Patents by Inventor Jianliang Xu

Jianliang Xu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9973514
    Abstract: An invention relates to method and apparatus of a location assurance system and particularly, although not exclusively, the present invention also relates to method and apparatus for assuring location data integrity with minimum location disclosure. The present invention also relates to method and apparatus for assuring location data integrity with minimum location disclosure with protocols to authenticate both spatial and spatio-temporal predicates.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: May 15, 2018
    Assignee: Hong Kong Baptist University
    Inventors: Haibo Hu, Qian Chen, Jianliang Xu
  • Publication number: 20170012996
    Abstract: An invention relates to method and apparatus of a location assurance system and particularly, although not exclusively, the present invention also relates to method and apparatus for assuring location data integrity with minimum location disclosure. The present invention also relates to method and apparatus for assuring location data integrity with minimum location disclosure with protocols to authenticate both spatial and spatio-temporal predicates.
    Type: Application
    Filed: October 26, 2015
    Publication date: January 12, 2017
    Inventors: Haibo Hu, Qian Chen, Jianliang Xu
  • Patent number: 9351116
    Abstract: A method for privacy-preserving proximity detection comprising a grid-and-hashing paradigm, an optimal grid overlay and multi-level grids, which increases the detection accuracy while saving the wireless bandwidth. Furthermore, the present invention also provided a client-side location update scheme and the server-side update handling procedure for continuous proximity detection. The present invention is efficient and scalable under various system parameters and user moving speeds, in mobile geo-social networks.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: May 24, 2016
    Assignee: Hong Kong Baptist University
    Inventors: Jianliang Xu, Haibo Hu
  • Patent number: 9043927
    Abstract: A method and an apparatus for authenticating location-based services without compromising location privacy, which comprises a comprehensive solution that preserves unconditional location privacy when authenticating either range queries using three authentication schemes for R-tree and grid-file index, together with two optimization techniques, or k-nearest neighbor queries using two authentication schemes for R-tree and Voronoi Diagram index.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: May 26, 2015
    Assignee: Neo Mechanic Limited
    Inventors: Haibo Hu, Jianliang Xu, Qian Chen
  • Publication number: 20140357299
    Abstract: A method for privacy-preserving proximity detection comprising a grid-and-hashing paradigm, an optimal grid overlay and multi-level grids, which increases the detection accuracy while saving the wireless bandwidth. Furthermore, the present invention also provided a client-side location update scheme and the server-side update handling procedure for continuous proximity detection. The present invention is efficient and scalable under various system parameters and user moving speeds, in mobile geo-social networks.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 4, 2014
    Applicant: Hong Kong Baptist University
    Inventors: Jianliang Xu, Haibo Hu
  • Publication number: 20140090023
    Abstract: A method and an apparatus for authenticating location-based services without compromising location privacy, which comprises a comprehensive solution that preserves unconditional location privacy when authenticating either range queries using three authentication schemes for R-tree and grid-file index, together with two optimization techniques, or k-nearest neighbor queries using two authentication schemes for R-tree and Voronoi Diagram index.
    Type: Application
    Filed: February 19, 2013
    Publication date: March 27, 2014
    Applicant: Hong Kong Baptist University
    Inventors: Haibo Hu, Jianliang Xu, Qian Chen