Patent · US Active

Preserving privacy by concealing location information with a pseudo-random permutation process

US9955346B2 · kind B2 · utility

2Cited by

0References

13Claims

0Family size

Assignee

NEC CORPORATION · JP

Inventors

Jens-Matthias Bohli · Leimen, DE
Ghassan Karame · Heidelberg, DE
Wenting Li · Longbeilingcun, CN
Dan Dobre · Kitchener, CA

Key dates

Filing date	Dec 5, 2013
Grant date	Apr 24, 2018
Priority date	—
Expiry date	Jan 11, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH04W4/021
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method for preserving privacy within a communication system, wherein a location-based service concerning an area of interest is provided for at least one user by a database server and wherein location information represented by coordinates of objects and/or users and/or areas and/or queries, made to the location-based service, is concealed, includes concealing the location information by transforming coordinates by first splitting the area of interest up in tiles for providing at least one tiling of the area of interest, and then permuting the tiles by a pseudo-random permutation process.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.