2 Cdma RNP Presentation-new
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1
CDMA1X Radio Network
Planning and Optimization
Yosuf Yang
Huawei Technologies Co., Ltd.
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2
Role of RNP
Huawei Landmarks in RNP
Planning and Optimization
Huawei Solutions In RNP
Agenda
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3
Better
coverage
LargeCapacity
Best resources
utilization
Future
proof
Best Quality
An Efficient Network
...
Wireless network demands
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4
Why is It Important?
Attention to
Capacity
Utilization
How to expand?
Interference
Traffic Unbalanced
About 500 BTSs and 3500TRX?
Evaluation
Enough Frequency
Capacity Waste
!
Optimization
With
Planning
An Example of the C City:
Excellent
Network
60%
Equipment
40%
RNP Service= +
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5
Role of CDMA
Huawei Landmarks in RNP
Planning and Optimization
Huawei Solutions in RNP
Agenda
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6
Wireless
Access
CDMA 450D
CDMA WLL
GSM
GSM900
GSM1800
2.5G
CDMA 2000 1X
GPRS
3G
WCDMA
CDMA EV
Wireless Series Products
A mature RNP Team
Over 600 engineers in more than 40 technical support offices for
round the clock services
Strict grade authentication of technical position qualification
A Mature Technical Team
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Technical Support System
Technical Support System
Provide Fast and Efficient RNP Services
Onsite
Engineer
R&D
Technical
Support
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K! It is done!
Dont worry!
We are here to
help you!
I know whats wrong
,just do like thisSystem is down
I cant solve it
Our support team always keeps on monitoring
Onsite Technical Support
Support Guaranteed
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With 8 years experience Huawei has many patents in RNP field.
Research Achievements In CDMA RNP
Huawei hybrid traffic model and planning approaches Patent
Huawei Link budget approaches and planning tools Patent
Huawei Neighbor List Auto-Generation System
Huawei RNP Platforms (SNA, Netstar, I-go)
Huawei Radio Resource Management Scheme Patent
Technical Guarantee
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Role of CDMA
Huawei Landmarks in RNP
Planning and Optimization
Huawei Solutions in RNP
Agenda
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Lets begin RNP
PN
Planning
PlanningScheme
Antenna
Selection
Simulation
Network
PlanningSoftware
BTSLayout
Link
Budget
CoveragePrediction
Capacity
Analysis
Network Planning
Just tell us your requirements on capacity and coverage, we are
ready to provide a whole planning scheme .
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Network Optimization
The general optimization procedure
Analysis &Optimization
DataCollection
Evaluation& Feedback
Network Performance Data
- Statistics Data (NMS, BSM)
- Field Measurement Data
- Subscriber Claims
We have rich project implementation experience in mobile field,
and have set up more than 10,000 base stations.
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Network planning software
PlaNETASSET
Tools Applied in RNP
Drive Test instrument
BlueroseAgilentParomara.
Spectrum Analyzer, SignalingAnalyzer
Best Tools in This Field
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Role of CDMA
Huawei Landmarks in RNP
Planning and Optimization
Huawei Solutions in RNP
Agenda
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Solutions in Different Environments
PlainsCanzhou, Tashkent in Uzbiekestan, Ufain Russia, Petersburg in Russia
HighlandsHunan, Yunnan, Guangxi
Dense citiesShantou, Minsk in Byelorussia
Road coverageFujian
Application Experiences in Various
Environments :
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Country ProjectRussia Moscow MSS
Russia Ufa CCB
Russia St.Petersburg Delta
Uzbiekestan UzbektelecomBelorussia Minsk
Kirghizia Iberiatel
Ukraine CST
Kazakstan Telecom
Yemen WLL
Algeria WLL
Overseas CDMA Applications
Cover the
whole
country
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Dense City S city
South China: S city
80,000subscribers, 35BTSs
Economic developed city, the hometown of LiJiacheng, with population of 4,680,000.
