5 WCDMA RAN Traffic Counters and KPI Introduction RAN10

WCDMA RAN Traffic Counters and KPI Introduction RAN10

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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.

WCDMA RAN TrafficCounters and KPI



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Page1Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.

Objectives Upon completion of this course, you will be able to:

Describe traffic counter system

Know the traffic KPI



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Contents1. RNC Traffic Counters

2. Cell Traffic Counter

3. Cell Load Counter



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RNC Traffic Counters System In RNC, the counters related to traffic can be divided into:

RNC Total Traffic

Service Traffic



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RNC Traffic Counters System RNC Total Traffic in CS domain

Equivalent Erlang of CS Domain in RNC VS.CSLoad.Erlang.Equiv.RNC

Maximum Equivalent Erlang of CS Domain in RNC VS.CSLoad.MaxErlang.Equiv.RNC

VS.CSLoad.Erlang.Equiv.RNC This measurement item provides the equivalent Erlang values of all the

services in the CS domain in the RNC. The RNC periodically takes the samples from the equivalent Erlang values of

all the services in the CS domain. At the end of the measurement period, the RNC divides the accumulated equivalent Erlang values by the number of samples to obtain the mean equivalent Erlang values of all the services in the CS domain. Each time a CS domain service is established, the RNC converts its rate to the equivalent Erlang, and then increases the equivalent Erlang of the CS domain in the current RNC. Each time a CS domain service is released, the RNC converts its rate to the equivalent Erlang and decreases the equivalent Erlang of the CS domain in the current RNC.

Unit: Erlang. VS.CSLoad.MaxErlang.Equiv.RNC

This measurement item provides the maximum equivalent Erlang values of all the services in the CS domain within the RNC.

The RNC periodically takes a sample from the equivalent Erlang values of all the services in the CS domain. At the end of the period, the RNC calculates the maximum equivalent Erlang of all the services in the CS domain within the RNC. Each time a CS domain service is established, the RNC converts its rate to the equivalent Erlang, and then increases the equivalent Erlang of the CS domain in the current RNC. Each time a CS domain service is released, the RNC decreases the equivalent Erlang of the CS domain in the current RNC.

Unit: Erlang.



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RNC Traffic Counters System RNC Total Traffic in uplink PS domain

UL Traffic of R99 PS Domain in RNC VS.R99PSLoad.ULThruput.RNC

Maximum UL Traffic of R99 PS Domain in RNC VS.R99PSLoad.MaxULThruput.RNC

UL Traffic of HSUPA PS Domain in RNC VS.HSUPAPSLoad.ULThruput.RNC

Maximum UL Traffic of HSUPA PS Domain in RNC VS.HSUPAPSLoad.MaxULThruput.RNC

VS.R99PSLoad.ULThruput.RNC This measurement item provides the uplink traffic of all the R99 services in the

PS domain within the RNC. VS.R99PSLoad.MaxULThruput.RNC

This measurement item provides the maximum uplink traffic of all the R99 services in the PS domain within the RNC.

VS.HSUPAPSLoad.ULThruput.RNC This measurement item provides the uplink traffic of all the HSUPA services in

the PS domain within the RNC. VS.HSUPAPSLoad.MaxULThruput.RNC

This measurement item provides the maximum uplink traffic of all the HSUPA services in the PS domain within the RNC.

Unit: kbit/s.



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RNC Traffic Counters System RNC Total Traffic in Downlink PS Domain

DL Traffic of R99 PS Domain in RNC VS.R99PSLoad.DLThruput.RNC

Maximum DL Traffic of R99 PS Domain in RNC VS.R99PSLoad.MaxDLThruput.RNC

DL Traffic of HSDPA PS Domain in RNC VS.HSDPAPSLoad.DLThruput.RNC

Maximum DL Traffic of HSDPA PS Domain in RNC VS.HSDPAPSLoad.MaxDLThruput.RNC

VS.R99PSLoad.DLThruput.RNC This measurement item provides the downlink traffic of all the R99 services in

the PS domain within the RNC. VS.R99PSLoad.MaxDLThruput.RNC

This measurement item provides the maximum downlink traffic of all the R99 services in the PS domain within the RNC.

