{"id":"https://openalex.org/W4285114087","doi":"https://doi.org/10.1109/tvt.2022.3189024","title":"Trajectory Optimization and Phase-Shift Design in IRS-Assisted UAV Network for Smart Railway","display_name":"Trajectory Optimization and Phase-Shift Design in IRS-Assisted UAV Network for Smart Railway","publication_year":2022,"publication_date":"2022-07-07","ids":{"openalex":"https://openalex.org/W4285114087","doi":"https://doi.org/10.1109/tvt.2022.3189024"},"language":"en","primary_location":{"id":"doi:10.1109/tvt.2022.3189024","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tvt.2022.3189024","pdf_url":null,"source":{"id":"https://openalex.org/S10936095","display_name":"IEEE Transactions on Vehicular Technology","issn_l":"0018-9545","issn":["0018-9545","1939-9359"],"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 Transactions on Vehicular Technology","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/A5080491022","display_name":"Yu Min Park","orcid":"https://orcid.org/0000-0001-8836-4500"},"institutions":[{"id":"https://openalex.org/I35928602","display_name":"Kyung Hee University","ror":"https://ror.org/01zqcg218","country_code":"KR","type":"education","lineage":["https://openalex.org/I35928602"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Yu Min Park","raw_affiliation_strings":["Department of Computer Science and Engineering, Kyung Hee University, Yongin-si, Gyeonggi-do, Republic of Korea"],"raw_orcid":"https://orcid.org/0000-0001-8836-4500","affiliations":[{"raw_affiliation_string":"Department of Computer Science and Engineering, Kyung Hee University, Yongin-si, Gyeonggi-do, Republic of Korea","institution_ids":["https://openalex.org/I35928602"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5090437841","display_name":"Yan Kyaw Tun","orcid":"https://orcid.org/0000-0002-8557-0082"},"institutions":[{"id":"https://openalex.org/I35928602","display_name":"Kyung Hee University","ror":"https://ror.org/01zqcg218","country_code":"KR","type":"education","lineage":["https://openalex.org/I35928602"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Yan Kyaw Tun","raw_affiliation_strings":["Department of Computer Science and Engineering, Kyung Hee University, Yongin-si, Gyeonggi-do, Republic of Korea"],"raw_orcid":"https://orcid.org/0000-0002-8557-0082","affiliations":[{"raw_affiliation_string":"Department of Computer Science and Engineering, Kyung Hee University, Yongin-si, Gyeonggi-do, Republic of Korea","institution_ids":["https://openalex.org/I35928602"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5063667378","display_name":"Zhu Han","orcid":"https://orcid.org/0000-0002-6606-5822"},"institutions":[{"id":"https://openalex.org/I35928602","display_name":"Kyung Hee University","ror":"https://ror.org/01zqcg218","country_code":"KR","type":"education","lineage":["https://openalex.org/I35928602"]},{"id":"https://openalex.org/I44461941","display_name":"University of Houston","ror":"https://ror.org/048sx0r50","country_code":"US","type":"education","lineage":["https://openalex.org/I44461941"]}],"countries":["KR","US"],"is_corresponding":false,"raw_author_name":"Zhu Han","raw_affiliation_strings":["Department of Electrical and Computer Engineering, University of Houston, Houston, TX, USA","Department of Computer Science and Engineering, Kyung Hee University, Seoul, South Korea"],"raw_orcid":"https://orcid.org/0000-0002-6606-5822","affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Houston, Houston, TX, USA","institution_ids":["https://openalex.org/I44461941"]},{"raw_affiliation_string":"Department of Computer Science and Engineering, Kyung Hee University, Seoul, South Korea","institution_ids":["https://openalex.org/I35928602"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5034052371","display_name":"Choong Seon Hong","orcid":"https://orcid.org/0000-0003-3484-7333"},"institutions":[{"id":"https://openalex.org/I35928602","display_name":"Kyung Hee University","ror":"https://ror.org/01zqcg218","country_code":"KR","type":"education","lineage":["https://openalex.org/I35928602"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Choong Seon Hong","raw_affiliation_strings":["Department of Computer Science and Engineering, Kyung Hee University, Yongin-si, Gyeonggi-do, Republic of Korea"],"raw_orcid":"https://orcid.org/0000-0003-3484-7333","affiliations":[{"raw_affiliation_string":"Department of Computer Science and Engineering, Kyung Hee University, Yongin-si, Gyeonggi-do, Republic of