Patents by Inventor Joakim Axmon

Joakim Axmon 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).

  • Base transceiver station interference cancellation for reuse of terrestrial carrier in air-to-ground communication
    Patent number: 10848234
    Abstract: A terrestrial network node of a terrestrial mobile communication network is operated to simultaneously serve terrestrial and aerial coverage on a same carrier frequency. Such operation includes directing a first reception beam towards an aerial radio node. A second reception beam is directed towards a user equipment in the terrestrial mobile communication network. The signal received in the first reception beam is filtered to create a replica of a signal transmitted by the aerial radio node as received by the second reception beam. The replica is subtracted from the signal received by the second reception beam.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: November 24, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (publ)
    Inventors: Joakim Axmon, Esther Sienkiewicz
  • Power control in high speed scenario
    Patent number: 10798657
    Abstract: At least one antenna node is controlled to provide power correction instructions to a wireless communication device at an appropriate time when switching between uplink reception radio lobes, irrespective of which direction the reception radio lobes are directed in relation to the direction of movement of the wireless communication device. Loss of data and receive blocking problems can thereby be at least mitigated.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: October 6, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (publ)
    Inventors: Torgny Palenius, Joakim Axmon, Magnus Larsson
  • Receiver circuit and methods
    Patent number: 10797835
    Abstract: Disclosed is a receiver circuit comprising an analog-to-digital converter (ADC) circuit having an analog input, a clock input, and a digital output, and a clock divider circuit having a reference clock input and a phase selector input, and having a clock output coupled to the clock input of the ADC circuit. The clock divider circuit is configured to divide a reference clock signal coupled to the reference clock input at a reference clock frequency, to produce a clock output signal at an ADC clock frequency, at the clock output, such that the reference clock frequency is an integer multiple N of the ADC clock frequency. The clock divider circuit is further configured to select from among a plurality of selectable phases of the clock output signal, responsive to a phase selector signal applied to the phase selector input.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: October 6, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Yuhang Liu, Joakim Axmon, Michael Breschel, Johan Hill
  • Reduced grid for measurement of total radiated power
    Patent number: 10784972
    Abstract: A method and apparatus for performing TRP measurements of an antenna system uses a sampling grid that takes into account the spherical geometry and the directivity of the antenna under test, while considering test time. The optimization of the sampling grid balances the trade-off between reducing the number of samples to reduce test time, and ensuring accuracy of the TRP estimates.
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: September 22, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Joakim Axmon, Thomas Chapman, Torbjörn Elfström, Esther Sienkiewicz
  • RAT selection in dual mode transceivers
    Patent number: 10785712
    Abstract: The wireless apparatus and network node disclosed herein facilitate the selection and use of one of multiple RATs for communications between the wireless apparatus and the network node. The selected RAT provides a lower energy consumption at the wireless apparatus for the communications with the network node. To that end, the wireless apparatus selects between at least two RATs, e.g., first and second RATs, where the first and second RATs are both coordinated by a network node in communication with the wireless apparatus, and where a system bandwidth of the second RAT and a system bandwidth of the first RAT are both comprised within a third system bandwidth of a third RAT coordinated by the network node.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: September 22, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Bengt Lindoff, Joakim Axmon, Muhammad Kazmi, Santhan Thangarasa
  • POWER CONTROL IN HIGH SPEED SCENARIO
    Publication number: 20200252879
    Abstract: At least one antenna node is controlled to provide power correction instructions to a wireless communication device at an appropriate time when switching between uplink reception radio lobes, irrespective of which direction the reception radio lobes are directed in relation to the direction of movement of the wireless communication device. Loss of data and receive blocking problems can thereby be at least mitigated.
