20130214_Small Cells.pdf
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Transcript of 20130214_Small Cells.pdf
1 © Nokia Siemens Networks 2011
Solución Small Cells para cobertura y
capacidad
2 © Nokia Siemens Networks 2011
Small Cells to Adress Coverage and Capacity
3 © Nokia Siemens Networks 2011
Coverage Gaps / Traffic Hotspots
Need to improve coverage or add
capacity on traffic hot spots
Broadband coverage
Coverage gap or holes
GSM
covera
ge
Traffic hot spots
Broadband coverage
Planning and
Optimization
needed for layering
4 © Nokia Siemens Networks 2011
Small Cell for Capacity
• Micro-cell coverage depends on the
isolation from the macro-cell
• Place the micro cell as close as
possible to the centre of the traffic hot-
spot
• On average micro-cell will offload 20%
to 30% from the macro cell traffic
• To minimize Soft Handover overhead,
try to find the highest possible isolation
from the macro layer
• Micro cell can share the same
frequency with the overlapping macro
cell
Macrocell RSCP level
[dBm]
On street co-channel 3G
microcell radius [m]
-85 < 200 -75 100 -65 75 -55 < 50
5 © Nokia Siemens Networks 2011
The Flexi Multiradio BTS 3 main building blocks to a complete GSM/WCDMA/LTE Site
Flexi EDGE 18/36 TRX
System Module
Multimode System Module (WCDMA/LTE)
Flexi 3-Sector RF Module (GSM/WCDMA/LTE)
• 1 Gbps throughput
• Multiband support
• Multimode support
• Dedicated and concurrent mode SW defined
• High Capacity (18/36 TRX)
• Multiband support
• Optimized for GSM/EDGE
• Highest integration density level
• GSM/EDGE/WCDMA/HSPA/LTE defined by SW
• Dedicated and concurrent mode
• Single Band units: 850, 900, 1800, 1900
• 60W output per sector with Multi Carrier Power Amplifier (MCPA)
Flexi 3 sector RFM
(GSM/WCDMA/LTE)
Flexi EDGE 18/36 TRX
System Module
Multimode System Module (WCDMA/LTE)
6 © Nokia Siemens Networks 2011
• RX Diversity Sharing WCDMA-GSM (Phase 1)
• GSM and WCDMA use dedicated
RF modules
• One System Module per technology
• Share antenna system
• diversity between the 2 RFMs is shared using RX
Div output connector
• RF Sharing WCDMA-GSM (Phase 2)
• Shared RF module for GSM and WCDMA
• One System Module per technology
• Share antenna system
RF Sharing WCDMA - GSM
LNA
LNA
Du
ple
xer
RX
MCPA TX
RX main
RX div
RFM1
RXMC
GSM SM
WCDMA SM
X
RF Sharing
LNA
LNA
RX
MCPA
TX
RX main
RX div
RFM1
RXMC
LNA
LNA
RX
MCPA TX
RX main
RX div
RFM2
RXMC
X GSM SM
WCDMA SM
Du
ple
xer
Du
ple
xer
RX Diversity Sharing
RU20
GSM up to 6+6+6 TRX @ 10W
WCDMA 1+1+1 @ 40W
GSM up to 2+2+2 TRX @ 10W
WCDMA 1+1+1 @ 40W
RG10
RU30
RG10
7 © Nokia Siemens Networks 2011
Flexi Multiradio BTS: 2G + 3G BTS
Power (FPRA)
3G SM (FSME)
2G SM (ESMC)
RM 1900 (FXFA)
FPRA or FPMA
Fiber up to 200m
Fiber up to 10Km
Distributed Solution:
- Local Power Supply
- Singlemode Fiber
Feederless Solution:
- DC power from SM
- 50m, 100m or 200m
fiber
DC Cable
RM 1900 (FXFA)
Shared Antenna:
GSM 2+2+2 TRX @ 10W
WCDMA 1+1+1 @ 40W
RP3
Cable for
SM Sync
License needed for RF Sharing
8 © Nokia Siemens Networks 2011
Flexi Multiradio BTS: 3G + LTE BTS
Power (FPRA)
3G SM (FSME)
LTESM (FSME)
FPRA or FPMA
Fiber up to 200m
Fiber up to 10Km
Distributed Solution:
- Local Power Supply
- Singlemode Fiber
Feederless Solution:
- DC power from SM
-50m, 100m or 200m
fiber
- Multimode Fiber
DC Cable
RM 1900 (FXFA)
Separated Antenna:
LTE 1+0+0 @ 20MHz MIMO
WCDMA 1+1+1 @ 40W
RP3
Cable for
SM Sync
SM FSME Supports up to 3 RM
RM 2600 (FRHA)
RM 1900 (FXFA)
RM 2600 (FRHA)
9 © Nokia Siemens Networks 2011
Flexi Multiradio BTS Remote RF Heads
2012
2013
2010 2011
GSM / WCDMA / LTE:
RRH 2TX/4RX
60W + 60W
850 (FHCD)** 4Q/13 HW
RU50/RL60
1900 (FHFA)** 4Q/13 HW
RU50/RL60
• Actual availability and Sw support depends on market needs and customer orders.
