Network Planning Guideline

Radio Network Planning Report

Radio network planning report for ET

ZTE Confidential Proprietary II

Radio Network Planning Report

Copyright © 2007 ZTE Corporation Shenzhen P. R. China ZTE CONFIDENTIAL: This document contains proprietary information of ZTE Corporation

and is not to be disclosed or used except in accordance with applicable agreements.

Due to update and improvement of ZTE products and technologies, information of the document is subjected to change without notice.


ZTE Confidential Proprietary III

Table of Contents 1 Requirement Analysis ............................................................................................................ 4

1.1 Frequency Resource Availability ................................................................................... 4 1.2 Traffic Model ................................................................................................................. 4 1.3 Capacity Requirement .................................................................................................... 4 1.4 Coverage Requirement ................................................................................................... 4 1.5 KPI Requirement ............................................................................................................ 4

2 Coverage Planning .................................................................................................................. 6 2.1 Link Budget .................................................................................................................... 6 2.2 Propagation Model ....................................................................................................... 10 2.3 Coverage Planning Principles ...................................................................................... 11 2.4 Antenna Selection ......................................................................................................... 13

3 Capacity Planning ................................................................................................................. 14 3.1 Frequency Reuse Strategy ............................................................................................ 14 3.2 SDCCH Channel Planning ........................................................................................... 14 3.3 GPRS/EDGE Channel Planning ................................................................................... 14 3.4 Voice Channel Planning ............................................................................................... 15

4 Radio Network Planning Result .......................................................................................... 16 4.1 Site Distribution Map ................................................................................................... 16 4.2 Site Amount .................................................................................................................. 17 4.3 Subscribers Amount ..................................................................................................... 17 4.4 Appendix ...................................................................................................................... 17 New sites information ............................................................................................................. 17


ZTE Confidential Proprietary 4

1 REQUIREMENT ANALYSIS

1.1 Frequency Resource Availability

Frequency Type Frequency Band No. Channels 900MHz 8 MHz 40 EGSM 0 MHz 0 1800MHz 8 MHz 40

1.2 Traffic Model

Traffic Model Value GoS 2%

m Erl /Sub 15

1.3 Capacity Requirement

No. Province Before

forecasted subs

New forecasted

Subs

Total forecasted subs

1 Badghis 0 0 0

2 Farah 0 8060 8060

3 Herat 0 40710 40710

4 Nimroz 0 4030 4030

Total 0 52800 52800

1.4 Coverage Requirement

No. Province 1 Badghis

2 Farah

3 Herat

4 Nimroz

1.5 KPI Requirement

1. The signal strength for the cities and roads should be as follow:

Cities in the province better than – 80 dBm



Road coverage better than -90 dBm

Rural coverage better than -95 dBm

ZTE can match the above signal strength requirements in BTS coverage area, except deep indoor coverage.

2. The offered network solution should meet the below listed KPI’s:

Call Setup Success Rate (CSSR) > 98.5%

Call Drop Rate (CDR) < 1%

SDCCH Drop Rate (SDR) < 0.5%

Incoming and outgoing Success Rate (HOSR) > 96%

Based on the assumption that TCH congestion rate is less than 1%, the offered network can meet the above listed KPI.

The Incoming and outgoing Success Rate (HOSR) depends on not only AWCC

system but also other operators’ system. If the other operators have enough

interconnection resources, ZTE can match the above HOSR requirement.

ZTE define the CSSR, CDR, and SDR as following:

Call Set-up Success Rate(CSSR)= (1- SDCCH channel in call drop

rate%)*( 1-TCH in congestion rate(exclude handover)%)*(1- TCH assign

failure rate%) if TCH congestion rate less than 1% , We can match CSSR

requirement.

CDR= Total number of TCH call drops/ Total number of TCH seizures

(including handover)

SDR= Total number of SDCCH call drops/ Total number of SDCCH

seizures (including handover)



2 COVERAGE PLANNING

2.1 Link Budget

The GSM link budget depends on four types of parameter: system parameter, BTS parameter, MS parameter, and margin.

