Patents by Inventor Karl Norrman

Karl Norrman 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).

  • Methods, network nodes, mobile entity, computer programs and computer program products for protecting privacy of a mobile entity
    Patent number: 10931644
    Abstract: A method for a first network node may protect confidentiality of a first identifier associated by the first network node with a subscription used by a mobile entity. The communications network comprises a home network of the mobile entity and a serving network serving the mobile entity. The first network node, which is part of the home network may: receive, from a second network node which is part of the serving network, a first request for authentication information for the mobile entity, the first request comprising the first identifier; generate a first pseudonym associated with the first identifier; create a link between the first pseudonym and the first identifier; and send, to the second network node, the first pseudonym in response to the first request for authentication information for use as an identifier for the mobile entity in the serving network. A method for a second network node is also provided.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: February 23, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Karl Norrman, Yi Cheng, John Mattsson, Mats Näslund
  • First Network Node, Second Network Node, Wireless Device and Methods Therein for Handling Broadcast Information
    Publication number: 20210050925
    Abstract: A method for handling broadcast information is described. A first network node (111) operating in a wireless communications network (100) determines (403) one or more decryption keys (K1, K2, K3) to be provided to a wireless device (131) in the wireless communications network (100). The decryption keys enable the wireless device (131) to decrypt information to be broadcasted by a second network node (112) in the wireless communications network (100). The information comprises a plurality of subsets of positioning information. Each of the subsets is to be, or is, encrypted with a different encryption key based on a respective type of subscription for wireless devices (131, 132, 133) in the wireless communications network (100). The determined decryption keys are based on at least one type of subscription of the wireless device (131). The first network node (111) then initiates (404) providing the determined to the wireless device (131).
    Type: Application
    Filed: April 30, 2018
    Publication date: February 18, 2021
    Inventors: Sara Modarres Razavi, Åke Busin, Fredrik Gunnarsson, Karl Norrman, Henrik Rydén
  • Security Negotiation in Service Based Architectures (SBA)
    Publication number: 20210014284
    Abstract: The disclosure provides techniques for negotiating security mechanisms between security gateways (102A, 102B). In these techniques, an initiating security gateway (102A) sends (302) a request message to a responding security gateway (102B) over a first connection established between the security gateways. The first connection provides integrity protection for 5 the messages. The request message includes one or more security mechanisms supported by the initiating security gateway. Upon receipt, the responding security gateway selects (406) one of the security mechanisms and transmits (408) a response message to the initiating security gateway indicating the selected security mechanism. Signaling messages are then communicated (310, 412) between the security gateways using the selected security 10 mechanism.
    Type: Application
    Filed: February 15, 2019
    Publication date: January 14, 2021
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Vesa LEHTOVIRTA, Pablo MARTINEZ DE LA CRUZ, Karl NORRMAN, Pasi SAARINEN, Vesa TORVINEN
  • RADIO ACCESS NODES AND TERMINAL DEVICES IN A COMMUNICATION NETWORK
    Publication number: 20200404493
    Abstract: According to an exemplary embodiment, there is provided a method of operating a terminal device. The method includes operating the terminal device in a connected state with respect to the communication network. The method further includes receiving a first signal from a first radio access node in the communication network indicating that the connected state is to be suspended, the first signal having information for use in determining a first key for encrypting data to be sent between the terminal device and the first radio access node or another radio access node in the communication network if the connected state is resumed.
    Type: Application
    Filed: September 2, 2020
    Publication date: December 24, 2020
    Inventors: Oscar OHLSSON, Karl NORRMAN, Paul SCHLIWA-BERTLING, Magnus STATTIN
  • Security Context In A Wireless Communication System
    Publication number: 20200396650
    Abstract: Core network equipment (16) is configured for use in a core network of a wireless communication system. The core network equipment (16) is configured to switch switching to using a new non-access stratum, NAS, security context between a user equipment (14) and the core network equipment (16). The core network equipment (16) is also configured to, during or in association with a handover procedure for handover of the user equipment (14), signal from the core network equipment (16) that the new NAS security context between the user equipment (14) and the core network equipment (16) is to be used as a basis for an access stratum (AS) security context between the user equipment (14) and radio access network equipment (12).
