Patents by Inventor Dennis Hui

Dennis Hui 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).

  • ERROR DETECTION IN COMMUNICATION SYSTEMS USING POLAR CODED DATA TRANSMISSION
    Publication number: 20220231703
    Abstract: A method of decoding a polar coded signal includes determining channel reliabilities for a plurality of polar coded bit channels in a data communication system including a plurality of frozen bit channels and non-frozen bit channels, selecting a frozen bit channel, calculating a likelihood value for a bit estimate associated with the frozen bit channel, generating a hard decision value for the bit estimate in response to the likelihood value, comparing the hard decision value for the bit estimate to a known value of a frozen bit transmitted on the frozen bit channel, in response to determining that the hard decision value for the bit estimate differs from the known value of the frozen bit transmitted on the frozen bit channel, updating an accumulated uncertainty, comparing the accumulated uncertainty to a threshold, and determining that a decoding error has occurred in response to the comparison.
    Type: Application
    Filed: April 11, 2022
    Publication date: July 21, 2022
    Inventors: Dennis Hui, Yufei Blankenship
  • Bit order of NR PBCH payload to enhance polar code performance
    Patent number: 11394489
    Abstract: Systems and methods are described herein that allow information carrying bits of a transmission block to be placed at higher-reliability positions prior to transmission. An exemplary method includes generating a set of payload bits to be encoded for transmission, wherein the set of payload bits includes at least one known bit, interleaving the set of payload bits to generate an interleaved set of payload bits, wherein the interleaved set includes the at least one known bit in a predetermined position in the interleaved set, providing the interleaved set to a cyclic redundancy check (CRC) encoder to generate CRC-interleaved set of payload bits, wherein the CRC-interleaved set includes the at least one known bit in a predetermined position within the CRC-interleaved set, and encoding the CRC-interleaved set for transmission to a wireless device. Associated network nodes and wireless devices are included.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: July 19, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Anders Wesslén, Dennis Hui, Yufei Blankenship
  • Adaptive selection and efficient storage of information bit locations for polar codes
    Patent number: 11394398
    Abstract: According to certain embodiments, a method for use in a transmitter comprises selecting an information set or sequence of information sets for polar encoding. The information set or sequence of information sets are selected from a plurality of information sets based on one or more system parameters and/or one or more link measurements. The method further comprises performing polar encoding for a plurality of data bits to yield encoded data. The polar encoding is performed according to the selected information set or sequence of information sets. The method further comprises transmitting the encoded data to a receiver.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: July 19, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Dennis Hui, Yufei Blankenship, Leefke Grosjean
  • Network architecture, methods, and devices for a wireless communications network
    Patent number: 11381445
    Abstract: Methods and apparatus in a fifth-generation wireless communications network, including an example method, in a wireless device, that includes determining a reporting quality threshold for a parameter related to channel state information (CSI); performing a measurement for each of a plurality of beams from a first predetermined set of beams for evaluation; evaluating the measurement for each of the plurality of beams against the reporting quality threshold; discontinuing the performing and evaluating of measurements in response to determining that the reporting quality threshold is met for one of the beams, such that one or more beams in the first predetermined set of beams are not measured and evaluated; and reporting, to the wireless communications network, CSI for the one of the beams.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: July 5, 2022
    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, 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, Martin Johansson, Niklas Johansson, Du Ho Kang, Eleftherios Karipidis, Patrik Karlsson, Ali S. Khayrallah, Caner Kilinc, Göran N. Klang, Sara Landström, Christina Larsson, Gen Li, Bo Lincoln, 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, Johan Nilsson, 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, Anders Wallén, 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
  • Random access preamble for minimizing PA backoff
    Patent number: 11368985
    Abstract: An example method in a user equipment comprises generating a random access preamble signal and transmitting the random access preamble signal. This generating of the random access preamble signal comprises generating a random access preamble signal comprising two or more consecutive preamble symbol groups, each preamble symbol group comprising a cyclic prefix portion and a plurality of identical symbols occupying a single subcarrier of the random access preamble signal. The single subcarrier for at least one of the preamble symbol groups corresponds to a first subcarrier frequency and the single subcarrier for an immediately subsequent one of the preamble symbol groups corresponds to a second subcarrier frequency.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: June 21, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Xingqin Lin, Ansuman Adhikary, Asbjörn Grövlen, Dennis Hui, Niklas Johansson, Yutao Sui, Mårten Sundberg, Yi-Pin Eric Wang
  • Soft decoding of rate-compatible polar codes
    Patent number: 11349502
    Abstract: A node receives transmissions associated with a given set of information bits, wherein each of the transmissions use a different polar code and share one or more information bits of the given set of information bits. The node determines, at each of a plurality of polar decoders of the node, soft information for each information bit included in an associated one of the transmissions, wherein each of the plurality of polar decoders is associated with a different transmission of the transmissions. The node provides, from each polar decoder of the plurality to one or more other polar decoders of the plurality, the determined soft information for any information bits shared by their respective associated transmissions, and uses the provided soft information in an iterative decoding process to decode one or more of the received transmissions.
