Power Management for Distributed Communication Remote Units
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In distributed communication systems, remote units (RUs) often face power management challenges due to exceeding power requirements, leading to shutdowns or operational disturbances, as the available power at the RUs may be insufficient or lost during transmission, and incorrect power settings or malfunctions can occur.
Innovation Solution
The implementation of a power management system that measures voltage and current using a Power over Ethernet (PoE) integrated circuit (IC) and a control system to calculate the available power by employing dummy loads, allowing for the calculation of maximum power and comparison with the RU's power requirements, and taking remedial actions such as prioritizing services or generating alarms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If power is provided to remote units over transmission medium, then remote units can operate, but power is lost during transmission and may be insufficient at the destination
Solution Approach 1:
The system measures voltage and current at the remote unit using a PoE IC, calculates available power based on these measurements, and feeds this information back to the head-end equipment. This feedback loop enables the system to compensate for transmission losses by adjusting power delivery parameters based on actual conditions at the remote unit.
Solution Approach 2:
The patent replaces direct physical measurement of power at the head-end with electrical measurement at the remote unit. By using a PoE IC to measure voltage and current locally at the remote unit and transmitting these electrical signals back for power calculation, the system substitutes a remote measurement approach for direct local measurement.
2Reliability
If power is increased to meet remote unit requirements, then operational reliability improves, but transmission losses increase and more power is wasted
Solution Approach 1:
The system dynamically adjusts power delivery based on real-time measurements of voltage and current at the remote unit. Rather than providing fixed or excessive power, the system calculates actual available power and adjusts delivery parameters dynamically to meet remote unit requirements while minimizing transmission losses.
Solution Approach 2:
The system changes power delivery parameters (voltage, current) based on measured conditions at the remote unit. By calculating available power from voltage and current measurements and adjusting delivery parameters accordingly, the system optimizes power transmission to provide sufficient power while minimizing losses.
3Reliability
If power management monitoring is implemented, then operational disturbances are prevented, but system complexity increases
Solution Approach 1:
The PoE IC performs multiple functions: it measures voltage and current, calculates available power, and provides this information to the control system. By consolidating these power management functions into a single integrated circuit, the system prevents operational disturbances while minimizing the increase in overall system complexity.
Solution Approach 2:
The remote unit performs self-diagnosis of its power conditions by measuring voltage and current locally and calculating available power. This self-service approach enables the system to detect and prevent power-related operational disturbances without requiring complex external monitoring infrastructure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures reliable operation of RUs by accurately determining available power and taking corrective measures to prevent shutdowns or disturbances, ensuring continuous service and efficient power utilization.
Implementation Method 1
a power over Ethernet integrated circuit (POE IC) configured to measure voltage and current from the power input
Data Source
AI summary
Power management techniques in distributed communication systems in which the power available at a remote unit (RU) is measured and compared to the power requirements of the RU. Voltage and current are measured for two dummy loads at the RU and these values are used to solve for the output voltage of the power supply and the resistance of the wires. From these values, a maximum power available may be calculated and compared to power requirements of the RU.