Cable Modem Diagnostic Analyzer for Remote Noise Localization
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Solution Overview
Problem
Current communication systems face challenges in efficiently diagnosing and characterizing noise sources and component issues, leading to suboptimal performance and requiring labor-intensive on-site analysis, which is costly and time-consuming.
Innovation Solution
The implementation of a diagnostic analyzer within communication devices that can sample and process upstream communication channels to generate frequency spectra and integrated power histograms, allowing for remote detection of noise and performance characterization, and transmitting this data for proactive network maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If service personnel conduct on-site analysis at customer locations, then noise sources and component issues can be directly diagnosed, but the process becomes labor-intensive and time-consuming
Solution Approach 1:
The patent implements remote copying of noise characteristics by capturing audio signals at the customer premises and transmitting them to a centralized noise characterization system. This allows service personnel to diagnose noise issues remotely without traveling to the site, thereby reducing service response time while maintaining diagnostic accuracy through faithful reproduction of the original noise environment
Solution Approach 2:
The patent introduces a centralized noise characterization server as an intermediary between field devices and service personnel. This intermediary receives, stores, and processes noise data from multiple locations, enabling remote analysis and eliminating the need for service personnel to physically visit each noise complaint location, thus reducing time loss while preserving measurement precision
2Reliability
If service personnel analyze multiple locations sequentially, then comprehensive system performance can be assessed, but the process becomes labor and cost intensive
Solution Approach 1:
The patent merges multiple noise measurement locations into a single centralized analysis platform. Noise data from numerous customer premises are collected and aggregated at a central server, allowing comprehensive system performance assessment to be conducted in one location rather than requiring service personnel to visit each site sequentially, thereby improving productivity while maintaining reliability
Solution Approach 2:
The centralized noise characterization server provides universal functionality to analyze noise data from multiple locations and various noise sources. This multi-functional system can characterize different types of noise (hiss, crackle, burst noise) from different equipment (set-top boxes, cable modems, amplifiers) through a single platform, enhancing service efficiency while ensuring comprehensive system assessment
3Measurement precision
If detailed noise characterization is performed at each customer location, then accurate noise sources can be identified, but the complexity and cost of service operations increase
Solution Approach 1:
The patent extracts the complex noise analysis functionality from individual field devices and relocates it to a centralized server. Simple audio capture devices at customer locations record noise characteristics, while the computationally intensive noise source identification and characterization algorithms run remotely on the centralized platform, reducing device complexity at the premises while maintaining accurate noise source identification
Solution Approach 2:
The patent creates digital copies of noise signals for analysis rather than requiring complex physical measurement equipment at each location. The captured audio signals are copied and transmitted to the centralized characterization system, which performs detailed analysis through signal processing algorithms, thereby identifying noise sources accurately without increasing field device complexity or service operation complexity
Data Source
AI summary
A communication device (e.g., a cable modem (CM)) includes a digital to analog converter (DAC) and a power amplifier (PA) that generate a signal to be transmitting via a communication interface to another communication device (e.g., cable modem termination system (CMTS)). The CM includes diagnostic analyzer that samples the signal based on a fullband sample capture corresponding to a full bandwidth and/or a subset (e.g., narrowband) sample capture to generate a fullband and/or subset signal capture (e.g., of an upstream (US) communication channel between the CM and the CMTS). The diagnostic analyzer can be configured to generate sample captures of the signal based on any desired parameter(s), condition(s), and/or trigger(s). The CM then transmits the signal to the CMTS and the fullband and/or subset signal capture to the CMTS and/or a proactive network maintenance (PNM) communication device to determine at least one characteristic associated with performance of the US communication channel.