Patents by Inventor Alexandru C. Ionescu

Alexandru C. Ionescu 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 call mode preference in wireless communication networks
    Patent number: 8867411
    Abstract: A system and method to determine a type of wireless network that is to be used for an emergency communication session that is initiated at a mobile device. A Session Initiation Protocol (SIP) header is modified to introduce an emergency call mode preference (ECMP) field into the header. When a mobile device registers a session with an IP Multimedia Subsystem (IMS), the ECMP field is populated by the service provider with information that conveys the preferred network to use when an emergency communication session is initiated by a user of the mobile device. In the event of a subsequent request to start an emergency communication session using the mobile device, the mobile device utilizes the preferred network to establish communication.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: October 21, 2014
    Assignee: T-Mobile USA, Inc.
    Inventors: Alexandru C. Ionescu, Suryo Sukendro, Michael Hooker, Gunjan Nimbavikar
  • EMERGENCY CALL MODE PREFERENCE IN WIRELESS COMMUNICATION NETWORKS
    Publication number: 20120236760
    Abstract: A system and method to determine a type of wireless network that is to be used for an emergency communication session that is initiated at a mobile device. A Session Initiation Protocol (SIP) header is modified to introduce an emergency call mode preference (ECMP) field into the header. When a mobile device registers a session with an IP Multimedia Subsystem (IMS), the ECMP field is populated by the service provider with information that conveys the preferred network to use when an emergency communication session is initiated by a user of the mobile device. In the event of a subsequent request to start an emergency communication session using the mobile device, the mobile device utilizes the preferred network to establish communication.
    Type: Application
    Filed: November 18, 2011
    Publication date: September 20, 2012
    Applicant: T-Mobile USA, Inc.
    Inventors: Alexandru C. Ionescu, Suryo Sukendro, Michael Hooker, Gunjan Nimbavikar