Resource migration method and apparatus

A resource migration method, wherein the method comprises:

• receiving a first resource creation request, by a first SFE, where the first resource creation request is used to request the first SFE to create a resource according to the first resource creation request, the first resource creation request registers a terminal device with the first SFE, and the first resource creation request does not carry a first identifier and information about a location of a resource/subresource corresponding to the terminal device in a second SFE;
• receiving, by the first SFE, the first identifier and information about the location of the resource/subresource corresponding to the terminal device in the second SFE, wherein the first identifier is used to indicate that the terminal device needs to change an SFE serving the terminal device;
• sending a resource retrieve request to the second SFE, wherein the resource retrieve request comprises the information about the location of the resource/subresource corresponding to the terminal device in the second SFE;
• and
• receiving and storing content, which is returned by the second SFE, of the resource/subresource.

A resource migration apparatus, wherein the apparatus comprises:

• a memory, a processor, a transmitter, and a receiver;
• the memory is configured to store a set of program code, and the processor is configured to invoke the program code stored in the memory to:
• determine that a service function entity SFE serving the terminal device needs to be changed to a first SFE;
• and
• acquire information about a location of a resource/subresource corresponding to the terminal device in a second SFE, wherein the second SFE saves the resource/subresource corresponding to the terminal device;
• and
• the transmitter is configured to
• send a first resource creation request to the first SFE, where the first resource creation request is used to request the first SFE to create a resource according to the first resource creation request, the first resource creation request registers the terminal device with the first SFE, and the first resource creation request does not carry a first identifier and the information about the location of the resource/subresource corresponding to the terminal device in the second SFE;
• and
• send, to the first SFE, a first identifier and the acquired information, wherein the first identifier is used to indicate that the terminal device needs to change the SFE serving the terminal device, so that, after receiving the first identifier, the first SFE transfers the resource/subresource from the second SFE to the first SFE.