{"id":"https://openalex.org/W2892607008","doi":"https://doi.org/10.1109/comst.2019.2949145","title":"New Radio Beam-Based Access to Unlicensed Spectrum: Design Challenges and Solutions","display_name":"New Radio Beam-Based Access to Unlicensed Spectrum: Design Challenges and Solutions","publication_year":2019,"publication_date":"2019-10-24","ids":{"openalex":"https://openalex.org/W2892607008","doi":"https://doi.org/10.1109/comst.2019.2949145","mag":"2892607008"},"language":"en","primary_location":{"id":"doi:10.1109/comst.2019.2949145","is_oa":false,"landing_page_url":"https://doi.org/10.1109/comst.2019.2949145","pdf_url":null,"source":{"id":"https://openalex.org/S23688054","display_name":"IEEE Communications Surveys & Tutorials","issn_l":"1553-877X","issn":["1553-877X","2373-745X"],"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 Communications Surveys & Tutorials","raw_type":"journal-article"},"type":"preprint","indexed_in":["arxiv","crossref","datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://arxiv.org/pdf/1809.10443","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5054976554","display_name":"Sandra Lag\u00e9n","orcid":"https://orcid.org/0000-0003-4986-5104"},"institutions":[{"id":"https://openalex.org/I4210087295","display_name":"Centre Tecnologic de Telecomunicacions de Catalunya","ror":"https://ror.org/001cwea56","country_code":"ES","type":"nonprofit","lineage":["https://openalex.org/I4210087295","https://openalex.org/I4387153040"]}],"countries":["ES"],"is_corresponding":true,"raw_author_name":"Sandra Lagen","raw_affiliation_strings":["Mobile Networks Department, Centre Tecnol\u00f2gic de Telecomunicacions de Catalunya (CTTC/CERCA), Barcelona, Spain"],"affiliations":[{"raw_affiliation_string":"Mobile Networks Department, Centre Tecnol\u00f2gic de Telecomunicacions de Catalunya (CTTC/CERCA), Barcelona, Spain","institution_ids":["https://openalex.org/I4210087295"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5046133708","display_name":"Lorenza Giupponi","orcid":"https://orcid.org/0000-0003-3321-4761"},"institutions":[{"id":"https://openalex.org/I4210087295","display_name":"Centre Tecnologic de Telecomunicacions de Catalunya","ror":"https://ror.org/001cwea56","country_code":"ES","type":"nonprofit","lineage":["https://openalex.org/I4210087295","https://openalex.org/I4387153040"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Lorenza Giupponi","raw_affiliation_strings":["Mobile Networks Department, Centre Tecnol\u00f2gic de Telecomunicacions de Catalunya (CTTC/CERCA), Barcelona, Spain"],"affiliations":[{"raw_affiliation_string":"Mobile Networks Department, Centre Tecnol\u00f2gic de Telecomunicacions de Catalunya (CTTC/CERCA), Barcelona, Spain","institution_ids":["https://openalex.org/I4210087295"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5002107960","display_name":"Sanjay Goyal","orcid":"https://orcid.org/0000-0003-4455-0007"},"institutions":[{"id":"https://openalex.org/I36326968","display_name":"InterDigital (United States)","ror":"https://ror.org/02w335z67","country_code":"US","type":"company","lineage":["https://openalex.org/I36326968"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Sanjay Goyal","raw_affiliation_strings":["Research and Innovation Labs, InterDigital Communications, Inc., Melville, USA","Research and Innovation Labs, InterDigital Communications, Inc., Melville, NY, USA"],"affiliations":[{"raw_affiliation_string":"Research and Innovation Labs, InterDigital Communications, Inc., Melville, USA","institution_ids":["https://openalex.org/I36326968"]},{"raw_affiliation_string":"Research and Innovation Labs, InterDigital Communications, Inc., Melville, NY, USA","institution_ids":["https://openalex.org/I36326968"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5031091092","display_name":"Natale Patriciello","orcid":"https://orcid.org/0000-0002-3011-4370"},"institutions":[{"id":"https://openalex.org/I4210087295","display_name":"Centre Tecnologic de Telecomunicacions de Catalunya","ror":"https://ror.org/001cwea56","country_code":"ES","type":"nonprofit","lineage":["https://openalex.org/I4210087295","https://openalex.org/I4387153040"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Natale Patriciello","raw_affiliation_strings":["Mobile Networks Department, Centre Tecnol\u00f2gic de Telecomunicacions de Catalunya (CTTC/CERCA), Barcelona, Spain"],"affiliations":[{"raw_affiliation_string":"Mobile Networks Department, Centre Tecnol\u00f2gic de Telecomunicacions de Catalunya (CTTC/CERCA), Barcelona, Spain","institution_ids":["https://openalex.org/I4210087295"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5070853876","display_name":"Biljana