An Zhiping,Zhang Deyun,Zhao Dongping,Gao Lei
(School of Electronics and Information Engineering,Xi'an Jiaotong University,Xi'an 710049,China)
Abstract:Focusing on the problem that the random early detection£¨RED£©may drop packets from the same data flow packets continuously,an active queue management algorithm which is applicable for the real time muiltimedia service is proposed.The algorithm drops the arriving packets with certain probability when the congestion has not been occurred yet.In dropping packets,the recent situation of packets dropped is judged according to instantaneous loss rate.It endeavors to avoid dropping packets from the date flow continuously to ensure the QoS of the multimedia applications if the recent dropping packets rate is high.When network is congested,all packets of the part of flows are dropped to avoid most of application being interrupted due to packet loss.The experiments indicate that the proposed algorithm provides better QoS in realª²time multimedia service, whether the network is congested or not£®
Keywords:active queue management;random early detection;congestion;quality of service