Remote Radio Head Hybrid Cable Integration
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Solution Overview
Problem
The existing wireless access node systems require a large number of cables for connecting Remote Radio Heads (RRH) to baseband signal processing equipment, making installation tasks difficult and increasing equipment and installation costs.
Innovation Solution
The integration of optical signals and power supply into a single opto-electric hybrid cable, which includes optical fibers and power supply lines, reduces the number of cables needed by using opto-electric hybrid connectors for both signal and power transmission, allowing a single cable to replace multiple cables, and includes a remote radio head with integrated connection terminals, a power supply unit, photoelectric/electrooptic conversion, framer, digital signal processing, and transmission/reception signal conversion modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate optical cables and coaxial cables are used for signal transmission and power supply, then reliable signal transmission and power supply are achieved, but the number of cables increases making installation more difficult and costly
Solution Approach 1:
The patent combines separate optical cables for signal transmission and coaxial cables for power supply into a single integrated opto-electric hybrid cable. This hybrid cable contains both optical fibers and copper conductors within one cable structure, allowing simultaneous transmission of optical signals and electrical power through a single connection, thereby reducing cable quantity and simplifying installation while maintaining functional reliability
Solution Approach 2:
The opto-electric hybrid cable serves multiple functions simultaneously: it transmits optical signals for baseband communication and conducts electrical power for remote radio head operation through its integrated structure. The cable connector also provides universal connectivity for both signal and power functions through a single interface, eliminating the need for separate connection terminals
2Adaptability or versatility
If multiple cables are installed for signal and power transmission, then functional requirements are met, but equipment costs and installation costs significantly increase
Solution Approach 1:
The patent merges multiple separate cables (optical cable and coaxial cable) into a single opto-electric hybrid cable that fulfills all functional requirements. This consolidation reduces material costs, manufacturing complexity, and installation expenses while maintaining the system's ability to handle both optical signal transmission and electrical power delivery
Solution Approach 2:
The opto-electric hybrid cable employs composite construction combining optical fibers and copper conductors within a single cable jacket. This composite structure integrates materials with different properties (optical transmission and electrical conduction) into one unified product, achieving functional versatility while reducing overall system cost compared to using separate cables
3Reliability
If a large number of cables are connected at high altitude, then complete connectivity is achieved, but the cable connection task becomes more difficult
Solution Approach 1:
The patent combines multiple cable connections (optical cable connection and coaxial cable connection) into a single hybrid cable connection. This reduces the number of connection operations required at high altitude from multiple separate connections to just one integrated connection, significantly simplifying the installation task while ensuring complete connectivity through the unified interface
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 simplifies the installation process and reduces costs by minimizing the number of cables required, while maintaining efficient signal transmission and power supply to the remote radio head, thereby lowering the complexity and expense of high-altitude cable connections.
Implementation Method 1
the base station main body part may be connected to the antenna part through an optical cable transferring the transmission and reception signal in an optical communication scheme
Implementation Method 2
a coaxial cable which is a power supply cable for supplying an operation power source of the remote radio equipment
Implementation Method 3
The integration of optical signals and power supply into a single opto-electric hybrid cable, which includes optical fibers and power supply lines
Data Source
AI summary
A remote radio head is provided. The remote radio head includes at least one integrated connection terminal for integrating and receiving at least one optical signal with at least one power source, a power supply unit which receives and supplies the power source by converting into an internal driving power source of a corresponding remote radio head, a photoelectric/electrooptic conversion unit for receiving and converting the optical signal into an electric signal, a framer for restoring the electric signal converted in the photoelectric/electrooptic conversion unit according to a preset signal demodulation format, a digital signal processing unit receives a signal outputted from the framer to adjust a waveform and a level in a digital level and a transmission and reception signal conversion module which converts a signal into a high-frequency transmission wireless signal, and amplifies the signal at a high power to output the signal to an antenna side.