Apparatus and method for controlling transmission of vehicle

An apparatus of controlling a transmission of a vehicle, the apparatus including:

• a determination device configured to determine when a curve is present within a predetermined distance ahead of the vehicle, based on information regarding a road ahead of the vehicle;
• a calculation device configured to determine a predicted lateral acceleration of the vehicle based on information regarding the curve and information regarding a state of the vehicle and to determine a pattern correction coefficient based on the predicted lateral acceleration determined;
• a pattern correction device configured to correct a predetermined gear-shift pattern based on the pattern correction coefficient;
• and
• a controller configured to control the transmission based on the corrected gear-shift pattern upon determining that the vehicle enters the curve.