Patents by Inventor Thomas Johansson

Thomas 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: 20160095053
    Abstract: A Mobile Station (MS), a Base Station System (BSS) and a Mobile Switching Centre (MSC) of a cellular network, such as GSM, are disclosed. According to one embodiment, the MS is arranged to carry out one or more security features in its communication with the network. For example, the MS may be arranged to: by means of information received in a signalling message (0) from the network, discover if the network supports one or more of said security features, exchange information with the network in order to enable the use of one or more of the above-mentioned supported security features in the communication, carry out at least one of the one or more of the supported security features in the communication with the network.
    Type: Application
    Filed: December 10, 2015
    Publication date: March 31, 2016
    Inventors: Thomas Johansson, Håkan Englund, Mats Näslund
  • Patent number: 9301214
    Abstract: In a method in a central node of a cellular radio network the central node is adapted to deciding if a mobile station connected to the cellular radio network via a first radio access technology controlled by the central node is to be moved to another radio access technology when a circuit switched call of the mobile station is ended. It is assumed that the cellular radio network is adapted to use a fallback to circuit switched procedure. First it is decided that a CS call for a particular mobile station has ended. Then in it is checked if the CS call was the result of a fallback to CS procedure. The central node then decides if the mobile station is to be moved to another radio access technology based at least partly on the, i.e. if the CS call was a result of a CS fallback procedure.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: March 29, 2016
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Pär Gustavsson, Thomas Johansson, Magnus Olsson, Paul Schliwa-Bertling
  • Patent number: 9226140
    Abstract: A Mobile Station (MS), a Base Station System (BSS) and a Mobile Switching Center (MSC) of a cellular network, such as GSM, are disclosed. According to one embodiment, the MS is arranged to carry out one or more security features in its communication with the network. For example, the MS may be arranged to: • by means of information received in a signalling message (0) from the network, discover if the network supports one or more of said security features, • exchange information with the network in order to enable the use of one or more of the above-mentioned supported security features in the communication, • carry out at least one of the one or more of the supported security features in the communication with the network.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: December 29, 2015
    Assignee: Unwired Planet, LLC
    Inventors: Thomas Johansson, Håkan Englund, Mats Näslund
  • Publication number: 20150290788
    Abstract: A percussion device for a hydraulic rock drilling machine (1) including, inside a cylinder (4), a to and fro moveable impact piston (3), which is provided with a land portion (12) for cooperation with a braking recess (11) in the cylinder (4) for the establishment of a braking chamber in advanced positions of the impact piston, wherein a throttle slit (17) is arranged to be established between the land portion (12) and the braking recess (11). A pressure channel (14), being connected to a pressure medium source, is arranged to debouch in the cylinder (4) between the piston guiding device (6) and a position of the land portion (12) in a most advanced position of the impact piston (3). The invention also concerns a method and a hydraulic rock drilling machine.
    Type: Application
    Filed: October 30, 2013
    Publication date: October 15, 2015
    Applicant: Atlas Copco Rock Drills AB
    Inventor: Thomas Johansson
  • Publication number: 20150273677
    Abstract: A device in a hydraulic rock drilling machine (1) including a distribution valve (7,7?, 7?) arranged in connection with the rock drilling machine for controlling hydraulic flows to different parts of the rock drilling machine, wherein the distribution valve includes a valve body (8, 8?, 8?), which is arranged movable to and fro in axial directions inside a valve chamber (33) and wherein the valve chamber is limited in axial direction by two valve end walls (10,11; 10?,11; 10?,11?). One of the valve end walls is movable in an axial direction against an abutment (12,12?) in such a way that it defines an end position for the valve body, and a pressing device (13,13?,13?) is arranged for pressing said at least one of the valve end walls against said abutment. The invention also relates to a rock drilling machine.
    Type: Application
    Filed: November 22, 2013
    Publication date: October 1, 2015
    Applicant: Atlas Copco Rock Drills AB
    Inventors: Erik Jakobsson, Thomas Johansson
  • Publication number: 20150264605
    Abstract: In a method in a central node of a cellular radio network the central node is adapted to deciding if a mobile station connected to the cellular radio network via a first radio access technology controlled by the central node is to be moved to another radio access technology when a circuit switched call of the mobile station is ended. It is assumed that the cellular radio network is adapted to use a fallback to circuit switched procedure. First it is decided that a CS call for a particular mobile station has ended. Then in it is checked if the CS call was the result of a fallback to CS procedure. The central node then decides if the mobile station is to be moved to another radio access technology based at least partly on the, i.e. if the CS call was a result of a CS fallback procedure.
