Performance Evaluation of Vehicle-to-Vehicle Communication for Cooperative Collision Avoidance at Urban Intersections

Abstract

Vehicle-to-Vehicle (V2V) communication can significantly enhance the performance of collision avoidance systems through periodically exchanging information between vehicles. At urban intersections, the effect of shadowing caused by buildings has a severe influence on the communication performance. In addition, an increased traffic density near an intersection creates a high level of interference, which can lead to a communication performance degradation. In this paper, we evaluate the performance of IEEE 802.11p based V2V communication for cooperative collision avoidance at urban intersections. We focus on the impact of shadowing from buildings and of traffic density on the communication performance. For this purpose, we investigate the effect of both the data rate and transmission power in different scenarios. The simulation results show that transmission power and data rate can be tailored to increase the reliability of the communication for the collision avoidance system. Simulation results also show that buildings at intersections reduce the interference from vehicles in other road sections. In addition, our simulation results reveal more insight on the main cause of packet loss near intersections. They show that loss due to packet collisions is the dominant reason, which can be reduced by increasing the data rate.

Vehicle-to-Pedestrian Channel Characterization: Wideband Measurement Campaign and First Results

“…The performance of ITS-G5 in various environments has been studied e.g. in [3]. Further, many new channel models for V2V and V2I have been proposed and summarized in surveys like [4] and [5].…”

Large-Scale Fading Characteristics and Models for Vehicle-to-Pedestrian Channel at 5-GHz

“…Their results showed that even in scenarios with relatively low channel load, there was a significant loss of packets. The authors in [2] verify the significant packet loss in their simulations and showed that a lower packet interreception time is achieved by choosing higher-order modulations in IEEE 802.11p. Several publications presented system concepts for VRUs protection such as [15].…”

“…In a stationary random process the square mean values of adjacent segments are independent [29] and any time trend will result in non-stationarity. The test checks if the examined random process has a time trend by calculating how many times, starting with x 2 1 , that each subsequent square mean value (x 2 2 , x 2 3 , . .…”

“…In 2018, vulnerable road users (VRUs), including pedestrians, cyclists and motorcyclists, accounted for almost half of the road victims [1]. It has been found through experiments and simulations that intelligent transportation system (ITS) applications have been successful in increasing road safety [2], [3]. However, VRUs received less attention than vehicles.…”

Spatial V2X Traffic Density Channel Characterization for Urban Environments

“…The VTD also impacts the network layer. In [14], it is demonstrated that high traffic density with heavy machinery/trucks, are related with significant reduction on the V2I reliable connectivity range and increase in the communications link variability, which is confirmed in [21] where the results show that increasing traffic density keeps the relationship with increased interference and increase in the update delay (UD), a performance metric for collision avoidance. Under smaller vehicle densities, the IEEE 802.11p standard offers end-toend delays of less than 100 ms and throughputs equivalent to 10 kbit/s which satisfy the requirements posed by active road safety applications, [22].…”