3.ibs survey and design

7/30/2019 3.IBS Survey and Design

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Part 3art 3IBS Survey and Designg

ro ess ona o a o u on

for Wireless Network Optimization


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Survey

Optimization

Documents


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Survey

Target

PreparationBuildingSurvey

SpaceLossTest


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Checkbuildingcapability,scale,floorplan,

ceilin ,wellforelectronic,e ui mentroom,todesigndonorequipment,antennalocation,

, .


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Investigate indoor/outdoorsignal coverage

statusandhandoverdata,todeicidecoveragerangeandcoveragequalityandIBSsystem

solution


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Testandverifywallandobstructionmaterial

penetrationperformancetodecideantennalocation,outputpowerandcoverageradius.


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Authorizationletterfromoperator

Networkparametersurroundbuilding

Site transmittype Donorsourcetype

CoverageareaandcoverageKPI


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Getbuildingfloorplanfrombuildingowner

Buildin floornumberandhei ht

Buildingstructureandscaleeachfloor

Elevator quantityandrunrange


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TestEquipment


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TestEquipmentandaccessories

SignalsourceCompass GPS Powermetertapemeasure

Safetyshoe,cap,belt Antenna

&jumper

camera


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SiteNameandphoto

SiteLocation:GPSdata,address,surroundenvironmentandphoto

Buildin hei ht total floor total area s uare

meterand360degreephotoinbuildingrooftop

Buildingfunctionblockdescription,includingmain,

Coverageareasquaremeteandfloors


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Building passage,stairslocation

Elevatorlocation,elevatorsharewell,operationfloor,usage

Well for electronic osition uantit

Roomdecorationandmaterials,ceilingstructure

ower ngsys em

Grounding

system


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Equipmentinstallationroom,grounding,

owerin andinstallcondition

Electronic

GSMRepeater WCDMARepeaterPowerSwitch

ChannelInput

Combiner

JLY

GroundingOutput


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Donorantennainstallationlocation,installation

conditionandcableroutetoindoor Lighteningprotection


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Serviceantennainstallationlocation&installation

conditionOmniAntennainstallation

(Ceiling)

Antennainsideelevator


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OMCDataCollect

DonorBTS:BSIC CID CGI BCCH TCH Ho in

Neighbor Cell Parameter

Power ControlParameter

Trafficstatus


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WalkTest

Testfordifferentfloorstructure chooseoneflooratevery3samestructurefloor

,

Toiler,Underground,Passage

Foropenspace,testroutea ongspacee gean cross lineincenter

Indoor/outdoorhandovertest


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TestRequirements

Samefloortest u anddownfloor enetrationtest,elevatorpenetrationtest

,

onefloor

,area

Signa ea agetest,10m ar rom oor

Antennaoutputpowersettodesignpower


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TestResult


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GeneralPrinciples

equ rement

SignalSourceSelectionAntennaPosition

DASDesi n

Topology


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IBSDesign

1 3 5 642 7

Principles SignalSource

DAS TopologyAntenna

LocationKPI Optimization


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Meetcoveragequa ityan usercapacity

requirement Balance indoorandoutdoornetwork

develo ment

EasytoreconfigureBTSoraddnew and

expand

s ou e a e n o sys em orfutureusage


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IBSsigna s ou esmoot incoveragearea,

andbeleastsignalleakagetoavoidhandoverwithoutdoornetwork

IBSstructureshouldbesim l andeas to

install,noteffecttooriginalstructureanddecorate

IBStopologyshouldbeeasytooverlayand

adjustment


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Businesstype&sensitivities12.2K Voice 64K Data 384K Data

2G BusinessBusiness Type Main Business Low Speed Business

Sensitivities -110 -105

Business T e Basic Business Video Business Hi hS eed Data

3GBusiness

Sensitivities -125 -120 -112

Businesstype share Remarkvoice 80% AMR

Video 15% AV

Dat 5% PS


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AntennaoutputPower 3dBdifferencebetweenantennas15dm

maximum

output

power

Accesssuccessrate 99% successaccess networkin90%coveragearea

Quality BLER


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Capacity


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Capacity


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Capacity

Traffic


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BTS OutputPowerBalance

Out ut owerBalance

BTSoutputpower43dBmpilotoutput

5WMicroBTS,pilotoutputpower:27Bm

2WMicroBTS,pi otoutputpower:23Bm

RRU

output

power

42dBm,

pilot

output

power:33dBm


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100%

Relative cell size

128 kbps

80%

144 kb s

40%

64 kbps

ps 144 kbps

64 kbps

64 kbps

144 kb s

20%High traffic 800 kbps

Small coverage

Larger coverage

64 kbps

0%

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7

Traff ic load factor


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RFRepeater

Stablereceivelevel>65dBm Ec/Io>7dB

DonorAntennaInstallationHeight


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DonorSignalStrengthvs. Angle


