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).

  • MULTI-CELL BATTERY MODULE
    Publication number: 20200259226
    Abstract: A multi-cell battery module (20) for a traction battery (12) of a motor vehicle (10) traveling in a forward direction (V) has a module housing (22) with a metal bottom wall (27), and a plurality of plate-like and deformable pouch battery cells (301-305) arranged in the module housing (20) vertically, parallel to one another and projecting in the transverse direction to the forward direction. A non-adhesive and non-cured thermally conductive potting compound (50) is poured in in a manner directly adjoining the bottom wall (27) and in thermal contact with the bottom wall (27). The thermally conductive potting compound makes thermal contact with the lower ends of the pouch battery cells (301-305).
    Type: Application
    Filed: February 11, 2020
    Publication date: August 13, 2020
    Inventor: Ralf Keller
  • Session transfer in a communication network
    Patent number: 10716033
    Abstract: A method and apparatus for transferring a session from a packet switched access network to a circuit switched access network. A Mobility Management Entity receives a service type indicator from a gateway node. The service type indicator indicates a type of service for the session, and is associated with bearers used for the session. The Mobility Management Entity subsequently receives, from an eNodeB, an indication that the session is to be transferred from the packet switched network to the circuit switched access network. The Mobility Management Entity determines the bearers associated with the session using the service type indicator, and initiates transfer of the session using those bearers. This ensures that the correct bearers are transferred regardless of whether or not identifiers such as QCI values have been ascribed to other types of service.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: July 14, 2020
    Assignee: TELEGONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Fredrik Lindholm, Ralf Keller
  • SYSTEMS AND METHODS FOR USING GBA FOR SERVICES USED BY MULTIPLE FUNCTIONS ON THE SAME DEVICE
    Publication number: 20200187000
    Abstract: This specification presents methods and apparatus in a device and a network node implementing a Bootstrapping Server Function, BSF, for enabling multiple service functions/clients in the device sharing a common public identity and each performing its own registration to one or more (IMS) core network, to use a common bootstrapping of application security based on the Generic Bootstrapping Architecture, GBA/Generic Authentication Architecture, GAA, infrastructure. Therefore, when using Extensible Markup Language, XML, Configuration Access Protocol, XCAP, or the likes, the multiple service functions in the device use the same authentication method for all XCAP traffic or the likes, such as GBA/GAA but enabling it to use the same key sets (e.g., same B-TID).
    Type: Application
    Filed: December 6, 2019
    Publication date: June 11, 2020
    Inventors: Cristina BADULESCU, Sorin SURDILA, Ralf KELLER
  • A Method of Establishing a Voice Over Internet Protocol, VOIP, Call between a Calling User Equipment, UE, and a Called UE
    Publication number: 20200170064
    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: Application
    Filed: October 30, 2017
    Publication date: May 28, 2020
    Inventors: Ralf Keller, Afshin Abtin, Venkata Ramesh Balabhadruni, Jinyin Zhu
  • SAFETY APPARATUS FOR A BATTERY
    Publication number: 20200161717
    Abstract: A safety apparatus (20) for a battery (80) has a base (22) for a vehicle (10), sensors (31, 32, 33, 34) and an evaluation apparatus (40). Each sensor (31, 32, 33, 34) is designed to generate a sensor signal (35) on a basis of a deformation of the base (22) and to supply the sensor signal to the evaluation apparatus (40). The evaluation apparatus (40) ascertains from the sensor signals (35) both first information about the location of the deformation of the base (22) and second information about the level of the deformation, and uses the first information and the second information as a basis for determining whether a first state (Z1) is present, in which a driving mode can be maintained, or whether a second state (Z2) is present, in which a driving mode can no longer be maintained.
    Type: Application
    Filed: November 20, 2019
    Publication date: May 21, 2020
    Inventors: Thomas Fritz, Armin Steck, Marcus Zacher, Dominik Lembke, Ralf Keller, Maximilian Mueller, Marc Patt, Markus Graef, Philipp Straub
  • Method and device for network initiated packet data unit, PDU, session establishment in a telecommunication network
    Patent number: 10652942
    Abstract: A method of establishing a Packet Data Unit, PDU, session between a User Equipment, UE (51; 600), and a data network identified by a Data Network Name, DNN, in a telecommunication network. The telecommunication network comprising an Access and Mobility Function, AMF (56; 66; 500), and a Policy Control Function, PCF (60; 700).
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: May 12, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: David Castellanos Zamora, Peter Hedman, Ralf Keller, Angel Navas Cornejo
  • Methods and nodes for enabling management of traffic steering policy
    Patent number: 10630847
    Abstract: A method and a radio network node, a method and a core network node as well as a method and a charging node for enabling management of a traffic steering policy are disclosed. The radio network node receives, from the core network node, an indication of the traffic steering policy indicating one or more access resources and at least one of a PDN connection, a packet flow and a bearer to use on the one or more access resources. Furthermore, the radio network node determines to steer traffic. radio network node transmits access information to the core network node. The access information indicates a currently used access resource for the PDN connection, the packet flow or the bearer. The core network node transmits the access information. The charging node determines an amount of traffic for the PDN connection, packet flow or bearer on the currently used access resource.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: April 21, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Jari Vikberg, Ralf Keller, Stefan Rommer
  • Indication of Evolved Packet System Fallback Capability
    Publication number: 20200120485
    Abstract: There is provided mechanisms for indicating evolved packet system (EPS) fallback capability. A method is performed by a user equipment (UE). The method comprises providing, towards a call session control function (CSCF), call status information with respect to EPS fallback capability of the UE. There is also provided a UE configured to perform such a method.
