OWO207050 WCDMA RAN15 Traffic KPI and Relative Counters ISSUE 1.01

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Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.

WCDMA RAN 15 Traffic KPI and Relative Counters

Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Page3

Foreword

Traffic KPI is one of the most important KPI in the

UMTS Network. For Huawei KPI system, traffic KPI

include the following items:

All service TrafficAMR 12.2[Elang] 506.14

VP[Elang] 2.39PS R99 DL Throughput(Kbps) 984.23HSDPA DL Throughput(Kbps) 28868.20

PS MBMS DL Throughput(Kbps) 0.00

HSDPA TrafficHSDPA RLC Traffic Volume(MBytes) 1984376.998

HSDPA Mean UE 253.886HSDPA RLC Throughput(Mbps) 31.119


Objectives

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

Describe the Huawei RNC Traffic KPI and Related

Counters

Describe the Huawei Cell Traffic KPI and Related

Counters

Describe the Huawei Cell Load KPI and Related

Counters


Contents

1. RNC Traffic KPI and Related Counters

2. Cell Traffic KPI and Related Counters

3. Cell Load KPI and Related Counters


Contents


1.1 RNC Traffic KPI for AMR 12.2kbps Services

1.2 RNC Traffic KPI for Video Phone 64kbps Services

1.3 RNC Traffic KPI for PS R99 DL Throughput

1.4 RNC Traffic KPI for HSDPA DL Throughput

1.5 RNC Traffic KPI for HSUPA UL Throughput

1.6 RNC Traffic KPI for PS MBMS DL Throughput


Number of Equivalent Erlang for CS Domain (RNC) According to Huawei definition, Equivalent Erlang of

CS Domain in RNC is obtain from the following

counter:

Equivalent CS Conversational Erlang for RNC

VS.CSLoad.Erlang.Equiv.RNC (ID: 67202970)

Page7


Maximum Number of Equivalent Erlang for CS Domain (RNC) According to Huawei definition, Maximum number of

Equivalent Erlang for CS Domain in RNC is obtain

from the following counter:

Maximum equivalent CS Conversational Erlang for

RNC

VS.CSLoad.MaxErlang.Equiv.RNC (ID:

67192086)

Page8


AMR 12.2kbps Traffic (Erlang)

According to Huawei definition, the AMR 12.2kbps

Traffic is obtain from the following counters and

formula:

Number of UE connections allocated in downlink

12.2kbps AMR RATE

VS.RB.AMR.DL.12.2.RNC (ID: 67202490)

The above Unit is average user number, to get Erlang, the

counter value should be multiplied by {SP}/60, where {SP} is

the measurement period (unit: minute).

Number of Erlangs = VS.RB.AMR.DL.12.2.RNC

*{SP}/60


Contents

1. RNC Traffic KPI for All Services and Related

Counters


1.2 RNC Traffic KPI for Video Phone 64kbps

Services

1.3 RNC Traffic KPI for PS R99 Throughput





Video Phone 64kbps Traffic (Erlang) According to Huawei definition, the Video Phone

64kbps Traffic is obtain from the following counter:

Number of 64 kbit/s Conversational Service RBs in

CS Domain DL Directions

VS.RB.CS.Conv.DL.64.RNC (ID: 67202766)

The above Unit is average user number, to get Erlang, the

counter value should be multiplied by {SP}/60, where {SP} is

the measurement period (unit: minute).

Number of Erlangs = VS.RB.CS.Conv.DL.64.RNC

*{SP}/60


Contents

1. RNC Traffic KPI for All Services and Related

Counters



1.3 RNC Traffic KPI for PS R99 Throughput





Traffic KPI for PS R99 Throughput (kbps) According to Huawei definition, the PS R99

Throughput is obtain from the following counters:

DL/UL Traffic of R99 PS Domain in RNC VS.R99PSLoad.DLThruput.RNC (ID: 67204136)

VS.R99PSLoad.ULThruput.RNC (ID: 67204135)

DL/UL Max Traffic of R99 PS Domain in RNC VS.R99PSLoad.MaxDLThruput.RNC (ID:

67192988)

VS.R99PSLoad.MaxULThruput.RNC (ID:

67192985)


Contents

1. RNC Traffic KPI for All Services and Related Counters








Traffic KPI for HSDPA DL Throughput (kbps)

