TY - GEN
T1 - IEEE 802.11p performance evaluation and protocol enhancement
AU - Wang, Yi
AU - Ahmed, Akram
AU - Krishnamachari, Bhaskar
AU - Psounis, Konstantinos
PY - 2008
Y1 - 2008
N2 - The IEEE 802.11p Wireless Access in Vehicular Environment (WAVE) protocol providing for vehicle-to-infrastructure and vehicle-to-vehicle radio communication is currently under standardization. We provide an NS-2 simulation study of the proposed IEEE 802.11p MAC protocol focusing on vehicle-to- infrastructure communication. We show that the specified MAC parameters for this protocol can lead to undesired throughput performance because the backoff window sizes are not adaptive to dynamics in the numbers of vehicles attempting to communicate. We propose two solutions to this problem. One is a centralized approach where exact information about the number of concurrent transmitting vehicles is used to calculate the optimal window size, and the other is a distributed approach in which vehicles use local observations to adapt the window size.We show that these schemes can provide significant improvements over the standard MAC protocol under dense and dynamic conditions.
AB - The IEEE 802.11p Wireless Access in Vehicular Environment (WAVE) protocol providing for vehicle-to-infrastructure and vehicle-to-vehicle radio communication is currently under standardization. We provide an NS-2 simulation study of the proposed IEEE 802.11p MAC protocol focusing on vehicle-to- infrastructure communication. We show that the specified MAC parameters for this protocol can lead to undesired throughput performance because the backoff window sizes are not adaptive to dynamics in the numbers of vehicles attempting to communicate. We propose two solutions to this problem. One is a centralized approach where exact information about the number of concurrent transmitting vehicles is used to calculate the optimal window size, and the other is a distributed approach in which vehicles use local observations to adapt the window size.We show that these schemes can provide significant improvements over the standard MAC protocol under dense and dynamic conditions.
UR - http://www.scopus.com/inward/record.url?scp=67650088731&partnerID=8YFLogxK
U2 - 10.1109/ICVES.2008.4640898
DO - 10.1109/ICVES.2008.4640898
M3 - Conference contribution
AN - SCOPUS:67650088731
SN - 9781424423606
T3 - Proceedings of the 2008 IEEE International Conference on Vehicular Electronics and Safety, ICVES 2008
SP - 317
EP - 322
BT - Proceedings of the 2008 IEEE International Conference on Vehicular Electronics and Safety, ICVES 2008
ER -