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).

  • Methods and devices for controlling antenna points
    Patent number: 10470216
    Abstract: The teachings presents a method 10 performed in a network node 2, the network node 2 controlling a first and a second antenna point 3, 4. The network node 2 uses the same random access resources for the first and the second antenna points 3, 4. The method 10 comprises: detecting 11 a specific random access preamble received on a random access resource at the first antenna point 3 and on the same random access resource at the second antenna point 4; and scheduling 12 a transmission of a random access response to the random access preamble received at the first antenna point 3 and a transmission of a random access response to the random access preamble received at the second antenna point 4, the random access responses being scheduled separated in time and/or space. The teachings also presents corresponding devices.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: November 5, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Fredrik Gunnarsson, Bo Hagerman, Gunnar Mildh, Stefan Parkvall
  • Determining an altitude of user equipment
    Patent number: 10466066
    Abstract: Techniques of altitude determination by user equipment (UE) in a mobile communications network are discussed. A request for calibration data is transmitted to a node of the network. Barometric calibration data is received at the UE. A barometric pressure sensor in the UE measures a barometric pressure value based on the barometric calibration data. Measuring the barometric pressure value using the barometric pressure sensor in an embodiment comprises adjusting a measured barometric pressure value that is measured using the barometric pressure sensor. The barometric pressure value is transmitted to the node. The UE receives a second part of the barometric calibration data, and in dependence of the second part of the barometric calibration data and/or in dependence of the measured barometric pressure value, determines an altitude of the user equipment.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: November 5, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Fredrik Gunnarsson, Henrik Revsbech Dam, Javier Muñoz Martin
  • License assisted listen-before-talk
    Patent number: 10455559
    Abstract: Systems and methods are disclosed herein that relate to the use of signals in a licensed spectrum to assist with determining a status of an unlicensed channel(s) in an unlicensed spectrum. In some embodiments, a method of operation of a wireless device in a wireless system in which the wireless device transmits and/or receives in both a licensed spectrum and an unlicensed spectrum comprises attempting to detect a busy indication transmitted in the licensed spectrum. The busy indication is an indication that another wireless device is transmitting in the unlicensed spectrum. The method further comprises determining whether to transmit in the unlicensed spectrum based on whether the wireless device has detected a busy indication transmitted in the licensed spectrum. By using signals in the licensed spectrum, the hidden node problem and/or the exposed node problem in the unlicensed spectrum can be mitigated.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: October 22, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Gabor Fodor, Bo Lincoln, Håkan Björkegren, Jonas Kronander, Anders Wallén, Fredrik Gunnarsson
  • D2D communications in a cellular network
    Patent number: 10440525
    Abstract: A method performed by a first transceiver device in D2D communication with second transceiver devices in a cellular network comprises transmitting a reference signal comprising an identity of the first transceiver device, and receiving feedback messages from the second transceiver devices, where a feedback message comprises the identity of the first and an identity of the second transceiver device, and channel characteristics of a radio channel between the first and the second transceiver device, where the channel characteristics are estimated by the second transceiver device. The method further comprises deciding, based on the feedback messages, whether a second transceiver device should be included in a set of intended devices to which the first transceiver device will perform a transmission of a communication signal.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: October 8, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (publ)
    Inventors: Bo Lincoln, Hakan Bjorkegren, Gabor Fodor, Fredrik Gunnarsson, Jonas Kronander, Anders Wallen
  • Methods and apparatuses for positioning based on signal correlation function characteristics feedback
    Patent number: 10433276
    Abstract: A method, apparatus, and system are provided for facilitating positioning based on signal correlation function characteristic feedback. In an embodiment, the method may involve steps performed by a network node in communication with a 5 wireless communication device (WCD) and a plurality of base stations. The network node receives, from the WCD, location information including position reference signal (PRS) correlation function characteristics of a cross-correlation between a received downlink signal and a transmitted PRS for each base station from the plurality of base stations. The network node determines a position of the WCD using 0 the PRS correlation function characteristics. The WCD may initiate the transmission of the PRS correlation function characteristics on its own, or in response to a request to do so from the network node.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: October 1, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Fredrik Gunnarsson, Sara Modarres Razavi, Henrik Rydén, Meng Wang, Ali Zaidi
  • DIFFERENTIATED POSITIONING
    Publication number: 20190297594
    Abstract: A solution for providing differentiated positioning services in a wireless communication system is provided. For example, a method to be performed by a wireless device is provided, which includes requesting a high accuracy positioning information from the network, e.g. from a network node. The method further includes obtaining information from the network in response to the request, which is valid for a predefined period of time, and which enables the wireless device to obtain the high accuracy positioning information during the predefined period of time. The method further includes performing positioning or assisting performance of positioning based on the obtained high accuracy positioning information.