    Type: Application
    Filed: December 3, 2015
    Publication date: August 6, 2020
    Inventors: Torgny PALENIUS, Joakim AXMON, Magnus LARSSON
  • Method and apparatus for testing mobile terminals in an OFDM system
    Patent number: 10721638
    Abstract: The present invention relates to a method and apparatus for testing mobile terminals in an OFDMA system, in which all or part of available downlink radio resources in a cell are transmitted. A processing unit in a test apparatus splits a set of contiguous resource blocks into separate contiguous portions. A first contiguous portion of the set of resource blocks is allocated to users of a first type, and a second contiguous portion of the set of resource blocks is allocated to users of a second type. A transmitter in the test apparatus transmits test signals to the users of the first type and the second type using the at least one contiguous set of resource blocks.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: July 21, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Muhammad Ali Kazmi, Joakim Axmon, Christian Bergljung, Farshid Ghasemzadeh, Walter Gerhard Alois Müller
  • Methods and apparatus for synchronization of communication devices operating in half duplex mode
    Patent number: 10721053
    Abstract: Methods and apparatus disclosed herein enable a half-duplex, HD, wireless communication device, WCD (16), to remain synchronized to a supporting communication network (10), during uplink transmissions that use a large repetition factor, also referred to a using a large bundle size. For example, the WCD (16) uses a rule whereby the WCD (16) tunes back to the downlink carrier from time to time while making an uplink transmission that uses a large repetition factor. Re-tuning to the downlink carrier from time to time in this manner allows the WCD (16) to correct and maintain its time and frequency synchronization with respect to the network (10).
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: July 21, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Joakim Axmon, Johan Bergman, Yufei Blankenship, Santhan Thangarasa, Kazuyoshi Uesaka
  • Methods and apparatuses for controlling measurements bandwidth to account for impairments
    Patent number: 10715265
    Abstract: There are provided methods, apparatuses, and computer programs for improving measurement of a reference signal parameter measured by a wireless device, the reference signal parameter being a parameter of a reference signal transmitted by a radio network node in a wireless communication network. An example method includes determining that the wireless device is operating with a low measurement accuracy condition that affects measurement of the reference signal parameter. A severity of the low measurement accuracy condition has a positive correlation with the quality of a channel over which the reference signal is received. The method further includes adapting a first measurement bandwidth in response to determining that the wireless device has the low measurement accuracy condition that is positively correlated with the quality of the channel. The method further includes measuring a first reference signal parameter using the adapted first measurement bandwidth.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: July 14, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Iana Siomina, Muhammad Kazmi, Joakim Axmon
  • Micro Sleep for Network Node Providing Service to User Equipment Onboard a High Speed Train
    Publication number: 20200205070
    Abstract: In one aspect, a network node receives a message indicating that UEs that require service are expected to enter a service area of the network node. The network node determines, based on the message, that a change in power management for radio equipment corresponding to the service area is required. The network node determines a timing for initiating the change in power management for the radio equipment, taking into account a predicted time for when the UEs are expected to enter the service area, and triggers the change in power management for the radio equipment, based on the determined timing. In another aspect, the network node predicts a departure time from the first service area for the UEs. The network node then sends to another network node, prior to the predicted departure time, an indication that the UEs are expected to enter a service area of the other network node.
