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).

  • Publication number: 20210227462
    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: Application
    Filed: April 8, 2021
    Publication date: July 22, 2021
    Inventors: Markus Drevö, Håkan Axelsson, Stefan Johansson, Paul Schliwa-Bertling
  • Patent number: 11044767
    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 22, 2017
    Date of Patent: June 22, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Stefan Johansson, Rasmus Axén
  • Publication number: 20210185570
    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: Application
    Filed: August 22, 2018
    Publication date: June 17, 2021
    Inventors: Linnea Faxén, Stefan Engström, Stefan Johansson
  • Patent number: 11018782
    Abstract: A method (20) of determining sign of a calibration compensation for use in an antenna system (10) is provided, the antenna system (10) comprising individually calibrated subarrays (2a, 2b).
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: May 25, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Henrik Jidhage, Henrik Hallenberg, Stefan Johansson
  • Patent number: 11006359
    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: November 27, 2017
    Date of Patent: May 11, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Markus Drevö, Håkan Axelsson, Stefan Johansson, Paul Schliwa-Bertling
  • Patent number: 10911963
    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: Grant
    Filed: May 11, 2020
    Date of Patent: February 2, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Sven Petersson, Bo Hagerman, Martin Johansson, Stefan Johansson
  • Publication number: 20200336224
    Abstract: A method (20) of determining sign of a calibration compensation for use in an antenna system (10) is provided, the antenna system (10) comprising individually calibrated subarrays (2a, 2b).
    Type: Application
    Filed: May 24, 2016
    Publication date: October 22, 2020
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Henrik JIDHAGE, Henrik HALLENBERG, Stefan JOHANSSON
  • Publication number: 20200266729
    Abstract: An ultrasonic electromechanical stator includes two vibration bodies, a link member connecting the two vibration bodies along a connection direction and a stator support. Each of the vibration bodies includes a respective electromechanical element and is configured to perform bending vibrations in a bending direction when an alternating voltage is applied to the electromechanical elements. The link member has a contact portion intended for contacting a surface of a body to be moved. The link member has a respective mechanical link connecting portion to the vibrating bodies. Each of the vibration bodies is mechanically attached to the stator support by at least two attachment tabs on at least one side, in a direction transverse to both the connection direction and the bending direction, of the respective vibration bodies. Also an ultrasonic electromechanical motor having such an ultrasonic electromechanical stator is disclosed.
    Type: Application
    Filed: August 15, 2018
    Publication date: August 20, 2020
    Inventors: Andreas DANELL, Stefan JOHANSSON, Jan SÖDERKVIST
  • Patent number: 10715378
    Abstract: Systems and methods are disclosed for hash-based selection of network packets for packet flow sampling in network communication systems. Input packets associated with packet flows within a network communication system are received by a hash-based sampler. The hash-based sampler then generates hash values for the input packets based upon fields within the input packets. These fields are selected to identify packet flows for the input packets. The hash values for the input packets are then compared to a mask. The mask is configured to determine a subset of packet flows for which to forward packets. Based upon this comparison, certain input packets are selected to be forwarded for further processing, and non-selected packets are discarded. The further processing can include processing the selected input packets to generate flow statistics data (e.g., IPFIX) for the selected input packets.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: July 14, 2020
    Assignee: Keysight Technologies Singapore (Sales) Pte. Ltd.
    Inventor: Stefan Johansson
  • Publication number: 20200221515
    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: Application
    Filed: June 22, 2017
    Publication date: July 9, 2020
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Stefan JOHANSSON, Rasmus AXÉN
  • Patent number: 10700418
    Abstract: The present invention relates to an antenna comprising multiple array elements with a first and second feeding point, each associated with orthogonal polarizations, each array element has a first and second phase centre each associated with the orthogonal polarizations, the first and second phase centres of said array elements are arranged in at least two columns, and one antenna port connected to the first and second feeding points of at least two array elements with first phase centre and second phase centre arranged in the at least two columns via a respective feeding network. The feeding network comprises a beam forming network having a primary connection, connected to the antenna port, and at least four secondary connections. The beam forming network divides power between the first feeding point and the second feeding point and controls phase shift differences between the respective feeding points with phase centre arranged in different columns.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: June 30, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Stefan Johansson, Martin Johansson, Sven Oscar Petersson
  • Publication number: 20200196232
    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: Application
    Filed: November 27, 2017
    Publication date: June 18, 2020
    Inventors: Markus Drevö, Håkan Axelsson, Stefan Johansson, Paul Schliwa-Bertling
  • Patent number: 10680917
    Abstract: Traffic differentiator systems for network devices and related methods are disclosed that include automatic port order determination. The disclosed embodiments includes input ports that receive a first stream of packets and a second stream of packets and a packet difference processor that operates in a learning mode and a normal mode. In the learning mode of operation, the packet difference processor automatically determines a port order representing whether the first stream of packets for the first port or the second stream of packets for the second port represents a first in time version of received packets. In the normal mode of operation, the packet difference processor uses the port order determination to facilitate determination of difference packets between the first stream of packets and the second stream of packets.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: June 9, 2020
    Assignee: KEYSIGHT TECHNOLOGIES SINGAPORE (SALES) PTE. LTD.