    Type: Application
    Filed: May 15, 2019
    Publication date: September 26, 2019
    Inventors: Pål FRENGER, Erik ERIKSSON, Fredrik GUNNARSSON, Martin HESSLER, Pradeepa RAMACHANDRA
  • HANDLING NEIGHBOUR RELATIONSHIPS
    Publication number: 20190297545
    Abstract: Embodiments herein relate to a method performed by a second network node for handling neighbour relationships between radio network nodes in a wireless communication network. The second network node initiates a neighbour relationship establishment process in the wireless communication network by transmitting an indication to a second radio network node or a first network node. The indication indicates the second radio network node to transmit an identifier of a reference signal handler associated with a reference signal of the second radio network node along with a transmission of the reference signal.
    Type: Application
    Filed: November 8, 2017
    Publication date: September 26, 2019
    Inventors: Pradeepa Ramachandra, Stefan Engström, Reza Moosavi, Claes Tidestav, Andres Reial, Icaro Leonardo J. Da Silva, Fredrik Gunnarsson, Kristina Zetterberg, Pål Frenger
  • Determining a Relationship Between a First and a Second Node
    Publication number: 20190288822
    Abstract: It is provided a method for determining a relationship between a first node and at least one second node each serving one different or the same wireless communication network, the method comprising the steps of detecting pilot contamination; and determining a relationship between the first node and at least one of the second nodes based on the detected pilot contamination.
    Type: Application
    Filed: May 13, 2016
    Publication date: September 19, 2019
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Reza Moosavi, Fredrik Gunnarsson, Martin Hessler, Pradeepa Ramachandra
  • Method, system and devices for connecting a user equipment, UE, to a telecommunication network
    Patent number: 10420162
    Abstract: Method of connecting a User Equipment, UE, to a telecommunication network via an access node comprised in said network, said method comprising the steps of receiving, by said access node, a connection request from said UE, retrieving, by said access node, connection configuration parameters for said UE related to a prior connection between any UE and said telecommunication network, determining, based on a time value associated to said connection configuration parameters related to said prior connection, that said connection configuration parameters related to said prior connection can be re-used, connecting, by said access node, said UE to said telecommunication network via said access node by setting up said connection configuration parameters related to said prior connection, for said UE.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: September 17, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Fredrik Gunnarsson, Diana Andrei, Samuel Axelsson, Olof Axel Granberg
  • A Wireless Device, a Core Network Node and Methods Therein
    Publication number: 20190274111
    Abstract: A core network node (302) and a method therein. The core network node, a transmission point (308,312) and a wireless device (310) operate in a wireless communications network (300). The core network node manages at least one set of transmission points, wherein each transmission point is associated with a respective index. Further, the core network node receives, from the wireless device, measurement information and an index, and maps the measurement information to a transmission point based on the received index and an association, which association associates a transmission point to an index that is unique for the wireless device.
    Type: Application
    Filed: September 13, 2017
    Publication date: September 5, 2019
    Inventors: Fredrik Gunnarsson, Gino Masini, Sara Modarres Razavi, Henrik Rydén, Iana Siomina, Kai-Erik Sunell
  • METHOD FOR DETECTION OF A NARROWBAND POSITIONING REFERENCE SIGNAL (NPRS) LOCATION IN A RADIO FRAME
    Publication number: 20190265326
    Abstract: Embodiments of the disclosure provide methods and apparatus for positioning in a wireless network. One embodiment provides a method, performed by a target device, for enabling detection of a narrowband positioning reference signal, NPRS, location in a radio frame. The method includes: obtaining, from a location server, assistance data related to a neighbour cell in a reference and neighbour cell list. The assistance data includes timing offset information for the neighbour cell; determining a time of a NPRS subframe for the neighbour cell and/or NPRS sequence based on the timing offset information; measuring a positioning reference signal (PRS) based on the determined time; and reporting the measured PRS to the location server.
