{"id":"https://openalex.org/W2910412875","doi":"https://doi.org/10.1109/comst.2019.2892806","title":"Flexibility in Softwarized Networks: Classifications and Research Challenges","display_name":"Flexibility in Softwarized Networks: Classifications and Research Challenges","publication_year":2019,"publication_date":"2019-01-01","ids":{"openalex":"https://openalex.org/W2910412875","doi":"https://doi.org/10.1109/comst.2019.2892806","mag":"2910412875"},"language":"en","primary_location":{"id":"doi:10.1109/comst.2019.2892806","is_oa":false,"landing_page_url":"https://doi.org/10.1109/comst.2019.2892806","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":"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/A5033340455","display_name":"Mu He","orcid":"https://orcid.org/0000-0002-7563-859X"},"institutions":[{"id":"https://openalex.org/I62916508","display_name":"Technical University of Munich","ror":"https://ror.org/02kkvpp62","country_code":"DE","type":"education","lineage":["https://openalex.org/I62916508"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Mu He","raw_affiliation_strings":["Department of Electrical and Computer Engineering, Technical University of Munich, Munich, Germany"],"raw_orcid":"https://orcid.org/0000-0002-7563-859X","affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, Technical University of Munich, Munich, Germany","institution_ids":["https://openalex.org/I62916508"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5056452597","display_name":"Alberto Mart\u00ednez Alba","orcid":"https://orcid.org/0000-0003-3417-2698"},"institutions":[{"id":"https://openalex.org/I62916508","display_name":"Technical University of Munich","ror":"https://ror.org/02kkvpp62","country_code":"DE","type":"education","lineage":["https://openalex.org/I62916508"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Alberto Martinez Alba","raw_affiliation_strings":["Department of Electrical and Computer Engineering, Technical University of Munich, Munich, Germany"],"raw_orcid":"https://orcid.org/0000-0003-3417-2698","affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, Technical University of Munich, Munich, Germany","institution_ids":["https://openalex.org/I62916508"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5023975348","display_name":"Arsany Basta","orcid":"https://orcid.org/0000-0002-6755-3748"},"institutions":[{"id":"https://openalex.org/I62916508","display_name":"Technical University of Munich","ror":"https://ror.org/02kkvpp62","country_code":"DE","type":"education","lineage":["https://openalex.org/I62916508"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Arsany Basta","raw_affiliation_strings":["Department of Electrical and Computer Engineering, Technical University of Munich, Munich, Germany"],"raw_orcid":"https://orcid.org/0000-0002-6755-3748","affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, Technical University of Munich, Munich, Germany","institution_ids":["https://openalex.org/I62916508"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5010345569","display_name":"Andreas Blenk","orcid":"https://orcid.org/0000-0002-2001-4050"},"institutions":[{"id":"https://openalex.org/I62916508","display_name":"Technical University of Munich","ror":"https://ror.org/02kkvpp62","country_code":"DE","type":"education","lineage":["https://openalex.org/I62916508"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Andreas Blenk","raw_affiliation_strings":["Department of Electrical and Computer Engineering, Technical University of Munich, Munich, Germany"],"raw_orcid":"https://orcid.org/0000-0002-2001-4050","affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, Technical University of Munich, Munich, Germany","institution_ids":["https://openalex.org/I62916508"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5021781616","display_name":"Wolfgang Kellerer","orcid":"https://orcid.org/0000-0003-4358-8038"},"institutions":[{"id":"https://openalex.org/I62916508","display_name":"Technical University of Munich","ror":"https://ror.org/02kkvpp62","country_code":"DE","type":"education","lineage":["https://openalex.org/I62916508"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Wolfgang Kellerer","raw_affiliation_strings":["Department of Electrical and Computer Engineering, Technical University of Munich, Munich, Germany"],"raw_orcid":"https://orcid.org/0000-0003-4358-8038","affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, Technical University of