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- Addressing Heterogeneity, Scalability, and Privacy in Layered Multicast Congestion Control
- Multicast is attracting a resurgence of interest because it has a potential to address the explosively growing need for efficient streaming of large-volume Internet content. However, to realize the potential, large-scale multicast distribution requires effective congestion control. This paper designs SIM, a protocol that combines three distinct mechanisms (Selective participation,...
- Tags: SIM Card, Congestion Control, Scalability, Privacy, Layered Technologies Inc.
- White papers 2008-05-15
- Adaptive Video Streaming: Pre-Encoded MPEG-4 With Bandwidth Scaling
- The increasing popularity of streaming video is a cause for concern for the stability of the Internet because most streaming video content is currently delivered via UDP, without any end-to-end congestion control. Since the Internet relies on end systems implementing transmit rate regulation, there has recently been significant interest in...
- Tags: Congestion Control, Bandwidth, Streaming Video, Video, Web Site Development, Digital Video, Web Technology, Corporate Communications, Internet, Personal Technology, Marketing
- White papers 2008-01-01
- Parameter Tuning of Rate-Based Congestion Control Algorithms and Its Application to TCP Over ABR
- In this paper, the rate-based congestion control algorithm that has been standardized in the ATM Forum is evaluated. Its behavior is analyzed by utilizing a first-order fluid approximation to provide control parameter tuning. This paper obtains the maximum queue length at the switch and conditions for avoiding under-utilization. The results...
- Tags: Algorithm, Congestion Control, TCP, Osaka University, Tcp/Ip, Networking
- White papers 2007-11-16
- Implementation and Evaluation of Late Data Choice for TCP in Linux
- Real-time delivery of time-dependent data over the Internet is challenging. UDP has often been used to transport data in a timely manner, but its lack of congestion control is often criticized. This criticism is a reason that the vast majority of applications today use TCP. The downside of this is...
- Tags: Linux, Congestion Control, TCP, UDP, University Of Oslo, Tcp/Ip, Networking
- White papers 2007-09-11
- TCP Testing - Preventing Global Internet Warming
- Do the new TCP congestion control algorithms and other changes have unfairness that could lead to congestion collapse? Testing multiple flows using applications rsync and ftp shows some unfairness exists when the bottleneck queue is large; but the new algorithms are no more unfair than standard TCP. The Transmission Control...
- Tags: Ireland, Congestion Control, Internet, TCP, Tcp/Ip, Networking
- White papers 2007-09-01
- Estimation of RTT and Bandwidth for Congestion Control Applications in Communication Networks
- Heterogeneous communication networks with their variety of application demands, uncertain time-varying traffic load, and mixture of wired and wireless links pose several challenging problem in modeling and control. This paper focuses on the Round-Trip Time RTT, which is a particularly important variable for efficient end-to-end congestion control, and on bandwidth...
- Tags: Estimation, Algorithm, Congestion Control, Bandwidth, Network, RTT, Engineering, Networking
- White papers 2007-08-04
- TCP Congestion Control Over 3G Communication Systems: An Experimental Evaluation of New Reno, BIC and Westwood+
- One of TCP's key tasks is to react and avoid network congestion episodes which nor-mally arise in packet switched networks. A wide literature is available concerning the behaviour of congestion control algorithms in many different scenarios and several congestion control algorithms have been proposed in order to improve performances in...
- Tags: Congestion Control, 3G, TCP, Congestion Control Algorithm, Tcp/Ip, Networking
- White papers 2007-04-17
- Stackelberg Approach for Pricing Differentiated Services
- This paper considers both real-time traffic as well as data transfers sharing a common bottleneck link. The paper assumes that data transfer uses TCP congestion control protocol and that real-time traffic uses some TCP- friendly transport protocol that satisfies the same square-root formula for throughput. The performance measures are determined...
- Tags: Congestion Control, Computer Science, TCP, Pricing Strategy, Performance Measure, Tcp/Ip, Networking
- White papers 2007-03-28
- An Experimental Investigation of the Congestion Control Used by Skype VoIP
- The explosive growth of VoIP traffic poses a potential challenge to the stability of the Internet that, up to now, has been guaranteed by the TCP congestion control. This paper investigates how Skype behaves in the presence of time-varying available bandwidth in order to discover if some sort of congestion...
- Tags: Congestion Control, Bandwidth, VoIP, Skype Technologies S.A.
- White papers 2007-03-06
- Enhancing TCP Performance for Dedicated Clusters and Grids
- TCP congestion control methods seriously and unnecessarily harm performance of network transmissions when used in dedicated clusters and grids. This paper presents a simple method in which congestion control can be disabled under appropriate circumstances while still addressing fairness issues and avoiding congestion collapse. The paper discusses a Linux-based implementation...
