3g sectorization (sector split)
TRANSCRIPT
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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