10 parameter ion

8/6/2019 10 Parameter ion

1/67

Huawei Confidential. All Rights Reserved

Parameters Optimization

ISSUE 1.0


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2 Internal Use

ReviewReview

Parameters Optimization is an important step after

RF Optimization

Service quality and network resources utilization

will be improved after Parameters Optimization


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3 Internal Use

ReviewReview

New Sites Intergrated

Single Site Verification

Cluster of Sites

ready ?

RF Optimisation

Services Testing &Parameter Optimisation

Regular Reference Route

Testing & Stats Analysis

Re- optimisationNeeded ?

YES

NO

YES

NO


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4 Internal Use

ObjectivesObjectives

Upon completion this course, you will

be able to:

Understand the procedure of ParametersOptimization

Master the contents of Parameters

Optimization.


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Chapter 1Chap

ter 1 Parameters OptimizationParameters Op

timization

ProcedureProcedure

Chapter 2Chapter 2 Parameters OptimizationParameters Optimization

ContentContent


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Parameters Optimization ProcedureParameters Optimization Procedure

Data Input and Find

Problems

Verify Parameter Problems

Other ProcessClassify Parameter Problems

Determine Parameter Values to be

Modified and List MML Commands

Evaluate Changing Effects

Prepare Test Plan and Implement

Changing

Test , Get Data again and Compare

Problems Eliminate Or Need not Change more

End

Determine whether Changing

End

N

N

Y

Y

Y

N


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Data Input and Find ProblemsData Input and Find Problems

Data Input

Drive Test Data

KPI Network Statistic Data

Network Tracing Message

Network Warning Information

Problems

Use Input Data to find out the Problems such as

- Call Setup Success Rate Low

- Handover Success Rate Low

- Drop Call Rate High etc.


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Verify Parameter ProblemsVerify Parameter Problems

Parameter Problems

No RF P roblems

No Hardware/Software Problem

Related with Environment

Or Speed

Parameters never Optimized

Before


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Classify Parameter ProblemsClassify Parameter Problems

Mobile Management Parameter Problems

Power Control Parameter Problems

Power Configuration Parameter Problems

Load Control Parameter Problems

Other Parameter Problems


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Determine Parameter ValuesDetermine Parameter Values

List Parameters Changing Form

Original Parameter Values vs. New Parameter Values

List Parameters Changing MML Command


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Evaluate Changing InfluenceEvaluate Changing Influence

Evaluate influence on Customer Service and Other Networks

Evaluate influence on OMC ( Efforts , Maintenance)


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Prepare Test Plan and Implement ChangingPrepare Test Plan and Implement Changing

Prepare Test schedule , Routes, Tools and be ready to get Information .

Change Parameters and Make Records.


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ProcedureProcedure


ContentContent



Chapter 2 Parameter Optimization ContentsChapter 2 Parameter Optimization Contents

1. Cell Selection & Reselection

2. Handover



Parameters Optimization ContentsParameters Optimization Contents

Mobile Management Parameters Optimization

Power Control Parameters Optimization

Power Configuration Parameters Optimization

Load Control Parameters Optimization

Note: Because there are a lot of parameters , it is not possible to introduce

every parameter . Only some parameters about network optimization are mentioned here

and maybe more parameters need to be added in the future.



Mobile Management Parameters OptimizationMobile Management Parameters Optimization

Cell Selection & ReselectionCell Selection & Reselection

- Only for UE in Idle more or Cell_FACH, CELL_PCH and URA_PCH

- Changing of cell on which UE camped on,

- To ensure UE is always connected to the best serving cell to receive

system information and establishing RRC connection

HandoverHandover

- Changing cell for UE in CELL_DCH mode

- Ensure seamless coverage and load balancing.



Cell Selection & Reselection ProcedureCell Selection & Reselection Procedure

InitialCell Selection

AnyCellSelection

goherewhennoUSIMintheUE

USIMinserted

Campedon

anycell

goherewhenever anewPLMNis

selected

1nocell information

storedfor thePLMNcell information

storedfor thePLMN

Storedinformation

Cell Selection

nosuitablecell found


Cell Selectionwhenleaving

connectedmode

suitablecell found 2

suitablecell found

Campednormally

suitablecell found


leaveidlemode

returntoidlemode

Connectedmode

CellReselectionEvaluationProcess

suitablecell found

trigger


1

Cell Selectionwhenleaving

connectedmode

noacceptablecell found

acceptablecell found

acceptable

cell found

suitablecell found 2

leaveidlemode

returntoidlemode

Connectedmode

(Emergencycallsonly)

