Patent ID: 9031040
Filing Date: 2015-05-12
Classification: H04W

Abstract:
1. A method for an inter-RAT handover for a Packet Switch (PS) service in a dual mode Radio Network Controller (RNC), to support the inter-RAT handover optimization flow of the PS service in the dual-mode RNC, thereby shortening an inter-RAT handover delay of the PS service and enhancing an inter-RAT handover success rate of the PS service, comprising: in a process of handing over a PS service from an RNC system to a destination Base Station Controller (BSC) system within a dual mode RNC, wherein the dual mode RNC comprises the RNC system and the destination BSC system, executing an inter-RAT relocation flow and a radio resource allocation flow of the destination BSC system in parallel, and before the radio resource allocation flow is completed, informing a Central Network (CN) of encryption indication information; the CN sending the encryption indication information to the BSC, and the BSC forwarding user data to the CN according to the encryption indication information.