Umts Rnp Huawei

HUAWEI TECHNOLOGIES CO., LTD.

www.huawei.com

Huawei Confidential

Security Level: confidential2008-5-11

UMTS Radio Network Planning

Huawei Northwest Africa Region

RNP Solution Manage: William.chen

[email protected]

3G network planning introduce

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HUAWEI TECHNOLOGIES CO., LTD. Page 2Huawei Confidential

Agenda

New feature for WCDMAHandoverPower controlInterference

3G Radio Network Planning workflow

3G Coverage Planning

3G Capacity Planning

The Expect of Mobilis about RNP




WCDMA feature-Soft handover

n Soft/Softer handover

nSoft/Softer handover can help us hear the voice from more far!!

nSoft/Softer handover can help us improve the handover successful!

nSoft handover: Multi connection with different NodeB

nSofter handover: Multi connection with different cell belong to one NodeB




WCDMA feature-Power Control

n Power control

n Less Tx Power, Save Power

n Less Interference

lNear Point

lFar Point

nSmooth Rx Level, Improve QoS

I can hear very clearly, Down Txpower

I can not hear clearly, Up Txpower

Tx Power

Distance from NodeB

Frequency is very high: 1500Hz




WCDMA feature-Interference

n Interference

nWhere does Interference come?

n Central of Cell

Most come from own Cell, less from neighbor cell

n edge of Cell

Most come from neighbor Cell, less from own cell

nWhat is Interference for WCDMA?

All the Cell in same carry use same frequency

Carry1 Carry2 Carry3

frequency

Same as GSM, interference comes from frequency

How far I can hear you depend on both your voice strength and other people noise




WCDMA feature-Service

n Service

UMTS Radio Network Planning focus on the all kinds of bear service, how far and how many. Based on the experience of GSM, combined with knowledge of WCDMA feature, everyone can be an WCDMA RNP expert.

n AMR Voice

n Video Call

n PS R99

n PS HSPA

n MBMS

n….

All Service are carried by different Radio Bearers

Radio Bearers




Agenda

New feature for WCDMA

3G Radio Network Planning workflow3G Coverage Planning

3G Capacity Planning





DimensionPlanning

Preparation

NominalPlanning

Network Deployment DetailedPlanning

n Coverage area (Dense urban, Urban, Suburban )n QoS criteria (Consecutive Service, BLER)n Capacity requirement (Subscriber, traffic model)n Link budget parameters (Penetration loss, Propagation model)

Discussed byMobilis andHuawei

n Link budgetn Capacity dimensionn Iub and CE dimensionn Network development solution

Huawei deliver

The output of dimension is important criteria toassess RNP solution

Mobilis and Huawei do the planning jointly

n Site selectionn Propagation model tuningn Site survey/candidate site searchn 2G information

n Neighbor cell configurationn LAC/RAC planningn Cell parameters configurationn Algorithm configuration

UMTS Network Planning Workflow




0 3 6 9

12 15 18

21 24 27

30 33

36 39 42 45 48

010

2030

4050

60

70

80

90

100

Number of Sites

0 3 6 9

12 15 18

21 24 27

30 33

36 39 42 45 48

010

2030

4050

60

70

80

90

100

Number of Sites

Initial phase

Mature Phase

Development phase

n Capacity is emphasis;n Capacity expansion solution is importantn High spectrum efficiency

n Initial phase focus on the coverage;n Hotspot and Dense urban are first target;n Reuse 2G resource, save investment;n Provide 3G feature service;

n This phase focus on balanceof coverage and capacity;

n Hotspot and dense urban absorb capacity;

n Coverage extension to rural and highway;

n Provide abstract service, new feature such as HSPA, MBMS are important.

2G Resources

Different emphasis for planning phases

Experience and Deep communication!!

Optimization and new feature deployment!!

Long term development and expansion solution!!




Agenda



3G Coverage Planning3G Capacity Planning





NodeB Number

Cell Radius

Aim of coverage dimensioningn to obtain the cell radiusn to estimate NodeB number for coverage

Coverage Dimension

Link budgetInput

parameters

Dimension Start

Max PathlossPropagation model

Coverage area




AMR 12.2KVP 64KPS 128KPS 384K

Huawei Suggests

n PS128K or CS64K is the consecutive coverage service in the Urbanand Dense Urban

n PS 64K or AMR 12.2K is the consecutive coverage service in the Suburban or Rural Area

Step1:continue coverage service

Determine the continue coverage service n Initial coverage focus on 3G feature service such AMR and VP;

n UL 64k PS service combine with HSPA can meet high throughput requirement.




