Patents by Inventor Torbjörn Wigren

Torbjörn Wigren 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: 20220264473
    Abstract: Mechanisms are provided for uplink power control of a terminal device. A method is performed in a network serving the terminal device. The method comprises estimating average total uplink transmit power for the terminal device. The method comprises determining a dynamic power threshold from the average total uplink transmit power according to a back-off power control loop. In the back-off power control loop, a setpoint value of total average transmission power is compared with a value of the estimated average total uplink transmit power. The method comprises setting a value of a power regulating parameter as function of the dynamic power threshold. The method comprises providing the value of the power regulating parameter to the terminal device for uplink power control of the terminal device.
    Type: Application
    Filed: June 10, 2019
    Publication date: August 18, 2022
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Torbjörn WIGREN, Petter BLOMBERG, Christer TÖRNEVIK, Mikael WITTBERG
  • Patent number: 11418974
    Abstract: A method for generating a probability map for a cell served by a network node is provided. The method includes generating a first probability map (P1) indicating a likelihood of primary beam directions (step 602). Generating the first probability map includes recording a first direction of a first user equipment (UE), the first direction indicating a direction of a first beam (e.g., a first set of antenna weights (a.k.a., precoding vector)) associated with the first UE when the first UE appears in the cell served by the network node. The method further includes generating a second probability map (P2) indicating a joint likelihood of primary and secondary beam directions (step 604). Generating the second probability map includes recording a second direction of a second beam associated with the first UE when the first UE switches from the first beam to the second beam, the second direction being recorded in association with the first direction.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: August 16, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Torbjörn Wigren, Ramon Delgado, Robert Karlsson, Katrina Lau, Richard Middleton
  • Patent number: 11412523
    Abstract: Methods, apparatus and computer programs for controlling the output of a transmission point. A method for controlling the output of a transmission point for a wireless communications network. The method comprises: determining an average output power of the transmission point over a period of time; comparing the average output power to an output power reference value; and allocating data, to be transmitted by the transmission point to one or more wireless devices, to a pool of radio resources. The pool of radio resources is adjusted as a function of the comparison between the average output power and the output power reference value.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: August 9, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Torbjörn Wigren, Billy Hogan, Alexander Langereis, Yali Pei, Yuan Wang, Christer Törnevik
  • Publication number: 20220240200
    Abstract: There is provided mechanisms for controlling total average transmission power of a radio base station. A method is performed by a control device. The method comprises performing, for a current discrete time value t, control of total average transmission power {Ptot}(t) of the radio base station according to a back-off power control loop. The total average transmission power {Ptot}(t) is computed over an averaging time window T of the present value of momentary transmission power and the N?1 values of momentary transmission power preceding the present value of momentary transmission power. The method comprises evaluating, for a future discrete time value less than, or equal to, t+T, the total average transmission power, assuming that values of momentary transmission power for all discrete time values from t up to t+T, starting at the next discrete time value t+1, is limited to a minimum value of said momentary transmission power.
    Type: Application
    Filed: May 29, 2019
    Publication date: July 28, 2022
    Inventors: Torbjörn Wigren, Shiguang Guo
  • Publication number: 20220225238
    Abstract: There is provided mechanisms for average EIRP control of at least two radio power sources. A method is performed by a coordinating controller of a site. The site comprises the at least two radio power sources. The method comprises obtaining, from a respective inner controller of each of the at least two radio power sources, power control feedback information. The method comprises determining, according to an inner control loop for each of the at least two radio power sources, coordinating control information from the power control feedback information. The method comprises performing individual average power control of each of the at least two radio power sources by providing, to each respective inner controller, the coordinating control information, whereby total average transmission power of each of the at least two radio power sources is selectively adjusted based on the inner control loop.
    Type: Application
    Filed: April 30, 2019
    Publication date: July 14, 2022
    Inventors: Torbjörn Wigren, Billy Hogan, Walter Müller
  • Publication number: 20220210762
    Abstract: A method for type state estimation of a user equipment connected to a wireless communication network. The method comprises updating, recursively, of a type state estimate. The type state estimate is a probability for the user equipment to be a drone conditioned on obtained kinematic state estimate updates concerning the user equipment. The user equipment is assigned to be a drone as a response on the type state estimate exceeding a threshold.
    Type: Application
    Filed: April 26, 2019
    Publication date: June 30, 2022
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Torbjörn WIGREN, Sholeh YASINI
  • Publication number: 20220206104
    Abstract: A method for sharing user equipment state estimates between nodes within a wireless communication network comprises initiating of transmission of at least one of obtained user equipment kinematic state estimate information and obtained user equipment type state estimate information to a receiving network node as a response to an obtained indication of a need for sharing user equipment state estimates. The obtained user equipment kinematic state estimate information comprising a latest kinematic state update time, as well as mode state vector estimates, mode covariance matrices and mode probabilities for at least one user equipment kinematic mode. The obtained user equipment type state estimate information comprising a latest type state update time and a type state probability estimate. A method for receiving and propagating the user equipment state estimates, and devices for both methods are also disclosed.
