Bonded OFDM System Throughput via Parallel Signal Pathways
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Solution Overview
Problem
Conventional OFDMA-based communication systems experience bottlenecks in data throughput due to limitations in physical (PHY)/media access controller (MAC) interaction at coaxial cable interfaces, particularly in Multimedia over Coax Alliance (MoCA)-based systems.
Innovation Solution
The implementation of a bonded OFDM communication system that uses multiple signal pathways bonded together to form a high-throughput physical channel, with RF modulation at frequencies higher than standard MoCA-specified frequencies, and incorporates adaptive predicted slotted timing mechanisms within the TDMA protocol to enhance bandwidth utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional OFDMA-based signaling is used at coaxial cable interfaces, then system compatibility and standard adherence are maintained, but data throughput is limited due to PHY/MAC interaction bottlenecks
Solution Approach 1:
The patent segments the data transmission by dividing the data stream into multiple parallel sub-channels, each carrying a portion of the data. This segmentation allows simultaneous transmission over multiple frequency bands, effectively bypassing the PHY/MAC interaction bottleneck and achieving higher aggregate throughput while maintaining compatibility with existing OFDMA standards.
Solution Approach 2:
The patent introduces an additional spatial dimension by bonding multiple physical interfaces (e.g., multiple coaxial cable connections) to create a multi-dimensional transmission path. This bonded interface approach transforms a single-dimensional throughput limitation into a multi-dimensional parallel transmission system, achieving throughput scaling without increasing per-interface complexity.
2Productivity
If multiple signal pathways are bonded together to increase throughput, then data rate improves, but system complexity and interface requirements increase
Solution Approach 1:
The patent merges multiple signal pathways at the physical layer to form a bonded interface that appears as a single logical high-speed connection to upper layers. This merging approach consolidates the complexity of managing multiple interfaces into a unified bonding mechanism, achieving high throughput while presenting a simplified interface to the network stack.
Solution Approach 2:
The bonded interface design provides multi-functionality by enabling both high-speed bonded transmission and fallback to individual interface operation. The system can dynamically adapt between bonded and non-bonded modes, providing universal compatibility with different network configurations and maintaining backward compatibility while enabling advanced high-throughput operation.
Data Source
AI summary
An orthogonal frequency division multiplexing (OFDM) communication system includes a first interface having a first cable coupler to couple to a first end of a coaxial cable, and a first plurality of signal pathways coupled to the first cable coupler. Each signal pathway of the first plurality includes a physical (PHY) layer component and a radio frequency (RF) front end coupled to the PHY layer component. The system further includes a second interface having a second cable coupler to couple to a second end of a coaxial cable, and a second plurality of signal pathways coupled to the second cable coupler. Each signal pathway of the second plurality corresponds to a signal pathway of the first plurality and includes a PHY layer component and an RF front end coupled to the PHY layer component.