f the dimensioning factor, which is calculated as the dimensioned lub bandwidth divided by the total HSUPA traffic demands of all UEs in the cell, and it indicates the amount of bandwidth required for satisfying QoS requirement as a ratio of the offered traffic load. By comparing the COV of cell throughput given in Figure A.17 with Figure A.18, we can conclude that the dimensioning factor is directly related to the traffic bursty property: a more busty traffic requires relatively higher extra bandwidth on the lub link for satisfying the same QoS requirements than the traffic with less burstiness. Since with less number of UEs or having lower demand traffic model results in a more bursty traffic characteristic as presented in Figure A.17, hence more additional bandwidth in terms of higher proportion of the offered traffic demand is needed. Figure A.19 illustrates the obtained lub link utilization calculated as the average lub link throughput as a percentage of the lub link rate. It shows that with the increased number of UEs or larger per user load of the traffic model, the aggregated average lub link throughput is larger and moreover less bursty which also needs less extra bandwidth, and as a result a higher link utilization. dimensioning factor = lub BW / HSUPA UTRAN traffic demand 1M 15s 3GPP FTP 100K 15s 50K 15s 10K 15s Number of UEs Figure A.18: Dimensioning factor A.15 Dimensioning for HSPA Traffic lub Link Utilization 1M 15s 3GPP FTP 100K 15s 50K 15s 10K 15s Number of UEs Figure A. .19: lub link utilization Dimensioning over Different QoS Targets This part discusses the lub dimensioning over user QoS requirements. Figure A.20 presents the dimensioning factor as a function of the desired user application throughput as the QoS target. It is represented by the normalized average application throughput of all users in the cell, which is calculated as the achieved application throughput under certain limited lub link bandwidth as a percentage of the maximum application throughput achieved with sufficient link ba