SRVCC EMERGENCY CALL SUPPORT APPARATUS, SYSTEM AND METHOD
Method and apparatus, including computer program products, are provided for SRVCC emergency call support. The method may include receiving, at a mobility switching center, a first message representing a request to handover an emergency communication session from a first network to a second network. The mobile switching center may obtain a value representing an emergency session transfer number. The mobility switching center may also send a second message to the first network. The second message may initiate handover of the emergency communication session from the first network to the second network. The second message may comprise the value representing the emergency session transfer number. Related apparatus, systems, methods, and articles are Receive Session Continuity Data also described.
1 .- 20 . (canceled)
21 . A method comprising: receiving a first message representing a request to handover an emergency communication session from a first network to a second network; obtaining a value representing an emergency session transfer number; and sending a second message to the first network, the second message initiating handover of the emergency communication session from the first network to the second network, the second message comprising the value representing the emergency session transfer number.
22 . The method of claim 21 , wherein the value representing the emergency session transfer number is obtained at a mobility switching center.
23 . The method of claim 21 , wherein the value representing the emergency session transfer number is common to a plurality of emergency communication sessions.
24 . The method of claim 21 , wherein the first network is an internet protocol multimedia subsystem, and wherein the second network is at least one of a second generation cellular communications network and a third generation cellular communications network.
25 . The method of claim 21 , wherein the value representing the emergency session transfer number is generated at a mobility switching center.
26 . The method of claim 21 , wherein the value representing the emergency session transfer number comprises an international telecommunications union E.164 address.
27 . The method of claim 21 , wherein the second message comprises a session initiation protocol invite message.
28 . The method of claim 21 , wherein the first message initiates a single radio voice call continuity for an internet protocol multimedia subsystem emergency communication session.
29 . The method of claim 21 , wherein receiving further comprises: receiving, at a visited network, the first message.
30 . An apparatus comprising: at least one processor and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, provide operations comprising: receiving a first message representing a request to handover an emergency communication session from a first network to a second network; obtaining a value representing an emergency session transfer number; and sending a second message to the first network, the second message initiating handover of the emergency communication session from the first network to the second network, the second message comprising the value representing the emergency session transfer number.
31 . The apparatus of claim 30 , wherein the value representing the emergency session transfer number is obtained locally.
32 . The apparatus of claim 30 , wherein the value representing the emergency session transfer number is common to a plurality of emergency communication sessions.
33 . The apparatus of claim 30 , wherein the first network is an internet protocol multimedia subsystem, and wherein the second network is at least one of a second generation cellular communications network and a third generation cellular communications network.
34 . The apparatus of claim 30 , wherein the value representing the emergency session transfer number is generated locally.
35 . The apparatus of claim 30 , wherein the value representing the emergency session transfer number comprises an international telecommunications union E.164 address.
36 . A computer-readable storage medium including code which when executed on at least one processor provides at least the following: receiving a first message representing a request to handover an emergency communication session from a first network to a second network; obtaining a value representing an emergency session transfer number; and sending a second message to the first network, the second message initiating handover of the emergency communication session from the first network to the second network, the second message comprising the value representing the emergency session transfer number.
37 . The computer-readable storage medium of claim 36 , wherein the value representing the emergency session transfer number is obtained at a mobility switching center.
38 . The computer-readable storage medium of claim 36 , wherein the value representing the emergency session transfer number is common to a plurality of emergency communication sessions.
39 . The computer-readable storage medium of claim 36 , wherein the first network is an internet protocol multimedia subsystem, and wherein the second network is at least one of a second generation cellular communications network and a third generation cellular communications network.
40 . The computer-readable storage medium of claim 36 , wherein the value representing the emergency session transfer number is generated at a mobility switching center.