empirical study and modeling of vehicular communications at intersections in the 5 ghz band
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2017
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Abstract
Event warnings are critical in the context of ITS, being dependent on reliable and low-delay delivery of messages to nearby vehicles. One of the main challenges to address in this context is intersection management. Since buildings will severely hinder signals in the 5 GHz band, it becomes necessary to transmit at the exact moment a vehicle is at the center of an intersection to maximize delivery chances. However, GPS inaccuracy, among other problems, complicates the achievement of this goal. In this paper we study this problem by first analyzing different intersection types, studying the vehicular communications performance in each type of intersection through real scenario experiments. Obtained results show that intersection-related communications depend on the distances to the intersection and line-of-sight (LOS) conditions. Also, depending on the physical characteristics of intersections, the presented blockages introduce different degrees of hampering to message delivery. Based on the modeling of the different intersection types, we then study the expected success ratio when notifying events at intersections. In general, we find that effective propagation of messages at intersections is possible, even in urban canyons and despite GPS errors, as long as rooftop antennas are used to compensate for poor communication conditions.
| Reference Key |
hadiwardoyo2017mobileempirical
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|---|---|
| Authors | ;Seilendria A. Hadiwardoyo;Andrés Tomás;Enrique Hernández-Orallo;Carlos T. Calafate;Juan-Carlos Cano;Pietro Manzoni |
| Journal | ui sahak |
| Year | 2017 |
| DOI |
10.1155/2017/2861827
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| URL | |
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