Research on Queue Scheduling Algorithm Modeling and Analysis

With the development of network technology and the wide use of the Internet, QoS has attracted wide attention. Queue scheduling algorithm of Router is an important core technology of the network resource management for QoS. Through controlling usage of the link bandwidth of the different type groups, the different traffics have the different levels of service. Based on the analysis and modeling of FIFO, PQ, and WFQ scheduling algorithms, the simulation experiment simulate three different priority video conferencing traffic, and apply FIFO, PQ, and WFQ scheduling algorithms on the bottleneck link. The simulation results compare network delay of FIFO, PQ, and WFQ scheduling algorithms, and describe the various queue scheduling algorithm characteristics.