Base Station Radar Signal Detection and Subinterval Transmission

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Solution Overview

Problem

Wireless communication networks, particularly those using 5G NR technology, face interference issues with airborne radar signals, which can affect the safety and effectiveness of both wireless communications and radar operations.

Innovation Solution

A base station (BS) identifies radar signals during specific intervals and adjusts its transmission schedule to refrain from transmitting downlink information during certain subintervals when radar signals are present, thereby minimizing interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If wireless transmission is performed continuously to maintain high data rates, then productivity is improved, but interference with radar reception occurs

Engineering Contradiction:

Improvedata rateVSAvoidinterference with radar reception

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The base station transmits downlink information periodically in specific subintervals while refraining from transmission during other intervals when radar signals are detected. This periodic transmission pattern allows the system to maintain data communication while creating interference-free windows for radar reception, thus resolving the contradiction between continuous transmission productivity and radar reception quality.

Inventive Principle:

Principle #19Periodic action

2Object-affected harmful factors

If downlink transmission is refrained from during radar signal intervals, then interference with radar is reduced, but loss of time occurs

Engineering Contradiction:

Improveinterference with radarVSAvoidtransmission time

Core Design Contradiction:

Object-affected harmful factorsVSLoss of time

Solution Approach 1:

Instead of refraining from transmission during entire radar intervals, the base station transmits downlink information during specific subintervals within the radar intervals. This partial transmission approach allows some data communication to occur while still providing sufficient interference-free time for radar reception, thereby reducing the time loss compared to complete transmission cessation.

Inventive Principle:

Principle #16Partial or excessive action

3Productivity

If beamforming is used to increase data rates, then productivity is improved, but harmful factors generated by the system increase

Engineering Contradiction:

Improvedata rateVSAvoidinterference with radar

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The beamforming transmission is activated periodically in specific subintervals and deactivated during other intervals when radar signals are present. This periodic activation of the beamforming function allows the system to achieve high data rates during transmission intervals while eliminating interference generation during radar reception intervals, thus resolving the contradiction between productivity enhancement and harmful factor generation.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS12241995B2Methods and apparatus for operating antennas in the presence of airborne radar signals

Publication Date: 2025.03.04 QUALCOMM INC

AI summary

Aspects of the present disclosure include methods, apparatuses, and computer readable media for identifying a plurality of radar signals including a first radar signal during a first interval and a second radar signal during a second interval, identifying a first subinterval within the first interval, identifying a second subinterval within the second interval, refraining from transmitting downlink information during the first subinterval, and transmitting the downlink information during the second subinterval.