Optical Fiber Power and Data Integration for Remote Antenna Units
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Solution Overview
Problem
Current distributed antenna systems face challenges in efficiently providing both radio frequency (RF) communication services and digital data services over optical fiber, particularly in integrating power distribution with digital data services, which limits the flexibility and efficiency of service delivery in wireless communication networks.
Innovation Solution
The system integrates a power unit that conveys both digital data signals and power signals over electrical links, allowing for the distribution of power to remote antenna units while using the same electrical medium for digital data services, enabling the provision of both RF communication services and digital data services over optical fiber, with the option to inject power from multiple sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate infrastructure is used for power distribution and digital data services, then reliability is improved, but device complexity and installation cost increase
Solution Approach 1:
The patent combines power distribution and digital data services into a single optical fiber infrastructure. The head-end station delivers both power and data over the same optical fiber link to remote antenna units, eliminating the need for separate power and data infrastructure. This merging reduces installation complexity and cost while maintaining service reliability through integrated delivery.
Solution Approach 2:
The optical fiber infrastructure is designed to serve multiple functions simultaneously: it provides both power distribution and digital data services to remote antenna units. The head-end station and optical fiber system are universally utilized for both energy delivery and information transmission, maximizing resource utilization and reducing overall system complexity.
2Quantity of substance
If optical fiber is used to distribute RF signals, then bandwidth is improved, but the ability to provide integrated power and data services deteriorates
Solution Approach 1:
The optical fiber system is designed to perform multiple functions: it distributes RF signals with high bandwidth capability while simultaneously delivering power and digital data services to remote antenna units. This multi-functional approach maintains the bandwidth advantages of optical fiber while adding versatility for integrated service delivery.
Solution Approach 2:
The patent merges RF signal distribution, power delivery, and digital data services into a single optical fiber infrastructure. The head-end station integrates these functions and delivers them concurrently over the optical fiber link, preserving bandwidth performance while enabling comprehensive service integration at the remote antenna units.
3Adaptability or versatility
If multiple power sources are injected into the electrical medium, then adaptability is improved, but signal interference and stability worsen
Solution Approach 1:
The system incorporates feedback mechanisms where the head-end station and remote antenna units monitor power delivery conditions and signal quality. This feedback enables dynamic adjustment of power injection levels and modulation schemes, allowing multiple power sources to be utilized while maintaining signal stability through active control and compensation.
Solution Approach 2:
The power delivery system is designed to be dynamic, allowing real-time adjustment of power injection parameters when multiple sources are used. The system can adapt modulation depth, frequency, and power levels dynamically to prevent interference and maintain stability, enabling flexible use of multiple power sources without compromising reliability.
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
This solution enhances the flexibility and efficiency of service delivery by allowing power distribution to remote units, supporting both RF communications and digital data services, and extends the reach of wireless communication networks by utilizing existing electrical infrastructure for power delivery.
Implementation Method 1
The remote antenna units convert incoming optical RF signals from an optical fiber downlink to electrical RF signals via optical-to-electrical (O/E) converters
Implementation Method 2
The remote antenna units then convert the electrical RF signals to optical RF signals via electrical-to-optical (E/O) converters
Data Source
AI summary
Distributed communications systems providing and supporting radio frequency (RF) communication services and digital data services, and related components and methods are disclosed. The RF communication services can be distributed over optical fiber to client devices, such as remote units for example. Power can also be distributed over electrical medium that is provided to distribute digital data services, if desired, to provide power to remote communications devices and/or client devices coupled to the remote communications devices for operation. In this manner, as an example, the same electrical medium used to transport digital data signals in the distributed antenna system can also be employed to provide power to the remote communications devices and/or client devices coupled to the remote communications devices. Power may be injected and switched from two or more power sources over selected electrical medium to distribute power for power-consuming components supporting RF communications services and digital data services.