Patents by Inventor Stefan Johansson

Stefan Johansson 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).

  • Patent number: 12170405
    Abstract: The present disclosure relates to an antenna element comprising a lower conducting plane, an upper conducting plane and an upper dielectric layer structure that is positioned between the conducting planes. The upper dielectric layer structure comprises a plurality of conducting vias that electrically connect the conducting planes to each other and circumvent an upper radiating patch formed in, below or above the upper conducting plane. The conducting vias circumvent at least one intermediate radiating patch that is formed in the upper dielectric layer structure, and a lowest intermediate radiating patch that is closest to the lower conducting plane is connected to a feed arrangement that comprises at least one feeding probe that extends via a corresponding aperture in the lower conducting plane and is electrically connected to the lowest intermediate radiating patch.
    Type: Grant
    Filed: January 4, 2023
    Date of Patent: December 17, 2024
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Stefan Johansson, Hawal Rashid
  • Publication number: 20240410574
    Abstract: A compact waste combustion system deployed within a portable toilet has a burn chamber that includes a processor, a burner, a trapdoor mechanism configured to seal an entrance to the burn chamber when the compact waste combustion system is operated in a first mode and a waste receptacle configured to feed waste material to the burn chamber through the trapdoor mechanism in a second mode of operation. The processor may be configured to detect presence of a waste in the waste receptacle, configure the system to operate in the second mode and to pass waste into the burn chamber, configure the compact waste combustion system to operate in the first mode after the waste has passed into the burn chamber, and activate the burner when the compact waste combustion system is operated in the first mode and the waste is located in the burn chamber.
    Type: Application
    Filed: April 15, 2024
    Publication date: December 12, 2024
    Inventor: Stefan Johansson
  • Publication number: 20240373795
    Abstract: A horticulture tray comprising a plurality of growing cells configured to hold a plant. Each one of the plurality of growing cells includes spaced apart sidewalls defining air gap openings therebetween. The plurality of growing cells are arranged in rows and columns which are aligned. The horticulture tray is rectangular with an outer wall extending around a periphery of the horticulture tray. The plurality of growing cells are arranged such that sidewalls of horizontally adjacent growing cells are aligned and face each other to block direct line of sight between the horizontally adjacent growing cells to block root travel between the horizontally adjacent growing cells.
    Type: Application
    Filed: July 29, 2022
    Publication date: November 14, 2024
    Inventor: Stefan JOHANSSON
  • Patent number: 12130317
    Abstract: There is provided mechanisms for OTA calibration of an AAS. The AAS comprises N antenna branches, each of which comprises a respective subarray. The subarray of each antenna branch gives rise to a subarray antenna pattern extending over an angular interval. A method is performed by a test equipment. The method comprises obtaining measurement values for each of the antenna branches. At least one measurement value is obtained per each antenna branch. The method comprises determining one calibration factor value per antenna branch using the measurement values and taking the subarray antenna patterns into account. The method comprises applying the determined calibration factor values to the N antenna branches, thereby calibrating the AAS.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: October 29, 2024
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Henrik Jidhage, Stefan Johansson, Tomas Lieback
  • Publication number: 20240292287
    Abstract: A method performed by a first network node for steering data traffic in a communication with a User Equipment, UE, in a wireless communications network is provided. The first network node sends (601) a request to a second network node. The 5 request requests to set up an interface between the first network node hosting a first cell and a second network node hosting a second cell. The second cell is a neighbor to the first cell. The first network node receives (602) a message from the second network node over the requested set up interface. The message comprises indications indicating that: A third cell provided by a third network node is a neighbor to the second cell, the second cell 10 is supporting multi carrier connectivity towards the third cell, and the third cell is supporting multi carrier connectivity towards the second cell.
