Active queue management schemes like RED (Random Early Detection) have been suggested when multiple TCP sessions are multiplexed through a bottleneck buffer. The idea is to detect congestion before the buffer overflows and packets are lost. When the queue length reaches a certain threshold RED schemes drop/mark incoming packets with a probability that increases as the queue size increases. The ...

Active queue management policies and in particular Random Early Drop (RED) are being pushed as additional mechanisms in Internet routers to control congestion and keep network utilization high. RED’s performance is highly dependent on the settings of its control parameters. However, no firm guidelines exist on configuring RED parameters and the current suggestions fail to provide the desired pe...

Active queue management policies and in particular Random Early Detection (RED) are being advocated by the Internet Engineering Task Force (IETF) as additional mechanisms in Internet routers to control congestion and keep network utilization high. RED's performance is highly dependent on the settings of its ve control parameters. However, no rm guidelines exist on connguring RED parameters and ...

In this paper, we study the tail behavior of the stationary queue length of an M/G/1 retrial queue. We show that the subexponential tail of the stationary queue length of an M/G/1 retrial queue is determined by that of the corresponding M/G/1 queue, and hence the stationary queue length in an M/G/1 retrial queue is subexponential if the stationary queue length in the corresponding M/G/1 queue i...

In this study, we developed an adaptive signal control (ASC) framework for connected vehicles (CVs) using agent-based modeling technique. The proposed framework consists of two types of agents: 1) vehicle agents (VAs); and 2) signal controller agents (SCAs) including signal head sub-agent (SH-SA), information processing sub-agent (IP-SA), transition feasibility management sub-agent (TFM-SA) and...

This paper studies virtual machine (VM) scheduling in a queueing cloud computing system with stochastical arrivals of heterogeneous jobs by considering jobs’ delay requirements. The delay-optimal VM such is formulated as multi-resource multi-class problem minimize the average job completion time, which often NP-hard. To solve problem, we first propose model that buffers same type one que...

in order to make the best utilization of a link in computer networks, active queue management (aqm) algorithms are generally used in a variety of methods. in this paper, a systematic control strategy based on self-scheduled h ∞, considering the dynamics of the window-based tcp flow, is proposed. then, the robustness of the designed controller to disturbance and parameter fluctuations of the pla...

Many real-time applications use Internet as a media to transmit their data and need guarantee for correct data transmission and limited transmission delay. It requires efficient network traffic protocols to avoid or limit the level of congestion. In this paper we propose, design and analyze a Robust Delay Based Controller (RDBC) for traffic management on transmission control protocol (TCP). Thi...

In this paper, we present an analytical TCP model that takes into account of several issues that were ignored in the other existing models (such as those in [15], [19]), i.e., (i) the congestion window is not gradually decreased at the rate of w 2p 2 , but suddenly halved upon receipt of congestion indication and (ii) the congestion window is halved at most once during one roundtrip time (RTT)....