Patents by Inventor Afshin Abtin

Afshin Abtin 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: 12095827
    Abstract: A method performed by a first node (111) managing a P-CSCF in a first communications network (101). The method is for handling identification of a second communications network (201). One of the communications networks is a home network and the other is a visited network. The first node (111) obtains (701) a unique identifier uniquely identifying the second communications network (201) in a plurality of networks (200) sharing a Mobile Network identifier. The unique identifier is based on: a) an MCC and an MNC, corresponding to a shared PLMN identifier, and b) a subscriber identifier corresponding to the second network (201). The first node (111) also processes (702) provision of an IMS service across the communications networks, to a device (230) operating in the visited network, based on the identifier. The processing (702) comprises, in the home network, one of: i) application of a policy or rule, and ii) routing a communication to a S-CSCF.Publ.
    Type: Grant
    Filed: January 12, 2021
    Date of Patent: September 17, 2024
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Afshin Abtin, Mats Buchmayer
  • Publication number: 20240276183
    Abstract: A method, performed by a policy controlling node, for handling a service for a communications device. The method comprises receiving, during the establishment of the service, from an application node, a first message comprising a preliminary service information for the service and an indicator of a request to provide network-provided location information; and in response to receiving the first message, providing a second message, to a session management node controlling a data session of the communications device. The data session is associated with the service. The second message comprises an indicator of a request for early network-provided location information to be provided before resource reservation for the service is performed and an indication of a set of policies for controlling resource reservation for the service. The indication of the set of policies is based on the preliminary service information received in the first message.
    Type: Application
    Filed: June 25, 2021
    Publication date: August 15, 2024
    Inventors: Chunmiao Liu, Afshin Abtin, lrene Martin Cabello, Liangliang Guo, Sorin Surdila
  • 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
  • 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: 11838805
    Abstract: A technique for preparing User Equipment, UE, mobility from a 4G network to a 2G/3G network for a UE moving from a 5G network to the 2G/3G network via the 4G network is disclosed. A method implementation of the technique is performed by a network node after the UE has moved from the 5G network to the 4G network and includes triggering, for each of one or more bearers handed over from the 5G network to the 4G network for the UE, an update bearer procedure to provide one or more 2G/3G Quality of Service, QoS, parameters to the UE required to hand over the respective bearer to the 2G/3G network when the UE moves from the 4G network to the 2G/3G network.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: December 5, 2023
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Ralf Keller, Afshin Abtin, Ann-Christine Sander
  • Publication number: 20230284108
    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: Application
    Filed: August 5, 2020
    Publication date: September 7, 2023
    Inventors: Afshin ABTIN, Christer GUSTAFSSON, Ralf KELLER, Ann-Christine SANDER
  • Publication number: 20230269582
    Abstract: A method performed by a first IP multimedia system, IMS, node, for handling authentication of a user equipment, UE, in a communication network. The method includes receiving a request from a second IMS node to retrieve an authentication vector. The request includes a private identifier generated from a subscription permanent identifier. The method further includes sending a request to retrieve an indication, where the request includes a subscription permanent identifier, receiving the indication, and generating the authentication vector using the received indication. In addition, the method includes sending the generated authentication vector to the second IMS node for authenticating the UE.
    Type: Application
    Filed: August 13, 2021
    Publication date: August 24, 2023
    Inventors: David CASTELLANOS ZAMORA, Afshin ABTIN
  • 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: 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: 20230045195
    Abstract: A method performed by a first node (111) managing a P-CSCF in a first communications network (101). The method is for handling identification of a second communications network (201). One of the communications networks is a home network and the other is a visited network. The first node (111) obtains (701) a unique identifier uniquely identifying the second communications network (201) in a plurality of networks (200) sharing a Mobile Network identifier. The unique identifier is based on: a) an MCC and an MNC, corresponding to a shared PLMN identifier, and b) a subscriber identifier corresponding to the second network (201). The first node (111) also processes (702) provision of an IMS service across the communications networks, to a device (230) operating in the visited network, based on the identifier. The processing (702) comprises, in the home network, one of: i) application of a policy or rule, and ii) routing a communication to a S-CSCF.Publ.
    Type: Application
    Filed: January 12, 2021
    Publication date: February 9, 2023
    Inventors: Afshin Abtin, Mats Buchmayer
  • 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
  • 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
  • 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
  • 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
  • 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
  • Publication number: 20210410057
    Abstract: It is disclosed a server node, a 5G mobile communication network and a method performed therein, providing information, to a network function (NF) service consumer, for supporting selection of an NF instance out of a group of NF instances providing a target NF service. By using a network repository function (NRF) discovery request/response procedure, and an NF cluster instance ID that relates NF instances providing a certain service where the NF instances are hosted by one and the same NF, the NRF 406 determines IP addresses with which the requested service can be accessed. By using the NF cluster instance, one or more IP addresses for accessing NF instances providing the requested service hosted by one and the same NF 402, 404 is provided to the NF service consumer 408. The latency sensitive services and where load balancing is required, the NF service instance value knowledge about specific NF hosting the requested service, as well as High availability (HA) support.
    Type: Application
    Filed: May 22, 2018
    Publication date: December 30, 2021
    Inventors: Afshin Abtin, Charles Hegarty, Jonas Falkenå
  • Publication number: 20210400144
    Abstract: Embodiments herein relate to a method performed by a network node for handling communication of a user equipment, UE, in a wireless communication network. The network node transmits to a radio network node, a first message for setting up context of the UE, wherein the first message comprises a request indicator, and wherein the request indicator requests a voice match response from the radio network node indicating whether voice over packet switched is supported or not by the UE and/or the radio network node. Furthermore, the network node receives from the radio network node, a second message for indicating a capability of the UE, wherein the second message comprises a support indication indicating whether voice over packet switched is supported or not by the UE and/or the radio network node.
    Type: Application
    Filed: November 15, 2019
    Publication date: December 23, 2021
    Inventors: Afshin ABTIN, Christer GUSTAFSSON, Ralf KELLER, Peter RAMLE