International Journal of Vehicular Technology / 2013 / Article / Tab 2

Research Article

Performance Comparison of IEEE 802.11p and IEEE 802.11b for Vehicle-to-Vehicle Communications in Highway, Rural, and Urban Areas

Table 2

PHY layer values of IEEE 802.11b and IEEE 802.11p [7].

ParametersIEEE 802.11bIEEE 802.11p

Channel bandwidth20 MHz10 MHz
Data rates1 to 11 Mbps3 to 27 Mbps
Slot time20 μs16 μs
SIFS time10 μs32 μs
Preamble length 96 μs (short), 192 μs (long)32 μs
Air propagation time<2 μs<4 μs
CWmin3115
CWmax10231023

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