Patents by Inventor Jussi Kähtävä

Jussi Kähtävä 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).

  • Patent number: 8483141
    Abstract: Several mobile station identifiers are allocated to one mobile station, one for each of a plurality of possible signalling channel structures, parameters, or both. When receiving the signalling channels, the mobile station searches for all identifiers allocated for it in the received signalling channels. When it finds one that matches, it may for instance check a mapping table (agreed at the connection setup between mobile station and the network by RRC signalling) to determine what this identifier means. The signalling channel structure, parameters, or both, used in the transmission may be implicitly or explicitly indicated by the identifier. The mobile station (User Equipment) should monitor the signalling channels in the normal way. Instead of looking for only one identifier, however, the mobile station should monitor several identifiers belonging to it.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: July 9, 2013
    Assignee: Nokia Corporation
    Inventors: Esa Malkamäki, Jussi Kähtävä, Kari Rikkinen
  • Patent number: 6735180
    Abstract: A method of sending feedback information in a fast physical layer hybrid automatic repeat request (HARQ) for frequency division duplex communications that form an overall wireless communication system is described in which the received packets are acknowledged by transmitting feedback data to the sender, wherein the acknowledgement comprises the reservation of obtaining a plurality of slots in the uplink/downlink dedicated channel radio frame for the feedback data alone. It is also directed to the transmission of feedback data used in specified slots within each radio frame, wherein the first slot used is based upon the time offset between uplink and downlink channels, as well as based upon the time required for de-interleaving, de-ratematching, decoding and error checking. In an alternative embodiment, the method uses dedicated physical control channel (DPCCH) bits in at least some of the slots for transmitting such feedback data to the sender.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: May 11, 2004
    Assignee: Nokia Mobile Phones, Ltd.
    Inventors: Esa Malkamäki, Deepak Mathew, Kari Pehkonen, Jussi Kähtävä