Hybrid Cable for RRH Power and Data Transmission
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Solution Overview
Problem
The high cost of constructing and maintaining remote radio head (RRH) mobile radio systems due to the need for separate power and data lines, making them uneconomical for shorter cable lengths compared to conventional systems.
Innovation Solution
A hybrid cable that integrates a coaxial cable with a hollow inner conductor, allowing both power supply and data transmission by inserting a data line into the inner conductor, which also serves as a conduit for the power line, thereby reusing existing coaxial cables for RRH installations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate power supply line and data line are installed for RRH station, then reliable power supply and data transmission are ensured, but construction cost and installation complexity increase significantly
Solution Approach 1:
The patent combines power supply line and data line into a single hybrid cable structure. The coaxial cable provides power transmission through its conductors while an optical fiber is integrated within the same cable assembly, eliminating the need for separate cable installations and reducing overall system complexity while maintaining functional reliability
Solution Approach 2:
The hybrid cable is designed to perform multiple functions simultaneously: it serves as both a power supply conduit and a data transmission medium. The coaxial structure carries electrical power to the RRH station while the integrated optical fiber handles communication data, making a single cable component multi-functional
2Power
If separate power supply line and data line are installed for RRH station, then adequate power delivery and data communication are achieved, but installation cost increases due to separate cable routes and fire protection measures
Solution Approach 1:
By merging power and data transmission into one hybrid cable, the patent eliminates duplicate installation work. The single cable requires only one routing path, one termination point, and one set of fire protection measures, significantly reducing installation labor and material costs compared to installing separate power and data cables
Solution Approach 2:
The multi-functional hybrid cable reduces overall system component count and installation requirements. By designing a single cable that handles both power and data, the patent reduces the total cost of installation including cable materials, labor for routing and termination, and associated safety infrastructure
3Ease of manufacture
If existing coaxial cable is reused for RRH system, then installation cost is reduced, but the cable must support both power and data functions simultaneously
Solution Approach 1:
The patent transforms the traditional single-function coaxial cable into a multi-functional hybrid cable by integrating an optical fiber within the existing coaxial structure. This adaptation allows the cable to simultaneously handle power transmission through its electrical conductors and data communication through the optical fiber, meeting the versatile requirements of RRH systems
Solution Approach 2:
The patent implements nesting by placing the optical fiber inside the hollow inner conductor of the coaxial cable. This nested structure allows the optical fiber to be housed within the existing cable framework, utilizing the available space efficiently while maintaining the cable's power transmission capabilities through its outer conductors
Data Source
AI summary
The hybrid cable is a co-axial cable and has an external conductor and a hollow internal conductor. It runs from the radio set to a mast (103) on the roof (102) of a building (101). It has a data line (108) in the interior cavity of the hollow inner conductor. The said data line may be intended to transmit optical and/or electrical data to an/or from a mobile radio installation with a remote radio head (105).