Selective Retransmission for V2X Warning Messages
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current vehicle-to-everything (V2X) communication systems face challenges in effectively transmitting warning messages to all relevant vehicles, especially those outside the transmission range of the originating vehicle, leading to potential safety hazards due to limited range and latency issues.
Innovation Solution
A method where user equipment (UE) receives a warning message with priority and event indications, and selectively retransmits it based on priority thresholds, hop quantity thresholds, and timing offsets to ensure wider coverage and reduce network load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If warning messages are transmitted only by the originating vehicle, then network load is reduced, but coverage range is limited and vehicles outside transmission range cannot receive warnings
Solution Approach 1:
The warning message transmission function is segmented between the originating vehicle and intermediate receiving vehicles. The originating vehicle transmits the initial warning message, and selected receiving vehicles segment the retransmission task based on priority thresholds and hop quantity thresholds, enabling distributed coverage extension without overloading the network.
Solution Approach 2:
Receiving vehicles act as intermediaries to relay warning messages further into the network. These intermediate nodes forward warnings to vehicles outside the original transmission range, effectively extending coverage while distributing network load across multiple participants rather than requiring a centralized transmission approach.
2Area of stationary object
If all warning messages are retransmitted by receiving vehicles, then coverage is maximized, but network load increases excessively
Solution Approach 1:
Different receiving vehicles apply different retransmission behaviors based on local conditions. Vehicles evaluate incoming warning messages against priority thresholds and hop quantity thresholds to determine whether to retransmit, creating localized quality control that prevents unnecessary network load while maintaining coverage for critical warnings.
Solution Approach 2:
The system changes parameters such as priority thresholds and hop quantity thresholds to control retransmission behavior. By adjusting these parameters, the network can dynamically balance between coverage range and network load, allowing critical warnings to propagate widely while filtering out less important messages.
3Speed
If warning messages are transmitted without priority differentiation, then all messages are treated equally, but critical urgent messages cannot be prioritized for faster propagation
Solution Approach 1:
Warning messages include priority indicators and hop quantity indicators in advance before transmission. Receiving vehicles evaluate these pre-included parameters to make rapid retransmission decisions, enabling critical messages to be prioritized for faster propagation without requiring complex real-time analysis during message handling.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a warning message comprising a first indication of a priority of the warning message and a second indication that identifies an event. The UE may transmit a repetition of the warning message based at least in part on the first indication. Numerous other aspects are described.