Wireless Device Propagation Time Calculation via Internal Delay Compensation
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Solution Overview
Problem
Accurate measurement of signal propagation times between wireless communication devices is hindered by internal signal transfer delays, which need to be accounted for to improve ranging precision.
Innovation Solution
A wireless communication device system that includes control sections in both devices to calculate and account for fixed and internal delay times when transmitting and receiving signals, allowing for precise timing adjustments to determine propagation times and ranging values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If internal transfer delay time is not considered, then calculation process is simpler, but propagation time measurement precision deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-measuring and storing the internal transfer delay time in a register before actual propagation time measurement. The control section reads this pre-stored delay value and subtracts it from the measured time, eliminating the need for complex real-time calculations and achieving precise propagation time measurement with simple arithmetic operations.
2Measurement precision
If fixed time is not used for timing control, then timing flexibility is higher, but timing accuracy deteriorates
Solution Approach 1:
The patent applies parameter changes by using a fixed time parameter stored in a register to control the timing of second signal transmission. This fixed time parameter is predetermined and stored, allowing the system to achieve consistent and accurate timing control while maintaining the ability to adapt to different communication scenarios by changing the stored parameter value without modifying the control logic.
Data Source
AI summary
To calculate the propagation times of signals transmitted and received between the devices more easily and accurately.There is provided a wireless communication device comprising a control section configured to control transmission and reception of a wireless signal by an antenna in conformity with a designated communication standard, wherein the control section controls a timing of causing the antenna to transmit a second signal in response to a first signal received by the antenna, on a basis of fixed time and delay time related to internal transfer in the wireless communication device, the fixed time being decided in advance.