Patents by Inventor Fredrik Gunnarsson

Fredrik Gunnarsson 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: 9544834
    Abstract: A method in a first radio network controller, RNC, (105, 405) for handling a reuse of a scrambling code in a cellular network (100) is provided. The first RNC (105, 405) defines a set of scrambling codes. Each scrambling code in the defined set is locally reused by at least two cells in the cellular network (100). The first RNC (105, 405) receives a measurement report from a user equipment (180). The measurement report is related to a scrambling code that is comprised in the defined set of scrambling codes. The first RNC (105, 405) determines that the reported scrambling code is comprised in the defined set of scrambling codes. The first RNC (105, 405) initiates, based on the determination, a process for identifying, among the at least two cells in which the reported scrambling code is locally reused, an originating cell from which the reported scrambling code originates.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: January 10, 2017
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Fredrik Gunnarsson, Klas Johansson
  • Patent number: 9544822
    Abstract: The present invention relates to base stations, methods in a base station, terminals and methods in a terminal for supporting a handover. The invention further relates to computer programs for implementing, in the respective nodes of a wireless network, functionality for supporting a handover. According to one embodiment, a method in a source base station for supporting a handover of a terminal from the source base station to a target base station is provided. The method includes sending to an assisting base station a request for assisting the handover, and communicating handover control information between the terminal and the source base station via the assisting base station.
    Type: Grant
    Filed: January 20, 2014
    Date of Patent: January 10, 2017
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Torsten Dudda, Stefan Wager, Fredrik Gunnarsson
  • Publication number: 20170006563
    Abstract: According to some embodiments, a wireless device detects a plurality of synchronization sources. The synchronization sources include one or more network nodes and one or more device-to-device (D2D) wireless devices. The wireless device selects, based on priority, up to a maximum number (M) of the detected synchronization sources for inclusion in a monitored set that the wireless device tracks in order to maintain at least synchronization timing. In certain embodiments, the priority is determined at least in part according to prioritization rules received from a network node.
    Type: Application
    Filed: January 28, 2015
    Publication date: January 5, 2017
    Inventors: Bengt LINDOFF, Fredrik GUNNARSSON, Qianxi LU, Stefano SORRENTINO
  • Patent number: 9532236
    Abstract: The present disclosure provides methods and apparatuses for setting properties of a forwarding node. The forwarding node represents a relay or a repeater. The method includes establishing a connection for sending Direct Transfer messages between the forwarding node and a radio network node and sending to the radio network node a first Direct Transfer message. The first Direct Transfer message includes a relay indication, indicating to the radio network node that the first Direct Transfer message was sent from a forwarding node. The method also includes receiving from the radio network node a second Direct Transfer message, comprising setting information for setting properties of the forwarding node and setting the properties of the forwarding node based on the setting information.
    Type: Grant
    Filed: May 17, 2010
    Date of Patent: December 27, 2016
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Fredrik Gunnarsson, Pontus Wallentin
  • 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: 9525973
    Abstract: A method in a radio network node is disclosed for handling positioning data in a radio communications network, which radio network node serves a user equipment in a cell. The radio network node obtains positioning data from the user equipment, which positioning data is associated with a positioning measurement for positioning the user equipment. The radio network node associates the obtained positioning data with an on-going trace session of the user equipment. The radio network node then sends a trace record to a network management node, which trace record includes information associated with the positioning data.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: December 20, 2016
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: András Rácz, Mehdi Amirijoo, Fredrik Gunnarsson, Johan Moe
  • Patent number: 9525965
    Abstract: A method of generating location information in a terminal device (200) operative in a wireless communication network is disclosed. The terminal device receives (248) from a first network node (210) a location configuration message. As a result, the terminal device prepares (252) location information but refrains (254) from causing transmission of the location information to the first network node. Instead, the terminal device may transmit the prepared location information to a location information receiving network node (230) different from the first network node (210), to a location information receiving function within the terminal device, or to a location information receiving device (152), operative in the wireless communication network and different from the terminal device (200).
