Zte ZXG10 OB06, Техническое руководство

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Chapter 1 - System Architecture
Confidential and Proprietary Information of ZTE CORPORATION 7
The ZXG10 OB06 hardware consists of a control and maintenance module
(CMM), a transceiver module (TRM), an antenna feeder equipment
module (AEM), a backplane transmission module (BTM), a power module
and a heat exchanger.
The hardware structure of the ZXG10 OB06 is shown in Figure 5.
F
I G U R E
5 H
A R D W A R E
S
T R U C T U R E O F T H E
Z X G 1 0 O B 0 6 ( V 1 . 0 )
CMM
Power module
TRM
TRM
A
E
M
Um
interface
Internal
communication bus
ZXG10 OB06
BSC
Abis
interface
Heat
exchanger
T
ran
sm
issio
n
m
odul
e
MMI
BTM
The main functions of each module are as follows:
1. Controller & Maintenance Module (CMM)
CMM implements Abis interface processing, BTS operation &
maintenance, clock synchronization and generation, internal/external
alarm collection and processing and other functions.
2. Transceiver Module (TRM)
TRM controls and processes the radio channels; transmits and receives
the radio channel data; modulates and demodulates the base-band
signals on the radio carrier; and transmits and receives radio carriers
in the GSM system.
The TRM is divided into three units by function:
i. Transceiver Process Unit (TPU)
The TPU implements all functions of base-band data processing of
all duplex channels on a TDMA frame, and the conversion between
the LapDm protocol and the LapD protocol. In addition, it provides
GPRS data service, and supports CS1, CS2, CS3 and CS4 encoding
modes.
ii. Radio Carrier Unit (RCU)
The RCU modulates baseband signals to carrier signals and up-
converts frequency. At the same time, it down-converts the
frequency of received carrier signals. In addition, it can control the
power statically and dynamically in the downlink direction as
required in GSM specifications.