Modeling and control of IP transport in cellular radio links

QC 20141216
A fundamental assumption of the TCP protocol is that packet losses indicate congestion on the network. This is a problem when using TCP over wireless links, because a noisy radio transmission may erroneously indicate congestion and thereby reduce the TCP sending rate. Two partial solutions, which improve the quality of the radio link, are power control and link-layer retransmissions. We consider a radio channel with multiple users and traffic classes, and investigate how parameters in the radio model influences TCP-related quality measures, such as the average delay and the probability of spurious timeout. The results indicate that the outer loop power control is robust to uncertainties in the radio model. This robustness property supports separation between the radio layer design and the IP and TCP layers.

TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Reglerteknik hsv//swe
ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Control Engineering hsv//eng
ARQ
Feedback control
Power control
TCP
WCDMA
Average delay
Cellular radios
Modeling and control
Multiple user
Outer loop power controls
Quality measures
Radio channels
Radio model
Retransmissions
Robustness properties
Sending rate
Spurious timeout
TCP over wireless
TCP protocol
Traffic class
Automation
Control
Radio broadcasting
Radio links
Robust control
Transmission control protocol
Radio transmission

Av författaren/redakt...: Möller, Niels; Fischione, C.; Johansson, Karl ...; Santucci, F.; Graziosi, F.

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Elektroteknik oc ...; och Reglerteknik

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