Mobile Terminal Usage Area Restriction via Cell Identification

The patent segments the large location area code region into multiple smaller cell identification regions. Instead of using a single location area code that covers a large geographic area, the system divides the service area into multiple cells, each with its own identification information. This segmentation allows for more precise location-based service restriction while maintaining manageable system complexity through hierarchical structure.

The patent applies local quality by enabling different restriction precision levels for different regions. Cell identification information provides fine-grained precision within specific local areas, while location area codes provide broader regional coverage. The system can selectively apply cell-level or area-level restriction depending on the specific service requirements, optimizing both precision and complexity for different scenarios.

The patent implements a nested structure where cell identification information is contained within the broader location area code framework. The cell ID serves as a more detailed subset of the location area code system. This nesting allows the terminal to first identify the general location area and then refine to specific cell level, achieving high precision without requiring completely separate processing systems for each identification layer.

The patent performs preliminary action by pre-configuring cell identification information and its corresponding service restriction rules in the network side before the terminal needs to access services. The terminal receives and stores cell ID information along with associated location area codes during initial network registration or service setup, so that when service restriction is needed, the terminal already has the necessary identification data readily available, reducing real-time processing complexity.