It should be understood that step 830 is corresponding to step 330. For related descriptions in step 830, refer to the foregoing descriptions in step 330. To avoid repetition, details are not described herein again.
840. The first network device sends conditional handover configuration information to the terminal device.
It should be understood that, in step 840, for the conditional handover configuration information, refer to the description in step 340 or step 440. The conditional handover configuration information may include all content of the conditional handover configuration information described in step 340 or step 440.
Specifically, after obtaining the conditional handover configuration information, the terminal device searches for a target cell (that is, the first target cell in the foregoing description) based on the configuration information.
850. The first network device sends a handover message to the terminal device.
Specifically, after the terminal device obtains the conditional handover configuration information, when a handover trigger condition is still not satisfied, that is, when the terminal device has not found the first target cell or in a process in which the terminal device searches for the first target cell that satisfies the trigger condition, the terminal device receives the handover message sent by the first network device. The handover message includes an identifier of the second target cell and a random access resource required for accessing the second target cell.