ZTE Corporation CBTSI18A Manuale Utente

 
 

Chapter 4 - BTS Networking and Configuration 

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BTS Networking 

BTS is in terms of hardware a set of radio transceiving devices that serve 
a cell, which can be of omni-directional, 2-sector, 3-sector or 6-sector 

structure. It modulates and demodulates signals, but in a more complex 
way than a regular modem.  

BTS bears radio service functions of BSS, including radio transmission with 

the MS (Mobile Station) through IS2000 air interface and control over the 
radio channel. It is connected with BSC through Abis interface and 

controlled by BSC.  

In BTS, BDS and RFS are connected flexibly through a standard interface 

to fill in different networking needs.  

Table 3 lists some commonly used BTS networking modes. 

LS 

Local Single Mode  

Support 4-carrier 3-sector (1X/EV-DO), 
not support RRFS 

RS 

Remote Single Mode 

May work as the RRFS, support 4-carrier 
3-sector (1X/DO) 

LEA 

Local Extend Mode A  

RFS added in combined cabinet to support 
voice service (1X) for configuration of 8-
carrier 3-sector or 4-carrier 6-sector 

LEB 

Local Extend Mode B  

BDS and RFS added in combined cabinet 
to support 1X/EV-DO for configuration of 
8-carrier 3-sector or 4-carrier 6-sector 

RE 

Remote Extend Mode 

Remote CBTS or MBTS-RFS added 
through fiber connection. LRFS+RRFS 
supports 12 carrier sectors for EV-DO or 
nearly 24 carrier sectors for 1X 

ME 

MIX Extend Mode 

BDS and RFS added in combined cabinet, 
with  remote  CBTS  or  MBTS-RFS  added 
through fiber connection, to support 24 
carrier sectors for EV-DO or nearly 48 
carrier sectors for 1X