VS.HSDPAPSLoad.DLThruput.RNC This measurement item provides the downlink traffic of all the HSDPA

services in the PS domain within the RNC. VS.HSDPAPSLoad.MaxDLThruput.RNC

This measurement item provides the maximum downlink traffic of all the HSDPA services in the PS domain within the RNC.

Unit: kbit/s



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RNC Traffic Counters System AMR Service Traffic

Mean number of AMR speech UEs VS.AMR.RB.UL.4.75 VS.AMR.RB.DL.4.75

VS.AMR.RB.UL.5.15 VS.AMR.RB.DL.5.15







The measurement items provide the mean number of UEs that use the AMR speech services at different bit rates in both uplink and downlink directions in the RNC.

The RNC periodically takes a sample from the number of AMR speech UEs at each of the eight UL and DL bit rates. At the end of the measurement period, the RNC divides the accumulated number by the number of samples to obtain the mean number of AMR speech UEs at each rate.



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RNC Traffic Counters System VP Service Traffic

Mean number of 64 kbit/s conversational service RBs in CS domain

VS.RB.DLConvCS.64.RNC

VS.RB.ULConvCS.64.RNC

The measurement items provide the mean number of 64 kbit/s conversational service RBs in the CS domain in the UL and DL directions.

The RNC periodically takes a sample from the number of 64 kbit/s conversational service RBs in the CS domain in the UL and DL directions. At the end of themeasurement period, the RNC divides the accumulated number of RBs at one bit rate by the number of samples to obtain the mean number of such RBs.



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RNC Traffic Counters System PS Streaming Service Traffic

Mean number of streaming service RBs in PS Domain at different bit rates

VS.RB.ULStrPS.256.RNC VS.RB.DLStrPS.256.RNC







The measurement items provide the mean number of streaming service RBs in the PS domain according to different UL and DL bit rates.

The RNC periodically takes a sample from the number of RBs in the PS domain at each of the seven UL and DL rates of the streaming service. At the end of the measurement period, the RNC divides the accumulated number of RBs at each bit rate by the number of samples to obtain the mean number of such RBs.



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RNC Traffic Counters System PS Interactive Service Traffic

Mean number of interactive service RBs in PS domain at different bit rates

VS.RB.ULInterPS.384.RNC VS.RB.DLInterPS.384.RNC








The measurement items provide the mean number of interactive service RBs in the PS domain according to different UL and DL bit rates.

The RNC periodically takes a sample from the number of RBs in the PS domain at each of the seven UL and DL rates of the interactive service. At the end of the measurement period, the RNC divides the accumulated number of RBs at each bit rate by the number of samples to obtain the mean number of such RBs.



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RNC Traffic Counters System PS Background Service Traffic

Mean number of background service RBs in PS domain at different bit rates

VS.RB.ULBkgPS.384.RNC VS.RB.DLBkgPS.384.RNC VS.RB.ULBkgPS.256.RNC VS.RB.DLBkgPS.256.RNC VS.RB.ULBkgPS.144.RNC VS.RB.DLBkgPS.144.RNC VS.RB.ULBkgPS.128.RNC VS.RB.DLBkgPS.128.RNC VS.RB.ULBkgPS.64.RNC VS.RB.DLBkgPS.64.RNC VS.RB.ULBkgPS.32.RNC VS.RB.DLBkgPS.32.RNC VS.RB.ULBkgPS.16.RNC VS.RB.DLBkgPS.16.RNC VS.RB.ULBkgPS.8.RNC VS.RB.DLBkgPS.8.RNC

The measurement items provide the mean number of background service RBs in the PS domain according to different UL and DL bit rates.

The RNC periodically takes a sample from the number of RBs in the PS domain at each of the seven UL and DL rates of the background service. At the end of the measurement period, the RNC divides the accumulated number of RBs at each bit rate by the number of samples to obtain the mean number of such RBs.



