The disclosure proposes a method of delivering data applicable to a base station and a base station using the same method. According to one of the exemplary embodiments, the method of delivering data would include not limited to: receiving a service request for an uplink transmission; determining, locally, a quality of service (QoS) parameter, in response to receiving the service request for the uplink transmission; establishing a radio bearer by applying the QoS parameter; receiving a data of the uplink transmission via the radio bearer; buffering the data of the uplink transmission; and transmitting the data.