RF Transceiver Tuning for RRU Sensitivity and Interference Control
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Solution Overview
Problem
Existing solutions for improving the sensitivity of Remote Radio Units (RRUs) in Open Radio Access Networks (O-RAN) are cumbersome and time-consuming, and optimizing matching circuits alone does not adequately address intermodulation interference, failing to meet 3GPP specification requirements.
Innovation Solution
A method and system that includes circuit matching, filter setting, and configuration adjusting using software modules to optimize the performance of radio frequency transceivers by selecting target simulated circuits and filter parameters based on test results, thereby improving sensitivity and eliminating interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the matching circuit of the RRU is optimized, then the sensitivity of the RRU is improved, but the development time and cost increase due to cumbersome and time-consuming optimization processes
Solution Approach 1:
The patent pre-establishes multiple simulated circuits with different matching parameters before actual testing. During the adjustment process, these pre-prepared simulated circuits are directly matched and selected based on test results, eliminating the need for time-consuming real-time circuit optimization and manual adjustments.
Solution Approach 2:
The patent creates simulated circuits that replicate the electrical characteristics of actual RRU matching circuits. These simulated circuits serve as virtual models that can be quickly tested and adjusted without affecting the physical hardware, thereby reducing development time while maintaining optimization effectiveness.
2Reliability
If only the matching circuit is optimized, then some sensitivity improvement is achieved, but intermodulation interference remains and 3GPP specification requirements are not met
Solution Approach 1:
The patent divides the RRU adjustment process into three independent segments: matching circuit adjustment, filter parameter adjustment, and configuration parameter adjustment. Each segment addresses specific aspects of performance, with filter parameters specifically targeting intermodulation interference suppression, thereby comprehensively meeting 3GPP requirements.
Solution Approach 2:
The patent systematically adjusts multiple parameters including matching circuit parameters, filter parameters (such as cutoff frequency, bandwidth), and configuration parameters. By changing these parameters in a coordinated manner, the system optimizes sensitivity while simultaneously suppressing intermodulation interference to meet specification requirements.
3Manufacturing precision
If manual circuit optimization is performed, then circuit matching is achieved, but the process is cumbersome and requires additional development costs
Solution Approach 1:
The patent implements an automated adjustment system that performs self-testing and self-optimization. The controller automatically executes tests on simulated circuits, analyzes results, selects optimal configurations, and applies adjustments without requiring manual intervention, thereby simplifying the manufacturing process while maintaining high precision.
Solution Approach 2:
The patent establishes a closed-loop feedback system where test results from simulated circuits are automatically fed back to the controller. The controller uses this feedback to iteratively adjust matching parameters, filter parameters, and configuration parameters, achieving precise circuit matching through automated feedback-driven optimization.
Data Source
AI summary
A radio frequency transceiver adjusting method includes configuring a controller to execute a circuit matching software module to perform a first transmission test on a radio frequency transceiver to generate a plurality of circuit test results, select a target simulated circuit from a plurality of reference simulated circuits, match the target simulated circuit to the radio frequency transceiver, execute a filter setting software module to set a filter parameter group, convert the filter parameter group into an initial configuration data, import the initial configuration data to the radio frequency transceiver, execute a configuration adjusting software module to perform a second transmission test on the radio frequency transceiver to generate a plurality of parameter test results, select a target parameter from a plurality of reference parameters, and adjust the initial configuration data according to the target parameter.