Duplex Mode Adaptive Method for Microwave Spectral Efficiency

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Solution Overview

Problem

Existing microwave communication systems face reduced capacity and quality under poor channel conditions due to the inability to adapt duplex modes, leading to inadequate spectrum utilization.

Innovation Solution

A duplex mode adaptive method and apparatus that dynamically switches between full duplex and non-full duplex modes based on signal quality and spectral efficiency calculations, optimizing spectral efficiency by selecting the most efficient duplex mode for varying channel conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If full duplex mode is used to improve spectrum utilization, then spectral efficiency is improved, but communication quality deteriorates under poor channel conditions due to self-interference

Engineering Contradiction:
Improvespectral efficiencyVSAvoidcommunication quality
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent implements dynamic duplex mode adaptation by continuously monitoring channel conditions (signal-to-noise ratio, interference levels) and switching between full duplex and non-full duplex modes. This dynamic adjustment allows the system to maximize spectral efficiency when channel conditions are good while maintaining communication quality when conditions deteriorate, thereby resolving the contradiction between productivity and reliability.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes operational parameters (duplex mode, modulation scheme, power levels) based on measured channel conditions. By adjusting these parameters dynamically, the system optimizes spectral efficiency during favorable conditions while preventing communication quality degradation during poor conditions, thus resolving the technical contradiction.

Inventive Principle:
Principle #35Parameter changes

2Quantity of substance

If full duplex mode is used to increase system capacity, then bandwidth utilization is improved, but signal attenuation under poor weather conditions causes self-interference to dominate, reducing system capacity

Engineering Contradiction:
Improvesystem capacityVSAvoidself-interference
Core Design Contradiction:
Quantity of substanceVSObject-affected harmful factors

Solution Approach 1:

The patent employs feedback mechanisms where the system continuously measures channel conditions including signal-to-noise ratio and interference levels. Based on this feedback, the system determines whether to operate in full duplex or non-full duplex mode. This feedback-driven adaptation allows the system to increase capacity when self-interference is manageable while avoiding capacity reduction when self-interference becomes dominant under poor weather conditions.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system dynamically adjusts its operational mode based on real-time channel conditions. When weather conditions are good and self-interference is low, full duplex mode maximizes system capacity. When weather conditions deteriorate and self-interference increases, the system switches to non-full duplex mode to maintain stable operation, thus resolving the contradiction between quantity and harmful factors.

Inventive Principle:
Principle #15Dynamics

3Device complexity

If duplex mode is fixed to maintain system simplicity, then device complexity is reduced, but adaptability to varying channel conditions deteriorates

Engineering Contradiction:
Improvesystem complexityVSAvoidduplex mode adaptability
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent implements dynamic duplex mode selection that adapts to varying channel conditions. The system monitors signal quality metrics and automatically switches between full duplex and non-full duplex modes, providing adaptability to different weather and channel conditions while maintaining manageable system complexity through automated decision-making algorithms.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system performs self-adjustment by automatically monitoring channel conditions and selecting the appropriate duplex mode without requiring manual intervention. This self-service capability provides adaptability to varying conditions while keeping the control mechanism relatively simple, as the system makes decisions based on pre-defined thresholds and algorithms.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS9813923B2Duplex mode adaptive method and apparatus
Publication Date: 2017.11.07 HUAWEI TECH CO LTD
  • US9813923B2 patent drawing
  • US9813923B2 patent drawing
  • US9813923B2 patent drawing

AI summary

The present invention relates to the field of network communications, and discloses a duplex mode adaptive method, including: querying the modulation mode configuration table, to obtain a maximum modulation mode of the current duplex mode and a maximum modulation mode of the non-current duplex mode; calculating maximum spectral efficiency of the current duplex mode according to the maximum modulation mode of the current duplex mode; calculating maximum spectral efficiency of the non-current duplex mode according to the maximum modulation mode of the non-current duplex mode; comparing the maximum spectral efficiency of the current duplex mode with the maximum spectral efficiency of the non-current duplex mode, and selecting a duplex mode whose spectral efficiency is greater as a next-step duplex mode; and switching a duplex mode of the wireless communications apparatus to the next-step duplex mode.