Patents by Inventor Ralf Keller

Ralf Keller 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: 12647491
    Abstract: A security relay node receives (710) a discovery request from a service consumer. The discovery request requests discovery of a network function to provide a service. The security relay node directs (720) the discovery request to a selected one of a plurality of remote security relay nodes of a target network and forwards (730), to the service consumer, a discovery response identifying the network function to provide the service.
    Type: Grant
    Filed: December 19, 2022
    Date of Patent: June 2, 2026
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Ralf Keller, Mary Amarisa Robison, David Castellanos Zamora
  • Patent number: 12641507
    Abstract: A method, performed by a first node, for handling roaming information. The first node operates in a first communications network. The first node determines a mobility procedure to be used for a device from a second communications network while roaming into the first communications network. The mobility procedure is related to at least one of: a) an Evolved Packet System (EPS) fallback procedure for a non-emergency service, and b) an Emergency Service fallback to EPS procedure. Determining the mobility procedure is based on a preference of the second communications network. The first node then initiates providing an indication of the determined mobility procedure to a second node, which receives the indication and enables usage of the indicated mobility procedure. A third node sends a first indication to the first node indicating the preference.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: May 26, 2026
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Afshin Abtin, Ralf Keller, Ann-Christine Sander
  • Patent number: 12610336
    Abstract: Redirection and retry of registration is disclosed herein. In some embodiments, a User Equipment (UE) of a Next Generation Radio Access Network (NG-RAN) is adapted to transmit a Non-Access Stratum (NAS) registration request comprising one or more Single-Network Slice Selection Assistance Information (S-NSSAI), indicated as one or more requested S-NSSAI. The UE is further adapted to receive, in an Access Stratum (AS) protocol, an AS-level registration reattempt indication to instruct the UE to reattempt the NAS registration request in a target cell. The UE is also adapted to reattempt the NAS registration in the target cell, responsive to receiving the AS-level registration reattempt indication.
    Type: Grant
    Filed: January 14, 2022
    Date of Patent: April 21, 2026
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ralf Keller, Peter Hedman, Angelo Centonza
  • Patent number: 12587955
    Abstract: A mechanism is provided to monitor and control the number of terminals (100) or number of PDU sessions for a network slice, or both. A new network function called the Network Slice Control Function (NSCF) (85) is defined that interacts with an Access and Mobility Management Function (AMF) (40) and/or Session Management Function (SMF) (45) to monitor and control a number of users for a network slice, a number of PDU sessions for a network slice, or both. The NSCF (85) determines per slice quotas for the number of users and/or number of session for network slices and interacts with the AMF (40) and/or SMF (45) to enforce the quotas.
    Type: Grant
    Filed: October 2, 2020
    Date of Patent: March 24, 2026
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Ralf Keller, David Castellanos Zamora, Maria Belen Pancorbo Marcos, Peter Hedman
  • Publication number: 20260052425
    Abstract: Methods for providing network slice bit rate information and enforcing bit rate limitations. An exemplary method provides for receiving a network slice identifier identifying a network slice and corresponding network slice bit rate information (NS-BRI) for the identified network slice. The NS-BRI comprises i) first maximum bit rate information (MBRI) specifying a first maximum bit rate for the network slice and the user equipment, and/or ii) first guaranteed bit rate information (GBRI) specifying a first aggregate guaranteed bit rate for the network slice and the user equipment.
    Type: Application
    Filed: October 28, 2025
    Publication date: February 19, 2026
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Peter HEDMAN, Ralf KELLER, Juying GAN, Paul SCHLIWA-BERTLING, Maria Belen PANCORBO MARCOS
  • Publication number: 20260040063
    Abstract: A security relay node in a Public Land Mobile Network (PLMN) delegates, to a remote security node, setup of an N32-c interface. The N32-c interface is directed towards a further PLMN and terminates at the remote security node. The security relay node relays a control packet, received from a Network Function (NF) within the PLMN, over an N32-f interface to the remote security node for delivery of the control packet. The remote security node is outside of both the PLMN and the further PLMN.
    Type: Application
    Filed: October 10, 2025
    Publication date: February 5, 2026
    Inventors: Ralf Keller, George Foti, Bengt Sahlin, Mary Amarisa Robison
  • Publication number: 20260032562
    Abstract: A technique for enabling an application to access a target network function in a visited mobile communication network is disclosed, wherein the target network function provides a service with respect to one or more wireless devices associated with the application that have roamed from a home mobile communication network to the visited mobile communication network. A method implementation of the technique is performed by a network function of the home mobile communication network and includes obtaining accessibility information on how the target network function can be accessed in the visited mobile communication network, and providing, based on the accessibility information, access information to the application enabling the application to access the target network function.
