Generally speaking, WRR is suitable for the network whose packet size is of a fixed length, and DRR is an improved version that can handle packets of variant lengths. In fact, due to its simple...

Generally speaking, WRR is suitable for the network whose packet size is of a fixed length, and DRR is an improved version that can handle packets of variant lengths. In fact, due to its simple implementation, DRR is more popular, but it cannot guarantee a small worst-case delay. Study their abilities about the worst-case delay guarantee. Is it possible to improve DRR to provide a smaller worst-case delay than WRR?