Patent ID: 7730127

Claim:
A method for video sharing, comprising the steps of: receiving, by an application server AS, a video sharing request containing a uniform resource identifier URI of a terminating UE; notifying, by the AS, the terminating UE to register if the AS determines that the terminating UE is not IMS core network registered after receiving the video sharing request containing the URI of the terminating UE; and providing, by the AS, a video sharing service for an originating UE and the terminating UE, after the terminating UE activates a GPRS connection and registers with an IMS core network, wherein the AS comprises a terminating AS, and the process of receiving a video sharing request comprises the step of: receiving, by the terminating AS, the video sharing request containing the URI of the terminating UE from a terminating IP multimedia subsystem (IMS) core network; and wherein the process of notifying the terminating UE to register comprises the steps of: obtaining, by the terminating AS, a MSISDN of the terminating UE from a home network of the terminating UE according to the URI of the terminating UE; and sending, by the terminating AS, a short message containing a service identifier to the terminating UE via a short message center according to the MSISDN of the terminating UE, to notify the terminating UE to register with the terminating IMS core network.