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).

  • Adapting a SINR Value for Link Adaptation
    Publication number: 20260238363
    Abstract: It is provided a method for adapting an SINR value used for link adaptation. The method comprises: determining a retransmission delay between a transmission and a retransmission; obtaining a set of samples of SINR measurements for uplink transmissions; obtaining, for each SINR sample in the set of samples, associated retransmission SINR samples; defining a number of data bins for different ranges of SINR; calculating a combined SINR metric for each base SINR sample based on the base SINR sample and its associated retransmission SINR samples; allocating each of the combined SINR metrics to a data bin; determining a representative SINR value based on a reliability metric, resulting in a set of representative SINR values; obtaining a SINR measurement for an uplink transmission; obtaining the representative SINR value from a data bin; and providing an SINR value based on the representative SINR value to a link adaptation module.
    Type: Application
    Filed: April 20, 2023
    Publication date: August 13, 2026
    Inventors: Christos Vranas, Karl Werner, Rikke Apelfröjd
  • Technique for Dynamic Downlink Transmit Power Selection
    Publication number: 20260222029
    Abstract: As to a method aspect, a method (200) of selecting a downlink, DL, transmit power level from a plurality of DL transmit power levels for transmitting data to a radio device in a cell of a radio access network, RAN, comprises a step of transmitting (206) a configuration message to the radio device. The configuration message is indicative of one or more channel state information, CSI, measurements associated with one or more hypotheses. Each hypothesis comprises a DL transmit power level. The method (200) further comprises steps of transmitting (208) one or more reference signals, RSs, associated with the hypotheses, for the radio device performing the CSI measurements; receiving (210), from the radio device, one or more CSI reports; and transmitting data to the radio device, wherein a modulation configuration and a DL transmit power level are selected based on the received (210) CSI reports.
    Type: Application
    Filed: December 20, 2022
    Publication date: July 30, 2026
    Inventors: David Astely, Karl Werner, Antonios Pitarokoilis, Rikke Apelfröjd
  • PAPR REDUCTION FOR MIMO TRANSMISSION
    Publication number: 20260180844
    Abstract: A method is disclosed for reduction of peak-to-average power ratio (PAPR) of transmission of a multiple-input multiple-output (MIMO) signal from a transmitter, wherein the transmission comprises a number of MIMO layers. The method comprises determining a clipping signal for the MIMO signal, and generating a PAPR reduced MIMO signal for transmission by combining the MIMO signal with a projection of the clipping signal onto a null space of an effective channel. The effective channel comprises a propagation channel between the transmitter and one or more receivers (wherein the receivers have an amount of receiver antenna ports) as affected by receiver combining matching transmitter precoding. A setting of the transmitter precoding is varied over frequency, which induces frequency selectivity of the effective channel. The method is particularly useful when the propagation channel is relatively flat in frequency.
    Type: Application
    Filed: October 18, 2022
    Publication date: June 25, 2026
    Inventors: Milad FOZOONI, Petter ERSBO, Karl WERNER
  • First reference signal that complements a second reference signal
    Patent number: 12659104
    Abstract: A method performed by a network node. The method includes determining to transmit a first reference signal. The method also includes determining whether a second reference signal should be transmitted. The method also includes transmitting the first reference signal using a first precoder. The method also includes transmitting the second reference signal as a result of determining that the second reference signal should be transmitted. The second reference signal is transmitted using a second precoder that is complementary to the first precoder such that the second reference signal occupies a first part of a channel not occupied by the first reference signal.
    Type: Grant
    Filed: December 15, 2021
    Date of Patent: June 16, 2026
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Karl Werner, David Astely, Petter Ersbo, Eric Nordström, Niklas Wernersson
  • RADIO POWER SCALING OF A SIGNAL HAVING A HIGH-PRIORITY PART AND A LOW-PRIORITY PART
    Publication number: 20260156584
    Abstract: There is provided techniques for radio power scaling of a signal. A method comprises providing, from a baseband unit to a radio unit, a signal in a frequency-domain representation and priority information of the signal, wherein the signal has an information content composed at least of a low-priority part and a high-priority part, and wherein the priority information specifies which parts of the signal are associated with which priorities. The method comprises applying, by the radio unit, radio power scaling to the signal in accordance with the priority information and in conjunction with transforming the signal to a time-domain representation, wherein, per time unit in the time-domain representation, the low-priority part is allocated a lower power spectral density than the high-priority part.
