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Guideline of U-Net for WCDMA in XXXX Project

SU Ming 65427, NTS Dept., Malay GSRC, June 28, 2010

1 Create a New Project 

Select File->New, select Huawei UMTS HSPA, and click button OK .

2 Set the Coordinates

Select Tools->Options， click button of  Projection and select WGS 84 / UTM

 zone 44N; click button of  Display , select WGS 84 and  set box of  Degree

Format to xx.xxxxxS.

Note:

A. Coordinates are shown in digital map

folder /heights/ projections.txt .

B. In India, set Projection to WGS 84 / UTM zone 44N, set

Display  to WGS 84, and set Degree Format  to  xx.xxxxxS; Negative

format such as - xx.xxxxxS means in southern hemisphere.

3 Import Digital Map

Select File->Import.

Find folder clutter, select index , and select Clutter Classes; revision of the

legend color is allowed herein.Switch to folder heights, select index , and select Altitudes.

Switch to folder vector , select index, select vectors, and select WG84 in the

second box; then click button Import.

Note:

Option Embed  means making a copy of the digital map into the

project file.

4 Setup Propagation Models

Make a copy of  Standard Propagation Model, right-click it and select popup

menu Properties; then a popup window appears.

4.1 Change Name in page General 

SPM for Chennai is given herein.

4.2 Revise Propagation Models Parameters in page

Parameters

 The calibrated parameters come from the results of CW test (herein set

K1=23.2, K2=45.07, and leave others to the default).

4.3 Revise the Clutter Loss Parameters in page Clutter 

 The following settings are the recommended Clutter Loss Parameters.

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Clutter Losses(dB)

1-CBD(0m) 6

2-urban_high(0m) 6

3-urban_medium(0m) 54-suburban_high(0m) 3

5-suburban_low(0m) 2

6-suburban_with_dense_veg(0m) 0

7-industrial_low(0m) 2

8-industrial_high(0m) 4

9-seasonal_water (0m) 0

10-water (0m) -1

11-river (0m) -1

12-airport (0m) 213-open/parks(0m) 0

14-quasi_open(0m) 2

15-buildding_blocks(0m) 10

16-forest(0m) 14

17-low_tree_density(0m) 0

18-agriculture(0m) 0

19-village(0m) 2

20-sea(0m) -1

5 Setup Basic Network Information

5.1 Configure Antenna

Antenna information can export as txt file from the format of   planet?

Database file, which is convenient for reading and revising.

5.2 Set Frequency Bands

Right-click Transmitter, select Network   Settings->Frequenies->

Bands->Open Table, edit Bands table if requires, and configure it to

the following settings.

Name Average Frequency (MHz) First Carrier Last Carrier

Band1 2110 0 0

5.3 Set BTS Equipment

Right-click Transmitter, select Equipment ->BTS Equipment , edit BTS

Equipment table if requires, herein add BTS 3900 and set its relative

properties in the table.

5.4 Set Sites Equipment

5.4.1 Add Equipment

Right-click Sites, select Equipment ->Open Table, and add a

following line in table Equipment .

BTS3900 Huawe 0 1 UL min noise 0 0 False False

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i

5.4.1 Configure CE Consumption Parameter

CE is called NodeB Credit at RNC side and Channel Element  at NodeB side.

Configure CE Consumption Parameters in the following way:

Right-click Sites and select Equipment  -> Channel Element Consumption to

configure the CE consumption for each type of Radio Bearers.

Equipment R99 Radio

Bearer

No. of UL CEs

Used

No. of DL CEs

Used

BTS3900 ADPCH-EDPCCH 2 1

BTS3900 ADPCH-UL64 3 1

BTS3900 LCD12 1 1

BTS3900 LCD64 3 2

BTS3900 UDD128 5 4BTS3900 UDD384 10 8

BTS3900 UDD64 3 2

Note:

A. Sites Equipment is different from BTS Equipment item as is shown

in 5.3 Set BTS Equipment .

B. To know specific CE Consumption for each Service, refer to  Affixes

B. CE Consumption Mapping.

5.5 Set PSC Properties

Right-click Transmitter, select Cells->Primary Scrambling Codes-

>Domains, add BSNL_PSC_DOMAIN in the table.

Right-click Transmitter, select Cells->Primary Scrambling Codes-

>Groups, add BSNL_PSC_DOMAIN in the table.

Domain Group Min Ma

x

Step

BSNL_PSC_DOMAIN BSNL_PSC_Group 0 511 1

5.6 Set Feeder Properties

Right-click Transmitter, select Equipment ->Feeder Equipment , edit

Feeder Equipment table if requires; herein leave it to the default.

6 Import Sites Parameter

Right-click Sites, select Open Table, paste Name, Longitude, and Latitude of 

sites into the Sites Table; set Max No of UL CEs and Max No of DL CEs to 384,

Equipment to BTS3900, and leave others to the default.

 Tip(s):

Remember to save the result now.

7 Import Transmitters Parameter

Right-click Transmitter, select Open Table, Paste Site, Transmitter ,

 Antenna Type, Height ,  Azimuth, Mechanical  Downtilt ,  Additional  Electrical

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Downtilt , Transmission Feeder Length, Transmission Loss, Reception Loss, and

Main calculation radius.