Korea","institution_ids":["https://openalex.org/I35928602"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":2.3839,"has_fulltext":false,"cited_by_count":27,"citation_normalized_percentile":{"value":0.88939859,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":97,"max":99},"biblio":{"volume":"71","issue":"10","first_page":"11317","last_page":"11321"},"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/T11133","display_name":"UAV Applications and Optimization","score":0.9908999800682068,"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/T11328","display_name":"Ocular Oncology and Treatments","score":0.9621999859809875,"subfield":{"id":"https://openalex.org/subfields/2731","display_name":"Ophthalmology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/train","display_name":"Train","score":0.75290447473526},{"id":"https://openalex.org/keywords/optimization-problem","display_name":"Optimization problem","score":0.6288306713104248},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6075774431228638},{"id":"https://openalex.org/keywords/trajectory-optimization","display_name":"Trajectory optimization","score":0.594312846660614},{"id":"https://openalex.org/keywords/trajectory","display_name":"Trajectory","score":0.5602331161499023},{"id":"https://openalex.org/keywords/linear-programming","display_name":"Linear programming","score":0.5435166358947754},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.533476710319519},{"id":"https://openalex.org/keywords/convex-optimization","display_name":"Convex optimization","score":0.5022974014282227},{"id":"https://openalex.org/keywords/integer-programming","display_name":"Integer programming","score":0.4896834194660187},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.4043705463409424},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.37220609188079834},{"id":"https://openalex.org/keywords/regular-polygon","display_name":"Regular polygon","score":0.21068096160888672},{"id":"https://openalex.org/keywords/optimal-control","display_name":"Optimal control","score":0.1944946050643921},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.1379374861717224},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.11872661113739014},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.10042175650596619}],"concepts":[{"id":"https://openalex.org/C190839683","wikidata":"https://www.wikidata.org/wiki/Q2448197","display_name":"Train","level":2,"score":0.75290447473526},{"id":"https://openalex.org/C137836250","wikidata":"https://www.wikidata.org/wiki/Q984063","display_name":"Optimization problem","level":2,"score":0.6288306713104248},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6075774431228638},{"id":"https://openalex.org/C173246807","wikidata":"https://www.wikidata.org/wiki/Q7833062","display_name":"Trajectory optimization","level":3,"score":0.594312846660614},{"id":"https://openalex.org/C13662910","wikidata":"https://www.wikidata.org/wiki/Q193139","display_name":"Trajectory","level":2,"score":0.5602331161499023},{"id":"https://openalex.org/C41045048","wikidata":"https://www.wikidata.org/wiki/Q202843","display_name":"Linear programming","level":2,"score":0.5435166358947754},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.533476710319519},{"id":"https://openalex.org/C157972887","wikidata":"https://www.wikidata.org/wiki/Q463359","display_name":"Convex optimization","level":3,"score":0.5022974014282227},{"id":"https://openalex.org/C56086750","wikidata":"https://www.wikidata.org/wiki/Q6042592","display_name":"Integer programming","level":2,"score":0.4896834194660187},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.4043705463409424},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.37220609188079834},{"id":"https://openalex.org/C112680207","wikidata":"https://www.wikidata.org/wiki/Q714886","display_name":"Regular polygon","level":2,"score":0.21068096160888672},{"id":"https://openalex.org/C91575142","wikidata":"https://www.wikidata.org/wiki/Q1971426","display_name":"Optimal control","level":2,"score":0.1944946050643921},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.1379374861717224},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.11872661113739014},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.10042175650596619},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.0},{"id":"https://openalex.org/C58640448","wikidata":"https://www.wikidata.org/wiki/Q42515","display_name":"Cartography","level":1,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/tvt.2022.3189024","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tvt.2022.3189024","pdf_url":null,"source":{"id":"https://openalex.org/S10936095","display_name":"IEEE