Bbu And Rru - Zte ZXSDR R8860E GU858 User Manual

ZXSDR R8860E GU858 User Manual
Figure 1-1 R8860E GU858 POSITION IN GSM/UMTS NETWORK
BTS/Node B, which provides the radio coverage of GSM/UMTS network, performs the
following functions:
l
Realizes MS/UE access and radio link transmission through
l
Connects with BSC/RNC through
measurement information, broadcasts system information provided by BSC/RNC,
executes commands issued by BSC/RNC (such as access control, mobility
management, and radio resource management), and performs
transmission management.
The distributed BTS/Node B system consists of BBU and RRU. R8860E GU858 realizes
the function of RRU, and works with the dual-mode BBU to form the BTS/Node B base
station.

1.2.2 BBU and RRU

Functions
Figure 1-2shows the base station structure which is divided into BBU and RRU. BBU
performs base band processing, transmission, and control, while RRU performs the RF
processing.
Figure 1-2 BASE STATION (BBU AND RRU)
SJ-20101210110401-001|2010-12-06
Abis/Iub interface, reports BTS/Node B
1-2
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Um/Uu interface.
FP processing and