Stephen A. Howell

System and method for determining availability of radio access technology associated with a wireless network

Method for a radiotelephone to scan for alternate radiotelephone systems

Method for selecting a core network

Method and apparatus for anonymous network access in the absence of a mobile subscriber identity module

Network assisted cell reselection in wireless communications systems and methods

Method for a communication device to search for an alternate network upon a registration failure

Method and apparatus for interchanging and processing mobile radio subsystem control information

Method for reducing wireless communication procedure failure

Data carrier system

Method for a cellular radiotelephone to scan for service from adjacent cells