Oscillatory Calibration for Bandwidth-Delay Product

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Solution Overview

Problem

Determining the bandwidth-delay product in dynamic network environments is challenging due to variance in network conditions, making it difficult to ensure optimal data throughput and prevent buffering or underutilization of network capacity.

Innovation Solution

The oscillatory complementary network property calibration technique, which involves adjusting transmission parameters to cause network properties to oscillate between stochastic and deterministic error states, allowing for continuous monitoring and adjustment of network conditions to determine accurate bandwidth-delay product values.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the bitrate of the multimedia stream is increased to utilize full network capacity, then data throughput is improved, but network congestion and buffering occur when the bitrate exceeds the bandwidth-delay product

Engineering Contradiction:
Improvedata throughputVSAvoidnetwork performance stability
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent applies dynamics by continuously adjusting the multimedia stream bitrate in real-time based on oscillatory probing of network conditions. The system dynamically modifies transmission parameters to track changing bandwidth-delay product values, enabling the bitrate to adapt to network capacity fluctuations without causing congestion or buffering.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes the bitrate parameter of the multimedia stream based on measured network properties. By calculating the bandwidth-delay product and adjusting the bitrate accordingly, the system optimizes data throughput while preventing network congestion and performance degradation.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If the bitrate of the multimedia stream is decreased to prevent network congestion, then network performance stability is improved, but network capacity is underutilized

Engineering Contradiction:
Improvenetwork performance stabilityVSAvoiddata throughput
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The system dynamically adjusts the bitrate upward when network conditions permit, using continuous oscillatory probing to detect available capacity. This enables the system to maximize throughput by increasing bitrate to the fullest extent allowed by current network conditions without causing congestion.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The bitrate parameter is continuously modified based on real-time network measurements. The system changes the bitrate to match the measured bandwidth-delay product, ensuring optimal utilization of network capacity while maintaining performance stability.

Inventive Principle:
Principle #35Parameter changes

3Measurement precision

If oscillatory probing is performed frequently to track changing network conditions, then measurement precision of bandwidth-delay product is improved, but network overhead and complexity increase

Engineering Contradiction:
Improvebandwidth-delay product accuracyVSAvoidcalibration system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent employs periodic oscillatory probing at strategically selected intervals to measure network properties. This periodic action balances the need for accurate bandwidth-delay product measurement with the constraints of network overhead and system complexity, achieving precise measurements without excessive probing frequency.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The probing frequency and oscillation parameters are dynamically adjusted based on network conditions and requirements. The system adapts the intensity and frequency of measurements to maintain accuracy while minimizing overhead and complexity.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS11356326B2Continuously calibrated network system
Publication Date: 2022.06.07 AMAZON TECH INC
  • US11356326B2 patent drawing
  • US11356326B2 patent drawing
  • US11356326B2 patent drawing

AI summary

Data is transmitted in accordance with a parameter. For a metric associated with transmission of the data, a response to a stochastic error state of the metric includes making a first adjustment to the parameter in a first direction. A response to a deterministic error state of the metric includes making a second adjustment to the parameter in a second direction, where the second direction is in opposition to the first direction. A transition point between the two states is identified, and a response to the identification is made.