{"id":"https://openalex.org/W4315630157","doi":"https://doi.org/10.1109/globecom48099.2022.10001422","title":"Joint Computation Offloading, UAV Trajectory, User Scheduling, and Resource Allocation in SAGIN","display_name":"Joint Computation Offloading, UAV Trajectory, User Scheduling, and Resource Allocation in SAGIN","publication_year":2022,"publication_date":"2022-12-04","ids":{"openalex":"https://openalex.org/W4315630157","doi":"https://doi.org/10.1109/globecom48099.2022.10001422"},"language":"en","primary_location":{"id":"doi:10.1109/globecom48099.2022.10001422","is_oa":false,"landing_page_url":"https://doi.org/10.1109/globecom48099.2022.10001422","pdf_url":null,"source":{"id":"https://openalex.org/S4363607705","display_name":"GLOBECOM 2022 - 2022 IEEE Global Communications Conference","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"GLOBECOM 2022 - 2022 IEEE Global Communications Conference","raw_type":"proceedings-article"},"type":"conference-paper","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/A5101409205","display_name":"Minh Dat Nguyen","orcid":"https://orcid.org/0000-0002-0898-0029"},"institutions":[{"id":"https://openalex.org/I39481719","display_name":"Institut National de la Recherche Scientifique","ror":"https://ror.org/04td37d32","country_code":"CA","type":"education","lineage":["https://openalex.org/I39481719","https://openalex.org/I49663120"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Minh Dat Nguyen","raw_affiliation_strings":["INRS-EMT, University of Québec,Montréal,QC,Canada,H5A 1K6"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"INRS-EMT, University of Québec,Montréal,QC,Canada,H5A 1K6","institution_ids":["https://openalex.org/I39481719"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5029986211","display_name":"Long Bao Le","orcid":"https://orcid.org/0000-0003-3577-6530"},"institutions":[{"id":"https://openalex.org/I39481719","display_name":"Institut National de la Recherche Scientifique","ror":"https://ror.org/04td37d32","country_code":"CA","type":"education","lineage":["https://openalex.org/I39481719","https://openalex.org/I49663120"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Long Bao Le","raw_affiliation_strings":["INRS-EMT, University of Québec,Montréal,QC,Canada,H5A 1K6"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"INRS-EMT, University of Québec,Montréal,QC,Canada,H5A 1K6","institution_ids":["https://openalex.org/I39481719"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5066416967","display_name":"Andre Girard","orcid":null},"institutions":[{"id":"https://openalex.org/I39481719","display_name":"Institut National de la Recherche Scientifique","ror":"https://ror.org/04td37d32","country_code":"CA","type":"education","lineage":["https://openalex.org/I39481719","https://openalex.org/I49663120"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Andre Girard","raw_affiliation_strings":["INRS-EMT, University of Québec,Montréal,QC,Canada,H5A 1K6"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"INRS-EMT, University of Québec,Montréal,QC,Canada,H5A 1K6","institution_ids":["https://openalex.org/I39481719"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I39481719"],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":17,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"5099","last_page":"5104"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12042","display_name":"Satellite Communication Systems","score":0.9995999932289124,"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"}},"topics":[{"id":"https://openalex.org/T12042","display_name":"Satellite Communication Systems","score":0.9995999932289124,"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/T11133","display_name":"UAV Applications and Optimization","score":0.9994999766349792,"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/T11458","display_name":"Advanced Wireless Communication Technologies","score":0.9868000149726868,"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":0.7636104822158813},{"id":"https://openalex.org/keywords/computation-offloading","display_name":"Computation offloading","score":0.6538589596748352},{"id":"https://openalex.org/keywords/trajectory-optimization","display_name":"Trajectory