Optionally, the transceiver unit is further configured to: send a first message to a second network device, where the first message is used to notify the second network device of a successful handover of the terminal device, and the second network device is a network device to which the first target cell belongs.
The first message includes at least one of the following information: a cell radio network temporary identifier C-RNTI allocated by the serving cell to the terminal, a cell global identifier CGI of the serving cell, a physical cell identifier PCI of the serving cell, and a message authentication code for integrity MAC-I.
Optionally, the conditional handover configuration information and the measurement configuration information are received by the transceiver unit by using one piece of signaling.
Optionally, the conditional handover configuration information includes at least one of the following information: a cell identifier of the candidate target cell, frequency information of the candidate target cell, a C-RNTI allocated by the candidate target cell to the terminal device, an identifier of a first beam that belongs to the candidate target cell, and a first random access channel RACH resource.