Stateful Layer 2 Energy Parameter Negotiation Protocol

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Solution Overview

Problem

As data transmission rates increase in Ethernet networks, so does power consumption, necessitating new technologies that balance higher data rates with energy efficiency, which conventional methods fail to effectively manage due to outdated parameter synchronization issues.

Innovation Solution

A stateful negotiation protocol for energy-efficient parameters in Layer 2, where network devices exchange and verify parameter updates using LLDPDUs, ensuring up-to-date information is used for energy-saving decisions, preventing sub-optimal operations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If data transmission rates are increased in Ethernet networks, then higher data rates are achieved, but power consumption increases significantly

Engineering Contradiction:
Improvedata transmission rateVSAvoidpower consumption
Core Design Contradiction:
SpeedVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic adjustment of energy-efficient parameters (EEP) that allow network devices to transition between different operational states based on current network conditions. The stateful negotiation protocol enables devices to dynamically select from multiple power management modes, adjusting their energy consumption characteristics while maintaining required data transmission rates.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes physical and operational parameters of network devices through the EEP negotiation process. By modifying parameters such as wake-up thresholds, power save mode activation criteria, and energy management settings, the system optimizes the balance between data transmission performance and power consumption based on negotiated values between linked devices.

Inventive Principle:
Principle #35Parameter changes

2Device complexity

If energy-efficient parameters are negotiated without stateful verification, then parameter exchange is simplified, but outdated parameters cause sub-optimal energy-saving decisions

Engineering Contradiction:
Improveparameter negotiation complexityVSAvoidparameter update accuracy
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The patent implements a feedback mechanism where network devices exchange not only EEP values but also verification information indicating whether their local parameters are current. The stateful negotiation protocol includes feedback loops that allow devices to confirm parameter freshness and trigger updates when discrepancies are detected, ensuring reliable energy management decisions.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent performs preliminary verification of parameter freshness before using EEP values for energy management decisions. By checking the state and timeliness of parameters in advance of making energy-saving decisions, the system prevents sub-optimal operations caused by outdated information while maintaining efficient negotiation processes.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS8279788B2Method and system for stateful negotiation of energy efficient parameters in layer 2
Publication Date: 2012.10.02 AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE LTD
  • US8279788B2 patent drawing
  • US8279788B2 patent drawing
  • US8279788B2 patent drawing

AI summary

A method and system for stateful negotiation of energy efficient parameters in Layer 2 are provided. In this regard, energy efficiency of communications between a first network device and a second network device may be managed via an exchange of information between the network devices and a verification of whether the information is up-to-date prior to utilizing the information. In various embodiments of the invention, the second network device may generate a decision pertaining to implementing one or more energy efficient techniques and the second network device may send a message to the first network device requesting that the first network device implement the decision. The message sent to the first network device may comprise the decision as well as parameter values utilized to generate the decision. The first network device may receive the decision and the parameter values and may determine whether the received parameter values are up-to-date.