Link Adaptation for Microwave Antenna Alignment
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Solution Overview
Problem
In microwave communication systems, manual antenna alignment and frequency adjustment are labor-intensive and costly, and prone to errors due to environmental factors like strong winds and interference from devices using the same frequency, disrupting signal transmission quality.
Innovation Solution
A link adaptation method and device that automatically detect signal strength and interference levels to perform antenna alignment and frequency adjustments, using predefined thresholds and adjustment times to optimize link quality without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual antenna alignment and frequency adjustment are performed, then signal transmission quality can be maintained, but labor costs increase and operation complexity increases
Solution Approach 1:
The system performs self-diagnosis and self-adjustment by automatically detecting RSSI and SINR values, comparing them against thresholds, and executing antenna alignment or frequency adjustment operations without manual intervention, thereby maintaining signal quality while eliminating labor-intensive manual operations
Solution Approach 2:
The system continuously monitors transmission quality through RSSI and SINR detection, uses this feedback to determine whether alignment or frequency adjustment is needed, and automatically executes the appropriate correction, creating a closed-loop control system that maintains optimal signal transmission
2Productivity
If automated link adaptation is implemented, then labor costs are reduced and operation efficiency is improved, but device complexity increases
Solution Approach 1:
The automated system divides the link adaptation process into distinct functional modules: RSSI detection module, SINR detection module, threshold comparison module, and execution module (antenna alignment or frequency adjustment). This segmentation allows each module to perform a specific function independently, improving automation efficiency while managing complexity through modular design
Solution Approach 2:
The system integrates multiple functions into a single automated link adaptation device that can perform both antenna alignment and frequency adjustment operations based on the same detection and decision-making framework, thereby improving productivity while avoiding the need for separate dedicated systems for each function
3Reliability
If frequent antenna alignment and frequency adjustment are performed, then signal transmission quality is maintained, but time consumption increases
Solution Approach 1:
The system performs adjustment operations selectively rather than continuously - only when detection results indicate that transmission quality thresholds are violated. This partial action approach maintains signal quality by performing necessary adjustments while avoiding unnecessary operations that would consume time
Solution Approach 2:
The system pre-establishes RSSI and SINR threshold values that define acceptable transmission quality levels. By having these criteria predetermined, the system can quickly determine whether adjustment is needed without complex real-time analysis, reducing decision-making time while maintaining quality standards
Data Source
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AI summary
The present invention relates to the field of communications, and provides a link adaptation method and device, so as to determine, according to transmission quality of a signal in a link, to perform antenna alignment and/or frequency adjustment. The method includes: detecting, by a first antenna device, an RSSI of a link between the first antenna device and a second antenna device; when it is determined that the RSSI is greater than or equal to a first RSSI threshold, detecting, by the first antenna device, an SINR of the link; and choosing, by the first antenna device according to the RSSI and the SINR, to perform frequency adjustment and/or antenna alignment with the second antenna device. Embodiments of the present invention are applied to link adaptation.