Zte ZXC10 CBTS O1, Technical Manual

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ZXC10 CBTS (V1.0)Technical Manual
28 Confidential and Proprietary Information of ZTE CORPORATION
With the standard “BDS-RFS interface”, the BDS and RFS can be
installed in the same or different cabinets.
The future-proof design of BTS supports a smooth evolution path to 1X
EV-DO, 1X EV-DV or CDMA2000-3X. Different CHMs (CHM0 and CHM1)
can be used in BDS, therefore the same BTS can support both
CDMA2000-1X and EV-DO services at the same time.
In the case BSC and BTS are installed in the same room, BDS can
provide Ethernet interface so as to avoid complex Abis protocol
processing. This is an economy and also reliability-enhancing approach.
BDS Hardware Configuration
The BDS shelf has 17 slots as shown below. All boards given here are BDS
boards.
F
I G
. 5 B D S C
O N F I G U R A T I O N
17
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
S
A
M
C
H
M
C
H
M
C
H
M
C
C
M
C
C
M
D
S
M
R
I
M
S
N
M
G
C
M
BDS
C
H
M
B
I
M
Note
:
There are two types of CHM boards, CHM0 and CHM1, for 1X and EV-DO services
respectively.
As seen from the board layout, two CCM boards are configured: one active
and the other standby. SNM is an optional board that is necessary only
when there is no available optical transmission on site. For a full
configuration of BDS, there are four CHM slots to deliver pure 1X service
with 24 carrier sectors, or pure EV-DO service with 12 carrier sectors.
Besides, the number of CHM boards can be adjusted to adapt to the
capacity requirement.