{"id":"https://openalex.org/W3066331332","doi":"https://doi.org/10.3390/s20164651","title":"Cache-Based Privacy Preserving Solution for Location and Content Protection in Location-Based Services","display_name":"Cache-Based Privacy Preserving Solution for Location and Content Protection in Location-Based Services","publication_year":2020,"publication_date":"2020-08-18","ids":{"openalex":"https://openalex.org/W3066331332","doi":"https://doi.org/10.3390/s20164651","mag":"3066331332","pmid":"https://pubmed.ncbi.nlm.nih.gov/32824808"},"language":"en","primary_location":{"id":"doi:10.3390/s20164651","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s20164651","pdf_url":"https://www.mdpi.com/1424-8220/20/16/4651/pdf?version=1597752171","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj","pubmed"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/1424-8220/20/16/4651/pdf?version=1597752171","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5056671837","display_name":"Yuanbo Cui","orcid":"https://orcid.org/0000-0002-3843-6673"},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yuanbo Cui","raw_affiliation_strings":["State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China"],"raw_orcid":"https://orcid.org/0000-0002-3843-6673","affiliations":[{"raw_affiliation_string":"State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5050423562","display_name":"Fei Gao","orcid":"https://orcid.org/0000-0002-1546-4364"},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Fei Gao","raw_affiliation_strings":["State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5003153613","display_name":"Wenmin Li","orcid":"https://orcid.org/0000-0002-1278-1735"},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Wenmin Li","raw_affiliation_strings":["State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5102490382","display_name":"Yijie Shi","orcid":"https://orcid.org/0000-0002-7357-7826"},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yijie Shi","raw_affiliation_strings":["State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100408679","display_name":"Hua Zhang","orcid":"https://orcid.org/0000-0002-0532-9783"},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Hua Zhang","raw_affiliation_strings":["State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5071607720","display_name":"Qiaoyan Wen","orcid":"https://orcid.org/0000-0001-7142-9726"},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Qiaoyan Wen","raw_affiliation_strings":["State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5090517118","display_name":"Emmanouil Panaousis","orcid":null},"institutions":[{"id":"https://openalex.org/I55060895","display_name":"University of Greenwich","ror":"https://ror.org/00bmj0a71","country_code":"GB","type":"education","lineage":["https://openalex.org/I55060895"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Emmanouil Panaousis","raw_affiliation_strings":["School of Computing and Mathematical Sciences, University of Greenwich, London SE10 9LS, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Computing and Mathematical Sciences, University of Greenwich, London SE10 9LS, UK","institution_ids":["https://openalex.org/I55060895"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5003153613"],"corresponding_institution_ids":["https://openalex.org/I139759216"],"apc_list":{"value":2400,"currency":"CHF","value_usd":2673},"apc_paid":{"value":2400,"currency":"CHF","value_usd":2673},"fwci":1.4745,"has_fulltext":true,"cited_by_count":18,"citation_normalized_percentile":{"value":0.86210159,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":91,"max":99},"biblio":{"volume":"20","issue":"16","first_page":"4651","last_page":"4651"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10764","display_name":"Privacy-Preserving Technologies in Data","score":1.0,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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/T10764","display_name":"Privacy-Preserving Technologies in Data","score":1.0,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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/T11045","display_name":"Privacy, Security, and Data Protection","score":0.9954000115394592,"subfield":{"id":"https://openalex.org/subfields/3312","display_name":"Sociology and Political Science"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10237","display_name":"Cryptography and Data Security","score":0.9921000003814697,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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":0.7947192192077637},{"id":"https://openalex.org/keywords/location-based-service","display_name":"Location-based service","score":0.7205835580825806},{"id":"https://openalex.org/keywords/cache","display_name":"Cache","score":0.6517787575721741},{"id":"https://openalex.org/keywords/server","display_name":"Server","score":0.525313675403595},{"id":"https://openalex.org/keywords/focus","display_name":"Focus (optics)","score":0.5103315711021423},{"id":"https://openalex.org/keywords/service","display_name":"Service (business)","score":0.5006260871887207},{"id":"https://openalex.org/keywords/computer-security","display_name":"Computer security","score":0.4997138977050781},{"id":"https://openalex.org/keywords/trusted-third-party","display_name":"Trusted third party","score":0.46896612644195557},{"id":"https://openalex.org/keywords/mobile-device","display_name":"Mobile