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network congestion (3 results)
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- Congestion Control in Linux TCP
- The TCP protocol is used by the majority of the network applications on the Internet. 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. Because the freely available Linux operating system has gained popularity...
- White papers
- Recognizing and Resolving Congestion on the Network
- For eight years, Layton Construction had experienced problems with congestion on its network. The company has two T1 lines dedicated to Internet connectivity. Lately, the problem had become severe to the point that the IT staff was fired and was brought on as IT Director to find and resolve the...
- Case studies
- COCOON: An Alternative Approach to End-Point Congestion Management
- This paper proposes an alternate endpoint congestion management scheme, called COordinated COngestion cONtrol COCOON. The basic idea is to identify and group connections that may traverse the same backbone link, to enable them to share congestion information, and to coordinate among them all the congestion avoidance/control activities. The size of...
- White papers
- New SmartParking Solution Solves Auto Congestion and Land Use Issues
- San Francisco transportation authorities wondered if better commuter parking information could result in fewer cars, less congestion and better use of Transit and Park and Ride parking spaces. With the expertise of ACME Innovation, a Microsoft Gold partner, and its ParkingCarma service, a traffic transformation is under way. With the...
- Case studies
- Hop-by-Hop Congestion Control Over a Wireless Multi-Hop Network
- This paper focuses on congestion control over multihop, wireless networks. In a wireless network, an important constraint that arises is that due to the MAC Media Access Control layer. Many wireless MACs use a time-division strategy for channel access, where, at any point in space, the physical channel can be...
- White papers
- Edinburgh Leads the Way With Its RFID Bus Priority System to Help Reduce Congestion and Speed Up Traffic
- Edinburgh is in the forefront of technology that automatically gives buses the green light, reduces traffic congestion and encourages use of public transport. TIRIS Radio Frequency IDentification RFID technology from Texas Instruments is being used in Edinburgh in the latest traffic-light priority system aimed at easing traffic congestion and reduction...
- Case studies
- Combining Source- and Localized Recovery to Achieve Reliable Multicast in Multi-Hop Ad Hoc Networks
- This paper proposes a novel reliable multicast transport protocol for Multi-hop, wireless Ad hoc NETworks or MANETs. To recover from the different types of losses that may occur in MANETs, the Reliable Adaptive Congestion-controlled Transport protocol, or ReACT, combines source-based congestion- and error control with receiver-initiated localized recovery. While the...
- White papers
- Simplifying Virtualization Through Adaptive Networking Technology
- As IT organizations increasingly deploy virtual servers and storage to consolidate resources and improve utilization, they must be able to dynamically provision applications on virtual servers and move them non-disruptively as workloads change. However, this increased mobility of application workloads can sometimes create unpredictable congestion in the networks connecting server-to-storage...
- 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...
- 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...
- White papers 2007-09-11
- TCP MaxNet - Implementation and Experiments on the WAN in Lab
- This paper describes implementation and performance of TCP MaxNet, a new protocol which uses a multi-bit explicit signaling approach to congestion control. The MaxNet sender algorithm operates by adjusting its congestion window in response to explicit feedback from the most congested link encountered in the network. This scheme has numerous...
- White papers 2007-09-07
- 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...
- 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...
- White papers 2007-08-04
- TCP-ROME: Performance and Fairness in Parallel Downloads for Web and Real Time Multimedia Streaming Applications
- Parallel download protocols that establish multiple TCP connections to distributed replica servers have the potential to reduce file download time and to improve the quality of realtime multimedia downloads. Unfortunately, parallel download protocols are also inherently unfair towards single-flow downloads. This paper presents TCP-ROME, a parallel download protocol that allows...
- White papers 2007-07-05
- Austin_Traffic_Cams (widget)
- Austin_Traffic_Cams allows users to see traffic congestion of several highways and major streets in Austin, TX. This version is the first release on CNET Download.com.
- Software downloads 2007-06-01
- 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...
- White papers 2007-04-17
- 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...
- White papers 2007-03-06
- Modeling Scalable TCP Friendliness to NewReno TCP
- Scalable TCP is a simple change to the traditional TCP congestion control algorithm which dramatically improves TCP performance in high speed wide area networks. The focus of this contribution is to model the performance of Scalable TCP algorithm sharing bottleneck link with a NewReno TCP. The analysis is performed during...
- White papers 2007-03-01
- 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...
- 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...
- White papers 2007-01-25
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