VoIP Emergency Call Location via Network Address Matching

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Solution Overview

Problem

Traditional methods for locating VoIP users during emergency 911 calls are unreliable, as they rely on billing addresses, leading to delayed emergency responses and increased costs for service providers, as they require intermediate dispatch centers to determine the caller's location.

Innovation Solution

A processing unit configured to determine the current network address of a VoIP device and associate it with a user profile containing physical addresses, enabling direct location determination and routing of emergency calls to the appropriate Public Safety Answering Point (PSAP) without the need for an intermediate dispatch center.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If billing address is used to locate VoIP users during emergency calls, then the system is simple to implement, but the emergency response accuracy and speed deteriorate

Engineering Contradiction:
Improvesystem complexityVSAvoidlocation accuracy
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The system performs preliminary actions by determining the VoIP device's current network address before an emergency call occurs. The processing unit continuously monitors and tracks the device's network location, so when emergency 911 call is made, the location information is already available immediately without requiring manual operator intervention or complex real-time interrogation procedures.

Inventive Principle:
Principle #10Preliminary action

2Measurement precision

If an intermediate dispatch center is used to determine caller location, then location determination can be achieved, but the emergency response time increases and operational costs increase

Engineering Contradiction:
Improvelocation determination capabilityVSAvoidemergency response time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The invention extracts the location determination function from the intermediate dispatch center and integrates it directly into the VoIP service provider's network infrastructure. The processing unit within the VoIP network independently determines the caller's location by analyzing network address information, eliminating the need for operator intervention and manual location lookup procedures that delay emergency response.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces a processing unit as an automated intermediary between the VoIP device and the emergency services network. This processing unit automatically intercepts emergency calls, determines the device's current network address, identifies the corresponding physical location from stored location data, and routes the call to the appropriate PSAP without requiring human operators to perform these functions.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Measurement precision

If an intermediate dispatch center is used to determine caller location, then location information can be obtained, but the operational costs and labor requirements increase

Engineering Contradiction:
Improvelocation information accuracyVSAvoidoperational complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The system implements self-service by enabling the VoIP network's processing unit to automatically determine and act upon location information without requiring external dispatch centers or human operators. The processing unit autonomously queries network address data, matches it with stored location profiles, makes routing decisions, and completes the entire location determination and call routing process independently, eliminating labor-intensive manual operations.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS7940746B2Method and system for locating a voice over internet protocol (VoIP) device connected to a network
Publication Date: 2011.05.10 COMCAST CABLE COMM LLC
  • US7940746B2 patent drawing
  • US7940746B2 patent drawing

AI summary

A method and system for locating a device connected to a network by determining a current network address for the device and comparing the current network address to a network address in a user profile. If the network addresses match, the device is located based on a physical address associated with the network address in the user profile.