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: 20230188574
    Abstract: There is provided mechanisms for indicating IMS voice support over PS for a UE in a PLMN. A method is performed by an AMF of the PLMN. The method comprises obtaining a trigger for the AMF to indicate IMS voice support over PS for the UE in the PLMN. The method comprises obtaining information of IMS voice support over PS for the UE in the PLMN. The method comprises providing, based on the information, an indication to a radio access network serving the UE in the PLMN. The indication specifies the IMS voice support over PS for the UE in the PLMN.
    Type: Application
    Filed: March 17, 2021
    Publication date: June 15, 2023
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ralf KELLER, Ann-Christine SANDER, Afshin ABTIN, David CASTELLANOS ZAMORA
  • Publication number: 20230180116
    Abstract: Embodiments of the present disclosure provide methods and apparatus for information synchronization. A method at a data management node comprises receiving a first message including an identity of a first gateway from the first gateway. The first gateway serves a session of a terminal device. The terminal device accesses to a network from a second gateway. The method further comprises sending a second message including the identity of the first gateway to an authentication, authorization, and accounting (AAA) server. The first message further includes a first indication that the terminal device accesses to the network from the second gateway.
    Type: Application
    Filed: April 30, 2020
    Publication date: June 8, 2023
    Inventors: Chunbo WANG, Daniel NILSSON, Cheng WANG, Ralf KELLER
  • Patent number: 11647476
    Abstract: A method of managing registration of a User Equipment (UE) with an IP Multimedia Subsystem (IMS) via a Long-Term Evolution (LTE) network. The method comprises, following termination of a Voice over LTE (VoLTE) call, initiating a timer at the UE and, if no VoLTE call is initiated to or from the UE prior to expiry of the timer, then sending an IMS de-registration request from the UE to the IMS.
    Type: Grant
    Filed: May 13, 2022
    Date of Patent: May 9, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mats Stille, Ralf Keller
  • Patent number: 11641620
    Abstract: A method for operating a mobile entity in a mobile communications network having at least one slice is provided. The slice of the mobile communication to which the mobile entity intends to connect is determined. Additionally, whether a relationship can be identified in the mobile entity is determined. The relationship indicates whether the slice to which the mobile entity intends to connect is related to an access point of the slice. A request message is then transmitted to a radio access network (RAN) of the mobile communications network that includes the identified relationship.
    Type: Grant
    Filed: July 2, 2021
    Date of Patent: May 2, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Branko Djordjevic, Peter Hedman, Ralf Keller, Ann-Christine Sander
  • Publication number: 20230130699
    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: Application
    Filed: October 25, 2022
    Publication date: April 27, 2023
    Applicant: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Philipp Kellner, Benjamin Passenberg, Ralf Keller, Thomas Fritz, Immanuel Vogel, Christopher Volkmer, Sascha Mostofi
  • Publication number: 20230089553
    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: Application
    Filed: March 23, 2020
    Publication date: March 23, 2023
    Inventors: Afshin Abtin, Ralf Keller
  • Patent number: 11611913
    Abstract: A technique for preparing User Equipment, UE, mobility to a 2G/3G network for a UE moving from a 5G network, optionally via a 4G network, to the 2G/3G network is disclosed. A method implementation of the technique is performed by a network node of the 5G network and comprises triggering (S304) providing one or more 2G/3G Quality of Service, QoS, parameters to the UE required to hand over at least one QoS flow established between the UE and the 5G network to the 2G/3G network when the UE moves to the 2G/3G network.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: March 21, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ralf Keller, Afshin Abtin, Ann-Christine Sander
  • Publication number: 20230083873
    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: Application
    Filed: January 22, 2021
    Publication date: March 16, 2023
    Inventors: Ralf KELLER, Christine JOST
  • Publication number: 20230057595
    Abstract: A battery arrangement has at least two battery modules each having a battery module housing. Each battery module housing has at least two chambers separated from one another by a dividing wall, in which chambers in each case at least one cell stack is disposed. The cell stack has at least two stacked battery cells and at least one compression pad. A thermal insulation layer is provided in each case between the dividing wall and the adjacent battery cells. The distance between the dividing wall and a battery cell adjacent to the dividing wall of a predefined first cell stack is at least twice as great as the distance between two adjacent battery cells within the predefined first cell stack.
