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.

PhantomNet: Research Infrastructure for Mobile Networking, Cloud Computing and Software-Defined Networking

Abstract: The PhantomNet facility allows experimenters to combine mobile networking, cloud computing and software-defined networking in a single environment. It is an end-to-end testbed, meaning that it supports experiments not just with mobile end-user devices but also with a cellular core network that can be configured and extended with new technologies. This article introduces PhantomNet and presents a road map for its future development. The current PhantomNet prototype is available now at no cost to researchers and educational users.

Quantifying the benefits of joint content and network routing

Abstract: Online service providers aim to provide good performance for an increasingly diverse set of applications and services. One of the most effective ways to improve service performance is to replicate the service closer to the end users. Replication alone, however, has its limits: while operators can replicate static content, wide-scale replication of dynamic content is not always feasible or cost effective. To improve the latency of such services many operators turn to Internet traffic engineering. In this paper, we study the benefits of performing replica-to-end-user mappings in conjunction with active Internet traffic engineering. We present the design of PECAN, a system that controls both the selection of replicas ("content routing") and the routes between the clients and their associated replicas ("network routing"). We emulate a replicated service that can perform both content and network routing by deploying PECAN on a distributed testbed. In our testbed, we see that jointly performing content and network routing can reduce round-trip latency by 4.3% on average over performing content routing alone (potentially reducing service response times by tens of milliseconds or more) and that most of these gains can be realized with no more than five alternate routes at each replica.

Supporting Internet-of-Things Analytics in a Fog Computing Platform

Abstract: Modern IoT analytics are computational and data intensive. Existing analytics are mostly hosted in cloud data centers, and may suffer from high latency, network congestion, and privacy issues. In this paper, we design, implement, and evaluate a fog computing platform that runs analytics in a distributed way on multiple devices, including IoT devices, edge servers, and data-center servers. We focus on the core optimization problem: making deployment decisions to maximize the number of satisfied IoT analytics. We carefully formulate the deployment problem and design an efficient algorithm, named SSE, to solve it. Moreover, we conduct a detailed measurement study to derive system models of the IoT analytics based on diverse QoS levels and heterogeneous devices to facilitate the optimal deployment decisions. We implement a testbed to conduct experiments, which show that the system models achieve reasonably good accuracy. More importantly, 100% of the deployed IoT analytics satisfy the QoS targets. We also conduct extensive simulations for larger-scale scenarios. The simulation results reveal that our SSE algorithm outperforms a state-of-the-art algorithm by up to 89.4% and 168.3% in terms of the number of satisfied IoT analytics and active devices. In addition, our SSE algorithm reduces CPU, RAM, and network resource consumptions by 18.4%, 12.7%, and 898.3%, respectively, and terminates in polynomial time.

Success PON demonstrator: experimental exploration of next-generation optical access networks

Abstract: The deployment of passive optical networks for broadband access has been largely recognized as a promising solution to open the first-/last-mile bottleneck. We propose and demonstrate a new hybrid TDM/WDM PON architecture that jointly serves multiple physical PONs to enjoy statistical multiplexing gain as well as cost sharing. This article describes design and implementation issues of the key building blocks, including fast tunable lasers, burst-mode receivers, and scheduling algorithms with quality of service support. A prototype testbed is constructed, and transmission experiments are performed to show the effectiveness of the integrated system. Coexistence with current PONs and future evolutional paths are described as well. Experimental explorations of the new network architecture involve advanced photonic and electronic subsystems, which inspires developments of the next-generation optical access networks.

Manipulating B-Spline Based Paths for Obstacle Avoidance in Autonomous Ground Vehicles

Abstract: The Overbot is one of the original DARPA Grand Challenge vehicles now being used as a platform for autonomous vehicle research. The vehicle, equipped with a complete actuator and sensor suite, provides for an extremely capable robotic platform with computing infrastructure and software framework already in place to create a reconfigurable testbed.