{"id":"https://openalex.org/W3211148218","doi":"https://doi.org/10.1109/pimrc50174.2021.9569640","title":"Semi-Grant-Free Non-Orthogonal Multiple Access for Tactile Internet of Things","display_name":"Semi-Grant-Free Non-Orthogonal Multiple Access for Tactile Internet of Things","publication_year":2021,"publication_date":"2021-09-13","ids":{"openalex":"https://openalex.org/W3211148218","doi":"https://doi.org/10.1109/pimrc50174.2021.9569640","mag":"3211148218"},"language":"en","primary_location":{"id":"doi:10.1109/pimrc50174.2021.9569640","is_oa":false,"landing_page_url":"https://doi.org/10.1109/pimrc50174.2021.9569640","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://zenodo.org/record/6783009","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5001866035","display_name":"Dimitrios Pliatsios","orcid":"https://orcid.org/0000-0002-7042-7902"},"institutions":[{"id":"https://openalex.org/I89506807","display_name":"University of Western Macedonia","ror":"https://ror.org/00a5pe906","country_code":"GR","type":"education","lineage":["https://openalex.org/I89506807"]}],"countries":["GR"],"is_corresponding":true,"raw_author_name":"Dimitrios Pliatsios","raw_affiliation_strings":["Department of Electrical and Computer Engineering, University of Western Macedonia, Kozani, Greece"],"affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Western Macedonia, Kozani, Greece","institution_ids":["https://openalex.org/I89506807"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5083860419","display_name":"Alexandros\u2013Apostolos A. Boulogeorgos","orcid":"https://orcid.org/0000-0001-8345-0872"},"institutions":[{"id":"https://openalex.org/I154757721","display_name":"University of Piraeus","ror":"https://ror.org/02qs84g94","country_code":"GR","type":"education","lineage":["https://openalex.org/I154757721"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"Alexandros-Apostolos A. Boulogeorgos","raw_affiliation_strings":["Department of Digital Systems, University of Piraeus, Piraeus, Greece"],"affiliations":[{"raw_affiliation_string":"Department of Digital Systems, University of Piraeus, Piraeus, Greece","institution_ids":["https://openalex.org/I154757721"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5066475089","display_name":"\u0398\u03c9\u03bc\u03ac\u03c2 \u039b\u03ac\u03b3\u03ba\u03b1\u03c2","orcid":"https://orcid.org/0000-0002-0749-9794"},"institutions":[{"id":"https://openalex.org/I183898223","display_name":"International Hellenic University","ror":"https://ror.org/00708jp83","country_code":"GR","type":"education","lineage":["https://openalex.org/I183898223"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"Thomas Lagkas","raw_affiliation_strings":["Department of Computer Science, International Hellenic University, Greece"],"affiliations":[{"raw_affiliation_string":"Department of Computer Science, International Hellenic University, Greece","institution_ids":["https://openalex.org/I183898223"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5013565466","display_name":"Vasileios Argyriou","orcid":"https://orcid.org/0000-0003-4679-8049"},"institutions":[{"id":"https://openalex.org/I205051169","display_name":"Kingston University","ror":"https://ror.org/05bbqza97","country_code":"GB","type":"education","lineage":["https://openalex.org/I205051169"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Vasileios Argyriou","raw_affiliation_strings":["Kingston University London, SEC, London, United Kingdom"],"affiliations":[{"raw_affiliation_string":"Kingston University London, SEC, London, United Kingdom","institution_ids":["https://openalex.org/I205051169"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5040071039","display_name":"Ioannis D. Moscholios","orcid":"https://orcid.org/0000-0003-3656-277X"},"institutions":[{"id":"https://openalex.org/I158716096","display_name":"University of Peloponnese","ror":"https://ror.org/04d4d3c02","country_code":"GR","type":"education","lineage":["https://openalex.org/I158716096"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"Ioannis D. Moscholios","raw_affiliation_strings":["Department Informatics & Telecommunications, University of Peloponnese, Tripolis, Greece"],"affiliations":[{"raw_affiliation_string":"Department Informatics & Telecommunications, University of Peloponnese, Tripolis, Greece","institution_ids":["https://openalex.org/I158716096"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5050756789","display_name":"Panagiotis Sarigiannidis","orcid":"https://orcid.org/0000-0001-6042-0355"},"institutions":[{"id":"https://openalex.org/I89506807","display_name":"University of Western Macedonia","ror":"https://ror.org/00a5pe906","country_code":"GR","type":"education","lineage":["https://openalex.org/I89506807"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"Panagiotis Sarigiannidis","raw_affiliation_strings":["Department of Electrical and Computer Engineering, University of Western Macedonia, Kozani, Greece"],"affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Western