Table 3-49
Specifications of the LBBP in LTE TDD scenarios
Board
Number of
Cell
Cell Bandwidth
Antenna Configuration
LBBPc
3
5 MHz, 10 MHz, and 20 MHz 3x20 MHz 1T1R
3x20 MHz 1T2R
3x20 MHz 2T2R
3x10 MHz 4T4R
1x20 MHz 8T8R
LBBPd2
3
5 MHz, 10 MHz, and 20 MHz 3x20 MHz 1T1R
3x20 MHz 1T2R
3x20 MHz 2T2R
3x20 MHz 4T4R
NOTE
l
The "Antenna Configuration" column lists the maximum configurations supported by various types of
LBBP. For example, the LBBPc supports the maximum configuration of 3x10 MHz 4T4R, and
therefore supports any of the following configurations: 3x1.4 MHz 4T4R, 3x3 MHz 4T4R, and 3x5
MHz 4T4R.
l
Boards with the same antenna configuration support combinations of different bandwidth as long as
the total bandwidth does not exceed the maximum bandwidth supported by the board. For example, if
an LBBPc supports the 3x20 MHz 2T2R antenna configuration, the three cells connected to the LBBPc
can use any of the following antenna configurations: 1.4 MHz 2T2R, 3 MHz 2T2R, 5 MHz 2T2R, 10
MHz 2T2R, 15 MHz 2T2R, and 20 MHz 2T2R.
l
The LBBP supports CPRI convergence when the site is configured with any of the following RRUs:
RRU3221, RRU3240, RRU3828, RRU3829, RRU3928, RRU3929, LRFUe, MRFUd, RRU3229,
RRU3841, RRU3942, RRU3642, RRU3832, RRU3838, and RRU3268. The CPRI convergence of the
LBBP must comply with the following principles:
l
In LBBPc+LBBPc CPRI convergence mode, the CPRI convergence is allowed only between two
LBBPc boards, and one LBBPc board must be configured in slot 2 or 3.
l
In LBBPc+LBBPc CPRI convergence mode, the CPRI convergence is allowed only from multiple
LBBPc boards to one LBBPd board, and only the CPRI ports on the LBBPd in slot 2 or 3 can
connect to RF units.
Panel
The LBBP has two types of panels, as shown in
Figure 3-27
LBBPc panel
BTS3900C (Ver.C)
Hardware Description
3 BTS3900C Modules
Issue 03 (2013-05-27)
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