CellReselectionEvaluationProcess

acceptablecell found

trigger

noacceptablecell found

NASindicatesthatregistrationonselected

PLMNisrejected(except withcause#14

or #15 [5][16] )



Cell Selection Criteria (S Criteria)Cell Selection Criteria (S Criteria)

The cell selection criterion S is fulfilled when:The cell selection criterion S is fulfilled when:

for FDDcells: Srxlev > 0 ANDSqual > 0

for TDDcells: Srxlev > 0

Where:

Squal = Qqualmeas Qqualmin

Srxlev = Qrxlevmeas - Qrxlevmin - Pcompensation

When UE wants to select an UMTS cell , the cell should satisfy S Criterion.


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Cell Selection ParametersCell Selection Parameters


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Cell Re-selection Measure ConditionCell Re-selection Measure Condition

Uses Squal for FDD cells and Srxlev for TDD forSx

Sx > SintrasearchSx > Sintrasearch, UE need not perform intra-frequency measurements.

Sx Sintersearch, UE need not perform inter-frequency measurements.

Sx SsearchRAT mm, UE need not perform measurements on cells of

RAT"m". If Sx


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Cell Reselection Criteria (R Criteria)Cell Reselection Criteria (R Criteria)

1) All cells satisfy S Criteria.

2) Select the Cell with the highest R value using the following method:

Cells are ranked according to the R criteria.

R values are calculated using CPICH RSCP, P-CCPCH RSCP and the averaged received

signal level for FDD, TDD and GSM cells, respectively.In all cases, the UE shall reselect the new cell, only if the following conditions are met:

- New cell is better ranked than the serving cell during a time interval Treselection.

- More than 1 second has elapsed since UE camped on the current serving cell.

RRss = Q= Qmeas,smeas,s + Q+ Qhyst, shyst, s

RRnn = Q= Qmeas,nmeas,n - Q- Qoffset, s,noffset, s,n


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Cell Reselection ParametersCell Reselection Parameters


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Cell Reselection ParametersCell Reselection Parameters


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Chapter 2 Parameter Optimization ContentsChapter 2 Parameter Optimization Contents

1. Cell Selection & Reselection

2. Handover


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Handover ProcedureHandover Procedure

Node B

Node B

Node B

Intra-frequency cells

Neighbor cells both from same NodeB or

other NodeBs

Measurement reportMeasurement report

Handover decisionHandover decision

measurement controlmeasurement control

Measurement and filteringMeasurement and filtering

Handover executionHandover execution


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Soft Handover ExampleSoft Handover Example


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Soft Handover ProcedureSoft Handover Procedure


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Soft Handover Event 1ASoft Handover Event 1A

1A (Add a cell in Active Set)1A (Add a cell in Active Set)

)2/(10)1(1010 111

aaBest

N

i

iNewNew HRLogMWMLogWCIOLogMA

+

+

=

MNew: Measurement result of cell entering the reporting range.

CIONew: Cell individual offset for the cell entering the reporting rangeif an individual cell offset is stored for that cell. Otherwise it is equal to 0.

Mi: Measurement result of a cell not forbidden to affect reporting range in

the active set.

NA : The number of cells not forbidden to affect reporting range in the

current active set.

MBest: Measurement result of the cell not forbidden to affect reporting range

in the active set with the highest measurement result, not taking into account

any cell individual offset.

W : Parameter sent from UTRAN to UE.

R1a : Reporting range constant.

H1a : Hysteresis for the event 1a.


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Soft Handover Event 1BSoft Handover Event 1B

1B (Remove a cell from Active Set)1B (Remove a cell from Active Set)

)2/(10)1(1010 111

bbBest

N

i

iOldOld HRLogMWMLogWCIOLogMA

++

+

=

MOld : Measurement result of the cell leaving the reporting range.

CIOOld: Cell individual offset for the cell leaving the reporting range if

an individual cell offset is stored for that cell. Otherwise it is equal to 0.

Mi : Measurement result of a cell not forbidden to affect reporting range in the

active set.

NA : Number of cells not forbidden to affect reporting range in the current

active set.

MBest : Measurement result of the cell not forbidden to affect reporting rangein the active set with the lowest measurement result, not taking into account

any cell individual offset.

W: Parameter sent from UTRAN to UE.

R1b : Reporting range constant.

H1b : Hysteresis for the event 1b.


