Patents by Inventor Olof Liberg

Olof Liberg 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: 11218281
    Abstract: Embodiments herein disclose e.g. a method performed by a wireless device (10) for handling communication for the wireless device in a second wireless communication network. The second wireless communication network coexists with a first wireless communication network on a same bandwidth in frequency, wherein the first wireless communication network applies a first shift in frequency in uplink transmissions. The wireless device receives from a radio network node (12,13), an indication indicating application of a second shift in frequency to uplink transmissions in case the second wireless communication network uses Frequency Division Duplex (FDD). The wireless device further applies the second shift in frequency to uplink transmissions, wherein the second shift defines a shift in frequency to a subcarrier relative to a subcarrier grid of the second wireless communication network or a shift in frequency to the subcarrier grid of the second wireless communication network.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: January 4, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Robert Baldemair, Johan Bergman, Erik Dahlman, Olof Liberg, Stefan Parkvall, Yi-Pin Eric Wang
  • Publication number: 20210399797
    Abstract: A wireless device is operable to communicate with a network node of a communications network via a non-terrestrial communication path that includes satellites and satellite gateways. The wireless device determines that communication between the wireless device and the network node will experience a communication interrupting transition during a transition period in which the non-terrestrial communication path between the wireless device and the network node will be interrupted. The wireless device adjusts a PHY layer procedure of the wireless device to mitigate switching problems with one of the of satellites during and/or after the interruption.
    Type: Application
    Filed: October 7, 2019
    Publication date: December 23, 2021
    Inventors: Talha Khan, Olof Liberg, Helka-Liina Määttänen, Yi-Pin Eric Wang, Xingqin Lin
  • Publication number: 20210392659
    Abstract: Exemplary embodiments include methods for transmitting uplink (UL) data, by a user equipment (UE), using preconfigured uplink resources (PUR) in a radio access network (RAN). Such methods include receiving, from a network node in the RAN, a first PUR configuration, and transmitting, based on the first PUR configuration, a first UL data message to the network node Such methods also include receiving, from the network node, a first acknowledgement (PUR ACK) of the first UL data message. The first PUR ACK indicates whether the first UL data message was correctly or incorrectly received by the network node, and includes information related to subsequent UL transmissions using PUR (e.g., a second PUR configuration, a fallback indication, etc.). Some embodiments also include transmitting a second UL data message. Other embodiments include complementary methods performed by a network node, as well as UEs network nodes and UEs configured to perform such methods.
    Type: Application
    Filed: October 30, 2019
    Publication date: December 16, 2021
    Inventors: Tuomas Tirronen, Gerardo Agni Medina Acosta, Sandeep Narayanan Kadan Veedu, Yutao Sui, Andreas Höglund, Johan Bergman, Olof Liberg
  • Publication number: 20210385675
    Abstract: Embodiments include methods for radio link monitoring (RLM) by a user equipment (UE) in a combined terrestrial and satellite wireless communication network. Such methods include, during a discontinuity in a connection between a UE and a terrestrial network node (TNN), performing RLM of the connection based on a second configuration. Such methods also include, before and/or after the discontinuity, performing RLM of the connection based on a first configuration. The connection includes a first link between the UE and a satellite and a second link between the satellite and the TNN. The discontinuity includes a link switch in at least one of the first link and the second link. The RLM before, during, and after the discontinuity can include various first, second, and third operations, respectively. Embodiments also include complementary methods performed by a TNN, as well as UEs and TNNs configured to perform operations corresponding to such methods.
    Type: Application
    Filed: November 1, 2019
    Publication date: December 9, 2021
    Inventors: Helka-Liina Määttänen, Talha Khan, Xingqin Lin, Henrik Rydén, Sebastian Euler, Olof Liberg
  • Publication number: 20210360677
    Abstract: New signaling is defined from wireless devices (10) to a wireless communication network, concerning the wireless devices' duty cycle statuses. This allows the network to optimize its control of the radio resource usage. Additionally, embodiments described herein provide new signalling from the network to wireless devices concerning the network's duty cycle status. This allows wireless devices (10) to optimize their idle mode operation, including decisions whether to request a connection setup or remain in idle mode. Embodiments described and claimed herein provide a set of simple methods for operating a cellular system in a duty cycle controlled radio frequency band.
    Type: Application
    Filed: September 13, 2019
    Publication date: November 18, 2021
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Olof Liberg, David Sugirtharaj, Emma Wittenmark, Mai-Anh Phan
  • Publication number: 20210360710
    Abstract: Systems and methods are disclosed herein for providing Early Data Transmission (EDT) information and Coverage Enhancement (CE) information to a base station and obtaining and using this information at a base station. Embodiments of a method performed by a wireless device and corresponding embodiments of a wireless device are disclosed. In some embodiments, a method performed by a wireless device for reporting radio conditions during random access comprises transmitting a message or report to a base station, the message or report comprising CE information, EDT information, or both the CE information and the EDT information. In this manner, the base station is provided information that can be used by the base station to optimize performance of the random access procedure. Embodiments of a method performed by a base station and corresponding embodiments of a base station are also disclosed.
