Patents by Inventor Ali Khalajmehrabadi

Ali Khalajmehrabadi 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).

  • Systems, methods, and computer programs for wireless local area network localization
    Patent number: 11212018
    Abstract: Disclosed are various embodiments that enable the identification of the location of a computing device based on radio data. A radio map can be identified for an area. The computing device can measure signal strengths to reference points. The signal strengths can be compared to the radio map. The computing device can determine its location based on the comparison of the signal strengths to the radio map.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: December 28, 2021
    Assignee: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: Ali Khalajmehrabadi, Nikolaos Gatsis, David Akopian
  • Method and system for detecting and mitigating time synchronization attacks of global positioning system (GPS) receivers
    Patent number: 11105932
    Abstract: A system and method are provided for detecting and estimating time synchronization attacks (TSAs) on Global Positioning System (GPS) receivers. The system and method can be implemented to address gaps in the known or proposed TSA detection solutions. In particular, the system and method can be implemented to provide a TSA countermeasure solution that: 1) provides a comprehensive countermeasure against different types of TSAs; 2) allows the GPS receiver to continue its normal operation, which is especially beneficial in Phasor Measurement Unit (PMU) applications where the network's normal operation cannot be interrupted; in other words, the solution not only detects TSAs, but also mitigates their effects so that the network can continue its normal operation; and 3) is relatively simple and capable of being integrated with current GPS receivers without having to alter the circuitry of the GSP receivers.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: August 31, 2021
    Assignee: Board of Regents, The University of Texas System
    Inventors: Ali Khalajmehrabadi, Nikolaos Gatsis, David Akopian, Ahmad Fayez Taha
  • SYSTEMS, METHODS, AND COMPUTER PROGRAMS FOR WIRELESS LOCAL AREA NETWORK LOCALIZATION
    Publication number: 20200204275
    Abstract: Disclosed are various embodiments that enable the identification of the location of a computing device based on radio data. A radio map can be identified for an area. The computing device can measure signal strengths to reference points. The signal strengths can be compared to the radio map. The computing device can determine its location based on the comparison of the signal strengths to the radio map.
    Type: Application
    Filed: November 26, 2019
    Publication date: June 25, 2020
    Applicant: Boards of Regents, The University of Texas System
    Inventors: Ali Khalajmehrabadi, Nikolaos Gatsis, David Akopian
  • Systems, methods, and computer programs for wireless local area network localization
    Patent number: 10511392
    Abstract: Disclosed are various embodiments that enable the identification of the location of a computing device based on radio data. A radio map can be identified for an area. The computing device can measure signal strengths to reference points. The signal strengths can be compared to the radio map. The computing device can determine its location based on the comparison of the signal strengths to the radio map.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: December 17, 2019
    Assignee: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: Ali Khalajmehrabadi, Nikolaos Gatsis, David Akopian
  • METHOD AND SYSTEM FOR DETECTING AND MITIGATING TIME SYNCHRONIZATION ATTACKS OF GLOBAL POSITIONING SYSTEM (GPS) RECEIVERS
    Publication number: 20190187294
    Abstract: A system and method are provided for detecting and estimating time synchronization attacks (TSAs) on Global Positioning System (GPS) receivers. The system and method can be implemented to address gaps in the known or proposed TSA detection solutions. In particular, the system and method can be implemented to provide a TSA countermeasure solution that: 1) provides a comprehensive countermeasure against different types of TSAs; 2) allows the GPS receiver to continue its normal operation, which is especially beneficial in Phasor Measurement Unit (PMU) applications where the network's normal operation cannot be interrupted; in other words, the solution not only detects TSAs, but also mitigates their effects so that the network can continue its normal operation; and 3) is relatively simple and capable of being integrated with current GPS receivers without having to alter the circuitry of the GSP receivers.
    Type: Application
    Filed: December 20, 2018
    Publication date: June 20, 2019
    Applicant: Board of Regents, The University of Texas System
    Inventors: Ali Khalajmehrabadi, Nikolaos Gatsis, David Akopian, Ahmad Fayez Taha
  • SYSTEMS, METHODS, AND COMPUTER PROGRAMS FOR WIRELESS LOCAL AREA NETWORK LOCALIZATION
    Publication number: 20180123708
    Abstract: Disclosed are various embodiments that enable the identification of the location of a computing device based on radio data. A radio map can be identified for an area. The computing device can measure signal strengths to reference points. The signal strengths can be compared to the radio map. The computing device can determine its location based on the comparison of the signal strengths to the radio map.
    Type: Application
    Filed: October 16, 2017
    Publication date: May 3, 2018
    Applicant: Board of Regents, The University of Texas System
    Inventors: Ali Khalajmehrabadi, Nikolaos Gatsis, David Akopian