{"id":"https://openalex.org/W2964316812","doi":"https://doi.org/10.1109/twc.2017.2705038","title":"Mobility-Aware Caching in D2D Networks","display_name":"Mobility-Aware Caching in D2D Networks","publication_year":2017,"publication_date":"2017-05-22","ids":{"openalex":"https://openalex.org/W2964316812","doi":"https://doi.org/10.1109/twc.2017.2705038","mag":"2964316812"},"language":"en","primary_location":{"id":"doi:10.1109/twc.2017.2705038","is_oa":false,"landing_page_url":"https://doi.org/10.1109/twc.2017.2705038","pdf_url":null,"source":{"id":"https://openalex.org/S63459445","display_name":"IEEE Transactions on Wireless Communications","issn_l":"1536-1276","issn":["1536-1276","1558-2248"],"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 Wireless Communications","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/A5100431344","display_name":"Rui Wang","orcid":null},"institutions":[{"id":"https://openalex.org/I200769079","display_name":"Hong Kong University of Science and Technology","ror":"https://ror.org/00q4vv597","country_code":"HK","type":"education","lineage":["https://openalex.org/I200769079"]}],"countries":["HK"],"is_corresponding":true,"raw_author_name":"Rui Wang","raw_affiliation_strings":["Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong"],"affiliations":[{"raw_affiliation_string":"Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong","institution_ids":["https://openalex.org/I200769079"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100433167","display_name":"Jun Zhang","orcid":"https://orcid.org/0000-0002-5222-1898"},"institutions":[{"id":"https://openalex.org/I200769079","display_name":"Hong Kong University of Science and Technology","ror":"https://ror.org/00q4vv597","country_code":"HK","type":"education","lineage":["https://openalex.org/I200769079"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"Jun Zhang","raw_affiliation_strings":["Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong"],"affiliations":[{"raw_affiliation_string":"Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong","institution_ids":["https://openalex.org/I200769079"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5025467937","display_name":"Shenghui Song","orcid":"https://orcid.org/0000-0001-6316-8415"},"institutions":[{"id":"https://openalex.org/I200769079","display_name":"Hong Kong University of Science and Technology","ror":"https://ror.org/00q4vv597","country_code":"HK","type":"education","lineage":["https://openalex.org/I200769079"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"S. H. Song","raw_affiliation_strings":["Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong"],"affiliations":[{"raw_affiliation_string":"Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong","institution_ids":["https://openalex.org/I200769079"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5079052203","display_name":"Khaled B. Letaief","orcid":"https://orcid.org/0000-0003-2519-6401"},"institutions":[{"id":"https://openalex.org/I200769079","display_name":"Hong Kong University of Science and Technology","ror":"https://ror.org/00q4vv597","country_code":"HK","type":"education","lineage":["https://openalex.org/I200769079"]},{"id":"https://openalex.org/I4210144839","display_name":"Hamad bin Khalifa University","ror":"https://ror.org/03eyq4y97","country_code":"QA","type":"education","lineage":["https://openalex.org/I4210144839"]}],"countries":["HK","QA"],"is_corresponding":false,"raw_author_name":"Khaled B. Letaief","raw_affiliation_strings":["Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong","Hamad Bin Khalifa University, Doha, Qatar"],"affiliations":[{"raw_affiliation_string":"Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong","institution_ids":["https://openalex.org/I200769079"]},{"raw_affiliation_string":"Hamad Bin Khalifa University, Doha, Qatar","institution_ids":["https://openalex.org/I4210144839"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5100431344"],"corresponding_institution_ids":["https://openalex.org/I200769079"],"apc_list":null,"apc_paid":null,"fwci":24.0352,"has_fulltext":false,"cited_by_count":169,"citation_normalized_percentile":{"value":0.99640849,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":90,"max":100},"biblio":{"volume":"16","issue":"8","first_page":"5001","last_page":"5015"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11478","display_name":"Caching and Content Delivery","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/T11478","display_name":"Caching and Content Delivery","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/T11896","display_name":"Opportunistic and Delay-Tolerant Networks","score":0.9977999925613403,"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/T10796","display_name":"Cooperative Communication and Network Coding","score":0.9973000288009644,"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/computer-science","display_name":"Computer science","score":0.778792142868042},{"id":"https://openalex.org/keywords/backhaul","display_name":"Backhaul (telecommunications)","score":0.7135370969772339},{"id":"https://openalex.org/keywords/submodular-set-function","display_name":"Submodular set function","score":0.6653878092765808},{"id":"https://openalex.org/keywords/cache","display_name":"Cache","score":0.5365517139434814},{"id":"https://openalex.org/keywords/benchmark","display_name":"Benchmark (surveying)","score":0.45476678013801575},{"id":"https://openalex.org/keywords/greedy-algorithm","display_name":"Greedy algorithm","score":0.4482203722000122},{"id":"https://openalex.org/keywords/base-station","display_name":"Base station","score":0.4467518627643585},{"id":"https://openalex.org/keywords/constraint","display_name":"Constraint (computer-aided design)","score":0.41422000527381897},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.3283289968967438},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.3026416301727295},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.2948419451713562},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.2654540538787842},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.14549103379249573}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.778792142868042},{"id":"https://openalex.org/C103760667","wikidata":"https://www.wikidata.org/wiki/Q798444","display_name":"Backhaul (telecommunications)","level":3,"score":0.7135370969772339},{"id":"https://openalex.org/C178621042","wikidata":"https://www.wikidata.org/wiki/Q7631710","display_name":"Submodular set function","level":2,"score":0.6653878092765808},{"id":"https://openalex.org/C115537543","wikidata":"https://www.wikidata.org/wiki/Q165596","display_name":"Cache","level":2,"score":0.5365517139434814},{"id":"https://openalex.org/C185798385","wikidata":"https://www.wikidata.org/wiki/Q1161707","display_name":"Benchmark (surveying)","level":2,"score":0.45476678013801575},{"id":"https://openalex.org/C51823790","wikidata":"https://www.wikidata.org/wiki/Q504353","display_name":"Greedy algorithm","level":2,"score":0.4482203722000122},{"id":"https://openalex.org/C68649174","wikidata":"https://www.wikidata.org/wiki/Q1379116","display_name":"Base station","level":2,"score":0.4467518627643585},{"id":"https://openalex.org/C2776036281","wikidata":"https://www.wikidata.org/wiki/Q48769818","display_name":"Constraint (computer-aided design)","level":2,"score":0.41422000527381897},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.3283289968967438},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.3026416301727295},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.2948419451713562},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.2654540538787842},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.14549103379249573},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.0},{"id":"https://openalex.org/C13280743","wikidata":"https://www.wikidata.org/wiki/Q131089","display_name":"Geodesy","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}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1109/twc.2017.2705038","is_oa":false,"landing_page_url":"https://doi.org/10.1109/twc.2017.2705038","pdf_url":null,"source":{"id":"https://openalex.org/S63459445","display_name":"IEEE Transactions on Wireless Communications","issn_l":"1536-1276","issn":["1536-1276","1558-2248"],"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 Wireless Communications","raw_type":"journal-article"},{"id":"pmh:oai:repository.hkust.edu.hk:1783.1-86153","is_oa":false,"landing_page_url":"http://repository.hkust.edu.hk/ir/Record/1783.1-86153","pdf_url":null,"source":{"id":"https://openalex.org/S4306401796","display_name":"Rare & Special e-Zone (The Hong Kong University of Science and Technology)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I200769079","host_organization_name":"Hong Kong University of Science and Technology","host_organization_lineage":["https://openalex.org/I200769079"],"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":"Article"},{"id":"pmh:oai:repository.ust.hk:1783.1-86153","is_oa":false,"landing_page_url":"http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=&rft.volume=16&rft.issue=8&rft.date=2017&rft.spage=5001&rft.aulast=Wang&rft.aufirst=Rui%7C015201%7Cehkust-pg&rft.atitle=Mobility-aware+caching+in+D2D+networks&rft.title=IEEE+Transactions+on+Wireless+Communications","pdf_url":null,"source":{"id":"https://openalex.org/S4306401796","display_name":"Rare & Special e-Zone (The Hong Kong University of Science and Technology)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I200769079","host_organization_name":"Hong Kong University of Science and