Experimental study on the impact of vehicular obstructions in VANETs
作者： Rui Meireles , Mate Boban , Peter Steenkiste , Ozan Tonguz , Joao Barros
关键词: Dedicated short-range communications 、 Wireless ad hoc network 、 Non-line-of-sight propagation 、 Vehicular ad hoc network 、 Wireless 、 Computer science 、 Real-time computing 、 Radio propagation 、 Computer network 、 Communication channel 、 Vehicular communication systems
摘要: Channel models for vehicular networks typically disregard the effect of vehicles as physical obstructions wireless signal. We aim to clarify validity this simplification by quantifying impact through a series experiments. Using two cars equipped with Dedicated Short Range Communications (DSRC) hardware designed use, we perform experimental measurements in order collect received signal power and packet delivery ratio information multitude relevant scenarios: parking lot, highway, suburban urban canyon. Upon separating data into line sight (LOS) non-line (NLOS) categories, our results show that obstructing cause significant on channel quality. A single obstacle can drop over 20 dB strength when communicate at distance 10 m. At longer distances, NLOS conditions affect usable communication range, effectively halving which be achieved 90% chance success. The presented motivate inclusion radio propagation used VANET simulation increase level realism.
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