Network Interference Cancellation via Auxiliary Antenna Arrays

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Interference from multiple sources significantly reduces the quality of service (QoS) and quality of experience (QoE) in Fifth Generation (5G) and Long Term Evolution (LTE) wireless communication networks, limiting network performance.

Innovation Solution

The implementation of a collaborative interference and noise detection and cancellation (CINDC) system, which uses auxiliary antenna arrays and intelligent adaptive interference detection and cancellation (IAIDC) units at base station units to detect and cancel interference in real-time, employing machine learning and AI models for effective signal processing and data fusion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional wireless communication systems operate in interference-prone environments, then network coverage and connectivity are maintained, but quality of service and quality of experience significantly deteriorate due to interference from multiple sources

Engineering Contradiction:

Improvequality of serviceVSAvoidinterference from multiple sources

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent employs interference cancellation techniques that convert harmful interference signals into useful information. By detecting and estimating interference characteristics, the system reconstructs interference signals and subtracts them from received signals, thereby transforming the harmful interference into a beneficial process that improves signal quality and enables reliable communication in previously unusable environments

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent introduces auxiliary antenna arrays as intermediary elements that specifically receive interference signals without receiving the desired communication signals. These auxiliary antennas act as mediators that capture interference characteristics, which are then processed by interference detection and estimation modules to generate cancellation signals that are applied to the main reception path

Inventive Principle:

Principle #24Intermediary (Mediator)

2Measurement precision

If auxiliary antenna arrays and intelligent processing units are deployed at base stations, then interference detection and cancellation capability is improved, but device complexity and implementation cost increase

Engineering Contradiction:

Improveinterference detection accuracyVSAvoidbase station configuration

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent segments the interference cancellation function into distinct modular components: auxiliary antenna arrays for interference reception, interference detection modules for identifying interference types, estimation modules for characterizing interference parameters, and cancellation modules for generating and applying cancellation signals. This segmentation allows each component to be optimized independently and simplifies the overall system design and implementation

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The base station equips itself with autonomous interference cancellation capabilities through intelligent adaptive processing. The system automatically detects interference, estimates its characteristics, generates cancellation signals, and applies them without external intervention. This self-service approach enables the base station to adaptively respond to changing interference conditions in real-time

Inventive Principle:

Principle #25Self-service

3Productivity

If real-time interference cancellation is implemented, then signal-to-noise ratio and network performance improve, but processing requirements and computational load increase

Engineering Contradiction:

Improvenetwork performanceVSAvoidprocessing power consumption

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent implements interference cancellation selectively based on detected interference levels and types. Rather than continuously applying full interference cancellation processing, the system activates cancellation mechanisms only when interference exceeds threshold levels or when specific interference types are detected. This partial action approach reduces unnecessary computational load while maintaining effective interference mitigation when needed

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS11817912B2Network centric interference and noise cancellation in wireless networks

Publication Date: 2023.11.14 AT&T INTELLECTUAL PROPERTY I L P

AI summary

Aspects of the subject disclosure may include, for example, a method in which a processing system coupled to a communication network identifies, based on base station unit (BSU) performance measurements and network key performance indicator (KPI) measurements, a set of BSUs experiencing interference. The method further includes selecting BSUs from the identified set that are to be provided with an auxiliary antenna array; and computing, for each BSU in the identified set, parameters to be used by modules of the BSU that are local to the BSU and configured to perform interference detection, interference estimation, and/or interference cancellation; the computed parameters are used in a reconfiguration procedure for the modules of the BSU. Other embodiments are disclosed.