A method in a base station, comprising: obtaining historical scheduling characteristic information; reserving resources for multi-user multiple input multiple output, MU-MIMO, users, based at least on the historical scheduling characteristic information; allocating the reserved resources to the MU-MIMO users; and determining whether to use MU-MIMO based on at least one of the historical scheduling characteristic information and current resource demand information, wherein the resources are reserved for the MU-MIMO users when it is determined to use MU-MIMO, and wherein it is determined to use MU-MIMO when following conditions are satisfied: a number of users demanding dense traffic is above a first predetermined threshold; an average number of PRBs allocated to MU-MIMO users is below a second predetermined threshold; and a number of users with small package services is below a third predetermined threshold; OR wherein it is determined not to use MU-MIMO when one or more of following conditions are satisfied: a number of users demanding dense traffic is smaller than the first predetermined threshold; a number of users with small package services is greater than the third predetermined threshold; and a number of active users is below a fourth predetermined threshold, wherein the first predetermined threshold relates to that there are several MU users demanding dense traffic. obtaining historical scheduling characteristic information; reserving resources for multi-user multiple input multiple output, MU-MIMO, users, based at least on the historical scheduling characteristic information; allocating the reserved resources to the MU-MIMO users; and determining whether to use MU-MIMO based on at least one of the historical scheduling characteristic information and current resource demand information, wherein the resources are reserved for the MU-MIMO users when it is determined to use MU-MIMO, and wherein it is determined to use MU-MIMO when following conditions are satisfied: a number of users demanding dense traffic is above a first predetermined threshold; an average number of PRBs allocated to MU-MIMO users is below a second predetermined threshold; and a number of users with small package services is below a third predetermined threshold; OR wherein it is determined not to use MU-MIMO when one or more of following conditions are satisfied: a number of users demanding dense traffic is smaller than the first predetermined threshold; a number of users with small package services is greater than the third predetermined threshold; and a number of active users is below a fourth predetermined threshold, wherein the first predetermined threshold relates to that there are several MU users demanding dense traffic. a number of users demanding dense traffic is above a first predetermined threshold; an average number of PRBs allocated to MU-MIMO users is below a second predetermined threshold; and a number of users with small package services is below a third predetermined threshold; OR wherein it is determined not to use MU-MIMO when one or more of following conditions are satisfied: a number of users demanding dense traffic is smaller than the first predetermined threshold; a number of users with small package services is greater than the third predetermined threshold; and a number of active users is below a fourth predetermined threshold, wherein the first predetermined threshold relates to that there are several MU users demanding dense traffic. a number of users demanding dense traffic is smaller than the first predetermined threshold; a number of users with small package services is greater than the third predetermined threshold; and a number of active users is below a fourth predetermined threshold, wherein the first predetermined threshold relates to that there are several MU users demanding dense traffic. <EOS>