Network standard switching method and apparatus, and device

An apparatus, comprising:

• at least one processor;
• and
• a memory coupled to the at least one processor and storing programming instructions that, when executed by the at least one processor, cause the apparatus to:
• obtain a network switching instruction that instructs a terminal device to be handed over to a target network, wherein a priority of the target network is greater than a first priority of a first network in which the terminal device is currently located;
• repeatedly obtain, within time intervals of a preset time period, an uplink data volume and a downlink data volume corresponding to the terminal device until the uplink data volume is less than a first threshold and the downlink data volume is less than a second threshold, wherein the uplink data volume comprises a first quantity of packets or a first size of data sent by the terminal device to a currently accessed first base station in the preset time period, and wherein the downlink data volume comprises a second quantity of packets or a second size of data received by the terminal device from the currently accessed first base station in the preset time period;
• release a first network link between the terminal device and the currently accessed first base station when the uplink data volume is less than the first threshold and the downlink data volume is less than the second threshold;
• intercept and cache to-be-sent application-layer data of the terminal device;
• discard a paging message in a packet switched (PS) domain received from the first network to the terminal device;
• and
• hand over the terminal device to the target network.

A non-transitory computer-readable storage medium storing computer-readable program code that, when executed by a processor of a terminal device, causes the terminal device to:

• obtain a network switching instruction that instructs the terminal device to be handed over to a target network, wherein a priority of the target network is greater than a first priority of a first network in which the terminal device is currently located;
• repeatedly obtain, within time intervals of a preset time period, an uplink data volume and a downlink data volume corresponding to the terminal device until the uplink data volume is less than a first threshold and the downlink data volume is less than a second threshold, wherein the uplink data volume comprises a first quantity of packets or a first size of data sent by the terminal device to a currently accessed first base station in the preset time period, and wherein the downlink data volume comprises a second quantity of packets or a second size of data received by the terminal device from the currently accessed first base station in the preset time period;
• release a first network link between the terminal device and the currently accessed first base station when the uplink data volume is less than the first threshold and the downlink data volume is less than the second threshold;
• intercept and cache to-be-sent application-layer data of the terminal device;
• discard a paging message in a packet switched (PS) domain received from the first network to the terminal device;
• and
• hand over the terminal device to the target network.