Step2:Configure link budget parameters

It is suggested that Mobilis fix the environment parameters, andvendor provides the equipment parameters.

3.8dB for Dense UrbanSlow Fading Margin

UL:1.1dB for Dense UrbanFast Fading Margin

Reference valueEquipment parameters

3dB(AMR),0dB(other)Body Loss

UL:7dBNoise figure

NodeB:18dBi, UE:0dBiAntenna Gain

UL:21dBm/DL AMR:30dBmTx Power

95% for Dense UrbanCoverage Probability

VP for Dense UrbanConsecutive service

Reference valueEnvironment parameters

TU3 for Dense UrbanCoverage channel model

18dB for Dense UrbanPenetration Loss

UL:50%,DL 75% for R99Cell load




Link Budget Parameters: equipment

n Some equipment parameters are recommended by 3GPP, it is usually fixed in

link budget.

0.5%Video call

5%PS64K/PS384

10%HSDPA

1%AMR

BLERContinued service

n BLER (Block Error Rate) n Body Loss n Max Service Tx Power

35~39dBmPS384(DL)

21dBmMobile phone (UL)

31~33dBmPS64K(DL)

34~36dBmVideo call(DL)

24dBmData card (UL)

30~32dBmAMR(DL)

Power offset Continued service3dB for AMR;

0dB for Video call and PS service

0.1% 1% 10%BLER

27dBm 30dBm 33dBmTx Power

BLER and service Tx Power is result by balancing the coverage and capacity.




Link Budget Parameters: equipment

n Some parameters are depended on vendor equipment, it is not fixed in link budget.n Cable loss

-

5/4

7/8

Cable select

BBU+RRU

Macro-NodeB

NodeBType

4.56dB/100m@2100MHz>50m

0dB-

6.29dB/100m@2100MHz<50m

Cable lossAntenna high

n Noise Figure

ü NF of terminal is 5~7dB, it is refer to User Equipmentü NF of NodeB is different between venders. Huawei 3800 series NodeB had low NF of 1.6, other vendor is 2.3~3.5.

The low NF can increase UL coverage by 5%~20%.

There is no cable loss for BBU+UUR, UL coverage increase by ~30%




Environment parameters: fading margin

Path Loss — fading due to propagation distance

n Long Term (Slow) fading—caused by shadowingn Short Term (Fast) fading—caused by multipath propagation

Slow Fading Margin depends on:

n Area Coverage Probability

--- The higher coverage probability is, the more SFM required

n Standard Deviation

--- The higher standard deviation is, the more SFM required

There should be margin to compensate the fading

6.2

6.2

7.2

9.4

11.7

Standard Deviation

8.195%Dense urban

695%Urban

490%Suburban

0.890%Rural

0.8

Slow fading margin

Highway

Clutter

90%

Coverage Probability




Environment parameters: SHO Gain

n SHO Gain against slow fadingn SHO reduces slow fading compared to the single cell case

n SHO gain against slow fading can improve the coverage probability

n SHO Gain against fast fading

n Macro Diversity Combining Gainn MDC gain reduces the Eb/No requirement

n MDC leads to a gain for reception sensitivity

n MDC gain exists for both uplink and downlink

Soft handover gain – SHO gain consists of three parts:

The fast fading margin and slow fading margin in Huawei’s link budget has been considered the SHO gain.




( ) [ ]dBLogNoiseRise ULη−⋅−= 110 10

Ø 50% UL Load — 3dBØ 60% UL Load — 4dBØ 75% UL Load — 6dB

UL Load

Noi

seR

ise(

dB)

Interference Curve

n How to calculated DL interference margin?

Environment parameters: interference margin

n UL interference margin is Noise Rise in NodeB

70% DL loadTx Power

Max Tx Power=

AMRPS384K

Pathloss_AMRPathloss_PS

Which pathloss is bigger?

Pathloss_AMR

Which received noise is bigger?Same Tx Power, but small pathloss, so PS384K noise rise is bigger than AMR

Same DL load, different DL interference margin

High throughput, high interference margin!

