Packet transmission time in 802.11

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Frame exchange duration for a unicast data frame and the acknowledgement frame

For 802.11b bitrates (valid in 802.11b and g; short headers used)

Payload in bytes: 1500
Short preamble and headers: yes
Data transmission bitrate (802.11b/g) 1 Mbps 2 Mbps 5.5 Mbps 11 Mbps
Bitrate (Mbit/s) Length (bits) Time (μs) Bitrate (Mbit/s) Length (bits) Time (μs) Bitrate (Mbit/s) Length (bits) Time (μs) Bitrate (Mbit/s) Length (bits) Time (μs)
DIFS 50 50 50 50
D PHY header: PLCP preamble 1 144 144 1 72 72 1 72 72 1 72 72
A PHY header: PLCP header 1 48 48 2 48 24 2 48 24 2 48 24
T MAC headers (ad-hoc mode: 28 Bytes) 1 224 224 2 224 112 6 224 41 11 224 zus.
A MAC body 1 12000 12000 2 12000 6000 6 12000 2182 11 12000 1112
tx time data: 12466 6258 2369 1258
SIFS 10 10 10 10
A PHY header: PLCP preamble 1 144 144 1 72 72 1 72 72 1 72 72
C PHY header: PLCP header 1 48 48 2 48 24 2 48 24 2 48 24
K MAC headers 1 112 112 2 112 56 6 112 21 11 112 11
tx time ack: 314 162 127 117
tx time data + ack: 12780 6420 2496 1375