Asymmetric Ethernet Operation for Energy Efficiency
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Solution Overview
Problem
Conventional Ethernet networks face challenges in achieving higher data rates without significant increases in power consumption, which is exacerbated by the growing number of devices and data-intensive applications.
Innovation Solution
Implementing a method and system for asymmetric operation in network nodes that allow for multi-rate communication, where uplink and downlink data rates can be configured differently based on factors like power consumption, bit error rate, and data load, enabling reduced power usage and improved energy efficiency by adjusting data rates at designated byte or LDPC frame boundaries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If higher data rates are implemented to meet increasing communication demands, then data transmission capability is improved, but power consumption increases significantly
Solution Approach 1:
The patent implements dynamic data rate adjustment where the network node can operate at different data rates (e.g., 10 Gbps, 1 Gbps, or lower) depending on traffic conditions. The system dynamically transitions between full-rate and reduced-rate operation, allowing high data rates when needed while consuming less power during low-traffic periods, thus resolving the contradiction between transmission capability and power consumption
Solution Approach 2:
The patent changes the operational parameters of the network node by adjusting the data rate based on monitored factors such as power consumption levels, bit error rate, and data load. By modifying the data rate parameter, the system achieves high productivity when required while reducing power consumption during normal operation, effectively resolving the technical contradiction
2Ease of operation
If symmetric data rates are used for both uplink and downlink, then communication simplicity is maintained, but energy efficiency is reduced when traffic patterns are asymmetric
Solution Approach 1:
The patent introduces asymmetric data rate operation where the uplink and downlink can operate at different data rates independently. This allows the system to match data rates to actual traffic patterns - for example, using higher downlink rates for video streaming while maintaining lower uplink rates for control signals - thereby improving energy efficiency without significantly complicating the communication protocol
Solution Approach 2:
The system dynamically adjusts uplink and downlink data rates based on monitored traffic conditions and power consumption factors. This dynamic adaptation allows the communication system to maintain simplicity during symmetric traffic while achieving energy efficiency during asymmetric traffic patterns, resolving the contradiction between operational simplicity and energy efficiency
Data Source
AI summary
An Ethernet network comprises multi-rate link partners that may be operable to communicate symmetrically and/or asymmetrically via any of a plurality of channels. The multi-rate link partners may monitor one or more factors that may affect their power consumption and/or energy efficiency. During operation, an uplink and/or downlink communication rate may be configured, based on the monitoring, to enable asymmetrical data rate operation. The monitored factors may comprise prior or current data rates, bit error rate, packet error rate, latency, queued data and/or tasks, for example. The multi-rate link partners may comprise a twisted pair PHY, an optical PHY or a backplane PHY. In order to reduce power consumption and/or improve energy efficiency, one or more of the uplink communication rate and/or the downlink communication rate may be lowered. The power consumption may be reduced for a multi-rate PHY, a host computer and/or a MAC controller.