A terminal, as disclosed, includes a receiver that receives a channel state information reference signal (CSI-RS) in a downlink; and a controller that determines, in a higher layer measurement based on the CSI-RS, that a delay time based on at least one of a number of samples used in the measurement or a scaling factor indicating an overlap between a resource for the CSI-RS and a measurement gap is included in a measurement time. If the resource for the CSI-RS partially overlaps a periodicity of the measurement gap, the controller determines that the scaling factor indicating the overlap between the resource for the CSI-RS and the measurement gap is a value based on a periodicity of the resource for the CSI-RS and the periodicity of the measurement gap. In other aspects, a base station, a communication method, and a communication system are also disclosed.