Zte ZXG10 OB06, Техническое руководство

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Chapter 5 - Networking Modes and System Configurations
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cables. The cabinet-crossing cables should be as short as possible in
configuration.
Configuration of antenna feeder interface frame is shown in Table 6.
T
A B L E
6 C
O N F I G U R A T I O N O F
A
N T E N N A
F
E E D E R
I
N T E R F A C E
F
R A M E
S.N. Unit Name Configurations Description
1
Combiner
Distribution
Unit (CDU)
2 × Number of sectors Each sector is configured with 2 CDUs
2
Combiner
Extension Unit
(CEU)
2 ×Number of sectors
whose numbers of
carriers is greater than
4
Each sector whose numbers of carriers is
greater than 4 is configured with 4 CDUs
Configuration Principle of AEM
Two types of AEM units are available: CDU and CEU. The ZXG10 OB06
(V1.0) allows configuration of various types of sites by means of different
combinations of Combiner Distribution Units and Combiner Extension Units.
For GSM900 cells, GSM900 units are configured; for GSM1800 cells,
GSM1800 units are configured; and so on and so forth for other GSM
systems.
Each site may be configured as either an omni-directional cell or a multiple
directional cell. Based on different field strength coverage modes, there
are two types of base station antenna: omni-antenna and directional
antenna. An omni-antenna can provide omni-directional coverage, thus
saving site construction costs. However, the omni-antenna has low gain
and poor anti-interference capability. The directional antenna is of
directivity with high gain and strong anti-interference capability. To ensure
the complete coverage of a service area, combination of multiple antennas
is required.
Table 7 shows the number of configured carriers for all 40 W TRXs and the
correspondence between CDUs/C EUs and antennas configured in one cell.
T
A B L E
7 N
U M B E R O F
C
O N F I G U R E D
C
A R R I E R S F O R
A
L L
4 0 W T R X
S A N D T H E
C
O R R E S P O N D E N C E B E T W E E N
C D U
S
/ C E U
S A N D
A
N T E N N A S
C
O N F I G U R E D I N
O
N E
C
E L L
TRX
Quantity Antenna Quantity and
Configuration
CDU Quantity CEU Quantity
1 2, TX/RX, RX 2 -
2 2, TX/RX, TX/RX 2 -
3~4 2, TX/RX, TX/RX 2 0 or 2
5~6 2, TX/RX, TX/RX 2 2