Cooperative Radar Transmit Power Adaptation for V2X Interference

Solution Overview

Problem

Conventional radar detection apparatuses in intelligent vehicles lack flexibility in adapting to variable driving environments due to fixed transmit power, leading to suboptimal performance in diverse driving conditions.

Innovation Solution

An information transmission method and apparatus that allows radar detection apparatuses to adjust transmit power based on indication information received through interfaces with processing or communications apparatuses, enabling dynamic adaptation to traffic lights and road congestion to reduce interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If fixed transmit power is used in radar detection apparatus, then device complexity is reduced and operation is simplified, but adaptability to variable driving environments deteriorates and detection precision is reduced

Engineering Contradiction:

Improveadaptability to variable driving environmentsVSAvoidcomplexity of power adjustment mechanism

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements dynamic transmit power adjustment by enabling the radar detection apparatus to change its power levels based on real-time driving environment conditions. The system transitions from a static fixed-power mode to a dynamic adaptive-power mode where transmit power is continuously adjusted according to detected environmental parameters such as presence of other vehicles, traffic conditions, and detection ranges, thereby resolving the contradiction between adaptability and complexity.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent employs feedback mechanisms where the radar system continuously monitors driving environment conditions and uses this information to adjust transmit power levels. The control unit receives environmental data, processes it according to predefined power adjustment rules, and modifies the transmit power accordingly. This closed-loop feedback system enables automatic adaptation to varying driving conditions without requiring complex manual intervention or system redesign.

Inventive Principle:

Principle #23Feedback

2Measurement precision

If fixed transmit power is used in radar detection apparatus, then energy consumption is simplified to manage, but detection precision and performance in diverse environments deteriorates

Engineering Contradiction:

Improveprecision detection capabilityVSAvoidtransmit power consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent changes the power consumption parameter dynamically by adjusting transmit power levels based on driving environment conditions. The system implements multiple power modes (e.g., high power for long-range detection, low power for short-range or congested environments) and switches between them according to real-time requirements. This parameter adjustment enables the radar to achieve high detection precision when needed while reducing energy consumption during normal operating conditions, resolving the contradiction between precision and energy usage.

Inventive Principle:

Principle #35Parameter changes

3Object-generated harmful factors

If fixed transmit power is used in radar detection apparatus, then system operation is simplified, but interference between different radar systems increases

Engineering Contradiction:

Improveinterference between radar systemsVSAvoidsimplicity of power control

Core Design Contradiction:

Object-generated harmful factorsVSEase of operation

Solution Approach 1:

The patent implements dynamic transmit power adjustment by enabling the radar detection apparatus to change its power levels based on real-time driving environment conditions. The system transitions from a static fixed-power mode to a dynamic adaptive-power mode where transmit power is continuously adjusted according to detected environmental parameters such as presence of other vehicles, traffic conditions, and detection ranges, thereby resolving the contradiction between adaptability and complexity.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent employs feedback mechanisms where the radar system continuously monitors driving environment conditions and uses this information to adjust transmit power levels. The control unit receives environmental data, processes it according to predefined power adjustment rules, and modifies the transmit power accordingly. This closed-loop feedback system enables automatic adaptation to varying driving conditions without requiring complex manual intervention or system redesign.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12626588B2Information transmission method and information transmission apparatus

Publication Date: 2026.05.12 YINWANG INTELLIGENT TECHNOLOGIES CO LTD

AI summary

This application provides an information transmission method and apparatus, relates to interference processing of a cooperative radar, and is applicable to internet of vehicles scenarios, such as a vehicle-to-everything (V2X) scenario, a long term evolution-vehicle (LTE-V) scenario, and a vehicle-to-vehicle (V2V) scenario. Therefore, information related to a transmit power can be transmitted through an interface of a radar detection apparatus, and a capability of an automated driving system or an advanced driver assistant system (ADAS) is improved, to adapt to a variable driving environment. The information transmission method includes: A first detection apparatus receives indication information, where the indication information is used to indicate the first detection apparatus to determine a first transmit power used for transmitting a radar signal; and the first detection apparatus determines the first transmit power based on the indication information.