System and method for managing emergency requests
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 that is part of a trust domain 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 containing a P-Asserted-Identity header field in response to the SIP request message, the P-Asserted-Identity header field comprising an emergency number, the SIP response message indicating that the SIP request message for a dialog, sent by the UE, is an emergency-related request 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 comprises a UE location.
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 UE access network information.
4. The apparatus of claim 1 , wherein the network component is an E-CSCF (emergency call session control function).
5. The apparatus of claim 1 , wherein the SIP response message is one of a SIP 1xx or 200 (OK) response.
6. 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.
7. 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.
8. 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.
9. 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.
10. The apparatus of claim 1 , wherein the SIP request message for a dialog is a SIP INVITE request.
11. The apparatus of claim 2 , wherein the UE identity is a globally routable user agent uniform resource identifier (GRUU).
12. The apparatus of claim 1 , 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.
13. The apparatus of claim 3 , 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 that is part of a trust domain 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 containing a P-Asserted-Identity header field in response to the SIP request message, the P-Asserted-Identity header field comprising an emergency number, the SIP response message indicating that the SIP request message for a dialog, sent by the UE, is an emergency-related request 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 comprises a UE location.
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 UE access network information.
17. The method of claim 14 , wherein the network component is an E-CSCF (emergency call session control function).
18. The method of claim 14 , wherein the SIP response message is one of a SIP 1xx or 200 (OK) response.
19. 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.
20. 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.
21. 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.
22. 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.
23. The method of claim 14 , wherein the SIP request message for a dialog is a SIP INVITE request.
24. The method of claim 15 , wherein the UE identity is a globally routable user agent uniform resource identifier (GRUU).
25. The method of claim 14 , 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.
26. The method of claim 16 , 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. A tangible, non-transitory, computer readable medium storing computer readable instructions executable by a processor of a network component that is part of a trust domain to cause said network component to implement the method of:
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 containing a P-Asserted-Identity header field in response to the SIP request message, the P-Asserted-Identity header field comprising an emergency number, the SIP response message indicating that the SIP request message for a dialog, sent by the UE, is an emergency-related request 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 comprises a UE location.