Patents by Inventor Kristina Zetterberg

Kristina Zetterberg 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).

  • Publication number: 20180249498
    Abstract: A first network node 204 and method therein for establishing a neighbour relation with a second network node 206 is disclosed. The first and second network nodes are operating in a wireless communications network 200. The first network node receives a random access request from a communications device 210 operating in the wireless communications network. For neighbour node determination, the first network node transmits, to a third network node 208, a first information relating to an identity of a preamble comprised in the received random access request and to a first reception time of the random access request. The first network node establishes a neighbour relation with the second network node based on a neighbour node determination performed based on the first information by the third network node.
    Type: Application
    Filed: October 28, 2016
    Publication date: August 30, 2018
    Inventors: Reza Moosavi, Fredrik Gunnarsson, Pradeepa Ramachandra, Kristina Zetterberg
  • Publication number: 20180249430
    Abstract: A first network node 104 and a method therein for establishing a neighbour relation with a second network node 106,106?. The first network node 104 and the second network node are operating in a wireless communications network 100, The first network node receives an uplink synchronisation signal from a communications device 110 operating in the wireless communications network. For neighbour node determination, the first network node transmits, to a third network node 108 operating in the wireless communications network, a first information, which first information relates to the identity of the received signal and to a first reception time of the signal. The first network node establishes a neighbour relation with at least one of a second network node and one or more of one or more further second network nodes based on a neighbour node determination performed by the third network node based on the first information.
    Type: Application
    Filed: October 28, 2016
    Publication date: August 30, 2018
    Inventors: Reza MOOSAVI, Fredrik GUNNARSSON, Pradeepa RAMACHANDRA, Kristina ZETTERBERG
  • Publication number: 20180041908
    Abstract: The present disclosure relates to methods, arrangements and computer programs for antenna sector configuration for an adaptive antenna system, AAS. A method, performed in a network node, comprises associating (35) wireless devices served from the network node to sectors of a respective sector configuration model based on radio network measurements, wherein the association is performed for each out of a number of sector configuration models. The method further comprises estimating (S37) performance metrics for each sector configuration model based on the associating of wireless devices to sectors of the respective sector configuration model and selecting (S37) an antenna sector configuration of the AAS based on the estimated performance metrics.
    Type: Application
    Filed: March 3, 2015
    Publication date: February 8, 2018
    Inventors: Sebastian Faxér, Pradeepa Ramachandra, Kristina Zetterberg
  • Publication number: 20180013476
    Abstract: There is provided a method for utilizing antenna beam information. The method is performed by a network node. The method comprises acquiring antenna beam information indicative of a direction of a wireless device (WD) specific beam of the network node. The method comprises classifying the acquired antenna beam information into a cell specific beam category based on an angular difference between the direction and a direction of main lobe of a cell specific beam of the network node. The method comprises performing at least one of a load balancing action of the wireless device and a radiation beam pattern change related to the cell specific beam category.
    Type: Application
    Filed: February 2, 2015
    Publication date: January 11, 2018
    Inventors: Pradeepa Ramachandra, Harald Kallin, Panagiota Lioliou, Kristina Zetterberg
  • Patent number: 9866355
    Abstract: Methods, arrangement and network nodes for supporting inter-cell coordination of scheduling of radio resources subjected to inter cell interference. The methods involve identifying one or more radio resources which are subjected to inter-cell interference between a first cell and a second cell. The methods further involve deriving a respective service value related to service that could be provided in the respective first and second cell by use of the one or more radio resources. Further, transmissions in the one or more radio resources are controlled based on comparison of the service values, thus enabling inter-cell service value-based scheduling of the one or more radio resources, prioritizing services having the highest value per radio resource.
    Type: Grant
    Filed: October 10, 2011
    Date of Patent: January 9, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mehdi Amirijoo, Fredrik Gunnarsson, Johan Moe, Ke Wang Helmersson, Kristina Zetterberg
  • Patent number: 9800382
    Abstract: The present invention relates to a method and a communication network node for enabling automatic optimization of a random access preamble format usage in a communication network system. The network comprises the communication network node serving at least one cell to which user equipments are accessing. A random access preamble format is set for each cell and comprises a random access sequence length, TSEQ, and a random access preamble cyclic prefix length, TCP. First, the random access sequence length, TSEQ is selected and then the random access preamble cyclic prefix length, T CP is selected. Based on the selected random access sequence length, T SEQ and random access preamble cyclic prefix length, TCP, which random access preamble format to use in said cell is selected.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: October 24, 2017
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Kristina Zetterberg, Mehdi Amirijoo, Pal Frenger, Fredrik Gunnarsson, Johan Moe
  • Publication number: 20170013475
    Abstract: There is provided mechanisms for improving performance in a wireless communications network. A method is performed by a network node. The method comprises acquiring an identification of a set of cells for which adjustment is needed. The method comprises identifying a reason for the adjustment and improvement possibilities of the set of cells using at least one indicator. The reason and the improvement possibilities define a combination of which parameters and network nodes that could be adjusted. The method comprises determining an improvement action for the set of cells by jointly optimizing the combination of parameters and network nodes based on the reason and the improvement possibilities.
