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Be respectful

Keep promises

e inspiring

Make it easy

3G Sectorization(Sector Split)

Pros & Cons

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• Capacity Expansion in 3G/4G

 Carrier Addition (ot !ossi"le since #! $as only one carrier

 e& 'ite deployment (ig$ Cost of implementation due to

*!E+ etc,%

 M-M* (Ma.or impact on peak data rate only, Cell edge t$ro

increased as M-M* is aaila"le in good c$annel conditions%

'ector splitting (0sed in areas &$ere rapid capacity addition

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3G Sector Split

•The 6-sector network gain comes from the cell number

gain: 100%•The network capacity gain is less than 100% because

there is more interference between cells.•Coverage enhancement ue to antenna gain resulting

in aroun !0% more coverage

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Challenges in Sector Split

•  'ector *erlap#$e sector *erlap in 2o&results in poor Eco and Cnull areas near t$e site,

•  eig$"or *ptimiation#$e cell splitting from 3 to per site re1uire $ig$er numneig$"or relations to "e decell and re1uire more prec

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Why Split Antenna

65 °3 sectorgeneralantenna

33 °6-sectorantenna

6-sector splitantenna

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Antenna Pattern(Twin Beam vs 3 Sector Antenna 6

• 6oss of coerage foot

direction due to 7 dB

ull,

• -mproed coerage i

due to 789dB $ig$er

2irection of #&in Beam

• Eco degradation in M

to oerlap of t&in "e

site

650 BW

 Antenna

Twin Beam

380 BW

 Antenna

Loss of Coverage in

Bore Direction dueto 5 dB low gain

Degraded c!o

due to overla" area

of Twin #eams

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Sectori!ation Capacity Tra"eo## 

• According to '$annon:s 6a&) increasing capacity in a g"and&idt$ re1uires ;ireless 'erice !roiders to improe tnoise ratio and/or increase fre1uency reuse,

• -n 3G and 4G 6#E net&orks) noise containment in t$e => paExternal noise from a ariety of sources ? including multi

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#$anks