The document describes the Flexi EDGE BTS system from Nokia Siemens Networks. It discusses the modular design and components of the Flexi BTS including sector modules, duplexer modules, TRX modules, and system modules. It also covers installation and configuration options, power consumption innovations that improve efficiency, integration with solar power systems, benefits over traditional BTS, and flexibility for multi-radio installations.

1. 1 © Nokia Siemens Networks Flexi EDGE BTS Status / VeTI/ 10122009
Flexi EDGE BTS

2. 2 © Nokia Siemens Networks Flexi EDGE BTS Status / VeTi / 10122009
GSM System Architecture
Our focus (BSS
system)

3. 3 © Nokia Siemens Networks Flexi EDGE BTS Status / VeTi / 10122009
Pole
installation
Stacked
installation
Flexi BTS installation options
Wall
installation
Nokia, 3rd party
BTS cabinet or
SSS installation
multiradio
unique
BTS
reducing
costs
Urban feederless site application
*BB hopping

4. 4 © Nokia Siemens Networks Flexi EDGE BTS Status / VeTi / 10122009
Sector module (3HU)
• Logical module comprising Dual
TRX and Dual duplexer modules
System Module (3 HU)
• O&M, power distribution, system
bus
Dual duplexer module (optional) (1HU)
• Duplexing & multicoupling, VSWR, Bias-T
• Min 1/ sector; paired with Dual TRX module
Dual TRX module (2HU)
• 2 carrier unit
• Either stand-alone or part of Sector module
Main modules of Flexi EDGE BTS
HU = 44.4 mm
Slot for
0-2 WBC’s
Slot for
TRS interface

5. 5 © Nokia Siemens Networks Flexi EDGE BTS Status / VeTi / 10122009
Main modules of Flexi EDGE BTS
DualTRX needs to be paired either with DDU or RTC
System module
Dual duplexer module and
Wideband combiner
submodule
(optional, for all bands)
Dual TRX module
Remote Tunable Combiner
(optional, only for 900/1800)
+
RTC is low-loss, high
capacity filter combiner
supporting only baseband
hopping
DDU/WBC is a flexible
high capacity combining
method supporting both
wideband and baseband
hopping
choose antenna combining option
System extension
module

6. 6 © Nokia Siemens Networks Flexi EDGE BTS Status / VeTi / 10122009
Flexi EDGE - Cost Optimized Configuration (3+3+3)
TRX for extension
With Cost Optimized
Configuration the amount of Dual
TRX HW is optimized for cost
 3+3+3 -> 4+4+4 upgrade
requires new DTRX and a site visit

7. 7 © Nokia Siemens Networks Flexi EDGE BTS Status / VeTi / 10122009
Flexi EDGE Upgrade Optimized Configuration
3+3+3
With Upgrade Optimized
Configuration the Dual TRXs are not
split between sectors.
3+3+3 -> 4+4+4 upgrade can be
done remotely by SW
This TRX remotely
activated for 4+4+4
This TRX remotely
activated for 4+4+4
This TRX remotely
activated for 4+4+4

8. 8 © Nokia Siemens Networks Flexi EDGE BTS Status / VeTi / 10122009
Base station sites are the main energy consumers
in a mobile network
90%
10%
70%
30%
Site energy consumption
(heating/cooling, etc.)
BTS energy consumption
Other (controllers, core, OSS, etc.)
BTS sites

9. 9 © Nokia Siemens Networks Flexi EDGE BTS Status / VeTi / 10122009
Flexi EDGE Power Consumption Innovations
• Disabling the PA bias when traffic goes
down
– Always enabled, on per timeslot basis
– Decision to switch the bias on/off made
dynamically by the BTS during start of
each timeslot.
BTS power consumption
BTS traffic load
TS0 TS1 TS2 TS3 TS4 TS5 TS6 TS7 TS0 TS1
bias on
bias off
efficiency low
efficiency high
competitor
BTS+
on on off off off off on on
on on
Flexi
Traditional BTS
Copied to UltraSite
TRXs manufactured
Year 2007 onwards

10. 10 © Nokia Siemens Networks Flexi EDGE BTS Status / VeTi / 10122009
NSN
Smart Site
Solution
Example

11. 11 © Nokia Siemens Networks Flexi EDGE BTS Status / VeTi / 10122009
Flexi WCDMA – Feeder less Solution
Flexi WCDMA and Flexi EDGE
Flexi WCDMA - Feeder less Solution.
Flexi WCDMA – System
module mounted on tower
leg
Flexi WCDMA – RF module
mounted on antenna pole

12. 12 © Nokia Siemens Networks Flexi EDGE BTS Status / VeTi / 10122009
Flexi EDGE – Aluminum Feeder
Flexi EDGE – System and RF
Module mounted on tower leg
Aluminum Feeder – from the RF
module to antenna system

13. 13 © Nokia Siemens Networks Flexi EDGE BTS Status / VeTi / 10122009
Tubular Tower with Platform
Platform system for the equipments above the
ground
Platform system for the equipments and antenna
system

14. 14 © Nokia Siemens Networks Flexi EDGE BTS Status / VeTi / 10122009
Solar System
Solar Panels Battery House
BTS power consumption
BTS traffic load
TS0 TS1 TS2 TS3 TS4 TS5 TS6 TS7 TS0 TS1
bias on
bias off
efficiency low
efficiency high
competitor
BTS+
on on off off off off on on
on on
Flexi
Traditional BTS

15. 15 © Nokia Siemens Networks Flexi EDGE BTS Status / VeTi / 10122009
Flexi EDGE BTS vs. Traditional BTS Designs
Flexi offers a wide variety of benefits over traditional BTS designs:
POWER
CONSUMPTION
-30% vs. UltraSite 2006
-15% vs. UltraSite 2007
-Real time PA shot down
-DTRX complete shut down
Performance
-Matching UltraSite RF
-Feederless Site for cost
effective coverage
DIMENSIONS
24TRX in UltraSite 12TRX volume
4+4+4 in height of 86cm and 150kg
PRODUCTIZATION
More value in sw, lisencing for:
MHA support, TRX capacity, DPTRX,
TRS i/f & funct.
TRANSMISSION
ENHANCEMENTS
Flexi optimized for tail and chain sites
FlexiHub adds capacity and new interfaces
FLEXIBILITY IN SITE
SELECTION
Installation in wall, pole, Flexi cabinets,
19” racks, Talk OD
MULTIRADIO SITES
Complements Flexi story
Flexibility for multiradio installations
EASY INSTALLATION
Cabinet not mandatory, no cranes
Modules carried by one man

16. 16 © Nokia Siemens Networks Flexi EDGE BTS Status / VeTI/ 10122009
Thank You!