8/19/2019 HSDPA Throughput counter

1/2

HSDPA Throughput

Contents

6.4.1.8.5 HSDPA Throughput

6.4.1.8.5 HSDPA Throughput

Table 1 Mean Throughput for One HSDPA User 

Name Mean Throughput for One HSDPA User 

Description This counter indicates the mean downlink throughput for ONE HSDPA UE in a cell.

When the data is transferred to an HSDPA serving cell, the RNC measures the datatransfer time of all the UEs and the total bytes sent in the cell. At the end of the

measurement period, the RNC divides the total bytes by the total data transfer time

to obtain the mean downlink throughput of MAC-d flow in the cell. The RLC header

and the retransmitted data are excluded.

Associated

Counters

Mean Throughput for One HSDPA User =

VS.HSDPA.MeanChThroughput

Object CELL

Unit/Range kbit/s

Note For 3900 series NodeBs, it is recommended that you use the NodeB counters in the

following formula to calculate the single user throughput. These NodeB counters

measure the valid throughput when data exists in the user buffer every transmission

time interval (TTI). In this case, the value of this KPI is more accurate for UEs. The

throughput of a single user at the NodeB MAC-hs layer is calculated using the

following formula:

VS.HSDPA.DataOutput.Traffic/

(VS.HSDPA.DataTtiNum.User  x 2)

NOTE:

VS.HSDPA.DataOutput.Traffic measures the total traffic volume of the MAC-

hs/MAC-ehs PDUs with ACKs from all users in a TTI within a measurement period.

(Unit : bit).

VS.HSDPA.DataTtiNum.User  measures the total number of user-level TTIs (TTI =

2ms) within which there is data to transmit in HSDPA user queue buffers within a

measurement period. (VS.HSDPA.DataTtiNum.User  x 2) and converts the number

of TTIs to the data transmission time.

Table 2 Mean Throughput for One HSDPA Cell

Name Mean Throughput for One HSDPA Cell

8/19/2019 HSDPA Throughput counter

2/2

Description This counter provides the MAC-hs throughput when at least one HSDPA user is

transferring data at the physical layer during the entire measurement period.

Associated

Counters

Mean Throughput for One HSDPA Cell =

VS.DataOutput.Mean/(VS.DataTtiRatio.Mean -

VS.HSDPA.InactiveDataTtiRatio.Mean)

Object NodeB

Unit/Range kbit/s

Note 1. We can apply the following formula to get the Mean HSDPA Cell

Throughput within RNC approximately:

HSDPA Cell Throughput (RNC Cell) =

VS.HSDPA.MeanChThroughput.TotalBytes  x 8/ [{SP} x 60]/1000

Where:

• {SP} is the Statistic Period with the unit of Minute.

• The KPI may not be accurate under the following condition:

there is no HSDPA User transferring data for a while during

the total measurement period. Therefore, the KPI should be

evaluated during busy hour for accuracy.

2. For 3900 series NodeBs, the HSDPA throughput at the MAC-hs layer is

calculated using the following formula:

VS.HSDPA.DataOutput.Traffic/

[(VS.DataTtiRatio.Mean  -

VS.HSDPA.InactiveDataTtiRatio.Mean) x {SP} x 60]

Parent topic: Service Integrity