Using Buffer Management in 3G Radio Bearers to Enhance End-to-End TCP Performance

Authors:
Juan J. Alcaraz;Fernando Cerdan
Affiliations:
Polytechnic University of Cartagena, Plaza del Hospital,Cartagena, Spain;Polytechnic University of Cartagena, Plaza del Hospital,Cartagena, Spain
Venue:
AINA '06 Proceedings of the 20th International Conference on Advanced Information Networking and Applications - Volume 02
Year:
2006

Citing 0
Cited 2

Combining ACK rate control and AQM to enhance TCP performance over 3G links

Proceedings of the ACM international workshop on Performance monitoring, measurement, and evaluation of heterogeneous wireless and wired networks
Using buffer management in 3G radio bearers to enhance end-to-end TCP performance

International Journal of Wireless and Mobile Computing

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Abstract

TCP performance over 3G links can be enhanced by means of Active Queue Management (AQM) techniques at the downlink buffer of the mobile network link layer (RLC). In this paper we describe Slope Based Discard (SBD), a novel deterministic buffer management technique whose discarding policy is based on the observation of the filling rate of the buffer. By means of extensive simulation experiments we compare the performance of TCP over three different RLC buffer management schemes: drop-tail (no AQM), SBD and Random Early Detection (RED). The simulation scenarios are configured to evaluate how the end-to-end goodput and delay are influenced by the number of multiplexed flows, the TCP flavor, the buffer size and the wireless channel error rate.