In-Vehicle System Emergency Registration via Priority Setup
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Solution Overview
Problem
Conventional wireless network registration processes for eCall-only mode In-Vehicle Systems (IVS) in emergency situations result in delays due to the same priority being given to emergency and non-emergency calls, which is critical and needs to be expedited for immediate emergency services activation.
Innovation Solution
Implementing an 'emergency setup' message for IVS to register on the mobile network with higher priority, allowing immediate registration and call initiation, even when roaming, by recognizing the message from both home and visited networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional registration message is used for eCall-only mode IVS, then the IVS can register on the mobile network, but the registration process experiences delay due to same priority as non-emergency calls
Solution Approach 1:
The patent changes the priority parameter of the registration message from conventional (same as non-emergency) to high priority by using an emergency setup message. This parameter change enables the IVS to bypass normal registration queues and receive expedited processing from the mobile network, directly resolving the contradiction between maintaining standard registration procedures and achieving faster emergency response.
2Reliability
If eCall-only mode IVS waits for network registration before emergency call, then proper network handoff is ensured, but critical time is lost in emergency situations
Solution Approach 1:
The patent applies preliminary action by having the IVS pre-configure emergency setup messages with high priority indicators before actual emergency occurrence. When an emergency is triggered, the pre-configured message format allows immediate transmission without waiting for conventional registration completion, ensuring both network reliability through proper handoff procedures and reduced response time through expedited processing.
3Productivity
If conventional registration procedures are followed, then standard network protocols are maintained, but emergency call initiation is delayed
Solution Approach 1:
The patent applies universality by designing the emergency setup message to serve multiple functions: it acts as both a registration request and a high-priority indicator simultaneously. This multi-functional message format allows the IVS to maintain compatibility with standard network protocols while expeditedly initiating emergency calls, avoiding the need for separate message types and reducing overall system complexity.
Data Source
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AI summary
An eCall is an emergency call that may (i) be initiated automatically by a wireless terminal due to a trigger event (e.g., a vehicle involved in an accident) or manually by a user and (ii) include additional data sent automatically by the terminal to a recipient entity, e.g., a Public Safety Answering Point (PSAP). Emergency setup signaling (e.g., an Emergency SETUP message) is used to give high priority to registering an eCall-only mode In-Vehicle System (IVS) on a mobile network. The IVS can get higher priority from the mobile network right after an eCall emergency is triggered at the IVS. When requesting a connection to the mobile network, the IVS can use an “emergency setup” message instead of a conventional “registration” message in order to register on the network.