    Type: Application
    Filed: June 19, 2017
    Publication date: June 25, 2020
    Inventors: Esther Sienkiewicz, Joakim Axmon
  • Configuration of autonomous gaps based on repetition level in enhanced coverage
    Patent number: 10674437
    Abstract: Methods and apparatuses disclosed herein involve network-side operations that include adjusting scheduling or reporting times of a wireless device, to accommodate acquisition of neighbor-cell System Information, SI, by the device while operating under conditions of enhanced coverage with respect to the neighbor cell. Further disclosed are network-side operations that include determining the repetition level to be used for transmitting SI, for providing enhanced coverage to one or more wireless devices. Additionally, disclosed device-side operations include configuring the autonomous gaps used in a SI acquisition procedure, in dependence on the number of repetitions determined to be needed for acquiring the SI of a neighbor cell, while the device is operating under enhanced coverage with respect to the neighbor cell.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: June 2, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Santhan Thangarasa, Joakim Axmon, Muhammad Kazmi, Kazuyoshi Uesaka
  • Backhaul for access points on high speed trains
    Patent number: 10667087
    Abstract: Reception and transmission from at least two sets of antenna ports on a high speed train are controlled, wherein the at least two sets of antenna ports are installed at different locations on the high speed train. This involves determining a velocity and the position of each of the antenna ports, and using these as a basis for determining a reception combining scheme and/or transmission scheme from the sets of antenna ports. Signals are transmitted and received from the sets of antenna ports in conformance with the determined reception combining and/or transmission scheme.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: May 26, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (publ)
    Inventors: Bengt Lindoff, Joakim Axmon, Bryan Smith
  • In-flight cellular communications system coverage of mobile communications equipment located in aircraft
    Patent number: 10667197
    Abstract: A network node of a terrestrial cellular system provides telecommunications service to a user equipment (UE) in an airborne aircraft. Navigation information transmitted from the aircraft is periodically acquired, including aircraft identity, position, altitude, and a time of determining aircraft position. A link is maintained between the network node and the UE by transmitting beam steered, Doppler shift compensated downlink signals, and by performing beam steered reception of uplink signals. Beam steering is directed toward the aircraft based on the navigation information. Doppler shift compensation is adapted to compensate for a Doppler shift such that the UE experiences a nominal carrier frequency when receiving transmissions from the antenna nodes. Handover from a first to a second coverage area includes using a same cell identifier and a same frequency allocation in the second coverage area as are used in the first.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: May 26, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (publ)
    Inventors: Joakim Axmon, Peter Alriksson, Bjorn Ekelund, Bengt Lindoff
  • RAT Selection In Dual Mode Transceivers
    Publication number: 20200163006
    Abstract: The wireless apparatus and network node disclosed herein facilitate the selection and use of one of multiple RATs for communications between the wireless apparatus and the network node. The selected RAT provides a lower energy consumption at the wireless apparatus for the communications with the network node. To that end, the wireless apparatus selects between at least two RATs, e.g., first and second RATs, where the first and second RATs are both coordinated by a network node in communication with the wireless apparatus, and where a system bandwidth of the second RAT and a system bandwidth of the first RAT are both comprised within a third system bandwidth of a third RAT coordinated by the network node.
    Type: Application
    Filed: January 22, 2020
    Publication date: May 21, 2020
    Inventors: Bengt Lindoff, Joakim Axmon, Muhammad Kazmi, Santhan Thangarasa
  • Synchronization signal detection
    Patent number: 10652068
    Abstract: Detection of Narrow-Band IOT (NB-IOT) Synchronization signal and Cyclic Prefix length determination at UE. The detection method implements symbol level correlation, comprising: filtering the radio signal with a plurality of matched filters to obtain a correlation for each OFDM symbol in the synchronization signal, wherein each matched filter provides a correlation with one OFDM symbol in the synchronization signal; delaying and combining the outputs of the plurality of matched filters in a first way to provide a first combined output for the normal cyclic prefix configuration and delaying and combining the outputs of the plurality of matched filters in a second way to provide a second combined output for the extended cyclic prefix configuration; and detecting a correlation peak indicative of the synchronization signal in one of the first or second combined outputs. The present disclosure also relates to a user equipment including the apparatus.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: May 12, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Joakim Axmon, Dandan Hao
  • Communication Device and Method for Cell Search
    Publication number: 20200145909
    Abstract: A wireless communication device and method therein for cell scanning in a wireless communication networks are disclosed. The wireless communication device is capable of wireless communication with at least a first Radio Access Technology, RAT, at a first carrier frequency. The wireless communication device performs (410) a cell scanning on the first carrier frequency for determining a possible access node to connect to. When no synchronization signal on the first frequency is detected, or when a synchronization signal on the first frequency is detected but connection establishment procedure to the access node broadcasting the detected synchronization signal is unsuccessful, the wireless communication device obtains (420) system deployment information for the first carrier frequency and determines (430) at least a second carrier frequency for cell scanning based on the system deployment information.
