On the Impact of Building Attenuation Models in VANET Simulations of Urban Scenarios

Abstract

Buildings are important elements of cities for VANETs, since these obstacles may attenuate communications between vehicles. Consequently, the impact of buildings has to be considered as part of the attenuation model in VANET simulations of urban scenarios. However, the more elaborated the model, the more information needs to be processed during the simulation, which implies longer processing times. This complexity in simulations is not always worth it, because simplified channel models occasionally offer very accurate results. We compare three approaches to model the impact of buildings in the channel model of simulated VANETs in two urban scenarios. The simulation results for our evaluation scenarios of a traffic-efficiency application indicate that modeling the influence of buildings in urban areas as the total absence of communication between vehicles gives similar results to modeling such influence in a more realistic fashion and could be considered a conservative bound in the performance metrics.

Bandwidth estimation in high mobility scenarios of IEEE 802.11 infrastructure‐less mobile ad hoc networks

“…Transmission power at 6 and 54 Mbps are set to 20 and 16 dBm, respectively, and the receiving sensitivity at 6 and 54 Mbps are set to −85 and −69 dBm. Interference among simultaneous transmissions is accounted using technique in Urquiza‐Aguiar et al At a given time t , link transmission for n i is successful if for any other transmission n j it follows: where T j ( t ) and R i ( t ) are the location metric of the transmitter and receiver, and δ is ground factor for interference control. Apart from previous model, the new U.K. model is employed to capture the effect of obstacle like tree and building both in the LOS and NLOS conditions; the related definitions are presented below:…”

“…Transmission power at 6 and 54 Mbps are set to 20 and 16 dBm, respectively, and the receiving sensitivity at 6 and 54 Mbps are set to −85 and −69 dBm. Interference among simultaneous transmissions is accounted using technique in Urquiza-Aguiar et al 39 At a given time t, link transmission for n i is successful if for any other transmission n j it follows:…”

“…where T j (t) and R i (t) are the location metric of the transmitter and receiver, and is ground factor for interference control. Apart from previous model, the new U.K. model is employed to capture the effect of obstacle like tree and building both in the LOS and NLOS conditions 39 ; the related definitions are presented below:…”

Connected Vehicles, V2V Communications, and VANET

“…This complexity in simulations is not always worth it, because simplified channel models occasionally offer very accurate results. In [4], the author compares three approaches to model the impact of buildings in the channel model of simulated VANETs in two urban scenarios. The simulation results for our evaluation scenarios of a traffic-efficiency application indicate that modeling the influence of buildings in urban areas as the total absence of communication between vehicles gives similar results to modeling such influence in a more realistic fashion and could be considered a conservative bound in the performance metrics.…”

A Realistic Path Loss Model for Real-time Communication in the Urban Grid Environment for Vehicular Ad hoc Networks

“…Therefore, in this work we propose a model with less complexity and limitation of implementation in case of environmental dependency of the model. The main selected effects for the development of new model are diffraction and reflection, which commonly occur in grid urban environments surrounded by buildings [8] [35]. These effects can be used in different techniques like Ray Tracing [9] [10] [11] to improve the performance of vehicle to vehicle communication via a deterministic model.…”