    Type: Application
    Filed: August 1, 2022
    Publication date: January 29, 2026
    Inventors: Massimo CONDOLUCI, Thorsten LOHMAR, Tomas NYLANDER, Ralf KELLER
  • Patent number: 12513560
    Abstract: The present disclosure provides methods for providing network slice bit rate information and enforcing bit rate limitations. An exemplary method provides for receiving a network slice identifier identifying a network slice and corresponding network slice bit rate information (NS-BRI) for the identified network slice. The NS-BRI comprises i) first maximum bit rate information (MBRI) specifying a first maximum bit rate for the network slice and the user equipment, and/or ii) first guaranteed bit rate information (GBRI) specifying a first aggregate guaranteed bit rate for the network slice and the user equipment.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: December 30, 2025
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Peter Hedman, Ralf Keller, Juying Gan, Paul Schliwa-Bertling, Maria Belen Pancorbo Marcos
  • Patent number: 12482875
    Abstract: A motor vehicle traction battery arrangement includes two cooling plates respectively disposed in a horizontal plane and a high-voltage battery module. The lower and upper horizontal walls of which are cooled directly by the cooling plates and which encases a plurality of identical rectangular battery cells in a rigid battery module housing. The battery cells are all configured such that they are plate-like and elongated, are parallel to one another in vertical planes (y,z) and each includes two small-area vertical end walls, two large-area vertical side walls and two medium-area horizontal walls. On its end face, each battery cell includes an anodic connecting element and a cathodic connecting element. At least two similar cell stacks including a same plurality of battery cells are provided, and are stacked such that their battery cell side walls adjoin one another. The battery cell horizontal walls directly adjoin a cooled battery module horizontal wall.
    Type: Grant
    Filed: October 25, 2022
    Date of Patent: November 25, 2025
    Assignee: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Philipp Kellner, Benjamin Passenberg, Ralf Keller, Thomas Fritz, Immanuel Vogel, Christopher Volkmer, Sascha Mostofi
  • Patent number: 12470915
    Abstract: A method, implemented by a security relay node in a Public Land Mobile Network, PLMN, wherein the method comprising the steps of receiving, from a Network Function, NF, within the PLMN, a control packet to be provided to a further PLMN, relaying said control packet to a remote security node for delivery of the control packet to the further PLMN, wherein the remote security node being outside of both the PLMN and being outside the further PLMN.
    Type: Grant
    Filed: July 20, 2022
    Date of Patent: November 11, 2025
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Ralf Keller, George Foti, Bengt Sahlin, Mary Amarisa Robison
  • Patent number: 12368761
    Abstract: A method performed by a first IP multimedia system, IMS, node (15), for handling a network function in a communication network. The first IMS node (15) requests a first core network node (13) for at least a part of contact information of a network function instance, and receives a response from the first core network node (13) with at least the part of the contact information for the network function instance. The first IMS node (15) communicates with a second IMS node (16) or a core network node over a service based interface, based on the received part of the contact information for the network function instance.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: July 22, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ralf Keller, Afshin Abtin, Anders Ryde, Mattias Dahlqvist
  • Publication number: 20250219855
    Abstract: This disclosure presents a method for provisioning a User Equipment (UE) policy to a UE in the Extended Protocol Configuration Options (ePCO). The method involves provisioning the UE policy to a user terminal via an ePCO, where the UE policy is included in a UE policy container. The UE policy is transmitted from a first network node to the user terminal, where it is received and included in the UE policy container and the ePCO. The method also involves transmitting the UE policy from the first network node to a second network node, where it is included in a UE policy container and the ePCO, before being transmitted to the user terminal.
    Type: Application
    Filed: March 29, 2023
    Publication date: July 3, 2025
    Inventors: Antonio INIESTA GONZALEZ, Juying GAN, Maria Belen PANCORBO MARCOS, Ralf KELLER, Shabnam SULTANA, Jan BACKMAN
  • Publication number: 20250211967
    Abstract: Embodiments include methods for a network data analytics function (NWDAF) of a communication network. Such methods include receiving, from a data consumer network function (NF) of the communication network, a request for an analytic or data associated with a user equipment (UE). Such methods include, in response to determining a need to collect the analytic or data from a first communication network, obtaining information identifying a gateway exposure function (cGEF) of the communication network, from a network repository function (NRF) of the communication network. Such methods include, based on the obtained information, sending to the cGEF a request for the analytic or data associated with the UE and receiving the requested analytic or data from the cGEF. Other embodiments include complementary methods for a cGEF, an NRF, a producer GEF (pGEF), and a network function (NF), as well as network nodes or functions that implement such functionality.
