A method to be executed by a base station for implementing channel measurement, comprising: determining an antenna port subset, which is required to be measured, for a user equipment, UE, according to current state information of the UE, wherein the antenna port subset is formed by one or more antenna ports from all antenna ports; and informing the UE to perform channel measurement for the antenna port subset that is required to be measured and feed back channel state information, wherein: the determining the antenna port subset, which is required to be measured, for the UE according to the current state information of the UE comprises: selecting the antenna port subset, which is required to be measured, from pre-partitioned antenna port subsets, for the UE according to the current state information of the UE, and wherein the antenna port subsets comprise an antenna port subset applicable to different moving speeds of UEs; the current state information of the UE comprises a current moving speed of the UE; and the selecting the antenna port subset, which is required to be measured, from pre-partitioned antenna port subsets, for the UE according to the current state information of the UE comprises: selecting the antenna port subset applicable to the moving speed of the UE according to the current moving speed of the UE. determining an antenna port subset, which is required to be measured, for a user equipment, UE, according to current state information of the UE, wherein the antenna port subset is formed by one or more antenna ports from all antenna ports; and informing the UE to perform channel measurement for the antenna port subset that is required to be measured and feed back channel state information, wherein: the determining the antenna port subset, which is required to be measured, for the UE according to the current state information of the UE comprises: selecting the antenna port subset, which is required to be measured, from pre-partitioned antenna port subsets, for the UE according to the current state information of the UE, and wherein the antenna port subsets comprise an antenna port subset applicable to different moving speeds of UEs; the current state information of the UE comprises a current moving speed of the UE; and the selecting the antenna port subset, which is required to be measured, from pre-partitioned antenna port subsets, for the UE according to the current state information of the UE comprises: selecting the antenna port subset applicable to the moving speed of the UE according to the current moving speed of the UE. selecting the antenna port subset, which is required to be measured, from pre-partitioned antenna port subsets, for the UE according to the current state information of the UE, and wherein the antenna port subsets comprise an antenna port subset applicable to different moving speeds of UEs; the current state information of the UE comprises a current moving speed of the UE; and the selecting the antenna port subset, which is required to be measured, from pre-partitioned antenna port subsets, for the UE according to the current state information of the UE comprises: selecting the antenna port subset applicable to the moving speed of the UE according to the current moving speed of the UE.