    Type: Application
    Filed: July 5, 2022
    Publication date: February 23, 2023
    Applicant: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Immanuel Vogel, Christopher Volkmer, Philipp Kellner, Sascha Mostofi, Ralf Keller
  • Publication number: 20220407164
    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: Application
    Filed: June 16, 2022
    Publication date: December 22, 2022
    Applicant: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Philipp Kellner, Teiwen Fehse, Christopher Volkmer, Ralf Keller, Markus Grupp, Daniel Fink
  • Patent number: 11532849
    Abstract: A battery module for a motor vehicle has a battery module housing (30) with an insertion opening (32) and at least one battery cell package (40) is arranged in the battery module housing (30). The battery cell package (40) has at least two battery cells (42) arranged parallel to one another and at least one compression pad (44) arranged parallel to the battery cells (42). The battery cells (42) and the at least one compression pad (44) are stacked one on top of the other in any desired order in a thickness direction (D). The battery cell package (40) is inserted in an insertion direction (E) through the insertion opening (32) into the battery module housing (30). The battery cell package (40) also has two insertion auxiliary layers (46) that respectively form outer sides (41) of the battery cell package (40) that are opposite in the thickness direction (D).
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: December 20, 2022
    Assignee: Dr. Ing. h. c. F. Porsche AG
    Inventors: Philipp Kellner, Ralf Keller, Tassilo Gilbert, Sascha Mostofi, Jens Bohlien
  • Patent number: 11523307
    Abstract: A method performed by a first NF service provider in 5GC, for enabling a specific functionality for a specific area of a communications network. The 5GC further comprises one or more second NF service provider managing the specific functionality in the 5GC and a NF service consumer requesting the specific functionality to be performed by the second NF service provider for the specific area. The method comprises obtaining, from the NF service provider, information regarding the functionality and the network area supported. The method further comprises receiving a request for the address of the second NF service provider supporting the functionality in a desired network area. The method further comprises determining the address of the NF service provider supporting the functionality for the network area indicated and sending the determined address to the NF service consumer.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: December 6, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ralf Keller, Jari Vikberg
  • Publication number: 20220377655
    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: Application
    Filed: October 2, 2020
    Publication date: November 24, 2022
    Inventors: Ralf Keller, David Castellanos Zamora, Maria Belen Pancorbo Marcos, Peter Hedman
  • Publication number: 20220369155
    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: Application
    Filed: September 30, 2020
    Publication date: November 17, 2022
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Peter HEDMAN, Ralf KELLER, Juying GAN, Paul SCHLIWA-BERTLING, Maria Belen PANCORBO MARCOS
  • Publication number: 20220360954
    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: Application
    Filed: September 21, 2020
    Publication date: November 10, 2022
    Inventors: David CASTELLANOS ZAMORA, George FOTI, Jose Miguel DOPICO SANJUAN, Ralf KELLER, Jesús Angel DE GREGORIO RODRIGUEZ
  • Publication number: 20220336916
    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: Application
    Filed: April 13, 2022
    Publication date: October 20, 2022
    Applicant: 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: 11470528
    Abstract: A technique for preparing User Equipment, UE, mobility from a 4G network to a 5G network for a UE moving from a 2G/3G network to the 5G network via the 4G network is disclosed. A method implementation of the technique is performed by a network node and comprises triggering terminating one or more Packet Data Network, PDN, connections associated with the UE when the UE moves from the 2G/3G network to the 4G network forcing the UE to reestablish connectivity with the 4G network prior to moving from the 4G network to the 5G network.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: October 11, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Ralf Keller, Afshin Abtin, Ann-Christine Sander
  • Publication number: 20220312170
    Abstract: There is provided mechanisms for providing a message service center address. The method is performed by a core network node. The method comprises providing, to a terminal device and as part of performing a registration procedure between a local serving network and the terminal device, a message service center address to terminal device address to a public safety answering point (PSAP) of the local sewing network for an advanced mobile location (AML) service.
    Type: Application
    Filed: June 6, 2019
    Publication date: September 29, 2022
    Inventors: Ralf Keller, George Foti, Jörgen Axell
  • Publication number: 20220312510
    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: Application
    Filed: November 13, 2019
    Publication date: September 29, 2022
    Inventors: Ralf Keller, Maria Belen Pancorbo Marcos
  • Patent number: 11445560
    Abstract: A method of establishing a Voice over Internet Protocol, VoI P, call between a calling User Equipment, UE, and a called UE, wherein said calling UE is served by a core network via a packet-switched radio access network, PS-RAN, and wherein a bearer is to be established between said calling U E and a gateway node in said core network, over said PS-RAN, for obtaining access to an Internet Protocol, IP, multimedia subsystem, I MS, network, wherein said method comprises the steps receiving, by a an IMS Call Session Control Function, CSCF, node a notification message thereby notifying said I MS node that said VoIP call establishment is in progress and initiating, by said I MS CSCF, re-establishment of said bearer between said calling UE and said gateway node, over said PS-RAN, in case said establishment of said bearer has failed due to a temporary failure.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: September 13, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ralf Keller, Afshin Abtin, Venkata Ramesh Balabhadruni, Jinyin Zhu