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Network Calculus Based Simulation for TCP Congestion Control: Theorems, Implementation, and Evaluation
White Papers By exploiting network calculus properties, the authors characterize how TCP congestion control - additive increase and multiplicative decrease (AIMD), together with the queue management strategy used in routers, regulates TCP flows.
[June 12, 2009, 3:07]
Recognizing and Resolving Congestion on the Network
White Papers For eight years, Layton Construction had experienced problems with congestion on its network. The IT Director deployed Network Composer which installed in minutes, automatically populating its database with information from every piece of equipment...
[June 20, 2007, 1:00]
Hop-by-Hop Congestion Control Over a Wireless Multi-Hop Network
White Papers This paper focuses on congestion control over multihop, wireless networks. This paper develops a fair hop-by-hop congestion control algorithm with the MAC constraint being imposed in the form of a channel access time constraint, using an...
[August 10, 2007, 11:17]
Memorial Sloan-Kettering Cancer Center Finds Cure for Network Congestion With High-Speed Outdoor Wireless Links From LightPointe
White Papers Memorial Sloan-Kettering Cancer Center (MSKCC) is dedicated to excellence in the prevention, treatment and cure of cancer through prevention, patient care, research and education. MSKCC's reliance on digital imaging, wireless technologies and...
[June 16, 2006, 0:00]
De-Randomizing Congestion Losses to Improve TCP Performance Over Wired-Wireless Network
White Papers Currently, a TCP sender considers all losses as congestion signals and reacts to them by throttling its sending rate. With Internet becoming more heterogeneous with more and more wireless error-prone links, a TCP connection may unduly throttle its...
[December 20, 2007, 0:01]
TCP Adaptive RTO to Improve TCP Performance in Mobile Ad Hoc Networks
White Papers TCP AR distinguishes routes failures from network congestion and adapts the RTO's value to network conditions. With the assumption that all packet losses are due to congestion, TCP performs poorly in such an environment.
[December 27, 2007, 0:01]
SACK TCP Resilience Improvement With OPNET
White Papers This can occur during network congestion as well as network failure. This paper documents a change to the OPNET version of SACK TCP that improves the protocol's resilience significantly, both during network congestion and for network failure.
[December 27, 2007, 0:01]
Highways Agency tech management criticised
News The Highways Agency has developed a new sophisticated computer network to deal with congestion across the UK but has failed to install the system to cover the UK's busiest motorways, according to official auditors.
[November 29, 2004, 15:30]
Explicit Congestion Notification (ECN) for TCP/IP
White Papers When routers become congested to the point in which their incoming packet buffers fill and they begin dropping packets, the effect on the network is reduced bandwidth, an impact on loss or time-sensitive traffic flows, and possibly link idle time...
[December 6, 2006, 0:00]
Modified TCP Congestion Control Algorithm for Throughput Enhancement in Wired-Cum-Wireless Networks
White Papers The key idea proposed in this paper is to determine the Optimal Congestion Window for a TCP Sender in a particular network scenario (that corresponds to the fair share of that connection) and keep this congestion window a constant to a point where...
[November 7, 2007, 0:00]
Congestion Control in Linux TCP
White Papers TCP performance is strongly influenced by its congestion control algorithms that limit the amount of transmitted traffic based on the estimated network capacity and utilization. The authors describe the fundamentals of the Linux TCP design...
[April 3, 2007, 1:00]
BT says no to traffic shaping
News Traffic shaping is a means of prioritising certain types of data over others to avoid network congestion. It is up to us at the core of the network to make sure there is enough bandwidth for [our services and those of our competitors]," said Beal...
[April 12, 2007, 17:52]
Congestion Control Mechanism of TCP for Achieving Predictable Throughput
White Papers It does not mean one can guarantee the throughput, while one can provide the throughput required by an upper-layer application at high probability when network congestion level is not so high. This paper proposes a congestion control mechanism of...
[December 21, 2007, 0:01]
Sender Side Intelligence for TCP Throughput Enhancement in Wired-Cum-Wireless Network
White Papers The key idea to determine the Optimal Congestion Window for a TCP Sender, in a particular network scenario (that corresponds to the fair share of that connection) and keep this congestion window a constant to a point where the fair share in the...
[October 31, 2007, 0:00]
The Impact of Burst Switching on TCP Performance
White Papers Even a single burst loss can affect TCP congestion control mechanism and many TCP sources then attempt to reduce down its send rate to avoid network congestion. In an OBS network, input traffic is aggregated to generate a big sized data burst at an...
[December 6, 2007, 0:01]
A TCP With Guaranteed Performance in Networks With Dynamic Congestion and Random Wireless Losses
White Papers First, the paper proposes a network comprising both dynamically varying congestion and random errors. Second, this model is extended with network calculus concepts in order to study bursty changes of congestion.
[December 27, 2007, 0:01]
UK shrugs off American broadband troubles
News According to the Wall Street Journal, the mass market rollout of broadband cable Internet access across the US has led to major problems with network congestion. Indeed, a Freeserve spokesman is confident that it will be able to avoid congestion...
[March 20, 2000, 8:42]
Congestion-Distortion Optimized Peer-to-Peer Video Streaming
White Papers In this work the paper focuses on limiting the congestion in a peer-to-peer network where multiple multicast trees are used to distribute video to a large set of receivers. The paper presents the idea of congestion-distortion optimized streaming...
[October 22, 2008, 1:01]
Government injects funds into transport IT
News Use of such technology could, for example, help drivers to avoid congestion and network managers to reduce it. Transport minister Rosie Winterton said: "We know we cannot simply build our way out of congestion.
[March 11, 2008, 13:20]
Broadband Speedtest
Downloads Factors such as network congestion and other downloads in progress can affect the available throughput. The results of the test can be affected by any network congestion between you and our servers. About the Speedtest
[December 5, 2009, 7:00]
