Fuel injection control apparatus for direct injection type internal combustion engine controls timing of end of fuel injection so as to be capable of controlling fuel injection volume precisely without raising fuel pressure. A UE subsystem of the mobile relay determines if any UEs are experiencing low UL QoS based on the number of UL QoS requests and the served-to-requested ratio. In order to provide precompensation, the precompensation circuit is operated at bias level to provide gain expansion and phase compression to cancel out the gain compression and phase expansion of the downstream Doherty amplifier to provide a higher overall linear power added efficiency. Additionally, each priority level may be associated with a predetermined threshold level.