Wireless Controller Latency Compensation for Time-Sensitive Controls
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Solution Overview
Problem
Signal latency in wireless connections between devices, particularly affecting time-sensitive operations, is caused by factors such as distance, environmental conditions, and noise, leading to delayed processing of control activations.
Innovation Solution
A method and system for detecting and mitigating signal latency by measuring the time interval between control activation and its receipt, using detection processes to derive a latency value, and executing mitigation processes to adjust operations accordingly, such as processing controls at the time of activation rather than receipt.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless communication is used to connect devices, then ease of operation and device portability are improved, but signal latency increases affecting time-sensitive operations
Solution Approach 1:
The system performs preliminary measurement of signal latency between the computing device and wireless device, then uses this pre-acquired latency information to compensate for timing delays in subsequent operations. By measuring the latency once and reusing this value, the system prepares in advance to correct timing issues without adding continuous overhead.
Solution Approach 2:
The system changes the time parameter by which control activations are processed. Instead of processing inputs at their actual receipt time, the system adjusts the processing time by subtracting the measured latency value, effectively shifting the processing timestamp to compensate for wireless transmission delays.
2Reliability
If signal latency compensation is implemented, then time-sensitive operations are improved, but device complexity increases
Solution Approach 1:
The system implements feedback by measuring the actual signal latency between devices and using this measured value to adjust the processing timing of control activations. The latency measurement feedback loop allows the system to adapt to actual wireless conditions and compensate for delays dynamically.
Solution Approach 2:
The system creates a virtual copy of the control activation timestamp that is adjusted by the latency value. Instead of directly using the actual receipt time, it generates a compensated timestamp that represents when the control activation effectively occurred, allowing processing to proceed as if latency didn't exist.
Data Source
AI summary
Systems and method are provided for detecting latency in radio frequency connections. A computing device may present a first cue at a first time. In response, the computing device may receive a first input from a wireless device at a second time that indicates that a control of the wireless device associated with the first cue has been activated. The computing device may define a signal latency value based on the first time and the second time. The computing device may then receive a second input from the wireless device that includes an indication of a control activation at a third time. And in response, the computing device may process the control activation if the control activation is received at a fourth time that is prior to the third time. The time interval between the fourth time and the third time can be equal to the signal latency value.