Munich, Munich, Germany","institution_ids":["https://openalex.org/I62916508"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I62916508"],"apc_list":null,"apc_paid":null,"fwci":8.8856,"has_fulltext":false,"cited_by_count":71,"citation_normalized_percentile":{"value":0.98131232,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":96,"max":100},"biblio":{"volume":"21","issue":"3","first_page":"2600","last_page":"2636"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10714","display_name":"Software-Defined Networks and 5G","score":1.0,"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"}},"topics":[{"id":"https://openalex.org/T10714","display_name":"Software-Defined Networks and 5G","score":1.0,"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/T10138","display_name":"Network Traffic and Congestion Control","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/T10847","display_name":"Advanced Optical Network Technologies","score":0.9958000183105469,"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":0.7359557151794434},{"id":"https://openalex.org/keywords/flexibility","display_name":"Flexibility (engineering)","score":0.7246541380882263},{"id":"https://openalex.org/keywords/scalability","display_name":"Scalability","score":0.4698846638202667},{"id":"https://openalex.org/keywords/distributed-computing","display_name":"Distributed computing","score":0.36258453130722046},{"id":"https://openalex.org/keywords/database","display_name":"Database","score":0.11658069491386414}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7359557151794434},{"id":"https://openalex.org/C2780598303","wikidata":"https://www.wikidata.org/wiki/Q65921492","display_name":"Flexibility (engineering)","level":2,"score":0.7246541380882263},{"id":"https://openalex.org/C48044578","wikidata":"https://www.wikidata.org/wiki/Q727490","display_name":"Scalability","level":2,"score":0.4698846638202667},{"id":"https://openalex.org/C120314980","wikidata":"https://www.wikidata.org/wiki/Q180634","display_name":"Distributed computing","level":1,"score":0.36258453130722046},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.11658069491386414},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.0},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/comst.2019.2892806","is_oa":false,"landing_page_url":"https://doi.org/10.1109/comst.2019.2892806","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"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G2182220421","display_name":"Quantifying Flexibility in Communication Networks","funder_award_id":"647158","funder_id":"https://openalex.org/F4320338335","funder_display_name":"H2020 European Research Council"}],"funders":[{"id":"https://openalex.org/F4320338335","display_name":"H2020 European Research Council","ror":"https://ror.org/0472cxd90"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":223,"referenced_works":["https://openalex.org/W331141525","https://openalex.org/W565267543","https://openalex.org/W806409524","https://openalex.org/W1480714054","https://openalex.org/W1489528905","https://openalex.org/W1501077214","https://openalex.org/W1505479660","https://openalex.org/W1517313325","https://openalex.org/W1539925810","https://openalex.org/W1540047495","https://openalex.org/W1546865596","https://openalex.org/W1548429015","https://openalex.org/W1551453263","https://openalex.org/W1556758467","https://openalex.org/W1557418999","https://openalex.org/W1561366358","https://openalex.org/W1604047786","https://openalex.org/W1699100222","https://openalex.org/W1792894036","https://openalex.org/W1796714434","https://openalex.org/W1829787244","https://openalex.org/W1889021193","https://openalex.org/W1940223433","https://openalex.org/W1953687040","https://openalex.org/W1967912924","https://openalex.org/W1969542646","https://openalex.org/W1972245884","https://openalex.org/W1975489258","https://openalex.org/W1980959920","https://openalex.org/W1983083125","https://openalex.org/W1987716505","https://openalex.org/W1992333513","https://openalex.org/W1994878675","https://openalex.org/W1994926493","https://openalex.org/W1995015596","https://openalex.org/W1997154861","https://openalex.org/W1997650479","https://openalex.org/W2003021396","https://openalex.org/W2005957555","https://openalex.org/W2007111180","https://openalex.org/W2010489945","https://openalex.org/W2010947830","https://openalex.org/W2013429917","https://openalex.org/W2017158367","https://openalex.org/W2020169698","https://openalex.org/W2022191549","https://openalex.org/W2022758041","https://openalex.org/W2023834667","https://openalex.org/W2025879446","https://openalex.org/W2027449312","https://openalex.org/W2030550020","https://openalex.org/W2034677