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).

  • MECHANISM TO TRIGGER ADAPTIVE TRANSMISSION FOR VULNERABLE ROAD USERS (VRU)
    Publication number: 20210215830
    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 VRU will be in the dangerous area.
    Type: Application
    Filed: May 17, 2019
    Publication date: July 15, 2021
    Inventors: Henrik SAHLIN, Wanlu SUN, Stefano SORRENTINO
  • RANDOM ACCESS PREAMBLE TRANSMISSION USING BEAMFORMING
    Publication number: 20210212123
    Abstract: A method, system and wireless device for random access preamble transmission using beamforming are provided. A wireless device includes processing circuitry including a processor and a memory. The processing circuitry is configured to receive a synchronization signal block, SSB, determine a first beam configuration for reception based on at least part of the received SSB, estimate a reciprocity quality for the first beam configuration in a downlink and an uplink, determine a first random access channel, RACH, preamble transmission configuration based on the estimated reciprocity quality, and transmit a first random access, RA, preamble using the first RACH preamble transmission configuration.
    Type: Application
    Filed: June 13, 2018
    Publication date: July 8, 2021
    Inventors: Andres REIAL, Magnus ÅSTRÖM, Henrik SAHLIN
  • Random Access Preamble Slot Allocation
    Publication number: 20210212127
    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: March 4, 2021
    Publication date: July 8, 2021
    Inventors: Andres Reial, Henrik Sahlin, Oskar Mauritz
  • WIRELESS DEVICE, A NETWORK NODE AND METHODS THEREIN FOR REPORTING CHANNEL STATE INFORMATION (CSI) IN A RADIO COMMUNICATIONS NETWORK
    Publication number: 20210195606
    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: Application
    Filed: March 5, 2021
    Publication date: June 24, 2021
    Inventors: Mattias Frenne, Qiang Zhang, Henrik Sahlin, Stefan Parkvall, Håkan Andersson, Johan Furuskog
  • Systems and Methods for Phase Noise Tracking Reference Signal Sequence Generation Using Demodulation Reference Signals
    Publication number: 20210194744
    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: Application
    Filed: February 9, 2017
    Publication date: June 24, 2021
    Inventors: Martin HESSLER, Robert BALDEMAIR, Lars LINDBOM, Henrik SAHLIN, Niclas WIBERG
  • Sequence generation
    Patent number: 11044032
    Abstract: A controller generates a sequence by one of (a) splitting a base sequence into multiple equal-size segments and adding said segments elementwise, and (b) generating several cyclically shifted versions of a base sequence, adding the cyclically shifted versions together, and truncating said cyclically shifted versions.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: June 22, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Johan Axnäs, Robert Baldemair, Naga Vishnu Kanth Irukulapati, Andres Reial, Henrik Sahlin, Jianfeng Wang
  • Combining synchronization sequences of different lengths
    Patent number: 11044133
    Abstract: A system and method for generating a composite synchronization sequence in a communication system. In one embodiment, the apparatus is configured to provide a first synchronization sequence and a second synchronization sequence in a first domain, transform the first synchronization sequence and the second synchronization sequence into a second domain, and extend the first synchronization sequence and the second synchronization sequence in the second domain to a common length to produce an extended first synchronization sequence and an extended second synchronization sequence. The apparatus is also configured to transform the extended first synchronization sequence and the extended second synchronization sequence into the first domain, and multiply elementwise the extended first synchronization sequence by the extended second synchronization sequence in the first domain to obtain a composite synchronization sequence.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: June 22, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Johan Axnäs, Robert Baldemair, Naga Vishnu Kanth Irukulapati, Andres Reial, Henrik Sahlin
  • SIGNALING OF TRANSMISSIONS WITH SHORTENED TTI
    Publication number: 20210185716
    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: Application
    Filed: March 1, 2021
    Publication date: June 17, 2021
    Inventors: Jingya LI, Laetitia FALCONETTI, Henrik SAHLIN, Gustav WIKSTRÖM
  • METHODS AND DEVICES OPERATING WITH FINE TIMING REFERENCE SIGNALS TRANSMITTED OCCASIONALLY
    Publication number: 20210184822
    Abstract: Methods and devices enable a fine synchronization related to a data transmission on a physical channel. A fine timing reference signal is occasionally transmitted to the data transmission recipient using one of time-frequency resources in a recipient-specific pattern.
