Sidelink Threat Notification Aggregation for V2X Battery Efficiency
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Solution Overview
Problem
In wireless communication systems, there is a mismatch in predicting collision risks due to differences in computational and processing capabilities among devices, and existing methods consume excessive battery power and generate unnecessary data traffic when transmitting threat notification messages for collision risks in V2X communication.
Innovation Solution
A method for transmitting threat notification messages using GeoCasting, which includes receiving safety messages from other devices, evaluating collision risks, and generating event information to transmit a threat notification message with identification information and dangerous area details, minimizing data traffic by integrating messages for multiple devices and optimizing battery consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each device transmits individual threat notification messages for collision risks, then all devices receive complete risk information, but data traffic increases and battery consumption rises
Solution Approach 1:
The patent combines multiple individual threat notification messages into a single aggregated message that contains risk information for multiple devices. Instead of each device transmitting separate TNM messages, the system merges these into one consolidated message that covers collision risks for multiple target devices, thereby reducing data traffic and battery consumption while maintaining complete risk information delivery.
2Reliability
If each device transmits individual threat notification messages for collision risks, then all devices receive complete risk information, but data traffic increases
Solution Approach 1:
The patent combines multiple individual threat notification messages into a single aggregated message that contains risk information for multiple devices. Instead of each device transmitting separate TNM messages, the system merges these into one consolidated message that covers collision risks for multiple target devices, thereby reducing data traffic and battery consumption while maintaining complete risk information delivery.
3Ease of operation
If devices with different computational capabilities perform collision risk evaluation independently, then each device makes autonomous safety decisions, but prediction accuracy mismatches occur
Solution Approach 1:
The patent introduces a base station as an intermediary that performs centralized collision risk evaluation. The base station receives safety messages from multiple devices, performs comprehensive risk assessment using its superior computational capabilities, and generates aggregated threat notification messages. This mediator approach ensures accurate and consistent risk predictions across all devices, resolving the mismatch caused by varying local computational capabilities while preserving autonomous operation through the distributed message transmission mechanism.
Data Source
AI summary
Disclosed are a method by which a first device transmits a message in a wireless communication system supporting sidelink, and a device therefor according to various embodiments. The method comprises: a step in which the first device receives a first safety message from a second device; a step of evaluating a collision risk on the basis of the first safety message and generating first event information on the basis of the collision risk evaluation; and a step of transmitting a threat notification message (TNM) including identification information of the second device and the first event information, wherein when the first safety message is a personal safety message (PSM), the threat notification message further includes information on a first risk region determined in response to the first event information.