Patents by Inventor Stere Preda

Stere Preda 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: 10588164
    Abstract: In one aspect of the teachings herein, a controlling gateway and an associated radio access point are configured for operation in a radio access network and use a radio protocol stack that is split on the network side between the gateway and the access point, for conveying radio bearer traffic going between the radio access network and a wireless device. According to methods and apparatuses disclosed, the radio protocol entities affected by the stack split communicate using Internet Protocol, IP, sessions. Advantageously, the radio bearer traffic conveyed over the split stack maps to different IP sessions in dependence on any one or more of network capabilities, various isolation or privacy requirements associated with the device and/or traffic, the types of data being conveyed, the types of radio bearers involved, and the involved Radio Link Control, RLC, operating modes.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: March 10, 2020
    Assignee: TELEFONATIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Suresh Krishnan, Stere Preda, Catherine Truchan
  • Patent number: 10536925
    Abstract: Systems and methods relating to scheduling Paging Occasions (POs) are disclosed. Embodiments of a method of operation of a network node are disclosed. In some embodiments, the method of operation of a network nodes comprises assigning POs to a plurality of User Equipments (UEs) in accordance with one or more anti-affinity groups such that, for a defined time interval, POs within the defined time interval are assigned to UEs in a same anti-affinity group. The method further comprises notifying the plurality of UEs of the POs assigned to the UEs. In this manner, the expected maximum number of pages within the defined time interval is substantially reduced.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: January 14, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Peyman Talebi Fard, Catherine Truchan, Stere Preda, Suresh Krishnan
  • Publication number: 20190239071
    Abstract: Methods and systems for group re-authentication of devices in a wireless telecommunication network are provided. According to one aspect, a method of operation of a base station in a wireless telecommunication network comprises receiving a group authentication request message from a mobility management entity, the group authentication request message comprising a group identifier; identifying at least one user equipment as belonging to a group identified by the group identifier; sending an individual authentication request message to each identified UE; receiving an authentication response from at least one of the identified UE; aggregating the received at least one authentication response to create a group authentication response message; and sending the group authentication response message to the mobility management entity.
    Type: Application
    Filed: July 14, 2016
    Publication date: August 1, 2019
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Suresh KRISHNAN, Catherine TRUCHAN, Peyman TALEBI FARD, Stere PREDA
  • Publication number: 20190215799
    Abstract: Systems and methods relating to scheduling Paging Occasions (POs) are disclosed. Embodiments of a method of operation of a network node are disclosed. In some embodiments, the method of operation of a network nodes comprises assigning POs to a plurality of User Equipments (UEs) in accordance with one or more anti-affinity groups such that, for a defined time interval, POs within the defined time interval are assigned to UEs in a same anti-affinity group. The method further comprises notifying the plurality of UEs of the POs assigned to the UEs. In this manner, the expected maximum number of pages within the defined time interval is substantially reduced.
    Type: Application
    Filed: June 28, 2016
    Publication date: July 11, 2019
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Peyman Talebi Fard, Catherine Truchan, Stere Preda, Suresh Krishnan
  • Publication number: 20190116031
    Abstract: Methods, systems, and computer program products for security context escrowing are provided herein. According to one aspect, a method of operation of a network node for a telecommunications network comprises storing security context information associated with a small data, fast path connection between a wireless device and a first gateway that is serving the wireless device, determining a change in the gateway that is serving the wireless device from the first gateway to a second gateway, and, in response to determining the change, providing the stored security context information to the second gateway for use with the wireless device.
    Type: Application
    Filed: May 5, 2016
    Publication date: April 18, 2019
    Inventors: Catherine Truchan, Stere Preda, Suresh Krishnan
  • Publication number: 20190053298
    Abstract: In one aspect of the teachings herein, a controlling gateway and an associated radio access point are configured for operation in a radio access network and use a radio protocol stack that is split on the network side between the gateway and the access point, for conveying radio bearer traffic going between the radio access network and a wireless device. According to methods and apparatuses disclosed, the radio protocol entities affected by the stack split communicate using Internet Protocol, IP, sessions. Advantageously, the radio bearer traffic conveyed over the split stack maps to different IP sessions in dependence on any one or more of network capabilities, various isolation or privacy requirements associated with the device and/or traffic, the types of data being conveyed, the types of radio bearers involved, and the involved Radio Link Control, RLC, operating modes.
