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: 11399315
    Abstract: A method of managing an Evolved Packet System (EPS) fallback procedure in a 5GS network. The method comprises making available to the Access Mobility Function (AMF), a configuration parameter per Public Land Mobile Network (PLMN) indicating if early or late PCRF/PCF interaction with the IMS is used. Then, upon receipt by the network of a 5GS network registration request from a UE, the home PLMN of the UE is identified as is the configuration parameter for that PLMN. The identified parameter is then used to determine for the UE whether or not EPS fallback is available to the UE, and an indication of the determination is sent to the UE.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: July 26, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Magnus Hallenstål, Ralf Keller
  • Publication number: 20220232432
    Abstract: In an example aspect, a method performed by wireless device for communication establishment is provided. The method comprises, in response to a request for establishment of a communication with the wireless device using a first network, receiving a redirection instruction to redirect to a second network, and in response to whether a node in the second network supports communication with a node in the first network, selecting a first procedure or a second procedure for establishing the communication using the second network.
    Type: Application
    Filed: March 21, 2022
    Publication date: July 21, 2022
    Inventors: Ralf Keller, Christer Gustafsson, Åsa Larsen
  • Publication number: 20220201553
    Abstract: Embodiments herein relates to a method performed by a network node for handling a communication session or one or more flows of the communication session in a wireless communication network. The network node transmits an indication to a radio network node at a session establishment of the communication session or of at least one flow of the communication session, wherein the indication indicates a category of the communication session or the at least one flow.
    Type: Application
    Filed: March 29, 2019
    Publication date: June 23, 2022
    Inventors: Ralf Keller, Christer Gustafsson, Afshin Abtin
  • Publication number: 20220201639
    Abstract: A UE that provides to the core network information indicating the particular IMS type (e.g. 5G IMS) that should serve the UE. For example, in one embodiment there is provided a method performed by a UE for registering with an IMS. The method includes the UE, prior to initiating an IMS registration procedure, transmitting a request message comprising IMS information indicating a particular IMS type (e.g. 5G IMS) that should serve the UE.
    Type: Application
    Filed: April 2, 2019
    Publication date: June 23, 2022
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Afshin ABTIN, Ralf KELLER, Mattias DAHLQVIST
  • Patent number: 11368933
    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: December 22, 2017
    Date of Patent: June 21, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mats Stille, Ralf Keller
  • Publication number: 20220182886
    Abstract: A method performed by a core network node for handling a data service session in a packet communication network is provided. The packet communication network is configured to support fixed access between a User Equipment (UE) and an access network node. The core network node obtains a decision whether a monitored bandwidth over the fixed access is below a bandwidth requirement authorized to the UE. The bandwidth over the fixed access is monitored for a data service session between the UE and the Data Network via the fixed access. The core network node obtains a decision of how to handle the data service session based on the decision whether the monitored bandwidth over the fixed access is below the bandwidth requirement.
    Type: Application
    Filed: February 28, 2022
    Publication date: June 9, 2022
    Inventors: Panagiotis Saltsidis, Ralf Keller, Angel Navas Cornejo
  • Publication number: 20220166878
    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: Application
    Filed: April 8, 2019
    Publication date: May 26, 2022
    Inventors: Lei XIA, Zhiwei QU, Ralf KELLER, Peter HEDMAN, Stefan ROMMER
  • Patent number: 11337139
    Abstract: Method and apparatus relating to determining the services exempted from being blocked when accessing a communication system based on the one or more access network of different technology type supported by a wireless device are provided. The method is performed at the wireless device that supports more than one access network technology type (3GPP, non-3GPP) and comprises obtaining on a per access network technology type, one or more list of services exempted from being blocked when accessing the system using a particular access network type and providing to the communication system over each access network used by the wireless device, information indicating an activity status related to exempting services from being blocked in accordance with the technology type of each of the supported access network.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: May 17, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: George Foti, Ralf Keller
  • Publication number: 20220144066
    Abstract: A motor vehicle includes a traction battery module which has a hermetically sealed module housing in which at least one cell stack pair including a left-hand-side and a right-hand-side cell stack including, in each case, at least two battery cells is accommodated. The traction battery module is arranged in the vehicle floor and extends symmetrically in relation to the vehicle center (M) in the vehicle transverse direction (X). The traction battery module has a bottom wall in a horizontal plane. A gas space is formed in the module housing in the vehicle center (M) and between the left-hand-side cell stack and the right-hand-side cell stack with respect to the vehicle transverse direction (X). The module bottom wall has a degassing element centrally in the vehicle in the region of the gas space.
