Vehicle Communication Control for Safety-Critical Cellular Failover
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Solution Overview
Problem
Existing vehicle communication systems incur high costs and availability issues when a cellular communication network fails, particularly affecting safety-critical applications.
Innovation Solution
An information processing device with dual connectivity to two cellular networks, switching communication paths only for safety-critical applications during network failures, using a lower-cost backup network for these applications while maintaining connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If communication is switched to a backup cellular network during failure of the first network, then availability of vehicle mounted applications is improved, but communication cost increases
Solution Approach 1:
The patent segments vehicle mounted applications into multiple categories (first category with high availability requirement, second category with lower availability requirement). This segmentation allows differential network switching strategies: only applications in the first category switch to the backup network during failure, while applications in the second category remain on the failed network or use alternative solutions, thereby reducing overall communication cost while maintaining availability for critical applications.
2Reliability
If all vehicle mounted applications switch to backup network during failure, then availability is improved, but device complexity increases
Solution Approach 1:
By segmenting applications into categories based on availability requirements, the system simplifies communication management during network failure. The control unit only needs to identify and switch applications in the first category to the backup network, rather than managing all applications uniformly. This categorical approach reduces the complexity of network switching decisions and control logic.
3Reliability
If communication module maintains connectivity to both cellular networks simultaneously, then availability is improved, but use of energy increases
Solution Approach 1:
The patent implements dynamic network switching based on real-time network status and application requirements. The communication module maintains connectivity to the primary cellular network under normal conditions and only activates the backup network dynamically when failure is detected for applications in the first category. This dynamic approach reduces energy consumption compared to maintaining simultaneous connectivity to both networks, while still ensuring availability when needed.
Data Source
AI summary
An information processing device comprising: a communication module connectable to both a first cellular communication network and a second cellular communication network; and a control unit. when a failure occurs in the first cellular communication network, the control unit switches a communication network to be used to the second cellular communication network for a vehicle mounted application classified into a prescribed category from among a plurality of vehicle mounted applications that use the first cellular communication network.