PHY Device Energy Efficiency Control via Dynamic Mode Selection
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Solution Overview
Problem
As the demand for Ethernet connectivity increases due to the rise of portable devices, there is a need for reducing power consumption in Ethernet networks while maintaining compatibility with existing infrastructure and minimizing network component redesign.
Innovation Solution
A method and system for controlling energy efficiency in physical layer devices through the execution of energy-efficient networking control policies, which allow for mode selection, component reconfiguration, memory allocation, and memory de-allocation based on operational requirements, enabling low power idle and subset PHY modes to optimize energy usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If Ethernet networking is implemented in portable devices, then connectivity and data exchange capability are improved, but power consumption increases
Solution Approach 1:
The PHY device dynamically transitions between different operational states (active and low-power idle) based on traffic conditions. The system adjusts its power consumption characteristics in real-time by entering low-power states during idle periods while maintaining full Ethernet connectivity capability when needed.
Solution Approach 2:
The invention changes the operational parameters of the PHY device by introducing a low-power idle state with modified electrical characteristics. This allows the device to maintain Ethernet connectivity while operating with reduced power consumption during idle periods, directly addressing the power consumption issue.
2Use of energy by moving object
If energy efficiency measures are implemented, then power consumption is reduced, but compatibility with existing network infrastructure may be compromised
Solution Approach 1:
The PHY device is designed with multi-functionality to operate in both standard active mode and low-power idle mode while maintaining compatibility with existing Ethernet infrastructure. The device can universally interface with traditional network components while adding energy-efficient operations, ensuring backward compatibility.
Solution Approach 2:
The invention introduces an intermediary low-power idle state that acts as a bridge between full-power operation and complete shutdown. This intermediate state maintains sufficient electrical characteristics to remain compatible with existing Ethernet infrastructure while achieving energy savings.
3Use of energy by moving object
If PHY device components are reconfigured for low-power mode, then energy efficiency is improved, but data transmission delay may increase
Solution Approach 1:
The system performs preliminary actions by entering low-power idle state in advance during known idle periods. By anticipating traffic patterns and proactively transitioning to low-power mode, the system minimizes the frequency of state transitions and reduces overall power consumption while managing delay through predictive behavior.
Solution Approach 2:
The PHY device employs periodic monitoring of traffic conditions to determine when to transition between active and low-power states. This periodic action allows the system to rhythmically switch states based on traffic patterns, achieving energy savings while maintaining responsive data transmission when traffic arrives.
Data Source
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AI summary
Aspects of a method and system for physical layer control of energy efficiency and associated policies in a physical layer device. In this regard, operation of a PHY device may be controlled based on one or more energy efficient networking (EEN) control policies executed from within the PHY device. The one or more control policies may enable management of power consumption associated with communication of data via the PHY device. A mode of operation of the PHY device may be selected based on the control policy. One or more components of the PHY device may be reconfigured based on the selected mode of operation. The selected mode of operation may comprise a low power idle (LPI) mode of operation or a subset PHY mode of operation. The control policy may be executed within the PHY device utilizing hardware, software, and/or firmware within the PHY device.