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Pub. No.:    WO/2017/154486    International Application No.:    PCT/JP2017/005450
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Thu Feb 16 00:59:59 CET 2017
IPC: H04W 36/14
H04W 36/04
H04W 36/30
H04W 36/38
Applicants: NTT DOCOMO, INC.
Inventors: MORIHIRO, Yoshifumi
森広 芳文
ASAI, Takahiro
浅井 孝浩
The present invention provides a communication device of a wireless communication system in which a plurality of cells having different bands are overlaid, and which comprises the communication device and a user equipment, wherein the communication device includes: an acquiring unit which acquires a communication quality of the user equipment in a first cell which is serving the user equipment; a determining unit which, on the basis of the communication quality of the user equipment, determines whether to switch to a second cell overlaid on the first cell; and an instructing unit which, if it has been determined to switch to the second cell overlaid on the first cell, instructs the user equipment to switch to the second cell.