Macedonia, Kozani, Greece","institution_ids":["https://openalex.org/I89506807"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":6,"corresponding_author_ids":["https://openalex.org/A5001866035"],"corresponding_institution_ids":["https://openalex.org/I89506807"],"apc_list":null,"apc_paid":null,"fwci":1.2193,"has_fulltext":true,"cited_by_count":14,"citation_normalized_percentile":{"value":0.7919922,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":null,"issue":null,"first_page":"1389","last_page":"1394"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11458","display_name":"Advanced Wireless Communication Technologies","score":0.9998000264167786,"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/T11458","display_name":"Advanced Wireless Communication Technologies","score":0.9998000264167786,"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/T10851","display_name":"Optical Wireless Communication Technologies","score":0.9995999932289124,"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/T10326","display_name":"Indoor and Outdoor Localization Technologies","score":0.9983000159263611,"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":0.6266542077064514},{"id":"https://openalex.org/keywords/internet-of-things","display_name":"Internet of Things","score":0.6222243905067444},{"id":"https://openalex.org/keywords/free-access","display_name":"Free access","score":0.4432523250579834},{"id":"https://openalex.org/keywords/internet-privacy","display_name":"Internet privacy","score":0.3709552586078644},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.22986376285552979}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6266542077064514},{"id":"https://openalex.org/C81860439","wikidata":"https://www.wikidata.org/wiki/Q251212","display_name":"Internet of Things","level":2,"score":0.6222243905067444},{"id":"https://openalex.org/C3020366717","wikidata":"https://www.wikidata.org/wiki/Q14075","display_name":"Free access","level":2,"score":0.4432523250579834},{"id":"https://openalex.org/C108827166","wikidata":"https://www.wikidata.org/wiki/Q175975","display_name":"Internet privacy","level":1,"score":0.3709552586078644},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.22986376285552979}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1109/pimrc50174.2021.9569640","is_oa":false,"landing_page_url":"https://doi.org/10.1109/pimrc50174.2021.9569640","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","raw_type":"proceedings-article"},{"id":"pmh:oai:eprints.kingston.ac.uk:50594","is_oa":false,"landing_page_url":null,"pdf_url":null,"source":{"id":"https://openalex.org/S4306400991","display_name":"Research Repository (Kingston University London)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I2801636071","host_organization_name":"Kingston Hospital NHS Trust","host_organization_lineage":["https://openalex.org/I2801636071"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"acceptedVersion","is_accepted":true,"is_published":false,"raw_source_name":null,"raw_type":"NonPeerReviewed"},{"id":"pmh:oai:zenodo.org:6783009","is_oa":true,"landing_page_url":"https://zenodo.org/record/6783009","pdf_url":"https://zenodo.org/record/6783009","source":{"id":"https://openalex.org/S4306400562","display_name":"Zenodo (CERN European Organization for Nuclear Research)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I67311998","host_organization_name":"European Organization for Nuclear Research","host_organization_lineage":["https://openalex.org/I67311998"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"info:eu-repo/semantics/conferencePaper"}],"best_oa_location":{"id":"pmh:oai:zenodo.org:6783009","is_oa":true,"landing_page_url":"https://zenodo.org/record/6783009","pdf_url":"https://zenodo.org/record/6783009","source":{"id":"https://openalex.org/S4306400562","display_name":"Zenodo (CERN European Organization for Nuclear Research)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I67311998","host_organization_name":"European Organization for Nuclear Research","host_organization_lineage":["https://openalex.org/I67311998"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"info:eu-repo/semantics/conferencePaper"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G2499679744","display_name":null,"funder_award_id":"MIS-5000432","funder_id":"https://openalex.org/F4320338080","funder_display_name":"European Social Fund"},{"id":"https://openalex.org/G3288996226","display_name":null,"funder_award_id":"957406","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"},{"id":"https://openalex.org/G3420432594","display_name":null,"funder_award_id":"MIS-5000432","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"},{"id":"https://openalex.org/G3998201246","display_name":null,"funder_award_id":"Social","funder_id":"https://openalex.org/F4320338080","funder_display_name":"European Social Fund"},{"id":"https://openalex.org/G4956428346","display_name":null,"funder_award_id":"Horizon 2020 research and innovatio","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"},{"id":"https://openalex.org/G5036817778","display_name":null,"funder_award_id":"European Union's Horizon 2020 research and innov","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"},{"id":"https://openalex.org/G5230420594","display_name":null,"funder_award_id":"MIS-5000432","funder_id":"https://openalex.org/F4320321916","funder_display_name":"State