According to Huawei definition, the HSDPA DL

Throughput is obtained from the following counters:

DL Traffic of HSDPA PS Domain in RNC

VS.HSDPAPSLoad.DLThruput.RNC (ID: 67204137)

DL Max Traffic of HSDPA PS Domain in RNC

VS.HSDPAPSLoad.MaxDLThruput.RNC (ID:

67192991)


Contents









Traffic KPI for HSUPA UL Throughput (kbps)

According to Huawei definition, the HSUPA UL


UL Traffic of HSUPA PS Domain in RNC

VS.HSUPAPSLoad.ULThruput.RNC (ID: 67204138)

UL Max Traffic of HSUPA PS Domain in RNC

VS.HSUPAPSLoad.MaxULThruput.RNC (ID:

67192994)


Contents









Traffic KPI for PS MBMS DL Throughput (kbps)

According to Huawei definition, the HSUPA UL


DL Traffic of MBMS PS Domain in RNC

VS.MBMSPSLoad.DLThruput.RNC (ID: 67204139)

DL Max Traffic of MBMS PS Domain in RNC

VS.MBMSPSLoad.MaxDLThruput.RNC (ID:

67192997)


Contents





Contents


2.1 Cell Traffic KPI for Common Channels

2.2 Cell Traffic KPI for All Services

2.3 Cell Traffic KPI for HSDPA DL Throughput

2.4 Cell Traffic KPI for HSUPA UL Throughput


Common Channel (PCH & FACH) Capacities of common channels, such as PCHs

and FACHs, are configurable. If PCH or FACH

capacities are insufficient, messages may be

lost

Page22


PCH Usage Analysis

Page23

Process for analyzing PCH usage

PCH Pysical channel usage >60% or 70%&>x days

Reconfigue PCH capacity Re Plan LAC Areas

End

Yes

No


PCH Utility Ratio

According to Huawei definition, the PCH Utility Ratio

is calculate by the following formula: PCH Utility Ratio = [VS.CRNCIubBytesPCH.Tx / (3600

* VS.CRNC.IUB.PCH.Bandwidth)] * 100%

Related counters: VS.CRNCIubBytesPCH.Tx (ID: 67199637): Traffic

Volume on IUB_PCH (Cell)

VS.CRNC.IUB.PCH.Bandwidth (ID: 67199741):

CRNC_Iub PCH Bandwidth (Cell)


FACH Usage Analysis

Page25

Process for analyzing FACH usage


FACH Utility Ratio

According to Huawei definition, the FACH Utility Ratio

is calculate by the following formula: FACH Utility Ratio = [VS.CRNCIubBytesFACH.TX /

(3600 * VS.CRNC.IUB.FACH.Bandwidth)] * 100%

Related counters: VS.CRNCIubBytesFACH.TX (ID: 67199638): Traffic

Volume on IUB_FACH (Cell)

VS.CRNC.IUB.FACH.Bandwidth (ID: 67199740):

CRNC_Iub FACH Bandwidth (Cell)


RACH Utility Ratio

According to Huawei definition, the RACH Utility

Ratio is calculate by the following formula: RACH Utility Ratio = [VS.CRNCIubBytesRACH.Rx /

(3600 * VS.CRNC.IUB.RACH.Bandwidth)] * 100%

Related counters: VS.CRNCIubBytesRACH.Rx (ID: 67199639): Traffic

Volume on IUB_RACH (Cell)

VS.CRNC.IUB.RACH.Bandwidth (ID: 67199739):

CRNC_Iub RACH Bandwidth (Cell)


Contents







Cell CS Service Traffic Volume Over IuB (Cell) Measurement value for different CS services over Iub

interface Number of UL Bytes of CS Conversational Services (Cell)

VS.SRNCIubBytesCSConv.Rx (ID: 67199642)

Number of UL Bytes of CS Streaming Services (Cell) VS.SRNCIubBytesCSStr.Rx (ID: 67199643)

Number of DL Bytes of CS Conversational Services (Cell) VS.SRNCIubBytesCSConv.Tx (ID: 67199646)

Number of DL Bytes of CS Streaming Services (Cell) VS.SRNCIubBytesCSStr.Tx (ID: 67199647)


Measurement value for different PS services over Iub

interface

Number of UL Bytes of PS Conversational Services (Cell)

VS.SRNCIubBytesPSR99Conv.Rx (ID: 67199650)

