Patents by Inventor Jim Ragsdale

Jim Ragsdale 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).

  • Packet control channel feedback support for contention and reservation based access
    Patent number: 6577618
    Abstract: A method is disclosed for improving the efficiency of the packet data channel by interrupting transmissions from or to a first mobile station so as to allow a short message to be communicated between the communication system and a different mobile station. The packet channel feedback information includes several flags: Received/Not Received (R/N); Partial Echo (PE); and Partial Echo Qualifier (PEQ). The PEQ allows the communication system to interrupt the transmission to one mobile station to send a short message to another mobile station. By setting the PEQ to various values, a mobile station can determine whether subchannel ownership has been temporarily interrupted and reassigned to another station.
    Type: Grant
    Filed: February 5, 1997
    Date of Patent: June 10, 2003
    Assignee: Telefonaktiebolaget L.M. Ericsson (Publ)
    Inventors: John Diachina, Johan Larsson, Alex K. Raith, Jim Ragsdale
  • PACKET CONTROL CHANNEL FEEDBACK SUPPORT FOR CONTENTION AND RESERVATION BASED ACCESS
    Publication number: 20010019542
    Abstract: A method is disclosed for improving the efficiency of the packet data channel by providing means for interrupting transmissions from or to a first mobile station so as to allow a short message to be communicated between the communication system and a different mobile station. The packet channel feedback information includes several flags: Received/Not Received (R/N); Partial Echo (PE); and Partial Echo Qualifier (PEQ). The PEQ allows the communication system to interrupt the transmission to one mobile station to send a short message to another mobile station. By setting the PEQ to various values, a mobile station can determine whether subchannel ownership has been temporarily interrupted and reassigned to another station.
    Type: Application
    Filed: February 5, 1997
    Publication date: September 6, 2001
    Inventors: JOHN DIACHINA, JOHAN LARSSON, ALEX K. RAITH, JIM RAGSDALE