MU-ONT Reverse Powering via Aggregated PoE Lines
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Solution Overview
Problem
Conventional Multi-Unit Optical Network Terminals (MU-ONTs) face challenges in accessing a power source for operation, as external power sources are often unavailable, costly, or prohibited by regulations, making it difficult to power these units without third-party intervention.
Innovation Solution
A reverse powering device utilizing Power over Ethernet (PoE) lines to supply power to MU-ONTs from within the building, aggregating and distributing power from multiple PoE lines to the MU-ONT, while also transmitting data signals, eliminating the need for external power sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external power sources are used to power MU-ONTs, then the MU-ONTs can operate reliably, but installation costs increase and regulatory barriers arise
Solution Approach 1:
The MU-ONT system powers itself by harvesting electrical energy from the PoE data cables that are already connected to it. The device converts the electrical signals from the network cable into usable power, eliminating the need for separate external power sources and third-party electrician installation.
Solution Approach 2:
The PoE data cable serves dual functions: transmitting data signals and providing electrical power for the MU-ONT operation. This multi-functionality consolidates what would traditionally require separate power and data infrastructure into a single cable system.
2Use of energy by stationary object
If external power sources are brought to MU-ONT locations, then power supply is ensured, but installation time and cost increase due to third-party electrician requirements
Solution Approach 1:
The MU-ONT autonomously generates its own power supply by converting electrical energy from the connected PoE data cable. This self-powering capability eliminates the need for external electrician intervention and lengthy electrical wiring installation processes.
Solution Approach 2:
The power delivery infrastructure is pre-established through the PoE data cable connection that is already in place for network communication. The power capability is prepared in advance within the cable system, requiring no additional installation steps when the MU-ONT is deployed.
3Reliability
If traditional power wiring is installed for MU-ONTs, then reliable power is provided, but device complexity and installation requirements increase
Solution Approach 1:
The PoE data cable is designed to perform both data transmission and power delivery functions simultaneously. This universal cable replaces the need for separate power wiring infrastructure, reducing overall system complexity while maintaining reliable power supply.
Solution Approach 2:
The power delivery function is merged with the existing data communication cable system. By combining power and data transmission into a single PoE infrastructure, the installation complexity is reduced while ensuring reliable power delivery to the MU-ONT.
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
Enables MU-ONTs to operate independently within buildings without external power, reducing installation costs and regulatory barriers by utilizing existing infrastructure for both power and data transmission.
Implementation Method 1
A reverse powering device utilizing Power over Ethernet (PoE) lines to supply power to MU-ONTs from within the building
Data Source
AI summary
Techniques for powering a multi-unit optical network terminal (MU-ONT) located outside of a multi-unit building include obtaining reverse power from Power-over-Ethernet (POE) lines connecting the MU-ONT to terminal units (TUs) or customer premises equipments (CPEs) disposed inside the building. Reverse power may be injected into the PoE lines at the TUs, for example. Via an MU-ONT reverse powering device, the reverse power may be separated from services data provided via the PoE lines, and the services data may be delivered between the TUs and a Passive Optical Network (PON) via the MU-ONT. The reverse power obtained from the PoE lines may be aggregated to provide the MU-ONT with power commensurate with its power load. In some embodiments, the MU-ONT power load may be shared or distributed across PoE lines in a passive or actively controlled manner based on variations in the MU-ONT load and/or respective characteristics of the PoE lines.