Patents by Inventor Lionel Frederic Ulmer

Lionel Frederic Ulmer 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).

  • GPRS mobile paging method
    Patent number: 6728537
    Abstract: The invention concerns a method of scheduling the time of transmission of one or more GPRS paging blocks in a cell of a cellular communications system, the paging blocks initiating communication to a mobile terminal in a cellular communications system, comprising calculating the transmission time of the paging block, or the transmission times of the paging blocks, in dependence on: (i) the number N determining which control channel carries the paging blocks of a given terminal; (ii) the number M of GPRS paging blocks on the control channel; (iii) the number KC of control channels in the cell of the cellular communications system; and (iv) the International Mobile Subscriber Identity (IMSI) number of the mobile terminal. The scheduling of the time of transmission of the one or more GPRS paging blocks in the cell of the cellular communications system may even out the distribution over time of the transmissions.
    Type: Grant
    Filed: January 11, 2000
    Date of Patent: April 27, 2004
    Assignee: Motorola, Inc.
    Inventors: Ouelid Abdesselem, Lionel Frederic Ulmer, Francois Deparis