Patents by Inventor Stefan Rommer

Stefan Rommer 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: 12213102
    Abstract: Embodiments herein relate generally to a Control plane, CP, node, a method performed by the CP node, a Radio Access Network, RAN, node and a method performed by the RAN node. More particularly the embodiments herein relate to handling paging.
    Type: Grant
    Filed: June 26, 2023
    Date of Patent: January 28, 2025
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Qian Chen, Stefan Rommer, Paul Schliwa-Bertling
  • Patent number: 12213210
    Abstract: An Access and Mobility Management Function (AMF) adapted for taking part in handover from a 5G system (5GS) to an Evolved Packet System (EPS).
    Type: Grant
    Filed: November 13, 2023
    Date of Patent: January 28, 2025
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Stefan Rommer, Jan Backman, Qian Chen, Göran Hall, Åsa Larsen
  • Patent number: 12206819
    Abstract: Methods and apparatuses are disclosed for implementing mobile terminating call. According to an embodiment, a subscriber management node obtains, from a mobility management node, an indication that indicates whether a packet switching (PS) connection is currently active for a terminal device. The subscriber management node receives, from a server, a first query about whether a PS access domain is to be used for a terminating call to the terminal device. The subscriber management node sends a response to the server based on the obtained indication.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: January 21, 2025
    Assignee: Telefonaktiebolagget LM Ericsson (Publ)
    Inventors: Lei Xia, Zhiwei Qu, Ralf Keller, Peter Hedman, Stefan Rommer
  • Publication number: 20240414599
    Abstract: A method (500) performed by a first network function. The method includes receiving a handover related message related to a handover of UE from a source RAN node to a target RAN node. The method also includes after receiving the handover related message, transmitting to a second network function a request message for establishing a forwarding tunnel. The method also includes receiving a response message transmitted by the second network function, wherein the response message is responsive to the request message for establishing a forwarding tunnel, and further wherein the response message comprises an address that the second network function will use as a source address when forwarding packets for the UE via the established forwarding tunnel to the target RAN node.
    Type: Application
    Filed: October 7, 2022
    Publication date: December 12, 2024
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Qian CHEN, Stefan ROMMER, Angelo CENTONZA, Yunjie LU, Shabnam SULTANA, Yong YANG
  • Patent number: 12167497
    Abstract: Disclosed herein is a method performed by an AMF entity in a Visited Public Land Mobile Network, VPLMN, entity serving a roaming UE, the method comprises: obtaining, by the AMF entity, a subscribed UE-AMBR for the UE; sending, by the AMF entity, an Access Management, AM, Policy request message towards a Visited Policy Control Function, V-PCF, entity in the VPLMN to establish or update an AM Policy for the roaming UE; receiving by the AMF entity in response to sending the AM Policy request message, an AM Policy response message sent by the V-PCF entity and comprising Access and mobility related policy information that includes a serving network UE-AMBR for the UE decided by the V-PCF entity; and deploying the serving network UE-AMBR instead of the subscribed UE-AMBR by sending the policy control information including the determined UE-AMBR to a RAN node in the serving network.
    Type: Grant
    Filed: May 6, 2020
    Date of Patent: December 10, 2024
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Lasse Olsson, Stefan Rommer, Qian Chen
  • Patent number: 12127150
    Abstract: A method performed by a UE having multiple USIMs is provided. The method includes registering the UE in a first PLMN. The method includes moving the UE into a CM-connected state in the first PLMN. The method includes setting up a PDU session in the first PLMN. The method includes using a DNS, via the PDU session in the first PLMN, to select a N3IWF in a second PLMN. The method includes accessing the N3IWF via IP connectivity provided by the first PLMN and initiating a registration procedure with an AMF node in the second PLMN using the N3IWF, the UE indicating that the AMF node shall only use N3IFW for NAS notifications after registration. The method includes completing the registration procedure to register with the second PLMN. The method includes setting up a PDU session with a SMF node in the second PLMN without user plane resources.
