Mobile Station State Derivation for Network Coverage Validation

The patent creates a virtual copy of the network coverage validation process by deriving device states from collected data and generating simulated drive test results. Instead of physically moving test equipment through the target market, the system collects data from stationary devices and reconstructs network availability information through state derivation algorithms, producing results that mirror what a physical drive test would reveal but without the time and logistical overhead.

The patent replaces the mechanical system of physical drive test equipment movement with an automated data collection and processing system. Mobile devices automatically collect connectivity data across multiple radio access technologies, and a server system processes this data to derive device states and validate network coverage, substituting the mechanical drive test approach with an automated computational methodology that eliminates the need for physical equipment deployment and movement.

The patent segments the complex multi-technology network validation process into distinct device state categories (connected, camped, registered, etc.) for different radio access technologies. By dividing the validation into discrete state types and using specific derivation rules for each state and technology combination, the system manages the complexity of validating multiple networks and modes operationally, making the validation process more tractable and systematic.

The patent introduces a server system as an intermediary that collects data from multiple mobile devices across different networks and technologies, then processes this data centrally to derive device states and generate validation results. This intermediary system coordinates the complex interactions between multiple technologies and devices, managing the validation process centrally rather than requiring direct complex interactions between all network elements, thereby reducing overall system complexity.