    Type: Application
    Filed: April 26, 2019
    Publication date: June 30, 2022
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Sholeh YASINI, Torbjörn WIGREN, Patrik PERSSON
  • Patent number: 11374662
    Abstract: In some embodiments, a method of operation of a node to monitor for faults in a receiver subsystem of a radio node comprises estimating a noise floor for each receiver chain of a plurality of receiver chains in the receiver subsystem of the radio node for each of one or more carriers to thereby provide a plurality of noise floor estimates. The method further comprises determining average received power for each receiver chain of the plurality of receiver chains in the receiver subsystem of the radio node for each of one or more carriers to thereby provide a plurality of average received power measurements. The method further comprises determining that there is a fault in the receiver subsystem of the radio node based on at least one of (a) a subset of the plurality of noise floor estimates and (b) a subset of the plurality of average received power measurements.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: June 28, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Mihai Parvan, Georgy Levin, Torbjörn Wigren
  • Publication number: 20220201700
    Abstract: A MIMO transmission point utilizes respective pluralities of beam weights to transmit corresponding pluralities of beams to each group of wireless devices, with respective numbers of resources being allocated for transmissions to each group of wireless devices. One method comprises: determining an average output power of the transmission point over a period of time in a first direction; comparing the average output power to an output power reference value; determining a fraction of a pool of available resources for the allocation of data to be transmitted by the transmission point as a function of the comparison; for each group of wireless devices, and determining beam gains in the first direction for each of the plurality of beams and weighting the number of resources allocated to the group of wireless devices according to the determined beam gains to obtain an effective number of resource blocks in the resources in the first direction.
    Type: Application
    Filed: April 16, 2019
    Publication date: June 23, 2022
    Inventors: Yali PEI, Torbjörn WIGREN
  • Publication number: 20220191803
    Abstract: There is provided mechanisms for controlling total average transmission power of a radio base station. A method is performed by a control device. The method comprises performing control of total average transmission power (Ptot)(t) of the radio base station according to a back-off power control loop. In the back-off power control loop, a setpoint value (Ptot)ref of the total average transmission power is compared with a value of the total average transmission power (Ptot)(t)—The value of the total average transmission power (Ptot)(t) is computed over an averaging time T. Control parameters of the back-off power control loop are scaled proportionally to the inverse of the averaging time T. The control parameters pertain to a response time of the back-off power control loop.
    Type: Application
    Filed: March 28, 2019
    Publication date: June 16, 2022
    Inventor: Torbjörn Wigren
  • Publication number: 20220191816
    Abstract: A method for state estimation of a UE connected to a wireless communication network, comprising obtaining (S1) of measurement information related to a 5 range-related measurement concerning a UE. The measurement information comprises data of the range-related measurement, a time at which the range-related measurement was performed, an identity of the UE and data enabling determination of a measuring position. The range-related measurement consists of data defining a distance between the UE and the measuring 10 position. A state estimation of the UE is performed (S2) based on the measurement information. Methods for propagating the measurement information through the network are also disclosed as well as network nodes performing such method.
    Type: Application
    Filed: March 19, 2019
    Publication date: June 16, 2022
    Inventors: Torbjörn Wigren, Sholeh Yasini, Iana Siomina
  • Patent number: 11362713
    Abstract: Methods, apparatus and computer programs are disclosed for controlling the output of a transmission point for a wireless communications network. One embodiment provides a method for controlling the output of a transmission point for a wireless communications network. The method comprises determining an average output power of the transmission point over a period of time; comparing the average output power to an output power reference value; and allocating data, to be transmitted by the transmission point to one or more wireless devices, to a pool of radio resources. The pool of radio resources is adjusted as a function of the comparison between the average output power and the output power reference value, and the output power reference value varies as a function of a maximum antenna gain of an antenna array of the transmission point during the period of time.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: June 14, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Torbjörn Wigren, Svante Bergman, George Jöngren
  • Publication number: 20220166478
    Abstract: Mechanisms for controlling average Equivalent Isotropic Radiated Power (EIRP) of a radio base station, in which a method is performed by a control device. The method comprises performing control of average EIRP of the radio base station according to a back-off power density control loop. In the back-off power density control loop, a beam width control parameter is used to vary the average EIRP generated by an antenna array of the radio base station, whereby the average EIRP is selectively reduced based on the beam width control parameter.
