Dynamic Scan Window Adjustment for BLE Reconnection

The patent applies dynamics by making the scan window size and scanning period adjustable rather than fixed. The master device dynamically changes these parameters based on the link loss duration: using a first scan window size and first scanning period when link loss duration is within a threshold, and a second scan window size and second scanning period when it exceeds the threshold. This dynamic adjustment resolves the contradiction between scanning reliability and power consumption.

The patent directly applies parameter changes by modifying the scan window size and scanning period parameters based on link loss conditions. When link loss duration is short, the device uses parameters optimized for quick reconnection (larger scan window, shorter period). When link loss duration is long, it switches to parameters optimized for power saving (smaller scan window, longer period). This parameter adaptation resolves the technical contradiction.

The patent resolves this contradiction by introducing dynamic parameter adjustment based on link loss duration. The system monitors the duration of link loss and automatically selects appropriate scan window sizes and scanning periods from predefined sets. This adds minimal complexity (duration monitoring and parameter selection) while significantly improving reconnection efficiency for varying link loss scenarios.

The patent applies preliminary action by pre-defining multiple sets of scan parameters (first scan window size/period and second scan window size/period) before link loss occurs. When link loss is detected, the system immediately switches to the appropriate pre-configured parameters based on duration thresholds, avoiding complex real-time calculations and enabling efficient adaptation to different link loss scenarios.