Vehicle Router Dynamic Path Selection for Gateway Bottlenecks
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Solution Overview
Problem
Current wireless communication systems for moving vehicles, such as trains, face challenges with poor performance due to bottlenecks in the gateway infrastructure, especially when handling large data volumes and high-speed movements, leading to strain on the network and inefficient use of bandwidth.
Innovation Solution
A wireless communication method and system that uses a router to selectively route data streams through either aggregated or non-aggregated communication links, based on the type of data stream and the load on the aggregation gateway, allowing for dynamic adjustment and fallback mechanisms to optimize bandwidth usage and reduce bottlenecks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all data traffic is routed through the aggregation gateway, then communication reliability is improved, but gateway bottleneck and network strain increase
Solution Approach 1:
The patent segments data traffic into two categories: long data streams (e.g., VoIP) that benefit from aggregation and short data streams (e.g., HTTP requests) that do not. By separating these traffic types and routing them through different paths (aggregated vs. non-aggregated), the system maintains reliability for critical applications while preventing gateway bottlenecks for bulk traffic.
Solution Approach 2:
The patent applies different quality treatments to different parts of the traffic flow. Long data streams receive the high-quality aggregated communication path with error correction and retransmission, while short data streams use the simpler non-aggregated path. This local differentiation optimizes overall system performance without unnecessary overhead.
2Reliability
If aggregation is used for all data streams, then error correction and retransmission are improved, but bandwidth efficiency and gateway load worsen
Solution Approach 1:
The patent applies aggregation (error correction and retransmission) partially, only to long data streams where it provides meaningful benefit. Short data streams are excluded from aggregation overhead, achieving excessive action for critical traffic while avoiding waste for transient traffic that would complete before retransmission delays.
3Productivity
If multiple gateways are deployed to handle increased traffic, then capacity is improved, but infrastructure cost and complexity increase
Solution Approach 1:
The patent introduces dynamic traffic routing that adapts to current gateway load conditions. When the aggregation gateway is available and not overloaded, traffic is routed through it for reliability. When the gateway is unreachable or overloaded, traffic dynamically switches to direct non-aggregated paths. This dynamic adaptation allows the system to scale capacity without proportionally increasing gateway infrastructure.
4Speed
If the train moves at high speed through areas with bad radio coverage, then mobility is improved, but communication performance deteriorates
Solution Approach 1:
The patent prepares for poor radio coverage conditions by implementing multiple communication paths in advance. When radio conditions deteriorate due to high speed or terrain, the system can switch from aggregated communication (which requires stable connections for retransmission) to non-aggregated direct communication, cushioning against performance degradation before it occurs.
Data Source
AI summary
A method for wireless communication between a moving vehicle and remote servers through at least one external mobile network. A router in the moving vehicle is configured for receiving and transmitting wireless data to and from both an aggregation server, using aggregated communication over at least two separate links, and at least one other stationary communication server, using non-aggregated communication over a single link. The router is further accessible by a plurality of client devices onboard the moving vehicle. At least one selection rule is provided in the router for selecting whether to use aggregated or non-aggregated communication, and a determination is made, upon a request from a client device to communicate with one of said remote servers, whether one of the at least one rules applies; and if so selecting to use aggregated communication via the at least one other communication server for communication based on the determination.