PLC PHY Frames Using Multiple Reed-Solomon Blocks for Higher Throughput
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Solution Overview
Problem
Current power line communication (PLC) systems are limited in network throughput due to the transmission of only a single Reed-Solomon (RS) block per packet, leaving excess symbols unused, which restricts the use of higher modulation constellations and reduces data transmission efficiency.
Innovation Solution
Implementing multiple RS-blocks per packet transmission, especially in good channel conditions, to increase network throughput by utilizing existing PLC standards like IEEE P1901.2, allowing for higher modulation constellations and more efficient data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single RS-block is transmitted per packet transmission as per existing PLC standards, then the system maintains compatibility with current standards, but network throughput is limited and excess symbols remain unused
Solution Approach 1:
The patent segments the data transmission by dividing it into multiple RS-blocks (e.g., 2-4 blocks) within a single packet transmission. Each RS-block contains a portion of the encoded data, allowing the system to utilize all available symbols in the packet transmission rather than leaving excess symbols unused. This segmentation directly increases network throughput while maintaining manageable complexity through structured organization.
Solution Approach 2:
The patent transitions from a single-dimension approach (one RS-block per packet) to a multi-dimensional approach by transmitting multiple RS-blocks simultaneously within the same packet structure. This dimensional expansion allows the system to fill the transmission capacity more completely, utilizing previously wasted symbol resources and thereby increasing overall throughput without proportionally increasing complexity.
2Productivity
If higher modulation constellations are used to increase data transmission efficiency, then throughput improves, but the system requires good channel conditions and proper utilization of available symbols
Solution Approach 1:
The patent changes the transmission parameter from a single RS-block to multiple RS-blocks per packet, which effectively increases the utilization of available symbols. This parameter change enables the system to support higher modulation constellations (such as 64-QAM or 256-QAM) by providing sufficient encoded data to fill the higher-order modulation schemes, thereby improving data transmission efficiency while adapting to good channel conditions.
3Productivity
If multiple RS-blocks are transmitted per packet, then excess symbols are utilized and throughput increases, but the transmission structure becomes more complex
Solution Approach 1:
The patent merges multiple RS-blocks into a single packet transmission structure, combining what would traditionally be separate transmissions into one unified packet. This merging approach increases network throughput by utilizing all available symbols while managing complexity through a consolidated structure that handles multiple blocks systematically, rather than requiring separate transmission protocols for each block.
Data Source
AI summary
Embodiments of methods and systems are presented for handling PHY frames with multiple Reed-Solomon encoded blocks in PLC networks. A PHY frame is receive from a PLC device, the PHY frame comprising two or more Reed-Solomon encoded blocks. A first Reed-Solomon encoded block comprises a media access control (MAC) header. The first Reed-Solomon encoded block is decoded. An error-detection check is performed on the first decoded Reed-Solomon encoded block.