A communication control method in a mobile communication system, comprises: a step A of transmitting information from a base station having at least one cell to a neighboring base station, the information notifying that a particular cell of the base station is to be prevented from being selected as a measurement target for mobility control of a user terminal under control of the neighboring base station; and a step B of, when receiving the information from the base station at the step A, performing control by the neighboring base station based on the received information such that the user terminal under control of the neighboring base station avoids selecting the particular cell as the measurement target.