Kenneth Lee Sowles

Location determination method and system using multi-beam satellites

Method and apparatus for qualifying access to communication system services based on subscriber unit location

Apparatus for mobile unit acquisition in a satellite communication system and method therefor

Method and apparatus for providing billing services for a mobile group of communication system users

Method and apparatus for communications hand-off between multiple satellite systems

Providing communication services to mobile user groups

Cell-based emergency call systems and methods

Method and apparatus for registering mobile user groups with a radio telecommunication system

Combined registration and call continuation method and apparatus for a mobile communication system

Satellite communication system and method thereof