    Type: Application
    Filed: October 12, 2018
    Publication date: April 16, 2020
    Inventors: Afshin Abtin, Ralf Keller
  • Energy store for a vehicle and method for providing an energy store for a vehicle
    Patent number: 10622606
    Abstract: An energy store for a vehicle has an energy store cell arrangement and a housing that at least partly covers the energy store cell arrangement. A compensation apparatus is arranged between the housing and the energy store cell arrangement.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: April 14, 2020
    Assignee: Dr. Ing. h.c.F. Porsche Aktiengesellscahft
    Inventors: Ralf Keller, Eduard Ewert
  • Quality of service initiated handover
    Patent number: 10595250
    Abstract: The application relates to a method for operating a first radio access node 100 of a first packet switched mobile communications network. The first radio access node receives a request for establishing a data packet session requiring a defined quality of service and determines that the data packet session cannot be handled by the first packet switched communications network. The first radio access node triggers a hand over to a second packet switched mobile communications network based on the determining and transmits an indication towards a mobile entity (200) involved in the data packet session indicating that a resource for the data packet session will be available when the handover is completed.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: March 17, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Ralf Keller, Afshin Abtin, Patrik Dannebro
  • ROBUSTNESS-ADAPTIVE ACCESS NETWORK
    Publication number: 20200077281
    Abstract: A method involving a terminal (110) and an access network node (160) in an access network (100) for connecting said terminal (110) to the access network node (160) and wherein said terminal (110) and access network (100) is configurable to support and being adaptive to a plurality of robustness levels. Each robustness level corresponds to a transmission delay and loss limit which can be configured per individual traffic flow. Robustness levels for the terminal and the access network are exchanged in order optimize the end-to-end Quality of Experience, QoE. This is applicable to access networks that show large variations in terms of network performance (for example radio access networks).
    Type: Application
    Filed: October 20, 2017
    Publication date: March 5, 2020
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Bo BURMAN, Ralf KELLER
  • Routing based on access point name (APN) information
    Patent number: 10575165
    Abstract: It is desirable for a user equipment (UE) 100 to be able to determine if connecting using an access point name (APN) would result in a home routed or local breakout (LBO) routed connection. With this information, the UE can decide which APNs to use for packet data network (PDN) connections e.g. to ensure that the bearers on the PDN connection are able to carry certain services which are incompatible with home routing or LBO routing, or to ensure that charging is carried out by the home or visited network, as desired (e.g. to avoid roaming fees). Alternatively, the user can be presented with the option of home routing or LBO routing for a connection. In order to provide this information to the UE, modified signalling is proposed, among others, by means of a method of operating a mobility management entity (MME) 200 in a mobile telecommunications network.
    Type: Grant
    Filed: September 1, 2014
    Date of Patent: February 25, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ralf Keller, Ann-Christine Sander, Ivo Sedlacek
  • Systems and methods for using GBA for services used by multiple functions on the same device
    Patent number: 10506429
    Abstract: This specification presents methods and apparatus in a device and a network node implementing a Bootstrapping Server Function, BSF, for enabling multiple service functions/clients in the device sharing a common public identity and each performing its own registration to one or more (IMS) core network, to use a common bootstrapping of application security based on the Generic Bootstrapping Architecture, GBA/Generic Authentication Architecture, GAA, infrastructure. Therefore, when using Extensible Markup Language, XML, Configuration Access Protocol, XCAP, or the likes, the multiple service functions in the device use the same authentication method for all XCAP traffic or the likes, such as GBA/GAA but enabling it to use the same key sets (e.g., same B-TID).
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: December 10, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Cristina Badulescu, Sorin Surdila, Ralf Keller
  • Indication of packet based voice support in a mobile network with different radio access technologies
    Patent number: 10506499
    Abstract: A mobile network provides first accesses implemented by a first radio access technology and second accesses implemented by a second radio access technology, which is different from the first radio access technology. A network node controls one or more of the first accesses records at least one mobility event. The mobility event corresponds to movement of a user equipment from one of the first accesses controlled by the network node to one of the second accesses. Further, the network node receives a query from a further network node. Depending on the recorded at least one mobility event, the network node responds to the query with an indication whether voice communication over packet switched access is supported for the user equipment.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: December 10, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ralf Keller, Afshin Abtin, Magnus Hallenstål
  • Support of Single Radio Voice call Continuity in Next Generation (5G) Networks
    Publication number: 20190297538
    Abstract: Apparatus and methods relating to enabling a wireless device to perform SRVCC when connected to a 3GPP specified gNB and a 5G core network that does not support SRVCC are disclosed. In some embodiments, a method of operation of a wireless device comprises providing an indication to the 5G core network that the UE support SRVCC in EPC mode and receiving instruction to connect to an eNB in EUTRAN and EPC that supports SRVCC to a circuit switched network. In this manner, the gNB and the 5G Core network is not required to support SRVCC. Related embodiments in gNB and a control plane entity in the G core network are also provided.
