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: 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
  • Patent number: 11044750
    Abstract: Methods, wireless device (120; 400) and wireless communication network (100), such as a network node (110; 600) thereof, for managing downlink signal information. The downlink signal information being information about signal quality and/or signal strength received by the wireless device (120) in a downlink. The wireless device (120) sends (203; 302), to the wireless communication network (100), a message indicating said obtained downlink signal information and which message is associated with the wireless device (120) requesting access to the wireless communication network (100). The downlink information being indicated in the message by a range that indicates how much the obtained downlink signal information exceeds a certain threshold. The range is determined based on a certain factor that the wireless communication network (100) has informed the wireless device (120) about.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: June 22, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Olof Liberg, John Walter Diachina, Stefan Eriksson Löwenmark, Mårten Sundberg
  • Publication number: 20210184802
    Abstract: A radio device (110) and/or network node (105) support multiple HARQ processes. In particular, responsive to the radio device (110) receiving a resource grant for a first HARQ process, the radio device (110) starts or restarts a timer that configures the radio device (110) to monitor for a resource grant of a second HARQ process. Additionally or alternatively, the network node (105) transmits a resource grant for a first HARQ process and a resource grant for a second HARQ process to the same radio device (110).
    Type: Application
    Filed: January 29, 2018
    Publication date: June 17, 2021
    Inventors: Andreas Höglund, Olof Liberg, Yuhang Liu, Oscar Ohlsson, Béla Rathonyi, Mikael Wittberg
  • Patent number: 11026161
    Abstract: Methods and apparatus are proposed for controlling a radio access network connection to a telecommunications network. In order to enable resource based access barring a wireless terminal performs a delay in proceeding with a radio network access procedure based on an obtained indication of access barring. The access barring is a resource based access barring; based on the resource usage of a wireless terminal.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: June 1, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Olof Liberg, Mârten Sundberg
  • Publication number: 20210144753
    Abstract: An example method in a wireless device operating in a wireless network comprises generating a random access preamble signal and transmitting the random access preamble signal. The generated random access preamble signal comprises a random access symbol group that comprises a plurality of consecutive symbols, where each of the plurality of consecutive symbols being modulated on a corresponding subcarrier frequency and each of the plurality of consecutive symbols corresponding to a truncated sinusoid of 3.75/N kHz, with N>1.
    Type: Application
    Filed: January 18, 2021
    Publication date: May 13, 2021
    Inventors: Xingqin Lin, Olof Liberg
  • Patent number: 11006320
    Abstract: A Radio Network Node, RNN, (106) and a method therein for load balancing in a wireless communications network (100). The RNN is configured to communicate with a wireless device (108) supporting both normal coverage and extended coverage. The RNN and the wireless device are operating in the wireless communications network. The RNN determines an indication informing the wireless device that it, when in normal coverage, is to monitor one of a downlink legacy resource and an extended coverage resource for information and/or is to use one of an uplink legacy resource and an extended coverage resource when accessing the wireless communications network. Further, the RNN transmits the indication to the wireless device.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: May 11, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jens Bergqvist, Olof Liberg, Paul Schliwa-Bertling, Mårten Sundberg
  • Patent number: 10966238
    Abstract: A method performed by a wireless device (230) is described herein. The method is for handling grant use. The wireless device (230) operates in a wireless communication network (200). The wireless device (230) receives (401), from a network node (210) operating in the wireless communication network (200), a first message granting the wireless device (230) at least two uplink transmissions. The wireless device (230) indicates (402), to the network node (210), on time-frequency resources indicated in a first granted uplink transmission of the at least two uplink transmissions, whether or not a second granted uplink transmission of the at least two uplink transmissions is to be used by the wireless device (230).
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: March 30, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Andreas Höglund, Olof Liberg, Tuomas Tirronen, Emre Yavuz
  • Publication number: 20210091891
    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: Application
    Filed: April 18, 2019
    Publication date: March 25, 2021
    Inventors: Mai-Anh Phan, David Sugirtharaj, Emma Wittenmark, Oskar Drugge, Olof Liberg
  • Publication number: 20210091365
    Abstract: A user equipment is configured for operation in a narrowband wireless communication system. The user equipment is configured to detect receipt of a narrowband positioning reference signal 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. The user equipment is also configured to perform a positioning measurement using the narrowband positioning reference signal.
    Type: Application
    Filed: December 9, 2020
    Publication date: March 25, 2021
    Inventors: Xingqin Lin, Johan Bergman, Fredrik Gunnarsson, Olof Liberg, Sara Modarres Razavi, Henrik Rydén, Yutao Sui, Yi-Pin Eric Wang
  • Patent number: 10917912
    Abstract: An example method in a wireless device operating in a wireless network comprises generating (1210) a random access preamble signal and transmitting (1220) the random access preamble signal. The generated random access preamble signal comprises a random access symbol group that comprises a plurality of consecutive symbols, where each of the plurality of consecutive symbols being modulated on a corresponding subcarrier frequency and each of the plurality of consecutive symbols corresponding to a truncated sinusoid of 3.75/N kHz, with N>1.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: February 9, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Xingqin Lin, Olof Liberg
  • Publication number: 20210022106
    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: October 1, 2020
    Publication date: January 21, 2021
    Inventors: Sara MODARRES RAZAVI, Johan BERGMAN, Åke BUSIN, Fredrik GUNNARSSON, Olof LIBERG, Xingqin LIN, Henrik RYDÈN, Yutao SUI, Martin VAN DER ZEE
  • Publication number: 20210014901
    Abstract: A method is performed by a network node. The method comprises determining to use an extended random access preamble identifier, RAPID, for a random access procedure with a wireless device. The method further comprises transmitting a medium access control, MAC, protocol data unit, PDU. The MAC PDU comprises a header and one or more random access responses, RARs. Each RAR is associated with a corresponding subheader within the header of the MAC PDU. The random access procedure is associated with a first RAR of the one or more RARs and the extended RAPID for the random access procedure is indicated by a combination of one or more bits in the first RAR and one or more bits in the subheader that corresponds to the first RAR.
