08_RN31548EN10GLA0_Coverage and Capacity Planning

Coverage and Capacity planning 3GRPESS – Module 7

Module 7 – Coverage and capacity c apacity planning Objectives  fter t"is module t"e t"e #artici#ant s"all s"all $e a$le to%& ' (nderstand different #lannin) a##roac"es ' (nderstand s#ecific *S+, and *S(, #lannin) issues ' (nderstand different wa-s to o#timise ca#acit-

Module 7 – Coverage and capacity c apacity planning Objectives  fter t"is module t"e t"e #artici#ant s"all s"all $e a$le to%& ' (nderstand different #lannin) a##roac"es ' (nderstand s#ecific *S+, and *S(, #lannin) issues ' (nderstand different wa-s to o#timise ca#acit-

Content

' Site selection ' Co.era)e and interference #lannin) ' Ca#acit- #lannin) ' Co.era)e and ca#acit- im#ro.ement

Content

' Site selection ' Co.era)e and interference #lannin) ' Ca#acit- #lannin) ' Co.era)e and ca#acit- im#ro.ement

Site Selection – Motivation ' Sites re#resent e/#ensi.e lon) term in.estments for t"e o#erator ' Good site selection is critical to t"e #erformance of a 3G radio network ' Neit"er R o#timisation nor #arameter o#timisation can com#ensate for #oor site selection

' Site ac2uisition teams are often under #ressure to offer lar)e num$ers of sites w"ile radio network #lannin) teams are often under #ressure to acce#t lar)e num$ers of sites

' Site selection criteria are used to e.aluate w"et"er or not a site is suita$le

Site selection criteria ' Site selection criteria can $e di.ided into two cate)ories   nclusion criteria 6 7"et"er or not a site s"ould $e considered for inclusion wit"in t"e 3G radio network #lan

6 Sites wit" No9 s"ould $e included onl- unless t"ere are no alternati.es and t"e $enefit of introducin) t"e site is $elie.ed to :ustif- its cost

  ,rioritisation criteria 6 ,rioritise t"ose sites $ein) considered for inclusion 6 Select first sites wit" "i)"est num$er of ;es9

' s t"e site unlikel- to $e .er- dominant and unlikel- to cause si)nificant interference to nei)"$ourin) cells> s t"e $est ser.er area of t"e site unlikel- to $e fra)mented>

Site Inclusion criteria – Ipleentation A f t"e #ro#osed site is a rooft&to# siteB is t"ere

sufficient s#ace for t"e a##ro#riate antenna mountin)s to ensure t"at t"ere is ade2uate clearance from t"e roof&to#> 10 s t"e site safe from new nei)"$ourin) $uildin)s w"ic" ma- $e constructed in t"e future and w"ic" ma- $lock t"e main $eam of an antenna> 11  re t"e ca$lin) distances $etween t"e Node  ca$inet and t"e antennas reasona$le> 1! s t"ere access to leased lines or microwa.e links for transmission #ur#oses> 13 s t"ere a.aila$ilit- of t"e Node  #ower su##lre2uirements> 14 s t"ere s#ace to accommodate t"e Node  e2ui#ment> 15 re rental costs acce#ta$le> 1 s t"ere reasona$le access to t"e site>

' !C "eed up to #$$ ' ultiode "iber #$$ ' single ode "iber %&'

Site Prioritisation criteria 1 ! 3 4

s t"e site an e/istin) GSD site> +o antenna locations allow for c"an)es in a@imut"> +o antenna locations allow for c"an)es in "ei)"t> +o antenna locations allow sufficient isolation from ot"er antennasB e) GSD antennas>

5 s t"e site awa- from en.ironmentall- #rotected or "istoric areas>

 s t"e site unlikel- to re2uire an- s#ecial #ermits> = s t"e site unlikel- to cause #u$lic disa##ro.al> 8 +oes t"e site form a re)ular #attern wit" its nei)"$ours>

A s t"e site close to w"ere t"e traffic is e/#ected> 10 s t"e site ca#a$le of accommodatin) #otential ca#acit- u#)rades>

Existing site

Access

Antenna sharing Cost of site And so on…

location

Site Selection – Site In"oration ' Collect all necessar- information a$out site details   Site coordinatesB "ei)"t a$o.e sea le.elB e/act address   *ouse owner    Cell loading and t+roug+put estiation .it+in

Capacity ,iited

' Cell load  nitial load ' +L #ower  Da/ #ower  ' *S, t"rou)"#ut  Dinimum t"rou)"#ut

Coverage ,iited

Coparison o" nuber o" coverage sites vs> capacity re@uireent  cce#ta$le Coverage and capacity atc+ing )otal nuber o" sites

capacity evaluation

 eature selection for *S,

3> Coverage and capacity coparison ' Ser.ice a.aila$ilit' Co.era)e a.aila$ilit' Ca#acit- a.aila$ilit Not sufficient co.era)e co.era)e limitedFB

Con"iguration planning

decrease loadin) or add new sites



Capacity and coverage planning Coverage liited scenario

' Scenario is $ased on wron) estimation of eit"er ca#acit- or t oo less num$er of sites   +ecreasin) s-stem loadin) can $e utilised to accommodate less users in one cell    ddin) more sites to o.ercome co.era)e limitation ' Lower increase in )enerated interference floor  )reater cell ran)e  more users in eac" cell  )reater actual s-stem loadin)

Capacity liited scenario ' Ca#acit- demand is "i)"er t"an w"at can $e #ro.ided $- an initial num$er of Node sB resultin) to   Da/imum #ower or loadin) is e/ceededB no ser.ices a.aila$le   *S, t"rou)"#ut (L or +LF is lower t"an minimum t"rou)"#ut ' Cell ca#acit- must $e increased or t"e cell si@e decreasedB or $- addin) additional carriers ' Reduced cell ran)e  fewer users loadin) t"e cell   Cell ran)e decreasin) commonl- im#acts on num$er of sites ' Note% Ca#acit- can also $e increased wit" features

Co.era)e and Ca#acit- #lannin) are iterati.el- made to)et"er wit" Site selection and Confi)uration #lannin)