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).

  • PRIORITIZED EARLY CSI REPORTING
    Publication number: 20230171809
    Abstract: Methods and devices for early CSI reporting by high priority devices, such as for mission critical services. Early reporting can be configured or otherwise indicated by a node for UEs having a particular status, access identity, and/or access category. Reported feedback can include a transmission rank indicator (RI), a precoder matrix indicator (PMI), and a channel quality indicator (CQI) for a codeword.
    Type: Application
    Filed: April 28, 2021
    Publication date: June 1, 2023
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Zhipeng LIN, Jingya LI, Henrik SAHLIN
  • DYNAMIC RELOCATION OF NODES IN A CELLULAR NETWORK
    Publication number: 20230171608
    Abstract: Systems and methods for relocating network nodes are provided herein. A network node can determine that relocation of at least one access node in the access network is required. An access node, such an IAB node with mobile capabilities, canbe selected to be relocated from a first position to a second position. Relocation messages and parameters can be signaled between the network and the access node.
    Type: Application
    Filed: March 19, 2021
    Publication date: June 1, 2023
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Florent MUNIER, Peter HAMMARBERG, Yazid LYAZIDI, Henrik SAHLIN
  • Cell re-selection measurement window in new radio
    Patent number: 11659458
    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: Grant
    Filed: September 3, 2021
    Date of Patent: May 23, 2023
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON
    Inventors: Pradeepa Ramachandra, Wei Shen, Johan Rune, Henrik Sahlin
  • Network architecture, methods, and devices for a wireless communications network
    Patent number: 11652562
    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: December 31, 2020
    Date of Patent: May 16, 2023
    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, Häkan 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, Niklas Johansson, Martin 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 Muller, 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
  • IMPROVING PHYSICAL RANDOM-ACCESS CHANNEL (PRACH) ROBUSTNESS AGAINST INTERFERENCE
    Publication number: 20230143073
    Abstract: Embodiments include methods, performed by a network node, for configuring a physical random-access channel (PRACH) of a cell in a time-division-duplexed (TDD) radio access network (RAN). The methods include determining an increase in a level of remote interference in the cell and, in response to determining the increase, selecting a first PRACH configuration from a first subset of available PRACH configurations. The first subset of available PRACH configurations can be more robust against remote interference than a second subset of the available PRACH configurations, and the first subset can be exclusive of the second subset. The methods also include transmitting, to one or more user equipment (UEs) first information indicating that the first PRACH configuration should be used for accessing the cell via the PRACH. Embodiments also include complementary methods performed by UEs, as well as network nodes and UEs configured to perform such methods.
    Type: Application
    Filed: September 2, 2019
    Publication date: May 11, 2023
    Inventors: Jingya LI, Naga Vishnu Kanth IRUKULAPATI, Sebastian FAXÉR, Henrik SAHLIN, Mårten SUNDBERG
  • Candidate link locating by a wireless terminal
    Patent number: 11647447
    Abstract: A link locating assisting device in a wireless communication network (10) obtains search limitation data concerning the wireless communication network and sends the search limitation data (SLD) to the wireless terminal (12) via a serving network node (14) and a serving link (SLK) for use in obtaining limitations for limiting a search for a set of candidate links (CLK1, CLK2, CLK3). The wireless terminal (12) obtains the search limitation data (SLD), sets limitations for a link search based on the search limitation data, search for candidate links starting with a current link search setting used with the serving link (SLK), and continues searching for candidate links with an offset from the current link search setting that grows with every search until the search limitations have been met.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: May 9, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Andres Reial, Icaro L. J. da Silva, Johan Rune, Henrik Sahlin
  • Random Access Preamble Slot Allocation
    Publication number: 20230119731
    Abstract: An example method for transmitting a random access preamble comprises selecting (502) a random access preamble configuration from a plurality of predetermined random access preamble configurations. The method further includes determining (504) a time interval in which to transmit the random access preamble. The method further comprises transmitting (506) the random access preamble according to the selected random access preamble configuration. Each of the plurality of random access preamble configurations comprises a combination of (a) a single root sequence from a predetermined set of one or more root sequences, (b) a single cyclic shift of a predetermined plurality of cyclic shifts for the root sequence, and (c) a single starting position of two or more predetermined starting positions within time intervals allocated for random access preamble transmission.
    Type: Application
    Filed: December 19, 2022
    Publication date: April 20, 2023
    Inventors: Andres Reial, Henrik Sahlin, Oskar Mauritz
  • Method and device for two-step random accessing
    Patent number: 11632805
    Abstract: A method and device for two-step random accessing. The method includes transmitting a random access preamble and a data block on a time-frequency resource to a network device; and receiving a response message for the random accessing from the network device. The data block is encoded with an orthogonal cover code and/or a cyclic shift, and the data block comprises data information and a reference signal associated with the data information. Therefore, resource efficiency is improved significantly for an associated data message following a random access preamble with endurable minor performance degradation.
