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ZXG10-BTS (V2.9) Technical Manual 
82 
Confidential and Proprietary Information of ZTE CORPORATION  
F
I G U R E  
6 3
 
B
R O A D C A S T  
I
N F O R M A T I O N  
1   C
H A N G E  
P
R O C E D U R E
 
 
MS 
LAPDm 
FURRM 
HPIMan 
LAPD 
BSC 
PAGCH
DL_ DATA_IND (BCCH INFO) 
(BCCH INFO) 
MPH_ 
RRCmdToCHP 
(CHP SET/STOP 
BCCH INFO) 
(CHP SET CCCH 
Para.) 
(SYS INFOTYPE 
1/2/2bis/2ter/3/4/7/8) 
(PAG SET CCCH Para.) 
 
 
The BSC indicates to the BTS that the new system messages (like (RR) 
System Information Type 1/2/2bis/2ter 3/4/7/8) will be broadcast on the 
BCCH. 
When the BTS receives the BCCH INFO message, the FURRM module will 
send the CHP SET BCCH INFORMATION message to the CHP if there is any 
system message. Then, the CHP sends it to the MS. If there is no system 
message, the FURRM module will send the CHP STOP BCCH INFORMATION 
message to the CHP, indicating to stop sending these system messages to 
the MS. 
For easy observation of the system message sending, the TRU panel of the 
BTS has a signal indicator marked as “MOD”. 
System Information Type 1 contains the RACH control parameter and cell 
configurations, and System Information Type 2 contains the RACH control 
parameter and BCCH configurations of adjacent cells. The System 
Information Type 2bis and System Information Type 2ter are optional 
messages, containing the BCCH extended configurations of the adjacent 
cells. System Information Type 3 contains the location area ID, cell ID and 
other cell information, and System Information Type 4 contains the RACH 
control information, location area ID, cell ID and other information. The 
System Information Type 7 and System Information Type 8 contain cell 
reselection parameters. 
The FURRM takes out three parameters (BS_PA_MFRMS, 
BS_AG_BLKS_RES and CCCH_CONF) from the Control Channel Description 
information unit of the System Information Type 3 message, and sends 
them to the CHP and PAGCHM modules. 
Broadcast Information 2 (SACCH FILL) Change 
Procedure  
The broadcast information 2 (SACCH FILL) change procedure is shown in 
Figure 64.