- Tags: Congestion Control, TCP, Los Alamos National Laboratory, Tcp/Ip, Linux, Networking, Operating Systems, Software
- White papers 2007-02-05
- YeAH-TCP: Yet Another Highspeed TCP
- Several new TCP congestion control algorithms have been proposed to improve TCP performance over very fast, long-distance networks. High bandwidth delay products require more aggressive window adaptation rules, yet maintaining the ability of controlling router buffer congestion. This paper defines a relatively simple experimental scenario to compare most current high...
- Tags: Congestion Control, TCP, Tcp/Ip, Networking
- White papers 2007-01-25
- Improving TCP Friendly Rate Control Behaviour in DVB Satellite Networks
- This paper envision in the not so distant future an Internet where the biggest share of bandwidth is used by streaming applications, without any hard reservations in the network core. Such a traffic distribution calls for a robust end-to-end congestion control mechanism, eventually forced by access networks, so that the...
- Tags: Congestion Control, TCP, Satellite, Digital Video Broadcasting, University Of Aberdeen, Tcp/Ip, Networking
- White papers 2007-01-24
- Linux Beats Windows! - Or the Worrying Evolution of TCP in Common Operating Systems
- For a long time, operating system designers have followed the recommendation of the IETF for TCP congestion control. Lately, this has changed: the Linux kernel uses BIC-TCP by default since June 2004, and Compound TCP is going to be a part of Microsoft Windows Vista, where it is likely to...
- Tags: Congestion Control, Operating System, Internet Engineering Task Force, TCP, University Of Innsbruck, Tcp/Ip, Linux, Operating Systems, Microsoft Windows, Networking, Software
- White papers 2007-01-22
- TCP-Fusion: A Hybrid Congestion Control Algorithm for High-Speed Networks
- This paper presents a new congestion control algorithm of TCP, called TCP-Fusion, and provides its extensive evaluation results through simulations and implementations. Recently, towards high-speed networks with large bandwidth delay product, a number of different approaches have been proposed to improve TCP performance. However, their potential unfriendliness to TCP-Reno encumbers...
- Tags: Algorithm, Congestion Control, TCP, Tcp/Ip, Networking
- White papers 2007-01-22
- Multipath Routing, Congestion Control and Dynamic Load Balancing
- Combining transport-layer congestion control with multi-path routing is a cross-layer approach that provides performance benefits over treating the layers separately. This is phrase as an optimisation problem, examine the case of data transfers, and show how a coordinated controller gives strictly better performance than an uncoordinated controller, which sets up...
- Tags: Congestion Control, Load Balancing, Performance Management, Network Technology, Human Resources, Workforce Management, Networking
- White papers 2007-01-22
- A Burstiness Control for High Speed Long Distance TCP
- Gigabit networks are rapidly being deployed. This has stimulated intensive research on improving TCP congestion control algorithm in order to sustain large congestion window and high throughput. Most of these works however focus almost exclusively on window control algorithm that controls the network behavior at the round-trip time scale. This...
- Tags: Algorithm, Congestion Control, California Institute Of Technology, TCP, Gigabit Network, Tcp/Ip, Engineering, Networking
- White papers 2007-01-01
- TCP Nice: A Mechanism for Background Transfers
- This paper presents an end-to-end congestion control algorithm optimized to support background transfers. Surprisingly, an end-to-end protocol can nearly approximate the ideal router-prioritization strategy by almost eliminating interference with demand flows and reaping significant fractions of available spare network bandwidth. The Internet experiments suggest that there is a significant amount...
- Tags: Congestion Control, University Of Texas, TCP, Internet, Tcp/Ip, Networking
- White papers 2007-01-01
- SCTP and TCP Variants: Congestion Control Under Multiple Losses
- Inefficiency in the current specification of SCTP's congestion control is characterized, which degrades performance when there are multiple packet losses in a single window. An SCTP variant, called New-Reno SCTP is presented, which introduces three modifications. First, a Fast Recovery mechanism, similar to that of New-Reno TCP, is included to...
- Tags: Congestion Control, Window, TCP, University Of Delaware, Construction, Tcp/Ip, Networking
- White papers 2007-01-01
- Generalized Window Advertising for TCP Congestion Control
- Congestion in the Internet is a major cause of network performance degradation. The Generalized Window Advertising GWA scheme proposed in this paper is a new approach for enhancing the congestion control properties of TCP. GWA requires only minor modifications to the existing protocol stack and is completely backward compatible, allowing...
- Tags: Congestion Control, Network, Window, TCP, Generalized Window Advertising, Tcp/Ip, Networking
- White papers 2007-01-01
- MTCP: Scalable TCP-Like Congestion Control for Reliable Multicast
- The paper presents MTCP, a congestion control scheme for large-scale reliable multicast. Congestion control for reliable multicast is important, because of its wide applications in multimedia and collaborative computing, yet nontrivial, because of the potentially large number of receivers involved. Many schemes have been proposed to handle the recovery of...
- Tags: Congestion Control, Multicast, TCP
- White papers 2007-01-01
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