Message Splitting for Multi-RAT V2X Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In V2X applications, existing communication technologies face challenges in reliably and efficiently transmitting V2X messages due to varying radio access technologies (RATs) and message content, leading to potential degradation of communication, especially when priority and non-priority message sections are transmitted using a single RAT.
Innovation Solution
The implementation of message splitting for multi-RAT transmission, where different sections of a V2X message are transmitted using selected priority and non-priority RATs based on message content and conditions, optimizing communication efficiency and reliability by leveraging the capabilities of multiple RATs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single RAT is used to transmit all V2X messages, then device complexity is reduced, but communication reliability and efficiency degrade when different message priorities require different transmission characteristics
Solution Approach 1:
The V2X message is segmented into priority and non-priority sections, which are then transmitted using different RATs. This segmentation allows critical message parts to use reliable low-latency RATs while non-critical parts use high-capacity RATs, resolving the contradiction between reliability and complexity by applying different transmission strategies to different message portions.
Solution Approach 2:
Different quality characteristics are assigned to different sections of the V2X message based on their priority. Priority sections receive high-reliability transmission treatment through selected RATs, while non-priority sections use standard transmission. This local quality differentiation resolves the contradiction by optimizing reliability where needed without unnecessarily increasing overall system complexity.
2Reliability
If priority message sections are transmitted using high-reliability low-latency RATs, then message delivery reliability improves, but system complexity increases due to multi-RAT management
Solution Approach 1:
The message is divided into priority and non-priority sections that can be transmitted through different RATs simultaneously or sequentially. This segmentation allows the system to manage multiple RATs only when and where needed (for priority sections), reducing the overall management complexity compared to using multiple RATs for all message types.
Solution Approach 2:
The patent introduces an intermediary mechanism (the message splitting and selection logic) that manages the complexity of multi-RAT transmission by automatically determining which RAT to use for each message section based on priority. This intermediary layer shields the application from direct multi-RAT management complexity while ensuring reliable delivery of priority sections.
3Productivity
If message splitting is implemented for multi-RAT transmission, then communication efficiency improves by matching RAT capabilities to message priorities, but processing complexity increases
Solution Approach 1:
The V2X message is segmented into priority and non-priority sections, enabling differentiated transmission through appropriate RATs. This segmentation improves communication efficiency by matching transmission characteristics to message importance, while the segmentation logic itself is designed to be relatively simple (based on message type or flag inspection), thus limiting the increase in processing complexity.
Solution Approach 2:
The patent changes the parameter of message transmission by splitting messages and selecting different RATs based on priority parameters. This parameter-based approach improves efficiency by optimizing transmission for each message section, while the parameter changes are based on simple criteria (message priority levels) that do not require complex processing.
4Reliability
If all V2X messages are transmitted with high priority treatment, then delivery reliability improves, but transmission latency increases for non-critical message sections
Solution Approach 1:
The message is segmented into priority and non-priority sections transmitted through different RATs. Priority sections receive expedited transmission with low latency treatment, while non-priority sections use standard transmission processes. This segmentation resolves the contradiction by applying high-reliability fast transmission only where necessary, reducing overall transmission latency compared to treating all sections as high priority.
Solution Approach 2:
Different quality-of-service characteristics are applied locally to different message sections based on their priority. Critical sections receive high-reliability low-latency treatment, while non-critical sections accept standard transmission characteristics. This local quality differentiation resolves the contradiction between reliability and latency by optimizing each section's transmission according to its actual requirements.
Data Source
AI summary
A method includes identifying, within a message, first data comprising a priority section and second data comprising a non-priority section. A priority message is generated that includes the first data. The priority message is transmitted using a priority radio access technology (RAT). A non-priority message is generated that includes the second data. The non-priority message is transmitted using a non-priority RAT.