Flexi Multiradio BTS Configuration

Flexi Multiradio BTS GSM/EDGE RF configurations •

Configuration rules: – 1 x System Module 1 x BCF – Up to 6 cells (up to 12 cells in MOBSS case) per single – –

BCF Up to 16 carriers (TRXs) per sector Up to 36 carriers (TRXs) (12+12+12) per BTS and single BCF ▪ ESMB: up to 18 carriers (TRXs) capacity ▪ ESMC: up to 36 carriers (TRXs) capacity 3-sectorized BTS site

•

Up to 12+12+12 with single System Module (RFM and Antenna shown for single sector)

With Multi-BCF feature up to 108 TRXs can be configured on 2RX div applied with shared diversity paths between pipes single Base Station site (both pipes tuned to the same sub-band) ▪ Up to 108 TRXs (36+36+36) ▪ More than one Radio Module’s pipe can be used in a cell ▪ Pipes used in the same cell can be from the same or different RF Modules

42 © Nokia Siemens Networks

Flexi Multiradio BTS GSM/EDGE RF configurations •

With Multi-BCF feature up to 108 TRXs can be configured on single Base Station site ▪ ▪

Up to 108 TRXs (36+36+36) Multi BCF/common BCCH feature is mandatory

▪

RF Modules simultaneously connected to the System Module can be of different frequency band, e.g.: • • •

900 MHz 6+6+6 & 1800 MHz 6+6+6 or 900 MHz 12+12+12 1800 MHz 12+12+12

Max configuration (RFM and Antennas shown for single sector): • Up to 36+36+36 • 6 x RFM, 3 x ESMC (FSMG), MultiBCF • 3 x Xpol / sector • 9 x Xpol / site 43 © Nokia Siemens Networks

Flexi Multiradio BTS GSM/EDGE RF configurations •

In case both RFM pipes are tuned in UL to the same frequency sub-band single antenna can be shared between pipes „antenna optimized” configuration ▪ Each pipe transmits via its own physical antenna ▪ RX div is exchanged between pipes through the System Module

Antenna optimized configuration

Antennas

TX/RX

X

ANT6 ANT5 ANT4 ANT3 ANT2 ANT1 3 pipe RF Module

•

Example: – Two RFM pipes per

Sector 1

TX/RX ANT6 ANT5 ANT4 ANT3 ANT2 ANT1

Sector 1

44 © Nokia Siemens Networks

3 pipe RF Module

– –

sector (1 cell shown only) Up to 12+12+12 Due to applied antenna sharing the number of antennas is reduced