Selective Traffic Replication Across Diverse Network Interfaces
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Solution Overview
Problem
Conventional network communication techniques fail to address disconnection issues in network interfaces, leading to communication disruptions in time-sensitive or safety-critical data transmission, and existing redundancy solutions are costly and do not provide diverse redundancy.
Innovation Solution
Implementing selective and diverse traffic replication by using different network interfaces associated with distinct systems to transmit replicated traffic flows based on priority metrics, ensuring reliable communication through a merged traffic flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional network communication techniques are used, then system simplicity is maintained, but network reliability deteriorates due to disconnection issues in time-sensitive or safety-critical data transmission
Solution Approach 1:
The traffic flow is segmented into multiple priority levels, with different frames being replicated selectively based on their priority metrics. High-priority safety-critical frames are replicated across multiple diverse network interfaces, while lower-priority frames are transmitted through the primary interface only, thereby improving reliability for critical data without unnecessarily complicating the entire system.
Solution Approach 2:
Different quality levels of redundancy are applied to different portions of the traffic flow based on local priority requirements. Safety-critical frames receive diverse redundancy through multiple network interfaces, while non-critical frames use standard single-interface transmission, optimizing the balance between reliability and complexity for each specific data type.
2Reliability
If existing redundancy solutions are implemented, then communication reliability is improved, but costs increase and diverse redundancy is not provided
Solution Approach 1:
The system changes the parameter of redundancy diversity by utilizing fundamentally different network interface types (e.g., Ethernet and CAN bus) rather than simply adding more of the same interface type. This provides diverse redundancy that protects against systematic failures while managing costs through selective replication based on frame priority.
Solution Approach 2:
Instead of implementing expensive full redundancy systems, the patent selectively copies only the critical portions of traffic flows (high-priority frames) through alternative diverse network paths. This selective copying approach provides necessary redundancy for safety-critical data while avoiding the prohibitive costs of replicating entire traffic flows or using non-diverse redundant interfaces.
3Loss of time
If selective traffic replication is implemented, then latency is reduced for safety-critical data, but device complexity increases
Solution Approach 1:
The system performs preliminary classification of traffic frames into priority levels before transmission. By identifying which frames are safety-critical in advance and assigning them to multiple diverse network interfaces proactively, the system ensures that critical data has redundant paths ready before disconnections occur, reducing latency without requiring complex real-time decision-making during transmission.
Data Source
AI summary
A device may provide a traffic flow via a first network interface, the traffic flow including a plurality of frames. The device may identify a plurality of priority metrics associated with the traffic flow, each priority metric of the plurality of priority metrics corresponding to a respective frame of the plurality of frames. The device may generate a replicated traffic flow based on the plurality of priority metrics, the replicated traffic flow including a replicate of a set of frames from the plurality of frames. The device may provide the replicated traffic flow via a second network interface.