:00"}