A link budget contains most of the coverage objectives parameters and technical assumptions. According to the system parameters and design parameters available in the context, it is possible to analyze the uplink/downlink power balance under different conditions. Subsequently, it is then from the balanced link budget, the maximum allowable path loss is calculated and applied onto the various propagation models with respect to different environments.

When area coverage probability is 95%, link budget is presented as following table:

Table 1 GSM900&GSM1800 Uplink/Downlink Link Budget DU (Dense Urban)

Item Link Budget 1 Link Budget 1 900M/EGSM, DU 1800M, DU Uplink Downlink Uplink Downlink

TX Rank-top Output Power (dBm) 33.0 43.4 30.0 43.2

DDT (dB) 0.0 0.0

Total Cable Loss (dB) 2.03 2.03 2.91 2.91

Feeder Loss (dB) 1.17 1.17 1.85 1.85

Jumper Loss (dB) 0.36 0.36 0.57 0.57

Connector Loss (dB) 0.30 0.30 0.30 0.30

Lightening rod Loss (dB) 0.20 0.20 0.20 0.20

TMA Insertion Loss (dB) 0.0 0.0

TX Antenna Gain (dBi) 0 17 0 17

EIRP (dBm) 33.0 58.4 30.0 57.3

Antenna Diversity Gain (dB) 3.0 3.0

RX Sensitivity (dBm) -112.0 -102.0 -112.0 -102.0

TMA Contribution to Sens. (dB) 0.00 0.00

RX Antenna Gain (dBi) 17 0 17 0

FWDR (dB) 0.0 0.0

IRC (dB) 0.0 0.0

Acceptance Level (dBm) -70 -70

Log-Normal Margin (dB) 11.7 11.7

Allowed Max Path Loss (dB) 119.27 116.65 115.39 115.57

Uplink-Downlink (dB) 2.62 -0.18



Limited DL Limited UL Limited

Allowed Max Path Loss (dB) 116.65 115.39

SSdesign (dBm) -58.3 -58.3

SSacceptance (dBm) -70 -70

BTS Antenna Height (m) 25 25

MS Antenna Height (m) 1.5 1.5

Area Coverage Probability 95.00% 95.00%

Cell Radius(indoor) (km) 0.44 0.24

Table 2 GSM900&GSM1800 Uplink/Downlink Link Budget MU (Mid Urban)

Item Link Budget 2 Link Budget 2 900M/EGSM, MU 1800M, MU Uplink Downlink Uplink Downlink


DDT (dB) 0.0 0.0


Feeder Loss (dB) 1.36 1.36 2.15 2.15

Jumper Loss (dB) 0.36 0.36 0.57 0.57





EIRP (dBm) 33.0 58.2 30.0 57.0





FWDR (dB) 0.0 0.0

IRC (dB) 0.0 0.0















Table 3 GSM900&GSM1800 Uplink/Downlink Link Budget SU (Suburban)

Item Link Budget 3 Link Budget 3 900M/EGSM, SU 1800M, SU Uplink Downlink Uplink Downlink


DDT (dB) 0.0 0.0


Feeder Loss (dB) 1.56 1.56 2.46 2.46

Jumper Loss (dB) 0.36 0.36 0.57 0.57





EIRP (dBm) 33.0 62.4 30.0 61.3





FWDR (dB) 0.0 0.0

IRC (dB) 0.0 0.0




Uplink-Downlink (dB) -0.78 -3.78

Limited UL Limited UL Limited








Table 4 GSM900&GSM1800 Uplink/Downlink Link Budget RU (Rural)

Item Link Budget 4 Link Budget 4 900M/EGSM, RU 1800M, RU Uplink Downlink Uplink Downlink


DDT (dB) 0.0 0.0


Feeder Loss (dB) 1.95 1.95 3.08 3.08

Jumper Loss (dB) 0.36 0.36 0.57 0.57







EIRP (dBm) 33.0 62.0 30.0 60.6





FWDR (dB) 0.0 0.0

IRC (dB) 0.0 0.0




Uplink-Downlink (dB) -0.78 -3.78

Limited UL Limited UL Limited








Table 5 GSM900&GSM1800 Uplink/Downlink Link Budget Road

Item Link Budget 5 Link Budget 5 900M/EGSM, Road 1800M, Road Uplink Downlink Uplink Downlink


