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7/30/2019 Wcdma Hspa Case Study v52 Aug2010
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Case study of WCDMA R99/HSPA
for planet v5.2
Peter Cheung
Technical Consultant,
Mentum HK
10 Aug 2010
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Summary
Set and configure soft launch site/sectors Define subscriber setting
equipment, service, subscriber type
Define environment
Create traffic map based on #sub or throughput demand Run Monte Carlo for R99 and HSDPA carriers
Analyze Monte Carlo results # served subscriber
Throughput per sector
Examine unserved subscriber reasons
Apply Monte Carlo cell load and re-run Network analysis CPICH pollution
Area coverage % of different bearer
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1a soft launch site/sectors group
Group Mongkok_ wcdma (green)
Each sector has carrier 1 and 3, both R99 + HSPA carriers
Activate carrier 1 as R99 ONLY
Activate carrier 3 as HSPA ONLY
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1b configure sectors for R99 carrier
Use max 472 OVSF for R99 only traffic for carrier 1,
with #R99 users = 100
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1c configure sectors for HSPA carrierUse max 472 OVSF for R99 only traffic for carrier 3 with
max # HS-DSCH codes=10 and max # HSPA user = 2
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2a setup R99 and HSPA bearerDefine R99 DL and UL bearer for required Eb/No at FER=xxx%
Define HSDPA DL bearer HS-DSCH Ec/Nt
Define HSUPA UL bearer E-DCH Ec/Nt
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2b setup equipment
Both HSPA equipment, where
WCDMA-R99 MS has ALL R99 bearer but no
HSDPA bearer
WCDMA-data-dongel has ALL R99 bearer +HSDPA bearer
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2c setup services2x CS services (12.2K voice and 64K data) with specified
individual loading and DL activity factor=50%
3x PS services (164K/128/384K data) with specified
individual loading and DL activity factor=100%
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2d setup subscriber typesR99 subscriber for outdoor usage for CS services with higher priority (1)
HSPA subscriber for indoor usage for PS services with lower priority (2)
10x scaling factor for BOTH
subscriber type to over-spread subscriber from traffic
map (i.e., to spread as many
subscriber as possible)
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3 setup environment Enter fast/slow fading margin
map default 4x planet clutter type to clutter names from map
e.g., disable some clutter, no indoor for water clutter
set clutter dependent DL orthogonal % (100% = no intra-cell interference, 0% = intra issame as inter-cell interference)
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4a Create traffic map
Tabulate site ID/sector ID/ # of
sub as an excel file (ie.. Traffic
target per sector)
Import excel file to planet
and map column
Import excel to operational data
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4b Create traffic map
Create CPICH
best server
Create traffic map with unit #sub/km2 and select
CPICH best server within mongkok area
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4c Create traffic map
assign different weight factor per clutter class
and generate traffic map
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5a Run Monte Carlo
Run MC for 2x subscriber type within
mongkok test area, and wait for MC run toconverge within 5%
Distribution of spread subscriber after MC
runs converged
after MC result is checked OK, apply cell
loading (i.e., write traffic power % and noise rise
back to sector config)
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5b Examine Monte Carlo results
Subscriber per sector/carrier examine block
reason and # served/unserved subscriber
compare unserved % with KPI
CDF of # served subscriber
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5b Examine Monte Carlo results
Global throughput MC report for
different service/environment
PDF of throughput
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5c Examine Monte Carlo results
Sort # served subscriber (from largest to
smallest) for 1 combination of carrier/subtype/service/environment
Create sector display scheme to
represent # served sub, apply to
sector on map windows
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6a CPICH pollution at environment
xx and subscriber equipment xxCPICH pollution between cells (at low CPICH Ec/Io, where no dominant
CPICH presents), typically resolve by increasing antenna downtilt
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6b coverage % for different bearer
Create statistics report based on HS-DSCH max achievable data rate and with
Analysis area = mongkok_area
Classified grid = best server grc file
Traffic map = xxx
Step size of data rate = 32k, 64k, 128k, 384k, 1M, 2M, 3M as different ranges
Optional map input to add extra columns in statistics
report (e.g., best server grc, traffic map)
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6c coverage % for different bearer
e.g., top 10x sector with highest coverage area %
within polygon within 2M~3M data rate range
e.g., area coverage % for different bearer of HS-DSCH