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Cell Traffic Counters System In cell level, the counters related to traffic can be divided

into:

CELL total traffic

CELL R99 service traffic

CELL HSDPA service traffic



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Cell Total Traffic The measurement value can be based on:

Common channel FACH, RACH,PCH

Dedicate channel

This traffic measurement is for Iub interface

These value are total traffic throughput on Iub Interface

The unit is Byte



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Cell Common Channel Traffic Volume Traffic Volume on IUB_FACH (Cell)

VS.MAC.CRNCIubBytesFACH.TX

CRNC_Iub FACH Bandwidth (Cell) VS.CRNC.IUB.FACH.Bandwidth

FACH Utility Ratio = VS.MAC.CRNCIubBytesFACH.Tx / (3600*VS.CRNC.IUB.FACH.Bandwidth)

The FACH Utility Ratio should be calculated based on one busy hour. VS.MAC.CRNCIubBytesFACH.TX

This measurement item provides the number of DL MAC PDU bytes sent by the CRNC on the FACH FP over the Iub interface in a cell.

The measurement is triggered when the CRNC sends DL data on the FACH FP over the Iub interface.

VS.CRNC.IUB.FACH.Bandwidth The measurement items provide the FACH bandwidth on the Iub interface in a

cell. The measurement is triggered when the CRNC sets up or deletes a FACH on

the Iub interface.



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Cell Common Channel Traffic Volume Traffic Volume on IUB_RACH (Cell)

VS.MAC.CRNCIubBytesRACH.TX

CRNC_Iub RACH Bandwidth (Cell) VS.CRNC.IUB.RACH.Bandwidth

RACH Utility Ratio = VS.MAC.CRNCIubBytesRACH.Tx / (3600*VS.CRNC.IUB.RACH.Bandwidth)

The RACH Utility Ratio should be calculated based on one busy hour. VS.MAC.CRNCIubBytesRACH.TX

This measurement item provides the number of DL MAC PDU bytes sent by the CRNC on the RACH FP over the Iub interface in a cell.

The measurement is triggered when the CRNC sends DL data on the RACH FP over the Iub interface.

VS.CRNC.IUB.RACH.Bandwidth The measurement items provide the RACH bandwidth on the Iub interface in a

cell. The measurement is triggered when the CRNC sets up or deletes a RACH on

the Iub interface.



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Cell Common Channel Traffic Volume Traffic Volume on PCH of Iub Interface (Cell)

VS.MAC.CRNCIubBytesPCH.TX

CRNC_Iub PCH Bandwidth (Cell) VS.CRNC.IUB.PCH.Bandwidth

PCH Utility Ratio = VS.MAC.CRNCIubBytesPCH.Tx / (3600*VS.CRNC.IUB.PCH.Bandwidth)

The PCH Utility Ratio should be calculated based on one busy hour. Different LAC would generate different PCH Utility Ratio. For the cell in the same LAC, the PCH Utility Ratio would be the same theoretically.

The basic principles for the PCH utilization are: 1. The PCH Utility Ratio should not exceed 40% 2. The PCH Utility Ratio are balance between different LACs.

If 1) is not met, LAC splitting is suggested. If 2) is not met, it is recommended to re-plan the LAC.

VS.MAC.CRNCIubBytesPCH.TX This measurement item provides the number of DL MAC PDU bytes received

by the CRNC on the PCH FP over the Iub interface. These bytes include paging data transport blocks and paging indication (PI) data.

The measurement is triggered when the CRNC sends DL data on the PCH FP over the Iub interface.

VS.CRNC.IUB.PCH.Bandwidth The measurement items provide the PCH bandwidth on the Iub interface in a

cell. The measurement is triggered when the CRNC sets up or deletes a common

channel on the Iub interface.



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Measurement value for different services on Iub interface UL CS Conversational Traffic Volume on Iub Interface (Cell)

VS.MAC.SRNCIubBytesCSConv.Rx

UL CS Streaming Traffic Volume on Iub Interface (Cell) VS.MAC.SRNCIubBytesCSStr.Rx

DL CS Conversational Traffic Volume on Iub Interface (Cell) VS.MAC.SRNCIubBytesCSConv.Tx

DL CS Streaming Traffic Volume on Iub Interface (Cell) VS.MAC.SRNCIubBytesCSStr.Tx

Cell CS Service Traffic Volume

VS.MAC.SRNCIubBytesCSConv.Rx This measurement item provides the number of UL MAC PDU bytes sent by

the SRNC to the MAC-d on the CS conversational service bearer (DCH FP) over the Iub interface in a cell.

