Dual-Mode PLC RF Communication Frequency Configuration
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Solution Overview
Problem
Existing dual-mode communication systems face challenges with low transmission efficiency due to overlapping high-order harmonic frequencies between PLC and RF communication, and interference from existing circuits, which limits application and scalability.
Innovation Solution
A configuration method for dual-mode converged communication that determines and configures non-overlapping operating frequency bands for PLC and RF communication by using a frequency band number configuration table to avoid harmonic interference and optimize channel selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If PLC and RF communication operate simultaneously with existing frequency band configurations, then dual-mode communication coverage is improved, but high-order harmonic frequencies overlap causing multiplicative noise and reducing transmission efficiency
Solution Approach 1:
The patent changes the operating frequency parameters of PLC and RF communication by configuring specific frequency band numbers (e.g., PLC bands 2-6 and RF bands 1-5) to ensure that high-order harmonic frequencies do not overlap. This parameter optimization eliminates multiplicative noise while maintaining dual-mode communication coverage.
2Device complexity
If existing circuits are used in dual-mode communication, then device complexity is reduced, but CPU noise and circuit interference significantly impact RF reception sensitivity and transmission performance
Solution Approach 1:
The patent applies preliminary anti-action by configuring frequency bands in advance to avoid harmonic overlap, and by designing circuit isolation measures (such as separate LDO regulators for PLC and RF modules) to prevent CPU noise and multiplicative noise from affecting RF reception sensitivity before interference occurs.
3Ease of operation
If frequency bands are configured without optimization, then configuration complexity is low, but harmonic frequency overlap reduces reception sensitivity and communication distance
Solution Approach 1:
The patent implements preliminary action by pre-configuring frequency band numbers in the system to ensure harmonic frequency separation. The PLC operates on bands 2-6 and RF on bands 1-5, which is established in advance to prevent harmonic overlap and maintain high reception sensitivity without requiring complex real-time adjustments.
Data Source
AI summary
Provided are a configuration method and apparatus for dual-mode converged communication, and a dual-mode converged communication system. The method includes: determining a first operating frequency band of power line communication (PLC) and a second operating frequency band of radio frequency (RF) communication; and configuring a second frequency band number of the second operating frequency band based on a first frequency band number of the first operating frequency band, such that a high-order harmonic frequency of a first operating clock of the PLC and a high-order harmonic frequency of a second operating clock of the RF communication do not overlap with the first operating frequency band or the second operating frequency band. This can reduce an impact of multiplicative noise generated by harmonic superposition and an impact of noise generated by a CPU during operation on performance of a dual-mode converged communication unit, improving transmission efficiency of dual-mode converged communication.