Number of UL Bytes of PS R99 Streaming Services (Cell)

VS.SRNCIubBytesPSR99Str.Rx (ID: 67199651)

Number of UL Bytes of PS R99 Interactive Services (Cell)

VS.SRNCIubBytesPSR99Int.Rx (ID: 67199652)

Number of UL Bytes of PS R99 Background Services (Cell)

VS.SRNCIubBytesPSR99Bkg.Rx (ID: 67199653)

Cell PS Service Traffic Volume over IuB (Cell)


Cell PS Service Traffic Volume

Measurement value for different PS services on Iub

interface

DL PS Conversational Traffic Volume on Iub Interface (Cell)

VS.SRNCIubBytesPSR99Conv.Tx (ID: 67199654)

DL PS Streaming Traffic Volume on Iub Interface (Cell)

VS.SRNCIubBytesPSR99Str.Tx (ID: 67199655)

DL PS Interactive Traffic Volume on Iub Interface (Cell)

VS.SRNCIubBytesPSR99Int.Tx (ID: 67199656)

DL PS Background Traffic Volume on Iub Interface (Cell)

VS.SRNCIubBytesPSR99Bkg.Tx (ID: 67199657)


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

Bit Rates (Cell) VS.RB.AMR.UL.4.75 VS.RB.AMR.DL.4.75

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








Cell PS Service Traffic Mean Number of R99 PS Service RBs at Different UL and DL Bit

Rates (Cell) VS.RB.PS.Str.UL.DifferentRate1

VS.RB.PS.Str.DL.DifferentRate1

VS.RB.PS.Int.UL.DifferentRate2

VS.RB.PS.Int.DL.DifferentRate2

VS.RB.PS.Bkg.UL.DifferentRate2

VS.RB.PS.Bkg.UL.DifferentRate2

Where “DifferentServiceRate1” means the rates are: 8, 16, 32, 64,

128, 144, 256, [256,384] (kbps)

Where “DifferentServiceRate2” means the rates are: 8, 16, 32, 64,

128, 144, 256, 384 (kbps)


Contents







HSDPA Throughput Mean Throughput for One HSDPA User

VS.HSDPA.MeanChThroughput (ID: 67202894)

This counter indicates the mean downlink throughput for one

HSDPA UE in a cell


Traffic KPI for HSDPA

Average Number of HSDPA UEs in a Cell VS.HSDPA.UE.Mean.Cell (ID: 67202932)

Maximum Number of HSDPA UEs in a Cell VS.HSDPA.UE.Max.Cell (ID: 73403763)

Average number of DC-HSDPA UEs in anchor carrier in a Cell VS.HSDPA.DC.PRIM.UE.Mean.Cell (ID: 73410508)

Average number of DC-HSDPA UEs in supplementary carrier in a

Cell VS.HSDPA.DC.SEC.UE.Mean.Cell (ID: 73410509)


Traffic KPI for HSDPA

The average and maximum number of HSDPA UEs

with different categories in a serving cell is obtain

from the following counters:

VS.HSDPA.UE.Max.CAT(Number)

VS.HSDPA.UE.Mean.CAT(Number)

Where number means

1.6,7.10,11.12,13.14,15.16,17.20,21.24, 25.28


Traffivc KPI for HSDPA

The number of HSDPA RABs for cell with different

modulation scheme and feature

VS.HSDPA.64QAM.UE.Mean.Cell (ID: 73410491):

Average Number of 64QAM UEs in a Cell

VS.HSDPA.MIMO.UE.Mean.Cell (ID: 73410492):

Average Number of MIMO UEs in a Cell

VS.HSDPA.MIMO64QAM.UE.Mean.Cell (ID:

73410493): Average Number of MIMO+64QAM UEs in

a Cell


HSDPA RLC Traffic Volume (MBytes) According to Huawei definition, the HSDPA RLC

Traffic Volume (M bytes) is calculate by the following

formula:

HSDPA RLC Traffic Volume (M bytes) =

VS.HSDPA.MeanChThroughput.TotalBytes / (1024

* 1024)

Related counter:

VS.HSDPA.MeanChThroughput.TotalBytes (ID:

67189840): Number of Transmitted Downlink Bytes in

MAC-d Flow (Cell)


HSDPA RLC Throughput (Mbps)

According to Huawei definition, the HSDPA RLC

throughput (Mbps) is calculate by the following

formula:

HSDPA RLC Throughput (Mbps) =

VS.HSDPA.MeanChThroughput.TotalBytes * 8 /

(1024 * 1024 * SP * 60)

Where SP means Sampling Period of the counter, the

unit is in “minute”


Contents







HSUPA Throughput

Mean Throughput for One HSUPA User

VS.HSUPA.MeanChThroughput(ID: 67203932)

This counter indicates the mean downlink throughput for

ONE HSUPA UE in a cell.