    Type: Application
    Filed: November 9, 2021
    Publication date: May 12, 2022
    Applicant: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Philipp Kellner, Sascha Mostofi, Christopher Volkmer, Immanuel Vogel, Adrian Starczewski, Dieter Schiebel, Ralf Keller, Maximilian Müller
  • Publication number: 20220149475
    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: Application
    Filed: November 9, 2021
    Publication date: May 12, 2022
    Applicant: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Maximilian Müller, Ralf Keller
  • Patent number: 11323478
    Abstract: A communication device comprises a container environment with a plurality of containers each having one or more applications and each being connectable to a network slice, and a container manager configured to control communication between the applications and the network slices, wherein the container manager prohibits communication between a first application in a first container and a second application in a second container.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: May 3, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Branko Djordjevic, Ralf Keller
  • Patent number: 11323922
    Abstract: When a user equipment is roaming in a visited network, mid-call handover from VoWiFi to VoLTE is controlled by policies enforced in the user equipment and the home network. An inter-operator policy and a subscription policy are stored in the home network and a user equipment policy is stored in the user equipment. The roaming user equipment registers in a visited network. Later, when mid-call handover to VoLTE on the visited network is desired, and also permitted by its user equipment policy, the user equipment sends a request containing a call-specific identifier which the responsible network entity in the home network compares with the registered handover parameter having regard to the inter-operator and subscription policies. If compliance with the policies is found, then the mid-call handover is proceeded with.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: May 3, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Jerker Zetterlund, Afshin Abtin, Andreas Anulf, Jan Dahl, Magnus Hallenstål, Ralf Keller, Håkan Österlund
  • Publication number: 20220124869
    Abstract: Systems and methods are disclosed for service request triggered fallback for an emergency service in a cellular communications system. Embodiments of a method performed by a wireless device for redirecting from a first wireless communication system to a second wireless communication system after having performed a service request in the first wireless communication system for an emergency call are also disclosed. In some embodiments, the method comprises transmitting a connection request message to a base station in the second wireless communication system as part of a connection establishment procedure whereby the wireless device establishes a connection to the second wireless communication system, the connection request message comprising an indication that a cause of connection establishment is an emergency. In this manner, the base station can provide emergency treatment for the connection request. Corresponding embodiments of a wireless device are also disclosed.
    Type: Application
    Filed: January 9, 2020
    Publication date: April 21, 2022
    Inventors: Ralf Keller, Afshin Abtin, Christer Gustafsson, Peter Ramle
  • Patent number: 11304098
    Abstract: A method performed by a core network node for handling a data service session in a packet communication network is provided. The packet communication network is configured to support fixed access between a User Equipment (UE) and an access network node. The core network node obtains a decision whether a monitored bandwidth over the fixed access is below a bandwidth requirement authorized to the UE. The bandwidth over the fixed access is monitored for a data service session between the UE and the Data Network via the fixed access. The core network node obtains a decision of how to handle the data service session based on the decision whether the monitored bandwidth over the fixed access is below the bandwidth requirement.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: April 12, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Panagiotis Saltsidis, Ralf Keller, Angel Navas Cornejo
  • Publication number: 20220095182
    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: Application
    Filed: October 10, 2019
    Publication date: March 24, 2022
    Inventors: Christer Gustafsson, Ralf Keller
  • Patent number: 11284315
    Abstract: In an example aspect, a method performed by wireless device for communication establishment is provided. The method comprises, in response to a request for establishment of a communication with the wireless device using a first network, receiving a redirection instruction to redirect to a second network, and in response to whether a node in the second network supports communication with a node in the first network, selecting a first procedure or a second procedure for establishing the communication using the second network.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: March 22, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ralf Keller, Christer Gustafsson, Åsa Larsen
  • Patent number: 11277775
    Abstract: A Network Function service provider in a 5GC, for managing SRVCC handover for a UE having a voice session anchored in an IMS in a PS domain in the 5GC is provided. The SRVCC handover moves the voice session to a CS domain in a legacy network. The NF service provider receives an SRVCC handover required message from an NF service consumer, comprising information about a target ID of the legacy network and a target transparent RAN container. The NF service provider obtains, based on the information received in the handover required message, a legacy target transparent RAN container comprising information required for the target RAN node in the legacy radio access network to accept the handover, an identifier related to the voice session, an STN-SR and legacy CS domain security information. The NF service provider initiates handover by transmitting the obtained information to the legacy CN over Sv-interface.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: March 15, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jari Vikberg, Ralf Keller
  • Patent number: 11258831
    Abstract: This invention is related to S8 Home Routing (S8HR), under specification by the Global System for Mobile Communications (GSM) Association (GSMA) and 3rd Generation Partnership Project (3GPP). In a first aspect of the invention, a method is provided for enabling Lawful Interception (LI) when a wireless communication terminal performs S8HR roaming. The method comprises receiving, at a first LMISF from a first SGW serving the wireless communication terminal, IMS-related information of the wireless communication terminal required for performing LI, and providing, from the first LMISF upon the wireless communication terminal relocating to a second SGW serving the wireless communication terminal, the received IMS-related information of the wireless communication terminal required for performing LI, to a second LMISF associated with the second SGW.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: February 22, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Roland Gustafsson, Maurizio Iovieno, Ralf Keller, Patrik Dannebro
  • Publication number: 20220053401
    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: Application
    Filed: September 11, 2019
    Publication date: February 17, 2022
    Inventors: George Foti, Ralf Keller
  • Publication number: 20220029215
    Abstract: A battery arrangement for a motor vehicle, with a battery which has a battery housing and a plurality of battery cells. The battery cells are arranged in the battery housing. A protective plate is arranged at least on one side of the battery. A damage detection apparatus has a damage indicator. The damage indicator is arranged on the protective plate. The damage indicator is embedded into the protective plate.
    Type: Application
    Filed: July 21, 2021
    Publication date: January 27, 2022
    Applicant: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Philipp Kellner, Teiwen Fehse, Christopher Volkmer, Dominik Klaiber, Ralf Keller, Maximilian Müller