    Type: Grant
    Filed: April 15, 2021
    Date of Patent: April 18, 2023
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Jinhua Liu, Henrik Sahlin, Naga Vishnu Kanth Irukulapati
  • Signaling of transmissions with shortened TTI
    Patent number: 11632781
    Abstract: The disclosure relates to signalling of transmissions with shortened TTI. The disclosure further relates to an RBS and a method performed at the RBS of scheduling resources for a wireless communication device. The disclosure still further relates to a wireless communication device and a method performed at the wireless communication device of being granted data transmission or data reception. In a first aspect of the disclosure, a method performed at an RBS is provided for scheduling resources for a wireless communication device including indicating a grant of a resource for the wireless communication device to transmit or receive data based on DCI and a position of the DCI within a data frame of a downlink control channel.
    Type: Grant
    Filed: March 1, 2021
    Date of Patent: April 18, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Jingya Li, Laetitia Falconetti, Henrik Sahlin, Gustav Wikström
  • Systems and methods for phase noise tracking reference signal sequence generation using demodulation reference signals
    Patent number: 11627028
    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 PNT-RS in the subcarrier. The data transmission is transmitted using the DMRS resulting signal and the PNT-RS.
    Type: Grant
    Filed: April 20, 2022
    Date of Patent: April 11, 2023
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Martin Hessler, Robert Baldemair, Lars Lindbom, Henrik Sahlin, Niclas Wiberg
  • Uplink subframe shortening in time-division duplex (TDD) systems
    Patent number: 11622370
    Abstract: A guard period for switching between uplink and downlink subframes is created by shortening an uplink subframe, i.e., by not transmitting during one or more symbol intervals at the beginning of the subframe interval. A grant message includes signaling indicating when a shortened subframe should be transmitted. An example method is implemented in a first wireless node configured to transmit data in transmit subframes occurring at defined subframe intervals and having a predetermined number of symbol intervals. This example method includes determining that a transmit subframe is to be shortened, relative to the predetermined number of symbol intervals and, in response to this determination, shortening transmission of the transmit subframe by not transmitting during a beginning portion of the subframe interval for the transmit subframe and transmitting during the remainder of the subframe interval.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: April 4, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Henrik Sahlin, Johan Furuskog, Stefan Parkvall, Qiang Zhang
  • METHOD AND APPARATUS FOR CONFIGURING BEAMFORMING OPERATIONS IN A WIRELESS COMMUNICATION NETWORK
    Publication number: 20230098741
    Abstract: A wireless communication device transmits beam sweeping information that indicates a beam sweeping property of the device, and a network node in an associated wireless communication network configures transmission or reception beamforming with respect to the device at one or more Transmission/Reception (TRPs) in the network, based on the beamforming property. Among the various advantages flowing from configuring network-side beamforming for the device in view of the beamforming property, the network need not configure its beamforming operations according to worst-case or minimum-capability assumptions for the device, and, instead tailors its transmission or reception beamforming in dependence on the beamforming property of the device.
    Type: Application
    Filed: August 5, 2022
    Publication date: March 30, 2023
    Inventors: Andres Reial, Icaro L.J. Da Silva, Johan Rune, Henrik Sahlin
  • Wireless device, a network node and methods therein for reporting channel state information (CSI) in a radio communications network
    Patent number: 11606800
    Abstract: A method performed by a wireless device (121, 122) for determining Channel State Information, CSI, estimates to be transmitted in a CSI report for the wireless device (121, 122) to a network node (110) in a radio communications network (100) is provided. The wireless device (121, 122) receives a message comprising an indication to use CSI estimates corresponding to a determined period of time. In response to said message, the wireless device (121, 122) determines CSI estimates to be used in the CSI report to the network node (110) according to the received indication. A wireless device (121, 122) is also described. A network node (110) and method therein for controlling CSI estimates transmitted by one or more wireless devices (121, 122) in CSI reports to the network node (110) in a radio communications network (100) are also provided.