Scholarships Foundation"},{"id":"https://openalex.org/G5374134968","display_name":null,"funder_award_id":"European Social Fund","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"},{"id":"https://openalex.org/G7182338872","display_name":null,"funder_award_id":"5000432","funder_id":"https://openalex.org/F4320321916","funder_display_name":"State Scholarships Foundation"},{"id":"https://openalex.org/G8318064016","display_name":null,"funder_award_id":"Horizon","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"},{"id":"https://openalex.org/G8557630580","display_name":null,"funder_award_id":"co-financed","funder_id":"https://openalex.org/F4320338080","funder_display_name":"European Social Fund"},{"id":"https://openalex.org/G8633428685","display_name":null,"funder_award_id":"European Union's Horizon 2020 research and innovat","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"},{"id":"https://openalex.org/G8932275819","display_name":null,"funder_award_id":"957406 (TERMINET)","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"}],"funders":[{"id":"https://openalex.org/F4320320300","display_name":"European Commission","ror":"https://ror.org/00k4n6c32"},{"id":"https://openalex.org/F4320321916","display_name":"State Scholarships Foundation","ror":"https://ror.org/023z3dm33"},{"id":"https://openalex.org/F4320338080","display_name":"European Social Fund","ror":"https://ror.org/00k4n6c32"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W3211148218.pdf","grobid_xml":"https://content.openalex.org/works/W3211148218.grobid-xml"},"referenced_works_count":27,"referenced_works":["https://openalex.org/W2015263936","https://openalex.org/W2550599351","https://openalex.org/W2595769576","https://openalex.org/W2741385360","https://openalex.org/W2778443802","https://openalex.org/W2792046898","https://openalex.org/W2805888251","https://openalex.org/W2890017719","https://openalex.org/W2900584518","https://openalex.org/W2962951858","https://openalex.org/W2981959312","https://openalex.org/W2982575424","https://openalex.org/W3001915958","https://openalex.org/W3005885362","https://openalex.org/W3009698837","https://openalex.org/W3010185962","https://openalex.org/W3011650076","https://openalex.org/W3027993135","https://openalex.org/W3037569421","https://openalex.org/W3041672482","https://openalex.org/W3042206778","https://openalex.org/W3042527581","https://openalex.org/W3085955789","https://openalex.org/W4211092921","https://openalex.org/W4250589301","https://openalex.org/W6729435661","https://openalex.org/W6772543703"],"related_works":["https://openalex.org/W4391375266","https://openalex.org/W2899084033","https://openalex.org/W2748952813","https://openalex.org/W4245926026","https://openalex.org/W4311097251","https://openalex.org/W2586548817","https://openalex.org/W2390279801","https://openalex.org/W2625093826","https://openalex.org/W4391913857","https://openalex.org/W2358668433"],"abstract_inverted_index":{"Ultra-low":[0],"latency":[1,43],"connections":[2],"for":[3,58],"a":[4,27,50,106,147],"massive":[5],"number":[6],"of":[7,11,15,34,79,93,121,159],"devices":[8],"are":[9],"one":[10],"the":[12,16,32,73,90,94,111,119,136,141,155],"main":[13],"requirements":[14,158],"next-generation":[17],"tactile":[18],"Internet-of-Things":[19],"(TIoT).":[20],"Grant-free":[21],"non-orthogonal":[22,38],"multiple":[23],"access":[24,36,63],"(GF-NOMA)":[25],"is":[26,77,101],"novel":[28],"paradigm":[29],"that":[30,99,135],"leverages":[31],"advantages":[33],"grant-free":[35,69],"and":[37,54,68,76,114,145,162],"transmissions,":[39],"to":[40,64],"deliver":[41],"ultra-low":[42],"connectivity.":[44],"In":[45,85],"this":[46,86],"work,":[47],"we":[48,88,104,124],"present":[49],"joint":[51],"channel":[52],"assignment":[53],"power":[55],"allocation":[56],"solution":[57,107,138],"semi-GF-NOMA":[59],"systems,":[60],"which":[61],"provides":[62],"both":[65,160],"grant-based":[66],"(GB)":[67],"(GF)":[70],"devices,":[71],"maximizes":[72],"network":[74],"throughput,":[75],"capable":[78],"ensuring":[80],"each":[81],"device\u2019s":[82],"throughput":[83,144,157],"requirements.":[84],"direction,":[87],"provide":[89],"mathematical":[91],"formulation":[92],"aforementioned":[95],"problem.":[96],"After":[97],"explaining":[98],"it":[100],"not":[102],"convex,":[103],"propose":[105],"strategy":[108],"based":[109],"on":[110],"Lagrange":[112],"multipliers":[113],"subgradient":[115],"method.":[116],"To":[117],"evaluate":[118],"performance":[120],"our":[122],"solution,":[123],"carry":[125],"out":[126],"system-level":[127],"Monte":[128],"Carlo":[129],"simulations.":[130],"The":[131],"simulation":[132],"results":[133],"indicate":[134],"proposed":[137],"can":[139],"optimize":[140],"total":[142],"system":[143],"achieve":[146],"high":[148],"association":[149],"rate,":[150],"while":[151],"taking":[152],"into":[153],"account":[154],"minimum":[156],"GB":[161],"GF":[163],"devices.":[164]},"counts_by_year":[{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":5},{"year":2022,"cited_by_count":4},{"year":2021,"cited_by_count":1}],"updated_date":"2026-04-14T08:04:32.555800","created_date":"2025-10-10T00:00:00"}
