c16 wcdma rnp indoor distribution system design issue1.0
DESCRIPTION
WCDMA RNP Indoor Distribution System DesignTRANSCRIPT
Wireless Curriculum Development SectionWireless Curriculum Development Section
ISSUEISSUE
OWJ101106 WCDMA RNP Indoor OWJ101106 WCDMA RNP Indoor Distribution System DesignDistribution System Design
1.01.0
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Objectives
To introduce an general Idea on Design Process for Indoor Distribution System
To provide Some typical solutions for indoor distribution system
To know how to select equipment type
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Outline
Introduction Indoor Coverage Scenarios Design Process for Indoor Distribution System Equipment Type Selection Some Typical Solutions List of Materials & Cost Estimation Appendix:
Micro NodeB RRU Some Examples of DAS Design
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Why We need indoor Distribution System?
Coverage Problems Outdoor macro cell cannot satisfy indoor coverage
High penetration loss RSCP ( less than -95dBm )
Jumeira Beach Hotel Burj Al Arab Hotel.
Capacity Problems Most of the calls: indoor calls Heavy traffic: some special buildings Outdoor macro cells cannot meet the indoor capacit
y requirement DWTC: GITEX.
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Why We need indoor Distribution System?
RSCP > -85dB: 10% RSCP > -95dB: 25% RSCP > -105dB: 70%
For example: Burj Al Arab Hotel, 27th flooroutdoor macro cell: SC154
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Why We need indoor Distribution System?
RSCP > -85dB: 5% RSCP > -95dB: 24% RSCP > -105dB: 64%
For example: Jumeira Beach Hotel, 8th flooroutdoor macro cell: SC152
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Why we need to provide indoor coverage?
Better cooperation between 3G and 2G Without UMTS indoor coverage, 3G service cannot be used at
indoor environment (VP, high speed data service) When mobile reselect from 3G to 2G, location update happens.
This will make a lot of impact on system and network. E.g. increasing system signaling load. Also, before mobile finish the location update, this mobile cannot be the MT. Call failed will happen fluently.
The inter-system measurement and handover will always take more time than intra-system handover and reselection. If the signal fading fast, it will not have enough time to perform handover or reselection, and call drop or no service will happen.
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Why we need to provide indoor coverage? Indoor coverage can be divided into two part:
Normal: to use the outdoor macro cells to provide 1st wall indoor coverage of the network
Dedicated: to use the dedicated indoor solutions to provide the deep indoor coverage of the network.(e.g. important building, basement, elevator, etc.)
In the course, we will focus on dedicated indoor solution and DAS sharing analysis between 3G and 2G.
Micro NodeB
antenna
splitter
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Difference between UMTS and GSM
For GSM: Less frequency resource is
occupied; Less sensitive for the overlap
between cells;
For UMTS: Without dedicated carrier for
indoor, sometimes difficult to control the interference;
Difficult to control the overlap between cells and specific solutions has to be thought of.
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Outline
Introduction Indoor Coverage Scenarios Design Process for Indoor Distribution System Equipment Type Selection Some Typical Solutions List of Materials & Cost Estimation Appendix:
Micro NodeB RRU Some Examples of DAS Design
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Different Indoor Scenarios - Villa & Apartment
VillasPropagation CharacteristicsSmall area each floor
The building is very low
Wall penetration loss, Typical 10dB
Standalone
ApartmentPropagation CharacteristicsSquare each floor < 1000m2
Building height < 30m
Penetration loss in one floor, Typical 5-20dB
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Different Indoor Scenarios - Open hall Airport terminal
(1)Propagation CharacteristicsLarge area each floor > 2000m2Building floor less than 5In floor penetration loss is low
(2)Features of traffic distributionLarge data traffic throughput
Shopping Mall(1)Propagation CharacteristicsSquare each floor > 1000m2Building height < 30m
Penetration loss in one floor, Typical 5-20dB
(2)Features of traffic distributionMainly voice , including VP
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Different Indoor Scenarios - Multi floor building
Office building(1) Propagation CharacteristicsLarge area each floor > 1000m2
Building floor> 15, or height > 50m
In floor penetration loss, Typical 5-20dB
(2) Features of traffic distributionMainly voice , including VP
Hotel(1) Propagation CharacteristicsSquare each floor > 500m2
Building floor> 15, or height > 50m
Penetration loss in one floor, , Typical 5-20dB
(2) Features of traffic distributionLarge data traffic throughput
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Different Indoor Scenarios - Event triggered large area Conference centre, Exhibition hall, Football stadiums etc. (1) Propagation Characteristics
Large area each floor > 2000m2Building floor : very few, usually only oneIn floor penetration loss is low
(2) Features of traffic distributionTraffic density is event triggered
In usual time , the traffic density is very low
If important event happens , the traffic density may rise sharply to above 1000 erl/km2it is necessary to reserve enough capacity
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Different Indoor Scenarios - Basement car park
Basement car park
(1) Propagation Characteristics
Large area each floor
Completely closes area for each floor
In floor penetration loss, Typical 5-20dB
(2) Features of traffic distribution
Usually very low traffic density
Mainly voice
Generally, this kind of area is covered by repeater, however, micro NodeB or RRU can also be used.