    Type: Application
    Filed: September 24, 2019
    Publication date: November 18, 2021
    Inventors: Andreas Höglund, Yutao Sui, Olof Liberg, Magnus Stattin
  • Publication number: 20210360459
    Abstract: A method, system and apparatus are disclosed. A network node and a wireless device configured to communicate in a communication system are provided. The communication system having narrowband multi-carrier operation. The network node including processing circuitry configured to receive in an uplink control information field an indication of a downlink channel quality for at least one of a plurality of carriers used by the wireless device in a radio resource control, RRC, connected mode. The wireless device including processing circuitry configured to trigger an indication of a downlink channel quality in an uplink control information field and cause transmission of the indication to a network node.
    Type: Application
    Filed: October 8, 2019
    Publication date: November 18, 2021
    Inventors: Johan ZHANG, Andreas HÖGLUND, Olof LIBERG, Ritesh Shreevastav, Yutao SUI
  • Patent number: 11178698
    Abstract: Techniques for performing random access in a wireless communication system are presented. For instance, the present disclosure includes an example method that includes determining a transmission power with which the UE (102) is to transmit a random access preamble while operating within a certain coverage enhancement level. In some examples, the transmission power is determined as a function of a target receive power with which the random access preamble transmission is targeted to be received by a network node (106), and a path loss between the UE (102) and a network node (106). In addition, the method includes transmitting the random access preamble using the determined transmission power while operating within the certain coverage enhancement level.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: November 16, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Olof Liberg, Andreas Höglund, Yutao Sui
  • Patent number: 11166229
    Abstract: A method for selecting a cell by a wireless device in a wireless communication network is disclosed. The method comprises: receiving a signal from a cell associated with a network node; determining whether the signal from the cell satisfies a cell selection criterion, wherein the cell selection criterion is based at least in part on a parameter that controls a compensation to the cell selection criterion, the compensation being associated with a power class of the wireless device; and selecting the cell in response to a determination that the signal from the cell satisfies the cell selection criterion. A wireless device for carrying out this method is also disclosed.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: November 2, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mårten Sundberg, Olof Liberg, Martin Van Der Zee
  • Publication number: 20210336731
    Abstract: A method performed by a network node (260, 500) in a wireless communications system (200) is disclosed. The method comprises generating (401) a time-continuous baseband signal by applying a phase compensation that removes a physical resource block (PRB)-dependent phase rotation on a subcarrier. The method comprises converting (402) the generated time-continuous baseband signal into a radio frequency signal. The method comprises transmitting (403) the radio frequency signal to a wireless device over a radio interface.
    Type: Application
    Filed: May 2, 2019
    Publication date: October 28, 2021
    Inventors: Olof Liberg, David Sugirtharaj, Yi-Pin Eric Wang
  • Patent number: 11159949
    Abstract: A method and network node for providing support for frequency-overlapping carriers among a first radio access technology, RAT, and a second RAT is provided. Second RAT information to signal to the first RAT wireless device is determined. The second RAT information configured to allow the first RAT wireless device to determine, at a resource element level, resources reserved for second RAT transmissions. The second RAT information is caused to be communicated to the first RAT wireless device.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: October 26, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Robert Baldemair, Johan Bergman, Erik Dahlman, Olof Liberg, Stefan Parkvall, Yi-Pin Eric Wang
  • Publication number: 20210329587
    Abstract: The invention relates to a method for determining a location of a low power wide area device (300) connected to a cellular network. The method is carried out by a positioning node (100) and comprises the steps of receiving a positioning request for the low power wide area device (300) and selecting a first set of radio access nodes (200) of the cellular network which are available and ready to process an uplink positioning signal transmitted by the low power wide area device (300).
    Type: Application
    Filed: August 8, 2018
    Publication date: October 21, 2021
    Inventors: Andreas Höglund, Olof Liberg, Sara Modarres Razavi
  • Publication number: 20210314117
    Abstract: A wireless device (12) is configured for use in a wireless communication system (10). The wireless device (12) is configured to receive signaling (16) from a network node (14). The signaling (16) in some embodiments indicates that a reference signal (20) is configured to be transmitted before and/or during every L occurrence of a physical downlink control channel search space (18), wherein L?2. In other embodiments, the signaling (16) indicates that a reference signal (20) is configured to be transmitted before and/or during every K discontinuous reception, DRX, cycle (22), wherein K?2.