    Type: Application
    Filed: November 14, 2017
    Publication date: August 29, 2019
    Inventors: Xingqin LIN, Fredrik GUNNARSSON, Olof LIBERG, Sara MODARRES RAZAVI, Henrik RYDÉN, Iana SIOMINA
  • Methods for base-station-to-base-station connection management
    Patent number: 10397851
    Abstract: The present disclosure relates to a base station in a cellular communication network and methods of operation thereof. In one embodiment, a base station determines that the base station is transitioning to an unavailable state. The base station then notifies one or more radio network nodes with which the base station conducts base-station-to-node communication that the base station is unavailable. Thereafter, in one embodiment, the one or more radio network nodes cease communication attempts with the base station. In this manner, the radio network nodes can avoid spending additional resources on attempts to re-establish communication connections to base stations that tend to be offline more often (e.g., low-power base stations (LP-BSs)).
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: August 27, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Fredrik Gunnarsson, Stefan Engström, Gino Luca Masini, Karl Norrman
  • Sidelink Assisted Cooperative Listen-Before-Talk
    Publication number: 20190261413
    Abstract: Systems and methods are disclosed herein that relate to the use of a Device-to-Device (D2D) sidelink, e.g., in a licensed spectrum, to assist with clear channel assessment in an unlicensed spectrum. In doing so, the hidden node problem and/or the exposed node problem can be mitigated. In some embodiments, a method of operation of a wireless device in a cellular communications network comprises performing a sidelink-assisted clear channel assessment (SLA-CCA) procedure to determine whether to transmit on an unlicensed channel. The SLA-CCA procedure is a Clear Channel Assessment (CCA) procedure that is assisted by information received by the wireless device from one or more other wireless devices over a D2D sidelink in a licensed spectrum. The method further comprises, upon determining to transmit on the unlicensed channel as a result of performing the SLA-CCA procedure, transmitting a transmission on the unlicensed channel.
    Type: Application
    Filed: October 31, 2016
    Publication date: August 22, 2019
    Inventors: Gabor Fodor, Håkan Björkegren, Fredrik Gunnarsson, Jonas Kronander, Bo Lincoln, Anders Wallén
  • Conditional Termination of RSTD Measurements
    Publication number: 20190261308
    Abstract: Methods and device for use in a wireless device of reporting positioning measurements comprises receiving network assistance information from a network node. The network assistance information is for assisting the wireless device in performing Observed Time Difference Of Arrival (OTDOA), and comprises: a list of reference cells; a list of neighbor cells; and a rule for terminating Reference Signal Time Difference (RSTD) measurements. The method further comprises performing RSTD measurement between a cell in the reference cell list and a cell in the neighbor cell list. Upon determining the RSTD measurement satisfies the rule for terminating RSTD measurements, the method includes reporting the RSTD measurements to the network node. Upon determining the RSTD measurement does not satisfy the rule for terminating RSTD measurements, performing another RSTD measurement between the cell in the reference cell list and a cell in the neighbor cell list.
