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: 9960825
    Abstract: The present invention relates to a method and control system for adapting beam patterns generated by at least one array antenna serving one or more users. Each array antenna comprising multiple antenna subarrays within an aperture and is configured to provide coverage to a service area using a set of fixed beams, each fixed beam having a beam pattern covering a portion of the service area which beam pattern is generated by applying weights to the antenna subarrays.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: May 1, 2018
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Lars Manholm, Sven Petersson, Stefan Johansson
  • Patent number: 9955419
    Abstract: A method performed by a wireless device for handling suspension of a connection between the wireless device and a wireless communications network. The wireless communications network comprises the first network node. The wireless device receives information from the first network node. The information comprises a first identifier identifying a first cell area. The first cell area comprises one or more cells capable of resuming the connection. The wireless device suspends the connection in a first cell out of the one or more cells. When selecting a cell access method for a cell the wireless device determines whether or not resumption of the connection is allowed in the cell based on the information from the network node.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: April 24, 2018
    Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventors: Paul Schliwa-Bertling, Thomas Walldeen, Stefan Johansson, Håkan Axelsson
  • Publication number: 20180109977
    Abstract: A network node, a network control node and methods therein for achieving load based signaling. The method performed by the network node includes determining a load level out of a set of predefined load levels based on a current load of the network node, where each load level corresponds to an estimated capability of the network node to handle signaling from at least one network control node. The method further includes indicating the determined load level to at least one network control node, thus enabling the at least one network control node to apply a signaling handling scheme towards the network node based on the indicated load level.
    Type: Application
    Filed: April 27, 2015
    Publication date: April 19, 2018
    Inventors: Diana ANDREI, Samuel AXELSSON, Stefan JOHANSSON
  • Patent number: 9924460
    Abstract: A method performed by a first network node for handling a connection between a wireless device and a wireless communications network. The wireless communications network comprises the first network node. The first network node stores (705) data related to the connection, and further stores an identifier of the wireless device for locating the stored data related to the connection later. The first network node further provides (706) the wireless device with a command to transition from a connected mode into a suspended mode, in which suspended mode the connection is suspended and the wireless device stores the data related to the connection, and further stores the identifier of the wireless device for locating the stored data later in order to resume the connection.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: March 20, 2018
    Assignee: Telefonaktiebolaget LM Ericcson (publ)
    Inventors: Thomas Walldeen, Håkan Axelsson, Stefan Johansson, Paul Schliwa-Bertling
  • Publication number: 20180069302
    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: Application
    Filed: September 15, 2017
    Publication date: March 8, 2018
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Stefan JOHANSSON, Martin JOHANSSON, Sven Oscar PETERSSON
  • Publication number: 20180048543
    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: Application
    Filed: October 24, 2017
    Publication date: February 15, 2018
    Inventors: Stefan Johansson, David W. McGhee
  • Publication number: 20180026683
    Abstract: The present invention relates to a method and control system for adapting beam patterns generated by at least one array antenna serving one or more users. Each array antenna comprising multiple antenna subarrays within an aperture and is configured to provide coverage to a service area using a set of fixed beams, each fixed beam having a beam pattern covering a portion of the service area which beam pattern is generated by applying weights to the antenna subarrays.
    Type: Application
    Filed: March 6, 2015
    Publication date: January 25, 2018
    Inventors: Lars Manholm, Sven Petersson, Stefan Johansson
  • Patent number: 9832084
    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: December 15, 2014
    Date of Patent: November 28, 2017
    Assignee: Keysight Technologies Singapore (Holdings) PTE LTD
    Inventors: Stefan Johansson, David W. McGhee
  • Patent number: 9768494
    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: February 8, 2010
    Date of Patent: September 19, 2017
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Stefan Johansson, Martin Johansson, Sven Oscar Petersson
  • Publication number: 20170215118
    Abstract: A method in a radio network node for determining whether a wireless device is a suitable candidate for handover to a target cell for load balancing reasons. The radio network node serves a source cell. The method includes determining a first level of coverage of the target cell based on a first measurement report. The method further includes storing measurement data obtained from a second measurement, being at least one of a layer 2 and a layer 1 measurement. The method further includes establishing a correlation between the determined first level of coverage and the stored measurement data and updating statistical data based on the established correlation. The method further includes determining whether the wireless device is a suitable candidate for handover to the target cell for load balancing reasons, based on the updated statistical data.
    Type: Application
    Filed: August 8, 2014
    Publication date: July 27, 2017
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Håkan AXELSSON, Samuel AXELSSON, Fredrik GUNNARSSON, Stefan JOHANSSON, Parisa PAKNIAT
  • Publication number: 20170188248
    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: Application
    Filed: June 12, 2015
    Publication date: June 29, 2017
    Inventors: Walter MÜLLER, Rasmus AXÉN, Stefan JOHANSSON, Sofia SVEDEVALL
  • Publication number: 20170086065
    Abstract: The present disclosure relates to methods and an identity mediator node for controlling a user equipment, UE, identity, ID, dependent service in a radio base station, RBS of a wireless network. The method comprises receiving (S1) from a Mobility Management Entity, MME, a UE ID report comprising a permanent UE ID, a temporary UE ID, and a serving RBS identity for an RBS serving the UE, wherein the temporary UE ID represents an identifier for the UE in the serving RBS. The identity mediator node stores (S2) a record associating the temporary UE ID, the serving RBS identity, and the permanent UE ID record. When an order to activate a UE ID dependent service for a permanent UE ID is detected (D1) in the identity mediator node, the identity mediator node retrieves (S4) the temporary UE ID and serving RBS identity from the stored record. A request is sent (S5) to the serving RBS to activate the UE ID dependent service for the UE, wherein the request includes the temporary UE ID.
