Orientation-Based Radar Frequency Allocation to Reduce Interference
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Solution Overview
Problem
Interference between detection apparatuses, such as vehicle-mounted radars, reduces detection accuracy and increases false alarm probabilities in intelligent vehicles, compromising driving safety and comfort.
Innovation Solution
A signal transmission method that determines a first available frequency band based on the orientation of a detection apparatus, using one of N frequency bands corresponding to N orientation ranges, to standardize frequency band selection and reduce interference between detection apparatuses with opposite orientations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If detection apparatuses use the same frequency band to transmit signals, then the system is simple and easy to implement, but interference between detection apparatuses increases, reducing detection accuracy
Solution Approach 1:
The patent divides the available frequency band into multiple frequency bands (first frequency band, second frequency band, etc.) and assigns different frequency bands to detection apparatuses based on their orientation ranges. This segmentation of the frequency resource eliminates interference between apparatuses while maintaining system simplicity through standardized assignment rules.
Solution Approach 2:
The patent assigns different frequency bands to detection apparatuses based on their specific orientation ranges. Each apparatus receives a frequency band tailored to its local orientation characteristics, ensuring that apparatuses with overlapping orientation ranges use different frequency bands, thereby eliminating interference while adapting to local requirements.
2Quantity of substance
If detection apparatuses with opposite orientations use the same frequency band, then resource utilization is high, but interference between apparatuses increases, causing false alarms
Solution Approach 1:
The patent segments the frequency band into multiple distinct frequency bands and assigns them based on orientation ranges. This ensures that detection apparatuses with opposite or overlapping orientations use different frequency bands, eliminating interference and false alarms while maintaining efficient resource utilization through systematic assignment.
Solution Approach 2:
The patent introduces an intermediary mechanism (frequency band assignment based on orientation range) that mediates between the conflict of resource utilization and interference avoidance. This intermediary rule systematically assigns frequency bands to prevent interference while maximizing resource usage efficiency.
3Object-affected harmful factors
If frequency bands are divided into N equal parts for N orientation ranges, then interference is reduced, but the bandwidth available for each orientation range decreases
Solution Approach 1:
The patent dynamically adjusts the frequency band assignment based on the specific orientation ranges of detection apparatuses. Instead of fixed equal division, the system adapts the frequency band allocation to match the actual orientation requirements, ensuring sufficient bandwidth for each apparatus while preventing interference between apparatuses with overlapping orientations.
Data Source
AI summary
A signal transmission method and an apparatus can be used in the field of autonomous driving, intelligent driving, or self driving. In embodiments of this application, a total available frequency band of a detection apparatus includes N frequency bands with same bandwidths, the N frequency bands respectively correspond to N orientation ranges, and N is an integer greater than 1. When the detection apparatus transmits a signal, a first available frequency band of the signal is determined based on an orientation of the detection apparatus, the signal is transmitted on the first available frequency band, and the first available frequency band is one of the N frequency bands. In this way, detection apparatuses in different orientation ranges use different frequency bands to transmit signals. In this way, selection of a transmission frequency band of a detection apparatus can be standardized, and interference between detection apparatuses can be reduced.