{"id":"https://openalex.org/W2887594205","doi":"https://doi.org/10.1109/icc.2018.8422634","title":"A Contention Transmission Unit Allocation Scheme for Uplink Grant-Free SCMA Systems","display_name":"A Contention Transmission Unit Allocation Scheme for Uplink Grant-Free SCMA Systems","publication_year":2018,"publication_date":"2018-05-01","ids":{"openalex":"https://openalex.org/W2887594205","doi":"https://doi.org/10.1109/icc.2018.8422634","mag":"2887594205"},"language":"en","primary_location":{"id":"doi:10.1109/icc.2018.8422634","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icc.2018.8422634","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2018 IEEE International Conference on Communications (ICC)","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/A5101601636","display_name":"Junwei Sun","orcid":"https://orcid.org/0000-0002-4650-9537"},"institutions":[{"id":"https://openalex.org/I204983213","display_name":"Harbin Institute of Technology","ror":"https://ror.org/01yqg2h08","country_code":"CN","type":"education","lineage":["https://openalex.org/I204983213"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Junwei Sun","raw_affiliation_strings":["School of Electronic and Information Engineering, Harbin Institute of Technology, Harbin, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Electronic and Information Engineering, Harbin Institute of Technology, Harbin, China","institution_ids":["https://openalex.org/I204983213"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5090160782","display_name":"Wei Wu","orcid":"https://orcid.org/0000-0001-8534-3667"},"institutions":[{"id":"https://openalex.org/I204983213","display_name":"Harbin Institute of Technology","ror":"https://ror.org/01yqg2h08","country_code":"CN","type":"education","lineage":["https://openalex.org/I204983213"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Wei Wu","raw_affiliation_strings":["School of Electronic and Information Engineering, Harbin Institute of Technology, Harbin, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Electronic and Information Engineering, Harbin Institute of Technology, Harbin, China","institution_ids":["https://openalex.org/I204983213"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5036636413","display_name":"Xuanli Wu","orcid":"https://orcid.org/0000-0002-2239-0367"},"institutions":[{"id":"https://openalex.org/I204983213","display_name":"Harbin Institute of Technology","ror":"https://ror.org/01yqg2h08","country_code":"CN","type":"education","lineage":["https://openalex.org/I204983213"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xuanli Wu","raw_affiliation_strings":["School of Electronic and Information Engineering, Harbin Institute of Technology, Harbin, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Electronic and Information Engineering, Harbin Institute of Technology, Harbin, China","institution_ids":["https://openalex.org/I204983213"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I204983213"],"apc_list":null,"apc_paid":null,"fwci":2.3379,"has_fulltext":false,"cited_by_count":9,"citation_normalized_percentile":{"value":0.88421198,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":98},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"5"},"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/T10796","display_name":"Cooperative Communication and Network Coding","score":0.9983000159263611,"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"}},{"id":"https://openalex.org/T11797","display_name":"graph theory and CDMA systems","score":0.9980999827384949,"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":0.7917882204055786},{"id":"https://openalex.org/keywords/network-packet","display_name":"Network packet","score":0.6599091291427612},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.6372739672660828},{"id":"https://openalex.org/keywords/overhead","display_name":"Overhead (engineering)","score":0.5818104147911072},{"id":"https://openalex.org/keywords/latency","display_name":"Latency (audio)","score":0.5516626238822937},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.5065547227859497},{"id":"https://openalex.org/keywords/transmission","display_name":"Transmission (telecommunications)","score":0.49715951085090637},{"id":"https://openalex.org/keywords/resource-allocation","display_name":"Resource