    Type: Application
    Filed: March 13, 2023
    Publication date: June 26, 2025
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Zhang FU, Miguel Angel GARCIA MARTIN, Ralf KELLER, Antonio INIESTA GONZALEZ, Ann-Christine SANDER, Ulf MATTSSON, Maria Belen PANCORBO MARCOS
  • Patent number: 12336049
    Abstract: Embodiments herein relate to e.g. a method performed by a user equipment, UE, for handling a service in a wireless communication network. The UE perform, upon handling an emergency service, a connection to a second cell of a second RAT for handling the emergency service, and performs the emergency service in the second cell of the second RAT. The UE then stays connected in the second cell of the second RAT for a time interval relating to initiation of the emergency service or finalization of the emergency service.
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: June 17, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Afshin Abtin, Ralf Keller
  • Patent number: 12327879
    Abstract: A battery device has at least one battery module including a battery module housing, in which battery module housing battery cells are provided. The battery cells each have a cell envelope with a cell vent. The battery module housing has a battery-module housing wall with battery-module housing vents. The battery-module housing vents are respectively assigned a first closure arrangement, which first closure arrangement closes the assigned battery-module housing vent in a first state (Z1) and opens it in a second state (Z2), in order to allow at least partial venting of gas from the battery module housing through the assigned battery-module housing vent in the second state (Z2) of the first closure arrangement. At least two of the cell vents respectively lie opposite an assigned battery-module housing vent, at least in certain regions.
    Type: Grant
    Filed: April 13, 2022
    Date of Patent: June 10, 2025
    Assignee: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Philipp Kellner, Dieter Schiebel, Immanuel Vogel, Sascha Mostofi, Christopher Volkmer, Ralf Keller, Adrian Starczewski, Maximilian Müller
  • Patent number: 12315950
    Abstract: A battery arrangement for an electric vehicle including a battery housing and a plurality of battery cells. The battery cells are arranged in the battery housing. A protective plate is arranged on a side of the battery and faces toward a roadway. A deformation detection device includes at least one deformation sensor arranged at the protective plate. The protective plate is constructed of multiple layers and includes at least one first layer and one second layer separate from the first layer. The deformation detection device includes a first deformation sensor and a second deformation sensor. The first deformation sensor is arranged at the first layer of the multi-layer protective plate and the second deformation sensor is arranged at the second layer of the multi-layer protective plate.
    Type: Grant
    Filed: June 16, 2022
    Date of Patent: May 27, 2025
    Assignee: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Philipp Kellner, Teiwen Fehse, Christopher Volkmer, Ralf Keller, Markus Grupp, Daniel Fink
  • Publication number: 20250113216
    Abstract: Systems and methods are disclosed for dynamic retrieval of Network Slice Admission Control (NSAC) information in a Visited Public Land Mobile Network (VPLMN) of a User Equipment (UE). In one embodiment, a method performed by a network node in a VPLMN of a UE comprises receiving, from the UE, a request comprising information indicating a particular network slice that is subject to NSAC. The method further comprises obtaining subscription data that comprises information that indicates whether VPLMN or Home Public Land Mobile Network (HPLMN) control should be applied for NSAC and sending an update request to a Network Slice Admission Control Function (NSACF) in the VPLMN of the UE, wherein the update request comprises the information that indicates whether VPLMN or HPLMN control should be applied for NSAC.
    Type: Application
    Filed: January 13, 2023
    Publication date: April 3, 2025
    Inventors: George Foti, Peter Hedman, Ralf Keller
  • Patent number: 12256361
    Abstract: A process of operating a first network node in a first communication network can include establishing a control plane interface between the first network node and a second network node in a second communication network. The process can further include communicating first control plane data via the control plane interface. The first control plane data can be associated with operation of a user equipment, UE, in a first communication system of the first communication network. The process can further include determining that the UE has moved to a second communication system of the first communication network. The process can further include maintaining the control plane interface between the first network node and the second network node in the second communication network. The process can further include communicating second control plane data via the control plane interface.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: March 18, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ralf Keller, Christine Jost
  • Publication number: 20250088566
    Abstract: A security relay node receives (710) a discovery request from a service consumer. The discovery request requests discovery of a network function to provide a service. The security relay node directs (720) the discovery request to a selected one of a plurality of remote security relay nodes of a target network and forwards (730), to the service consumer, a discovery response identifying the network function to provide the service.
    Type: Application
    Filed: December 19, 2022
    Publication date: March 13, 2025
    Inventors: Ralf Keller, Mary Amarisa Robison, David Castellanos Zamora
  • Patent number: 12232188
    Abstract: There is provided mechanisms for establishing a communication session with a local serving network. A method is performed by a terminal device. The method comprises obtaining an indication of traffic to be communicated. The traffic is associated with a traffic descriptor. The method comprises selecting a URSP rule for the traffic to be communicated in a communication session with the local serving network. The URSP rule is selected in accordance with the traffic descriptor and in accordance with a validity condition for the communication session. The validity condition at least pertains to network support for IMS in the local serving network. The method comprises establishing a communication session with the local serving network for communicating the traffic according to the selected URSP rule.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: February 18, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Ralf Keller, Maria Belen Pancorbo Marcos