Indoor distributed antenna system is not necessary.
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Examples: different solutions
RRU:RemoteRadioUnit
BTS 3812
Softer H/O area
f1f0
BTS 3812
Softer H/O area
f1f0
Digital signal transmitted by optical , NO receive sensibility and power LOSS
DAS:DistributedAntennaSystem
Micro BTSE1/STM-1 cascade
Indoor
Antenna
RRU
Indoor DAS is available
Indoor DAS not available;
covered by antennas directly
covered by RRU
Outdoor Macro NodeB
Nearby macro NodeB + RRU
Micro NodeB
Macro NodeB+RRU
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Outline
Introduction Indoor Coverage Scenarios Design Process for Indoor Distribution System Equipment Type Selection Some Typical Solutions List of Materials & Cost Estimation Appendix:
Micro NodeB RRU Some Examples of DAS Design
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Design Process for Indoor Distribution System
Design Preparation Coverage and Capacity Dimensioning Interference & Performance analysis Indoor Distribution System Solution Indoor Verification Test
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Design Preparation: Step 1
Step 1: Coverage Target Analysis Coverage Range
Rough Coverage Range
Coverage Requirement of the network Area coverage probability requirement
Capacity Requirement of the network How many subscribers
Cell load
Investment Scale of the Project
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Design Preparation: Step 2
Step 2: Survey on the outdoor cell Coverage Outdoor cells may interference the indoor distribution system
Pilot pollution may occur More serious interference in higher stories necessary to carry out indoor signal test
signal strength and distributions in the building
Stories Selection for Test: Suggestion 1~2 stories for the lower part of the building
1~2 stories for the middle part of the building 1~2 stories for the upper part of the building
Drive Test Tools e.g. Agilent 6474A device
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Design Preparation: Step 3
Step 3: Preparation of Building Drawings Obtain Building Drawings
Coverage Target Storey
Plan Drawing Elevation Drawing Strong and Weak Electric Wells
Existing Transmission in the building
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Design Preparation: Step 4
Step 4: Indoor Survey of the Building Collect enough information for indoor distribution system
Determine the exact coverage range Identify Coverage Requirement for different storey Take enough digital Photographs
Indoor details and Building Profile
Identify building materials, thickness of floor / ceiling / wall Estimate the penetration loss
check Obtainable transmission, power supply, cable resource, and requirements from building management
Check if GSM/CDMA indoor distribution system already exists WCDMA will probably share the same indoor distribution system
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Design Preparation: Step 5
Step 5: Indoor CW Test Obtain indoor propagation characteristics Correct indoor propagation model (if possible) Estimate the penetration loss
Inner partition walls
Floors and ceilings
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Design Process for Indoor Distribution System
Design Preparation Coverage and Capacity Dimensioning Interference & Performance analysis Indoor Distribution System Solution Indoor Verification Test
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Coverage & Capacity Dimensioning (1)
Indoor Propagation Model: Keenan-Motley model
PL(d0) is free space loss at the d0 distance;
d is the distance between transmitter and receiver; d0 is the reference distance; (normally d0 is 1m); n is the average path loss attenuation exponents; Kfi stands for the number of the floors of type i; Kwj stands for the number of the walls of type j; Lfi stands for the penetration loss of the floor of type i; Lwj stands for the penetration loss of wall of type i; a : linear penetration loss factor. typical value 0.2dB/m d1: breakpoint. Typical value is 65m.
