Patents by Inventor Karl Werner

Karl Werner 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).

  • Method and apparatus for phase tracking-reference signal (PT-RS) port selection in downlink
    Patent number: 11201640
    Abstract: Methods and apparatuses are disclosed for PT-RS selection. In one embodiment, a wireless device is configured to determine a layer based at least on a precoder associated with a precoder matrix indicator, PMI; and transmit an indication of the determined layer to a network node as part of channel state information, CSI, feedback. In other embodiments, a network device is configured to receive an indication of a layer for a phase-tracking reference signal, PT-RS, transmission as part of channel state information, CSI, feedback; determine a precoder based at least on the indication of the layer for the PT-RS transmission; and transmit the PT-RS, the PT-RS transmission associated with the indicated layer and a PT-RS port.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: December 14, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Vicent Molés Cases, Mattias Frenne, Lars Lindbom, Karl Werner
  • Methods for Adapting Density of Demodulation Reference Signals
    Publication number: 20210336678
    Abstract: According to an aspect, a wireless node selects a set of reference signal antenna ports for use in transmitting data to other wireless nodes in a given transmit time interval, from a plurality of sets of reference signal antenna ports that are available for use and that include reference signal antenna ports having different reference signal densities in the frequency and/or time dimension. The wireless node sends a message to a second wireless node indicating a reference signal assignment and including an indication of the selected set of reference signal antenna ports.
    Type: Application
    Filed: July 2, 2021
    Publication date: October 28, 2021
    Inventors: Lars Lindbom, Mattias Frenne, Martin Hessler, Karl Werner
  • METHODS AND APPARATUSES FOR DOWNLINK TRACKING REFERENCE SIGNAL CONFIGURATION
    Publication number: 20210273761
    Abstract: A method, wireless device and network node are disclosed. According to one aspect, a method for a wireless device includes receiving a configuration of a reference signal resource set from the network node, the reference signal resource set being a set of single-symbol and single antenna port reference signal resources in at least one slot; and based on at least one parameter of the received configuration, determining whether the UE can assume a same antenna port for all reference signal resources of the reference signal resource set.
    Type: Application
    Filed: May 14, 2021
    Publication date: September 2, 2021
    Inventors: Håkan BJÖRKEGREN, Per ERNSTRÖM, Mattias FRENNE, Stephen GRANT, Karl WERNER
  • Methods for adapting density of demodulation reference signals
    Patent number: 11108454
    Abstract: According to an aspect, a wireless node selects a set of reference signal antenna ports for use in transmitting data to other wireless nodes in a given transmit time interval, from a plurality of sets of reference signal antenna ports that are available for use and that include reference signal antenna ports having different reference signal densities in the frequency and/or time dimension. The wireless node sends a message to a second wireless node indicating a reference signal assignment and including an indication of the selected set of reference signal antenna ports.
    Type: Grant
    Filed: October 9, 2017
    Date of Patent: August 31, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Lars Lindbom, Mattias Frenne, Martin Hessler, Karl Werner
  • MULTI-SUBCARRIER SYSTEM WITH MULTIPLE NUMEROLOGIES
    Publication number: 20210212064
    Abstract: A method of operating a user equipment comprises addressing multi-subcarrier system resources using multiple different numerologies available within a single carrier, the multiple different numerologies comprising a first numerology having resource blocks (RBs) with a first bandwidth and a first subcarrier spacing, ?f1, and a second numerology having RBs with a second bandwidth and a second subcarrier spacing, ?f2, which is different from ?f1, wherein the first numerology is aligned in the frequency domain relative to a frequency reference, Fref, according to m*?f1+Fref and the second numerology is aligned in the frequency domain relative to the frequency reference, Fref, according to n*?f2+Fref, where m and n are integers. The method further comprises transmitting and/or receiving information within the single carrier according to the at least one of the multiple different numerologies.
    Type: Application
    Filed: March 16, 2021
    Publication date: July 8, 2021
    Inventors: Karl Werner, Ning He, Robert Baldemair
  • JOINT RESOURCE MAP DESIGN OF DM-RS AND PT-RS
    Publication number: 20210211257
    Abstract: A method, network node and wireless device in a wireless communication system for one of transmitting and receiving a phase-tracking reference signal, PT-RS. The method includes obtaining information about a position in a time domain of a scheduled first demodulation reference signal, DM-RS, in a slot, and one of transmitting and receiving the PT-RS within the slot, the position of the PT-RS depending on the position in the time domain of the scheduled first DM-RS.