    Type: Application
    Filed: August 8, 2019
    Publication date: October 7, 2021
    Inventors: Yi-Pin Eric Wang, Kazuyoshi Uesaka, Santhan Thangarasa, Ritesh Shreevastav, Yutao Sui, Olof Liberg
  • Publication number: 20210306968
    Abstract: Embodiments of methods for providing timing advance change detection are disclosed. In some embodiments, a method performed by a wireless device for determining a validity of a timing advance configuration of the wireless device for an idle mode transmission comprises obtaining, while the wireless device is operating in a connected mode, a timing advance value for the wireless device. The method further comprises transitioning from the connected mode to an idle mode, and performing a measurement on one or more serving cells of the wireless device while the wireless device is in the idle mode. The method also comprises determining whether the timing advance is valid for an idle mode transmission based on the measurement. In some embodiments, the measurement may be a signal strength measurement such as, e.g., a Reference Signal Received Power measurement and/or a signal quality measurement such as, e.g., a Reference Signal Received Quality measurement.
    Type: Application
    Filed: July 30, 2019
    Publication date: September 30, 2021
    Inventors: Olof Liberg, Andreas Höglund, Emre Yavuz
  • Publication number: 20210297918
    Abstract: A network-based method allows a network to optimize its control of radio resource usage by directing connected and idle mode User Equipment (UEs) (10) to another network node, e.g. a neighbor cell, having a better duty cycle, or by configuring the UEs to use another frequency band served by the same network node or a different network node. Signaling its duty cycle budget to the UEs allows the UEs to optimize their idle mode operation by performing cell re-selection to a network node which has a better duty cycle budget.
    Type: Application
    Filed: September 19, 2019
    Publication date: September 23, 2021
    Inventors: Olof Liberg, David Sugirtharaj, Emma Wittenmark, Mai-Anh Phan
  • Publication number: 20210297976
    Abstract: Systems and methods are provided for maintaining validity of a timing advance value in a wireless device operable in a wireless communication network. According to an embodiment, validity of a previously configured a TA value in a wireless device is determined by comparing the previously configured TA value to a threshold. The threshold may be based on an amount of time required for a radio signal to traverse a distance corresponding to the intended radius of a cell serving the wireless device. Alternatively, the TA validity may be determined based on a history of TA updates. Optionally, a previously configured TA value may be gradually ramped up or down until the wireless device receives an acknowledgment of successful receipt of an UL data transmission by the base station.
    Type: Application
    Filed: August 2, 2019
    Publication date: September 23, 2021
    Inventors: Gerardo Agni MEDINA ACOSTA, Olof LIBERG, Yutao SUI, Hazhir SHOKRI RAZAGHI
  • Patent number: 11128405
    Abstract: According to an aspect, a wireless device identifies system frame numbers (SFNs) that are used for wireless transmissions that use a broadcast channel (BCH) transmission time interval (TTI), where frequency hopping cycles (FHCs) are not aligned with a cycle of the SFNs. The wireless device receives FH information indicating how the FHC used for wireless transmissions relates to the SFN cycle and identifies an SFN timing for the wireless transmissions based on the FH information.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: September 21, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Mai-Anh Phan, David Sugirtharaj, Emma Wittenmark, Oskar Drugge, Olof Liberg
  • Patent number: 11096221
    Abstract: According to certain embodiments, a method is disclosed for use in a network node. The method comprises receiving a random access preamble from a wireless device, scheduling a grant of a first uplink transmission opportunity and a second uplink transmission opportunity, and sending a random access response to the wireless device. The random access response indicates information associated with the grant of the first uplink transmission opportunity and the second uplink transmission opportunity. The method further comprises receiving data from the wireless device via the first uplink transmission opportunity or the second uplink transmission opportunity.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: August 17, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Andreas Höglund, Johan Bergman, Olof Liberg, Magnus Stattin, Tuomas Tirronen
  • Publication number: 20210227543
    Abstract: A method performed by a first network node operating in a wireless communications network is described herein. The first network node initiates sending a first indication to a first wireless device operating in the wireless communications network using NB-IoT. The first indication indicates that a first carrier, the first carrier being a standalone Narrow Band-Internet of Things, NB-IoT, carrier operating within a New Radio, NR, carrier, is: a) deployed in one of: a guardband mode and an inband mode, and b) shifted away by a frequency offset from a frequency channel raster grid used by the first wireless device.
    Type: Application
    Filed: February 1, 2019
    Publication date: July 22, 2021
    Inventors: Yi-Pin Eric WANG, Yutao SUI, Olof LIBERG
  • Patent number: 11071023
    Abstract: A method by a wireless device (130) is described herein. The device (130), having determined that a measurement of a signal from a cell (121) is below a threshold, determines (301) that at least one of: i) a length of time since the device (130) last performed cell selection or reselection is above a second threshold, and ii) a number of times that neighbor cell measurements failed to trigger cell reselection is above a third threshold. Based on the determination, the device (130) resets (302) a strongest signal value of the signal measured after a last cell selection or reselection, to a lower value. The wireless device (130) determines (303) whether or not to measure another cell (122), based on whether or not a difference between: a) the reset value and b) a current measurement of the signal, is above a fourth threshold. The wireless device (130) then initiates (304) measuring the other cell (122) based on the determination.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: July 20, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Martin Van der Zee, Olof Liberg