Cascade Device Power Extension for Wireless Radio Systems
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Solution Overview
Problem
Current wireless communication network solutions are limited in range, with radio devices able to receive power only up to 200 meters from the radio controller, restricting the coverage of wireless radio systems.
Innovation Solution
The introduction of a cascade device that negotiates power allocation between the radio controller and radio device, allowing power to be extended up to 400 meters or more by amplifying and relaying power over Ethernet cables, while maintaining compliance with IEEE PoE standards, and enabling additional cascade devices to further extend the range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If power is transmitted over Ethernet cable to radio device, then radio device can be powered and communicate wirelessly, but the distance is limited to 200 meters maximum
Solution Approach 1:
A cascade device is introduced as an intermediary between the radio controller and the radio device. This cascade device receives power over Ethernet from the radio controller, converts it to a higher voltage form, and re-transmits it further down the cable, enabling power delivery beyond the standard 200-meter limit while maintaining compliance with IEEE PoE standards at each segment.
2Power
If IEEE 802.3af PoE standard is used, then power can be delivered up to 200 meters, but the maximum output power is limited to 15.40 Watts
Solution Approach 1:
The cascade device changes the voltage parameter of the power signal. It receives the standard 48V PoE power, converts it to a higher voltage (such as 90V or higher), and transmits it further. This parameter transformation allows the system to overcome both the distance limitation and the power limitation of the original IEEE 802.3af standard while still using Ethernet cabling.
3Area of stationary object
If additional radio controllers are installed to extend coverage, then more radio devices can be supported, but system complexity and cost increase
Solution Approach 1:
The cascade device is designed to be multi-functional: it acts as a power extender, a signal regenerator, and a PoE compliance interface all in one device. This single device can extend coverage to multiple radio devices without requiring additional radio controllers, thereby reducing system complexity while maintaining universal compatibility with existing PoE infrastructure.
Data Source
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AI summary
A method and system for extending the range and coverage of wireless radio systems through the introduction of cascade devices are disclosed. In some embodiments, power allocations from a first power sourcing equipment (PSE) to a radio device are negotiated by an intervening cascade device. Also, OAM configurations of a radio controller are extended to radio devices via the intervening cascade device.