    Type: Application
    Filed: October 21, 2022
    Publication date: June 4, 2026
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Erik LARSSON, David ASTELY, Karl WERNER
  • Event-based triggering of channel quality measures
    Patent number: 12621693
    Abstract: There is provided mechanisms for event-based triggering of second channel quality measures. A method is performed by a network node. The method comprises obtaining a first measure of channel quality of a radio propagation channel extending between the network node and a user equipment from measurements on an uplink signal received from the user equipment. The method comprises triggering, when determining that the first measure of channel quality causes an event-based triggering condition to be fulfilled, transmission of a further uplink signal from the user equipment for the network node to obtain a second measure of the quality of the radio propagation channel. Determining that the first measure of channel quality causes the event-based triggering condition to be fulfilled involves making a comparison between the first measure of channel quality and a reference channel quality.
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: May 5, 2026
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Hamed Farhadi, Niklas Wernersson, Karl Werner
  • NETWORK NODE AND METHOD IN A WIRELESS COMMUNICATIONS NETWORK
    Publication number: 20260046006
    Abstract: A method for handling synchronization beams for synchronization with a first UE. The network node determines a second set of synchronization beams related to the first UE to be used for the carrier. Determining the second set of synchronization beams related to the first UE to be used for the carrier is based on an obtained position of the first UE. The network node adds the beams of the second set of synchronization beams to an active set of synchronization beams for active UEs. The network node broadcasts a respective synchronization signal in each synchronization beam out of the active set of synchronization beams for the carrier. The network node receives from the first UE, an indication that the first UE has connected to the network node using a specific synchronization beam out of the active set of synchronization beams based on the respective synchronization signals.
    Type: Application
    Filed: January 26, 2023
    Publication date: February 12, 2026
    Inventors: Niklas Wernersson, Karl Werner
  • Network node, user equipment, and methods for handling channel feature estimates associated with a radio channel
    Patent number: 12513025
    Abstract: A method performed by a network node for handling channel feature estimates associated with a radio channel between a User Equipment, UE, and the network node in a wireless communications network is provided. The network node obtains a channel feature estimates associated to the radio channel estimated at a first point in time. Data representing the channel feature estimates has a first size. The network node compresses the channel feature estimates at the first point in time by replacing them with updated channel feature estimates that at the subsequent point in time fulfils a respective threshold condition. The data representing the updated channel feature estimates has a second size. The second size is smaller than the first size. The network node then adjusts parameters for a transmission at the radio channel based on the updated channel feature estimates.
    Type: Grant
    Filed: October 7, 2020
    Date of Patent: December 30, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Zhao Wang, Karl Werner, Niklas Wernersson, Petter Ersbo
  • Radio channel estimation in a radio node
    Patent number: 12506643
    Abstract: Radio channel estimation in a radio node is provided. The radio node is configured to receive a number of wideband reference symbols corresponding to a wideband radio channel having a wideband bandwidth and convert the wideband reference symbols into a number of wideband taps each having a complex value and associated with a respective beam direction and a respective tap delay. The radio node dynamically determines a wideband power threshold based on channel information related to the wideband channel. Accordingly, the radio node determines a subset of the wideband taps based on the wideband power threshold and generates a channel estimate for the wideband radio channel based on the subset of wideband taps. As a result, the radio node may create a more accurate channel estimation across the wider channel bandwidth over a large span of SNR conditions.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: December 23, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Torsten Carlsson, Karl Werner
  • METHODS AND APPARATUSES FOR DOWNLINK TRACKING REFERENCE SIGNAL CONFIGURATION
    Publication number: 20250379694
    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: August 28, 2025
    Publication date: December 11, 2025
    Inventors: Håkan BJÖRKEGREN, Per ERNSTRÖM, Mattias FRENNE, Stephen GRANT, Karl WERNER
  • JOINT RESOURCE MAP DESIGN OF DM-RS AND PT-RS
    Publication number: 20250358070
    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: August 5, 2025
    Publication date: November 20, 2025
    Inventors: Zhao WANG, Lars LINDBOM, Vicent MOLÉS CASES, Karl WERNER
  • Methods for adapting density of demodulation reference signals
    Patent number: 12451945
    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: December 29, 2023
    Date of Patent: October 21, 2025
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Lars Lindbom, Mattias Frenne, Martin Hessler, Karl Werner
  • Methods and apparatuses for downlink tracking reference signal configuration