Many high-rises and condensed dwelling houses
Face the sea and against hills
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Link Budget---Work out the path loss under a certain
conditions, then get the cell radius with
Propagation model.
The maximum allowed path loss
Coverage area of a single site
The number of sites to meet the coverage
Coverage S City
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Coverage S City
mhbbpAdhhfL log)log55.69.44(log82.13log16.2655.69
Lp f
bh
mh
d
mhA
Path loss (dB)
BS antenna height (m)
MS antenna height (m)
Carrier frequency (MHz)
Distance between the BS and MS (Km)
MS antenna correction factor (dB)
)8.0log56.1()7.0log1.1( fhfA mhm
97.4)75.11(log2.3 2 mh hA m
Middle or small-size cities:
Big cities:
Frequency range: 150MHz to 2000MHz.
Propagation ModelOkumura-Hata & Cost 231
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Coverage S City
Propagation ModelTerrain Correction
In urban areas, adjusted as:
In rural areas (open country), adjusted as:
In rural areas (quasi open country), adjusted as:
C S C
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Tx/Rx
powerfading
allowanceAntenna
gain
Feeder
lossInterference
allowance
Antenna
gain
Path
loss
Forward link
Reverse link
Tx/Rx
powerSoft handoff
gain
Balance
Cell Radius
Coverage S CityLink Budget ---
Forward Link
C S Ci
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Coverage S CityLinkBudget---
Cell Radius
Item Dense Urban Urban Rural
Maximum power of traffic channel 21.55dBm 21.55dBm 21.55dBm
Loss of Feeder and Connectors 1.66dB 1.93dB 2.2dB
Antenna Gain 15dB 15dB 15dB
Sensitivity 127.48dBm 125.41dBm 125.41dBm
Noise factor 3.20dB 3.20dB 3.20dB
Demodulation Threshold Eb/Nt 3.5dB 3.5dB 3.5dB
SHO gain 3.7dB 3.7dB 3.7dB
Power control Margin 0.50dB 0.50dB 0.50dB
Interference margin 3.01dB 3.01dB 3.01dB
Penetration loss(Indoor planning) 25dB 20dB 15dB
Cell Load 50% 50% 50%
Required coverage probability 98% 98% 90%
MAPL 122.36dB 125.29dB 136.45dB
Antenna Height Of MS 1.5m 1.5m 1.5m
Antenna Height Of BS 40m 40m 50m
Cell Radius 1.45Km 1.76Km 7.49Km
Need 27
sites for
coverage
C i C l l i S Ci
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23
Capacity Calculation S City
Capacity Calculation ---
According to traffic model and the capacityof single site, get the number of sites to meetthe requirement.
The maximum throughput of single sector
The number of sites to meet the capacity requirement
Throughput= BHE *Data Rate*Activation Factor
= BHE *9.6kbps*0.4
C it C l l ti S Cit
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Capacity Calculation S City
)
)1(
)1(
(22
22
222
2
1
0
eM
eMXR
W
QBcdma
dtexQt
x
2/2
2
1)(
Cell Load 75%
Interference Factor 0.55
Second Order Interference Factor 0.086
Voice Activation Factor 0.4
Spread spectrum gain 21
Soft Block Ratio 2%
Traffic Channel Eb/Nt 5.08
Omni Site Sector Site
Sector Factor 1 Sector Factor 2.55
Traffic (Erl) 28.6 Traffic (Erl) 73
Average Throughput (kbps) 109.8 Average Throughput 280.3
Subscribers 953 Subscribers 2433
Need 35
sites
S i l C id ti S Cit
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Situation:
Special Considerations S City
Good coverage required
Very heavy traffic in dwelling areas
Solutions: Make detailed site survey
Adopt built-inantenna with 16tilt
P di ti S Cit
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Prediction S City
Import the TargetArea Digital Map
Define the Site Parameters
- Equipment Parameters
- Location Parameters
- System Parameters
- Propagation Model
Calculate the Path Loss
Si l ti S Cit
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Simulation S City
Run the Monte Carlo Simulation
- Initialize the mobile state
- Initialize the noise
- Calculate the power increase
- Iterate this procedure
Define the Traffic
- Traffic Distribution
- Mobile Parameters
Analyze the Output Report
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Simulation- S City
The Ec/Io in most areas are over -10dB
Ec/Io
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29The Rx_level in most areas are over -85dBm
Simulation- S City
Forward Rx_Level
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The MS Tx Power is usually lower than 0dBm in urban,
-10dBm in dense urban and -20 dBm near the BTS.
