A communication apparatus in a wireless communication system in which a plurality of cells with different bands are overlaid and which includes the communication apparatus and a user equipment, the communication apparatus comprising: an acquisition unit configured to acquire communication quality of the user equipment in a first cell in which the user equipment resides; a determination unit configured to determine whether to perform switching to a second cell overlaid with the first cell based on the communication quality of the user equipment; and an instruction unit configured to instruct the user equipment to perform the switching to the second cell when the switching to the second cell overlaid with the first cell is determined, characterized by further comprising: a storage unit configured to store history information in which downlink reception quality measured in a switching source cell among the plurality of cells is associated with communication quality in a switching destination cell, wherein the acquisition unit is configured to acquire the downlink reception quality in the first cell as the communication quality of the user equipment, and wherein the determination unit is configured to extract candidates of the switching destination cell by comparing the downlink reception quality acquired by the acquisition unit in the first cell to the history information and to select the second cell to which the user equipment is to be switched from the extracted candidates of the switching destination cell. an acquisition unit configured to acquire communication quality of the user equipment in a first cell in which the user equipment resides; a determination unit configured to determine whether to perform switching to a second cell overlaid with the first cell based on the communication quality of the user equipment; and an instruction unit configured to instruct the user equipment to perform the switching to the second cell when the switching to the second cell overlaid with the first cell is determined, characterized by further comprising: a storage unit configured to store history information in which downlink reception quality measured in a switching source cell among the plurality of cells is associated with communication quality in a switching destination cell, wherein the acquisition unit is configured to acquire the downlink reception quality in the first cell as the communication quality of the user equipment, and wherein the determination unit is configured to extract candidates of the switching destination cell by comparing the downlink reception quality acquired by the acquisition unit in the first cell to the history information and to select the second cell to which the user equipment is to be switched from the extracted candidates of the switching destination cell. a storage unit configured to store history information in which downlink reception quality measured in a switching source cell among the plurality of cells is associated with communication quality in a switching destination cell, wherein the acquisition unit is configured to acquire the downlink reception quality in the first cell as the communication quality of the user equipment, and wherein the determination unit is configured to extract candidates of the switching destination cell by comparing the downlink reception quality acquired by the acquisition unit in the first cell to the history information and to select the second cell to which the user equipment is to be switched from the extracted candidates of the switching destination cell. <EOS>