Patents by Inventor M. R. Srikrishna

M. R. Srikrishna 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).

  • Method for a communication device to search for an alternate network upon a registration failure
    Publication number: 20050037753
    Abstract: A method for a communication device to search for service from an alternate public land mobile network when a public land mobile network rejects a registration message from the communication device includes a first step of having the device roam to a visited public land mobile network (PLMN). A next step includes sending a registration message to the PLMN. A next step includes rejecting the registration message by the PLMN. This rejection can include ignoring the registration or sending an error message back to the device. A next step then includes searching for service from an alternate public land mobile network.
    Type: Application
    Filed: August 12, 2003
    Publication date: February 17, 2005
    Inventors: Niels Andersen, Stephen Howell, M. R. Srikrishna, Donald Dorsey