Apparatuses, methods, and systems for dynamically controlling a local buffer of a modem of a wireless device are disclosed. One method includes receiving and queuing transmission packets in the local buffer of the modem of the wireless device for wireless transmission to a receiving device, purging each transmission packet from the local buffer after receiving an acknowledgement of reception of the transmission packet from the receiving device, and requesting acknowledgement from the receiving device when a queue of the transmission packets within the local buffer exceeds a threshold level, wherein the receiving device aggregates acknowledgment responses to a plurality of unpurged transmission packets in the local buffer and transmits an aggregated acknowledgment to the modem.