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- PDF-ShellTools (zip)
- PDF-ShellTools are Windows shell extensions to interact with pdf files directly from the Windows shell. This way we can do some interesting things to our pdf documents without the need to open them in Acrobat or another desktop pdf application.Right now, group these tools: PDF-InfoTip, PDF-InfoEdit,PDF-Anonymizer,PDF-Split and PDF-Merge. Version 1.0.0.9...
- Software downloads 2008-05-06
- 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
- Observations on Round-Trip Times of TCP Connections
- Knowledge about properties of network traffic can be beneficial when studying network protocols. It enables realistic models of network traffic to be created and evaluations of current protocols to take place. This study examines trends in Round-Trip Times (RTTs) at a university Web server. Round-trip time is a particularly important...
- White papers 2006-07-28
Additional Resources
- IQonn Lite (02)
- IQonn Lite is a very advanced Operator independent Connection Manager for Windows 2000, XP and Vista, offering the following functionalities: WWAN support, including; HSPDA, UMTS (3G), EDGE, GPRS, EV-DO, and 1x-RTT WLAN support, including; Hotspots Fixed Line support, for LAN and Dial-Up Automatic detection, installation and configuration of Wireless devices...
- Software downloads 2008-03-14
- Sprint unveils WiMax plans
- Sprint unveils WiMax plansWhy Max? Pervasive Connectivity.I signed up for got CDPD wireless data from a USAT Corp a while back, then Sprint rolled 1x-rtt-- the first to market as I recall. Next was EVDO-- a nice hop in speed (and equivalent available from Verizon, and similar from Cingular, AT&T...
- Discussion threads 2007-03-27
- An Adaptive End-to-End Loss Differentiation Scheme for TCP Over Wired/Wireless Networks
- This paper proposes a robust end-to-end loss differentiation scheme to identify the packet losses due to congestion for TCP connections over wired/wireless networks. The paper uses the measured RTT values in determining whether the cause of packet loss is due to congestion over wired path or regular bit errors over...
- White papers 2007-03-01
- CUBIC: A New TCP-Friendly High-Speed TCP Variant
- This paper presents a new TCP variant, called CUBIC, for high-speed network environments. CUBIC is an enhanced version of BIC: it simplifies the BIC window control and improves its TCP-friendliness and RTT-fairness. The window growth function of CUBIC is governed by a cubic function in terms of the elapsed time...
- White papers 2007-02-17
- The RTT Distribution of TCP Flows in the Internet and Its Impact on TCP-Based Flow Control
- It is well known that the performance of a TCP flow is affected by its Round-Trip Time (RTT), i.e., the elapsed time between the instant a packet is released by the source to the instant the corresponding ack is received by the source. The distribution of RTTs can dramatically affect...
- White papers 2007-01-01
- New Methods for Passive Estimation of TCP Round-Trip Times
- This paper proposes two methods to passively measure and monitor changes in Round-Trip Times (RTTs) throughout the lifetime of a TCP connection. The first method associates data segments with the ACKnowledgments (ACKs) that trigger them by leveraging the TCP timestamp option. The second method infers TCP RTT by observing the...
- White papers 2007-01-01
- TCP-Based Video Streaming Using Receiver-Driven Bandwidth Sharing
- This paper establishes the benefits of the proposed approach over standard TCP through Internet experiments involving a prototype for the Linux operating system. 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 causes the...
- White papers 2007-01-01
- The Origin of TCP Traffic Burstiness in Short Time Scales
- Internet traffic exhibits multifaceted burstiness and correlation structure over a wide span of time scales. This paper focuses on shorter scales, typically less than 100-1000 milliseconds. The objective is to identify the actual mechanisms that are mostly responsible for creating bursty traffic in those scales. It shows that TCP self-clocking,...
- White papers 2007-01-01
- On the Predictability of Large Transfer TCP Throughput
- With the advent of overlay and peer-to-peer networks, Grid computing, and CDNs, network performance prediction becomes an essential task. Predicting the throughput of large TCP transfers, in particular, has attracted much attention. This paper focuses on the design, empirical evaluation, and analysis of TCP throughput predictors for a broad class...
- White papers 2007-01-01
- A Stochastic Model for Short-Lived TCP Flows
- Internet has become an important part of daily life, in which the most commonly used applications such as world wide web, usenet news, file transfer and remote login have all opted for TCP as their transport medium. This paper proposes a new model for the slow-start phase based on the...
- White papers 2007-01-01
- Optimum Number of RLC Retransmissions for Best TCP Performance in UTRAN
- As far as transfer reliability is concerned, the wireless segment of UTRAN is the weakest part of an Internet session. To overcome this imperfection, the RLC protocol features a link-level retransmission mechanism. This paper shows by analytical means and computer simulations that for a given Block Error Rate (BLER), the...
- White papers 2007-01-01
- 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...
- White papers 2006-10-13
- TCP Symbiosis: Congestion Control Mechanisms of TCP Based on Lotka-Volterra Competition Model
- This paper proposes TCP Symbiosis, which has a robust, self-adaptive and scalable congestion control mechanism for TCP. The method is quite different from existing approaches. The paper changes the window size of a TCP connection in response to information of the physical and available bandwidths of the end-to-end network path....
- White papers 2006-10-12
- Rocks, Light, and SunOS 3.1
- Last Wednesday I had one of those headaches that result in too much aspirin and an overwhelming need to sit the four year old in front of the automated babysitter pretty much no matter what's on. In this case an episode of Dora the Explora; followed, in his case...
- Blog posts 2006-09-06
- CTCP: Improving TCP-Friendliness Over Low-Buffered Network Links
- Compound TCP (CTCP) is a sender-side improvement for TCP in high-speed and long distance networks. CTCP is a synergy of delay and loss-based congestion control, effectively combining them to achieve good efficiency, RTT fairness and TCP-friendliness. However, CTCP requires detecting incipient congestion effectively by estimating the backlogged packets and comparing...
- White papers 2006-09-02
- 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...
- White papers 2006-08-31
- Time-Driven Early Discard (TED) to Improve the Fairness of TCP Congestion Control
- This paper proposes a novel adaptive AQM (advanced queue management) approach called Time-Driven Early Discard (TED). The basic underlying idea is to set a deadline on packet service time in routers, beyond which packets are discarded. TED is shown to improve fairness among TCP connections sharing congested links when the...
- White papers 2006-08-29
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