Patent ID: 9445265
Filing Date: 2016-09-13
CPC Classification: H04L,H04W

Claim Text:
1. A method for processing Single Radio Voice Call Continuity (SRVCC) switching, comprising: after a terminal receives an SRVCC switching command sent by a network side, determining, by the terminal, whether a Packet Switching (PS) domain voice service under a current system of the terminal is subjected to encryption and integrity protection; when the PS domain voice service under the current system of the terminal is subjected to encryption and integrity protection, converting PS domain authentication parameters in the current system into Circuit Switching (CS) domain authentication parameters and PS domain authentication parameters in a target system; storing, the CS domain authentication parameters and the PS domain authentication parameters in the target system into a temporary data area which can be accessed by a Non-Access Stratus (NAS) and an Access Stratus (AS), and setting a switch variable for the temporary data area; and when the terminal determines that the SRVCC switching succeeds, writing, into a card, the CS domain authentication parameters and the PS domain authentication parameters in the target system stored in the temporary data area, and setting the switch variable as reading from the card.