Patents by Inventor Per Oberg

Per Oberg 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).

  • Emergency signalling in an IP multimedia subsystem network
    Patent number: 8996673
    Abstract: Embodiments of the present invention provide a method and apparatus for handling emergency signaling in an IP Multimedia Subsystem network. A Proxy-Call Session Control Function receives a message requesting set up of a session. The message is associated with an IP Multimedia Private Identity. The P-CSCF determines that the message relates to an emergency call. If an emergency override tag associated with the IMPI is provisioned or set at the P-CSCF, then the message is forwarding the SIP message to a Serving-Call Session Control Function (S-CSCF) for further handling. However, if an emergency override tag associated with the IMPI is not provisioned or set at the P-CSCF, the message is forwarded to an Emergency-Call Session Control Function (E-CSCF). The P-CSCF exercises control over the handling of emergency signaling, according to embodiments of the invention.
    Type: Grant
    Filed: November 2, 2009
    Date of Patent: March 31, 2015
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Fredrik Lindholm, Per Oberg
  • EMERGENCY SIGNALLING IN AN IP MULTIMEDIA SUBSYSTEM NETWORK
    Publication number: 20120221707
    Abstract: Embodiments of the present invention provide a method and apparatus for handling emergency signaling in an IP Multimedia Subsystem network. A Proxy-Call Session Control Function receives a message requesting set up of a session. The message is associated with an IP Multimedia Private Identity. The P-CSCF determines that the message relates to an emergency call. If an emergency override tag associated with the IMPI is provisioned or set at the P-CSCF, then the message is forwarding the SIP message to a Serving-Call Session Control Function (S-CSCF) for further handling. However, if an emergency override tag associated with the IMPI is not provisioned or set at the P-CSCF, the message is forwarded to an Emergency-Call Session Control Function (E-CSCF). The P-CSCF to exercises control over the handling of emergency signaling, according to embodiments of the invention.
    Type: Application
    Filed: November 2, 2009
    Publication date: August 30, 2012
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Fredrik Lindholm, Per Oberg