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: December 20, 2016
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Fredrik Gunnarsson, Henrik Enbuske, Iana Siomina
  • Publication number: 20160366703
    Abstract: A method implemented in a user equipment (UE) for adjusting for propagation delay includes transmitting one or more preamble sequence sequences to a network node. The method further includes recording a response result for each preamble sequence transmitted to the network node. The method includes analyzing each response result to determine whether a propagation delay condition exists. If the propagation delay condition exists, the method includes adjusting a timing of a preamble sequence transmission in accordance with a time shift or monitoring for a preamble sequence in accordance with the time shift.
    Type: Application
    Filed: February 10, 2015
    Publication date: December 15, 2016
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Erik ERIKSSON, Fredrik GUNNARSSON, Riikka SUSITAIVAL
  • Patent number: 9516629
    Abstract: A method in, and a network node (110, 140), for supporting compensation of cell outage in a cellular communications network (100). The cellular communications network (100) comprises a compensating cell (135) for compensating the cell outage and a supporting cell (115) neighboring the compensating cell (135). The network node (110, 140) obtains (502, 1202) a sub-band of a system bandwidth for uplink scheduling of resources for the compensating cell (135). The network node (110, 140) schedules (503, 1203), in response to the cell outage, resources for the supporting cell (115) with restricted uplink scheduling within the sub-band. The network node applies (504, 1204) the scheduled resources in the supporting cell (115), thereby supporting the compensation of cell outage. As a result, higher Signal to Interference and Noise Ratio (SINR) is enabled in the uplink in the compensating cell. This may e.g.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: December 6, 2016
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Mehdi Amirijoo, Fredrik Gunnarsson, Johan Moe
  • Publication number: 20160353511
    Abstract: The present disclosure relates to methods and arrangements for re-establishing packet data transfer between a radio base station and a wireless device following radio link failure, the radio base station having pre-configured wireless device information. The RBS receives a request for re-establishment of the radio link from the wireless device. One or more DRBs are selected for re-establishment based on the pre-configured wireless device information. The RBS transmits a radio link re-establishment response to the wireless device comprising information about the selected one or more DRBs. The selected one or more DRBs are re-established upon receipt of a re-establishment confirmation from the wireless device, whereupon packet data transfer is resumed.
    Type: Application
    Filed: May 7, 2014
    Publication date: December 1, 2016
    Inventors: Fredrik Gunnarsson, Walter Müller, Karl Norrman, Stefan Wager
  • Publication number: 20160353309
    Abstract: The present disclosure relates to coverage monitoring and in particular it relates to determining radio coverage, e.g. for small cell deployment in a building. The disclosure relates to methods for coverage determination as well as to corresponding devices and computer programs. According to one aspect, the disclosure proposes a method, performed in a wireless device 10, of determining radio coverage. The method comprises obtaining S1 at least one path along which radio condition measurements are to be performed and performing S2 radio condition measurements along the at least one path. The method further comprises determining S3 position estimates, wherein at least some of the position estimates correspond to the radio condition measurements.
    Type: Application
    Filed: October 8, 2014
    Publication date: December 1, 2016
    Inventors: Fredrik Gunnarsson, Claes Bäckström, Bo Hagerman, Jimmy O'Meara
  • Publication number: 20160353302
    Abstract: The present disclosure relates to coverage monitoring and in particular it relates to determining radio coverage using correlated radio condition measurements and position estimates, for example for small cell deployment in a building. The disclosure relates to methods for coverage determination as well as to corresponding devices and computer programs. According to some aspects, the disclosure proposes a method, performed in a node 10, 110 of determining radio coverage of at least one small cell base station in a wireless communications network. The method comprises the steps of obtaining radio condition measurements, wherein a respective first time value is associated to each radio condition measurement.
    Type: Application
    Filed: October 8, 2014
    Publication date: December 1, 2016
    Inventors: Fredrik Gunnarsson, Claes Bäckström, Bo Hagerman, Jimmy O'Meara
  • Patent number: 9510248
    Abstract: Example embodiments presented herein are directed towards a target base station (401B), a source base station (401A) and a core network node (110, 111, 115) for providing a selective handover for a sub-set of bearers associated with a wireless terminal (101). Example embodiments further comprises utilizing path switch messaging to provide information on which bearers have been switched or handed over to the target base station and which bearers are to remain connected with the source base station.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: November 29, 2016
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Oumer Teyeb, Angelo Centonza, Fredrik Gunnarsson, Niklas Johansson, Stefan Wager, Pontus Wallentin
  • Publication number: 20160345279
    Abstract: A method performed by a radio node for selectively providing synchronization information for Device-to-Device, D2D, communications between devices in a wireless communications network is provided. The radio node receives, when the radio node is providing synchronization information an indication to stop providing synchronization information for D2D communications. The radio node determines whether to continue to provide synchronization information for D2D communications or not based on the received indication. A radio node for selectively providing synchronization information for Device-to-Device, D2D, communications between devices in a wireless communications network is also provided.