Technology","host_organization_lineage":["https://openalex.org/I200769079"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy","score":0.5299999713897705}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":53,"referenced_works":["https://openalex.org/W1481341908","https://openalex.org/W1576820654","https://openalex.org/W1606035500","https://openalex.org/W1611674276","https://openalex.org/W1680189815","https://openalex.org/W1808280866","https://openalex.org/W1875423025","https://openalex.org/W1928152501","https://openalex.org/W1960633731","https://openalex.org/W1964721119","https://openalex.org/W1966415263","https://openalex.org/W1972738071","https://openalex.org/W1988834815","https://openalex.org/W1990395546","https://openalex.org/W2008076367","https://openalex.org/W2009708702","https://openalex.org/W2035892582","https://openalex.org/W2038519345","https://openalex.org/W2039124714","https://openalex.org/W2054692642","https://openalex.org/W2068705434","https://openalex.org/W2076238075","https://openalex.org/W2076901266","https://openalex.org/W2083994692","https://openalex.org/W2088223436","https://openalex.org/W2096220631","https://openalex.org/W2096509679","https://openalex.org/W2099633905","https://openalex.org/W2100181712","https://openalex.org/W2106248279","https://openalex.org/W2112701160","https://openalex.org/W2122186362","https://openalex.org/W2122496159","https://openalex.org/W2131750568","https://openalex.org/W2132651631","https://openalex.org/W2138677604","https://openalex.org/W2144509357","https://openalex.org/W2149959815","https://openalex.org/W2171844485","https://openalex.org/W2288495388","https://openalex.org/W2364089413","https://openalex.org/W2474113718","https://openalex.org/W2490965583","https://openalex.org/W2796610752","https://openalex.org/W2963372566","https://openalex.org/W2963386201","https://openalex.org/W2964101002","https://openalex.org/W2988480584","https://openalex.org/W3103426447","https://openalex.org/W4237064274","https://openalex.org/W4238655822","https://openalex.org/W6638089653","https://openalex.org/W6696530726"],"related_works":["https://openalex.org/W4297310313","https://openalex.org/W2963149344","https://openalex.org/W2012551222","https://openalex.org/W4303414366","https://openalex.org/W2097644939","https://openalex.org/W1724300815","https://openalex.org/W4200445394","https://openalex.org/W2594059527","https://openalex.org/W2097820490","https://openalex.org/W2357429841"],"abstract_inverted_index":{"Caching":[0],"at":[1,177,195],"mobile":[2],"devices":[3],"can":[4,80],"facilitate":[5],"device-to-device":[6],"(D2D)":[7],"communications,":[8],"which":[9,69,141],"may":[10],"significantly":[11],"improve":[12],"spectrum":[13],"efficiency":[14],"and":[15,53,135],"alleviate":[16],"the":[17,42,47,62,73,76,92,121,125,163,188],"heavy":[18],"burden":[19],"on":[20],"backhaul":[21],"links.":[22],"However,":[23],"most":[24,189],"previous":[25],"works":[26],"ignored":[27],"user":[28,43],"mobility,":[29],"thus":[30],"having":[31],"limited":[32],"practical":[33],"applications.":[34],"In":[35],"this":[36],"paper,":[37],"we":[38,97],"take":[39],"advantage":[40],"of":[41,75,127,165],"mobility":[44],"pattern":[45],"by":[46],"inter-contact":[48],"times":[49],"between":[50],"different":[51],"users,":[52],"propose":[54,99,136],"a":[55,107,132,137,179,196],"mobility-aware":[56,168],"caching":[57,94,169],"placement":[58,95,170],"strategy":[59],"to":[60,105,204],"maximize":[61],"<italic":[63],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[64,148],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">data":[65],"offloading":[66],"ratio</i>":[67],",":[68],"is":[70],"defined":[71],"as":[72,146],"percentage":[74],"requested":[77],"data":[78,159],"that":[79,120,174],"be":[81],"delivered":[82],"via":[83],"D2D":[84],"links":[85],"rather":[86],"than":[87,114],"through":[88],"base":[89],"stations.":[90],"Given":[91],"NP-hard":[93],"problem,":[96],"first":[98],"an":[100,143],"optimal":[101],"dynamic":[102],"programming":[103],"algorithm":[104],"obtain":[106],"performance":[108],"benchmark":[109],"with":[110,157],"much":[111],"lower":[112],"complexity":[113],"exhaustive":[115],"search.":[116],"We":[117,172],"then":[118],"prove":[119],"problem":[122],"falls":[123],"in":[124],"category":[126],"monotone":[128],"submodular":[129],"maximization":[130],"over":[131],"matroid":[133],"constraint,":[134],"time-efficient":[138],"greedy":[139],"algorithm,":[140],"achieves":[142],"approximation":[144],"ratio":[145],"<inline-formula":[147],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">":[149],"<tex-math":[150],"notation=\"LaTeX\">$\\frac":[151],"{1}{2}$":[152],"</tex-math></inline-formula>":[153],".":[154],"Simulation":[155],"results":[156],"real-life":[158],"sets":[160],"will":[161],"validate":[162],"effectiveness":[164],"our":[166],"proposed":[167],"strategy.":[171],"observe":[173],"users":[175,193],"moving":[176,194],"either":[178],"very":[180,183],"low":[181],"or":[182],"high":[184],"speed":[185,198],"should":[186,199],"cache":[187,200],"popular":[190,202],"files,":[191],"while":[192],"medium":[197],"less":[201],"files":[203],"avoid":[205],"duplication.":[206]},"counts_by_year":[{"year":2025,"cited_by_count":6},{"year":2024,"cited_by_count":4},{"year":2023,"cited_by_count":13},{"year":2022,"cited_by_count":10},{"year":2021,"cited_by_count":19},{"year":2020,"cited_by_count":33},{"year":2019,"cited_by_count":42},{"year":2018,"cited_by_count":29},{"year":2017,"cited_by_count":12},{"year":2016,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
