IBS Overview

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Rosenberger TCC | 2008-3-20 1

Rosenberger S-CellIn-Building Solutions

R

Rosenberger Asia Pacific Electronic Co., Ltd.


Today’ s topics

1. What is IBS

2. Why IBS…

3. IBS Benefit…

4. How to achieve IBS

5. How to design IBS

6. Why Rosenberger

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1.1. What is IBSWhat is IBSIBS = Wireless In-Building (Coverage) Solutions

CableJumper


Why IBS Why IBS ……

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2.2. Why IBSWhy IBSCompetition between

operatorsCoverage request from

usersPressure between revenue

and investment

Operators

investment

cost-effective and high quality network coverage

improve

Investment of operatorsService quality Retain and attract

users

improve


Subscribers distribution

Indoor traffic volume distribution

Traffic volume distributionTraffic volume distribution

2.2. Why IBSWhy IBS

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2.2. Why IBSWhy IBSCrowed Cities…Closely located Buildings…


3.3. Why IBSWhy IBS

Stadium

Hotel

Restaurant

Businessmansion

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IBS BringsIBS Brings……


3.3. BenefitsBenefits

Coverage

Solving the problem about no wireless signal area

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Capacity

Increasing simultaneous communication ability



Quality

Improving wireless signal environment on the upper floors


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Rosenberger S-Cell ® IBS Package

RF

Components

RF

ComponentsRepeaters

Amplifiers

Repeaters

Amplifiers

Cable

Assemblies

Cable

Assemblies

In buildingAntenna

In buildingAntenna

• RF Repeater• Fiber Optic Repeater• Line Amplifier

• Feeder Cable• Connector• Jumper

• Coupler• Splitter• Combiner• POI• Attenuator

• Yagi Antenna• Ceiling Mounted Antenna• Panel Antenna

- Site Survey

- System Design

- Installation

- Commissioning

- Troubleshooting

- Training


How to achieve IBSHow to achieve IBS……

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4. How to achieve IBS4. How to achieve IBS

BTS Repeater

BTS Repeater

Passive DASActive DAS

Optical fiber DASLeaky cable distribution

Passive DASActive DAS

Optical fiber DASLeaky cable distribution

Signal source Distributed Antenna System

Structure



• Increasing network capacity• Stable signal source

• Good signal quality

Deploy new BTS

Indoor antennaPower splittercoupler

Distributed antenna system

SC-RF BTS solution

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Application:

Traffic volume is high

RF environment is complex

Poor coverage


Deploy new BTS

20 users 50 usersNew BTS


Using wireless repeater

• Fast rollout• Low costs• Easy to accommodate


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Application:

Poor coverage with low traffic volumeThe site is compact area Optical fiber can not reach

Repeater Signal

SC-RF repeater solution


Using wireless repeater



• System reliability is higher

• Easy to maintain and upgrade

Passive DAS

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Active DAS

• Cost effective

• Large coverage area

• Flexible design andconfiguration

Line Amplifier

Line Amplifier


4. How to achieve IBS4. How to achieve IBSLeaky cable distribution

• Be suitable for use in tunnels or underground railway

• Broad frequency range，can supply more services

• Superior performance

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4. How to achieve IBS4. How to achieve IBSOptical fiber DAS

• Laser technology with high linearity• Low noise and high reliability• Broader frequency range• Small optical transmitting loss

Base Station Fibre Optic Master Unit

Antenna Antenna

Remote unit

Antenna Antenna

Remote unitRemote unit

Antenna

Antenna

2way splitter

Antenna

Remote unitAntennaAntenna

Antenna


How to design IBS projectHow to design IBS project……

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5. IBS Project Process5. IBS Project Process

Proposal Design

Site Survey

Design Principles

Project Construction

System Commissioning

Checking & Acceptance

System Maintenance


Site surveySite survey

Original signal informationBasic surveyBuilding location( longitude & latitude )

Installing condition

Storey

plane structure

wall direction

location of equipment room

LAC ( location area code )

CID ( cell identity )

Channel number

Signal strength

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CDMA System SpecificationsFER < 1 %

