Handover

摘要

An improvements to Handover is provided. User equipment capable of participating in the handover of communications instances from a first radio access network to a second radio access network, the first radio access network being capable of supporting packet switched communications and the second radio access network being capable of supporting circuit switched communications is adapted to participate in a first voice-and-multimedia communications session in said first radio access network, as part of a communications instance, during handover of said communications instance from said first radio access network to said second radio access network, transfer a voice communications session, to continue said communications instance, and responsive to said handover, send a first message to a node of said second radio access network to provide a second voice-and-multimedia communications session in said second radio access network, to further continue said communications instance.

主权项

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.