User's Manual

Mobile WiMAX RAS SPI-2213 System Description/Ed.02
© SAMSUNG Electronics Co., Ltd. 4-25
4.2 Network Synchronization Message Flow
The SPI-2213 uses GPS for the system synchronization. The UCCM of the MMA-G, which
is the GPS reception module, creates the clock with the clock information received from a
GPS and then distributes the clock to each hardware module in the SPI-2213.
Clock information required by the RRH is sent from the MRA-F through ‘Digital I/Q and
C & M’, and the RRH recovers clock information from the signals to create necessary
clocks.0
Figure 4.16 Network Synchronization Flow of SPI-2213
MMA-G(UCCM)
MBB-F
D
A
CCC
BBB
1Port
M
E
I
-
B
M
M
A
-
G
M
R
A
-
F
#
4
M
R
A
-
F
#
5
R
R
H
(0)
R
R
H
(1)
R
R
H
(2)
A
D
B
C
System Clock (56 MHz)
61.44 MHz
PP2S
40.96 S
80 msec
TDD signal
Digital I/Q and C & M
Analog 10 MHz
M
R
A
-
F
#
2
M
R
A
-
F
#
3
M
R
A
-
F
#
0
M
R
A
-
F
#
1