    Type: Application
    Filed: April 4, 2019
    Publication date: January 14, 2021
    Inventors: Andreas HÖGLUND, Olof LIBERG, Yutao SUI, Emre YAVUZ, Antti RATILAINEN
  • Patent number: 10890646
    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 incudes 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: Grant
    Filed: November 14, 2017
    Date of Patent: January 12, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Xingqin Lin, Fredrik Gunnarsson, Olof Liberg, Sara Modarres Razavi, Henrik Rydén, Iana Siomina
  • Patent number: 10887063
    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: Grant
    Filed: September 29, 2017
    Date of Patent: January 5, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Xingqin Lin, Johan Bergman, Fredrik Gunnarsson, Olof Liberg, Sara Modarres Razavi, Henrik Rydén, Yutao Sui, Yi-Pin Eric Wang
  • Patent number: 10871545
    Abstract: Embodiments herein relate to a method performed by a wireless device (10) for handling positioning of the wireless device in a wireless communications 5 network (1). The wireless device (10) receives assistance data from a location node (15), or a radio network node (12), in the wireless communications network, wherein the assistance data comprises a positioning configuration comprising a start and/or stop information indicating when positioning reference signal, PRS, transmissions from the radio network node are started and/or ended. The wireless device measures, based on the assistance data, a positioning information of PRSs; and transmits the measured positioning information to the location node or the radio network node.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: December 22, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Sara Modarres Razavi, Åke Busin, Fredrik Gunnarsson, Olof Liberg, Xingqin Lin, Gino Masini, Henrik Rydén, Yutao Sui
  • Publication number: 20200396045
    Abstract: Methods and apparatuses are disclosed for communicating to a wireless device (WD) a DL-to-UL frequency offset (or frequency shift) that may need to be applied. For example, a method implemented in a wireless device (WD) is provided. The method comprises: receiving, from the network node, an indication of a frequency offset; and applying the received frequency offset; wherein the WD is configured to operate on a narrow-band Internet of Things (NB-IoT) carrier in a New Radio (NR) carrier.
    Type: Application
    Filed: February 25, 2019
    Publication date: December 17, 2020
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Yi-Pin Eric WANG, Gerardo Agni MEDINA ACOSTA, Johan BERGMAN, Olof LIBERG, Kazuyoshi UESAKA, Yutao SUI, Talha KHAN
  • Publication number: 20200374099
    Abstract: According to certain embodiments, a method (500) by a wireless device (110) includes receiving information relating to a Narrowband Secondary Synchronization Signal (NSSS) transmit diversity scheme. The information indicates a number of NSSS occasions that use different NSSS transmit diversity configurations. Based on the NSSS transmit diversity scheme, at least one measurement is performed across NSSS occasions.
    Type: Application
    Filed: November 23, 2018
    Publication date: November 26, 2020
    Inventors: Olof Liberg, Joakim AXMON, Mats FOLKE, Andreas HÖGLUND, Yutao SUI, Martin VAN DER ZEE, Yi-Pin Eric WANG
  • Publication number: 20200367147
    Abstract: A wireless device (14) is configured for use in a wireless communication network (10). The wireless device (14) is configured to receive, from the wireless communication network (10), information (22) that configures the wireless device (14) to restrict uplink access by the wireless device (14) to the wireless communication network (10), unless and until the wireless device (14) is configured otherwise by other information from the wireless communication network (10). The information (22) may for example indicate that uplink access by the wireless device (14) to the wireless communication network (10) is not allowed. Regardless, the wireless device (14) is configured to restrict uplink access by the wireless device (14) to the wireless communication network (10) in accordance with the received information (22).
    Type: Application
    Filed: December 11, 2018
    Publication date: November 19, 2020
    Inventors: Andreas Höglund, Johan Bergman, Magnus Karlsson, Olof Liberg, Yutao Sui, Emre Yavuz
  • Publication number: 20200359419
    Abstract: Techniques for performing random access in a wireless communications system are presented. For instance, the present disclosure includes 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. The method also includes determining another transmission power with which the UE (102) is to transmit a connection request in the random access procedure, where the other transmission power is determined as a function of the target receive power with which the random access preamble transmission was targeted to be received.
    Type: Application
    Filed: May 31, 2018
    Publication date: November 12, 2020
    Inventors: Olof Liberg, Andreas Höglund, Yutao Sui
  • Patent number: 10834695
    Abstract: According to certain embodiments, a method is disclosed for use in a wireless device that is configured as a Narrowband Internet-of-Things (NB-IoT) device or a machine-type-communication (MTC) device. The method comprises determining at least one parameter related to positioning. The at least one parameter is based on a capability of the wireless device that relates to observed time difference of arrival (OTDOA) positioning with NB-IoT or MTC. The method further comprises using the determined at least one parameter related to positioning.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: November 10, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Sara Modarres Razavi, Johan Bergman, Fredrik Gunnarsson, Olof Liberg, Xingqin Lin, Henrik Rydén, Iana Siomina, Yutao Sui