    Type: Application
    Filed: March 26, 2015
    Publication date: September 17, 2015
    Inventors: Pär Gustavsson, Thomas Johansson, Magnus Olsson, Paul Schliwa-Bertling
  • Patent number: 9125110
    Abstract: In a method in a central node of a cellular radio network the central node is adapted to deciding if a mobile station connected to the cellular radio network via a first radio access technology controlled by the central node is to be moved to another radio access technology when a circuit switched call of the mobile station is ended. It is assumed that the cellular radio network is adapted to use a fallback to circuit switched procedure. First it is decided that a CS call for a particular mobile station has ended. Then in it is checked if the CS call was the result of a fallback to CS procedure. The central node then decides if the mobile station is to be moved to another radio access technology based at least partly on the, i.e. if the CS call was a result of a CS fallback procedure.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: September 1, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Pär Gustavsson, Thomas Johansson, Magnus Olsson, Paul Schliwa-Bertling
  • Patent number: 9065809
    Abstract: The present invention relates to a method and node for efficiently distributing electronic content in a content distribution network (CDN) comprising a plurality of cache nodes. Embodiments of the present invention include a virtual node logically representing a set of cache nodes. The set of cache nodes is in turn defined based on an internal communication cost between the cache nodes. In each of the cache nodes represented by the virtual node statistics regarding content requests is collected, and based on this statistics it is determined whether specific content is to be cached in the virtual node or not. If it is determined to cache specific content in the virtual node, the specific content may be caused to be cached in one or more of the cache nodes represented by the virtual node.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: June 23, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Lars-Örjan Kling, Kjell Nyström, Thomas Johansson, Stefan Hellkvist, Hareesh Puthalath
  • Patent number: 8880073
    Abstract: A method and various devices (e.g., MME, GANCs, UE) are described herein for preventing a CS domain call from being dropped during a CSoLTEvGAN towards GERAN/UTRAN handover procedure.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: November 4, 2014
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Jari Vikberg, Göran Rune, Häkan Axelsson, Magnus Hallenstål, Thomas Johansson, Tomas Nylander
  • Publication number: 20140278597
    Abstract: A system for managing corporate travel provides a search module in which a traveler may search travel options and receive travel approval in line with the travel policies of an organization. The traveler completes the booking outside the system, by any means, through any supplier or reseller. The completed booking is then reconciled within the system with credit card transaction information and/or expense report information with a reconciliation module.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: John Wilkinson, Masood Fakharzadeh, Thomas Johansson, Sushma Bhope
  • Patent number: 8837399
    Abstract: System information transmitted from a wireless network is enhanced to contain additional information that indicates the relative priority between neighboring cells or frequencies in multiple Radio-Access Technologies, such as GERAN, UTRAN and E-UTRAN. In an example method implemented in a mobile station, a system information message of a first type transmitted by a base station is read. The mobile station determine whether one or more RAT priority bits are present in the system information message, wherein the presence or absence of the one or more RAT priority bits indicates whether additional ones of a plurality of available system information messages of the first type must be read before inter-RAT cell reselection may begin. If RAT priority bits are present, the mobile station selectively initiates inter-RAT cell reselection based on the one or more RAT priority bits.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: September 16, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Thomas Johansson, John Walter Diachina, Henry Freberg, Claes-Göran Persson
  • Patent number: 8811166
    Abstract: The present invention relates to methods and arrangements of handling inter-working between different radio access technologies in a telecommunication system comprising communication network nodes (10; 15) communicating with a plurality of user equipments (18) on uplink (17) and downlink (16) channels. Radio access technology priority settings depending on in which operation mode said user equipment (18) is in, sent by the communication network node (10; 15), are received in the user equipment (18).
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: August 19, 2014
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jens Bergqvist, Thomas Johansson, Paul Schliwa-Bertling
  • Patent number: 8665757
    Abstract: Embodiments of the present invention a method and a node for finding the shortest path to a cache node in a content delivery network (CDN) comprising requested content and a method for creating a virtual representation of a network. According to an embodiment of the present invention, the virtual representation is in the form of a virtual, hierarchical topology, and the cache nodes correspond to the cache nodes of the real network. All cache nodes are arranged at a first level and with the virtual nodes arranged at higher levels. In the virtual representation, all nodes (cache and virtual) are connected with virtual links such that there exist only one path between any two arbitrary cache nodes. Further, costs to the virtual links are assigned such that the path cost between any two arbitrary cache nodes in the virtual representation generally corresponds to the lowest path cost between corresponding cache nodes in the real network.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: March 4, 2014
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Lars-Örjan Kling, Kjell Nyström, Thomas Johansson, Stefan Hellkvist, Hareesh Puthalath
  • Patent number: 8655374
    Abstract: A system, method, and User Equipment, UE, for providing a current LTE cell location to a Generic Radio Access Network Controller, GANG, based on different triggers depending on the UE state. The GANC ensures that the correct GANG is serving the UE, and also maps the LTE cell location to an associated GAN Cell Global Identifier, GAN-CGI. The GANG provides the GAN-CGI to a Mobile Switching Center, MSC, or other serving core network node to support location-based services and other mobile originated or mobile terminated calls and transactions.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: February 18, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Jari Vikberg, Thomas Johansson, Magnus Hallenstal, Tomas Nylander, Goran Rune, Hakan Axelsson
  • Publication number: 20130295937
    Abstract: A method in a user equipment for handling cell selection is provided. While in dedicated mode the user equipment receives from a radio network node a measurement information message which indicates at least two frequencies associated with a respective cell in a respective radio access technology. While it is in dedicated mode, the user equipment performs measurements on the frequencies to obtain a respective measurement value for each one of them, and receives a selection indicator message comprising a respective priority for each one of the frequencies. The user equipment obtains a respective threshold value for each of the frequencies and successively evaluates the frequencies in descending priority order until a frequency is determined for which the measurement value exceeds its respective threshold value. When entering idle mode, the user equipment selects cell based on the evaluation.
