TY - GEN
T1 - Impact of the transport network congestion control on the HSUPA performance
AU - Weerawardane, Thushara
AU - Zaki, Yasir
AU - Timm-Giel, Andreas
AU - Malafronte, Gennaro C.
AU - Hauth, Stephan
AU - Görg, Carmelita
PY - 2009
Y1 - 2009
N2 - High Speed Uplink Packet Access (HSUPA) is an extension of the Universal Mobile Telecommunications System (UMTS) technology of 3GPP Rel-99, with the objective increasing the data rate (up to 5.76 Mbps) and reducing the latency of the uplink. 3GPP UMTS standard Rel-6 introduces a new "Enhanced Dedicated Channel" (EDCH) for the uplink. The main focus of the work presented in this paper is to analyse the effect of TNL congestion control on the HSUPA performance. The congestion control function works together with the scheduler and HARQ functionality in order to control the offered load to the TNL network. In this manner, the data flow over the transport network (TNL) is adequately controlled and limited to the available TNL capacity by avoiding congestion in the transport network. The TNL congestion control consists of two independent parts: congestion detection and congestion control which have been implemented, tested and validated within the focus of this paper. The simulation results presented in this paper confirm that the congestion in the transport network can be controlled in such a way that the available TNL capacity can be effectively utilised and hence the performance of HSUPA network can be significantly improved in all aspects.
AB - High Speed Uplink Packet Access (HSUPA) is an extension of the Universal Mobile Telecommunications System (UMTS) technology of 3GPP Rel-99, with the objective increasing the data rate (up to 5.76 Mbps) and reducing the latency of the uplink. 3GPP UMTS standard Rel-6 introduces a new "Enhanced Dedicated Channel" (EDCH) for the uplink. The main focus of the work presented in this paper is to analyse the effect of TNL congestion control on the HSUPA performance. The congestion control function works together with the scheduler and HARQ functionality in order to control the offered load to the TNL network. In this manner, the data flow over the transport network (TNL) is adequately controlled and limited to the available TNL capacity by avoiding congestion in the transport network. The TNL congestion control consists of two independent parts: congestion detection and congestion control which have been implemented, tested and validated within the focus of this paper. The simulation results presented in this paper confirm that the congestion in the transport network can be controlled in such a way that the available TNL capacity can be effectively utilised and hence the performance of HSUPA network can be significantly improved in all aspects.
KW - Congestion control
KW - Congestion detection
KW - HSUPA
UR - http://www.scopus.com/inward/record.url?scp=70349659929&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70349659929&partnerID=8YFLogxK
U2 - 10.1109/VETECS.2009.5073586
DO - 10.1109/VETECS.2009.5073586
M3 - Conference contribution
AN - SCOPUS:70349659929
SN - 9781424425174
T3 - IEEE Vehicular Technology Conference
BT - VTC Spring 2009 - IEEE 69th Vehicular Technology Conference
T2 - VTC Spring 2009 - IEEE 69th Vehicular Technology Conference
Y2 - 26 April 2009 through 29 April 2009
ER -