Wireless Device Target Clock Adjustment for Standby Power
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless devices in standby mode experience inaccurate wake-up times to receive packets, leading to excessive power consumption and reduced battery life due to inconsistent internal frequencies and varying transmission frequencies of base stations or access points.
Innovation Solution
A method and wireless device configuration that adjusts the target clock by receiving two consecutive broadcast packets, calculating the time interval, and adjusting the clock frequency based on a target value to synchronize with the transmitter's timing, using a sigma-delta modulation unit to refine the clock synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wireless device wakes up at fixed intervals to receive packets, then the device can maintain network connectivity, but the power consumption becomes excessively large due to inaccurate wake-up timing
Solution Approach 1:
The system measures the actual time interval between consecutive broadcast packets and uses this feedback to adjust the target clock. The processor calculates the time difference between the expected interval and actual interval, then adjusts the target clock accordingly to synchronize with the transmitter's actual timing, reducing unnecessary wake-ups and power consumption
Solution Approach 2:
The system dynamically changes the target clock parameter based on measured time intervals. By adjusting the target clock's timing parameters to match the actual transmitter intervals, the system optimizes wake-up timing and reduces power consumption while maintaining reliable connectivity
2Measurement precision
If the target clock is adjusted frequently to synchronize with transmitter timing, then the synchronization accuracy is improved, but the device complexity increases
Solution Approach 1:
The system performs self-adjustment by automatically measuring its own wake-up timing, calculating the time interval discrepancy, and adjusting the target clock without external intervention. This self-service approach achieves high synchronization accuracy while minimizing the need for complex external control mechanisms
Data Source
AI summary
A method for adjusting a target clock of a wireless device and a wireless device thereof are provided. The method includes receiving two consecutive broadcast packets from a transmitter to obtain time information corresponding to each of the two broadcast packets; obtaining a time interval between the two broadcast packets according to the time information; and adjusting the target clock of the wireless device according to the time interval and a target value, to achieve the effect of automatically adjusting the target clock, the target clock being related to waking of the wireless device from a standby mode.