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Flow Aggregation
Transparent TCP/IP
acceleration for Cellular links |
We have proposed Flow Aggregation
as a powerful new mechanism to overcome the performance problems of
TCP/IP protocol over cellular (GPRS) links. The key idea of this scheme
is that there are significant advantages in treating all TCP flows destined to a
particular mobile host as a single
logical aggregate, taking advantage of the flows' statistical
dependence to perform better scheduling, flow prioritization and
control in order to maximise the link utilisation, reduce latency, and
improve fairness between TCP flows.
In contrast to the vast majority of
the approaches that necessitate end-system changes, the primary
advantage in our approach is that it requires no changes to the
end-system TCP
stack. We implemented an initial prototype of this scheme as a
transparent proxy solution, and demonstrated its efficacy in a
commercial cellular GPRS network testbed through real experiments.
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