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Soft Handover Event 1CSoft Handover Event 1C

1C (A non-active primary CPICH becomes better than an active primary CPICH. If

Active Set is not full ,add the non-active cell into active set .Otherwise use the cellsubstitute the active cell . )

2/10101cInASInASNewNew HCIOLogMCIOLogM +++

MNew: Measurement result of the cell not included in the active set.

CIONew: Cell individual offset for the cell becoming better than the cell in the active

set if an individual cell offset is stored for that cell. Otherwise it is equal to 0.

MInAS: Measurement result of the cell in the active set with the highest

measurement result.

MInAS: Measurement result of the cell in the active set with the lowest

measurement result.

CIOInAS: Cell individual offset for the cell in the active set that is becoming worse

than the new cell.

H1c : Hysteresis parameter for the event 1c.


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Soft Handover Event 1DSoft Handover Event 1D

1D (Change of best cell. If the chosen cell is not in Active Set , addthe cell into Active Set and modify measurement control .Otherwise only

modify measurement control. )

2/10101dBestBestNotBestNotBest HCIOLogMCIOLogM +++

MNotBest: Measurement result of a cell not stored in "best cell"

CIONotBest: Cell individual offset of a cell not stored in "best cell" .

MBest: Measurement result of the cell stored in "best cell".

CIOBest: Cell individual offset of a cell stored in "best cell" .H1d: Hysteresis parameter for the event 1d.


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Soft Handover ParametersSoft Handover Parameters

Parameter NameParameter Name DescriptionDescription Default SettingDefault Setting

IntraRelThdFor1A Relative thresholds of soft handover for Event 1A (R1a) 10 , namely 5dB (step 0.5)

IntraRelThdFor1B Relative thresholds of soft handover for Event 1B (R1b) 10 , namely 5dB (step 0.5)

Hystfor1A, Hystfor1B,Hystfor1C, Hystfor1D

Soft handover hysteresis (H1x) 6,namely 3dB (step 0.5) for H1a .

8,namely 4dB(step 0.5) for H1b, H1c,H1d.

CellIndividalOffset Cell CPICH measured value offset; the sum of this parametervalue and the actually tested value is used for UE eventestimation. (CIO)

0

WEIGHT Weighting factor, used to determine the relative threshold of softhandover according to the measured value of each cell in theactive set.

0

TrigTime1A,TrigTime1B,TrigTime1C,TrigTime1D

Soft handover time-to-trigger parameters (event time-to-triggerparameters. Only the equation are always satisfied during thetrigger time, the event will be triggered).

D640, namely 640ms .

FilterCoef Filter coefficient of L3 intra-frequency measurement D5 ,namely 5

I t t H d CS D i P dI t t H d CS D i P d


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Intersystem Handover CS Domain ProcedureIntersystem Handover CS Domain Procedure

UE

1. RRC Connect Req

15. RAB Assign Req

NODEB RNC3G MSC BSS2G MSC

2. RRC Setup Complete

3. Measure Control (measure ID 0x1 )

4. Measure Control (measure ID 0x2 )

5.Initial UE message(service request)

6.DL DT (Authentication Request)

7.UL DT (Authentication Response)8.Common ID

9. Security Mode Command10. Security Mode Command

11. Security Mode CMP12. Security Mode CMP

13. UL DT(Setup)

14. DL DT(Call proceeding)

17.RL Recfg Ready

21 RAB Assign Resp20 RB Setup Cmp

19 RB Setup

16.RL Recfg Prep

18.RL Recfg Commit

22. DL DT( Alerting )

23. DL DT( Connect)

24. UL DT(Connect Ack)

26.RL Recfg Prep26.RL Recfg Prep

28 PhyCh Reconfig28 PhyCh Reconfig29.RL Recfg Comit29.RL Recfg Comit

27.RL Recfg Ready27.RL Recfg Ready

30 PhyCh Reconfig CMP30 PhyCh Reconfig CMP

31 Meaure Control(ID3 )

32Measure Report 33 Relocation Required

34 Relocation Command35. HandoverFromUtranCommand

44 Iu Release Req

46 RL Del Resp45 RL Del Req

47 Iu Release Complete

25 Measure Report(2D)


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Intersystem Handover MeasureIntersystem Handover Measure

1)1) Inter-frequency measurement reporting Event 2D ,2FInter-frequency measurement reporting Event 2D ,2F

to reflect the currently used frequency quality.

Event 2d:Event 2d: The estimated quality of the currently used frequency is below a certain threshold.