Traffic KPI for HSUPA

Mean Number of HSUPA in a cell

VS.HSUPA.UE.Mean.Cell (ID: 67203850)

the number of HSUPA RABs for cell with 16QAM

VS.HSUPA.16QAM.UE.Mean.Cell (ID: 73410507)

The average and maximum number of HSUPA UEs with

different categories in a serving cell is obtain from the

following counters:

VS.HSUPA.UE.Max.CAT(Number)

VS.HSUPA.UE.Mean.CAT(Number)

Where number means 1.4,5,6,7


HSUPA RLC Traffic Volume (MBytes) According to Huawei definition, the HSUPA RLC

Traffic Volume (M bytes) is calculate by the following

formula:

HSUPA RLC Traffic Volume (M bytes) =

VS.HSUPA.MeanChThroughput.TotalBytes / (1024

* 1024)

Related counter:

VS.HSUPA.MeanChThroughput.TotalBytes (ID:

67192486): Number of Bytes in Received Uplink Data

from RLC Layer of Mac-d flow (Cell)


HSUPA RLC Throughput (Kbps)

According to Huawei definition, the HSUPA RLC

throughput (Mbps) is calculate by the following

formula:

HSUPA RLC Throughput (Mbps) =

VS.HSUPA.MeanChThroughput.TotalBytes * 8 /

(1024 * 1024 * SP * 60)

Where SP means Sampling Period of the counter, the

unit is in “minute”


Contents





Contents


3.1 Cell Load KPI for Power

3.2 Cell Load KPI for Channel Element

3.3 Cell Load KPI for DL OVSF Code


Power Resource Analysis

Power congestion occurs if RTWP and TCP values

are larger than pre-set thresholds.

If downlink power congestion occurs, we can enable

the LDR and OLC function.

If uplink power is restricted, we can check whether

any interference exists.

Page48


Uplink Load

In a WCDMA system, the RTWP value minus the cell

background noise is the noise increase that results

from a service increase. The noise increase (%)

represents the uplink service increase. For example,

a 3 dB noise increase corresponds to 50% uplink

load and a 6 dB noise increase corresponds to 75%

uplink load.

Page49


Uplink Load

Page50


Cell UL Power Load (UL Interference) According to Huawei definition, the Cell UL Power Load is

calculate by the following formula:

Where PN is the thermal noise which is around -106dBm

Related counters: VS.MeanRTWP (ID: 67199617): mean value of all RTWPs

reported in a certain period

VS.MaxRTWP (ID: 67199680): maximum value of all RTWPs reported in a certain period

VS.MinRTWP (ID: 67199617): minimum value of all RTWPs reported in a certain period

10

P-RTWP N

10

11 oadUL_Power_L


Downlink Load

The downlink capacity of a cell is limited by its total

available transmit power, which is determined by the

base station amplifier and by software settings.

When the downlink power is exhausted, the following

may occur:

The cell coverage decreases.

The data throughput decreases.

The service quality declines.

New call requests are rejected.

Page52


Downlink Load

In a WCDMA system, TCP is defined to measure the

downlink total transmit power. For Huawei RNCs, four

TCP-associated counters are defined:

VS.MeanTCP: mean carrier transmit power in a cell

VS.MaxTCP: maximum carrier transmit power in a

cell

VS.MinTCP: minimum carrier transmit power in a

cell

VS.MeanTCP.NonHS: mean downlink carrier

transmit power for non-HSDPA in a cell Page53


Cell Total DL Power Load According to Huawei definition, the Cell Total DL Power

Load is calculated by the following formula: Cell Total DL Power Load = TCP / configured total cell TCP

