Patents by Inventor John Gafrick

John Gafrick 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 of providing notification of abnormal conditions during non-access stratum (NAS) message tunneling
    Patent number: 8948753
    Abstract: The present invention provides a method that includes generating, in response to a non-access stratum (NAS) message transmitted between a mobility management entity and a visiting location register, a response message including information indicating a message type, an identifier of a mobile unit associated with the NAS message, and a cause associated with generating the response message. The method also includes transmitting the response message.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: February 3, 2015
    Assignee: Alcatel Lucent
    Inventors: Jennifer J. N. Liu, Michael Edwards, Frances Chin, John Gafrick
  • METHOD OF PROVIDING NOTIFICATION OF ABNORMAL CONDITIONS DURING NON-ACCESS STRATUM (NAS) MESSAGE TUNNELING
    Publication number: 20110269457
    Abstract: The present invention provides a method that includes generating, in response to a non-access stratum (NAS) message transmitted between a mobility management entity and a visiting location register, a response message including information indicating a message type, an identifier of a mobile unit associated with the NAS message, and a cause associated with generating the response message. The method also includes transmitting the response message.
    Type: Application
    Filed: June 28, 2010
    Publication date: November 3, 2011
    Inventors: Jennifer J.N. Liu, Michael Edwards, Frances Chin, John Gafrick
  • RFCI mapping to support backward-compatible transcoder-free operation for UMTS
    Publication number: 20070140293
    Abstract: A transcoder-free operation (TrFO) implementation is disclosed that provides backward-compatibility, or interworking between nodes supporting Iu UP version 1 and version 2. A media gateway (MGW) on the terminating side of a prospective call detects mismatching RFCI values between an originating and terminating side of a prospective call, such as may occur when an originating MGW supports Iu UP version 2 and a terminating Radio Network Controller (RNC) supports Iu UP version 1. The terminating MGW performs a mapping and translation function to convert RFCI values associated with Iu UP version 2 to those of version 1, or vice versa, so as to accommodate the terminating RNC supporting Iu UP version 1.
    Type: Application
    Filed: December 16, 2005
    Publication date: June 21, 2007
    Inventors: Anjana Agarwal, John Gafrick, Maridi Makaraju, Jakob Neulist, Charu Verma