    Type: Grant
    Filed: October 6, 2020
    Date of Patent: October 22, 2024
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Qian Chen, Christofer Lindheimer, Stefan Rommer, Paul Schliwa-Bertling, Magnus Stattin, Alessio Terzani
  • Patent number: 12075305
    Abstract: System comprising a mobility management entity, MME, a first Radio Access node, RAN (eNB) offering Long Term Evolution, LTE, access, and a second radio access node, RAN (gNB) offering New Radio, NR, access; a user entity, UE, supporting both Long Term Evolution, LTE, and New Radio, NR, Radio Access Technology, RAT.
    Type: Grant
    Filed: February 22, 2023
    Date of Patent: August 27, 2024
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Qian Chen, Juying Gan, Stefan Rommer, Ann-Christine Sander, Paul Schliwa-Bertling
  • Publication number: 20240236670
    Abstract: A method of providing multiple sets of legacy credentials to be applied to one subscription in a 5th generation (5G) system, where a subscriber initiates via legacy wireline access to the 5G system, multiple communications sessions each requiring respective different credential. The method comprises receiving, at a gateway function of the 5G system, subscriber legacy wireline access via a gateway node of the subscriber, registering the subscriber and identifying the subscriber subscription based on line identification (ID).
    Type: Application
    Filed: February 19, 2022
    Publication date: July 11, 2024
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: David Ian ALLAN, Stefan ROMMER
  • Publication number: 20240224166
    Abstract: Methods and functions for handling a UE that is in an idle state with respect to at least one access type e.g., 3GPP access or non-3GPP access.
    Type: Application
    Filed: January 9, 2024
    Publication date: July 4, 2024
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Stefan ROMMER, Qian CHEN, Daniel NILSSON, Paul SCHLIWA-BERTLING
  • Patent number: 11997091
    Abstract: A method performed by a PGW for handling a UEs access to an EPC service via a non-3GPP access network. During a request for connecting the UE to the non-3GPP access network, the PGW receives identity information which indicates an identity of an AAA node from a non-3GPP access gateway. The PGW selects the AAA node which was indicated in the received identity information. The PGW transmits, to the selected AAA node, a request message for the UE. The request message is a request for authorization of the UE to access the EPC service via the non-3GPP access network.
    Type: Grant
    Filed: March 2, 2022
    Date of Patent: May 28, 2024
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Chunbo Wang, Daniel Nilsson, Stefan Rommer
  • Publication number: 20240172094
    Abstract: A method performed by a user equipment, UE, and a UE is provided. The method includes obtaining tracking area codes, TACs, broadcast in a cell of a network. The method includes responsive to none of the broadcast TACs being a last previously selected TAC in the UE, selecting, by a non-access stratum, NAS, layer or an access stratum, AS, layer of the UE, one TAC of the broadcast TACs to be a current TAC of the UE.
    Type: Application
    Filed: March 29, 2022
    Publication date: May 23, 2024
    Inventors: Helka-Liina MÄÄTTÄNEN, Johan RUNE, Mikael WASS, Emre YAVUZ, Stefan ROMMER, Paul SCHLIWA-BERTLING
  • Patent number: 11991603
    Abstract: Methods and apparatuses are disclosed for facilitating roaming of terminal device. According to an embodiment, a session management node operable in a home network receives, from another session management node operable in a visiting network, a quality of service (QoS) policy per a roaming agreement between the visiting network and the home network during establishment of a protocol data unit (PDU) session for a terminal device. The session management node retrieves, from a subscriber management node, subscribed QoS parameters of the terminal device. The session management node obtains a result that is generated based on the QoS policy per the roaming agreement and the subscribed QoS parameters of the terminal device.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: May 21, 2024
    Assignee: Telefonaktiebolagget LM Ericsson (Publ)
    Inventors: Juying Gan, Qian Chen, Stefan Rommer
  • Publication number: 20240155453
    Abstract: An Access and Mobility Management Function (AMF) adapted for taking part in handover from a 5G system (5GS) to an Evolved Packet System (EPS).
    Type: Application
    Filed: November 13, 2023
    Publication date: May 9, 2024
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Stefan ROMMER, Jan BACKMAN, Qian CHEN, Göran HALL, Åsa LARSEN
  • Publication number: 20240129312
    Abstract: Embodiments of the present disclosure provide method and apparatus for authentication. A method performed by a session management and gateway entity comprises receiving a create session request comprising an identity of a terminal device from a mobile management entity. The method further comprises determining to use a second authentication method rather than a first authentication method. The second authentication method has a higher security than the first authentication method. The method further comprises triggering a procedure of the second authentication method related to an authentication authorization and accounting (AAA) server.
