Subscriber Line Power Allocation Optimization
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Solution Overview
Problem
Conventional PSTN access systems inefficiently manage power consumption due to uniform power feeding across all telephony lines, leading to excessive energy waste, especially in on-hook and off-hook states, as they are not optimized for varying line lengths, resulting in high operational expenses and environmental impact.
Innovation Solution
A method and system for optimizing power allocation in access networks by studying and grouping subscriber lines based on their real power consumption, recommending specific voltage ranges for each line category, and adjusting SLIC configurations to minimize power usage, including determining optimal Vbat and Ringing voltage values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If uniform power feeding is used for all telephony lines, then network simplicity and ease of operation are maintained, but power consumption efficiency deteriorates significantly
Solution Approach 1:
The patent applies local quality by tailoring power feeding characteristics to specific line categories based on their actual requirements. Different voltage ranges (e.g., -48V for long lines, -36V for short lines) are provided according to line length and load characteristics, ensuring optimal power efficiency for each local condition while maintaining overall system simplicity through automated classification.
Solution Approach 2:
The system dynamically changes power parameters (voltage range, current limits) based on line category classification. By adjusting these parameters according to actual line requirements rather than using fixed uniform parameters, the system achieves significant power savings while maintaining operational simplicity through automated parameter adaptation.
2Reliability
If powerful monopolies implement total network control with conservative basic implementations, then service reliability is ensured, but power consumption efficiency deteriorates
Solution Approach 1:
The system introduces dynamic power management that adapts to actual line conditions rather than relying on static conservative implementations. Power parameters are continuously adjusted based on measured line characteristics and usage patterns, enabling the network to maintain reliability while significantly reducing power consumption through adaptive rather than fixed power delivery.
Solution Approach 2:
The patent implements feedback mechanisms where power consumption data and line status information are continuously monitored and used to optimize power delivery. This feedback loop enables the system to maintain service reliability while adjusting power parameters in real-time to eliminate waste, replacing the old conservative fixed approach with an intelligent adaptive system.
3Ease of manufacture
If constant-current mode is used in SLIC designs, then ease of manufacture is maintained, but power consumption efficiency deteriorates
Solution Approach 1:
The patent segments the power delivery system into category-specific channels rather than using a single constant-current mode for all lines. By dividing the service into distinct line categories (long lines, short lines, medium lines) with dedicated power parameters, the system maintains manufacturing simplicity for each segment while achieving overall power efficiency through targeted power delivery to each segment.
Data Source
AI summary
Technique is proposed for managing total power consumption in an access network comprising two or more interface modules serving a plurality of subscriber lines, the technique comprises performing a study of real power consumption of the subscriber lines in the access network on a line-to-line basis, correlating results of the study with inventory information concerning allocation of the subscriber lines to the interface modules and power consumption ensured by said modules to the lines and, based on the correlation, assessing optimality of allocation of the subscriber lines to the interface modules.