    Type: Application
    Filed: September 14, 2018
    Publication date: December 17, 2020
    Inventors: Prajwol Kumar Nakarmi, Karl Norrman, Monica Wifvesson
  • Method of generating a pseudonym associated with a communication device, a network node, computer program and computer program product
    Patent number: 10855441
    Abstract: A method (40) of generating a pseudonym associated with a communication device (11) is disclosed. The method (40) is performed in a network node (13) of a communications system (10) and comprises generating (41) a pseudonym embryo based on one or more elements of a sequence (S1, S2, . . . , Sn), obtaining (42) the pseudonym as output of a masking operation applied to the pseudonym embryo, wherein the masking operation comprises a one-to-one mapping, and transmitting (43) the pseudonym to the communication device (11). A corresponding network node (13), computer program and computer program product are also disclosed.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: December 1, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Karl Norrman, Jari Arrko, Elena Dubrova, Mats Näslund
  • Methods and network nodes for multi-connectivity handling in a communication system
    Patent number: 10849044
    Abstract: A method of multi-connectivity handling in a communication system is disclosed. The method may be performed in a first network node and comprises: generating a data protocol packet destined to a communication device, and including in the data protocol packet at least one identifier identifying data protocol processing context and the first network node. Methods in a second network node and in a communication device are also disclosed, as are first and second network nodes, communication device, computer programs and computer program products.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: November 24, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Karl Norrman, Rui Fan, Johan Rune, Gunnar Mildh, Rasmus Axén, Qingyu Miao
  • Radio access nodes and terminal devices in a communication network
    Patent number: 10805795
    Abstract: According to an exemplary embodiment, there is provided a method of operating a terminal device. The method includes operating the terminal device in a connected state with respect to the communication network. The method further includes receiving a first signal from a first radio access node in the communication network indicating that the connected state is to be suspended, the first signal including information for use in determining a first key for encrypting data to be sent between the terminal device and one of the first radio access node and another radio access node in the communication network if the connected state is resumed.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: October 13, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Oscar Ohlsson, Karl Norrman, Paul Schliwa-Bertling, Magnus Stattin
  • INTEGRITY PROTECTION
    Publication number: 20200322160
    Abstract: A message authentication code, for a message transmitted and received over a communications network, is formed by applying inputs to an integrity algorithm acting on the message. The inputs comprise: an integrity key; a value indicating a transfer direction; and a frame-dependent integrity input, wherein the frame-dependent integrity input is a frame-dependent modulo count value that also depends on a random value and on a frame-specific sequence number.
    Type: Application
    Filed: November 24, 2016
    Publication date: October 8, 2020
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Vesa TORVINEN, Noamen BEN HENDA, Qian CHEN, Vesa LEHTOVIRTA, Mats NÄSLUND, Karl NORRMAN, Gang REN, Mikael WASS, Monica WIFVESSON
  • PROTECTING WLCP MESSAGE EXCHANGE BETWEEN TWAG AND UE
    Publication number: 20200296583
    Abstract: A method of protecting WLAN Control Protocol (WLCP) message exchange between a Trusted WLAN Access Gateway (TWAG)(112) of a Trusted WLAN Access Network (TWAN)(110) and a User Equipment (UE)(101) are provided. The method comprises deriving, by an Authentication, Authorization, and Accounting, (AAA) Server(103) of an Evolved Packet Core (EPC) network which is interfaced with the TWAN, and by the UE, a Master Session Key (MSK) and an Extended MSK (EMSK), sending, from the AAA Server to a Trusted WLAN AAA Proxy (TWAP)(113) of the TWAN and an Access Point (AP)(111) of the TWAN, the MSK or a key derived from at least the MSK, and deriving, by the TWAN or by the AAA Server, and by the UE, from the MSK, the EMSK, or the key derived from at least the MSK or the EMSK, a key for protecting the WLCP message exchange.—Corresponding devices, computer programs, and computer program products are further provided.
    Type: Application
    Filed: May 28, 2020
    Publication date: September 17, 2020
    Inventors: Dinand ROELAND, Vesa LEHTOVIRTA, Karl NORRMAN, Stefan ROMMER
  • Identifiers in a Wireless Communication System
    Publication number: 20200245139
    Abstract: A method performed by a resolver in a core network of a wireless communication system, where the method comprise: receiving, from a requester in the core network, a request to resolve a provided identifier that is one of a subscription identifier and a pseudonym identifier serving in the core network as a pseudonym for the subscription identifier; and transmitting, to the requester as a response to the request, a resolved identifier that is the other of the subscription identifier and the pseudonym identifier.
