System and method for managing emergency requests
View Patent ↗A network component is provided. The network component including a component configured such that the network transmits a response message containing an indicator indicating that a first message is an emergency-related request, and such that the network receives a second message containing information associated with a user equipment (UE).
1. An network component, comprising:
a receiver configured to receive from a user equipment (“UE”) a Session Initiation Protocol (“SIP”) request message for a dialog that is an emergency-related request;
one or more processors configured to update header information of the SIP request message for a dialog;
an interface configured to forward the SIP request message for a dialog toward a Public Safety Answering Point (“PSAP”); and
a transmitter configured to send to the UE a SIP response message in response to the SIP request message, the SIP response message containing a P-Asserted-ldentity header field indicating that the network component is part of a trust domain, the P-Asserted-Identity header field including an indicator indicating that the SIP request message for a dialog, sent by the UE, is an emergency-related request, and that the UE should include emergency-related information associated with the UE in a SIP request message within the dialog in response to the SIP response message, the emergency-related information comprising location information;
wherein the indicator comprises a number.
2. The network component of claim 1 , wherein the emergency-related information associated with the UE contained in the SIP request message within the dialog comprises a UE identity.
3. The network component of claim 1 , wherein the emergency-related information associated with the UE contained in the SIP request message within the dialog comprises a UE location.
4. The network component of claim 1 , wherein the emergency-related information associated with the UE contained in the SIP request message within the dialog comprises UE access network information.
5. The network component of claim 1 , wherein the network component is an E-CSCF (emergency call session control function).
6. The network component of claim 1 , wherein the SIP response message is one of a SIP 1xx or 200 (OK) response.
7. The network component of claim 1 , wherein the SIP request message within the dialog is one of:
a SIP ACK;
a SIP PRACK;
a SIP target refresh;
a SIP UPDATE; or
a SIP RE-INVITE request.
8. The network component of claim 7 , wherein the SIP request message is a SIP INVITE request.
9. The network component of claim 2 , wherein the UE identity is a globally routable user agent uniform resource identifier (GRUU).
10. The network component of claim 3 , wherein a geolocation header field of the SIP request message within the dialog includes a URI (Uniform Resource Identifier) that points to the UE location.
11. The network component of claim 1 , wherein a message body of the SIP request message within the dialog includes geographical location information of the UE as a PIDF location object.
12. The network component of claim 1 , wherein a contact header field of the SIP request message within the dialog includes a public GRUU value associated with a public user identity.
13. The network component of claim 4 , wherein the UE access network information is included in a P-Access-Network-lnfo header field in the SIP request message within the dialog and comprises one of a location identifier, a cell identifier or an identity of an WLAN access node.
14. The network component of claim 1 , wherein the emergency-related information associated with the UE is not contained in the SIP request message for a dialog.
15. The network component of claim 1 , wherein the indicator indicating that a SIP request message for a dialog is an emergency-related request comprises a Uniform Resource Name (“URN”).
16. The network component of claim 1 , wherein the indicator indicates a PSAP function.
17. The network component of claim 1 , wherein the indicator indicates 911.
18. A method for a network component to manage emergency-related information, comprising:
receiving from a user equipment (“UE”) a Session Initiation Protocol (“SIP”) request message for a dialog that is an emergency-related request;
updating header information of the SIP request message for a dialog;
forwarding the SIP request message for a dialog toward a Public Safety Answering Point (“PSAP”); and
sending from the network component to the UE a SIP response message in response to the SIP request message, the SIP response message containing a P-Asserted-ldentity header field indicating that the network component is part of a trust domain, the P-Asserted-ldentity header field including an indicator indicating that the SIP request message for a dialog, sent by the UE, is an emergency-related request, and that the UE should include emergency-related information associated with the UE in a SIP request message within the dialog in response to the SIP response message, the emergency-related information comprising location information;
wherein the indicator comprises a number.
19. The method of claim 18 , wherein the emergency-related information associated with the UE contained in the SIP request message within the dialog comprises a UE identity.
20. The method of claim 18 , wherein the emergency-related information associated with the UE contained in the SIP request message within the dialog comprises a UE location.
21. The method of claim 18 , wherein the emergency-related information associated with the UE contained in the SIP request message within the dialog comprises UE access network information.
22. The method of claim 18 , wherein the network component is an E-CSCF (emergency call session control function).
23. The method of claim 18 , wherein the SIP response message is one of a SIP 1xx or 200 (OK) response.
24. The method of claim 18 , wherein the SIP request message within the dialog is one of:
a SIP ACK;
a SIP PRACK;
a SIP target refresh;
a SIP UPDATE; or
a SIP RE-INVITE request.
25. The method of claim 24 , wherein the SIP request message is a SIP INVITE request.
26. The method of claim 19 , wherein the UE identity is a globally routable user agent uniform resource identifier (GRUU).
27. The method of claim 20 , wherein a geolocation header field of the SIP request message within the dialog includes a URI (Uniform Resource Identifier) that points to the UE location.
28. The method of claim 18 , wherein a message body of the SIP request message within the dialog includes geographical location information of the UE as a PIDF location object.
29. The method of claim 18 , wherein a contact header field of the SIP request message within the dialog includes a public GRUU value associated with a public user identity.
30. The method of claim 21 , wherein the UE access network information is included in a P-Access-Network-lnfo header field in the SIP request message within the dialog and comprises one of a location identifier, a cell identifier or an identity of an WLAN access node.
31. The method of claim 18 , wherein the emergency-related information associated with the UE is not contained in the SIP request message for a dialog.
32. The method of claim 18 , wherein the indicator indicating that a SIP request message for a dialog is an emergency-related request comprises a Uniform Resource Name (“URN”).
33. The method of claim 18 , wherein the indicator indicates a PSAP function.
34. The method of claim 18 , wherein the indicator indicates 911.
35. A non-transitory computer readable medium storing instructions to cause a processor to perform operations comprising:
receiving from a user equipment (“UE”) a Session Initiation Protocol (“SIP”) request message for a dialog that is an emergency-related request;
updating header information of the SIP request message for a dialog;
forwarding the SIP request message for a dialog toward a Public Safety Answering Point (“PSAP”); and
sending from the network component to the UE a SIP response message in response to the SIP request message, the SIP response message containing a P-Asserted-ldentity header field indicating that the network component is part of a trust domain, the P-Asserted-ldentity header field including an indicator indicating that the SIP request message for a dialog, sent by the UE, is an emergency-related request, and that the UE should include emergency-related information associated with the UE in a SIP request message within the dialog in response to the SIP response message, the emergency-related information comprising location information;
wherein the indicator comprises a number.
36. The computer readable medium of claim 35 , wherein the indicator indicates 911.
37. The computer readable medium of claim 35 , wherein the emergency-related information associated with the UE is not contained in the SIP request message for a dialog.
38. The computer readable medium of claim 35 , wherein the indicator indicating that a SIP request message for a dialog is an emergency-related request comprises a Uniform Resource Name (“URN”).
39. The computer readable medium of claim 35 , wherein the indicator indicates a PSAP function.
40. The computer readable medium of claim 35 , wherein the indicator indicates 911.