Title :
Performance Analysis of CSMA/CA Broadcast Relay Network for ITS V2V Communications
Author :
Cheng, Huiting ; Yamao, Yasushi
Author_Institution :
Adv. Wireless Commun. Res. Center, Univ. of Electro-Commun., Chofu, Japan
Abstract :
The reliability of CSMA/CA vehicle-to-vehicle (V2V) communication under actual road environment suffers from fading, shadowing and hidden terminal (HT) problem. In order to improve the communication reliability, a V2V broadcast scheme with relay stations has been proposed and its effectiveness was shown by some simulations. However, the potential of the CSMA/CA broadcast relay network has not been well analyzed and optimized. In this paper, a theoretical model is proposed to analyze the performance of such network in detail. In order to fit the realistic vehicular environment, the model assumes a typical crossroad and takes into account fading, shadowing, hidden terminal problem and capture effect, as well as distances between nodes. The influence of system parameters including RF frequency band and carrier sense threshold on the reliability of the network is also studied through the analysis. The accuracy of the proposed analytical model was validated by simulations. Some suggestions to enhance the reliability of V2V communication are provided based on the results.
Keywords :
automated highways; broadcast communication; code division multiple access; telecommunication congestion control; telecommunication network reliability; telecommunication network topology; vehicular ad hoc networks; CSMA-CA broadcast relay network; CSMA-CA vehicle-to-vehicle communication reliability; HT problem; ITS V2V communications; RF frequency band; V2V broadcast scheme; capture effect; carrier sense multiple access-with-collision avoidance; carrier sense threshold; fading problem; hidden terminal problem; intelligent transportation systems; performance analysis; relay stations; road environment; shadowing problem; Analytical models; Interference; Multiaccess communication; Relays; Reliability; Signal to noise ratio; Vehicles;
Conference_Titel :
Vehicular Technology Conference (VTC Spring), 2012 IEEE 75th
Conference_Location :
Yokohama
Print_ISBN :
978-1-4673-0989-9
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2012.6240027
