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).

  • Publication number: 20260314815
    Abstract: An adjustment device for a piece of furniture, in particular a table, includes a first component, a second component and a multi-layered dampening element, wherein the second component is in contact with the first component via at least parts of the dampening element, wherein the dampening element comprises at least one outer layer and at least one dampening layer, and wherein the at least one outer layer comprises an elastomer material and the at least one dampening layer comprises a dampening material being softer than the elastomer material of the outer layer.
    Type: Application
    Filed: August 18, 2022
    Publication date: October 15, 2026
    Inventors: Marisu Lazar, Ralf Keller, Jürgen Preiss
  • Patent number: 12752641
    Abstract: A motor vehicle, in particular with an electric drive, having a battery system and an underride protection plate. The underride protection plate is arranged in the motor vehicle at least in sections under the battery system. The battery system includes a battery module, which includes a first wall in a first region of the battery system and a second wall in a second region of the battery system. The underride protection plate is formed in such a way that the underride protection plate directly or indirectly abuts the battery system in the first region and in the second region at least in sections, and, between the first region and the second region, forms a first section of a gas channel between the battery system and the underride protection plate.
    Type: Grant
    Filed: February 28, 2023
    Date of Patent: October 6, 2026
    Assignee: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Ralf Keller, Gabriel Dilmac, Philipp Kellner, Christopher Volkmer, Simon Frieß, Salvatore Maltisotto, Sascha Mostofi, Frederik Roost
  • Patent number: 12750131
    Abstract: A method performed by a first network node serving a first terminal when handling a call between the first terminal and a second terminal is provided. The first network node determines that the call is associated with longer than expected delays between the first and second terminals. The network node provides a Long Delay Indication to at least one of said first and second terminals to indicate said longer than expected delays in the call.
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: September 29, 2026
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ralf Keller, Afshin Abtin, Sorin Surdila, Bo Burman
  • Patent number: 12739735
    Abstract: Systems and methods are disclosed herein for ensuring network control of simultaneous access to network slices with application awareness. In one embodiment, a method performed in a cellular communications system comprises, at a wireless communication device, sending, to a Policy and Control Function (PCF) via an Access and Mobility Management Function (AMF), application identifiers (IDs) of applications used by the wireless communication device and receiving, from the PCF via the AMF, one or more User Equipment (UE) Route Selection Policy (URSP) rules that are based on the application IDs. The method further comprises, at the PCF, obtaining information about one or more mutually exclusive network slices, generating the one or more URSP rules based on the application IDs and the information about the one or more mutually exclusive network slices, and sending the one or more URSP rules to the wireless communication device via the AMF.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: September 15, 2026
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Peter Hedman, Ralf Keller, Maria Belen Pancorbo Marcos, George Foti, Divya Peddireddy
  • Patent number: 12696129
    Abstract: A Voice Over Wifi (VoWifi) split Protocol Data Unit (PDU) Session handover is provided. In embodiments described herein, a VoWiFi session is established via a Non-3GPP N3IWF over a 5G Core, and a handover to 3GPP access through the 5G System is initiated. During handover and based on local configuration, the Packet Data Network Gateway-Control Plane (PGW-C) and Session Management Function (SMF) (PGW-C+SMF) accepts the PDU Session transfer towards the User Equipment (UE) and Next Generation Radio Access Network (NG-RAN) by means of setting up only the Quality of Service (QoS) Flow associated with a default QoS Rule. The PGW-C+SMF initiates set up of the QoS Flow for Internet Protocol (IP) Multimedia Subsystem (IMS) voice using the PDU Session Modification procedure after the NG-RAN successfully allocates resources for the transferred PDU Session and the confirmation has reached the PGW-C+SMF.
    Type: Grant
    Filed: July 2, 2021
    Date of Patent: July 28, 2026
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Juying Gan, George Foti, Ralf Keller, Chunbo Wang
  • Patent number: 12696151
    Abstract: Embodiments herein relate a method performed by radio network node for handling communication of a UE in a wireless communication network. The radio network node is configured to determine to initiate or avoid initiation of a process for handing over communication of the UE from the radio network node of a first RAN to a second RAN based on whether the communication includes an emergency service or not, and an identity associated to the second RAN and/or the first RAN based on the target PLMN ID.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: July 28, 2026
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Afshin Abtin, Christer Gustafsson, Ralf Keller, Ann-Christine Sander
  • 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