Random early detection (RED) is expected to eliminate global synchronization by random active packet drop. Its packet drop probability is decided by the maximum packet drop probability in its drop function, buffer thresholds, and average queue length. It has been observed that for a large number of connections, a small value of the maximum packet drop probability may not eliminate global synchr...

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...

We use a discrete-time dynamical feedback system model of TCP/RED to study the performance of Random Early Detection RED for different values of control parameters. Our analysis shows that the queue length is able to keep stable at a given target if the maximum probability pmax and exponential averaging weight w satisfy some conditions. From the mathematical analysis, a new self-tuning RED is p...

This paper compares the performance of Tail Drop and three different flavors of the RED (Random Early Detection) queue management mechanism: RED with a standard parameter setting, RED with an optimized parameter setting based on a model of RED with TCP flows, and finally a version of RED with a smoother drop function called “gentle RED”. Performance is evaluated under various load situations fo...

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...

We consider the adaptation of random early detection (RED) as an active queue management algorithm for multimedia traffic in wireless networks. We studied features of RED, multimedia data and point out a weakness in both. We show that an appropriate RED algorithm can improve multimedia data performance.

An analytical framework for multiple TCP flows sharing a bottleneck link under the Random Early Detection (RED) regime is developed. Closed form expressions for the steady state throughput and average queueing delay are derived and verified by simulations; these show that RED significantly improves the inherent TCP bias against links with higher round-trip delays as compared to Tail Drop, contr...

Multimedia applications that transmit long continuous streams of data across the Internet will continue to stress networking technologies for the years to come. To help improve the performance of congestion avoidance protocols like TCP and to punish non-adaptive UDP-based applications, the IETF is considering the widespread deployment of Random Early Detection (RED) queue management. In this pa...

Random Early Detection (RED) [1] is an active queue management strategy that has been deployed extensively in routers. However, its effectiveness has been limited owing to the difficulty in tuning its parameters under different network conditions. In this paper, we define the notion of an operating point that an Active Queue Management (AQM) policy should target. We suggest that the RED paramet...