4. How to achieve IBS Structure PassiveDAS DAS Passive ActiveDAS DAS Active Optical fiber DAS Optical fiber DAS Leakycable cabledistribution distribution Leaky
BTS BTS Repeater Repeater
Signal source
Distributed Antenna System
TCC
Rosenberger
| 2008-3-20
15
| 2008-3-20
16
4. How to achieve IBS Deploy new BTS • Increasing network capacity • Stable signal source • Good signal quality
Distributed antenna system
Indoor antenna
SC-RF BTS solution Rosenberger
Power splitter coupler
TCC
8
4. How to achieve IBS Deploy new BTS Application: z
Traffic volume is high
z
RF environment is complex
z
Poor coverage
New BTS 20 users
50 users
Rosenberger
TCC
| 2008-3-20
17
TCC
| 2008-3-20
18
4. How to achieve IBS Using wireless repeater • Fast rollout • Low costs • Easy to accommodate
Rosenberger
9
4. How to achieve IBS Using wireless repeater Application: z
z z
Poor coverage with low traffic volume The site is compact area Optical fiber can not reach
Repeater Signal
SC-RF repeater solution
Rosenberger
TCC
| 2008-3-20
19
TCC
| 2008-3-20
20
4. How to achieve IBS Passive DAS • System reliability is higher • Easy to maintain and upgrade
Rosenberger
10
4. How to achieve IBS Active DAS • Cost effective
Line Amplifier
• Large coverage area • Flexible design and configuration
Rosenberger
Line Amplifier
TCC
| 2008-3-20
21
TCC
| 2008-3-20
22
4. How to achieve IBS Leaky cable distribution • Be suitable for use in tunnels or underground railway • Broad frequency range,can supply more services • Superior performance
Rosenberger
11
4. How to achieve IBS Optical fiber DAS • Laser technology with high linearity • Low noise and high reliability • Broader frequency range • Small optical transmitting loss
Antenna
Antenna Antenna
Antenna
Remote unit
Antenna Remote unit
Antenna Antenna Base Station
Fibre Optic Master Unit Antenna Antenna
Antenna Remote unit
Remote unit
Rosenberger
2way splitter
TCC
| 2008-3-20
23
TCC
| 2008-3-20
24
How to design IBS project…
Rosenberger
12
5. IBS Project Process Site Survey Design Principles Proposal Design Project Construction System Commissioning Checking & Acceptance System Maintenance
Rosenberger
TCC
| 2008-3-20
25
Site survey Basic survey Building location ( longitude & latitude ) Storey plane structure wall direction
Original signal information LAC ( location area code ) CID ( cell identity ) Channel number Signal strength
location of equipment room Installing condition
Rosenberger
TCC
| 2008-3-20
26
13
Design Principles CDMA System Specifications FER
- 85 dBm
Ec/Io in 90% of area
> - 8 dB
TCC
Rosenberger
| 2008-3-20
27
Design Principles GSM system specifications Drop-off rate
< 1%
Edge level
> -85 dBm
Interference protection in same frequency range C/I
≥12 dB(without frequency hopping)
C/I
≥9 dB( frequency hopping)
Uplink noise
< -121 dBm
Typical power at antenna port
5 ~ 15 dBm ( except for lift well )
Outdoor overflow signal
< -85 dBm
Hand-over success probability
> 95 %
Area with RxQual better than level 3
> 95 %
Turn-on rate Rosenberger
> 95 % (more than 95% area can be turned on) TCC
| 2008-3-20
28
14
Theory validation Formula of indoor space transmission loss (1) Power on antenna port:8dBm (2) 30 meters free space transmission loss: -60dB (3) Antenna gain:G=2.1dBi (4) Partition loss + multi-path loss: -25dB 30 meters
(5) The signal strength of point (S): PR=8 +2.1-60 -25= -74.9dBm
S Formula of space transmission loss L (dB) = 20lgd (m) + 20lgf (MHz) - 28 +α d is the path between the antenna and the testing point, f is the carrier frequency, α is transmission loss in : glass = 6~10dB
partition =10~15dB
prefab board =20~30dB
TCC
Rosenberger
| 2008-3-20
29
| 2008-3-20
30
Proposal design 7 factors to be concerned in proposal design
Signal Signal source source Distribution Distribution of of electric electric field field Equipments Equipments specifications specifications Cabling Cabling link link Transmission Transmission loss loss Construction Construction difficulty difficulty Acceptance Acceptance criterion criterion
Rosenberger
TCC
15
Proposal design Proposal design
General
Project general
Tech. Specs.
System specs.
Foundation Engineer scale
Equipment specs.
Principle
Design Site survey Source selection Antenna location System configuration
Engineering
Material list
Device room
Equipment list
Cable layout Accessories list
Component installation
Simulation Spillover analysis
TCC
Rosenberger
| 2008-3-20
31
Proposal design IBS design generally consists of two main considerations. • Signal source: ¾ ¾ ¾
Base Transceiver Station Micro Base Station Transceiver Tapping from the outdoor base station or macro-cell
• Distributed antenna system (DAS): ¾ ¾ ¾
Rosenberger
Passive Distribution Active Distribution(Booster, Fiber optical repeater) Antenna types (Omni-directional Antenna, Directional Antenna) and Leaky Coaxial Cable.
TCC
| 2008-3-20
32
16
Typical Micro Base Station Antenna
3rd floor 2nd floor
Coupler/Splitter
1st floor
Basement 1
Micro-BTS Basement 2
Main Building
Building - South Wing
Rosenberger
TCC
| 2008-3-20
33
TCC
| 2008-3-20
34
FOR—Point to Multi-Point Remote unit
Tx/Rx
Rx
Master Unit Remote unit BTS
Remote unit
Tx/Rx
Rx
Master Unit Remote unit BTS Remote unit
Single fiber transmission by Wavelength Division Multiplex (WDM). One Master Unit supports up to 4 Remote Units. Rosenberger
Remote unit
17
Typical Wireless Repeater
Donor Antenna
Antenna
Base station Transceiver Site
Repeater Building
Rosenberger
TCC
| 2008-3-20
35
TCC
| 2008-3-20
36
System Outdoor Base Station Outdoor Antenna
Base Transceiver Station (Outdoor type)
Coupler
Rosenberger
Antenna
18
Multi-system Combination POI - Point of Interface GSM1800-1
Load
GSM1800-3
GSM1800-2
Multiple system / operators Shared DAS, lower investments Ideal for large buildings, subways, expo, sports center. ANT1
ANT2
Monitor1 GSM1800-1 ANT1 GSM1800-3 Monitor2
GSM1800-2
Rosenberger
ANT2
TCC
| 2008-3-20
37
| 2008-3-20
38
The One-Stop Shopping Experience at Rosenberger !
•Complete Product Offer – Technical innovation – Versatile and wide range of product lines – Expertise in turnkey solutions
•Customer Oriented Approach – Consultative sales & customer service team – Customized products & solutions
•Consistent Global Quality Standard – Localized production fully consistent to Rosenberger’s global quality standards – System Performance Guarantee
•Value-added services – Flexible production planning system – Strong logistic chain. – Local regional warehouses Rosenberger
Thank you for interesting in our services. We are a non-profit group that run this website to share documents. We need your help to maintenance this website.