Intra-vehicle Radar Handover for Seamless Target Tracking
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Solution Overview
Problem
In wireless communications systems, multiple radar components in a vehicle UE may struggle to efficiently share tracking information, leading to inefficient target tracking or detection when a target moves from one field of view to another.
Innovation Solution
Implementing an intra-vehicle radar handover procedure that allows a vehicle UE to predict the trajectory of a target based on motion data from one radar component and transfer this information to another radar component, enabling seamless tracking across different fields of view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple radar components independently track targets without sharing information, then each radar component can operate autonomously, but target tracking efficiency deteriorates when targets move between fields of view
Solution Approach 1:
The patent merges tracking information from multiple radar components by implementing a handover procedure where a source radar component transfers tracked target data to a target radar component. This allows the system to function as a unified multi-radar tracking system, improving target tracking efficiency when targets move between fields of view while maintaining autonomous operation of individual components.
Solution Approach 2:
The patent introduces a handover procedure as an intermediary mechanism that facilitates information transfer between radar components. The procedure acts as a mediator that receives tracking information from a source radar component, processes it through trajectory prediction, and delivers it to the appropriate target radar component, enabling efficient information sharing without direct peer-to-peer communication between radars.
2Reliability
If radar components perform redundant target detection measurements, then target detection reliability improves, but signaling overhead and latency increase
Solution Approach 1:
The patent applies preliminary action by having the source radar component perform trajectory prediction of the target before the target actually enters the target radar component's field of view. This advance preparation allows the target radar to immediately associate the predicted trajectory with the actual target detection, eliminating the need for redundant detection measurements and reducing both latency and signaling overhead while maintaining detection reliability.
3Measurement precision
If radar components perform redundant target detection measurements, then target detection accuracy improves, but the number of measurements required increases
Solution Approach 1:
The handover procedure performs preliminary trajectory prediction and target association before actual detection by the target radar component. This advance preparation ensures that when the target radar detects the target, it can immediately associate it with the predicted trajectory from the source radar, maintaining high detection accuracy while eliminating redundant measurements and improving measurement efficiency.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE), such as a vehicle that is enabled with radar detection and ranging, may include multiple radars or radar components and may receive, at a first radar, a first radar waveform in a field of view (FOV) associated with the first radar. The UE may determine a trajectory of the target object which may indicate the target object entering a FOV of a second radar. The UE may receive, at the second radar, a second radar waveform in the FOV of the second radar and may associate the second radar waveform with the target object based on the trajectory of the target object and the second radar waveform being in the FOV of the second radar.