Set BTS  Equipment  to BTS 3900, Feeder Equipment  to 7/8" at 2100 MHz 

respectively, Main propagation model to SPM for Chennai, Main resolution(m)to 6 herein, Frequency band to Band1, and Cell Edge Coverage Probability(%)

to 75.

Note:

A. Do not set DX(m), DY(m)!

B.  Active means on-air or not.

8 Configure the Cells Parameter

Right click Transmitters, then select Cells->Open, import the following cells

parameters:

Name, Transmitter , Carrier , Scrambling  Code  Domain, Primary   Scrambling

Code, Max   Power  (dBm),  Pilot Power (dBm), SCH Power (dBm), Total Power 

(dBm), SC Reuse Distance (m)(set  to 15000), Max Number of Intra-carrier 

Neighbours(set to 30), Max UL Load Factor (%)(set  to 50),UL Load Factor( set

to 40%), Max DL Load (% Pmax) (set  to 50), HSPA Support (or HSDPA,

HSUPA in U-NET 2.2 ), Max Number of HS-PDSCH Codes per DL TS(set to 5), SC

reuse distance(set to 15000).

Note:

Copy Name, Transmitter together from Table Transmitter directly; orelse may cause failure.

9 Calculate Losses and Noise Figures

Right-click Transmitter  and select Equipment->Recalculate losses and Noise

Figures to calculate the Noise Figures.

Right-click Transmitter  and select Calculations->Force Path Matrix 

Calculations to calculate the Path Losses.

Note:

It’s time-consuming especially for high resolution map herein.

10 Define Computation Zone and Focus Zone

 The digital map usually is very large and has no site in some place. To ensure

accuracy and save time, we define Computation Zone and Focus Zone firstly,

esp. for Monte-Carlo Simulation that may repeat hundreds of times.

Define Computation Zone in the following way:

Switch to Page Geo, right-click  Zones->Computation Zone, select Draw to

start define a Computation Zone, ensure the drawn line be closed to make aseparated Zone.

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Define Focus Zone in the following way:

Switch to Page Geo, right-click  Zones->Focus Zone, select Draw to start

define a Focus Zone within the Computation Zone defined previously, ensurethe drawn line be closed to make a separated Zone.

 Tip(s):

Remember to save the result so far.

11 Conduct Predictions

 The former three predictions items are based on static coverage only. Simply

follow the steps:

Right-click Predictions, select New, select any of   Coverage by 

Transmitter/Coverage by Signal Level/Overlapping Zones, and click OK . Now

we can see Coverage by Signal Level 0 under folder Predications. Right-click

Coverage by Signal Level 0 to start calculation.

After calculation stops, right-click Coverage by Signal Level 0, and select

Histogram. Now we can get statistics as follows.

We can change Area to Percentage and get the following statistics chart.

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In this step, we should pay attention to the coverage and the overlap zones. If 

they are not good, usually we should optimize the engineering parameters toimprove the coverage.

Note:

A. Step 1~11 are similar to GSM. For GSM we can have a rest

presently, whilst it’s just a start for UMTS.

B. After define Traffic Modeling in UMTS Parameters, other items can

be done herein.

 Tip(s):

If you can get correct result herein after run the calculation, you are qualified

as a junior user of U-NET for WCDMA, and can start your medium-level course

now. Go on!

12 Configure the Traffic Modeling

 Traffic Modeling is configured within the Menu UMTS Parameters by default.

It’s the major difference between UMTS and GSM in U-NET. Mobility Types are

independent of Terminal and vice versa. Whilst Services depend on Mobility 

Types that defines Eb/Nt for users at various speed. User Profiles depend on

Mobility Types and Services, and Environments depend on User Profiles andMobility Types.

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In general, configure five elements of Traffic Modeling with the following

procedures.

12.1 Configure Mobility Types

Name Min Ec/Io (dB) Average Speed(km/h)

HS-SCCH Ec/Nt Threshold (dB)

Pedestria

n

-15 3 -10

50 km/h -14 50 -9

90 km/h -13 90 -8

12.2 Configure Terminals

Refer to the default configuration.

12.3 Configure Services

Configure R99 Radio Bearers, HSDPA Radio Bearers and HSUPA Radio Bearers

firstly in the following way:

Right-click UMTS parameters->Services and select R99 Radio Bearers/ HSDPA

Radio Bearers/ HSUPA Radio Bearers, and modify the table if requires.

After modifying the Radio Bearers, configure Services if requires.

12.4 Configure User Profiles

Name

Business

UserStandard

User

12.5 Configure Environments

Name Clutter weight

Dense

Urban

5

Rural 10

Suburban 10

Urban 75

13 Create Traffic Map

Switch to Page Geo, right-click Traffic and select New Map, and select an

option among 6 options. Herein we select Map based on

Environments(Raster) or other option such as Map based on Traffic Densities,

then click button Create Map.

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 The following shows the example when choose Map based on

Environments(Raster).

Now a box appears at the up-left position of the window. We use this tool to

draw Traffic Map that defines the traffic distribution.

