Wireless Channel Feedback Under Sporadic Interference

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Solution Overview

Problem

Wireless communication devices face inaccurate feedback due to interference from coexisting transceivers and neighboring devices, leading to degraded performance as sporadic interference can result in temporary and unpredictable changes in communication channel conditions.

Innovation Solution

A wireless communication device equipped with an interference module to detect and predict interference, and a feedback module that generates adapted feedback by minimizing the impact of sporadic interference, ensuring accurate representation of the communication channel conditions to the transmitter.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If feedback is generated using standard measurement procedures, then feedback can be provided to the transmitter, but the feedback becomes inaccurate due to sporadic interference from coexisting transceivers and neighboring devices

Engineering Contradiction:

Improvefeedback accuracyVSAvoidsporadic interference

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary interference detection and classification before generating feedback measurements. The receiver identifies types of interference (e.g., from WiFi transceivers, Bluetooth devices, or neighboring base stations) and determines whether they are constant or sporadic in nature, then adjusts the measurement procedure accordingly to avoid or account for the interference when generating feedback

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system changes measurement parameters dynamically based on detected interference characteristics. When sporadic interference is detected, the receiver adjusts measurement timing, frequency selection, or resource block choices to measure channel conditions during interference-free periods, thereby maintaining measurement accuracy despite the presence of potential interferers

Inventive Principle:

Principle #35Parameter changes

2Productivity

If measurements are taken during periods of interference, then feedback can be generated quickly, but the feedback reflects degraded channel conditions rather than true channel quality

Engineering Contradiction:

Improvefeedback generation speedVSAvoidchannel condition representation

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The receiver performs preliminary detection of interference patterns and identifies time-frequency resources that are free from sporadic interference. Based on this preliminary analysis, the system selects optimal measurement opportunities that avoid interference while still meeting feedback timing requirements, ensuring both speed and accuracy

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The measurement procedure is made dynamic and adaptive rather than static. The system continuously monitors interference conditions and adjusts measurement timing and resources in real-time, allowing feedback generation to proceed at appropriate speeds while reliably representing true channel conditions by measuring only during interference-free periods

Inventive Principle:

Principle #15Dynamics

3Measurement precision

If the receiver attempts to distinguish between constant and sporadic interference, then more accurate feedback can be generated, but the complexity of the feedback generation process increases

Engineering Contradiction:

Improveinterference characterization accuracyVSAvoidfeedback generation complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The interference detection and classification process is segmented into distinct, manageable stages: (1) detecting presence of interference, (2) classifying interference type based on characteristics, (3) determining whether interference is constant or sporadic, and (4) selecting appropriate measurement strategies. This segmentation reduces overall complexity by breaking down the complex task into simpler, sequential steps

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system employs feedback loops where measurement results and interference patterns are continuously analyzed to refine interference classification. The receiver uses historical interference data and patterns to improve classification accuracy over time, reducing the complexity of real-time decision-making while maintaining high precision in distinguishing between constant and sporadic interference

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS9596615B1Method and apparatus for assessing a condition of a wireless channel in view of feedback under strong and sporadic interference received over the wireless channel

Publication Date: 2017.03.14 MARVELL ASIA PTE LTD

AI summary

A wireless communication device including an interference module and a feedback generation module. The interference module is configured to detect interference on a communication channel, identify types of the interference detected on the communication channel, and provide information about the types of the interference detected on the communication channel. The feedback generation module is configured to receive a request, from a transmitter, for feedback about a condition of the communication channel, and, based on the request and the information about the types of the interference detected on the communication channel, determine a measurement region of the communication channel, generate the feedback about the condition of the communication channel using measurements taken, by a receiver, in the measurement region as determined by the feedback generation module, and provide the feedback to the transmitter.