Wireless Device Location for Emergency Calls via Access Point
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Solution Overview
Problem
Current emergency calling systems face challenges in accurately determining the location of wireless callers, particularly in wireless networks, which can hinder timely dispatch of emergency services.
Innovation Solution
A method where a wireless device associates an access point identifier with location information, allowing the system to retrieve and transfer this information to an emergency service system when a call is made, enabling precise location sharing during emergency calls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If wireless carriers use cell tower location or triangulation techniques to determine caller location, then emergency service can be provided, but the location determination accuracy is insufficient compared to landline callers
Solution Approach 1:
The system pre-establishes associations between wireless device identifiers, access point identifiers, and location information in a database before emergency calls occur. When a call is made, the system simply queries this pre-built database using the access point identifier received from the device, eliminating the need for complex real-time location calculations.
Solution Approach 2:
The patent introduces an access point identifier as an intermediary element that links the wireless device to its location. Instead of directly determining location through complex wireless signal analysis, the system uses the access point identifier as a key to retrieve pre-stored location information from the database, simplifying the overall process.
2Loss of time
If the system stores and retrieves location information based on access point identifiers, then location information can be quickly provided to PSAP, but the system complexity increases due to database management requirements
Solution Approach 1:
The system performs the complex task of associating wireless device identifiers, access point identifiers, and location information in advance, before any emergency call occurs. This pre-processing eliminates the need for complex real-time calculations during emergencies, achieving fast response times while managing complexity through upfront preparation.
3Adaptability or versatility
If carriers implement multiple location determination solutions (cell tower location, triangulation, GPS), then various wireless scenarios can be covered, but the system becomes more complex and harder to manage
Solution Approach 1:
The patent creates a universal location determination system that works across different wireless scenarios (indoor, outdoor, mobile, stationary) by using a common approach: associating device identifiers with access point identifiers and storing location information in a unified database. This single system replaces multiple specialized solutions, maintaining versatility while reducing complexity.
Data Source
AI summary
A wireless device identifier and an access point identifier are associated with location information that identifies a location associated with a network access point that is associated with the access point identifier. Call signaling information requesting a call to an emergency service is received from a wireless device connected wirelessly to the network access point via a wireless network connection. The access point identifier is received from the wireless device. Based on the access point identifier, and the wireless device identifier, the location information is retrieved. The location information is transferred to an emergency service system. The call for the emergency service is established to the emergency service system.