Patents by Inventor Igor M. GUERREIRO

Igor M. GUERREIRO 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).

  • Establishing a communication link between user equipments
    Patent number: 9847857
    Abstract: Methods and apparatus for establishing a communication link between a first user equipment and at least one other user equipment in a radio communication cell using a radio frequency spectrum divided into a plurality of channels. The first user equipment comprises a tuner configured to tune a communication unit to channels of a channel sequence vector in order. The channel sequence vector comprises at least a partial vectorization of a symmetric Toeplitz matrix formed from a set of the plurality of channels. The communication unit is configured, at each channel, to receive link data for establishing a communication link with the at least one other user equipment. A link establisher is configured to establish a communication link with the at least one other user equipment over the tuned channel if the link data is received.
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: December 19, 2017
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Igor M. Guerreiro, Francisco Rodrigo Porto Cavalcanti, Tarcisio F. Maciel, Francisco H. C. Neto
  • ESTABLISHING A COMMUNICATION LINK BETWEEN USER EQUIPMENTS
    Publication number: 20160134396
    Abstract: Methods and apparatus for establishing a communication link between a first user equipment and at least one other user equipment in a radio communication cell using a radio frequency spectrum divided into a plurality of channels. The first user equipment comprises a tuner configured to tune a communication unit to channels of a channel sequence vector in order. The channel sequence vector comprises at least a partial vectorization of a symmetric Toeplitz matrix formed from a set of the plurality of channels. The communication unit is configured, at each channel, to receive link data for establishing a communication link with the at least one other user equipment. A link establisher is configured to establish a communication link with the at least one other user equipment over the tuned channel if the link data is received.
    Type: Application
    Filed: January 22, 2014
    Publication date: May 12, 2016
    Inventors: Igor M. GUERREIRO, Francisco Rodrigo Porto CAVALCANTI, Tarcisio F. MACIEL, Francisco H.C. NETO