device","score":0.45619186758995056},{"id":"https://openalex.org/keywords/internet-privacy","display_name":"Internet privacy","score":0.42678651213645935},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.4261056184768677},{"id":"https://openalex.org/keywords/information-privacy","display_name":"Information privacy","score":0.4126838445663452},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.3815743923187256},{"id":"https://openalex.org/keywords/business","display_name":"Business","score":0.0933271050453186}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7947192192077637},{"id":"https://openalex.org/C155292070","wikidata":"https://www.wikidata.org/wiki/Q1198122","display_name":"Location-based service","level":2,"score":0.7205835580825806},{"id":"https://openalex.org/C115537543","wikidata":"https://www.wikidata.org/wiki/Q165596","display_name":"Cache","level":2,"score":0.6517787575721741},{"id":"https://openalex.org/C93996380","wikidata":"https://www.wikidata.org/wiki/Q44127","display_name":"Server","level":2,"score":0.525313675403595},{"id":"https://openalex.org/C192209626","wikidata":"https://www.wikidata.org/wiki/Q190909","display_name":"Focus (optics)","level":2,"score":0.5103315711021423},{"id":"https://openalex.org/C2780378061","wikidata":"https://www.wikidata.org/wiki/Q25351891","display_name":"Service (business)","level":2,"score":0.5006260871887207},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.4997138977050781},{"id":"https://openalex.org/C139089976","wikidata":"https://www.wikidata.org/wiki/Q2142273","display_name":"Trusted third party","level":2,"score":0.46896612644195557},{"id":"https://openalex.org/C186967261","wikidata":"https://www.wikidata.org/wiki/Q5082128","display_name":"Mobile device","level":2,"score":0.45619186758995056},{"id":"https://openalex.org/C108827166","wikidata":"https://www.wikidata.org/wiki/Q175975","display_name":"Internet privacy","level":1,"score":0.42678651213645935},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.4261056184768677},{"id":"https://openalex.org/C123201435","wikidata":"https://www.wikidata.org/wiki/Q456632","display_name":"Information privacy","level":2,"score":0.4126838445663452},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.3815743923187256},{"id":"https://openalex.org/C144133560","wikidata":"https://www.wikidata.org/wiki/Q4830453","display_name":"Business","level":0,"score":0.0933271050453186},{"id":"https://openalex.org/C162853370","wikidata":"https://www.wikidata.org/wiki/Q39809","display_name":"Marketing","level":1,"score":0.0},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","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}],"mesh":[{"descriptor_ui":"D000068997","descriptor_name":"Smartphone","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000068997","descriptor_name":"Smartphone","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000068997","descriptor_name":"Smartphone","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000465","descriptor_name":"Algorithms","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D000465","descriptor_name":"Algorithms","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D000465","descriptor_name":"Algorithms","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D018907","descriptor_name":"Privacy","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D018907","descriptor_name":"Privacy","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D018907","descriptor_name":"Privacy","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true}],"locations_count":5,"locations":[{"id":"doi:10.3390/s20164651","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s20164651","pdf_url":"https://www.mdpi.com/1424-8220/20/16/4651/pdf?version=1597752171","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},{"id":"pmid:32824808","is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/32824808","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors (Basel, Switzerland)","raw_type":null},{"id":"pmh:oai:doaj.org/article:4044313f7484498786433d4cabf0c29d","is_oa":true,"landing_page_url":"https://doaj.org/article/4044313f7484498786433d4cabf0c29d","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","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":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Sensors, Vol 20, Iss 16, p 4651 (2020)","raw_type":"article"},{"id":"pmh:oai:mdpi.com:/1424-8220/20/16/4651/","is_oa":true,"landing_page_url":"https://dx.doi.org/10.3390/s20164651","pdf_url":null,"source":{"id":"https://openalex.org/S4306400947","display_name":"MDPI (MDPI AG)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210097602","host_organization_name":"Multidisciplinary Digital Publishing Institute (Switzerland)","host_organization_lineage":["https://openalex.org/I4210097602"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Sensors; Volume 20; Issue 16; Pages: 4651","raw_type":"Text"},{"id":"pmh:oai:pubmedcentral.nih.gov:7472611","is_oa":true,"landing_page_url":"https://www.ncbi.nlm.nih.gov/pmc/articles/7472611","pdf_url":null,"source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Sensors (Basel)","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/s20164651","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s20164651","pdf_url":"https://www.mdpi.com/1424-8220/20/16/4651/pdf?version=1597752171","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/16","display_name":"Peace, Justice and strong