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tcp westwood

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TCP Westwood Performance Over Multiple Paths: Since its first introduction, TCP has been the major facility to transport best-effort traffic in the Internet. It has been enhanced repeatedly over 3 decades, and is now an integral part of every single computing facility. Internet is again on the move toward more reliable and robust network services. In...; Tags: Internet, TCP, TCP Westwood, Tcp/Ip, Networking; White papers 2007-01-01

Additional Resources

Analysis of TCP Westwood + in High Speed Networks: TCP Westwood+ is modelled and analyzed using stochastic recursive equations. It is shown that for links with Poisson losses and independent and varying delays, TCP Westwood converges to a stationary process with a finite average throughput. The resulting throughput is computed explicitly, and it is shown that it does not...; Tags: Network, TCP, Analysis, TCP Westwood+, Tcp/Ip, Networking; White papers 2006-01-20
TCP Westwood: Bandwidth Estimation for Enhanced Transport Over Wireless Links: TCP Westwood TCPW is a sender-side modification of the TCP congestion window algorithm that improves upon the performance of TCP Reno in wired as well as wireless networks. The improvement is most significant in wireless networks with lossy links, since TCP Westwood relies on end-to-end bandwidth estimation to discriminate the...; Tags: Improvement, TCP, Wireless, Tcp/Ip, Networking; White papers 2007-01-01
Inter-Protocol Fairness Between TCP New Reno and TCP Westwood+: This paper investigates the effect of introducing TCP Westwood+ on regular TCP New Reno. By means of analytical modeling and ns-2 simulations, the paper demonstrates that the two protocols get different shares of the available bandwidth in the network. The main result is that the bandwidth sharing between the two...; Tags: Bandwidth, TCP, Tcp/Ip, Networking; White papers 2007-03-20
TCP Westwood+ Enhancement in High-Speed Long-Distance Networks: In this paper, mechanisms to enhance the performance of TCP Westwood+ in the presence of a large Bandwidth-Delay Product are studied. In particular, the employment of a logarithmic function for congestion window increase in the absence of packet losses is proposed. Extensive numerical simulations, carried out by using ns-2, show...; Tags: University Of Trento, TCP, Tcp/Ip, Performance Management, Networking, Human Resources, Workforce Management; White papers 2007-01-01

