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Spurious RTOs on Regular TCP
Delay spikes occur on wireless networks due to
handoffs
link-layer error recovery
bandwidth variation
Delay spike may trigger TCP retransmission timer

Problems:
Regular TCP sender retransmits whole window unnecessarily in slow start
Network resources are wasted
Dishonors packet conservation principle
In many cases severe performance penalty to the TCP flow
Delay spike
Unnecessary
retransmissions
Spurious RTO
PPT Version