    Type: Application
    Filed: November 3, 2017
    Publication date: August 22, 2019
    Inventors: Sara MODARRES RAZAVI, Johan BERGMAN, Åke BUSIN, Fredrik GUNNARSSON, Olof LIBERG, Xingqin LIN, Henrik RYDÈN, Yutao SUI, Martin VAN DER ZEE
  • Reducing latency and saving resources on ‘un’ interface in case of handover from pico base station
    Patent number: 10383011
    Abstract: Small base station, micro, femto or pico BTS (PBS) are connected via Un interface to a donor eNB DeNB. In case of a handover from that PBS packets that had not been acknowledged by a UE need to be forwarded to the target base station. Forwarding them via Un and DeNB to the target eNB causes latency and wast radio resources on Un. Thus, the DeNB uses information about the handover to buffer packets and, after being informed by PBS, forward those packets that had not been acknowledged by the UE. This procedure, therefore, saves resources on Un interface and reduces latency. No forwarding of those packets from PBS to DeNB is required. There is provided a method for forwarding data to a wireless terminal. The method is performed by a proxy node. The method comprises receiving data on a link between a core network and a backhaul hub node. The data is addressed to a wireless terminal served by, or handed over from, a serving network node.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: August 13, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Joel Berglund, Erik Eriksson, Fredrik Gunnarsson, Martin Hessler, Pontus Wallentin
  • Network architecture, methods, and devices for a wireless communications network
    Patent number: 10367677
    Abstract: Methods and apparatus in a fifth-generation wireless communications network, including an example method, in a wireless device, that includes determining a reporting quality threshold for a parameter related to channel state information (CSI); performing a measurement for each of a plurality of beams from a first predetermined set of beams for evaluation; evaluating the measurement for each of the plurality of beams against the reporting quality threshold; discontinuing the performing and evaluating of measurements in response to determining that the reporting quality threshold is met for one of the beams, such that one or more beams in the first predetermined set of beams are not measured and evaluated; and reporting, to the wireless communications network, CSI for the one of the beams.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: July 30, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Stefan Parkvall, Janne Peisa, Gunnar Mildh, Robert Baldemair, Stefan Wager, Jonas Kronander, Karl Werner, Richard Abrahamsson, Ismet Aktas, Peter Alriksson, Junaid Ansari, Shehzad Ali Ashraf, Henrik Asplund, Fredrik Athley, Håkan Axelsson, Joakim Axmon, Johan Axnäs, Kumar Balachandran, Gunnar Bark, Jan-Erik Berg, Andreas Bergström, Håkan Björkegren, Nadia Brahmi, Cagatay Capar, Anders Carlsson, Andreas Cedergren, Mikael Coldrey, Icaro L. J. da Silva, Erik Dahlman, Ali El Essaili, Ulrika Engström, Mårten Ericson, Erik Eriksson, Mikael Fallgren, Rul Fan, Gabor Fodor, Pål Frenger, Jonas Fridén, Jonas Fröberg Olsson, Anders Furuskár, Johan Furuskog, Virgile Garcia, Ather Gattami, Fredrik Gunnarsson, Ulf Gustavsson, Bo Hagerman, Fredrik Harrysson, Ning He, Martin Hessler, Kimmo Hiltunen, Songnam Hong, Dennis Hui, Jörg Huschke, Tim Irnich, Sven Jacobsson, Niklas Jaldén, Simon Järmyr, Zhiyuan Jiang, Martin Johansson, Niklas Johansson, Du Ho Kang, Eleftherios Karipidis, Patrik Karlsson, Ali S. Khayrallah, Caner Kilinc, Göran N. Klang, Sara Landström, Christina Larsson, Gen Li, Bo Lincoln, Lars Lindbom, Robert Lindgren, Bengt Lindoff, Fredrik Lindqvist, Jinhua Liu, Thorsten Lohmar, Qianxi Lu, Lars Manholm, Ivana Maric, Jonas Medbo, Qingyu Miao, Reza Moosavi, Walter Müller, Elena Myhre, Johan Nilsson, Karl Norrman, Bengt-Erik Olsson, Torgny Palenius, Sven Petersson, Jose Luis Pradas, Mikael Prytz, Olav Queseth, Pradeepa Ramachandra, Edgar Ramos, Andres Reial, Thomas Rimhagen, Emil Ringh, Patrik Rugeland, Johan Rune, Joachim Sachs, Henrik Sahlin, Vidit Saxena, Nima Seifi, Yngve Selén, Eliane Semaan, Sachin Sharma, Cong Shi, Johan Sköld, Magnus Stattin, Anders Stjernman, Dennis Sundman, Lars Sundström, Miurel Isabel Tercero Vargas, Claes Tidestav, Sibel Tombaz, Johan Torsner, Hugo Tullberg, Jari Vikberg, Peter Von Wrycza, Thomas Walldeen, Anders Wallén, Pontus Wallentin, Hai Wang, Ke Wang Helmersson, Jianfeng Wang, Yi-Pin Eric Wang, Niclas Wiberg, Emma Wittenmark, Osman Nuri Can Yilmaz, Ali Zaidi, Zhan Zhang, Zhang Zhang, Yanil Zheng
