![](bg8.png)
It also can be concluded that using the proposed
hardware configuration, there are not problems in
LOS scenarios because high values of PDR and good-
put are obtained. However,this configurationpresents
poor IEEE 802.11p performance in NLOS conditions,
so in order to provide full coverage of a givenarea, the
orography and building distribution must be studied
and maybe a fixed RSUs network should be deployed.
Before concluding this paper, we want to express
that more measurement campaigns should be per-
formed in a near future to complete this study, but
it could be considered as a starting point towards bet-
ter design of active safety applications. Higher dis-
tances among vehicles and RSUs should be tested and
in these situations problems as handover, beacons de-
lay or channel congestions issued will be tackled.
ACKNOWLEDGEMENTS
The authors would like to thank the EU Intelligent
Cooperative Sensing for Improved traffic efficiency
(ICSI) project (FP7-ICT-2011-8) for its support in the
development of this work.
REFERENCES
Bazzi, A. and Masini, B. (2011). Real time traffic updates
via umts: Unicast versus multicast transmissions. In
Vehicular Technology Conference (VTC Fall), 2011
IEEE, pages 1 –6.
Bhm, A. and Jonsson, M. Real-time communication
support for cooperative, infraestructure-based traffic
safety applications. Internationl Journal of Vehicular
Technology, 2011:17.
Bilstrup, K., Uhlemann, E., Strm, E. G., and Bilstrup, U.
(January 2009). On the ability of the 802.11p mac
method and stdma to support real-time vehicle-to-
vehicle communication. EURASIP Journal on Wire-
less Communications and Networking - Special issue
on wireless access in vehicular environments, (5).
Bilstrup, K., Uhlemann, E., Strom, E., and Bilstrup, U.
(2008). Evaluation of the ieee 802.11p mac method
for vehicle-to-vehicle communication. In Vehicular
Technology Conference, 2008. VTC 2008-Fall. IEEE
68th, pages 1 –5.
Chen, Q., Jiang, D., and Delgrossi, L. (2009). Ieee 1609.4
dsrc multi-channel operations and its implications on
vehicle safety communications. In Vehicular Net-
working Conference (VNC), 2009 IEEE, pages 1 –8.
Chou, C.-M., Li, C.-Y., Chien, W.-M., and chan Lan,
K. (2009). A feasibility study on vehicle-to-
infrastructure communication: Wifi vs. wimax. In
Mobile Data Management: Systems, Services and
Middleware, 2009. MDM ’09. Tenth International
Conference on, pages 397 –398.
ETSI (2009-06). Intelligent Transport Systems (ITS) and
Vehicular communications and Basic set of applica-
tions and Definitions. ETSI TR 102 638 V1.1.1.
ETSI (2010-01). Intelligent Transport Systems (ITS)
and European profile standard for the physical and
medium access control layer of Intelligent Transport
Systems operating in the 5 GHz frequency band. ETSI
ES 202 663 V1.1.0.
Han, C., Dianati, M., Tafazolli, R., Kernchen, R., and Shen,
X. (2012). Analytical study of the ieee 802.11p mac
sublayer in vehicular networks. Intelligent Trans-
portation Systems, IEEE Transactions on, 13(2):873
–886.
Jiang, D. and Delgrossi, L. (2008). Ieee 802.11p: Towards
an international standard for wireless access in vehic-
ular environments. In Vehicular Technology Confer-
ence, 2008. VTC Spring 2008. IEEE, pages 2036 –
2040.
of State Highway, A. A. and Officials, T. (2001). A Policy
on Geometric Design of Highways and Streets (The
Green Book).
Saeed, R. A., Naemat, A. B. H., Aris, A. B., Khamis, I. M.,
and Awang, M. K. B. (2010-11). Evaluation of the
ieee 802.11p-based tdma mac. In International Jour-
nal of Network and Mobile Technologies, Vol. 1, Issue
2.
SAEJ2735 (2009). SAE J2735 (R) Dedicated Short Range
Communications (DSRC) Message Set Dictionary.
Triggs, T., Harris, W., of Psychology, M. U. D., Group, M.
U. H. F., and of Road Safety, A. O. (1982). Reaction
Time of Drivers to Road Stimuli. Human factors re-
port. Human Factors Group, Department of Psychol-
ogy, Monash University.
USDOT (2004). Vehicle Safety Communications Project:
Task 3 Final Report: Identify Intelligent Vehicle Safety
Applications Enabled by DSRC. National Highway
Traffic Safety Administration, Office of Research and
Development, Washington, D.C.
Uzcategui, R. and Acosta-Marum, G. (2009). Wave: A tu-
torial. Communications Magazine, IEEE, 47(5):126
–133.
Wewetzer, C., Caliskan, M., Meier, K., and Luebke, A.
(2007). Experimental evaluation of umts and wireless
lan for inter-vehicle communication. In Telecommuni-
cations, 2007. ITST ’07. 7th International Conference
on ITS, pages 1 –6.
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