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TCP Westwood Experiments Over Large Bandwidth-Delay Product Networks
White Papers However, the nature of TCP Reno, the widely used transport layer protocol, leads to several drawbacks in photonics backbones with large Bandwidth Delay Product (BDP) characteristic. Furthermore, the congestion avoidance mechanism takes a long time...
[December 6, 2007, 23:00]
TCP-Based Video Streaming Using Receiver-Driven Bandwidth Sharing
White Papers Furthermore, the paper demonstrates scenarios in which a client using the bandwidth control system may actually obtain better performance than TCP-friendly UDP streaming protocols. This paper establishes the benefits of the proposed approach over...
[December 5, 2007, 23:00]
End-to-End Bandwidth Estimation In TCP To Improve Wireless Link Utilization
White Papers TCP Westwood (TCPW) is a sender-side only modification of TCP Reno congestion control that exploits an end-to-end bandwidth estimation mechanism to set the values of Slow-Start-Threshold and Congestion-Window after a congestion episode that is...
[December 6, 2007, 23:00]
Receiver-Driven Bandwidth Sharing For TCP And Its Application To Video Streaming
White Papers Standard TCP shares bottleneck link capacity according to connection round-trip time (RTT), and consequently may result in a bandwidth partition which does not necessarily coincide with the user's desires.
[December 5, 2007, 23:00]
Dealing With Sudden Bandwidth Changes In TCP
White Papers This paper proposes a novel technique to deal with sudden bandwidth changes in TCP. The current implementation of TCP is designed and optimized for stable networks, and does not adapt well upon sudden bandwidth changes.
[December 26, 2007, 23:00]
Core-Stateless Fair Bandwidth Allocation For TCP Flows
White Papers The standard end-to-end flow control implemented by the TCP protocol is ill-suited when it comes to achieving fair bandwidth allocation among competing TCP flows. Indeed, the lack of feedback from intermediate nodes does not allow a TCP source to...
[December 4, 2007, 23:00]
Providing Soft Bandwidth Guarantees Using Elastic TCP-Based Tunnels
White Papers This paper presents a novel approach that enables two edge/border routers - which the paper calls Internet Traffic Managers (ITM) - to use an adaptive number of TCP connections to set up a tunnel of desirable bandwidth between them.
[October 20, 2007, 0:00]
Modeling The Impact Of Delay Spikes On TCP Performance On A Low Bandwidth GPRS Wireless Link
White Papers The goodput of a single TCP source is modelled on a low bandwidth lossless GPRS link experiencing sudden increases in RTT, i.e.delay spikes. Renewal reward theory is used to derive a straightforward expression for TCP goodput that depends on the...
[November 21, 2005, 23:00]
Jointly Coordinating ECN And TCP For Rapid Adaptation To Varying Bandwidth
White Papers The introduction of service differentiation in the Internet implies that the residual bandwidth available to best-effort traffic becomes highly variable. Simulations indicate that the ECN-mod protocol is better than ECN-NewReno in exploiting rapid...
[January 14, 2008, 23:00]
TCP-Vegas Slow Start Performance In Large Bandwidth Delay Network
White Papers With the rapid expansion of the Internet, it has become possible for end hosts that are separated long apart to be connected through high bandwidth links. This environment, called a Large Bandwidth Delay Network, poses a major challenge to the...
[December 20, 2007, 23:00]
Performance Of TCP On Low-Bandwidth Wireless Links With Delay Spikes
White Papers This paper models the goodput of a single TCP source on a wireless link experiencing sudden increases in RTT, i.e.delay spikes. Such spikes trigger spurious timeouts that reduce the TCP goodput. Renewal reward theory is used to derive a...
[December 26, 2007, 23:00]
CLAMP: Maximizing The Performance Of TCP Over Low Bandwidth Variable Rate Access Links
White Papers This paper presents CLAMP, a distributed algorithm to enhance the performance of TCP connections that terminate in a wireless access network. CLAMP works at a receiver to control a TCP sender by setting the TCP receiver's advertised window limit.
[October 30, 2007, 23:00]
Enhancing TCP Congestion Control Via Connection Bandwidth Estimation, A Performance Study
White Papers This paper presents performance studies of TCP Westwood (TCPW), a sender-side modification of the congestion window control scheme in TCP. TCP Westwood relies on end-to-end rate estimation. The key innovative idea is to continuously measure at the...
[December 4, 2007, 23:00]
Inline Path Characteristic Estimation To Improve TCP Performance In High Bandwidth-Delay Networks
White Papers This paper presents a measurement study of TCPW BBE (Bandwidth and Buffer Estimations) and associated path characteristics estimation techniques over large pipes. The results show that TCPW BBE alone is more efficient than Reno in that it provides...
[December 26, 2007, 23:00]
Impact Of Drop Synchronisation On TCP Fairness In High Bandwidth-Delay Product Networks
White Papers This paper considers the performance of several well known high speed protocols in environments where individual flows experience different probabilities of seeing a drop in drop-tail buffers. The initial results suggest the properties of networks...
[December 26, 2007, 23:00]
Blocking TCP Requests On An Ethernet Network For Bandwidth Control
White Papers Network administrators and higher level people have always been curious to know how their network resources are utilized. There are companies that want their professionals to use the Internet to increase their productivity, and these companies look...
[April 28, 2006, 0:00]
Receiver-Driven Bandwidth Sharing For TCP
White Papers Standard TCP shares bottleneck link capacity according to connection round-trip time (RTT), and may result in a bandwidth partition which does not necessarily coincide with the user's desires. The paper presents a receiver based control system for...
[December 5, 2007, 23:00]
Mathematical Analysis Of Westwood+ TCP Congestion Control
White Papers 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.
[December 20, 2007, 23:00]
Modeling The Effect Of Short-Term Rate Variations On TCP-Friendly Congestion Control Behavior
White Papers To maintain stability of the Internet, flows other than TCP must be "friendly" to TCP flows, or share network bandwidth fairly with TCP traffic. Therefore, measured bandwidth shares of flows are not necessarily equal, even when all flows are...
[December 6, 2007, 23:00]
MPEG-4 Video Transfer With TCP-Friendly Rate Control
White Papers This paper proposes TCP-friendly MPEG-4 video transfer methods which enable realtime video applications to fairly share the bandwidth with conventional TCP data applications. It is widely known that network bandwidth is easily monopolized by...
[January 14, 2008, 23:00]
