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: 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
  • 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
  • Patent number: 12199301
    Abstract: A drive battery for a vehicle, in particular a motor vehicle, includes a housing, which has a plurality of partial regions, wherein one or more cell modules are respectively arranged in a first partial region and in a second partial region. A composite component is arranged between the first partial region and the second partial region in order to separate the partial regions. The composite component has a profile element of fiber-reinforced plastic, a foam body of a compressible foam and/or a silicone mat.
    Type: Grant
    Filed: November 9, 2021
    Date of Patent: January 14, 2025
    Assignee: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Maximilian Müller, Ralf Keller
  • Publication number: 20250016602
    Abstract: Systems and methods are disclosed for supporting traffic management capabilities under network control. In one embodiment, a method performed by a wireless communication device comprises receiving one or more User Equipment (UE) Route Selection Policy (URSP) rules from a network node, receiving traffic control information associated to the one or more URSP rules, and performing one or more actions based on the one or more URSP rules and the traffic control information. In this manner, the network is given control of slice traffic management such that the network can force the UE to perform an action(s) when the network thinks that such action(s) is beneficial.
    Type: Application
    Filed: November 10, 2022
    Publication date: January 9, 2025
    Inventors: George Foti, Ralf Keller, Peter Hedman, Maria Belen Pancorbo Marcos
  • Patent number: 12192860
    Abstract: Apparatuses and methods for short message service (SMS) delivery are disclosed. In one embodiment, a method implemented in a unified data management, UDM, node includes setting a short message service, SMS, function, SMSF, registration notification flag to detect an SMSF registration event associated with a user equipment, UE. In another embodiment, a method implemented in a home subscriber server, HSS, node includes sending a request to subscribe to a notification at a unified data management, UDM, node about a short message service, SMS, function, SMSF, registration event associated with a user equipment, UE.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: January 7, 2025
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: David Castellanos Zamora, George Foti, Jose Miguel Dopico Sanjuan, Ralf Keller, Jesús Angel De Gregorio Rodriguez
  • Patent number: 12150095
    Abstract: Systems and methods for dynamic Radio Access Technology (RAT)/Frequency Selection Priority (RFSP) selection for a User Equipment (UE) are disclosed. In some embodiments, a method of operation of a core network entity in a core network of a cellular communications system comprises selecting a RFSP index for a UE during setup of a packet data session for the UE where the RFSP index is an index to a specific Radio Resource Management (RRM) configuration for the UE and sending a message comprising the selected RFSP index to another core network entity. In some other embodiments, a method of operation of a core network entity comprises detecting an application that is using a packet data session of a UE, selecting a RFSP index for the UE based on the detected application, and sending a message comprising the RFSP index to another core network entity.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: November 19, 2024
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: George Foti, Angel Navas Cornejo, Ralf Keller
  • Patent number: 12143528
    Abstract: A node of a wireless communication network (150; 160; 170; 210; 220; 230; 240) receives an indication from a user equipment (10). The indication indicates that a limitation of volume charged packet data services is required for the user equipment (10). Depending on the received indication, the node (150; 160; 170; 210; 220; 230; 240) prevents transmission of packet data associated with the volume charged packet data services and allows transmission of packet data associated with one or more other packet data services.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: November 12, 2024
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Ralf Keller, Fredrik Lindholm, Ivo Sedlacek
  • Publication number: 20240334184
    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: Application
    Filed: July 20, 2022
    Publication date: October 3, 2024
    Inventors: Ralf Keller, George Foti, Bengt Sahlin, Mary Amarisa Robison
  • Publication number: 20240323708
    Abstract: Embodiments of a method for handling a quota(s) for a network slice that supports interworking between first and second cellular communications systems are disclosed. In one embodiment, the method comprises, at a first Network Function (NF), receiving a message associated to: registration or attachment of a User Equipment (UE) with the first cellular communications system for a particular network slice that supports interworking, registration or attachment of the UE with the second cellular communications system for the particular network slice, establishment of a session in the first cellular communications system for the particular network slice, or establishment of a session in the second cellular communications system for the particular network slice. The method further comprises, at the first NF, determining that a quota check is needed and performing a procedure to check the quota for the particular network slice and, if needed, update an associated count.
