Patent ID: 8477752

Claim:
An apparatus for a user equipment comprising: a processing system comprising at least one processor and at least one memory storing a computer program; in which the at least one memory with the computer program is configured with the at least one processor to cause the apparatus to at least: in response to determining that the user equipment, which has an active connection with a wireless network, needs to establish an emergency service, unilaterally deactivate by the user equipment an active session or context with the wireless network; and thereafter send to the wireless network with which the active session or context was deactivated, signaling to establish the emergency service, in which the signaling specifically identifies the service as an emergency service wherein the signaling to establish the emergency service comprises an extended service request that identifies one or more contexts that remain active after the unilateral deactivation of an active session or context by the user equipment and based thereon, current context status information of the user equipment being synchronized with the wireless network, and then establish an emergency service using that wireless network with which the active session or context was deactivated by the user equipment.