optimization","score":0.6338176131248474},{"id":"https://openalex.org/keywords/scheduling","display_name":"Scheduling (production processes)","score":0.6317012310028076},{"id":"https://openalex.org/keywords/computation","display_name":"Computation","score":0.60462486743927},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.5622541904449463},{"id":"https://openalex.org/keywords/optimization-problem","display_name":"Optimization problem","score":0.5098451972007751},{"id":"https://openalex.org/keywords/convex-optimization","display_name":"Convex optimization","score":0.5048083066940308},{"id":"https://openalex.org/keywords/resource-allocation","display_name":"Resource allocation","score":0.49063435196876526},{"id":"https://openalex.org/keywords/bandwidth-allocation","display_name":"Bandwidth allocation","score":0.4353242814540863},{"id":"https://openalex.org/keywords/server","display_name":"Server","score":0.432012140750885},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.3453913629055023},{"id":"https://openalex.org/keywords/bandwidth","display_name":"Bandwidth (computing)","score":0.3453538417816162},{"id":"https://openalex.org/keywords/distributed-computing","display_name":"Distributed computing","score":0.34248843789100647},{"id":"https://openalex.org/keywords/edge-computing","display_name":"Edge computing","score":0.31520628929138184},{"id":"https://openalex.org/keywords/regular-polygon","display_name":"Regular polygon","score":0.3125152587890625},{"id":"https://openalex.org/keywords/enhanced-data-rates-for-gsm-evolution","display_name":"Enhanced Data Rates for GSM Evolution","score":0.23684167861938477},{"id":"https://openalex.org/keywords/optimal-control","display_name":"Optimal control","score":0.23456326127052307},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.1930062174797058},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.17335858941078186},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.1102454662322998},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.08467298746109009}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7636104822158813},{"id":"https://openalex.org/C2781041963","wikidata":"https://www.wikidata.org/wiki/Q18348618","display_name":"Computation offloading","level":4,"score":0.6538589596748352},{"id":"https://openalex.org/C173246807","wikidata":"https://www.wikidata.org/wiki/Q7833062","display_name":"Trajectory optimization","level":3,"score":0.6338176131248474},{"id":"https://openalex.org/C206729178","wikidata":"https://www.wikidata.org/wiki/Q2271896","display_name":"Scheduling (production processes)","level":2,"score":0.6317012310028076},{"id":"https://openalex.org/C45374587","wikidata":"https://www.wikidata.org/wiki/Q12525525","display_name":"Computation","level":2,"score":0.60462486743927},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.5622541904449463},{"id":"https://openalex.org/C137836250","wikidata":"https://www.wikidata.org/wiki/Q984063","display_name":"Optimization problem","level":2,"score":0.5098451972007751},{"id":"https://openalex.org/C157972887","wikidata":"https://www.wikidata.org/wiki/Q463359","display_name":"Convex optimization","level":3,"score":0.5048083066940308},{"id":"https://openalex.org/C29202148","wikidata":"https://www.wikidata.org/wiki/Q287260","display_name":"Resource allocation","level":2,"score":0.49063435196876526},{"id":"https://openalex.org/C200157131","wikidata":"https://www.wikidata.org/wiki/Q4854763","display_name":"Bandwidth allocation","level":3,"score":0.4353242814540863},{"id":"https://openalex.org/C93996380","wikidata":"https://www.wikidata.org/wiki/Q44127","display_name":"Server","level":2,"score":0.432012140750885},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.3453913629055023},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.3453538417816162},{"id":"https://openalex.org/C120314980","wikidata":"https://www.wikidata.org/wiki/Q180634","display_name":"Distributed computing","level":1,"score":0.34248843789100647},{"id":"https://openalex.org/C2778456923","wikidata":"https://www.wikidata.org/wiki/Q5337692","display_name":"Edge computing","level":3,"score":0.31520628929138184},{"id":"https://openalex.org/C112680207","wikidata":"https://www.wikidata.org/wiki/Q714886","display_name":"Regular