    Type: Application
    Filed: July 8, 2015
    Publication date: January 12, 2017
    Inventors: Panagiota Lioliou, Harald Kallin, Birgitta Olin, Pradeepa Ramachandra, Kristina Zetterberg
  • Patent number: 9532283
    Abstract: A telecommunications system comprises a serving radio base station and a candidate radio base station which are different with respect to at least one of frequency and radio access technology. The serving radio base station comprises a radio base station to which a wireless mobile station provides measurement reports. A method comprises the serving radio base station allowing the mobile station to obtain information broadcasted by the candidate radio base station. The information is either information for locating Cell Global Identity (CGI) of the candidate radio base station or the Cell Global Identity (CGI) itself of the radio base station. The mobile station obtains the information from the candidate radio base station during at least one reading gap. The reading gap is a time period in which the mobile station does not receive information from the serving radio base station.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: December 27, 2016
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mehdi Amirijoo, Pål Frenger, Fredrik Gunnarsson, Harald Kallin, Johan Moe, Kristina Zetterberg
  • Patent number: 9531605
    Abstract: There is provided a method for determining a radiation beam pattern. The method is performed by a network node. The method comprises transmitting probe signals, the probe signals being orthogonal to cell-specific reference signals (CRS) transmitted by the network node. The method comprises receiving responses to the probe signals from wireless devices, wherein each response comprises a measurement report based on reception of the transmitted probe signals at each wireless device. The method comprises determining a radiation beam pattern based on the received measurement reports.
    Type: Grant
    Filed: February 2, 2015
    Date of Patent: December 27, 2016
    Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventors: Pradeepa Ramachandra, Fredrik Athley, Harald Kallin, Panagiota Lioliou, Andreas Nilsson, Kristina Zetterberg
  • Patent number: 9503944
    Abstract: Inter-radio access technology (IRAT) ping pong handover of a user equipment (UE) connection between a source radio access technology (RAT) communications network, e.g., LTE, and a different target RAT communications network, e.g., UTRAN, is detected. A control node determines IRAT ping pong handover information and evaluates an IRAT handover request message for the UE connection from the source RAT network with respect to the handover ping pong information. Based thereon, the node determines that the UE connection meets one or more ping pong conditions associated with the handover ping pong information and provides an indication of an IRAT ping pong handover condition to a base station in the source RAT network to allow the base station to make mobility adjustments.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: November 22, 2016
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Angelo Centonza, Fredrik Gunnarsson, Kristina Zetterberg
  • Publication number: 20160226729
    Abstract: There is provided a method for determining a radiation beam pattern. The method is performed by a network node. The method comprises transmitting probe signals, the probe signals being orthogonal to cell-specific reference signals (CRS) transmitted by the network node. The method comprises receiving responses to the probe signals from wireless devices, wherein each response comprises a measurement report based on reception of the transmitted probe signals at each wireless device. The method comprises determining a radiation beam pattern based on the received measurement reports.
    Type: Application
    Filed: February 2, 2015
    Publication date: August 4, 2016
    Inventors: Pradeepa Ramachandra, Fredrik Athley, Harald Kallin, Panagiota Lioliou, Andreas Nilsson, Kristina Zetterberg
  • Patent number: 9386498
    Abstract: A device detects poor coverage associated with a source radio access technology (RAT) with which the device is connected, and connects to a target RAT. The device also measures the source RAT for a time period after connecting to the target RAT, and sends, based on the measurements, one or more measurement reports to the target RAT, where the target RAT forwards the one or more measurement reports to the source RAT. Alternatively, or additionally, the target RAT may detect that the handover was triggered too early and may inform the source RAT or command the UE to return to the source RAT. The device further stops the measuring and the sending when the time period expires. In this way, IRAT handover parameters may be automatically or manually tuned to minimize the number of handovers triggered too early, which may result in a more efficient cell configuration.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: July 5, 2016
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jose Alonso-Rubio, Kristina Zetterberg
  • Publication number: 20160165496
    Abstract: A telecommunications system comprises a serving radio base station and a candidate radio base station which are different with respect to at least one of frequency and radio access technology. The serving radio base station comprises a radio base station to which a wireless mobile station provides measurement reports. A method comprises the serving radio base station allowing the mobile station to obtain information broadcasted by the candidate radio base station. The information is either information for locating Cell Global Identity (CGI) of the candidate radio base station or the Cell Global Identity (CGI) itself of the radio base station. The mobile station obtains the information from the candidate radio base station during at least one reading gap. The reading gap is a time period in which the mobile station does not receive information from the serving radio base station.
