The present application provide a method includes: establishing, by a base station, a CP connection to a UE according to a configuration parameter of the CP connection and a UP connection to the UE according to a configuration parameter of the UP connection, where a transmission channel occupied by the CP connection which is indicated by the configuration parameter of the CP connection is different from the transmission channel occupied by the UP connection which is indicated by the configuration parameter of the UP connection, and transmission channels occupied by the CP connection and UP connection are also different. Therefore, the CP connection and the UP connection are not interrupted at the same time, which leads to no call drop occurring in a communication connection and improves user experience; and reduces a time delay, increases a network throughput, and further improves data transmission flexibility in an UP connection.