Patents by Inventor Yrjo Keranen

Yrjo Keranen 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).

  • Network-based method and system for determining a location of user equipment in CDMA networks
    Patent number: 7254401
    Abstract: A method and system for determining a location of a user equipment using RTT measurements from a connected node B and RTT measurement of other node Bs which are not connected to the user equipment. The radio network controller of a network measures RTT of a connected node Bs and then measures RTT of non connected node Bs. Based on the RTT measurement, the distances of the user equipment from each node B is determined. Circles having radii equal to the distances of the user equipment from the nodes are used to determine the user equipment location.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: August 7, 2007
    Assignee: Nokia Corporation
    Inventors: Yrjö Keränen, Timo Viero
  • Receiving spread spectrum signal in radio system
    Publication number: 20050018758
    Abstract: The invention relates to a rake receiver in a radio system comprising means for receiving a spread spectrum signal in a radio system, a correlator for forming an impulse response that represents, on the time domain, delay components of a user signal contained in the spread spectrum signal. The rake receiver comprises means for measuring, from the formed impulse response, a delay spread of delay components that are significant for reception of the user signal, and means for determining the length of a measuring window of one or more correlators by means of the measured delay spread of the user signal.
    Type: Application
    Filed: August 13, 2004
    Publication date: January 27, 2005
    Inventors: Yrjo Keranen, Timo Viero
  • Method to calculate true round trip propagation delay and user equipment location in WCDMA/UTRAN
    Patent number: 6681099
    Abstract: A method of determining the location of a user equipment includes determining a round trip time for downlink from at least three nodes to a user equipment, determining the transmission timing delay at the user equipment for the round trip time of each of the three nodes, and determining a distance from each of the at least three nodes using the round trip time and the transmission timing delay.
    Type: Grant
    Filed: May 15, 2000
    Date of Patent: January 20, 2004
    Assignee: Nokia Networks Oy
    Inventors: Yrjo Keranen, Timo Viero
  • Network-based method and system for determining a location of user equipment in CDMA networks
    Publication number: 20020094820
    Abstract: A method and system for determining a location of a user equipment using RTT measurements from a connected node B and RTT measurement of other node Bs which are not connected to the user equipment. The radio network controller of a network measures RTT of a connected node Bs and then measures RTT of non connected node Bs. Based on the RTT measurement, the distances of the user equipment from each node B is determined. Circles having radii equal to the distances of the user equipment from the nodes are used to determine the user equipment location.
    Type: Application
    Filed: December 19, 2000
    Publication date: July 18, 2002
    Applicant: Nokia Networks OY
    Inventors: Yrjo Keranen, Timo Viero