Chapter 1 - System Architecture
Confidential and Proprietary Information of ZTE CORPORATION
7
The working principle of the system is as follows:
•
Downlink:
i.
The ZXG10-OB06 receives data from BSC, including voice and
signaling data.
ii.
The transmission unit sends signaling data to the operation &
maintenance unit for processing.
iii.
The voice data are then sent to baseband processor for processing
of rate conversion, encryption and interleaving.
iv.
Data are then sent to RF unit for modulation to high-frequency
signals.
v.
Finally, data are then transmitted through the antenna feeder
processor.
•
Uplink:
i.
The antenna feeder processor receives the RF signals from the MS.
It then sends these signals to the RF unit to convert into digital
signals.
ii.
The signals are then transmitted to baseband processor for rate
signals conversion, decryption and de-interleaving.
iii.
After conversion to the code pattern, suitable for long-distance
transmission, the signals are sent to the BSC through the Abis
interface.
Figure 3 demonstrates the working principle of ZXG10-OB06 (V1.0).
F
I G U R E
3
–
W
O R K I N G
P
R I N C I P L E O F
Z X G 1 0 - O B 0 6
( V 1 . 0 )
ZXG10-OB06
O
p
eratio
n
&
m
ai
n
te
na
nc
e uni
t
Ba
se
ba
nd
pr
oc
es
si
ng uni
t
RF uni
t
A
n
te
nna
pr
oc
es
si
ng uni
t
Power unit
Heat exchanger
AC input
Data link
System
clock
RF demodulation
signal
Baseband
modulation signal
System clock
Control signal
RF signal
Um interface
Tr
an
sm
is
si
on uni
t
BSC
Abis
Содержание ZXG10-OB06
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