Cable Testing for Remote Radio Heads
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Solution Overview
Problem
The deployment of wireless communication networks faces challenges in balancing coverage and capacity, particularly with the use of remote radio heads, where cable testing is crucial for system performance and reliability but lacks efficient methods for assessing cable quality and characteristics.
Innovation Solution
A method and device for testing cables connected to remote radio heads, involving the generation and transmission of test signals, conversion to analogue signals, and evaluation of response signals to estimate cable length, termination type, transfer functions, and noise levels, using a test device and converter device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If remote radio heads are deployed to improve coverage and capacity, then network performance is improved, but cable installation complexity and testing difficulty increase
Solution Approach 1:
The cable testing method enables the system to automatically characterize cable properties without requiring external specialized equipment. The converter device and remote radio head work together to perform self-diagnosis, extracting cable length, termination type, and transfer function directly from operational signals, thereby simplifying installation and testing procedures while maintaining high network reliability
Solution Approach 2:
The patent introduces an intermediate testing methodology that uses existing operational signals as mediators to characterize cable properties. Instead of requiring separate physical test equipment, the system uses the converter device and remote radio head communication signals themselves to probe and measure cable characteristics, reducing installation complexity while ensuring reliable network performance
2Measurement precision
If traditional cable testing methods are used, then cable quality can be assessed, but testing complexity and costs increase
Solution Approach 1:
The system performs self-testing by utilizing its own operational signals to characterize cable properties. The converter device sends test signals through the cable and analyzes the reflected or transmitted signals to determine cable length, termination type, and transfer function, eliminating the need for external cable testers and reducing testing complexity while maintaining accurate cable quality assessment
Solution Approach 2:
The testing methodology is universal and can be applied to various cable types and configurations without requiring different test equipment. The same converter device and signal processing approach work for different cable lengths, termination types, and frequency ranges, simplifying the testing process while providing comprehensive cable quality assessment across diverse deployment scenarios
Data Source
AI summary
It is presented a method for testing a cable connectable to a remote radio head. The method is performed in a test device and comprises the steps of: generating an outbound test container, the outbound test container comprising digital samples representing a test signal; transmitting the outbound test container and a frequency parameter indicating a frequency on which the test signal is to be transmitted to a converter device being connectable to a plurality of remote radio heads via respective cables, for transmission by the converter device; receiving an inbound test container, the inbound test container comprising digital samples of a response signal received by the converter device based on the outbound test container; and evaluating the inbound test container.