0 032.45[dB] 20 lg [km] [MHz]PL d d f
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Coverage & Capacity Dimensioning (2)
Indoor Propagation Path Loss f=2000MHz, d=1m
Path loss = 38 dB f=2000MHz, d=30m
Path loss = 80 dB f=2000MHz, d=60m
Path loss =88 dB f=2000MHz, d=80m
Path loss = 92 dB
Note: assume path loss attenuation exponent is 2.8
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Coverage & Capacity Dimensioning (3)
Uplink CS12.2 CS64 PS64 PS128 PS144 PS384
Max Power of UE 21 21 21.00 21.00 21.00 21.00
Atenna Gain of UE 0 0 0.00 0.00 0.00 0.00
NF of NodeB Rx 2.2 2.2 2.20 2.20 2.20 2.20
bit rate of service 12.2 64 64 128 144 384
EbvsNo in UL 5.4 2.7 2.4 1.9 1.9 1.6
Sensitivity in UL -125.54 -121.04 -121.34 -118.83 -118.32 -114.36
UL loading 50% 50% 50% 50% 50% 50%
noise rise 3.01 3.01 3.01 3.01 3.01 3.01
SHO Gain 1.50 1.50 1.50 1.50 1.50 1.50
fast fading margin 2.31 3.14 3.14 3.38 3.38 3.65
max CL in UL 142.72 137.39 137.69 134.94 134.43 130.20
PL_CL - PL_DL 1.37 1.37 1.37 1.37 1.37 1.37
max CL in DL 144.09 138.76 139.06 136.31 135.80 131.57
GSM1800 BCCH TxPwr 43 43 43 43 43 43
Combiner/Diplexer Loss 1 1 1 1 1 1
Frequency Correction Loss (feeder) 2 2 2 2 2 2
Outdoor Interference Margin 10 10 10 10 10 10
Min. Required RxLev Threshold -88.09 -82.76 -83.06 -80.31 -79.80 -75.57
3G Shares GSM DAS: GSM1800 BCCH
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Coverage & Capacity Dimensioning (4)
Capacity Dimensioning Choose appropriate signal resource
Macro NodeBMicro NodeBRRU
Different power and base band resource The basic capacity formula
refer to dimensioning training material Indoor cells can support more users than ou
tdoor macro Interference from other cell: smaller Non-orthogonal factor: smaller
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Importance of CW test Make sure that indoor propagation model is only a reference for
indoor coverage design. To perform a CW test in the building is always recommended.
antenna
CWtransmitter
CW DTResults
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Near far effect is a very important issue that we have to consider carefully, especially when we use some high gain antenna to provide a big coverage at indoor environment.
The problem of this is that the users at cell edge may be blocked by the users close to the antenna.
The typical scenario of this will happen at: The coupling loss difference between two users is more than 50 dB.
Near far effect
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The coverage analysis results will decide the DAS (Distributed Antenna System) structure.
The capacity analysis will decide which signal resource will be used, macro-NodeB, micro-NodeB, RRU, repeater, etc.
Different equipment will have different power and base band resource. Which to use depend on the capacity analysis.
The basic capacity formula is as usual. For more details, please refer to dimensioning training material
In indoor environment, the non-orthogonal factor and other cell interference will reduce a lot comparing with outdoor macro. Normally indoor cells will absorb more users than outdoor macro.
Summary: coverage and capacity
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Design Process for Indoor Distribution System
Design Preparation Coverage and Capacity Dimensioning Interference & Performance analysis Indoor Distribution System Solution Indoor Verification Test
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Analysis: Intra-frequency Interference There is interference between outdoor and indoor intra-
frequency cells. There is interference between indoor intra-frequency cells.
Solutions:
Interference Analysis: intra-system
For floors under the coverage of different cells, install
the DAS antennas in one vertical plane to avoid intra-
frequency interference between the floors.
On the contrary, for floors under the coverage of one cell,
install the DAS antennas at different positions to make the
signal strength even on the floors.
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Solutions: Enhancing indoor signal strength
near window areas The indoor signal strength
should be 6dB higher or more than the outdoor best cell signal.
However, indoor signal leakage shall be minimized.
e.g. In the soft handover area on 1F, the indoor signal is 6dB lower than the outdoor best cell signal beyond certain range such as beyond 5 m from the external wall. In none handover area the indoor signal is 6dB lower than the outdoor best cell signal beyond certain range such as beyond 3 m from the external wall.
Interference Analysis: intra-system
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The inter-system interference can be classified into:
Spurious emission of a system falling in the receive band of other systems
Inter-modulation products of TX signals falling in the receive band of other systems
TX signals and spurious emission of a system blocking other receivers
Spurious interference is a focus for DAS shared by WCDMA, GSM900 and WLAN.
Interference Analysis: inter-system
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Solutions: Multi-band Diplexer is applied in DAS shared by WCDMA,
DCS1800 and GSM900 to suppress the inter-system interference. If the isolation of the diplexer is not enough, add a filter to the corresponding interfering base station. Normally, the acceptable spurious received by receiver i
s recommend to be 10 dB below noise floor. It means 0.4dB noise rise.
