Incremental Query Timer for Roaming Network Coverage

The patent implements periodic querying with exponentially increasing intervals. The UE queries for preferred networks at initial frequent intervals to ensure quick detection, then progressively extends the time between queries (e.g., doubling the interval after each unsuccessful query) up to a maximum interval. This periodic action with varying frequency allows the system to balance reliable network detection with battery conservation, especially during roaming when charging access is limited.

The patent applies partial action by implementing selective querying based on roaming status. Instead of continuously scanning all RATs regardless of condition, the UE performs incremental querying only when specific conditions are met (e.g., when roaming, when signal quality degrades, or at scheduled intervals). The system performs just enough scanning to maintain adequate network coverage detection without exhaustively searching all possible networks, thereby reducing energy consumption while preserving necessary network adaptability.

The patent transforms the static, fixed-interval querying approach into a dynamic system where the query interval adapts based on conditions. The querying interval starts at a baseline frequency to ensure consistent monitoring, but then dynamically adjusts by incrementally increasing the time between queries based on factors such as whether the UE is roaming, current signal quality, and whether preferred networks are detected. This dynamic adjustment maintains reliable network monitoring when needed while extending battery life during periods when frequent querying is less critical.