ACK RATE CONTROL STRATEGY AT THE LINK LAYER TO ENHANCE TCP OVER 3G LINKS

Juan J. Alcaraz, Fernando Cerdán

2006

Abstract

When TCP is carried over 3G links, overbuffering and buffer overflow at the RLC layer degrades its performance. In order to prevent these undesired cross-layer interactions, we propose an algorithm to control the rate of the acknowledgements (ACK) traversing the RLC entity at the network side. Since the sending rate of a TCP source is determined by the arrival rate of the ACKs, the basic idea of this scheme is to adjust the inder-departure time of the ACKs in the uplink direction, according to the congestion level of the downlink buffer. By means of extensive simulation experiments, we disclose the influence of each parameter on TCP performance. We provide several configurations that improve end-to-end goodput while reducing the delay. The operation of the algorithm is deterministic; it does not require changes in 3G specifications nor in TCP itself, and preserves TCP end-to-end semantics.

References

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Paper Citation


in Harvard Style

J. Alcaraz J. and Cerdán F. (2006). ACK RATE CONTROL STRATEGY AT THE LINK LAYER TO ENHANCE TCP OVER 3G LINKS . In Proceedings of the International Conference on Wireless Information Networks and Systems - Volume 1: WINSYS, (ICETE 2006) ISBN 978-972-8865-65-8, pages 34-42. DOI: 10.5220/0002090000340042


in Bibtex Style

@conference{winsys06,
author={Juan J. Alcaraz and Fernando Cerdán},
title={ACK RATE CONTROL STRATEGY AT THE LINK LAYER TO ENHANCE TCP OVER 3G LINKS},
booktitle={Proceedings of the International Conference on Wireless Information Networks and Systems - Volume 1: WINSYS, (ICETE 2006)},
year={2006},
pages={34-42},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002090000340042},
isbn={978-972-8865-65-8},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Wireless Information Networks and Systems - Volume 1: WINSYS, (ICETE 2006)
TI - ACK RATE CONTROL STRATEGY AT THE LINK LAYER TO ENHANCE TCP OVER 3G LINKS
SN - 978-972-8865-65-8
AU - J. Alcaraz J.
AU - Cerdán F.
PY - 2006
SP - 34
EP - 42
DO - 10.5220/0002090000340042