Send configuration information and transmit antenna selection method, system and apparatus

Example embodiments relate to wireless communication technical field of the present invention, particularly to a method for transmitting the configuration information and the selection of the transmitting antenna, systems and equipment for implementing a carrier aggregation environment in the UE may select the transmission antenna. Example of the present invention, is applied to carrier aggregation, comprising: a plurality of configuration information of transmit antennas of the user equipment receives a network side; the user equipment according to the received configuration information, transmit antenna selection. Since the UE may select the transmission antenna implemented in a carrier aggregation environment, so that the multicarrier transmitting antenna selection capability and has a function to normal UE using the antenna selection function in a carrier aggregation environment, thereby improving the transmission performance and resource utilization of the UE.