Patents by Inventor Erik Lars Westerberg

Erik Lars Westerberg 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: 8554209
    Abstract: A propagated control channel signal for use in a shared radio access network is disclosed. The control channel signal comprises common control data for use by mobile terminals authorized to access the shared radio access network and operator-specific data for use by those of the mobile terminals that are associated with a first mobile operator. The common control data may comprise handover-related data for handovers within the shared radio access network and the operator-specific data may comprise handover-related data for handovers from the shared radio access network to an unshared radio access network having overlapping coverage with the shared radio access network. The common control data and the operator-specific data may comprise values for one or more mobile terminal settings, wherein the operator-specific values are for use instead of the common values by those of the mobile terminals that are associated with the first mobile operator.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: October 8, 2013
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventor: Erik Lars Westerberg
  • Patent number: 8509122
    Abstract: The invention discloses a method (800) for use in a cellular wireless system (100) with a base station (120), a cell (110) in the system and a first user terminal (130) which can be scheduled for receiving traffic from the base station during a down link period, and for transmitting traffic to the base station during an up link period. There is a first guard period (TUD) between the up link period and the down link period, and a second guard period (TDU) between the down link period and the up link period. The method (800) comprises measuring the interference level in the cell for part of the time between two consecutive down link periods, and varying at least one of the following in accordance with the measured interference level: the duration of the first or second guard period, the duration of the up link period, or the traffic sent in the up link period.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: August 13, 2013
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: David Astely, Hannes Ekström, Alireza Nejatian, Per Skillermark, Tobias Tynderfeldt, Erik Lars Westerberg
  • Patent number: 8320260
    Abstract: A wireless communication network automatically tests itself for sleeping cells. This is done by designing the base stations to regularly act as a terminal, contact its neighboring base stations and as a mobile perform a set of typical traffic cases. From the outcome of the traffic cases the probing base station detects neighboring base stations that cannot carry traffic. The information about sleeping cells is subsequently communicated from the base station to the operation and maintenance system.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: November 27, 2012
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Erik Lars Westerberg, Kenneth Balck, Anna Pucar Rimhagen
  • Publication number: 20090047958
    Abstract: Methods and apparatus for maintaining neighbor cell information for use in handover operations are disclosed. In an exemplary method, a mobile station maintains a high-priority neighbor cell list and a low-priority neighbor cell list, each list comprising one or more neighbor cell entries corresponding to candidate cells for handover. Signal strength measurements for candidate cells in the high-priority list are made according to a first measurement schedule, while signal strength measurements for candidate cells in the low-priority list are made according to a second measurement schedule. In one or more embodiments, the low-priority cells are measured less frequently than the high-priority neighbor cells.
    Type: Application
    Filed: January 24, 2008
    Publication date: February 19, 2009
    Inventors: Anna Pucar Rimhagen, Mikael Larsson, Erik Lars Westerberg
  • Publication number: 20090049152
    Abstract: Nodes such as base stations in a mobile communication network are divided and grouped into management clusters. One of the nodes in each management cluster is selected to be a master node. The master node aggregates performance data for each of the nodes in its assigned cluster, and sends a consolidated performance management report containing the aggregated data to a management entity.
    Type: Application
    Filed: January 30, 2008
    Publication date: February 19, 2009
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Anna Pucar Rimhagen, John Quilty, Erik Lars Westerberg
  • Publication number: 20090047957
    Abstract: A propagated control channel signal for use in a shared radio access network is disclosed. The control channel signal comprises common control data for use by mobile terminals authorized to access the shared radio access network and operator-specific data for use by those of the mobile terminals that are associated with a first mobile operator. The common control data may comprise handover-related data for handovers within the shared radio access network and the operator-specific data may comprise handover-related data for handovers from the shared radio access network to an unshared radio access network having overlapping coverage with the shared radio access network. The common control data and the operator-specific data may comprise values for one or more mobile terminal settings, wherein the operator-specific values are for use instead of the common values by those of the mobile terminals that are associated with the first mobile operator.
    Type: Application
    Filed: August 17, 2007
    Publication date: February 19, 2009
    Inventor: Erik Lars Westerberg