Download File - Computer Networks & Information Security
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User Datagram Protocol (UDP) UDP provides unreliable delivery Studies comparing different routing protocols for MANET typically measure UDP performance Several performance metrics are often used Routing overhead per data packet Packet loss rate Packet delivery delay 318
UDP Performance Several relevant studies [Broch98Mobicom,Das9ic3n,Johansson99Mobicom, Das00Infocom,Jacquet00Inria] Results comparing a specific pair of protocols do not always agree, but some general (and intuitive) conclusions can be drawn Reactive protocols may yield lower routing overhead than proactive protocols when communication density is low Reactive protocols tend to loose more packets (assuming than network layer drops packets if a route is not known) Proactive protocols perform better with high mobility and dense communication graph 319
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UDP Performance<br />
Several relevant studies<br />
[Broch98Mobicom,Das9ic3n,Johansson99Mobicom,<br />
Das00Infocom,Jacquet00Inria]<br />
Results comparing a specific pair of protocols do not<br />
always agree, but some general (and intuitive)<br />
conclusions can be drawn<br />
Reactive protocols may yield lower routing overhead than<br />
proactive protocols when communication density is low<br />
Reactive protocols tend to loose more packets (assuming<br />
than network layer drops packets if a route is not known)<br />
Proactive protocols perform better with high mobility and<br />
dense communication graph<br />
319
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