User Equipment IRC Receiver Selection via Dominant Interferer Proportion

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Solution Overview

Problem

In wireless communication systems, the use of Interference Rejection Combining (IRC) receivers can increase power consumption and may not provide performance gains in low interference environments, leading to potential performance deterioration compared to not using IRC receivers.

Innovation Solution

A method for user equipment (UE) to dynamically select the use of IRC receivers based on a Dominant Interferer Proportion (DIP) estimation parameter calculated from a covariance matrix, determining whether to employ the IRC receiver by comparing the estimated DIP with a threshold.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the IRC receiver is used, then interference rejection performance is improved, but power consumption increases

Engineering Contradiction:

Improveinterference rejection performanceVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic selection between IRC receiver and conventional receiver based on real-time interference conditions. The UE calculates DIP estimation parameters from received signals and compares them against thresholds to dynamically switch receiver modes, ensuring IRC is only activated when interference levels justify the additional power consumption.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the operational state of the receiver system by switching between different receiver types (IRC vs. conventional) based on calculated DIP parameters. This parameter-based decision-making allows the system to adapt to varying interference conditions and optimize power consumption accordingly.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If the IRC receiver is used, then interference rejection performance is improved, but device complexity increases

Engineering Contradiction:

Improveinterference rejection performanceVSAvoidreceiver complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system dynamically adjusts receiver complexity by selecting IRC only when necessary. The UE continuously monitors interference conditions through DIP parameter calculation and adapts the receiver configuration in real-time, using the more complex IRC architecture only when interference levels warrant it.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent modifies the operational parameters of the receiver system by switching between different receiver architectures based on calculated DIP values. This allows the system to optimize the balance between performance and complexity by activating the more complex IRC receiver only when interference conditions justify it.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If the IRC receiver is used in low interference environments, then power consumption increases, but performance gain is not achieved

Engineering Contradiction:

Improvereception performanceVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic adaptation to environmental conditions by continuously calculating DIP parameters from received signals and adjusting receiver selection accordingly. In low interference environments, the system automatically selects conventional receivers, avoiding unnecessary power consumption while maintaining optimal performance.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes its operational state based on calculated DIP parameters that reflect current interference conditions. When DIP values indicate low interference, the system transitions to using conventional receivers, thereby eliminating wasteful power consumption without sacrificing reception performance.

Inventive Principle:

Principle #35Parameter changes

4Reliability

If the IRC receiver is used in low interference environments, then device complexity increases, but performance gain is not achieved

Engineering Contradiction:

Improvereception performanceVSAvoidreceiver complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system dynamically adapts to environmental conditions by monitoring DIP parameters and adjusting receiver selection in real-time. In low interference environments, the system automatically selects simpler conventional receivers, avoiding unnecessary complexity while maintaining optimal reception performance.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent modifies the operational parameters of the receiver system based on calculated DIP values that reflect current interference conditions. When DIP indicates low interference, the system transitions to using conventional receivers, thereby optimizing the balance between performance and device complexity.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS10206178B2Methods and apparatus for using IRC receiver selectively by a user equipment

Publication Date: 2019.02.12 LG ELECTRONICS INC

AI summary

Provided are a method of selectively using an interference rejection combining (IRC) receiver by a user equipment (UE) in a wireless communication system, and an apparatus supporting the same. The UE may calculate a dominant interferer proportion (DIP) estimation parameter based on a covariance matrix, may estimate a DIP based on the DIP estimation parameter, and may determine whether to use the IRC receiver based on the estimated DIP and a DIP threshold.