Patents by Inventor Hakan E. Axelsson

Hakan E. Axelsson 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).

  • Bi-directional RLC non-persistent mode for low delay services
    Patent number: 7848287
    Abstract: The transfer delay QoS attribute for delay-sensitive applications is enforced in radio access networks by determining the ongoing validity of incomplete data packets based on a maximum data transfer delay constraint. According to one embodiment, upper-layer packet data units (PDUs) associated with an application having a maximum data transfer delay constraint are transferred by starting a timer responsive to initial transmission of an RLC data block associated with one or more of the upper-layer PDUs. The timer is initialized to a timer value that is based on the maximum data transfer delay constraint. The RLC data block is retransmitted responsive to a received message indicating reception of the RLC data block is unacknowledged so long as the timer has not expired. The RLC data block is deleted from memory responsive to the timer expiring or a received message indicating reception of the RLC data block is acknowledged.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: December 7, 2010
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: John W. Diachina, Håkan E Axelsson, Paul Schliwa-Bertling
  • Bi-Directional RLC Non-Persistent Mode for Low Delay Services
    Publication number: 20070268861
    Abstract: The transfer delay QoS attribute for delay-sensitive applications is enforced in radio access networks by determining the ongoing validity of incomplete data packets based on a maximum data transfer delay constraint. According to one embodiment, upper-layer packet data units (PDUs) associated with an application having a maximum data transfer delay constraint are transferred by starting a timer responsive to initial transmission of an RLC data block associated with one or more of the upper-layer PDUs. The timer is initialized to a timer value that is based on the maximum data transfer delay constraint. The RLC data block is retransmitted responsive to a received message indicating reception of the RLC data block is unacknowledged so long as the timer has not expired. The RLC data block is deleted from memory responsive to the timer expiring or a received message indicating reception of the RLC data block is acknowledged.
    Type: Application
    Filed: March 9, 2007
    Publication date: November 22, 2007
    Inventors: John W. Diachina, Hakan E. Axelsson, Paul Schliwa-Bertling