VRU Battery Signaling Control for PSM Mute and Position Accuracy
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Solution Overview
Problem
Current V2X-enabled VRU devices face issues with battery consumption and inaccurate position estimation due to frequent transmission of pedestrian safety messages (PSMs), leading to potential safety risks and inefficiencies, especially in areas with poor GNSS coverage or when multiple devices are used redundantly.
Innovation Solution
Implementing a message mute request mechanism where an RSU detects a VRU within its field of view and transmits a request to modify or pause PSM transmissions, using parameters like coordinates, timestamps, and security certificates to conserve battery life and improve accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If frequent transmission of pedestrian safety messages (PSMs) is performed, then position estimation accuracy is improved, but battery consumption increases
Solution Approach 1:
The system implements periodic transmission of PSMs at reduced frequency rather than continuous transmission. The gNodeB determines appropriate transmission intervals based on VRU presence detection, allowing position estimation to be updated periodically while significantly reducing battery consumption compared to continuous transmission.
Solution Approach 2:
The system employs feedback mechanisms where the gNodeB detects VRU presence and transmits control information to the VRU device to adjust transmission frequency. This feedback loop allows dynamic adaptation of transmission intervals based on actual presence conditions, optimizing the balance between position accuracy and energy consumption.
2Measurement precision
If continuous transmission of PSMs is performed, then position estimation is maintained, but computational load increases
Solution Approach 1:
The system transitions from continuous to periodic transmission of PSMs. The gNodeB controls the transmission timing based on VRU presence detection, reducing the computational burden on the VRU device while maintaining position estimation continuity through strategically timed updates.
Solution Approach 2:
The system extracts and removes redundant transmission operations from the continuous PSM transmission process. By detecting VRU presence and using this information to control transmission timing, the system eliminates unnecessary computational operations while preserving essential position estimation functionality.
3Measurement precision
If multiple VRU devices transmit PSMs redundantly, then position estimation accuracy is improved, but battery consumption increases
Solution Approach 1:
The system merges the functionality of multiple VRU devices by having them share common PSM transmission resources. When multiple devices detect the same VRU presence condition, they coordinate their transmission timing through gNodeB control, combining their position estimation contributions while avoiding redundant energy consumption.
Solution Approach 2:
The system implements periodic transmission control that applies uniformly across multiple VRU devices. The gNodeB manages transmission scheduling for all devices, enabling them to update position information at optimized intervals rather than continuously, thereby reducing overall energy waste while maintaining collective position estimation accuracy.
Data Source
AI summary
Systems and techniques are described herein for wireless communications. For example, a first device can detect a second device within a region of interest of a scene. Based on detecting the second device within the region of interest of the scene, the first device can transmit a message mute request to the second device, the message mute request requesting the second device to modify transmission of messages (e.g., by stopping transmission of the messages or reducing a frequency of transmission of the messages). In some cases, the first device can transmit a message resume request to the second device requesting the second device to resume transmission of the messages or increase the frequency of transmission of the messages.