The measurement is triggered when the SRNC sends UL data on the CS conversational service bearer DCH FP over the Iub interface in a cell.

VS.MAC.SRNCIubBytesCSStr.Rx This measurement item provides the number of UL MAC PDU bytes sent by

the SRNC to the MAC-d on the CS streaming service bearer (DCH FP) over the Iub interface in a cell.

The measurement is triggered when the SRNC sends UL data on the CS streaming service bearer DCH FP over the Iub interface.

VS.MAC.SRNCIubBytesCSConv.Tx This measurement item provides the number of DL MAC PDU bytes sent by

the SRNC on the CS conversational service bearer DCH FP over the Iubinterface in a cell.

The measurement is triggered when the SRNC sends DL data on the CS conversational service bearer DCH FP over the Iub interface.

VS.MAC.SRNCIubBytesCSStr.Tx This measurement item provides the number of DL MAC PDU bytes sent by

the SRNC on the CS streaming service bearer DCH FP over the Iub interface in a cell.

The measurement is triggered when the SRNC sends DL data on the CS streaming service bearer DCH FP over the Iub interface in a cell.



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Measurement value for different services on Iub interface

UL PS Conversational Traffic Volume on Iub Interface (Cell) VS.MAC.SRNCIubBytesPSConv.Rx

UL PS Streaming Traffic Volume on Iub Interface (Cell) VS.MAC.SRNCIubBytesPSStr.Rx

UL PS Interactive Traffic Volume on Iub Interface (Cell) VS.MAC.SRNCIubBytesPSInt.Rx

UL PS Background Traffic Volume on Iub Interface (Cell) VS.MAC.SRNCIubBytesPSBkg.Rx

Cell PS Service Traffic Volume

VS.MAC.SRNCIubBytesPSConv.Rx This measurement item provides the number of UL MAC PDU bytes sent by

the SRNC to the MAC-d on the PS conversational service bearer (DCH FP) over the Iub interface in a cell.

The measurement is triggered when the SRNC sends DL data on the PS conversational service bearer DCH FP over the Iub interface in a cell.

VS.MAC.SRNCIubBytesPSStr.Rx This measurement item provides the number of UL MAC PDU bytes sent by

the SRNC to the MAC-d on the PS streaming service bearer (DCH FP) over the Iub interface in a cell.

The measurement is triggered when the SRNC sends UL data on the PS streaming service bearer DCH FP over the Iub interface in a cell.

VS.MAC.SRNCIubBytesPSInt.Rx This measurement item provides the number of UL MAC PDU bytes sent by

the SRNC to the MAC-d on the PS interactive service bearer (DCH FP) over the Iub interface in a cell.

The measurement is triggered when the SRNC sends UL data on the PS interactive service bearer DCH FP over the Iub interface in a cell.

VS.MAC.SRNCIubBytesPSBkg.Rx This measurement item provides the number of UL MAC PDU bytes sent by

the SRNC to the MAC-d on the PS background service bearer (DCH FP) over the Iub interface in a cell.

The measurement is triggered when the SRNC sends UL data on the PS background service bearer DCH FP over the Iub interface in a cell.



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Cell PS Service Traffic Volume Measurement value for different services on Iub interface

DL PS Conversational Traffic Volume on Iub Interface (Cell) VS.MAC.SRNCIubBytesPSConv.Tx

DL PS Streaming Traffic Volume on Iub Interface (Cell) VS.MAC.SRNCIubBytesPSStr.Tx

DL PS Interactive Traffic Volume on Iub Interface (Cell) VS.MAC.SRNCIubBytesPSInt.Tx

DL PS Background Traffic Volume on Iub Interface (Cell) VS.MAC.SRNCIubBytesPSBkg.Tx

VS.MAC.SRNCIubBytesPSConv.Tx

This measurement item provides the number of DL MAC PDU bytes sent by the SRNC on the PS conversational service bearer DCH FP over the Iub interface in a cell.

