Dynamic Link Group Power Management for Bandwidth Efficiency

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Solution Overview

Problem

Link group-based communication systems waste system resources and power by maintaining all links active even when traffic is low, as they generate a high-bandwidth logical link by grouping multiple physical links, leading to inefficient power usage.

Innovation Solution

A link group management system that dynamically switches physical links between active and power save modes based on measured traffic levels, redistributing packets to optimize power usage by activating only the necessary links for packet transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If all physical links are kept active to form a high-bandwidth logical link, then the link group can handle traffic greater than individual link bandwidth, but system resources and power are wasted when traffic is small

Engineering Contradiction:
Improvebandwidth capacityVSAvoidpower consumption
Core Design Contradiction:
ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent applies dynamics by making the link activation state changeable rather than fixed. The link group management unit dynamically adjusts the activation state of individual physical links based on real-time traffic conditions, transitioning between active and power save modes to optimize the balance between bandwidth capacity and power consumption.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes the operational parameter of link activation status based on traffic conditions. By monitoring average traffic amounts and adjusting the number of active links accordingly, the system adapts its capacity parameter to match actual demand, reducing power consumption when full capacity is not needed.

Inventive Principle:
Principle #35Parameter changes

2Productivity

If all physical links are activated to ensure high bandwidth capacity, then traffic can be evenly distributed across all links, but system resources are wasted during low traffic periods

Engineering Contradiction:
Improvetraffic processing capacityVSAvoidpower waste
Core Design Contradiction:
ProductivityVSLoss of energy

Solution Approach 1:

The patent applies partial action by activating only the necessary number of links required to handle current traffic loads, rather than keeping all links active. The link group management unit determines the minimum required active links based on monitored traffic conditions, avoiding excessive resource allocation during low demand periods.

Inventive Principle:
Principle #16Partial or excessive action

Solution Approach 2:

The patent implements feedback by having the link status monitoring unit continuously monitor average traffic amounts and feed this information back to the link group management unit. This feedback loop enables the management unit to adjust link activation states based on actual traffic conditions, optimizing the balance between capacity and energy efficiency.

Inventive Principle:
Principle #23Feedback

3Use of energy by moving object

If the number of active links is reduced to save power, then power consumption decreases, but the ability to handle high traffic volumes is compromised

Engineering Contradiction:
Improvepower consumptionVSAvoidbandwidth capacity
Core Design Contradiction:
Use of energy by moving objectVSProductivity

Solution Approach 1:

The patent uses dynamics to enable flexible adjustment of active link numbers based on traffic conditions. The system can dynamically scale the number of active links up when high bandwidth capacity is needed and down when power saving is prioritized, providing adaptability between these two opposing requirements.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent applies preliminary action by having the link group management unit proactively adjust link activation states based on predicted or monitored traffic patterns, rather than reacting passively to traffic changes. This allows the system to optimize power consumption in advance while ensuring capacity is available when needed.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS8837308B2Power efficient link group communication apparatus and method
Publication Date: 2014.09.16 ELECTRONICS & TELECOMM RES INST
  • US8837308B2 patent drawing
  • US8837308B2 patent drawing
  • US8837308B2 patent drawing

AI summary

A power-efficient link group-based communication system is provided. In link group-based communication, according to the amount of transmitted traffic, an appropriate number of links in a link group are set to active mode to be used for traffic transmission, and the rest of the links in the link group are set to power save mode, thereby not transmitting traffic. Thus, efficient power reduction in the link group-based communication can be realized.