Patents by Inventor Dan ROOS

Dan ROOS 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).

  • Over-the-air testing of an active antenna system
    Patent number: 12375189
    Abstract: There is provided mechanisms for OTA testing of an AAS of an EUT. A method is performed by a network node. The method includes obtaining definition of a test signal to be transmitted or received by the EUT in accordance with a time/frequency resource grid. The method includes applying first beamforming weights to first selected resource elements of the time/frequency resource grid that give first beam directions according to a first type of configuration for first OTA testing of the AAS. The method includes applying second beamforming weights to second selected resource elements of the time/frequency resource grid that give second beam directions according to a second type of configuration for second OTA testing of the AAS. The method includes initiating transmission or reception of the test signal over the AAS using the time/frequency resource grid.
    Type: Grant
    Filed: March 16, 2021
    Date of Patent: July 29, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Henrik Hallenberg, Erik Nilsson, Christian Heina, Dan Roos, Torbjörn Elfström
  • OVER-THE-AIR TESTING OF AN ACTIVE ANTENNA SYSTEM
    Publication number: 20240322917
    Abstract: There is provided mechanisms for OTA testing of an AAS of an EUT. A method is performed by a network node. The method includes obtaining definition of a test signal to be transmitted or received by the EUT in accordance with a time/frequency resource grid. The method includes applying first beamforming weights to first selected resource elements of the time/frequency resource grid that give first beam directions according to a first type of configuration for first OTA testing of the AAS. The method includes applying second beamforming weights to second selected resource elements of the time/frequency resource grid that give second beam directions according to a second type of configuration for second OTA testing of the AAS. The method includes initiating transmission or reception of the test signal over the AAS using the time/frequency resource grid.
    Type: Application
    Filed: March 16, 2021
    Publication date: September 26, 2024
    Inventors: Henrik HALLENBERG, Erik NILSSON, Christian HEINA, Dan ROOS, Torbjörn ELFSTRÖM