    Type: Application
    Filed: March 17, 2014
    Publication date: March 23, 2017
    Inventors: Per Einarsson, Stefan Johansson
  • Patent number: 9521083
    Abstract: Traffic differentiator systems for network devices and related methods are disclosed that determine difference packets from multiple packet streams. Some embodiments are configured to receive two streams of packets with one stream being a processed version of another stream and then to determine difference packets within a lookup time window that is, for example, associated with a processing time for the second stream to be a processed version of the first stream. Difference packets within a lookup time window can also be determined for packets received within a single combined stream of packets. Difference packets and/or related statistical information is then output for additional processing, as desired. The streams of packets can be associated with ingress and egress packets for a network device, and the difference packets and related statistical information can be used to determine packets that are removed, added, and/or modified by the network device.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: December 13, 2016
    Assignee: Anue Systems, Inc.
    Inventors: Stefan Johansson, David W. McGhee, Shardendu Pandey, Cary J. Wright, Scott Register
  • Publication number: 20160345261
    Abstract: A method performed by a first network node for handling a connection between a wireless device and a wireless communications network. The wireless communications network comprises the first network node. The first network node stores (705) data related to the connection, and further stores an identifier of the wireless device for locating the stored data related to the connection later. The first network node further provides (706) the wireless device with a command to transition from a connected mode into a suspended mode, in which suspended mode the connection is suspended and the wireless device stores the data related to the connection, and further stores the identifier of the wireless device for locating the stored data later in order to resume the connection.
    Type: Application
    Filed: October 20, 2015
    Publication date: November 24, 2016
    Inventors: Thomas WALLDEEN, Håkan AXELSSON, Stefan JOHANSSON, Paul SCHLIWA-BERTLING
  • Publication number: 20160337910
    Abstract: A method in a network node for sending a message to a first group of wireless devices. The first group of wireless devices is served by a Primary Cell. The network node and the first group of wireless devices operate in a wireless communications network. The network node sends a single message to the first group of wireless devices. The wireless devices in the first group of wireless devices are in carrier aggregation mode, being further served by a Secondary Cell, SCell, of the network node. The single message comprises a first common Radio Network Temporary Identifier addressing all the wireless devices in the first group of wireless devices. The single message further comprises information related to the SCell.
    Type: Application
    Filed: December 19, 2013
    Publication date: November 17, 2016
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Peter WERNER, Stefan JOHANSSON, Paul SCHLIWA-BERTLING
  • Publication number: 20160337941
    Abstract: The present disclosure relates to a method in a radio access controller in a first radio access network for providing access control in a wireless network comprising the first radio access network arranged to operate according to a first radio access technology and a second radio access network arranged to operate according to a second radio access technology. The method comprises the steps of receiving an access request (Si3, Si4) originating from a wireless device, said access request comprising wireless device related information including information related to a global cell identity; assessing (P4) the access request based on the received wireless device related information, a throughput related value for the first radio access technology and a throughput related value for the second radio access technology, and responding (Si5, Si6) to the access request based on the assessment.
    Type: Application
    Filed: December 20, 2013
    Publication date: November 17, 2016
    Inventors: Diana Andrei, Rasmus Axén, Elisabeth Hansson, Stefan Johansson
  • Publication number: 20160295444
    Abstract: A method in a network node for handling evaluation of a secondary cell for a wireless device. The method comprises establishing a first level of coverage of the secondary cell, based on a first measurement report received from the wireless device, which first measurement report relates to a quality of a signal of the secondary cell. The method further comprises determining an evaluation frequency, based on the established first level of coverage of the secondary cell, which evaluation frequency relates to how frequently a level of coverage of the secondary cell shall be evaluated. The method further comprises sending a configuration to the wireless device, which configuration relates to an evaluation of a second level of coverage of the secondary cell, and which configuration is based on the determined evaluation frequency.
    Type: Application
    Filed: December 12, 2013
    Publication date: October 6, 2016
    Inventors: Rasmus Axén, Stefan Johansson, Fredrik Gunnarsson
  • Publication number: 20160278160
    Abstract: A method performed by a wireless device for handling suspension of a connection between the wireless device and a wireless communications network. The wireless communications network comprises the first network node. The wireless device receives information from the first network node. The information comprises a first identifier identifying a first cell area. The first cell area comprises one or more cells capable of resuming the connection. The wireless device suspends the connection in a first cell out of the one or more cells. When selecting a cell access method for a cell the wireless device determines whether or not resumption of the connection is allowed in the cell based on the information from the network node.
    Type: Application
    Filed: October 20, 2015
    Publication date: September 22, 2016
    Inventors: Paul Schliwa-Bertling, Thomas Walldeen, Stefan Johansson, Håkan Axelsson
  • Publication number: 20160277321
    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: Application
    Filed: May 31, 2016
    Publication date: September 22, 2016
    Inventors: Stefan Johansson, Robin O'Connor
  • Publication number: 20160249264
    Abstract: The present disclosure presents a method and a network entity for load contribution distribution in a wireless communication system supporting component carrier communication. The network entity serves a first cell of a wireless communication system. The method comprises receiving (61) information on one or more secondary cell usages of the first cell, wherein a secondary cell usage represents a secondary component carrier load of a wireless device connected to a primary cell of one or more further cells which are different from the first cell. The information on primary cell usage and the one or more secondary cell usage for the first cell is compiled (62) in the network entity. The method further comprises identifying (63) the respective primary cell for each secondary cell usage. Finally it comprises sending (64) secondary cell usage information to a respective network entity serving the identified respective primary cell for each secondary cell usage.
    Type: Application
    Filed: October 18, 2013
    Publication date: August 25, 2016
    Inventors: Rasmus AXÉN, Fredrik GUNNARSSON, Stefan JOHANSSON