UE Location Prediction Thresholds for Event-Triggered V2X Messaging
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Solution Overview
Problem
Current wireless communication systems, particularly in V2X and ITS standards, face inefficiencies in data traffic management due to periodic message transmission, leading to increased network load and potential service interruptions, especially when UE location predictions are not accurately managed.
Innovation Solution
Implement a method where message generation is triggered based on a predicted state of the UE, with a configurable allowable position error threshold, allowing transmission only when the difference between predicted and actual location exceeds this threshold, thereby optimizing data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If periodic message transmission is used in V2X communication, then message delivery is ensured, but network load increases and service interruptions may occur
Solution Approach 1:
The patent applies periodic action by using event-triggered message transmission instead of strict periodic transmission. Messages are transmitted periodically only when specific events occur (such as when prediction error exceeds threshold), combining the benefits of periodic scheduling with event-driven optimization to reduce unnecessary transmissions while ensuring reliable delivery when needed
Solution Approach 2:
The patent changes the transmission parameter from fixed periodic intervals to dynamic event-based triggers. By monitoring prediction error parameters and comparing them against thresholds, the system dynamically adjusts transmission timing, transmitting only when the difference between predicted and actual location exceeds the allowable error threshold, thereby reducing data traffic while maintaining reliability
2Reliability
If message transmission frequency is increased to improve service reliability, then network load and potential service interruptions increase
Solution Approach 1:
The patent implements feedback by continuously monitoring the prediction error between predicted UE location and actual location. This feedback mechanism triggers message transmission only when the error exceeds a predefined threshold, ensuring service reliability by transmitting updates when necessary while avoiding unnecessary transmissions that would degrade network performance
Solution Approach 2:
The patent applies dynamics by making the message transmission frequency adaptive rather than static. The transmission rate dynamically adjusts based on the predicted position error, increasing transmission frequency when prediction accuracy degrades and reducing frequency when predictions remain accurate, thereby optimizing the balance between service reliability and network performance
Data Source
AI summary
Provided are a method by which a first device performs wireless communication, and an apparatus supporting same. The method may comprise the steps of: transmitting, to a second device, a first message including first state information of the first device; generating a second message including second state information of the first device, on the basis of a difference between a predicted state of the first device, determined on the basis of the first state information, and a current state of the first device being greater than or equal to a threshold value; and transmitting the second message to the second device. For example, the threshold may be set on the basis of at least one of (i) a service of the first device or (ii) a state of the first device.