Research Article

Improvement and Performance Evaluation of IEEE 802.11p Protocol in Dense Scenario of VANET

Table 3

Default parameters.

ParameterValue

Data length120 bytes
Transmission speed250 kbps
ACK duration864 μs
SIFS192 μs
LAt2.7 (0.864 ms)
LACK1.1 (0.352 ms)
Wmin7
Wmax56
macMaxCSMABackoffs5
macMinCSMABackoffs1
macMaxFrameRetries3
macMinFrameRetries0
macMaxBE5
macMinBE3
Number of nodes36-648
Number of packetsCMN+1
nmacMaxCSMABackoffs
mmacMaxFrameRetries