Ideal Taps for Reducing Outage Scope in Cable Networks
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Solution Overview
Problem
Conventional coaxial cable networks face inefficiencies and high operational burdens due to high gain amplifiers that add noise, require power, and have limited monitoring capabilities, along with issues like low isolation and return loss, leading to complex design requirements and performance limitations.
Innovation Solution
The implementation of ideal taps with low gain, low noise amplifiers and advanced circuitry for signal processing, including digital-to-analog converters, echo cancellation, and host processors, which provide infinite band pass, isolation, and return loss, enabling efficient signal amplification and remote port management without power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If high gain amplifiers are used in conventional coaxial cable networks, then signal amplification is achieved, but noise is added and power consumption increases
Solution Approach 1:
The patent extracts the amplification function from traditional high-gain amplifiers and distributes it across multiple low-gain amplifiers located at different points in the network (taps and cable modems). Each device provides only the minimal amplification needed for its local segment, eliminating the need for a single high-gain amplifier that generates excessive noise and consumes high power.
Solution Approach 2:
The network amplification function is segmented into multiple distributed low-gain amplifiers rather than using one centralized high-gain amplifier. This segmentation allows each amplifier to operate at lower power levels with lower noise figures, while collectively providing the necessary total gain across the network.
2Ease of operation
If conventional taps are used, then signal distribution is achieved, but isolation and return loss are insufficient leading to signal interference
Solution Approach 1:
The patent changes the electrical parameters of the tap devices by incorporating active circuitry that dynamically adjusts impedance matching and signal routing. This allows the taps to provide both distribution functionality and high isolation/return loss characteristics, preventing signal interference while maintaining ease of operation.
3Power
If conventional amplifiers are used, then signal boosting is achieved, but monitoring and control capabilities are limited
Solution Approach 1:
The patent implements feedback mechanisms where cable modems and taps continuously monitor signal levels, quality metrics, and operational status. This monitoring information is fed back to the CMTS (Cable Modem Termination System), which can then dynamically adjust amplifier gain, equalization parameters, and fault isolation actions to optimize network performance.
Solution Approach 2:
The patent replaces manual monitoring and mechanical adjustment systems with electronic sensing and digital control. Sensors at each network element electronically measure signal parameters and communicate them via data channels, eliminating the need for physical inspection and manual adjustment while providing continuous real-time monitoring capability.
Data Source
AI summary
Systems and methods are provided for reducing outage scope in cable networks with ideal taps. An ideal tap may have a plurality of ports that include at least an input port configured for receiving downstream (DS) signals from and transmitting upstream (US) signals to upstream nodes, an output port configured for transmitting downstream (DS) signals to and receiving upstream (US) signals from downstream nodes, and one or more drop ports for receiving signal from and transmitting signals to customer premise equipment (CPE) in the coaxial network. The ideal tap may further include one or more mitigation components configured for reducing scope of outage in the ideal tap, with the one or more mitigation components configured to, when an outage occurs in the ideal tap, provide or maintain inter-port connectivity within the ideal tap, the inter-port connectivity including at least connectivity between the input port and the output port.