    Type: Application
    Filed: October 5, 2017
    Publication date: September 26, 2019
    Inventors: Ralf KELLER, Gunnar MILDH, Paul SCHLIWA-BERTLING, Peter HEDMAN, Aldo BOLLE, Ann-Christine SANDER
  • IMS Emergency Calls for Roaming UEs
    Publication number: 20190274025
    Abstract: A method in a proxy call session control function, P-CSCF, of handling an unauthenticated emergency call originating from a roaming user equipment that is not attached to the P-CSCF. The P-CSCF receives a session initiation protocol (SIP) REGISTER request from the UE, where the REGISTER request relating to the emergency registration. The P-CSCF determines an IP address of the UE. The P-CSCF sends an identity query to a policy and charging rules function (PCRF) indicating the IP address of the UE and requesting other identifiers of the UE. The P-CSCF receives one or more other identifiers of the UE from the PCRF. The P-CSCF obtains a TEL and/or SIP uniform resource identifier (URI) for the UE on the basis of at least one of the one or more other identifiers. The P-CSCF sends a 200 OK response to the UE in response to the SIP REGISTER request, where the 200 OK response includes the TEL and/or SIP URI.
    Type: Application
    Filed: May 17, 2019
    Publication date: September 5, 2019
    Inventors: Fredrik LINDHOLM, Ralf KELLER, Susana FERNANDEZ ALONSO, Ivo SEDLACEK
  • Control of Radio Technology Usage by Scheduling Restriction
    Publication number: 20190268895
    Abstract: A node (150) of a wireless communication network controls connectivity of a radio device (10) to the wireless communication network. The connectivity is based on parallel usage of a first radio technology and a second radio technology. Depending on subscription data associated with the radio device (10), the node controls a restriction of scheduling of radio transmissions of the radio device (10) for one of the first radio technology and the second radio technology.
    Type: Application
    Filed: February 6, 2017
    Publication date: August 29, 2019
    Inventors: Ralf Keller, Jarl Tomas Holmström, Gunnar Rydnell, Hans Krister Mikael Sällberg
  • Handling a terminating circuit switched signaling service to a terminal in a mobile network
    Patent number: 10356668
    Abstract: Methods, nodes, computer programs and a mobile network for handling a terminating circuit switched signaling service to a terminal in a mobile network are described. A method of handling a terminating circuit switched signaling service to a terminal in a mobile network is described. The signaling service is distinct from a call. The mobile network comprises a first control node and a second control node. The method is performed by the first control node. The method comprises receiving signaling information for terminating the circuit switched signaling service to the terminal, subsequent to the step of receiving, detecting that the terminal has requested a location update from a second control node of the mobile network, and, based on the step of detecting, forwarding the received signaling information to the second control node.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: July 16, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Karl-Peter Ranke, Sven Gemski, Ralf Keller
  • METHODS AND NODES FOR ENABLING MANAGEMENT OF TRAFFIC STEERING POLICY
    Publication number: 20190191035
    Abstract: A method and a radio network node, a method and a core network node as well as a method and a charging node for enabling management of a traffic steering policy are disclosed. The radio network node receives, from the core network node, an indication of the traffic steering policy indicating one or more access resources and at least one of a PDN connection, a packet flow and a bearer to use on the one or more access resources. Furthermore, the radio network node determines to steer traffic. radio network node transmits access information to the core network node. The access information indicates a currently used access resource for the PDN connection, the packet flow or the bearer. The core network node transmits the access information. The charging node determines an amount of traffic for the PDN connection, packet flow or bearer on the currently used access resource.
    Type: Application
    Filed: September 7, 2016
    Publication date: June 20, 2019
    Inventors: Jari VIKBERG, Ralf KELLER, Stefan ROMMER
  • A Method, Network Functions and a Computer Program Product for Supporting the Handing Over of a User Equipment, UE, from a First Type of Radio Access Technology, RAT, to a Second Type of RAT
    Publication number: 20190159090
    Abstract: A method of initiating a handover of a User Equipment, UE, from a first type of Radio Access Technology, RAT, to a second type of RAT, wherein said UE is attached to a core network via an Access Node, AN, comprised by a Radio Access Network, RAN, utilizing said first type of RAT, wherein said method comprises the steps of transmitting, by said UE, to said AN, measurement data relating to qualities of links between said UE and access nodes in said RAN, receiving, by said UE, an indicator from said AN, wherein said indicator informs said UE that there is a risk of losing connectivity between said UE and said Radio Access Network, initiating, by said UE, triggered by said received indicator, a handover in order to access the CN via said second type of RAT.
    Type: Application
    Filed: December 8, 2017
    Publication date: May 23, 2019
    Inventors: Ralf Keller, Bo Burman, George Foti