    Type: Application
    Filed: June 15, 2018
    Publication date: July 8, 2021
    Inventors: Zhao WANG, Lars LINDBOM, Vicent MOLÉS CASES, Karl WERNER
  • Methods and apparatuses for downlink tracking reference signal configuration
    Patent number: 11032043
    Abstract: A method, wireless device and network node are disclosed. According to one aspect, a method for a wireless device includes receiving a configuration of a reference signal resource set from the network node, the reference signal resource set being a set of single-symbol and single antenna port reference signal resources in at least one slot; and based on at least one parameter of the received configuration, determining whether the UE can assume a same antenna port for all reference signal resources of the reference signal resource set.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: June 8, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Håkan Björkegren, Per Ernström, Mattias Frenne, Stephen Grant, Karl Werner
  • DEMODULATION REFERENCE SIGNALING FOR MINI-SLOTS
    Publication number: 20210160026
    Abstract: There is disclosed a method of operating a radio node in a radio access network. The method includes transmitting and/or receiving reference signaling in a mini-slot, the timing of the reference signaling being determined based on a structure configuration of a transmission timing structure relative to which the mini-slot is positioned. The disclosure also pertains to related devices and methods.
    Type: Application
    Filed: May 15, 2017
    Publication date: May 27, 2021
    Inventors: Zhao WANG, Robert BALDEMAIR, Stefan PARKVALL, Karl WERNER
  • REFERENCE SIGNALING FOR RADIO ACCESS NETWORKS
    Publication number: 20210160027
    Abstract: There is disclosed a method of operating a signaling radio node in a radio access network, the signaling radio node being adapted for transmitting on a plurality of layers utilizing an antenna arrangement; wherein the method comprises transmitting, on each of the plurality of layers, reference signaling in the same symbol time interval, wherein reference signaling on at least a first layer of the plurality of layers is shifted in time and/or phase relative to reference signaling on at least a second layer of the plurality of layers. There are also disclosed related methods and devices.
    Type: Application
    Filed: April 13, 2018
    Publication date: May 27, 2021
    Inventors: Karl WERNER, Lars LINDBOM
  • DEMODULATION REFERENCE SIGNALING IN LTE/NR COEXISTENCE
    Publication number: 20210152310
    Abstract: There is disclosed a method of operating a network node, the network node operating according to a first radio access technology, RAT, the method including transmitting data in a transmission resource structure, the transmission resource structure including a first set of resource elements for data and a second set of resource elements for demodulation reference signals, DMRS, wherein the second set represents at least one pattern in frequency domain, wherein the transmission resource structure is scheduled based on a coexistence indication, the coexistence indication indicating the presence of cell-specific reference signals associated to a second RAT. The disclosure also pertains to related methods and devices.
    Type: Application
    Filed: June 2, 2018
    Publication date: May 20, 2021
    Inventors: Robert BALDEMAIR, Håkan BJÖRKEGREN, Erik DAHLMAN, Anders FURUSKÄR, Franz HEISER, Karl WERNER
  • Predictive acknowledgment feedback mechanism
    Patent number: 11005603
    Abstract: A method implemented in a first communication node for communicating with a second communication node over an acknowledged connection, comprising: receiving a stream of code blocks from the second communication node, wherein each code block is associated with a check value enabling error detection and belongs to a predefined group of code blocks; detecting errors in received code blocks using respective associated check values; and transmitting to the second communication node an acknowledgement in respect of each of said predefined groups of code blocks, wherein a negative value of the acknowledgment signifies that an error was detected for at least one of the code blocks in the predefined group, wherein the acknowledgement for a predefined group of two or more code blocks is based on a combination of error detection results for a subset of the code blocks in the predefined group.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: May 11, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Karl Werner, Robert Baldemair, Håkan Björkegren, Erik Dahlman, Stefan Parkvall
  • CSI REFERENCE SIGNALING IN LTE/NR COEXISTENCE
    Publication number: 20210135822
    Abstract: There is disclosed a method of operating a user equipment in a NR radio access network, wherein the method comprises receiving channel state information reference signaling, CSI-RS, in a CSI-RS pattern. The CSI-RS pattern represents a distribution of subcarriers for carrying CSI-RS over a range of numbered subcarriers, and comprises a first subpattern and a second subpattern. The CSI-RS pattern is based on received first configuration information and received second configuration information. Further, the first configuration information indicates the first subpattern of subcarriers starting at a first starting subcarrier with even number, and the second configuration information indicates the second subpattern starting at a second starting subcarrier with an odd number. The disclosure also pertains to related methods and devices.
    Type: Application
    Filed: June 14, 2018
    Publication date: May 6, 2021
    Inventors: Robert Baldemair, Håkan Björkegren, Karl Werner
  • CSI REFERENCE SIGNALING IN LTE/NR COEXISTENCE
    Publication number: 20210135813
    Abstract: A method of operating a network node in a NR radio access network includes transmitting channel state information reference signaling, CSI-RS, the CSI-RS having a CSI-RS pattern in frequency domain over a range of subcarriers including a reference subcarrier, wherein in a first frequency range below the reference subcarrier, the CSI-RS pattern includes a first sub-pattern represented by a repeated flush arrangement of a pattern element covering a number NP of subcarriers, and in a second frequency range above the reference subcarrier, the CSI-RS pattern includes a second sub-pattern represented by a repeated flush arrangement of the pattern element, wherein the first sub-pattern and the second sub-pattern are separated in frequency domain by an interrupting pattern having a number NI of subcarriers, wherein NI> 0 and NI is different from NP. The disclosure also pertains to related methods and devices.
