SRVCC HANDOVER METHOD AND DEVICE UNDER S8HR ROAMING ARCHITECTURE

摘要

The present invention relates to the technical field of wireless communications, and particularly to an SRVCC handover method and device under an S8HR roaming architecture. The method comprises: a first anchoring apparatus receives a first call request and allocates first user plane resource information to a VoLTE call; send a second call request to a second anchoring apparatus, and receive a second call response sent by the second anchoring apparatus, the second call response carrying second user plane resource information allocated to the VoLTE call by the second anchoring apparatus; receive, when SRVCC handover occurs to the VoLTE call, a first access switching update request sent by the second anchoring apparatus, and send a second access switching update request to an application server (AS) or a serving call session control function (S-CSCF) according to the first access switching update request, the first and second access switching update requests being used for requesting to establish a new session between the second anchoring apparatus and the AS or between the second anchoring apparatus and the S-CSCF and to make the AS or S-CSCF associate the new session with a remote session.