Extended Range Copper Transceiver Signal Processing
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Solution Overview
Problem
Current technologies face limitations in extending the range of Ethernet connections over twisted-pair copper cabling beyond standard lengths without requiring significant changes to PHY transceiver architectures, especially for achieving high data rates like 1 Gbps or 10 Gbps, and are susceptible to signal attenuation and interference.
Innovation Solution
A method and system for an extended range copper transceiver that reduces communication rates using multi-rate PHY layer operations, enabling signal processing techniques like echo cancellation and equalization to extend the range of Ethernet connections over twisted-pair copper cabling, allowing for longer cable lengths and higher insertion loss cabling while maintaining standard connection lengths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the data transmission rate is increased to 1 Gbps or 10 Gbps, then the communication speed is improved, but the transmission distance is limited to standard cable lengths due to signal attenuation
Solution Approach 1:
The patent applies preliminary equalization and echo cancellation processing at the transmitter side before signal transmission. This preliminary action compensates for anticipated signal degradation over extended distances, enabling high-speed data transmission beyond standard cable lengths without requiring receiver-side retransmission or repetitioners.
Solution Approach 2:
The patent dynamically adjusts transmission parameters including data rate, modulation scheme, and equalization coefficients based on detected channel conditions. By changing these parameters adaptively, the system maintains reliable high-speed communication over varying cable lengths and quality conditions, extending the practical transmission distance.
2Length of stationary object
If cable length is extended beyond 100 meters, then the coverage area is improved, but signal quality deteriorates due to attenuation and interference
Solution Approach 1:
The patent implements feedback mechanisms where the receiver detects signal quality metrics including equalization error and echo residual, then communicates this information back to the transmitter. The transmitter uses this feedback to adjust equalization filters and cancellation parameters, maintaining signal quality over extended cable lengths through continuous adaptive optimization.
Solution Approach 2:
The patent employs composite signal processing techniques combining multiple equalization methods (linear equalization, decision-feedback equalization) with echo cancellation and interference suppression. This composite approach addresses multiple degradation mechanisms simultaneously, preserving signal quality over extended distances where single-method approaches fail.
3Device complexity
If standard PHY transceiver architecture is used, then device complexity is minimized, but extended range operation is not achieved
Solution Approach 1:
The patent designs the PHY transceiver with multi-functional signal processing blocks that can operate at multiple data rates (100 Mbps, 1 Gbps, 10 Gbps) and support both standard and extended range modes. By making the architecture universal and rate-adaptive, the system extends connection range without requiring separate dedicated hardware for each mode, thereby limiting complexity growth.
Solution Approach 2:
The patent introduces dynamic adaptability into the PHY architecture through adjustable equalization filters, variable data rate operation, and adaptive echo cancellation. These dynamic elements allow the transceiver to optimize performance for extended range operation while maintaining compatibility with standard architectures, extending capability without proportionally increasing complexity.
4Length of stationary object
If additional network equipment like switches or repeaters are deployed to extend range, then transmission distance is improved, but network cost and device quantity increase
Solution Approach 1:
The patent extracts and integrates the range-extending functions (equalization, echo cancellation, adaptive signaling) directly into the end-point PHY transceivers, eliminating the need for intermediate repeaters or switches. By taking out these functions from separate network equipment and embedding them in the transceivers themselves, the system extends connection distance without adding network infrastructure devices.
Data Source
AI summary
Aspects of a method and system for an extended range copper transceiver are provided. Reducing the communication rate provided by multi-rate physical (PHY) layer operations in an Ethernet transceiver may extend the range of the Ethernet transceiver over twisted-pair copper cabling from a standard connection length. The Ethernet transceiver may support up to 1 Gbps or up to 10 Gbps transmission rate over copper cabling. The multi-rate PHY layer architecture in the Ethernet transceiver may support signal-processing operations, such as echo cancellation and/or equalization, which may be applied to the reduced communication rate to enable range extension. The reduced communication rate may be achieved by reducing the symbol rate provided by the multi-rate PHY layer operations. Reducing the communication rate may also enable utilizing greater insertion loss cabling for a standard connection length.