System and method for providing location information to a public safety answering point during an emergency 911 call from a WiFi handset
First Claim
1. A system for providing location information to a public-safety answering point during an emergency 911 call, the system comprising:
- a network access point configured to;
store physical address information comprising a street number and name and ZIP code of a physical location associated with a wireless device;
receive an emergency 911 call from the wireless device;
in response to receiving the emergency 911 call, generate a modified caller identification frequency shift keying (CIFSK) signal containing the stored physical address information, wherein generating a modified CIFSK signal comprises;
retrieving the stored physical address information; and
modifying the CIFSK signal by replacing data in a first, 168-bit, data field of the CIFSK signal with a first string of 14 characters or less comprising the stored street number and name, a second string of two characters comprising a street type and a third string of five characters comprising the stored ZIP code, and replacing data in a second, 144-bit, data field of the CIFSK signal with a character string comprising a combination of name, phone number, and time data; and
transmit the modified CIFSK signal to cause a public safety answering point (PSAP) with E911 Phase I capabilities to display the stored physical address information contained in the modified CIFSK signal on a type II caller ID device after the PSAP goes off-hook to receive the emergency 911 call.
2 Assignments
0 Petitions
Accused Products
Abstract
A system and method for providing location information to a public safety answering point may include receiving, at a network access point, an emergency 911 call signal including GPS location information and mobile directory number of a wireless device. The GPS location information and mobile directory information may be communicated to a selective muter associated with a public safety access point servicing an area including the network access point. The network access point may be a WiFi access point. The access point address information may be communicated using a type II caller ID data packet after the public safety answering point goes off-hook By communicating both the access point address information and GPS location information, both PSAPs that are configured as E911 Phase I and E911 Phase II may display address location information of an emergency 911 caller.
157 Citations
20 Claims
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1. A system for providing location information to a public-safety answering point during an emergency 911 call, the system comprising:
a network access point configured to; store physical address information comprising a street number and name and ZIP code of a physical location associated with a wireless device; receive an emergency 911 call from the wireless device; in response to receiving the emergency 911 call, generate a modified caller identification frequency shift keying (CIFSK) signal containing the stored physical address information, wherein generating a modified CIFSK signal comprises; retrieving the stored physical address information; and modifying the CIFSK signal by replacing data in a first, 168-bit, data field of the CIFSK signal with a first string of 14 characters or less comprising the stored street number and name, a second string of two characters comprising a street type and a third string of five characters comprising the stored ZIP code, and replacing data in a second, 144-bit, data field of the CIFSK signal with a character string comprising a combination of name, phone number, and time data; and transmit the modified CIFSK signal to cause a public safety answering point (PSAP) with E911 Phase I capabilities to display the stored physical address information contained in the modified CIFSK signal on a type II caller ID device after the PSAP goes off-hook to receive the emergency 911 call. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for providing location information to a public safety answering point, the method comprising:
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storing, at a network access point, physical address information comprising a street number and name and ZIP code of a physical location associated with a wireless device; receiving an emergency 911 call from the wireless device; in response to receiving the emergency 911 call, generating a modified caller identification frequency shift keying (CIFSK) signal containing the stored physical address information, wherein generating a modified CIFSK signal comprises; retrieving the stored physical address information; and modifying the CIFSK signal by replacing data in a first, 168-bit, data field of the CIFSK signal with a first string of 14 characters or less comprising the stored street number and name, a second string of two characters comprising a street type and a third string of five characters comprising the stored ZIP code, and replacing data in a second, 144-bit, data field of the CIFSK signal with a character string comprising a combination of name, phone number, and time data; and transmitting the modified CIFSK signal to cause a public safety answering point (PSAP) with E911 Phase I capabilities to display stored physical address information contained in the modified CIFSK signal on a type II caller ID device after the PSAP goes off-hook to receive the emergency 911 call. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification