Powerline Communication Interference Detection and Dynamic Power Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current powerline communication (PLC) systems face interference issues due to increased transmission power, which causes intermodulation products and noise in other frequency bands, particularly affecting radio stations like FM frequencies.
Innovation Solution
A method and device that monitor for interference components in unused frequency bands during power grid periods, determining their occurrence times, and adjust transmission power only during those specific periods to minimize interference without reducing overall transmission power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If transmission power is increased to meet higher data rate demand, then data transmission capability is improved, but interference components occur in other useful frequency bands
Solution Approach 1:
The patent implements dynamic transmission power adjustment by continuously monitoring the presence of interference components in other useful frequency bands and adapting the transmission power level accordingly. The system switches between high power mode (when no interference is detected) and low power mode (when interference components are detected), allowing the transmission power to be dynamic rather than static, thus resolving the contradiction between maintaining high data transmission capability and avoiding interference generation.
Solution Approach 2:
The patent employs a feedback mechanism where the system monitors the frequency spectrum for interference components generated by its own transmissions. Based on this feedback information, the system adjusts its transmission power to eliminate or reduce the harmful interference while maintaining optimal data transmission. The feedback loop continuously detects interference components and triggers power reduction when necessary, creating a self-regulating system that balances productivity and harmful factor generation.
2Object-generated harmful factors
If transmission power is permanently reduced to avoid interference, then interference in other frequency bands is reduced, but overall data transmission capability decreases
Solution Approach 1:
The patent implements periodic monitoring of the frequency spectrum for interference components and applies transmission power reduction only during specific periods when interference is detected. Instead of continuous power reduction, the system periodically checks for interference and temporarily reduces power only when necessary, thereby minimizing the impact on overall data transmission capability while still effectively reducing interference components in other useful frequency bands.
Solution Approach 2:
The system dynamically adjusts transmission power between high and low states based on real-time detection of interference components. When no interference is present, the system operates at high transmission power for optimal data transmission. When interference components are detected in other useful frequency bands, the system switches to low transmission power to eliminate the harmful effects. This dynamic adaptation allows the system to maintain high productivity during normal operation while temporarily reducing power only when interference occurs.
Data Source
Figure 1
Figure 2
Figure 3~4a
AI summary
The invention relates to a method and a device for carrying out communication via at least one power line of a power supply network using at least one frequency band, for determining whether an interference component has occurred in a signal of a monitoring frequency band during at least one first power network period, wherein the frequency band differs from the monitoring frequency band, for determining at least one occurrence duration of the at least one interference component during the first power network period and for reducing a transmission power in at least one frequency band at least for the determined occurrence duration in at least one subsequent power network period.