Inter-domain Signal Alignment for Power Line Communication
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Solution Overview
Problem
Neighboring networks often interfere with each other due to simultaneous signal transmissions, leading to communication disruptions, especially when they share common wiring infrastructure like power lines.
Innovation Solution
A method and apparatus that detect and align periodic signals across domains using common AC signals, allowing for coordinated communication by synchronizing time slots for inter-domain communication to reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If neighboring networks transmit signals simultaneously, then communication efficiency is improved, but interference between networks increases
Solution Approach 1:
The patent implements periodic time slot allocation where networks transmit signals in alternating periods rather than continuously. Each network is assigned specific time windows for transmission, creating a periodic pattern that prevents simultaneous transmissions and reduces interference while maintaining overall communication efficiency.
Solution Approach 2:
The patent introduces dynamic time slot allocation that can be adjusted based on network conditions, traffic demands, and interference levels. The timing parameters are not fixed but can be modified in real-time to optimize communication efficiency while preventing interference, making the system adaptable to changing conditions.
2Device complexity
If networks operate independently without coordination, then device complexity is reduced, but communication reliability deteriorates
Solution Approach 1:
The patent implements preliminary coordination through pre-established timing synchronization mechanisms and pre-assigned time slots before actual data transmission begins. This preliminary setup ensures that networks are pre-coordinated to avoid interference, enabling reliable inter-domain communication without requiring complex real-time coordination during data transmission.
3Ease of operation
If networks use common wiring infrastructure, then ease of operation is improved, but harmful factors increase due to signal interference
Solution Approach 1:
The patent applies periodic time-division multiplexing on the shared wiring infrastructure, where different networks transmit signals in alternating time periods. This periodic separation allows multiple networks to utilize the same physical infrastructure without causing harmful signal interference, as each network transmits only during its assigned time windows.
Data Source
AI summary
A method includes detecting, at a first timing with reference to a periodic signal that is common to a first domain and a second domain, a first signal indicative of the first domain. The first signal is used by the first domain to signal presence of the first domain and a time used by the first domain for inter domain communication with other domains. Further, the method includes comparing, the first timing to a second timing with reference to the periodic signal. The second domain uses a second signal at the second timing to signal presence of the second domain and a time used by the second domain for inter domain communication with other domains. Then, the method includes aligning the first signal and the second signal to enable inter domain communication between the first domain and the second domain.