Enhanced Westwood+ TCP for Wireless/Heterogeneous Networks: Westwood/Westwood+ TCP is well known by its effective AIAD Additive Increase and Adaptive Decrease bandwidth estimation algorithm. This paper proposes an enhanced Westwood+ scheme for wireless/heterogeneous networks with a high random bit error rate BER, in which the sender is introduced with the following three characteristics: to consider the impact...; Tags: Westwood/Westwood+ TCP, Tcp/Ip, Wi-Fi, Engineering, Wireless, Networking; White papers 2006-06-18
Mathematical Analysis of Westwood+ TCP Congestion Control: TCP congestion control is based on an Additive-Increase/Multiplicative-Decrease AIMD probing paradigm aimed at adapting the sending rate of TCP data sources to match the Internet time-varying available bandwidth. Westwood+ TCP has been recently proposed to improve the tracking of available bandwidth of classic TCP. It is based on an end-to-end...; Tags: Bandwidth, Congestion, TCP, Analysis, Westwood+ TCP, Tcp/Ip, Networking; White papers 2006-04-05
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: Algorithm, Literature, Congestion, 3G, TCP, Tcp/Ip, Engineering, Networking; White papers 2007-04-17
TCP-Adaptive Reno for Improving Efficiency-Friendliness Tradeoffs of TCP Congestion Control Algorithm: It has been recognized that TCP throughput deteriorates in networks with large bandwidth-delay-product and non-negligible packet losses. A number of protocols, such as High Speed TCP, Scalable TCP and TCP-Westwood have been proposed to address this problem. However, their lack of friendliness to existing protocols has hampered their wide deployment...; Tags: Algorithm, Network, Congestion, TCP, Tcp/Ip, Networking; White papers 2006-01-20
Modeling the AIADD Paradigm in Networks With Variable Delays: Modeling TCP is fundamental for understanding Internet behavior. The reason is that TCP is responsible for carrying a huge quota of the Internet traffic. During last decade many analytical models have attempted to capture dynamics and steady-state behavior of standard TCP congestion control algorithms. In particular, models proposed in literature...; Tags: Algorithm, Network, Computer Science, TCP, Modeling, Modeling TCP, Tcp/Ip, Research & Development, Internet, Engineering, Networking, Business Operations; White papers 2006-10-13
TCP in Mixed Internet and Geo-Satellite Environments: Experiences and Results: Experiments in real satellite testbeds are relatively rare in practice. This paper is going to share the experience on using one, and comment on selected sets of results that the authors have conducted in such mixed Internet and GEO-Satellite environment. The selected material includes: characterization of an induced error-prone satellite...; Tags: Internet, Performance, TCP, Satellite, Tcp/Ip, Network Technology, Networking; White papers 2006-01-14
Performance Evaluation of LogWestwood+ TCP in Wired/Wireless Networks: TCP is the most commonly used transport protocol on the Internet tuned to perform well in traditional networks made up of wired links with low bit error rates. Networks with higher bit error rates, such as those with wireless links, violate many of the assumptions made by TCP, causing degradation...; Tags: Performance, Environment, Performance Evaluation, TCP, Performance Management, Tcp/Ip, Team Management, Networking, Human Resources, Workforce Management, Management; White papers 2007-02-27
TCP Westwood Simulation Studies in Multiple-Path Cases: Best-effort traffic has been the dominant traffic type in the Internet, and TCP has been playing the major role for carrying such traffic. Internet is again moving toward more reliable and robust network services including QoS. Provisioning multiple paths as backup routes is one of the feasible solutions to designing...; Tags: Network, Traffic, TCP, Path, Tcp/Ip, Internet, Networking; White papers 2007-01-01
Understanding TCP Over TCP: Effects of TCP Tunneling on End-to-End Throughput and Latency: TCP tunnel is a technology that aggregates and transfers packets sent between end hosts as a single TCP connection. By using a TCP tunnel, the fairness among aggregated flows can be improved and several protocols can be transparently transmitted through a firewall. Currently, many applications such as SSH, VTun, and...; Tags: Latency, TCP, Tcp/Ip, Networking; White papers 2007-11-16
An Analysis of TCP Through Simulation: This paper is an analysis of TCP and its variations through the use of simulations. The NS-2 network simulator was used to help understand the behaviors and characteristics of TCP variants. Two different experiments were set forth. The first varied different load conditions; the second varied queuing algorithms. The TCP...; Tags: TCP, Analysis, Tcp/Ip, Networking; White papers 2006-10-28
Experimental Evaluation of TCP Protocols for High-Speed Networks: In this paper we present experimental results evaluating the performance of the Scalable-TCP, HS-TCP, BIC-TCP, FAST-TCP and H-TCP proposals in a series of benchmark tests. In summary, we find that both Scalable-TCP and FAST-TCP consistently exhibit substantial unfairness, even when competing flows share identical network path characteristics. Scalable-TCP, HS-TCP, FAST-TCP...; Tags: Ireland, Network, Flow, TCP, Convergence, Tcp/Ip, VOIP, Networking, Telecommunications; White papers 2006-08-31
A Uni?ed Framework for Modeling TCP-Vegas, TCP-SACK, and TCP-Reno: This paper presents a general analytical framework for the modeling and analysis of TCP variations. The framework allows the modeling of multiple variations of TCP, including TCP-Vegas, TCP-SACK, and TCP-Reno, under general network situations. In particular, the framework allows us to propose the first analytical model of TCP-Vegas for arbitrary...; Tags: TCP, Framework, Modeling, Tcp/Ip, Research & Development, Networking, Business Operations; White papers 2007-10-22
Augmented Split-TCP Over Wireless LANs: This paper introduces a new split-TCP approach for improving TCP performance over IEEE 802.11-based wireless LANs. TCP over wireless LANs is not aggressive, which is a fundamental reason for poor performance. This paper proposes augmented split-TCP (AS-TCP) to mitigate this problem. The scheme extends the split-connection approach that divides a...; Tags: WLAN, TCP, Tcp/Ip, LANs, Networking, Wireless LANs, Wireless; White papers 2006-02-20
The Effect of Reverse Traffic on the Performance of New TCP Congestion Control Algorithms: Several new TCP congestion control algorithms have been proposed to speed up the TCP over very fast networks. All these algorithms propose their own modifications of the increasing/decreasing phases of classic Reno/NewReno TCP. On the other hand, all of them preserve the self-clocking mechanism, which is a fundamental part of...; Tags: Algorithm, Performance, Congestion, TCP, Tcp/Ip, Networking; White papers 2007-01-01
Is Tampered-TCP Really Effective for Getting Higher Throughput in the Internet?: This paper examines the effectiveness of tampered-TCP whose congestion control mechanism has been modified by malicious users for higher than the normal TCP throughput. This paper focuses on a tampered-TCP in which the increase and decrease ratio of the congestion window size were changed during the congestion avoidance phase. The...; Tags: Throughput, Internet, Congestion, TCP, Tcp/Ip, Networking; White papers 2006-10-19

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