Outdoor overflow signal < -90 dBm

Typical power at antenna port 5 ~ 15 dBm

TX < - 10 dBm

Rx_level > - 85 dBm

Ec/Io in 90% of area > - 8 dB

Design PrinciplesDesign Principles


GSM system specificationsDrop-off rate < 1％

Edge level > -85 dBm

Interference protection in same frequency range

C/I ≥12 dB（without frequency hopping）

C/I ≥9 dB（ frequency hopping）

Uplink noise < -121 dBm

Typical power at antenna port 5 ~ 15 dBm ( except for lift well )

Outdoor overflow signal < -85 dBm

Hand-over success probability > 95 %

Area with RxQual better than level 3 > 95 %

Turn-on rate > 95 % (more than 95% area can be turned on)

Design PrinciplesDesign Principles

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Theory validationTheory validationFormula of indoor space transmission loss

Formula of space transmission lossL (dB) = 20lgd (m) + 20lgf (MHz) - 28 +αd is the path between the antenna and the testing point,

f is the carrier frequency,

α is transmission loss in : glass ＝ 6~10dB partition ＝10~15dB prefab board ＝20~30dB

30 meters

S

(1) Power on antenna port：8dBm

(2) 30 meters free space transmission loss: -60dB

(3) Antenna gain：G=2.1dBi

(4) Partition loss + multi-path loss: -25dB

(5) The signal strength of point (S): PR=8 +2.1-60 -25= -74.9dBm


Proposal designProposal design

Signal sourceSignal source

Distribution of electric fieldDistribution of electric field

Equipments specificationsEquipments specifications

Cabling linkCabling link

Transmission lossTransmission loss

Construction difficultyConstruction difficulty

Acceptance criterionAcceptance criterion

7 factors to be concerned in proposal design

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Proposal designProposal designProposal design

General Design Engineering Material list

Project general

Foundation

Engineer scale

Principle

System specs.

Equipment specs.

Site survey

Source selection

Antenna location

System configuration

Simulation

Spillover analysis

Device room

Cable layout

Component installation

Equipment list

Accessories list

Tech. Specs.


Base Transceiver StationMicro Base Station TransceiverTapping from the outdoor base station or macro-cell

IBS design generally consists of two main considerations.

• Signal source:

• Distributed antenna system (DAS):Passive DistributionActive Distribution(Booster, Fiber optical repeater)Antenna types (Omni-directional Antenna, Directional Antenna) and Leaky Coaxial Cable.

Proposal designProposal design

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Typical Micro Base Station

Main Building Building - South Wing

Antenna

Micro-BTS

Basement 2

Basement 1

1st floor

2nd floor

3rd floor

Coupler/Splitter


FOR—Point to Multi-Point

BTS

Master Unit

Rx Tx/Rx Remote unit

BTS

Master Unit

Rx Tx/Rx

Remote unit

Remote unit

Remote unit

Remote unit

Remote unitSingle fiber transmission by Wavelength Division Multiplex (WDM). One Master Unit supports up to 4 Remote Units.

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Typical Wireless Repeater

Antenna

RepeaterBuilding

Base station Transceiver Site

Donor Antenna


System Outdoor Base Station

Outdoor AntennaBase Transceiver Station(Outdoor type)

AntennaCoupler

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POI - Point of Interface

Multi-system Combination

ANT2

GSM1800-1

GSM1800-3

GSM1800-2

Load

ANT2

Monitor2

ANT1

ANT1

Monitor1

GSM1800-1

GSM1800-3

GSM1800-2

Multiple system / operatorsShared DAS, lower investmentsIdeal for large buildings, subways, expo, sports center.


•Complete Product Offer – Technical innovation– Versatile and wide range of product lines– Expertise in turnkey solutions

•Customer Oriented Approach– Consultative sales & customer service team– Customized products & solutions

•Consistent Global Quality Standard– Localized production fully consistent to Rosenberger’s global quality standards– System Performance Guarantee

•Value-added services– Flexible production planning system – Strong logistic chain.– Local regional warehouses

The One-Stop Shopping Experience at Rosenberger !

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Thank you!Thank you!Thanks for your attentions!Thanks for your attentions!

Documents

IBS Overview