1 © NOKIA Combining_Options/19.12.2002/TKo

Nokia UltraSite

Combining Options

2 © NOKIA Combining_Options/19.12.2002/TKo

Nokia UltraSite GSM Base StationAntenna Combining Options

• Combining By-pass• 2-way Wideband

Combining• 4-way Wideband

Combining• Remote Tune Combining

3 © NOKIA Combining_Options/19.12.2002/TKo

Dual Variable Gain Duplex FilterDVxx

99614746

ANT 1

ANT 2

X 1

TX 2

TX 1

Warning! The weight ofthis unit is over 10k g

RX 2

RX 1

RX 2ext

RX 1ext

R (FLT)Y (ALM)G (OPR)

Front viewIsometric view

4 © NOKIA Combining_Options/19.12.2002/TKo

Receiver Multicoupler2-way M2xA and 6-way M6xA

99586474M2xx M6xx

5 © NOKIA Combining_Options/19.12.2002/TKo

Wideband Combiner WCxx

99614773

6 © NOKIA Combining_Options/19.12.2002/TKo

Remote Tune Combiner RTxx

00217117

7 © NOKIA Combining_Options/19.12.2002/TKo

Dual Duplex UnitDuplexerLNA

TRX's

Antennas

DuplexerLNA

RMC 2-way

splittersplitter

TXRX main

div

TXRX main

div

Combining By-pass

8 © NOKIA Combining_Options/19.12.2002/TKo

COMBINING BY-PASS CONFIGURATION CABLING

9 © NOKIA Combining_Options/19.12.2002/TKo

2-way Wideband Combining

Example:4 TRX/cell

Dual Duplex Unit

Antennas

Duplexer LNA

Duplexer LNA

TXRX main

div

splitter

splitter

WBC

splitter

splitter

WBCTXRX main

div

TXRX main

div

TXRX main

div

2-way RMCs& WBCs

TRXs

10 © NOKIA Combining_Options/19.12.2002/TKo

2-WAY WBC CONFIGURATION CABLING

11 © NOKIA Combining_Options/19.12.2002/TKo

WBC

4-way Wideband Combining

Example:8 TRX/cell

Antennas

WBC

WBC

TXRX main

div

Dual Duplex Unit

LNA

TXRX main

div

WBC

TXRX main

div

TXRX main

div

TXRX main

div

WBC

WBC

TXRX main

div

TXRX main

div

LNA

Duplexer

Duplexer

splittersplitter

splittersplittersplittersplittersplittersplitter

TXRX main

div

12 © NOKIA Combining_Options/19.12.2002/TKo

4-WAY WBC CONFIGURATION CABLING

13 © NOKIA Combining_Options/19.12.2002/TKo

Remote Tune Combining

Duplexer

RTC

LNA's

Cavities

TRX's

Antennas

6

6main

div

6

6-way RMCs

splitter

splitter

TX

RX maindiv

14 © NOKIA Combining_Options/19.12.2002/TKo

Remote Tune Combiner Cabling

15 © NOKIA Combining_Options/19.12.2002/TKo

Combiner by-passWBC 2:1

Output power

44.541.0

12

RF & BBRF & BB

WBC 4:1 37.5 4 RF & BBRTC 41.5 6 BB

dBm W28.212.65.6

14.1

Max no. of TRXs /antenna

Frequencyhopping

NOTE! Output power with GMSK modulation. With 8-PSK modulation can be less.

RF Performance in GSM 900 and GSM 1800

Nominal transmitter output power at antenna connector

Receiver sensitivity (static channel)

Single branch w/o MHA -110.5 dBmGSM 900 GSM 1800

-111.0 dBmSingle branch with MHA -111.0 dBm -112.0 dBm

• 2-way diversity• 4-way diversity (available later)

16 © NOKIA Combining_Options/19.12.2002/TKo

Mixed Configurations• Intelligent Coverage

Enhancement (ICE)• Combines advantages of both coverage and

capacity configurations• TRXs in a sector are divided between

Combining By-pass for coverage and RTC or Wideband Combining configuration for capacity

• Either BCCH in both coverage and capacity parts of sector or a common BCCH in coverage TRX

• Dual Band Configuration• Mixing GSM900 and GSM1800 TRXs and RF Units in the same cabinet.• Diplexer allows two frequency bands to use same antenna• Allows both GSM900 and GSM1800 frequency bands to be used in the same

area.• BSC SW 10.5 release will allow GSM900 and GSM1800 to be combined into one

sector (common BCCH)