Same UL load, same interference margin




Step3:Reception Sensitivity

tN

Signal after despreading

W

R

Pow

er d

ensi

ty (W

/Hz)

Frequency (Hz)

Signal after spreading

fN

:thermal noise (-108dBm/3.84MHz)

:Noise figure of NodeB(1.6dB for NodeB, 7dB for UE)

10 (dB)PS384k18 (dB) PS64k25 (dB)AMR12.2k

Processing Gain

NoEb / :Bit energy divided by noise spectral density

) )(/3 8 4 0l o g (1 0 k b p sRP G =

PGNENNsitivityceptionSen bft −++= 0/Re

Processing Gain-- Related to bearer data rate




nUE Transmit Power

nUE Antenna Gain

nNodeB Antenna Gain

nSHO Gain

nSlow fading margin

nFast fading margin

nInterference margin

nBody Loss

nCable Loss

nPenetration Loss

nMaximum allowable pathloss

nNodeB reception sensitivity

Maximum Allowable Pathloss=UE Transmit Power

+ Antenna Gain+ SHO Gain－Slow Fading Margin－Fast Fading Margin－Interference Margin－Body Loss－Cable Loss－Penetration Loss

Step4: Maximum Allowable Pathloss

Notes：nNo TMA ApplicationnSFM&FFM not include SHO

Path Loss

Cable Loss

Antenna Gain

NodeBSensitivity

Penetration loss




The output of link budget is MPL rather than cell radius!

MPL is input of Link budget

Propagation model

Max Pathloss Cell RadiusLink budget

It is usually to compare the MPL to access the coverage performance. And cell radius can be a reference when given a consolidated propagation model.




Agenda

UMTS Network Introduce



3G Coverage Planning

3G Capacity PlanningThe Expect of Mobilis about RNP




Capacity Dimensioning Flow

Dimensioning Start

Assumed Subscribers

Yes

No

CS Peak Cell Load(MDE)CS Average Cell Load PS Average Cell Load

=Target Cell Load?

Dimensioning End

Total Cell Load

Load per Connection

Total subscriberTraffic model

Coverage dimension result




Multidimensional ErlangB

Multidimensional ErlangB - Resources shared

High Utilization of resources

Huawei use Multidimensional ErlangB(MDE) for CS Capacity dimension

ErlangB - Partitioning Resources

Low Utilization of resources

Traditional/other vender dimension method

Multidimensional ErlangB

Two big case, one small case, how many car can carry them all?

More Accuracy

Especial for 3G




CE/Iub Dimensioning

CEresources...

...

AMR12.2k

CS64k

MultdimensionalErlangB Model

Multidimensional ErlangB is used in CE/Iub dimension

If we know how many cases one car can carry, how can get the CE/Iub?

Represent the subscriber

Represent the NodeB

8

4

2

2

1

CE (DL)

10PS384k

5PS128k

3PS64k

3CS64k

1AMR12.2k

Iub(Kbps)CE (UL)Bearers n Signaling and CCH not required CE

n CE are pooled per NodeB for all cells

n Low CE resource required for higher

data rate

n advance algorithm improve the utilize

efficiency of Iub transmission




Dimensioning Input is Important

Site Number21 Coverage Performance

AMRVPPS384K

The balance of coverage dimension and capacity dimension

CE/IuB3

Coverage

dimension

Input requirement dimension start

Capacity

dimension




Hong Kong PCCW Project

n Complex terrain: Hilly to mountainous with steep slopes; lowlands in north

n Built-up dense business district: 630 buildings/km2, 250K people per km2, average

building height 45mn Difficult to build DAS in most high buildings

n High population density: 25,0000 people/km2 in dense urban

RNP & RNO in world’s most challenging radio propagation environment




RNP and RNO Timeline




Examples of Coverage Solutions for PCCW

l Large down-tilt for coverage and interference control

l Make full use of the obstruction of surrounding buildings

l 4th floor antennas to cover the shops along the main street

l In dense city areas, coverage need to be multi-dimensional

l Up-tilt technique is widely used in Hong Kong

Low Height Antenna

l Multi-sector coverage planning based on splitting cell solution

Rooftop Antenna Cell Splitting

Medium Height Antenna




Agenda

UMTS Network IntroduceNew feature for WCDMA3G Radio Network Planning workflow3G Coverage Planning3G Capacity PlanningThe Expect of Mobilis about RNP




QuestionsQuestions and Answer

What are the new feature for WCDMA?Soft/softer handover, power control, interference ,service

What is out put for Link budget?Maximum allowed Pathloss

What parameters should be fixed by operator?Environment parameters is fixed by operator, equipments parameters is provided by vendors

What algorithm is used in capacity dimension?Multidimensional ErlangB, it can improve the resource utilization efficiency



HUAWEI TECHNOLOGIES CO., LTD.

www.huawei.com

Huawei Confidential

Security Level: confidential2008-5-11

Thank You

www.huawei.com





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Umts Rnp Huawei