**) Sw release info under study
Planned HW availability
Planned SW release
2600 (FRHB)
3Q/11 (LTE RL30) available
2100 (FRGV)** 3Q/12 HW WCDMA/ LTE:
RRH 2TX/2RX
40W + 40W
10 © Nokia Siemens Networks 2011
Flexi Multiradio BTS: LTE BTS (Remote Radio Head)
Power (FPRA)
LTE SM (FSME)
AC/DC (FFAC)
For direct AC feeding
Fiber up to 200m
Fiber up to 15Km
Distributed Solution:
- Local Power Supply
- Singlemode Fiber
Feederless Solution:
- DC power from SM
- 50m, 100m or 200m
fiber
- Multimode Fiber
DC Cable
LTE 1+0+0 @ 20MHz
11 © Nokia Siemens Networks 2011
RF Chaining
Efficient highway coverage and roof top solution
RFM RFM RFM RFM
SM
RF Chaining support with 3-Sector RF modules or RRHs
• Single and dual-band chaining
• Smooth site extension to dual-band
• e.g. 1900 MHz and 850 MHz
• Supports also MIMO, Dual-Cell HSPA and I-HSPA configurations
• Up to 12 RF modules or RRHs and per BTS
• Up to 12 carriers per BTS
• Up to 2 RF modules or RRHs per one chain
• Up to 6 carriers per chain
• Flexibility for building indoor coverage
850 MHz
1900 MHz
850 MHz
1900 MHz 850 MHz
1900 MHz
System Module
RU30 RG20 or
Max 10km
Max 10km
12 © Nokia Siemens Networks 2011
RF Chaining with RF Sharing GSM-WCDMA
Flexible GSM-WCDMA site building and upgrading
• RF Chaining with RF Sharing support for
3-Sector RF modules or RRHs
• One chain for RF-shared units
• Single-RAT chain can be added to both GSM
or WCDMA system module
• One chain can support up to 6 WCDMA carriers
together with GSM TRX – max 6 WCDMA(2+2+2) carriers +6 GSM carries(2+2+2) or
– max 3 WCDMA(1+1+1) carriers +18 GSM carries(6+6+6)
GSM system
module
900 MHz
GSM/WCDMA
900 MHz
GSM/WCDMA
900 MHz
GSM/WCDMA
WCDMA system
module
RFM RFM RFM
SM
SM
RU50 RG30 and
13 © Nokia Siemens Networks 2011
Power Backup System for Flexi Multiradio BTS
• Power System for Flexi Multiradio BTS
– New model, with a battery box to install battery.
– Up to 3 FRPA rectifier (2kW each).
– 3U Flexi case
685mm
450mm
650mm
14 © Nokia Siemens Networks 2011
Power System for Radio Modules
• Rectifiers power from 230VAC to 48VDC (FPAA)
• Battery Backup Li-Fe (FPBB)
• Usable for GSM/EDGE/LTE/WCDMA base stations
• Needs 3U Flexi Power case (FPMA)
• Compact stand alone 500W AC/DC power supply unit for RRH products
• Can be attached to all NSN 2TX RRHs
• Wide AC input range 90…276VAC with 55VDC output
• IP65
• Ambient temperature range -35…55C with sun load
• to the FPKA pole mounting kit underneath RRH
15 © Nokia Siemens Networks 2011
Flexi Multiradio Power Consumption
Power Consumption examples for various Power levels
Sys Module + Others RF Module 50% load RF Module 100% load
Total PW
consumption 50%
load [W]
Total PW
consumption 100%
load [W]
8W 3G BTS 1900 (FXFA+FSME) 248 344 382 592 630
8W 3G BTS 1900 (FXFA+2xFSME) 468 344 382 812 850
8W - chain 3G BTS 1900 (2xFXFA+FSME) 248 416 440 664 688
8W 3G BTS 1900 (3xFXFA+FSME) 248 622 660 870 908
8W 3G BTS 1900 (3xFXFA+2xFSME) 468 622 660 1090 1128
40W 3G BTS 1900 (3xFXFA+FSME) 248 771 909 1019 1157
40W 3G BTS 1900 (3xFXFA+2xFSME) 468 771 909 1239 1377
8W LTE BTS RRH (3xFRHB+FSME) 263 159 422