Wireless Protection Zones for Interference Avoidance

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Solution Overview

Problem

Wireless communication systems face challenges in minimizing interference, especially when receivers or transmitters move, as existing methods are inadequate in preventing interference in dynamic environments, leading to performance degradation and potential regulatory violations.

Innovation Solution

A system that determines location information and antenna properties for unintended receivers in a wireless communication network, computes protection zones to prevent interference by determining whether a terminal's transmission would interfere with these receivers, allowing or denying transmissions based on location and interference risk.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If common interference minimization methods (frequency bands, polarizations, multiplexing) are used, then interference is reduced for fixed transmitters and receivers, but performance degrades when receivers or transmitters move dynamically

Engineering Contradiction:

Improveinterference protectionVSAvoiddynamic environment adaptation

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The system pre-computes protection zones for each unintended receiver based on their location information and antenna properties before dynamic movement occurs. These protection zones are stored and readily available when a transmitter needs to determine whether transmission is safe, enabling rapid decision-making in dynamic environments without real-time calculation delays

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system dynamically updates the transmitter's location information and re-evaluates protection zone boundaries in real-time as transmitters and receivers move. The terminal continuously monitors its position and determines whether it remains within any protection zone, allowing the system to adapt to changing spatial relationships while maintaining interference protection

Inventive Principle:

Principle #15Dynamics

2Reliability

If protection zones are computed for all unintended receivers, then interference avoidance is ensured, but computational complexity and data processing requirements increase

Engineering Contradiction:

Improveinterference avoidanceVSAvoidcomputation complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system divides the overall interference protection problem into individual protection zones for each unintended receiver. Each protection zone is computed and stored independently, allowing the terminal to check against multiple pre-computed zones rather than performing a single complex global calculation, thereby simplifying real-time decision-making

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Protection zones for all unintended receivers are pre-computed and stored in the system before dynamic transmission occurs. This preliminary computation eliminates the need for real-time calculation of protection zones during transmission decisions, significantly reducing computational complexity at the moment of transmission while maintaining comprehensive interference avoidance

Inventive Principle:

Principle #10Preliminary action

3Productivity

If transmission is allowed without protection zone checking, then network productivity is maintained, but harmful interference with incumbent systems occurs

Engineering Contradiction:

Improvetransmission efficiencyVSAvoidinterference with incumbent systems

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The terminal autonomously determines whether transmission would cause harmful interference by checking its location against stored protection zones without requiring real-time coordination with incumbent system operators. This self-service approach allows the terminal to make immediate transmission decisions, maintaining productivity while preventing interference through automatic protection zone compliance

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS10602371B2Computing protection zones for avoidance of interference in wireless communications

Publication Date: 2020.03.24 HIGHER GROUND LLC

AI summary

In one embodiment, a device of a first wireless communication network determines location information and antenna properties corresponding to each of a plurality of unintended receivers of a second wireless communication network. The device may then compute a protection zone for each of the plurality of unintended receivers based on the location information and antenna properties, wherein a protection zone defines a geographical area where transmission by a terminal in the first wireless communication network might interfere with operation of a corresponding unintended receiver. As such, the terminal may thus determine whether to perform or prevent an attempted transmission to an intended receiver in the first wireless communication network based on whether a current location of the terminal, at a time of the attempted transmission by the terminal, is within any protection zone of the plurality of unintended receivers.