The variables in the formula are defined as follows:

QUsed : Quality estimate of the used frequency. TUsed 2d : The absolute threshold that applies for the used frequency and event 2d.

H2d : Hysteresis parameter for the event 2d.

Event 2fEvent 2f: The estimated quality of the currently used frequency is above a certain threshold.

The variables in the formula are defined as follows:

QUsed : The quality estimate of the used frequency.

TUsed 2f : The absolute threshold that applies for the used frequency and event 2f.

H2f : Hysteresis parameter for the event 2f.

2/22 ddUsedUsed HTQ

2/22 ffUsedUsed HTQ +

I t t H d M


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Intersystem Handover MeasureIntersystem Handover Measure

2) RNC Receive 2D reportsRNC Receive 2D reports ( i.e current serving carrier signal is poor ) :

- RNC sends Measurement Control (ID3); Allow UE to begin measure other system signal.

- UE will send measurement result reports periodically

- When Received 2F reports ( i.e current serving carrier signal is no longer poor), RNC sends

Measurement Control (ID3, but different contents) to let UE stop measuring other system signal .

3) When RNC received periodical reports ,RNC use the following formula to judge whether it should

handover UE to another system .

MMother_RATother_RAT + CIO > T+ CIO > Tother_RATother_RAT + H/2+ H/2

Tother_RAT : Inter-system handover decision threshold

Mother_RAT : Inter-system (GSM RSSI) measurement result received by RNC

CIO : Cell Individual Offset, which is the inter-system cell setting offset;

H : Hysteresis,

If the formula is met, a trigger-timer called TimeToTrigForSysHo will be started, and a handover

decision will be made when the timer expires;

Note: If inter-system quality satisfies the following condition before the timer expires:

Mother_RAT + CIO < Tother_RAT - H/2Mother_RAT + CIO < Tother_RAT - H/2

timer will stopped, and RNC will waiting to receive the next inter-system measurement report.

I t t H d P t


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Intersystem Handover ParametersIntersystem Handover Parameters

P t O ti i ti C t tP t O ti i ti C t t


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Power Control Parameters Optimization Power Configuration Parameters Optimization


P C t l P t O ti i tiP C t l P t O ti i ti


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Power Control Parameters OptimizationPower Control Parameters Optimization

Power Control Characteristics

Minimize the interferenceMinimize the interference in the network, thus improve capacity and

quality

Maintain link qualityMaintain link quality in uplink and downlink by adjusting the powers

Overcome near far effectOvercome near far effect by providing minimum required power

level for each connection

Provides protection against shadowing and fast fadingprotection against shadowing and fast fading

P C t l Cl ifi tiP C t l Cl ifi ti


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Power Control ClassificationPower Control Classification

UE NodeB RNC

SIRTarget

Bler /BerSIR

TPCCommand

Outer LoopPower Control

Inner LoopPower Control

OpenLoopPower Control

Open Loop Power ControlOpen Loop Power ControlTo determine UEs initial uplink transmit power in PRACH and NodeBs initial downlink transmit power

in DPDCH.

Outer Loop power controlOuter Loop power control

To maintain the quality of communication at the level of bearer service quality requirement, while usingpower as low as possible.

Inner loop power control (also called fast closed loop power controlInner loop power control (also called fast closed loop power control

To adjust UEs uplink / NodeBs downlink DPCH.

Power of every one slot in accordance with TPC commands.

Inner loop power control frequency is 1500Hz

O L P C t l U li kO L P C t l U li k


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Open Loop Power Control - UplinkOpen Loop Power Control - Uplink

BCH CPICH channel powerBCH CPICH channel power

UL interference leveUL interference leve

Constant ValueConstant Value

Measure CPICH_RSCPMeasure CPICH_RSCP

and determine the initialand determine the initial

transmitted powertransmitted power

RACHRACH

Preamble_Initial_Power = Primary CPICH TX power - CPICH_RSCPPreamble_Initial_Power = Primary CPICH TX power - CPICH_RSCP

+ UL interference + Constant Value+ UL interference + Constant Value

Primary CPICH TX power , UL interference and Constant Value are broadcasted in the System Information

and CPICH_RSCP is the measured value by UE

O L P C t l D li kO L P C t l D li k


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Open Loop Power Control - DownlinkOpen Loop Power Control - Downlink

DCHDCH

MeasureCPICHEc/I0MeasureCPICHEc/I0

RACHreportstheRACHreportsthe

measuredvaluemeasuredvalue

Determinethedownlinkinitial powerDeterminethedownlinkinitial power

controlcontrol

RR : User bit rate.