Bojovi\u0107","orcid":"https://orcid.org/0000-0002-7996-9652"},"institutions":[{"id":"https://openalex.org/I4210087295","display_name":"Centre Tecnologic de Telecomunicacions de Catalunya","ror":"https://ror.org/001cwea56","country_code":"ES","type":"nonprofit","lineage":["https://openalex.org/I4210087295","https://openalex.org/I4387153040"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Biljana Bojovic","raw_affiliation_strings":["Mobile Networks Department, Centre Tecnol\u00f2gic de Telecomunicacions de Catalunya (CTTC/CERCA), Barcelona, Spain"],"affiliations":[{"raw_affiliation_string":"Mobile Networks Department, Centre Tecnol\u00f2gic de Telecomunicacions de Catalunya (CTTC/CERCA), Barcelona, Spain","institution_ids":["https://openalex.org/I4210087295"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5054667885","display_name":"Alpaslan Demir","orcid":null},"institutions":[{"id":"https://openalex.org/I36326968","display_name":"InterDigital (United States)","ror":"https://ror.org/02w335z67","country_code":"US","type":"company","lineage":["https://openalex.org/I36326968"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Alpaslan Demir","raw_affiliation_strings":["Research and Innovation Labs, InterDigital Communications, Inc., Melville, USA","Research and Innovation Labs, InterDigital Communications, Inc., Melville, NY, USA"],"affiliations":[{"raw_affiliation_string":"Research and Innovation Labs, InterDigital Communications, Inc., Melville, USA","institution_ids":["https://openalex.org/I36326968"]},{"raw_affiliation_string":"Research and Innovation Labs, InterDigital Communications, Inc., Melville, NY, USA","institution_ids":["https://openalex.org/I36326968"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5055930875","display_name":"Mihaela Beluri","orcid":null},"institutions":[{"id":"https://openalex.org/I36326968","display_name":"InterDigital (United States)","ror":"https://ror.org/02w335z67","country_code":"US","type":"company","lineage":["https://openalex.org/I36326968"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Mihaela Beluri","raw_affiliation_strings":["Research and Innovation Labs, InterDigital Communications, Inc., Melville, USA","Research and Innovation Labs, InterDigital Communications, Inc., Melville, NY, USA"],"affiliations":[{"raw_affiliation_string":"Research and Innovation Labs, InterDigital Communications, Inc., Melville, USA","institution_ids":["https://openalex.org/I36326968"]},{"raw_affiliation_string":"Research and Innovation Labs, InterDigital Communications, Inc., Melville, NY, USA","institution_ids":["https://openalex.org/I36326968"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":7,"corresponding_author_ids":["https://openalex.org/A5054976554"],"corresponding_institution_ids":["https://openalex.org/I4210087295"],"apc_list":null,"apc_paid":null,"fwci":0.7235,"has_fulltext":false,"cited_by_count":8,"citation_normalized_percentile":{"value":0.70645396,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":97},"biblio":{"volume":"22","issue":"1","first_page":"8","last_page":"37"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10936","display_name":"Millimeter-Wave Propagation and Modeling","score":0.9998999834060669,"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/T10936","display_name":"Millimeter-Wave Propagation and Modeling","score":0.9998999834060669,"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/T10148","display_name":"Advanced MIMO Systems Optimization","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/T11158","display_name":"Wireless Networks and Protocols","score":0.9988999962806702,"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/spectrum-management","display_name":"Spectrum management","score":0.7909606695175171},{"id":"https://openalex.org/keywords/radio-spectrum","display_name":"Radio spectrum","score":0.6204531788825989},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.599140465259552},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.5270196199417114},{"id":"https://openalex.org/keywords/access-technology","display_name":"Access technology","score":0.5020978450775146},{"id":"https://openalex.org/keywords/extremely-high-frequency","display_name":"Extremely high frequency","score":0.4923750162124634},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.476754754781723},{"id":"https://openalex.org/keywords/transmission","display_name":"Transmission (telecommunications)","score":0.4505050480365753},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.4347050189971924},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.4147673547267914},{"id":"https://openalex.org/keywords/cognitive-radio","display_name":"Cognitive