    Type: Application
    Filed: October 4, 2018
    Publication date: July 30, 2020
    Inventors: Prajwol Kumar Nakarmi, Mats Näslund, Karl Norrman
  • Methods and network nodes for managing wireless device associated information in a wireless communication network
    Patent number: 10721619
    Abstract: It is provided a core network node, e.g. MME, and a first network node, e.g. a OAM congestion reporting function node, for managing wireless device associated information, in particular for or as part of congestion handling. The nodes are comprised in a wireless communication network, such as a telecommunications network. The core network node obtains the wireless device associated information, encrypts it into an encrypted representation, and sends data comprising the encrypted representation to an OAM system via a RAN. The first network node receives, from the OAM system, the encrypted representation of the wireless device associated information, and decrypts it using one or more decryption keys accessible by the first network node.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: July 21, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: György Miklós, Karl Norrman, Paul Schliwa-Bertling
  • Protecting WLCP message exchange between TWAG and UE
    Patent number: 10716000
    Abstract: A method of protecting WLAN Control Protocol (WLCP) message exchange between a Trusted WLAN Access Gateway (TWAG) (112) of a Trusted WLAN Access Network (TWAN) (110) and a User Equipment (UE) (101) are provided. The method comprises deriving, by an Authentication, Authorization, and Accounting, (AAA) Server (103) of an Evolved Packet Core (EPC) network which is interfaced with the TWAN, and by the UE, a Master Session Key (MSK) and an Extended MSK (EMSK), sending, from the AAA Server to a Trusted WLAN AAA Proxy (TWAP) (113) of the TWAN and an Access Point (AP) (111) of the TWAN, the MSK or a key derived from at least the MSK, and deriving, by the TWAN or by the AAA Server, and by the UE, from the MSK, the EMSK, or the key derived from at least the MSK or the EMSK, a key for protecting the WLCP message exchange. —Corresponding devices, computer programs, and computer program products are further provided.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: July 14, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Dinand Roeland, Vesa Lehtovirta, Karl Norrman, Stefan Rommer
  • Method and apparatus for security key generation for dual connectivity
    Patent number: 10708772
    Abstract: Techniques for the secure generation of a set of encryption keys to be used for communication between a wireless terminal and an assisting base station in a dual-connectivity scenario. An example method includes generating an assisting security key for the assisting base station, based on an anchor base station key. The generated assisting security key is sent to the assisting base station, for use by the assisting base station in encrypting data traffic sent to the wireless terminal or in generating one or more additional assisting security keys for encrypting data traffic sent to the wireless terminal while the wireless terminal is dually connected to the anchor base station and the assisting base station. The anchor base station key, or a key derived from the anchor base station key, is used for encrypting data sent to the wireless terminal by the anchor base station.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: July 7, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Stefan Wager, Niklas Johansson, Karl Norrman, Oumer Teyeb, Vesa Virkki
  • SYSTEMS AND METHODS FOR THE HANDLING OF DATA RADIO BEARER INTEGRITY PROTECTION FAILURE IN NR
    Publication number: 20200169887
    Abstract: According to certain embodiments, a method by a wireless device includes detecting an integrity check failure associated with a Packet Data Convergence Protocol (PDCP) data Protocol Data Unit (PDU). In response to detecting the integrity check failure, the PDCP data PDU is discarded and an indication is sent to a network node. The indication informs the network node of the integrity check failure.
    Type: Application
    Filed: June 12, 2018
    Publication date: May 28, 2020
    Inventors: Stefan WAGER, Oumer TEYEB, Karl NORRMAN
  • Method and Network Node for Paging in a Wireless Communication System
    Publication number: 20200162900
    Abstract: A wireless device (16) configured to receive from a network node (20) a page (18) that includes a paging identifier (18A) 4 for the wireless device (16). The paging identifier (18A) may identify as a target of the page (18) a wireless device (16) associated with a particular subscriber. In fact, in some embodiments, the paging identifier (18A) is based on an encrypted subscription identifier for rI the wireless device (16) or is a pseudonym subscription identifier for the wireless device (16). In any event, the wireless device (16) is also configured to transmit to the network node (20) a response (22) to the page (18) that indicates the wireless device (16) was paged but that includes an identifier for the wireless device (16) that is different than the paging identifier (18A) included in the page (18).
