Fail-Safe Fourier Transform Matrix Reconfiguration for PA Failure
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Solution Overview
Problem
Current Fourier transform matrix systems in cellular base stations fail to maintain data rate transmission when a power amplifier fails, leading to significant degradation in sector-to-sector isolation and data transmission quality, especially in modern data-centric mobile networks.
Innovation Solution
The implementation of a fail-safe Fourier Transform Matrix system that detects failures in transmit paths and reconfigures the digital and analog FTMs to a pass-thru mode, ensuring minimal data rate loss by bypassing the affected path and maintaining optimal sector-to-sector isolation through RF switches and phase adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional Fourier transform matrix is used in cellular base stations, then power is evenly distributed amongst multiple amplifiers, but data rate transmission is lost when a power amplifier fails
Solution Approach 1:
The system dynamically reconfigures the Fourier transform matrix from a traditional power-distribution mode to a pass-thru mode when amplifier failure is detected. This dynamic adaptation allows the system to maintain data rate transmission by changing the operational state of the matrix based on real-time conditions, resolving the contradiction between reliability and the need for structural flexibility.
Solution Approach 2:
The invention changes the operational parameters of the Fourier transform matrix by adjusting phase shifters and switches to transform the matrix configuration. When a amplifier fails, the system modifies the phase parameters and connection states to create direct pass-thru paths, enabling data transmission to continue despite the hardware failure.
2Reliability
If amplifier isolation is maintained in traditional systems, then sector-to-sector isolation is preserved, but transmission is lost when a transmit path fails
Solution Approach 1:
The system incorporates failure detection feedback mechanisms that monitor the status of transmit paths and amplifiers. When a failure is detected, this feedback triggers automatic reconfiguration of the Fourier transform matrix to pass-thru mode, maintaining transmission continuity without requiring manual intervention.
Solution Approach 2:
The Fourier transform matrix system performs self-reconfiguration when amplifier failure occurs. The system automatically detects the failure condition and reconfigures its own internal connections and phase settings to establish alternative transmission paths, enabling it to service itself and maintain operation without external assistance.
3Reliability
If pass-thru mode is implemented for fail-safe operation, then data rate transmission is maintained during amplifier failure, but system complexity increases
Solution Approach 1:
The Fourier transform matrix is designed with multi-functionality to operate in both traditional power-distribution mode and pass-thru fail-safe mode. By incorporating switches and controllable phase shifters, the single matrix structure can perform multiple functions depending on operational conditions, eliminating the need for separate systems for each mode and reducing overall complexity.
Solution Approach 2:
The system pre-configures the capability for pass-thru operation within the Fourier transform matrix structure, with all necessary switches and phase adjustment mechanisms already in place. When failure occurs, the system simply activates the pre-prepared pass-thru configuration rather than requiring complex real-time construction of alternative paths.
Data Source
AI summary
A base station transmitter for maintaining data rate transmission between a set of Fourier Transform matrices, having a digital Fourier Transform Matrix (FTM), and analog FTM, and a plurality of transmit paths therebetween. During the occurrence of a power amplifier failure, the method includes detecting the failure of a power amplifier (PA); and reconfiguring the digital FTM and analog FTM to a pass-thru mode.