Simulation- S CityMs Tx Power
PN Offset Planning S Cit
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PN Offset Planning S City
Walsh Code
0 1-7 8-31 32 33
- 63
The different Sectoris distinguished bydifferent PN offsets.
300 312 480
0 PN # (timing offset) 511
PilotStrength(Ec/Io)
24 156
What is PN Offset?
PN Offset Planning S City
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PN Offset Planning S City
Sub-cluster 1Sector1 4 20 36 52 68 84 100 116 132 148 164
Sector2 172 188 204 220 236 252 268 284 300 316 332
Sector3 340 356 372 388 404 420 436 452 468 484 500
Sub-cluster 2
Sector1 8 24 40 56 72 88 104 120 136 152 168
Sector2 176 192 208 224 240 256 272 288 304 320 336
Sector3 344 360 376 392 408 424 440 456 472 488 504
Sub-cluster 3
Sector1 12 28 44 60 76 92 108 124 140 156
Sector2 180 196 212 228 244 260 276 292 308 324
Sector3 348 364 380 396 412 428 444 460 476 492
Sub-cluster 4
Sector1 16 32 48 64 80 96 112 128 144 160
Sector2 184 200 216 232 248 264 280 296 312 328
Sector3 352 368 384 400 416 432 448 464 480 496
Divide the PN Offsets into 4 sub-clusters
Unreasonable PN offset planning causes interference.
PN Offset Planning S City
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PN Offset Allocation
PN Offset Planning S City
Optimization S City
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Optimization S City
PN Pollution
Optimization
Down tilting,
Transmit power adjustment,
PN pollution areas!
Optimization S City
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Optimization S City
Neighbor List Missed
CAI messageBSM message
Date BSC BCP BTS BTS Name SECT T_PN COUNT
01/10/12 5 18 258A-100 0 184 135
01/10/10 1 16 64B-102 0 202 126
01/10/11 5 18 258C-88 0 184 124
01/10/11 5 27 267B-14 1 124 122
01/10/10 3 10 154D-209 1 4 121
01/10/9 3 10 154F-76 1 4 119
01/10/10 1 3 154A-35 1 202 111
01/10/10 5 18 154H-124 0 184 111
01/10/11 3 20 154B-322 1 60 10201/10/11 5 27 154J-3 0 440 102
01/10/11 4 12 154D-111 2 94 101
Reduce the call dropAddneighbor list
CAI Msg. BSM data
Optimization S City
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Optimization S City
External Interference
Test ToolSpectrum Analyzer
Shut Down The Illegal
Transmitter
Drive Test S City
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Drive Test S City
Ec/Io >= -12dB in 99.1% Area.
Ec/Io Result
Drive Test S City
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Rx>=-85dBm in 99.44% Area.
Drive Test S City
Rx_Level Result
Summary to Dense City
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Summary to Dense City
Careful site layout Avoid high site location
Right antenna selection
Set the proper power parameters
The subscribers increase rapidly
The system has been expanding
Summary to Other Scenario
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Summary to Other Scenario
Repeater solution
PN delay
Hot spot traffic
Power parameters
PN pollution
Coverage overlapPlains
Highlands
Roads
Application experiences in other environments
Consideration
Radio Network Optimization
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Radio Network Optimization
More information You can find more information about RF planning
and optimization on HUAWEIs homepage.
http://support.HUAWEI.com
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