The measurement is triggered when the SRNC sends DL data on the PS conversational service bearer DCH FP over the Iub interface in a cell.

VS.MAC.SRNCIubBytesPSStr.Tx This measurement item provides the number of DL MAC PDU bytes sent by the SRNC

on the PS streaming service bearer DCH FP over the Iub interface in a cell. The measurement is triggered when the SRNC sends DL data on the PS streaming

service bearer DCH FP over the Iub interface in a cell.

VS.MAC.SRNCIubBytesPSInt.Tx

This measurement item provides the number of DL MAC PDU bytes sent by the SRNC on the PS interactive service bearer DCH FP over the Iub interface in a cell.

The measurement is triggered when the SRNC sends DL data on the PS interactive service bearer DCH FP over the Iub interface in a cell.

VS.MAC.SRNCIubBytesPSBkg.Tx

This measurement item provides the number of bytes of the DL MAC PDU sent by the SRNC on the PS background service bearer DCH FP over the Iub interface in a cell.

The measurement is triggered when the SRNC sends DL data on the PS background service bearer DCH FP over the Iub interface in a cell.



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Cell AMR Service Traffic Mean Number of AMR Speech UEs at Different UL and DL Bit

Rates (Cell) VS.AMR.Ctrl.UL4.75 VS.AMR.Ctrl.DL4.75 VS.AMR.Ctrl.UL5.15 VS.AMR.Ctrl.DL5.15 VS.AMR.Ctrl.UL5.9 VS.AMR.Ctrl.DL5.9 VS.AMR.Ctrl.UL6.7 VS.AMR.Ctrl.DL6.7 VS.AMR.Ctrl.UL7.4 VS.AMR.Ctrl.DL7.4 VS.AMR.Ctrl.UL7.95 VS.AMR.Ctrl.DL7.95 VS.AMR.Ctrl.UL10.2 VS.AMR.Ctrl.DL10.2 VS.AMR.Ctrl.UL12.2 VS.AMR.Ctrl.DL12.2

The measurement items provide the mean number of UEs that use the AMR speech service at different UL and DL bit rates in the cell.

The RNC periodically takes a sample from the number of UEs that use the AMR speech service at the eight different UL and DL rates in the cell. At the end of the measurement period, the RNC divides the accumulated number by the number of samples to obtain the mean number of UEs that use the AMR speech service at each bit rate.



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Average Numbers of CS RBs with Different Bit Rates (Cell) VS.RB.ULConvCS.64

VS.RB.DLConvCS.64

Cell VP Service Traffic

VS.RB.ULConvCS.64 This measurement item provides the mean number of CS conversational

service RBs at the downlink bit rate of 64 kbit/s in a cell, that is, the mean number of uplink and downlink RBs obtained at the sampling points in the cell in the measurement period.

The RNC periodically takes a sample from the number of CS conversational service RBs at the DL bit rate of 64 kbit/s. At the end of the measurement period, the RNC divides the accumulated number of conversational service RBs at the DL bit rate of 64 kbit/s by the number of samples to obtain the mean number of CS conversational service RBs. In this case, the RNC measures an item in each cell that the UE camps on.

VS.RB.DLConvCS.64 The measurement items provide the mean number of CS conversational

service RBs at the downlink bit rate of 64 kbit/s in a cell, that is, the mean number of uplink and downlink RBs obtained at the sampling points in the cell in the measurement period,

The RNC periodically takes a sample from the number of CS conversational service RBs at different bit rates. At the end of the measurement period, the RNC divides the accumulated number of conversational service RBs at each bit rate by the number of samples to obtain the mean number of CS conversational service RBs. In this case, the RNC measures the item in each cell that the UE camps on.