    Type: Application
    Filed: June 21, 2021
    Publication date: August 29, 2024
    Inventors: Daniel Henriksson, Linnea Faxen, Stefan Johansson, Magnus Degerfalk
  • Publication number: 20240275075
    Abstract: An advanced antenna system, AAS, comprising a plurality of antenna elements (210), where the AAS extends on a surface (S) defined by a normal vector (N), where an x-direction (x) at a point (P) on the surface (S) is parallel to the normal vector (N) at the point (P), where a z-direction (z) at the point (P) on the surface (S) is tangent to the surface (S) and orthogonal to the x-direction (x), where a y-direction (y) at the point (P) on the surface (S) is tangent to the surface (S) and orthogonal to both the x-direction (x) and the z-direction (z), where the antenna elements (210) are arranged in at least three columns (230) extending in the z-direction (z) on the surface (S), where each column (230) comprises at least two antenna elements (210), where at least two of the columns (230) are arranged offset in the z-direction at respective non-zero offset distances (O), relative to a reference column (REF) of the AAS, such that a first offset distance of a first column differs from a second offset distance of a
    Type: Application
    Filed: June 15, 2021
    Publication date: August 15, 2024
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Stefan Johansson, Sven Petersson, Henrik Jidhage
  • Publication number: 20240259994
    Abstract: A first network node that is a first Next Generation Node B, gNB, is described. The first network node includes processing circuitry configured to receive, from within the first network node, a first information indicative of an open systems interconnection, OSI, Layer 1, L1, configuration of at least two cells served by the first network node. The at least two cells are candidate cells. The processing circuitry is further configured to make a Wireless Device, WD, mobility decision by considering at least a performance gain of the candidate cells. The performance gain is determined based on the received first information indicative of the OSIL1 configuration. Methods, systems, and other apparatuses are also disclosed.
    Type: Application
    Filed: July 28, 2021
    Publication date: August 1, 2024
    Inventors: Magnus DEGERFALK, Stefan JOHANSSON, Linnea JOHNANDER FAXÉN, Daniel HENRIKSSON
  • Patent number: 11959635
    Abstract: A compact waste combustion system deployed within a portable toilet has a burn chamber that includes a processor, a burner, a trapdoor mechanism configured to seal an entrance to the burn chamber when the compact waste combustion system is operated in a first mode and a waste receptacle configured to feed waste material to the burn chamber through the trapdoor mechanism in a second mode of operation. The processor may be configured to detect presence of a waste in the waste receptacle, configure the system to operate in the second mode and to pass waste into the burn chamber, configure the compact waste combustion system to operate in the first mode after the waste has passed into the burn chamber, and activate the burner when the compact waste combustion system is operated in the first mode and the waste is located in the burn chamber.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: April 16, 2024
    Inventor: Stefan Johansson
  • Publication number: 20240072434
    Abstract: Embodiments described herein relate to an active antenna system. The active antenna system comprises an antenna array wherein the antenna array comprises a plurality of sub-arrays; a plurality of feed networks configured to couple respective signals from the plurality of sub-arrays to respective radio chains; and at least one coupling path configured to provide coupling between a first feed network and a second feed network, wherein the first feed network is coupled to a first sub-array and the second feed network is coupled to a second sub-array, wherein the coupling is of a higher magnitude than a lowest magnitude of mutual aperture couplings occurring between antenna elements in the first sub-array and the second sub-array.
    Type: Application
    Filed: November 16, 2021
    Publication date: February 29, 2024
    Inventors: Christian Braun, Stefan Johansson, Haitao Liu
  • Patent number: 11825357
    Abstract: The invention relates to methods and devices for enabling a connection of a wireless communication device released by a source radio base station to be resumed by a target radio base station. In a first aspect, a method of a source radio base station of enabling a connection of a wireless communication device released by the source radio base station to be resumed by a target radio base station is provided. The method comprises acquiring an indication that a connection established with the wireless communication device is to be released, identifying a target base station with which the connection to be released can be resumed for the wireless communication device, and transmitting, to the identified target base station, information required to resume the connection to be released by the source base station for the wireless communication device.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: November 21, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Linnea Faxén, Stefan Engström, Stefan Johansson
  • Patent number: 11778550
    Abstract: The disclosure provides methods in a network node for a telecommunications network. In one method, the network node operates as a primary network node for a wireless terminal configured with dual connectivity, and the method comprises: receiving a message indicating that a secondary network node, which provides user plane connectivity for the wireless terminal, has no data to transmit to the wireless terminal; and based at least in part on the received message, configuring the wireless terminal in an inactive mode.
