Testbed

About: Testbed is a research topic. Over the lifetime, 10858 publications have been published within this topic receiving 147147 citations. The topic is also known as: test bed.

Testbed for Wireless Vehicle Communication: a Simulation Approach based on Three-Phase Traffic Theory

Abstract: A testbed for wireless vehicle communication based on a microscopic model in the framework of three-phase traffic theory is presented. In this testbed, vehicle motion in traffic flow and analyses of a vehicle communication channel access based on IEEE 802.11e mechanisms, radio propagation modeling, message reception characteristics as well as all other effects associated with ad-hoc networks are integrated into a three-phase traffic flow model. Based on simulations of this testbed, some statistical features of ad-hoc vehicle networks as well as the effect of C2C communication on increase in the efficiency and safety of traffic are studied.

ZeroCal: automatic MAC protocol calibration

Abstract: Sensor network MAC protocols are typically configured for an intended deployment scenario once and for all at compile time This approach, however, leads to suboptimal performance if the network conditions deviate from the expectations We present ZeroCal, a distributed algorithm that allows nodes to dynamically adapt to variations in traffic volume Using ZeroCal, each node autonomously configures its MAC protocol at runtime, thereby trying to reduce the maximum energy consumption among all nodes While the algorithm is readily usable for any asynchronous low-power listening or low-power probing protocol, we validate and demonstrate the effectiveness of ZeroCal on X-MAC Extensive testbed experiments and simulations indicate that ZeroCal quickly adapts to traffic variations We further show that ZeroCal extends network lifetime by 50% compared to an optimal configuration with identical and static MAC parameters at all nodes

Generating client workloads and high-fidelity network traffic for controllable, repeatable experiments in computer security

Abstract: Rigorous scientific experimentation in system and network security remains an elusive goal. Recent work has outlined three basic requirements for experiments, namely that hypotheses must be falsifiable, experiments must be controllable, and experiments must be repeatable and reproducible. Despite their simplicity, these goals are difficult to achieve, especially when dealing with client-side threats and defenses, where often user input is required as part of the experiment. In this paper, we present techniques for making experiments involving security and client-side desktop applications like web browsers, PDF readers, or host-based firewalls or intrusion detection systems more controllable and more easily repeatable. First, we present techniques for using statistical models of user behavior to drive real, binary, GUI-enabled application programs in place of a human user. Second, we present techniques based on adaptive replay of application dialog that allow us to quickly and efficiently reproduce reasonable mock-ups of remotely-hosted applications to give the illusion of Internet connectedness on an isolated testbed. We demonstrate the utility of these techniques in an example experiment comparing the system resource consumption of a Windows machine running anti-virus protection versus an unprotected system.

SMT2020—A Semiconductor Manufacturing Testbed

Abstract: We present a new set of simulation models, organized in a testbed. The aim of the testbed consists in providing researchers with a platform able to credibly represent the complexity of modern semiconductor manufacturing. The testbed is open to public use, and include so far four models. A high-volume/low-mix model and a low-volume/high-mix model constitutes the foundation of the testbed. Two additional models incorporate the complexity of engineering lots. We conclude this paper by presenting a case study that demonstrates that the third and fourth model can be used to assess the performance of integrated dispatching strategies for production and engineering lots.

Celerity: a low-delay multi-party conferencing solution

Abstract: In this paper, we attempt to revisit the problem of multi-party conferencing from a practical perspective, and to rethink the design space involved in this problem. We believe that an emphasis on low end-to-end delays between any two parties in the conference is a must, and the source sending rate in a session should adapt to bandwidth availability and congestion. We present Celerity, a multi-party conferencing solution specifically designed to achieve our objectives. It is entirely Peer-to-Peer (P2P), and as such eliminating the cost of maintaining centrally administered servers. It is designed to deliver video with low end-to-end delays, at quality levels commensurate with available network resources over arbitrary network topologies where bottlenecks can be anywhere in the network. This is in contrast to commonly assumed P2P scenarios where bandwidth bottlenecks reside only at the edge of the network. The highlight in our design is a distributed and adaptive rate control protocol, that can discover and adapt to arbitrary topologies and network conditions quickly, converging to efficient link rate allocations allowed by the underlying network. In accordance with adaptive link rate control, source video encoding rates are also dynamically controlled to optimize video quality. We have implemented Celerity in a prototype system, and demonstrate its superior performance over existing solutions in a local experimental testbed and over the Internet.