METHOD AND APPARATUS FOR DUAL-MODE SINGLE-STANDBY WIRELESS VOICE CALL CONTINUITY BEFORE RINGING

摘要

Proposed in embodiments of the present invention are a method and apparatus for dual-mode single-standby wireless voice call continuity before ringing. The method comprises: before ringing on a called side, receiving a handover request message sent by the called side; caching the handover request message; and when a preset response state from the called side is received, on the basis of the handover request message, performing a handover request operation in a preset manner. According to the method for dual-mode single-standby wireless voice call continuity before ringing provided in the embodiments of the present invention, bSRVCC handover of the called side may be converted into aSRVCC/eSRVCC handover that is clearly and completely defined in the 3GPP specification, which improves the bSRVCC handover success rate of the called user, thereby improving the total handover success rate of VoLTE SRVCC on an LTE network, and optimizing the call experience of VoLTE users on the LTE network.