    Type: Application
    Filed: October 31, 2014
    Publication date: November 24, 2016
    Inventors: Fredrik Gunnarsson, Zhenshan Zhao, Yunxi Li, Qianxi Lu, Stefano Sorrentino, Qingyu Miao
  • 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
  • Patent number: 9503232
    Abstract: A cellular radio communications network includes base stations that provide radio communication service to user equipments (UEs) in respective cell service areas. A node receives or determines a usage fraction or percentage of protected subframes and converts the fraction or percentage of protected subframes into one or more protected subframe patterns for an aggressor base station to not transmit on or to transmit at reduced power, in one example, an operations and maintenance (OaM) node configures one or more interfered base stations to use the one or more protected subframe patterns, in another example, the node is a base station.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: November 22, 2016
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Per Elmdahl, Angelo Centonza, Fredrik Gunnarsson
  • Patent number: 9485704
    Abstract: The invention relates to methods and arrangements for handling handover-related parameters. A radio base station of a mobile communications network is arranged to serve at least a first cell, and to make handover decisions based on handover-related parameters. The radio base station comprises means for receiving handover related feedback from a radio base station serving a second cell after handover of a UE from said first cell to said second cell; means for using the handover related feedback received from the base station serving said second cell to adjust the handover-related parameters; and further by means for sending handover related feedback to a radio base station serving a second or another cell after handover of a UE to said first cell from said second or another cell.
    Type: Grant
    Filed: April 3, 2008
    Date of Patent: November 1, 2016
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Pal Frenger, Fredrik Gunnarsson, Johan Moe
  • Patent number: 9479973
    Abstract: Example embodiments presented herein are directed towards source (401A) and target (401B) base stations, and corresponding methods therein, for providing a handover for a sub-set of bearers associated with a wireless terminal (101) being served by the source base station (401A), wherein at least one bearer of the wireless terminal remains connected to the source base station. The sub-set of bearers is less than or equal to a total number of bearers associated with the wireless terminal.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: October 25, 2016
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Angelo Centonza, Fredrik Gunnarsson, Niklas Johansson, Oumer Teyeb, Stefan Wager, Pontus Wallentin
  • Publication number: 20160295613
    Abstract: The disclosure relates to a method (100) performed in a wireless device (1500) for handling connectivity to two network nodes (1, 2). The method (100) comprises receiving (101), from a first network node (1), a radio resource configuration message, the radio resource configuration message indicating a change in configuration of a connection towards a second network node (2); applying (102) the change in configuration towards the second network node (2) in response to the radio resource configuration message; and initiating (103) a random access procedure towards the second network node (2) after applying the change in configuration. The disclosure relates to corresponding wireless device, and to methods in network nodes, network nodes, computer programs and computer program products.
    Type: Application
    Filed: June 19, 2014
    Publication date: October 6, 2016
    Inventors: Stefan Wager, Angelo Centonza, Mats Folke, Fredrik Gunnarsson, Riikka Susitaival, Alexander Vesely
  • Publication number: 20160295444
    Abstract: A method in a network node for handling evaluation of a secondary cell for a wireless device. The method comprises establishing a first level of coverage of the secondary cell, based on a first measurement report received from the wireless device, which first measurement report relates to a quality of a signal of the secondary cell. The method further comprises determining an evaluation frequency, based on the established first level of coverage of the secondary cell, which evaluation frequency relates to how frequently a level of coverage of the secondary cell shall be evaluated. The method further comprises sending a configuration to the wireless device, which configuration relates to an evaluation of a second level of coverage of the secondary cell, and which configuration is based on the determined evaluation frequency.
    Type: Application
    Filed: December 12, 2013
    Publication date: October 6, 2016
    Inventors: Rasmus Axén, Stefan Johansson, Fredrik Gunnarsson