    Type: Application
    Filed: December 29, 2017
    Publication date: May 21, 2020
    Inventors: Prajwol Kumar Nakarmi, Enrique Cobo Jimenez, Mats Näslund, Karl Norrman
  • Communication between a communication device and a network device
    Patent number: 10659447
    Abstract: A communication device of a communication network receives, via a network, a challenge, generates a first Diffie Hellman, DH, parameter, a first verification code for the first DH parameter, forwards the challenge or a derivative thereof to an identity module, receives at least one result parameter as response from the identity module, determines, based on the result parameter, whether the first DH parameter is authentic, and if the first DH parameter is authentic, generates and sends a second DH parameter to the network device for session key generation based on the first DH parameter and the second DH parameter.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: May 19, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Mats Näslund, Bengt Sahlin, Karl Norrman, Jari Arkko
  • Wireless local area network (WLAN) node, a wireless device, and methods therein
    Patent number: 10659370
    Abstract: A wireless local area network, WLAN, node (400) is adapted to be comprised in an integrated wireless communications network comprising a WLAN and a cellular communications network. The WLAN node (400) comprises a receiving module (401) adapted to receive traffic data from a wireless device. A differentiation module (403) is adapted to determine whether the received traffic data relates to a first traffic type which is to be routed locally within the WLAN or a second traffic type which is to be routed to the cellular communication network. A processing module (405) is adapted to control the handling of the traffic data according to whether the traffic data is determined as relating to the first traffic type or the second traffic type.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: May 19, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Filip Mestanov, Karl Norrman, Oumer Teyeb
  • Network architecture, methods, and devices for a wireless communications network
    Patent number: 10638253
    Abstract: Methods and apparatus in a fifth-generation wireless communications, including an example method, in a wireless device, that includes receiving a downlink signal comprising an uplink access configuration index, using the uplink access configuration index to identify an uplink access configuration from among a predetermined plurality of uplink access configurations, and transmitting to the wireless communications network according to the identified uplink access configuration. The example method further includes, in the same wireless device, receiving, in a first subframe, a first Orthogonal Frequency-Division Multiplexing (OFDM) transmission formatted according to a first numerology and receiving, in a second subframe, a second OFDM transmission formatted according to a second numerology, the second numerology differing from the first numerology. Variants of this method, corresponding apparatuses, and corresponding network-side methods and apparatuses are also disclosed.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: April 28, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Stefan Parkvall, Janne Peisa, Gunnar Mildh, Robert Baldemair, Stefan Wager, Jonas Kronander, Karl Werner, Richard Abrahamsson, Ismet Aktas, Peter Alriksson, Junaid Ansari, Shehzad Ali Ashraf, Henrik Asplund, Fredrik Athley, Håkan Axelsson, Joakim Axmon, Johan Axnäs, Kumar Balachandran, Gunnar Bark, Jan-Erik Berg, Andreas Bergström, Håkan Björkegren, Nadia Brahmi, Cagatay Capar, Anders Carlsson, Andreas Cedergren, Mikael Coldrey, Icaro L. J. da Silva, Erik Dahlman, Ali El Essaili, Ulrika Engström, Mårten Ericson, Erik Eriksson, Mikael Fallgren, Rui Fan, Gabor Fodor, Pål Frenger, Jonas Fridén, Jonas Fröberg Olsson, Anders Furuskär, Johan Furuskog, Virgile Garcia, Ather Gattami, Fredrik Gunnarsson, Ulf Gustavsson, Bo Hagerman, Fredrik Harrysson, Ning He, Martin Hessler, Kimmo Hiltunen, Songnam Hong, Dennis Hui, Jörg Huschke, Tim Irnich, Sven Jacobsson, Niklas Jaldén, Simon Järmyr, Zhiyuan Jiang, Martin Johansson, Niklas Johansson, Du Ho Kang, Eleftherios