    Type: Grant
    Filed: April 8, 2021
    Date of Patent: October 3, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Markus Drevö, Håkan Axelsson, Stefan Johansson, Paul Schliwa-Bertling
  • Publication number: 20230269641
    Abstract: A wireless communication system comprises a wireless node for communication with wireless devices camping on a first cell, the node including a local control unit controlling communication between the system and the wireless devices, the system further comprising a first signalling control unit and a second signalling control unit), both provided for handling signalling of a first group of cells at least including the first cell and each providing a different cell identity for this cell, wherein the first signalling control unit acts as a primary signalling control unit for the first group of cells and the second signalling control unit acts as a secondary signalling control unit for the first group of cells into a backup signalling control unit for the primary signalling control unit.
    Type: Application
    Filed: June 15, 2020
    Publication date: August 24, 2023
    Inventors: Thomas WALLDEEN, Fredrik JONSSON, Fredrik SONNEVI, Stefan JOHANSSON
  • Patent number: 11721892
    Abstract: The present disclosure relates to a planar antenna structure (100, 200, 800, 900) comprising at least one radiating aperture (101, 201 801, 901), adapted for a certain working frequency band, and an electrically conducting surface structure (102, 202, 802, 902) that is constituted by at least one surface part and is surrounding at least one radiating aperture (101, 201, 801, 901) and having a certain extension (T). The planar antenna structure (100, 200, 800, 900) comprises at least one continuous groove (103, 104; 203, 204; 803, 804; 903, 904) that forms a slot in the surface structure (102, 202, 802, 902), where each groove (103, 104) is defined by an at least virtual electric wall that is electrically connected to the surface structure (102, 202, 802, 902) and forms a continuous electromagnetic wall in the surface structure (102, 202, 802, 902) at the working frequency band. In this manner, that propagation of surface waves via the at least one groove (103, 104; 203, 204; 803, 804; 903, 904) is reduced.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: August 8, 2023
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Stefan Johansson, Hawai Rashid
  • Publication number: 20230223705
    Abstract: The present disclosure relates to an antenna element comprising a lower conducting plane, an upper conducting plane and an upper dielectric layer structure that is positioned between the conducting planes. The upper dielectric layer structure comprises a plurality of conducting vias that electrically connect the conducting planes to each other and circumvent an upper radiating patch formed in, below or above the upper conducting plane. The conducting vias circumvent at least one intermediate radiating patch that is formed in the upper dielectric layer structure, and a lowest intermediate radiating patch that is closest to the lower conducting plane is connected to a feed arrangement that comprises at least one feeding probe that extends via a corresponding aperture in the lower conducting plane and is electrically connected to the lowest intermediate radiating patch.
    Type: Application
    Filed: January 4, 2023
    Publication date: July 13, 2023
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Stefan JOHANSSON, Hawal RASHID
  • Publication number: 20230211863
    Abstract: A marine drive unit for a boat includes a cooling compartment arranged in a drive unit body. The cooling compartment forms part of a closed cooling circuit, where the cooling circuit is arranged to cool propulsion components of the boat, where the cooling compartment comprises an inlet opening, an inlet channel, a lower end, an outlet channel and an outlet opening, where the inlet channel forms a first flow path for a cooling fluid from the inlet opening to the lower end of the cooling compartment. The outlet channel forms a second flow path for the cooling fluid from the lower end of the cooling compartment to the outlet opening, thereby allowing heat from the cooling fluid to dissipate through the outer wall of the drive unit.