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Cell PS Service Traffic Mean Number of PS Service RBs at Different UL and DL Bit

Rates (Cell) VS.RB.ULStrPS.DifferentServiceRate

VS.RB.ULInterPS.DifferentServiceRate

VS.RB.ULBkgPS.DifferentServiceRate

VS.RB.DLStrPS.DifferentServiceRate

VS.RB.DLInterPS.DifferentServiceRate

VS.RB.DLBkgPS.DifferentServiceRate

The measurement items provide the mean number of PS streaming/interactive/background service R99 RBs at the different bit rates in a cell, that is, the mean number of R99 RBs obtained at the sampling points in the cell in the measurement period.

The RNC periodically takes a sample from the number of PS streaming service RBsat different bit rates. At the end of the measurement period, the RNC divides the accumulated number of PS streaming service RBs at different bit rates by the number of samples to obtain the mean number of the PS streaming service RBs. In this case, the RNC measures the item in the specified cell.

Different service rates are 8, 16, 32, 64, 128, 144, 256, 384, for example: VS.RB.ULStrPS.8 VS.RB.DLStrPS.8 VS.RB.ULInterPS.384 VS.RB.DLInterPS.384 VS.RB.ULBkgPS.384 VS.RB.DLBkgPS.384 Etc.



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Mean Number of HSDPA UEs in a Cell VS.HSDPA.UE.Mean.Cell

Mean Number of MAC-d Flows (Cell) VS.HSDPA.MACD.Mean.Cell

Cell HSDPA Traffic

VS.HSDPA.UE.Mean.Cell This measurement item provides the mean number of HSDPA UEs in a

serving cell. The value of this unit is lower than or equal to that of the VS.CellDCHUEs measurement.

The RNC periodically takes a sample from the number of HSDPA UEs in the cell. At the end of the measurement period, the RNC divides the accumulated number of UEs by the number of samples to obtain the mean number of HSDPA UEs in the measurement period.

VS.HSDPA.MACD.Mean.Cell This measurement item provides the mean number of MAC-d flows in a cell. In an HSDPA service cell, the system periodically takes a sample of the

number of MAC-D flows. At the end of the measurement period, the accumulated value of the data at all sampling points is divided by the number of samples to obtain the mean number of MAC-d flows in the measurement period.



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Cell HSDPA Traffic Mean Downlink Throughput of MAC-d Flow (Cell)

VS.HSDPA.MeanChThroughput

Number of Transmitted Downlink Bytes in MAC-d Flow (Cell) VS.HSDPA.MeanChThroughput.TotalBytes

VS.HSDPA.MeanChThroughput This measurement item provides the mean downlink throughput of MAC-d flow

in a cell. When data is transmitted in an HSDPA cell, the RNC measures the total data

transfer time of the UE and the total number of bits in the received data in the cell. At the end of the measurement period, the RNC divides the total number of bits by the total data transfer time to obtain the mean downlink throughput of MAC-d flow in the cell. The RLC header overhead and the retransfer data are excluded.

VS.HSDPA.MeanChThroughput.TotalBytes

This measurement item provides the number of bytes in the transmitted downlink data in the MAC-d flow in a cell.

When data is transmitted in an HSDPA cell, the RNC measures the total number of bytes in the transmitted downlink data at the RLC layer for the MAC-d flow in the cell. The RLC header overheand and the retransfer data are excluded.



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Mean Number of HSUPA UEs in a Cell VS.HSUPA.UE.Mean.Cell

Mean Uplink Throughput of Mac-d flows (Cell) VS.HSUPA.MeanChThroughput

Number of Bytes in Received Uplink Data at the RLC Layer of Mac-d flow (Cell) VS.HSUPA.MeanChThroughput.TotalBytes

Cell HSUPA Traffic

VS.HSUPA.UE.Mean.Cell This measurement item provides the mean number of HSUPA UEs in a cell,

which is measured in E-DCH active set. The measurement does not contain the HSUPA UEs under the DRNC.

The RNC periodically takes a sample from the number of HSUPA UEs in the cell. At the end of the measurement period, the RNC divides the accumulated number of UEs by the number of samples to obtain the mean number of HSUPA UEs in the measurement period.

