Measurement and modeling of a UHF‐RFID system in a metallic closed vehicle

IEEE SENSORS 2014 Proceedings

et al. 2014

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In this work, the massive deployment of wireless sensor networks inherent in the implementation of context aware Smart City environments is presented. A precise estimation considering the topology and the morphology of wide service areas, with a potential large density of transceivers is performed with the aid of in-house deterministic 3D ray launching algorithm, which is specifically adapted to the conditions of large volume and large traffic density. Due to the co-existence of multiple wireless systems (such as wireless local area networks, mobile networks, body area networks or RF proprietary systems), a heterogeneous scenario, in terms of traffic distribution and hence overall interference is present. The precise characterization of coverage areas of all wireless transceivers, as information sources or undesired interference sources, leads to optimal deployment configurations, in which interference levels are minimized, quality of service is enhanced and overall energetic consumption can be optimized.

Section: Scenario Description and Simulation Parametersmentioning

confidence: 99%

Analysis of efficient dense wireless sensor network deployment in Smart City environments

López-Iturri

Aguirre

IEEE SENSORS 2014 Proceedings

et al. 2014

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“…In order to perform radio propagation analysis of the traffic light system, a 3D Ray Launching algorithm implemented in-house has been employed [4][5]. The 3D RL code is based on a geometric optics approximation, combined with Uniform Theory of Diffraction, in which rays are launched from a given radiation sources, with a number of rays launched as a function of angular resolution in both theta and phi angular planes, providing effective solid angle operation.…”

Section: Ray Launching Techniquementioning

confidence: 99%

<strong>Radio Wave Characterization in Wireless Sensor Network-based Intelligent Transportation Systems for Traffic Light Control Systems</strong>

Martínez

Proceedings of 2nd International Electronic Conference on Sensors and Applications

López-Iturri

et al. 2015

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Abstract:With the growing demand of Intelligent Transportation Systems (ITS) for safer and more efficient transportation, the research and development of such vehicular communication systems have increased considerably in the last years. In this sense, wireless systems have been increasingly adopted in order to enable ITS communication. In this context, adequate wireless channel characterization is compulsory on order to guarantee quality of service requirements. In this work, the radio wave characterization for ISM 2.4GHz Wireless Sensor Networks (WSN) for a traffic light control system has been assessed. By means of an in-house developed 3D Ray Launching algorithm, the impact of topology as well as morphology of the environment has been analyzed, emulating a realistic Traffic Light system in an urban placement. The complexity of the scenario, which is an intersection city area with traffic lights, vehicles, people, buildings, vegetation and urban environment, makes necessary the channel characterization with accurate models before the deployment of wireless networks. A measurement campaign has been conducted emulating the traffic light control system. Results show that the use of deterministic tools can aid in providing optimal network deployment to fulfill service requirements of the required WSN to enable interactive Traffic Light system.

“…Different applications of this algorithm can be found in the literature, like the analysis of wireless propagation in closed environments [15][16][17][18], interference analysis [19] or electromagnetic dosimetry evaluation in wireless systems [20].…”

Section: Ray Launching Technique and Simulation Scenariomentioning

confidence: 99%

Analysis of Radio Wave Propagation for ISM 2.4GHz Wireless Sensor Networks in Inhomogeneous Vegetation Environments

Proceedings of International Electronic Conference on Sensors and Applications

Lopez

Aguirre

et al. 2014

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Abstract:The use of wireless networks has experienced exponential growth due to the improvements in terms of battery life and low consumption of the devices. However, it is compulsory to conduct previous radio propagation analysis when deploying a wireless sensor network. These studies are necessary to perform an estimation of the range coverage, in order to optimize the distance between devices in an actual network deployment. In this work, the radio channel characterization for ISM 2.4 GHz Wireless Sensor Networks (WSNs) in an inhomogeneous vegetation environment has been analyzed. This analysis allows designing environment monitoring tools based on ZigBee and WiFi where WSN and smartphones cooperate, providing rich and customized monitoring information to users in a friendly manner. The impact of topology as well as morphology of the environment is assessed by means of an in-house developed 3D Ray Launching code, to emulate the realistic operation in the framework of the scenario. Experimental results gathered from a measurement campaign conducted by deploying a ZigBee Wireless Sensor Network, are analyzed and compared with simulations in this paper. The scenario where this network is intended to operate is a combination of buildings and diverse vegetation species. To gain insight in the effects of radio propagation, a OPEN ACCESSSensors 2014, 14 23651 simplified vegetation model has been developed, considering the material parameters and simplified geometry embedded in the simulation scenario. An initial location-based application has been implemented in a real scenario, to test the functionality within a context aware scenario. The use of deterministic tools can aid to know the impact of the topological influence in the deployment of the optimal Wireless Sensor Network in terms of capacity, coverage and energy consumption, making the use of these systems attractive for multiple applications in inhomogeneous vegetation environments.