Zte ZXSDR BS8908 G060, Руководство пользователя

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ZXSDR BS8908 G060 User Manual
Figure 1-1 BS8908 Position in GSM Network
BTS is responsible for providing the wireless coverage for the GSM network. It performs
the following functions:
l
Makes MS access the network and implements the radio link transmission function
through Um interface.
l
Connects BSC through Abis interface, reports BTS measurement information,
broadcasts system information provided by BSC, executes commands issued by BSC
such as access control command, mobility management command, radio resource
management command, and control command, and performs FP processing and
transmission management.
A BTS in the distributed networking consists of BBU and RRU. The following describes
the functions of the two parts.
l BBU performs digital baseband signal processing and control management.
l
RRU implements conversion between baseband signal and analog RF signal, which
are transmitted between BBU and antenna.
l
BBU is connected with RRU through the baseband-RF interface (optical interface),
transmitting I/Q digital baseband signal and OAM signaling data.
l
BBU is connected with BSC through Abis interface.
l
RRU is connected with MS through Um interface.
BS8908 can implement functions of the following equipments:
l
BTS
l
RRU
l
BBU
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SJ-20101104174421-001|20110425(R1.1) ZTE Proprietary and Confidential