[Make-wifi-fast] half the transmission time?
dave.taht at gmail.com
Wed Dec 14 18:55:23 EST 2016
H/T to Bruno Moraes:
"Over half of the transmission time in WiFi networks is
dedicated to ensuring that errors are corrected or detected.
Despite these mechanisms, many studies have concluded
that frame error rates vary. An increased
understanding of why frames are lost is a pragmatic approach to
improving real world 802.11 throughput. The
potential beneficiaries of this research, include rate control
algorithms, Modulation and Coding Schemes, simulation models,
frame size selection and 802.11 configuration guidelines.
This paper presents a measurement study of the factors which
correlate with packet loss in 802.11 WiFi. Both passive and
active approaches were used to investigate how the frame size,
modulation and coding scheme and airtime effect the loss
rate. Overall, packet errors were high, but the size of
frames were not a major determinant of the loss rate. The
loss rate decreased with the airtime but at substantially
lower rates than those suggested in simple packet error
models. Future work will further try to isolate and investigate
specific errors, such as head on collisions in the preamble"
Let's go make home routers and wifi faster! With better software!
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