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).

  • Publication number: 20180352453
    Abstract: Embodiments herein relate to a method performed by a wireless device (10) for handling communication in a wireless communication network. The wireless device (10) stores a time instant associated with a receiving event relating to reference signal detection and information related to the receiving event. The wireless device (10) further detects a connection event related to a connection of the wireless device; and reports the time instant and the information to a radio network node (13) in the wireless communication network.
    Type: Application
    Filed: January 4, 2017
    Publication date: December 6, 2018
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Fredrik GUNNARSSON, Icaro L.J. DA SILVA, Pål FRENGER, Reza MOOSAVI, Pradeepa RAMACHANDRA, Claes TIDESTAV, Kristina ZETTERBERG
  • Patent number: 10136371
    Abstract: Systems and methods for Radio Access Technology (RAT) selection for devices capable of Device-to-Device (D2D) communication are disclosed. In some embodiments, a method of operation of a wireless device in a cellular communications network is provided. The method includes camping on a first cell on a first carrier, where the first cell does not support D2D communication. The method also includes, during a first time interval when the first cell satisfies one or more criteria for the wireless device to remain camped on the first cell, monitoring at least one second carrier on a set of pre-configured radio resources for at least one of the group consisting of: a second cell that supports D2D communication, a signal from a second wireless device that supports D2D communication, and D2D communication.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: November 20, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Iana Siomina, Fredrik Gunnarsson, Bengt Lindoff, Stefano Sorrentino
  • Publication number: 20180332575
    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: Application
    Filed: October 31, 2016
    Publication date: November 15, 2018
    Inventors: Gabor Fodor, Bo Lincoln, Häkan Björkegren, Jonas Kronander, Anders Wallén, Fredrik Gunnarsson
  • Patent number: 10111252
    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: Grant
    Filed: February 10, 2015
    Date of Patent: October 23, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Erik Eriksson, Fredrik Gunnarsson, Riikka Susitaival
  • Publication number: 20180302856
    Abstract: A first network node (111) and method therein for monitoring inactive mode coverage for a user equipment (130) in a wireless communication network (100) are disclosed. A plurality of network nodes (111, 112) operate in the wireless communication network (100) and the first network node (111) is a serving network node for the user equipment (130). The first network node (111) receives an inactive mode coverage monitoring report. The first network node (111) analyzes the inactive mode coverage monitoring report and determines whether the user equipment (130) has inactive mode coverage based on the outcome of analysing the inactive mode coverage monitoring report.
    Type: Application
    Filed: September 25, 2017
    Publication date: October 18, 2018
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Kristina ZETTERBERG, Icaro L.J. DA SILVA, Pål FRENGER, Fredrik GUNNARSSON, Reza MOOSAVI, Pradeepa RAMACHANDRA
  • Publication number: 20180294864
    Abstract: A method, wireless device, and network node configured to enable a wireless device to serve as a base station to at least one other wireless device in a communications network, the wireless device being configured to perform predetermined base station functions. The method includes determining a condition triggering a need to provide the predetermined base station functions to the at least one other wireless device, notifying a network node in the communications network that the wireless device is available to provide the predetermined base station functions, receiving approval from the network node to provide the predetermined base station functions, and providing the predetermined base station functions to the at least one other wireless device.
    Type: Application
    Filed: August 30, 2016
    Publication date: October 11, 2018
    Inventors: Gabor FODOR, Fredrik GUNNARSSON, Jonas KRONANDER, Bengt LINDOFF, Anders WALLÉN
  • Publication number: 20180295543
    Abstract: Network node (111) and method therein for assisting a user equipment (130) to handle a connection in a wireless communication network (100) are disclosed. A first network node (111) and a second network node (112) operate in the wireless communication network (100). The first network node (111) is a serving network node for the user equipment (130). The first network node (111) determines that the user equipment (130) is under an idle mode coverage of the second network node (112) based on measurements associated to the user equipment (130). When a connected mode connection between the user equipment (130) and the first network node (111) is released, the first network node sends a context of the user equipment (130) to the second network node (112).
    Type: Application
    Filed: September 25, 2017
    Publication date: October 11, 2018
    Inventors: Fredrik Gunnarsson, Icaro L. J. Da Silva, Reza Moosavi, Pradeepa Ramachandra, Claes Tidestav, Kristina Zetterberg
  • Publication number: 20180288675
    Abstract: According to an aspect, a wireless device receives, from a first node, a blacklist with random access response identifiers. The wireless device transmits a random access preamble to initiate random access to another node and receives a random access response. The wireless device compares a random access response identifier included in the received random access response to the random access response identifiers in the blacklist and establishes a connection to a second node that corresponds to the received random access response, responsive to determining that the random access response identifier in the received random access response is not included in the blacklist. The wireless device sends, to the second node, an identifier for the first node or an identifier for a beam transmitted by the first node, or both.
    Type: Application
    Filed: October 27, 2016
    Publication date: October 4, 2018
    Inventors: Fredrik Gunnarsson, Pradeepa Ramachandra, Rasmus Axén, Thomas Walldeen, Patrik Karlsson, Christer Östberg, Håkan Axelsson, Henrik Ronkainen, Walter Müller, Mehdi Amirijoo
  • Patent number: 10091821
    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: Grant
    Filed: June 19, 2014
    Date of Patent: October 2, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Stefan Wager, Angelo Centonza, Mats Folke, Fredrik Gunnarsson, Riikka Susitaival, Alexander Vesely
  • Patent number: 10085219
    Abstract: A method for power control in a wireless network is performed in a first node in the wireless network and comprises the steps of: estimating a received power spectral density from a second node in the wireless network; determining a target received power spectral density from a third node in the wireless network, in dependence of the estimated received power spectral density; and sending power control information to the third node in dependence on the determined target received power spectral density.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: September 25, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Martin Hessler, Jonas Fröberg Olsson, Fredrik Gunnarsson
  • Patent number: 10070336
    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: Grant
    Filed: October 8, 2014
    Date of Patent: September 4, 2018
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Fredrik Gunnarsson, Claes Bäckström, Bo Hagerman, Jimmy O'Meara
  • 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: 20180249351
    Abstract: Network nodes (102, 104), control node (100) and methods therein, for enabling establishment of a neighbour relation between a first network node (102) and a second network node (104) in a wireless network. The control node (100) sends (1:1) or distributes, to network nodes in the network including the first network node (702), a set of reference signals reserved for neighbour relation establishment. The second network node (104) transmits (1:3) one of the reserved reference signals which is then detected by a wireless device (D1) being served by the first network node (102) which then receives (1:4), from the wireless device (D1), a measurement report indicating the detected reference signal that is recognized by the first network node (102) as belonging to the set of reserved reference signals.
    Type: Application
    Filed: October 6, 2016
    Publication date: August 30, 2018
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mehdi AMIRIJOO, Håkan AXELSSON, Rasmus AXÉN, Fredrik GUNNARSSON, Patrik KARLSSON, Walter MÜLLER, Christer ÖSTBERG, Pradeepa RAMACHANDRA, Henrik RONKAINEN, Thomas WALLDEEN
  • 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: 20180242376
    Abstract: A radio network node (110) manages (A010) establishment of a current radio session between a user equipment (120) and the radio network node (110), wherein the current radio session is associated with a current set of characteristics relating to the radio network node (110) and/or the user equipment (120). During establishment of the current radio session, a core network node (130) retrieves (A080), based on the current set of characteristics, an indication about the MCS offset from a memory (141, 142) accessible by the core network node (130). Then, the core network node (130) sends (A090), to the radio network node (110), the indication about the MCS offset. The indication is derived from a previous radio session, wherein the previous radio session is associated with a previous set of the characteristics, wherein the previous set of the characteristics matches the current set of the characteristics.
    Type: Application
    Filed: September 23, 2015
    Publication date: August 23, 2018
    Inventors: Fredrik Gunnarsson, Joel Berglund, Mirsad Cirkic, Henrik Rydén
  • Patent number: 10057802
    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: Grant
    Filed: October 8, 2014
    Date of Patent: August 21, 2018
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Fredrik Gunnarsson, Claes Bäckström, Bo Hagerman, Jimmy O'Meara
  • Publication number: 20180227877
    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: Application
    Filed: August 15, 2016
    Publication date: August 9, 2018
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Fredrik GUNNARSSON, Sara MODARRES RAZAVI, Henrik RYDÉN, Meng WANG, Ali ZAIDI
  • Patent number: 10045324
    Abstract: The disclosed embodiments herein relate to a method performed by a UE; a UE, a method performed by a location server and a location server and computer programs respectively. The method performed by the UE comprises: receiving from a location server NetWork assisted Reference Signal Time Difference, RSTD, Quantization Information, NW-QI; performing RSTD measurements by measuring or estimating a Time Of Arrival, TOA, of a Positioning Reference Signal, PRS, from respective base station of a plurality of base stations; encoding the RSTD measurements by employing a Enhanced RSTD Quantization Method, E-QM, or by using the NW-QI while encoding the RSTD measurements; and sending UE assisted RSTD Quantization Information, UE-QI, to the location server, the UE-QI including the encoded RSTD measurements.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: August 7, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ali Zaidi, Sara Modarres Razavi, Fredrik Gunnarsson, Meng Wang, Yufei Blankenship, Henrik Rydén
  • Patent number: 10034213
    Abstract: The present disclosure presents a method and a network entity for load contribution distribution in a wireless communication system supporting component carrier communication. The network entity serves a first cell of a wireless communication system. The method comprises receiving (61) information on one or more secondary cell usages of the first cell, wherein a secondary cell usage represents a secondary component carrier load of a wireless device connected to a primary cell of one or more further cells which are different from the first cell. The information on primary cell usage and the one or more secondary cell usage for the first cell is compiled (62) in the network entity. The method further comprises identifying (63) the respective primary cell for each secondary cell usage. Finally it comprises sending (64) secondary cell usage information to a respective network entity serving the identified respective primary cell for each secondary cell usage.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: July 24, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Rasmus Axén, Fredrik Gunnarsson, Stefan Johansson
  • Publication number: 20180205482
    Abstract: A method and a user equipment (110) as well as a method and a radio transmitter (120) for managing positioning reference signals are disclosed. Moreover, a method and a network node (130) for configuring positioning reference signals are disclosed. The network node (130) sends (A050), to the user equipment (110), a reception configuration of positioning reference signals, wherein the reception configuration comprises a cell identity relating to the radio transmitter (120) and an identifier for determining of positioning reference signals. The network node (130) sends (A070), to the radio transmitter (120), a transmit configuration of positioning reference signals, wherein the transmit configuration comprises the cell identity and the identifier. The radio transmitter (120) determines (A090) the positioning reference signals based on the cell identity and the identifier. The radio transmitter (120) sends (A100) the positioning reference signals to the user equipment (110).
    Type: Application
    Filed: May 11, 2017
    Publication date: July 19, 2018
    Inventors: Henrik RYDÉN, Fredrik GUNNARSSON, Sara MODARRES RAZAVI, Meng WANG