    Type: Application
    Filed: December 9, 2015
    Publication date: June 9, 2016
    Applicant: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Mehdi AMIRIJOO, Pål FRENGER, Fredrik GUNNARSSON, Harald KALLIN, Johan MOE, Kristina ZETTERBERG
  • Patent number: 9332566
    Abstract: The invention relates to a method for service aware scheduling of wireless resources in a wireless network. According to the inventive method, a service request for service delivery of a service type is received (51). A performance to value relationship for the service type is determined (52) and approximated (53) with a scheduling weight function associated with the service type. Previous performance for service delivery related to this service request is evaluated and approximated with a performance estimate (54). A scheduling weight is determined (55) by introducing the performance estimate in the scheduling weight function. Resource scheduling is performed (58) following a step of comparing (56) scheduling weights for on-going service requests. The invention also includes a network node and a system for service aware scheduling of wireless resources in a wireless network.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: May 3, 2016
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Kristina Zetterberg, Mehdi Amirijoo, Fredrik Gunnarsson, Johan Moe, Birgitta Olin
  • Patent number: 9220039
    Abstract: In one of its aspects the technology concerns a method of operating a telecommunications system comprising a serving radio base station and a candidate radio base station. The serving radio base station comprises a radio base station to which a wireless mobile station provides measurement reports. The serving radio base station and the candidate radio base station are different with respect to at least one of frequency and radio access technology. The method comprises the serving radio base station allowing the mobile station to obtain information broadcasted by the candidate radio base station. The information is either information for locating Cell Global Identity (CGI) of the candidate radio base station or the Cell Global Identity (CGI) itself of the radio base station. The mobile station obtains the information from the candidate radio base station during at least one reading gap.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: December 22, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Mehdi Amirijoo, Pal Frenger, Fredrik Gunnarsson, Harald Kallin, Johan Moe, Kristina Zetterberg
  • Publication number: 20150304907
    Abstract: Inter-radio access technology (IRAT) ping pong handover of a user equipment (UE) connection between a source radio access technology (RAT) communications network, e.g., LTE, and a different target RAT communications network, e.g., UTRAN, is detected. A control node determines IRAT ping pong handover information and evaluates an IRAT handover request message for the UE connection from the source RAT network with respect to the handover ping pong information. Based thereon, the node determines that the UE connection meets one or more ping pong conditions associated with the handover ping pong information and provides an indication of an IRAT ping pong handover condition to a base station in the source RAT network to allow the base station to make mobility adjustments.
    Type: Application
    Filed: April 21, 2015
    Publication date: October 22, 2015
    Inventors: Angelo Centonza, Fredrik Gunnarsson, Kristina Zetterberg
  • Patent number: 9155018
    Abstract: A device detects poor coverage associated with a source radio access technology (RAT) with which the device is connected, and connects to a target RAT. The device also measures the source RAT for a time period after connecting to the target RAT, and sends, based on the measurements, one or more measurement reports to the target RAT, where the target RAT forwards the one or more measurement reports to the source RAT. Alternatively, or additionally, the target RAT may detect that the handover was triggered too early and may inform the source RAT or command the UE to return to the source RAT. The device further stops the measuring and the sending when the time period expires. In this way, IRAT handover parameters may be automatically or manually tuned to minimize the number of handovers triggered too early, which may result in a more efficient cell configuration.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: October 6, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Jose Alonso-Rubio, Kristina Zetterberg
  • Publication number: 20150237557
    Abstract: A device detects poor coverage associated with a source radio access technology (RAT) with which the device is connected, and connects to a target RAT. The device also measures the source RAT for a time period after connecting to the target RAT, and sends, based on the measurements, one or more measurement reports to the target RAT, where the target RAT forwards the one or more measurement reports to the source RAT. Alternatively, or additionally, the target RAT may detect that the handover was triggered too early and may inform the source RAT or command the UE to return to the source RAT. The device further stops the measuring and the sending when the time period expires. In this way, IRAT handover parameters may be automatically or manually tuned to minimize the number of handovers triggered too early, which may result in a more efficient cell configuration.
    Type: Application
    Filed: May 5, 2015
    Publication date: August 20, 2015
    Inventors: Jose ALONSO-RUBIO, Kristina ZETTERBERG
  • Patent number: 9042895
    Abstract: Inter-radio access technology (IRAT) ping pong handover of a user equipment (UE) connection between a source radio access technology (RAT) communications network, e.g., LTE, and a different target RAT communications network, e.g., UTRAN, is detected. A control node determines IRAT ping pong handover information and evaluates an IRAT handover request message for the UE connection from the source RAT network with respect to the handover ping pong information. Based thereon, the node determines that the UE connection meets one or more ping pong conditions associated with the handover ping pong information and provides an indication of an IRAT ping pong handover condition to a base station in the source RAT network to allow the base station to make mobility adjustments.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: May 26, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Angelo Centonza, Fredrik Gunnarsson, Kristina Zetterberg
  • Patent number: 8934412
    Abstract: In a cellular radio system a message indicating a change of cell size can be transmitted to a number of affected cells, in particular, neighboring cells. The affected cells receiving such a message can be adapted to use the information in the message when determining self-optimization parameters used for control purposes. Hereby, better response times can be achieved without reducing noise sensitivity.
    Type: Grant
    Filed: September 9, 2009
    Date of Patent: January 13, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Fredrik Gunnarsson, Mehdi Amirijoo, Pål Frenger, Johan Moe, Kristina Zetterberg