DDT (dB) 0.00 0.0


Feeder Loss (dB) 1.95 1.95 3.08 3.08

Jumper Loss (dB) 0.36 0.36 0.57 0.57




TX Antenna Gain (dBi) 0.00 20 0 20

EIRP (dBm) 33.00 60.58 30.0 59.0




RX Antenna Gain (dBi) 20 0.00 20 0



FWDR (dB) 0.00 0.0

IRC (dB) 0.00 0.0









BTS Antenna Height (m) 45.00 45




2.2 Propagation Model

ZTE use Aircom to implement the coverage prediction. In this planning tool, propagation modeling algorithm is extremely flexible and allows the user to incorporate a variety of different types of empirical propagation model in frequencies between 150MHz and 2GHz.

In all communication propagation environments, the radio communication environment is the most complicated. In addition to the path loss in free space, it also affected by slow fading and multi-path propagation, while may cause the occurrence of space selective fading, time selective fading and frequency selective fading, and thus greatly deteriorates the uplink/downlink receiving signals. In the design of radio network, therefore, choosing an approximate propagation model will lay a foundation for coverage planning and prediction emulation.

Following is the standard propagation model for macro cell in Aircom format:

Received Power (dBm) = Transmit Power (dBm) - Path loss (dB)

And,

PathLoss=k1+k2log(d)+k3(Hms)+k4log(Hms)+k5log(Heff)+k6log(Heff)log(d)+k7diffn+C_loss

Where:

d is the distance from the base station to mobile station (km).

Hms is the height of the mobile station above the ground (m). This figure

may be specified either globally or for individual clutter categories.



Heff is the effective base station antenna height (m).

diffn is the diffraction loss calculated using either Epstein, Peterson,

Deygout or Burlington equivalent knife edge methods.

K1&K2 is the intercept and slope. These factors correspond to a constant

offset (in dBm) and a multiplying factor for the log of the distance between

the base station and mobile station.

K3 is the mobile antenna height factor. Correction factor used to take

into account the effective mobile antenna height.

K4 is the Okumura-Hata multiplying factor for Hms.

K5 is the effective antenna height gain. This is the multiplying factor for

the log of the effective antenna height.

K6 is the is the Okumura-Hata type multiplying factor for log(Heff)log(d)

K7 is a multiplying factor for diffraction calculations. A choice of

diffraction methods is available.

C_loss is the clutter loss. Clutter specifications such as heights and

separation are also taken into account in the calculation process when

setting the relative parameters.

2.3 Coverage Planning Principles

ZTE is planning to increase coverage according to AWCC requirement; the following table illustrates the districts that need to be covered.

No. Province Sites number 1 Farah 2

2 Herat 12

3 Nimroz 1

In radio network planning, ZTE not only cover cities required in the bidding document, but also increase the deep coverage and capacity in existing cites. In choosing the new site location, ZTE have already considered the terrain, local economy, local safety situation, microwave link and so on. By trade-off between new BTS site and microwave repeater site.

Coverage planning

Coverage planning focuses on the following parts:

Add new BTS sites in major cities: Herat, Farah, Zaranj to enhance the



coverage quality. The following figure is an example which shows the added new sites in Heart city.

Add new BTS sites in the Suburb. The following figure is an example

which shows the added new sites in the Suburb of Herat.

Add new BTS sites covering major roads in Heart, Farah. The following figure illustrates the road coverage from Herat city to Herat Airport as an example.



2.4 Antenna Selection

Antenna selection is a very important part in radio network planning, and is mainly based on requirements on coverage, antenna selection priority and installation spaces. ZTE propose the same antennas as being used in the current network for the following main reasons.

The parameters and performances of current used antennas can fully meet the technical requirement of AWCC.

The mechanism performances of current used antennas are perfect, which is quite convenience for maintenance and optimization for radio network.