radio","score":0.3003773093223572}],"concepts":[{"id":"https://openalex.org/C63029442","wikidata":"https://www.wikidata.org/wiki/Q6504978","display_name":"Spectrum management","level":4,"score":0.7909606695175171},{"id":"https://openalex.org/C92545706","wikidata":"https://www.wikidata.org/wiki/Q902174","display_name":"Radio spectrum","level":2,"score":0.6204531788825989},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.599140465259552},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.5270196199417114},{"id":"https://openalex.org/C2983646967","wikidata":"https://www.wikidata.org/wiki/Q688498","display_name":"Access technology","level":3,"score":0.5020978450775146},{"id":"https://openalex.org/C45764600","wikidata":"https://www.wikidata.org/wiki/Q570342","display_name":"Extremely high frequency","level":2,"score":0.4923750162124634},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.476754754781723},{"id":"https://openalex.org/C761482","wikidata":"https://www.wikidata.org/wiki/Q118093","display_name":"Transmission (telecommunications)","level":2,"score":0.4505050480365753},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.4347050189971924},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.4147673547267914},{"id":"https://openalex.org/C149946192","wikidata":"https://www.wikidata.org/wiki/Q3235733","display_name":"Cognitive radio","level":3,"score":0.3003773093223572}],"mesh":[],"locations_count":6,"locations":[{"id":"doi:10.1109/comst.2019.2949145","is_oa":false,"landing_page_url":"https://doi.org/10.1109/comst.2019.2949145","pdf_url":null,"source":{"id":"https://openalex.org/S23688054","display_name":"IEEE Communications Surveys & Tutorials","issn_l":"1553-877X","issn":["1553-877X","2373-745X"],"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 Communications Surveys & Tutorials","raw_type":"journal-article"},{"id":"pmh:oai:arXiv.org:1809.10443","is_oa":true,"landing_page_url":"http://arxiv.org/abs/1809.10443","pdf_url":"https://arxiv.org/pdf/1809.10443","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},{"id":"mag:2892607008","is_oa":true,"landing_page_url":"https://arxiv.org/pdf/1809.10443","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"arXiv (Cornell University)","raw_type":null},{"id":"pmh:oai:upcommons.upc.edu:2117/352870","is_oa":true,"landing_page_url":"http://hdl.handle.net/2117/352870","pdf_url":null,"source":{"id":"https://openalex.org/S4210207057","display_name":"QRU Quaderns de Recerca en Urbanisme","issn_l":"2014-9689","issn":["2014-9689","2385-6777"],"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/P4310322448","host_organization_name":"Q71272178","host_organization_lineage":["https://openalex.org/P4310322448"],"host_organization_lineage_names":["Q71272178"],"type":"journal"},"license":"public-domain","license_id":"https://openalex.org/licenses/public-domain","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"info:eu-repo/semantics/article"},{"id":"pmh:oai:zenodo.org:3633141","is_oa":true,"landing_page_url":"https://zenodo.org/record/3633141","pdf_url":null,"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":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"IEEE Communications Surveys & Tutorials","raw_type":"info:eu-repo/semantics/article"},{"id":"doi:10.48550/arxiv.1809.10443","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.1809.10443","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":null,"raw_source_name":null,"raw_type":"article"}],"best_oa_location":{"id":"pmh:oai:arXiv.org:1809.10443","is_oa":true,"landing_page_url":"http://arxiv.org/abs/1809.10443","pdf_url":"https://arxiv.org/pdf/1809.10443","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/17","score":0.41999998688697815,"display_name":"Partnerships for the goals"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":65,"referenced_works":["https://openalex.org/W1504983838","https://openalex.org/W1564088886","https://openalex.org/W1593878501","https://openalex.org/W1980823728","https://openalex.org/W1999162236","https://openalex.org/W2074011868","https://openalex.org/W2078048287","https://openalex.org/W2095843437","https://openalex.org/W2113746883","https://openalex.org/W2118060203","https://openalex.org/W2126910086","https://openalex.org/W2127473510","https://openalex.org/W2154075755","https://openalex.org/W2257712432","https://openalex.org/W2278683827","https://openalex.org/W2292433337","https://openalex.org/W2368600038","https://openalex.org/W2402158869","https://openalex.org/W2431692668","https://openalex.org/W2493910502","https://openalex.org/W2517467946","https://openalex.org/W2554187790","https://openalex.org/W2558339498","https://openalex.org/W2569350409","https://openalex.org/W2586092644","https://openalex.org/W2606857373","https://openalex.org/W2608727