Generally speaking, the rejection in other system RX band can be 50dB for the diplexer. The accurate rejection depends on the spurious of the base station.
MSs’ interference in base stations and interference between MSs can be omitted if the antenna positions are designed properly.
Interference Analysis: inter-system
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Scenario Entrance of building Lower floors
Suggestion 1: Intra-frequency coverage
Subscribers perform soft handover when passing through the entrance of the building. The handover success ratio is high.
Outdoor cell and indoor cell should be configured as neighboring cells.
Recommended when traffic is light in initial phase to ensure the service quality .
Solution to problems of handover between cells
Outdoor cell and indoor cell are neighboring cells.
Performance Analysis- Handover
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Scenario Entrance of building Lower floors
Suggestion2 Inter-frequency coverage
There is no interference between outdoor and indoor cells
Subscribers perform hard handover when passing through the entrance . The handover success ratio is relatively low.
Outdoor cell and indoor cell should be configured as neighboring cells.
Recommended when traffic becomes heavy.
Outdoor cell and indoor cell should be configured as neighboring cells
Solution to problems of handover between cells
Performance Analysis- Handover
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Performance Analysis- Handover
Scenario lift
Suggestion1 A single cell covering lift well The lift and 1F are under the
coverage of the same cell. Out-lift/in-lift handover is not
required on 1F.
Recommended in most of deployment
Solution to problems of handover between cells
CELL2 range
CELL2 range
CELL2 range
CELL1 range
CELL1 range
CELL1 range
Cell
1range
lift
CELL1 signal CELL2 signal
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Scenario Lift
Suggestion2 Combining signals of
multiple cells The lift well is a soft
handover area. Success ratio of out-lift/in-
lift on all floors is high. Higher cost
Recommended in lower building where high quality of QOS is demanded
Not recommended when there are relatively many cells in the building
Performance Analysis- Handover
Solution to problems of handover between cells
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Scenario Area near window in higher
floor
Suggestion 1 Intra-frequency coverage
near window Configure the cell on higher
floors and the outdoor cell as neighboring cells to avoid call drop near windows.
Enhance the signal level near windows on higher floors to decrease soft handover events.
Recommended when traffic is light in initial phase to ensure the service quality .
Performance Analysis- Handover
Solution to problems of handover between cells
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Scenario Area near window on higher
floors
Suggestion 2 Inter-
frequency coverage near window No special consideration is
required for the little interference between outdoor and indoor cells.
Do not configure the indoor cell on higher floors and the outdoor cell as neighboring cells when the higher and lower floors are under the coverage of difference cells.
Recommended when traffic becomes heavy.
Performance Analysis- Handover
Solution to problems of handover between cells
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Design Process for Indoor Distribution System
Design Preparation Coverage and Capacity Dimensioning Interference & Performance analysis Indoor Distribution System Solution Indoor Verification Test
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Indoor Distribution System Solution (1)
Antenna layout diagram for each floor Determine Antenna Quantity Determine Antenna Installation Location
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Indoor Distribution System Solution (2)
Estimate Transmit Power from each Antenna Example
Passive Distribution System
BTS Output Power: 5W
7/8” Cables
1/2 Power Splitter
Ceil-mounted Omni Antenna
Each Floor: two Antennas
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Indoor Distribution System Solution (3)
Estimate transmit power from each antenna
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Indoor Distribution System Solution (4)
Detailed Network Topology Diagram
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Indoor Distribution System Solution (5)
Detailed Cabling Diagram Vertical View and Plan Layout Indicate Feeder Cable Length Splitters Location Couplers Location
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Design Process for Indoor Distribution System
