Zte ZXG10 OB06, Technical Manual

Page: 77 / 117

Chapter 4 - System Functions
Confidential and Proprietary Information of ZTE CORPORATION 63
Short Message Cell Broadcast
The short message cell broadcast procedure is shown in Figure 52 and
Figure 53.
F
I G U R E
5 2 R
E Q U E S T F O R
S
H O R T
M
E S S A G E
C
E L L
B
R O A D C A S T
MS LAPDm FURRM HPIMan LAPD
BSC OAMM
DL_ DATA _IND ( SM S
BROADCAST REQ )
( SM S
BROAD- CAST
REQ)
CBCH block n
M PH_CBCHM sg
ToCHP
F
I G U R E
5 3 S
H O R T
M
E S S A G E
C
E L L
B
R O A D C A S T
C
O M M A N D
MS LAPDm FURRM
HPIMan
LAPD
BSC OAMM
DL_ DATA _IND ( SM S
BROADCAST CM D)
( SM S B ROAD - CAST
CM D)
M PH_ CBCHM sg
BlkToCHP
CBCH page
The BSC sends the Short Message Service Cell Broadcast messages to the
OB06.
These messages are sent by the BSC to the OB06 with the SMS
BROADCAST REQ or SMS BROADCAST CMD message. In these two
messages, the BSC considers the CBCH capacity and then queues, repeats
and transmits the messages. The BSC also splits the SMS Cell Broadcast
message on the air interface. The difference between the two messages is
that, the SMS BROADCAST CMD message can request broadcasting of a
complete cell broadcast message (sent in every message by pages) and
the OB06 splits it into blocks. For the SMS BROADCAST REQ message, it
has been split by the BSC, 23 bytes per block.
With the SMS BROADCAST CMD message, the BSC can set the OB06
broadcast to the default mode. When there are no other messages to be
broadcast in this mode, the OB06 will send a default message.