Patents by Inventor Sara Landström

Sara Landström 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: 8385931
    Abstract: Method and arrangement in a base station for allocating scheduling request resources to a user equipment. The method and arrangement comprises receiving a bearer setup message from the user equipment and sending a first instruction comprising a first scheduling request interval, to be used by the user equipment. Also, a scheduling request is received from the user equipment. The moment of time when data was generated at the user equipment and a periodicity of data generation at the user equipment are estimated. Further, a second scheduling request interval and scheduling request resources to be used by the user equipment is determined, based on the estimated periodicity and moment of data generation at the user equipment, and sent to the user equipment. In addition, a method and arrangement in a user equipment for assisting the base station for allocating scheduling request resources to the user equipment are described.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: February 26, 2013
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Sara Landström, Hans Hannu, Mårten Ericson
  • Publication number: 20130010713
    Abstract: A method in a first base station (105) for handling a downlink transmission is provided. The first base station (105) serves a first user equipment (120). The first base station (105) defines a subframe in which the first base station (105) is to avoid interfering a downlink radio channel between a second base station (115) and a second user equipment (125). The second user equipment (125) is located in an extended range of the second base station (120). The first base station (105) performs, in the defined subframe, a downlink transmission to the first user equipment (120). The first base station (105) receives, from the second base station (115), an indication of an interference caused by the performed downlink transmission on the downlink radio channel. The first base station (105) adjusts a further downlink transmission to be performed by the first base station (105) based on the indication.
    Type: Application
    Filed: July 8, 2011
    Publication date: January 10, 2013
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Mats Folke, Sara Landström
  • Publication number: 20130005382
    Abstract: According to this disclosure, a base station or other controlling node within a wireless communication network determines which channel state information reporting mode should be used by individual users among a plurality of active users being supported by the network. In particular, the determination is made as to whether or not an individual user should use frequency-selective reporting and, if so, whether the user should report a frequency-selective channel quality indicator or a frequency-selective precoder matrix indicator.
    Type: Application
    Filed: June 30, 2011
    Publication date: January 3, 2013
    Applicant: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Sara Landström, Magnus Thurfjell
  • Publication number: 20130003583
    Abstract: A method and an arrangement (500) in a radio network node (130) for redistributing resources between at least a first and second communication device (110, 120) are provided. The radio network node (130) obtains a first estimate of a first signal quality for the first communication device (110) and a second estimate of a second signal quality for the second communication device (120). The radio network node (130) determines a first required signal quality for the first communication device (110) and a second required signal quality for the second communication device (120). When the first required signal quality is less than the first estimate and the second required signal quality is greater than the second estimate, the radio network node (130) allocates resources to the first and second communication devices (110, 120) such that the first signal quality decreases and such that the second signal quality increases.
    Type: Application
    Filed: October 28, 2010
    Publication date: January 3, 2013
    Inventors: Sara Landström, Per Burström, Stefan Wänstedt
  • Publication number: 20120307700
    Abstract: The present invention relates to a user equipment and a radio base station, and to related methods of enabling the radio base station to affect an energy saving in the system during a connection between the user equipment and the radio base station according to a priority level of the energy saving. The method comprises the step of detecting (210) a trigger received via a user interface of the user equipment, where the trigger is associated with the priority level of the energy saving in the system. It also comprises transmitting (220) an indicator of the priority level to the radio base station, allowing the radio base station to affect the energy saving in the system during the connection according to the priority level, by configuring different user or system related parameters.
    Type: Application
    Filed: February 4, 2010
    Publication date: December 6, 2012
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mats Nordberg, Mats Folke, Sara Landström, Ghyslain Pelletier
  • Publication number: 20120202513
    Abstract: Method and arrangement in base station for allocating control elements in a message comprising a predetermined number of control elements, to user equipments to be scheduled. Each user equipment is associated with a priority value, is adapted to communicate with the base station over a radio link and requires a certain number of control elements, depending on the link quality of the radio link. The method comprising sorting user equipments in a scheduling priority list and associating control elements with user equipments by selecting user equipments from the scheduling priority list and summing up the total amount of required control elements by adding the required number of control elements of each user equipment respectively, until the predetermined number of control elements in the message is reached, if two or more user equipments have been associated with the same control elements, the control elements are re-associated between the user equipments.
    Type: Application
    Filed: November 2, 2009
    Publication date: August 9, 2012
    Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventors: Mårten Ericson, Sara Landström, Magnus Thurfjell, Stefan Wänstedt
  • Publication number: 20120188884
    Abstract: A method and network node (110, 120, 140) for determining an offset for selection of a cell of a first radio network node (110) is provided. The network node (110, 120, 140) comprises a processing circuit configured to determine the offset based on a first distance value for indicating distance between the first radio network node (110) and a second radio network node (120). The network node (110, 120, 140) further comprises a transmitter configured to send information about the offset.
    Type: Application
    Filed: January 26, 2011
    Publication date: July 26, 2012
    Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (publ)
    Inventors: Arne Simonsson, Konstantinos Dimou, Bo Hagerman, Sara Landström
  • Publication number: 20120176984
    Abstract: Methods and arrangements in a base station are provided for scheduling radio resources to a user equipment. A time offset value is received that is associated with the moment of time when a frame of data was generated in the user equipment buffer. The moment of time when the frame of data was generated in the user equipment buffer is determined, based on the received time offset value. Thus, the buffer state of the user equipment buffer is predicted by using the determined moment of time when the frame of data was generated in the user equipment buffer. Radio resources are granted to the user equipment, based on the predicted buffer state of the user equipment buffer. Methods and arrangements in a user equipment for assisting the base station in scheduling radio resources are also provided herein.
    Type: Application
    Filed: July 16, 2010
    Publication date: July 12, 2012
    Inventors: Riikka Susitaival, Mårten Ericson, Sara Landström, Magnus Stattin, Stefan Wänstedt, Henning Wiemann
  • Publication number: 20120127891
    Abstract: Method and arrangement in a base station for scheduling radio resources to a user equipment. The method and arrangement comprises receiving a scheduling request from the user equipment, and also a time offset value which value is associated with the moment of time when a frame of data was generated in the user equipment buffer. Also, the moment of time when the frame of data was generated in the user equipment buffer is determined, based on the received time offset value. Thereby the buffer state of the user equipment buffer is predicted by using the determined moment of time when the frame of data was generated in the user equipment buffer. Further, radio resources are granted to the user equipment, based on the predicted buffer state of the user equipment buffer. In addition, a method and arrangement in a user equipment for assisting the base station in scheduling radio resources are described.
    Type: Application
    Filed: August 31, 2009
    Publication date: May 24, 2012
    Inventors: Sara Landström, Stefan Wänstedt, Mårten Ericson
  • Publication number: 20120122465
    Abstract: Method and arrangement in a base station for allocating scheduling request resources to a user equipment. The method and arrangement comprises receiving a bearer setup message from the user equipment and sending a first instruction comprising a first scheduling request interval, to be used by the user equipment. Also, a scheduling request is received from the user equipment. The moment of time when data was generated at the user equipment and a periodicity of data generation at the user equipment are estimated. Further, a second scheduling request interval and scheduling request resources to be used by the user equipment is determined, based on the estimated periodicity and moment of data generation at the user equipment, and sent to the user equipment. In addition, a method and arrangement in a user equipment for assisting the base station for allocating scheduling request resources to the user equipment are described.
    Type: Application
    Filed: August 31, 2009
    Publication date: May 17, 2012
    Inventors: Sara Landström, Hans Hannu, Mårten Ericson