IUB Bandwidth Utilizing Ratio (for Downlink)

IUB Bandwidth Utilizing Ratio

This KPI is used to check the ratio of consumption of Iub bandwidth and configured Iub bandwidth in a NodeB for downlink during busy hours. The consumption of interactive and background services cannot maintain the full rate all the time on the configured Iub bandwidth.

The DL Bandwidth could be measured on ATM Physical Ports or IP physical Ports. The numerator is defined as the average used bandwidth on an ATM or IP physical ports during a measurement period counted by NodeB. The NodeB measures the used DL bandwidth on the physical port every five seconds for 15 minutes and then calculates the average value. The counter and the physical port have one-to-one relation, and they are all used for traffic measurement at the physical layer.

We have counter for both ATM and IP:

IUB Bandwidth Utilizing Ratio (ATM_DL) =

[(VS.ATMDIAvgUsed.1+

VS.ATMDLAvgUsed.2+

VS.ATMDLAvgUsed.3+

VS.ATMDLAvgUsed.4)/

(VS.ATMDLTotal.1+

VS.ATMDLTotal.2+

VS.ATMDLTotal.3+

VS.ATMDLTotal.4)] x 100%

IUB Bandwidth Utilizing Ratio (IP_DL) =

[(VS.IPDLAvgUsed.1+

VS.IPDLAvgUsed.2+

VS.IPDLAvgUsed.3+

VS.IPDLAvgUsed.4)/

(VS.IPDLTotal.1+

VS.IPDLTotal.2+

VS.IPDLTotal.3+

VS.IPDLTotal.4)] x 100%

NB: Please select Object Type as NodeB