WW : Chip rate (3.84M).

PcpichPcpich : Primary CPICH transmit power.

Eb/IoEb/Io : Downlink Eb/Io required value for a bearer service.

(Ec/Io)cpich(Ec/Io)cpich : Measurement value reported by the UE.

: Downlink cell orthogonal factor.PtotalPtotal : Current cells carrier transmit power measured at the NodeB

and reported to the RNC.

))/(( totalo

cCPICH

o

b PcpichI

EP

W

R

I

EP =

O L P C t l P tOpen Loop Power Control Parameters


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Open Loop Power Control ParametersOpen Loop Power Control Parameters

O t L P C t lOuter Loop Power Control


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Outer Loop Power ControlOuter Loop Power Control

SRNC DRNC

Set SIRSet SIR

targettarget

Set SIRtargetSet SIRtarget

Set SIRtargetSet SIRtarget

MacrodiversityMacrodiversity

combiningcombining

Used to setting SIRTarget

for inner loop power control.

Uplink outer loop power control is controlled by SRNC (serving RNC) for setting a target SIR for each

UE.

SIRTarget is updated according to the estimated uplink quality (Block Error Ratio/ Bit Error Ratio).

If UE is not in DTX status (that means RNC can receive uplink traffic data), RNC uses BLER to compute

SIRTarget . Otherwise , RNC will use BER to compute SIRTarget .

Downlink outer loop power control controlled by UE receiver; to converge to required link quality

(BLER)

set by the network (RNC) in downlink.

Outer Loop Power Control ParametersOuter Loop Power Control Parameters


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Outer Loop Power Control ParametersOuter Loop Power Control Parameters

Inner Loop Power ControlInner Loop Power Control


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Inner Loop Power ControlInner Loop Power Control

Divided into uplink and downlink inner-loop power control

Purpose to adjusts UE or NodeB transmit power, to keep the

received SIR to be around SIR target.

Uplink Inner Loop Power ControlUplink Inner Loop Power Control


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UTRAN behaviourUTRAN behaviour

Serving cells (cells in the active set) estimate SIRest of the received uplink DPCH.

Serving cells then generate TPC commands and transmit TPC on every slot according to the

following rule:

ifSIRest > SIRtarget , TPC = "0",

ifSIRest < SIRtarget , TPC = "1".

UE behaviourUE behaviour Upon reception of one or more TPC commands in a slot, UE shall derive a single TPC command,

TPC_cmd, for each slot, combining multiple TPC commands if more than one is received in a slot.

This is also valid when SSDT transmission is used in the downlink.

Two algorithms supported by UE when deriving a TPC_cmd.

Which algorithms to be used is determined by a UE-specific higher-layer parameter,

"PowerControlAlgorithm", and is under the control of the UTRAN.

If "PowerControlAlgorithm" indicates "algorithm1", then the layer 1 parameter PCA shall take thevalue 1 and if "PowerControlAlgorithm" indicates "algorithm2" then PCA shall take the value 2.



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The step size DTPC is a layer 1 parameter which is derived from the UE-specific higher-layer parameter

"TPC-StepSize" which is under the control of the UTRAN.

If "TPC-StepSize" has the value "dB1", then the layer 1 parameter DTPC shall take the value 1 dB and if

"TPC-StepSize" has the value "dB2", then DTPC shall take the value 2 dB.

The parameter "TPC-StepSize" only applies to Algorithm 1 . For Algorithm 2 DTPC shall always take the

value 1 dB.

After deriving of the combined TPC command TPC_cmd using one of the two supported algorithms, UE shall

adjust the transmit power of uplink DPCCH with a step of DDPCCH (in dB) which is given by:

DDPCCH = DTPC TPC_cmd.



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Algorithm 1Algorithm 1

UE received 0ne TPC in not soft handover. The value of TPC_cmd is

derived as follows:

-- If TPC = 0 ; then TPC_cmd = 1.If TPC = 0 ; then TPC_cmd = 1.

-- If TPC = 1 ; then TPC_cmd = 1If TPC = 1 ; then TPC_cmd = 1

Algorithm 2Algorithm 2

UE not in soft handover, only one TPC received. In this case, UE shall process

received TPC on a 5-slot cycle.

