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Random Early Detection (RED) is recommended as the congestion avoidance mechanism in packet switched networks in RFC2309 and has become the focus of much research into congestion control. Furthermore, RED and WRED are the AQM schemes most widely deployed in commercial Internet routers, such as Cisco and Juniper routers. This paper describes an analytical approach that models RED and WRED schemes using...
This paper presents a comprehensive analytical approach to maintain queuing delay in a router at a required level through closed-loop feedback control under aggregated traffic flows from various traffic classes. The approach is able to bound average queuing delay but still achieve a high system utilization by regulating traffic arrival rate implicitly through a movable queuing threshold. The queuing...
This paper presents a comprehensive system modeling and analysis approach for both predicting and controlling queuing delay at an expected value under multi-class traffic in a single buffer. This approach could effectively enhance QoS delivery for delay sensitive applications. Six major contributions are given in the paper: (1) a discrete-time analytical model is developed for capturing multi-class...
Delay is arguably one of the most vital Quality of Service (QoS) metrics in computer networks since it has many implications for real time multimedia applications. The congestion and queuing delay of Internet core routers is one of the most important fundamental research topics which plays a vital role in determination of the overall end-to-end delay. In previous works, the control algorithm proposed...
Internet traffic congestion control using queue thresholds is a well known and effective mechanism. This motivates the stochastic analysis of a discrete-time queueing systems for the performance evaluation of the active queue management (AQM) based congestion control mechanism called Random Early Detection (RED) with bursty and correlated traffic using a two-state Markov-Modulated Bernoulli arrival...
Employing effective buffer management schemes at Internet routers has been an increasing important issue in order to guarantee quality of service (QoS) to diverse Internet services. One of its primary goals is to control jitter and latency required by real-time and interactive traffic. Therefore, effectively constraining delay to a specified value is a key QoS requirement. This paper presents a new...
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