发明名称 |
System and method for providing emergency service in an IP-based wireless network |
摘要 |
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. |
申请公布号 |
US9049551(B2) |
申请公布日期 |
2015.06.02 |
申请号 |
US201314089693 |
申请日期 |
2013.11.25 |
申请人 |
T-Mobile USA, Inc. |
发明人 |
Dunn Timothy N.;Narkar Vishal;Hooker Michael |
分类号 |
H04W4/00;H04W4/02;H04M3/51;H04M7/00;H04W4/20;H04W4/22;H04W76/00;H04W80/10;H04L29/06 |
主分类号 |
H04W4/00 |
代理机构 |
Perkins Coie LLP |
代理人 |
Perkins Coie LLP |
主权项 |
1. A system for providing emergency communication services in a wireless network implementing an IP Multimedia Subsystem (IMS) architecture, the system comprising:
a first communication component configured to:
receive a session initiation protocol (SIP) message from a calling device,
wherein the SIP message includes a request to initiate an emergency communication session, a device identifier, and a geographical location of the calling device; andsend an emergency response center information request based on the received SIP message and including the calling device location; and a second communication component configured to:
receive the emergency response center information request;determine a destination emergency response center proximate to the calling device,
wherein the destination emergency response center is determined by identifying an emergency response center that has a geographical coverage area encompassing the geographical location of the calling device; andprovide the destination emergency response center to the first communication component in response to the emergency response center information request; wherein the first communication component is further configured to:
modify the received SIP message to generate a modified SIP message containing routing information associated with the destination emergency response center; andsend the modified SIP message to the destination emergency response center. |
地址 |
Bellevue WA US |