    Type: Application
    Filed: April 28, 2017
    Publication date: May 7, 2020
    Inventors: Bengt Lindoff, Joakim Axmon
  • Method and arrangement for uplink transmission adaptation
    Patent number: 10645713
    Abstract: A method of a wireless communication device is disclosed wherein the wireless communication device comprises a radio transceiver, first (310) and second (330) autonomous radio access control units, and a radio control unit (320). The first and second autonomous radio access control units are adapted to control operation of the wireless communication device in association with a first network node of a first radio access system and a second network node of a second radio access system, respectively, and the radio control unit is adapted to manage time sharing of the radio transceiver by the first and second radio access control units. The method comprises—during use (311) of the radio transceiver by the first radio access control unit—receiving (by the radio control unit) a first message (332) from the second radio access control unit and sending (by the radio control unit) a second message (322) to the first radio access control unit.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: May 5, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Bengt Lindoff, Joakim Axmon
  • Synchronization signal search
    Patent number: 10645662
    Abstract: A wireless communication device in a cellular wireless communication system activates (402) radio receiver circuitry during repeated time windows. The repeated activation has a nominal repetition time interval, T, and each repeated time window has a window duration, DT. During each DT, detection (404) is made of a plurality of synchronization signals that are transmitted by a respective cell. Based on the detected synchronization signals, calculation (406) is made of a respective cell quality value. These calculated quality values are then provided (408) to a mobility process. Depending (410) on the calculated quality values and at least a first quality threshold, any of T and DT are adjusted (412).
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: May 5, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Claes Tidestav, Joakim Axmon, Bengt Lindoff, Reza Moosavi, Edgar Ramos
  • Application of Timing Advance Command in Wireless Communication Device in Enhanced Coverage Mode
    Publication number: 20200136792
    Abstract: Embodiments disclosed herein relate to a method in a wireless communication device that operates in an enhanced coverage mode, the enhanced coverage mode comprising sequential repetition of messages sent from the wireless communication device to a network node. An example method includes: receiving a Timing Advance Command TAC from the network node; and adapting a time at which the TAC is applied, wherein a time difference between the time at which the TAC is applied and a time at which the TAC is received shall be greater than or equal to a specified time depending on a type of the used Radio Access Technology, such that application of the TAC does not occur during a period after a first subframe of a repeated uplink transmission till the end of the repeated uplink transmission.
    Type: Application
    Filed: December 9, 2019
    Publication date: April 30, 2020
    Inventors: Joakim Axmon, Johan Bergman, Dandan Hao, Muhammad Kazmi, Santhan Thangarasa
  • Network architecture, methods, and devices for a wireless communications network
    Patent number: 10638253
    Abstract: Methods and apparatus in a fifth-generation wireless communications, including an example method, in a wireless device, that includes receiving a downlink signal comprising an uplink access configuration index, using the uplink access configuration index to identify an uplink access configuration from among a predetermined plurality of uplink access configurations, and transmitting to the wireless communications network according to the identified uplink access configuration. The example method further includes, in the same wireless device, receiving, in a first subframe, a first Orthogonal Frequency-Division Multiplexing (OFDM) transmission formatted according to a first numerology and receiving, in a second subframe, a second OFDM transmission formatted according to a second numerology, the second numerology differing from the first numerology. Variants of this method, corresponding apparatuses, and corresponding network-side methods and apparatuses are also disclosed.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: April 28, 2020
    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, Rui Fan, Gabor Fodor, Pål Frenger, Jonas Fridén, Jonas Fröberg Olsson, Anders Furuskär, 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, 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, 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, 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, Yanli Zheng