Communication Medium Selection for Interference Mitigation
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Solution Overview
Problem
The IEEE 1905.1 standard for home networking does not adequately address interference issues between frequency ranges of DOCSIS and EPoC technologies, which can overlap with other networking technologies like PLC, leading to data transmission interference.
Innovation Solution
A device and method that select the most reliable communication medium for data transmission by monitoring parameters such as data rate, error rate, and medium utilization, and dynamically switching if interference is detected, using Ethernet, coaxial cables, power lines, or wireless mediums, while ensuring other data transmissions are not impacted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple communication mediums are used simultaneously for data transmission, then network coverage and connectivity are improved, but interference between overlapping frequency ranges occurs
Solution Approach 1:
The system continuously monitors transmission quality and detects interference between different communication mediums. When interference is detected between frequency ranges (e.g., DOCSIS upstream 5-85 MHz overlapping with PLC 1.8-50 MHz), the system provides feedback to adjust or disable conflicting transmissions, thereby maintaining network coverage while eliminating harmful interference
Solution Approach 2:
The system dynamically selects and switches between different communication mediums based on real-time conditions. Instead of using all mediums simultaneously with fixed allocations, the system adapts the active communication paths according to detected interference levels, allowing flexible reconfiguration of the network to avoid frequency conflicts while preserving connectivity
2Reliability
If a single communication medium is used for data transmission, then frequency interference is minimized, but network coverage and connectivity are reduced
Solution Approach 1:
The network is segmented into multiple independent communication paths using different mediums (Ethernet, Wi-Fi, powerline, coaxial). Each segment operates semi-independently, allowing the system to activate only the non-interfering segments while keeping others dormant, thus achieving both reliable transmission and comprehensive coverage
3Adaptability or versatility
If DOCSIS and PLC communications operate in overlapping frequency ranges, then communication flexibility is improved, but transmission interference increases
Solution Approach 1:
The system performs preliminary detection of frequency range overlaps before transmissions occur. When potential interference between DOCSIS and PLC frequency ranges is identified, the system takes preemptive action by adjusting frequency allocations or disabling one of the conflicting transmissions before interference can occur, thereby maintaining communication flexibility while preventing harmful effects
Data Source
AI summary
A method for transmitting data from within a wired communication system is disclosed. A first network-enabled device can select one of a plurality of communication mediums for transmitting the data stream to the second device and transmit the data stream to the second device using the selected communication medium. The first device determines that the transmission of the data stream using the selected communication medium is being interfered with by transmission of other data from the first device to a third device on another of the plurality of communication mediums. In response to determining that the transmission of the data stream to the second device on the selected communication medium is being interfered with by the transmission of the other data to the third device using the other communication medium, the first device turns off the transmission of the other data to the third device on the other communication medium.