Patents by Inventor Henrik Sahlin

Henrik Sahlin 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: 11324052
    Abstract: Systems and methods are described herein to permit the adaptation of the time advance range in cellular communication systems. An exemplary method includes receiving a physical random access channel (PRACH) preamble format from a network node, deriving a timing advance (TA) range for the wireless device based on the PRACH preamble format, and transmitting a PRACH preamble sequence to the network node. Associated wireless devices and network nodes are included.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: May 3, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Naga Vishnu Kanth Irukulapati, Henrik Sahlin
  • Patent number: 11324023
    Abstract: There is provided mechanisms for providing configuration for uplink transmission to a wireless device. A method is performed by a network node. The method comprises transmitting a message comprising configuration for uplink transmission with short TTI operation. The method comprises transmitting a fast grant comprising scheduling of an uplink short TTI for the wireless device.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: May 3, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Henrik Sahlin, Jingya Li, Gustav Wikström, Niklas Andgart, Laetitia Falconetti, Daniel Larsson
  • Patent number: 11323300
    Abstract: A user equipment (910) is provided for use in a cellular network. The user equipment includes a transceiver (1010), a processor (1020), and a memory (1030). The user equipment (910) is configured to determine, for a data transmission, a mapping form a demodulation reference signal (DMRS) to a PNT-RS. A DMRS resulting signal is generated from a subset of DMRS for a first resource element in a subcarrier. The DMRS resulting signal is copied from the first resource element to a second resource element assigned to the PNT-RS in the subcarrier. The data transmission is transmitted using the DMRS resulting signal and the PNT-RS.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: May 3, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Martin Hessler, Robert Baldemair, Lars Lindbom, Henrik Sahlin, Niclas Wiberg
  • Publication number: 20220132451
    Abstract: The present disclosure relates to transmitting synchronization signals and in particular to so called beam sweep. In particular the disclosure relates to methods for providing synchronization using synchronization sequences that are transmitted at different points in time. The disclosure also relates to corresponding devices and computer programs. A method in a network node, for transmitting synchronization sequences of a synchronization signal to one or more receiving wireless devices, comprises determining multiple synchronization sequences, such that each synchronization sequence comprises a respective timing indication, whereby each synchronization sequence enables determination of a time of an event in a receiving wireless device and transmitting the synchronization sequences to the one or more wireless devices, at different points in time.
    Type: Application
    Filed: January 5, 2022
    Publication date: April 28, 2022
    Inventors: Johan Axnäs, Kumar Balachandran, Icaro Leonardo Da Silva, Dennis Hui, Andres Reial, Johan Rune, Henrik Sahlin
  • Patent number: 11316639
    Abstract: According to certain embodiments, a user equipment (810) is provided for use in a cellular network. The user equipment (810) may include a transceiver (910), a processor (920), and a memory (930). The user equipment (810) may be configured to acquire a Demodulation Reference Signal (DMRS) configuration. A mapping is determined from the DMRS configuration to a phase noise tracking reference signal (PNT-RS). A channel estimate is performed using the DMRS configuration. Phase noise estimation and compensation is performed based on the PNT-RS by using the mapping and the channel estimate.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: April 26, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Martin Hessler, Robert Baldemair, Lars Lindbom, Henrik Sahlin
  • Patent number: 11316638
    Abstract: A user equipment (910) is provided for use in a cellular network. The user equipment includes a transceiver (1010), a processor (1020), and a memory (1030). The user equipment (910) is configured to determine, for a data transmission, a mapping form a demodulation reference signal (DMRS) to a PNT-RS. A DMRS resulting signal is generated from a subset of DMRS for a first resource element in a subcarrier. The DMRS resulting signal is copied from the first resource element to a second resource element assigned to the PNT-RS in the subcarrier. The data transmission is transmitted using the DMRS resulting signal and the PNT-RS.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: April 26, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Martin Hessler, Robert Baldemair, Lars Lindbom, Henrik Sahlin, Niclas Wiberg
  • Patent number: 11310674
    Abstract: A base station or other network node configures a network transmission in dependence on a directional scanning reception ability of a wireless communication device targeted by the transmission. An example transmission configuration is selecting or restricting which Transmission/Reception Point to use for the transmission or selecting or restricting the beamforming configuration to use for the transmission. The device complements operations in the wireless communication network by indicating its directional scanning reception ability in initial signaling, such as used for random access, or in Radio Resource Control signaling, or both.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: April 19, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (publ)
    Inventors: Andres Reial, Icaro L. J. Da Silva, Johan Rune, Henrik Sahlin
  • Patent number: 11284367
    Abstract: Methods, network device and terminal device are disclosed time advance adjustment. A method comprises receiving a time advance, TA, command from a network device; determining a TA granularity or range; and determining a TA value based at least partly on the TA command and the TA granularity or range, wherein different numerologies are configured for at least two carriers and/or at least two bandwidth parts (BWPs) in one carrier, wherein the at least two carriers and/or the at least two BWPs serve the terminal device and/or the terminal device supports at least one numerology.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: March 22, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Jinhua Liu, Stefan Parkvall, Robert Baldemair, Mats Folke, Henrik Enbuske, Min Wang, Jan Christoffersson, Henrik Sahlin
  • Publication number: 20220086900
    Abstract: A method in a network node for managing random-access procedures with a plurality of wireless devices. The method comprising transmitting an indication of a modulation format to one or more of the plurality of wireless devices to configure the modulation format for a random access message (3) transmission from the one or more wireless devices.
