Line-of-Sight Obstruction Analysis for Vehicle-to-Vehicle Network Simulations in a Two-Lane Highway Scenario
In vehicular ad-hoc networks (VANETs) the impact of vehicles as obstacles has largely been neglected in the past. Recent studies have reported that the vehicles that obstruct the line-of-sight (LOS) path may introduce 10–20 dB additional loss, and as a result reduce the communication range. Most of...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2013-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2013/459323 |
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| Summary: | In vehicular ad-hoc networks (VANETs) the impact
of vehicles as obstacles has largely been neglected in the past.
Recent studies have reported that the vehicles that obstruct the
line-of-sight (LOS) path may introduce 10–20 dB additional
loss, and as a result reduce the communication range. Most of
the traffic mobility models (TMMs) today do not treat other
vehicles as obstacles and thus cannot model the impact of
LOS obstruction in VANET simulations. In this paper the LOS
obstruction caused by other vehicles is studied in a highway
scenario. First a car-following model is used to characterize
the motion of the vehicles driving in the same direction on a
two-lane highway. Vehicles are allowed to change lanes when
necessary. The position of each vehicle is updated by using the
car-following rules together with the lane-changing rules for the
forward motion. Based on the simulated traffic a simple TMM
is proposed for VANET simulations, which is capable to identify
the vehicles that are in the shadow region of other vehicles.
The presented traffic mobility model together with the shadow
fading path-loss model can take into account the impact of
LOS obstruction on the total received power in the multiple-lane
highway scenarios. |
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| ISSN: | 1687-5869 1687-5877 |