A method implemented in a network for enhancing transmission is disclosed. The network contains a number of network devices, and at least one network device provides traffic scheduling function to schedule transmission of packets. The method starts with arrival of a packet. In response to arrival of the packet, the network device determines whether a timer has expired, whether a congestion level has reached a congestion threshold, whether the packet is a high priority packet, and whether a burst accumulation counter has reached an accumulation threshold. The packet is transmitted, along with any packet waiting for transmission, in response to at least one of the conditions are satisfied: the timer has expired, the congestion level has reached the congestion threshold, the packet is a high priority packet, and the burst accumulation counter has reached the accumulation threshold.