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COLLABORATIVE CACHING FOR IMPLEMENTING A LOCATION-PRIVACY AWARE LBS ON A MANET

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dc.creatorRUDYARD GUY FUSTER FUSTER
dc.creatorCLAUDIO ORLANDO GUTIÉRREZ SOTO
dc.date2024
dc.date.accessioned2025-01-10T15:53:42Z
dc.date.available2025-01-10T15:53:42Z
dc.date.issued2024
dc.description.abstractTHIS PAPER ADDRESSES THE CHALLENGE OF PRESERVING USER PRIVACY IN LOCATION-BASED SERVICES (LBSS) BY PROPOSING A NOVEL, COMPLEMENTARY APPROACH TO EXISTING PRIVACY-PRESERVING TECHNIQUES SUCH AS K-ANONYMITY AND L-DIVERSITY. OUR APPROACH IMPLEMENTS COLLABORATIVE CACHING STRATEGIES WITHIN A MOBILE AD HOC NETWORK (MANET), EXPLOITING THE GEOGRAPHIC OF LOCATION-BASED QUERIES (LBQS) TO REDUCE DATA EXPOSURE TO UNTRUSTED LBS SERVERS. UNLIKE EXISTING APPROACHES THAT RELY ON CENTRALIZED SERVERS OR STATIONARY INFRASTRUCTURE, OUR SOLUTION FACILITATES DIRECT DATA EXCHANGE BETWEEN USERS? DEVICES, PROVIDING AN ADDITIONAL LAYER OF PRIVACY PROTECTION. WE INTRODUCE A NEW PRIVACY ENTROPY-BASED METRIC CALLED ACCUMULATED PRIVACY LOSS (APL) TO QUANTIFY THE PRIVACY LOSS INCURRED WHEN ACCESSING EITHER THE LBS OR OUR PROPOSED SYSTEM. OUR APPROACH IMPLEMENTS A TWO-TIER CACHING STRATEGY: LOCAL CACHING MAINTAINED BY EACH USER AND NEIGHBOR CACHING BASED ON PROXIMITY. THIS STRATEGY NOT ONLY REDUCES THE NUMBER OF QUERIES TO THE LBS SERVER BUT ALSO SIGNIFICANTLY ENHANCES USER PRIVACY BY MINIMIZING THE EXPOSURE OF LOCATION DATA TO CENTRALIZED ENTITIES. EMPIRICAL RESULTS DEMONSTRATE THAT WHILE OUR COLLABORATIVE CACHING SYSTEM INCURS SOME COMMUNICATION COSTS, IT SIGNIFICANTLY MITIGATES REDUNDANT DATA AMONG USER CACHES AND REDUCES THE NEED TO ACCESS POTENTIALLY PRIVACY-COMPROMISING LBS SERVERS. OUR FINDINGS SHOW A 40% REDUCTION IN LBS QUERIES, A 64% DECREASE IN DATA REDUNDANCY WITHIN CELLS, AND A 31% REDUCTION IN ACCUMULATED PRIVACY LOSS COMPARED TO BASELINE METHODS. IN ADDITION, WE ANALYZE THE IMPACT OF DATA OBSOLESCENCE ON CACHE PERFORMANCE AND PRIVACY LOSS, PROPOSING MECHANISMS FOR MAINTAINING THE RELEVANCE AND ACCURACY OF CACHED DATA. THIS WORK CONTRIBUTES TO THE FIELD OF PRIVACY-PRESERVING LBSS BY PROVIDING A DECENTRALIZED, USER-CENTRIC APPROACH THAT IMPROVES BOTH CACHE REDUNDANCY AND PRIVACY PROTECTION, PARTICULARLY IN SCENARIOS WHERE CENTRAL INFRASTRUCTURE IS UNREACHABLE OR UNTRUSTED.
dc.formatapplication/pdf
dc.identifier.doi10.3390/app142210480
dc.identifier.issn2076-3417
dc.identifier.issn2076-3417
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/14151
dc.languagespa
dc.publisherApplied Sciences-Basel
dc.relation.uri10.3390/app142210480
dc.rightsOPEN ACCESS
dc.subjectPrivacy loss
dc.subjectLocation-privacy-aware LBS
dc.subjectCollaborative caching
dc.subjectMANET
dc.titleCOLLABORATIVE CACHING FOR IMPLEMENTING A LOCATION-PRIVACY AWARE LBS ON A MANET
dc.typeARTÍCULO
dspace.entity.typePublication
oaire.licenseConditionCC BY 4.0
ubb.EstadoPUBLICADA
ubb.Otra ReparticionDEPARTAMENTO DE SISTEMAS DE INFORMACION
ubb.SedeCONCEPCIÓN
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