    Type: Application
    Filed: November 2, 2022
    Publication date: July 6, 2023
    Applicant: VOLVO PENTA CORPORATION
    Inventors: Anders Rydström, Stig Johansson, Lars-Gunnar Carlsson, Stefan Johansson
  • Publication number: 20230189018
    Abstract: The present invention relates to an active antenna system, AAS, for controlling coverage in a telecommunication network, and the AAS comprising a plurality of subarrays each having multiple radiating elements. The AAS is configured to provide coverage in a coverage angular range and the plurality of subarrays comprising at least two types of subarrays. The at least two types of subarrays comprises: a first type of subarray with a first radiation pattern having at least a first angular region with gain below a first threshold value, and a second type of subarray with a second radiation pattern having at least a second angular region with gain below a second threshold value, wherein the second radiation pattern deviates from the first radiation pattern and the first angular region in the first radiation pattern differs from the second angular region in the second radiation pattern.
    Type: Application
    Filed: April 21, 2021
    Publication date: June 15, 2023
    Inventors: Sven Petersson, Bo Hagerman, Martin Johansson, Stefan Johansson
  • Patent number: 11649821
    Abstract: A power generating unit including a hydraulic unit; an interface unit connected to the hydraulic unit, the interface unit being connectable to a stationary unit; a power flow shaft connected between the hydraulic unit and the interface unit for supply of a torque load therebetween; and at least one connecting element arranged between the hydraulic unit and the interface unit, the at least one connecting element being controllable between a first state in which a relative rotation between the hydraulic unit and the interface unit is allowed, and a second state in which a relative rotation between the hydraulic unit and the interface unit is prevented.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: May 16, 2023
    Assignees: Volvo Truck Corporation, Parker Hannifin Manufacturing Sweden AB
    Inventors: Benny Liljeblad, Stefan Johansson, Lars R. Nilsson
  • Publication number: 20230142772
    Abstract: The present disclosure relates to an array antenna arrangement comprising at least one set of at least two sub-array antennas. Each set of sub-array antennas is mounted such that a corresponding array antenna column is formed. For each polarization in each set of sub-array antennas, each sub-array antenna comprises a corresponding sub-array antenna port that is associated with a certain sub-array antenna beam pointing direction setting, and each sub-array antenna port is connected to a corresponding radio chain in a set of radio chains, where each set of radio chains is adapted to provide a corresponding digital antenna beam pointing direction setting. In at least one set of sub-array antennas, at least one sub-array beam pointing direction setting, differs from a corresponding digital antenna beam pointing direction setting.
    Type: Application
    Filed: March 18, 2020
    Publication date: May 11, 2023
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Stefan JOHANSSON, Henrik JIDHAGE
  • Patent number: 11622396
    Abstract: A method of setting up a wireless connection for a communication device. The method is performed in a network node and comprises receiving, from the communication device, a service request, the request comprising a destination identifier of a destination providing a service, and configuring, based on the destination identifier, the communication device for one of: multi-connectivity and single-connectivity.
    Type: Grant
    Filed: June 16, 2021
    Date of Patent: April 4, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Stefan Johansson, Rasmus Axén
  • Publication number: 20230017555
    Abstract: There is provided mechanisms for OTA calibration of an AAS. The AAS comprises N antenna branches, each of which comprises a respective subarray. The subarray of each antenna branch gives rise to a subarray antenna pattern extending over an angular interval. A method is performed by a test equipment. The method comprises obtaining measurement values for each of the antenna branches. At least one measurement value is obtained per each antenna branch. The method comprises determining one calibration factor value per antenna branch using the measurement values and taking the subarray antenna patterns into account. The method comprises applying the determined calibration factor values to the N antenna branches, thereby calibrating the AAS.
    Type: Application
    Filed: December 12, 2019
    Publication date: January 19, 2023
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Henrik JIDHAGE, Stefan JOHANSSON, Tomas LIEBACK