Optimum Number of RLC Retransmissions for Best TCP Performance in UTRAN

Olivier De Mey; Laurent Schumacher; Xavier Dubois

doi:10.1109/PIMRC.2005.1651703

Optimum Number of RLC Retransmissions for Best TCP Performance in UTRAN

Olivier De Mey, Laurent Schumacher, Xavier Dubois

Faculty of Computer Science

Research output: Contribution in Book/Catalog/Report/Conference proceeding › Conference contribution

Abstract

As far as transfer reliability is concerned, the wireless segment of UTRAN is the weakest part of an Internet session. To overcome this imperfection, the RLC protocol features a link-level retransmission mechanism. In this paper, we show by analytical means and computer simulations that for a given Block Error Rate (BLER), the maximum number of RLC transmissions has a very important impact on TCP performance, both Round Trip Time and throughput. We extend existing models to be able to set a maximum number of RLC transmissions, and we determine the corresponding throughput analytically. We also show that, knowing the current BLER, a network operator may tune the maximum number of retransmissions either to reduce the RTT or to increase the throughput.

Original language	English
Title of host publication	2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications
Publisher	IEEE
ISBN (Print)	978-3-8007-2909-8
DOIs	https://doi.org/10.1109/PIMRC.2005.1651703
Publication status	Published - 2005

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10.1109/PIMRC.2005.1651703

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title = "Optimum Number of RLC Retransmissions for Best TCP Performance in UTRAN",

abstract = "As far as transfer reliability is concerned, the wireless segment of UTRAN is the weakest part of an Internet session. To overcome this imperfection, the RLC protocol features a link-level retransmission mechanism. In this paper, we show by analytical means and computer simulations that for a given Block Error Rate (BLER), the maximum number of RLC transmissions has a very important impact on TCP performance, both Round Trip Time and throughput. We extend existing models to be able to set a maximum number of RLC transmissions, and we determine the corresponding throughput analytically. We also show that, knowing the current BLER, a network operator may tune the maximum number of retransmissions either to reduce the RTT or to increase the throughput.",

author = "{De Mey}, Olivier and Laurent Schumacher and Xavier Dubois",

year = "2005",

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language = "English",

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booktitle = "2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications",

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T1 - Optimum Number of RLC Retransmissions for Best TCP Performance in UTRAN

AU - De Mey, Olivier

AU - Schumacher, Laurent

AU - Dubois, Xavier

PY - 2005

Y1 - 2005

N2 - As far as transfer reliability is concerned, the wireless segment of UTRAN is the weakest part of an Internet session. To overcome this imperfection, the RLC protocol features a link-level retransmission mechanism. In this paper, we show by analytical means and computer simulations that for a given Block Error Rate (BLER), the maximum number of RLC transmissions has a very important impact on TCP performance, both Round Trip Time and throughput. We extend existing models to be able to set a maximum number of RLC transmissions, and we determine the corresponding throughput analytically. We also show that, knowing the current BLER, a network operator may tune the maximum number of retransmissions either to reduce the RTT or to increase the throughput.

AB - As far as transfer reliability is concerned, the wireless segment of UTRAN is the weakest part of an Internet session. To overcome this imperfection, the RLC protocol features a link-level retransmission mechanism. In this paper, we show by analytical means and computer simulations that for a given Block Error Rate (BLER), the maximum number of RLC transmissions has a very important impact on TCP performance, both Round Trip Time and throughput. We extend existing models to be able to set a maximum number of RLC transmissions, and we determine the corresponding throughput analytically. We also show that, knowing the current BLER, a network operator may tune the maximum number of retransmissions either to reduce the RTT or to increase the throughput.

U2 - 10.1109/PIMRC.2005.1651703

DO - 10.1109/PIMRC.2005.1651703

M3 - Conference contribution

SN - 978-3-8007-2909-8

BT - 2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications

PB - IEEE

ER -

Optimum Number of RLC Retransmissions for Best TCP Performance in UTRAN

Abstract

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