Dynamic Statistical Period Adjustment for Wireless Rate Adaptation
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Solution Overview
Problem
Conventional wireless communications systems face performance reduction due to packet collisions and increased packet error rates (PER) caused by interference, where rate adaptation mechanisms can inadvertently worsen the situation by reducing data rates, leading to longer packets and higher collision probabilities.
Innovation Solution
A method and apparatus for dynamic statistical period adjustment in rate adaptation, which involves collecting transmission results for parallel processing, calculating variance, and selectively adjusting statistical periods to optimize transmission efficiency, thereby reducing re-transmissions and PER.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the data rate is reduced to lower packet error rate, then transmission reliability is improved, but packet length increases leading to higher collision probability
Solution Approach 1:
The patent implements dynamic statistical period adjustment in rate adaptation, where the statistical period threshold is not fixed but dynamically adjusted based on monitored transmission results and calculated variance. This allows the system to adapt the rate adaptation frequency to current channel conditions, resolving the contradiction by making the rate reduction less frequent and more targeted, thereby reducing collisions while maintaining reliability.
Solution Approach 2:
The patent changes the parameter of statistical period threshold from a static value to a dynamically adjusted value based on transmission statistics and variance calculation. By adjusting this parameter according to actual channel conditions, the system optimizes the balance between reducing packet error rate and minimizing collision probability.
2Productivity
If rate adaptation is performed frequently to respond to channel changes, then transmission efficiency is improved, but system complexity and processing overhead increase
Solution Approach 1:
The patent applies partial action by performing rate adaptation only when statistically significant changes are detected, rather than continuously or excessively frequently. The variance calculation and statistical period threshold mechanism filter out minor fluctuations, triggering rate adaptation only when necessary, thus maintaining transmission efficiency while reducing unnecessary processing overhead.
Solution Approach 2:
The patent implements feedback through continuous monitoring of transmission results and dynamic adjustment of statistical period threshold based on calculated variance. This feedback mechanism allows the system to automatically adjust the frequency of rate adaptation to match actual channel conditions, optimizing transmission efficiency while avoiding excessive processing when conditions are stable.
Data Source
AI summary
A method and apparatus for performing dynamic statistical period adjustment regarding rate adaption (RA) are provided. The method includes: collecting respective transmission results of multiple data packets to perform parallel processing, where the parallel processing includes statistical period control and RA control. The statistical period control includes: determining whether a first loop index reaches a monitored period threshold; performing first transmitting (TX) information statistics; calculating variance of TX information statistics results; and selectively adjusting a statistical period threshold. The RA control includes: determining whether a second loop index reaches the statistical period threshold; performing second TX information statistics; and performing the RA. The statistical period control may dynamically adjust the statistical period of the RA control, to enhance transmission efficiency of the wireless communications device.