    Type: Grant
    Filed: November 3, 2020
    Date of Patent: May 31, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Dennis Hui, Mattias Andersson, Yufei Blankenship, Ivana Maric
  • DMRS structure for MMW RAN
    Patent number: 11349621
    Abstract: There is disclosed a method of operating a transmitting node in a millimeter-wave communication network. The method includes transmitting communication signaling in a transmission timing structure, the communication signaling including control signaling and data signaling, the communication signaling further comprising reference signaling common to the control signaling and data signaling. The disclosure also pertains to related devices and methods.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: May 31, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Robert Baldemair, Mehrnaz Afshang, Rikke Apelfrojd, Jung-Fu Cheng, Ning He, Dennis Hui, Stefan Parkvall
  • Spatially coupled polar codes
    Patent number: 11349598
    Abstract: A method in a node (110, 115) comprises generating (604) a plurality of constituent polar codes, each of the plurality of constituent polar codes having an associated block length and an associated set of information bits. The method comprises coupling (608) at least a portion of the sets of information bits associated with each of the plurality of constituent polar codes to generate a spatially coupled polar code. The method comprises encoding (612) a wireless transmission using the spatially coupled polar code.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: May 31, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Dennis Hui, Yufei Blankenship, Songnam Hong, Ivana Maric
  • SIGNALING STRUCTURE FOR WIRELESS COMMUNICATION NETWORK
    Publication number: 20220158883
    Abstract: There is disclosed a method of operating a radio node in a wireless communication network, the method including communicating based on a signaling structure, the signaling structure including a number R of long symbols and/or a number Nsym of regular symbols, wherein R and/or Nsym is based on the subcarrier spacing associated to the signaling structure and/or a cyclic prefix length of a long symbol and/or a cyclic prefix length of a regular symbol. The disclosure also pertains to related devices and methods.
    Type: Application
    Filed: November 19, 2020
    Publication date: May 19, 2022
    Inventors: Mehrnaz AFSHANG, Mohammad MOZAFFARI, Jung-Fu CHENG, Dennis HUI
  • CIRCULAR BUFFER RATE MATCHING FOR POLAR CODES
    Publication number: 20220158661
    Abstract: Methods are proposed herein to perform rate matching for polar codes via circular buffering of the polar encoded bits. Embodiments are directed to methods of operation of a transmitting node in a wireless system including performing polar encoding of a set of information bits in accordance with a polar sequence of length NB to thereby generate NB coded bits. The method can further include interleaving the coded bits to thereby provide an interleaved coded bit sequence, and storing the interleaved coded bit sequence into a circular buffer of length NB. According to certain embodiments, the method can further include extracting N coded bits for transmission from the circular buffer. N can be greater than, equal to, or less than NB.
    Type: Application
    Filed: February 3, 2022
    Publication date: May 19, 2022
    Inventors: Dennis Hui, Yufei Blankenship
  • Alteration of successive cancellation order in decoding of polar codes
    Patent number: 11323727
    Abstract: Systems and methods for performing polar decoding using a transformation of the coded bits prior to polar decoding and an inverse transformation of the resulting data bits after polar decoding are disclosed. In some embodiments, a method of operation of a receiving node to perform polar decoding comprises transforming a received code bit vector yN in accordance with a transformation TN to thereby provide a transformed code bit vector Y?N=YNTN, performing polar decoding of the transformed code bit vector y?N to thereby provide a transformed data bit vector v?N, and inversely transforming the transformed data bit vector v?N in accordance with an inverse transformation TN?1 to thereby provide an estimated data bit vector vN=v?NTN?1. In some embodiments, the transformation TN re-orders coded bits in the coded bit vector yN such that some future frozen bit(s) are swapped in front of some information bit(s) prior to performing polar decoding.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: May 3, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Dennis Hui, Yufei Blankenship
  • Beam-Scan Time Indicator
    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
  • REFERENCE SIGNALING FOR WIRELESS COMMUNICATION
    Publication number: 20220116166
    Abstract: There is disclosed a method of operating a transmitting radio node in a wireless communication network, the method including transmitting reference signaling based on a reference pilot sequence, the reference pilot sequence being one of a set of reference pilot sequences, at least one reference pilot sequence of the set being a subsequence of another reference pilot sequence of the set. The disclosure also pertains to related devices and methods.