allocation","score":0.43788713216781616},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.3263999819755554},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.10354083776473999},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.08519589900970459}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7917882204055786},{"id":"https://openalex.org/C158379750","wikidata":"https://www.wikidata.org/wiki/Q214111","display_name":"Network packet","level":2,"score":0.6599091291427612},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.6372739672660828},{"id":"https://openalex.org/C2779960059","wikidata":"https://www.wikidata.org/wiki/Q7113681","display_name":"Overhead (engineering)","level":2,"score":0.5818104147911072},{"id":"https://openalex.org/C82876162","wikidata":"https://www.wikidata.org/wiki/Q17096504","display_name":"Latency (audio)","level":2,"score":0.5516626238822937},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.5065547227859497},{"id":"https://openalex.org/C761482","wikidata":"https://www.wikidata.org/wiki/Q118093","display_name":"Transmission (telecommunications)","level":2,"score":0.49715951085090637},{"id":"https://openalex.org/C29202148","wikidata":"https://www.wikidata.org/wiki/Q287260","display_name":"Resource allocation","level":2,"score":0.43788713216781616},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.3263999819755554},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.10354083776473999},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.08519589900970459},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/icc.2018.8422634","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icc.2018.8422634","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2018 IEEE International Conference on Communications (ICC)","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":8,"referenced_works":["https://openalex.org/W2008104692","https://openalex.org/W2087544022","https://openalex.org/W2155014525","https://openalex.org/W2156374892","https://openalex.org/W2241996900","https://openalex.org/W2601871131","https://openalex.org/W2741443035","https://openalex.org/W2792935773"],"related_works":["https://openalex.org/W2548963335","https://openalex.org/W2159941915","https://openalex.org/W2962882802","https://openalex.org/W2571404653","https://openalex.org/W1995129237","https://openalex.org/W1761601995","https://openalex.org/W4300468626","https://openalex.org/W2963570985","https://openalex.org/W2907156721","https://openalex.org/W2590022098"],"abstract_inverted_index":{"In":[0,78,114],"order":[1],"to":[2,65,102,132],"satisfy":[3],"the":[4,12,37,54,66,71,84,87,93,111,129,142,151,159],"requirement":[5],"of":[6,14,68,73,86,95,110],"supporting":[7],"massive":[8],"connectivity":[9],"accompanied":[10],"by":[11,53],"cost":[13],"transmission":[15,33,42],"latency":[16],"and":[17,135],"signaling":[18],"overhead,":[19],"uplink":[20],"(UL)":[21],"grant-free":[22],"Sparse":[23],"Code":[24],"Multiple":[25],"Access":[26],"(SCMA)":[27],"design":[28],"has":[29],"been":[30],"proposed.":[31],"Contention":[32],"unit":[34],"(CTU)":[35],"is":[36,75,100],"basic":[38],"resource":[39],"for":[40,43],"contention":[41],"UL":[44],"SCMA.":[45],"Most":[46],"CTU":[47,51,153],"allocation":[48,112,154],"schemes":[49],"allocate":[50],"just":[52],"UE_ID,":[55],"which":[56,139],"may":[57],"bring":[58],"about":[59],"high":[60],"packet":[61,89,97,160],"loss":[62,90,98,161],"rate":[63,99,162],"due":[64],"collision":[67],"CTUs":[69],"when":[70],"activeness":[72,124],"UEs":[74],"not":[76],"similar.":[77],"this":[79,115],"paper,":[80,116],"we":[81,117],"first":[82],"study":[83],"equation":[85],"average":[88,96],"rate,":[91],"where":[92],"optimization":[94],"proved":[101],"be":[103],"a":[104,108,119,133],"NP-hard":[105,130],"problem":[106,131],"as":[107],"function":[109],"scheme.":[113],"proposed":[118,152],"novel":[120],"scheme":[121,155],"based":[122],"on":[123],"via":[125],"dynamic":[126],"programming":[127],"transforming":[128],"solvable":[134],"low":[136,165],"complexity":[137],"problem,":[138],"can":[140,156],"obtain":[141],"Pareto":[143],"optimal":[144],"solution":[145],"ultimately.":[146],"Simulation":[147],"results":[148],"demonstrate":[149],"that":[150],"greatly":[157],"reduce":[158],"with":[163],"extremely":[164],"complexity.":[166]},"counts_by_year":[{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":1},{"year":2020,"cited_by_count":2},{"year":2019,"cited_by_count":4}],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2025-10-10T00:00:00"}
