Radar Server Beam Coordination for Bistatic TRP Interference Control

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Solution Overview

Problem

Bistatic and multi-static radars face challenges in wide adaptation due to the need for improved techniques to enhance their operation and implementation scenarios, primarily due to the separation of transmitter and receiver equipment, which can lead to self-interference issues.

Innovation Solution

A radar server is implemented within a wireless communications system to provide transmit and receive beam parameters to TRPs, configuring beams for radar operations, leveraging existing wireless communications infrastructure to mitigate self-interference and enable flexible bandwidth utilization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If transmitter and receiver are physically separated to mitigate self-interference, then self-interference is reduced, but device complexity and coordination requirements increase

Engineering Contradiction:
Improveself-interferenceVSAvoidsystem coordination complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

A radar server is introduced as an intermediary component that receives radar requests from application functions, determines appropriate transmitter and receiver TRPs, and coordinates their operation. This mediator manages the complexity of coordinating physically separated transmitter and receiver equipment, allowing self-interference mitigation while maintaining system manageability through centralized control logic.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If transmitter and receiver are separated by distance comparable to target distance, then self-interference is avoided, but measurement precision and detection capability deteriorate

Engineering Contradiction:
Improveself-interferenceVSAvoidtarget detection precision
Core Design Contradiction:
Object-affected harmful factorsVSMeasurement precision

Solution Approach 1:

The system dynamically selects different transmitter and receiver TRPs based on radar requests and target locations. Rather than using fixed distant TRPs that would reduce precision, the radar server can choose TRP pairs that optimize both separation for self-interference mitigation and proximity for measurement precision, adapting the configuration dynamically to operational requirements.

Inventive Principle:
Principle #15Dynamics

3Ease of manufacture

If existing wireless communications infrastructure is leveraged for radar operations, then ease of manufacture and deployment improve, but adaptability to different radar scenarios may be limited

Engineering Contradiction:
Improvedeployment easeVSAvoidradar operation adaptability
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The radar server is designed to handle multiple types of radar operations (bistatic, multi-static, monostatic) and can allocate any TRP in the wireless communications network for radar functions. The system provides universal interfaces for different radar scenarios while leveraging the existing wireless infrastructure, achieving both ease of deployment and operational versatility through a unified multi-functional platform.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

Enables efficient radar operations by coordinating transmitter and receiver equipment, allowing for flexible utilization of bandwidth and leveraging existing wireless communications systems to perform radar functions, such as range, angle, and Doppler frequency estimation.

Implementation Method 1

configuring a transmit beam for sending a transmit signal from the first wireless communications TRP

Methodology Applied
Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Implementation Method 2

receiving, at the second wireless communications system TRP, an echo signal from one or more targets as a reflection of the transmit signal

Methodology Applied
Scientific EffectElectromagnetic reflection: Reflection

Data Source

PatentUS12523740B2Server-assisted beam coordination for bistatic and multi-static radar operation in wireless communications networks
Publication Date: 2026.01.13 QUALCOMM INC
  • US12523740B2 patent drawing
  • US12523740B2 patent drawing
  • US12523740B2 patent drawing

AI summary

A method for supporting radar operations may involve providing, from a radar server, one or more transmit beam parameters, over one or more wired or wireless interfaces, to a first wireless communications system Transmission Reception Point (TRP) for configuring a transmit beam for sending a transmit signal from the first wireless communications TRP. The method may further involve providing, from the radar server, one or more receive beam parameters, over one or more wired or wireless interfaces, to a second wireless communications system TRP for configuring a receive beam for receiving, at the second wireless communications system TRP, an echo signal from one or more targets as a reflection of the transmit signal. The first wireless communications system TRP and the second wireless communications system TRP may be part of a wireless communications system.