The present invention provides a method including receiving, by a terminal, a switching command is large. The method includes: acquiring designated channel resource information from channel resources used by a source base station; acquiring information of a relevant base station using a designated channel resource except the source base station; sending indication signaling to the relevant base station according to the information of the relevant base station, where the indication signaling carries the designated channel resource information, the indication signaling is used to instruct the relevant base station to stop using the designated channel resource when the mobile terminal switches to a target base station; sending a switching request message to the target base station; and sending the switching command to the mobile terminal through the designated channel resource.