Related counters: VS.MeanTCP (ID: 67199618): mean value of all TCP s


VS.MaxTCP (ID: 67199682): maximum value of all TCPs


VS.MinTCP (ID: 67199683): minimum value of all TCPs



Cell Non-HSPA DL Power Load According to Huawei definition, the Cell Non-HSPA DL

Power Load is calculated by the following formula: Cell Non-HSPA DL Power Load = Non HSPA TCP / configured

total cell TCP

Related counters: VS.MeanTCP.NonHS (ID: 67202902): Mean Non-HSDPA

Transmitted Carrier Power for Cell

VS.MaxTCP.NonHS (ID: 67202900): Maximum Non-HSDPA Transmitted Carrier Power for Cell

VS.MinTCP.NonHS (ID: 67202901): Minimum Non-HSDPA Transmitted Carrier Power for Cell


HSDPA Power Resources

Page56

Dynamic power resource allocation


Cell HSDPA DL Power Load According to Huawei definition, the Cell HSDPA DL

Power Load is calculate by the following counters: VS.HSDPA.MeanRequiredPwr (ID: 67202984):

Mean Power Required by HS-DSCH for Cell

VS.HSDPA.MaxRequiredPwr (ID: 67202982): Maximum Power Required by HS-DSCH for Cell

VS.HSDPA.MinRequiredPwr (ID: 67202983): Minimum Power Required by HS-DSCH for Cell


Contents






CE Resource Consumption Analysis Cells under one NodeB share CEs. Common channels

have reserved CE resources and signaling is carried

on a channel accompanying the DCH. Therefore,

CCHs and signaling are considered not to consume

CEs.

Page59


CE Resource Consumption Analysis

Page60

Number of CEs consumed by different services


Cell Channel Element Load

According to Huawei definition, the Cell Channel

Element Load is calculate by the following formula: 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 where

UL mean used CE number = VS.LC.ULCreditUsed.Mean / 2

DL mean used CE number = VS.LC.DLCreditUsed.Mean

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


Related Counter

Mean UL credit usage (cell)

VS.LC.ULCreditUsed.Mean (ID: 67202567)

Mean DL credit usage (cell)

VS.LC.DLCreditUsed.Mean (ID: 67202570)


Contents






Cell DL OVSF Code Load According to Huawei definition, the Cell DL OVSF

Code Load is calculate by the following formula: R99 Code Utility Ratio = R99 mean used code in BH /

max R99 Available code

Related counter: VS.RAB.SFOccupy (ID: 67203416)

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


Cell DL OVSF Code Load Related counter:

VS. SingleRAB.SF* (* stand for different spreading factor)

Number of Single-RAB UEs Occupy the Codes with Different Spreading Factors of 4/8/16/32/64/128/256 in a cell

VS.MultRAB.SF* (* stand for different spreading factor)

Number of Multi-RAB UEs Occupy the Codes with Different Spreading Factors of 4/8/16/32/64/128/256 in a cell

VS.RAB.SFOccupy

Mean Number of SFs that Have Been Occupied (Let the SFs that Have Been Occupied a Unitary SF of 256) for Cell


Cell DL OVSF Code Load

R99 Code Utilization = [(VS.SingleRAB.SF4+VS.MultRAB.SF4) x 64+

(VS.SingleRAB.SF8+VS.MultRAB.SF8) x 32 +


(VS.SingleRAB.SF32+VS.MultRAB.SF32) x 8+



(VS.SingleRAB.SF256+VS.MultRAB.SF256)]/256 x 100%

Total Code utilization for a cell:

VS.RAB.SFOccupy /256

The value would be greater than the real usage as the

code for HSDPA was reserved initially.


HSDPA Code Resources

Page67

OVSF code sharing


Cell HS-PDSCH Code Usage

Number of codes used by HS-PDSCHs in a cell to

check HSDPA code load.

Related counter: VS.PdschCodeUsed.Mean

Mean number of codes used by HS-PDSCHs in a cell

VS.PdschCodeUsed.Max

Maximum number of codes used by HS-PDSCHs in a cell

VS.PdschCodeUsed.Min

Minimum number of codes used by HS-PDSCHs in a cell


Summary

In this course, we learn the Huawei Traffic KPI and

Counter System, including:

RNC Traffic KPI and Related Counters

Cell Traffic KPI and Related Counters

Cell Load KPI and Related Counters

Thank youwww.huawei.com

Documents

OWO207050 WCDMA RAN15 Traffic KPI and Relative Counters ISSUE 1.01