    Type: Application
    Filed: November 23, 2021
    Publication date: March 17, 2022
    Inventors: Henrik SAHLIN, Robert BALDEMAIR, Erik DAHLMAN, Stefan PARKVALL
  • Publication number: 20220070831
    Abstract: Systems and methods are disclosed for transmission and reception of an uplink grant during a gap created in radio resources assigned by a previous multiple Transmit Time Interval (multi-TTI) uplink grant in a system operating according to a Time Division Duplexing (TDD) scheme. In one embodiment, a method of operation of a wireless device operating according to a TDD scheme in a cellular communications network includes: receiving a first uplink grant from a radio network node that assigns first radio resources for a first multiple transmit time interval uplink transmission, the first radio resources comprising a set of consecutive subframes; and interrupting an uplink transmission on the first radio resources during a gap in the first radio resources assigned for the first multiple transmit time interval uplink transmission, the gap comprising a time domain gap within the set of consecutive subframes.
    Type: Application
    Filed: November 10, 2021
    Publication date: March 3, 2022
    Inventors: Henrik Sahlin, Mattias Frenne, Johan Furuskog, Stefan Parkvall, Qiang Zhang
  • Patent number: 11259296
    Abstract: There is disclosed a User Equipment for a MulteFire wireless communication network. The User Equipment comprises processing circuitry and a transmitter, the User Equipment being adapted for utilizing the processing circuitry and the transmitter for performing a Listen-Before-Talk (LBT) procedure for one or more transmission bandwidths; transmitting Physical Uplink Shared CHannel (PUSCH) signaling in a PUSCH subframe on one or more interlaces within the one or more transmission bandwidths; and transmitting Sounding Reference Signaling on the one or more interlaces in the PUSCH subframe.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: February 22, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Meng Wang, Jung-Fu Cheng, Fredrik Lindqvist, Amitav Mukherjee, Henrik Sahlin
  • Patent number: 11252686
    Abstract: The present disclosure relates to transmitting synchronization signals and in particular to so called beam sweep. In particular the disclosure relates to methods for providing synchronization using synchronization sequences that are transmitted at different points in time. The disclosure also relates to corresponding devices and computer programs. A method in a network node, for transmitting synchronization sequences of a synchronization signal to one or more receiving wireless devices, comprises determining multiple synchronization sequences, such that each synchronization sequence comprises a respective timing indication, whereby each synchronization sequence enables determination of a time of an event in a receiving wireless device and transmitting the synchronization sequences to the one or more wireless devices, at different points in time.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: February 15, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Johan Axnäs, Kumar Balachandran, Icaro L. J. da Silva, Dennis Hui, Andres Reial, Johan Rune, Henrik Sahlin
  • Patent number: 11252002
    Abstract: There is disclosed a radio node for a wireless communication network, the radio node being adapted for processing reference signaling based on a coding, the coding being based on a Golay sequence. The disclosure also pertains to related devices and methods.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: February 15, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Henrik Sahlin, Ansuman Adhikary, Johan Axnäs, Robert Baldemair, Andres Reial
  • Patent number: 11252736
    Abstract: A method for transmit timing adjustment by a second network node includes obtaining an indication of beam link failure of a current beam that is used for ongoing communication with a first network node. The method further includes switching over to a backup beam of the current beam for continuing the ongoing communication with the first network node, and adjusting transmit timing for transmitting a signal as part of the ongoing communication in the backup beam based on earlier communicated timing information with the first network node before making any transmission of the signal on the backup beam.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: February 15, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mona Hashemi, Henrik Sahlin, Per-Erik Eriksson, Behrooz Makki, Lei Bao, Andreas Nilsson, Mikael Coldrey
  • Patent number: 11240771
