Patents by Inventor Raquel Sempere

Raquel Sempere 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).

  • Seamless handoff across heterogeneous access networks using a handoff controller in a service control point
    Publication number: 20060276192
    Abstract: In a telecommunications network in which a mobile handset is capable of communicating in both an IP-domain and a non-IP domain, the handoff of an existing communications session between the mobile handset and a fixed user is facilitated by a handoff controller implemented in a service control point. The handoff controller implements different handoff methods depending on the status of the fixed user and the transition of the mobile user. Additionally 802.21 Media Independent Handover Function in conjunction with SIP is used to facilitate handover between IP and Non-IP points in the system.
    Type: Application
    Filed: May 18, 2006
    Publication date: December 7, 2006
    Inventors: Ashutosh Dutta, Subir Das, Donald Lukacs, Tao Zhang, David Shrader, Raquel Sempere, Stephanie Demers, Bryan Lyles, James Alfieri