
2/12

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Coverage simulation

Test (CW) measurement

Site construction

Coverage measurement

Tilts angle optimization

Cell design

Drive survey andoptimization

Commercial launch

Site acquisition

Procedure o Cell Planning andProcedure o Cell Planning and

Optii!ationOptii!ationSite lanning

! Service coverage e"pansion plan# quality improvement plan

! Construction plan of ne$ Site for a year

! Consider $here to deploy the ne$ Site

! Consider the required antenna height

! Select %uilding or land to ma&e to$er

! Coverage estimation %efore Site construction

%y test transmission (non'cluster measurement)

! Select antenna type

! zimuth %eam optimization

! i" default tilts

! Decide antenna height (in to$er Site)

! Coverage measurement $ith actual Site equipment after Site construction

(non'cluster measurement)

! Coverage optimization at o$n cell

! Minimization of inter'cell interference %et$een ad*acent cells

! eriodic drive survey (cluster measurement)! +f drop call or quality degradation is occurred# optimization should %e at any time

,

,

,,

,


3/12

3



Quality improvement & Coverage expansion! irst approach of lanning give priority and decide target quality to each area

! Second approach secure capacity for target quality

Target Quality! +ndoor use - .igh traffic area (Dense ur%an# /r%an)

! +n'car use - 0o$ traffic area (Su%ur%an# 1ural area)

"a#ic approac$ or %ite Planning"a#ic approac$ or %ite Planning

Traffic

Interference Margin

Cell Raius

!I"!#$%

M'## #'R"(

#'R"( M'##

Target Quality

)Penetration #oss*

In+car ,se)-.*

Inoor ,se)/0.*

Rural area

Sub-urban

Urban

Dense urban

Coverage simulation

Test measurement

Site construction



Cell design


Commercial launch

Site acquisition

ite Planning


4/12

4



C+C. 1SC 2343&%ps M1 Coverage (S+1)

! Chec& estimated Coverage and 1eceived Signal o$er on

Simulation tool! The parameters of the simulation are roughly considered

! ntenna tilt angle $hich is calculated in advance is directed to the

intermediate point %et$een ad*acent Sites4

! Consider $here to deploy a ne$ Site

! Consider the required antenna height

Co&erage #iulation '( %iulation toolCo&erage #iulation '( %iulation tool

Coverage simulation

Test measurement

Site construction



Cell design


Commercial launch

Site acquisition

Site lanning


5/12

5



5riginal measurement data %y test measurement

fter antenna design using WS'6

! Coverage estimation %efore Site construction

(non'cluster measurement)

! Simple sleeve antenna is used for test transmission

! Continuous Wave is generated from Signal 7enerator

! 1eceived signal %y scanner

! Test measurement data can import into Simulation tool

! 1eplace the sleeve antenna $ith the actual antennas

on simulation tool

! 1eceived po$er distri%ution is calculated %y the pattern

difference of each antenna type and tilt angle

! Change azimuth and select optimal azimuth

! Select optimal antenna type and default tilt setting

%ased on that calculated data

Test measurement

'ntenna Design

Te#t ea#ureent and )ntenna de#ign Te#t ea#ureent and )ntenna de#ign

Coverage simulation

Test measurement

Site construction



Cell esign


Commercial launch

Site acquisition

Site lanning


6/12

6



%ector confguration%ector confguration

Low traffic High traffic Ultrahightraffic

Strategic

Aspects

Importance

(little)

Importance

(great)

Capacit

!-sector preparator stations

"-sector can#i#atestations

!-sector can#i#atestations

$-sector can#i#atestations

Ultra lowtraffic

Sector configuration is selected %ased on capacity#

coverage# and strategic aspects

! 2'sector candidate Site


! 9'sector preparatory Site (ossi%le to change from ad*acent Site coverage)


8'sector equipment is replacea%le to 9'sector equipment

! ossi%le to change from 8'sector to 9'sector $hen capacity is increase4

(:ut it need to e"change antenna)

!2'sector Site equipment is different from 8;9'sector equipment4+f capacity is over# it need to change Site equipment or plan ne$ Site

Coverage simulation

Test measurement

Site construction



Cell esign


Commercial launch

Site acquisition

Site lanning


7/12

7



! Coverage confirmation %y non'cluster measurement after Site construction

! 'C+C. transmission from the Site equipment! 1eceived po$er measurement %y scanner

! 5ptimize coverage %y ad*usting tilts at o$n Site

! 'C+C. 1SC from o$n Site is compared $ith the 1SC from ad*acent Sites at

each point

! Minimize inter'cell interference %y ad*usting tilts at o$n Site and ad*acent Sites

d*acent sits

tilts ad*ustment

Co&erage ea#ureent and tiltCo&erage ea#ureent and tilt

optii!ationoptii!ation

Coverage simulation

Test measurement

Site construction


Tilts angle optimi1ation

Cell design


Commercial launch

Site acquisition

Site lanning

5$n sits

tilts ad*ustment

+nterference decrease

tilts ad*ustment


8/12

8



'rea Purpose

Dense ur%an $ith hightraffic

' nalysis of interference

.igh$ay# National road 'Confirmation of neigh%or list and overlap4

'ursue disconnection point

'1epetition of quality deterioration

:ay area# Sea (for ship)#1iverside# mountains

'+nvestigation of interference

Stations '


9/12

9



Scanner

0ogging tool

7SInsie of survey ve2icles

,( is insie of

survey ve2icle

'ntenna of scanner

is on roof top

DoCoMo

Connect to STN

C for Scanner

%ur&e( *e$icle Confguration%ur&e( *e$icle Confguration

Coverage simulation

Test measurement

Site construction



Cell design


Commercial launch

Site acquisition

ite Planning


10/12


11/12

11



:061 is suddenly up %efore drop call

point

ind out causes of :061 arise4

nalyse data right %efore drop call

points4

0o$ 1SC level1SC level '2>8 or

more d:m?

6ｃ ;No '28 or more

d:m?+nterference

S+1 @49 or more d:m?

+nterference from a distant siteS.5 active set is

proper?

+nterference

re there poor 6c;+o sites in

active set?S.5 failure (addition・ delete)

re 1SC level and

path loss in same order?

Transmitting offset value is

unsuita%le

1SC and S+1 of Scanner

is a%ove the measuring

threshold?

No Scanner data

＝Not synchronize

+f all is 5A # might %e failure in net$or&4

TC of /6 is proper? TC failure

T2e cause presume

C h e c & i t e m s

・Chec& 1SC level $ith Scanner

・ d*ustment of the tilt

・lanning ne$ site

R +f a sector $ith a %ad 6c;No# do$n or

up tilt to change S.5 point

R Signals ma"imum 8 S.5 other

signals causes interference4 Need to

reduce another arriving signals

・/plin& signal canBt reach or it

%ecome interference

・Do$n tilting of distant site sector4

・1emove from neigh%or list

・ or changing of S.5 point# $e

thin& a%out ad*ustment do$n or up tilt

and change transmission offset

value

・ or changing of S.5 point# $e

thin& a%out ad*ustment do$n or up tilt

and change transmission offset value


・lanning ne$ site


・ 1emove from neigh%or list

Coverage simulation

Test measurement

Site construction



Cell design


Commercial launch

Site acquisition

ite Planning

)nal(#i# Procedure and)nal(#i# Procedure and

Counterea#ureCounterea#ure

NTT D C M C fd i l


12/12

12



radio network planning and optimization_ntt

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