    Abstract: The present disclosure relates to transmitting synchronization signals and in particular to so called beam sweep. In particular the disclosure relates to methods for providing synchronization using synchronization sequences that are transmitted at different points in time. The disclosure also relates to corresponding devices and computer programs. A method in a network node, for transmitting synchronization sequences of a synchronization signal to one or more receiving wireless devices, comprises determining multiple synchronization sequences, such that each synchronization sequence comprises a respective timing indication, whereby each synchronization sequence enables determination of a time of an event in a receiving wireless device and transmitting the synchronization sequences to the one or more wireless devices, at different points in time.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: February 1, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Johan Axnäs, Kumar Balachandran, Icaro L. J. da Silva, Dennis Hui, Andres Reial, Johan Rune, Henrik Sahlin
  • Publication number: 20220030635
    Abstract: The present invention relates to a user terminal, UE, in a wireless communication system (1). The user terminal (4a, 4b) comprises a receiver unit (5a, 5b), a transmitter unit (6a, 6b) configured to transmit data in transmit sub-frames occurring at defined sub-frame intervals, and a control unit (7a, 7b) configured to control the receiver circuit (5a, 5b) and the transmitter circuit (6a, 6b). The control unit (7a, 7b) is also configured to create a PRACH, Physical Random-Access Channel, preamble (27) as an uplink transmission to a node (2) that is arranged to receive communication from the user terminal in said sub-frames. This communication comprises OFDM, Orthogonal Frequency-Division Multiplexing, based symbols (20). The control unit (7a, 7b) is configured to create each PRACH preamble (27) such that is comprises a sequence of a plurality of identical random access sequences (s(n)), where each random access sequence (s(n)) has the same length in time as each one of the OFDM based symbols (20a, 20b, 20c).
    Type: Application
    Filed: October 7, 2021
    Publication date: January 27, 2022
    Inventors: Henrik Sahlin, Håkan Andersson, Robert Baldemair, Johan Furuskog, Peter Nauclér, Stefan Parkvall
  • Patent number: 11234147
    Abstract: This disclosure pertains to a wireless device for a Radio Access Network, the wireless device being adapted for transmitting sampling information indicating a sample determining device used by the wireless device for preparing a measurement report. The disclosure also pertains to related methods and devices.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: January 25, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Martin Hessler, Henrik Sahlin, Zhao Wang, Karl Werner
  • Publication number: 20220022186
    Abstract: There is disclosed a method of operating a terminal (10) in a wireless communication network, the method comprising receiving and/or transmitting according to a transmission time interval, TTI, configuration, the TTI configuration indicating at least one short transmitting time interval having between one or two and seven symbols of duration in a subframe. There are also disclosed related methods and devices.
    Type: Application
    Filed: September 29, 2021
    Publication date: January 20, 2022
    Inventors: Henrik SAHLIN, Niklas ANDGART, Laetitia FALCONETTI, Daniel LARSSON, Jingya LI, Gustav Wikström
  • Publication number: 20210400546
    Abstract: A radio network node, such as a gNodeB (gNB), a User Equipment (UE) and a method, for configuring the UE for camping on a cell in a radio network for Synchronization Signal (SS) Blocks based cell re-selection measurements for RRC_IDLE and RRC_INACTIVE states. The method comprises providing information to the UE, including configuration parameters for a measurement window, the configuration parameters defining a window periodicity, offset and duration, for configuring the UE for the SS Blocks based cell re-selection measurements for RRC_IDLE and RRC_INACTIVE states. Radio Resource Control (RRC) signaling is used to convey the information to the UE prior to or in conjunction with switching the UE from RRC_CONNECTED state to RRC_INACTIVE or RRC_IDLE state, a RRCConnectionRelease message is used to convey the information to the UE and the information is also provided to the UE in system information (SI).
    Type: Application
    Filed: September 3, 2021
    Publication date: December 23, 2021
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Pradeepa RAMACHANDRA, Wei SHEN, Johan RUNE, Henrik SAHLIN
  • Publication number: 20210385813
    Abstract: The embodiments herein relate to timing advance offset for uplink/downlink switching in New Radio (NR). In one embodiment, there proposes a method in a wireless communication device, comprising: determining a timing advance (TA) offset for uplink/downlink switching, wherein the TA offset is at least based on the time offset requirement for uplink/downlink switching in different scenarios used in communication between the wireless communication device and a network node; applying the determined TA offset in the uplink communication from the wireless communication device to the network node. With embodiments herein, uplink/downlink switching time for NR is defined.
    Type: Application
    Filed: August 23, 2021
    Publication date: December 9, 2021
    Inventors: Naga Vishnu Kanth Irukulapati, Zhipeng Lin, Asbjörn Grövlen, Henrik Sahlin