The paper presents an active queue management technique of preventing congestion in packet-switch networks called Random Early Detection (RED) gateways. RED is based on the observation that congestion can most accurately be understood at the gateway, since it can distinguish high propagation delay from high delay brought on by increasing queue lengths. Therefore, they suggest that congestion de...

A TCP/RED (Transmission Control Protocol/Random Early Detection) system with multiplebottleneck links could be unstable even if its system parameters are set the same as those in a stable single-bottleneck system [D. Bauso, L. Giarre, G. Neglia, Active queue management stability in multiple bottleneck networks, IEEE ICC’04, vol. 4, June 2004, pp. 2267– 2271]. In this paper, we study the stabili...

Shahram Jamali1, Neda Alipasandi2,*, and Bita Alipasandi3 1Computer Engineering Department, University of Mohaghegh Ardabili, Ardabil, Iran 2Sama technical and vocational training college, Islamic Azad University, Ardabil Branch, Ardabil, Iran 3Young Researchers and Elite Club, Ardabil Branch, Islamic Azad University, Ardabil, Iran *Corresponding Author’ Information: Tel.: +98-45-33361902, E-ma...

This paper presents a summary of our work on developing an architecture for transporting real-time traffic (MPEG4 video in this paper) in IP networks that provide service differentiation. We target our architecture at Assured Forwarding (AF) style services. This architecture assumes loss differentiation in the network and the network’s ability to provide ECN messages to the sender. We did not c...

In this work we introduce the concept of Random Early Detection (RED) to a medium access control (MAC) protocol applicable to the W-CDMA UMTS access interface. The concept is in general applicable to MAC protocols that use channel load information to regulate the access to a CDMA channel. By making the analogy of a CDMA channel as if it was a queuing system of certain capacity, RED prevents the...

In order to achieve high throughput and low average delay in computer network, it is necessary to stabilize the queue length and avoid oscillation or chaos phenomenon. In this paper, based on Adaptive Random Early Detection ARED , an improved algorithm is proposed, which dynamically changes the range of maximum drop probability pmax according to different network scenarios and adjusts pmax to l...

|Multimedia ows are inherently inhomogenous, i.e. packets within a ow are of di erent importance for actual user perception. When transmitting such ows with real-time constraints in networks like the Internet which o er no reliability of transmission, some packet loss is inevitable. The perceptual impact of these losses is then ampli ed by the arbitrary distribution of packet losses within the ...

The main objective of this research is to analyze the bifurcation phenomenon in Internet congestion model for Transmission Control Protocol (TCP) with Random Early Detection (RED). This problem can be divided to many categories considering different viewpoints. Different approaches of modeling (continuous and discrete models) and various system structures (control in end node or routers) are so...

There are many factors, which are important in the evolution of wines during aging in bottle. Whilst it is accepted that the interaction of limited amounts of oxygen with bottled wine (via closure ingress) will not benefit white wine, it is widely held that limited amounts of oxygen will benefit robust red wines. As consumer acceptance continues of many different forms of wine bottle closures, ...

background colorectal cancer (crc) is the third most common cancer in iran and its early detection is necessary. this study is based on perception of people in the east of iran toward crc screening.   methods in a cross-sectional study, 1060 randomly selected individuals who referred to razavi hospital of mashhad, iran, between september the 1st, 2012 and february the 28th, 2013 as patients or ...