V2X Intention Data Feedback Mechanism for Synchronized Driving
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current 4G LTE-based V2X communication systems lack explicit end-to-end feedback mechanisms, which limits their ability to meet the stringent requirements for emerging synchronized coordinated driving applications that involve the transmission of status-data, sensor data, vehicle intention data, and coordination information, necessitating higher data rates, increased reliability, and reduced latency.
Innovation Solution
The method involves identifying proximate V2X-UEs, transmitting control channel information to allocate a data pool for V2X intention data, and receiving confirmation on a reserved feedback channel, utilizing a new radio V2X control information (NR-VCI) format with dynamic instant feedback capabilities to enable ultra-reliable and ultra-low latency communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If 4G LTE-based V2X communication is used, then coverage and basic connectivity are provided, but explicit end-to-end feedback mechanisms are lacking and latency is high
Solution Approach 1:
The patent implements explicit end-to-end feedback mechanisms where receiving V2X-UEs send acknowledgment messages back to transmitting V2X-UEs to confirm successful reception of status-data, sensor data, intention-data, and coordination information. This feedback loop enables reliable communication by allowing transmitters to verify data delivery and request retransmissions if necessary, directly addressing the lack of feedback in 4G LTE-based systems.
Solution Approach 2:
The patent establishes pre-configured resource pools and feedback channels in advance for V2X communication. Resource allocations, including time-frequency resources for data transmission and corresponding feedback channels, are predetermined and signaled to UEs before actual communication occurs. This preliminary setup reduces latency by eliminating the need for dynamic resource allocation during critical V2X exchanges.
2Productivity
If data transmission rate is increased for synchronized-cooperative-driving applications, then communication capability is improved, but system complexity increases
Solution Approach 1:
The patent segments V2X data into different types (status-data, sensor data, intention-data, coordination information) and allocates specific resource pools for each type. This segmentation allows the system to optimize transmission parameters for each data category without increasing overall system complexity, as each segment can be handled with appropriate complexity level independently.
Solution Approach 2:
The patent creates a universal resource pool structure that can handle multiple V2X application types (awareness-driving, sensing-driving, cooperative-driving, synchronized-cooperative-driving) through a common framework. The same basic resource allocation mechanism serves different data types and application scenarios, avoiding the need for separate complex systems for each application.
3Reliability
If feedback mechanism is implemented for confirmation of receipt, then communication reliability is improved, but channel resource requirements increase
Solution Approach 1:
The patent combines feedback transmissions from multiple V2X-UEs by allowing them to share common feedback resources through techniques such as random access feedback or scheduled group feedback. Multiple acknowledgment messages are merged into shared time-frequency resources, reducing the total channel resource consumption compared to dedicated feedback channels for each transmitter-receiver pair.
Solution Approach 2:
The patent implements selective feedback where not all V2X-UEs send feedback in all situations. Feedback requirements are determined locally based on the specific communication context, data importance, and receiver capability. This local quality approach ensures feedback is provided only when necessary, optimizing the balance between reliability and resource consumption.
Data Source
AI summary
A method for providing vehicular communication in an advanced wireless communication system, which includes instant feedback to enable synchronized cooperative driving, is provided. The method comprises: identifying, at a first V2X-UE, one or more second V2X-UEs in proximity to the first V2X-UE; transmitting, from the first V2X-UE- and to the one or more second V2X-UEs, control channel information identifying a portion of a data pool allocated for V2X intention data; transmitting, from the first V2X-UE and to the one or more second V2X-UEs and on the identified portion of the data pool, V2X intention data; and receiving, at a first V2X-UE- and on a reserved feedback channel, confirmation of receipt of the V2X intention data from a V2X-UE of the one or more second V2X-UEs.