628","https://openalex.org/W2612240586","https://openalex.org/W2744426689","https://openalex.org/W2766305950","https://openalex.org/W2766845249","https://openalex.org/W2771783069","https://openalex.org/W2784277076","https://openalex.org/W2784521918","https://openalex.org/W2789268877","https://openalex.org/W2789635206","https://openalex.org/W2791714000","https://openalex.org/W2796047239","https://openalex.org/W2803172649","https://openalex.org/W2813485580","https://openalex.org/W2819344492","https://openalex.org/W2887717443","https://openalex.org/W2888550303","https://openalex.org/W2895979956","https://openalex.org/W2899057481","https://openalex.org/W2899506590","https://openalex.org/W2907793396","https://openalex.org/W2916831434","https://openalex.org/W2917671078","https://openalex.org/W2918697617","https://openalex.org/W2919832605","https://openalex.org/W2941579600","https://openalex.org/W2945712931","https://openalex.org/W2953644810","https://openalex.org/W2962817841","https://openalex.org/W2963288612","https://openalex.org/W2963581947","https://openalex.org/W2963609486","https://openalex.org/W3019643481","https://openalex.org/W3098632498","https://openalex.org/W3104571779","https://openalex.org/W3105281589","https://openalex.org/W6635738907","https://openalex.org/W6717755176","https://openalex.org/W6730413993"],"related_works":["https://openalex.org/W2981665798","https://openalex.org/W3012467441","https://openalex.org/W2274672398","https://openalex.org/W2777144648","https://openalex.org/W2917671078","https://openalex.org/W2752155615","https://openalex.org/W2284495118","https://openalex.org/W3152920802","https://openalex.org/W2803678962","https://openalex.org/W2755420147","https://openalex.org/W2736499357","https://openalex.org/W2955790228","https://openalex.org/W2960560131","https://openalex.org/W3123086511","https://openalex.org/W2962681613","https://openalex.org/W2050537613","https://openalex.org/W2099912277","https://openalex.org/W2775893293","https://openalex.org/W2915176342","https://openalex.org/W185115567"],"abstract_inverted_index":{"This":[0],"paper":[1],"elaborates":[2],"on":[3],"the":[4,22,26,34,57,91,96,112,119,125,135,180],"design":[5,162],"challenges,":[6],"opportunities,":[7],"and":[8,25,79,179,195],"solutions":[9,182],"for":[10,55,147,171,209],"New":[11,39],"Radio-based":[12],"access":[13,41,88,186,191,207],"to":[14,32,43,51,81,105,111,150,165,168,184],"Unlicensed":[15],"spectrum":[16,109,137],"(NR-U)":[17],"by":[18,49,63],"taking":[19],"into":[20],"account":[21],"beam-based":[23,94,130,172],"transmissions":[24,131],"worldwide":[27],"regulatory":[28],"requirements.":[29],"NR-U":[30,97,148],"intends":[31],"expand":[33],"applicability":[35],"of":[36,66,93,114,154,203],"5th":[37],"generation":[38,68],"Radio":[40],"technology":[42],"support":[44],"operation":[45],"in":[46,73,107,134],"unlicensed":[47,74,108,136],"bands":[48],"adhering":[50],"Listen-Before-Talk":[52],"(LBT)":[53],"requirements":[54],"accessing":[56],"channel.":[58],"LBT":[59],"was":[60],"already":[61],"adopted":[62],"different":[64,86,102,177,204],"variants":[65],"4th":[67],"Long":[69],"Term":[70],"Evolution":[71],"(LTE)":[72],"spectrum,":[75],"i.e.,":[76],"Licensed-Assisted":[77],"Access":[78],"MulteFire,":[80],"guarantee":[82],"fair":[83],"coexistence":[84,98,170,213],"among":[85],"radio":[87],"technologies.":[89],"In":[90,128,174],"case":[92],"transmissions,":[95],"framework":[99],"is":[100,143,215],"significantly":[101],"as":[103],"compared":[104],"LTE":[106],"due":[110,149],"use":[113],"directional":[115],"antennas,":[116],"which":[117,142],"enhance":[118],"spatial":[120],"reuse":[121],"but":[122],"also":[123,216],"complicate":[124],"interference":[126],"management.":[127],"particular,":[129],"are":[132,198],"needed":[133],"at":[138],"millimeter-wave":[139],"(mmWave)":[140],"bands,":[141],"an":[144],"attractive":[145],"candidate":[146],"its":[151],"large":[152],"amount":[153],"allocated":[155],"spectrum.":[156],"As":[157],"a":[158],"consequence,":[159],"some":[160],"major":[161],"principles":[163],"need":[164],"be":[166],"revisited":[167],"address":[169],"NR-U.":[173],"this":[175],"paper,":[176],"problems":[178],"potential":[181],"related":[183],"channel":[185,206],"procedures,":[187,192,194],"frame":[188],"structure,":[189],"initial":[190],"re-transmission":[193],"scheduling":[196],"schemes":[197],"discussed.":[199],"A":[200],"simulation":[201],"evaluation":[202],"LBT-based":[205],"procedures":[208],"NR-U/Wi-Fi":[210],"indoor":[211],"mmWave":[212],"scenarios":[214],"provided.":[217]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":3},{"year":2019,"cited_by_count":1}],"updated_date":"2026-03-20T23:20:44.827607","created_date":"2025-10-10T00:00:00"}