{"id":"https://openalex.org/W7138199762","doi":"https://doi.org/10.1109/jiot.2026.3674729","title":"Channel-Aware Access and RACH Enhancement for Efficient LEO Satellite IoT","display_name":"Channel-Aware Access and RACH Enhancement for Efficient LEO Satellite IoT","publication_year":2026,"publication_date":"2026-03-17","ids":{"openalex":"https://openalex.org/W7138199762","doi":"https://doi.org/10.1109/jiot.2026.3674729"},"language":null,"primary_location":{"id":"doi:10.1109/jiot.2026.3674729","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jiot.2026.3674729","pdf_url":null,"source":{"id":"https://openalex.org/S2480266640","display_name":"IEEE Internet of Things Journal","issn_l":"2327-4662","issn":["2327-4662","2372-2541"],"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 Internet of Things Journal","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/A5100374346","display_name":"Yuwei Chen","orcid":"https://orcid.org/0000-0003-0148-3609"},"institutions":[{"id":"https://openalex.org/I16733864","display_name":"National Taiwan University","ror":"https://ror.org/05bqach95","country_code":"TW","type":"education","lineage":["https://openalex.org/I16733864"]}],"countries":["TW"],"is_corresponding":false,"raw_author_name":"Yu-Wei Chen","raw_affiliation_strings":["Graduate Institute of Communication Engineering (GICE), National Taiwan University (NTU), Taipei, Taiwan"],"raw_orcid":"https://orcid.org/0009-0000-5833-8782","affiliations":[{"raw_affiliation_string":"Graduate Institute of Communication Engineering (GICE), National Taiwan University (NTU), Taipei, Taiwan","institution_ids":["https://openalex.org/I16733864"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5042554332","display_name":"Kuang-Hsun Lin","orcid":"https://orcid.org/0000-0002-0426-9301"},"institutions":[{"id":"https://openalex.org/I16733864","display_name":"National Taiwan University","ror":"https://ror.org/05bqach95","country_code":"TW","type":"education","lineage":["https://openalex.org/I16733864"]}],"countries":["TW"],"is_corresponding":false,"raw_author_name":"Kuang-Hsun Lin","raw_affiliation_strings":["Graduate Institute of Communication Engineering (GICE), National Taiwan University (NTU), Taipei, Taiwan"],"raw_orcid":"https://orcid.org/0000-0002-0426-9301","affiliations":[{"raw_affiliation_string":"Graduate Institute of Communication Engineering (GICE), National Taiwan University (NTU), Taipei, Taiwan","institution_ids":["https://openalex.org/I16733864"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5045339787","display_name":"Hung\u2010Yu Wei","orcid":"https://orcid.org/0000-0002-3116-306X"},"institutions":[{"id":"https://openalex.org/I16733864","display_name":"National Taiwan University","ror":"https://ror.org/05bqach95","country_code":"TW","type":"education","lineage":["https://openalex.org/I16733864"]}],"countries":["TW"],"is_corresponding":false,"raw_author_name":"Hung-Yu Wei","raw_affiliation_strings":["Department of Electrical Engineering, Graduate Institute of Communication Engineering (GICE), National Taiwan University (NTU), Taipei, Taiwan"],"raw_orcid":"https://orcid.org/0000-0002-3116-306X","affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Graduate Institute of Communication Engineering (GICE), National Taiwan University (NTU), Taipei, Taiwan","institution_ids":["https://openalex.org/I16733864"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.34649169,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"13","issue":"11","first_page":"24806","last_page":"24822"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12079","display_name":"IoT Networks and Protocols","score":0.7644000053405762,"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"}},"topics":[{"id":"https://openalex.org/T12079","display_name":"IoT Networks and Protocols","score":0.7644000053405762,"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/T12042","display_name":"Satellite Communication Systems","score":0.147599995136261,"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"}},{"id":"https://openalex.org/T13553","display_name":"Age of Information Optimization","score":0.00930000003427267,"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/satellite","display_name":"Satellite","score":0.541700005531311},{"id":"https://openalex.org/keywords/internet-of-things","display_name":"Internet of Things","score":0.4657000005245209},{"id":"https://openalex.org/keywords/satellite-broadcasting","display_name":"Satellite broadcasting","score":0.4537000060081482},{"id":"https://openalex.org/keywords/communications-satellite","display_name":"Communications