    Type: Application
    Filed: October 15, 2018
    Publication date: February 14, 2019
    Inventors: Suresh Krishnan, Stere Preda, Catherine Truchan
  • Publication number: 20190020617
    Abstract: Systems and methods relating to an efficient communication system to, e.g., support Massive Machine Type Communication (M-MTC) devices are disclosed. In some embodiments, a base station in a cellular communications network comprises, during initial attachment of a wireless device, establishing a Data Radio Bearer (DRB) between the base station and the wireless device, updating a context of the wireless device to include information regarding the DRB established between the base station and the wireless device to thereby provide a mapping between the DRB and a cellular network identifier of the wireless device. The method further comprises, during initial attachment of the wireless device, providing, to the wireless device, at least a portion of an Internet Protocol (IP) address assigned to the wireless device and updating the context of the wireless device to include the at least a portion of the IP address of the wireless device.
    Type: Application
    Filed: January 5, 2017
    Publication date: January 17, 2019
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Catherine Truchan, Peyman Talebi Fard, Stere Preda, Suresh Krishnan
  • Patent number: 10129914
    Abstract: In one aspect of the teachings herein, a controlling gateway and an associated radio access point are configured for operation in a radio access network and use a radio protocol stack that is split on the network side between the gateway and the access point, for conveying radio bearer traffic going between the radio access network and a wireless device. According to methods and apparatuses disclosed, the radio protocol entities affected by the stack split communicate using Internet Protocol, IP, sessions. Advantageously, the radio bearer traffic conveyed over the split stack maps to different IP sessions in dependence on any one or more of network capabilities, various isolation or privacy requirements associated with the device and/or traffic, the types of data being conveyed, the types of radio bearers involved, and the involved Radio Link Control, RLC, operating modes.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: November 13, 2018
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Suresh Krishnan, Stere Preda, Catherine Truchan
  • Patent number: 9894517
    Abstract: In one aspect of the teachings herein, a radio node provides a local loopback mode of operation in at least some operational instances, in which it loops “local” traffic between wireless devices operating within a local radio cell or cells, rather than forwarding such traffic along to a controlling gateway for handling. The wireless devices operating within the cell(s) and involved in the loopback operation switch over from symmetric encryption that involves the controlling gateway as a secure endpoint for their traffic, to asymmetric or public-private key pair encryption. The radio node uses a correspondingly derived loopback encryption key to enable security on the loopback traffic flow between the involved local devices. Use of the loopback encryption key means that the radio node need not know or otherwise have access to the symmetric encryption keys used by the involved devices and the controlling gateway for “normal” non-loopback operation.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: February 13, 2018
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Stere Preda, Suresh Krishnan, Catherine Truchan
  • Publication number: 20170156165
    Abstract: In one aspect of the teachings herein, a controlling gateway and an associated radio access point are configured for operation in a radio access network and use a radio protocol stack that is split on the network side between the gateway and the access point, for conveying radio bearer traffic going between the radio access network and a wireless device. According to methods and apparatuses disclosed, the radio protocol entities affected by the stack split communicate using Internet Protocol, IP, sessions. Advantageously, the radio bearer traffic conveyed over the split stack maps to different IP sessions in dependence on any one or more of network capabilities, various isolation or privacy requirements associated with the device and/or traffic, the types of data being conveyed, the types of radio bearers involved, and the involved Radio Link Control, RLC, operating modes.
    Type: Application
    Filed: September 21, 2015
    Publication date: June 1, 2017
    Inventors: Suresh Krishnan, Stere Preda, Catherine Truchan
  • Publication number: 20170142577
    Abstract: In one aspect of the teachings herein, a radio node provides a local loopback mode of operation in at least some operational instances, in which it loops “local” traffic between wireless devices operating within a local radio cell or cells, rather than forwarding such traffic along to a controlling gateway for handling. The wireless devices operating within the cell(s) and involved in the loopback operation switch over from symmetric encryption that involves the controlling gateway as a secure endpoint for their traffic, to asymmetric or public-private key pair encryption. The radio node uses a correspondingly derived loopback encryption key to enable security on the loopback traffic flow between the involved local devices. Use of the loopback encryption key means that the radio node need not know or otherwise have access to the symmetric encryption keys used by the involved devices and the controlling gateway for “normal” non-loopback operation.
    Type: Application
    Filed: June 29, 2015
    Publication date: May 18, 2017
    Inventors: Stere Preda, Suresh Krishnan, Catherine Truchan