Ethernet Link Simplex Mode Power Reduction
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Solution Overview
Problem
Conventional Ethernet transmission technologies face challenges in achieving higher data rates without significant increases in power consumption, as higher data rates require more sophisticated signal processing and complex circuitry, leading to increased energy usage.
Innovation Solution
Implementing a method and system that allows Ethernet links to operate in simplex or duplex transmission modes based on determined conditions, such as link utilization and error rates, enabling components like receivers and transmitters to switch to lower power modes, thereby reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If higher data rates are implemented in Ethernet transmission, then transmission speed is improved, but power consumption increases significantly
Solution Approach 1:
The Ethernet link dynamically switches between simplex and duplex transmission modes based on real-time conditions such as link utilization and error rates. This dynamic adaptation allows the system to operate at higher data rates when necessary while reducing to lower power modes when full performance is not required, thereby resolving the contradiction between speed and power consumption
Solution Approach 2:
The system changes operational parameters by transitioning between different transmission modes (simplex/duplex) and power states. By monitoring link conditions and adjusting the transmission mode accordingly, the system optimizes the balance between data rate performance and power consumption, implementing higher data rates only when conditions warrant the increased energy usage
2Speed
If sophisticated signal processing is used to achieve higher data rates, then transmission capability is improved, but device complexity increases
Solution Approach 1:
The patent segments the transmission capability into distinct modes (simplex and duplex), each with appropriate signal processing requirements. Rather than always employing complex full-duplex signal processing, the system divides operation into segments where simpler processing suffices, reducing overall device complexity while maintaining the capability for high data rates when needed
Solution Approach 2:
The system applies signal processing at the appropriate level for each transmission mode. Full sophisticated signal processing is applied only when duplex high-speed transmission is required, while simplex mode uses reduced processing. This partial application of complex processing resolves the contradiction by providing high data rate capability without permanently implementing the complexity
3Speed
If components operate in high power modes to maintain high data rates, then transmission performance is improved, but energy efficiency deteriorates
Solution Approach 1:
The system periodically monitors link conditions (utilization, error rates) and adjusts transmission modes accordingly. This periodic assessment allows components to alternate between high-power high-performance modes and low-power energy-efficient modes, achieving both good transmission performance when needed and improved energy efficiency during normal operation
Solution Approach 2:
The patent implements feedback mechanisms that monitor link utilization and error rates, using this information to dynamically adjust transmission modes. This feedback loop ensures that high power consumption is applied only when it actually improves performance, while energy-efficient modes are used when full performance is not required, optimizing the balance between transmission performance and energy efficiency
Data Source
AI summary
Ethernet link partners within an Ethernet network, coupled via an Ethernet link comprising one or more channels may be configured to operate in simplex mode based on determined condition(s) during communications via the one or more channels. The determined condition(s) may comprise utilization or load, current/past conditions and/or link statistics that may comprise one or more of packet error rate (PER), bit error rate (BER), and/or signal to noise ratio (SNR). In addition, one or more of the channels may be transitioned to a lower power mode with a zero data rate. In some embodiments of the invention, one or more of a plurality of operational changes may occur during simplex mode operation. For example, power may lowered for one or more components that enable communication such as receivers, transmitters, near-end cross talk cancellers, far-end cross talk cancellers and/or echo cancellers.