BSS equipment overview

 Motorola Base Station System (BSS)  allows many possible configurationscombination of digital and RF equipment that communicates with the Mobile Switching Centre (MSC), the Operations and Maintenance Centre Radio (OMC-R), and the Mobile Stations (MS).

 

System components

The BSS can be divided into a Base Site Controller (BSC), and one or more Base Transceiver Station (BTS). These can be in-building BTS cabinets or externally located ExCell, TopCell, M-Cell cabinets or M-Cell enclosures.

The Transcoder (XCDR) or Generic Digital Processor (GDP) provides 4:1 multiplexing of the traffic and can be located at the BSC or between the BSC and MSC. When the XCDR/GDP is located at the MSC it reduces the number of communication links to the BSC. When transcoding is not performed at the BSC, the XCDR is referred to as a remote transcoder (RXCDR). The RXCDR is part of the BSS but may serve more than one BSS. 

Radio channel units

 

Radio channel unit	Where used ...
Diversity Radio Channel Unit (DRCU)	BTS4, BTS6, TopCell, ExCell
Slim Channel Unit (SCU)	BTS4, BTS6, TopCell, ExCell
Transceiver Control Unit (TCU)	M-Cell6, M-Cell2, BTS6
Picocell Control Unit (PCU)	M-Cellaccess
Transceiver Control Unit, micro (TCU-m)	M-Cellmicro, M-Cellcity and M-Cellcity+
Dual Transceiver Module (DTRX)	M-Cellarena and M-Cellarenamacro
Compact Transceiver Unit (CTU)	Horizonmacro