The activation antenna groups of a second terminal (UE1) are the CP1 and a third antenna group (CP2). If activation antenna groups of a first terminal (UE0) are a first antenna group (CP0) and a second antenna group (CP1), the main antenna group is CP0, and the two antenna groups maintain valid frequency offset information F O UE 0 cp 0 and F O UE 0 cp 0 respectively. In step 1, the uplink activation set as well as measurement information, such as the signal power, SINR and frequency offset of all user terminals, are monitored. When cell-level reference data (such as CRS, that is, cell-level dedicate reference data) is included on the resource block, during the processing, the processing of clearing or decreasing transmitting power may be performed on the cell-level reference data and valid data together, or the processing of clearing or decreasing transmitting power may be not performed on the cell-level reference data and valid data. It is to be noted that when UE-level reference data (such as DM-RS, that is, UE-level dedicated reference data) is included in the resource block, during the processing, the processing of clearing or decreasing transmitting power needs to be performed on the UE-level reference data and the valid data together. That is, the data, on which the clearing or decreasing the transmitting power, may be only the valid data on the resource block, or may also be the reference data and valid data. It is to be noted that the processing of clearing or decreasing transmitting power may be performed on only valid data in the resource block, or on reference data and valid data in the resource block. The determining manner may be selected according to practical application. Other two precise manners are: enabling the selective downlink data transmission function of the antenna group when the absolute value of the frequency offset value of the at least one antenna group in the uplink activation set is greater than or equal to the third preset threshold value as well as the absolute value of the frequency offset value of the at least one antenna group is not equal to the frequency offset value of the at least one antenna group alternatively, enabling the selective downlink data transmission function of the antenna group when the absolute value of the difference of frequency offset value between two antenna groups in the uplink activation set is greater than or equal to the second preset threshold value.

The simplest manner is to enabling the selective downlink data transmission function of the antenna groups when the absolute value of the frequency offset value of at least one antenna group in the uplink activation set is greater than or equal to the first preset threshold value.

It is to be noted that, in this case, three manners of enabling the selective downlink data transmission function of the antenna groups are provided.

Downlink existence ep