Design Preparation Coverage and Capacity Dimensioning Indoor Distribution System Solution Interference & Performance analysis Indoor Verification Test
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Indoor Verification Test
To Guarantee the indoor signal quality Install antennas in the right positions Make sure each antenna transmits continuous
waves as the expected power level Choose enough test points and make signal power
level test Make indoor drive test if possible Analyze the test data and check if the design meets
the coverage requirements If not, take measures to improve the design
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Outline
Introduction Indoor Coverage Scenarios Design Process for Indoor Distribution System Equipment Type Selection Some Typical Solutions List of Materials & Cost Estimation Appendix:
Micro NodeB RRU Some Examples of DAS Design
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Equipment Type Selection
Equipments Type Signal Source Equipment Type Feeder Cable Type Indoor Antenna Type Splitter Type Coupler Type
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Equipment Type Selection: Signal Source
Signal Source Equipment Type macro NodeB micro NodeB RRU
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Equipment Type Selection: Feeder Cable
Feeder Cable Type Feeder Cable Loss
7/8” cable feeder: 6.1dB/100m
1/2” cable feeder: 10.7dB/100m
Construction Feasibility Minimum curvature radius requirement
25.4cm for 7/8” cable feeder
12.7cm for 1/2” cable feeder
Burning Point Requirement
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Equipment Type Selection: Indoor Antenna (1)
Some restrictions for indoor antenna Short distance coverage Transmit power restriction Installation space restriction Vision pollution restriction
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Equipment Type Selection: Indoor antenna (2)
Indoor Antenna Types Omni antenna
Ceiling-mounted omni antenna
Bar-type omni antenna
Directional Antenna
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Equipment Type Selection: Omni Antenna (1)
Basic Requirement for Omni Antenna Spectrum Range: 800M~2500MHz Gain: 2dBi Horizontal beam width: 360 Vertical beam width: 90 Polarization: vertical polarization VSWR: less than 1.5 Down tilt: no
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Equipment Type Selection: Omni Antenna (2)
Some Existing Omni Antenna Types KATHREIN
Type: 80010137
Frequency Range: 876-960/1710-2500MHz
Polarization: vertical polarization
Gain: 2 dBi
DECIBEL Type: DB784SM5N-SY Db Diamond
Frequency Range: 806-2200MHz
Polarization: vertical polarization
Gain: 2.1 dBi
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Equipment Type Selection: Directional Antenna (1)
Basic Requirements for Directional Antenna Spectrum Range: 800M~2200MHz Gain: 7 dBi Horizontal beam width: 90 Vertical beam width: 60 Polarization: vertical polarization Front-to-back ratio: > 20 dB VSWR: < 1.5
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Equipment Type Selection: Directional Antenna (2)
Some Existing Directional Antenna Types KATHREIN
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Equipment Type Selection: Directional Antenna (3)
Some Existing Directional Antenna Types ANDREW
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Equipment Type Selection: Directional Antenna (4)
High Gain Directional Antenna Types KATHREIN
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Equipment Type Selection: Splitter (1)
Splitter Type Performance parameters
Bandwidth Requirements
Isolation Requirements
1/2 splitter 1/3 splitter 1/4 splitter
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Equipment Type Selection: Splitter (2)
KATHREIN Splitter
TYPE
Output Ports
Attenuation
Insertion loss
Inter-modulation
Freq. Range
VSWR
K737303
2
3 dB
<0.05dB
<-150dBC
800-2200MHz
<1.5
K737305
3
4.8 dB
<0.05dB
<-150dBC
800-2200MHz
<1.5
K737307
4
6 dB
<0.05dB
<-150dBC
800-2200MHz
<1.5
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Equipment Type Selection: Coupler (1)
Coupler Type Performance parameters
Bandwidth Requirements
Isolation Requirements
7 dB coupler 10 dB coupler 15 dB coupler
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Equipment Type Selection: Coupler (2)
KATHREIN Coupler
TYPE
Attenuation
Insertion loss
inter-modulation
Freq. Range
VSWR
K63236061
7 / 1.0dB
<0.05dB
<-150dBC
800-2200MHz
<1.5
K63236101
10.4 / 0.4 dB
<0.05dB
<-150dBC
800-2200MHz
<1.5
K63236151
15.1 / 0.1dB
<0.05dB
<-150dBC
800-2200MHz
<1.5
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Equipment Type SelectionComparison between splitter & coupler
Splitter Equal Power Distribution
Coupler Non-equal Power Distribution
Splitter Better for antennas in the same floor
