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 apparatus comprising:
a network component configured to:
receive from a user equipment (“UE”) a Session Initiation Protocol (“SIP”) request message for a dialog that is an emergency-related request;
update header information of the SIP request message for a dialog;
forward the SIP request message for a dialog toward a Public Safety Answering Point (“PSAP”);
send to the UE a SIP response message in response to the SIP request message, the SIP response message containing a P-Asserted-Identity header field with an indicator indicating that the SIP request message for a dialog, sent by the UE, is an emergency-related request, that the network component is part of a trust domain, and that the UE should include location information in a response to the SIP response message; and
receive from the UE, in response to the SIP response message, a SIP request message within the dialog, the SIP request message within the dialog containing emergency-related information associated with the UE.
2. The apparatus 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 apparatus 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 apparatus 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 apparatus of claim 1 , wherein the network component is an E-CSCF (emergency call session control function).
6. The apparatus of claim 1 , wherein the SIP response message is one of a SIP 1xx or 200 (OK) response.
7. The apparatus 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; and
a SIP RE-INVITE request.
8. The apparatus of claim 7 , wherein the SIP request message is a SIP INVITE request.
9. The apparatus of claim 2 , wherein the UE identity is a globally routable user agent uniform resource identifier (GRUU).
10. The apparatus 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 apparatus 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 apparatus 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 apparatus of claim 4 , wherein the UE access network information is included in a P-Access-Network-Info 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. 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”);
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-Identity header field with an indicator indicating that a SIP request message for a dialog, sent by the UE, is an emergency-related request, that the network component is part of a trust domain, and that the UE should include location information in a response to the SIP response message; and
receiving from the UE, in response to the SIP response message, a SIP request message within the dialog, the SIP request message within the dialog containing emergency-related information associated with the UE.
15. The method of claim 14 , wherein the emergency-related information associated with the UE contained in the SIP request message within the dialog comprises a UE identity.
16. The method of claim 14 , wherein the emergency-related information associated with the UE contained in the SIP request message within the dialog comprises a UE location.
17. The method of claim 14 , wherein the emergency-related information associated with the UE contained in the SIP request message within the dialog comprises UE access network information.
18. The method of claim 14 , wherein the network component is an E-CSCF (emergency call session control function).
19. The method of claim 14 , wherein the SIP response message is one of a SIP 1xx or 200 (OK) response.
20. The method of claim 14 , wherein the SIP request message within the dialog is one of:
a SIP ACK,
a SIP PRACK,
a SIP target refresh;
a SIP UPDATE, and
a SIP RE-INVITE request.
21. The method of claim 20 , wherein the SIP request message is a SIP INVITE request.
22. The method of claim 15 , wherein the UE identity is a globally routable user agent uniform resource identifier (GRUU).
23. The method of claim 16 , 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.
24. The method of claim 14 , wherein a message body of the SIP request message within the dialog includes geographical location information of the UE as a PIDF location object.
25. The method of claim 14 , wherein a contact header field of the SIP request message within the dialog includes a public GRUU value associated with a public user identity.
26. The method of claim 17 , wherein the UE access network information is included in a P-Access-Network-Info 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.
27. The apparatus of claim 1 , wherein the emergency-related information associated with the UE is not contained in the SIP request message for a dialog.
28. The apparatus 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”).
29. The apparatus of claim 1 , wherein the indicator indicates a PSAP function.
30. The apparatus of claim 1 , wherein the indicator indicates 911.
31. The method of claim 14 , 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 14 , 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 14 , wherein the indicator indicates a PSAP function.
34. The method of claim 14 , wherein the indicator indicates 911.
35. A tangible, non-transitory, computer readable medium storing computer readable instructions executable by a processor of a computing device to cause said device to implement the method of claim 14 .