Chapter 6 Wireless and Mobile Networks - Network and Systems Lab
Chapter 6 Wireless and Mobile Networks - Network and Systems Lab
Chapter 6 Wireless and Mobile Networks - Network and Systems Lab
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<strong>Wireless</strong>, mobility: impact on higher layer protocols<br />
logically, impact should be minimal …<br />
best effort service model remains unchanged<br />
TCP <strong>and</strong> UDP can (<strong>and</strong> do) run over wireless, mobile<br />
… but performance-wise:<br />
packet loss/delay due to bit-errors (discarded<br />
packets, delays for link-layer retransmissions), <strong>and</strong><br />
h<strong>and</strong>off<br />
TCP interprets loss as congestion, will decrease<br />
congestion window un-necessarily<br />
delay impairments for real-time traffic<br />
limited b<strong>and</strong>width of wireless links<br />
6: <strong>Wireless</strong> <strong>and</strong> <strong>Mobile</strong> <strong><strong>Network</strong>s</strong> 6-69
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