    Type: Application
    Filed: July 10, 2013
    Publication date: November 7, 2013
    Inventors: Thomas Johansson, Håkan Palm, Paul Schliwa-Bertling
  • Patent number: 8543114
    Abstract: A method and system wherein a Voice over LTE via Generic Access (VoLGA) Access Network Controller (VANC)1 upon receiving a REGISTER and REGISTER UPDATE message from the UE1 notifies a Hand Over Selection Function node (HOSF) that a user equipment (UE) is registered in the VANC. This will only be done if the HOSF has not theretofore been notified.
    Type: Grant
    Filed: September 13, 2009
    Date of Patent: September 24, 2013
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Magnus Hallenstål, Göran Rune, Jari Vikberg, Häkan Axelsson, Thomas Johansson, Tomas Nylander
  • Patent number: 8509797
    Abstract: A method in a user equipment for handling cell selection is provided. While in dedicated mode the user equipment receives from a radio network node a measurement information message which indicates at least two frequencies associated with a respective cell in a respective radio access technology. While it is in dedicated mode, the user equipment performs measurements on the frequencies to obtain a respective measurement value for each one of them, and receives a selection indicator message comprising a respective priority for each one of the frequencies. The user equipment obtains a respective threshold value for each of the frequencies and successively evaluates the frequencies in descending priority order until a frequency is determined for which the measurement value exceeds its respective threshold value. When entering idle mode, the user equipment selects cell based on the evaluation.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: August 13, 2013
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Thomas Johansson, Håkan Palm, Paul Schliwa-Bertling
  • Publication number: 20130053035
    Abstract: System information transmitted from a wireless network is enhanced to contain additional information that indicates the relative priority between neighboring cells or frequencies in multiple Radio-Access Technologies, such as GERAN, UTRAN and E-UTRAN. In an example method implemented in a mobile station, a system information message of a first type transmitted by a base station is read. The mobile station determine whether one or more RAT priority bits are present in the system information message, wherein the presence or absence of the one or more RAT priority bits indicates whether additional ones of a plurality of available system information messages of the first type must be read before inter-RAT cell reselection may begin. If RAT priority bits are present, the mobile station selectively initiates inter-RAT cell reselection based on the one or more RAT priority bits.
    Type: Application
    Filed: November 23, 2011
    Publication date: February 28, 2013
    Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventors: Thomas Johansson, John Walter Diachina, Henry Freberg, Claes-Göran Persson
  • Publication number: 20120270539
    Abstract: In a method in a central node of a cellular radio network the central node is adapted to deciding if a mobile station connected to the cellular radio network via a first radio access technology controlled by the central node is to be moved to another radio access technology when a circuit switched call of the mobile station is ended. It is assumed that the cellular radio network is adapted to use a fallback to circuit switched procedure. First it is decided that a CS call for a particular mobile station has ended. Then in it is checked if the CS call was the result of a fallback to CS procedure. The central node then decides if the mobile station is to be moved to another radio access technology based at least partly on the, i.e. if the CS call was a result of a CS fallback procedure.
    Type: Application
    Filed: January 31, 2012
    Publication date: October 25, 2012
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Pär Gustavsson, Thomas Johansson, Magnus Olsson, Paul Schliwa-Bertling
  • Patent number: RE45445
    Abstract: Illegitimate use of IP addresses is counteracted. A network (1) includes a switch (5) with ports (P1,P2,P3) to subscribers (6,6A) and a port (PN) to a core network (2) with DHCP servers (4, 4a,4b). The switch includes a database (MAC1, MAC2), port numbers (P1, P2)) and VLAN identities (VLAN1, VLAN2) for the subscribers (6, 6A) and the filter has a list over trusted DHCP servers. Initially onlY DHCP messages from the subscribers are allowed. When the subscriber (6) requests (M1, M3) for an IP address it is checked that it is a DHCP message with valid subscriber values (MAC1, P1, VLAN1). A respond (M2, M4) with an allocated IP address (IP1) and lease time interval (T1) is checked to come from a trusted DHCP server. If so, a list in the filter (9) with correct information is dynamically generated (MAC1, P1, VLAN1, IP1, T1). A message (M5) from the subscriber (6) with false IP address is discarded by the filter. Attempts by the subscriber to use false IP address are counted and a warning signal is generated.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: March 31, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Peter Anders Nesz, Thomas Johansson, Michael Valentin Juhl