A data communication system able to provide a speedy response to a user equipment transmitting data includes a base station and a data center. The base station is disposed adjacent to the data center, the base station is coupled between the data center and the user equipment, and the base station transmits data provided by the user equipment to the data center. The data center processes first data from the user equipment, and transmits a second data to the user equipment through the base station. Therefore, the data transmission time between the data center and the user equipment is shortened, and the data can be quickly fed back to the user equipment.