Transactions on Vehicular Technology","issn_l":"0018-9545","issn":["0018-9545","1939-9359"],"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 Transactions on Vehicular Technology","raw_type":"journal-article"},{"id":"pmh:oai:pure.atira.dk:publications/d69df1a4-2dda-4561-895d-d16d45d8d750","is_oa":false,"landing_page_url":"http://www.scopus.com/inward/record.url?scp=85134197710&partnerID=8YFLogxK","pdf_url":null,"source":{"id":"https://openalex.org/S4306401731","display_name":"VBN Forskningsportal (Aalborg Universitet)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I891191580","host_organization_name":"Aalborg University","host_organization_lineage":["https://openalex.org/I891191580"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Park , Y M , Tun , Y K , Han , Z &amp; Hong , C S 2022 , ' Trajectory Optimization and Phase-Shift Design in IRS-Assisted UAV Network for Smart Railway ' , IEEE Transactions on Vehicular Technology , vol. 71 , no. 10 , pp. 11317-11321 . https://doi.org/10.1109/TVT.2022.3189024","raw_type":"article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320322120","display_name":"National Research Foundation of Korea","ror":"https://ror.org/013aysd81"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":17,"referenced_works":["https://openalex.org/W2284770305","https://openalex.org/W2882995207","https://openalex.org/W2984937369","https://openalex.org/W2995554704","https://openalex.org/W3000577820","https://openalex.org/W3019497660","https://openalex.org/W3029554135","https://openalex.org/W3037231455","https://openalex.org/W3042544305","https://openalex.org/W3089190064","https://openalex.org/W3104300639","https://openalex.org/W3127940641","https://openalex.org/W3129486236","https://openalex.org/W3130381884","https://openalex.org/W3167603521","https://openalex.org/W6695586988","https://openalex.org/W6747473740"],"related_works":["https://openalex.org/W618248309","https://openalex.org/W2377336366","https://openalex.org/W1568097102","https://openalex.org/W4285278887","https://openalex.org/W2365237642","https://openalex.org/W2995925505","https://openalex.org/W3116484972","https://openalex.org/W2941986668","https://openalex.org/W4232431455","https://openalex.org/W2997189060"],"abstract_inverted_index":{"The":[0],"recent":[1],"trend":[2],"towards":[3],"the":[4,10,13,24,34,67,74,78,83,92,97,103,107,155],"smart":[5,14,68],"transportation":[6],"system":[7],"has":[8],"spurred":[9],"development":[11],"of":[12,36,38,63,87,94,99,106,157],"railway.":[15],"However,":[16],"enabling":[17],"trains":[18,88],"with":[19],"seamless":[20],"wireless":[21],"connectivity":[22],"using":[23],"roadside":[25],"units":[26],"(RSUs)":[27],"is":[28,80,111],"extremely":[29],"challenging,":[30],"mostly":[31],"due":[32],"to":[33,60,66,81,102,140,153],"lack":[35],"line":[37,62],"sight":[39,64],"link.":[40],"To":[41],"address":[42],"this":[43],"issue,":[44],"we":[45,72],"propose":[46],"a":[47,125,132],"novel":[48],"framework":[49],"that":[50],"uses":[51],"intelligent":[52],"reflecting":[53],"surfaces":[54],"(IRS)-enabled":[55],"unmanned":[56],"aerial":[57],"vehicle":[58],"(UAV)":[59],"provide":[61],"communication":[65],"railway":[69],"system.":[70],"First,":[71],"formulate":[73],"optimization":[75,122],"problem":[76,118],"where":[77],"objective":[79],"maximize":[82],"minimum":[84],"achievable":[85],"rate":[86],"by":[89],"jointly":[90],"optimizing":[91],"trajectory":[93,121],"UAV":[95,120],"and":[96,119,131],"phase-shift":[98,117],"IRS.":[100],"Due":[101],"non-convex":[104],"nature":[105],"formulated":[108],"problem,":[109],"it":[110],"decomposed":[112,143],"into":[113],"two":[114],"subproblems:":[115],"IRS":[116],"problem.":[123],"Next,":[124],"Binary":[126],"Integer":[127],"Linear":[128],"Programming":[129],"(BILP)":[130],"Soft":[133],"Actor-Critic":[134],"(SAC)":[135],"are":[136,149],"constructed":[137],"in":[138,151],"order":[139,152],"solve":[141],"our":[142,158],"problems.":[144],"Finally,":[145],"comprehensive":[146],"numerical":[147],"results":[148],"provided":[150],"show":[154],"effectiveness":[156],"proposed":[159],"framework.":[160]},"counts_by_year":[{"year":2025,"cited_by_count":5},{"year":2024,"cited_by_count":10},{"year":2023,"cited_by_count":4},{"year":2022,"cited_by_count":8}],"updated_date":"2026-07-08T08:33:18.762332","created_date":"2022-07-14T00:00:00"}
