Patents by Inventor Luis Alonso Zárate

Luis Alonso Zárate 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 medium access control in a wireless broadband system with multiple-input multiple-output or multiple-input single-output technology with multiuser capabilities
    Patent number: 8792577
    Abstract: Method and apparatus for medium access control in a wireless broadband system with multiuser MIMO/MISO technology comprising the steps of a transmitter (Tx) broadcasting a polling message (1) to all the users (Rx1 . . . Rxi . . . RXN) associated to said transmitter (Tx); the users answering with reply messages (2) during a time slot (61 . . . 6m) randomly selected from a plurality of time slots in which a period of time dedicated to sending reply messages (5) is divided; the transmitter (Tx) performing a scheduling and transmission of data (3); and scheduled users sending Acknowledgment messages (4). Preferably, only users which measure a Signal to Noise plus Interference Ratio over a pre-defined threshold for a transmission beam send reply messages (2).
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: July 29, 2014
    Assignee: Fundacio Privada Centre Tecnologic de Telecomunicions de Catalunya
    Inventors: Christos Verikoukis, Nizar Zorba Barah, Elli Kartsaki, Luis Alonso Zárate
  • METHOD AND APPARATUS FOR MEDIUM ACCESS CONTROL IN A WIRELESS BROADBAND SYSTEM WITH MULTIPLE-INPUT MULTIPLE-OUTPUT OR MULTIPLE-INPUT SINGLE-OUTPUT TECHNOLOGY WITH MULTIUSER CAPABILITIES
    Publication number: 20120082200
    Abstract: Method and apparatus for medium access control in a wireless broadband system with multiuser MIMO/MISO technology comprising the steps of a transmitter (Tx) broadcasting a polling message (1) to all the users (Rx1 . . . Rxi . . . RXN) associated to said transmitter (Tx); the users answering with reply messages (2) during a time slot (61 . . . 6m) randomly selected from a plurality of time slots in which a period of time dedicated to sending reply messages (5) is divided; the transmitter (Tx) performing a scheduling and transmission of data (3); and scheduled users sending Acknowledgment messages (4). Preferably, only users which measure a Signal to Noise plus Interference Ratio over a pre-defined threshold for a transmission beam send reply messages (2).
    Type: Application
    Filed: June 12, 2009
    Publication date: April 5, 2012
    Applicant: FUNDACIO PRIVADA CENTRE TECNOLOGIC DE TELECOMUNICACIONS DE CATALUNYA
    Inventors: Christos Verikoukis, Nizar Zorba Barah, Elli Kartsaki, Luis Alonso Zárate