13.1 Define No data within Focus Zone

Pick No data from the down-list box in the Traffic Map tool; enclose an area

within Focus Zone area previously defined in 10 Define Computation Zone

and Focus Zone.

13.1 Define Rural within No data

Pick Rural from the down-list box in the Traffic Map tool; tightly enclose an

area within No data area.

13.2 Define Suburban within Rural Pick Suburban from the down-list box in the Traffic Map tool; enclose an area

within Rural area.

13.3 Define Urban within Suburban 

Pick Urban from the down-list box in the Traffic Map tool; enclose an area

within Suburban area.

13.4 Define Dense Urban within Urban 

Pick Dense Urban from the down-list box in the Traffic Map tool; enclose an

area within Urban area.

Now we can see a traffic map Environment Map 1 under folder Traffic.

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 Tip(s):

Sometimes it’s unnecessary to define Dense Urban if there’s no area

belonging to Dense Urban.

14 Start Monte-Carlo Simulations

Herein it considers the impacts of Traffic and named as Monte-Carlo

Simulation for UMTS system in industry. It especially shows the simulation

difference between GSM and UMTS system. Simply follow the steps:

Right-click UMTS Simulations, select New, then change Number of Simulations

from 1 to any positive integer such as 100; switch to Page Source Traffic and

select a traffic map (herein it is Environment map 1); change the ConvergenceParameter at page  Advanced is possible if requires, and click OK  to start

calculation.

When the difference between two consequent calculations is less than the

given convergence, the simulation calculation ends, and the result is kept. Or

else it requires some adjustment for the settings.

After calculation stops, right-click Simulation 0 under Group 0, and now we

can get statistics as follows.

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15 Cell-level Network Planning

15.1 PSC Planning

PSC planning equals to BCCH&BSIC planning in GSM and we can conduct this

task in U-NET. After defines detailed network basic information as is

mentioned above, continue the following steps to start PSC Planning:

Right-click Transmitter  and select Cells->Primary Scrambling Codes-> Automatic Allocation.

Change Default Reuse Distance from 2000 to 6000; then click Run to get the

recommended PSC Planning result. If good, click Submit to update it.

15.2 Neighbor Cell Planning

Neighbor Cell Planning is similar as it in GSM and we can conduct this task in

U-NET. After define detailed network basic information as is mentioned above,

continue the following steps to start Neighbor Cell Planning:

Right-click Transmitter and select Cells->Neighbors->Automatic Allocation.

Change some Parameter if requires; then click Run to get the recommended

Neighbor Planning result. If good, click Submit to update it.

16 Automatic Cell Planning (Option)

 This part is dedicated to get recommendable cell planning result, such as Cell

 Type, Antenna Height, Azimuth, etc. It requires additional license of ACP,

hereby we can treat it as an option of U-NET training. For details, login U-NET

Server given in Affixes A. Access Available U-NET Server 

 Tip(s):It’s truly challenging if you can get correct result based on real-life network

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parameters in each step above shown. You are a qualified medium-level user

of U-NET for WCDMA presently. It means you can tackle with almost all routine

network planning issues as a Huawei RF engineer regards of U-NET for

WCDMA. Congratulations!

Affixes:

A. Access Available U-NET Server

10.82.100.36 szxgsc06-nt username/password in China Domain

10.69.24.10 student_umts/Unet_234 @ this computer (do not login in

Domain)

B. CE Consumption Mapping

CE is called NodeB Credit  in RNC, and Channel Element  at NodeB side. To

configure the CE Consumption, we should make clear of the necessary CE

Consumption for each Radio Bearers. Affixed herein is the present function

definition.

For DCH Service, RNC calculate SF(CE) based on MBR. The SF(CE) is shown in

the following Table 1.

For HSUPA Service, RNC calculate SF(CE) based on GBR if  

HsupaCeScheduleSwitch is ON, or else based on MBR. The SF(CE) is shown in

the following Table 2.

For HSDPA Service, there’s no definition of the consumption of HS-DSCH in

3GPP TS 25.433, thus some resource reserved for HSDPA RAB. Therefore for

HSDPA Service, there’s no CE consumption admission.

 Table 1 DCH CE Consumption

 Table 2 HSUPA CE Consumption

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Speed(kbit/s)

ULSF

UL No of  CEConsumption

UL No of  NodeB Credits

DLSF

DL No of CEConsumption

DL No of NodeBCredits

3.4 256 1 2 256 1 113.6 64 1 2 128 1 18 64 1 2 128 1 116 64 1 2 128 1 132 32 1.5 3 64 1 164 16 3 6 32 2 2128 8 5 10 16 4 4144 8 5 10 16 4 4256 4 10 20 8 8 8384 4 10 20 8 8 8

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Direction

Speed(kbit/s) SF No of CEConsumption

No of  NodeBCredits

UL 8 64 1 216 64 1 232 32 1 264 32 1 2128 16 2 4144 16 2 4256 8 4 8384 4 8 16608 4 8 161450 2SF4 16 322048 2SF2 32 642890 2SF2 32 64

5760 2SF2+2SF4 48 96