Patent ID: 8982840
Filing Date: 2015-03-17
Classification: H04W

Abstract:
1. A user equipment for performing a handover from a first radio access network to a second radio access network, the first radio access network supporting packet switched communications and the second radio access network supporting circuit switched communications, the user equipment comprising: a controller configured to participate in a first voice-and-multimedia communications session in the first radio access network, the first voice-and-multimedia communications session comprises a voice communications component and a multimedia communications component, during handover from the first radio access network to the second radio access network, to transfer the voice communications component from the first radio access network to the second radio access network, and responsive to the handover, to send a first message to a node of the second radio access network to provide a second voice-and-multimedia communications session in the second radio access network, to continue the first voice-and-multimedia communications session.