Karipidis, Patrik Karlsson, Ali S. Khayrallah, Caner Kilinc, Göran N. Klang, Sara Landström, Christina Larsson, Gen Li, Lars Lindbom, Robert Lindgren, Bengt Lindoff, Fredrik Lindqvist, Jinhua Liu, Thorsten Lohmar, Qianxi Lu, Lars Manholm, Ivana Maric, Jonas Medbo, Qingyu Miao, Reza Moosavi, Walter Müller, Elena Myhre, Karl Norrman, Bengt-Erik Olsson, Torgny Palenius, Sven Petersson, Jose Luis Pradas, Mikael Prytz, Olav Queseth, Pradeepa Ramachandra, Edgar Ramos, Andres Reial, Thomas Rimhagen, Emil Ringh, Patrik Rugeland, Johan Rune, Joachim Sachs, Henrik Sahlin, Vidit Saxena, Nima Seifi, Yngve Selén, Eliane Semaan, Sachin Sharma, Cong Shi, Johan Sköld, Magnus Stattin, Anders Stjernman, Dennis Sundman, Lars Sundström, Miurel Isabel Tercero Vargas, Claes Tidestav, Sibel Tombaz, Johan Torsner, Hugo Tullberg, Jari Vikberg, Peter Von Wrycza, Thomas Walldeen, Pontus Wallentin, Hai Wang, Ke Wang Helmersson, Jianfeng Wang, Yi-Pin Eric Wang, Niclas Wiberg, Emma Wittenmark, Osman Nuri Can Yilmaz, Ali Zaidi, Zhan Zhang, Zhang Zhang, Yanli Zheng
  • Network architecture, methods, and devices for a wireless communications network
    Patent number: 10630410
    Abstract: Methods and apparatus in a fifth-generation wireless communications, including an example method, in a wireless device, that includes receiving a downlink signal comprising an uplink access configuration index, using the uplink access configuration index to identify an uplink access configuration from among a predetermined plurality of uplink access configurations, and transmitting to the wireless communications network according to the identified uplink access configuration. The example method further includes, in the same wireless device, receiving, in a first subframe, a first Orthogonal Frequency-Division Multiplexing (OFDM) transmission formatted according to a first numerology and receiving, in a second subframe, a second OFDM transmission formatted according to a second numerology, the second numerology differing from the first numerology. Variants of this method, corresponding apparatuses, and corresponding network-side methods and apparatuses are also disclosed.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: April 21, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Stefan Parkvall, Janne Peisa, Gunnar Mildh, Robert Baldemair, Stefan Wager, Jonas Kronander, Karl Werner, Richard Abrahamsson, Ismet Aktas, Peter Alriksson, Junaid Ansari, Shehzad Ali Ashraf, Henrik Asplund, Fredrik Athley, Håkan Axelsson, Joakim Axmon, Johan Axnäs, Kumar Balachandran, Gunnar Bark, Jan-Erik Berg, Andreas Bergström, Håkan Björkegren, Nadia Brahmi, Cagatay Capar, Anders Carlsson, Andreas Cedergren, Mikael Coldrey, Icaro L. J. da Silva, Erik Dahlman, Ali El Essaili, Ulrika Engström, Mårten Ericson, Erik Eriksson, Mikael Fallgren, Rui Fan, Gabor Fodor, Pål Frenger, Jonas Fridén, Jonas Fröberg Olsson, Anders Furuskär, Johan Furuskog, Virgile Garcia, Ather Gattami, Fredrik Gunnarsson, Ulf Gustavsson, Bo Hagerman, Fredrik Harrysson, Ning He, Martin Hessler, Kimmo Hiltunen, Songnam Hong, Dennis Hui, Jörg Huschke, Tim Irnich, Sven Jacobsson, Niklas Jaldén, Simon Järmyr, Zhiyuan Jiang, Martin Johansson, Niklas Johansson, Du Ho Kang, Eleftherios Karipidis, Patrik Karlsson, Ali S. Khayrallah, Caner Kilinc, Göran N. Klang, Sara Landström, Christina Larsson, Gen Li, Lars Lindbom, Robert Lindgren, Bengt Lindoff, Fredrik Lindqvist, Jinhua Liu, Thorsten Lohmar, Qianxi Lu, Lars Manholm, Ivana Maric, Jonas Medbo, Qingyu Miao, Reza Moosavi, Walter Müller, Elena Myhre, Karl Norrman, Bengt-Erik Olsson, Torgny Palenius, Sven Petersson, Jose Luis Pradas, Mikael Prytz, Olav Queseth, Pradeepa Ramachandra, Edgar Ramos, Andres Reial, Thomas Rimhagen, Emil Ringh, Patrik Rugeland, Johan Rune, Joachim Sachs, Henrik Sahlin, Vidit Saxena, Nima Seifi, Yngve Selén, Eliane Semaan, Sachin Sharma, Cong Shi, Johan Sköld, Magnus Stattin, Anders Stjernman, Dennis Sundman, Lars Sundström, Miurel Isabel Tercero Vargas, Claes Tidestav, Sibel Tombaz, Johan Torsner, Hugo Tullberg, Jari Vikberg, Peter Von Wrycza, Thomas Walldeen, Pontus Wallentin, Hai Wang, Ke Wang Helmersson, Jianfeng Wang, Yi-Pin Eric Wang, Niclas Wiberg, Emma Wittenmark, Osman Nuri Can Yilmaz, Ali Zaidi, Zhan Zhang, Zhang Zhang, Yanli Zheng