Hybrid Reverse Power Feed System for Telecommunications Nodes
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Solution Overview
Problem
In telecommunications systems, relying solely on Reverse Power Feed from customers for remote nodes can lead to uncertainties in power delivery, especially at remote locations with restricted access, and results in unavailability of the node when no customers are connected, causing difficulties in network management and potential service impairment due to uneven power distribution among users.
Innovation Solution
A power management system that selectively uses both forward and reverse power supplies based on availability, allowing customer premises equipment to autonomously control power delivery according to service modes, with the distribution point drawing additional power from a backhaul connection to meet operational requirements, ensuring continuous service and fair power sharing among users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If Reverse Power Feed is used to power remote nodes from customer end, then power delivery efficiency is improved, but power supply reliability deteriorates when no customers are connected
Solution Approach 1:
The patent combines both Reverse Power Feed (RPF) from customer premises equipment and Forward Power Feed (FPF) from the exchange end into a unified power supply system for the distribution point. The power management module dynamically integrates power from both sources, allowing the system to maintain reliable operation by switching between or combining RPF and FPF depending on availability and requirements.
Solution Approach 2:
The system dynamically adjusts power delivery parameters including voltage levels, current distribution, and power allocation ratios between RPF and FPF based on real-time conditions such as customer connection status, power quality measurements, and operational requirements. This enables flexible adaptation to maintain reliability while optimizing efficiency.
2Use of energy by stationary object
If Reverse Power Feed is used, then operational costs are reduced, but network management complexity increases
Solution Approach 1:
The power management system at the distribution point autonomously performs power balancing, quality monitoring, and source selection without requiring complex external management intervention. The system self-adjusts power allocation between RPF and FPF based on locally measured parameters, reducing the burden on network management while maintaining cost efficiency.
Solution Approach 2:
The system continuously monitors power quality, connection status, and operational parameters from both RPF and FPF sources, using this feedback to dynamically adjust power delivery decisions. This closed-loop control simplifies management by enabling automated decision-making based on real-time system state.
3Reliability
If power is drawn from multiple customer connections, then power supply stability is improved, but power distribution fairness deteriorates
Solution Approach 1:
The patent implements differentiated power allocation where each customer connection receives power treatment based on its specific characteristics such as line quality, distance, connection type, and service requirements. The power management module calculates individualized power delivery parameters for each CPE, ensuring fair and appropriate power distribution while maintaining overall supply stability.
Solution Approach 2:
The system dynamically adjusts power distribution ratios to each customer connection based on real-time conditions including power quality measurements, connection status, and operational requirements. This dynamic allocation ensures stability is maintained while fairness is preserved through adaptive, condition-based power sharing.
4Reliability
If Forward Power Feed is used from exchange end, then power supply reliability is improved, but energy losses increase
Solution Approach 1:
The system merges FPF from the exchange end with RPF from customer premises equipment, creating a hybrid power supply architecture. This combination allows the system to leverage the reliability of FPF while compensating for its energy losses by incorporating locally-generated RPF, thereby reducing total energy loss while maintaining supply reliability.
Solution Approach 2:
The power management module dynamically adjusts the proportion of power drawn from FPF versus RPF based on real-time measurements of power quality, connection status, and energy efficiency metrics. This parameter adjustment optimizes the balance between reliability and energy loss reduction.
Data Source
AI summary
A the network-side distribution point in a telecommunications network includes an input measurement function which monitors the total power delivered to the power combiner from the various customer premises, and an output measurement function which monitors the total power requirements of the components of the distribution point. The data from these monitoring functions are used by a power extraction control unit to control the combiner/extraction unit to draw power from the forward power feed to makes up any shortfall in the power required to operate the components. This allows each customer premises system to deliver power to the distribution point at a rate determined only by the services it is itself using, and without any need for co-ordination between the distribution point and the customer premises systems.