VS.HSUPA.MeanChThroughput This measurement item provides the mean UL throughput of MAC-d flow in a

cell. When data is received in an HSUPA active cell, the RNC measures the actual

data transfer time of the UE and the number of bits in the received data. At the end of the measurement period, the RNC divides the total number of bits by the actual data transfer time of the UE to obtain the mean UL throughput of the RLC layer for the MAC-d flow in the cell. The RLC header overhead and the retransfer data are excluded.

VS.HSUPA.MeanChThroughput.TotalBytes

This measurement item provides the total number of bytes in the received uplink data at the RLC layer for all the MAC-d flows in a cell.

When data is received in an HSUPA active cell, the RNC measures the total number of bytes in the received uplink data at the RLC layer for the MAC-d flow in the cell. The RLC header overhead and the retransfer data are excluded.



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Cell Load Counters System In cell level, the counters related to load can be divided into:

Cell power load

Cell CE load

Cell code load



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Cell Power Load Cell RX Power Measurement

Mean RTWP of a cell

VS.MeanRTWP

Maximum RTWP of a cell

VS.MaxRTWP

Minimum RTWP of a cell

VS.MinRTWP

RTWP (Received Total Wideband Power) analysis is used to evaluate the uplink interference and loading status. If actual loading of the network is empty, then the RTWP is the thermal noise plus the noise figure of the NodeB. With the access of more users in the network, RTWP increases accordingly.

The basic principles are: RTWP at busy hour(BH) in one day should not exceed 1dB over the

target loading of the network. If HSUPA service is not activated, then 50% target loading is suggested,

otherwise 75% uplink target loading should be used. Since RTWP would be also influenced by the external interference, the RTWP result

is just for reference, cannot be used for the reason of expansion directly. The measurement is triggered at point A as shown in the figure, when the RNC

receives from the NodeB a COMMON MEASUREMENT REPORT message about the RTWP of a cell and obtains the RTWP of the cell. In this case, the RNC measures the items in this cell.



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Cell Power Load Cell TX Power Measurement

Mean TCP of a cell

VS.MeanTCP

Maximum TCP of a cell VS.MaxTCP

Minimum TCP of a cell VS.MinTCP

Total_TCP_Utility_Ratio =

VS.MeanTCP / Configured_Total_Cell_TCP

TCP is used to assess the downlink power consumption, which represents the downlink loading status. Evaluation of TCP power is helpful to avoid the congestion due to the insufficient power in downlink.

The basic principles for the TCP utilization are: 1. The mean R99 TCP Utility Ratio should not exceed 70% 2. No service failure is caused by the insufficient TCP power.

If 1) is not met, then more carrier or more sites are suggested, if 2) is not met, then more research are needed together with the actual traffic model.

The measurement is triggered at point A as shown in the figure, when the RNC obtains the TCP of a cell after receiving from the NodeB a COMMON MEASUREMENT REPORT message containing the TCP values of the cell. In this case, the RNC measures the items in this cell.



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Cell Power Load Non-HSDPA Cell TCP Values

Mean non-HSPA TCP of a cell VS.MeanTCP.NonHS

Maximum non-HSPA TCP of a cell VS.MaxTCP.NonHS

Minimum non-HSPA TCP of a cell VS.MinTCP.NonHS

R99_TCP_Utility_Ratio =

VS.MeanTCP.NonHS / Configured_Total_Cell_TCP

The basic principles for the TCP utilization are: 1. The mean R99 TCP Utility Ratio should not exceed 70% 2. No service failure is caused by the insufficient TCP power.

If 1) is not met, then more carrier or more sites are suggested, if 2) is not met, then more research are needed together with the actual traffic model.

The failures statistics counters which are caused by insufficient power are: VS.RRC.Rej.Power.Cong VS.RAB.FailEstCs.Power.Cong VS.RABFailEstPs.Power.Cong

The measurement is triggered at point A as shown in the figure, when the RNC obtains the non-HSPA TCP of a cell after it receives from the NodeB a COMMON MEASUREMENT REPORT message containing the non-HSPA TCP values of the cell. In this case, the RNC measures the items in this cell.