    Type: Application
    Filed: September 17, 2021
    Publication date: September 26, 2024
    Inventors: George Foti, Peter Hedman, Ralf Keller
  • Publication number: 20240236151
    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: Application
    Filed: March 31, 2021
    Publication date: July 11, 2024
    Inventors: Ralf Keller, Afshin Abtin, Anders Ryde, Mattias Dahlqvist
  • Patent number: 12022023
    Abstract: According to techniques disclosed herein, a Visited Communication Network (VCN) (10) selectively reports usage information back to a Home Communication Network (HCN) (50) for user traffic that is offloaded at the VCN (10) to a Data Network (DN) (14) rather than routed back to the HCN (50). Among the various advantages, the reporting supports charging operations in the HCN (50) regarding the offloaded traffic. Further advantages include the application of policy control and service-authorization control jointly between the VCN (10) and the HCN (50).
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: June 25, 2024
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Ralf Keller, Maria Belen Pancorbo Marcos, Robert Törnkvist
  • Patent number: 11985556
    Abstract: A method performed by a first base station associated with a preferred access network includes initiating a first handover of a wireless device to a second base station associated with a non-preferred access network in response to fulfillment of a condition. Information indicating that the wireless device is subject to a forced access change is transmitted to a second base station associated with the non-preferred access network. The information also indicates that a second handover of the wireless device should be initiated to hand the wireless device back to the first base station or another base station associated with the preferred access network as soon as the condition is no longer fulfilled.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: May 14, 2024
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Christer Gustafsson, Ralf Keller
  • Publication number: 20240137392
    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: Application
    Filed: March 30, 2021
    Publication date: April 25, 2024
    Inventors: Ralf Keller, Afshin Abtin, Anders Ryde, Mattias Dahlqvist
  • Publication number: 20240129029
    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: Application
    Filed: February 26, 2021
    Publication date: April 18, 2024
    Inventors: Ralf Keller, Afshin Abtin, Sorin Surdila, Bo Burman
  • Patent number: 11943678
    Abstract: Systems and methods are disclosed herein for performing a controlled handover of a wireless device from an incoming access network to a cellular access network of a visited cellular network. In some embodiments, a method for handover of a wireless device from an incoming access network to a cellular access network of a visited cellular network while in roaming comprises, at the wireless device, sending a message to a core network of the visited cellular network. The message is related to a handover of the wireless device from the incoming access network to the cellular access network of the visited cellular network and comprises an incoming access indication. The incoming access indication is an indication of the incoming access network. The method further comprises, at the core network node, receiving the message and making a decision for the handover based on the incoming access indication.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: March 26, 2024
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: George Foti, Ralf Keller
  • Publication number: 20240080787
    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: Application
    Filed: January 14, 2022
    Publication date: March 7, 2024
    Inventors: Ralf Keller, Peter Hedman, Angelo Centonza
  • Publication number: 20240080651
    Abstract: Providing Roaming Value Added Service (RVAS) network function for Home Public Land Mobile Network (HPLMN) is disclosed herein. In some embodiments, a Home Network Repository Function (H-NRF) in an HPLMN of a telecommunications network obtains information about a Home Control Network Function (NF) and a Roaming Control NF. A Visited NF in a Visited Public Land Mobile Network (VPLMN) sends a discovery request to the H-NRF in the HPLMN. The H-NRF receives the discovery request from the Visited NF in the VPLMN, and determines that, for the discovery request and the VPLMN, RVAS is applicable. The H-NRF selects the Roaming Control NF and the Home Control NF for the discovery request, and transmits, to the Visited NF, a response to the discovery request, the response comprising an address of the selected Roaming Control NF instead of an address of the selected Home Control NF.
    Type: Application
    Filed: January 24, 2022
    Publication date: March 7, 2024
    Inventors: Ralf Keller, George Foti