Dynamic Data Rate Adjustment for Signal Quality Transients
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Solution Overview
Problem
Wireline data networks face challenges in maintaining optimal data rates due to transient changes in signal quality caused by varying signaling conditions, leading to unnecessary throttling down of data rates during temporary degradations and failure to adjust back up when conditions improve.
Innovation Solution
The implementation of data rate adjustment techniques and architectures in communication devices, which include detection circuitry to assess signal quality and adjustment processing to dynamically switch data rates based on signal conditions, ensuring robustness by reducing data rates during poor conditions and increasing them when signaling improves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data rate is maintained at high level during transient signal quality degradation, then productivity is improved, but reliability deteriorates due to increased error rates
Solution Approach 1:
The system dynamically adjusts the data rate based on real-time signal quality conditions. During transient degradations, the data rate is temporarily reduced to maintain acceptable error rates, then restored when conditions improve. This dynamic adaptation resolves the contradiction by making data rate flexible rather than fixed, allowing the system to maintain reliability during poor conditions while achieving high productivity during good conditions.
Solution Approach 2:
The invention changes the operating parameter (data rate) in response to changing signal quality conditions. By monitoring signal characteristics and adjusting the data rate parameter accordingly, the system maintains desirable error rates during transient degradations while maximizing throughput during stable conditions, thus resolving the contradiction between productivity and reliability.
2Reliability
If data rate is throttled down during signal quality degradation, then reliability is improved, but productivity deteriorates due to reduced data transmission capacity
Solution Approach 1:
The system implements periodic monitoring of signal quality conditions and adjusts data rate accordingly. During transient degradations, the data rate is temporarily throttled down to maintain reliability, then restored when signal conditions improve. This periodic adjustment strategy resolves the contradiction by applying reliability-focused throttling only when necessary, rather than maintaining reduced data rates continuously.
Solution Approach 2:
The data rate is made dynamic rather than static, allowing the system to throttle down during poor signal conditions to maintain reliability while recovering to higher rates when conditions improve. This dynamic behavior resolves the contradiction by making productivity variable rather than permanently reduced, achieving reliability only when signal conditions warrant it.
3Productivity
If data rate is increased when signaling conditions improve, then productivity is improved, but reliability may deteriorate if adjustment is too rapid
Solution Approach 1:
The system performs preliminary assessment of signal quality conditions before adjusting data rate upward. By monitoring signal characteristics in advance and confirming sustained improvement before increasing data rate, the system avoids premature adjustments that could compromise reliability. This preliminary action ensures that productivity increases are based on stable, verified signal conditions.
Solution Approach 2:
The system continuously monitors signal quality and uses this feedback to control data rate adjustments. By implementing feedback mechanisms that verify signal stability before and during rate increases, the system ensures that productivity improvements do not compromise connection stability. The feedback loop allows the system to detect and respond to conditions that might indicate premature rate increases.
Data Source
AI summary
A system receives an incoming datastream at an incoming data rate or transmits an outgoing datastream at an outgoing data rate. The system may include a detection circuit to monitor the signal quality of the datastream. Responsive to changes in the monitored signal quality, the system may switch the data rate from a first data rate to a new data rate. If signal conditions are favorable, the system may switch to a higher data rate than the first data rate. If signal quality conditions worsen, the system may switch from the first data rate to a lower data rate to allow for a reduction in error rate.