    Type: Application
    Filed: October 9, 2020
    Publication date: April 14, 2022
    Inventors: Dennis HUI, Jung-Fu CHENG, Mehrnaz AFSHANG
  • CONTROL SIGNALING FOR WIRELESS COMMUNICATION
    Publication number: 20220116922
    Abstract: There is disclosed a method of operating a transmitting radio node in a wireless communication network. The method includes transmitting first control signaling in a control region, the first control signaling having at least a first signaling characteristic from a set of signaling characteristics in which the signaling characteristics of the set of signaling characteristics are associated to the control region. The disclosure also pertains to related devices and methods.
    Type: Application
    Filed: October 9, 2020
    Publication date: April 14, 2022
    Inventors: Jung-Fu CHENG, Dennis HUI, Mehrnaz AFSHANG
  • Error detection in communication systems using polar coded data transmission
    Patent number: 11303300
    Abstract: A method of decoding a polar coded signal includes determining channel reliabilities for a plurality of polar coded bit channels in a data communication system including a plurality of frozen bit channels and non-frozen bit channels, selecting a frozen bit channel, calculating a likelihood value for a bit estimate associated with the frozen bit channel, generating a hard decision value for the bit estimate in response to the likelihood value, comparing the hard decision value for the bit estimate to a known value of a frozen bit transmitted on the frozen bit channel, in response to determining that the hard decision value for the bit estimate differs from the known value of the frozen bit transmitted on the frozen bit channel, updating an accumulated uncertainty, comparing the accumulated uncertainty to a threshold, and determining that a decoding error has occurred in response to the comparison.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: April 12, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Dennis Hui, Yufei Blankenship
  • Polar Coding for Beam Sweeping Broadcast Channel
    Publication number: 20220095292
    Abstract: According to some embodiments, a method in a wireless transmitter comprises: obtaining a first set of bits (comprising a non-time-varying component) for wireless transmission; concatenating a second set of bits (comprising a time-varying component (e.g., beam identifier)) to the first set of bits; encoding the concatenated first and second set of bits using a channel code; and transmitting the encoded bits to a wireless receiver. In some embodiments, transmitting the encoded bits to the wireless receiver comprises transmitting a first beam. The method may further comprise: concatenating a third set of bits (comprising a time-varying component (e.g., beam identifier)) to the first set of wireless bits; encoding the concatenated first and third set of bits using a channel code; and transmitting the encoded bits to a wireless receiver using a second beam.
    Type: Application
    Filed: December 6, 2021
    Publication date: March 24, 2022
    Inventors: Dennis Hui, Yufei Blankenship, Anders Wesslén
  • Circular buffer rate matching for polar codes
    Patent number: 11277156
    Abstract: Methods are proposed herein to perform rate matching for polar codes via circular buffering of the polar encoded bits. Embodiments are directed to methods of operation of a transmitting node in a wireless system including performing polar encoding of a set of information bits in accordance with a polar sequence of length NB to thereby generate NB coded bits. The method can further include interleaving the coded bits to thereby provide an interleaved coded bit sequence, and storing the interleaved coded bit sequence into a circular buffer of length NB. According to certain embodiments, the method can further include extracting N coded bits for transmission from the circular buffer. N can be greater than, equal to, or less than NB.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: March 15, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Dennis Hui, Yufei Blankenship
  • CRC INTERLEAVING PATTERN FOR POLAR CODES
    Publication number: 20220052709
    Abstract: According to some embodiments, a method of operation of a wireless transmitter in a wireless communication network comprises: encoding a set of information carrying data bits u of length K with a linear outer code to generate a set of outer parity bits p along with the data bits u; interleaving the set of outer parity bits p and the data bits u using a predetermined interleaving mapping function that depends on the number of data bits K and is operable to distribute some bits of the set of parity bits p in front of some data bits u; and encoding the interleaved bits using a Polar encoder to generate a set of encoded bits x. Various interleaving mapping functions are disclosed.
    Type: Application
    Filed: October 29, 2021
    Publication date: February 17, 2022
    Inventors: Dennis Hui, Yufei Blankenship, Michael Breschel, Anders Wesslén
  • Beam-scan time indicator
    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
  • Beam-scan time indicator
    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