    Inventors: Stefan Johansson, David W. McGhee
  • Patent number: 10660150
    Abstract: A system and method is introduced for flexible user equipment (“UE”) identification. In one embodiment, the method includes providing a first message from a user equipment (110) to a radio access node (120) to resume a passive user equipment context. The message includes a UE identifier (400) having a flag (410) indicating if the user equipment (110) is resuming connectivity to the radio access node (120) and a first local UE identifier (420) for the radio access node (120).
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: May 19, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Paul Schliwa-Bertling, Håkan Axelsson, Stefan Johansson, Thomas Walldeen, Magnus Stattin
  • Patent number: 10613139
    Abstract: Embodiments disclosed herein are directed towards systems and methods for electric current leakage detection in a land seismic system. Embodiments may include generating at least one test signal using a digital to analog converter “DAC” circuitry, wherein the DAC circuitry includes an output operatively connected to earth ground. Embodiments may further include alternately grounding a positive path to an analog to digital converter “ADC” circuitry during a first time window and a negative path to the analog to digital converter during a second time window while measuring an ADC signal. Embodiments may also include determining an average amplitude of the first time window and the second time window and determining a leakage resistance based upon, at least in part, the average amplitude of the first time window and the second time window.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: April 7, 2020
    Assignee: WesternGeco L.L.C
    Inventors: Kambiz Iranpour, Stefan Johansson, Hans Paulson
  • Publication number: 20200053809
    Abstract: A technique for providing multiple connectivity to a terminal device by at least a first Radio Access Network, RAN entity and a second RAN entity is disclosed. The first RAN entity serves as a control plane anchor and the split bearer will be anchored at the second RAN entity. The method comprises triggering, by the first RAN entity, the second RAN entity to set up the split bearer on the user plane. The split bearer comprises at least a first bearer leg from the second RAN entity via the first RAN entity to the terminal device and a second bearer leg from the second RAN entity to the terminal device without going through the first RAN entity.
    Type: Application
    Filed: October 17, 2016
    Publication date: February 13, 2020
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Håkan AXELSSON, Rasmus AXÉN, Rui FAN, Stefan JOHANSSON, Paul SCHLIWA-BERTLING
  • Patent number: 10327276
    Abstract: A method for evaluating a connection between a first network node and a User Equipment (UE) via a second cell. The first network node serves a first cell. A sending of a first message is initiated. The first message is sent from the first network node to the UE via the second cell. The first message comprises a trigger for the UE to respond by sending a second message comprising feedback relating to the connection to the second cell. A time value difference between the sending of said first message and receiving of said second message in the first network node is obtained. The second message comprises the feedback relating to the connection sent from the UE in response to the first message. Then it is evaluated how the connection shall be used based on the obtained time value difference and the received feedback.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: June 18, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Walter Müller, Rasmus Axén, Stefan Johansson, Sofia Svedevall
  • Patent number: 10230667
    Abstract: Pre-sorter systems and methods are disclosed for distributing GTP packets. The pre-sorter forwards GTP packets based upon entries within one or more pre-sort tables, and the entries associate F-TEIDs with output ports that can be coupled to GTP sessions controllers and/or other external systems. The F-TEIDs represent a combination of a destination IP address and a tunnel endpoint identifier (TEID) for each GTP packet. For some embodiments, GTP session controllers analyze the GTP packets and determine F-TEIDs that are created, modified, and/or dropped for user sessions, and the GTP session controllers send control messages to the pre-sorter to determine the entries stored within the pre-sort table(s). For other embodiments, other external systems such as network monitoring tools are coupled to the GTP packet pre-sorter rather than GTP session controllers. Pre-sorters having multiple pre-sort modules with local pre-sort tables, as well as two-stage pre-sort architectures, can also be used.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: March 12, 2019
    Assignee: Keysight Technologies Singapore (Holdings) Pte Ltd
    Inventors: Stefan Johansson, Robin O'Connor
  • Publication number: 20190072610
    Abstract: Embodiments disclosed herein are directed towards systems and methods for electric current leakage detection in a land seismic system. Embodiments may include generating at least one test signal using a digital to analog converter “DAC” circuitry, wherein the DAC circuitry includes an output operatively connected to earth ground. Embodiments may further include alternately grounding a positive path to an analog to digital converter “ADC” circuitry during a first time window and a negative path to the analog to digital converter during a second time window while measuring an ADC signal. Embodiments may also include determining an average amplitude of the first time window and the second time window and determining a leakage resistance based upon, at least in part, the average amplitude of the first time window and the second time window.
    Type: Application
    Filed: March 15, 2017
    Publication date: March 7, 2019
    Inventors: Kambiz Iranpour, Stefan Johansson, Hans Paulson
  • Publication number: 20190045573
    Abstract: A system and method is introduced for flexible user equipment (“UE”) identification. In one embodiment, the method includes providing a first message from a user equipment (110) to a radio access node (120) to resume a passive user equipment context. The message includes a UE identifier (400) having a flag (410) indicating if the user equipment (110) is resuming connectivity to the radio access node (120) and a first local UE identifier (420) for the radio access node (120).
    Type: Application
    Filed: February 3, 2017
    Publication date: February 7, 2019
    Inventors: Paul SCHLIWA-BERTLING, Håkan AXELSSON, Stefan JOHANSSON, Thomas WALLDEEN, Magnus STATTIN