Wireless Link Interference Reduction via Dynamic Filtering

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Solution Overview

Problem

The increasing complexity of co-existing interference in wireless communication terminals, particularly harmonic and intermodulation interference between multiple communication links in dual- or multi-connectivity states, leads to significant deterioration in radio frequency and data performance.

Innovation Solution

A method that involves determining a target wireless communication link with interference, performing interference scanning detection to evaluate interference effects, and using a preset filter module to implement a filtering regulation strategy, thereby reducing co-existing interference by filtering out affected frequency points or bands.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple wireless communication mode links are used for communication terminals, then communication functionality and coverage are improved, but co-existing interference (harmonic and intermodulation interference) increases

Engineering Contradiction:

Improvecommunication functionalityVSAvoidco-existing interference

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent extracts and removes the interfering frequency components from the communication signals using filtering techniques. Specifically, it identifies harmonic and intermodulation interference frequencies and applies filters to extract and eliminate these harmful frequency components while preserving the desired communication signals.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces an intermediary filtering mechanism between the multiple communication links to prevent interference. The filter acts as a mediator that allows desired signals to pass through while blocking harmful harmonic and intermodulation interference frequencies generated by the coexistence of multiple links.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If interference filtering is applied to reduce co-existing interference, then wireless performance and throughput are improved, but device complexity increases

Engineering Contradiction:

Improvewireless performanceVSAvoidfiltering system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent performs preliminary interference analysis and identification before applying filtering. It first scans and detects the interference characteristics of different communication links, identifies the specific harmonic and intermodulation frequencies involved, and then configures the filtering parameters accordingly. This preliminary action allows the system to apply only the necessary filtering, reducing overall complexity.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements dynamic filtering where the filtering parameters are adjusted based on the detected interference conditions. The system continuously monitors the communication environment and adapts the filter settings to match the actual interference patterns, rather than using fixed complex filtering for all scenarios. This dynamic approach optimizes the balance between performance and complexity.

Inventive Principle:

Principle #15Dynamics

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This approach effectively mitigates co-existing interference, improving the wireless performance and throughput of communication links by selectively filtering out interfering frequencies, thus enhancing the overall communication quality.

Implementation Method 1

a preset filter module matched with the target wireless communication mode link is controlled to perform a filtering process according to the filtering regulation strategy

Methodology Applied

Scientific EffectFiltering: Filter (electronic)

Data Source

PatentUS12107796B2Co-existing interference reduction method, communication device, and readable storage medium

Publication Date: 2024.10.01 ZTE CORP

AI summary

Provided is a co-existing interference reduction method, which includes: a target wireless communication mode link with a co-existing interference is determined, the co-existing interference including harmonic interference and intermodulation interference; interference scanning detection is performed on the link in a coexistence state so as to obtain values corresponding to a co-existing interference effect evaluation parameter of the link in case of different values of a modulation control parameter; a filtering regulation strategy corresponding to the link is determined according to an interference scanning detection result; and a preset filter module matched with the link is controlled to perform a filtering process according to the filtering regulation strategy so as to reduce a co-existing interference effect on the link.