    Type: Application
    Filed: March 1, 2021
    Publication date: June 17, 2021
    Inventors: Robert BALDEMAIR, Eleftherios KARIPIDIS, Stefan PARKVALL, Henrik SAHLIN
  • Granting resources to a wireless device
    Patent number: 11039467
    Abstract: There is provided mechanisms for granting resources to a wireless device. A method is performed by a network node. The method comprises obtaining an indication for granting the resources to the wireless device. The method comprises transmitting, to the wireless device, a grant for the resources in a transmission time interval (sTTI) frequency band. The grant comprises an index, and the index identifies a position of the resources within the sTTI frequency band.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: June 15, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Niklas Andgart, Henrik Sahlin, Gustav Wikström
  • Payload transmission in a subframe
    Patent number: 11025382
    Abstract: There is provided mechanisms for transmitting payload in a subframe. A method is performed by a first network device. The method comprises obtaining a transport block size (TBS) value by accessing an array storing a plurality of TBS values. The TBS value is proportional to number of user data symbols in a subframe of a given subframe length. One and the same array is accessed regardless of the given subframe length. The method comprises transmitting a physical channel carrying payload in the subframe to a second network device. The amount of data in the payload is determined by the TBS value.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: June 1, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Henrik Sahlin, Jingya Li, Niklas Andgart
  • Method and device for two-step random accessing
    Patent number: 10999873
    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: September 21, 2017
    Date of Patent: May 4, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Jinhua Liu, Henrik Sahlin, Naga Vishnu Kanth Irukulapati
  • NR Broadcast Channel Transmission
    Publication number: 20210126821
    Abstract: The disclosure relates to a method performed by a wireless device, for receiving system information from a network node of a wireless communication system. The system information is received in a synchronization signal (SS) block of an SS burst set comprising at least one SS block. The system information is multiplexed with information providing a time index indicating which SS block of the SS burst set that is being received. The method comprises receiving the information providing the time index, and receiving the system information, which comprises descrambling the system information using a scrambling sequence generated based on the information providing the time index. The method also comprises determining an accuracy of the information providing the time index, based on an error-detection code related to the received system information. The disclosure also relates to corresponding network node method and apparatus.
    Type: Application
    Filed: November 5, 2020
    Publication date: April 29, 2021
    Inventors: Jianfeng Wang, Asbjörn Grövlen, Henrik Sahlin
  • Network Architecture, Methods, and Devices for a Wireless Communications Network
    Publication number: 20210126726
    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: Application
    Filed: December 31, 2020
    Publication date: April 29, 2021
    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, 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 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
  • NR broadcast channel transmission
    Patent number: 10992508
    Abstract: The disclosure relates to a method performed by a wireless device, for receiving system information from a network node of a wireless communication system. The system information is received in a synchronization signal (SS) block of an SS burst set comprising at least one SS block. The system information is multiplexed with information providing a time index indicating which SS block of the SS burst set that is being received. The method comprises receiving the information providing the time index, and receiving the system information, which comprises descrambling the system information using a scrambling sequence generated based on the information providing the time index. The method also comprises determining an accuracy of the information providing the time index, based on an error-detection code related to the received system information. The disclosure also relates to corresponding network node method and apparatus.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: April 27, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jianfeng Wang, Asbjörn Grövlen, Henrik Sahlin
  • Methods and devices operating with fine timing reference signals transmitted occasionally
    Patent number: 10992443
    Abstract: Methods and devices enable a fine synchronization related to a data transmission on a physical channel. A fine timing reference signal is occasionally transmitted to the data transmission recipient using one of time-frequency resources in a recipient-specific pattern.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: April 27, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Robert Baldemair, Eleftherios Karipidis, Stefan Parkvall, Henrik Sahlin
  • COST EFFICIENT PRACH DETECTION
    Publication number: 20210120593
    Abstract: A base station for detecting a Physical Random Access Channel (PRACH) transmission from a User Equipment device (UE) comprises a radio device and at least one additional device. The radio device comprises narrowband receivers respectively coupled to antenna elements of an antenna array. Each narrowband receiver is configured to receive a signal from a respective antenna element and process the signal to provide received symbols for a PRACH received via the respective antenna element. The radio device also comprises accumulation circuitry configured to, for each antenna element, accumulate a subset of the received symbols for the PRACH received via the antenna element to output a first averaged symbol for the PRACH received via the antenna element. The at least one additional device is configured to receive, from the radio device, the first averaged symbols and process the first averaged symbols to perform PRACH detection for one or more receive beams.
    Type: Application
    Filed: May 16, 2018
    Publication date: April 22, 2021
    Inventors: Torsten John Carlsson, Torbjörn Wigren, Henrik Sahlin
  • Signaling of transmissions with shortened TTI
    Patent number: 10980053
    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 of 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: September 25, 2017
    Date of Patent: April 13, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Jingya Li, Laetitia Falconetti, Henrik Sahlin, Gustav Wikström
  • Methods and devices operating with fine timing reference signals transmitted occasionally
    Patent number: 10965432
    Abstract: Methods and devices enable a fine synchronization related to a data transmission on a physical channel. A fine timing reference signal is occasionally transmitted to the data transmission recipient using one of time-frequency resources in a recipient-specific pattern.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: March 30, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Robert Baldemair, Eleftherios Karipidis, Stefan Parkvall, Henrik Sahlin
  • Downlink Subframe Shortening in Time-Division Duplex (TDD) Systems
    Publication number: 20210083834
    Abstract: A guard period for switching between uplink and downlink subframes is created by shortening a downlink subframe, i.e., by not transmitting during one or more symbol intervals at the end of the subframe. A grant message includes signaling indicating when a shortened subframe is being transmitted. An example method is implemented in a receiving node configured to receive data from a transmitting node in subframes having a predetermined number of symbol intervals. In an LTE system, this receiving node may be a UE, and the subframes are downlink subframes. This example method includes determining that a received subframe is to be shortened, relative to the predetermined number of symbol intervals and, in response to this determination, disregarding a last part of the received subframe by disregarding one or more symbols at the end of the received subframe when processing the received subframe.
    Type: Application
    Filed: November 12, 2020
    Publication date: March 18, 2021
    Inventors: Henrik Sahlin, Qiang Zhang, Johan Furuskog, Stefan Parkvall