Patents by Inventor Erik Larsson

Erik Larsson 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).

  • Publication number: 20240061041
    Abstract: A system for accessing a plurality of instruments embedded in a semiconductor device includes a hardware interface and a test controller for testing the semiconductor device or generating test patterns for the semiconductor device, wherein the test controller comprises an instrument connectivity language and a procedural description language configuration for operating the instruments. The test controller is configured to perform the steps of: testing at least one functionality of each of the plurality of instruments, thereby receiving a fault status of each of the plurality of instruments; and based on the fault status of the plurality of instruments, configuring a test block in the semiconductor device such that valid test patterns for the semiconductor device can be generated without updating the instrument connectivity language and procedural description language configuration.
    Type: Application
    Filed: October 9, 2020
    Publication date: February 22, 2024
    Inventor: Erik Larsson
  • Patent number: 11812393
    Abstract: A transmission power allocation method for a transmitter is disclosed. The transmitter includes a number of at least two transmitter paths for spatial multiplexing of two or more signals to be transmitted using respective allocated transmission powers to respective ones of two or more users, wherein each transmitter path includes at least one component causing non-linear distortion and a transmit antenna. The method includes determining a respective received distortion power for each of the two or more users as a function of respective hypothesized transmission powers for the two or more users and based on a model of a spatial behavior of the non-linear distortion. The method also includes allocating respective transmission powers for the two or more users based on the determined respective received distortion powers. Corresponding transmission power allocation apparatus, transmitter, network node, wireless communication device are also disclosed.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: November 7, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Ulf Gustavsson, Christopher Mollén, Erik Larsson
  • Patent number: 11799530
    Abstract: A method is provided. The method includes determining a set of beam indexes including a first beam index and a second beam index; and determining a set of candidate matching networks. The method further includes performing an assigning step, where the assigning step includes: (a1) assigning a first matching network from the set of candidate matching networks to a first beam index; and (a2) assigning a second matching network from the set of candidate matching networks to a second beam index. The first matching network is different from the second matching network.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: October 24, 2023
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Tsao-Tsen Chen, Erik Larsson, Anders Stjernman
  • Patent number: 11671903
    Abstract: A disclosed method is implemented by a network node in a wireless communication network to transmitting system information to a plurality of wireless terminals. The network node transmits a first group of system information blocks (SIBs) via a first physical channel, and transmits a second group of additional SIBs via a different, second physical channel. A corresponding network node operative to implement the method is also disclosed. Another disclosed method is implemented by a wireless terminal in a wireless communication network. The wireless terminal processes information received from a base station over a first physical channel to identify a first group of SIBs, and processes information received from the base station over a different, second physical channel to identify a second group of additional SIBs. A corresponding wireless terminal operative to implement the method is also disclosed.
    Type: Grant
    Filed: January 11, 2021
    Date of Patent: June 6, 2023
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Sofia Brismar, Joakim Bergström, Erik Larsson, Fredrik Ovesjö, Johan Rune
  • Patent number: 11656216
    Abstract: A monitoring process for a grease lubricated rotating system having a processing unit linked to a measurement system for measuring the water content within lubrication grease. A learning period is performed that establishes upper and lower thresholds based on current measurements. If at least a first number of measurements out a second number of last measurements are above the upper threshold then if such is the case, emitting a first event. If at least the first number of measurements out the second number of last measurements are below the lower threshold, then if such is the case, emitting a second event, if at least a first event has been emitted, if such is the case emitting an alarm function of the at least first event.
    Type: Grant
    Filed: July 1, 2021
    Date of Patent: May 23, 2023
    Assignee: Aktiebolaget SKF
    Inventors: Per-Erik Larsson, Fredrik Sundquist
  • Patent number: 11637652
    Abstract: Methods and apparatus for encoding and decoding a downlink control channel transmission, such as but not exclusively a High Speed Signalling Control Channel, HS-SCCH, transmission, in a wireless communications network. A method in a network node for encoding a downlink control channel transmission, comprises determining that channel conditions are below a threshold level, and in response to determining that channel conditions are below the threshold level, performing at least one of: encoding one or more predetermined control information bits into the downlink control channel transmission, and encoding a reduced number of control information bits into the downlink control channel transmission by omitting one or more control information bits, wherein the one or more omitted control information bits are predetermined control information bits. The method further comprises transmitting the downlink control channel transmission to a user equipment.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: April 25, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Gerardo Agni Medina Acosta, Waikwok Kwong, Erik Larsson, Florent Munier
  • Publication number: 20230029484
    Abstract: Embodiments described herein relate to methods and apparatuses for providing communication between a base station and at least one wireless device using a first beam. A method in a base station comprises receiving an indication of two or more beams, wherein the two or more beams meet a quality criterion associated with the at least one wireless device; obtaining a combined beam vector, w, based on a weighted sum of two or more beam vectors, bk, associated with the two or more beams; and communicating with the at least one wireless device using the first beam, wherein the first beam is generated using the combined beam vector.
