System and method for providing emergency service in an IP-based wireless network
US9668090B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2015 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | Jun 1, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W80/10
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An E-CSCF receives a Session Initiation Protocol (“SIP”) invitation message initiating an emergency communication session from a calling device. The E-CSCF generates an information request message based on the received SIP message and sends the information request message to a location server. The location server determines a geographical location of the calling device and uses the geographical location to determine a destination emergency response center, such as a Public Safety Access Point (PSAP). The location server provides location information for the destination PSAP to the E-CSCF. The E-CSCF generates a modified SIP invitation message using the presence information and sends the modified SIP invitation message to an emergency services network where it is routed to the emergency response center.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.