282","https://openalex.org/W2036790014","https://openalex.org/W2038268348","https://openalex.org/W2038957884","https://openalex.org/W2039579846","https://openalex.org/W2040340473","https://openalex.org/W2041008854","https://openalex.org/W2041849649","https://openalex.org/W2042308583","https://openalex.org/W2042876290","https://openalex.org/W2046940417","https://openalex.org/W2047400303","https://openalex.org/W2050058335","https://openalex.org/W2050542575","https://openalex.org/W2054473533","https://openalex.org/W2054876181","https://openalex.org/W2055115521","https://openalex.org/W2058043969","https://openalex.org/W2060898162","https://openalex.org/W2061994694","https://openalex.org/W2062086684","https://openalex.org/W2062596448","https://openalex.org/W2064969374","https://openalex.org/W2067453331","https://openalex.org/W2067605982","https://openalex.org/W2072469843","https://openalex.org/W2072679814","https://openalex.org/W2074616737","https://openalex.org/W2077661716","https://openalex.org/W2078771756","https://openalex.org/W2079451943","https://openalex.org/W2080555506","https://openalex.org/W2085740045","https://openalex.org/W2087733350","https://openalex.org/W2090290087","https://openalex.org/W2098374802","https://openalex.org/W2099007136","https://openalex.org/W2100771748","https://openalex.org/W2108756032","https://openalex.org/W2108800854","https://openalex.org/W2112700013","https://openalex.org/W2114298221","https://openalex.org/W2115070561","https://openalex.org/W2115456330","https://openalex.org/W2120482701","https://openalex.org/W2120900812","https://openalex.org/W2121090870","https://openalex.org/W2121318675","https://openalex.org/W2125560635","https://openalex.org/W2125830988","https://openalex.org/W2126210439","https://openalex.org/W2132238781","https://openalex.org/W2135505107","https://openalex.org/W2137421268","https://openalex.org/W2137655008","https://openalex.org/W2139296641","https://openalex.org/W2139720424","https://openalex.org/W2141171328","https://openalex.org/W2141393937","https://openalex.org/W2142547489","https://openalex.org/W2142851547","https://openalex.org/W2144127235","https://openalex.org/W2144192824","https://openalex.org/W2147118406","https://openalex.org/W2148869760","https://openalex.org/W2150093579","https://openalex.org/W2150127945","https://openalex.org/W2151268583","https://openalex.org/W2155593733","https://openalex.org/W2156160382","https://openalex.org/W2161523741","https://openalex.org/W2161965229","https://openalex.org/W2163234538","https://openalex.org/W2163769126","https://openalex.org/W2165164808","https://openalex.org/W2167153151","https://openalex.org/W2170803695","https://openalex.org/W2186961980","https://openalex.org/W2203584209","https://openalex.org/W2209662895","https://openalex.org/W2210790443","https://openalex.org/W2212986288","https://openalex.org/W2225196063","https://openalex.org/W2243257940","https://openalex.org/W2243364765","https://openalex.org/W2260783129","https://openalex.org/W2273138441","https://openalex.org/W2275015310","https://openalex.org/W2276629685","https://openalex.org/W2280325016","https://openalex.org/W2288643294","https://openalex.org/W2289673435","https://openalex.org/W2290414438","https://openalex.org/W2312611768","https://openalex.org/W2328709599","https://openalex.org/W2338941390","https://openalex.org/W2345223279","https://openalex.org/W2345842246","https://openalex.org/W2399306297","https://openalex.org/W2405068176","https://openalex.org/W2409751457","https://openalex.org/W2413646128","https://openalex.org/W2468115901","https://openalex.org/W2469021143","https://openalex.org/W2471647275","https://openalex.org/W2486585826","https://openalex.org/W2516820881","https://openalex.org/W2518660493","https://openalex.org/W2520993345","https://openalex.org/W2536380892","https://openalex.org/W2537649431","https://openalex.org/W2546571074","https://openalex.org/W2548115664","https://openalex.org/W2550252820","https://openalex.org/W2552922956","https://openalex.org/W2557944756","https://openalex.org/W2558568316","https://openalex.org/W2569929970","https://openalex.org/W2577097471","https://openalex.org/W2582469668","https://openalex.org/W2586472645","https://openalex.org/W2596944875","https://openalex.org/W2604174486","https://openalex.org/W2604420083","https://openalex.org/W2605837110","https://openalex.org/W2608069300","https://openalex.org/W2612089887","https://openalex.org/W2613303871","https://openalex.org/W2617564520","https://openalex.org/W2624944960","https://openalex.org/W2737155363","https://openalex.org/W2739744122","https://openalex.org/W2740027807","https://openalex.org/W2765816777","https://openalex.org/W2768111634","https://openalex.org/W2768411980","https://openalex.org/W2770253907","https://openalex.org/W2785693579","https://openalex.org/W2796181329","https://openalex.org/W2798915702","https://openalex.org/W2888081310","https://openalex.org/W2892073796","https://openalex.org/W2904095641","https://openalex.org/W2945526390","https://openalex.org/W2950441226","https://openalex.org/W2963289752","https://openalex.org/W3098347096","https://openalex.org/W3103243695","https://openalex.org/W3123499450","https://openalex.org/W3124329888","https://openalex.org/W4232093111","https://openalex.org/W4237992594","https://openalex.org/W4238120498","https://openalex.org/W4285719527","https://openalex.org/W4297816311","https://openalex.org/W4323053771","https://openalex.org/W6628961380","https://openalex.org/W6630184869","https://openalex.org/W6638359055","https://openalex.org/W6638835209","https://openalex.org/W6639335865","https://openalex.org/W6678603466","https://openalex.org/W6684402220","https://openalex.org/W6686885839","https://openalex.org/W6694273452","https://openalex.org/W6701761579","https://openalex.org/W6713625904","https://openalex.org/W6732401530","https://openalex.org/W6736687648","https://openalex.org/W6750886310","https://openalex.org/W6754818306","https://openalex.org/W6757121625"],"related_works":["https://openalex.org/W2302028273","https://openalex.org/W2364921833","https://openalex.org/W2385146268","https://openalex.org/W2380023786","https://openalex.org/W2546696010","https://openalex.org/W1992741870","https://openalex.org/W2027487876","https://openalex.org/W1993148641","https://openalex.org/W2687174480","https://openalex.org/W1876949934"],"abstract_inverted_index":{"The":[0,47],"increase":[1],"of":[2,8,49,66,155,196,213,217],"flexibility":[3,29,50,67,87,104,122,136,141,157,180,197,218],"is":[4,30,56,68,89,181],"a":[5,36,63,83,152,209],"common":[6,64,153],"objective":[7],"softwarized":[9,80,162,225],"networks":[10,81,226],"based":[11],"on":[12,85],"concepts,":[13],"such":[14,52],"as":[15,32,62],"software":[16],"defined":[17,184],"networking,":[18],"network":[19,23,108,143],"function":[20],"virtualization,":[21],"and":[22,129,146,164,188,198,227],"virtualization.":[24],"Hence,":[25],"in":[26,45,59,79,135,148,161,185],"the":[27,60,77,86,103,119,133,177,186,199,206,214],"state-of-the-art,":[28],"used":[31],"an":[33],"argument":[34],"for":[35,224],"certain":[37],"proposed":[38,93],"architecture,":[39],"solution":[40],"mechanism":[41,95],"or":[42,96],"design":[43,215],"choice":[44],"general.":[46],"meaning":[48],"behind":[51],"rather":[53],"qualitative":[54],"arguments":[55],"highly":[57],"diversified":[58],"literature,":[61,187],"understanding":[65,154],"missing":[69],"so":[70],"far.":[71],"In":[72,98],"this":[73],"paper,":[74],"we":[75,100,168],"survey":[76],"state-of-the-art":[78,134],"with":[82],"focus":[84],"that":[88,102,179,219],"provided":[90,105,160],"by":[91,106],"each":[92],"concept,":[94],"system.":[97],"particular,":[99],"show":[101],"different":[107,116],"softwarization":[109],"technologies":[110],"can":[111,158],"be":[112,159],"classified":[113],"into":[114],"six":[115],"aspects":[117],"within":[118],"three":[120],"high-level":[121],"categories,":[123],"i.e.,":[124],"configuration":[125],"adaptation,":[126],"functions":[127],"location,":[128],"scalability.":[130],"We":[131],"analyze":[132],"from":[137],"several":[138],"viewpoints":[139],"including":[140],"aspects,":[142],"technologies,":[144],"domains":[145],"planes":[147],"order":[149],"to":[150,176],"derive":[151,189],"how":[156],"wireline":[163],"wireless":[165],"networks.":[166],"Moreover,":[167],"reveal":[169],"open":[170],"issues,":[171],"which":[172],"are":[173],"mostly":[174],"related":[175],"fact":[178],"not":[182],"clearly":[183],"concrete":[190],"research":[191,201],"challenges":[192,202],"accordingly.":[193],"Our":[194],"classification":[195],"derived":[200],"aim":[203],"at":[204],"stimulating":[205],"discussion":[207],"toward":[208],"more":[210],"quantitative":[211],"analysis":[212],"requirement":[216],"has":[220],"demonstrated":[221],"increasing":[222],"importance":[223],"beyond.":[228]},"counts_by_year":[{"year":2025,"cited_by_count":3},{"year":2024,"cited_by_count":7},{"year":2023,"cited_by_count":11},{"year":2022,"cited_by_count":9},{"year":2021,"cited_by_count":10},{"year":2020,"cited_by_count":19},{"year":2019,"cited_by_count":12}],"updated_date":"2026-03-27T05:58:40.876381","created_date":"2025-10-10T00:00:00"}