SCION-IP Gateway Path Selection for Network Interoperability
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Solution Overview
Problem
Existing IP-capable devices cannot directly communicate over SCION networks due to protocol incompatibilities, limiting their ability to leverage SCION's path-control and resilience features, and there is a need for an efficient method to set up SCION-IP gateways for optimal tunneling performance without complex tuning or user interaction.
Innovation Solution
A computer-implemented method and device for transmitting data between nodes in a source-selected path routing network, involving path parameter determination, attribute analysis from data packets, and selecting preferred paths based on decision rules, with gateway devices acting as entry and exit points between packet switched networks and SCION networks, ensuring efficient routing and resilience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If SCION-IP gateways are deployed to enable interoperability between SCION and IP networks, then protocol compatibility and network interoperability are improved, but device complexity and configuration overhead increase
Solution Approach 1:
The patent introduces SCION-IP gateways as intermediary devices that translate between SCION and IP protocols, enabling interoperability without requiring changes to existing IP infrastructure or SCION networks. The gateway acts as a mediator that handles protocol conversion, path selection, and packet encapsulation/decapsulation automatically
Solution Approach 2:
The gateway automatically performs path selection by evaluating path parameters (latency, bandwidth, cost) and selecting optimal paths without requiring manual configuration or user interaction. The system self-adjusts routing decisions based on real-time network conditions and predefined policies
2Productivity
If manual tuning and configuration are used to optimize gateway performance, then routing efficiency can be improved, but ease of operation and deployment time deteriorate
Solution Approach 1:
Routing policies and path selection criteria are pre-configured in the gateway before deployment. The system prepares path evaluation rules, cost metrics, and performance thresholds in advance, allowing the gateway to immediately begin efficient routing operations without requiring post-deployment tuning
Solution Approach 2:
The gateway continuously monitors path performance metrics (latency, bandwidth utilization, packet loss) and uses this feedback to dynamically adjust routing decisions. The system learns from actual network conditions and automatically optimizes path selection without manual intervention
3Productivity
If multiple path parameters are evaluated for path selection, then routing optimization and network performance are improved, but computational overhead and processing time increase
Solution Approach 1:
The path selection process is divided into separate evaluation stages: first filtering paths based on hard constraints (cost, policy rules), then evaluating remaining paths based on performance metrics (latency, bandwidth). This segmentation allows efficient processing by eliminating poor paths early without exhaustive evaluation of all parameters for all paths
Solution Approach 2:
The gateway dynamically adjusts the weight and importance of different path parameters based on traffic type and network conditions. For example, real-time traffic may prioritize latency while bulk transfers prioritize bandwidth, allowing the system to optimize path selection quality without always evaluating all parameters at full depth
Data Source
AI summary
The invention is directed to a computer-implemented system and method for transmitting data from a first node to a second node of a source-selected path routing network. In said system and method according to the present invention, a first data packet is received at the first node, wherein said data packet was sent from a source node according to next-hop routing. Subsequently, at least part of the data contained in the data packet is transmitted from the first node to the second node according to source-selected path routing. Finally, the data received at the second node is transmitted to a destination node according to next-hop routing. Said system and method is further characterized by the steps of determining, for at least a subset of a plurality of available paths between the first node and the second node, a plurality of path parameters; determining a plurality of attributes related to the first data packet; selecting a preferred path from the plurality of available paths based on a decision rule, said decision rule specifying, for at least one attribute, a preferred range of path parameters; and remotely determining the second node based on destination information related to the destination node, wherein said destination information is extracted from the data packet.