Headend Auto-Adjustment of Cable Modem Signal Strength

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Solution Overview

Problem

Traditional communication network systems face challenges in maintaining reliable signal quality due to fluctuations in temperature and humidity, leading to reduced user experience and inefficient manual adjustments by technicians.

Innovation Solution

Implementing a system that automatically adjusts signal strength between a headend and cable modems by polling them at regular intervals, determining signal strength, and dynamically adjusting output power to maintain a signal strength threshold, using DOCSIS standards and machine-learned models for prediction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual adjustment of signal strength is performed by technicians, then signal quality can be corrected, but the system requires high maintenance costs and frequent human intervention

Engineering Contradiction:
Improvesignal qualityVSAvoidmaintenance efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The system enables automatic self-adjustment of signal strength through the headend device polling cable modems and autonomously adjusting output power based on received signal strength indicators, eliminating the need for manual technician intervention and achieving self-maintenance of signal quality

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system implements a closed-loop feedback mechanism where the headend device receives signal strength measurements from cable modems, compares them against thresholds, and automatically adjusts output power accordingly, creating a continuous self-regulating control system for signal quality

Inventive Principle:
Principle #23Feedback

2Reliability

If technicians frequently monitor and adjust signal strength, then signal quality improves, but time consumption and operational costs increase

Engineering Contradiction:
Improvesignal qualityVSAvoidtechnician intervention time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The headend device continuously polls cable modems at regular intervals to monitor signal strength and performs real-time automatic adjustments without interruption, ensuring continuous signal quality optimization without requiring periodic manual technician visits

Inventive Principle:
Principle #20Continuity of useful action

Solution Approach 2:

The system autonomously monitors and adjusts signal strength without human intervention, freeing technicians from routine maintenance tasks and eliminating time loss associated with manual monitoring and adjustment operations

Inventive Principle:
Principle #25Self-service

3Reliability

If manual adjustment methods are used, then signal fluctuations can be corrected, but the system lacks timely response to environmental changes

Engineering Contradiction:
Improvesignal stabilityVSAvoidresponse speed
Core Design Contradiction:
ReliabilityVSSpeed

Solution Approach 1:

The system establishes a real-time feedback loop where signal strength is continuously monitored and automatically adjusted in response to environmental changes, enabling rapid response to temperature and humidity fluctuations without manual intervention delays

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The continuous polling and automatic adjustment mechanism ensures uninterrupted monitoring and immediate response to signal quality changes, maintaining signal stability through persistent real-time control rather than periodic manual checks

Inventive Principle:
Principle #20Continuity of useful action

4Productivity

If automatic adjustment systems are implemented, then maintenance costs decrease, but system complexity increases

Engineering Contradiction:
Improvemaintenance efficiencyVSAvoidsystem complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The headend device performs multiple functions including signal transmission, polling cable modems, measuring signal strength, determining adjustments, and executing power adjustments within a single integrated system, reducing overall system complexity while achieving automatic signal quality maintenance

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system combines monitoring, measurement, decision-making, and adjustment functions into a unified automatic control process within the headend device, simplifying the architecture by merging previously separate manual operations into an integrated automated system

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS11489601B2Methods and systems for auto-adjustment of signal quality
Publication Date: 2022.11.01 COX COMMUNICATIONS INC
  • US11489601B2 patent drawing
  • US11489601B2 patent drawing
  • US11489601B2 patent drawing

AI summary

Embodiments of the present disclosure provide methods, systems, apparatuses, and computer program products for auto-adjustment signal quality. A method may include determining one or more cable modem devices configured to communicate with a device via a network. The method may include sending poll requests to the one or more cable modem devices to determine a signal power level associated with each of the one or more cable modem devices. The method may include receiving a first poll response from a first cable modem device. The method may include determining, based on the first poll response, a first signal strength associated with the first cable modem device. The method may include determining that the first signal strength deviates from a signal strength threshold. The method may include determining, based on the determination that the first signal strength deviates from the signal strength threshold, a first adjustment to an output power of the device for the first cable modem device.