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  4. Preventive and reactive based TNL congestion control impact on the HSDPA performance
 
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Preventive and reactive based TNL congestion control impact on the HSDPA performance

Publikationstyp
Conference Paper
Date Issued
2008-05
Sprache
English
Author(s)
Weerawardane, Thushara  
Timm-Giel, Andreas  orcid-logo
Malafronte, Gennaro Ciro  
Durastante, Gianluca  
Hauth, Stephan  
Görg, Carmelita  
TORE-URI
http://hdl.handle.net/11420/12160
Start Page
2296
End Page
2300
Article Number
4526066
Citation
IEEE 67th Vehicular Technology Conference, VTC Spring 2008: 4526066, 2296-2300 (2008-07-28)
Contribution to Conference
IEEE 67th Vehicular Technology Conference, VTC Spring 2008  
Publisher DOI
10.1109/VETECS.2008.510
Scopus ID
2-s2.0-47749144394
Publisher
IEEE
High Speed Downlink Packet Access (HSDPA) is an extension of the Universal Mobile Telecommunications System (UMTS) technology of 3GPP Rel-99, with the objective to increase the data rate and reduce the latency in the downlink. The main focus of the work presented is to analyse the effect of congestion at the Iub interface on the HSDPA performance. The data flows should be adequately controlled in order to avoid congestion in the transport network. The 3GPP (3rd Generation Partnership Project) ReI. 5 specifications highlight two congestion detection mechanisms which are based on the frame sequence number (FSN) and the Delay Reference Time (DRT) fields of HSDPA data frame. In addition to these, a third congestion detection mechanism based of Checksum of HSDPA data frame is considered. This paper discusses a congestion control scheme deploying all three congestion detection methods. It is shown, that a congestion control algorithm can effectively work using these congestion detection triggers and can control the offered load to the transport network. The simulation results presented in this paper confirm that the congestion in the transport network can be avoided, and hence the performance of HSDPA network can be significantly improved in all aspects.
Subjects
Congestion control
Congestion detection
HSDPA
DDC Class
004: Informatik
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