Dynamic Interleave Depth Control for Low-Latency Cable Data Transmission
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Solution Overview
Problem
Current data transmission systems face inefficiencies due to statically set interleave depths, which can result in increased latency for devices with minimal noise interference and unacceptably high unrecoverable packets for devices with burst noise, as these settings are not optimized for individual or group performance.
Innovation Solution
Implementing a dynamic interleave depth adjustment system where a centralized network control system monitors performance and adjusts interleave depths for individual devices or groups based on noise interference, allowing for varying interleave depths to optimize data transmission efficiency and reduce latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If higher interleave depths are used, then data loss due to burst noise is reduced, but latency increases for all devices
Solution Approach 1:
The patent applies local quality by assigning different interleave depths to different cable modems based on their specific noise conditions. The CMTS monitors performance metrics for each individual cable modem and configures optimal interleave depth parameters specifically for each device, rather than using a uniform setting across the entire network. This allows devices in noisy environments to receive higher interleave depths for better error protection, while devices in cleaner environments maintain lower interleave depths for reduced latency.
Solution Approach 2:
The patent implements dynamics by making interleave depth configurations adjustable and adaptable over time. The CMTS continuously monitors performance metrics such as signal-to-noise ratio and error rates, then dynamically adjusts the interleave depth parameters for each cable modem based on changing channel conditions. This dynamic adjustment allows the system to optimize the balance between error protection and latency as noise conditions vary.
2Loss of time
If lower interleave depths are used, then latency is reduced, but unrecoverable packets due to burst noise increase
Solution Approach 1:
The patent applies local quality by assigning different interleave depths to different cable modems based on their specific noise conditions. The CMTS monitors performance metrics for each individual cable modem and configures optimal interleave depth parameters specifically for each device, rather than using a uniform setting across the entire network. This allows devices in noisy environments to receive higher interleave depths for better error protection, while devices in cleaner environments maintain lower interleave depths for reduced latency.
Solution Approach 2:
The patent implements dynamics by making interleave depth configurations adjustable and adaptable over time. The CMTS continuously monitors performance metrics such as signal-to-noise ratio and error rates, then dynamically adjusts the interleave depth parameters for each cable modem based on changing channel conditions. This dynamic adjustment allows the system to optimize the balance between error protection and latency as noise conditions vary.
3Device complexity
If statically set interleave depth is used for all devices, then network configuration is simplified, but performance is not optimized for individual devices
Solution Approach 1:
The patent applies self-service by enabling the CMTS to automatically monitor performance metrics and adjust interleave depth parameters for each cable modem without requiring manual configuration. The system self-configures optimal parameters by analyzing performance data such as signal-to-noise ratio, error rates, and traffic patterns, then dynamically adjusts settings accordingly. This automated approach maintains operational simplicity while achieving device-specific optimization.
Solution Approach 2:
The patent implements feedback mechanisms where the CMTS continuously monitors performance metrics from each cable modem and uses this information to adjust interleave depth parameters. The system collects feedback on transmission quality, error rates, and channel conditions, then uses this feedback to dynamically optimize the interleave depth configuration for each device, creating a closed-loop control system that automatically adapts to changing conditions.
Data Source
AI summary
In cable modem termination systems (CMTS) and other information transmission systems, a method for changing the interleave depth associated with each data stream is provided. This may be done dynamically, and for any subset of downstream devices such as modems. The interleave depth may be set on an individual device level. Embodiments may decrease data receiving latency on devices that do not suffer from error rates, such as caused by burst noise, while maintaining throughput on devices with high error rates.