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Cross-layer Analysis of TCP Performance in a 4G System.
Stefan Alfredsson,
Karlstad University,
Anna Brunström,
Karlstad University, and
Mikael Sternad,
Uppsala University.
2007 International Conference
on Software, Telecommunikcations and Computer
Networks, SoftCOM,
Spit-Dubrovnik, 27-29 September 2007.
- Abstract:
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This paper presents results from an experimental
study of TCP in a wireless 4G evaluation system.
Test-bed results on transport layer performance
are presented and analyzed in relation to several
link layer aspects. The aspects investigated are the
impact of channel prediction errors, channel
scheduling, delay, and adaptive modulation switch
level, on TCP performance.
The paper contributes a cross-layer analysis of
the interaction between symbol modulation levels,
different scheduling strategies, channel prediction
errors and the resulting frame retransmissions
effect on TCP.
The paper also shows that highly persistent
ARQ with fast link retransmissions do not
interact negatively with the TCP retransmission
timer even for short round trip delays.
- Related publications:
-
ISWCS-08-paper describing performance for
delay-sensitive applications.
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ISWCS-06-paper describing the emulator methodology.
- Source:
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Pdf; 105K.
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