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Cell Power Load HSDPA Cell TX Power for HSDPA Service

Mean HSDPA-required power of an HSDPA cell VS.HSDPA.MeanRequiredPwr

Maximum HSDPA-required power of an HSDPA cell VS.HSDPA.MaxRequiredPwr

Minimum HSDPA-required power of an HSDPA cell VS.HSDPA.MinRequiredPwr

The measurement is triggered at point A as shown in the figure, when the RNC obtains the HSDPA-required power of an HSDPA cell after it receives from the NodeBa COMMON MEASUREMENT REPORT message containing the values of the cell. In this case, the RNC measures the items in this cell.



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Cell CE Load Mean CE Usages (Cell) :

UL_Mean_Used_CE_Number = VS.LC.ULCreditUsed.CELL / 2 DL_Mean_Used_CE_Number = VS.LC.DLCreditUsed.CELL

UL CE Utility Ratio (NodeB) = UL_Mean_Used_CE_Number_in_BH /

Configured_UL_CE_Number DL CE Utility Ratio (NodeB) =

DL_Mean_Used_CE_Number_in_BH / Configured_DL_CE_Number

Note: CE resource are shared by all the cells in one NodeB

CE is the baseband resources for services in NodeB. CE utilization ratio represents the base band resources consumption status of the NodeB. If the CE utilization ratio exceeds one specified threshold of the total CE, that means CE resources are going to be the limitation factor of the network. CE expansion is needed in this case.

The CE utilization ratio should not exceed 70% due to HUAWEIs experiences. CE is called NodeB credit on the RNC side and called Channel Element on the

NodeB side. It is used to measure the channel demodulation capability of NodeBs. VS.LC.ULCreditUsed.CELL

Mean UL credit usage (cell). In uplink, 1 Credit corresponds to 0.5 CE, so the CE number equals to the Credit number divided by 2.

VS.LC.DLCreditUsed.CELL Mean DL credit usage (cell). In downlink, 1 Credit corresponds to 1 CE, so the

CE number equals to the Credit number

Configured_UL_CE_Number and Configured_UL_CE_Number are from CE license file.



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Cell Code Load Mean Number of Occupied Codes (Cell)

VS.RAB.SFOccupy

Note:

The code number is normalized to SF = 256

The occupied codes are the codes occupied by the common channel, R99 user, and HS-DSCH

R99_Code_Utility_Ratio =

R99_Mean_Used_Code_in_BH / Max_R99_Available_Code

Codes here are the OVSF codes for both R99 and HSPA services. If the codes utilization ratio exceeds one specified threshold of the total available OVSF codes, that means codes resources are going to be the limitation factor of the network.

The basic principles for the codes utilization are: 1. The codes utilization for R99 services should not exceed 70%. 2. No congestion due to codes in busy hour of the cell.

If 1is not met, the codes allocation between R99 services and HSDPA services can be adjusted firstly according to the service distribution. If it is still not OK, then more carriers and sites are suggested If 2) is not met for a period of time, the adjustment suggestion is the same to 1).

VS.RAB.SFOccupy The measurement items provide the mean number and the maximum number

of occupied codes in a cell. The occupied codes are the codes occupied by the common channel, R99 user, and HS-DSCH. The code number is normalized to SF = 256, that is, converted to the code number when SF = 256. The way of the normalization to SF = 256 is to multiply the number when SF = k by 256/k.

Max_R99_Available_Code= 256 - Common channels(8 SF=256) - HSPDSCH (5 SF=16)*16 HsScchCodeNum ( 4 SF=128) * 2 EAGCHCodeNum( 0 SF=256)ERGCHEHICHCodeNum(0 SF=128) * 2

R99_Mean_Used_Code_in_BH = VS.RAB.SFOccupy - Common channels(8 SF=256) - HSPDSCH (5 SF=16)*16 HsScchCodeNum ( 4 SF=128) * 2 EAGCHCodeNum( 0 SF=256) ERGCHEHICHCodeNum(0 SF=128) * 2



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5 WCDMA RAN Traffic Counters and KPI Introduction RAN10

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