Railway Communication Path Switching for Redundant Network Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing railway communication systems using redundant communication paths without priority control or switching lead to increased processing loads and communication data amounts, especially when using public networks.
Innovation Solution
A communication control device that monitors and manages multiple communication paths, determining which paths to use for data transmission based on availability, assigning them to used, standby, or unavailable states, thereby reducing processing load and optimizing path usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple communication paths are simultaneously used without priority control or switching, then communication reliability is improved, but processing load and communication data amount increase
Solution Approach 1:
The system dynamically switches between active and standby communication paths based on real-time monitoring of path availability and quality. The communication control device changes the state of communication paths from static to dynamic, activating standby paths only when needed, thereby reducing processing load while maintaining communication reliability.
Solution Approach 2:
The system pre-configures multiple communication paths including primary and standby paths before actual communication occurs. The communication control device prepares path switching capabilities in advance, so when the primary path fails, the switch to standby path can occur immediately without increasing processing load during normal operation.
2Reliability
If multiple communication paths are simultaneously used without priority control or switching, then communication reliability is improved, but communication data amount increases
Solution Approach 1:
The system dynamically controls the number of active communication paths based on actual communication needs and path quality. Instead of continuously transmitting data over all available paths, the system activates only the necessary number of paths, reducing redundant communication data while ensuring reliability through available backup paths.
Solution Approach 2:
The system applies different quality levels to different communication paths based on their specific characteristics and current status. Primary paths are used for normal communication, while standby paths are reserved and only activated when needed, optimizing communication data usage by matching path quality to actual requirements.
3Reliability
If privately operated communication equipment is used, then communication reliability is improved, but equipment cost increases
Solution Approach 1:
The communication control device is designed to work with multiple types of communication paths including both privately operated dedicated paths and publicly shared paths. This multi-functionality allows the system to use cost-effective public network paths while maintaining reliability through the ability to switch between different path types based on availability and requirements.
Solution Approach 2:
The communication control device acts as an intermediary that manages and switches between different communication paths. It enables the system to utilize public network infrastructure by providing intelligent path selection and switching, thereby reducing equipment costs while maintaining communication reliability through controlled access and path management.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
In a railway communication system, to provide communication control to ensure reliability of communication by making communication paths redundant and determine an optimal number of paths while determining an optimal communication path, a communication control device for the railway communication system that performs data transmission between a plurality of devices via a plurality of communication paths including at least a wireless communication path includes: a communication path monitoring unit that monitors whether each of the plurality of communication paths is usable; a communication path determining unit that determines a communication path to be used for the data transmission from among the plurality of communication paths; and a path management unit that manages each of the plurality of communication paths as any of a communication path in a used state, a communication path in a standby state, and a communication path in an unavailable state. The communication path determining unit determines a communication path to be used for the data transmission based on a result of the monitoring by the communication path monitoring unit, assigns each of the plurality of communication paths to any of a used state, a standby state, and an unavailable state, and registers the plurality of communication paths to the path management unit.