    Type: Application
    Filed: September 25, 2020
    Publication date: February 2, 2023
    Inventors: Bo Göransson, Carl Lutnaes, Magnus Lundevall, Erik Larsson
  • Patent number: 11564188
    Abstract: A method of operating a distributed MIMO system is disclosed. The distributed MIMO system is configured to serve a plurality of wireless communication devices (u1, . . . , uN). The distributed MIMO system comprises a number of access points (A1, . . . , AK), each comprising a time circuit (180) configured to keep track of a local time of the access point (A1, . . . , AK). The method comprises performing (210) an intra-group synchronization procedure for a group (G1) of at least three access points (A1-A3). The intra-group synchronization procedure comprises, for each access point (Ai) in the group (G1), transmitting (Ti), from that access point (Ai), a synchronization signal and obtaining (Oi) a transmission time indicator indicating a transmission time of that synchronization signal in the local time of that access point (Ai).
    Type: Grant
    Filed: August 15, 2018
    Date of Patent: January 24, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Pål Frenger, Emil Björnson, Erik Larsson
  • Patent number: 11553888
    Abstract: An apparatus for radiopharmaceutical quantification of a body part includes a processor configured to receive at least one gamma image of a body part acquired by at least one gamma camera configured to detect gamma and/or X-rays. The at least one gamma image comprises spectral energy data that includes data resulting from decay of at least one radiopharmaceutical. The processor is configured to determine an activity of the at least one radiopharmaceutical at a plurality of spatial positions in the body part and determines a spatial distribution of the at least one radiopharmaceutical in the body part. The determination for a spatial position of the plurality of spatial positions comprises correlating a generated synthetic spectrum to an experimental spectrum generated from the spectral energy data for at least one position in the at least one gamma image that corresponds to that spatial position.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: January 17, 2023
    Assignee: Bayer Aktiengesellschaft
    Inventors: Cecilia Hindorf, Erik Larsson, Gustav Brolin, Tomas Ohlsson
  • Patent number: 11537117
    Abstract: A method for setting alarm levels for a machine provides defining at least one condition indicator reflecting the condition of the machine with respect to a defect to be monitored of the machine, the at least one condition indicator defined from machine kinematic data, recording measurements of process related parameters during a predetermined period during which the machine is operating normally, calculating at least one condition indicator value for the at least one condition indicator) using machine condition data, determining a graph of the at least one condition indicator value as a function of a first process related parameter chosen from the measured process related parameters, dividing the graph into operating classes, each operating class being representative of different operating conditions of the machine, calculating an alarm level value for each operating class, setting the determined alarm level value at the midpoint of each operating class.
    Type: Grant
    Filed: July 26, 2021
    Date of Patent: December 27, 2022
    Assignee: Aktiebolaget SKF
    Inventors: Joakim Bergstrom, Per-Erik Larsson
  • Patent number: 11522568
    Abstract: A mechanism for identifying a low performing radio branch at a radio transceiver device. A method is performed by the radio transceiver device that comprises transmitting a reference signal for at least some of the N radio branches in a respective test period. The reference signal in each test period is transmitted according to a test configuration that specifies that during each test period the reference signal is mapped to only one of the N radio branches such that in test period k, where k=1, . . . , N, the reference signal is only transmitted from radio branch k. The method comprises receiving at least one report from another radio transceiver device relating to measurements made by this so-called another radio transceiver device on the reference signal transmitted for these at least some of the N radio branches to identify which of the N radio branches is the low performing one.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: December 6, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Namir Lidian, Bo Göransson, Erik Larsson
  • Patent number: 11493405
    Abstract: A device for identifying a type of a bearing is provided. The device includes a detection unit for detecting a vibration frequency of the bearing, and an identification unit for identifying the type of the bearing based on the detected vibration frequency.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: November 8, 2022
    Assignee: Aktiebolaget SKF
    Inventors: Joakim Bergstrom, Per-Erik Larsson
  • Patent number: 11463970
    Abstract: The present disclosure relates to a system (100) for wireless reference signal distribution. The system (100) comprises an antenna array (135) comprising a plurality of transceivers (140a, 140b). The antenna array (135) is arranged to transmit and receive a in radio signal via the plurality of transceivers (140a, 140b). The system (100) further comprises a synchronization signal generator (110) arranged to transmit wirelessly at least one synchronization signal. Each synchronization signal comprises at least one time-dependent signal component, wherein the at least one synchronization signal has at least one time-dependent signal component with an amplitude above a predetermined threshold during a total duration of the at least one synchronization signal. Each transceiver (140a, 140b) is connected to a respective synchronization signal receiver (130a, 130b) arranged to receive the at least one synchronization signal.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: October 4, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Ulf Gustavsson, Ted Johansson, Erik Larsson
  • Patent number: 11415956
