Distributed Antenna Fiber Detection Through Relay Channel Switching
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Solution Overview
Problem
In distributed antenna systems, manually detecting optical fiber connections between multiple devices is difficult and time-consuming, especially when these devices are located at different physical locations, making it challenging to identify and correct connection errors.
Innovation Solution
An optical fiber detection method and apparatus that enables the near-end device to send a test mode switch command to relay devices, switch to specific optical channels, acquire connection information, and determine the fiber status based on a predetermined relationship, using control modules and optical switches to automate the detection process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If manual detection of optical fiber connections is used, then device complexity is reduced, but detection time and labor cost increase significantly
Solution Approach 1:
The system performs self-detection of optical fiber connection status through automated optical detection devices at each node. The near-end device automatically detects connection status of optical fibers connecting to relay devices and far-end devices without requiring manual intervention, thereby reducing detection time and labor costs while maintaining high automation level
Solution Approach 2:
The system establishes feedback mechanisms where relay devices and far-end devices return connection status information to the near-end device. This feedback loop enables automatic detection and identification of connection errors through optical detection devices that monitor and report the status of optical fibers in real-time
2Productivity
If optical fiber connection detection is performed automatically, then detection efficiency is improved, but device complexity increases
Solution Approach 1:
The optical detection devices perform multiple functions including connection status detection, error identification, and real-time monitoring within a single integrated system. This multi-functionality approach improves detection efficiency while controlling overall system complexity by consolidating detection capabilities rather than requiring separate specialized devices for each function
Solution Approach 2:
The system introduces optical detection devices as intermediary components between the communication nodes. These intermediaries automatically detect optical fiber connection status and transmit this information back to the near-end device, enabling efficient detection without requiring direct complex interactions between all system components
3Measurement precision
If manual detection methods are used, then implementation simplicity is maintained, but the ability to pinpoint connection errors is lost
Solution Approach 1:
The system segments the optical fiber network into distinct sections with detection points at each node (near-end device, relay devices, far-end devices). This segmentation enables precise identification of connection errors in specific segments while maintaining operational simplicity through automated detection at each segment boundary, allowing the system to locate exact connection issues without complex manual procedures
Data Source
AI summary
An optic fiber detection method of a distributed antenna system includes: at a near-end device, sending a test mode switch command to a plurality of relay devices to command the plurality of relay devices to switch to a test mode; and under the test mode: sending a first optical switch control command, the first optical switch control command being used to instruct the plurality of relay devices that have received the first optical switch control command to switch to a group of first optical channels; acquiring optic fiber connection information between the near-end device and the relay devices under all first optical channels of the group of first optical channels; and determining optic fiber connection status of the distributed antenna system according to the optic fiber connection information between the near-end device and the relay devices under all first optical channels and a working mode of the distributed antenna system.