There is provided a method for determining, by a network node, network access of a user equipment (UE). The method may include: receiving identity information of the UE from a base station to which the UE is connected; receiving capability information of the UE from the base station, the capability information of the UE including multiple-input and multiple-output (MIMO) layer information of the UE; and determining whether to allow network access of the UE on the basis of the identity information and the MIMO layer information.