    Abstract: A system with at least one control unit and a bearing arrangement that includes at least one sensor unit for measuring a quantity. The system is configured to find out with the help of the at least one sensor unit first values of the quantity in a first time span for a first set of instants of time. The system is further configured to infer second values of the quantity for a second set of instants of time from third values measured via the at least one sensor unit in a second time span. The first set of instants of time is different from the second set of instants of time.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: August 16, 2022
    Assignee: Aktiebolaget SKF
    Inventors: Per-Erik Larsson, Fredrik Sundquist
  • Patent number: 11402298
    Abstract: A device for detecting a defect of a rotating arrangement is disclosed. The rotating arrangement provides one or more rotating elements or groups of rotating elements. The device includes a definition unit for defining a dynamic threshold based on a static threshold of an actually monitored rotating element or group of rotating elements and based on a mean value of static thresholds of a plurality of similar functioning rotating elements or groups of rotating elements, and a detection unit for detecting a defect by comparing a current parameter value of the actually monitored rotating element or group of rotating elements with the dynamic threshold. Also, a method for detecting a defect of a rotating arrangement is disclosed.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: August 2, 2022
    Assignee: Aktiebolaget SKF
    Inventor: Per-Erik Larsson
  • Publication number: 20220239353
    Abstract: A method is provided. The method includes determining a set of beam indexes including a first beam index and a second beam index; and determining a set of candidate matching networks. The method further includes performing an assigning step, where the assigning step includes: (a1) assigning a first matching network from the set of candidate matching networks to a first beam index; and (a2) assigning a second matching network from the set of candidate matching networks to a second beam index. The first matching network is different from the second matching network.
    Type: Application
    Filed: May 28, 2019
    Publication date: July 28, 2022
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Tsao-Tsen CHEN, Erik Larsson, Anders Stjernman
  • Patent number: 11397130
    Abstract: A device for detecting a defect of a rotating arrangement is provided. The rotating arrangement further provides one or more rotating elements. The device includes a measuring unit for measuring a parameter of the rotating arrangement for a predefined time period, a calculation unit for calculating a mean value and a standard deviation of the parameter of the predefined time period and for calculating a threshold based on a sum of the mean value and the standard deviation during the predefined time period, and a detection unit for detecting a defect by comparing a current value of the parameter with the calculated threshold. The calculation unit is configured to adjust the calculated threshold using a stability factor. The stability factor is a variable function of the standard deviation and the mean value. A method for detecting a defect of a rotating arrangement is also provided.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: July 26, 2022
    Assignee: Aktiebolaget SKF
    Inventor: Per-Erik Larsson
  • Patent number: 11368233
    Abstract: There is provided mechanisms for reporting a faulty antenna port at a transmitting radio device. A method is performed by a receiving radio device. The method comprises receiving at least one reference signal transmitted at an antenna port of the transmitting radio device. The method comprises determining whether the antenna port is deemed faulty or not by subjecting the at least one reference signal to an evaluation criterion. The method comprises transmitting, when the antenna port is deemed faulty, a report to the transmitting radio device. The report indicates that the antenna port is deemed faulty.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: June 21, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Erik Larsson, Mattias Frenne, Bo Göransson, Fredrik Ovesjö, Paul Peter Von Butovitsch
  • Patent number: 11329699
    Abstract: A disturbance mitigation method of a communication element for a distributed antenna system is disclosed. The communication element is associated with two or more antenna elements of the distributed antenna system. The method comprises acquiring channel condition information associated with at least two of a plurality of wireless communication devices served by the communication element, and partitioning the plurality of wireless communication devices into at least two groups based on the acquired channel condition information. The method also comprises, for each of the groups, determining respective pre-coding weights based on the acquired channel condition information, wherein the respective pre-coding weights of different groups are determined according to different disturbance mitigation approaches.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: May 10, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Giovanni Interdonato, Pål Frenger, Emil Björnson, Marcus Karlsson, Erik Larsson
  • Publication number: 20220083036
    Abstract: A method for setting alarm levels for a machine provides defining at least one condition indicator reflecting the condition of the machine with respect to a defect to be monitored of the machine, the at least one condition indicator defined from machine kinematic data, recording measurements of process related parameters during a predetermined period during which the machine is operating normally, calculating at least one condition indicator value for the at least one condition indicator) using machine condition data, determining a graph of the at least one condition indicator value as a function of a first process related parameter chosen from the measured process related parameters, dividing the graph into operating classes, each operating class being representative of different operating conditions of the machine, calculating an alarm level value for each operating class, setting the determined alarm level value at the midpoint of each operating class.
    Type: Application
    Filed: July 26, 2021
    Publication date: March 17, 2022
    Inventors: Joakim Bergstrom, Per-Erik Larsson