A Novel Pseudonym Changing Scheme for Location Privacy Preservation in Sparse Traffic Areas

Large number of schemes have been proposed to deal with location privacy preservation in VANETs. One the most popular ways preserve is pseudonym changing, which includes mix-zone, silent zone, mix-context zone and trigger-based schemes. The pseudonyms must be changed after a specific interval privacy. All these require vehicles part dense traffic order change pseudonym. Although changing are not computationally expensive ensure preservation, huge drawback that suitable only for areas, they do apply sparse areas. Another prevent from colluding attacks. In this research, we propose scheme, called LPSA (Location Privacy Sparse Areas), allows work areas where dense. A area density lower as compared silent-zone zones. does private changing. This makes it both For utilize zones, while modify scheme also provides protection Our results show better traceability, average anonymity set size, per trace confusion