Method and device for processing SRVCC switching, and terminal

摘要

A method and device for processing Single Radio Voice Call Continuity (SRVCC) switching, and a related terminal are disclosed. In a technical solution of the disclosure, two sets of authentication parameters can be stored during the process of SRVCC switching, one set of which is stored into a card and the other set is stored into a temporary data area, and specific access to the authentication parameters is controlled by a switch variable so that a user does not need to consider using which data area. It is determined, after the SRVCC switching succeeds or fails, whether authentication parameters in the temporary data area need to be written into the card. Calculated authentication parameters are directly written into the card after the SRVCC switching is started, so that update of the authentication parameters is more flexible and signalling interaction with a network can be reduced.

主权项

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.