Change search
ReferencesLink to record
Permanent link

Direct link
On the TCP minimum retransmission timeout in a high-speed cellular network
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Computer Science.
2005 (English)In: Proceedings of the Eleventh European Wireless Conference, 2005Conference paper (Refereed)
Abstract [en]

HS-DSCH is a high-speed shared radio channel extension for WCDMA which is used for cellular mobile telephony. The algorithm for distributing the channel resources together with the characteristics of the radio medium result in delay variations. The TCP minimum retransmission timeout interval has effectively alleviated delay variations in its range from deteriorating TCP performance. But recently, this bound has been shortened in modern widely spread TCP implementations. The aim of our study is to find out how a shorter minimum retransmission timeout affects TCP performance over HS-DSCH. We have implemented a model of HS-DSCH in the network simulator ns-2. Our simulations cover a wide range of different minimum retransmission timeout settings and loads, two types of schedulers (Round-Robin and Signalto-Interference-Ratio (SIR) scheduling) and two versions of TCP (SACK and NewReno). Our results show that the number of spurious timeouts increase with the load. The SIR scheduler causes fewer spurious timeouts than the RR scheduler for shorter minimum retransmission timeout settings, however, for longer settings the RR scheduler causes fewer spurious timeouts compared to the SIR scheduler. The minimum retransmission timeout has consequences for goodput fairness, but it does not affect the total system throughput. Both TCP versions produced similar results.

Place, publisher, year, edition, pages
Research subject
Dependable Communication and Computation Systems
URN: urn:nbn:se:ltu:diva-38667Local ID: d1e5e9c0-95d5-11db-8975-000ea68e967bOAI: diva2:1012168
European Wireless Conference : 10/04/2005 - 13/04/2005
Godkänd; 2005; 20061227 (ysko)Available from: 2016-10-03 Created: 2016-10-03Bibliographically approved

Open Access in DiVA

fulltext(93 kB)0 downloads
File information
File name FULLTEXT01.pdfFile size 93 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Folke, MatsLandström, SaraBodin, Ulf
By organisation
Computer Science

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

ReferencesLink to record
Permanent link

Direct link