Transmission Rate Control via Mobility-Aware Fail Ratio Filtering
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Solution Overview
Problem
In mobile scenarios, the dynamic wireless channel conditions often lead to a mismatch between the physical layer modulation scheme and transmission rate, resulting in frequent media access control layer frame retransmissions, which negatively affect throughput performance and device energy efficiency.
Innovation Solution
A computing device modifies its transmission rate by disabling rate options with a fail ratio above a predetermined threshold, leveraging mobility information to improve system performance and user experience, using a rate control driver and module that gather fail ratio metrics and adjust transmission rates based on sensor data indicating movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the device uses high transmission rates in mobile scenarios, then throughput performance may be improved under good channel conditions, but frame retransmissions increase frequently due to channel dynamics
Solution Approach 1:
The patent implements dynamic transmission rate selection by continuously monitoring channel conditions and adjusting the modulation scheme and transmission rate accordingly. The rate control module dynamically switches between different rate options based on real-time feedback, allowing the system to adapt to changing wireless channel conditions in mobile scenarios, thereby maintaining both high throughput when conditions are good and reliable transmission when conditions deteriorate.
Solution Approach 2:
The patent employs feedback mechanisms where the rate control module receives information about transmission success/failure and channel quality, then uses this feedback to adjust future transmission rate selections. This closed-loop control ensures that the system learns from past transmission outcomes and optimizes rate selection to balance throughput performance with transmission reliability.
2Reliability
If the device monitors and adjusts transmission rates in real-time, then transmission reliability improves, but device energy consumption increases
Solution Approach 1:
The patent applies partial monitoring and adjustment actions by not continuously monitoring all parameters at maximum intensity. Instead, the rate control module selectively monitors channel conditions and adjusts rates based on predefined thresholds and triggers, performing sufficient monitoring to maintain reliability while avoiding excessive energy consumption associated with constant full-scale monitoring and adjustment.
Solution Approach 2:
The patent changes operational parameters dynamically by adjusting transmission rates and modulation schemes based on channel conditions rather than maintaining fixed high-rate settings. This allows the system to achieve reliable transmission at lower energy consumption levels when channel conditions warrant reduced rates, while only consuming higher energy when necessary to maintain high throughput.
3Use of energy by moving object
If the device disables rate options with high fail ratios, then energy efficiency improves, but adaptability to changing channel conditions decreases
Solution Approach 1:
The patent implements preliminary actions by pre-evaluating and disabling rate options that have demonstrated high fail ratios in current channel conditions before attempting transmission. The rate control module proactively identifies and eliminates poor rate options based on historical performance data and current channel assessments, preventing energy-wasting transmissions on doomed channels while maintaining the ability to quickly adapt when conditions change.
Solution Approach 2:
The patent maintains adaptability through dynamic rate option management where the set of available rate options is not fixed but continuously updated based on changing channel conditions. When channel conditions improve or deteriorate, the rate control module dynamically adds or removes rate options from the available set, ensuring both energy efficiency (by disabling consistently poor options) and adaptability (by enabling new options when conditions change).
Data Source
AI summary
Techniques for modifying a transmission rate of a device having a plurality of transmission rate options are described herein. The techniques include a method comprising receiving data from a sensor indicating movement of an electronic device, the electronic device having a plurality of transmission rate options. Fail ratio metrics are gathered. The fail ratio metrics indicate a ratio of failed transmissions to successful transmissions for rate option during device movement. The method includes determining whether a given rate option has a fail ratio above a predetermined threshold; and, if so, disabling the given rate option while the device is moving.