A communication method in a mobile communication system in which an access terminal transmits to an access network DRC information indicating a selected one of forward data rates requested by the access terminal is provided. A bit line groove having opposing sidewalls is defined between sidewalls of adjacent ones of the plurality of channel structures. At least one of frequency, amplitude and phase of banding, which is inherent in a printing device, is determined based on the sensed test target. When Q1 and Q2 are both hydrogen atoms and when Q3 and Q4 are both formula, then p must not be. As a result, an overdrive pulse is not generated at a refresh mode to remove an overdriving period, thereby reducing current consumption at a refresh mode.