An inter-cell load balancing method of a first base station in a wireless communication system of a heterogeneous network, HetNet, including the first base station and a second base station, the method comprising: receiving, from a terminal, an indication of whether the terminal supports a neighbor cell interference removal function; configuring a first reserved region for the first base station and the second base station in case that the terminal does not support the neighbor cell interference removal function; configuring a second reserved region for the first base station and the second base station in case that the terminal supports the neighbor cell interference removal function; determining a state of the terminal located in the first reserved region or the second reserved region; determining whether a load balancing needs to be performed based on at least one of a condition as to whether an inter-cell interference control function is activated, a condition as to whether an inter-cell interference control partner cell exists, and an almost blank subframe, ABS, rate currently in use; determining whether to perform a handover of the terminal from the first base station to the second base station based on the state of the terminal and on the indication, in case that it is determined that the load balancing needs to be performed; performing the handover of the terminal based on the first reserved region, in case that the handover of the terminal is determined and the indication indicates that the terminal does not support the neighbor cell interference removal function; and performing the handover of the terminal based on the second reserved region, in case that the handover of the terminal is determined and the indication indicates that the terminal supports the neighbor cell interference removal function, wherein the first reserved region and the second reserved region are associated with a cell range extension, CRE, region and are capable of being served by the first base station and the second base station. receiving, from a terminal, an indication of whether the terminal supports a neighbor cell interference removal function; configuring a first reserved region for the first base station and the second base station in case that the terminal does not support the neighbor cell interference removal function; configuring a second reserved region for the first base station and the second base station in case that the terminal supports the neighbor cell interference removal function; determining a state of the terminal located in the first reserved region or the second reserved region; determining whether a load balancing needs to be performed based on at least one of a condition as to whether an inter-cell interference control function is activated, a condition as to whether an inter-cell interference control partner cell exists, and an almost blank subframe, ABS, rate currently in use; determining whether to perform a handover of the terminal from the first base station to the second base station based on the state of the terminal and on the indication, in case that it is determined that the load balancing needs to be performed; performing the handover of the terminal based on the first reserved region, in case that the handover of the terminal is determined and the indication indicates that the terminal does not support the neighbor cell interference removal function; and performing the handover of the terminal based on the second reserved region, in case that the handover of the terminal is determined and the indication indicates that the terminal supports the neighbor cell interference removal function, wherein the first reserved region and the second reserved region are associated with a cell range extension, CRE, region and are capable of being served by the first base station and the second base station. <EOS>