Multi-SIM RF Unit Power Management via PLMN Cell Coordination

The patent implements dynamic RF unit management where the system transitions between different operational states: both RF units active when needed for communication, and one RF unit disabled when not in use. The controller dynamically adjusts the operational state of RF units based on call status, network conditions, and user activity, allowing the device to adapt its power consumption profile while maintaining communication reliability when required.

The patent extracts and disables one RF unit from active operation when it is not needed for current communication tasks. By selectively taking out the inactive RF unit from the operational system and placing it in a low-power state, the device reduces overall power consumption while maintaining necessary communication capabilities through the remaining active RF unit.

The system dynamically manages RF unit camping states based on operational needs. When both RF units are camped on different PLMN cells, the system monitors their activity status and disables one RF unit when neither is actively in use, thereby reducing power consumption while maintaining the capability to quickly re-enable and switch networks when versatility is required.

The patent implements a unified controller that manages multiple RF units and SIM cards, allowing a single control architecture to handle diverse network scenarios. The controller can direct either RF unit to serve different network operators as needed, providing universal network access capability while optimizing power consumption by consolidating active RF units rather than maintaining separate continuous operations for each SIM.

The system implements dynamic idle mode management where RF units are disabled when not actively in use, even for incoming call monitoring. The controller assesses whether an RF unit needs to remain active based on current call status, network conditions, and user activity, transitioning RF units between active and disabled states to extend battery life while maintaining adequate call reception capability through the remaining active RF unit.

The patent employs a strategy where one RF unit is discarded from active operation during idle periods when not needed for current communication tasks. The disabled RF unit remains in a low-power state but can be quickly recovered and re-enabled when incoming calls or network switching requirements arise, thus extending battery life during idle periods while preserving call reception reliability when needed.