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DonorSignalStrengthvs. Time


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Coveragerequirement:power&radius

MLCRequirement:minimumcouplingloss EMCRequirement

Isolationrequirement

Handoverorleakagerequirement

Application

Case

:Lobby,

floor,

elevator,

ground,

spotarea


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SystemMLCRequirement

CouplingLoss >70dB(>67dB@indoor)@UEminimumtransmitpower>50dBm;

SpaceLoss L2=38dBm@2000M,distance=1m;

CableLoss L1>29dBm

Antennaoutputpower


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18

20

14

16

Ptx, min = -50dBm

10

12

B)

6

8

nr(

4

35 40 45 50 55 60 65 70 75 80

0


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Buildingmaterialblock


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LS=10Lg(4df/c)2

=20Lg(4/c)+20Lgd(m)+20Lgf(MHz) =27.56+20Lgd(m)+20Lgf(MHz)

.

Distance 1m 5m 10m 12m 14m 15m 20m 25m 30m

Loss 38.46 52.44 58.46 60.04 61.38 61.98 64.48 66.42 68.00


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Example


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SystemStructure

S litter Coupler


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SystemStructure


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Topology(BusinessBlock)


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Amplifierapplication


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Poor Covera e

Signalleakage

SignalSourceSelection

DASDesign


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Problemdescriptionantennalocateoutside

of office,cannotcoverelevatorlobb well. Antennaoutputpowerislow

SolutionAdd antennainlobbyorincreaseantennapower


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Problemdescription:Signalleakage

Mobileinoutsidevehiclecalldro b onsitetest becausemobilehandovercannotontime

userBefore Optimization

OmniOmniAntennaAntenna


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Solution

Reduceantennaout ut ower ad ustcableroutepowerorinsertattenuatorbeforeantenna)

Followmultiantenna lowoutputpowerdesign

After Optimization


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Indoor/OutdoorHandoverKeypoints:

Reselection Idlemode Handover@callmode

E evatoran floor

Wherehappen

ParkingentryWindowshandover

Lobbyanoutdoor


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Elevator handover

Usin samecellassi nalsourceatallelevators Usingpanelantenna indifferentfloors

Cell 2

Elevatorwellwell

Elevato

rf3

Cell 1

u oor e


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Toextendcoveragehandoverareaineveryfloorlobby

ELEAVTOR LOBBY BEST

ELEAVTOR LOBBYHANDOVER BETTER

ELEAVTOR LOBBYHANDOVER BAD


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Indoor/Outdoorhandover

Ad ustantennaout ut owerandconfi urationBTSparameter

Handoverarea

Indoor/outdoor handover diameter:3-5m


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Indoor coverage

F4/5/6

Indoor coverage

F1/2/3

Optimization

F7/8/9

F1/2/3

Indoorcovera e Optimization

F1 2 3

F4/5/6F4/5/6F4/5/6 F7/8/9

F1/2/3 F1/2/3

F1/2/3

Coverage


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Inbuildingsolutionproposal

Solutiondescri tion Coverageplan

Powerbudgetcalculation

Proposedantennalocationphotograph

S stem

la out

on

floor

lan

ACAD Measurementresults


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o ater a s: DetailsofHowmanyantennas(Omni,Panel),

Cable t e 1 2 or 7 8 Splitters,Couplers

Macro/MicroBTSAccommodation TypeofBTS(Micro,Macro,flexitalketc.,basedonoutputpower)

BTSLocation(tobeplacedinwhichfloor?IsthereanyotherBTSinstalledb othernetworko erators?

BTSconfiguration(1+1+1or2+2+2)

ElectricalpowersupplyforBTS Powertobetappedfrom?

HowtobringinE1connectionfortheBTS

Should we ut a se arate electrical meter ? MCB re uired ? Etc.