TPC_cmd value shall be derived as follows:

The first 4 slots of a set, TPC_cmd = 0 . No change in power

The 5th slot of a set, TPC _cmd is derived as follows:

If all TPC are 0; TPC_cmd = -1If all TPC are 0; TPC_cmd = -1 and the transmission will decrease 1dB; If all TPC are 1; TPC_cmd = 1If all TPC are 1; TPC_cmd = 1 and the transmission will increase 1dB;

Otherwise, TPC_cmd=0Otherwise, TPC_cmd=0.

Downlink Inner Loop Power ControlDownlink Inner Loop Power Control


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UE behaviourUE behaviour

UE generate TPC commands to control the network transmit power and send them inthe TPC field of the uplink DPCCH.

The UE shall check the downlink power control mode (DPC_MODE) before generating

the TPC command:

IfDPC_MODE = 0DPC_MODE = 0 : UE sends a unique TPC command in each slot and the TPC

command generated is transmitted in the first available TPC field in the uplink

DPCCH;

IfDPC_MODE = 1DPC_MODE = 1 : UE repeats the same TPC command over 3 slots and the new

TPC command is transmitted such that there is a new command at the beginning

of the frame.

The DPC_MODEDPC_MODE parameter is a UE specific parameter controlled by the UTRAN.



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UTRAN behaviourUTRAN behaviour Upon receiving the TPC commands, UTRAN adjust its downlink DPCCH/DPDCH

power accordingly.

ForDPC_MODE = 0DPC_MODE = 0, UTRAN estimate the transmitted TPC command TPCest to be 0

or 1, and shall update the power every slot.

If DPC_MODE = 1DPC_MODE = 1, UTRAN estimate the transmitted TPC command TPCest over

three slots to be 0 or 1, and shall update the power every three slots.

Inner Loop Power Control ParametersInner Loop Power Control Parameters


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Inner Loop Power Control ParametersInner Loop Power Control Parameters



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Physical Channels TypePhysical Channels Type


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Physical Channels TypePhysical Channels Type

Common Channels ParametersCommon Channels Parameters


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Common Channels ParametersCommon Channels Parameters

All channels power is reference to PCPICH Power expect PCPICH itself .

Dedicated Channels ParametersDedicated Channels Parameters


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Dedicated Channels ParametersDedicated Channels Parameters

Dedicated Channel Power is also reference to PCPICH Power.



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Load Control Parameters OptimizationLoad Control Parameters Optimization


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Load Control Parameters OptimizationLoad Control Parameters Optimization

Call Admission Control (CAC)

To control cells load by admission/rejection request to ensure a cells load

under control.

Dynamic Channel Configuration Control (DCCC)

To dynamically change a connections load to improve cell resourceutilization and control cells load.

Call Admission Control ProcedureCall Admission Control Procedure


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Call Admission Control ProcedureCall Admission Control Procedure

call admisson request arrive

Get the service characteristic and

the current load

Uplink call admission

control evaluation

admitted ?

Downlink call admission

control evaluation

admitted ?

call admitted call rejected

end

n

y

y

n

Call Admission Control ParametersCall Admission Control Parameters


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Call Admission Control ParametersCall Admission Control Parameters

Dynamic Channel Configuration ControlDynamic Channel Configuration Control


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DCCC: Dynamic Channel Configuration Control aim to making full use of radio

resource (codes, power, CE )

- Configured bandwidth is fixed when no DCCC

- Configured bandwidth is changing when DCCC

- Traffic rate

Rate

or

ban

d

DCCC ProcedureDCCC Procedure


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Measurement reportMeasurement report

DCCC decisionDCCC decision

Traffic Volume

measurement control

Traffic Volume

measurement control

UE and RNC MeasurementUE and RNC Measurement

DCCC executionDCCC execution

Traffic Volume MeasurementTraffic Volume Measurement


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Traffic Volume Measurementa c o u e easu e e t

Threshold

Transport

Channel

Traffic

Volume

Reporting

event 4A

Time

Reporting

event 4A

Threshold

TransportChannel

Traffic

Volume

Reporting

event 4B

Time

Reporting

event 4B

Reporting

event 4B

DCCC DecisionDCCC Decision


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1) 4a event report -> increase bandwidth

4b event report -> decrease bandwidth

2) If current bandwidth


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y gy g

ParametersParameters



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y gy g

ParametersParameters

SummarySummary


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yy

Parameter Optimization improves network quality and solvesnetwork problems.

Parameter Optimization is a complicated procedure and needs

parameter and algorithm knowledge.

Parameter Optimization will be combined with other optimization

activities making network better !

10 parameter ion

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