Wireless Device Emergency Call Initiation Without Network Registration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current emergency call procedures for in-vehicle devices, such as eCall devices, often result in delays or failure of emergency calls due to the requirement for network registration before initiating the call, which can be time-consuming and may not be completed successfully, especially in situations where network registration is rejected or fails.
Innovation Solution
A wireless device method that transmits a request message for network attachment or location updating and subsequently attempts an emergency call regardless of the response, minimizing delays by setting a short timer for attempts and prioritizing emergency calls, allowing the call to be made promptly even if registration is not completed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wireless device waits for network registration completion before initiating emergency call, then network registration reliability is improved, but emergency call initiation time increases
Solution Approach 1:
The wireless device performs network registration procedures (attach request or location updating) in advance before the emergency call is actually needed. The device sends these registration requests as soon as an emergency situation is detected, and while waiting for the response, it prepares to initiate the emergency call. This preliminary action ensures that registration is attempted beforehand, improving reliability, while the device is already ready to make the call immediately if needed, minimizing time loss.
2Loss of time
If the wireless device attempts emergency call immediately without network registration, then emergency call initiation time is reduced, but call success rate decreases
Solution Approach 1:
The device performs network registration procedures in advance by sending attach requests or location updating requests immediately when emergency situation is detected, before the actual emergency call is initiated. This preliminary registration attempt improves the likelihood of call success while the device prepares to make the call without delay.
Solution Approach 2:
The patent introduces an intermediary mechanism where the device sends registration requests (attach or location updating) as a preliminary step that mediates between the need for quick call initiation and the need for successful call establishment. The device can proceed with emergency call attempt regardless of registration outcome, using the registration process as a helpful intermediary step that improves success rate without blocking the urgent call initiation.
3Ease of operation
If the wireless device waits for location update response before making emergency call, then network protocol compliance is improved, but emergency response time increases
Solution Approach 1:
The wireless device sends location updating requests or attach requests as preliminary actions immediately when emergency situation is detected, maintaining network protocol compliance. However, the device does not wait passively for the response - instead, it proceeds to initiate the emergency call without delay, regardless of whether the location update response is received. This approach maintains protocol compliance through the preliminary request while avoiding time loss by not blocking the emergency call on the response wait.
Data Source
AI summary
A wireless device transmits a request message for receipt by a wireless network to at least one of request attachment of the wireless device to the wireless network and request location updating for the wireless device from the wireless network. The wireless device subsequently attempts an emergency call to the wireless network regardless of whether or not the wireless device receives a response to the request. In this way, the wireless device can make the emergency call promptly and without significant delay.