Abstract: A bandwidth control method is provided. A router is provided to establish a network connection to a remote apparatus. The remote apparatus is allocated with a downlink bandwidth for servicing the gateway. A plurality of downlink packets are received by the gateway. In response to reception of the downlink packets, the gateway transmits a plurality of uplink packets to the remote apparatus to allow the remote apparatus to transmit more downlink packets to the gateway after the remote apparatus acknowledges reception of the uplink packets. A transmission rate of the uplink packets is limited within an uplink threshold by the gateway so that a transmission rate of the downlink packets is smaller than the downlink bandwidth allocated to the remote apparatus. The uplink threshold is determined based on the downlink bandwidth.