VRU–RSU PC5 Communication for Prioritized Real-Time Data
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently processing and transmitting real-time data for vulnerable road users (VRUs) due to delays and inefficiencies in data processing, particularly when communicating with road side units (RSUs) and base stations, which can compromise safety in dynamic environments.
Innovation Solution
A method and apparatus for VRUs to prioritize processing and transmitting real-time data related to pedestrians and vehicles by establishing a direct communication path with RSUs through PC5 connections, utilizing multi-access edge computing (MEC) to minimize delays and enhance near-real-time data processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If VRUs communicate with base stations through traditional network paths, then data can be transmitted reliably, but transmission delays increase and real-time processing efficiency deteriorates
Solution Approach 1:
The patent introduces Road Side Units (RSUs) as intermediary devices between VRUs and the network. RSUs establish direct PC5 connections with VRUs for data transmission, acting as local mediators that process and forward data without requiring communication to route through distant base stations. This intermediary approach maintains transmission reliability while significantly reducing latency by keeping data processing local to the road environment.
Solution Approach 2:
The patent segments the traditional centralized communication architecture into distributed components: VRUs, RSUs, and base stations operate as separate functional units. RSUs handle local real-time data processing for VRUs, while base stations manage broader network coordination. This segmentation allows critical safety data to be processed locally at RSUs without waiting for base station intervention, reducing transmission delays while maintaining overall system reliability.
2Ease of operation
If VRUs process all received data uniformly, then data processing is simple, but critical real-time safety data cannot be prioritized leading to safety risks
Solution Approach 1:
The patent implements differential data processing where different types of data receive different processing priorities based on their safety criticality. Dynamic real-time data (such as immediate collision risks) is prioritized and processed with higher urgency compared to static data (such as map information). This local quality differentiation ensures that critical safety information receives immediate attention while maintaining overall processing efficiency, directly addressing the reliability concern without significantly complicating the processing architecture.
Solution Approach 2:
The patent introduces dynamic priority adjustment mechanisms where data processing priorities are not fixed but adapt based on real-time conditions. The system dynamically identifies and prioritizes time-critical safety data over less urgent information. This dynamic approach allows the system to maintain simple processing routines while ensuring that when critical safety data arrives, it automatically receives the necessary processing priority, thereby improving safety protection reliability without requiring complex predetermined processing rules.
Data Source
AI summary
According to an embodiment, a method for vulnerable road users (VRU) transmitting and receiving signals to and from a road side unit (RSU), in a wireless communication system, comprises: receiving, by the VRU, data from one or more of the RSU or a base station; and transmitting, by the VRU, data to the RSU or the base station, wherein the VRU first processes first data from among the first data transmitted by the RSU and second data transmitted by the base station, and the first data is dynamic data corresponding to real-time data related to at least one of a pedestrian and a vehicle.