Radio-Frequency Pathloss Calibration with Partial External Measurements
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing radio-frequency communication devices require numerous external measurements to obtain pathloss values across various frequency bands and power gears, making it difficult to reduce measurement time and instrument requirements.
Innovation Solution
A pathloss calibration method that defines conditions based on frequency bands and power gears, uses an external test device to measure base and anchor pathloss values, and employs an internal test-tone circuit to derive offset values, allowing for the generation of calibrated anchor pathloss values without measuring all conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If external instruments are used to measure all anchor pathloss values under m×n conditions, then measurement completeness is improved, but measurement time and instrument requirements increase
Solution Approach 1:
The patent applies partial action by measuring only a subset of anchor pathloss values (y values out of m×n total conditions) rather than all conditions. The measured values are then used to calculate offset values that compensate for unmeasured conditions, achieving acceptable measurement completeness with reduced measurement time and instrument requirements.
2Measurement precision
If external instruments are used to measure all anchor pathloss values, then measurement accuracy is improved, but device complexity and instrument requirements increase
Solution Approach 1:
The patent enables the radio-frequency communication device to perform self-calibration by measuring only base pathloss values and using them to calculate offset values. This self-service approach reduces dependence on external measurement instruments for all conditions, thereby reducing device complexity and instrument requirements while maintaining acceptable accuracy through the offset compensation mechanism.
3Reliability
If all anchor pathloss values are measured externally, then calibration reliability is improved, but testing cost and time increase
Solution Approach 1:
The patent performs preliminary measurement of base pathloss values under all m×n conditions to establish a foundation for calculating offset values. This preliminary action allows the system to derive accurate anchor pathloss values for unmeasured conditions through mathematical calculation, thereby maintaining calibration reliability while significantly improving testing efficiency by avoiding exhaustive external measurements.
Data Source
AI summary
A pathloss calibration method used for a radio-frequency communication device can include defining m×n conditions according to m frequency bands and n power gears, obtaining x base pathloss values under x conditions of the m×n conditions on a first route of the radio-frequency communication device, obtaining y anchor pathloss values under y conditions of the m×n conditions on a second route of the radio-frequency communication device, generating y offset values according to the y anchor pathloss values and y base pathloss values of the x base pathloss values where the y base pathloss values are obtained under the y conditions, and generating z anchor pathloss values on the second route according to the y offset values and the x base pathloss values.