Silent Period Utilization in Wireless Mobile Devices

The system performs preliminary actions by proactively discovering and evaluating target networks during silent periods before handoff is needed. This includes obtaining network information, evaluating suitability, and preparing handoff parameters in advance, so that when handoff becomes necessary, the device can switch quickly without continuous monitoring, thereby reducing energy consumption while maintaining connectivity.

Instead of continuous monitoring, the system employs periodic action by activating network interface monitoring only during predetermined silent periods when no data transmission is occurring. The device switches between sleep mode and active monitoring periodically, allowing it to discover networks and perform evaluations only during these brief windows, thus significantly reducing overall energy consumption while maintaining network awareness.

The handoff process is segmented into distinct phases: silent period detection, target network discovery, network evaluation, and handoff execution. Each phase is handled by dedicated functional modules (silent period predictor, network discoverer, evaluator, etc.), allowing the complex handoff process to be broken down into manageable, independent tasks that can be executed sequentially during appropriate silent periods, reducing overall device complexity while maintaining speed.

The system performs preliminary network discovery and evaluation actions during silent periods before actual handoff is required. By obtaining network information, evaluating target networks, and preparing handoff parameters in advance, the device reduces the complexity of the actual handoff execution phase, as much of the complex processing has already been completed during the preparatory silent period.

The system applies local quality by assigning different tasks to different silent periods based on their urgency and resource requirements. Critical operations like handoff preparation receive priority in silent periods with sufficient duration, while less time-sensitive tasks like peer-to-peer information sharing are scheduled in remaining silent periods. This localized task allocation optimizes resource utilization without causing delays in critical operations.

The system employs partial action by not attempting to fill every silent period with all possible tasks. Instead, it selectively performs only the necessary tasks during each silent period based on current device state and priorities. This prevents overloading the system and ensures that critical operations receive adequate attention and time, while still achieving good overall resource utilization through selective task execution.