Ethernet Repeater Auto-Negotiation via Hardware Logic
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Solution Overview
Problem
Ethernet repeaters and switches often require complex software management and advanced microcontrollers to auto-negotiate link speeds, which increases cost and complexity, and can lead to software defects and the need for field reprogramming or replacement.
Innovation Solution
An adaptive network repeater with a controller that monitors communication link status between subnetworks and auto-negotiates link speeds using simpler, less expensive microcontrollers, allowing communication at compatible speeds between subnetworks with incompatible speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If advanced microcontrollers and complex software management are used to enable auto-negotiation of link speeds, then the adaptability and functionality of the repeater are improved, but the device complexity and cost increase
Solution Approach 1:
The patent extracts the complex auto-negotiation logic from the microcontroller and implements it through hardware logic circuits. The link speed negotiation, link partner ability detection, and automatic configuration functions are realized through dedicated hardware modules rather than software running on a complex microcontroller, thereby reducing device complexity while maintaining adaptability.
Solution Approach 2:
The patent replaces the software-based control mechanism with hardware-based logic circuits. The auto-negotiation process, which would traditionally require complex software management and microcontroller intervention, is implemented through hardware logic that automatically detects link partner capabilities and configures the appropriate link speed without software involvement.
2Device complexity
If simple repeater architecture is used, then the device complexity and cost are reduced, but the ability to auto-negotiate link speeds is lost
Solution Approach 1:
The patent introduces dynamic adaptability into the simple repeater architecture through hardware logic that can automatically detect link partner capabilities and adjust the link speed accordingly. The system transitions from a static, fixed-speed repeater to a dynamic one that adapts its operating parameters based on real-time detection of network conditions and partner device capabilities.
Solution Approach 2:
The repeater performs self-configuration through automatic detection of link partner abilities and autonomous selection of appropriate link speeds. The hardware logic circuits automatically negotiate and configure the connection without requiring external intervention, complex microcontroller management, or software configuration, enabling the simple device to adapt to different network scenarios.
3Adaptability or versatility
If complex software management is implemented, then advanced network protocols are supported, but software defects and field reprogramming requirements increase
Solution Approach 1:
The patent replaces software-based protocol management with hardware logic circuits that implement the necessary negotiation and configuration functions. By translating software algorithms into hardware logic, the system eliminates software bugs, memory corruption issues, and the need for field reprogramming while maintaining the ability to support advanced network protocols through dedicated hardware implementation.
Data Source
AI summary
An adaptive network repeater is disclosed for electronically connecting first and second subnetworks. The adaptive network repeater includes a first network interface coupled to the first subnetwork, a second network interface coupled to the second subnetwork, and a controller that monitors communication link status between the first and second subnetworks across the adaptive network repeater. Data received from the first subnetwork at the first network interface is retransmitted to the second subnetwork through the second network interface, and data received from the second subnetwork at the second network interface is retransmitted to the first subnetwork through the first network interface. When the controller determines that the first and second subnetworks want to communicate across the adaptive network repeater at incompatible communication speeds, the controller determines a compatible communication speed and causes the first and second subnetworks to communicate across the adaptive network repeater at the compatible communication speed.