Patents by Inventor Keith Richard Baldwin

Keith Richard Baldwin 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).

  • Method and apparatus for antenna mapping selection in MIMO-OFDM wireless networks
    Patent number: 9178580
    Abstract: A method and apparatus for selecting an antenna mapping in multiple-in/multiple-out (MIMO) enabled wireless communication networks. A candidate set of currently available antenna mappings is determined based upon measured long term channel conditions. An antenna mapping is selected from the candidate set, and the mapping is calibrated with a selected antenna mapping of a receiving wireless transmit/receive unit (WTRU). When the selected mappings are calibrated, packet data transmission begins. In an alternative embodiment, a calibration training frame (CTF) is used to calibrate multiple antenna mappings simultaneously or sequentially. Also disclosed are physical layer and medium access control layer frame formats for implementing antenna mapping selection according to the invention.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: November 3, 2015
    Assignee: InterDigital Technology Corporation
    Inventors: Inhyok Cha, Eldad M. Zeira, Keith Richard Baldwin
  • METHOD AND APPARATUS FOR ANTENNA MAPPING SELECTION IN MIMO-OFDM WIRELESS NETWORKS
    Publication number: 20130294537
    Abstract: A method and apparatus for selecting an antenna mapping in multiple-in/multiple-out (MIMO) enabled wireless communication networks. A candidate set of currently available antenna mappings is determined based upon measured long term channel conditions. An antenna mapping is selected from the candidate set, and the mapping is calibrated with a selected antenna mapping of a receiving wireless transmit/receive unit (WTRU). When the selected mappings are calibrated, packet data transmission begins. In an alternative embodiment, a calibration training frame (CTF) is used to calibrate multiple antenna mappings simultaneously or sequentially. Also disclosed are physical layer and medium access control layer frame formats for implementing antenna mapping selection according to the invention.
    Type: Application
    Filed: July 8, 2013
    Publication date: November 7, 2013
    Inventors: Inhyok CHA, Eldad M. ZEIRA, Keith Richard BALDWIN
  • Method and apparatus for antenna mapping selection in MIMO-OFDM wireless networks
    Patent number: 8483200
    Abstract: A method and apparatus for selecting an antenna mapping in multiple-in/multiple-out (MIMO) enabled wireless communication networks. A candidate set of currently available antenna mappings is determined based upon measured long term channel conditions. An antenna mapping is selected from the candidate set, and the mapping is calibrated with a selected antenna mapping of a receiving wireless transmit/receive unit (WTRU). When the selected mappings are calibrated, packet data transmission begins. In an alternative embodiment, a calibration training frame (CTF) is used to calibrate multiple antenna mappings simultaneously or sequentially. Also disclosed are physical layer and medium access control layer frame formats for implementing antenna mapping selection according to the invention.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: July 9, 2013
    Assignee: Interdigital Technology Corporation
    Inventors: Inhyok Cha, Eldad Zeira, Keith Richard Baldwin