Coupler Better for antennas in different floors
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Outline
Introduction Indoor Coverage Scenarios Design Process for Indoor Distribution System Equipment Type Selection Some Typical Solutions List of Materials & Cost Estimation Appendix:
Micro NodeB RRU Some Examples of DAS Design
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Some Typical Solutions (1)
DAS:DistributedAntennaSystem
Micro BTSE1/STM-1 cascade
Indoor
Antenna
Signal source: micro NodeB
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Some Typical Solutions (2)
RRU:RemoteRadioUnit
BTS 3812
Softer H/O area
f1f0
BTS 3812
Softer H/O area
f1f0
Digital signal transmitted by optical , NO receive sensibility and power LOSS
Signal source: nearby macro NodeB + RRU
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Some Typical Solutions (3)
RRU
Indoor DAS is available
Indoor DAS not available;
covered by antennas directly
covered by RRU
Signal source: macro NodeB + RRU
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Outline
Introduction Indoor Coverage Scenarios Design Process for Indoor Distribution System Equipment Type Selection Some Typical Solutions List of Materials & Cost Estimation Appendix:
Micro NodeB RRU Some Examples of DAS Design
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List of Materials & Cost Estimation
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Outline
Introduction Indoor Coverage Scenarios Design Process for Indoor Distribution System Equipment Type Selection Some Typical Solutions List of Materials & Cost Estimation Appendix:
Micro NodeB RRU Some Examples of DAS Design
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Micro NodeB (1)
Scenarios for micro NodeB Indoor Coverage Medium/Low Traffic Areas Blind Spots
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Micro NodeB (2)
Parameters for micro NodeB Support maximum 2 cells Transmission: E1 or STM-1 Power supply: AC Capacity: 64 CE Transmit power: 2*10W / 2*20W Weight: < 55kg Dimension: 460*350*700 (cm)
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RRU (1)
maximum 4 cells can be cascaded Maximum 100 km for 3 or 4 cascades Maximum 12 cells Maximum 2 cells per RRU
2TRX 2TRX
1TRX 1TRX 1TRX 1TRX
1TRX 2TRX 1TRX
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RRU (2)
Parameters for RRU Support maximum 2 cells Transmission: Optical Fiber Power supply: AC Capacity: 256 CE Transmit power: 2*10W / 2*20W Weight: < 50kg Dimension: 460*350*700 (cm) Cascade: max 4 cells, max distance 100km
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79
Comparison: RRU and micro NodeB
Handover RRU: Softer HO between RRU and host NodeB micro NodeB: Soft HO between micro NodeBs
Capacity One RRU: maximum 256 CE One micro NodeB: maximum 64 CE
Transmission RRU: Optical Fibers Micro NodeB: E1 or STM-1
O&M RRU: from host macro NodeB
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80
To verify the performance of WCDMA DAS, Huawei deploys a trial network on 9F through 14F in Jinmao Tower and plans soft and softer handover areas.
Jimao Tower is a skyscraper of 88 floors.
Omni antennas, directional antennas and leakage cables are adopted to satisfy the special DAS requirements in Jinmao Tower. (Leakage cables are usually used in special closed scenarios).
Application of WCDMA indoor coverage solution
Trial DAS in Jinmao Tower (Dec.2002)
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81
14F
13F
12F
11F
10F
9F
NODB1
NODB2
NODB3
二功分器
二功分器
(1/ 2" 60m)8. 4dB
4dB
4dB
(1/ 2" 7m)1dB
(1/ 2" 35m) 5dB
(1/ 2" 25m) 3. 5dB
(1/ 2" 40m) 5. 6dB
走线井
走线井
走线井
走线井
走线井
走线井
(1/ 2" 7m)1dB
(1/ 2" 50m) 7dB(1/ 2" 50m) 7dB
(1/ 2" 60m) 8. 4dB
(1/ 2" 7m)1dB
(1/ 2" 60m) 8. 4dB
ant1( )办公区
ant1( )办公区
ant2(1407)
ant2(1307)
ant1( )办公区
ant2(1207)
六小区(有泄漏电缆)
二功分器
4dB
二功分器
4dBant1( )办公区
ant2(1107)
二功分器 ant1( )办公区
ant2(1007)
(1/ 2" 40m)5. 6dB
(1/ 2" 5m)0. 7dB
(1/ 2" 7m)1dB
(1/ 2" 50m)7dB
(1/ 2" 15m)2. 1dB
(1/ 2" 30m)4. 2dB
(1/ 2" 50m)7dB
RLKU158-50J : 13/8"Longi tudinal Loss: 5.7dB/100m
Coupl i ng Loss 95%: 68dB
(1/ 2" 5m)0. 7dB
(1/ 2" 30m)4. 2dB
(1/ 2" 50m)7dB
RLKU158-50J (55m)二功分器 RLKU158-50J (65m)
4dB
4dB
Functional diagram of indoor network in Shanghai Jinmao TowerTrial DAS in Jinmao Tower(Dec.2002)
Application of WCDMA indoor coverage solution
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Security Level: Internal
82
Cabling diagram on one floo
r of Shanghai Jinmao Tower
Trial DAS in Jinmao Tower(Dec.2002)
Application of WCDMA indoor coverage solution
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Security Level: Internal
83
Trial DAS in Jinmao Tower(Dec.2002)•Distribution of pilot signals
•Percentage of points with good pilot coverage is 98.14%.