polygon","level":2,"score":0.3125152587890625},{"id":"https://openalex.org/C162307627","wikidata":"https://www.wikidata.org/wiki/Q204833","display_name":"Enhanced Data Rates for GSM Evolution","level":2,"score":0.23684167861938477},{"id":"https://openalex.org/C91575142","wikidata":"https://www.wikidata.org/wiki/Q1971426","display_name":"Optimal control","level":2,"score":0.23456326127052307},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.1930062174797058},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.17335858941078186},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.1102454662322998},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.08467298746109009},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/globecom48099.2022.10001422","is_oa":false,"landing_page_url":"https://doi.org/10.1109/globecom48099.2022.10001422","pdf_url":null,"source":{"id":"https://openalex.org/S4363607705","display_name":"GLOBECOM 2022 - 2022 IEEE Global Communications Conference","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"GLOBECOM 2022 - 2022 IEEE Global Communications Conference","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":9,"referenced_works":["https://openalex.org/W2896883851","https://openalex.org/W2924948991","https://openalex.org/W3115826427","https://openalex.org/W3128807435","https://openalex.org/W3160217105","https://openalex.org/W3169817290","https://openalex.org/W3175044018","https://openalex.org/W3207720268","https://openalex.org/W3214727290"],"related_works":["https://openalex.org/W2966556967","https://openalex.org/W2894114519","https://openalex.org/W4297093186","https://openalex.org/W4282941432","https://openalex.org/W3200145713","https://openalex.org/W2997189060","https://openalex.org/W4404692753","https://openalex.org/W4395060245","https://openalex.org/W4403954200","https://openalex.org/W4232672622"],"abstract_inverted_index":{"In":[0,134],"this":[1],"paper,":[2],"we":[3,100,107,161],"study":[4],"the":[5,36,71,76,82,92,102,136,148,163],"computation":[6,19,29,88,124],"offloading":[7,116],"problem":[8],"in":[9],"space-air-ground":[10],"integrated":[11],"networks":[12],"(SAGIN),":[13],"where":[14,106],"joint":[15],"optimization":[16,98,104],"of":[17,75,86,165],"partial":[18,115],"offloading,":[20],"unmanned":[21],"aerial":[22],"vehicles":[23],"(UAVs)":[24],"trajectory":[25,47,130,154],"control,":[26],"user":[27,113],"scheduling,":[28,114],"and":[30,48,78,118,128,146,152],"resource":[31],"allocation":[32,120,151],"is":[33,142],"performed.":[34],"Specifically,":[35],"considered":[37],"SAGIN":[38],"employs":[39],"multiple":[40],"UAV-mounted":[41],"edge":[42],"servers":[43],"with":[44],"controllable":[45],"UAV":[46,153],"a":[49],"cloud":[50],"sever":[51],"which":[52],"can":[53],"be":[54],"reached":[55],"by":[56],"ground":[57],"users":[58],"(GUs)":[59],"via":[60],"multi-hop":[61],"low-earth-orbit":[62],"(LEO)":[63],"satellite":[64],"communications.":[65],"This":[66],"design":[67,168],"aims":[68],"to":[69,144,170],"minimize":[70],"weighted":[72],"energy":[73],"consumption":[74],"GUs":[77],"UAVs":[79],"while":[80],"satisfying":[81],"maximum":[83],"delay":[84],"constraints":[85],"underlying":[87,93],"tasks.":[89],"To":[90],"tackle":[91],"non-convex":[94,149],"mixed":[95],"integer":[96],"non-linear":[97],"problem,":[99],"use":[101],"alternating":[103],"approach":[105],"iteratively":[108],"solve":[109,147],"five":[110],"sub-problems,":[111],"namely":[112],"control":[117,131,155],"bit":[119],"over":[121],"time":[122],"slots,":[123],"resource,":[125],"bandwidth":[126,150],"allocation,":[127],"multi-UAV":[129],"until":[132],"convergence.":[133],"addition,":[135],"successive":[137],"convex":[138],"approximation":[139],"(SCA)":[140],"method":[141],"employed":[143],"convexify":[145],"sub-problems.":[156],"Via":[157],"extensive":[158],"numerical":[159],"studies,":[160],"illustrate":[162],"effectiveness":[164],"our":[166],"proposed":[167],"compared":[169],"baselines":[171],"under":[172],"different":[173],"network":[174],"settings.":[175]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":6},{"year":2024,"cited_by_count":7},{"year":2023,"cited_by_count":3}],"updated_date":"2026-07-15T18:14:33.161393","created_date":"2025-10-10T00:00:00"}