    Patent number: 12425158
    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: May 30, 2024
    Date of Patent: September 23, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Håkan Björkegren, Per Ernström, Mattias Frenne, Stephen Grant, Karl Werner
  • Network architecture, methods, and devices for a wireless communications network
    Patent number: 12418355
    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: January 2, 2024
    Date of Patent: September 16, 2025
    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, 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
  • Joint resource map design of DM-RS and PT-RS
    Patent number: 12413362
    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: February 28, 2024
    Date of Patent: September 9, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Zhao Wang, Lars Lindbom, Vicent Molés Cases, Karl Werner
  • Method and device(s) for supporting calibration of a multi-antenna array comprised in an antenna device operative with a wireless communication network
    Patent number: 12261719
    Abstract: Method and one or more first devices for supporting calibration of a multi-antenna array comprised in a first antenna device operative with a wireless communication network. The first device(s) provide phase correcting information, to be used in calibration of the multi-antenna array, based on covariances corresponding to recurrent displacement vectors of the multi-antenna array. Said covariances being based on channel estimates estimated from certain radio signals received after transmission over radio propagation channels between said multi-antenna array of the first antenna device and one or more second antenna devices operative with the wireless communication network.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: March 25, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Henrik Asplund, Martin Johansson, David Astely, Karl Werner, Benny Lennartson
  • Method and transceiver of a wireless communication network for handling reference signals
    Patent number: 12250164
    Abstract: Disclosed is a method and a first transceiver of a wireless communication network, for handling reference signals. The method comprises receiving, from a second transceiver, at antenna elements of each of M antenna branches of the first transceiver and in time domain, an OFDM modulated wideband reference signal comprising an OFDM reference signal symbol mapped to every K subcarrier frequency of at least a subset of a carrier frequency bandwidth, and, at each of the M antenna branches, sampling the received wideband reference signal using N samples per OFDM symbol. The method further comprises, for each of the M antenna branches, accumulating the received, sampled wideband reference signal over at least two repetition blocks, each of length of N/K, to obtain a condensed signal with the length N/K samples and conveying the condensed signal over an interface to an aggregate unit.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: March 11, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Karl Werner, Torsten John Carlsson, Magnus Nilsson
  • First Network Node, Second Network Node, User Equipment and Methods in a Wireless Communications Network
    Publication number: 20250070843
    Abstract: A method performed by a first network node for adapting a radio link to a User Equipment, UE, served by the first network node in a wireless communications network is provided. Respective channel quality measurement resources are pre-allocated for each 5 of one or more neighbouring network nodes for transmitting respective signals of one or more long-term power levels. The long-term power levels are functions of instantaneous power levels of more than one time and frequency resource of a radio link. The first network node configures (601) the UE to perform a channel quality measurement of the signals which are transmitted using the one or more long-term power 10 levels by the one or more neighbouring network nodes in the pre-allocated channel quality measurement resources. The first network node receives (602) a report from the UE. The report reports a first Channel Quality Indicator, CQI.
    Type: Application
    Filed: April 28, 2022
    Publication date: February 27, 2025
    Inventors: Christos Vranas, Karl Werner, Rikke Apelfröjd, Anders Furuskär
  • A FIRST REFERENCE SIGNAL THAT COMPLEMENTS A SECOND REFERENCE SIGNAL
    Publication number: 20250062872
    Abstract: A method performed by a network node. The method includes determining to transmit a first reference signal. The method also includes determining whether a second reference signal should be transmitted. The method also includes transmitting the first reference signal using a first precoder. The method also includes transmitting the second reference signal as a result of determining that the second reference signal should be transmitted. The second reference signal is transmitted using a second precoder that is complementary to the first precoder such that the second reference signal occupies a first part of a channel not occupied by the first reference signal.
    Type: Application
    Filed: December 15, 2021
    Publication date: February 20, 2025
    Inventors: Karl WERNER, David ASTELY, Petter ERSBO, Eric NORDSTRÖM, Niklas WERNERSSON
  • Network architecture, methods, and devices for a wireless communications network
    Patent number: 12231284
    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: June 8, 2022
    Date of Patent: February 18, 2025
    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 Wallen, 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