It can reduce the complexity of maintenance by using only one antenna type, and subsequently save the TCO of AWCC.



3 CAPACITY PLANNING

3.1 Frequency Reuse Strategy

AWCC has a spectrum of 8MHz in 900M, 8MHz in 1800M. ZTE propose adopting Co-Combiner, then the maximum configuration of GSM900 is S444, and GSM1800 is S444.The frequency reuse strategy is as following.

BCCH frequency reuse. 1 frequency point is reserved as the isolation between BCCH and TCH. 1*3 RF hopping of TCH.

3.2 SDCCH Channel Planning

In addition to the service channel TCH in the GSM system, there is another important channel: Standalone Dedicated Control Channel (SDCCH). It is largely related with the user location update, IMSI attachment/detachment, call setup, short message, fax service setup and various supplementary services. As a result, every cell should be configured with SDCCH of certain quantity according to the cell capacity. As per that principle, the configured quantities of SDCCH channels in the cells with various numbers of carriers are listed in the table below:

Table 1 SDCCH Channel Planning

Num of Carriers Num of Channels SDCCH Channel

Structure

Num of Control

Channels

(BCCH+SDCCH)

1 8 SDCCH/8 2

2 16 SDCCH/8 2

3 24 2×SDCCH/8 3

4 32 2×SDCCH/8 3

3.3 GPRS/EDGE Channel Planning

The final planning PDCH number will be contain Static PDCH and Dynamic PDCH for each cell. The detail configuration of PDCH for one cell as follow:

Table 2 Number of PDCH

Site model Static PDCH

number Dynamic PDCH

number

S888(900M+1800M) 2 2

S444(900M) 1 3

S222 (900M) 1 3



3.4 Voice Channel Planning

The voice service channel planning is as follows without HR:

Table 3 Channel Planning without HR TRX

Number Total

Channel BCCH SDCCH/8 TCH/FR TCH/HR

GOS=2% (Erl)

2 16 1 1 13 0 7.4 4 32 1 2 28 0 20.15

Table 4 Subscriber vs. Configuration

BTS configuration Subs per site

S222 (900M) 1,480 S444 (900M) 4,030

S888(900M+1800M) 8,060



4 RADIO NETWORK PLANNING RESULT

4.1 Site Distribution Map

Figure 1 Sites Distribution (red-new sites, blue-existing sites)



4.2 Site Amount

Table 5 site amount Site amount after add new sites

Site model New Site No. New TRX

No. Total site No. Total TRX No.

S222 3 18

S444 12 244

S444+S444 0 0

Total 15 262

4.3 Subscribers Amount

Table 6 Subscribers amount after adding new sites

Priority Province forecasted

Subs designed

subs 2 Badghis 0 0

2 Faryab 6000 8060

1 Herat 36000 40710

2 Nimroz 3000 4030

Total Subs 45000 52800

4.4 Appendix

New sites information

Site Name Longitude Latitude

BTS

Config Tower Height

HRT_ADD_1 62.12792824 34.38687608 S444 30m

HRT_ADD_3 62.18601736 34.37316448 S444 rooftop

HRT_ADD_4 62.17624837 34.33861227 S444 rooftop

HRT_ADD_5 62.17149999 34.32325382 S444 30m

HRT_ADD_6 62.22000081 34.28886236 S444 40m



HRT_ADD_7 62.24674576 34.32797385 S444 40m

HRT_ADD_8 62.28745506 34.26646685 S444 40m

HRT_ADD_9 62.28159908 34.30421677 S444 40m

HRT_ADD_10 62.14961702 34.27400118 S444 40m

HRT_ADD_11 62.44837703 34.25507902 S222 50m

HRT_ADD_12 62.63064569 34.24576085 S222 50m

HRT_ADD_13 62.30096908 33.38625728 S222 50m

FRH_ADD_1 62.12669606 32.38025973 S444 30m

FRH_ADD_2 62.09980097 32.44590522 S444 50m

NIM_ADD_1 61.86111272 30.94894447 S444 30m

Table 7 new sites information list

<END OF DOCUMENT>

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