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: March 14, 2023
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Mattias Frenne, Qiang Zhang, Henrik Sahlin, Stefan Parkvall, Håkan Andersson, Johan Furuskog
  • Mechanism to trigger adaptive transmission for vulnerable road users (VRU)
    Patent number: 11585947
    Abstract: Systems, methods, devices, and computer program products are provided. Operations thereof include sending, by a first system and to a user equipment, an activation notification that activates a dangerous area and causes the user equipment to increase a reporting granularity corresponding to a location of the user equipment. The dangerous area corresponds to an area that includes a vehicle operating therein. The reporting granularity is increased relative to a first reporting granularity. Operations include receiving, from the user equipment, location reporting data that is provided at the increased granularity and sending, to a second system, a first notification that corresponds to determining that the Vulnerable Road User (VRU) will be in the dangerous area.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: February 21, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Henrik Sahlin, Wanlu Sun, Stefano Sorrentino
  • Methods, network nodes, and computer programs for transmit timing adjustment
    Patent number: 11569891
    Abstract: There is provided mechanisms for transmit time adjustment. A method is performed by a second network node. The method comprises obtaining an indication of a need for transmit time adjustment with a first network node during ongoing communication with the first network node. The method comprises providing a first notification to at least one third network node to adjust its receive timing for receiving a signal from the second network node as part of ongoing communication with the second network node. The method comprises adjusting transmit timing for transmitting a first signal to the first network node as part of the ongoing communication with the first network node and for transmitting at least one second signal to the at last one third network node as part of the ongoing communication with the at least one third network node.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: January 31, 2023
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Mona Hashemi, Henrik Sahlin, Per-Erik Eriksson, Behrooz Makki, Lei Bao
  • RANDOM-ACCESS RESPONSE WITH ANALOG BEAMFORMING
    Publication number: 20230028292
    Abstract: A system and method of Random-Access Response, RAR, messaging when a base station employs narrow beamforming. Multiple RAR messages are successively transmitted from the base station to a User Equipment, UE, before any response to a RAR message is received from the UE. Thus, despite any calibration mismatch between Uplink, UL, and Downlink, DL, beams in the beamformed system, a RAR message is not only received by the UE, but is received over the most-suitable DL beam for that UE. Each RAR message may contain a message-specific scheduling-delay indicator in the UL grant carried in the RAR message to provide an adjustable time delay for the UE's uplink transmission scheduled by the UL grant. Multiple RAR transmissions can schedule a single UL transmission at a specific time instance or different UL transmissions at different time intervals. The UE may report to the base station the best DL RAR transmission detected by the UE.
    Type: Application
    Filed: October 1, 2022
    Publication date: January 26, 2023
    Inventors: Johan Furuskog, Henrik Sahlin, Andreas Bergstrom, Hakan Andersson, Niclas Wiberg, Qiang Zhang
  • Random access preamble slot allocation
    Patent number: 11563544
    Abstract: An example method for transmitting a random access preamble comprises selecting (502) a random access preamble configuration from a plurality of predetermined random access preamble configurations. The method further includes determining (504) a time interval in which to transmit the random access preamble. The method further comprises transmitting (506) the random access preamble according to the selected random access preamble configuration. Each of the plurality of random access preamble configurations comprises a combination of (a) a single root sequence from a predetermined set of one or more root sequences, (b) a single cyclic shift of a predetermined plurality of cyclic shifts for the root sequence, and (c) a single starting position of two or more predetermined starting positions within time intervals allocated for random access preamble transmission.
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: January 24, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Andres Reial, Henrik Sahlin, Oskar Mauritz
  • RANDOM ACCESS PROCEDURE FOR LATENCY REDUCTION
    Publication number: 20230018487
    Abstract: Certain embodiments disclose a method in a wireless device. The wireless device receives a location of a time and/or frequency resource of a first Physical Random Access Channel (PRACH) from a network node. The wireless device receives a location of a time and/or frequency resource of a second PRACH. Furthermore, the wireless device transmits a first random access attempt via the first PRACH and transmits a second random access attempt via the second PRACH. The first PRACH and the second PRACH each have an associated preamble, and wherein the second PRACH preamble has a different length than the first PRACH preamble.
    Type: Application
    Filed: September 19, 2022
    Publication date: January 19, 2023
    Inventors: Tuomas Tirronen, Osman Nuri Can Yilmaz, Helka-Liina Määttänen, Henrik Sahlin
  • Method, terminal device and network device for time advance adjustment
    Patent number: 11523361
    Abstract: Methods, network nodes, and terminal devices are disclosed along with associated host computers and communication systems for providing over-the-top services. A method comprises receiving a time advance, TA, command from a network node; 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: January 21, 2022
    Date of Patent: December 6, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Jinhua Liu, Stefan Parkvall, Robert Baldemair, Mats Folke, Henrik Enbuske, Min Wang, Jan Christoffersson, Henrik Sahlin
  • METHOD AND APPARATUS FOR BEAMFORMING CONTROL IN A WIRELESS COMMUNICATION NETWORK
    Publication number: 20220386141
    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: Application
    Filed: April 14, 2022
    Publication date: December 1, 2022
    Inventors: Andres Reial, Icaro L.J. Da Silva, Johan Rune, Henrik Sahlin