SRVCC Capability Information Transmission Method and Apparatus, and System

An apparatus, comprising:

• a processor;
• and
• a non-transitory computer readable storage medium, wherein the non-transitory computer readable storage medium stores a program, and when the program is executed by the processor, the following is performed:
• obtaining single radio voice call continuity (SRVCC) capability information of a terminal from the terminal, wherein a core network (CN) network element is located in a second-standard network to which the terminal is handed over from a first-standard network using an inter-RAT handover, a second-standard network in which the CN network element is located, the first-standard network does not support an SRVCC function, and the second-standard network supports the SRVCC function;
• and
• sending the SRVCC capability information to a radio access network (RAN) network element;
• wherein the apparatus is located in the CN network element.

An apparatus, comprising:

• a processor;
• and
• a non-transitory computer readable storage medium, wherein the non-transitory computer readable storage medium stores a program, and when the program is executed by the processor, the following is performed:
• receiving single radio voice call continuity (SRVCC) capability information of a terminal sent by a core network (CN) network element, wherein a radio access network (RAN) network element is located in a second-standard network to which the terminal is handed over from a first-standard network using an inter-RAT handover, the first-standard network does not support an SRVCC function, and the second-standard network supports the SRVCC function;
• and
• sending a response message to the CN network element;
• wherein the apparatus is located in the RAN network element.

An apparatus, located in a terminal and comprising:

• a processor;
• and
• a non-transitory computer readable storage medium, wherein the non-transitory computer readable storage medium stores a program, and when the program is executed by the processor, the following is performed:
• accessing a second-standard network from a first-standard network using an inter-RAT handover, wherein the first-standard network does not support a single radio voice call continuity (SRVCC)function, and the second-standard network supports the SRVCC function;
• and
• sending SRVCC capability information of the terminal to a core network (CN) network element in the second-standard network, so that the CN network element sends the SRVCC capability information of the terminal to a radio access network (RAN) network element in the second-standard network according to an SRVCC capability of the CN network element.