    Type: Application
    Filed: June 5, 2018
    Publication date: May 6, 2021
    Inventors: Karl WERNER, Robert BALDEMAIR, Håkan BJÖRKEGREN
  • 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
  • Methods for Adapting Density of Demodulation Reference Signals
    Publication number: 20210091841
    Abstract: According to an aspect, a wireless node selects a set of reference signal antenna ports for use in transmitting data to other wireless nodes in a given transmit time interval, from a plurality of sets of reference signal antenna ports that are available for use and that include reference signal antenna ports having different reference signal densities in the frequency and/or time dimension. The wireless node sends a message to a second wireless node indicating a reference signal assignment and including an indication of the selected set of reference signal antenna ports.
    Type: Application
    Filed: December 4, 2020
    Publication date: March 25, 2021
    Inventors: Lars Lindbom, Mattias Frenne, Martin Hessler, Karl Werner
  • PHASE TRACKING REFERENCE SIGNAL FOR NR CSI-RS
    Publication number: 20210083816
    Abstract: Systems and methods that enable and provide compensation for phase noise when performing Channel State Information (CSI) measurements are disclosed. In some embodiments, a method of operation of a User Equipment 5 (UE) comprises determining that a reference signal associated with a CSI Reference Signal (CSI-RS) is present on two Orthogonal Frequency Division Multiplexing (OFDM) symbols onto which the CSI-RS is mapped. The reference signal is a reference signal that is present on OFDM symbols only when CSI-RS is present on the OFDM symbols. The method further comprises producing at 10 least one phase error estimate for the CSI-RS that is mapped onto at least one of the two OFDM symbols based on the reference signal, compensating for phase error on at least one of the two OFDM symbols based on the at least one phase error estimate, and generating and reporting CSI based on the CSI-RS after compensating for phase error.
    Type: Application
    Filed: January 3, 2018
    Publication date: March 18, 2021
    Inventors: Karl Werner, Lars Lindbom
  • Multi-subcarrier system with multiple numerologies
    Patent number: 10952217
    Abstract: A method of operating a user equipment comprises addressing multi-subcarrier system resources using multiple different numerologies available within a single carrier, the multiple different numerologies comprising a first numerology having resource blocks (RBs) with a first bandwidth and a first subcarrier spacing, ?f1, and a second numerology having RBs with a second bandwidth and a second subcarrier spacing, ?f2, which is different from ?f1, wherein the first numerology is aligned in the frequency domain relative to a frequency reference, Fref, according to m*?f1+Fref and the second numerology is aligned in the frequency domain relative to the frequency reference, Fref, according to n*?f2+Fref, where m and n are integers. The method further comprises transmitting and/or receiving information within the single carrier according to the at least one of the multiple different numerologies.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: March 16, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Karl Werner, Ning He, Robert Baldemair
  • Network architecture, methods, and devices for a wireless communications network
    Patent number: 10938497
    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 13, 2019
    Date of Patent: March 2, 2021
    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, Niklas Johansson, Martin Johansson, Du Ho Kang, Eleftherios Karipidis, Patrik Karlsson, Ali S. Khayrallah, Caner Kilinc, Göran N. Klang, Sara Landstrom, 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
  • Transmitting radio equipment, receiving radio equipment and corresponding methods for communicating using a reference signal
    Patent number: 10917274
    Abstract: Methods and transmitting and receiving radio equipments for transmitting and receiving a reference signal in a subframe where a portion of one or more multi-carrier modulation symbols that is included in the subframe is used for transmitting control information to receiving radio equipments. The transmitting radio equipment transmits the reference signal overlaid on at least a part of the portion of the one or more multi-carrier modulation symbols that is used for transmitting the control information in the subframe. The reference signal is generated based on at least one parameter. The receiving radio equipment then receives a transmission including the control information and the reference signal in the subframe, and may determine one or more properties of the reference signal based on the at least one parameter and process the reference signal using the determined one or more properties of the reference signal.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: February 9, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Karl Werner, Robert Baldemair, Håkan Björkegren
  • Joint resource map design of DM-RS and PT-RS
    Patent number: 10911197
    Abstract: A method, network node and wireless device in a wireless communication system for one of transmitting and receiving a phase-tracking reference signal, PT-RS. The method includes obtaining information about a position in a time domain of a scheduled first demodulation reference signal, DM-RS, in a slot, and one of transmitting and receiving the PT-RS within the slot, the position of the PT-RS depending on the position in the time domain of the scheduled first DM-RS.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: February 2, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Zhao Wang, Lars Lindbom, Vicent Molés Cases, Karl Werner