Vehicle Network Primary Node for Dead Corner Communication
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Solution Overview
Problem
Existing vehicle-to-vehicle communication systems face challenges in providing real-time warnings due to network congestion and obstruction by terrain features, particularly at crossroads and areas with traffic jams, leading to incomplete anti-collision warnings.
Innovation Solution
A driving safety auxiliary network administration system that designates a primary node to collect and prioritize driving messages from secondary nodes, applying an anti-collision algorithm to establish threat correlation groups and ensure reliable communication by filtering packets based on urgency, using a primary node selection procedure to maintain communication reliability even in obstructed areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If each vehicle continuously broadcasts driving messages to all neighboring vehicles, then real-time information exchange is achieved, but network congestion occurs and message transmission reliability deteriorates
Solution Approach 1:
The system segments the network into one primary node and multiple secondary nodes. The primary node is responsible for broadcasting messages to all secondary nodes, while secondary nodes only receive and forward messages. This segmentation eliminates the chaotic many-to-many communication pattern, reduces network congestion, and improves message transmission reliability by establishing a clear hierarchical structure.
Solution Approach 2:
The primary node acts as an intermediary between vehicles, collecting driving messages from secondary nodes and redistributing them to the entire network. This intermediary role consolidates the broadcasting function, preventing message collisions and ensuring reliable delivery to all nodes without requiring each vehicle to broadcast independently.
2Reliability
If message packets are resent after collision failure, then message delivery is attempted, but real-time exchange is lost due to waiting time
Solution Approach 1:
The system performs preliminary actions by establishing a primary node before message broadcasting begins. The primary node is pre-configured to handle message distribution, and the network structure is pre-organized to prevent collisions. This preliminary setup eliminates the need for retransmission delays, as messages are distributed efficiently from the start without collision failures.
3Reliability
If a primary node is designated to collect and prioritize messages, then packet collisions are reduced, but network structure complexity increases
Solution Approach 1:
The primary node performs multiple functions: collecting messages from secondary nodes, prioritizing messages based on importance, broadcasting to all secondary nodes, and managing threat correlation groups. This multi-functionality consolidates complex operations into a single node, improving communication reliability while the standardized protocol keeps the overall network structure manageable.
Solution Approach 2:
The system changes the operational parameters of message handling by introducing priority levels and threat correlation groupings. Messages are assigned different priorities based on their importance, and nodes are organized into threat correlation groups based on their spatial relationships. These parameter changes enable efficient message management without requiring complex hardware modifications.
4Loss of time
If threat correlation groups are established with different priorities, then critical information is delivered promptly, but message processing complexity increases
Solution Approach 1:
The system applies local quality by assigning different priorities to different message types and organizing nodes into specific threat correlation groups based on their local spatial relationships. Critical safety messages receive high priority and are delivered immediately, while less critical messages are handled with lower priority. This localized differentiation of message importance enables prompt delivery of critical information while keeping the processing rules relatively simple and standardized.
Data Source
AI summary
This specification discloses a driving safety auxiliary network administration system and the method thereof. Vehicles in motion communicate with each other about their geographical locations and current moving states within a communication range. At least one of the vehicles in the communication range becomes the router of several other vehicles that are at dead corners of wireless communications. The router is responsible for transferring vehicle state signals of those vehicles out of direct communications between them. Therefore, all the vehicles in the communication range are not blocked by terrains, buildings or other vehicles. All of them are taken into account to assess and find possible dangerous vehicles. This technique can effectively solve the problem of dead corners in driving safety auxiliary network communications. Highly important packets can be immediately and reliably transmitted to the corresponding vehicles, providing efficient warnings.