    Type: Application
    Filed: February 23, 2022
    Publication date: April 18, 2024
    Inventors: Wen Zhang, Tianmei Liang, Juying Gan, Gang Ren, Stefan Rommer
  • Publication number: 20240056446
    Abstract: The present disclosure provides methods, entities, and computer readable media for non-3GPP access authentication. The method (1600) at a protocol translation entity includes: receiving (S1601), from a Non-3GPP access point, an authentication request message of a first protocol type for a UE that includes an identity of the UE; translating (S1603) the authentication request message of the first protocol type to a corresponding authentication request message of a second protocol type; and transmitting (S1605), to an entity for authentication, the corresponding authentication request message of a second protocol type that includes the identity of the UE.
    Type: Application
    Filed: December 14, 2021
    Publication date: February 15, 2024
    Inventors: David CASTELLANOS ZAMORA, Daniel Nilsson, Stefan Rommer, Cheng Wang, Chunbo Wang
  • Patent number: 11889405
    Abstract: A method performed by an Access and mobility Management Function (AMF). The method includes receiving from a Session Management Function (SMF) a request to establish User Plane (UP) for a user equipment's (UE's) protocol data unit (PDU) session. The request includes information indicating an access type. The method also includes, in response to the request, performing the steps of: determining that the UE is in the idle state with respect to both a 3GPP access and a non-3GPP access and, as a result of determining that the UE is in the idle state with respect to both a 3GPP access and a non-3GPP access, the AMF initiates paging of the UE by the 3GPP access, the paging initiation comprising transmitting to a Radio Access Network, RAN, node a page request to page the UE.
    Type: Grant
    Filed: December 8, 2021
    Date of Patent: January 30, 2024
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Stefan Rommer, Qian Chen, Daniel Nilsson, Paul Schliwa-Bertling
  • Publication number: 20240031986
    Abstract: Embodiments herein relate generally to a Control plane, CP, node, a method performed by the CP node, a Radio Access Network, RAN, node and a method performed by the RAN node. More particularly the embodiments herein relate to handling paging.
    Type: Application
    Filed: June 26, 2023
    Publication date: January 25, 2024
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Qian CHEN, Stefan ROMMER, Paul SCHLIWA_BERTLING
  • Patent number: 11871332
    Abstract: A method performed by a network node (160) includes serving a cell area by a first physical network node for a first time duration. The first physical network node uses an identifier of a logical network node. For a second time duration, the cell area is served by a second physical network node. The second physical network node uses the identifier of the logical network node. The first physical network node serves the cell area with a first frequency band and the second physical network node serves the cell area with a second frequency band.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: January 9, 2024
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Helka-Liina Määttänen, Henrik Rydén, Xingqin Lin, Yi-Pin Eric Wang, Gino Luca Masini, Stefan Rommer, Björn Hofström, Jonas Sedin
  • Publication number: 20230421641
    Abstract: Methods are provided to operate an SMF node. A request to create a session for a wireless device is received. A communication establishment request is transmitted to an NEF node responsive to receiving the request to create the session for the wireless device, wherein the communication establishment request includes UPF node information for a tunnel between a UPF node and the NEF node to be used for the session for the wireless device. A communication establishment response is received from the NEF node, wherein the communication establishment response includes NEF node information for the tunnel between the UPF node and the NEF node to be used for the session for the wireless device. A tunnel information update is transmitted to the UPF node after receiving the communication establishment response, wherein the tunnel information update includes the NEF node information for the tunnel between the UPF node and the NEF node.
    Type: Application
    Filed: June 15, 2023
    Publication date: December 28, 2023
    Inventors: Hans Bertil Rönneke, Qian Chen, Stefan Rommer
  • Patent number: 11849364
    Abstract: An Access and Mobility Management Function (AMF) adapted for taking part in handover from a 5G system (5GS) to an Evolved Packet System (EPS).
    Type: Grant
    Filed: August 24, 2022
    Date of Patent: December 19, 2023
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Stefan Rommer, Jan Backman, Qian Chen, Göran Hall, Åsa Larsen