Patents by Inventor Gunnar Monell

Gunnar Monell 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: 6654608
    Abstract: Methods and apparatus for controlling the initial transmit power from a base station to a mobile station at call set-up and call handoff. The initial transmit power from a base station during a call set-up can be reduced from the conventional full power level by a sum of the hysteresis value for the cell which is handing off the mobile station and the hysteresis value for the cell which is receiving the mobile station. When a mobile station initiates or receives a call, the initial transmit power from a base station to the mobile station is reduced from the full power level by the hysteresis value for the hysteresis zone which surrounds the cell in which call set-up is to occur. The reduction in the initial power levels reduces interference caused to surrounding cells at the initiation of a call set-up or call handoff.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: November 25, 2003
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Gunnar Monell, Thomas Östman
  • Patent number: 6529494
    Abstract: In a time division multiple access (TDMA) based cellular radio telecommunications system, system performance is improved by adjusting the transmit power associated with certain downlink signals during a corresponding timeslot, and in such a way that the power adjustment resembles that of a typical fading event, in terms of both time of occurrence and rate of occurrence (e.g., dB per msec). During the same timeslot, the transmit power associated with other downlink signals is maintained at a substantially constant level. More particularly, the transmit power associated with a downlink signal is maintained at a substantially constant level if the power level does not sufficiently provide adequate signal quality for the corresponding mobile station in the presence of fading. In contrast, the transmit power associated with a downlink signal may be adjusted (e.g.
    Type: Grant
    Filed: September 21, 1999
    Date of Patent: March 4, 2003
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Thomas O{umlaut over (s)}tman, Gunnar Monell, Bo Hagerman