PLC PHY Frame Segmentation With Multiple RS Blocks for Throughput
Find Innovative SolutionsGenerate Solutions
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 affects data transmission efficiency, especially in medium communication links.
Innovation Solution
The method involves transmitting multiple RS-blocks in a single packet, particularly in good channel conditions, allowing for higher modulation constellations and increased throughput by utilizing existing PLC standards like IEEE P1901.2, where additional RS-blocks are encoded and interleaved within OFDM packets, enabling efficient data transmission over power lines.
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 data payload is divided into multiple RS-blocks (e.g., 4 blocks of 255 bytes each) instead of transmitting a single large block. Each RS-block is independently encoded and transmitted within the same packet, allowing the system to utilize excess symbols while maintaining manageable block sizes for error correction
Solution Approach 2:
The patent introduces a new dimension to packet structure by incorporating multiple RS-blocks within a single packet transmission. This multi-block dimension allows the system to fill previously unused symbol slots in the packet, thereby increasing throughput without requiring higher modulation constellations
2Productivity
If larger data packet sizes are transmitted to improve throughput, then network efficiency increases, but the channel conditions must be good to support higher modulation constellations
Solution Approach 1:
By segmenting large data payloads into multiple smaller RS-blocks, the system can transmit more data within the same packet structure without requiring higher modulation schemes. This segmentation allows efficient utilization of available symbols while maintaining robust error correction for each block
Solution Approach 2:
The patent changes the parameter of RS-block quantity from 1 to multiple blocks per packet. This parameter change allows the system to increase throughput through better symbol utilization rather than by increasing modulation order, thereby reducing dependency on excellent channel conditions
3Productivity
If multiple RS-blocks are transmitted in a single packet, then excess symbols are utilized and throughput increases, but the packet structure becomes more complex
Solution Approach 1:
The data is segmented into multiple RS-blocks that can be independently encoded using standard Reed-Solomon encoding. Each block is processed separately through encoding and interleaving, which simplifies the overall process compared to handling a single large block, while still utilizing excess symbols effectively
Data Source
AI summary
Embodiments of methods and systems are presented for generating PHY frames with multiple Reed-Solomon encoded blocks in PLC networks. In one embodiment, a MAC layer divides a data frame from a higher level into data blocks. The MAC layer may add a MAC header and/or an error-detection code to each data block. The MAC layer then passes the data blocks to a PHY layer to be individually Reed-Solomon encoded and combined into a single PHY frame for transmission on a PLC network. In other embodiments, the MAC layer passes a single data frame to the PHY layer, which divides the MAC data frame into segments to be individually Reed-Solomon encoded. The individual Reed-Solomon encoded segments are combined into a single PHY frame for transmission on a PLC network.