Distributed Vehicle-to-X Communication Flow Transmission
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Solution Overview
Problem
Existing vehicle-to-X communication systems face challenges in ensuring data integrity and reliability due to the need for complex encryption, powerful hardware, and reliance on ambient sensors, which can be costly and unreliable, especially in situations with limited sensing opportunities.
Innovation Solution
A method for distributed transmission of communication flows, where the communication flow is divided into multiple elements and transmitted over different paths, allowing for easy protection against information alterations by assembling the elements at the receiving unit to check for consistency, using security data portions like checksums and data integrity certificates, and redundant transmission for increased reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex encryption and signing are used to ensure data integrity, then reliability is improved, but device complexity and cost increase
Solution Approach 1:
The communication flow is divided into multiple elements that are transmitted separately over different communication paths. This segmentation allows the system to avoid complex encryption of the entire message while maintaining integrity through distributed transmission and reassembly at the receiver.
2Reliability
If ambient sensors are used to validate vehicle-to-X information, then reliability is improved, but the system becomes unreliable in situations with limited sensing opportunities
Solution Approach 1:
The patent introduces communication flow elements and reassembly logic as an intermediary mechanism between transmission and validation. Instead of relying directly on ambient sensors that may be unavailable, the system uses distributed communication paths and checksum validation that work independently of sensing conditions.
3Measurement precision
If directionally selective antenna is used to determine transmitter position, then measurement precision is improved, but reliability decreases due to electromagnetic field influences on beam path
Solution Approach 1:
Instead of relying on single antenna beam path measurements that are susceptible to electromagnetic interference, the patent transmits copies of communication flow elements over multiple different communication paths. This redundancy allows validation without depending on precise directional measurements that are unreliable in complex electromagnetic environments.
4Reliability
If multiple ambient sensors are deployed to capture information content, then reliability is improved, but device complexity and cost increase
Solution Approach 1:
The patent transitions from spatial redundancy (multiple sensors capturing the same information from different positions) to communication path redundancy (single information transmitted through multiple channels). This dimensional shift from physical sensor deployment to communication channel diversification reduces hardware complexity while maintaining reliability.
Data Source
AI summary
A method and system for the distributed transmission of the communication flow, in which the communication flow takes place at least unidirectionally from a first to a second communication unit and wherein the first and second communication units are capable of transmitting the communication flow by means of at least two different communication paths, the communication flow comprises at least one vehicle-to-X message. The communication flow is divided into at least two communication flow elements by the first communication unit prior to sending, wherein the at least two communication flow elements are transmitted from the first to the second communication unit in a manner distributed over the at least two different communication paths, and wherein the at least two communication flow elements are assembled again by the second communication unit following reception.