MOBICOM

Wireless network testbeds have become increasingly important for realistic, at-scale experimental evaluation of new network architectures, protocols and radio technologies. Wireless testbeds such as ORBIT and GENI campus networks are being used for ...

This article discusses lessons learned from use of our publicly available wireless networking testbed, assert[1]. In [1] we discussed the design and implementation phase of a testbed based on a set of propositions. By opening the testbed to users not ...

Wireless network testbeds have emerged as a valuable alternative to network simulation, but actually using them for experiments presents a number of challenges. We use the ORBIT testbed at Rutgers University, New Jersey, USA as a case study to ...

Multihop wireless networks, such as sensor-, ad hoc- and mesh-networks, although different share some common characteristics. All these networks exhibit link dynamics. Protocols designed for these wireless networks must overcome the challenge of link ...

Traditional evaluation studies of MANET routing protocols have concentrated on quantitative, traffic-based metrics like throughput and packet loss. These metrics provide a limited evaluation of protocol performance because they do not measure how well ...

As a first step towards predictable, repeatable WSN experimentation, we propose the resource specification language LENS (a.k.a. Language for Embedded Networked Sensing) for WSN experimentation infrastructures. Using the Resource Description Framework (...

Device-free passive (DfP) localization has been recently proposed to allow localizing a stationary entity that neither carries a device nor participates actively in the localization process. In this paper, we present a Kalman filter-based system that ...

The rapidly increasing popularity of IEEE 802.11 WLANs has created unprecedented levels of congestion in the unlicensed frequency bands, especially in densely populated urban areas. Performance experienced by end-users in such deployments is ...

Directional antenna systems can provide two benefits 1) improve signal strength and increase communication range, and 2) improve spatial reuse. Recent work has drawn contradicting conclusions in terms of which of the two benefits dominates in indoor ...

This paper reports experimental results comparing the performance of four platforms employed in spectrum sensing and dynamic spectrum access research: a sensing engine developed at imec and built around a prototype RFIC; the Universal Software Radio ...

The investigation and assessment of information theoretic concepts for wireless resource management in real-world scenarios requires flexible testbeds with wide range of reconfigurable parameters. These functionalities are currently offered only in ...

Wireless sensor networks (WSN) have become increasingly important in recent times. Sensor nodes are the building blocks for a typical WSN. Due to their limited computational, communication and energy abilities, the sensor nodes serve as the deciding ...

Mobile Ad-Hoc Networks (MANETs) rely on the 802.11 ad-hoc mode to establish communication with nearby peers. In practice, this makes MANETs hard to realize. While 802.11-compliant mobile devices implement the ad-hoc mode on the hardware layer, the ...

An effective solution for increasing spectrum efficiency in current networks assumes OFDM-based cognitive radio (CR) systems, which allow for reconfigurable activation and loading on specific group of subcarriers in locally available spectrum. However, ...

Current methods for building radio maps for wireless localization systems require a tedious, manual and error-prone calibration of the area of interest. Each time the layout of the environment is changed or different hardware is used, the whole process ...

We present an approach to improve simulation results by automatically mapping the network topology of real wireless networks into a simulation environment. We basically target two problem domains: First, simulations are often used with rather arbitrary ...

In the last decade testbeds have been set-up to evaluate network protocols and algorithms under realistic settings. Moreover, wireless sensors have lately been integrated into testbeds in order to simulate application scenarios for lowpower sensor ...

In this demo, we prove that the flexibility supported by off-the-shelf IEEE 802.11 hardware can be significantly extended if we move the control of the MAC programming interface from the driver to the firmware, i.e. from the host CPU to the card CPU. To ...

Enabling routers in wireless mesh networks (WMNs) with MIMO capability boosts throughput by allowing for spatial multiplexing(SM), interference cancellation(IC) and spatial diversity. Antenna elements can be divided arbitrarily in accordance with the ...

In mid-stack wireless networking research, simulation is often the final step of many research projects. Implementing and testing ideas on experimental networks can be difficult and expensive. The logistics and cost of buying, administering, and ...

This paper presents a user-friendly TinyOS and Java-based tool for hassel-free collection of real-world wireless traces from any real-world environment (indoor or outdoor).

This work-in-progress presents our efforts on enabling on the credible evaluation of Wireless Sensor Networks (WSN) using the three basic evaluation environments available in this field: real-world deployments, testbeds, and simulators. The ultimate ...