•Scrambling code : 0 and 128
Application of WCDMA indoor coverage solution
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84
Existing DAS: Signal source: GSM Micro
BTS DAS: passive Applies two antennas on each
of:- 3F and 4F of building A- 1F through 4F of building B
Applies one antenna at the lift entrance:
- On 1F and 2F of building A
- In building B Applies one antenna for each
lift
Application of WCDMA and GSM DAS
CMCC DAS of WCDMA/GSM in Dongguan Mobile mansion(Apr.2003)
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85
Add BTS3802COnly three wall-
mounted antennas need be changed to support 2GHz bands.
CMCC DAS of WCDMA/GSM in Dongguan Mobile mansion(Apr.2003)
Application of WCDMA and GSM DAS
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86
BTS 1
BTS 2
Hybrid Combiner
NodeBGSM900/WCDMA
Diplexer
Splitter
Modification Way Using diplexer to combine GSM and WCDMA signals after the
hybrid combiner
Components replaced: antenna
Components added: splitter, diplexer
Positions and mount of antenna unchanged
BTS 1
BTS 2
Hybrid Combiner
The existing GSM DAS Modified DAS
CMCC DAS of WCDMA/GSM in Dongguan Mobile mansion(Apr.2003)
Application of WCDMA and GSM DAS
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87
Specifications of diplexerFrequency band band1 800~1000MHz
band2 1700~2170MHz
Insertion loss Port1-port3 0.16dB
Port2-port3 0.26dB(1700~2000MHz)
0.4dB(2000~2170MHz)
Isolation Port1-port2 >43dB(900~1000MHz)
>50dB(2000~2170MHz)
Power handlingband1 <250W
band2 <150W
Impedance 50 ohm
Connector typeDIN( 7-16)
VSWR <1.3
Size 126*274*107mm
Weight 3.3kg
Temperature-55~60℃
Specifications of splitter
Frequency band800~2200MHz
Insertion loss 0.05dB
VSWR <1.15
Connector type DIN(7-16)
Impedance 50 ohm
PIM <-150dBc
Size 294*82*82mm
Weight 1.5kg
Signal source: BTS3802C
Specifications of components replacedCMCC DAS of WCDMA/GSM in Dongguan Mobile mansion(Apr.2003)
Application of WCDMA and GSM DAS
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Security Level: Internal
88
CMCC DAS of WCDMA/GSM in Dongguan Mobile mansion(Apr.2003)
Application of WCDMA and GSM DAS
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Security Level: Internal
89
WCDMA signal distribution before redeployment (3F)
Percentage of points with good pilot
coverage is only 6.01%.
WCDMA signal distribution after redeployment(3F)
Percentage of points with good pilot coverage is 98.37%.
CMCC DAS of WCDMA/GSM in Dongguan Mobile mansion(Apr.2003)
Application of WCDMA and GSM DAS
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Security Level: Internal
90
After the WCDMA deployment–GSM system keeps working normally.–GSM system keeps its wide coverage.–Voice services are good.
Test pointLevel( dBm)
before WCDMA deploymentLevel( dBm)
after WCDMA deploymentQuality Voice quality Call dropping
Fire staircase on 4F -77 -81 0 Legible None
Lift entrance on 4F -40 -42 0 Legible None
Meeting room on 4F -52 -51 0 Legible None
Manager room on 4F -49 -53 0 Legible None
Right fire staircase on 3F -65 -72 0 Legible None
Lift entrance on 3F -40 -43 0 Legible None
Hall on 3F -53 -53 0 Legible None
Lift entrance on 2F -49 -50 0 Legible None
Right fire staircase on 2F -78 -80 0 Legible None
Right fire staircase on 1F -58 -62 0 Legible None
Meeting room on entresol -62 -62 0 Legible None
CMCC DAS of WCDMA/GSM in Dongguan Mobile mansion(Apr.2003)
Comparison between GSM coverage performances before and after WCDMA deployment
Application of WCDMA and GSM DAS
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91
CMCC DAS application of WCDMA,GSM and WLAN in Dongguan Huihuang mansion
existing DAS: Signal source: GSM Micro
BTS
Covers the underground
park, 1F, half of 3F, and 4F
through 7F
Applies one antenna for
each lift
Application of WCDMA ,GSM and WLAN DAS
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Security Level: Internal
92
Functional diagram of existing GSM DAS in Huihuang mansion
CMCC DAS application of WCDMA,GSM and WLAN in Dongguan Huihuang mansion(Oct.2003)