    Type: Application
    Filed: April 2, 2019
    Publication date: May 26, 2022
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Torbjörn WIGREN
  • Patent number: 11296765
    Abstract: A method by a first network node for handling directions of transmission of beamformed beams by a first radio network node. Both nodes operate in a wireless communications network. The first network node determines, out of a set of directions in which the first radio network node is capable of transmitting the beams, a subset of directions of transmission of the beams having a probability of detection above a threshold, by a first wireless device. The determining is based on data obtained from previous attempts of positioning one or more second wireless devices using at least some of the directions. The first network node also initiates providing, to at least one of the first radio network node and a second network node operating in the wireless communications network, an indication of the determined subset.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: April 5, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Torbjörn Wigren, Richard Middleton, Ramon Delgado, Katrina Lau, Iana Siomina
  • Publication number: 20220103213
    Abstract: There is provided a method for adjusting beam gain in a radio network node comprising a plurality of antenna elements. The radio network node is configured with a codebook comprising a plurality of predetermined precoding matrices. The method comprises: determining a direction from the radio network node to a target wireless device, and a configured beam gain value in the determined direction; adapting one or more of the plurality of predetermined precoding matrices to generate an adapted precoding matrix in which the beam gain is maximal in the determined direction and equal to or less than the configured beam gain value; and applying the adapted precoding matrix to signals output to the plurality of antenna elements for transmission to the target wireless device.
    Type: Application
    Filed: January 9, 2020
    Publication date: March 31, 2022
    Inventors: Torbjörn Wigren, Jonas Karlsson
  • Publication number: 20220078745
    Abstract: Embodiments include methods for managing a bidirectional measurement for an uplink/downlink pair of links between one or more first nodes and one or more second nodes in a wireless network. Methods include obtaining a transmit timing of a first signal on a first link of the pair during a first time resource, obtaining a receive timing of a second signal on a second link of the pair during a second time resource, and determining the bidirectional measurement based on the obtained transmit timing and obtained receive timing. In this arrangement, at least one of the following applies: the first and second links are between one first node and two respective second nodes; at least one of the first link and the second link are associated with a non-serving carrier frequency; and at least one of the first link and the second link are managed via one or more beams.
    Type: Application
    Filed: January 19, 2020
    Publication date: March 10, 2022
    Inventors: Iana SIOMINA, Torbjörn WIGREN, Sholeh YASINI
  • Patent number: 11272403
    Abstract: The present disclosure relates to methods and nodes configured for control link definition in a networked control system, wherein the networked control system comprises a controlling node, a controlled process node and a Machine Type Communication, MTC, wireless communication link between the controlling node and the controlled process node. The method comprises to obtain process characteristics for a process performed in the controlled process node and NCS requirements for an automatic control process to be performed in the NCS. The controlling node also determines link capability requirements for the MTC wireless communication link based on the process characteristics and the NCS requirements. One or more quality of service, QoS, parameters of the MTC wireless communication link are customized based on the determined link capability requirements.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: March 8, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Torbjörn Wigren, Johan Bergman, Ari Kangas
  • Publication number: 20220038149
    Abstract: A method for wireless backhaul inter-node communication between a first backhaul node and a second backhaul node is provided. The method includes computing a beamforming weight matrix W; and the first backhaul node using the beamforming weight matrix W to transmit and/or receive data to and/or from the second backhaul node. The beamforming matrix W is computed as the inverse of a weighted channel estimate matrix (Formula I), such that W=(Formula II), where ? is a channel estimate matrix and ? is a weighting factor matrix such that (Formula III) where ? has dimension Nrx by Ntx, where Nrx is the number of receive antennas and Ntx is the number of transmit antennas, where Ntx,=Nrx, and ? is a scalar between 0 and 1, and where ? denotes a Hadamard matrix product.
    Type: Application
    Filed: September 27, 2018
    Publication date: February 3, 2022
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Torbjörn WIGREN, Ari KANGAS
  • Publication number: 20220038152
    Abstract: Methods, devices and computer programs for determining new transmit directions to use for beamformed transmissions in case the link quality of an existing direction falters. A transmitting communication device and a receiving communication device cooperate via a beam tracking procedure to determine a new suitable transmit direction to use for upcoming beamformed transmissions. Information relating to the beam tracking procedure is communicated over an existing link that enables communication between the transmitting and receiving communication devices. The receiving communication device provides the transmitting communication device with information about a beam scan performed in order to detect tracking beams transmitted by the transmitting communication device. This information allows the transmitting communication device to determine suitable transmit directions to use.
    Type: Application
    Filed: October 14, 2021
    Publication date: February 3, 2022
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Torbjörn WIGREN, Oskar MAURITZ
  • Publication number: 20220014245
    Abstract: A method for adjusting beam gain in a radio network node. The method comprises: obtaining a channel estimate based on a reference signal transmitted by a target wireless device; applying a set of weights to the channel estimate to obtain a weighted channel estimate; and outputting the weighted channel estimate for use in determining beamforming weights to be applied to signals output to a plurality of antenna elements for transmission to the target wireless device, wherein the beamforming weights are determined as a function of the weighted channel estimate.
    Type: Application
    Filed: January 9, 2020
    Publication date: January 13, 2022
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Torbjörn WIGREN