Wireless Timing Synchronization via Data Processing Calibration
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Solution Overview
Problem
In wireless communication systems, especially those using WiFi technology for indoor positioning, achieving timing synchronization between apparatuses is challenging due to differences in their internal clock signals, which can lead to asynchronous operations and failure in performing ranging communication at the correct time.
Innovation Solution
A wireless communication system and method that includes an initializing station apparatus and a responding station apparatus, where the system calculates the initial data processing time for each apparatus to process a communication packet's data field. The responding station apparatus transmits its processing time to the initializing station, allowing the initializing station to calibrate its built-in timing to be synchronous with the responding station's timing based on the calculated time difference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different apparatuses operate according to different built-in timing sources, then each apparatus can independently function, but timing synchronization between apparatuses deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the initializing station apparatus measures the actual data processing time of communication packets and feeds back timing adjustment information to the responding station apparatus. This feedback loop enables the responding station to adjust its built-in timing based on actual performance data, achieving synchronization while maintaining independent operation of each apparatus.
2Device complexity
If timing calibration is not performed, then device complexity remains low, but ranging communication accuracy deteriorates
Solution Approach 1:
The patent applies preliminary action by performing timing calibration before ranging communication operations. The initializing station apparatus calculates the data processing time in advance and uses this pre-calculated information to adjust the responding station's timing, ensuring accurate ranging communication without adding complex real-time synchronization mechanisms.
3Ease of operation
If data processing time is not measured and compensated, then operation simplicity is maintained, but timing synchronization accuracy deteriorates
Solution Approach 1:
The patent implements self-service by enabling the apparatuses to automatically measure their own data processing times and perform timing adjustments without external intervention. The initializing station apparatus autonomously calculates processing times and generates calibration information, while the responding station automatically adjusts its timing based on received calibration data, maintaining operational simplicity while achieving high accuracy.
Data Source
AI summary
The present disclosure discloses a wireless communication system. A responding station apparatus and an initializing station apparatus perform transmission behavior corresponding to a communication packet. The initializing station apparatus, according to the transmission behavior, calculates an initializing station initial data processing time that an initializing station physical layer processes a data field of the communication packet. The responding station apparatus, according to the transmission behavior, calculates a responding station initial data processing time that a responding station physical layer processes the data field of the communication packet. The responses station apparatus transmits the responding station initial data processing time to the initializing station apparatus such that the initializing station apparatus calibrates an initializing station built-in timing to be synchronous with a responses station built-in timing according to a time difference between the initializing station initial data processing time and the responding station initial data processing time.