Dynamic Data Unit Sizing for DSL Throughput Optimization
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Solution Overview
Problem
DSL communication systems face inefficiencies due to conservative initial data unit size estimates based on roundtrip time delays, leading to performance limitations and increased error rates, as they cannot accurately measure roundtrip time delays before transmission, resulting in suboptimal data throughput.
Innovation Solution
The system measures roundtrip time delay during data transmission and dynamically adjusts the data unit size based on the measured delay, allowing for a more efficient data transfer by increasing the data unit size to account for overly conservative initial estimates, thereby optimizing throughput and reducing errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system uses conservative initial data unit size estimates based on estimated roundtrip time delay, then the system ensures reliable data transmission, but the data throughput is limited and suboptimal
Solution Approach 1:
The patent implements dynamic adjustment of data unit size based on measured roundtrip time delay. The system transitions from static conservative estimates to dynamic sizing where the data unit size is continuously adapted based on actual measured performance, allowing the system to optimize throughput while maintaining reliability through feedback-driven adjustments.
Solution Approach 2:
The system introduces feedback mechanisms where the measured roundtrip time delay is used to adjust subsequent data unit size decisions. The feedback loop continuously monitors actual transmission performance and uses this information to optimize data unit size, resolving the contradiction between conservative reliability-based sizing and optimal throughput.
2Ease of operation
If the system uses estimated roundtrip time delay before transmission, then the system can determine initial data unit size, but the estimate is inaccurate leading to suboptimal performance
Solution Approach 1:
The system performs preliminary measurement of the actual roundtrip time delay by transmitting test data units and measuring the time to receive acknowledgments. This preliminary action provides accurate measurement data that is used to determine optimal data unit size before actual data transmission begins, eliminating the need for inaccurate theoretical estimates.
Solution Approach 2:
The patent replaces theoretical estimation methods with actual physical measurement. Instead of calculating roundtrip time based on model assumptions, the system directly measures the roundtrip delay through actual signal transmission and acknowledgment reception, providing precise empirical data for optimization.
3Productivity
If the system increases data unit size to improve throughput, then the data transfer efficiency increases, but the error rate increases due to overly conservative initial estimates
Solution Approach 1:
The system uses feedback from measured roundtrip time delay to dynamically adjust data unit size. By continuously monitoring actual transmission conditions and adjusting size accordingly, the system achieves optimal throughput without excessive error rates, as the size adjustments are based on real performance data rather than conservative estimates.
Solution Approach 2:
The patent implements parameter changes by adjusting data unit size based on measured roundtrip delay characteristics. The system modifies the size parameter dynamically to match actual transmission conditions, achieving high throughput while maintaining low error rates through adaptive parameter optimization rather than fixed conservative values.
Data Source
AI summary
The present disclosure relates generally to communication systems and more particularly to Digital Subscriber Line (DSL) and wireless communication systems. One embodiment relates to a method of processing data in a communication system. In this method, a data stream is received by a transmitter and packaged into discrete data units prior to transmission. The size of a data unit depends upon the details of the embodiment, and is estimated by communication system prior to data transmission. Once a data unit is transmitted from the transmitter to the receiver, the receiver sends an acknowledgement that the data unit is received. Knowledge of the roundtrip time delay between transmission of the data unit and reception of the acknowledgement allows the communication system to determine an optimum data unit size to maximize throughput. Other methods and systems are also disclosed.