  • Method for sending or receiving system information
    Patent number: 10362476
    Abstract: It is presented a method, performed in a network node, for sending system information. The method comprises the steps of: broadcasting, using at least one message, a system information table and a version indicator of the system information table, wherein each entry of the system information table comprises an entry identifier and a set of system access parameters, such that a radio node broadcasting an entry identifier is accessible through system access by a wireless terminal having access to the system information table; and broadcasting, a version message comprising the version indicator of the system information table, the version message omitting the system information table. A corresponding network node and wireless terminal are also presented.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: July 23, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Johan Rune, Pål Frenger, Fredrik Gunnarsson
  • Narrowband Positioning Reference Signal
    Publication number: 20190215121
    Abstract: A user equipment (16) is configured for operation in a narrowband wireless communication system (10). The user equipment (16) is configured to detect receipt of a narrowband positioning reference signal (20) that comprises a narrowband reference signal sequence. The narrowband reference signal sequence is a subsequence of a wideband reference signal sequence. The wideband reference signal sequence is configured for a wideband frequency bandwidth that is wider than a maximum frequency bandwidth defined for the narrowband wireless communication system (10). The user equipment (16) is also configured to perform a positioning measurement using the narrowband positioning reference signal (20).
    Type: Application
    Filed: September 29, 2017
    Publication date: July 11, 2019
    Inventors: Xingqin Lin, Johan Bergman, Fredrik Gunnarsson, Olof Liberg, Sara Modarres Razavi, Henrik Rydén, Yutao Sui, Yi-Pin Eric Wang
  • Identification of potentially neighboring network nodes in a wireless communication network
    Patent number: 10349258
    Abstract: Identification of network nodes (110a-c) of a first Radio Access Technology, “RAT”, and of a wireless communication network (100), which network nodes (110a-c) are at least potentially neighboring each other. Multiple information sets associated with multiple communication devices (120a-c), respectively, are obtained (204a-b; 401). Each communication device (120a-c) supports both the first RAT and another, second RAT. Each information set, thus associated with a communication device (120a), identifies a network node (110a) of the first RAT, and one or more network nodes (111a) of the second RAT that have been identified by the communication device (120a) when the communication device (120a) was associated with a communicative connection to said identified network node (110a) of the first RAT. The network nodes (110a-b) of the first RAT that are at least potentially neighboring each other are then identified (205; 402) based on the obtained multiple information sets.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: July 9, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Pradeepa Ramachandra, Mehdi Amirijoo, Andreas Bergström, Fredrik Gunnarsson
  • IDENTIFICATION OF NEIGHBORING NETWORK NODES IN A WIRELESS COMMUNICATION NETWORK
    Publication number: 20190208431
    Abstract: Methods, nodes and arrangements for supporting identification of one or more neighboring network nodes comprised in a wireless communication network. A communication device is associated with a communicative connection to a first network node, e.g. a serving base station. The communication device obtains a first identifier identifying the first network node, and transmits the obtained first identifier in an uplink so that the first identifier is receivable by one or more other, second network nodes, e.g. non-serving base stations. Receipt of the first identifier by a second network node enables identification of the first radio network node as neighboring said second radio network node. The second network node obtains, based on the first identifier, an address of the first network node, and/or a second identifier uniquely identifying the first network node, in the wireless communication network.
    Type: Application
    Filed: September 13, 2016
    Publication date: July 4, 2019
    Inventors: Pradeepa RAMACHANDRA, Mehdi AMIRIJOO, Andreas BERGSTRÖM, Fredrik GUNNARSSON