Patents by Inventor Sami Yliharjii

Sami Yliharjii 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 for improving the performance of USSD transfer in a cellular communications system
    Patent number: 6834196
    Abstract: In the GSM and similar systems, USSD (Unstructured Supplementary Service Data) transfer takes place on a fast channel if a mobile station is involved in that call, and otherwise on a slow channel. The USSD transfer can be switched to the fast channel by determining the amount of data to be transmitted. If the amount of data to be transmitted is likely to exceed a predetermined threshold, and if the mobile station is not involved in a call, a call attempt is initiated for switching the USSD transfer to the fast channel.
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: December 21, 2004
    Assignee: Nokia Networks Oy
    Inventors: Teemu Tarnanen, Sami Yliharjii