Application of WCDMA ,GSM and WLAN DAS
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Security Level: Internal
93
Functional diagram of DAS shared by GSM, WCDMA and WLAN in Huihuang mansion
CMCC DAS application of WCDMA,GSM and WLAN in Dongguan Huihuang mansion(Oct.2003)
Application of WCDMA ,GSM and WLAN DAS
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94
CMCC DAS application of WCDMA,GSM and WLAN in Dongguan Huihuang mansion(Oct.2003)
Using dual band diplexer to combine GSM and WCDMA signals
Using GSM-WCDMA/WLAN diplexer to combine WLAN signal with GSM and WCDMA signals
Components replaced: splitter, antenna
Components added: diplexer, splitter, coupler
Application of WCDMA ,GSM and WLAN DAS
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Security Level: Internal
95
Component Old type number New type numberNumber of components replaced in GSM/WCDMA DAS
Number of components replaced in GSM/WCDMA/WLAN DAS
Ceiling antenna IXD-360/V03-NW-A IXD-360/V03-NN 0 44
Ceiling antenna IXD-120/V06-NB IXD-360/V03-NN 1 1
Wall-mounted antenna
IWH-085/V09-NG ODP-090/V11-NW 8 8
Wall-mounted antenna
IWH-090/V08-ND ODP-090/V11-NW 5 5
2-way splitter RD-52N/NP-F1 RD-52N/NP-F2 0 19
3-way splitter RD-53N/NP-F1 RD-53N/NP-F2 0 11
4-way splitter RD-54N/NP-F1 RD-54N/NP-F2 0 2
Coupler RC-5NK/NK/NK-06F1 RC-5NK -06F 0 5
Coupler RC-5NK/NK/NK-10F1 RC-5NK -10F 0 1
List of replaced components
CMCC DAS application of WCDMA,GSM and WLAN in Dongguan Huihuang mansion(Oct.2003)
Application of WCDMA ,GSM and WLAN DAS
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96
Lower costs for changing GSM DAS to GSM/WCDMA DAS 14 components replaced, 15% of the total components
16% of the total costs
Higher costs for changing GSM DAS to GSM/WCDMA/WLAN DAS 96 components replaced
68% of the total costs
Installation costs are 10-20% of the total component costs.
CMCC DAS application of WCDMA,GSM and WLAN in Dongguan Huihuang mansion(Oct.2003)
Application of WCDMA ,GSM and WLAN DAS
Confidential Information of Huawei. No Spreading without Permission.
Security Level: Internal
97
the WCDMA signal distribution before redeployment
CMCC DAS application of WCDMA,GSM and WLAN in Dongguan Huihuang mansion(Oct.2003)
Application of WCDMA ,GSM and WLAN DAS
The WCDMA signal distribution after redeployment
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98
the uplink BLER distribution of CS12.2K the downlink BLER distribution of CS12.2K
As is shown, above 99% areas satisfy the service quality demand
CMCC DAS application of WCDMA,GSM and WLAN in Dongguan Huihuang mansion(Oct.2003)
Application of WCDMA ,GSM and WLAN DAS
Confidential Information of Huawei. No Spreading without Permission.
Security Level: Internal
99
Handover test result in the hall of WCDMA system
Service type Handover type Total Handover times Successful handover times Failing handover times Successful handover ratio
CS12. 2 k Soft handover 587 587 0 100%
Inter-frequency handover
108 108 0 100%
CS64K VP Soft handover 643 643 0 100%
PS64K Soft handover 304 304 0 100%
Inter-frequency handover
129 125 4 96.90%
PS144K Intra-frequency hard handover
135 127 8 94.07%
CMCC DAS application of WCDMA,GSM and WLAN in Dongguan Huihuang mansion(Oct.2003)
Application of WCDMA ,GSM and WLAN DAS
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Security Level: Internal
100
Out-lift/in-lift handover test result of WCDMA system
Service type Handover
type
Number of
handover
events
Number of
successful
handover
events
Number of
failed
handover
events
Handover
success
ratio
CS12. 2 k Softer
handover
423 419 4 99.05%
CS64K VP Softer
handover
280 275 5 98.21%
PS64K Softer
handover
226 226 0 100%
As is shown, the success ratio of out-lift/in-lift softer handover is above 98%
CMCC DAS application of WCDMA,GSM and WLAN in Dongguan Huihuang mansion(Oct.2003)
Application of WCDMA ,GSM and WLAN DAS
Confidential Information of Huawei. No Spreading without Permission.
Security Level: Internal
101