Terminal Registration Timer Control for NPN Access Security

The access management network element performs preliminary configuration of a restricted registration timer before allowing terminal device registration. This timer is set in advance to automatically expire after a predetermined period, forcing deregistration. By establishing this time constraint beforehand, the system prevents unauthorized devices from camping or accessing services for extended periods while still allowing legitimate devices to complete their registration and data configuration processes.

The system implements periodic action by establishing a restricted registration timer that automatically expires after a predetermined period. This timer creates a cyclic pattern where terminal devices must periodically re-register or deregister from the network. Legitimate devices can maintain service access through proper re-registration, while unauthorized devices are automatically forced to deregister when the timer expires, thereby controlling network resource consumption.

The access management network element implements self-service by automatically managing the restricted registration timer without requiring external intervention. The timer is configured in advance and automatically expires to force deregistration of terminal devices. This self-managing mechanism prevents unauthorized device access through automated time-based control, reducing the need for complex manual control functions or additional network elements.