institutions","score":0.4399999976158142}],"awards":[{"id":"https://openalex.org/G8815724042","display_name":null,"funder_award_id":"61502044","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W3066331332.pdf","grobid_xml":"https://content.openalex.org/works/W3066331332.grobid-xml"},"referenced_works_count":43,"referenced_works":["https://openalex.org/W1581319160","https://openalex.org/W1689932539","https://openalex.org/W1914411570","https://openalex.org/W1966517804","https://openalex.org/W1967321783","https://openalex.org/W1982590063","https://openalex.org/W2014306135","https://openalex.org/W2031560620","https://openalex.org/W2056773559","https://openalex.org/W2074149673","https://openalex.org/W2080507603","https://openalex.org/W2089959302","https://openalex.org/W2096899416","https://openalex.org/W2108977379","https://openalex.org/W2124377190","https://openalex.org/W2128800833","https://openalex.org/W2134167315","https://openalex.org/W2136228561","https://openalex.org/W2154851771","https://openalex.org/W2159992568","https://openalex.org/W2167756706","https://openalex.org/W2329695226","https://openalex.org/W2519614654","https://openalex.org/W2537158000","https://openalex.org/W2550564953","https://openalex.org/W2552516397","https://openalex.org/W2626104141","https://openalex.org/W2642179594","https://openalex.org/W2791895608","https://openalex.org/W2801912887","https://openalex.org/W2807844355","https://openalex.org/W2885734057","https://openalex.org/W2900467432","https://openalex.org/W2907935645","https://openalex.org/W2918043176","https://openalex.org/W2922089003","https://openalex.org/W2946153995","https://openalex.org/W2949193783","https://openalex.org/W3036381764","https://openalex.org/W3099830199","https://openalex.org/W6676413382","https://openalex.org/W6682911158","https://openalex.org/W6739467661"],"related_works":["https://openalex.org/W2625693598","https://openalex.org/W2587395609","https://openalex.org/W3180498664","https://openalex.org/W2972263771","https://openalex.org/W2782557850","https://openalex.org/W1965660590","https://openalex.org/W2734666515","https://openalex.org/W2898845157","https://openalex.org/W2072669749","https://openalex.org/W2642179594"],"abstract_inverted_index":{"Location-Based":[0],"Services":[1],"(LBSs)":[2],"are":[3,222],"playing":[4],"an":[5,181],"increasingly":[6],"important":[7],"role":[8],"in":[9,89,101,133,148],"people's":[10],"daily":[11],"activities":[12],"nowadays.":[13],"While":[14],"enjoying":[15],"the":[16,32,52,60,86,105,108,121,140,187,194,204,207,213,219,225,228,230,244,249,259,276],"convenience":[17],"provided":[18],"by":[19,126],"LBSs,":[20,169],"users":[21,100,128,236],"may":[22,76],"lose":[23],"privacy":[24,114,117,232,253,261,287],"since":[25],"they":[26],"report":[27],"their":[28,270],"personal":[29],"information":[30],"to":[31,42,154,174,178,212,224,239,243,267],"untrusted":[33],"LBS":[34,188,214,226,245],"server.":[35,164,215],"Although":[36],"many":[37,64],"approaches":[38,66],"have":[39,238],"been":[40],"proposed":[41,109,277],"preserve":[43],"users'":[44,283],"privacy,":[45,55],"most":[46],"of":[47,82,123,209,296],"them":[48],"just":[49],"focus":[50],"on":[51,69],"user's":[53,231,260],"location":[54,113,284],"but":[56],"do":[57],"not":[58],"consider":[59],"query":[61,116,173,286],"privacy.":[62,271],"Moreover,":[63],"existing":[65],"rely":[67],"heavily":[68],"a":[70,79,94,134,146,161,166,172,251,289],"trusted":[71],"third-party":[72],"(TTP)":[73],"server,":[74,227,246],"which":[75],"suffer":[77],"from":[78,104,198],"single":[80],"point":[81],"failure.":[83],"To":[84,235],"solve":[85],"problems":[87],"above,":[88],"this":[90,202],"paper":[91],"we":[92,247],"propose":[93],"Cache-Based":[95],"Privacy-Preserving":[96],"(CBPP)":[97],"solution":[98,111,279],"for":[99,180],"LBSs.":[102],"Different":[103],"previous":[106],"approaches,":[107],"CBPP":[110,141,278],"protects":[112],"and":[115,158,285,293],"simultaneously,":[118],"while":[119],"avoiding":[120],"problem":[122],"TTP":[124,163],"server":[125,189],"having":[127],"collaborating":[129],"with":[130,288],"each":[131,143],"other":[132],"mobile":[135,150],"peer-to-peer":[136],"(P2P)":[137],"environment.":[138],"In":[139,201],"solution,":[142],"user":[144,167,184,205],"keeps":[145],"buffer":[147],"his":[149,175,199],"device":[151],"(e.g.,":[152],"smartphone)":[153],"record":[155],"service":[156,196],"data":[157,197],"acts":[159],"as":[160],"micro":[162],"When":[165],"needs":[168],"he":[170,191],"sends":[171],"neighbors":[176],"first":[177],"seek":[179],"answer.":[182],"The":[183],"only":[185],"contacts":[186],"when":[190],"cannot":[192],"obtain":[193],"required":[195],"neighbors.":[200],"way,":[203],"reduces":[206],"number":[208],"queries":[210,221,242],"sent":[211],"We":[216],"argue":[217],"that":[218,256,275],"fewer":[220],"submitted":[223],"less":[229],"is":[233],"exposed.":[234],"who":[237],"send":[240],"live":[241],"employ":[248],"l-diversity,":[250],"powerful":[252],"protection":[254],"definition":[255],"can":[257,280],"guarantee":[258],"against":[262],"attackers":[263],"using":[264],"background":[265],"knowledge,":[266],"further":[268],"protect":[269,282],"Evaluation":[272],"results":[273],"show":[274],"effectively":[281],"lower":[290],"communication":[291],"cost":[292],"better":[294],"quality":[295],"service.":[297]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":6},{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":7},{"year":2021,"cited_by_count":2}],"updated_date":"2026-07-22T07:51:19.307946","created_date":"2025-10-10T00:00:00"}