satellite","score":0.35670000314712524},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.2816999852657318}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8176000118255615},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.570900022983551},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.541700005531311},{"id":"https://openalex.org/C81860439","wikidata":"https://www.wikidata.org/wiki/Q251212","display_name":"Internet of Things","level":2,"score":0.4657000005245209},{"id":"https://openalex.org/C2986254709","wikidata":"https://www.wikidata.org/wiki/Q209588","display_name":"Satellite broadcasting","level":3,"score":0.4537000060081482},{"id":"https://openalex.org/C121308736","wikidata":"https://www.wikidata.org/wiki/Q149918","display_name":"Communications satellite","level":3,"score":0.35670000314712524},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.2816999852657318},{"id":"https://openalex.org/C3018325918","wikidata":"https://www.wikidata.org/wiki/Q663611","display_name":"Low earth orbit","level":3,"score":0.2766000032424927},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.27160000801086426},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.2703999876976013},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.2694999873638153},{"id":"https://openalex.org/C106516650","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm design","level":2,"score":0.2558000087738037}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/jiot.2026.3674729","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jiot.2026.3674729","pdf_url":null,"source":{"id":"https://openalex.org/S2480266640","display_name":"IEEE Internet of Things Journal","issn_l":"2327-4662","issn":["2327-4662","2372-2541"],"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 Internet of Things Journal","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G8357989272","display_name":null,"funder_award_id":"NAT-435534","funder_id":"https://openalex.org/F4320308258","funder_display_name":"Qualcomm"}],"funders":[{"id":"https://openalex.org/F4320308258","display_name":"Qualcomm","ror":"https://ror.org/002zrf773"},{"id":"https://openalex.org/F4320331164","display_name":"National Science and Technology Council","ror":"https://ror.org/00wnb9798"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":[],"abstract_inverted_index":{"Low":[0],"Earth":[1],"Orbit":[2],"(LEO)":[3],"satellite":[4,50,77],"communication":[5],"is":[6],"critical":[7,55],"for":[8,15,32,38],"widespread":[9],"Internet":[10],"of":[11,49,75,159],"Things":[12],"(IoT),":[13],"especially":[14],"small":[16],"data":[17],"transmissions.":[18],"Conventional":[19],"Access":[20,26,92],"Class":[21],"Barring":[22],"(ACB)":[23],"and":[24,60,83,118],"Random":[25,91],"Procedure":[27],"(RAP)":[28],"schemes,":[29],"originally":[30],"designed":[31],"stochastic":[33],"terrestrial":[34],"channels,":[35,78],"are":[36],"ill-suited":[37],"LEO":[39,76],"networks":[40,148],"as":[41],"they":[42],"fail":[43],"to":[44,96],"exploit":[45],"the":[46,72,138,157],"deterministic":[47],"nature":[48],"trajectories.":[51],"To":[52],"address":[53],"this":[54],"gap,":[56],"we":[57,108],"propose":[58],"Channel":[59,93],"Timing-Predicted":[61],"(CTP)":[62],"ACB":[63,112,126],"that":[64,110],"dynamically":[65],"prioritizes":[66],"User":[67],"Equipment":[68],"(UEs)":[69],"by":[70,141,149],"exploiting":[71],"high":[73],"predictability":[74],"thereby":[79],"optimizing":[80],"resource":[81,116],"allocation":[82],"improving":[84],"energy":[85,119],"efficiency.":[86,120],"We":[87],"introduce":[88],"an":[89],"optimized":[90],"(RACH)":[94],"period":[95],"balance":[97],"system":[98],"throughput":[99],"with":[100],"individual":[101],"UE":[102],"service":[103],"rates.":[104],"Through":[105],"comprehensive":[106],"simulations,":[107],"demonstrate":[109],"CTP":[111,125],"substantially":[113],"improves":[114],"throughput,":[115],"utilization,":[117],"Regarding":[121],"information":[122],"freshness,":[123],"while":[124],"introduces":[127],"a":[128],"marginal":[129],"scheduling":[130],"delay":[131],"in":[132,144,162],"low-density":[133],"scenarios,":[134],"it":[135],"significantly":[136],"reduces":[137],"mean":[139],"AoI":[140],"approximately":[142],"30%":[143],"high-density":[145],"massive":[146],"IoT":[147],"effectively":[150],"mitigating":[151],"access":[152],"congestion.":[153],"These":[154],"findings":[155],"highlight":[156],"necessity":[158],"trajectory-aware":[160],"designs":[161],"next-generation":[163],"NTN-IoT":[164],"standards.":[165]},"counts_by_year":[],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2026-03-18T00:00:00"}
