Patents by Inventor Tobias Ahlström

Tobias Ahlström 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: 9398478
    Abstract: Embodiments herein relate to a method in a first radio base station (12) for enabling detection of a faulty antenna in a radio communications network. The radio communication network comprises the first radio base station (12) providing radio coverage in a first cell (14), and a second radio base station (13) providing radio coverage in a second cell (15). The first radio base station (12) receives, from at least one user equipment in the first cell (14), a first set of measurement reports over a first period of time. At least some measurement reports are indicating a cell relation between the first cell (14) and the second cell (15). The first radio base station (12) further forms reference statistics of the cell relation between the first cell (14) and the second cell (15) based on the first set of measurement reports. Furthermore, the first radio base station (12) receives, from at least one user equipment in the first cell (14), a second set of measurement reports over a second period of time.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: July 19, 2016
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Tobias Ahlström, Petter Bergman
  • Publication number: 20160156500
    Abstract: A technique of providing performance management (PM) data by a network element of a wireless network to an Operations and Maintenance, OAM, system to which the network element is connected. A method embodiment of the providing PM data to the OAM system to which the network element is connected, the PM data being related to one or more objects associated with the network element, includes determining, by the network element, whether at least one of the one or more objects is an unmirrored object, the unmirrored object being invisible to the OAM system. If at least one of the one or more objects is an unmirrored object, the method accumulates, by the network element, PM data of the at least one unmirrored object with PM data of further objects associated with the network element; and provides, by the network element, the accumulated PM data to the OAM system.
    Type: Application
    Filed: July 1, 2014
    Publication date: June 2, 2016
    Inventors: Stefan ENGSTRÖM, Tobias AHLSTRÖM
  • Patent number: 9357454
    Abstract: Methods, user equipment (120) and target base station (130) for supporting update of neighbor cell relations in a cellular communications network (100). The user equipment (120) switches from being served in the source cell (115) by the source base station (110) to instead being served in the target cell (135) by the target base station. The user equipment sends (304, 403), to the target base station (130), in association with the switching, an identifier of the source cell (115) in the cellular communications network (100) and a request for mobility report. The request for mobility report requests the target base station (130) to send a mobility report to the source base station (110) or a management entity (140) thereof. The mobility report reporting that a successful switch has taken place between the source cell (115) and the target cell (135), thereby enabling updating of the neighbor cell relations based on the mobility report.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: May 31, 2016
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Elisabeth Hansson, Tobias Ahlström, Stefan Engström, Johan Moe
  • Publication number: 20150172975
    Abstract: A controlling node (225) for a first cell (227) in a cellular network (200), arranged to receive measurement reports from User Equipments, UEs (230, 255), in the first cell (227) on the signal strength and/or signal quality of transmissions from the controlling nodes of neighboring cells (217), and to maintain a list of neighboring cells based on such measurement reports. The list shows how many of the UEs (230, 255) in the first cell (227) that each of said neighboring cell's (217) controlling node “covers”, i.e. reaches with a signal strength and/or signal quality above a certain level. The controlling node is also arranged to decide to perform blind handover or release with redirect on one of the UEs in the first cell, and to choose one or more of the cells in the list as the target cell or cells for blind handover or release with redirect.
    Type: Application
    Filed: June 7, 2012
    Publication date: June 18, 2015
    Applicant: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Elisabeth Hansson, Tobias Ahlström, Stefan Engström, Johan Moe
  • Publication number: 20150148042
    Abstract: Methods, user equipment (120) and target base station (130) for supporting update of neighbour cell relations in a cellular communications network (100). The user equipment (120) switches from being served in the source cell (115) by the source base station (110) to instead being served in the target cell (135) by the target base station. The user equipment sends (304, 403), to the target base station (130), in association with the switching, an identifier of the source cell (115) in the cellular communications network (100) and a request for mobility report. The request for mobility report requests the target base station (130) to send a mobility report to the source base station (110) or a management entity (140) thereof. The mobility report reporting that a successful switch has taken place between the source cell (115) and the target cell (135), thereby enabling updating of the neighbour cell relations based on the mobility report.
    Type: Application
    Filed: July 10, 2012
    Publication date: May 28, 2015
    Applicant: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Elisabeth Hansson, Tobias Ahlström, Stefan Engström, Johan Moe
  • Publication number: 20140194113
    Abstract: Embodiments herein relate to a method in a first radio base station (12) for enabling detection of a faulty antenna in a radio communications network. The radio communication network comprises the first radio base station (12) providing radio coverage in a first cell (14), and a second radio base station (13) providing radio coverage in a second cell (15). The first radio base station (12) receives, from at least one user equipment in the first cell (14), a first set of measurement reports over a first period of time. At least some measurement reports are indicating a cell relation between the first cell (14) and the second cell (15). The first radio base station (12) further forms reference statistics of the cell relation between the first cell (14) and the second cell (15) based on the first set of measurement reports. Furthermore, the first radio base station (12) receives, from at least one user equipment in the first cell (14), a second set of measurement reports over a second period of time.
    Type: Application
    Filed: July 22, 2011
    Publication date: July 10, 2014
    Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventors: Tobias Ahlström, Petter Bergman